CN105264942B

CN105264942B - Data transmission transmitting terminal equipment, receiving terminal equipment and method

Info

Publication number: CN105264942B
Application number: CN201480000765.3A
Authority: CN
Inventors: 权威; 张戬; 杨晓东; 胡振兴; 李秉肇
Original assignee: Zhenjiang Qiyue Information Technology Co Ltd
Current assignee: Jiangsu Huifeng Information Technology Co ltd
Priority date: 2014-04-28
Filing date: 2014-04-28
Publication date: 2020-09-04
Anticipated expiration: 2034-04-28
Also published as: CN105264942A; WO2015165011A1

Abstract

The embodiment of the invention provides data transmission transmitting terminal equipment, receiving terminal equipment and a method, relates to the technical field of communication, and provides a data transmission mode based on an unauthorized frequency spectrum to reduce or eliminate the problem of low data transmission performance caused by competition and conflict on the unauthorized frequency spectrum. The method comprises the following steps: the method comprises the steps that a transmitting terminal device obtains configuration information, monitors a preset frequency band indicated on a preset unauthorized frequency spectrum cell according to a monitoring rule in the configuration information, and transmits data after judging that the preset frequency band is idle; and the receiving end acquires the same configuration information and receives the data sent by the sending end after monitoring in a preset frequency band indicated by the configuration information. The embodiment of the invention is used for realizing data transmission and feedback on the unlicensed spectrum.

Description

Data transmission transmitting terminal equipment, receiving terminal equipment and method

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a data transmission transmitting end device, a receiving end device, and a method.

Background

Frequency spectrum is the basis for wireless communications. According to the latest released international white spectrum cover by the Federal Communications Commission (FCC), Unlicensed (Unlicensed) spectrum resources are larger than licensed spectrum resources. Currently, the main technology used in the unlicensed spectrum is Wireless Fidelity (WiFi), but WiFi has defects in mobility, security, Quality of Service (QoS), and handling multi-user scheduling at the same time, so that Long-term Evolution (LTE) devices are applied to the unlicensed spectrum, which not only can effectively utilize unlicensed spectrum resources, but also can provide more effective Wireless access and meet the increasing demand for mobile broadband services.

At present, the LTE base station device mainly configures the unlicensed spectrum to the UE as a Secondary Cell (Scell) of the LTE User Equipment (UE), so that the LTE base station can perform data communication with the UE by using the unlicensed spectrum.

However, since the LTE base station device and the WiFi device may exist on the unlicensed spectrum at the same time, contention and conflict may exist in the utilization of the unlicensed spectrum resource, which results in data loss during transmission, low data transmission performance, and reduced user experience.

Disclosure of Invention

The embodiment of the invention provides data transmission transmitting terminal equipment, receiving terminal equipment and a method, which are based on the data transmission of an unlicensed spectrum cell LTE, reduce or eliminate the problem of data loss in the transmission process due to competition and conflict on the unlicensed spectrum by monitoring the unlicensed spectrum cell before transmitting the data and transmitting the data when frequency band resources are idle, and improve the data transmission performance based on the unlicensed spectrum cell.

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

in a first aspect, a sending end device is provided, where the sending end device includes:

a first obtaining unit, configured to obtain configuration information, where the configuration information includes: monitoring rules and frequency band indication information;

a monitoring unit, configured to monitor a preset frequency band of a preset unlicensed spectrum cell indicated by the frequency band indication information according to the monitoring rule in the configuration information;

and the data sending unit is used for sending data to receiving end equipment through the preset frequency band of the preset unauthorized spectrum cell when the monitoring unit determines that the preset frequency band is idle.

With reference to the first aspect, in a first possible implementation manner, the listening rule includes: monitoring time and back-off time;

the monitoring unit is specifically configured to: if monitoring determines that the preset frequency band of the preset unauthorized spectrum cell is in an idle state within the monitoring time, transmitting data to receiving end equipment through the preset frequency band; or the like, or, alternatively,

and if the preset frequency band is determined to be in a non-idle state, monitoring and judging the preset frequency band again after the backoff time is separated according to the backoff time.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner, the monitoring rule further includes a power threshold;

the listening unit is further configured to: if the power of each signal monitored and detected in the preset frequency band is smaller than the power threshold, determining that the preset frequency band is in an idle state; or the like, or, alternatively,

and if the power of any signal is monitored and detected to be not less than the power threshold in the preset frequency band, determining that the preset frequency band is in a non-idle state.

With reference to the first aspect, in a third possible implementation manner, the data includes a preset identifier corresponding to the data.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner, the data sending unit is further specifically configured to:

receiving a feedback message sent by the receiving end equipment; the feedback message is used for indicating a preset identifier corresponding to the data received by the receiving end equipment;

and determining the data which is not received by the receiving terminal equipment according to the feedback message, and retransmitting the data which is not received.

With reference to the first aspect, in a fifth possible implementation manner, when the sending end device is a base station and the receiving end device is a user equipment, the sending end device further includes:

a first sending unit, configured to send the configuration information to the receiving end device after the first obtaining unit obtains the configuration information, so that the receiving end device receives and receives data in a preset frequency band of the indicated preset unlicensed spectrum cell according to the frequency band indication information in the configuration information.

With reference to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner, the first sending unit is specifically configured to:

transmitting the configuration information to the receiving end equipment through an authorized spectrum cell; or, the configuration information is sent to the receiving end device through an unlicensed spectrum cell which has established communication connection with the receiving end device.

With reference to the first aspect, in a seventh possible implementation manner, when the sending end device is a user equipment and the receiving end device is a base station, the first obtaining unit is specifically configured to obtain the configuration information from the receiving end device.

With reference to the seventh possible implementation manner of the first aspect, in an eighth possible implementation manner, the configuration information further includes valid time, and the sending end device further includes:

and the activation unit is used for activating the preset unauthorized spectrum cell after the first acquisition unit acquires the configuration information, and deactivating the preset unauthorized spectrum cell after the effective time interval, so that the data transmission unit transmits data to the receiving terminal equipment within the effective time.

In a second aspect, a receiving end device is provided, where the receiving end device includes:

a second obtaining unit, configured to obtain configuration information, where the configuration information includes frequency band indication information;

and the data receiving unit is used for receiving the data sent by the sending end equipment in the preset frequency band of the preset unlicensed spectrum cell indicated by the frequency band indication information in the configuration information.

With reference to the second aspect, in a first possible implementation manner, the receiving end device further includes:

the feedback unit is used for decoding the data received by the data receiving unit, acquiring a preset identifier corresponding to the received data, generating a feedback message and sending the feedback message to the sending terminal equipment so that the sending terminal equipment can retransmit the data according to the feedback message; the feedback message is used for indicating a preset identifier corresponding to the received data.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner, the feedback unit is further configured to:

sending one of the feedback messages each time one of the data is received; or the like, or, alternatively,

and after receiving one or more data in preset feedback time, sending one feedback message.

With reference to the second aspect, in a third possible implementation manner, when the receiving end device is a base station and the sending end device is a user device, the configuration information further includes a monitoring rule, and the receiving end device further includes:

and a second sending unit, configured to send the configuration information to the sending end device after the second obtaining unit obtains the configuration information, so that the sending end device receives and monitors according to the monitoring rule in the configuration information, and sends data in a preset frequency band indicated by the frequency band indication information.

With reference to the third possible implementation manner of the second aspect, in a fourth possible implementation manner, the second sending unit is specifically configured to:

transmitting the configuration information to the transmitting terminal equipment through an authorized spectrum cell; or, the configuration information is sent to the sending end device through an unlicensed spectrum cell which has established communication connection with the sending end device.

With reference to the second aspect, in a fifth possible implementation manner, when the receiving end device is a user equipment and the sending end device is a base station, the second obtaining unit is specifically configured to obtain the configuration information from the sending end device.

With reference to the fifth possible implementation manner of the second aspect, in a sixth possible implementation manner, the configuration information further includes valid time, and the receiving end device further includes:

and the activation unit is used for activating the preset unauthorized spectrum cell after the second acquisition unit acquires the configuration information, and deactivating the preset unauthorized spectrum cell after the effective time interval, so that the data receiving unit receives data from the sending terminal device within the effective time.

In a third aspect, a data transmission method is provided, where the method includes:

the sending end equipment acquires configuration information, wherein the configuration information comprises: monitoring rules and frequency band indication information;

the sending end equipment monitors the preset frequency band of the preset unauthorized spectrum cell indicated by the frequency band indication information according to the monitoring rule in the configuration information;

and when the preset frequency band is determined to be idle, the sending terminal equipment sends data to receiving terminal equipment through the preset frequency band of the preset unauthorized spectrum cell.

With reference to the third aspect, in a first possible implementation manner, the method is characterized in that,

the monitoring rule comprises the following steps: monitoring time and back-off time; the sending end device monitors the preset frequency band of the preset unauthorized spectrum cell indicated by the frequency band indication information according to the monitoring rule in the configuration information, and the monitoring comprises the following steps:

if the sending end equipment monitors and determines that the preset frequency band of the preset unauthorized spectrum cell is in an idle state within the monitoring time, sending data to receiving end equipment through the preset frequency band; or the like, or, alternatively,

With reference to the first possible implementation manner of the third aspect, in a second possible implementation manner, the monitoring rule further includes a power threshold, and the method further includes:

if the power of each signal monitored and detected in the preset frequency band is smaller than the power threshold, determining that the preset frequency band is in an idle state; or the like, or, alternatively,

With reference to the third aspect, in a third possible implementation manner, the data includes a preset identifier corresponding to the data.

With reference to the third possible implementation manner of the third aspect, in a fourth possible implementation manner, the method further includes:

the sending end equipment receives a feedback message sent by the receiving end equipment; the feedback message is used for indicating a preset identifier corresponding to the data received by the receiving end equipment;

and the sending end equipment determines the data which is not received by the receiving end equipment according to the feedback message and retransmits the data which is not received.

With reference to the third aspect, in a fifth possible implementation manner, when the sending end device is a base station and the receiving end device is a user equipment, after the sending end device obtains configuration information, the method further includes:

and the sending end equipment sends the configuration information to the receiving end equipment so that the receiving end equipment receives and receives data in the indicated preset frequency band of the preset unlicensed frequency spectrum cell according to the frequency band indication information in the configuration information.

With reference to the fifth possible implementation manner of the third aspect, in a sixth possible implementation manner, the sending, by the sending end device, the configuration information to the receiving end device includes:

the sending end equipment sends the configuration information to the receiving end equipment through an authorized spectrum cell; or, the configuration information is sent to the receiving end device through an unlicensed spectrum cell which has established communication connection with the receiving end device.

With reference to the third aspect, in a seventh possible implementation manner, when the sending end device is a user equipment and the receiving end device is a base station, the obtaining, by the sending end device, configuration information includes:

the sending end device obtains the configuration information from the receiving end device.

With reference to the seventh possible implementation manner of the third aspect, in an eighth possible implementation manner, the configuration information further includes an effective time, and the method further includes:

and after the sending end equipment acquires the configuration information, activating the preset unauthorized spectrum cell, and deactivating the preset unauthorized spectrum cell after the effective time interval so as to send data to the receiving end equipment within the effective time.

In a fourth aspect, a data transmission method is provided, the method comprising:

the method comprises the steps that a receiving end device obtains configuration information, wherein the configuration information comprises frequency band indication information;

and the receiving end equipment receives the data sent by the sending end equipment in the preset frequency band of the preset unauthorized frequency spectrum cell indicated by the frequency band indication information in the configuration information.

With reference to the fourth aspect, in a first possible implementation manner, after the receiving and sending end device listens and sends the data according to the listening rule, the method further includes:

the receiving end equipment decodes the received data, acquires a preset identifier corresponding to the received data, generates a feedback message and sends the feedback message to the sending end equipment, so that the sending end equipment can retransmit the data according to the feedback message; the feedback message is used for indicating a preset identifier corresponding to the received data.

With reference to the first possible implementation manner of the fourth aspect, in a second possible implementation manner, the generating a feedback message and sending the feedback message to the sending end device includes:

the receiving end equipment sends one feedback message when receiving one data; or the like, or, alternatively,

and the receiving end equipment sends the feedback message after receiving one or more data in preset feedback time.

With reference to the fourth aspect, in a third possible implementation manner, when the receiving end device is a base station and the sending end device is a user device, the configuration information further includes a monitoring rule, and after the receiving end device obtains the configuration information, the method further includes:

and the receiving end equipment sends the configuration information to the sending end equipment so that the sending end equipment receives and monitors according to the monitoring rule in the configuration information, and sends data in a preset frequency band indicated by the frequency band indication information.

With reference to the third possible implementation manner of the fourth aspect, in a fourth possible implementation manner, the sending, by the receiving end device, the configuration information to the sending end device includes:

the receiving end equipment sends the configuration information to the sending end equipment through an authorized spectrum cell; or, the configuration information is sent to the sending end device through an unlicensed spectrum cell which has established communication connection with the sending end device.

With reference to the fourth aspect, in a fifth possible implementation manner, when the receiving end device is a user equipment and the sending end device is a base station, the obtaining, by the receiving end device, configuration information includes:

and the receiving end equipment acquires the configuration information from the sending end equipment.

With reference to the fifth possible implementation manner of the fourth aspect, in a sixth possible implementation manner, the configuration information further includes an effective time, and the method further includes:

and after the receiving end equipment acquires the configuration information, activating the preset unauthorized spectrum cell, and deactivating the preset unauthorized spectrum cell after the effective time interval so as to receive data from the sending end equipment within the effective time.

In a fifth aspect, a sending end device is provided, where the sending end device includes: a bus, and a processor, memory, and interface connected to the bus; the memory is to store instructions; the processor executing the instructions to:

acquiring configuration information, wherein the configuration information comprises: monitoring rules and frequency band indication information;

monitoring a preset frequency band of a preset unauthorized frequency spectrum cell indicated by the frequency band indication information according to the monitoring rule in the configuration information;

and when the preset frequency band is determined to be idle, transmitting data to receiving end equipment through the preset frequency band of the preset unauthorized frequency spectrum cell.

With reference to the fifth aspect, in a first possible implementation manner, the listening rule includes: monitoring time and back-off time;

the processor executing the instructions is specifically configured to: if monitoring determines that the preset frequency band of the preset unauthorized spectrum cell is in an idle state within the monitoring time, transmitting data to receiving end equipment through the preset frequency band; or the like, or, alternatively,

With reference to the first possible implementation manner of the fifth aspect, in a second possible implementation manner, the monitoring rule further includes a power threshold;

the processor executing the instructions is specifically configured to: if the power of each signal monitored and detected in the preset frequency band is smaller than the power threshold, determining that the preset frequency band is in an idle state; or the like, or, alternatively,

With reference to the fifth aspect, in a third possible implementation manner, the data includes a preset identifier corresponding to the data.

With reference to the third possible implementation manner of the fifth aspect, in a fourth possible implementation manner, the processor executes the instructions to specifically:

With reference to the fifth aspect, in a fifth possible implementation manner, when the sending end device is a base station and the receiving end device is a user equipment, the processor executes the instruction to specifically:

after the configuration information is obtained, the configuration information is sent to the receiving end equipment, so that the receiving end equipment receives and receives data in the indicated preset frequency band of the preset unlicensed spectrum cell according to the frequency band indication information in the configuration information.

With reference to the fifth possible implementation manner of the fifth aspect, in a sixth possible implementation manner, the processor executes the instructions to specifically:

With reference to the fifth aspect, in a seventh possible implementation manner, when the sending end device is a user equipment and the receiving end device is a base station, the processor executes the instruction to specifically:

and acquiring the configuration information from the receiving end equipment.

With reference to the seventh possible implementation manner of the fifth aspect, in an eighth possible implementation manner, the configuration information further includes an effective time, and the processor executes the instruction to specifically:

and after the configuration information is acquired, activating the preset unauthorized spectrum cell, and deactivating the preset unauthorized spectrum cell after the effective time interval so as to send data to the receiving terminal equipment within the effective time.

In a sixth aspect, a receiving end device is provided, where the receiving end device includes: a bus, and a processor, memory, and interface connected to the bus; the memory is to store instructions; the processor executing the instructions to:

acquiring configuration information, wherein the configuration information comprises frequency band indication information;

and receiving data sent by sending end equipment in a preset frequency band of a preset unlicensed frequency spectrum cell indicated by the frequency band indication information in the configuration information.

With reference to the sixth aspect, in a first possible implementation manner, the processor executes the instructions to specifically:

decoding the received data, acquiring a preset identifier corresponding to the received data, generating a feedback message and sending the feedback message to the sending terminal equipment so that the sending terminal equipment can retransmit the data according to the feedback message; the feedback message is used for indicating a preset identifier corresponding to the received data.

With reference to the first possible implementation manner of the sixth aspect, in a second possible implementation manner, the processor executes the instructions to specifically:

With reference to the sixth aspect, in a third possible implementation manner, when the receiving end device is a base station and the sending end device is a user device, the configuration information further includes a monitoring rule, and the processor executes the instruction to specifically:

and after the configuration information is acquired, sending the configuration information to the sending end equipment so that the sending end equipment can receive and monitor according to the monitoring rule in the configuration information, and sending data in a preset frequency band indicated by the frequency band indication information.

With reference to the third possible implementation manner of the sixth aspect, in a fourth possible implementation manner, the processor executes the instructions to specifically:

With reference to the sixth aspect, in a fifth possible implementation manner, when the receiving end device is a user equipment and the sending end device is a base station, the processor executes the instruction to specifically:

and acquiring the configuration information from the sending terminal equipment.

With reference to the fifth possible implementation manner of the sixth aspect, in a sixth possible implementation manner, the configuration information further includes an effective time, and the processor executes the instruction to specifically:

and after the configuration information is acquired, activating the preset unauthorized spectrum cell, and deactivating the preset unauthorized spectrum cell after the effective time interval so as to receive data from the sending terminal equipment within the effective time.

The embodiment of the invention provides a data transmission transmitting terminal device, a receiving terminal device and a method, wherein the transmitting terminal device acquires configuration information for configuration, monitors a preset frequency band indicated on a preset unauthorized frequency spectrum cell according to a monitoring rule in the configuration information, and transmits data after judging and determining that the preset frequency band is idle; and the receiving end equipment acquires the same configuration information for configuration, and receives data sent by the sending end equipment after monitoring in a preset frequency band indicated by the configuration information. Therefore, the problem of data loss in the transmission process due to competition and conflict on the unlicensed spectrum is reduced or eliminated, and the data transmission performance based on the unlicensed spectrum cell is improved.

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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a first schematic structural diagram of a sending end device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a sending-end device according to an embodiment of the present invention;

fig. 3 is a third schematic structural diagram of a sending-end device according to an embodiment of the present invention;

fig. 4 is a first schematic structural diagram of a receiving end device according to an embodiment of the present invention;

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

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

fig. 7 is a schematic structural diagram of a receiving end device according to a fourth embodiment of the present invention;

fig. 8 is a first flowchart illustrating a data transmission method according to an embodiment of the present invention;

fig. 9 is a flowchart illustrating a second data transmission method according to an embodiment of the present invention;

fig. 10 is a third flowchart illustrating a data transmission method according to an embodiment of the present invention;

fig. 11 is a fourth schematic flowchart of a data transmission method according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a sending-end device according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a receiving end device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

An embodiment of the present invention provides a sending-end device 00, and as shown in fig. 1, the sending-end device 00 includes:

first acquisition unit 001, listening unit 002, data transmission unit 003.

Specifically, the first obtaining unit 001 is configured to obtain configuration information; the configuration information includes: monitoring rules and frequency band indication information;

optionally, the configuration information may further include: one or more of a modulation coding scheme used for transmitting data, a redundancy version used for transmitting data, a size of a data block to be transmitted, and an effective time for transmitting data, and the contents included in the above listed configuration information are merely exemplary, including but not limited thereto.

Illustratively, the first obtaining unit 001 is further configured to obtain a spectrum cell selection message, before obtaining the configuration information, the spectrum cell selection message being used to determine a preset unlicensed spectrum cell used when data is to be transmitted.

The spectrum cell selection message may specifically include: presetting the frequency point, bandwidth value and cell identification of the unauthorized frequency spectrum cell, and using the duplex working mode as follows: frequency Division Duplexing (FDD), Time Division Duplexing (TDD), and other additional information (e.g., uplink and downlink configuration information may also be included in the TDD mode); and the information contained in the above listed spectrum cell selection messages is merely exemplary, including but not limited to.

In an implementation manner, the sending end device 00 is a base station, and the receiving end device is a user equipment, and the obtaining, by the first obtaining unit 001, the configuration information and the spectrum cell selection message may be: the configuration information and the spectrum cell selection message set by default at the sending end device 00 are obtained, or the configuration information and the spectrum cell selection message given by external input are obtained, which is not limited specifically.

Further, as shown in fig. 2, the sending-end device 00 further includes:

a first sending unit 004, configured to send the configuration information or the spectrum cell selection message to the receiving end device after the first obtaining unit 001 obtains the configuration information or the spectrum cell selection message, so that the receiving end device receives and receives data in the indicated preset frequency band of the preset unlicensed spectrum cell according to the spectrum cell selection message and the frequency band indication information in the configuration information.

The first sending unit 004 sends the configuration information to the receiving end device, and the configuration information can be sent by sending a notification message carrying the configuration information; the notification message may be: a system message; or, a dedicated Radio Resource Control (RRC) message, such as an RRC connection reconfiguration message; or, a Media Access Control (MAC) sublayer message, such as a MAC Control Element (CE); or Physical Layer (PHY) messages, such as scheduling commands. And the form of the above-listed notification message is merely exemplary, including but not limited thereto.

Optionally, the first sending unit 004 may send the notification message to the receiving end device through the authorized spectrum cell; the licensed spectrum Cell includes a Primary Cell (PCell) or a Secondary Cell (SCell), and the selection of using the PCell or the SCell may be according to a default setting of the sending end device 00 or may be preset in a communication protocol, which is not limited herein.

Alternatively, the first transmitting unit 004 may also transmit the notification message to the receiving end device through any unlicensed spectrum cell in which communication connections have been established with both the transmitting end device 00 and the receiving end device.

It should be mentioned that, if the receiving end device is in the signal coverage of a plurality of different base stations, the base station where the predetermined unlicensed spectrum cell to be used is located is the second base station, and the second base station is not the same base station as the sending end device 00, the sending end device 00 may establish a connection with the second base station through a predetermined interface and send the configuration information to the second base station, so that the second base station may obtain various configuration parameters used when performing data transmission with the receiving end device; and the sending end device 00 can perform data transmission with the receiving end device by using a preset unlicensed spectrum cell under the second base station through the connection relationship with the second base station.

The sending end device 00 and the second base station establish connection through a preset interface, and specifically, message transmission can be performed through a communication interface X2 interface or an Xn interface between the base stations (such as an interface between a main base station and an auxiliary base station); alternatively, the message may also be transmitted through the communication interface S1 between the base station and the core network, and then through the interaction between the core networks, which is not limited herein.

In another implementation manner, the sending end device 00 is a user equipment, and the receiving end device is a base station, and the obtaining, by the first obtaining unit 001, the configuration information or the spectrum cell selection message may be:

after the base station serving as the receiving end device acquires its default setting or acquires and inputs given configuration information or spectrum cell selection information from the outside, and transmits the configuration information or spectrum cell selection information to the transmitting end device 00, the first acquisition unit 001 receives the acquisition configuration information or spectrum cell selection information from the base station serving as the receiving end device.

According to the spectrum cell condition used when the receiving end device transmits, the first obtaining unit 001 may receive the configuration information or the spectrum cell selection message from the base station serving as the receiving end device through the authorized spectrum cell or the unlicensed spectrum cell in which communication connection has been established with both the transmitting end device 00 and the receiving end device.

Optionally, as shown in fig. 3, the sending-end device 00 further includes an activation unit 005;

when the configuration information includes the valid time for transmitting data, the activating unit 005 is configured to activate the preset unlicensed spectrum cell after the first obtaining unit 001 obtains the configuration information, and deactivate the preset unlicensed spectrum cell after the valid time is separated, so that the data transmitting unit 003 transmits data to the receiving end device within the valid time.

Or, when the configuration information does not include the valid time for transmitting data, the activating unit 005 is configured to activate the preset unlicensed spectrum cell after the first obtaining unit 001 obtains the configuration information, deactivate the preset unlicensed spectrum cell after the base station serving as the receiving end device instructs to stop transmitting data, and terminate transmitting data to the receiving end device.

Specifically, the monitoring unit 002 is configured to monitor the preset frequency band of the preset unlicensed spectrum cell indicated by the frequency band indication information according to the monitoring rule in the configuration information.

Wherein, the listening rule may include: monitoring time, back-off time and power threshold; the frequency band indication information is used for indicating preset frequency band resources used when data are transmitted on a preset unlicensed frequency spectrum cell; the content included in the above listed monitoring rule is only exemplary, and includes but not limited to this, the preset frequency band indicated by the frequency band indication information may be a part of frequency band resources on a preset unlicensed spectrum cell, or may be all frequency band resources on the preset unlicensed spectrum cell, and is not limited here.

Illustratively, the listening unit 002 is specifically configured to: after the first obtaining unit 001 obtains the configuration information and the preset unlicensed spectrum cell is activated, monitoring and judging whether a preset frequency band of the preset unlicensed spectrum cell is in an idle state within monitoring time; if the state is an idle state, transmitting data to receiving end equipment through a preset frequency band; or, if the state is a non-idle state, executing a backoff operation;

the operation of the monitoring unit 002 determining whether the preset frequency band is in the idle state may include: if the power of each signal monitored and detected in the preset frequency band is smaller than a power threshold, determining that the preset frequency band is in an idle state; or, if the power of any signal is monitored and detected to be not less than the power threshold in the preset frequency band, determining that the preset frequency band is in a non-idle state.

The backoff operation includes: when the monitoring unit 002 finds that the preset frequency band is in the non-idle state, the monitoring unit performs monitoring judgment on the preset frequency band again after the backoff time is set according to the backoff time in the monitoring rule. The backoff time is a waiting time from the time when the monitoring transmitting unit 002 monitors that the preset frequency band is not idle to the time when the monitoring operation is executed again to monitor the preset frequency band again;

specifically, the data transmitting unit 003 is configured to transmit data to the receiving end device through a preset frequency band of a preset unlicensed spectrum cell when the monitoring unit 002 determines that the preset frequency band is idle.

Optionally, the data sent by the data sending unit 003 to the receiving end device may include a preset identifier corresponding to the data.

For example, before sending data to the receiving end device, the data sending unit 003 is further configured to add a preset identifier corresponding to the data to each piece of data, so that the receiving end device generates and sends a feedback message to the sending end device according to the corresponding preset identifier in each piece of received data;

the preset identifier may be a sequence number added to a protocol header of the data, and the sequence number may represent the number of data packets sent from the sending end device 00 to the receiving end device; or, the preset identifier may also be a timestamp added to a protocol header of the data, where the timestamp may represent the time for the sending-end device 00 to send the data; the feedback message is used for indicating a preset identifier corresponding to the data received by the receiving end equipment; and the above listed preset identification forms are only exemplary, including but not limited thereto.

Further, the sending end device 00 receives a feedback message sent by the receiving end device, and may determine that the data received by the receiving end device and the data not received after the data transmission start according to the serial number or the timestamp of the received data fed back by the receiving end device, in combination with the unit time of the subframe of the data to be sent preset by the system; the data transmitting unit 003 retransmits the data that has not been received by the indicated receiving end device, according to the feedback message.

It should be noted that the feedback message sent by the receiving end device is only exemplary, and the feedback message may also directly indicate the data to be retransmitted to the sending end device 00 when the receiving end device determines that the data is not received according to the preset identifier analysis.

Optionally, in an implementation manner, the sending end device 00 is a base station, and the receiving end device is a user device, and in a process that the sending end device 00 sends data to the receiving end device through a preset unlicensed spectrum cell, the first obtaining unit 001 is further configured to obtain update information of the configuration information;

the data sending unit 003 is further configured to send the update information of the configuration information to the receiving end device through the preset unlicensed spectrum cell after the first obtaining unit 001 obtains the update information of the configuration information, and send data after the monitoring unit 002 performs subsequent monitoring according to the updated configuration information; so that the receiving end device receives the data subsequently sent by the sending end device 00 according to the updated configuration information.

The sending of the update information of the configuration information to the receiving end device by the data sending unit 003 may be implemented by sending a control signaling carrying the update information of the configuration information, where the control signaling may include: updating the used preset frequency band, updating the used modulation and coding mode, updating the used redundancy version and updating the used data block size; and the inclusion of the above listed control signaling is merely exemplary, including but not limited to.

The embodiment of the invention provides a sending end device, which is configured by acquiring configuration information, monitors an indicated preset frequency band according to a monitoring rule in the configuration information before sending data to a receiving end device by using a preset unauthorized spectrum cell, and sends the data after judging and determining that the preset frequency band is idle, so that the receiving end device receives the data in the preset frequency band after acquiring the same configuration information for configuration; further, after receiving the feedback message sent by the receiving end device, the data that is not received by the receiving end device is retransmitted. Therefore, the problem of data loss in the transmission process due to competition and conflict on the unlicensed spectrum is reduced or eliminated, and the data transmission performance based on the unlicensed spectrum cell is improved.

An embodiment of the present invention provides a receiving end device 01, as shown in fig. 4, where the receiving end device 01 includes:

a second acquisition unit 011 and a data reception unit 012.

Specifically, the second obtaining unit 011 is configured to obtain configuration information, where the configuration information includes: frequency band indication information;

optionally, the configuration information may further include: one or more of a listening rule used for transmitting data, a modulation and coding scheme used for transmitting data, a redundancy version used for transmitting data, a size of a data block to be transmitted, and an effective time for transmitting data, and the contents included in the above listed configuration information are merely exemplary, including but not limited thereto.

Illustratively, the second obtaining unit 011, before obtaining the configuration information, is further configured to obtain a spectrum cell selection message, where the spectrum cell selection message is used to determine a preset unlicensed spectrum cell used when data is to be transmitted.

The spectrum cell selection message may specifically include: presetting the frequency point, bandwidth value and cell identification of the unauthorized frequency spectrum cell, and using the duplex working mode as follows: FDD, TDD, and other additional information (e.g., uplink and downlink configuration information may also be included in TDD mode); and the information contained in the above listed spectrum cell selection messages is merely exemplary, including but not limited to.

In an implementation manner, the receiving end device 01 is a base station, the sending end device is a user equipment, and the second obtaining unit 011 obtains the configuration information and the spectrum cell selection message may be: the configuration information and the spectrum cell selection message set by the receiving end device 01 by default are obtained, or the configuration information and the spectrum cell selection message given by external input are obtained, which is not limited specifically.

Further, the configuration information further includes a monitoring rule, as shown in fig. 5, the receiving end device 01 further includes:

a second sending unit 013, configured to send the configuration information or the spectrum cell selection message to the sending end device after the second obtaining unit 011 obtains the configuration information or the spectrum cell selection message, so that the sending end device receives and monitors the spectrum cell selection message and the preset frequency band of the preset unlicensed spectrum cell indicated by the frequency band indication information in the configuration information according to the monitoring rule in the configuration information, and sends data.

The second sending unit 013 sends the configuration information to the sending end device, and may be implemented by sending a notification message carrying the configuration information; the notification message may be: a system message; or, an RRC message, such as an RRC connection reconfiguration message; or, MAC sublayer messages, such as MAC CE; or, a PHY message, such as a scheduling command, etc. And the form of the above-listed notification message is merely exemplary, including but not limited thereto.

Optionally, the second sending unit 013 may send the notification message to the sending end device through the licensed spectrum cell; the licensed spectrum cell includes a PCell or an SCell, and the selection of using the PCell or the SCell may be set according to a default of the receiving end device 01 or preset in a communication protocol, which is not limited herein.

Alternatively, second transmitting section 013 may transmit the notification message to the transmitting end device through any unlicensed spectrum cell in which communication connections with both the receiving end device 01 and the transmitting end device are established.

It should be noted that, if the sending end device is in the signal coverage of multiple different base stations, the base station where the predetermined unlicensed spectrum cell to be used is located is the second base station, and the second base station and the receiving end device 01 are not the same base station, the receiving end device 01 may establish connection with the second base station through a preset interface, and send the configuration information to the second base station, so that the second base station may obtain various configuration parameters used when performing data transmission with the sending end device; and the receiving end device 01 may perform data transmission with the sending end device by using a preset unlicensed spectrum cell under the second base station through a connection relationship with the second base station.

The receiving end device 01 and the second base station establish connection through a preset interface, and specifically, message transmission can be performed through a communication interface X2 interface or an Xn interface between the base stations (such as an interface between a main base station and an auxiliary base station); alternatively, the message may also be transmitted through the communication interface S1 between the base station and the core network, and then through the interaction between the core networks, which is not limited herein.

In another implementation, the receiving end device 01 is a user equipment, the sending end device is a base station, and the second obtaining unit 011 obtains the configuration information or the spectrum cell selection message may be:

after the base station serving as the transmitting end device acquires its own default setting or externally acquires and inputs given configuration information or spectrum cell selection message, and transmits the configuration information or spectrum cell selection message to the receiving end device 01, the second acquisition unit 011 receives the acquisition configuration information or spectrum cell selection message from the base station serving as the transmitting end device.

The second obtaining unit 011 may receive configuration information or a spectrum cell selection message from a base station serving as the sending end device through the authorized spectrum cell or an unlicensed spectrum cell in which communication connections have been established with both the receiving end device 01 and the sending end device, according to a spectrum cell used when the sending end device sends the configuration information or the spectrum cell selection message.

Optionally, as shown in fig. 6, the sink device 01 further includes an activation unit 014;

when the configuration information includes the valid time for transmitting data, the activating unit 014 is configured to activate the preset unlicensed spectrum cell after the second acquiring unit 011 acquires the configuration information, and deactivate the preset unlicensed spectrum cell after the valid time is separated, so that the data receiving unit 012 receives and transmits data sent by the sending end device within the valid time.

Or, when the configuration information does not include the valid time for transmitting data, the activating unit 014 is configured to activate the preset unlicensed spectrum cell after the second acquiring unit 011 acquires the configuration information, deactivate the preset unlicensed spectrum cell after the base station serving as the sending end device instructs to stop receiving data, and terminate receiving data from the sending end device.

Specifically, the data receiving unit 012 is configured to receive the data sent by the sending end device in the preset frequency band of the preset unlicensed spectrum cell indicated by the frequency band indication information in the configuration information.

Illustratively, the data receiving unit 012 is specifically configured to: the second obtaining unit 011 obtains the configuration information and the spectrum cell selection message, and receives data sent by the sending end device after the monitoring judgment is performed according to the monitoring rule at the indicated preset frequency band of the preset unauthorized spectrum cell according to the preset frequency band in the spectrum cell selection message and the configuration information after the preset unauthorized spectrum cell is activated.

Further, as shown in fig. 7, the receiving-end device 01 further includes:

a feedback unit 015, configured to decode the data received by the data receiving unit 012, obtain a preset identifier corresponding to the received data, generate a feedback message, and send the feedback message to the sending end device, so that the sending end device performs data retransmission according to the feedback message;

the preset identifier may be a sequence number added to a protocol header of data by the sending end device, and the sequence number may represent the number of data packets sent by the sending end device to the receiving end device 01; or, the preset identifier may also be a timestamp added to the protocol header of the data by the sending end device, where the timestamp may represent the time for the sending end device of the base station to send the data; and the above listed preset identification forms are only exemplary, including but not limited thereto.

The feedback message is used for indicating a preset identifier corresponding to the received data. The feedback message may be a PHY message, or, a MAC layer message; moreover, the feedback unit 015 may send the feedback message to the sending end device through a licensed spectrum cell, such as PCell or SCell; the feedback message may also be sent to the sending end device through an unlicensed spectrum cell in which communication connections have been established with both the receiving end device 01 and the sending end device. The message form and transmission manner of the feedback message are only exemplary, including but not limited to.

For example, the feedback unit 015 may generate a feedback message indicating the received data according to a preset identifier corresponding to the received data; alternatively, after determining that the transmitting-side device starts to transmit data based on the sequence number or the time stamp in combination with the unit time of the subframe in which data is transmitted preset by the system, the data receiving unit 012 may generate a feedback message indicating data that needs to be retransmitted, the received data and the unreceived data.

Optionally, the feedback unit 015 may decode the data to obtain a preset identifier corresponding to the data when receiving every data, and send a feedback message to the sending end device;

alternatively, the feedback unit 015 may decode each data after receiving one or more data within the preset feedback time, obtain a preset identifier corresponding to each data, and send a feedback message to the sending-end device. The preset feedback time may be equal to the effective time, or may be a default set value of another system or an external input set value, which is not limited herein.

Further, after receiving the feedback message sent by the feedback unit 015, the sending-end device determines, according to the feedback message, data that is not received by the receiving-end device 01, and retransmits the data that is not received.

The embodiment of the invention provides a receiving end device, which is configured by acquiring configuration information, and receives data sent in a preset frequency band after a sending end device monitors according to the same configuration information in the preset frequency band indicated by the configuration information; further, after receiving the data and determining the data receiving condition, sending a feedback message to the sending end device, so that the sending end device retransmits the data which is not received according to the feedback message. Therefore, the problem of data loss in the transmission process due to competition and conflict on the unlicensed spectrum is reduced or eliminated, and the data transmission performance based on the unlicensed spectrum cell is improved.

An embodiment of the present invention provides a data transmission method, as shown in fig. 8, the method including:

s101, the sending end equipment acquires configuration information, wherein the configuration information comprises: monitoring rules and frequency band indication information.

The monitoring rule comprises monitoring time and back-off time; the frequency band indication information is used for indicating a preset frequency band of a preset unauthorized frequency spectrum cell used by the sending end equipment when sending data to the receiving end equipment;

and S102, monitoring the preset frequency band of the preset unauthorized spectrum cell indicated by the frequency band indication information by the sending end equipment according to the monitoring rule in the configuration information.

The method comprises the steps that monitoring a preset frequency band comprises judging whether the preset frequency band is in an idle state within monitoring time; optionally, the monitoring rule further includes a power threshold, and if the power of each signal monitored and detected in the preset frequency band is smaller than the power threshold, the preset frequency band is determined to be in an idle state; or, if the power of any signal is monitored and detected to be not less than the power threshold in the preset frequency band, determining that the preset frequency band is in a non-idle state.

S103, when the preset frequency band is determined to be idle, the sending end device sends data to the receiving end device through the preset frequency band of the preset unauthorized frequency spectrum cell.

Optionally, when it is determined that the preset frequency band is not idle, the preset frequency band is monitored and determined again after the back-off time is separated according to the back-off time in the monitoring rule.

In a possible implementation manner, after sending data to the receiving end device, the sending end device receives a feedback message sent by the receiving end device; the feedback message is used for indicating a preset identifier corresponding to the data received by the receiving end equipment; and determining the data which is not received by the receiving terminal equipment according to the feedback message, and retransmitting the data which is not received.

It should be noted that the sending end device may be a base station or a user equipment, and the receiving end device may be a user equipment and a base station, and the specific selection is determined according to an actual application scenario, which is not limited herein.

The embodiment of the invention provides a data transmission method, which includes the steps of obtaining configuration information through sending end equipment for configuration, monitoring an indicated preset frequency band according to a monitoring rule in the configuration information before sending data to receiving end equipment by using a preset unauthorized frequency spectrum cell, and sending the data after judging that the preset frequency band is idle, so that the receiving end equipment can receive the data in the preset frequency band after obtaining the same configuration information for configuration. Therefore, the problem of data loss in the transmission process due to competition and conflict on the unlicensed spectrum is reduced or eliminated, and the data transmission performance based on the unlicensed spectrum cell is improved.

An embodiment of the present invention provides a data transmission method, as shown in fig. 9, where the method includes:

s201, the receiving end equipment acquires configuration information, wherein the configuration information comprises frequency band indication information.

The frequency band indication information is used for indicating a preset frequency band of a preset unauthorized frequency spectrum cell used when the receiving end equipment receives data sent by the sending end equipment;

s202, the receiving end equipment receives data sent by the sending end equipment in a preset frequency band of a preset unauthorized frequency spectrum cell indicated by the frequency band indication information in the configuration information.

In a possible implementation manner, after receiving data sent by a sending end device, a receiving end device decodes the data, obtains a preset identifier corresponding to the received data, generates a feedback message and sends the feedback message to the sending end device, so that the sending end device retransmits the data according to the feedback message; the feedback message is used for indicating a preset identifier corresponding to the received data.

The embodiment of the invention provides a data transmission method, which includes that configuration information is acquired through receiving end equipment for configuration, and data sent in a preset frequency band after monitoring by sending end equipment according to the same configuration information is received in the preset frequency band indicated by the configuration information. Therefore, the problem of data loss in the transmission process due to competition and conflict on the unlicensed spectrum is reduced or eliminated, and the data transmission performance based on the unlicensed spectrum cell is improved.

An embodiment of the present invention further provides a data transmission method, where in a possible application scenario, a sending end device is a base station, and a receiving end device is a user equipment, as shown in fig. 10, the method includes:

s301, the base station sends a spectrum cell selection message to the user equipment.

The spectrum cell selection message is used for designating a preset unauthorized spectrum cell to be used for data transmission between the base station and the user equipment, and the spectrum cell selection message can be set by default of a system or given by acquiring external input, and is not particularly limited; the base station selects a preset unauthorized frequency spectrum cell to be used for sending data according to the frequency spectrum cell selection message; and the user equipment selects a preset unauthorized spectrum cell to be used for receiving data according to the spectrum cell selection message.

For example, the spectrum cell selection message may specifically include: the frequency point, bandwidth value, cell identifier and used duplex working mode of the target unauthorized spectrum cell are as follows: FDD, TDD, and other additional information (e.g., uplink and downlink configuration information may also be included in TDD mode); and the information contained in the above listed spectrum cell selection messages is merely exemplary, including but not limited to.

S302, the base station acquires the configuration information and sends the configuration information to the user equipment.

The configuration information acquired by the base station includes: monitoring rules and frequency band indication information;

optionally, the configuration information may further include:

one or more of a modulation coding mode used for transmitting data, a redundancy version used for transmitting data, a size of a transmitted data block and effective time of the transmitted data; the content included in the configuration information listed above is only exemplary, including but not limited to, and the configuration information may be set by default in the system or given by acquiring external input, and is not limited in particular.

Further, the base station sends configuration information to the user equipment, and after receiving the configuration information, the user equipment may determine a preset frequency band used when receiving data sent by the base station according to frequency band indication information in the configuration information.

Illustratively, the base station sends the configuration information to the user equipment, which may be implemented by sending a notification message carrying the configuration information; the notification message may be: a system message; or, an RRC message, such as an RRC connection reconfiguration message; or, MAC sublayer messages, such as MAC CE; or, a PHY message, such as a scheduling command, etc. And the form of the above-listed notification message is merely exemplary, including but not limited thereto.

Optionally, the base station may send the notification message to the user equipment through the licensed spectrum cell; the licensed spectrum cell includes a PCell or an SCell, and the selection of using the PCell or the SCell may be set according to a default of the system or may be preset in a communication protocol, which is not limited herein.

Alternatively, the base station may send the notification message to the user equipment through any unlicensed spectrum cell in which a communication connection is established with both the base station and the user equipment.

It should be noted that, if the ue is in the signal coverage of multiple different base stations, the base station where the predetermined unlicensed spectrum cell to be used is located is the second base station, the base station sending the configuration information to the ue is the first base station, and the first base station and the second base station are not the same base station, the first base station may establish a connection with the second base station, and send the configuration information to the second base station, so that the second base station may obtain various configuration parameters used when performing data transmission with the ue; and the first base station can use a preset unlicensed spectrum cell under the second base station to perform data transmission with the user equipment through the connection relationship with the second base station.

The first base station and the second base station may establish a connection through a preset interface, and specifically, may perform transmission of a message through a communication interface X2 interface or an Xn interface between the base stations (e.g., an interface between a main base station and an auxiliary base station); alternatively, the message may also be transmitted through the communication interface S1 between the base station and the core network, and then through the interaction between the core networks, which is not limited herein.

S303, the user equipment activates the preset unlicensed spectrum cell.

Specifically, after receiving the configuration information, the user equipment activates the preset unlicensed spectrum cell.

Illustratively, when the configuration information acquired by the user equipment includes the valid time of the transmission data, the user equipment activates the preset unlicensed spectrum cell after acquiring the configuration information, and deactivates the preset unlicensed spectrum cell after the interval of the valid time, so as to receive the data sent by the base station within the valid time.

Or, when the configuration information does not include the valid time for transmitting the data, the user equipment activates the preset unauthorized spectrum cell after acquiring the configuration information, deactivates the preset unauthorized spectrum cell after the base station indicates to stop receiving the data, and terminates receiving the data from the base station.

S304, the base station monitors a preset frequency band of a preset unauthorized frequency spectrum cell.

Specifically, the base station monitors the preset frequency band of the preset unlicensed spectrum cell indicated by the frequency band indication information according to the monitoring rule in the configuration information.

Illustratively, the monitoring of the preset frequency band by the base station includes:

after the user equipment activates the preset unauthorized spectrum cell, the base station monitors and judges whether a preset frequency band of the preset unauthorized spectrum cell is in an idle state within monitoring time according to a monitoring rule in the configuration information; if the idle state is detected, sending data to the user equipment through a preset frequency band, and executing S305; or, if the state is a non-idle state, executing a backoff operation;

the operation of the base station determining whether the preset frequency band is in the idle state may include: if the power of each signal monitored and detected in the preset frequency band is smaller than a power threshold, determining that the preset frequency band is in an idle state; or, if the power of any signal is monitored and detected to be not less than the power threshold in the preset frequency band, determining that the preset frequency band is in a non-idle state.

The backoff operation includes: when the base station finds that the preset frequency band is in a non-idle state through monitoring, according to the back-off time in the monitoring rule, after the back-off time is separated, monitoring and judging the preset frequency band again, namely, re-executing S304. The backoff time is the waiting time from the moment when the base station monitors that the preset frequency band is not idle to the moment when the monitoring operation is executed again to monitor the preset frequency band again;

s305, the base station sends data to the user equipment.

Specifically, when the base station monitors, judges and determines that a preset frequency band is idle, data is sent to the user equipment through the preset frequency band of the preset unlicensed spectrum cell; and the user equipment receives the data sent by the base station in the preset frequency band of the preset unlicensed frequency spectrum cell indicated by the frequency band indication information in the configuration information.

Exemplarily, the user equipment acquires the spectrum cell selection message to determine a preset unauthorized spectrum, and activates the preset unauthorized spectrum cell after acquiring the configuration information; the base station sends data to the user equipment through a preset frequency band of a preset unauthorized frequency spectrum cell when monitoring, judging and determining that the preset frequency band is idle; and the user equipment determines a preset frequency band according to the frequency band indication information in the configuration information, and receives data sent by the base station after monitoring in the indicated preset frequency band of the preset unlicensed spectrum cell.

Optionally, the data sent by the base station to the user equipment may include a preset identifier corresponding to the data; illustratively, before the base station sends data to the user equipment, a preset identifier corresponding to the data is added to each data;

the preset identifier may be a sequence number added to a protocol header of the data, and the sequence number may represent the number of data packets sent by the base station to the user equipment; or, the preset identifier may also be a timestamp added to a protocol header of the data, where the timestamp may represent a time when the base station sends the data; and the above listed preset identification forms are only exemplary, including but not limited thereto.

S306, the user equipment sends a feedback message to the base station.

Specifically, the user equipment decodes the received data, acquires a preset identifier corresponding to the received data, generates a feedback message and sends the feedback message to the base station, so that the base station retransmits the data according to the feedback message;

the feedback message is used for indicating a preset identifier corresponding to the received data. The feedback message may be a PHY message, or, a MAC layer message; and the user equipment can send the feedback message to the base station through a licensed spectrum cell such as a PCell and an SCell; the feedback message may also be sent to the base station through an unlicensed spectrum cell that has established a communication connection with both the base station and the user equipment. The message form and transmission manner of the feedback message are only exemplary, including but not limited to.

For example, the user equipment may generate a feedback message indicating the received data according to a preset identifier corresponding to the received data; or, according to the sequence number or the timestamp, in combination with unit time of a subframe of data to be sent preset by the system, after determining that the base station starts sending data, the received data and the data which is not received by the base station themselves generate a feedback message indicating the data which needs to be retransmitted.

Optionally, the user equipment may decode the data to obtain a preset identifier corresponding to the data and send a feedback message to the base station every time the user equipment receives a piece of data;

or, after receiving one or more data within the preset feedback time, the ue may decode each data, obtain a preset identifier corresponding to each data, and send a feedback message to the base station. The preset feedback time may be equal to the effective time, or may be a default set value of another system or an external input set value, which is not limited herein.

And S307, the base station retransmits the data according to the feedback message.

Specifically, the base station receives a feedback message sent by the user equipment, and can determine the data received by the user equipment and the data not received after the data transmission is started according to the sequence number or the timestamp of the received data fed back by the user equipment and by combining unit time of a preset data transmission subframe of the system; and further retransmitting the data which is not received by the indicated user equipment according to the feedback message.

It should be noted that, if the feedback message sent by the ue directly indicates that the ue does not receive the preset identifier of the data, the indicated data to be retransmitted may be directly sent to the ue according to the feedback message.

Optionally, the base station may further obtain update information of the configuration information in a process of sending data to the user equipment through the preset unlicensed spectrum cell, and send the update information of the configuration information to the user equipment through the preset unlicensed spectrum cell after obtaining the update information of the configuration information; performing subsequent monitoring and data sending according to the updated configuration information; so that the user equipment receives the data subsequently transmitted by the base station according to the updated configuration information.

Wherein, the sending of the update information of the configuration information to the user equipment by the base station may be implemented by sending a control signaling carrying the update information of the configuration information, and the control signaling may include: updating the used preset frequency band, updating the used modulation and coding mode, updating the used redundancy version and updating the used data block size; and the inclusion of the above listed control signaling is merely exemplary, including but not limited to.

In another possible application scenario, where the sending end device is a user equipment and the receiving end device is a base station, as shown in fig. 11, the method includes:

s401, the base station sends a spectrum cell selection message to the user equipment.

The spectrum cell selection message is used for designating a preset unauthorized spectrum cell to be used for data transmission between the base station and the user equipment, and the spectrum cell selection message can be set by default of a system or given by acquiring external input, and is not particularly limited; the user equipment selects a preset unauthorized frequency spectrum cell to be used for sending data according to the frequency spectrum cell selection message; and the base station selects a preset unauthorized spectrum cell to be used for receiving data according to the spectrum cell selection message.

S402, the base station acquires the configuration information and sends the configuration information to the user equipment.

optionally, the configuration information may further include:

Further, the base station sends configuration information to the user equipment, and after receiving the configuration information, the user equipment may determine a preset frequency band used when sending data to the base station according to frequency band indication information in the configuration information.

S403, the user equipment activates the preset unlicensed spectrum cell.

Illustratively, when the configuration information acquired by the user equipment includes the valid time for transmitting data, the user equipment activates the preset unlicensed spectrum cell after acquiring the configuration information, and deactivates the preset unlicensed spectrum cell after the interval of the valid time, so as to send data to the base station within the valid time.

Or, when the configuration information does not include the valid time for transmitting the data, the user equipment activates the preset unauthorized spectrum cell after acquiring the configuration information, deactivates the preset unauthorized spectrum cell after the base station indicates to stop transmitting the data, and terminates transmitting the data to the base station.

S404, the user equipment monitors a preset frequency band of a preset unauthorized spectrum cell.

Illustratively, the monitoring of the preset frequency band by the user equipment includes:

after the user equipment activates the preset unauthorized spectrum cell, monitoring and judging whether a preset frequency band of the preset unauthorized spectrum cell is in an idle state within monitoring time according to a monitoring rule in the configuration information; if the state is the idle state, sending data to the user equipment through a preset frequency band, and executing S405; or, if the state is a non-idle state, executing a backoff operation;

the operation of the user equipment determining whether the preset frequency band is in the idle state may include: if the power of each signal monitored and detected in the preset frequency band is smaller than a power threshold, determining that the preset frequency band is in an idle state; or, if the power of any signal is monitored and detected to be not less than the power threshold in the preset frequency band, determining that the preset frequency band is in a non-idle state.

The backoff operation includes: when the user equipment finds that the preset frequency band is in a non-idle state in the monitoring process, the user equipment performs monitoring judgment on the preset frequency band again after the back-off time is separated according to the back-off time in the monitoring rule, that is, S404 is performed again. The back-off time is the waiting time from the moment when the user equipment monitors that the preset frequency band is not idle to the moment when the monitoring operation is executed again to monitor the preset frequency band again;

s405, the user equipment sends data to the base station.

Specifically, when the user equipment monitors and judges that a preset frequency band is idle, data is sent to the base station through the preset frequency band of the preset unauthorized spectrum cell; and the base station receives the data sent by the user equipment in the preset frequency band of the preset unlicensed frequency spectrum cell indicated by the frequency band indication information in the configuration information.

Illustratively, the user equipment acquires a spectrum cell selection message to determine a preset unauthorized spectrum, activates a preset unauthorized spectrum cell after acquiring configuration information, and transmits data to the base station through a preset frequency band of the preset unauthorized spectrum cell when monitoring and judging that the preset frequency band is idle according to the configuration information; and the base station determines a preset frequency band according to the frequency band indication information in the configuration information, and receives data sent by the user equipment after monitoring in the indicated preset frequency band of the preset unlicensed spectrum cell.

Optionally, the data sent by the user equipment to the base station may include a preset identifier corresponding to the data; illustratively, before the user equipment sends data to the base station, a preset identifier corresponding to the data is added to each data;

the preset identifier may be a sequence number added to a protocol header of the data, and the sequence number may represent the number of data packets sent by the user equipment to the base station; or, the preset identifier may also be a timestamp added to a protocol header of the data, where the timestamp may represent a time when the user equipment sends the data; and the above listed preset identification forms are only exemplary, including but not limited thereto.

S406, the base station sends a feedback message to the user equipment.

Specifically, the base station decodes the received data, acquires a preset identifier corresponding to the received data, generates a feedback message and sends the feedback message to the user equipment, so that the user equipment can retransmit the data according to the feedback message;

the feedback message is used for indicating a preset identifier corresponding to the received data. The feedback message may be a PHY message, or, a MAC layer message; and the base station can send the feedback message to the base station through a licensed spectrum cell such as a PCell and an SCell; the feedback message may also be sent to the base station through an unlicensed spectrum cell that has established a communication connection with both the base station and the user equipment. The message form and transmission manner of the feedback message are only exemplary, including but not limited to.

For example, the base station may generate a feedback message indicating the received data according to a preset identifier corresponding to the received data; or, after determining that the user equipment starts to send data according to the sequence number or the timestamp and by combining unit time of a subframe of data preset to be sent by the system, the data received by the user equipment and the data not received by the user equipment generate a feedback message indicating the data needing to be retransmitted.

Optionally, the base station may decode the data to obtain a preset identifier corresponding to the data and send a feedback message to the user equipment each time the base station receives a piece of data;

or, after receiving one or more data within the preset feedback time, the base station may decode each data, obtain a preset identifier corresponding to each data, and send a feedback message to the user equipment. The preset feedback time may be equal to the effective time, or may be a default set value of another system or an external input set value, which is not limited herein.

And S407, the user equipment retransmits the data according to the feedback message.

Specifically, the ue receives a feedback message sent by the base station, and determines, according to the sequence number or the timestamp of the received data fed back by the base station, the unit time of a subframe of data transmission preset by the system, the data received by the base station and the data not received after the data transmission is started; and further retransmitting the data which is not received by the indicated base station according to the feedback message.

It should be noted that, if the feedback message sent by the base station directly indicates that the base station does not receive the preset identifier of the data, the indicated data to be retransmitted can be directly sent to the base station according to the feedback message.

The embodiment of the invention provides a data transmission transmitting terminal device and a receiving terminal device, wherein the transmitting terminal device acquires configuration information for configuration, monitors a preset frequency band indicated on a preset unauthorized spectrum cell according to a monitoring rule in the configuration information, and transmits data after judging and determining that the preset frequency band is idle; and the receiving end equipment acquires the same configuration information for configuration, and receives data sent by the sending end equipment after monitoring in a preset frequency band indicated by the configuration information. Therefore, the problem of data loss in the transmission process due to competition and conflict on the unlicensed spectrum is reduced or eliminated, and the data transmission performance based on the unlicensed spectrum cell is improved.

An embodiment of the present invention provides a sending-end device 02, as shown in fig. 12, where the sending-end device 02 includes:

a bus 021, and a processor 022, a memory 023, and an interface 024 coupled to bus 021, wherein interface 024 is operative to enable connected communications between nodes;

the memory 023 is used to store instructions that the processor 022 executes in particular for obtaining configuration information.

Wherein the configuration information includes: monitoring rules and frequency band indication information.

The processor 022 executes the instructions to monitor a preset frequency band of a preset unlicensed spectrum cell indicated by the frequency band indication information according to the monitoring rule in the configuration information.

The processor 022 executes the instructions to transmit data to a receiving end device through a preset frequency band of a preset unlicensed spectrum cell when the preset frequency band is determined to be idle.

In this embodiment of the present invention, optionally, the monitoring rule includes: listening time, back-off time, the processor 022 executing the instructions may be specifically configured to:

if monitoring determines that the preset frequency band of the preset unauthorized spectrum cell is in an idle state within the monitoring time, transmitting data to receiving end equipment through the preset frequency band;

or, if the preset frequency band is determined to be in a non-idle state, monitoring and judging the preset frequency band again after the backoff time is separated according to the backoff time.

In this embodiment of the present invention, optionally, the listening rule further includes a power threshold, and the processor 022 executing the instructions may specifically be configured to:

if the power of each signal monitored and detected in the preset frequency band is smaller than a power threshold, determining that the preset frequency band is in an idle state;

or, if the power of any signal is monitored and detected to be not less than the power threshold in the preset frequency band, determining that the preset frequency band is in a non-idle state.

In the embodiment of the present invention, optionally, the data includes a preset identifier corresponding to the data.

For example, the processor 022 executing the instructions may be specifically configured to add a preset identifier corresponding to data to each data before sending the data to a receiving end device;

the preset identifier may be a sequence number added to a protocol header of the data, and the sequence number may represent the number of data packets sent to the receiving end device; or, the preset identifier may also be a timestamp added to a protocol header of the data, where the timestamp may represent a time for sending the data; and the above listed preset identification forms are only exemplary, including but not limited thereto.

In this embodiment of the present invention, optionally, the processor 022 executing the instructions may be specifically configured to:

receiving a feedback message sent by receiving end equipment; the feedback message is used for indicating a preset identifier corresponding to the data received by the receiving end equipment;

In this embodiment of the present invention, optionally, when the sending end device is a base station and the receiving end device is a user equipment, the processor 022 may specifically be configured to:

and after the configuration information is acquired, sending the configuration information to the receiving end equipment so that the receiving end equipment can receive and receive data in the indicated preset frequency band of the preset unlicensed spectrum cell according to the frequency band indication information in the configuration information.

transmitting configuration information to receiving end equipment through an authorized spectrum cell; or, the configuration information is sent to the receiving end device through the unlicensed spectrum cell which has established communication connection with the receiving end device.

In this embodiment of the present invention, optionally, when the sending end device is a user equipment and the receiving end device is a base station, the processor 022 may specifically be configured to execute the instruction to:

configuration information is obtained from the receiving end device.

In this embodiment of the present invention, optionally, the configuration information further includes a valid time, and the processor 022 executing the instructions may specifically be configured to:

An embodiment of the present invention provides a receiving end device 03, as shown in fig. 13, where the receiving end device 03 includes:

a bus 031, and a processor 032, a memory 033, and an interface 034 coupled to bus 031, where interface 034 is used to enable coupled communication between nodes;

the memory 033 is configured to store instructions that the processor 032 executes in particular for obtaining configuration information.

The configuration information includes frequency band indication information.

The processor 032 executes the instruction, and is further configured to receive, in the preset frequency band of the preset unlicensed spectrum cell indicated by the frequency band indication information in the configuration information, data sent by the sending end device.

In this embodiment of the present invention, optionally, the processor 032 executing the instructions may be specifically configured to:

sending a feedback message every time a data is received;

or after receiving one or more data within the preset feedback time, sending a feedback message. The preset feedback time may be equal to the effective time, or may be a default set value of another system or an external input set value, which is not limited herein.

In this embodiment of the present invention, optionally, when the receiving end device is a base station and the sending end device is a user device, the configuration information further includes a monitoring rule, and the processor 032 executes the instruction, which may specifically be used to:

and after the configuration information is acquired, sending the configuration information to the sending end equipment so that the sending end equipment can receive and monitor according to the monitoring rule in the configuration information, and sending data in the preset frequency band indicated by the frequency band indication information.

transmitting configuration information to transmitting terminal equipment through an authorized spectrum cell; or, the configuration information is sent to the sending end device through the unlicensed spectrum cell which has established communication connection with the sending end device.

In this embodiment of the present invention, optionally, when the receiving end device is a user equipment and the sending end device is a base station, the processor 032 executing the instruction may specifically be configured to:

the configuration information is obtained from the sending end device.

In this embodiment of the present invention, optionally, the configuration information further includes an effective time, and the processor 032 executing the instruction may specifically be configured to:

Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.

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

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A transmitting-end device, characterized in that the transmitting-end device comprises:

2. The sender device of claim 1, wherein the listening rules comprise: monitoring time and back-off time;

3. The sender device of claim 2, wherein the listening rule further comprises a power threshold;

4. The sender device of claim 1, wherein the data comprises a preset identifier corresponding to the data.

5. The sender device of claim 4, wherein the data sending unit is further specifically configured to:

6. The sender device according to claim 1, wherein when the sender device is a base station and the receiver device is a user device, the sender device further comprises:

7. The sender device of claim 6, wherein the first sending unit is specifically configured to:

8. The sender device according to claim 1, wherein when the sender device is a user device and the receiver device is a base station, the first obtaining unit is specifically configured to obtain the configuration information from the receiver device.

9. The sender device of claim 8, wherein the configuration information further includes a valid time, and wherein the sender device further comprises:

10. A sink device, comprising:

the second acquisition unit is used for acquiring configuration information, wherein the configuration information comprises a monitoring rule and frequency band indication information;

a second sending unit, configured to send the configuration information to a sending end device after the second obtaining unit obtains the configuration information, so that the sending end device receives and monitors according to the monitoring rule in the configuration information, and sends data in a preset frequency band indicated by the frequency band indication information;

and a data receiving unit, configured to receive, in the configuration information, data sent by the sending end device in a preset frequency band of a preset unlicensed spectrum cell indicated by the frequency band indication information.

11. The sink device according to claim 10, wherein the sink device further comprises:

12. The receiving-end device of claim 11, wherein the feedback unit is further configured to:

13. The receiving end device of claim 10, wherein the second sending unit is specifically configured to:

14. The receiving end device of claim 10, wherein when the receiving end device is a user equipment and the sending end device is a base station, the second obtaining unit is specifically configured to obtain the configuration information from the sending end device.

15. The sink device according to claim 14, wherein the configuration information further includes a valid time, the sink device further comprising:

16. A method of data transmission, the method comprising:

17. The method of claim 16,

18. The method of claim 17, wherein the listening rule further comprises a power threshold, the method further comprising:

19. The method of claim 16, wherein the data comprises a preset identification corresponding to the data.

20. The method of claim 19, further comprising:

21. The method of claim 16, wherein when the sending end device is a base station and the receiving end device is a user equipment, after the sending end device obtains configuration information, the method further comprises:

22. The method of claim 21, wherein the sending the configuration information from the sending end device to the receiving end device comprises:

23. The method of claim 16, wherein when the sending end device is a user equipment and the receiving end device is a base station, the obtaining, by the sending end device, configuration information comprises:

24. The method of claim 23, wherein the configuration information further includes a validity time, and wherein the method further comprises:

25. A method of data transmission, the method comprising:

the method comprises the steps that a receiving end device obtains configuration information, wherein the configuration information comprises a monitoring rule and frequency band indication information;

the receiving end equipment sends the configuration information to sending end equipment so that the sending end equipment can receive and monitor according to the monitoring rule in the configuration information, and sends data in a preset frequency band indicated by the frequency band indication information;

and the receiving end equipment receives the data sent by the sending end equipment in the preset frequency band of the preset unlicensed spectrum cell indicated by the frequency band indication information in the configuration information.

26. The method of claim 25, wherein after the receiving sender device listens for and sends data according to the listening rule, the method further comprises:

27. The method of claim 26, wherein generating and sending the feedback message to the sender device comprises:

28. The method of claim 25, wherein the sending, by the receiving end device, the configuration information to the sending end device comprises:

29. The method of claim 25, wherein when the receiving end device is a user equipment and the sending end device is a base station, the obtaining configuration information by the receiving end device comprises:

30. The method of claim 29, wherein the configuration information further includes a validity time, the method further comprising:

31. A transmitting-end device, characterized in that the transmitting-end device comprises: a bus, and a processor, memory, and interface connected to the bus; the memory is to store instructions; the processor executing the instructions to:

32. The sender device of claim 31, wherein the listening rules comprise: monitoring time and back-off time;

33. The sender device of claim 32, wherein the listening rule further comprises a power threshold;

34. The sender device of claim 31, wherein the data comprises a preset identifier corresponding to the data.

35. The sender device of claim 34, wherein the processor executing the instructions is specifically configured to:

36. The sender device of claim 31, wherein when the sender device is a base station and the receiver device is a user equipment, the processor executes the instruction to specifically:

37. The sender device of claim 36, wherein the processor executes the instructions to:

38. The sender device of claim 31, wherein when the sender device is a user equipment and the receiver device is a base station, the processor executes the instruction to specifically:

and acquiring the configuration information from the receiving end equipment.

39. The sender device of claim 38, wherein the configuration information further includes a valid time, and wherein the processor executing the instructions is specifically configured to:

40. A sink device, comprising: a bus, and a processor, memory, and interface connected to the bus; the memory is to store instructions; the processor executing the instructions to:

acquiring configuration information, wherein the configuration information comprises a monitoring rule and frequency band indication information;

sending the configuration information to sending end equipment so that the sending end equipment receives and monitors according to the monitoring rule in the configuration information, and sends data in a preset frequency band indicated by the frequency band indication information;

and receiving data sent by the sending end equipment in a preset frequency band of a preset unlicensed spectrum cell indicated by the frequency band indication information in the configuration information.

41. The receiving device of claim 40, wherein the processor executing the instructions is specifically configured to:

42. The receiving device of claim 41, wherein the processor executing the instructions is specifically configured to:

43. The receiving device of claim 40, wherein the processor executing the instructions is specifically configured to:

44. The receiving end device of claim 40, wherein when the receiving end device is a user equipment and the sending end device is a base station, the processor executes the instruction to specifically:

45. The receiving-end device of claim 44, wherein the configuration information further includes a valid time, and wherein the processor executing the instructions is specifically configured to: