WO2016049850A1

WO2016049850A1 - Uplink data transmission method and related device

Info

Publication number: WO2016049850A1
Application number: PCT/CN2014/087941
Authority: WO
Inventors: 李秉肇; 苗金华; 权威; 张戬; 杨晓东
Original assignee: 华为技术有限公司
Priority date: 2014-09-30
Filing date: 2014-09-30
Publication date: 2016-04-07
Also published as: CN105659678B; CN105659678A

Abstract

Disclosed are an uplink data transmission method and a related device. The method comprises: a user equipment using an unauthorized frequency band to send uplink data to a radio access network device; the user equipment acquiring backoff information, wherein the backoff information is used for instructing the user equipment to stop sending data on the unauthorized frequency band within a backoff duration; and the user equipment stopping sending the data on the unauthorized frequency band within the backoff duration according to the backoff information. By means of the present invention, an unauthorized frequency band can be effectively used to transmit uplink data.

Description

Method for transmitting uplink data and related equipment

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method for transmitting uplink data and related devices.

Background technique

Unlicensed spectrum includes frequency bands for equipment such as industrial, scientific, and medical (ISM, Industrial, Scientific, and Medical). For example, there are three frequency bands in the United States: 902-928 MHz, 2400-2484.5 MHz, and 5725-5850 MHz, 2.4 GHz for countries. Common ISM band. According to the latest published FCC International Spectrum White Paper, the resources of the unlicensed spectrum are much larger than the resources of the licensed spectrum. However, with the rapid development of wireless functions on packet services and smart terminals, the demand for spectrum for high-speed, large-data services is increasing. The transmission of data only through licensed spectrum resources may limit the transmission of high-speed and large-data services.

Summary of the invention

Embodiments of the present invention provide a method for transmitting uplink data and related devices, which can effectively utilize an unlicensed frequency band for uplink data transmission.

In a first aspect, an embodiment of the present invention provides a method for transmitting uplink data, including:

The user equipment sends the uplink data to the radio access network device by using the unlicensed frequency band;

The user equipment acquires backoff information, where the backoff information is used to indicate that the user equipment stops sending data on the unlicensed frequency band within a backoff duration;

The user equipment stops transmitting data on the unlicensed frequency band within the backoff duration according to the backoff information.

With reference to the first aspect, in a first possible implementation, the acquiring, by the user equipment, the backoff information includes:

The user equipment receives the backoff information sent by the radio access network device, where the backoff information is that the radio access network device detects that the user equipment sends the uplink data by more than Setting a data amount threshold, or detecting that the time length of the user equipment sending the uplink data exceeds a preset time threshold;

The backoff duration is that the radio access network device is notified to the user equipment by using a broadcast message or a unicast message, or is preset by the user equipment.

With reference to the first aspect, in a second possible implementation, the acquiring, by the user equipment, the backoff information includes:

The user equipment determines that the amount of data for sending the uplink data exceeds a data amount threshold, or after detecting that the length of time for sending the uplink data exceeds a time threshold, determining the backoff information;

At least one of the data volume threshold, the time threshold, and the backoff duration is that the radio access network device notifies the user equipment by using a broadcast message or a unicast message, or is the user equipment. predefined configuration.

With reference to the first aspect, or the first possible implementation manner of the first aspect, or the second possible implementation manner of the first aspect, in a third possible implementation manner, the user equipment uses an unlicensed frequency band Before sending the uplink data to the radio access network device, the method further includes:

If the user equipment does not reach the uplink synchronization, the user equipment sends the preamble sequence to the radio access network device by using the unlicensed frequency band.

With reference to the first aspect, or the first possible implementation of the first aspect, or the second possible implementation of the first aspect, or the third possible implementation of the first aspect, in a fourth possible In an implementation manner, before the user equipment sends the uplink data to the radio access network device by using the unlicensed frequency band, the method further includes:

If the user equipment determines that the unlicensed frequency band is in an idle state in the subframe n-1, the user equipment occupies the unlicensed frequency band by sending occupancy information until the end time of the subframe n-1, the occupation The information includes at least a preset occupation symbol.

With the fourth possible implementation of the first aspect, in a fifth possible implementation, the occupant information further includes a data scheduling request, where the method further includes:

Receiving, by the user equipment, the number delivered by the radio access network device according to the data scheduling request According to the scheduling information, the data scheduling information includes any one or more of a modulation and coding mode, a physical resource, and a redundancy version used for data transmission;

The user equipment sends uplink data to the radio access network device by using an unlicensed frequency band, including:

The user equipment sends uplink data to the radio access network device by using an unlicensed frequency band based on the data scheduling information.

With reference to the first aspect, or the first possible implementation of the first aspect, or the second possible implementation of the first aspect, or the third possible implementation of the first aspect, or the first aspect The fourth possible implementation manner, or the fifth possible implementation manner of the first aspect, in the sixth possible implementation manner, the unlicensed frequency band is divided into a preset number of frequency band intervals, and the method further includes :

The user equipment preempts the unlicensed frequency band resource in the target frequency band of the unlicensed frequency band, where the user equipment is a user equipment configured with a preset network identifier, and the network identifier is associated with the target frequency band interval;

The user equipment sends uplink data to the radio access network device by using a target frequency band interval of the unlicensed frequency band.

With reference to the first aspect, or the first possible implementation of the first aspect, or the second possible implementation of the first aspect, or the third possible implementation of the first aspect, or the first aspect The fourth possible implementation manner, or the fifth possible implementation manner of the first aspect, or the sixth possible implementation manner of the first aspect, in the seventh possible implementation manner, After the authorized frequency band sends the uplink data to the radio access network device, the method further includes:

Receiving, by the user equipment, feedback information that is sent by the radio access network device in response to the uplink data, and detecting, according to the feedback information, whether the uplink data needs to be retransmitted, where the feedback information is used to indicate the wireless The access network device receives the acknowledgement feedback information ACK of the uplink data sent by the user equipment or the non-acknowledgment feedback information NACK indicating that the radio access network device does not receive the uplink data.

With reference to the seventh possible implementation manner of the foregoing aspect, in the eighth possible implementation manner, the user equipment that receives the feedback information that is sent by the radio access network device in response to the uplink data includes:

The user equipment detects, in a set time window after transmitting the uplink data, whether feedback information sent by the radio access network device in response to the uplink data is received on an unlicensed frequency band, where the time window is a fixed value that is notified by the radio access network device through a broadcast message or a radio resource control protocol RRC signaling;

If the user equipment does not receive the feedback information on the unlicensed frequency band, the user equipment directly determines the feedback information as an acknowledgement feedback information ACK; or if the user equipment is in the unauthorized The feedback information is not received on the frequency band, and the user equipment receives the feedback information on the licensed frequency band according to the pre-configured feedback position offset.

With reference to the first aspect, or the first possible implementation of the first aspect, or the second possible implementation of the first aspect, or the third possible implementation of the first aspect, or the first aspect The four possible implementations, or the fifth possible implementation of the first aspect, or the sixth possible implementation of the first aspect, or the seventh possible implementation of the first aspect, or the first aspect The eighth possible implementation manner, in the ninth possible implementation manner, before the user equipment sends the uplink data to the radio access network device by using the unlicensed frequency band, the method further includes:

The user equipment configures a sequence number for the uplink data to be sent, so that the radio access network device acquires, according to the sequence number, the sending status information corresponding to the uplink data when receiving the uplink data, The transmission status information includes a transmission time and/or a data size of the uplink data.

In a second aspect, the embodiment of the present invention further provides another method for transmitting uplink data, including:

The radio access network device receives uplink data sent by the user equipment using an unlicensed frequency band;

The radio access network device detects whether the data amount of the uplink data sent by the user equipment exceeds a preset data amount threshold; or whether the radio access network device detects the length of the uplink data sent by the user equipment. Exceeding a preset time threshold;

If the information is exceeded, the radio access network device generates the backoff information, and notifies the user equipment of the backoff time corresponding to the backoff information by using a broadcast message or a unicast message, so that the user equipment is based on the backoff information. Stopping sending data on the unlicensed frequency band within the backoff duration.

With reference to the second aspect, in a first possible implementation manner, before the receiving, by the radio access network device, the uplink data that is sent by the user equipment by using the unlicensed frequency band, the method further includes:

Receiving, by the radio access network device, a preamble sequence transmitted by the user equipment by using an unlicensed frequency band;

The radio access network device calculates a timing advance according to the preamble sequence, and sends the timing advance to the user equipment, so that the user equipment adjusts its transmission time according to the timing advance. Uplink synchronization.

With reference to the second aspect, or the first possible implementation manner of the second aspect, in the second possible implementation manner, before the radio access network device receives the uplink data sent by the user equipment using the unlicensed frequency band, The method also includes:

And receiving, by the user equipment, a data scheduling request, where the radio access network device configures data scheduling information for the user equipment according to the data scheduling request, where the data scheduling information includes a modulation and coding manner used for data transmission. , one or more of physical resources, redundancy versions;

The radio access network device sends the data scheduling information to the user equipment, so that the user equipment sends uplink data to the radio access network device by using an unlicensed frequency band based on the data scheduling information.

With reference to the second aspect, or the first possible implementation manner of the second aspect, or the second possible implementation manner of the second aspect, in a third possible implementation manner, the radio access network device receives Before the user equipment uses the uplink data sent by the unlicensed band, the method further includes:

The radio access network device divides the unlicensed frequency band into a preset number of frequency band intervals, and configures a network identifier for the user equipment, so that the user equipment preempts the unlicensed frequency band resource in the target frequency band of the unlicensed frequency band. The network identifier is associated with the target frequency band interval;

The radio access network device receives uplink data sent by the user equipment by using an unlicensed frequency band, including:

The radio access network device receives the uplink data sent by the user equipment by using a target frequency band section of the unlicensed frequency band.

With reference to the second aspect, or the first possible implementation of the second aspect, or the second possible implementation of the second aspect, or the third possible implementation of the second aspect, in a fourth possible In an implementation manner, after the radio access network device receives the uplink data sent by the user equipment by using the unlicensed frequency band, the method further includes:

The radio access network device decodes the uplink data, and generates feedback information according to the decoding result, where the feedback information includes a confirmation for indicating that the radio access network device receives the uplink data sent by the user equipment. Feedback information ACK or non-acknowledgment feedback information NACK indicating that the radio access network device has not received the uplink data;

The radio access network device sends the feedback information to the user equipment.

With the fourth possible implementation of the second aspect, in a fifth possible implementation, the sending, by the radio access network device, the feedback information to the user equipment includes:

The radio access network device detects whether there is an idle unlicensed frequency band within a preset time window;

If there is an idle unlicensed frequency band, the radio access network device sends the feedback information to the user equipment by using the idle unlicensed frequency band;

If there is no idle unlicensed frequency band, the radio access network device sends the feedback information to the user equipment using the licensed frequency band, or does not send the feedback information to the user equipment.

In a third aspect, the embodiment of the present invention further provides a user equipment, including:

a sending module, configured to send uplink data to the radio access network device by using an unlicensed frequency band;

An acquiring module, configured to acquire backoff information, where the backoff information is used to indicate that the user equipment stops sending data on the unlicensed frequency band within a backoff duration;

a backoff module, configured to stop according to the backoff information acquired by the acquiring module during the backoff duration Transmitting data on the unlicensed band.

With reference to the third aspect, in a first possible implementation manner, the acquiring module is specifically configured to:

Receiving the backoff information sent by the radio access network device, where the backoff information is that the radio access network device detects that the data amount of the uplink data sent by the user equipment exceeds a preset data amount threshold, or detects that And sending, after the user equipment sends the uplink data, the length of time exceeds a preset time threshold;

With reference to the third aspect, in a second possible implementation manner, the acquiring module is specifically configured to:

After detecting that the amount of data for sending the uplink data exceeds a data amount threshold, or detecting that the length of time for sending the uplink data exceeds a time threshold, determining the backoff information;

With reference to the third aspect, or the first possible implementation manner of the third aspect, or the second possible implementation manner of the third aspect, in a third possible implementation manner, the user equipment further includes:

The synchronization module is configured to send the preamble sequence to the radio access network device by using an unlicensed band when the uplink synchronization is not reached.

With reference to the third aspect, or the first possible implementation of the third aspect, or the second possible implementation of the third aspect, or the third possible implementation of the third aspect, in the fourth possible In an implementation manner, the user equipment further includes:

An occupant module, configured to: when the unlicensed frequency band is in an idle state in the subframe n-1, occupy the unlicensed frequency band by sending the occupation information until the end time of the subframe n-1, the occupation information At least the preset occupancy symbol is included.

With the fourth possible implementation of the third aspect, in a fifth possible implementation, the occupant information further includes a data scheduling request, where the user equipment further includes:

a first receiving module, configured to receive data scheduling information that is sent by the radio access network device according to the data scheduling request, where the data scheduling information includes a modulation and coding mode, a physical resource, and a redundancy version used for data transmission. Any one or more of

The sending module is specifically configured to:

And transmitting uplink data to the radio access network device by using an unlicensed frequency band based on the data scheduling information.

With reference to the third aspect, or the first possible implementation manner of the third aspect, or the second possible implementation manner of the third aspect, or the third possible implementation manner of the third aspect, or the third aspect The fourth possible implementation manner, or the fifth possible implementation manner of the third aspect, in the sixth possible implementation manner, the unlicensed frequency band is divided into a preset number of frequency band intervals; include:

The preemption module is configured to preempt the unlicensed frequency band resource in the target frequency band of the unlicensed frequency band, where the user equipment is a user equipment configured with a preset network identifier, and the network identifier is associated with the target frequency band interval;

The sending module is specifically configured to:

And transmitting uplink data to the radio access network device by using a target frequency band interval of the unlicensed frequency band.

With reference to the third aspect, or the first possible implementation manner of the third aspect, or the second possible implementation manner of the third aspect, or the third possible implementation manner of the third aspect, or the third aspect The fourth possible implementation manner, or the fifth possible implementation manner of the third aspect, or the sixth possible implementation manner of the third aspect, in the seventh possible implementation manner, the user equipment further includes:

a second receiving module, configured to receive feedback information that is sent by the radio access network device in response to the uplink data, and detect, according to the feedback information, whether the uplink data needs to be retransmitted, where the feedback information is used to indicate Receiving, by the radio access network device, the acknowledgement feedback information ACK of the uplink data sent by the user equipment or indicating that the radio access network device does not receive the uplink data Confirm the feedback information NACK.

With reference to the seventh possible implementation of the third aspect, in an eighth possible implementation, the second receiving module includes:

a detecting unit, configured to detect, in a set time window after transmitting the uplink data, whether feedback information sent by the radio access network device in response to the uplink data is received on an unlicensed frequency band, the time window Is a fixed value that is notified by the radio access network device through a broadcast message or a radio resource control protocol RRC signaling; or a preset fixed value;

a confirmation unit, configured to directly determine the feedback information as the confirmation feedback information ACK when the feedback information is not received on the unlicensed frequency band; or

The information receiving unit is configured to receive the feedback information on the licensed frequency band according to the pre-configured feedback position offset when the feedback information is not received on the unlicensed frequency band.

With reference to the third aspect, or the first possible implementation manner of the third aspect, or the second possible implementation manner of the third aspect, or the third possible implementation manner of the third aspect, or the third aspect The four possible implementations, or the fifth possible implementation of the third aspect, or the sixth possible implementation of the third aspect, or the seventh possible implementation of the third aspect, or the third aspect The eighth possible implementation manner, in the ninth possible implementation manner, the user equipment further includes:

a configuration module, configured to configure a sequence number for the uplink data to be sent, so that the radio access network device acquires, according to the sequence number, the sending status information corresponding to the uplink data when receiving the uplink data, where The transmission status information includes a transmission time and/or a data size of the uplink data.

In a fourth aspect, the embodiment of the present invention further provides a radio access network device, including:

a data receiving module, configured to receive uplink data sent by the user equipment by using an unlicensed frequency band;

a detecting module, configured to detect whether the data amount of the uplink data sent by the user equipment exceeds a preset data amount threshold, or whether the length of the uplink data sent by the user equipment exceeds a preset time threshold;

a first generation module, configured to generate backoff information when the detection result of the detection module is exceeded, And notifying, by the broadcast message or the unicast message, the backoff duration corresponding to the backoff information to the user equipment, so that the user equipment stops sending on the unlicensed frequency band within the backoff period according to the backoff information. data.

With reference to the fourth aspect, in a first possible implementation manner, the radio access network device further includes:

a sequence receiving module, configured to receive a preamble sequence sent by the user equipment by using an unlicensed band;

a calculation module, configured to calculate a timing advance according to the preamble sequence, and send the timing advance to the user equipment, so that the user equipment adjusts its sending time according to the timing advance to achieve uplink synchronization. .

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, in a second possible implementation manner, the radio access network device further includes:

An information configuration module, configured to configure data scheduling information for the user equipment according to the data scheduling request when receiving a data scheduling request sent by the user equipment, where the data scheduling information includes a modulation and coding manner used for data transmission , one or more of physical resources, redundancy versions;

The first sending module is configured to send the data scheduling information to the user equipment, so that the user equipment sends uplink data to the radio access network device by using an unlicensed frequency band based on the data scheduling information.

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, or the second possible implementation manner of the fourth aspect, in a third possible implementation manner, the radio access network device further includes :

a dividing module, configured to divide the unlicensed frequency band into a preset number of frequency band intervals, and configure a network identifier for the user equipment, so that the user equipment preempts the unlicensed frequency band resources in the target frequency band of the unlicensed frequency band, The network identifier is associated with the target frequency band interval;

The data receiving module is specifically configured to:

And receiving, by using the target frequency band of the unlicensed frequency band, uplink data sent by the user equipment.

In combination with the fourth aspect, or the first possible implementation of the fourth aspect, or the fourth aspect The second possible implementation manner, or the third possible implementation manner of the fourth aspect, in the fourth possible implementation manner, the radio access network device further includes:

a second generating module, configured to decode the uplink data, and generate feedback information according to the decoding result, where the feedback information includes a confirmation for indicating that the radio access network device receives the uplink data sent by the user equipment Feedback information ACK or non-acknowledgment feedback information NACK indicating that the radio access network device has not received the uplink data;

The second sending module is configured to send the feedback information to the user equipment.

In conjunction with the fourth possible implementation of the fourth aspect, in a fifth possible implementation, the second sending module includes:

a frequency band detecting unit, configured to detect whether there is an idle unlicensed frequency band in a preset time window;

a first information sending unit, configured to send the feedback information to the user equipment by using the idle unlicensed frequency band when there is an idle unlicensed frequency band;

And a second information sending unit, configured to send the feedback information to the user equipment, or not to send the feedback information to the user equipment, when there is no idle unlicensed frequency band.

The implementation of the present invention has the following beneficial effects:

In the embodiment of the present invention, the uplink data is sent to the radio access network device by using the unlicensed frequency band, and when the backoff information is obtained, the user equipment stops sending data on the unlicensed frequency band within the backoff duration corresponding to the backoff information, thereby It is effective to use the unlicensed band to transmit uplink data.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic flowchart of a method for transmitting uplink data according to an embodiment of the present invention;

2 is a sequence diagram of a method for transmitting uplink data according to an embodiment of the present invention;

3 is a schematic flowchart of another method for transmitting uplink data according to an embodiment of the present invention;

4 is a schematic diagram of interaction of an uplink data transmission method according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of another user equipment according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a radio access network device according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of another radio access network device according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of still another user equipment according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of still another radio access 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 only 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 terms "component," "module," "system," and the like, as used in this specification, are used to mean a computer-related entity, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and a computing device can be a component. One or more components can reside within a process and/or execution thread, and the components can be located on one computer and/or distributed between two or more computers. Moreover, these components can execute from various computer readable media having various data structures stored thereon. A component may, for example, be based on signals having one or more data packets (eg, data from two components interacting with another component between the local system, the distributed system, and/or the network, such as the Internet interacting with other systems) Communicate through local and/or remote processes.

Furthermore, various aspects or features of the present invention can be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used in this application encompasses any computer readable device A computer program that is accessed by a piece, carrier, or media. For example, the computer readable medium may include, but is not limited to, a magnetic storage device (for example, a hard disk, a floppy disk, or a magnetic tape), and an optical disk (for example, a CD (Compact Disk), a DVD (Digital Versatile Disk). Etc.), smart cards and flash memory devices (eg, EPROM (Erasable Programmable Read-Only Memory), cards, sticks or key drivers, etc.). Additionally, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, a wireless channel and various other mediums capable of storing, containing, and/or carrying instructions and/or data.

FIG. 1 is a schematic flowchart of a method for transmitting uplink data according to an embodiment of the present invention. The method according to the embodiment of the present invention may be applied to a user equipment (User Equipment, UE) such as a mobile phone or a tablet computer. The method of the embodiment of the present invention includes:

S101: The user equipment sends the uplink data to the radio access network device by using an unlicensed frequency band.

It should be noted that the unlicensed frequency band is a frequency band that can be used without the approval of the national or local committee. The equipment using the unlicensed frequency band needs to compete to obtain the right to use the unlicensed frequency band.

In a specific embodiment, when the user equipment, that is, the UE needs to send uplink data, it can detect whether there is an idle unlicensed spectrum channel. Specifically, when the user equipment listens to the channel, it can perform interception according to a preset listening rule. The interception rule may include a listening time, a backoff time, a power threshold or an energy threshold, and the like, and the interception rule may be notified by the radio access network device, such as an evolved base station eNB in the LTE communication system.

Optionally, the user equipment may receive the unlicensed spectrum information sent by the radio access network device through the unlicensed frequency band or the licensed frequency band before being monitored by the unlicensed spectrum resource, and is indicated by the unlicensed spectrum information. Listening for unlicensed bands in the unlicensed band. The unlicensed spectrum information may include information such as a frequency domain width of the unlicensed spectrum resource and a center frequency point. Further, if the user equipment receives the unlicensed spectrum information on the licensed frequency band, the unlicensed spectrum carrier may be activated according to the unlicensed spectrum information.

In a specific embodiment, after the user equipment detects the idle unlicensed frequency band and preempts the unlicensed frequency band, the user equipment may directly send the uplink data carrying the preamble sequence to the radio access network device, so as to facilitate the radio access network. The device distinguishes different users by the preamble sequence.

Further, if the user equipment does not reach the uplink synchronization, the user equipment may send the preamble sequence to the radio access network device, so that the radio access network device controls the user equipment to implement uplink according to the preamble sequence. Synchronize.

Specifically, if the user equipment determines that the unlicensed frequency band is in an idle state in the subframe n-1, in order to align the frames, the user equipment may occupy the unlicensed frequency band by sending occupation information until the subframe n At the end time of the -1, the occupation information includes at least a preset occupation symbol, and the unlicensed frequency band may be occupied by a preset occupation symbol such as padding a padding symbol or a sounding symbol. When detecting the frame alignment, such as the start time of the subframe n, the user equipment may use the unlicensed frequency band to send uplink data to the radio access network device. Where n is an integer and n≥1.

Further, please refer to FIG. 2, which is a timing diagram of a method for transmitting uplink data according to an embodiment of the present invention. As shown in FIG. 2, the user equipment detects that an unlicensed frequency band is idle at a certain time of the subframe 1. And the user equipment does not reach the uplink synchronization. The user equipment may send the preamble sequence to the radio access network device, and the radio access network device sends a Time Advance (TA) to the user equipment according to the preamble sequence, to indicate that the user equipment is The timing advance adjusts the transmission timing of the uplink data to achieve uplink synchronization. When the synchronization is reached, the user equipment may fill the unlicensed frequency band, such as padding or sounding, in the unaligned subframe 1 to occupy the unlicensed frequency band, and prevent other devices from preempting resources; when the subframe is aligned, the subframe 2 is reached. The user equipment can send corresponding uplink data to the radio access network device through the unlicensed frequency band.

Further, the occupant information may further include a data scheduling request, such as a scheduling request (SR), a BSR (buffer status report), or a listening reference signal (souding reference) sent by the user equipment at the radio access network device. The signal, the SRS detection signal, is used to assist the base station to perform MCS, resource allocation, and can be used as the data scheduling request, wherein the SR is used to notify the radio access network device that the user equipment needs to send uplink data to the wireless device. Access network equipment The uplink physical resource is requested; the BSR is used to notify the radio access network device of how much data the user equipment has to send; and the SRS can be used to assist the radio access network device to perform resource allocation. Before the user equipment sends the uplink data to the radio access network device, the user equipment may further receive data scheduling information that is sent by the radio access network device according to the data scheduling request, where the data scheduling information may include data transmission. The configuration parameters such as the modulation and coding mode, the physical resource, and the redundancy version, when the user equipment sends the uplink data to the radio access network device, the data transmission may be performed based on the data scheduling information. Specifically, the data scheduling information may be sent by the radio access network device before the uplink data is sent, that is, the user equipment corresponds to different data scheduling information each time the uplink data is sent, or each time the user equipment sends the uplink data. The fixed data scheduling information is used, for example, when the radio access network device sends the uplink grant UL grant to the user equipment, the user equipment carries the fixed data scheduling information, and the user equipment performs the data scheduling process based on the fixed data scheduling information. All uplink data is sent.

Optionally, a network identifier such as an unlicensed spectrum-Radio Network Temporary Identity (U-RNTI) may be defined. Specifically, the unlicensed frequency band may be divided into a preset number of frequency band intervals, and the user equipment may preempt the unlicensed spectrum resource in the specified frequency band interval, that is, the target frequency band interval, when the user equipment preempts the unlicensed frequency band, the user equipment For a user equipment configured with a preset network identifier, such as a U-RNTI, the U-RNTI is associated with the target frequency band interval. Specifically, the radio access network device can divide the user equipment into different groups by using the U-RNTI of the user equipment, and the user equipments having the same U-RNTI can be divided into the same group. The U-RNTI of the user equipment may be pre-configured by the radio access network device. At the same time, the radio access network device can divide the unlicensed frequency band into different frequency band intervals, so that the user equipments that use the same U-RNTI are separated into user equipments of the same group, and can be in an unlicensed frequency band of a smaller unit. Preempting resources in the target band interval reduces resource waste. Specifically, the user equipment of each group may use the same resource location, modulation and coding mode, etc., so that the user equipment uplinks to access the unlicensed frequency band. The radio access network device may notify the user equipment of the U-RNTI and the target frequency band that needs to be preempted by means of a broadcast, a radio resource control (RRC) signaling, or the like.

S102: The user equipment acquires backoff information, where the backoff information is used to indicate the user equipment. Stop transmitting data on the unlicensed band during the backoff period.

Optionally, the backoff information acquired by the user equipment may be the backoff information sent by the received radio access network device, where the backoff information is that the radio access network device detects that the user equipment sends the backoff information. The data amount of the uplink data exceeds a preset data amount threshold, or is sent after detecting that the user equipment sends the uplink data for a length of time exceeding a preset time threshold.

Specifically, the data volume threshold or the time threshold may be set by the radio access network device based on the load condition. The backoff duration is that the radio access network device is notified to the user equipment by using a broadcast message or a unicast message, or is preset by the user equipment, which is not limited by the embodiment of the present invention.

Optionally, the backoff information obtained by the user equipment may be that after the user equipment detects that the amount of data for sending the uplink data exceeds a data amount threshold, or detects that the length of time for sending the uplink data exceeds a time threshold, Determined backoff information;

Specifically, at least one of the data volume threshold, the time threshold, and the backoff duration is that the radio access network device notifies the user equipment by using a broadcast message or a unicast message, such as by using dedicated signaling, such as RRC. The message, the MAC CE indication, or the physical layer control signaling is notified to the user equipment, or the data volume threshold, the time threshold, and the backoff duration may be preset by the user equipment.

S103: The user equipment stops sending data on the unlicensed frequency band within the backoff duration according to the backoff information.

Further, the user equipment retreats the unlicensed frequency band within the backoff duration, that is, after the data is sent on the unlicensed frequency band within the backoff duration, if the unlicensed frequency band is still available, Transmitting data through the unlicensed frequency band; if the unlicensed frequency band is unavailable, the user equipment can re-listen whether there is an idle unlicensed frequency band, and preempt the unlicensed frequency band when detecting an idle unlicensed frequency band. The user equipment sends data to the radio access network device by using the preempted unlicensed frequency band. Specifically, the sent data includes remaining uplink data and/or other newly added data that needs to be sent.

Further, the user equipment sends the uplink data to the radio access network device through the unlicensed frequency band. The user equipment may further receive feedback information that is sent by the radio access network device in response to the uplink data, and determine, according to the feedback information, whether the uplink data needs to be retransmitted, where the feedback information includes Receiving, by the radio access network device, acknowledgement feedback information (ACK) of the uplink data sent by the user equipment or non-acknowledgment feedback information indicating that the radio access network device does not receive the uplink data (Negative Acknowledgement, NACK) ). Specifically, the user equipment may detect, in a set time window after sending the uplink data, whether feedback information sent by the radio access network device in response to the uplink data is received on an unlicensed frequency band, where the time is The window is notified by the radio access network device by using a broadcast message or a radio resource control protocol RRC signaling or other notification manner. Further, if the user equipment does not receive the feedback information in the unlicensed frequency band, the user equipment may directly determine the feedback information as the acknowledgement feedback information ACK; or the user equipment may be biased according to a pre-configured feedback position. The shifting receives the feedback information on the licensed spectrum channel to prevent the user equipment from colliding with the authorized spectrum channel on the LTE system, that is, the scheduling user equipment.

It should be noted that the unlicensed frequency band that the user equipment sends the uplink data may be the entire frequency band indicated by the unlicensed spectrum information sent by the radio access network device, or part of the frequency band indicated by the unlicensed spectrum information. That is, the user equipment may transmit UL data through the entire frequency band indicated by the unlicensed spectrum information delivered by the radio access network device, or send UL data through some frequency bands in the frequency band indicated by the unlicensed spectrum information. The embodiments of the invention are not limited.

Optionally, if the user equipment sends UL data in a part of the frequency band indicated by the unlicensed spectrum information delivered by the radio access network device, the radio access network device sends the feedback information through the DL feedback channel at the physical layer HARQ. The resource location mapping of the Physical HARQ Indication Channel (PHICH) can be identified by a pair of sequences (ie

),among them,

Is the PHICH group number,

It is the orthogonal sequence code in the group, which can be determined by the following formula:

Wherein, _n-DMRS denotes cyclic DMRS (Demodulation reference signal) shift of the DMRS wireless access network device in advance as a demodulated signal DL for each user equipment configured to enable a user device receiving the feedback information Realize DL demodulation;

Indicates the spreading factor in the physical layer channel, which may be set according to different PHICH formats; I _{PRB_RA} indicates the frequency domain location corresponding to the first time slot of the user equipment in the UL data transmission process;

Indicates the number of groups of the _PHICH ; the I _PHICH is a channel coefficient related to the configuration of the TDD, and is set according to the TDD configuration, and is used to perform UL subframe feedback information when the same DL subframe includes feedback information for multiple UL subframes. The distinction.

Optionally, if the user equipment sends UL data through the entire frequency band indicated by the unlicensed spectrum information delivered by the radio access network device, the radio access network device sends the feedback information through the DL feedback channel, and the radio access network device The PHICH feedback position corresponding to the feedback information sent (

) can be determined by the following formula:

Wherein, the relationship about the UL frequency domain resource location mapping is defaulted when determining the PHICH feedback location.

In a specific embodiment, if the feedback information received by the user equipment is a NACK, it indicates that the user equipment needs to perform data retransmission, and the user equipment may resend the uplink data to the radio access network device by using an unlicensed frequency band. The user equipment may retransmit the uplink data by using the licensed frequency band, which is not limited in the embodiment of the present invention. Specifically, the user equipment may preempt the unlicensed frequency band according to the time window notified by the radio access network device to the user equipment. If the user equipment preempts the unlicensed spectrum resource in the time window, the user equipment may be in the unlicensed spectrum. The uplink data is retransmitted on the corresponding channel of the resource. Further, if the unlicensed spectrum resource is not preempted and the preset maximum number of retransmissions is not reached, the radio access network device sends a NACK message to the user equipment, and the user equipment repeatedly performs the preemption operation; The maximum number of retransmissions, the radio access network device does not perform any operation. For example, the user equipment sends uplink data to the radio access network device in subframe n, and receives feedback information of the radio access network device in response to the uplink data transmission when the subframe n+4, and the feedback information is NACK. , the user equipment can listen to whether the unlicensed band is idle or not in the set time window after the subframe n+4. The unlicensed frequency band is preempted in idle time. If the unlicensed frequency band is preempted, the user equipment may resend the uplink data to the radio access network device within the time window.

Optionally, when performing data transmission, the DL may be transmitted according to a frame structure of LTE, and the UL may be transmitted according to a Wi-Fi frame structure. When the amount of UL data is small, if the UL data is still transmitted according to the full bandwidth, it will cause great waste. Therefore, a data size threshold may also be preset. If the UL data size to be transmitted is smaller than the threshold, the user equipment may control to reduce the transmission time unit of the UL data when transmitting the UL data, for example, using a symbol level or the like. The transmission time unit is shortened to a shorter granularity (eg, 1 ms/subframe is shortened to 1 us/subframe).

However, if the transmission time unit of the UL data is reduced, the time units of the downlink DL and the uplink UL are inconsistent, which may cause timing feedback problems, that is, after the UL transmits multiple data packets, the DL has not reached the feedback time. , resulting in an increase in Round-Trip Time (RTT). In order to solve the above timing feedback problem, any of the following solutions can be used:

1) The radio access network device forms a feedback information group for the feedback information of the UL data of the multiple user equipments, and feeds back to the user equipment. Specifically, the radio access network equipment can pass the MAC layer control unit MAC CE or pass the downlink. The control information (Downlink Control Information, DCI) sends the feedback information group to the user equipment;

2) the user equipment repeatedly sends multiple subframes on the UL resource, and the MAC layer or the physical layer PHY of the radio access network device does not perform feedback;

3) The feedback is performed to the user equipment through the RLC (Radio Link Control) layer without feedback through the MAC layer or the PHY layer of the radio access network device.

Further, before transmitting the uplink data to the radio access network device by using the unlicensed frequency band, the user equipment may further receive an uplink grant UL grant that is sent by the radio access network device and carries a pre-configured serial number, and And associating the sequence number with the uplink data that needs to be sent, so that the radio access network device acquires, according to the sequence number, the sending status information corresponding to the uplink data, when the uplink data is received, the sending status The information includes a transmission time and/or a data size of the uplink data.

The user equipment of the embodiment of the present invention may perform channel sounding based on the unlicensed spectrum resource information sent by the radio access network device, and preempt the unlicensed frequency band when the idle unlicensed frequency band is detected, when the user equipment reaches the uplink synchronization. And transmitting the uplink data to the radio access network device by using the unlicensed frequency band. Further, when acquiring the backoff information, the user equipment may stop sending data on the unlicensed frequency band within the backoff duration corresponding to the backoff information. Thus, it is effective to use the unlicensed band to transmit uplink data.

FIG. 3 is a schematic flowchart of another method for transmitting uplink data according to an embodiment of the present invention. The method according to the embodiment of the present invention may be applied to a radio access network device, such as an evolved base station radio access network device. Specifically, the method of the embodiment of the present invention includes:

S201: The radio access network device receives uplink data sent by the user equipment by using an unlicensed frequency band.

Optionally, before the radio access network device receives the uplink data sent by the user equipment using the unlicensed frequency band, if the radio access network device receives the preamble sequence sent by the user equipment using the unlicensed frequency band, The radio access network device may calculate the timing advance TA according to the preamble sequence, and send the timing advance to the user equipment, so that the user equipment adjusts its sending moment according to the timing advance. And reach the uplink synchronization.

Further, if receiving the data scheduling request sent by the user equipment, the radio access network device may configure data scheduling information for the user equipment according to the data scheduling request, and send the data to the user equipment. Data scheduling information, such that the user equipment sends uplink data to the radio access network device using an unlicensed frequency band based on the data scheduling information. Specifically, when receiving the SR, BSR or SRS signal sent by the user equipment, the signal can be used as a data scheduling request. The data scheduling information may include a modulation and coding manner, a physical resource, a redundancy version, and the like used for data transmission.

Optionally, the radio access network device may further divide the unlicensed frequency band into a preset number of frequency band intervals, and configure a network identifier for the user equipment, so that the user equipment is in a target frequency band of the unlicensed frequency band. Seizing the unlicensed frequency band resource, where the network identifier is associated with the target frequency band interval; when the wireless access network device receives the uplink data sent by the user equipment using the unlicensed frequency band, The uplink data sent by the user equipment may be received by using a target frequency band section of the unlicensed frequency band. Specifically, the radio access network device can configure the U-RNTI for each user equipment, and divide the user equipment into different groups by using the U-RNTI of the user equipment, and the user equipments with the same U-RNTI can be divided into the same group. . Further, the radio access network device may divide the unlicensed frequency band into different frequency band intervals, so that user equipments that use the same U-RNTI are separated into user equipments of the same group, and may be in a smaller unit. The licensed frequency band, that is, the target frequency band, preempts resources, thereby reducing resource waste. The user equipment of each group may use the same resource location, modulation and coding mode, etc., so that the user equipment uplinks to access the unlicensed frequency band. The radio access network device may notify the user equipment of the U-RNTI and the target frequency band that needs to be preempted by means of broadcast, RRC signaling, or the like.

S202: The radio access network device detects whether the data quantity of the uplink data sent by the user equipment exceeds a preset data quantity threshold, or detects whether the time length of the uplink data sent by the user equipment exceeds a preset time threshold. .

S203: If the information is exceeded, the radio access network device generates the backoff information, and notifies the user equipment of the backoff duration corresponding to the backoff information by using a broadcast message or a unicast message.

In a specific embodiment, the radio access network device, such as the radio access network device, can detect whether the data volume of the uplink data sent by the user equipment exceeds a preset data volume threshold in the process of receiving the uplink data sent by the user equipment. Or detecting whether the length of the uplink data sent by the user equipment exceeds a preset time threshold, and sending the backoff information to the user equipment when the detection is exceeded, and notifying the user equipment of the backoff duration corresponding to the backoff information, so that the The user equipment stops transmitting data on the unlicensed frequency band within the backoff duration according to the backoff information.

Further, after receiving the uplink data sent by the user equipment using the unlicensed frequency band, the radio access network device may decode the uplink data, and generate feedback information according to the decoding result, where the feedback information includes Receiving, by the radio access network device, the acknowledgement feedback information ACK of the uplink data sent by the user equipment or the non-acknowledgment feedback information NACK indicating that the radio access network device does not receive the uplink data; the radio access network The device sends the feedback information to the user equipment. Specifically, the wireless access network device sends the feedback information to the user equipment, Specifically, the radio access network device detects whether there is an idle unlicensed frequency band in a preset time window; if there is an idle unlicensed frequency band, the radio access network device uses the idle unlicensed frequency band. Sending the feedback information to the user equipment; if there is no idle unlicensed frequency band, the radio access network device sends the feedback information to the user equipment by using a licensed frequency band, or does not send the information to the user equipment. Feedback information.

The device of the present invention can receive the uplink data sent by the user equipment through the unlicensed frequency band, and detect that the data volume of the uplink data sent by the user equipment exceeds a preset data amount threshold, or detect the user. When the backoff information is generated when the time length of the uplink data sent by the device exceeds the preset time threshold, the user equipment stops transmitting data on the unlicensed frequency band within the backoff time corresponding to the backoff information, thereby effectively implementing the data. Use the unlicensed band to transmit upstream data.

FIG. 4 is a schematic diagram of interaction of a method for transmitting uplink data according to an embodiment of the present invention. In the embodiment of the present invention, the method includes:

S301: The first base station sends data scheduling information to the user equipment.

In a specific embodiment, the scheduling information sent by the first base station to the user equipment UE is used to indicate that the UE performs uplink data transmission, and the scheduling information may include a modulation and coding mode, a physical resource, a redundancy version, and a transmission used to transmit the data. Configuration parameters such as the data block size, the effective transmission time of the data transmission, and the listening rules before the data transmission. The effective transmission time includes the available time of the unlicensed band or the available subframes. The listening rule can be the listening time and the backoff. Time, power threshold or energy threshold, etc. Specifically, the data scheduling information may be sent by the first base station to the UE by using a broadcast message or a dedicated RRC message or a MAC CE message or a PHY control signaling, which is not limited by the embodiment of the present invention.

In a specific embodiment, the scheduling information may be sent by the first base station to the UE by using the licensed spectrum cell. Specifically, the first base station may send the message to the UE or the secondary cell to the UE, where the primary cell or the auxiliary The cell may be configured in advance in the protocol or configured by other messages; or the first base station may also be sent to the UE through the unlicensed spectrum cell.

S301a: The first base station sends at least one of the data scheduling information to a second base station where the unlicensed spectrum cell is located.

In a specific embodiment, if the base station where the unlicensed spectrum cell is located is different from the first base station, the base station where the unlicensed spectrum cell is located is used as the second base station, and the first base station performs at least one of the scheduling information. The item is sent to the second base station where the unlicensed spectrum cell is located.

Specifically, when the first base station sends the at least one of the scheduling information to the second base station where the unlicensed spectrum cell is located, the data scheduling information may be transmitted through an X2 interface or an Xn interface between the base stations, or first. The base station accesses the core network node through the S1 interface message, and the core network node transmits the data scheduling information to the second base station, which is not limited in the embodiment of the present invention.

S302: After receiving the data scheduling information, the user equipment preempts the unlicensed frequency band based on the data scheduling information.

S303: The user equipment sends the uplink data to the second base station by using the unlicensed frequency band based on the scheduling information.

In a specific embodiment, after receiving the data scheduling information, the UE applies the configuration parameters carried in the scheduling information to preempt the unlicensed frequency band, and sends the uplink data to the second base station by using the unlicensed frequency band.

Specifically, the UE may apply the configured interception rule when the unlicensed spectrum resource is preempted, and listen to whether the unlicensed frequency band is idle before sending the uplink data, and send the uplink data when the unlicensed frequency band is idle. Or, when the unlicensed frequency band is detected to be busy, the uplink data is sent after being randomly backed off according to the preset backoff parameter for a period of time. And the UE performs uplink data transmission in the configured effective transmission time period. The interception rule may include a listening time, a backoff time, a power threshold, or an energy threshold.

Further, the UE may listen to whether the entire unlicensed spectrum is idle, or only listen to a part of the frequency band of the entire unlicensed spectrum, for example, the UE may receive the unlicensed spectrum information sent by the eNB, and indicate the unlicensed spectrum information. The unlicensed frequency band is determined as the listening frequency band, which is not limited in the embodiment of the present invention.

Further, after the UE preempts the unlicensed frequency band, if the UE detects that the UL synchronization is not reached, the UE may send the preamble to the second base station, and the second base station according to the preamble information of the UE. The amount of TA is calculated and fed back to the UE to instruct the UE to adjust the transmission timing of the uplink data according to the TA amount to achieve UL synchronization.

Further, if the UE finds that the UL frame alignment is not reached, the occupied symbols, such as padding symbols or sounding symbols, may be filled in the unaligned partial subframes to occupy the unlicensed frequency band, thereby preventing other devices from preempting resources. After the frame alignment is implemented, the UE can send uplink data to the second base station.

Optionally, if the UE receives the data scheduling information on the LTE carrier, that is, the licensed frequency band, the unlicensed spectrum carrier may be activated according to the scheduling information, and after the effective transmission time of the data transmission included in the data scheduling information ends Deactivating the unlicensed spectrum carrier. When performing uplink data transmission, the UE may send uplink data of the configuration size to the second base station based on configuration parameters in the data scheduling information, such as physical resources, modulation and coding modes, redundancy versions, and transmitted data block sizes. .

Further, the UE may further configure a sequence number SN before the uplink data is sent, so that the base station where the UE is located may acquire the sending status information of the uplink data sent by the unlicensed band according to the SN, for example, the sending time of the uplink data. And information such as data size. Specifically, the SN may be set to 0, and the eNB adds one to the uplink grant UL grant each time, and returns to zero when the SN reaches the maximum value. When transmitting the data packet carrying the uplink data, the UE may carry the SN on each data packet header.

S304: The second base station sends feedback information to the user equipment.

Further, after the UE sends the uplink data to the second base station by using the unlicensed frequency band, the second base station may send the feedback information to the corresponding UE for the receiving condition of the uplink data.

In a specific embodiment, before the second base station successfully decodes the uplink data, the second base station cannot determine whether the UE sends the uplink data or the uplink data sent from the time, and assumes that each uplink subframe has uplink data sent by the UE, and the second base station The data may be decoded and fed back for each uplink data. After the second base station successfully solves an uplink data, the time when the UE sends the uplink data may be learned according to the sequence number and the like carried in the data packet carrying the uplink data.

Optionally, the second base station may also decode all received uplink data and then feed back to the UE, where the feedback message carries an ACK or a NACK for decoding the uplink data, where ACK It is indicated that the base station receives the uplink data sent by the UE, and the NACK indicates that the base station does not receive the uplink data, and the UE may determine whether to retransmit the uplink data according to the feedback information returned by the second base station. Specifically, the feedback message may be transmitted through an unlicensed spectrum cell or through an authorized spectrum cell (eg, a primary cell or a secondary cell). The feedback message may be a PHY message, a MAC message, or an RLC message, which is not limited by the embodiment of the present invention.

Optionally, the second base station may further carry the SN corresponding to the uplink data in the feedback message, so that the UE knows which UL data packet the feedback information belongs to.

Further, the UE may perform uplink retransmission according to the feedback message sent by the second base station. Specifically, the UE may receive the downlink data sent by the base station in the effective transmission time indicated by the second base station, and assume that each downlink subframe has the data sent by the second base station, and the UE may perform the decoding according to the downlink data. Feedback. It can be understood that before the UE successfully solves one downlink data, it is impossible to determine whether the base station sends data or when to start transmitting data. Assuming that each downlink subframe has data transmitted by the UE, the UE can decode and feed back for each data. After the UE successfully solves an uplink data, it can learn the time when the UE starts to send data according to the serial number and the like in the uplink data packet. Optionally, the UE may also decode all the received data, and then feed back to the second base station, where the feedback message carries the decoding status of the downlink data.

Specifically, when the UE receives the feedback information sent by the second base station in the effective transmission time corresponding to the unlicensed frequency band, the UE may perform downlink measurement, where the downlink measurement includes measuring CRS (Cell Reference Signal), performing channel estimation, and CSI. (Channel State Information) report or RRM (Radio Resource Management) measurement, etc. In addition, because the second base station flexibly informs the UE of the subframe type, in order to accurately know the location of the downlink subframe, the UE may notify the location of the downlink subframe by using the group scheduling manner, and may also learn the downlink subframe by using the following manner. position:

1) The UE listens to the authorization information of other UEs, and acquires whether other UEs are in downlink subframes.

2) The UE listens to the UL transmission status of other UEs;

3) The UE performs multicast notification through the D2D (device to device) mode.

Further, the second base station may perform downlink retransmission according to the feedback situation of the UE until the preset is reached. The maximum number of retransmissions.

In the embodiment of the present invention, the UE may use the unlicensed frequency band to send uplink data based on the data scheduling information sent by the eNB, and after receiving the uplink data sent by the UE, the eNB may perform feedback according to the decoding situation of the uplink data, so that the UE may The feedback information determines whether uplink retransmission is required, so as to effectively transmit uplink data by using an unlicensed frequency band.

FIG. 5 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. Specifically, the user equipment in the embodiment of the present invention includes: a sending module 11, an obtaining module 12, and a backoff module 13. among them,

The sending module 11 is configured to send uplink data to the radio access network device by using an unlicensed frequency band;

The obtaining module 12 is configured to acquire backoff information, where the backoff information is used to indicate that the user equipment stops sending data on the unlicensed frequency band within a backoff duration.

Optionally, the backoff information obtained by the acquiring module 12 may be the backoff information that is sent by the received radio access network device in real time, or the backoff information that is pre-configured by the user equipment, which is not limited in the embodiment of the present invention.

The backoff module 13 is configured to stop sending data on the unlicensed frequency band within the backoff duration according to the backoff information acquired by the acquiring module 12.

The embodiment of the present invention can send uplink data to the radio access network device through the unlicensed frequency band, and when the backoff information is obtained, the user equipment stops sending data on the unlicensed frequency band within the backoff duration corresponding to the backoff information. Thereby, it is realized to effectively use the unlicensed frequency band to transmit uplink data.

Further, please refer to FIG. 6 , which is a schematic structural diagram of another user equipment according to an embodiment of the present invention. The user equipment in the embodiment of the present invention includes the sending module 11 , the obtaining module 12 , and the backoff module in the user equipment. Optionally, in some embodiments of the present invention, the acquiring module 12 may be specifically configured to:

Receiving the backoff information sent by the radio access network device, where the backoff information is that the radio access network device detects that the data amount of the uplink data sent by the user equipment exceeds a preset data amount threshold, or detects that The length of time that the user equipment sends the uplink data exceeds a preset time threshold. Sent after the value;

Optionally, in some embodiments of the present invention, the obtaining module 12 is further specifically configured to:

Optionally, in some embodiments of the present invention, the user equipment may further include:

The synchronization module 14 is configured to send the preamble sequence to the radio access network device by using an unlicensed band when the uplink synchronization is not reached.

The occupant module 15 is configured to: when the unlicensed frequency band is in an idle state in the subframe n-1, occupy the unlicensed frequency band by sending occupation information until the end time of the subframe n-1, the occupation The information includes at least a preset occupation symbol.

Further, the occupation information further includes a data scheduling request, and the user equipment further includes:

The first receiving module 16 is configured to receive data scheduling information that is sent by the radio access network device according to the data scheduling request, where the data scheduling information includes a modulation and coding mode, a physical resource, and a redundancy version used by the data transmission. Any one or more of them;

The sending module 11 is specifically configured to:

Optionally, in some embodiments of the present invention, the unlicensed frequency band is divided into a preset number of frequency band intervals; the user equipment may further include:

The preemption module 17 is configured to preempt the unlicensed frequency band in the target frequency band of the unlicensed frequency band a user equipment, where the user equipment is a user equipment configured with a preset network identifier, where the network identifier is associated with the target frequency band interval;

The sending module 11 can be specifically configured to:

The second receiving module 18 is configured to receive feedback information that is sent by the radio access network device in response to the uplink data, and detect, according to the feedback information, whether the uplink data needs to be retransmitted, where the feedback information is used to And indicating that the radio access network device receives the acknowledgement feedback information ACK of the uplink data sent by the user equipment or the non-confirmed feedback information NACK indicating that the radio access network device does not receive the uplink data.

Specifically, the second receiving module 18 may further include:

The detecting unit 181 is configured to detect, during a set time window after sending the uplink data, whether feedback information sent by the radio access network device in response to the uplink data is received on an unlicensed frequency band, where the time is The window is notified by the radio access network device through a broadcast message or a radio resource control protocol RRC signaling or is a preset fixed value;

The confirmation unit 182 is configured to directly determine the feedback information as the confirmation feedback information ACK when the feedback information is not received on the unlicensed frequency band; or

The information receiving unit 183 is configured to receive the feedback information on the licensed frequency band according to the pre-configured feedback position offset when the feedback information is not received on the unlicensed frequency band.

Optionally, in some embodiments of the present invention, the user equipment further includes:

The configuration module 19 is configured to configure a sequence number for the uplink data that needs to be sent, so that the radio access network device obtains the sending status information corresponding to the uplink data according to the sequence number when receiving the uplink data, The transmission status information includes a transmission time and/or a data size of the uplink data.

The embodiment of the present invention and the first embodiment of the method belong to the same concept, and the technical effects thereof are also the same. For details, please refer to the description of the method embodiment 1, and details are not described herein again.

The UE may perform channel sounding based on the unlicensed spectrum resource information sent by the eNB, and preempt the unlicensed frequency band when the idle unlicensed frequency band is detected, and pass the unlicensed frequency band after the UE reaches the uplink synchronization. The uplink data is sent to the eNB. Further, when acquiring the backoff information, the UE may stop transmitting data on the unlicensed frequency band within the backoff duration corresponding to the backoff information, thereby effectively transmitting the unlicensed frequency band. Upstream data.

FIG. 7 is a schematic structural diagram of a radio access network device according to an embodiment of the present invention. Specifically, the radio access network device includes: a data receiving module 21, a detecting module 22, and a A generation module 23. among them,

The data receiving module 21 is configured to receive uplink data that is sent by the user equipment by using an unlicensed frequency band;

The detecting module 22 is configured to detect whether the data amount of the uplink data sent by the user equipment exceeds a preset data amount threshold, or whether the length of the uplink data sent by the user equipment exceeds a preset time threshold;

The first generation module 23 is configured to generate backoff information when the detection result of the detection module 22 is exceeded, and notify the user equipment of the backoff duration corresponding to the backoff information by using a broadcast message or a unicast message. So that the user equipment stops transmitting data on the unlicensed frequency band within the backoff duration according to the backoff information.

The device of the present invention can receive the uplink data sent by the user equipment through the unlicensed frequency band, and detect that the data volume of the uplink data sent by the user equipment exceeds a preset data volume threshold, or the uplink data that is sent. When the timeout period exceeds the preset time threshold, the backoff information is generated, and the backoff information is sent to the user equipment, so that the user equipment stops transmitting data on the unlicensed frequency band within a certain backoff period.

Further, please refer to FIG. 8 , which is a schematic structural diagram of another radio access network device according to an embodiment of the present invention. The user equipment in the embodiment of the present invention includes the data receiving module 21 in the radio access network device. The detecting module 22 and the first generating module 23 are optional, in the embodiment of the present invention. The radio access network device may further include:

The sequence receiving module 24 is configured to receive a preamble sequence that is sent by the user equipment by using an unlicensed band;

The calculating module 25 is configured to calculate a timing advance according to the preamble sequence, and send the timing advance to the user equipment, so that the user equipment adjusts its sending time according to the timing advance to reach an uplink. Synchronize.

Optionally, in some embodiments of the present invention, the radio access network device may further include:

The information configuration module 26 is configured to: when receiving the data scheduling request sent by the user equipment, configure data scheduling information for the user equipment according to the data scheduling request, where the data scheduling information includes a modulation code used for data transmission. Any one or more of the modes, physical resources, and redundancy versions;

The first sending module 27 is configured to send the data scheduling information to the user equipment, so that the user equipment sends uplink data to the radio access network device by using an unlicensed frequency band based on the data scheduling information.

Optionally, in some embodiments of the present invention, the radio access network device further includes:

The dividing module 28 is configured to divide the unlicensed frequency band into a preset number of frequency band intervals, and configure a network identifier for the user equipment, so that the user equipment preempts the unlicensed frequency band resources in the target frequency band of the unlicensed frequency band. The network identifier is associated with the target frequency band interval;

The data receiving module 21 can be specifically configured to:

a second generating module 29, configured to decode the uplink data, and generate feedback information according to the decoding result, where the feedback information includes: used to indicate that the radio access network device receives the uplink data sent by the user equipment. Confirming the feedback information ACK or indicating that the radio access network device does not receive the non-confirmed feedback information NACK of the uplink data;

The second sending module 30 is configured to send the feedback information to the user equipment.

Specifically, the second sending module 30 may further include:

The frequency band detecting unit 301 is configured to detect, in a preset time window, whether there is an idle unlicensed frequency band;

The first information sending unit 302 is configured to send the feedback information to the user equipment by using the idle unlicensed frequency band when there is an idle unlicensed frequency band;

The second information sending unit 303 is configured to send the feedback information to the user equipment, or not to send the feedback information to the user equipment, when there is no idle unlicensed frequency band.

The user equipment of the embodiment of the present invention includes: a receiver 300, a transmitter 400, a memory 200, and a processor 100, where The memory 200 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory. A corresponding application or the like is stored in the memory 200 as a computer storage medium. The receiver 300, the transmitter 400, the memory 200, and the processor 100 may be connected to each other through a bus, or may be connected by other means. In the present embodiment, a bus connection will be described. Specifically, the user equipment in the embodiment of the present invention may further refer to the related description of the user equipment in the corresponding embodiment in FIG. 5 to FIG. 6.

The processor 100 performs the following steps:

Sending uplink data to the radio access network device by using the unlicensed frequency band by the receiver 300;

Acquiring the backoff information, the backoff information is used to indicate that the user equipment stops sending data on the unlicensed frequency band within a backoff duration;

And stopping, according to the backoff information, transmitting data on the unlicensed frequency band within the backoff duration.

Optionally, the processor 100 is configured to perform the obtaining backoff information, and specifically perform the following steps:

Optionally, the processor 100 further performs the following steps before performing the sending of the uplink data to the radio access network device by using the unlicensed frequency band:

If the uplink synchronization is not reached, the preamble sequence is sent to the radio access network device using the unlicensed band.

If it is determined that the unlicensed frequency band is in an idle state in the subframe n-1, the unlicensed frequency band is occupied by sending the occupation information until the end time of the subframe n-1, and the occupation information includes at least a preset. Occupy symbol.

Optionally, the occupation information further includes a data scheduling request, and the processor 100 further performs the following steps:

And receiving, by the radio access network device, data scheduling information that is sent according to the data scheduling request, where the data scheduling information includes any one or more of a modulation and coding mode, a physical resource, and a redundancy version used for data transmission. ;

The processor 100 sends uplink data to the radio access network device by using the unlicensed frequency band, and specifically performs the following steps:

Optionally, the unlicensed frequency band is divided into a preset number of frequency band intervals; the processor 100 further performs the following steps:

The user equipment is a user equipment configured with a preset network identifier, and the network identifier is associated with the target frequency band interval, where the unlicensed frequency band resource is preempted in the target frequency band of the unlicensed frequency band;

Optionally, after performing the using the unlicensed frequency band to send uplink data to the radio access network device, the processor 100 further performs the following steps:

Receiving feedback information sent by the radio access network device in response to the uplink data, and detecting, according to the feedback information, whether the uplink data needs to be retransmitted, where the feedback information includes indicating the radio access network device And receiving the acknowledgement feedback information ACK of the uplink data sent by the user equipment or the non-acknowledgment feedback information NACK indicating that the radio access network device does not receive the uplink data.

Optionally, the processor 100 performs the following steps: receiving the feedback information that is sent by the radio access network device in response to the uplink data, and specifically performing the following steps:

Detecting, in a set time window after transmitting the uplink data, whether feedback information sent by the radio access network device in response to the uplink data is received on an unlicensed frequency band, where the time window is determined by the wireless The preset value fixed by the access network device through a broadcast message or a radio resource control protocol RRC signaling;

If the feedback information is not received on the unlicensed frequency band, the feedback information is directly determined The feedback information ACK is determined; or, if the feedback information is not received on the unlicensed frequency band, the feedback information is received on the licensed frequency band according to the pre-configured feedback position offset.

Optionally, the processor 100 further performs the following steps before performing the sending the uplink data to the radio access network device by using the unlicensed frequency band:

Configuring a sequence number for the uplink data to be sent, so that the radio access network device acquires, according to the sequence number, the sending status information corresponding to the uplink data when receiving the uplink data, where the sending status information includes The transmission time and/or data size of the uplink data.

The embodiment of the present invention can send uplink data to the radio access network device through the unlicensed frequency band, and when the backoff information is acquired, stop transmitting data on the unlicensed frequency band within the backoff duration corresponding to the backoff information, thereby realizing Effectively use the unlicensed band to transmit uplink data.

10 is a schematic structural diagram of another radio access network device according to an embodiment of the present invention. The radio access network device includes: a receiver 700, a transmitter 800, a memory 600, and The processor 500 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory. A corresponding application or the like is stored in the memory 600 as a computer storage medium. The receiver 700, the transmitter 800, the memory 600, and the processor 500 may be connected to each other through a bus, or may be connected by other means. In the present embodiment, a bus connection will be described. Specifically, the radio access network device in the embodiment of the present invention may further refer to the related description of the radio access network device in the corresponding embodiment of FIG. 7 to FIG. 8.

The processor 500 performs the following steps:

Receiving, by the receiver 700, uplink data sent by the user equipment by using an unlicensed frequency band;

Detecting whether the data amount of the uplink data sent by the user equipment exceeds a preset data amount threshold; or detecting whether the length of the uplink data sent by the user equipment exceeds a preset time threshold;

Optionally, the processor 500 further performs the following steps before performing the receiving, by the user equipment, uplink data sent by using an unlicensed frequency band:

Receiving, by the receiver 700, a preamble sequence transmitted by the user equipment using an unlicensed frequency band;

Calculating a timing advance according to the preamble sequence, and transmitting, by the transmitter 800, the timing advance to the user equipment, so that the user equipment adjusts its transmission timing according to the timing advance to achieve uplink synchronization.

And if the data scheduling request sent by the user equipment is received, configuring data scheduling information for the user equipment according to the data scheduling request, where the data scheduling information includes a modulation and coding mode, a physical resource, and a redundancy used by the data transmission. Any one or more of the versions;

The data scheduling information is sent by the transmitter 800 to the user equipment, so that the user equipment sends uplink data to the radio access network device by using an unlicensed frequency band based on the data scheduling information.

The unlicensed frequency band is divided into a preset number of frequency band intervals, and the network identifier is configured for the user equipment, so that the user equipment preempts the unlicensed frequency band resources in the target frequency band interval of the unlicensed frequency band, where the network identifier and the network identifier The target frequency band interval is associated;

The processor 500 performs the following steps by performing the receiving uplink data sent by the user equipment by using an unlicensed frequency band, and performing the following steps:

Optionally, after performing the receiving the uplink data sent by the user equipment by using the unlicensed frequency band, the processor 500 further performs the following steps:

Decoding the uplink data, and generating feedback information according to the decoding result, where the feedback information is used to indicate that the radio access network device receives the uplink data sent by the user equipment. The feedback information ACK or the non-confirmed feedback information NACK indicating that the radio access network device does not receive the uplink data;

The feedback information is sent to the user equipment by the transmitter 800.

Optionally, the processor 500 is configured to send the feedback information to the user equipment, and specifically perform the following steps:

Detecting whether there is an idle unlicensed band within a preset time window;

If the idle unlicensed frequency band exists, the idle unlicensed frequency band is used to send the feedback information to the user equipment;

If there is no idle unlicensed frequency band, the feedback frequency information is sent to the user equipment by using the licensed frequency band, or the feedback information is not sent to the user equipment.

The device of the present invention can receive the uplink data sent by the user equipment through the unlicensed frequency band, and detect that the data volume of the uplink data sent by the user equipment exceeds a preset data amount threshold, or detect the user. When the backoff information is generated when the time length of the uplink data sent by the device exceeds the preset time threshold, the user equipment stops transmitting data on the unlicensed frequency band within the backoff time corresponding to the backoff information, thereby effectively implementing the data. Use the unlicensed band to transmit upstream data. A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. When executed, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and thus equivalent changes made in the claims of the present invention are still within the scope of the present invention.

Claims

A method for transmitting uplink data, comprising:

The user equipment sends the uplink data to the radio access network device by using the unlicensed frequency band;

The user equipment acquires backoff information, where the backoff information is used to indicate that the user equipment stops sending data on the unlicensed frequency band within a backoff duration;

The user equipment stops transmitting data on the unlicensed frequency band within the backoff duration according to the backoff information.
The method according to claim 1, wherein the acquiring, by the user equipment, the backoff information comprises:

The user equipment receives the backoff information sent by the radio access network device, where the backoff information is that the radio access network device detects that the data amount of the uplink data sent by the user equipment exceeds a preset data amount threshold. Or sending the user equipment to send the uplink data for a length of time exceeding a preset time threshold;

The backoff duration is that the radio access network device is notified to the user equipment by using a broadcast message or a unicast message, or is preset by the user equipment.
The method according to claim 1, wherein the acquiring, by the user equipment, the backoff information comprises:

The user equipment determines that the amount of data for sending the uplink data exceeds a data amount threshold, or after detecting that the length of time for sending the uplink data exceeds a time threshold, determining the backoff information;

At least one of the data volume threshold, the time threshold, and the backoff duration is that the radio access network device notifies the user equipment by using a broadcast message or a unicast message, or is the user equipment. predefined configuration.
The method according to any one of claims 1 to 3, wherein the method further comprises before the user equipment sends the uplink data to the radio access network device using the unlicensed frequency band. include:

If the user equipment does not reach the uplink synchronization, the user equipment sends the preamble sequence to the radio access network device by using the unlicensed frequency band.
The method according to any one of claims 1 to 4, wherein before the user equipment sends the uplink data to the radio access network device by using the unlicensed frequency band, the method further includes:

If the user equipment determines that the unlicensed frequency band is in an idle state in the subframe n-1, the user equipment occupies the unlicensed frequency band by sending occupancy information until the end time of the subframe n-1, the occupation The information includes at least a preset occupation symbol.
The method of claim 5, wherein the occupancy information further comprises a data scheduling request, the method further comprising:

Receiving, by the user equipment, data scheduling information that is sent by the radio access network device according to the data scheduling request, where the data scheduling information includes any one of a modulation and coding mode, a physical resource, and a redundancy version used for data transmission. Item or items;

The user equipment sends uplink data to the radio access network device by using an unlicensed frequency band, including:

The user equipment sends uplink data to the radio access network device by using an unlicensed frequency band based on the data scheduling information.
The method according to any one of claims 1 to 6, wherein the unlicensed frequency band is divided into a preset number of frequency band intervals; the method further comprises:

The user equipment preempts the unlicensed frequency band resource in the target frequency band of the unlicensed frequency band, where the user equipment is a user equipment configured with a preset network identifier, and the network identifier is associated with the target frequency band interval;

The user equipment sends uplink data to the radio access network device by using an unlicensed frequency band, including:

The user equipment sends uplink data to the radio access network device by using a target frequency band interval of the unlicensed frequency band.
The method according to any one of claims 1 to 7, wherein after the user equipment sends the uplink data to the radio access network device by using the unlicensed frequency band, the method further includes:

Receiving, by the user equipment, feedback information that is sent by the radio access network device in response to the uplink data, and detecting, according to the feedback information, whether the uplink data needs to be retransmitted, where the feedback information is used to indicate the wireless The access network device receives the acknowledgement feedback information ACK of the uplink data sent by the user equipment or the non-acknowledgment feedback information NACK indicating that the radio access network device does not receive the uplink data.
The method according to claim 8, wherein the user equipment receives the feedback information that is sent by the radio access network device in response to the uplink data, and includes:

The user equipment detects, in a set time window after transmitting the uplink data, whether feedback information sent by the radio access network device in response to the uplink data is received on an unlicensed frequency band, where the time window is a fixed value that is notified by the radio access network device through a broadcast message or a radio resource control protocol RRC signaling;

If the user equipment does not receive the feedback information on the unlicensed frequency band, the user equipment directly determines the feedback information as an acknowledgement feedback information ACK; or if the user equipment is in the unauthorized The feedback information is not received on the frequency band, and the user equipment receives the feedback information on the licensed frequency band according to the pre-configured feedback position offset.
The method according to any one of claims 1 to 9, wherein before the user equipment sends the uplink data to the radio access network device by using the unlicensed frequency band, the method further includes:

The user equipment configures a sequence number for the uplink data to be sent, so that the radio access network device acquires, according to the sequence number, the sending status information corresponding to the uplink data when receiving the uplink data, The transmission status information includes a transmission time and/or a data size of the uplink data.
A method for transmitting uplink data, comprising:

The radio access network device receives uplink data sent by the user equipment using an unlicensed frequency band;

The radio access network device detects whether the data amount of the uplink data sent by the user equipment exceeds a preset data amount threshold; or whether the radio access network device detects the length of the uplink data sent by the user equipment. Exceeding a preset time threshold;

If the information is exceeded, the radio access network device generates the backoff information, and notifies the user equipment of the backoff time corresponding to the backoff information by using a broadcast message or a unicast message, so that the user equipment is based on the backoff information. Stopping sending data on the unlicensed frequency band within the backoff duration.
The method according to claim 11, wherein before the receiving, by the radio access network device, the uplink data sent by the user equipment using the unlicensed frequency band, the method further includes:

Receiving, by the radio access network device, a preamble sequence transmitted by the user equipment by using an unlicensed frequency band;

The radio access network device calculates a timing advance according to the preamble sequence, and sends the timing advance to the user equipment, so that the user equipment adjusts its transmission time according to the timing advance. Uplink synchronization.
The method according to claim 11 or 12, wherein before the receiving, by the radio access network device, the uplink data sent by the user equipment using the unlicensed frequency band, the method further includes:

And receiving, by the user equipment, a data scheduling request, where the radio access network device configures data scheduling information for the user equipment according to the data scheduling request, where the data scheduling information includes a modulation and coding manner used for data transmission. , one or more of physical resources, redundancy versions;

The radio access network device sends the data scheduling information to the user equipment, so that the user equipment sends uplink data to the radio access network device by using an unlicensed frequency band based on the data scheduling information.
The method according to any one of claims 11 to 13, wherein before the receiving, by the radio access network device, the uplink data sent by the user equipment using the unlicensed frequency band, the method further includes:

The radio access network device divides the unlicensed frequency band into a preset number of frequency band intervals, and configures a network identifier for the user equipment, so that the user equipment preempts the unlicensed frequency band resource in the target frequency band of the unlicensed frequency band. The network identifier is associated with the target frequency band interval;

The radio access network device receives uplink data sent by the user equipment by using an unlicensed frequency band, including:

The radio access network device receives the uplink data sent by the user equipment by using a target frequency band section of the unlicensed frequency band.
The method according to any one of claims 11 to 14, wherein after the radio access network device receives the uplink data sent by the user equipment using the unlicensed frequency band, the method further includes:

The radio access network device decodes the uplink data, and generates feedback information according to the decoding result, where the feedback information includes a confirmation for indicating that the radio access network device receives the uplink data sent by the user equipment. Feedback information ACK or non-acknowledgment feedback information NACK indicating that the radio access network device has not received the uplink data;

The radio access network device sends the feedback information to the user equipment.
The method according to claim 15, wherein the sending, by the radio access network device, the feedback information to the user equipment comprises:

The radio access network device detects whether there is an idle unlicensed frequency band within a preset time window;

If there is an idle unlicensed frequency band, the radio access network device sends the feedback information to the user equipment by using the idle unlicensed frequency band;

If there is no idle unlicensed frequency band, the radio access network device sends the feedback information to the user equipment using the licensed frequency band, or does not send the feedback information to the user equipment.
A user equipment, comprising:

a sending module, configured to send uplink data to the radio access network device by using an unlicensed frequency band;

An acquiring module, configured to acquire backoff information, where the backoff information is used to indicate that the user equipment stops sending data on the unlicensed frequency band within a backoff duration;

The backoff module is configured to stop sending data on the unlicensed frequency band within the backoff duration according to the backoff information acquired by the acquiring module.
The device according to claim 17, wherein the obtaining module is specifically configured to:

Receiving the backoff information sent by the radio access network device, where the backoff information is that the radio access network device detects that the data amount of the uplink data sent by the user equipment exceeds a preset data amount threshold, or detects that And sending, after the user equipment sends the uplink data, the length of time exceeds a preset time threshold;

The backoff duration is that the radio access network device is notified to the user equipment by using a broadcast message or a unicast message, or is preset by the user equipment.
The device according to claim 17, wherein the obtaining module is specifically configured to:

After detecting that the amount of data for sending the uplink data exceeds a data amount threshold, or detecting that the length of time for sending the uplink data exceeds a time threshold, determining the backoff information;

At least one of the data volume threshold, the time threshold, and the backoff duration is that the radio access network device notifies the user equipment by using a broadcast message or a unicast message, or is the user equipment. predefined configuration.
The device according to any one of claims 17 to 19, wherein the user equipment further comprises:

The synchronization module is configured to send the preamble sequence to the radio access network device by using an unlicensed band when the uplink synchronization is not reached.
The device according to any one of claims 17 to 20, wherein the user equipment further comprises:

An occupant module, configured to: when the unlicensed frequency band is in an idle state in the subframe n-1, occupy the unlicensed frequency band by sending the occupation information until the end time of the subframe n-1, the occupation information At least the preset occupancy symbol is included.
The device according to claim 21, wherein the occupancy information further comprises a data scheduling request, and the user equipment further comprises:

a first receiving module, configured to receive, by the radio access network device, a delivery according to the data scheduling request Data scheduling information, where the data scheduling information includes any one or more of a modulation and coding mode, a physical resource, and a redundancy version used for data transmission;

The sending module is specifically configured to:

And transmitting uplink data to the radio access network device by using an unlicensed frequency band based on the data scheduling information.
The device according to any one of claims 17 to 22, wherein the unlicensed frequency band is divided into a preset number of frequency band intervals; the user equipment further includes:

The preemption module is configured to preempt the unlicensed frequency band resource in the target frequency band of the unlicensed frequency band, where the user equipment is a user equipment configured with a preset network identifier, and the network identifier is associated with the target frequency band interval;

The sending module is specifically configured to:

And transmitting uplink data to the radio access network device by using a target frequency band interval of the unlicensed frequency band.
The device according to any one of claims 17 to 23, wherein the user equipment further comprises:

a second receiving module, configured to receive feedback information that is sent by the radio access network device in response to the uplink data, and detect, according to the feedback information, whether the uplink data needs to be retransmitted, where the feedback information is used to indicate The radio access network device receives the acknowledgement feedback information ACK of the uplink data sent by the user equipment or the non-confirmed feedback information NACK indicating that the radio access network device does not receive the uplink data.
The device according to claim 24, wherein the second receiving module comprises:

a detecting unit, configured to detect, in a set time window after transmitting the uplink data, whether feedback information sent by the radio access network device in response to the uplink data is received on an unlicensed frequency band, the time window Is a fixed value that is notified by the radio access network device through a broadcast message or a radio resource control protocol RRC signaling; or a preset fixed value;

a confirming unit, configured to directly report the feedback information when the feedback information is not received on the unlicensed frequency band The feedback information is determined as the confirmation feedback information ACK; or,

The information receiving unit is configured to receive the feedback information on the licensed frequency band according to the pre-configured feedback position offset when the feedback information is not received on the unlicensed frequency band.
The device according to any one of claims 17 to 25, wherein the user equipment further comprises:

a configuration module, configured to configure a sequence number for the uplink data to be sent, so that the radio access network device acquires, according to the sequence number, the sending status information corresponding to the uplink data when receiving the uplink data, where The transmission status information includes a transmission time and/or a data size of the uplink data.
A radio access network device, comprising:

a data receiving module, configured to receive uplink data sent by the user equipment by using an unlicensed frequency band;

a detecting module, configured to detect whether the data amount of the uplink data sent by the user equipment exceeds a preset data amount threshold, or whether the length of the uplink data sent by the user equipment exceeds a preset time threshold;

a first generation module, configured to generate backoff information when the detection result of the detection module is exceeded, and notify the user equipment of the backoff duration corresponding to the backoff information by using a broadcast message or a unicast message, so that The user equipment stops transmitting data on the unlicensed frequency band within the backoff duration according to the backoff information.
The device according to claim 27, wherein the radio access network device further comprises:

a sequence receiving module, configured to receive a preamble sequence sent by the user equipment by using an unlicensed band;

a calculation module, configured to calculate a timing advance according to the preamble sequence, and send the timing advance to the user equipment, so that the user equipment adjusts its sending time according to the timing advance to achieve uplink synchronization. .
The device according to claim 27 or 28, wherein the radio access network device further comprises:

An information configuration module, configured to configure data scheduling information for the user equipment according to the data scheduling request when receiving a data scheduling request sent by the user equipment, where the data scheduling information includes a modulation and coding manner used for data transmission , one or more of physical resources, redundancy versions;

The first sending module is configured to send the data scheduling information to the user equipment, so that the user equipment sends uplink data to the radio access network device by using an unlicensed frequency band based on the data scheduling information.
The device according to any one of claims 27 to 29, wherein the radio access network device further comprises:

a dividing module, configured to divide the unlicensed frequency band into a preset number of frequency band intervals, and configure a network identifier for the user equipment, so that the user equipment preempts the unlicensed frequency band resources in the target frequency band of the unlicensed frequency band, The network identifier is associated with the target frequency band interval;

The data receiving module is specifically configured to:

And receiving, by using the target frequency band of the unlicensed frequency band, uplink data sent by the user equipment.
The device according to any one of claims 27 to 30, wherein the radio access network device further comprises:

a second generating module, configured to decode the uplink data, and generate feedback information according to the decoding result, where the feedback information includes a confirmation for indicating that the radio access network device receives the uplink data sent by the user equipment Feedback information ACK or non-acknowledgment feedback information NACK indicating that the radio access network device has not received the uplink data;

The second sending module is configured to send the feedback information to the user equipment.
The device according to claim 31, wherein the second sending module comprises:

a frequency band detecting unit, configured to detect whether there is an idle unlicensed frequency band in a preset time window;

a first information sending unit, configured to send the feedback information to the user equipment by using the idle unlicensed frequency band when there is an idle unlicensed frequency band;

And a second information sending unit, configured to send the feedback information to the user equipment, or not to send the feedback information to the user equipment, when there is no idle unlicensed frequency band.