CN118019123A

CN118019123A - Data transmission method and device

Info

Publication number: CN118019123A
Application number: CN202211404302.6A
Authority: CN
Inventors: 卫淼; 易雄书; 仲崇显
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2024-05-10

Abstract

The embodiment of the application provides a data transmission method and device, which are used for reducing time domain interference among common-frequency heterogeneous cells and improving the reliability of data transmission. The SUL cell determines at least one first sub-time unit from the time units; the SUL cell sends scheduling information to the terminal device, wherein the scheduling information is used for scheduling the terminal device to transmit SUL data on at least one first sub-time unit. Because the SUL cell schedules SUL data on at least one first sub-time unit in the time unit, instead of randomly transmitting data (for example, scheduling SUL data on a sub-time unit in which the LTE cell is silent), uplink signal interference of signals of the common-frequency heterogeneous cell (such as CRS pilot frequency of the LTE cell) on the SUL cell can be reduced or even avoided, so that SUL cell performance is improved, and deployment difficulty of the SUL cell is reduced.

Description

Data transmission method and device

Technical Field

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

Background

In a long term evolution (Long Term Evolution, LTE) network, both downlink data demodulation and downlink quality measurements for users rely on Cell-specific reference signal (Cell-SPECIFIC REFERENCE SIGNAL, CRS) pilots. The CRS pilot is fixedly sent, the frequency domain occupies a full bandwidth Resource Block (RB), the time domain is fixedly sent on a specific symbol, as shown in fig. 1, in the downlink 1 port (port) and 2port scenarios, the CRS pilot occupies 4 orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) in the time domain, and in the downlink 4port scenario, the CRS pilot occupies 6 OFDM symbols in the time domain, as an example.

The third generation partnership project 3GPP (3rd Generation Partnership Project,3GPP) protocol has newly increased n98, n95, n97 bands, which can be used to assist in uplink (Supplementary Uplink, SUL) standards. However, these bands overlap entirely with LTE time division duplexing (Time Division Duplexing, TDD), corresponding to the n39, n34, n40 bands of LTE TDD, respectively.

The base station is usually installed at a higher position, and the shielding between the LTE cell and the SUL cell is less, and the attenuation is relatively small. Therefore, when the LTE TDD band does not exit the network, the CRS pilot fixedly transmitted by the LTE cell may cause serious interference to the uplink signal of the SUL cell.

How to reduce the time domain interference between different co-frequency cells (such as the time domain interference of the downlink signal of the LTE cell to the uplink signal of the SUL cell) is a technical problem to be solved.

Disclosure of Invention

The embodiment of the application provides a data transmission method and device, which are used for reducing time domain interference among common-frequency heterogeneous cells and improving the reliability of data transmission.

In a first aspect, a data transmission method is provided, which may be executed by a SUL cell or a chip in the SUL cell, where the method is executed by the SUL cell as an example, and the method includes: the SUL cell determines at least one first sub-time unit from the time units; the SUL cell sends scheduling information to the terminal device, wherein the scheduling information is used for scheduling the terminal device to transmit SUL data on at least one first sub-time unit.

In the embodiment of the application, the SUL cell schedules the SUL data on at least one first sub-time unit in the time units instead of randomly transmitting the data, so that the interference of signals of the common-frequency heterogeneous cell on the uplink signals of the SUL cell can be reduced or even avoided, the performance of the SUL cell is improved, and the deployment difficulty of the SUL cell is reduced.

In a possible implementation manner, when an uplink load of the SUL cell exceeds a preset load threshold, the SUL cell determines at least one first sub-time unit from the time units.

In the implementation manner, when the uplink load of the SUL cell exceeds a preset load threshold, the uplink signal interference possibility of the signal of the common-frequency heterogeneous cell to the SUL cell is high. Therefore, when the uplink load of the SUL cell exceeds the preset load threshold, the SUL cell schedules the SUL data on at least one first sub-time unit in the time units, so that the reliability of the scheme can be improved.

In one possible implementation, the time units include at least one first sub-time unit and at least one second sub-time unit; at least one second sub-time unit is used for the LTE cell to schedule transmission data, and at least one first sub-time unit is used for the LTE cell to silence.

In the implementation manner, the SUL cell schedules SUL data on at least one first sub-time unit in the time units, and the LTE cell is silent on the at least one sub-time unit, so that uplink signal interference of signals (such as CRS pilot frequency) of the LTE cell on the SUL cell can be reduced or even avoided, SUL cell performance is improved, and SUL cell deployment difficulty is reduced.

In one possible implementation, the SUL cell may determine at least one first sub-time unit from the time units according to an uplink load and an uplink average spectral efficiency of the SUL cell.

In the implementation manner, the SUL cell determines a sub-time unit for transmitting SUL data according to the uplink load and the uplink average spectrum efficiency of the SUL cell, so that the performance of the SUL cell can be preferentially ensured by taking the performance of a disturbed cell (such as the SUL cell) as a starting point, and the reliability of SUL data transmission is improved.

In a possible implementation, the SUL cell may also generate a first pattern for indicating: a sub-time unit for the LTE cell to schedule transmission data in the time unit and/or a sub-time unit for the LTE cell to silence in the time unit; the SUL cell sends a first pattern to the LTE cell.

In this implementation manner, after determining at least one first sub-time unit for the SUL cell to schedule transmission data, the SUL cell notifies the LTE cell in a first pattern manner, so that the LTE cell can silence on the at least one first sub-time unit according to the first pattern, thereby reducing or even avoiding uplink signal interference of signals of the LTE cell to the SUL cell.

In a possible implementation manner, the SUL cell may receive a second pattern from the LTE cell, and determine at least one first sub-time unit from the time units according to the second pattern; wherein the second pattern is for indicating: a sub-time unit for LTE cell scheduling transmission data in the time unit and/or a sub-time unit for LTE cell muting in the time unit.

In the implementation manner, the LTE cell determines at least one first sub-time unit for the SUL cell to schedule and transmit data, and notifies the SUL cell in a second pattern manner, so that the SUL cell schedules and transmits data on the at least one first sub-time unit, and the LTE cell is silent on the at least one sub-time unit, thereby reducing or even avoiding uplink signal interference of signals of the LTE cell on the SUL cell, ensuring the performance of the LTE cell, and improving the reliability of data transmission of the LTE cell and the SUL cell.

In a possible implementation manner, the SUL cell may further send indication information to the LTE cell, where the indication information is used to indicate that an uplink load of the SUL cell exceeds a preset load threshold, so that the LTE cell feeds back the second pattern. Therefore, the LTE cell can timely feed back the second pattern when the uplink load of the SUL cell exceeds a preset load threshold, and the reliability of the scheme can be improved.

In a possible implementation manner, the SUL cell performs interference detection on symbols corresponding to a plurality of sub-time units included in the time unit respectively to obtain NI values of the plurality of symbols; and the SUL cell screens out symbols with the NI value not exceeding a threshold value from the plurality of symbols, and determines at least one sub-time unit corresponding to the screened symbols as at least one first sub-time unit.

In the implementation mode, when the SUL cell needs to schedule data, data scheduling is performed based on interference detection, and sub-time units with better signals are screened out to transmit data. On one hand, the uplink signal interference of signals of the LTE cell to the SUL cell can be reduced or even avoided, and the performances of the SUL cell and the LTE cell are ensured; on the other hand, interaction between SUL cells and LTE cells can be reduced, system resources are saved, and data transmission efficiency is improved.

The LTE cell may configure the silent sub-time unit by itself, so that LTE does not occupy the whole time unit completely, and when the SUL cell needs to schedule data, the sub-time unit with better signal may be screened out for transmitting data when data scheduling is performed based on interference detection, which may be particularly referred to the description of the corresponding implementation manner of the second aspect.

In one possible implementation, the threshold is an average of NI values for a plurality of symbols. Of course, this is by way of example only, and other implementations are actually possible.

In a possible implementation, if at least one first sub-time unit is consecutive in time domain, the SUL cell may schedule SUL data transmission by means of a start and length indication value (START AND LENGTH indicator value, SLIV), e.g. the scheduling information comprises a start symbol, a number of consecutive symbols for the terminal device to transmit SUL data. If at least one first sub-time unit is discontinuous in the time domain, the scheduling information further needs to additionally indicate sub-time units that the terminal device cannot use, e.g. the scheduling information includes: the start symbol used for the terminal device to transmit the SUL data, the number of consecutive symbols, and the symbols that cannot be used for the terminal device to transmit the SUL data.

In a second aspect, a data transmission method is provided, which may be executed by an LTE cell or a chip in the LTE cell, where the method is executed by the LTE cell, and the method includes: the LTE cell determines at least one first sub-time unit from the time units; the LTE cell is silenced over at least one first sub-time unit.

In a possible implementation, the time units include at least one first sub-time unit and at least one second sub-time unit. Accordingly, the method may further comprise: the LTE cell schedules transmission data on at least one second sub-time unit.

In a possible implementation, the LTE cell may receive a first pattern from the SUL cell, the first pattern being used to indicate: a sub-time unit for LTE cell scheduling transmission data in the time unit and/or a sub-time unit for LTE cell muting in the time unit. Accordingly, the LTE cell may determine at least one first sub-time unit from the time units according to the first pattern.

In a possible implementation manner, before the LTE cell determines at least one first sub-time unit from the time units, the LTE cell may further receive indication information from the SUL cell, where the indication information is used to indicate that an uplink load of the SUL cell exceeds a preset load threshold. Correspondingly, after receiving the indication information, the LTE cell may determine at least one first sub-time unit from the time units according to the downlink load and the downlink average spectrum effect of the LTE cell.

In a possible implementation, the LTE cell may generate and send a second pattern to the SUL cell, the second pattern being used to indicate: a sub-time unit for LTE cell scheduling transmission data in the time unit and/or a sub-time unit for LTE cell muting in the time unit.

In a possible implementation manner, the LTE cell may determine a third pattern corresponding to the downlink load of the LTE cell according to a mapping relationship between the downlink load and the pattern; wherein the third pattern is for indicating: a sub-time unit for LTE cell scheduling transmission data in the time unit and/or a sub-time unit for LTE cell muting in the time unit. And the LTE cell may determine at least one first sub-time unit from the time units according to the third pattern.

In a third aspect, a communication apparatus is provided, the apparatus comprising means or units or technical means for performing the method as described in the first aspect or any one of the possible implementations of the first aspect.

Illustratively, the apparatus may include: the processing module is used for determining at least one first sub-time unit from the time units; and the receiving and transmitting module is used for sending scheduling information to the terminal equipment, wherein the scheduling information is used for scheduling the terminal equipment to transmit SUL data on at least one first sub-time unit.

In a possible implementation manner, the processing module is configured to determine at least one first sub-time unit from the time units when an uplink load of the SUL cell exceeds a preset load threshold.

In one possible implementation, the time units include at least one first sub-time unit and at least one second sub-time unit; at least one second sub-time unit is used for Long Term Evolution (LTE) cell scheduling transmission data, and at least one first sub-time unit is used for LTE cell muting.

In a possible implementation manner, the processing module is configured to determine at least one first sub-time unit from the time units according to an uplink load and an uplink average spectral efficiency of the SUL cell.

In a possible implementation manner, the processing module is further configured to generate a first pattern, where the first pattern is used to indicate: a sub-time unit for the LTE cell to schedule transmission data in the time unit and/or a sub-time unit for the LTE cell to silence in the time unit; and the transceiver module is also used for sending the first pattern to the LTE cell.

In a possible implementation manner, the transceiver module is further configured to receive a second pattern from the LTE cell; the processing module is used for determining at least one first sub-time unit from the time units according to the second pattern; wherein the second pattern is for indicating: a sub-time unit for LTE cell scheduling transmission data in the time unit and/or a sub-time unit for LTE cell muting in the time unit.

In a possible implementation manner, the transceiver module is further configured to send indication information to the LTE cell, where the indication information is used to indicate that an uplink load of the SUL cell exceeds a preset load threshold, so that the LTE cell feeds back the second pattern.

In a possible implementation manner, a processing module is configured to perform interference detection on symbols corresponding to a plurality of sub-time units included in a time unit, so as to obtain interference noise NI values of the plurality of symbols; and screening symbols with the NI value not exceeding a threshold value from the plurality of symbols, and determining at least one sub-time unit corresponding to the screened symbols as at least one first sub-time unit.

In a fourth aspect, there is provided a communication device comprising means or units or technical means for performing the method as described in the second aspect or any one of the possible implementations of the second aspect.

Illustratively, the apparatus may include a processing module and a transceiver module, wherein: the receiving and transmitting module is used for receiving and transmitting data and scheduling transmission data; the processing module is used for determining at least one first sub-time unit from the time units; and controlling the transceiver module to silence over at least one first sub-time unit.

In one possible implementation, the time units include at least one first sub-time unit and at least one second sub-time unit; the processing module is further configured to control the transceiver module to schedule transmission of data over at least one second sub-time unit.

In a possible implementation manner, the transceiver module is further configured to receive a first pattern from the SUL cell, where the first pattern is used to indicate: a sub-time unit for the LTE cell to schedule transmission data in the time unit and/or a sub-time unit for the LTE cell to silence in the time unit; the processing module is specifically configured to determine at least one first sub-time unit from the time units according to the first pattern.

In a possible implementation manner, the transceiver module is further configured to receive indication information from the SUL cell, where the indication information is used to indicate that an uplink load of the SUL cell exceeds a preset load threshold; the processing module is specifically configured to determine at least one first sub-time unit from the time units according to the downlink load and the downlink average spectrum effect of the LTE cell.

In a possible implementation manner, the processing module is further configured to generate a second pattern, where the second pattern is used to indicate: a sub-time unit for the LTE cell to schedule transmission data in the time unit and/or a sub-time unit for the LTE cell to silence in the time unit; and the transceiver module is also used for sending the second pattern to the SUL cell.

In a possible implementation manner, the processing module is specifically configured to determine a third pattern corresponding to a downlink load of the LTE cell according to a mapping relationship between the downlink load and the pattern; wherein the third pattern is for indicating: a sub-time unit for the LTE cell to schedule transmission data in the time unit and/or a sub-time unit for the LTE cell to silence in the time unit; and determining at least one first sub-time unit from the time units according to the third pattern.

In a fifth aspect, there is provided a communication apparatus comprising: a processor and interface circuitry for receiving signals from or transmitting signals from other communication devices than the communication device to the processor for implementing the method as described in the first aspect or any one of the possible implementations of the second aspect, by logic circuitry or executing code instructions.

In a sixth aspect, there is provided a computer readable storage medium comprising a program or instructions which, when run on a computer, cause a method as described in any one of the possible implementations of the first aspect or the second aspect or any one of the possible implementations of the second aspect to be performed.

In a seventh aspect, a computer program product is provided, having instructions stored therein, which when run on a computer, cause the computer to perform the method as described in the first aspect or any one of the possible implementations of the second aspect or the second aspect.

The technical effects of the second aspect to the seventh aspect are specifically referred to the technical effects that can be achieved by the corresponding designs in the first aspect, and the detailed description is not repeated here.

Drawings

Fig. 1 is a schematic diagram of time-frequency resources of CRS pilot;

Fig. 2 is a network architecture diagram of a communication system to which an embodiment of the present application is applicable;

fig. 3 is a flowchart of a data transmission method according to an embodiment of the present application;

fig. 4 is a schematic diagram of a resource scheduling scenario provided in an embodiment of the present application;

FIG. 5 is a schematic diagram of another resource scheduling scenario provided in an embodiment of the present application;

fig. 6 is a specific example of a data transmission method according to an embodiment of the present application;

Fig. 7 is a specific example of a data transmission method according to an embodiment of the present application;

Fig. 8 is a specific example of a data transmission method according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of another communication device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The terms "system" and "network" in embodiments of the application may be used interchangeably. "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s), such as at least one of a, b, or c, may mean: a, b, or c, or a and b, or b and c, or a and b and c.

And, unless specified to the contrary, references to "first," "second," etc. ordinal words of embodiments of the present application are used for distinguishing between multiple objects and are not used for limiting the order, timing, priority, or importance of the multiple objects. For example, the first priority criterion and the second priority criterion are merely for distinguishing between different criteria, and are not indicative of the difference in content, priority, or importance of the two criteria, etc.

Furthermore, the terms "comprising" and "having" in the embodiments of the application and in the claims and drawings are not exclusive. For example, a process, method, system, article, or apparatus that comprises a list of steps or modules is not limited to only those steps or modules but may include other steps or modules not listed.

The technical scheme of the embodiment of the application can be applied to various communication systems, such as: fourth generation (4th generation,4G) communication systems, fifth generation (5th generation,5G) communication systems, sixth generation (6th generation,6G) communication systems, or other future evolution systems, or various other wireless communication systems employing wireless access technologies, and the like. The technical scheme of the embodiment of the application can be adopted as long as the communication system has a cross-system same-frequency networking (i.e. different system networks share the same frequency band).

The following takes LTE and SUL networking scenarios as examples. It will be appreciated that the SUL is a supplementary uplink configured for the terminal device in order to improve the uplink coverage of the terminal device. The base station supporting (or otherwise providing) the SUL is referred to as a SUL base station, and the coverage area of the SUL base station may be referred to as a SUL cell.

As shown in fig. 2, a network architecture diagram of a communication system including an LTE base station, a SUL base station, and a terminal device to which the embodiment of the present application is applied is shown. The terminal equipment is located in the areas covered by the LTE base station and the SUL base station at the same time, and can communicate with the LTE base station and the SUL base station at the same time.

It is understood that a cell refers to an area covered by one base station or a part (sector antenna) of a base station in a cellular mobile communication system, in which a mobile station (e.g., a terminal device) can reliably communicate with the base station through a wireless channel. One base station may have one or more cells, and in the scenario shown in fig. 2, only one cell of each base station is illustrated, and the practical limitation is not limited thereto.

For ease of description, the interaction procedure of the terminal device and the control device (e.g., base station) of the cell may be described herein as an interaction procedure of the terminal device and the cell, for example, communication between the SUL base station and the terminal device may be described as communication between the SUL cell and the terminal device, communication between the LTE base station and the terminal device may be described as communication between the LTE cell and the terminal device, and communication between the LTE base station and the SUL base station may be described as communication between the LTE cell and the SUL cell.

The LTE base station and the SUL base station may be the same type of base station, or may be different types of base stations, which is not limited by the present application. The base station may specifically be a base station (base station), an evolved NodeB (eNodeB), a transmission and reception point (transmission reception point, TRP), a next generation NodeB (gNB) in a fifth generation (5th generation,5G) mobile communication system, a next generation base station in a sixth generation (6th generation,6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc.; the present application may also be a module or unit that performs a function of a base station part, for example, a Central Unit (CU) or a Distributed Unit (DU). The CU here performs the functions of the radio resource control protocol and the packet data convergence layer protocol (PACKET DATA convergence protocol, PDCP) of the base station, and may also perform the functions of the service data adaptation protocol (SERVICE DATA adaptation protocol, SDAP); the DU performs the functions of the radio link control layer and the medium access control (medium access control, MAC) layer of the base station, and may also perform the functions of a part of the physical layer or the entire physical layer, and for a detailed description of the above protocol layers, reference may be made to the relevant technical specifications of the third generation partnership project (3rd generation partnership project,3GPP). The radio access network device may be a macro base station, a micro base station, an indoor station, a relay node, a donor node, or the like. The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the wireless access network equipment. For convenience of description, a base station will be described below as an example of a radio access network device.

A terminal may also be referred to as a terminal device, user Equipment (UE), mobile station, mobile terminal, etc. The terminal may be widely applied to various scenes, for example, device-to-device (D2D), vehicle-to-device (vehicle to everything, V2X) communication, machine-type communication (MTC), internet of things (internet of things, IOT), virtual reality, augmented reality, industrial control, autopilot, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, and the like. The terminal can be a mobile phone, a tablet personal computer, a computer with a wireless receiving and transmitting function, a wearable device, a vehicle, an unmanned aerial vehicle, a helicopter, an airplane, a ship, a robot, a mechanical arm, intelligent household equipment and the like. The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the terminal.

It can be understood that the SUL cell and the LTE cell are cells under different network systems, but share the same frequency band, for example, the n98, n95 and n97 frequency bands of the SUL correspond to the n39, n34 and n40 frequency bands of the LTE TDD respectively, so that there is a problem of inter-cell interference, for example, the CRS pilot frequency fixedly transmitted by the LTE cell produces serious interference on an uplink signal of the SUL cell, which results in a problem that the SUL cell has poor performance and even cannot be deployed.

In turn, uplink signals of the SUL cell may also interfere with uplink or downlink signals of LTE.

The description is mainly given herein by taking the interference generated by the CRS pilot of the LTE cell to the uplink signal of the SUL cell as an example, and correspondingly, the LTE cell may also be referred to as a scrambling cell, and the SUL cell may also be referred to as a scrambling cell.

It should be understood that, the network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and are not limited to the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided in the embodiments of the present application is equally applicable to similar technical problems.

Referring to fig. 3, a flowchart of a data transmission method according to an embodiment of the present application may be applied to the scenario shown in fig. 2, where the method includes:

s301, determining at least one first sub-time unit from the time units by the SUL cell.

Wherein the time cells include one or more sub-time cells. Time units such as time slots, frames, etc.; the sub-time units are, for example, subframes, symbols, etc. The present application is not limited as long as the time unit is satisfied to be greater than the sub time unit.

The preset load threshold may be defined by a protocol, a network device configuration, a SUL cell and LTE cell contract, or a network device and terminal device contract, which is not limited by the present application.

S302, the SUL cell sends scheduling information to the terminal equipment, wherein the scheduling information is used for scheduling the terminal equipment to transmit SUL data on at least one first sub-time unit.

The scheduling information may specifically be uplink scheduling information, which is used for scheduling the terminal device to send SUL data to the SUL cell in at least the first sub-time unit.

S303, the LTE cell determines at least one first sub-time unit from the time units.

S304, the LTE cell is silenced on at least one first sub-time unit.

Wherein silence refers to no data transmission or no data transmission. For example, the LTE cell muting on at least one first sub-time unit may be described as the LTE cell not transmitting data (data including uplink data and/or downlink data) on at least one first sub-time unit.

The sequence of steps S301 to S302 and steps S303 to S304 is not limited in the present application.

Optionally, the time units may include at least one first sub-time unit and at least one second sub-time unit. At least one second sub-time unit is used for dispatching transmission data by the LTE cell, and at least one first sub-time unit is used for silencing the LTE cell. In other words, the LTE cell may transmit data on at least one second sub-time unit, the SUL cell may transmit data on at least one first sub-time unit, and the LTE cell may not transmit data on at least one first sub-time unit. Further alternatively, the SUL cell may be silent (i.e., not transmitting data) for at least one second sub-time unit, i.e., the SUL cell's time to transmit data and the LTE time to transmit data are all staggered.

SUL cells when scheduling SUL data transmission, if at least one first sub-time unit is time-domain continuous (e.g., centered at the beginning symbol position of the time unit and its vicinity), SUL data transmission may be scheduled by means of a start and length indication value (START AND LENGTH indicator value, SLIV), e.g., the scheduling information carries the number of start symbols, consecutive symbols, for the terminal device to transmit SUL data. Alternatively, the symbol may be an OFDM symbol. For example, as shown in fig. 4, symbols #0 and #1 are unavailable symbols, and at scheduling SLIV, scheduling data starts from a Resource Element (RE) corresponding to symbol # 2.

When the SUL cell schedules SUL data transmission, if at least one first sub-time unit is discontinuous in the time domain, that is, at least one second symbol is dispersed in different sub-time units, the SUL cell needs to additionally indicate to the terminal device a sub-time unit that the terminal device cannot use, for example, a starting symbol for the terminal device to transmit SUL data, the number of continuous symbols, and a symbol that cannot be used for the terminal device to transmit SUL data are carried in scheduling information. For example, as shown in fig. 5, symbols #0, #4, #7, #11 are unavailable symbols, and REs corresponding to the symbols need to be skipped during scheduling.

In the above scheme, the SUL cell schedules SUL data on at least one first sub-time unit in the time units, instead of randomly transmitting data, so that uplink signal interference of signals of the common-frequency heterogeneous cell to the SUL cell can be reduced or even avoided, for example, the LTE cell is silent on the at least one sub-time unit, and uplink signal interference of signals (e.g. CRS pilot) of the LTE cell to the SUL cell can be reduced or even avoided. Therefore, the embodiment of the application can improve the SUL cell performance and reduce the deployment difficulty of the SUL cell.

Optionally, the SUL cell may determine at least one first sub-time unit from the time units when at least one of the following conditions is met: (1) the uplink load of the SUL cell exceeds a preset load threshold; (2) The uplink waiting time delay of the SUL cell exceeds a preset time delay threshold; (3) The uplink throughput rate of the SUL cell exceeds a preset throughput rate threshold. It will be appreciated that the above conditions are merely examples, and other implementations are also possible in practical applications, so long as they are easy to generate co-frequency heterogeneous cell signal interference. In this way, the reliability of the scheme can be improved.

In one possible implementation, the performance of a victim cell (e.g., a SUL cell) may be used as a starting point, and the victim cell notifies a donor cell (e.g., an LTE cell) to perform muting configuration.

Referring to fig. 6, a specific example of a data transmission method is provided in an embodiment of the present application.

When specifically implemented, the step S301 may include: the SUL cell determines a sub-time unit for SUL cell scheduling transmission SUL data from time units according to the uplink load and the uplink average spectrum effect of the SUL cell, namely at least one first sub-time unit, and the rest other sub-time units are at least one second sub-time unit; the SUL cell generates a first pattern (Parttern) based on at least one first sub-time unit and/or at least one second sub-time unit over time units.

As shown in fig. 6, step S305 is also performed after step S301 and before step S303:

s305, the SUL cell sends a first pattern to the LTE cell, and correspondingly, the LTE cell receives the first pattern from the SUL cell.

Wherein the first pattern is for indicating: a sub-time unit (i.e., at least one second sub-time unit) in the time unit for LTE cell scheduling transmission data, and/or a sub-time unit (i.e., at least one first sub-time unit) in the time unit for LTE cell muting.

It may be appreciated that if the sub-time unit of the LTE cell muting is a sub-time unit of the SUL cell scheduling transmission data, and the sub-time unit of the SUL cell muting is a sub-time unit of the LTE cell scheduling transmission data, the first pattern may be further described as that the first pattern is used to indicate: a sub-time unit (i.e., at least one first sub-time unit) of time units for SUL cells to schedule transmission data, and/or a sub-time unit (i.e., at least one second sub-time unit) of time units for SUL cells to silence.

Referring to table 1, as an example of the first pattern, a time unit is a frame, a sub-time unit is a subframe, and the first pattern indicates both a sub-time unit for LTE cell scheduling transmission data in the time unit and a sub-time unit for LTE cell muting in the time unit.

TABLE 1 first pattern

Subframe number	0	1	2	3	4	5	6	7	8	9
											Value of	1	0	0	0	1	1	0	0	1	1

For example, in table 1, when the value corresponding to the subframe is 0, the LTE cell is indicated to silence on the subframe, that is, the LTE cell may schedule transmission data on subframes 0, 4, 5, 8, 9 and silence on subframes 1,2,3, 6, 7; or when the corresponding value of the subframe is 1, the LTE cell is indicated to be silent on the subframe, namely, the LTE cell can schedule to transmit data on subframes 1,2,3, 6 and 7 and silence on subframes 0, 4, 5, 8 and 9.

Of course, table 1 is only an example, and other representation manners of the first pattern are also possible in practical application.

The first pattern may also be referred to as a first muting pattern, since the first pattern may indicate sub-time units for LTE cell muting (i.e. at least one first sub-time unit) and/or sub-time units for SUL cell muting (i.e. at least one second sub-time unit). Or the first pattern may also be referred to as a first scheduling pattern, since the first pattern may indicate sub-time units (i.e. at least one second sub-time unit) for LTE cells to schedule transmission data and/or sub-time units (i.e. at least one first sub-time unit) for SUL cells to schedule transmission data. Of course, in practical application, the first pattern may also have other names, and the present application is not limited thereto.

For convenience of description, hereinafter, a time unit is described as a frame and a sub-time unit is described as a subframe. Wherein, the subframe for LTE cell muting may be referred to as a muting subframe, and the subframe for LTE cell scheduling transmission data may be referred to as a non-muting subframe.

Correspondingly, the step S303 may specifically include: the LTE cell may determine at least one first sub-time unit from the time units according to the first pattern. Optionally, the LTE cell may further determine at least one second sub-time unit from the time units according to the first pattern.

For example, the first pattern indicates both a sub-time unit for LTE cells to schedule transmission data and a sub-time unit for SUL cells to schedule transmission data, e.g. table 1 above, the LTE cells may determine at least one first sub-time unit and at least one second sub-time unit directly from the first pattern.

For example, if the first pattern indicates a sub-time unit for the LTE cell to schedule transmission data, the LTE cell may directly determine at least one second sub-time unit according to the first pattern, and the sub-time units other than the at least one second sub-time unit in the time units are at least one first sub-time unit.

For example, if the first pattern indicates a sub-time unit for the SUL cell to schedule transmission data, the LTE cell may determine at least one first sub-time unit directly according to the first pattern, and sub-time units other than the at least one first sub-time unit in the time units are at least one second sub-time unit.

As shown in fig. 6, steps S306 and S307 are also performed after step S303 and before step S304:

s306, the LTE cell performs muting configuration, so that the LTE cell mutes on at least one first sub-time unit when the at least one first sub-time unit arrives (i.e., step S304 is performed, where step S304 may refer to step S304 in fig. 3 and is not repeated herein).

In particular implementations, the LTE cell may be configured for muting based on a multimedia broadcast multicast single frequency network (Multimedia Broadcast multicast SERVICE SINGLE Frequency Network, MBSFN). It can be appreciated that the LTE cell can receive the patterns sent by the multiple disturbed cells at the same time, and if the LTE cell receives the multiple patterns, the LTE cell can take the union of the muting subframes of the multiple patterns to perform muting configuration. For example: SUL cell A schedules SUL data transmission on subframes 1, 2, 3, and SUL cell B schedules SUL data transmission on subframes 6, 7, 8, then LTE cells may be configured to silence on subframes 1, 2, 3, 6, 7, 8.

As shown in fig. 6, after the LTE cell completes the muting configuration, step S307 may also be performed:

S307, the LTE cell sends a notification message to the SUL cell to notify the SUL cell that the LTE cell is silent on at least one first sub-time unit. The LTE cell, after receiving the notification message, schedules the terminal device to transmit the SUL data on at least one first sub-time unit, i.e. performs step S302 (step S302 may refer to step S302 in fig. 3, and is not described herein). In this way, the reliability of data transmission can be further improved.

According to the scheme, the SUL cell determines at least one first sub-time unit for the SUL cell to schedule transmission data, and notifies the LTE cell to silence on the at least one first sub-time unit, so that uplink signal interference of signals (such as CRS pilot frequency) of the LTE cell to the SUL cell can be reduced or even avoided, performance of the SUL cell is preferentially ensured, and reliability of SUL data transmission is improved.

In one possible implementation, the scrambling cell (e.g., LTE cell) may perform muting configuration by itself, and notify the configuration result to the interfered cell (e.g., SUL cell) based on the performance of the scrambling cell. The disturbed cell schedules data transmission based on the configuration result.

Referring to fig. 7, a specific example of a data transmission method is provided in an embodiment of the present application.

As shown in fig. 7, before step S301, the method further includes:

S308, the SUL cell sends indication information to the LTE cell, wherein the indication information is used for indicating that the uplink load of the SUL cell exceeds a preset load threshold.

Correspondingly, the LTE cell receives the indication information from the SUL cell. The step S303 may specifically include: after receiving the indication information, the LTE cell determines at least one first sub-time unit from the time units. For example, the LTE cell determines at least one first sub-time unit from the time units according to the downlink load and the downlink average spectrum effect of the LTE cell, and the remaining other sub-time units are at least one second sub-time unit.

And S309, the LTE cell generates a second pattern according to at least one first sub-time unit and/or at least one second sub-time unit in the time unit.

The second pattern is used for indicating: a sub-time unit (i.e., at least one second sub-time unit) in the time unit for LTE cell scheduling transmission data, and/or a sub-time unit (i.e., at least one first sub-time unit) in the time unit for LTE cell muting. The specific implementation manner of the second pattern may refer to the specific implementation manner of the first pattern, which is not described herein.

S310, the LTE cell performs muting configuration, so that the LTE cell mutes on at least one first sub-time unit when the at least one first sub-time unit arrives (i.e., step S304 is performed, where step S304 may refer to step S304 in fig. 3 and is not repeated herein).

It will be appreciated that the present application is not limited to the order of S310 and S309, and is not limited to the order of S310 and S311.

S311, the LTE cell sends the second pattern to the SUL cell, and the SUL cell receives the second pattern from the LTE cell.

Correspondingly, the step S301 includes, when it is specifically implemented: the SUL cell determines at least one first sub-time unit from the time units according to the second pattern. After step S301, step S302 is performed (step S302 may refer to step S302 in fig. 3, and will not be described again).

For example, the second pattern indicates both a sub-time unit for LTE cell scheduled transmission data and a sub-time unit for SUL cell scheduled transmission data, e.g. table 1 above, the SUL cell may determine at least one first sub-time unit and at least one second sub-time unit directly from the second pattern.

For example, if the second pattern indicates a sub-time unit for the LTE cell to schedule transmission data, the SUL cell may determine at least one second sub-time unit directly according to the first pattern, and the sub-time units other than the at least one second sub-time unit in the time units are at least one first sub-time unit.

For example, the second pattern indicates sub-time units for the SUL cell to schedule transmission data, and the SUL cell may determine at least one first sub-time unit directly from the first pattern, and other sub-time units except the at least one first sub-time unit in the time units are at least one second sub-time unit.

It should be understood that the present application does not limit the order of step S310 and step S311.

According to the scheme, the LTE cell determines at least one first sub-time unit for the SUL cell to schedule and transmit data, and notifies the SUL cell, so that the SUL cell schedules and transmits data on the at least one first sub-time unit, and the LTE cell is silent on the at least one sub-time unit, and therefore uplink signal interference of signals (such as CRS pilot frequency) of the LTE cell on the SUL cell can be reduced or even avoided, performance of the LTE cell is guaranteed, and reliability of data transmission of the LTE cell and the SUL cell is improved.

In one possible implementation, the scrambling cell (i.e., LTE cell) may perform data scheduling based on its own load condition, and the scrambling cell (i.e., SUL cell) may perform data scheduling through interference measurement results.

Referring to fig. 8, a specific example of a data transmission method is provided in an embodiment of the present application.

As shown in fig. 8, the step S301 may specifically include: the SUL cell performs interference detection on the symbols respectively corresponding to the plurality of sub-time units included in the time unit to obtain interference noise NI values of the plurality of symbols; and the SUL cell screens out symbols with the NI value not exceeding a threshold value from the plurality of symbols, and determines at least one sub-time unit corresponding to the screened symbols as at least one first sub-time unit.

The threshold may be specified by a protocol, configured by a network device, agreed by a SUL cell and an LTE cell, agreed by a network device and a terminal device, or the like, which is not limited by the present application. For example, the threshold is an average of NI values of the plurality of symbols.

As shown in fig. 8, the step S303 may specifically include: the LTE cell determines a third pattern corresponding to the downlink load of the LTE cell according to the mapping relation between the downlink load and the pattern; the LTE cell determines at least one first sub-time unit from the time units according to the third pattern.

Wherein the third pattern is for indicating: a sub-time unit for LTE cell scheduling transmission data in the time unit and/or a sub-time unit for LTE cell muting in the time unit. The specific implementation of the third pattern may refer to the specific implementation of the first pattern, which is not described herein.

For example, table 2 is an example of mapping relation of LTE cells according to downlink load and pattern.

Table 2 mapping relation between LTE cell downlink load and pattern

Downstream load	Pattern and method for producing the same
		0～10％	1000010000
10％～30％	1000110000
		30％～50％	1000110001
＞50％	1001110011

The intervals of the four downstream loads and the patterns corresponding to the respective intervals are shown in table 2. In the pattern, 0 represents a muting subframe of an LTE cell, and 1 represents a non-muting subframe of the LTE cell. Taking the scenario that the LTE uplink/downlink subframe ratio (SubframeAssignment) is SA2 as an example, that is, the subframe ratio in one radio frame is DSUDDDSUDD, where symbol D indicates that the subframe is used for downlink, symbol U indicates that the subframe is used for uplink, S indicates that the subframe is a special subframe, and if the downlink load is located in the interval of 0-10%, the DSUDDDSUDD is silent subframes except the first D (i.e., the first subframe) and the fourth D (i.e., the sixth subframe) from left to right.

It is understood that table 2 is only an example and not a limitation, and that the mapping relationship may actually have other variations.

Steps S302 and S304 in fig. 8 may refer to steps S302 and S304 in fig. 3, respectively, and are not described herein.

According to the scheme, the LTE cell configures the silent sub-time unit by itself, so that the LTE does not occupy the whole time unit completely, and when SUL cells need to schedule data, the sub-time unit with better signals can be screened out for data transmission when data scheduling is performed based on interference detection. On one hand, the uplink signal interference of signals (such as CRS pilot frequency) of the LTE cell to the SUL cell can be reduced or even avoided, the performance of the SUL cell and the LTE cell is guaranteed, on the other hand, the interaction of the SUL cell and the LTE cell can be reduced, system resources are saved, and the data transmission efficiency is improved.

The method provided by the embodiment of the application is described above with reference to the accompanying drawings, and the device provided by the embodiment of the application is described below with reference to the accompanying drawings.

It will be appreciated that, in order to implement the functions in the above embodiments, the LTE cell and the SUL cell include corresponding hardware structures and/or software modules that perform the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and method steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application scenario and design constraints imposed on the solution.

Fig. 9 and 10 are schematic structural diagrams of a possible communication device according to an embodiment of the present application. These communication devices may be used to implement the functions of the LTE cell or the SUL cell in the above method embodiments, so that the beneficial effects of the above method embodiments may also be implemented.

As shown in fig. 9, the communication device 900 includes a processing module 910 and a transceiver module 920. The communication device 900 is configured to implement the functions of the terminal or the base station in the method embodiments shown in fig. 3,6, 7, and 8.

For example, when the communication device 900 is used to implement the SUL cell functionality in the method embodiment shown in FIG. 3: the processing module 910 is configured to determine at least one first sub-time unit from the time units; the transceiver module 920 is configured to send scheduling information to a terminal device, where the scheduling information is used to schedule the terminal device to transmit SUL data over at least one first sub-time unit.

For example, when the communication device 900 is used to implement the functionality of an LTE cell in the method embodiment shown in fig. 3: the transceiver module 920 is configured to transmit and receive data and schedule transmission data; the processing module 910 is configured to determine at least one first sub-time unit from the time units, and control the transceiver module 920 to silence on the at least one first sub-time unit.

The more detailed description of the processing module 910 and the transceiver module 920 may be directly obtained by referring to the related description in the above method embodiments, which is not repeated herein.

As shown in fig. 10, the communication device 1000 includes a processor 1010 and an interface circuit 1020. The processor 1010 and the interface circuit 1020 are coupled to each other. It is understood that interface circuit 1020 may be a transceiver or an input-output interface. Optionally, the communication device 1000 may further comprise a memory 1030 for storing instructions to be executed by the processor 1010 or for storing input data required by the processor 1010 to execute instructions or for storing data generated after the processor 1010 executes instructions.

When the communication device 1000 is used to implement the method shown in fig. 3, the processor 1010 is configured to implement the functions of the processing module 910, and the interface circuit 1020 is configured to implement the functions of the transceiver module 920.

It is to be appreciated that the Processor in embodiments of the application may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (DIGITAL SIGNAL processors, DSPs), application Specific Integrated Circuits (ASICs), field programmable gate arrays (Field Programmable GATE ARRAY, FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general purpose processor may be a microprocessor, but in the alternative, it may be any conventional processor.

The method steps in the embodiments of the present application may be implemented by hardware, or may be implemented by executing software instructions by a processor. The software instructions may be comprised of corresponding software modules that may be stored in random access memory, flash memory, read only memory, programmable read only memory, erasable programmable read only memory, electrically erasable programmable read only memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in a base station or terminal. The processor and the storage medium may reside as discrete components in a base station or terminal.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, a network device, a user device, or other programmable apparatus. The computer program or instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer program or instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired or wireless means. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that integrates one or more available media. The usable medium may be a magnetic medium, e.g., floppy disk, hard disk, tape; but also optical media such as digital video discs; but also semiconductor media such as solid state disks. The computer readable storage medium may be volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage medium.

In various embodiments of the application, where no special description or logic conflict exists, terms and/or descriptions between the various embodiments are consistent and may reference each other, and features of the various embodiments may be combined to form new embodiments based on their inherent logic.

Claims

1. A data transmission method, comprising:

The auxiliary uplink SUL cell determines at least one first sub-time unit from the time units;

And the SUL cell sends scheduling information to the terminal equipment, wherein the scheduling information is used for scheduling the terminal equipment to transmit SUL data on the at least one first sub-time unit.

2. The method of claim 1, wherein the time units comprise the at least one first sub-time unit and at least one second sub-time unit;

The at least one second sub-time unit is used for scheduling transmission data by a Long Term Evolution (LTE) cell, and the at least one first sub-time unit is used for muting the LTE cell.

3. The method of claim 1 or 2, wherein the SUL cell determines at least one first sub-time unit from among time units, comprising:

and the SUL cell determines the at least one first sub-time unit from the time units according to the uplink load and the uplink average spectral efficiency of the SUL cell.

4. The method as recited in claim 2, further comprising:

The SUL cell generates a first pattern for indicating: a sub-time unit used for the LTE cell to schedule transmission data in the time unit and/or a sub-time unit used for the LTE cell to silence in the time unit;

the SUL cell sends the first pattern to the LTE cell.

5. The method of claim 1 or 2, wherein the method further comprises:

The SUL cell receives a second pattern from the LTE cell;

the SUL cell determines at least one first sub-time unit from time units, and comprises:

the SUL cell determines the at least one first sub-time unit from the time units according to the second pattern; wherein the second pattern is used for indicating: and the time unit is used for the LTE cell to schedule a sub-time unit for transmitting data and/or the time unit is used for the LTE cell to silence.

6. The method of claim 5, wherein the method further comprises:

And the SUL cell sends indication information to the LTE cell, wherein the indication information is used for indicating that the uplink load of the SUL cell exceeds a preset load threshold so that the LTE cell feeds back the second pattern.

7. The method of claim 1 or 2, wherein the SUL cell determines at least one first sub-time unit from among time units, comprising:

the SUL cell performs interference detection on symbols corresponding to a plurality of sub-time units included in the time unit respectively to obtain interference noise NI values of the plurality of symbols;

And the SUL cell screens out symbols with the NI value not exceeding a threshold value from the plurality of symbols, and determines at least one sub-time unit corresponding to the screened symbols as at least one first sub-time unit.

8. The method of claim 7, wherein the threshold is an average of NI values of the plurality of symbols.

9. The method of any of claims 1-8, wherein the at least one first sub-time unit is time domain continuous, the scheduling information comprising: the starting symbol and the number of continuous symbols are used for the terminal equipment to transmit the SUL data; or alternatively

The at least one first sub-time unit is discontinuous in a time domain, and the scheduling information includes: the start symbol used for the terminal device to transmit the SUL data, the number of consecutive symbols, and the symbols that cannot be used for the terminal device to transmit the SUL data.

10. The method of any of claims 1-9, wherein the SUL cell determines at least one first sub-time unit from among time units, comprising:

and when the uplink load of the SUL cell exceeds a preset load threshold, determining at least one first sub-time unit from the time units by the SUL cell.

11. A data transmission method, comprising:

The LTE cell determines at least one first sub-time unit from the time units;

the LTE cell is silenced over the at least one first sub-time unit.

12. The method of claim 11, wherein the time units comprise the at least one first sub-time unit and at least one second sub-time unit;

the method further comprises the steps of:

the LTE cell schedules transmission data on the at least one second sub-time unit.

13. The method of claim 11 or 12, further comprising:

The LTE cell receives a first pattern from the SUL cell, the first pattern being for indicating: a sub-time unit used for the LTE cell to schedule transmission data in the time unit and/or a sub-time unit used for the LTE cell to silence in the time unit;

The LTE cell determines at least one first sub-time unit from time units, and the method comprises the following steps:

The LTE cell determines the at least one first sub-time unit from the time units according to the first pattern.

14. The method of claim 11 or 12, further comprising, before the LTE cell determines at least one first sub-time unit from time units:

the LTE cell receives indication information from an SUL cell, wherein the indication information is used for indicating that the uplink load of the SUL cell exceeds a preset load threshold;

and the LTE cell determines the at least one first sub-time unit from the time units according to the downlink load and the downlink average spectral efficiency of the LTE cell.

15. The method as recited in claim 14, further comprising:

the LTE cell generates a second pattern for indicating: a sub-time unit used for the LTE cell to schedule transmission data in the time unit and/or a sub-time unit used for the LTE cell to silence in the time unit;

the LTE cell sends the second pattern to the SUL cell.

16. The method of claim 11 or 12, wherein the LTE cell determines at least one first sub-time unit from time units, comprising:

The LTE cell determines a third pattern corresponding to the downlink load of the LTE cell according to the mapping relation between the downlink load and the pattern; wherein the third pattern is used for indicating: a sub-time unit used for the LTE cell to schedule transmission data in the time unit and/or a sub-time unit used for the LTE cell to silence in the time unit;

The LTE cell determines the at least one first sub-time unit from the time units according to the third pattern.

17. A communication device, comprising:

the processing module is used for determining at least one first sub-time unit from the time units;

And the receiving and transmitting module is used for sending scheduling information to the terminal equipment, wherein the scheduling information is used for scheduling the terminal equipment to transmit SUL data on the at least one first sub-time unit.

18. The apparatus of claim 17, wherein the time cells comprise the at least one first sub-time cell and at least one second sub-time cell;

19. The apparatus of claim 17 or 18, wherein the processing module is configured to determine the at least one first sub-time unit from the time units based on an uplink load and an uplink average spectral efficiency of a SUL cell.

20. The apparatus of claim 18, wherein the processing module is further for generating a first pattern for indicating: a sub-time unit used for the LTE cell to schedule transmission data in the time unit and/or a sub-time unit used for the LTE cell to silence in the time unit;

The transceiver module is further configured to send the first pattern to the LTE cell.

21. The apparatus of claim 17 or 18, wherein the transceiver module is further configured to receive a second pattern from the LTE cell;

The processing module is used for determining the at least one first sub-time unit from the time units according to the second pattern; wherein the second pattern is used for indicating: and the time unit is used for the LTE cell to schedule a sub-time unit for transmitting data and/or the time unit is used for the LTE cell to silence.

22. The apparatus of claim 21, wherein the transceiver module is further configured to send indication information to the LTE cell, the indication information being configured to indicate that an uplink load of the SUL cell exceeds the preset load threshold, so that the LTE cell feeds back the second pattern.

23. The apparatus of claim 17 or 18, wherein the processing module is configured to perform interference detection on symbols corresponding to a plurality of sub-time units included in the time unit, to obtain interference noise NI values of the plurality of symbols; and screening symbols with the NI value not exceeding a threshold value from the plurality of symbols, and determining at least one sub-time unit corresponding to the screened symbols as at least one first sub-time unit.

24. A data transmission device, comprising a processing module and a transceiver module, wherein:

the receiving and transmitting module is used for receiving and transmitting data and scheduling transmission data;

The processing module is used for determining at least one first sub-time unit from the time units; and controlling the transceiver module to silence over the at least one first sub-time unit.

25. The apparatus of claim 24, wherein the time cells comprise the at least one first sub-time cell and at least one second sub-time cell;

The processing module is further configured to control the transceiver module to schedule transmission of data over the at least one second sub-time unit.

26. The apparatus of claim 24 or 25, wherein the transceiver module is further configured to receive a first pattern from a SUL cell, the first pattern being configured to indicate: a sub-time unit used for the LTE cell to schedule transmission data in the time unit and/or a sub-time unit used for the LTE cell to silence in the time unit;

the processing module is specifically configured to determine the at least one first sub-time unit from the time units according to the first pattern.

27. The apparatus of claim 24 or 25, wherein the transceiver module is further configured to receive indication information from a SUL cell, the indication information being configured to indicate that an uplink load of the SUL cell exceeds a preset load threshold;

The processing module is specifically configured to determine the at least one first sub-time unit from the time units according to a downlink load and a downlink average spectrum effect of the LTE cell.

28. The apparatus of claim 27, wherein the processing module is further for generating a second pattern for indicating: a sub-time unit used for the LTE cell to schedule transmission data in the time unit and/or a sub-time unit used for the LTE cell to silence in the time unit;

The transceiver module is further configured to send the second pattern to the SUL cell.

29. A communication device, comprising: a processor and interface circuitry to receive signals from or transmit signals to the processor from or send signals to other communication devices than the communication device, the processor being configured to implement the method of any one of claims 1-10 or the method of any one of claims 11-16 by logic circuitry or execution of code instructions.

30. A computer readable storage medium comprising a program or instructions which, when run on a computer, cause the method of any one of claims 1-10 to be performed or cause the method of any one of claims 11-16 to be performed.