CN106992839B

CN106992839B - Data transmission method and device

Info

Publication number: CN106992839B
Application number: CN201610042164.XA
Authority: CN
Inventors: 苟伟; 毕峰; 杨玲; 李新彩; 彭佛才
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-01-21
Filing date: 2016-01-21
Publication date: 2020-11-20
Anticipated expiration: 2036-01-21
Also published as: WO2017124937A1; CN106992839A

Abstract

The invention provides a method and a device for data transmission, wherein the method comprises the following steps: the network side configures uplink subframe position information and/or time interval information, wherein the uplink subframe position information is used for indicating candidate uplink subframes for transmitting uplink data corresponding to the uplink authorization information, and the time interval information is used for indicating a time interval between the transmission of the uplink authorization information and the transmission of the uplink data; a network side sends uplink subframe position information and/or time interval information to User Equipment (UE); and the network side receives uplink data transmitted by the UE on a subframe corresponding to the uplink subframe position information and/or the time interval information. The invention solves the problem that the uplink data transmission fails due to CCA detection failure or over-short maximum single use time limited in control in the prior art.

Description

Data transmission method and device

Technical Field

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

Background

Currently, communication networks of Long Term Evolution (Long Term Evolution, abbreviated as LTE) are all deployed in authorized carriers for operation, and with the development of LTE, some companies propose "to propose a topic for researching LTE deployment in unlicensed carriers", for example, the general companies in the united states consider that: with the rapid growth of data traffic, licensed carriers will not be able to withstand the enormous amount of data brought about by the rapid traffic growth in the near future. It is considered that data volume pressure caused by service growth can be solved by deploying LTE in an unlicensed carrier so as to share data traffic in a licensed carrier. Meanwhile, the unlicensed carrier has the following characteristics: on one hand, the unauthorized carrier does not need to be purchased, or the carrier resources have zero cost, so the unauthorized carrier is free or low in cost; on the other hand, because individuals and enterprises can participate in deployment and equipment of equipment manufacturers can also be used, the admission requirement of the unauthorized carrier wave is low; furthermore, the unlicensed carrier has sharing property, and when a plurality of different systems are operated in the unlicensed carrier or different operators of the same system operate in the unlicensed carrier, some resource sharing modes can be considered to improve the carrier efficiency.

In summary, although LTE deployment has obvious advantages in unlicensed carriers, problems still exist in the deployment process; the wireless access technology is multiple (different communication standards are crossed, cooperation is difficult, network topology is diverse), and the wireless access site is multiple (the number of users is large, cooperation is difficult, and centralized management overhead is large). Due to the fact that multiple wireless access technologies exist, various wireless systems exist in unauthorized carriers, coordination among the wireless systems is difficult, and interference is serious. Therefore, for LTE deployment in unlicensed carriers, it is still necessary to support regulation of unlicensed carriers, and most countries require that when systems are deployed in unlicensed carriers, a listen-before-talk mechanism needs to be supported. Interference between adjacent systems caused by simultaneous use of unlicensed carriers can be avoided through a listen-before-talk mechanism. And further introduces a contention backoff mechanism, that is, neighboring system stations (generally, neighboring transmission nodes of the same system) can avoid interference caused when neighboring transmission nodes of the same system use an unlicensed carrier at the same time through the contention backoff mechanism.

In addition, regulations stipulate that devices (including a base station and User Equipment (UE)) using an unlicensed carrier need to perform a listen-before-talk mechanism, namely Clear Channel Assessment (CCA), before transmitting, and when a Channel is idle, the device can transmit data using the unlicensed carrier Channel.

In the LTE system, data transmission of the UE is scheduled by the base station. For example, the base station sends an uplink Control signaling to the UE in a Physical Downlink Control Channel (PDCCH) of the subframe n or a DCI of an enhanced Physical Downlink Control Channel ePDCCH, where the Control signaling informs the UE to send data to the base station in a given coding modulation manner in resources (e.g., Physical resource blocks) in the subframe n + 4. In LTE, an uplink subframe in which a UE sends data and a subframe in which a base station sends an uplink control signaling keep a predetermined subframe interval, for example, in Frequency Division Duplex (FDD), the base station sends the uplink control signaling in a subframe n, and then the UE sends the uplink data (each subframe has a duration of 1ms) in a subframe n +4, and for Time Division Duplex (TDD), the interval is also predetermined in advance by a table manner, that is, after the UE receives the uplink control signaling, it can know that the uplink data should be sent in the next subframe through the predetermined table.

Fig. 1 is a schematic diagram of scheduling an LTE FDD system in the related art, as shown in fig. 1, when a base station sends an uplink grant signaling to a UE in a subframe K, the UE receives the signaling and knows that corresponding data is sent in a subframe K +4 according to the uplink grant signaling, but before the subframe K +4 arrives, the UE needs to perform CCA detection first, when it is detected that a channel is idle (energy in a detection channel is lower than a preset threshold), the UE may use the subframe K +4 to send data, and when it is detected that the channel is not idle (busy), the UE cannot use the subframe K +4 to send data. Obviously, when the latter occurs, the UE will not be able to send uplink data in the subframe agreed with the base station in advance, and this scheduling transmission will certainly fail. Meanwhile, the base station is also caused to fail in sending the uplink authorization signaling, and resources are wasted.

For the problem of uplink data transmission failure caused by CCA detection failure or too small maximum single use time limited in regulation in the related art, no effective solution exists at present.

Disclosure of Invention

The invention provides a data transmission method and a data transmission device, which at least solve the problem that uplink data transmission fails due to CCA detection failure or over-short maximum single use time limited in control in uplink data transmission in the related technology.

According to an aspect of the present invention, there is provided a method of data transmission, including: configuring uplink subframe position information and/or time interval information by a network side, wherein the uplink subframe position information is used for indicating candidate uplink subframes for transmitting uplink data corresponding to uplink authorization information, and the time interval information is used for indicating a time interval between the transmission of the uplink authorization information and the transmission of the uplink data; the network side sends the uplink subframe position information and/or the time interval information to User Equipment (UE); and the network side receives the uplink data sent by the UE on the subframe corresponding to the uplink subframe position information and/or the time interval information.

Further, the network side configures the uplink subframe location information and/or the time interval information in at least one of the following manners: the network side configures the uplink subframe position information and/or the time interval information for the UE through a special RRC message of the UE or a system broadcast RRC message; the network side configures the uplink subframe position information and/or the time interval information through physical layer signaling; the network side configures the position information and/or the time interval information of the uplink subframe in a mode of combining high-level signaling and physical layer signaling; the network side dynamically modifies the uplink subframe position information and/or the time interval information agreed with the UE in advance; and the network side configures the unified uplink subframe position information and/or the time interval information according to a cell or a carrier as a unit.

Further, the uplink subframe location information and/or the time interval information configured by the network side through the UE-specific RRC message or the system broadcast RRC message includes: the network side adds the uplink subframe position information and/or the time interval information in a UE dedicated RRC message; or, the network side adds the uplink subframe position information and/or the time interval information in a designated system information block of a system broadcast RRC message.

Further, the configuring, by the network side, the uplink subframe location information and/or the time interval information in a manner of combining a higher layer signaling and a physical layer signaling includes: the network side configures the time interval set and/or the uplink subframe set through high-level signaling; and the network side indicates the time interval information and/or the uplink subframe position information of the uplink data corresponding to the uplink authorization information from the time interval set and/or the uplink subframe set through physical layer signaling.

Further, the configuring, by the network side, the uplink subframe location information and/or the time interval information in a manner of combining a higher layer signaling and a physical layer signaling includes: the network side configures the position information of the uplink subframe through a high-level signaling and configures the time interval information through a physical layer signaling; or, the network side configures the time interval information through a high-level signaling, and configures the uplink subframe position information through a physical layer signaling.

Further, the configuring, by the network side, the uplink subframe location information and/or the time interval information in a manner of combining a higher layer signaling and a physical layer signaling includes: when the network side configures the time interval information and/or the uplink subframe information through high-level signaling and physical-layer signaling at the same time, the network side and the UE agree that the UE receives the time interval information and/or the uplink subframe information on the basis of physical-layer signaling notification.

Further, the configuring, by the network side through physical layer signaling, the uplink subframe location information and/or the time interval information includes: and the network side configures the position information and/or the time interval information of the uplink subframe by using bits in Downlink Control Information (DCI) in a Physical Downlink Control Channel (PDCCH).

Further, the configuring, by the network side, the unified uplink subframe location information and/or the time interval information according to a cell or a carrier as a unit includes: and the network side forwards the uplink subframe position information and/or the time interval information in other carriers or cells under the network side through a specified carrier.

Further, when the uplink subframe location information and/or the time interval information is carried by a physical downlink control channel, the network side configures the uplink subframe location information and/or the time interval information through downlink control information DCI; or, the network side and the UE re-agree a bit of a downlink assignment index, DAI, in downlink control information, DCI, where the bit is used to indicate that the bit is used as the uplink subframe location information and/or the time interval information in an unlicensed carrier; or, the network side and the UE re-agree with a bit of an uplink indication UL index in the DCI, where the bit is used to indicate that the bit is used as the uplink subframe location information and/or the time interval information in an unlicensed carrier.

Further, when the network side configures the time interval information and the uplink subframe location information at the same time, and the time interval information and the uplink subframe location information are both 2 types, the network side configures to use a 1 st bit in a Downlink Assignment Index (DAI) in Downlink Control Information (DCI) to indicate the time interval, and a 2 nd bit indicates the uplink subframe location information; or, the network side configures and uses the 1 st bit in the uplink indication UL index in the downlink control information DCI to indicate the time interval location information, and the 2 nd bit indicates the uplink subframe location information.

According to another aspect of the present invention, there is provided a method of data transmission, comprising: the method comprises the steps that User Equipment (UE) receives uplink subframe position information and/or time interval information which are configured and sent by a network side, wherein the uplink subframe position information is used for indicating candidate uplink subframes for sending uplink data corresponding to uplink authorization information, and the time interval information is used for indicating a time interval between the sending of the uplink authorization information and the sending of the uplink data; and the UE transmits the uplink data to the network side on the subframe corresponding to the uplink subframe position information and/or the time interval information.

Further, the receiving, by the UE, the uplink subframe location information and/or the time interval information configured and sent by the network side includes: and the UE receives the uplink subframe position information and/or the time interval information through high-level signaling and/or physical layer signaling.

Further, when the UE receives the uplink subframe location information and/or the time interval information configured by a high layer signaling and a physical layer signaling at the same time, the UE receives the uplink subframe location information and/or the time interval information according to a predetermined agreement with the network side, wherein the predetermined indication is based on the uplink subframe location information and/or the time interval information configured by the physical layer signaling.

According to still another aspect of the present invention, there is provided an apparatus for data transmission, applied to a network side, including: a configuration module, configured to configure uplink subframe location information and/or time interval information, where the uplink subframe location information is used to indicate a candidate uplink subframe for transmitting uplink data corresponding to uplink grant information, and the time interval information is used to indicate a time interval between transmitting the uplink grant information and transmitting the uplink data; a first sending module, configured to send the uplink subframe location information and/or the time interval information to a user equipment UE; a first receiving module, configured to receive the uplink data sent by the UE on a subframe corresponding to the uplink subframe location information and/or the time interval information.

According to still another aspect of the present invention, there is provided an apparatus for data transmission, applied to a UE side, including: a second receiving module, configured to receive uplink subframe location information and/or time interval information configured and sent by a network side, where the uplink subframe location information is used to indicate a candidate uplink subframe for sending uplink data corresponding to uplink grant information, and the time interval information is used to indicate a time interval between sending the uplink grant information and sending the uplink data; a second sending module, configured to send the uplink data to the network side on a subframe corresponding to the uplink subframe location information and/or the time interval information.

In the invention, a network side sends configured uplink subframe position information and/or time interval information to UE, the uplink subframe position information is used for indicating a candidate uplink subframe for sending uplink data corresponding to uplink authorization information, and the time interval information is used for indicating a time interval between sending the uplink authorization information and sending the uplink data, namely the network side configures the uplink subframe or the time interval for sending the uplink data in advance, even if CCA detection fails, the UE can obtain an unauthorized carrier, thereby solving the problem that uplink data sending fails due to CCA detection failure or the limited maximum single use time in regulation in the related technology.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a schematic diagram of LTE FDD system scheduling in the related art;

FIG. 2 is a first flowchart of a method of data transmission according to an embodiment of the present invention;

FIG. 3 is a flow chart two of a method of data transmission according to an embodiment of the present invention;

FIG. 4 is a block diagram of an apparatus for data transmission according to an embodiment of the present invention;

FIG. 5 is a block diagram of an apparatus for data transmission according to an alternative embodiment of the present invention;

fig. 6 is a schematic diagram of a time interval and a candidate uplink subframe according to an alternative embodiment of the present invention.

Detailed Description

The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

In this embodiment, a method for data transmission is provided, and fig. 2 is a first flowchart of the method for data transmission according to the embodiment of the present invention, as shown in fig. 2, the flowchart includes the following steps:

step S202, a network side configures uplink subframe position information and/or time interval information, wherein the uplink subframe position information is used for indicating candidate uplink subframes for transmitting uplink data corresponding to uplink authorization information, and the time interval information is used for indicating a time interval between the transmission of the uplink authorization information and the transmission of the uplink data;

step S204, the network side sends uplink subframe position information and/or time interval information to the user equipment UE;

step S206, the network side receives the uplink data sent by the UE on the subframe corresponding to the uplink subframe position information and/or the time interval information.

Through the above steps S202 to S206 of this embodiment, the network side sends configured uplink subframe location information and/or time interval information to the UE, where the uplink subframe location information is used to indicate a candidate uplink subframe for sending uplink data corresponding to the uplink grant information, and the time interval information is used to indicate a time interval between sending the uplink grant information and sending the uplink data, that is, the network side configures an uplink subframe or a time interval for sending the uplink data in advance, and the UE can obtain an unlicensed carrier even if CCA detection fails, thereby solving the problem in related art that uplink data transmission fails due to CCA detection failure or too small maximum single use duration limited in regulation.

For the network side configuring the uplink subframe location information and/or the time interval information in step S202 in this embodiment, in an optional implementation manner of this embodiment, the network side configures the uplink subframe location information and/or the time interval information in at least one of the following manners:

the first method is as follows: a network side configures uplink subframe position information and/or time interval information for User Equipment (UE) through a special RRC message of the UE or a system broadcast RRC message;

for the first mode, in the specific implementation of this embodiment, the following may be used: the network side adds the position information and/or time interval information of the uplink subframe in the RRC message special for the UE; or, the network side system broadcasts the designated system information block of the RRC message and adds the uplink subframe position information and/or the time interval information; further, the row subframe position information and/or the time interval information is sent to the UE through a UE-dedicated RRC message or a system broadcast RRC message;

for example, the above-mentioned time interval information is added to the UE-specific RRC message, and when the UE is configured with a (non-) authorized carrier, the network side may notify the uplink grant information in the (non-) authorized carrier and the time interval information of the corresponding uplink data transmission through the UE-specific RRC message configuring the (non-) authorized carrier. The UE always transmits uplink data according to the time interval in the RRC message using the configured (non-) licensed carrier.

The second method comprises the following steps: a network side configures uplink subframe position information and/or time interval information through physical layer signaling;

in an optional implementation manner of this embodiment, for the second implementation manner, the network side may configure the uplink subframe location information and/or the time interval information by using bits in the downlink control information DCI in the physical downlink control channel PDCCH.

In the second embodiment, the physical layer includes: a physical layer at a UE level and a common physical layer, that is, a network side dynamically configures time interval information corresponding to uplink authorization information every time by using signaling of the physical layer at the UE level; the network side adopts the signaling of the public physical layer to dynamically configure the time interval information corresponding to each uplink authorization information;

taking the UE-level physical layer as an example, the indication is expressed by using bits in the downlink control information DCI in the UE-specific (E) physical downlink control channel PDCCH, specifically including indicating by using bits in the DCI in the PDCCH for transmitting the uplink grant information, that is, using partial bits in the DCI to indicate a time interval between the uplink grant information and corresponding uplink data. After receiving the uplink authorization information, the UE determines the time or the subframe of uplink data transmission according to the time interval information in the uplink authorization information.

The third method comprises the following steps: a network side configures uplink subframe position information and/or time interval information in a mode of combining high-level signaling and physical layer signaling;

as for the third mode, in an optional implementation manner of this embodiment, the network side may configure the time interval set and/or the uplink subframe set through a higher layer signaling; and the network side indicates the time interval information and/or the uplink subframe position information of the uplink data corresponding to the uplink authorization information from the time interval set and/or the uplink subframe set through physical layer signaling.

In another optional implementation manner of this embodiment, the network side may configure uplink subframe location information through high-level signaling, and configure time interval information through physical layer signaling; or, the network side configures the time interval information through high-level signaling and configures the position information of the uplink subframe through physical-level signaling.

It should be noted that, when the network side configures the time interval information and/or the uplink subframe information through the high layer signaling and the physical layer signaling at the same time, the network side and the UE agree that the UE receives the time interval information and/or the uplink subframe information based on the physical layer signaling notification.

For example, the network side configures the uplink grant information and the corresponding time interval information for uplink data transmission through higher layer signaling (RRC message, including broadcast type and UE-specific RRC message). The network side can reconfigure the time interval information again through the physical layer signaling, at this time, the configured interval information is different from that indicated by the high layer signaling, and the network side and the receiving end agree that when the time interval information (or when being different) notified by the high layer and the physical layer is found, the network side and the receiving end should use the time interval notified by the physical layer as the time interval between the current (or current) uplink authorization information and the corresponding uplink data. The time interval of the higher layer notification still follows.

The method is as follows: and the network side dynamically modifies the uplink subframe position information and/or the time interval information appointed by the UE in advance.

In a specific embodiment, the network side and the UE may agree to use a common time interval (time interval information is not sent), and then the network side dynamically modifies the time interval between the uplink grant information in the current time (or the time interval between the current burst data transmission after the unauthorized carrier is preempted) and the corresponding uplink data according to the scheduling requirement. The agreed time interval is still followed thereafter. This approach is well suited to situations where certain intervals of time are used often, while other intervals are not. For example, the usage time interval is set to be 4 subframes, and when the base station needs to use 2 subframes, the base station notifies the UE through physical layer signaling (for example, the foregoing physical layer signaling). After the UE receives the uplink authorization information, the time interval between the uplink authorization information and the corresponding uplink data transmission is considered to be 2 subframes

The fifth mode is as follows: and the network side configures unified uplink subframe position information and/or time interval information according to the cell or carrier as a unit.

And the network side forwards the uplink subframe position information and/or the time interval information in other carriers or cells under the network side through the appointed carrier.

In addition, in an optional implementation manner of this embodiment, as to the first to fifth implementation manners, when the uplink subframe location information and/or the time interval information are carried by a physical downlink control channel, the method of this embodiment may further include:

a network side configures uplink subframe position information and/or time interval information through Downlink Control Information (DCI); or, the network side and the UE re-agree a bit of a downlink assignment index, DAI, in the DCI, where the bit is used to indicate that the bit is used as uplink subframe location information and/or time interval information in an unlicensed carrier; or, the network side and the UE re-agree with a bit of an uplink indication UL index in the downlink control information DCI, where the bit is used to indicate that the bit is used as uplink subframe location information and/or time interval information in the unlicensed carrier.

That is, when the network side configures time interval information and uplink subframe location information at the same time, and the time interval information and the uplink subframe location information are both 2 types, the network side configures and uses the 1 st bit in the downlink assignment index DAI in the downlink control information DCI to indicate the time interval, and the 2 nd bit indicates the uplink subframe location information; or, the network side configures and uses the 1 st bit in the uplink indication UL index in the downlink control information DCI to indicate the time interval position information, and the 2 nd bit to indicate the uplink subframe position information.

Fig. 3 is a second flowchart of a method for data transmission according to an embodiment of the present invention, and as shown in fig. 3, the method includes the steps of:

step S302: the method comprises the steps that User Equipment (UE) receives uplink subframe position information and/or time interval information which are configured and sent by a network side, wherein the uplink subframe position information is used for indicating candidate uplink subframes for sending uplink data corresponding to uplink authorization information, and the time interval information is used for indicating a time interval between the sending of the uplink authorization information and the sending of the uplink data;

in this embodiment, the UE may receive the uplink subframe location information and/or the time interval information through a higher layer signaling and/or a physical layer signaling

Step S304: and the UE transmits the uplink data to the network side on the subframe corresponding to the uplink subframe position information and/or the time interval information.

It should be noted that, when the UE receives the uplink subframe location information and/or the time interval information configured by the high layer signaling and the physical layer signaling at the same time, the UE receives the uplink subframe location information and/or the time interval information in advance with agreement with the network side, where the agreement indication is based on the uplink subframe location information and/or the time interval information configured by the physical layer signaling.

Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.

In this embodiment, a data transmission apparatus is further provided, where the apparatus is applied to a network side or a UE side, and the apparatus is used to implement the foregoing embodiments and preferred embodiments, and details are not repeated after the description is made. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.

Fig. 4 is a block diagram of a first structure of a data transmission apparatus according to an embodiment of the present invention, which is applied to a network side, as shown in fig. 4, the apparatus includes: a configuration module 42, configured to configure uplink subframe location information and/or time interval information, where the uplink subframe location information is used to indicate a candidate uplink subframe for transmitting uplink data corresponding to the uplink grant information, and the time interval information is used to indicate a time interval between transmitting the uplink grant information and transmitting the uplink data; a first sending module 44, coupled to the configuring module 42, configured to send uplink subframe location information and/or time interval information to the UE; a first receiving module 46, coupled to the first receiving module 46, for receiving uplink data transmitted by the UE on a subframe corresponding to the uplink subframe location information and/or the time interval information.

Optionally, the configuration module 42 in this embodiment includes at least one of: a first configuration unit, configured to configure uplink subframe location information and/or time interval information for a user equipment UE through a dedicated RRC message for the UE or a system broadcast RRC message; a second configuration unit, configured to configure uplink subframe location information and/or time interval information through physical layer signaling; a third configuration unit, configured to configure uplink subframe location information and/or time interval information in a manner of combining high-level signaling and physical layer signaling; a fourth configuration unit, configured to dynamically modify uplink subframe location information and/or time interval information agreed with the UE in advance; and the fifth configuration unit is used for configuring the unified uplink subframe position information and/or the unified time interval information according to the unit of the cell or the carrier.

The first configuration unit may be, in a specific application scenario, configured to add uplink subframe location information and/or time interval information in a UE-specific RRC message; or, adding the uplink subframe position information and/or the time interval information in a designated system information block of the system broadcast RRC message.

The third configuring unit may be, in a specific application scenario, configured to configure the time interval set and/or the uplink subframe set through a high-layer signaling; and then indicating the time interval information and/or the uplink subframe position information of the uplink data corresponding to the uplink authorization information from the time interval set and/or the uplink subframe set through physical layer signaling. Or, the method is used for configuring the uplink subframe position information through the high-level signaling and configuring the time interval information through the physical layer signaling; or, the method and the device are used for configuring time interval information through high-layer signaling and configuring uplink subframe position information through physical layer signaling.

Optionally, in a specific application scenario, the second configuration unit is further configured to configure, by using a bit in downlink control information DCI in a physical downlink control channel PDCCH, uplink subframe location information and/or time interval information.

Optionally, in a specific application scenario, the fifth configuration unit forwards, by using a specific carrier, uplink subframe location information and/or time interval information in another carrier or a cell on the network side.

In another optional implementation manner of this embodiment, when the uplink subframe location information and/or the time interval information is carried by a physical downlink control channel, this embodiment further includes: a first configuration module, configured to configure uplink subframe location information and/or time interval information through downlink control information DCI; or, a second configuration module, configured to re-agree, with the UE, a bit of a downlink assignment index, DAI, in a downlink control information, DCI, where the bit is used to indicate that the bit is used as uplink subframe location information and/or time interval information in an unlicensed carrier; or, a third configuration module, configured to re-agree, with the UE, a bit of an uplink indication UL index in the DCI, where the bit is used to indicate that the bit is used as uplink subframe location information and/or time interval information in an unlicensed carrier.

Optionally, the second configuration module is further configured to configure, on the network side, time interval information and uplink subframe location information at the same time, and when the time interval information and the uplink subframe location information are both 2 types, the network side configures to use a 1 st bit in a Downlink Assignment Index (DAI) in Downlink Control Information (DCI) to indicate a time interval, and a 2 nd bit indicates the uplink subframe location information; or, the third configuring module is further configured to configure and use a 1 st bit in the uplink indication UL index in the downlink control information DCI to indicate the time interval location information, and a 2 nd bit to indicate the uplink subframe location information.

Fig. 5 is a block diagram of a second structure of an apparatus for data transmission according to an alternative embodiment of the present invention, which is applied to a UE side, as shown in fig. 5, the apparatus includes: a second receiving module 52, configured to receive uplink subframe location information and/or time interval information configured and sent by a network side, where the uplink subframe location information is used to indicate a candidate uplink subframe for sending uplink data corresponding to the uplink grant information, and the time interval information is used to indicate a time interval between sending the uplink grant information and sending the uplink data; and a second sending module 54, coupled to the second receiving module 52, configured to send uplink data to the network side on a subframe corresponding to the uplink subframe location information and/or the time interval information.

It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in a plurality of processors.

The invention will now be illustrated with reference to an alternative embodiment thereof;

with the increase of hardware processing level of a receiving end (e.g., UE) and a network side (e.g., a base station), a time interval between uplink grant information and corresponding uplink data transmission originally defined in the LTE system may also be changed from 4 subframes (4ms, for example, in an FDD system) to 2 subframes (just an example), and at this time, for a new UE, the new UE may operate according to a new time interval, or may need to operate according to a time interval at some time.

Therefore, the present alternative embodiment provides a control signaling enhancement and a corresponding using method, and the following describes the present alternative embodiment with two embodiments;

alternative embodiment 1

A network side (such as a base station) configures the time interval and sends configuration information to a receiving end (UE); the receiving end receives the time interval configuration information, applies the time interval configuration information, determines the time position of uplink data transmission corresponding to the received uplink authorization information, and transmits the uplink data at the corresponding time position; and the network side receives corresponding uplink data in the corresponding uplink subframe according to the configured time interval.

It should be noted that, the time interval information referred to in this optional embodiment is a time interval (or a number of subframes) between a time (or a subframe) of transmitting the uplink grant information and a time (or a subframe) of transmitting corresponding uplink data, for example, when the time interval is described according to a time length, the time interval may be 2ms, 4ms, or 1 ms; and the description in terms of the number of subframes of the interval may be 2 subframes, 4 subframes, etc.

The following describes a method for sending time interval information and corresponding receiving end behavior flow with reference to an optional implementation manner of this optional embodiment:

in optional embodiment 1, the network side dynamically configures time interval information corresponding to each uplink grant information by using signaling of the physical layer at the UE level.

Wherein, the bits in the Downlink Control Information (DCI) in the Physical Downlink Control Channel (DCCH) or the Enhanced Physical Downlink Control Channel (EPDCCH) dedicated to the UE are used to represent, and in a specific application scenario, the bits may be: the bits in the DCI in the PDCCH transmitting the uplink grant information are used for indicating, that is, the partial bits are used in the DCI to indicate the time interval between the uplink grant information and the corresponding uplink data. After receiving the uplink authorization information, the UE determines the time or the subframe of uplink data transmission according to the time interval information in the uplink authorization information.

In optional embodiment 2, the network side dynamically configures time interval information corresponding to each uplink grant information by using a common signaling of the physical layer.

The DCI 1C is used to transmit the time interval information through the (E) PDCCH common search region, where the time interval information is valid for all UEs in the cell, and the time interval information may be transmitted in each downlink subframe preempted by the base station. After receiving the uplink grant information, the receiving end determines the time or subframe for transmitting the uplink data by combining the time interval information configured in the common DCI.

Optionally, in embodiment 3, the network side sends the time interval information by using a dedicated RRC message.

And initiating jeans, namely adding the time interval information into the UE-dedicated RRC message, and when the UE is configured with the (non-) authorized carrier, the base station can inform the uplink authorization information in the (non-) authorized carrier and the corresponding time interval information for transmitting the uplink data through the dedicated RRC message for configuring the (non-) authorized carrier for the UE. The UE always transmits uplink data according to the time interval in the RRC message using the configured (non-) licensed carrier.

Embodiment 4 may be implemented by a network side sending the time interval information by using a broadcast RRC message.

The time interval and the corresponding carrier information are added to the system information block 1, (when the information is configured and transmitted in a carrier unit, the carrier information is already contained in the system information block 1, only the time interval information needs to be added, and the carrier information is applied to the carrier corresponding to the system information block 1 by default). When the base station configures (non-) authorized carrier for the UE, the UE can know the above time interval information in the configured (non-) authorized carrier by forwarding the configured (non-) authorized carrier system information block 1 through UE-specific RRC message. The UE always transmits uplink data according to the time interval in the RRC message using the broadcast type described above in the configured (non-) licensed carrier. For the case of the primary component carrier, the UE may obtain the time interval information in the carrier by receiving the system information block 1 in the carrier.

Alternative embodiment 5, the network side notifies or adjusts or uses the time interval by combining higher layer signaling and physical layer signaling.

The network side configures uplink grant information and corresponding uplink data transmission time interval information through high-level signaling (RRC messages, including broadcast type and UE-specific RRC messages). The network side can reconfigure the time interval information again through the physical layer signaling, at this time, the configured interval information is different from that indicated by the high layer signaling, and the network side and the receiving end agree that when the time interval information (or when being different) notified by the high layer and the physical layer is found, the network side and the receiving end should use the time interval notified by the physical layer as the time interval between the current (or current) uplink authorization information and the corresponding uplink data. The time interval of the higher layer notification still follows.

By the method, the inflexibility of semi-static change of high-level signaling can be overcome, and the obvious increase of physical layer signaling overhead can be avoided.

In the optional embodiment 6, the network side and the receiving end agree on a certain time interval, and then the network side dynamically modifies the time interval through physical layer signaling (or higher layer signaling).

The network side and the receiving end agree to use a common time interval (time interval information is not sent), and then the network side dynamically modifies the time interval between the uplink authorization information in the current time (or the time of the burst data transmission after the unauthorized carrier wave is preempted) and the corresponding uplink data according to the scheduling requirement. The agreed time interval is still followed thereafter. This approach is well suited to situations where certain intervals of time are used often, while other intervals are not. For example, the usage time interval is set to be 4 subframes, and when the base station needs to use 2 subframes, the base station notifies the UE through physical layer signaling (for example, the foregoing physical layer signaling). After receiving the uplink grant information, the UE considers that the time interval between the uplink grant information and the corresponding uplink data transmission is 2 subframes.

It should be noted that, in the above optional embodiment, when the (E) PDCCH is used to carry the time interval information, the specific signaling design of the optional embodiment is as follows:

scheme 1, redefines and describes time interval information using bits of UL index in DCI in (E) PDCCH. When there are 2 candidate time intervals in the system, e.g. 2 and 4, respectively, then this is described by the first bit of the bits of the UL index (the second bit is reserved at this time). When the UE is configured to use the unlicensed carrier or the licensed carrier (but the licensed carrier does not use the TDD uplink/downlink subframe configuration 0 at this time), the UE considers that the original UL index bit information is used to describe the time interval information.

Scheme 2, redefines and describes time interval information using bits of DAI in DCI in (E) PDCCH. When there are 2 candidate time intervals in the system, e.g. 2 and 4, respectively, then this is described by the first bit of the bits of the DAI (the second bit is reserved at this time).

In scheme 3, the station uses bits in DCI 1C to describe the time interval information, transmits in the PDCCH common search space of the subframe, and fixedly uses the first 4 or 8 CCEs. For example, the information describing the time interval is added to DCI information describing a symbol occupied by the last downlink subframe. The DCI containing the information of the time interval may be transmitted in each downlink subframe or in the last 2 downlink subframes.

The time interval information can also be sent by using a PHICH channel. Since the PHICH channel is no longer used in the unlicensed carrier in the related art, in an alternative embodiment, the PHICH can be used when it is necessary to configure the time interval information through physical layer signaling in the unlicensed carrier. For example, using the resource of PHICH, the DCI coding mapping rule of PDCCH is adopted; or directly using the PHICH resource and the coding mapping rule of the PHICH.

The network side and the UE side may also agree on a corresponding service transmission time interval according to the service class (e.g., service QoS). For example, for the transmitted traffic, both the network side and the receiving side know the corresponding QoS class, for example, a certain QoS class or certain QoS class traffic corresponds to a time interval of 2, and some corresponding time intervals are 4, so when the corresponding traffic is scheduled for transmission, both the network side and the receiving side receive and transmit by default using the appointed time interval.

After the UE receives or obtains the time interval information in an agreed manner, the UE then transmits uplink data in the corresponding subframe according to the relevant control information (e.g., resource allocation, MCS, etc.) in the DCI.

An alternative embodiment two:

and the base station (network side) and the UE predetermine candidate uplink subframe positions of uplink data transmission corresponding to the appointed uplink authorization information. After the UE receives the uplink authorization information, the UE confirms the position of the candidate uplink subframe according to the convention.

And when the CCA detection is idle, the UE transmits data by using the remaining candidate uplink subframes.

The network side and the UE side agree that, after each time of sending the uplink grant information, 2 or 3 or 4 candidate uplink subframes are agreed to be used for sending uplink data corresponding to the uplink grant information according to a given time interval (for example, when LTE does not consider introducing a new time interval, the interval is 4 subframes). For example, the network side and the UE side agree that the number of candidate uplink subframes is 2 (the more the number of agreed candidate uplink subframes is, the higher the detection complexity of the network side is), at this time, the base station sends uplink authorization information to the UE in the subframe K, the UE receives the uplink authorization information in the subframe K, and then the UE can know that the data candidate uplink subframes corresponding to the current uplink authorization information are K +4 and K + 5. K +4 is a normal time interval of the LTE system, and since there are 2 candidate uplink subframes agreed, one uplink subframe, that is, K +5, is carried forward backward. By adopting the appointed mode, the signaling does not need to be sent to the UE, thereby saving the signaling overhead.

Of course, the candidate uplink subframe number may also be configured and changed semi-statically through higher layer signaling, for example, UE-specific RRC message or broadcast type RRC message. For example, if different UEs are set to have different candidate uplink subframe numbers, the base station may configure the corresponding candidate uplink subframe numbers according to the requirements and capabilities of the UEs by using the UE-specific RRC message for the different UEs, and may also include starting subframes of the candidate uplink subframes (which are also suitable for the description of the above section, and the starting subframe of the actual default candidate uplink subframe of the above section is K +4, that is, the default interval supported by the system). For example, when different default intervals are supported in the system, for example, the default interval between the authorized carriers is 4, and the default interval of the unauthorized carriers is 2, or may be configured as 2, the base station may configure the starting subframe of the UE candidate uplink subframe according to the capability of the UE (whether a new default interval 2 is supported).

The base station may also configure the number of candidate uplink subframes and/or the starting subframe at a cell level, or at a carrier level, by a broadcast type RRC message. Thus, all UEs in the cell or UEs using the carrier transmit uplink data according to the candidate uplink subframes configured in the broadcast message.

Obviously, if the number of candidate uplink subframes is used as a parameter, all the manners of sending the time interval parameter can be used to send the parameter, and the usage manners are the same, and the behaviors of the UE side and the base station side are slightly modified according to the functions and actions of the candidate uplink subframes.

For example, the number of candidate uplink subframes may also be transmitted through DCI, PHICH, etc. of the physical layer, or a manner of combining the physical layer and the higher layer, or a manner of semi-static configuration of the higher layer and dynamic validation of the physical layer at the current time. And the high layer configures the number and/or time interval of the candidate uplink subframes, then instantly modifies the number and/or time interval of the candidate uplink subframes corresponding to the current uplink authorization information through physical layer signaling, and if the UE receives the physical layer signaling, the UE processes the number and/or time interval of the current candidate uplink subframes according to the physical layer signaling, otherwise, the UE processes the candidate uplink subframes according to the high layer signaling configuration.

It may also be adopted that the higher layer signaling configures the possible number of candidate uplink subframes, for example, configures the number of candidate uplink subframes as {1,2, 3, 4}, or {1,2} or {1,3}, etc., in short, the higher layer signaling configures the set of the number of candidate uplink subframes. Then, the physical layer signaling specifically indicates the number of candidate uplink subframes specifically corresponding to the current uplink grant information, for example, the high layer configuration is {1,2}, and the physical layer signaling indicates that the number of current candidate uplink subframes is 1 or 2. This approach may also be used for indication of time intervals.

Fig. 6 is a schematic diagram of a time interval and a candidate uplink subframe according to an alternative embodiment of the present invention, and as shown in fig. 6, an uplink subframe set for uplink data transmission corresponding to uplink grant information is described by the time interval and the number of candidate uplink subframes. After the UE successfully performs CCA before or in the middle of the uplink subframe in the set, one or more subframes may be selected for the uplink data transmission. Generally, the base station determines the time interval first and then determines the number of candidate uplink subframes, it should be noted that the candidate uplink subframes in fig. 6 are illustrated by the time interval being 2, but in other alternative embodiments, the time interval or the number of candidate uplink subframes may be determined, and the other is notified, or both parameters may be notified. The manner of notification may adopt the manner described above in this alternative embodiment.

This optional embodiment further provides another optional implementation manner, where when the base station transmits one uplink subframe according to uplink data corresponding to one existing uplink grant message, if the UE fails to perform CCA, the base station configures a candidate uplink subframe set for the UE next time.

In this optional embodiment, the signaling design of the number of candidate uplink subframes may be:

scheme 1, redefined and described using bits of UL index in DCI in the existing (E) PDCCH. When the number of the candidate uplink subframes is designed to be 1 fixed value, for example, 2 uplink subframes are fixed, and the fixed starting subframe is determined as subframe +4 of the uplink grant information. In this case, one bit in the UL index in the DCI is directly used to trigger whether a candidate uplink subframe number of 2 is configured for the UE or there is no candidate uplink subframe (i.e. there is only one uplink subframe in the existing mechanism). When the starting subframe of the candidate uplink subframe is designed to be 2 (i.e. the time interval is 2), and the number of the candidate uplink subframes is 2 possible values, for example, 2 uplink subframes or 1 uplink subframe (1 uplink subframe is the existing mode), the signaling is designed to use one bit in the UL index in the DCI to indicate the starting subframe or the time interval, and then another bit describes whether the number of the candidate uplink subframes is 2 or 1.

Scheme 2, redefined and described using bits of DAI in DCI in existing (E) PDCCH. The specific design is the same as the UL index described above, and the description thereof is omitted.

In scheme 3, the base station uses bits in the DCI 1C to describe the time interval information, transmits in the PDCCH common search space of the subframe, and fixedly uses the first 4 or 8 CCEs. For example, in DCI information describing a symbol occupied by a last downlink subframe, information describing the time interval and/or the number of candidate uplink subframes are added, where the DCI including the information of the time interval may be transmitted in each downlink subframe or in the last 2 downlink subframes.

Since the number of the candidate uplink subframes exceeds 1, it means that the base station side needs to blindly detect in which uplink subframe the UE finally transmits uplink data, and thus obviously increases the complexity of the base station. A complementary approach is added below to reduce the complexity of base station detection.

The base station and the UE agree on a data starting symbol position, or the base station configures the starting symbol position of data, so that the starting symbol for transmitting uplink data at the UE side is fixed, and the failure of blind data detection of the base station caused by too many data starting symbols due to the fact that the UE performs CCA detection is avoided.

It should be noted that the above-mentioned means may be used in combination or alone.

The above-described approach may also be used for subframe (set) indication when the UE sends ACK/NACK. The present application is not repeated for the transmission of ACK/NACK.

For better UE operation supporting different time intervals, the following ways are provided:

the UE reports the time interval capability information supported by the UE to the base station, and the base station can configure the time interval of the uplink subframe data transmission of the UE according to the capability of different time intervals of the UE.

When the UE reports the time interval capability information supported by the UE in one of the following 2 cases:

UE accessing network

2, when UE receives the unauthorized carrier wave configured by base station

And when reporting, sending the time interval information to the base station by adopting a UE special RRC message.

The reason for configuring a plurality of candidate uplink subframes for the UE is to improve the probability that the UE performs CCA detection successfully, and according to the same idea, for a plurality of following individual uplink subframes scheduled continuously, a method for the UE side to perform CCA is suggested as follows:

when a base station transmits uplink grant information scheduling UE in a plurality of consecutive downlink subframes, for example, the base station transmits uplink grant information for subframes n +4, n +5, and n +6 on subframes n, n +1, and n +2, after the UE performs CCA successfully before a certain subframe and transmits data, the UE directly transmits data in the remaining subframes, for example, after the UE performs CCA successfully before subframe n +4 and transmits data in subframe n +4, the UE does not perform CCA in subframes n +5 and n +6, and directly transmits data. Or the UE performs CCA successfully before subframe n +5 (CCA failed before n + 4), and after transmitting data in subframe n +4, the UE does not perform CCA and directly transmits data in subframe n + 6.

Therefore, the number of CCA execution times of the UE can be reduced, and the success rate of uplink scheduling is improved.

The following provides a method for notifying the UE that the base station occupies the subframe information occupied by the unlicensed carrier.

When the base station configures an unlicensed carrier for the UE and schedules the UE to perform uplink data transmission in the unlicensed carrier in a cross-carrier manner, the base station should notify the UE of the number of subframes planned to be occupied in the unlicensed carrier (i.e., subframes in which the UE transmits uplink data), where the base station notifies the UE through a PDCCH common search space of the primary carrier, for example, using DCI 1C. E.g., to inform the unlicensed carriers that those subframes will be uplink subframes. The specific signaling may be: the base station takes the subframe of the uplink authorization information in the non-authorized carrier sent by the main carrier as a starting point, and the number of continuous UL subframes after the time interval. The starting point of the uplink subframe scheduled to be occupied in the scheduled description unlicensed carrier is as follows: a subframe for sending uplink authorization information in an unauthorized carrier in a main carrier plus a corresponding subframe after a time interval; number of uplink subframes planned to occupy: and continuously planning the number of occupied subframes from the starting point.

The time interval may be predetermined, for example, 4 subframes.

The following provides a design of the CCA execution position and UL data start position before UL data transmission. The design can effectively solve the problem that when the last downlink subframe is a partial subframe, the design of the starting position of the UL data and the design of the corresponding UL CCA position (the undeclared parts are all executed according to the description of the LTE system).

In one burst transmission, the last subframe may occupy the first 3, 6, 9, 10, 11, 12, or 14 symbols of a continuous downlink subframe occupied by a base station, and for the first 6 cases, the last downlink subframe is a partial subframe and there is an unused OFDM symbol. The following subframes are UL subframes.

For this case, the base station and the UE agree to perform data transmission and UL CCA location design in the following manner.

The starting position of UE uplink data (PUSCH/PUCCH) is allowed to start from symbol 0 or symbol 7. The previous symbol of the UE uplink data start symbol is the position where the UL CCA is performed. This is especially the case:

when the subframe n is the last downlink subframe and the occupied symbols are the first 3 and 6, the uplink data of the UE is allowed to be transmitted from the symbol 7 of the subframe. The UE performs CCA detection in symbol 6 of subframe n and when the channel is found to be clear, the UE allows data to be transmitted starting at symbol 7. When the base station configures the last downlink subframe n as a partial subframe and occupies the first 3 and 6 symbols, the base station sends uplink authorization information in a subframe n-4, at this time, the scheduled UE performs CCA detection in the symbol 6 in the subframe n, and if the CCA detection finds that the channel is idle, the base station starts sending uplink data in the symbol 7. The base station also starts receiving uplink data lasting 7 symbols at symbol 7 of subframe n.

When the subframe n is the last downlink subframe and the occupied symbols are the first 9, 10, 11 and 12, the uplink data of the UE is allowed to be transmitted from the symbol 0 of the subframe n + 1. The UE performs CCA detection in subframe n symbols 13 and/or 14, and when the channel is found to be clear, the UE allows data to be transmitted starting at symbol 0. When the base station configures the last downlink subframe n as a partial subframe and occupies the first 9, 10, 11, and 12 symbols, the base station transmits uplink grant information in a subframe n-3, at this time, the scheduled UE performs CCA detection in a symbol 13 and/or 14 in the subframe n, and if the CCA detection finds that the channel is idle, starts to transmit uplink data in a symbol 0 of a subframe n + 1. The base station also receives uplink data lasting 14 symbols starting at symbol 0 of subframe n + 1.

When the subframe n is the last downlink subframe and the occupied symbols are the first 14, the uplink data of the UE is allowed to be transmitted from the symbol 0 of the subframe n + 1. The UE performs CCA detection in symbol 14 of subframe n and when the channel is found to be clear, the UE allows data to be transmitted starting at symbol 0. When the base station configures the last downlink subframe n as a complete subframe, the base station sends uplink authorization information in a subframe n-3, at this time, scheduled UEs perform CCA detection in a symbol 14 in the subframe n, and if the CCA detection finds that a channel is idle, uplink data starts to be sent in a symbol 0 of a subframe n + 1. The base station also receives uplink data lasting 14 symbols starting at symbol 0 of subframe n + 1. The CCA detection performed by the UE in symbol 14 in subframe n at this time is CCA pattern detection (i.e., CCA detection is performed in the agreed RE).

The embodiment of the invention also provides a storage medium. Alternatively, in the present embodiment, the storage medium may be configured to store program codes for performing the following steps:

s11, the network side configures uplink subframe position information and/or time interval information, wherein the uplink subframe position information is used for indicating candidate uplink subframes for transmitting uplink data corresponding to the uplink authorization information, and the time interval information is used for indicating a time interval between the transmission of the uplink authorization information and the transmission of the uplink data;

s12, the network side sends the uplink subframe position information and/or time interval information to the user equipment UE;

s13, the network side receives uplink data sent by the UE on a subframe corresponding to the uplink subframe location information and/or the time interval information.

And the number of the first and second groups,

s21: the method comprises the steps that User Equipment (UE) receives uplink subframe position information and/or time interval information which are configured and sent by a network side, wherein the uplink subframe position information is used for indicating candidate uplink subframes for sending uplink data corresponding to uplink authorization information, and the time interval information is used for indicating a time interval between the sending of the uplink authorization information and the sending of the uplink data;

S22: and the UE transmits the uplink data to the network side on the subframe corresponding to the uplink subframe position information and/or the time interval information.

Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.

It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method of data transmission, comprising:

the method comprises the steps that a network side configures uplink subframe position information, or the network side configures the uplink subframe position information and time interval information, wherein the uplink subframe position information is used for indicating candidate uplink subframes for sending uplink data corresponding to uplink authorization information, and the time interval information is used for indicating a time interval between sending the uplink authorization information and sending the uplink data;

the network side sends the uplink subframe position information to User Equipment (UE), or the network side sends the uplink subframe position information and the time interval information to the UE;

and the network side determines the candidate uplink subframes for the UE to send the uplink data and receive the uplink data according to the uplink subframe position information or the uplink subframe position information and the time interval information, wherein the candidate uplink subframes comprise 2 or more than 2 uplink subframes, and the UE determines one candidate uplink subframe from the candidate uplink subframes to send the uplink data.

2. The method according to claim 1, wherein the network side configures the uplink subframe location information, or configures the uplink subframe location information and the time interval information, by at least one of:

the network side configures the uplink subframe position information for the UE through a special RRC message of User Equipment (UE) or a system broadcast RRC message, or configures the uplink subframe position information and the time interval information;

the network side configures the position information of the uplink subframe through physical layer signaling, or configures the position information of the uplink subframe and the time interval information through physical layer signaling;

the network side configures the position information of the uplink subframe in a mode of combining high-level signaling and physical layer signaling, or configures the position information of the uplink subframe and the time interval information;

the network side dynamically modifies the uplink subframe position information agreed with the UE in advance, or dynamically modifies the uplink subframe position information agreed with the UE in advance and the time interval information;

and the network side configures the unified uplink subframe position information according to a cell or a carrier as a unit, or configures the unified uplink subframe position information and the time interval information.

3. The method according to claim 2, wherein the network side broadcasts uplink subframe location information configured by RRC messages through UE-specific RRC messages or system broadcast RRC messages, or wherein configuring the uplink subframe location information and the time interval information comprises:

the network side adds the uplink subframe position information in a UE dedicated RRC message, or adds the uplink subframe position information and the time interval information; or,

and the network side adds the uplink subframe position information or adds the uplink subframe position information and the time interval information in a specified system information block of a system broadcast RRC message.

4. The method of claim 2, wherein the network side configures the uplink subframe location information in a manner of combining higher layer signaling and physical layer signaling, or wherein configuring the uplink subframe location information and the time interval information comprises:

the network side configures the time interval set and the uplink subframe set through high-level signaling, or the network side configures the uplink subframe set through high-level signaling;

and the network side indicates the uplink subframe position information of the uplink data corresponding to the uplink authorization information currently from the uplink subframe set through physical layer signaling, or indicates the time interval information and the uplink subframe position information of the uplink data corresponding to the uplink authorization information currently from the time interval set and the uplink subframe set through physical layer signaling.

5. The method of claim 2, wherein the network side configures the uplink subframe location information in a manner of combining higher layer signaling and physical layer signaling, or wherein configuring the uplink subframe location information and the time interval information comprises:

the network side configures the position information of the uplink subframe through a high-level signaling and configures the time interval information through a physical layer signaling; or,

and the network side configures the time interval information through high-level signaling and configures the position information of the uplink subframe through physical-layer signaling.

6. The method of claim 2, wherein the network side configures the uplink subframe location information in a manner of combining higher layer signaling and physical layer signaling, or wherein configuring the uplink subframe location information and the time interval information comprises:

and when the network side configures the uplink subframe position information through high-layer signaling and physical layer signaling at the same time, or configures the time interval information and the uplink subframe information, the network side and the UE agree that the UE receives the uplink subframe position information, or the time interval information and the uplink subframe information are subject to physical layer signaling notification.

7. The method of claim 2, wherein the network side configures the uplink subframe location information through physical layer signaling, or wherein configuring the uplink subframe location information and the time interval information comprises:

and the network side configures the position information of the uplink subframe by using a bit in Downlink Control Information (DCI) in a Physical Downlink Control Channel (PDCCH), or configures the position information of the uplink subframe and the time interval information by physical layer signaling.

8. The method according to claim 2, wherein the network side configures the unified uplink subframe location information according to a cell or a carrier, or the configuring the unified uplink subframe location information and the time interval information comprises:

and the network side forwards the uplink subframe position information in other carriers or cells under the network side through a specified carrier, or forwards the uplink subframe position information and the time interval information in other carriers or cells under the network side.

9. The method of claim 2, wherein when the uplink subframe location information or the uplink subframe location information and the time interval information are carried by a physical downlink control channel,

the network side configures the uplink subframe position information through Downlink Control Information (DCI), or configures the uplink subframe position information and the time interval information; or,

the network side and the UE re-agree a bit of a Downlink Assignment Index (DAI) in Downlink Control Information (DCI), wherein the bit is used for indicating that the bit is used as the uplink subframe position information in an unlicensed carrier, or used as the uplink subframe position information and the time interval information; or,

and the network side and the UE re-agree with a bit of an uplink indication ULindex in downlink control information DCI, wherein the bit is used for indicating that the bit is used as the uplink subframe position information in an unlicensed carrier, or used as the uplink subframe position information and the time interval information.

10. The method of claim 9,

when the network side configures the time interval information and the uplink subframe position information at the same time, and the time interval information and the uplink subframe position information are both 2 types, the network side configures the time interval by using a 1 st bit in a Downlink Assignment Index (DAI) in Downlink Control Information (DCI), and the 2 nd bit indicates the uplink subframe position information; or,

the network side configuration uses the 1 st bit in the uplink indication UL index in the downlink control information DCI to indicate the time interval location information, and the 2 nd bit indicates the uplink subframe location information.

11. A method of data transmission, comprising:

user Equipment (UE) receives uplink subframe position information configured by a network side, or the configured uplink subframe position information and time interval information, wherein the uplink subframe position information is used for indicating candidate uplink subframes for transmitting uplink data corresponding to uplink authorization information, and the time interval information is used for indicating a time interval between the transmission of the uplink authorization information and the transmission of the uplink data;

the UE transmits the uplink data to the network side on subframes corresponding to the uplink subframe position information or the uplink subframes corresponding to the uplink subframe position information and the time interval information, wherein the candidate uplink subframes comprise 2 or more than 2 uplink subframes, and the UE determines one candidate uplink subframe from the candidate uplink subframes to transmit the uplink data.

12. The method according to claim 11, wherein a user equipment UE receives uplink subframe location information configured by a network side, or wherein the configured uplink subframe location information and the configured time interval information include:

and the UE receives the position information of the uplink subframe through a high-level signaling and/or a physical layer signaling, or receives the position information of the uplink subframe and the time interval information.

13. The method of claim 12,

when the UE receives the uplink subframe position information configured by a high-layer signaling and a physical layer signaling at the same time, or receives the uplink subframe position information and the time interval information, the UE receives the uplink subframe position information in advance with the network side, or receives the uplink subframe position information and the time interval information, wherein the appointed indication is based on the uplink subframe position information configured by the physical layer signaling, or the configured uplink subframe position information and the time interval information.

14. A data transmission device is applied to a network side, and is characterized by comprising:

a configuration module, configured to configure uplink subframe location information and/or configure uplink subframe location information and time interval information on a network side, where the uplink subframe location information is used to indicate a candidate uplink subframe for transmitting uplink data corresponding to uplink grant information, and the time interval information is used to indicate a time interval between transmitting the uplink grant information and transmitting the uplink data;

a first sending module, configured to send the uplink subframe location information to a user equipment UE, or send the uplink subframe location information and the time interval information to the UE;

a first receiving module, configured to determine, according to the uplink subframe location information or according to the uplink subframe location information and the time interval information, the candidate uplink subframes for the UE to send the uplink data, and receive the uplink data, where the candidate uplink subframes include 2 or more uplink subframes, and the UE determines a candidate uplink subframe from the candidate uplink subframes to send the uplink data.

15. A data transmission device is applied to a User Equipment (UE) side, and is characterized by comprising:

a second receiving module, configured to receive uplink subframe location information configured by a network side, or the configured uplink subframe location information and time interval information, where the uplink subframe location information is used to indicate a candidate uplink subframe for transmitting uplink data corresponding to uplink grant information, and the time interval information is used to indicate a time interval between transmitting the uplink grant information and transmitting the uplink data;

a second sending module, configured to send the uplink data to the network side on a subframe corresponding to the uplink subframe location information or the subframe corresponding to the uplink subframe location information and the time interval information, where the candidate uplink subframes include 2 or more uplink subframes, and the UE determines one candidate uplink subframe from the candidate uplink subframes to send the uplink data.