WO2017049727A1

WO2017049727A1 - Data transmission method and apparatus based on uplink multiplexing

Info

Publication number: WO2017049727A1
Application number: PCT/CN2015/093507
Authority: WO
Inventors: 朱亚军; 李明菊; 张云飞
Original assignee: 宇龙计算机通信科技(深圳)有限公司
Priority date: 2015-09-25
Filing date: 2015-10-31
Publication date: 2017-03-30
Also published as: CN105338640A; CN105338640B

Abstract

Disclosed is a data transmission method based on uplink multiplexing. The method comprises: detecting whether an uplink transmission channel is occupied (S102); when it is detected that the uplink transmission channel is not occupied, generating preset occupation data (S104); acquiring an uploading timeslot allocated by a base station, and before a first uploading timeslot arrives after it is detected that the uplink transmission channel is not occupied, sending the occupation data through the uplink transmission channel (S106); and when the first uploading timeslot arrives after it is detected that the uplink transmission channel is not occupied, performing service data transmission through the uplink transmission channel (S108). Also disclosed is a data transmission apparatus based on uplink multiplexing. By using the data transmission method and apparatus based on uplink multiplexing in the present invention, the resource utilization rate of channel resources can be improved.

Description

Data transmission method and device based on uplink multiplexing

Technical field

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

Background technique

With the rapid development of the mobile service, the capacity of the existing wireless spectrum allocated to the mobile service has been unable to meet the requirements. In the 3GPP Rel-13 phase, a mechanism called LAA (licensed-assisted access) was introduced. In the LAA mechanism, the transmission of mobile communication can be carried on an unlicensed spectrum, such as the 5 GHz band. On these unlicensed spectrums, currently mainly WiFi, Bluetooth, radar, medical and other systems are in use.

Due to the diversity and complexity of the system on the unlicensed spectrum, the direct use of the LTE mechanism on the unlicensed spectrum cannot guarantee the security of the user and the stability of the connection. Therefore, in the LAA mechanism, the licensed spectrum is used to assist in access on the unlicensed spectrum.

In the LAA system, in order to ensure fair sharing of unlicensed spectrum with other systems. A mechanism for listening before (listen before talk) was introduced. That is to say, before sending data, the sender needs to detect whether the channel is idle. It is only possible to send data when the channel is idle. The use of the LBT mechanism is roughly divided into two methods, one is FBE (Frame-Based Equipment), and the other is LBE (Load-Based Equipment). In the case of FBE, different senders can detect the channel at a relatively fixed time, thereby increasing the chance of multiplexing; however, the chance of occupying the spectrum may be less; the LBE can be driven by the service to detect the channel at any time. The opportunity of channel occupation is improved, but there is no guarantee that the transmitting end will occupy the channel at the same time, because multiplexing of different transmitting ends cannot be guaranteed. Therefore, in the LAA system in the conventional technology, when the terminal transmits data in the uplink, the chance of occupying the channel is small, so that the utilization of the channel resource is insufficient.

Summary of the invention

Based on this, in order to solve the LAA system in the above-mentioned conventional technology, the number of uplink transmissions of the terminal According to the technical problem of occupying channels less and making the utilization of channel resources insufficient, a data transmission method based on uplink multiplexing is proposed.

A data transmission method based on uplink multiplexing, comprising:

Detecting whether the uplink transmission channel is occupied;

Generating preset occupation data when detecting that the uplink transmission channel is not occupied;

Acquiring an uplink time slot allocated by the base station, and sending the occupied data by using the uplink transmission channel before detecting that the first uplink time slot after the uplink transmission channel is not occupied arrives;

After detecting that the first uplink time slot after the uplink transmission channel is not occupied, the service data transmission is performed through the uplink transmission channel.

In one embodiment, the step of detecting whether the uplink transmission channel is occupied further includes:

Receiving, by the base station, a preset signal feature corresponding to the cell to which the cell belongs;

The step of generating preset occupation data further includes:

And generating occupation data according to the received signal feature corresponding to the cell to which the cell belongs.

In one of the embodiments, the step of receiving the preset signal feature corresponding to the cell to which the base station delivers is:

Receiving RRC signaling, MAC CE or physical layer signaling sent by the base station on the licensed spectrum or the unlicensed spectrum, and parsing the signal characteristics corresponding to the belonging cell.

Offset data in the uplink transport channel according to a preset signal feature corresponding to the cell to which the base station delivers.

In an embodiment, the step of detecting whether the uplink transmission channel is occupied further includes:

When it is detected that the uplink transmission channel is occupied, the uplink transmission channel is abandoned and the detection is continued.

In one of the embodiments, the step of acquiring an upload time slot allocated by the base station is:

Receiving radio resource control RRC signaling, MAC CE or physical layer signaling of the base station on the licensed spectrum or the unlicensed spectrum, and parsing the uplink time slot allocated by the base station.

In addition, in order to solve the above-mentioned conventional LAA system, when the terminal transmits data in the uplink, the chance of occupying the channel is small, and the utilization of the channel resource is insufficient, a method based on uplink multiplexing is proposed. Data transmission device.

A data transmission device based on uplink multiplexing, comprising:

a channel occupancy detecting module, configured to detect whether an uplink transmission channel is occupied;

An occupation data generating module, configured to generate preset occupation data when detecting that the uplink transmission channel is not occupied;

An uplink transmission channel occupant module, configured to acquire an uplink time slot allocated by the base station, and send the occupied space by using the uplink transmission channel before detecting that the first uplink time slot after the uplink transmission channel is not occupied arrives data;

And an uplink transmission module, configured to perform service data transmission by using the uplink transmission channel when detecting that the first uplink time slot after the uplink transmission channel is not occupied arrives.

In one embodiment, the apparatus further includes a signal feature receiving module, configured to receive a preset signal feature corresponding to the cell to which the base station delivers;

The occupancy data generating module is further configured to generate occupancy data according to the received signal feature corresponding to the cell to which the cell belongs.

In one embodiment, the signal feature receiving module is configured to receive RRC signaling, MAC CE, or physical layer signaling sent by the base station on the licensed spectrum or the unlicensed spectrum, and parse the signal characteristics corresponding to the cell to which the cell belongs. In one embodiment, the apparatus further includes a channel data cancellation module, configured to cancel data in the uplink transmission channel according to a preset signal feature corresponding to the cell to which the base station delivers.

In one of the embodiments, the channel occupancy detecting module is further configured to, when detecting that the uplink transmission channel is occupied, abandon the occupation of the uplink transmission channel, and continue to detect the channel.

In an embodiment, the uplink transmission channel occupation module is further configured to receive radio resource control RRC, MAC CE signaling, or physical layer signaling of the base station on the licensed spectrum or the unlicensed spectrum, and parse the base station. The assigned upload slot.

Implementation of the embodiments of the present invention will have the following beneficial effects:

In the foregoing apparatus for transmitting data based on the uplink multiplexing, the terminal in the same cell can prevent the terminal of another cell from occupying the channel resource transmission data allocated by the base station of the cell by transmitting the occupied data corresponding to the cell (due to other The terminal of the cell is not the service object of the base station of the cell, even if the upload is discarded, thereby becoming an interference signal, and the terminal of the same cell can also determine the uplink transmission channel of the unlicensed spectrum by canceling the occupied data with each other. It is not occupied, so that the channel resources of the base station can be multiplexed when the uplink time slot allocated by the base station of the cell arrives, thereby improving resource utilization.

DRAWINGS

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

among them:

1 is a networking diagram of an LAA system in an embodiment;

2 is a flow chart of a data transmission method based on uplink multiplexing in an embodiment;

3 is a schematic diagram of a subframe slot of an OFDM system in an embodiment;

4 is a schematic diagram of a process in which multiple terminals compete for time slot resources in an embodiment;

FIG. 5 is a schematic diagram of a data transmission apparatus based on uplink multiplexing in one embodiment.

detailed description

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

In the conventional technology, taking the deployment scenario in FIG. 1 as an example, an example in which two LAA cells (LAA base station 1 and LAA base station 2) coexist with a WiFi system is considered, wherein the user served by the LAA base station 1 It is the terminals 1 and 2; the terminal served by the LAA base station 2 is the terminal 3; the terminal served by the WiFi AP is the terminal 4. These three cells can work on the same channel and need to compete to use channel resources. If the channel resources are allocated in the traditional way of competing for channel resources in the technology, the success rate of the LBT is low due to interference between the terminals, and it is difficult to compete for channel resources, thereby causing insufficient resource utilization.

Therefore, in the LAA system in the above-mentioned conventional technology, when the terminal transmits data in the uplink, the chance of occupying the channel is small, and the technical problem of insufficient utilization of the channel resources is solved. In this embodiment, a A data transmission method based on uplink multiplexing, which may be implemented by a mobile terminal supporting the LAA system.

Specifically, as shown in FIG. 2, the method includes:

Step S102: When the preset detection time slot arrives, it is detected whether the uplink transmission channel is occupied.

In the LAA system, the terminal can detect whether the uplink transmission channel that uploads data to the base station is occupied when the preset detection time slot arrives, and the terminal uses the LBT mechanism to detect whether the uplink transmission channel is occupied, and can be detected by using FBE or LBE. Whether other terminals in the uplink transmission channel are uploading data to the base station. In the FBE mode, the terminal can periodically detect whether the uplink transmission channel is occupied by the LBT mechanism, and the preset detection time slot is a plurality of time slot intervals that arrive periodically, and each time periodically arrives at the detection time slot. At the time of the moment, the above process of detecting whether the uplink transmission channel is occupied may be performed. In the LBE mode, according to the service requirement, when the detection time slot defined by the upper layer service arrives, the process of detecting whether the uplink transmission channel is occupied is performed.

As shown in FIG. 3, FIG. 3 shows an Orthogonal Frequency Division Multiplexing (OFDM) system, that is, a frame structure in data transmission, and the data transmitted by the terminal to the base station is a structure of multiple subframes. Each subframe contains a slot resource. Each subframe contains a plurality of OFDM symbols, and each OFDM symbol corresponds to a corresponding slot resource. In the LAA system, the terminal may detect whether the uplink transmission channel is occupied when the terminal arrives at a time corresponding to a time slot of an OFDM symbol of a certain OFDM subframe, and the time slot is a preset detection time slot.

In this embodiment, it is possible to detect whether the uplink transmission channel is occupied by a Clear Channel Assessment (CCA). In a wireless communication system, when a device needs to transmit data on a certain channel, it first receives on the channel. If a device does not find that another device transmits data on the channel after a given time, it determines that the channel is idle. If found to have it When his device is sending data, he will retry the process again after escaping for a while. The method can effectively avoid collisions on the wireless channel, also called Carrier Sense Multiple Access with Conflict Avoidance (CSMA/CA).

Step S104: Generate preset occupation data when it is detected that the uplink transmission channel is not occupied.

Step S106: Acquire an uplink time slot allocated by the base station, and send the occupied data through the uplink transmission channel before detecting that the first uplink time slot after the uplink transmission channel is not occupied.

In this embodiment, the base station may allocate time slot resources on the unlicensed spectrum to the plurality of terminals served by the base station according to the idle condition of the channel resource, so that the terminal can upload to the terminal through the unlicensed spectrum when the corresponding time slot resource arrives. data. As shown in FIG. 3, the base station can notify the symbol 4 and symbol 11 of the terminal subframe N as the upload time at the time of the subframe N-4 (the channel resources of the base station may be used for other services such as downlink data transmission). The starting time position of the data, the base station may send RRC signaling, MAC CE or physical layer signaling (either broadcast or separate transmission) to all terminals on the channel, the terminal, on the licensed spectrum or the unlicensed spectrum. Receiving radio resource control RRC signaling, MAC CE or physical layer signaling of the transmission of the base station on the licensed spectrum or the unlicensed spectrum, and parsing the uplink time slot allocated by the base station, that is, symbol 4 and symbol 11 of the subframe N Gap.

If the base station transmitting the allocation of the uplink time slot is the base station 1 in FIG. 1, as described above, since the LAA base station 1, the LAA base station 2, and the wifi three cells operate on the same channel in the LAA system, The terminal 1, the terminal 2, the terminal 3, and the terminal 4 need to compete for the use of the channel. If the resource competition is performed according to the conventional technology, the competition behavior of the terminal 3 and the terminal 4 interferes with the terminal 1 and the terminal 2.

In this embodiment, to avoid the above interference, as shown in FIG. 3, if the terminal 1 performs the LBT by using the symbol8 slot of the subframe N as the detection slot, and passes the CAA check, it can determine that the channel is in the subframe. The slot position of symbol 8 of N is idle. At this time, terminal 1 can continuously transmit the occupied data using the uplink transmission channel at the slot position of symbol 9 of subframe N. For the terminal 3, if the terminal 3 performs LBT in the symbol9 position of the subframe N to detect whether the uplink transmission channel is occupied, since the uplink transmission channel has been occupied by the occupied data sent by the terminal 1, the terminal 3 cannot Through the CAA check, it will always be determined that the uplink transport channel is in an occupied state.

Step S108: When it is detected that the first uplink time slot after the uplink transmission channel is not occupied, the service data transmission is performed by using the uplink transmission channel.

In the above example, when the detection time slot arrives, the terminal 1 detects that the uplink transmission channel is idle, and continuously transmits the occupied data through the uplink transmission channel, that is, continuously transmits the occupied data in the slot positions of symbol 9 and symbol 10 of the subframe N. Therefore, the device of the other cell such as the terminal 3 determines that the upload transport channel is occupied, and therefore does not use the upload transport channel to send data to the base station. However, when the symbol11 time slot of the subframe N arrives, since the time slot is the starting position of the uplink transmission data pre-allocated by the base station, the terminal 1 ends transmitting the occupied data, and then transmits the service data to be transmitted to the base station, thereby Complete the upload of the data. For the terminal 3, since the uplink transmission channel that is continuously detected is in an occupied state, the terminal 3 does not use the uplink transmission channel to transmit data, and therefore does not interfere with the uploading behavior of the terminal 1.

In this embodiment, in order to enable the terminal of the same cell to multiplex the uplink transmission channel in the same time slot resource of the unlicensed spectrum, the terminal may also receive the uplink transmission channel before the step of detecting whether the uplink transmission channel is occupied. Predetermined signal characteristics corresponding to the cell to which the cell belongs, the signal feature being predefined or known by the receiving base station to transmit RRC signaling, MAC CE or physical layer signaling on the licensed spectrum or the unlicensed spectrum;

The step of generating the preset occupation data by the terminal may be specifically: generating the occupation data according to the received signal feature corresponding to the cell.

Further, before the step of detecting whether the uplink transmission channel is occupied, the terminal may further cancel the data in the uplink transmission channel according to a preset signal feature corresponding to the cell to which the base station sends the signal.

That is to say, as shown in FIG. 1, the LAA base station 1 can transmit the signal characteristics corresponding to the LAA base station 1 to the terminal 1 and the terminal 2 in advance through RRC signaling or physical signaling (LAA base station 1 is terminal 1 and terminal 2) The cell base station to which it belongs, for example, the cell identity of the LAA base station 1; the LAA base station 2 can transmit the signal feature corresponding to the LAA base station 2 to the terminal 3 by RRC signaling or physical signaling in advance (LAA base station 2 is the cell to which the terminal 3 belongs) Base station), such as the cell identity of the LAA base station 2.

When the terminal 1 performs the foregoing method and detects that the uplink transmission channel of the unlicensed spectrum is not occupied, the cell identifier of the LAA base station 1 is uploaded as the occupied data by using the uplink transmission channel; the terminal 2 performs the foregoing method to detect the unlicensed spectrum. If the uplink transmission channel is occupied, the occupied area data in the uplink transmission channel may be cancelled by using the cell identifier of the LAA base station 1. If the cancellation is successful, the uplink transmission channel of the unlicensed spectrum is also determined to be unoccupied. Selected, you can continue to perform the above Step S104: Send the cell identifier of the LAA base station 1 by using the uplink transmission channel of the unlicensed spectrum.

For the terminal 3, since the cell identity of the LAA base station 1 on the uplink transmission channel of the unlicensed spectrum is unsuccessful through the cell identity of the LAA base station 2, the LAA base station 1 on the uplink transmission channel of the unlicensed spectrum The cell identifier is the transmission data on the uplink transmission channel of the unlicensed spectrum for the terminal 3, and the terminal 3 occupies the uplink transmission channel. At this time, the terminal 3 can abandon the occupation of the uplink transmission channel and continue to perform detection.

Specifically, as shown in FIG. 4, the base station 1 broadcasts symbol4 and symbol1 of the subframe N as an upload slot through the licensed spectrum or the unlicensed spectrum, the detection slot of the terminal 1 is symbol6, and the detection slot of the terminal 2 is symbol8. The detection time slot of the terminal 3 is symbol8. Therefore, when the symbol4 time slot of the subframe N arrives, since the terminal 1, the terminal 2, and the terminal 3 do not start to perform LBT to detect the uplink transmission channel, therefore, in the subframe N In the symbol4 time slot, no terminal occupies the uplink transmission channel to upload data to the base station. When the time reaches the symbol6 time slot of the subframe N, the terminal 1 starts detecting the LBT to detect the uplink transmission channel of the unlicensed spectrum, and if the CAA check is passed, determining that the uplink transmission channel of the unlicensed spectrum is not It is occupied, and the cell identifier of the LAA base station 1 is transmitted using the uplink transmission channel of the unlicensed spectrum in the symbol 7 slot of the subframe N.

When the time reaches the symbol8 time slot of the subframe N, the terminal 2 starts to perform the LBT to detect the uplink transmission channel of the unlicensed spectrum, and first uses the cell identifier of the LAA base station 1 to cancel the uplink transmission channel of the unlicensed spectrum. Since the terminal 1 continuously transmits the cell identity of the LAA base station 1 using the uplink transmission channel of the unlicensed spectrum starting from the symbol 7 slot of the subframe N, the data received by the terminal 2 through the uplink transmission channel of the unlicensed spectrum is cancelled. Therefore, the CA2 can also start to use the uplink transmission channel of the unlicensed spectrum to transmit the cell identifier of the LAA base station 1, that is, the uplink transmission channel of the unlicensed spectrum is started in the symbol9 slot of the subframe N. The cell identity of the LAA base station 1 is transmitted.

Similarly, when the time reaches the symbol8 time slot of the subframe N, the terminal 3 also starts to perform the LBT to detect the uplink transmission channel of the unlicensed spectrum, and first uses the cell identifier of the LAA base station 2 to uplink the transmission channel of the unlicensed spectrum. To perform the cancellation, since the terminal 1 and the terminal 2 continue to use the uplink transmission channel of the unlicensed spectrum to transmit the cell identity of the LAA base station 1 at the beginning of the symbol 7 slot of the subframe N, the terminal 2 passes the uplink transmission channel of the unlicensed spectrum. The received cell identifier of the LAA base station 1 cannot be cancelled by the cell identifier of the LAA base station 2, so that the terminal 3 cannot pass the CAA check, thereby It is determined that the uplink transmission channel of the unlicensed spectrum is occupied, and at this time, the terminal 3 can abandon the occupation of the uplink transmission channel and continue to perform detection.

When the time arrives at the symbol11 time slot of the subframe N, since the time slot is the uplink time slot allocated by the base station 1, the terminal 1 and the terminal 2 both transmit data to the base station by using the uplink transmission channel of the unlicensed spectrum at this time.

It can be seen from the above process that the terminal 1 or the terminal 2 in the same cell can prevent the terminal of other cells from occupying the channel resource transmission data allocated by the base station of the cell by transmitting the occupied data corresponding to the cell (due to the terminal of other cells) The service object of the base station that is not the cell, even if the upload is discarded, becomes an interference signal, and the terminal 1 or the terminal 2 of the same cell can also determine the uplink transmission channel of the unlicensed spectrum by canceling the occupied data with each other. It is unoccupied, so that the channel resources of the base station can be multiplexed when the uplink time slot allocated by the base station of the cell arrives, thereby improving resource utilization.

It should be noted that, in the execution of the foregoing method, the method may be performed by the same terminal. In the foregoing example, in an LAA system, a terminal may be sent as an uplink transmission channel of an unlicensed spectrum as the identity of the terminal 1 in the above example. Occupancy data may also be used as the identity of the terminal 2 in the above example, and cancel the uplink transmission channel of the unlicensed spectrum according to the signal characteristics corresponding to the cell, and cancel the success; or may be the identity of the terminal 3 in the above example, according to The signal characteristics corresponding to the associated cell cancel the uplink transmission channel of the unlicensed spectrum, and cancel the failure.

In addition, in order to solve the above-mentioned conventional LAA system, the terminal has less opportunity to occupy the channel when transmitting data in the uplink, so that the utilization problem of the channel resource is insufficient. In one embodiment, as shown in FIG. 5 As shown, a data transmission apparatus based on uplink multiplexing is proposed. The apparatus includes a channel occupancy detection module 102, an occupied data generation module 104, an uplink transmission channel occupation module 106, and an uplink transmission module 108, where:

The channel occupancy detecting module 102 is configured to detect whether the uplink transmission channel is occupied.

The occupancy data generating module 104 is configured to generate preset occupation data when detecting that the uplink transmission channel is not occupied.

The uplink transmission channel occupation module 106 is configured to acquire an uplink time slot allocated by the base station, and send the occupied data by using the uplink transmission channel before detecting that the first uplink time slot after the channel is not occupied.

The uplink transmission module 108 is configured to perform service data transmission on the uplink transmission channel when the first uplink time slot after the detection time slot arrives.

In this embodiment, as shown in FIG. 5, the device further includes a signal feature receiving module 110, configured to receive a preset signal feature corresponding to the cell to which the base station delivers.

The occupancy data generating module 104 is further configured to generate occupancy data according to the received signal feature corresponding to the cell to which the cell belongs.

In this embodiment, the preset signal characteristics corresponding to the cell to which the base station receives the signal received by the signal feature receiving module 110 are predefined or transmitted by the receiving base station on the licensed spectrum or the unlicensed spectrum. CE or physical layer signaling is known.

In this embodiment, as shown in FIG. 5, the device further includes a channel data cancellation module 112, configured to perform data on the uplink transmission channel according to a preset signal feature corresponding to the cell to which the base station is delivered. offset.

In this embodiment, the channel occupancy detecting module 102 is further configured to, when detecting that the uplink transmission channel is occupied, abandon the occupation of the uplink transmission channel, and continue to detect the channel.

In this embodiment, the uplink transmission channel occupation module 106 is further configured to receive radio resource control RRC, MAC CE signaling, or physical layer signaling of the base station to transmit on the licensed spectrum or the unlicensed spectrum, and parse the allocation of the base station. Upload time slot.

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

Claims

A data transmission method based on uplink multiplexing, comprising:

Detecting whether the uplink transmission channel is occupied;

Generating preset occupation data when detecting that the uplink transmission channel is not occupied;

Acquiring an uplink time slot allocated by the base station, and sending the occupied data by using the uplink transmission channel before detecting that the first uplink time slot after the uplink transmission channel is not occupied arrives;

After detecting that the first uplink time slot after the uplink transmission channel is not occupied, the service data transmission is performed through the uplink transmission channel.
The uplink multiplexing-based data transmission method according to claim 1, wherein the step of detecting whether the uplink transmission channel is occupied further comprises:

Receiving, by the base station, a preset signal feature corresponding to the cell to which the cell belongs;

The step of generating preset occupation data further includes:

And generating occupation data according to the received signal feature corresponding to the cell to which the cell belongs.
The method according to claim 2, wherein the step of receiving the preset signal feature corresponding to the cell to which the base station delivers is:

Receiving RRC signaling, MAC CE or physical layer signaling sent by the base station on the licensed spectrum or the unlicensed spectrum, and parsing the signal characteristics corresponding to the belonging cell.
The method for transmitting data according to the uplink multiplexing according to claim 2, wherein the step of detecting whether the uplink transmission channel is occupied further comprises:

Offset data in the uplink transport channel according to a preset signal feature corresponding to the cell to which the base station delivers.
The uplink multiplexing-based data transmission method according to claim 1, wherein the step of detecting whether the uplink transmission channel is occupied further comprises:

When it is detected that the uplink transmission channel is occupied, the uplink transmission channel is abandoned and the detection is continued.
The uplink multiplexing based data transmission method according to claim 1, wherein the step of acquiring an upload time slot allocated by the base station is:

Radio resource control RRC signaling for receiving transmission of a base station on a licensed spectrum or an unlicensed spectrum, The MAC CE or the physical layer signaling parses the upload time slot allocated by the base station.
A data transmission device based on uplink multiplexing, comprising:

a channel occupancy detecting module, configured to detect whether an uplink transmission channel is occupied;

An occupation data generating module, configured to generate preset occupation data when detecting that the uplink transmission channel is not occupied;

An uplink transmission channel occupant module, configured to acquire an uplink time slot allocated by the base station, and send the occupied space by using the uplink transmission channel before detecting that the first uplink time slot after the uplink transmission channel is not occupied arrives data;

And an uplink transmission module, configured to perform service data transmission by using the uplink transmission channel when detecting that the first uplink time slot after the uplink transmission channel is not occupied arrives.
The uplink multiplexing-based data transmission apparatus according to claim 7, wherein the apparatus further comprises a signal feature receiving module, configured to receive a preset signal characteristic corresponding to the cell to which the base station delivers;

The occupancy data generating module is further configured to generate occupancy data according to the received signal feature corresponding to the cell to which the cell belongs.
The uplink multiplexing-based data transmission apparatus according to claim 8, wherein the signal feature receiving module is configured to receive RRC signaling, MAC CE or physical layer sent by the base station on the licensed spectrum or the unlicensed spectrum. Signaling, parsing and obtaining signal characteristics corresponding to the cell to which it belongs. The device for transmitting data based on the uplink multiplexing according to claim 8, wherein the device further comprises a channel data cancellation module, configured to: according to a preset signal characteristic corresponding to the cell to which the base station delivers Offset data in the uplink transport channel.
The uplink multiplexing-based data transmission apparatus according to claim 7, wherein the channel occupancy detecting module is further configured to: when detecting that the uplink transmission channel is occupied, abandon the occupation of the uplink transmission channel, and continue to detect channel.
The uplink multiplexing channel data transmission apparatus according to claim 7, wherein the uplink transmission channel occupation module is further configured to receive the radio resource control RRC and MAC CE of the base station transmitting on the licensed spectrum or the unlicensed spectrum. The signaling or physical layer signaling is parsed to obtain an upload time slot allocated by the base station.