CN114175798A - Method, device, equipment and storage medium for data transmission on unlicensed spectrum - Google Patents

Abstract

The application discloses a data transmission method, a device, equipment and a storage medium on an unauthorized frequency spectrum, and belongs to the technical field of communication. The method comprises the following steps: when the terminal cannot send first data on the first uplink resource, the terminal determines a second uplink resource according to a second uplink resource configuration, wherein the first uplink resource corresponds to the first uplink resource configuration, and the first uplink resource configuration and the second uplink resource configuration are two different resource configurations of the same uplink BWP; and the terminal sends the first data on the second uplink resource. According to the technical scheme provided by the embodiment of the application, a plurality of uplink resource configurations are configured for the same uplink BWP, so that the transmission opportunity of uplink data is improved, and the diversity gain is improved.

Description

Method, device, equipment and storage medium for data transmission on unlicensed spectrum Technical Field

The present application relates to the field of communications technologies, and in particular, to a method, an apparatus, a device, and a storage medium for data transmission on an unlicensed spectrum.

Background

The 5G NR (New Radio, New air interface) system may occupy an unlicensed spectrum for data transmission in addition to the licensed spectrum for information transmission, so as to improve the utilization rate of spectrum resources.

Unlicensed spectrum is a spectrum resource that can be used directly only by regulatory agencies. Terminals performing data transmission on unlicensed spectrum need to follow the LBT (Listen Before Talk) mechanism. That is, a terminal using an unlicensed spectrum for transmission needs to perform an LBT procedure before transmitting data, that is, listen for a period of time according to a rule to detect whether the unlicensed spectrum is occupied, and if the unlicensed spectrum is unoccupied, that is, in an idle state, the terminal may occupy the unlicensed spectrum to transmit data. If the unlicensed spectrum is occupied, the terminal needs to back off for a period of time according to the specification and then continues to listen to the channel until the channel listening result is in an idle state, and data transmission can not be performed.

Disclosure of Invention

The embodiment of the application provides a method, a device, equipment and a storage medium for data transmission on an unlicensed spectrum. The technical scheme is as follows:

in one aspect, an embodiment of the present application provides a method for data transmission on an unlicensed spectrum, where the method includes:

when a terminal cannot send first data on a first uplink resource, the terminal determines a second uplink resource according to a second uplink resource configuration, wherein the first uplink resource corresponds to a first uplink resource configuration, and the first uplink resource configuration and the second uplink resource configuration are two different resource configurations of the same uplink BWP (Bandwidth Part);

and the terminal sends the first data on the second uplink resource.

In another aspect, an embodiment of the present application provides a method for transmitting data over an unlicensed spectrum, where the method includes:

when a base station cannot send second data on a first downlink resource, the base station determines a second downlink resource according to a second downlink resource configuration, wherein the first downlink resource corresponds to the first downlink resource configuration, and the first downlink resource configuration and the second downlink resource configuration are two different resource configurations of the same downlink BWP;

and the base station sends the second data on the second downlink resource.

On the other hand, an embodiment of the present application provides a data transmission apparatus on an unlicensed spectrum, which is applied to a terminal, and the apparatus includes:

a resource determining module, configured to determine, when the terminal cannot send first data on a first uplink resource, a second uplink resource according to a second uplink resource configuration, where the first uplink resource corresponds to the first uplink resource configuration, and the first uplink resource configuration and the second uplink resource configuration are two different resource configurations of a same uplink BWP;

and a data sending module, configured to send the first data on the second uplink resource.

In another aspect, an embodiment of the present application provides an apparatus for transmitting data over an unlicensed spectrum, where the apparatus is applied to a base station, and the apparatus includes:

a resource determining module, configured to determine a second downlink resource according to a second downlink resource configuration when the base station cannot send second data on a first downlink resource, where the first downlink resource corresponds to a first downlink resource configuration, and the first downlink resource configuration and the second downlink resource configuration are two different resource configurations of a same downlink BWP

And a data sending module, configured to send the second data on the second downlink resource.

In yet another aspect, embodiments of the present application provide a terminal, which includes a processor, a memory, and a transceiver;

the processor is configured to determine, when first data cannot be sent on a first uplink resource, a second uplink resource according to a second uplink resource configuration, where the first uplink resource corresponds to the first uplink resource configuration, and the first uplink resource configuration and the second uplink resource configuration are two different resource configurations of the same uplink BWP;

the transceiver is configured to transmit the first data on the second uplink resource. In yet another aspect, embodiments herein provide a base station, which includes a processor, a memory, and a transceiver;

the processor is configured to determine a second downlink resource according to a second downlink resource configuration when second data cannot be sent on a first downlink resource, where the first downlink resource corresponds to the first downlink resource configuration, and the first downlink resource configuration and the second downlink resource configuration are two different resource configurations of the same downlink BWP;

the transceiver is configured to transmit the second data on the second downlink resource.

In still another aspect, an embodiment of the present application provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used for being executed by a processor to implement the method for transmitting data on an unlicensed spectrum on a terminal side as described above.

In still another aspect, an embodiment of the present application provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used for being executed by a processor to implement the method for transmitting data over an unlicensed spectrum on a base station side as described above.

The technical scheme provided by the embodiment of the application can bring the following beneficial effects:

when the terminal cannot send the first data on the first uplink resource, the terminal determines the second uplink resource according to the second uplink resource configuration, sends the first data on the second uplink resource, and configures a plurality of uplink resource configurations for the same uplink BWP, which is beneficial to improving the transmission opportunity of the uplink data and improving the diversity gain.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of a network architecture provided by one embodiment of the present application;

fig. 2 is a flowchart of a method for transmitting data over an unlicensed spectrum according to an embodiment of the present application;

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

fig. 4 is a flowchart of a data transmission method according to another embodiment of the present application;

fig. 5 is a flowchart of a method for data transmission over an unlicensed spectrum according to another embodiment of the present application;

fig. 6 is a flowchart of a data transmission method according to another embodiment of the present application;

fig. 7 is a flowchart of a data transmission method according to another embodiment of the present application;

fig. 8 is a block diagram of a data transmission apparatus over an unlicensed spectrum according to an embodiment of the present application;

fig. 9 is a block diagram of a data transmission apparatus over an unlicensed spectrum according to another embodiment of the present application;

fig. 10 is a schematic structural diagram of a terminal provided in an embodiment of the present application;

fig. 11 is a schematic structural diagram of a base station according to an embodiment of the present application.

Detailed Description

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

Before describing the embodiments of the present application, a description will be given of a channel access mechanism referred to in the present application.

The channel access mechanism (category) includes the following:

first (Category 1): the direct transmission mechanism, that is, the LBT is not performed, that is, the device does not need to perform channel detection before transmitting information, and directly transmits information. LBT may also be referred to as a listen and avoid mechanism for enabling efficient sharing of unlicensed spectrum. LBT requires that the Channel be monitored, CCA (Clear Channel Assessment) performed, and transmission performed again with the Channel Clear ensured, before information is transmitted.

Second (Category 2): LBT mechanism without random back-off procedure. Before transmitting information, the device only needs to detect a time granularity, for example, the time granularity may be 25us, if the channel is idle in the time granularity, the device may transmit the information, otherwise, the LBT execution fails, and the device may not transmit the information.

Third (Category 3): a CWS (Contention Window Size) fixed random backoff LBT mechanism, in which a sending device first detects whether a channel corresponding to a beam is idle at a first time granularity, selects a value N of a random number in the first Contention Window if detecting that the channel corresponding to the beam is idle, and performs channel detection with a second time granularity as the time granularity; if the channel corresponding to the beam is idle and the value of the random number is not 0 when the second time granularity is detected, subtracting 1 from the value of the random number, and continuing to perform channel detection by taking the second time granularity as the time granularity; if the channel corresponding to the beam is detected to be busy in the second time granularity, the channel detection is carried out by taking the first time granularity as the time granularity again; if the channel corresponding to the beam is detected to be idle again in the first time granularity and the value of the random number is not 0, subtracting 1 from the value of the random number, and recovering to perform channel detection by taking the second time granularity as the time granularity; the channel is not indicated as idle until the value of the random number is reduced to 0.

Fourth (Category 4): CWS variable random back-off LBT mechanism. I.e., based on Category 3, the sending device may adjust the CWS based on the result of the previous transmission. For example, in the data transmitted within a reference time in the previous transmission process, the ratio of the data that is not correctly received is X, and when X is greater than a threshold, the CWS value is increased. In order to refine parameter setting in the LBT process, four priorities are set in the LBT Category 4, each priority corresponds to different parameter configurations, and data transmission of different service types corresponds to different priorities.

The principle of Category 4 is as follows: the device firstly detects whether a channel corresponding to the wave beam is idle at a first time granularity, if the channel corresponding to the wave beam is idle, the device selects a value N of a random number in a first competition window, and performs channel detection by taking a second time granularity as the time granularity; if the channel corresponding to the beam is idle and the value of the random number is not 0 when the second time granularity is detected, subtracting 1 from the value of the random number, and continuing to perform channel detection by taking the second time granularity as the time granularity; if the channel corresponding to the beam is detected to be busy in the second time granularity, the channel detection is carried out by taking the first time granularity as the time granularity again; if the channel corresponding to the beam is detected to be idle again in the first time granularity and the value of the random number is not 0, subtracting 1 from the value of the random number, and recovering to perform channel detection by taking the second time granularity as the time granularity; the channel is not indicated as idle until the value of the random number is reduced to 0.

For example, if the first time granularity is 16us + M × 9us, and the second time granularity is 9us, it is first detected whether the channel in 16us + M × 9us is idle, if the channel is idle, the value N of the random number is selected in the contention window, and then the detection is performed with 9us as the granularity, if the channel is idle, N-1, and the detection continues with 9us as the granularity; otherwise, carrying out channel detection by taking 16us + M9 us as granularity, when detecting that the channel is idle, N-1, and resuming the detection by taking 9us as granularity until the random number is 0 to indicate that the channel is idle, and the channel can be used.

Wherein the value of M is M in Table-1 and Table-2_pAnd determining that the channel access priority values p are different and the value of M is different. Table-1 shows four types of priority parameter configurations for the downlink LBT Category 4, and table-2 shows four types of priority parameter configurations for the uplink LBT Category 4, which are slightly different in configuration values.

TABLE-1

TABLE-2

Among the four channel access priorities shown in the above tables-1 and-2, the smaller the value of p, the higher the corresponding priority. m is_pThe number of ECCA (Extended Clear Channel) included in a delay time is related to the Channel sensing time for executing Channel access, and each delay time is composed of a fixed 16us duration and m_pECCA, i.e. the first time granularity introduced above. CW_min,pAnd CW_max,pThe minimum contention window value and the maximum contention window value are related to the random channel sensing time in the channel random access process, the CWS in the LBT process is generated between the minimum contention window value and the maximum contention window value, and then the generated contention window CW is calculated from 0 to 0_pThe length of backoff, CW, in the LBT channel detection process is determined by a backoff counter N generated randomly_min,p≤CW _p≤CW _max,pAnd T is_mcot,pThe maximum duration that the LBT Category 4 corresponding to each priority can occupy the channel after being successfully executed is related to the channel priority adopted by the base station, for example, if the priority is 1, the channel is occupied for 2ms at most after the channel sensing is successful. As can be seen from the above table, compared with priorities 1 and 2, the LBT procedure of priorities 3 and 4 is performed at a longer time, so that the chance of obtaining channel access is relatively low, and in order to ensure fairness, the maximum transmission time that can be occupied by data transmission using these two priorities is also relatively long.

For a terminal, data transmission from a base station to the terminal needs to be within the MCOT (Maximum Channel occupancy Time), and if the base station does not Occupy a Channel, that is, outside the MCOT Time, the terminal does not receive scheduling data from the base station to the terminal.

It should be noted that the above four channel access mechanisms are only exemplary descriptions, and as the communication technology evolves, the above four channel access mechanisms may change or a new channel access mechanism is generated, but all of them are applicable to the technical solution described in the present application.

In the following, description is given of the NR-supported CG (Configured Grant):

NR supports two types of CG, CG type1 (configuration grant type 1) and CG type2 (configuration grant type 2).

CG type1 refers to an uplink grant provided by RRC (Radio Resource Control) and stored as a configured uplink grant. I.e. configured by RRC through higher layer signaling.

CG type2 means that an uplink grant is provided by a PDCCH (Physical Downlink Control Channel) and is stored or cleared as a configured uplink grant based on L1 signaling indicating activation or deactivation of the configured uplink grant. That is, DCI (Downlink Control Information) is used to activate and deactivate uplink unlicensed resources, and parameters required by the DCI are configured by a higher layer signaling but are used when the DCI is activated.

The network architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not constitute a limitation to the technical solution provided in the embodiment of the present application, and it can be known by a person skilled in the art that the technical solution provided in the embodiment of the present application is also applicable to similar technical problems along with the evolution of the network architecture and the appearance of a new service scenario.

Referring to fig. 1, a schematic diagram of a network architecture according to an embodiment of the present application is shown. The network architecture may include: a terminal 10 and a base station 20.

The number of terminals 10 is usually plural, and one or more terminals 10 may be distributed in a cell managed by each base station 20. The terminal 10 involved in the embodiments of the present application may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, and various forms of User Equipment (UE), Mobile Stations (MS), terminal devices (terminal device), and so on. For convenience of description, in the embodiments of the present application, the above-mentioned devices are collectively referred to as a terminal.

The base station 20 is a device deployed in an access network to provide a wireless communication function for the terminal 10. The base station 20 may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems using different radio access technologies, the names of devices with base station functionality may differ, for example in a 5G NR system, called nodeb or gNB. The name "base station" may change as communication technology evolves. For convenience of description, in the embodiment of the present application, the above-mentioned apparatuses providing the terminal 10 with the wireless communication function are collectively referred to as a base station 20.

In addition, in the embodiments of the present application, the terms "network" and "system" are generally used in a mixed manner, but those skilled in the art will understand the meaning thereof. The technical scheme described in the embodiment of the application can be applied to a 5G NR system and can also be applied to a subsequent evolution system of the 5G NR system.

The technical solution of the present application will be described below with reference to several exemplary embodiments.

Referring to fig. 2, a flowchart of a method for transmitting data over an unlicensed spectrum according to an embodiment of the present application is shown. The method is applicable to the terminal 10 shown in fig. 1, and may include the following steps:

step 201, when the terminal cannot send the first data on the first uplink resource, the terminal determines the second uplink resource according to the second uplink resource configuration.

In this embodiment of the present application, the first uplink resource corresponds to a first uplink resource configuration, and the first uplink resource configuration and the second uplink resource configuration are two different resource configurations of the same uplink BWP. Illustratively, the first uplink resource configuration and the second uplink resource configuration have different identification information. The identification information of the uplink resource configuration is used for uniquely identifying the uplink resource configuration, and different uplink resource configurations have different identification information.

Optionally, the uplink resource is a CG resource. In the following embodiments, the description is mainly given by taking the uplink resource as the CG resource as an example, but the embodiments of the present application should not be limited thereto. At this time, the first uplink resource configuration may be a first CG resource configuration, the second uplink resource configuration may be a second CG resource configuration, the first CG resource configuration may be represented as CG #1, the second CG resource configuration may be represented as CG #2, and CG #1 and CG #2 are two different resource configurations of the same uplink BWP. The first CG resource may be a resource belonging to a first CG resource configuration and the second CG resource may be a resource belonging to a second CG resource configuration.

The base station configures a plurality of CG resource configurations for an uplink BWP, the plurality of CG resource configurations can be activated simultaneously, each CG resource configuration corresponds to respective identification information, and the identification information of different CG resource configurations is different. The identification information of the CG resource configuration may be a CG index.

Illustratively, the terminal cannot transmit the first data on the first uplink resource, including any one of the following situations:

the first case: the terminal executes LBT on the first uplink resource to detect that the channel is busy, so that the first data cannot be sent on the first uplink resource. LBT requires that the channel be sensed before data is transmitted, and if the channel is detected to be busy, the terminal cannot send data.

The second case: the terminal determines that there is another uplink transmission on the first uplink resource that overlaps or partially overlaps in the time domain, and the terminal determines to transmit the uplink transmission preferentially, resulting in that the first data cannot be transmitted on the first uplink resource. When the uplink transmission and the first data both need to occupy the first uplink resource for transmission and overlap or partially overlap in the time domain, if the priority of the uplink transmission is higher than that of the first data, the terminal cannot send the first data on the first uplink resource.

The first data is data that is ready to be transmitted in the first uplink resource but has not yet been transmitted. The first data may be a Transport Block (TB) to be transmitted.

Step 202, the terminal sends the first data on the second uplink resource.

When the uplink BWP supports multiple CG resource configurations, the multiple CG resource configurations may be used to improve transmission opportunities, and when the terminal cannot initiate data transmission on the first CG resource corresponding to the first CG resource configuration, the terminal may select a CG resource corresponding to another CG resource configuration (i.e. the second CG resource configuration) to transmit the data.

In addition, after determining the second uplink resource, the terminal may perform LBT on the second uplink resource, and if performing LBT on the second uplink resource detects that the channel is idle, the terminal may send the first data on the second uplink resource.

Accordingly, the base station receives the first data transmitted on the second uplink resource.

To sum up, in the technical solution provided in this embodiment, when the terminal cannot send the first data on the first uplink resource, the terminal determines the second uplink resource according to the second uplink resource configuration, and sends the first data on the second uplink resource, and configures multiple uplink resource configurations for the same uplink BWP, which is beneficial to improving the transmission opportunity of the uplink data and improving the diversity gain.

In one example, as shown in fig. 3, the terminal may transmit the first data on the second uplink resource by:

step 301, the terminal selects the first HARQ process as the HARQ process corresponding to the second uplink resource according to the maximum HARQ (Hybrid Automatic Repeat Request) process number corresponding to the second uplink resource configuration.

In this embodiment of the present application, the first HARQ process is an HARQ process corresponding to the first uplink resource, and the first data is stored in the buffer of the first HARQ process. In this embodiment, the buffer of the HARQ process refers to a buffer corresponding to the HARQ process, and is a buffer for storing data related to the HARQ process.

When the terminal executes uplink transmission on a first CG resource corresponding to the first CG resource configuration, the terminal selects one HARQ process (i.e. a first HARQ process) corresponding to the first CG resource based on the implementation, where the first HARQ process belongs to one of the HARQ process sets corresponding to the first CG resource configuration. Optionally, the base station configures a maximum HARQ process number (the maximum available HARQ process number) for the first CG resource configuration, and the terminal selects the first HARQ process as the HARQ process corresponding to the first CG resource according to the maximum HARQ process number corresponding to the first CG resource configuration. For example, the terminal selects the first HARQ process in the process number interval of [0, the maximum HARQ process number-1 corresponding to the first CG resource configuration ]. Assuming that the maximum HARQ process number corresponding to the first CG resource configuration is 6, the terminal may select the first HARQ process between [0,5], e.g., the terminal may determine HARQ process 4 as the first HARQ process. Then, the terminal may put the first data to be transmitted into the buffer corresponding to the first HARQ process, and wait for transmission.

In this embodiment, the two CG resource configurations of the uplink BWP have the same HARQ process set, and still taking the above example as an example, the HARQ process sets of CG #1 and CG #2 are HARQ processes 0-8. Optionally, the maximum HARQ process number corresponding to the second uplink resource configuration is the same as the maximum HARQ process number corresponding to the first uplink resource configuration. For example, the maximum HARQ process number corresponding to CG #2 is the same as the maximum HARQ process number corresponding to CG #1, and assuming that the maximum HARQ process numbers corresponding to CG #2 and CG #1 are both 6, the available HARQ process numbers corresponding to CG #2 and CG #1 are both 0-5. Optionally, the maximum HARQ process number corresponding to the second uplink resource configuration is different from the maximum HARQ process number corresponding to the first uplink resource configuration. For example, the maximum HARQ process number corresponding to CG #2 is different from the maximum HARQ process number corresponding to CG #1, and assuming that the maximum HARQ process number corresponding to CG #2 is 5 and the maximum HARQ process number corresponding to CG #1 is 6, the available HARQ process numbers corresponding to CG #2 are 0-4 and the available HARQ process numbers corresponding to CG #1 are 0-5.

In this embodiment, if the available HARQ process number corresponding to CG #2 includes the first HARQ process, the terminal preferentially selects the first HARQ process as the HARQ process corresponding to the second CG resource.

Step 302, the terminal sends the first data stored in the buffer of the first HARQ process on the second uplink resource.

Because the HARQ process corresponding to the second CG resource is the same as the HARQ process corresponding to the first CG resource and is the first HARQ process, the terminal may directly send the first data stored in the cache of the first HARQ process on the second CG resource.

For example, the terminal may first detect whether a first HARQ process is available for a second uplink resource, and if the first HARQ process is available for the second uplink resource, the terminal may select the first HARQ process as a HARQ process corresponding to the second uplink resource, and then send first data stored in a buffer of the first HARQ process on the second uplink resource; if the first HARQ process is not available for the second uplink resource, the terminal may perform the following procedure: selecting a second HARQ process as the HARQ process corresponding to the second uplink resource according to the maximum HARQ process number corresponding to the second uplink resource configuration; moving the first data from the cache of the first HARQ process to the cache of the second HARQ process; and sending the first data stored in the buffer of the second HARQ process on the second uplink resource.

When the available HARQ process number corresponding to CG #2 does not include the first HARQ process, the first HARQ process is not available for the second CG resource. For example, the process number of the first HARQ process is 5, the maximum HARQ process number corresponding to the second CG resource configuration is 5, the available HARQ process number corresponding to the CG #2 is 0-4, and the HARQ process 5 is unavailable for the second CG resource. At this time, the terminal may select one HARQ process from 0 to 4 as the HARQ process corresponding to the second CG resource, for example, select HARQ process 2 as the HARQ process corresponding to the second CG resource. And the terminal moves the first data from the cache of the HARQ process 5 to the cache of the HARQ process 2, and transmits the first data stored in the cache of the HARQ process 2 on the second CG resource.

In summary, in the technical solution provided in this embodiment of the present application, the HARQ process corresponding to the first uplink resource is selected as the HARQ process corresponding to the second uplink resource, so that a data moving process is omitted, and processing overhead of the terminal can be reduced.

In another example, the first uplink resource configuration corresponds to a first set of HARQ processes and the second uplink resource configuration corresponds to a second set of HARQ processes, the first and second sets of HARQ processes being two different sets of HARQ processes. As shown in fig. 4, the terminal transmits the first data on the second uplink resource by:

step 401, the terminal selects a second HARQ process from the second HARQ process set as a HARQ process corresponding to the second uplink resource.

In this embodiment, the second HARQ process is different from the first HARQ process, the first HARQ process is a HARQ process corresponding to the first uplink resource selected from the first HARQ process set, and the cache of the first HARQ process stores the first data.

When the terminal executes uplink transmission on a first CG resource corresponding to the first CG resource configuration, the terminal selects one HARQ process (i.e. a first HARQ process) corresponding to the first CG resource based on the implementation, where the first HARQ process belongs to one of the HARQ process sets corresponding to the first CG resource configuration. Assuming that the first HARQ process set corresponding to the first CG resource allocation includes HARQ processes 0 to 5, the terminal may select HARQ process 2 from HARQ processes 0 to 5 as the first HARQ process. Then, the terminal may put the first data to be transmitted into the buffer corresponding to the first HARQ process, and wait for transmission.

Illustratively, the base station configures different HARQ offsets for CG #1 and CG #2, and may ensure that CG resources corresponding to CG #1 and CG #2 have different HARQ processes, for example, the HARQ offset configured for CG #1 is 0, the HARQ offset configured for CG #2 is 4, at this time, the HARQ process set corresponding to CG #1 includes HARQ processes 0 to 3, and the HARQ process set corresponding to CG #2 includes HARQ processes 4 to 7.

Step 402, the terminal moves the first data from the buffer of the first HARQ process to the buffer of the second HARQ process.

Still taking the above example as an example, the HARQ process set corresponding to CG #1 includes HARQ processes 0 to 3, the HARQ process set corresponding to CG #2 includes HARQ processes 4 to 7, assuming that the first CG resource corresponds to HARQ process 2, the terminal selects HARQ process 5 from HARQ processes 4 to 7 as the HARQ process corresponding to the second CG resource, and the terminal moves the first data from the cache of HARQ process 2 to the cache of HARQ process 5.

Optionally, after the terminal moves the first data from the buffer of the first HARQ process to the buffer of the second HARQ process, the buffer of the first HARQ process is emptied.

In step 403, the terminal sends the first data stored in the buffer of the second HARQ process on the second uplink resource.

Still taking the above example as an example, the terminal transmits the first data stored in the buffer of the HARQ process 5 on the second CG resource.

Exemplarily, if the first HARQ process set and the second HARQ process set include at least one same HARQ process, and the at least one same HARQ process includes a first HARQ process, the terminal selects the first HARQ process as a HARQ process corresponding to the second uplink resource; and the terminal sends the first data stored in the buffer of the first HARQ process on the second uplink resource. Exemplarily, assuming that the HARQ process set corresponding to CG #1 includes HARQ processes 0 to 4, the HARQ process set corresponding to CG #2 includes HARQ processes 4 to 8, and both the HARQ process sets include HARQ process 4, if the HARQ process corresponding to the first CG resource is HARQ process 4, the terminal preferentially selects HARQ process 4 from the HARQ process set corresponding to CG #2 as the HARQ process corresponding to the second CG resource, so that the terminal may directly send the first data stored in the cache of HARQ process 4 on the second CG resource without moving the data.

Referring to fig. 5, a flowchart of a method for transmitting data over an unlicensed spectrum according to another embodiment of the present application is shown. The method can be applied to the base station 20 shown in fig. 1, and the method can include the following steps:

step 501, when the base station cannot transmit the second data on the first downlink resource, the base station determines the second downlink resource according to the second downlink resource configuration.

In this embodiment of the present application, the first downlink resource corresponds to a first downlink resource configuration, and the first downlink resource configuration and the second downlink resource configuration are two different resource configurations of the same downlink BWP. Illustratively, the first downlink resource configuration and the second downlink resource configuration have different identification information. The identification information of the downlink resource configuration is used for uniquely identifying the downlink resource configuration, and different downlink resource configurations have different identification information.

Alternatively, the downlink resource is an SPS (Semi-Persistent Scheduling) resource. In the following embodiments, the following resources are mainly described as SPS resources, but the embodiments of the present application should not be limited thereto. At this time, the first downlink resource configuration may be a first SPS resource configuration, the second downlink resource configuration may be a second SPS resource configuration, the first SPS resource configuration may be denoted as SPS #1, the second SPS resource configuration may be denoted as SPS #2, SPS #1 and SPS #2 are two different resource configurations of the same downlink BWP, the first SPS resource may be a resource belonging to the first SPS resource configuration, and the second SPS resource may be a resource belonging to the second SPS resource configuration.

The base station configures a plurality of SPS resource configurations for one downlink BWP, wherein the SPS resource configurations can be activated simultaneously, each SPS resource configuration corresponds to respective identification information, and the identification information of different SPS resource configurations is different. The identification information of the SPS resource configuration may be an SPS index.

Illustratively, the base station cannot transmit the second data on the first downlink resource, which may include any one of the following situations:

the first case: the base station performs LBT on the first downlink resource to detect that the channel is busy, resulting in that the second data cannot be transmitted on the first downlink resource. LBT requires that the channel be sensed before data is transmitted, and if the channel is detected to be busy, the base station cannot send data.

The second case: the base station determines that there is another downlink transmission on the first downlink resource that overlaps or partially overlaps in the time domain, and the base station decides to transmit the downlink transmission preferentially, resulting in that the second data cannot be transmitted on the first downlink resource. When the downlink transmission and the second data both need to occupy the first downlink resource for transmission and overlap or partially overlap in the time domain, if the priority of the downlink transmission is higher than that of the second data, the base station cannot send the second data on the first downlink resource.

The second data is data that is ready to be transmitted on the first downlink resource but has not yet been transmitted. The second data may be a Transport Block (TB) to be transmitted.

Step 502, the base station sends second data on the second downlink resource.

When the downlink BWP supports multiple SPS resource configurations, the multiple SPS resource configurations may be used to improve transmission opportunities, and when the base station fails to initiate data transmission on the first SPS resource corresponding to the first SPS resource configuration, the base station may select another SPS resource corresponding to the SPS resource configuration (i.e., the second SPS resource configuration) to transmit the data.

In addition, the base station may perform LBT on the second downlink resource after determining the second downlink resource, and if performing LBT on the second downlink resource detects that the channel is idle, the base station may transmit second data on the second downlink resource.

Accordingly, the terminal receives the second data transmitted on the second downlink resource.

To sum up, in the technical solution provided in this embodiment, when the base station cannot send the second data on the first downlink resource, the base station determines the second downlink resource according to the second downlink resource configuration, sends the second data on the second downlink resource, and configures multiple downlink resource configurations by maintaining the same downlink BWP, which is beneficial to improving transmission opportunities of downlink data and improving diversity gain.

In one example, as shown in fig. 6, the base station transmits the second data on the second downlink resource by:

step 601, the base station configures a corresponding maximum HARQ process number according to the second downlink resource, and selects a third HARQ process as an HARQ process corresponding to the second downlink resource.

In this embodiment of the application, the third HARQ process is an HARQ process corresponding to the first downlink resource, and second data is stored in a cache of the third HARQ process.

When the base station executes downlink transmission on a first SPS resource corresponding to the first SPS resource configuration, the base station selects one HARQ process (namely, a third HARQ process) corresponding to the first SPS resource based on implementation, wherein the third HARQ process belongs to one of the HARQ process sets corresponding to the first SPS resource configuration. Optionally, the base station configures a maximum HARQ process number (the maximum available HARQ process number) for the first SPS resource, and selects the third HARQ process as the HARQ process corresponding to the first SPS resource according to the maximum HARQ process number corresponding to the first SPS resource configuration. For example, the base station selects the third HARQ process in the process number interval of [0, maximum HARQ process number-1 corresponding to the first SPS resource configuration ]. Assuming that the maximum HARQ process number corresponding to the first SPS resource configuration is 6, the base station may select the third HARQ process between [0 and 5], for example, the base station may determine HARQ process 4 as the third HARQ process, and the buffer of process 4 stores the second data. Then, the base station may put the second data to be transmitted into the buffer corresponding to the third HARQ process, and wait for transmission.

In this embodiment, the two SPS resource configurations of the downlink BWP have the same HARQ process set, and still taking the above example as an example, the HARQ process sets of SPS #1 and SPS #2 are HARQ processes 0 to 8. Optionally, the maximum HARQ process number corresponding to the second downlink resource configuration is the same as the maximum HARQ process number corresponding to the first downlink resource configuration. For example, the maximum HARQ process number corresponding to SPS #2 is the same as the maximum HARQ process number corresponding to SPS #1, and if the maximum HARQ process numbers corresponding to SPS #1 and SPS #2 are both 6, the available HARQ process numbers corresponding to SPS #1 and SPS #2 are both 0 to 5. Optionally, the maximum HARQ process number corresponding to the second downlink resource configuration is different from the maximum HARQ process number corresponding to the first downlink resource configuration. For example, the maximum HARQ process number corresponding to SPS #2 is different from the maximum HARQ process number corresponding to SPS #1, and assuming that the maximum HARQ process number corresponding to SPS #2 is 5 and the maximum HARQ process number corresponding to SPS #1 is 6, the available HARQ process numbers corresponding to SPS #2 are 0 to 4 and the available HARQ process numbers corresponding to SPS #1 are 0 to 5.

In this embodiment, if the available HARQ process number corresponding to SPS #2 includes the third HARQ process, the base station preferentially selects the third HARQ process as the HARQ process corresponding to the second SPS resource.

Step 602, the base station sends the second data stored in the buffer of the third HARQ process on the second downlink resource.

Since the HARQ process corresponding to the second SPS resource is the third HARQ process, as the HARQ process corresponding to the first SPS resource, the base station may directly transmit the second data stored in the buffer of the third HARQ process on the second SPS resource.

For example, the base station may first detect whether a third HARQ process is available for the second downlink resource, and if the third HARQ process is available for the second downlink resource, the base station may select the third HARQ process as an HARQ process corresponding to the second downlink resource, and then send second data stored in a buffer of the third HARQ process on the second downlink resource; if the third HARQ process is not available for the second downlink resource, the base station may perform the following procedures: selecting a fourth HARQ process as the HARQ process corresponding to the second downlink resource according to the maximum HARQ process number corresponding to the second downlink resource configuration; moving the second data from the buffer of the third HARQ process to the buffer of the fourth HARQ process; and sending the second data stored in the buffer of the fourth HARQ process on the second downlink resource.

When the available HARQ process number corresponding to SPS #2 does not include the third HARQ process, the third HARQ process is not available for the second SPS resources. For example, the process number of the third HARQ process is 5, the maximum HARQ process number corresponding to the second SPS resource configuration is 5, the available HARQ process number corresponding to SPS #2 is 0-4, and HARQ process 5 is unavailable for the second SPS resource. At this time, the base station may select one HARQ process from 0 to 4 as the HARQ process corresponding to the second SPS resource, for example, select HARQ process 2 as the HARQ process corresponding to the second SPS resource. And the base station moves the second data from the buffer of the HARQ process 5 to the buffer of the HARQ process 2, and transmits the second data stored in the buffer of the HARQ process 2 on the second SPS resource.

In summary, in the technical solution provided in this embodiment of the present application, the HARQ process corresponding to the first downlink resource is selected as the HARQ process corresponding to the second downlink resource, so that a data moving process is omitted, and processing overhead of the base station can be reduced.

In another example, the first downlink resource configuration corresponds to a third set of HARQ processes, the second downlink resource configuration corresponds to a fourth set of HARQ processes, and the third and fourth sets of HARQ processes are two different sets of HARQ processes. As shown in fig. 7, the base station transmits the second data on the second downlink resource by:

step 701, the base station selects a fourth HARQ process from the fourth HARQ process set as an HARQ process corresponding to the second downlink resource.

In this embodiment, the fourth HARQ process is different from the third HARQ process, the third HARQ process is a HARQ process corresponding to the first downlink resource selected from the third HARQ process set, and the cache of the third HARQ process stores the second data.

When the base station executes uplink transmission on the first SPS resource corresponding to the first SPS resource configuration, the base station selects one HARQ process (namely, a third HARQ process) corresponding to the first SPS resource based on implementation, wherein the third HARQ process belongs to one of the HARQ process sets corresponding to the first SPS resource configuration. Assuming that the third HARQ process set corresponding to the first SPS resource configuration includes HARQ processes 0 to 5, the base station may select HARQ process 2 from HARQ processes 0 to 5 as the third HARQ process. Then, the base station may put the second data to be transmitted into the buffer corresponding to the third HARQ process, and wait for transmission.

Illustratively, the base station configures different HARQ offsets for SPS #1 and SPS #2, and may ensure that SPS resources corresponding to SPS #1 and SPS #2 have different HARQ processes, for example, the HARQ offset configured for SPS #1 is 0, and the HARQ offset configured for SPS #2 is 4, at this time, the HARQ process set corresponding to SPS #1 includes HARQ processes 0 to 3, and the HARQ process set corresponding to SPS #2 includes HARQ processes 4 to 7.

In step 702, the base station moves the second data from the buffer of the third HARQ process to the buffer of the fourth HARQ process.

Still taking the above example as an example, the HARQ process set corresponding to SPS #1 includes HARQ processes 0 to 3, the HARQ process set corresponding to SPS #2 includes HARQ processes 4 to 7, assuming that the first SPS resource corresponds to HARQ process 2, the base station selects HARQ process 5 from HARQ processes 4 to 7 as the HARQ process corresponding to the second SPS resource, and the base station moves the second data from the buffer of HARQ process 2 to the buffer of HARQ process 5.

Optionally, after the base station moves the second data from the buffer of the third HARQ process to the buffer of the fourth HARQ process, the buffer of the third HARQ process is emptied.

In step 703, the base station sends the second data stored in the buffer of the fourth HARQ process on the second downlink resource.

Still taking the above example as an example, the base station transmits the second data stored in the buffer of HARQ process 5 on the second SPS resource.

Optionally, if the third HARQ process set and the fourth HARQ process set include at least one same HARQ process, and the at least one same HARQ process includes a third HARQ process, the base station selects the third HARQ process as an HARQ process corresponding to the second downlink resource; and the base station sends the second data stored in the buffer of the third HARQ process on the second downlink resource. Exemplarily, assuming that the HARQ process set corresponding to SPS #1 includes HARQ processes 0 to 4, the HARQ process set corresponding to SPS #2 includes HARQ processes 4 to 8, and both HARQ process sets include HARQ process 4, if the HARQ process corresponding to the first SPS resource is HARQ process 4, the base station preferentially selects HARQ process 4 from the HARQ process set corresponding to SPS #2 as the HARQ process corresponding to the second SPS resource, so that the base station can directly send the second data stored in the buffer of HARQ process 4 on the second SPS resource without moving the data.

The technical solutions introduced in the above embodiments can be summarized as follows:

supporting multiple active CG/SPS in NR-U (Supporting multiple active CG/SPS resource configuration in NR-U)

It's acquired to support multiple CGs per UL BWP for NR-U as a solo acquired in IIoT work item (IIOT work item also agrees that UL BWP for each NR-U supports multiple CG.)

In general, the framework developed In IIoT for supporting multiple CGs per UL BWP with multiple CGs per UL BWP no specific issues to handle (In general, the framework developed In IIoT for supporting multiple CGs per UL BWP may also be applied to NR-U, and should not have specific problems to handle.)

We believe that We also consider how the resource distribution CG is one of the active communication products to the LBresource CG, and how the resource distribution CG is one of the active communication products to the local communication nodes CG, and how the resource distribution CG is one of the active communication products to the LBresource CG, the main motivation for NR-U to support multiple CGs per UL BWP configuration is to improve the transmission opportunities, either in the time domain or in the frequency domain. To achieve this, we should handle the case where the UE fails to transmit on a CG resource belonging to one of the activated CG configurations due to LBT failure, and should allow it to make another attempt using another available CG resource that may belong to another CG configuration. In other words, the UE may generate a TB to be transmitted due to LBT failure in one of the CGs, and then if another CG resource belonging to a different CG configuration is available (i.e., LBT success), the TB to be transmitted may be allowed to be transmitted using the CG resource. )

Proposal 1-UE can be allowed to use CG resources from allowed to user a CG configuration to transmit the pending TB product to LBT failure (scheme 1: UE can be allowed to use CG resources belonging to different CG configurations to transmit TB not transmitted due to LBT failure.)

In previous NR-U distribution, the similar case has been used with the same HARQ process, as well-acquired In RAN2#107 meeting similar cases have been discussed, which leads to the conclusion that the TB can be transmitted using another available CG resource with the same HARQ process, as we agreed at RAN2#107 meeting, as follows:)

On LBT failure at TX On CG, the UE transmitting the pending TB using same HARQ process in a CG resource (when LBT at TX On CG fails), and the UE transmitting the pending TB using same HARQ process in the CG resource

Configuring multiple CG configurations case, the configuration of the active be differential HARQ process set with differential HARQ process set, i.e. the it's achieved by configuring different CG configuration set of the activated CG configured HARQ process set, as acquired in RAN2#107bis recording as follows, as in RAN2#107bis conference, as shown in the following: configuring different HARQ process offset for each activated CG configuration set, as in RAN2#107bis conference)

1. R2 classes which HARQ offset parameter is explicit configured by the network for each CG/SPS configuration (R2 assumes that the network explicitly configures a HARQ offset parameter for each CG/SPS configuration.)

2. For CG, HARQ Process ID [ [ floor (CURRENT _ symbol/periodicity) ] modulo HARQ-Processes + HARQ-procID-offset ] (For CG, HRRQ Process ID ═ rounding down (identification of symbol where CG resource is located/period of CG resource) modulo HARQ Process number + HARQ Process offset.)

According to the estimates from IIoT session, it means UE can not select the same HARQ process ID to transmit the pending transmission of a HARQ process in NR-U case, (According to the protocol from IIoT session, it means that when UE uses available resources belonging to different CG configurations, UE cannot select the same HARQ process ID to transmit the pending transmission TB. of a HARQ process-this may require further discussion in NR-U case.)

Observation 1-For NR-U with multiple CG configurations, UE can not use the same HRAQ process to transmit the pending TB on other differential CG configuration to LBT failure a CG resource (For NR-U with multiple CG configurations, opinion 1. due to LBT failure on CG resources, UE can not use the same HRAQ process to transmit TB to be transmitted on another different CG configuration.)

In general, there are two solutions:)

Solution 1: we follow the principle of private mobile network acquisition in NR-U session, i.e., on LBT failure establishment transmission a CG resource, the UE transmits the sending TB using the same HARQ process event if the CG resource allocation is not consistent with the other configuration, the network configuration the HARQ process set for the transmission CG configuration in NR-U. We actually allow the same HARQ process to be set for different CG configurations in the NR-U. In other words, the network may configure the corresponding same HRAQ process IDs for different CGs in the NR-U, and selection of HARQ process IDs for each CG resource is implemented by the UE. ) Solution 2. the resource is configured with the private use HARQ process ID, i.e., the by-configuration a HARQ offset for the by-configuration CG configuration, the by-configuration a HARQ offset for the by-UE can be configured with the by-configuration a by-configuration for the by-UE can be configured with the by-configuration a by-configuration for the by-configuration a UE. We follow the agreed principle in IIoT sessions, i.e. different CG configurations cannot use the same HARQ process ID, i.e. by configuring a corresponding HARQ offset for each CG. Doing so would require introducing another mechanism for NR-U so that the UE can still use a different HARQ process to transmit the TB to be transmitted when the CG resources belong to another different CG configuration. This means a little bit that the UE needs to move the stored pending TB from one HARQ buffer to another HARQ buffer. This is possible but is not ideal from the complexity of the MAC specification. )

Proposal 2-For multiple CGs in NR-U, UE can transmit the pending TB using the same HARQ process while the CG resource is being allocated to another differential CG configuration. (suggestion 2: For multiple CGs in NR-U, UE can use the same HARQ process to transmit TB when the CG resource belongs to another different CG configuration.)

The re area needle other suspensions contained in IIoT where the supporting of multiple CGs per UL BWP, and the same of the area co-pelletized as following RAN2#107bis meeting (when discussing in IIoT that each UL BWP supports multiple CGs, There are other problems, some of which are duplicated from RAN2#107bis meeting)

1. Introduce SPS/CG index to identity each SPS/CG allocations, i.e., as in Rel-15LTE (the SPS/CG index is introduced to identify each SPS/CG of a plurality of SPS/CG configurations, i.e., as in Rel-15 LTE.)

2. The association between The "state" (for joint release of DCI) and The CG configuration(s) for type-2 CG is configured via RRC message

3. The as in Rel-15LTE (Each CG configuration is always independently configured, as in Rel-15 LTE.)

4. Support simultaneoustype 1&2 CG configurations in a BWP. (Support for Type1 and Type2 CG configurations in BWP.)

5. CG properties of any integer of one slot (FFS if we even lower, e.g.2 symb,7 symb) below a maximum value of short supported FFS on the maximum value of integer N (FFS if further reduced, e.g.2 symb,7 symb)

6. Intrareduce a new configuration MAC CE format in Rel-16, while reflections the configuration of multiple configured grams configuration (a new confirmation MAC CE format is introduced in Rel-16, which reflects the confirmation of multiple configuration authorization configurations)

7. A Single LCH can map to multiple CG configurations (A.C.)

8. Multiple LCHs can be map to a single CG configuration (Multiple LCHs can be mapped to a single CG configuration.)

We three all the above conclusions can be applied to the NR-U if proposal2 is confirmed, there is no need to configure a transmission HARQ process offset for each configured CG, because HARQ process ID is selected by the UE even if the resource belongs to different configurations)

Propusal 3-All of the consensurations of the associated in IIoT for supporting multiple CGs can be applied to NR-U, except that CG configuration is configured with a HARQ process offset All agreed to in IIoT

For the downlink SPS configuration, it's allowed aligned in IIoT this UE may support simultaneous uplink of multiple CGs in NR-U is to uplink of multiple SPS configuration, it's allowed to be aligned to the downlink transmission of multiple SPS transport of multiple CG For NR-U is also added to the downlink of multiple SPS configuration For each downlink of SPS support of multiple SPS transport of multiple SPS configuration I IIoT this UE (For simultaneous uplink of multiple SPS configuration of SPS support of multiple SPS transport of multiple CG, it is also applicable to downlink transmission. Therefore, it is considered feasible to support multiple SPS configurations per BWP for NR-U to increase downlink transmission opportunities. Similar to the uplink CG, all conclusions in IIoT can be applied to NR-U, except that the network does not need to configure a corresponding HARQ process offset for each SPS. )

Propusal 4-NR-U can support multiple simultaneous activated 8 SPS configurations per BWP as acquired in IIoT (suggest 4: NR-U can support 8 SPS configurations agreed in IIoT for each BWP to be activated at the same time.)

Referring to fig. 8, a block diagram of a data transmission apparatus over an unlicensed spectrum according to an embodiment of the present application is shown. The apparatus has a function of implementing the above method example at the terminal side, and the function may be implemented by hardware, or may be implemented by hardware executing corresponding software. The apparatus may be the terminal described above, or may be provided in the terminal. As shown in fig. 8, the apparatus 800 may include: a resource determination module 810 and a data transmission module 820.

A resource determining module 810, configured to determine, when the terminal cannot send the first data on the first uplink resource, a second uplink resource according to a second uplink resource configuration, where the first uplink resource corresponds to the first uplink resource configuration, and the first uplink resource configuration and the second uplink resource configuration are two different resource configurations of the same uplink BWP.

A data sending module 820, configured to send the first data on the second uplink resource.

To sum up, in the technical solution provided in this embodiment, when the terminal cannot send the first data on the first uplink resource, the terminal determines the second uplink resource according to the second uplink resource configuration, and sends the first data on the second uplink resource, and configures multiple uplink resource configurations for the same uplink BWP, which is beneficial to improving the transmission opportunity of the uplink data and improving the diversity gain.

Optionally, the data sending module 820 is configured to:

selecting a first HARQ process as the HARQ process corresponding to the second uplink resource according to the maximum HARQ process number corresponding to the second uplink resource configuration, wherein the first HARQ process is the HARQ process corresponding to the first uplink resource, and the first data is stored in the cache of the first HARQ process;

and sending the first data stored in the buffer of the first HARQ process on the second uplink resource.

Optionally, the maximum HARQ process number corresponding to the second uplink resource configuration is the same as the maximum HARQ process number corresponding to the first uplink resource configuration;

alternatively, the first and second electrodes may be,

and the maximum HARQ process number corresponding to the second uplink resource configuration is different from the maximum HARQ process number corresponding to the first uplink resource configuration.

Optionally, the data sending module 820 is further configured to:

and if the first HARQ process is unavailable for the second uplink resource, selecting the second HARQ process as the HARQ process corresponding to the second uplink resource according to the maximum HARQ process number corresponding to the second uplink resource configuration.

And moving the first data from the buffer of the first HARQ process to the buffer of the second HARQ process.

And sending the first data stored in the buffer of the second HARQ process on the second uplink resource.

Optionally, the first uplink resource configuration corresponds to a first HARQ process set, and the second uplink resource configuration corresponds to a second HARQ process set;

the data sending module 820 is configured to:

selecting a second HARQ process from the second HARQ process set as a HARQ process corresponding to the second uplink resource, wherein the second HARQ process is different from a first HARQ process, the first HARQ process is the HARQ process corresponding to the first uplink resource selected from the first HARQ process set, and the first data is stored in a cache of the first HARQ process;

moving the first data from the cache of the first HARQ process to the cache of the second HARQ process;

and sending the first data stored in the buffer of the second HARQ process on the second uplink resource.

Optionally, the apparatus 800 further comprises: a buffer emptying module (not shown).

And the buffer emptying module is used for emptying the buffer of the first HARQ process.

Optionally, the data sending module 820 is further configured to:

and if the first HARQ process set and the second HARQ process set comprise at least one same HARQ process, and the at least one same HARQ process comprises the first HARQ process, selecting the first HARQ process as the HARQ process corresponding to the second uplink resource.

And sending the first data stored in the buffer of the first HARQ process on the second uplink resource.

Optionally, the terminal cannot send the first data on the first uplink resource, including any one of the following situations:

the terminal executes LBT on the first uplink resource to detect that a channel is busy, so that the first data cannot be sent on the first uplink resource;

the terminal determines that there is another uplink transmission on the first uplink resource that overlaps or partially overlaps in the time domain, and determines to transmit the uplink transmission preferentially, resulting in failure to send the first data on the first uplink resource.

Optionally, the first uplink resource configuration and the second uplink resource configuration have different identification information.

Optionally, the apparatus further comprises: a data receiving module (not shown in the figure).

A data receiving module, configured to receive second data sent on a second downlink resource;

the second downlink resource is determined according to a second downlink resource configuration when the second data cannot be sent on the first downlink resource, where the first downlink resource corresponds to the first downlink resource configuration, and the first downlink resource configuration and the second downlink resource configuration are two different resource configurations of the same downlink BWP.

Referring to fig. 9, a block diagram of a data transmission apparatus over an unlicensed spectrum according to another embodiment of the present application is shown. The device has the function of realizing the method example of the base station side, and the function can be realized by hardware or by executing corresponding software by hardware. The apparatus may be a base station as described above, or may be provided in a base station. As shown in fig. 9, the apparatus 900 may include: a resource determination module 910 and a data transmission module 920.

A resource determining module 910, configured to determine, when the base station cannot send second data on a first downlink resource, a second downlink resource according to a second downlink resource configuration, where the first downlink resource corresponds to a first downlink resource configuration, and the first downlink resource configuration and the second downlink resource configuration are two different resource configurations of a same downlink BWP.

A data sending module 920, configured to send the second data on the second downlink resource.

To sum up, in the technical solution provided in this embodiment, when the base station cannot send the second data on the first downlink resource, the base station determines the second downlink resource according to the second downlink resource configuration, sends the second data on the second downlink resource, and configures multiple downlink resource configurations by maintaining the same downlink BWP, which is beneficial to improving transmission opportunities of downlink data and improving diversity gain.

Optionally, the data sending module 920 is configured to:

selecting a third HARQ process as the HARQ process corresponding to the second downlink resource according to the maximum HARQ process number corresponding to the second downlink resource configuration, wherein the third HARQ process is the HARQ process corresponding to the first downlink resource, and the second data is stored in a cache of the third HARQ process;

and sending the second data stored in the buffer of the third HARQ process on the second downlink resource.

Optionally, the maximum HARQ process number corresponding to the second downlink resource configuration is the same as the maximum HARQ process number corresponding to the first downlink resource configuration;

alternatively, the first and second electrodes may be,

the maximum HARQ process number corresponding to the second downlink resource configuration is different from the maximum HARQ process number corresponding to the first downlink resource configuration.

Optionally, the data sending module is further configured to: ,

and if the third HARQ process is unavailable for the second downlink resource, selecting a fourth HARQ process as the HARQ process corresponding to the second downlink resource according to the maximum HARQ process number corresponding to the second downlink resource configuration.

And moving the second data from the buffer of the third HARQ process to the buffer of the fourth HARQ process.

And sending the second data stored in the buffer of the fourth HARQ process on the second downlink resource.

Optionally, the first downlink resource configuration corresponds to a third HARQ process set, and the second downlink resource configuration corresponds to a fourth HARQ process set;

the data sending module 920 is configured to:

selecting a fourth HARQ process from the fourth HARQ process set as the HARQ process corresponding to the second downlink resource, wherein the fourth HARQ process is different from a third HARQ process, the third HARQ process is the HARQ process corresponding to the first downlink resource selected from the third HARQ process set, and the second data is stored in a cache of the third HARQ process;

moving the second data from the buffer of the third HARQ process to the buffer of the fourth HARQ process;

and sending the second data stored in the buffer of the fourth HARQ process on the second downlink resource.

Optionally, the apparatus 900 further comprises: a buffer emptying module (not shown).

And the buffer emptying module is used for emptying the buffer of the third HARQ process.

Optionally, the data sending module 920 is further configured to:

if the third HARQ process set and the fourth HARQ process set comprise at least one same HARQ process, and the at least one same HARQ process comprises the third HARQ process, selecting the third HARQ process as the HARQ process corresponding to the second downlink resource;

and sending the second data stored in the buffer of the third HARQ process on the second downlink resource.

Optionally, the base station cannot transmit the second data on the first downlink resource, including any one of the following situations:

the base station performs LBT on the first downlink resource to detect that a channel is busy, so that the second data cannot be sent on the first downlink resource;

the base station determines that there is another downlink transmission on the first downlink resource that overlaps or partially overlaps in the time domain, and the base station decides to transmit the downlink transmission preferentially, resulting in failure to send the second data on the first downlink resource.

Optionally, the first downlink resource configuration and the second downlink resource configuration have different identification information.

Optionally, the apparatus further comprises: a data receiving module (not shown in the figure).

A data receiving module, configured to receive first data sent on a second uplink resource;

wherein the second uplink resource is determined according to a second uplink resource configuration when the first data cannot be sent on a first uplink resource, the first uplink resource corresponds to a first uplink resource configuration, and the first uplink resource configuration and the second uplink resource configuration are two different resource configurations of the same uplink BWP.

Referring to fig. 10, which shows a schematic structural diagram of a terminal 100 according to an embodiment of the present application, the terminal 100 may include: a processor 101, a receiver 102, a transmitter 103, a memory 104, and a bus 105.

The processor 101 includes one or more processing cores, and the processor 101 executes various functional applications and information processing by running software programs and modules.

The receiver 102 and the transmitter 103 may be implemented as one communication component, which may be a communication chip.

The memory 104 is connected to the processor 101 through a bus 105.

The memory 104 may be used to store a computer program for execution by the processor 101 to implement the various steps performed by the terminal in the above-described method embodiments.

Further, the memory 104 may be implemented by any type or combination of volatile or non-volatile storage devices, including, but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), Static Random Access Memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, programmable read-only memory (PROM).

In an exemplary embodiment, the terminal includes a processor, a memory, and a transceiver, which may include a receiver for receiving information and a transmitter for transmitting information.

The processor is configured to determine, when first data cannot be sent on a first uplink resource, a second uplink resource according to a second uplink resource configuration, where the first uplink resource corresponds to the first uplink resource configuration, and the first uplink resource configuration and the second uplink resource configuration are two different resource configurations of the same uplink BWP;

the transceiver is configured to transmit the first data on the second uplink resource.

Optionally, the processor is further configured to select a first HARQ process as the HARQ process corresponding to the second uplink resource according to the maximum HARQ process number corresponding to the second uplink resource configuration, where the first HARQ process is the HARQ process corresponding to the first uplink resource, and the first data is stored in the cache of the first HARQ process;

the transceiver is further configured to send the first data stored in the buffer of the first HARQ process on the second uplink resource.

Optionally, the maximum HARQ process number corresponding to the second uplink resource configuration is the same as the maximum HARQ process number corresponding to the first uplink resource configuration;

alternatively, the first and second electrodes may be,

and the maximum HARQ process number corresponding to the second uplink resource configuration is different from the maximum HARQ process number corresponding to the first uplink resource configuration.

Optionally, the processor is further configured to select a second HARQ process as the HARQ process corresponding to the second uplink resource according to the maximum HARQ process number corresponding to the second uplink resource configuration if the first HARQ process is not available for the second uplink resource;

the processor is further configured to move the first data from the cache of the first HARQ process to the cache of the second HARQ process;

the transceiver is further configured to send the first data stored in the buffer of the second HARQ process on the second uplink resource.

Optionally, the first uplink resource configuration corresponds to a first HARQ process set, and the second uplink resource configuration corresponds to a second HARQ process set;

the processor is further configured to select a second HARQ process from the second HARQ process set as the HARQ process corresponding to the second uplink resource, where the second HARQ process is different from a first HARQ process, the first HARQ process is the HARQ process corresponding to the first uplink resource selected from the first HARQ process set, and the first data is stored in the cache of the first HARQ process;

the processor is further configured to move the first data from the cache of the first HARQ process to the cache of the second HARQ process;

the transceiver is further configured to send the first data stored in the buffer of the second HARQ process on the second uplink resource.

Optionally, the processor is further configured to empty the buffer of the first HARQ process.

Optionally, the processor is further configured to select the first HARQ process as the HARQ process corresponding to the second uplink resource if the first HARQ process set and the second HARQ process set include at least one same HARQ process, and the at least one same HARQ process includes the first HARQ process;

the transceiver is further configured to send the first data stored in the buffer of the first HARQ process on the second uplink resource.

Optionally, the terminal cannot send the first data on the first uplink resource, including any one of the following situations:

the terminal executes LBT on the first uplink resource to detect that a channel is busy, so that the first data cannot be sent on the first uplink resource;

the terminal determines that there is another uplink transmission on the first uplink resource that overlaps or partially overlaps in the time domain, and determines to transmit the uplink transmission preferentially, resulting in failure to send the first data on the first uplink resource.

Optionally, the first uplink resource configuration and the second uplink resource configuration have different identification information.

Optionally, the transceiver is further configured to receive, by the terminal, second data transmitted on a second downlink resource;

the second downlink resource is determined according to a second downlink resource configuration when the second data cannot be sent on the first downlink resource, where the first downlink resource corresponds to the first downlink resource configuration, and the first downlink resource configuration and the second downlink resource configuration are two different resource configurations of the same downlink BWP. Referring to fig. 11, a schematic structural diagram of a base station 110 according to an embodiment of the present application is shown. The base station 110 may include: a processor 111, a receiver 112, a transmitter 113, a memory 114, and a bus 115.

The processor 111 includes one or more processing cores, and the processor 111 executes various functional applications and information processing by executing software programs and modules.

The receiver 112 and the transmitter 113 may be implemented as one communication component, which may be a communication chip.

The memory 114 is connected to the processor 111 via a bus 115.

The memory 114 may be used for storing a computer program for execution by the processor 111 for carrying out the various steps performed by the base station in the above-described method embodiments.

Further, the memory 114 may be implemented by any type or combination of volatile or non-volatile storage devices, including, but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), Static Random Access Memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, programmable read-only memory (PROM).

In an exemplary embodiment, the base station includes a processor, a memory, and a transceiver, which may include a receiver for receiving information and a transmitter for transmitting information.

The processor is configured to determine a second downlink resource according to a second downlink resource configuration when second data cannot be sent on a first downlink resource, where the first downlink resource corresponds to the first downlink resource configuration, and the first downlink resource configuration and the second downlink resource configuration are two different resource configurations of the same downlink BWP;

the transceiver is configured to transmit the second data on the second downlink resource.

Optionally, the processor is further configured to select a third HARQ process as the HARQ process corresponding to the second downlink resource according to the maximum HARQ process number corresponding to the second downlink resource configuration, where the third HARQ process is the HARQ process corresponding to the first downlink resource, and the second data is stored in a cache of the third HARQ process;

the transceiver is further configured to send, on the second downlink resource, the second data stored in the buffer of the third HARQ process.

Optionally, the maximum HARQ process number corresponding to the second downlink resource configuration is the same as the maximum HARQ process number corresponding to the first downlink resource configuration;

alternatively, the first and second electrodes may be,

the maximum HARQ process number corresponding to the second downlink resource configuration is different from the maximum HARQ process number corresponding to the first downlink resource configuration.

Optionally, the processor is further configured to select a fourth HARQ process as the HARQ process corresponding to the second downlink resource according to the maximum HARQ process number corresponding to the second downlink resource configuration if the third HARQ process is not available for the second downlink resource;

the processor is further configured to move the second data from the buffer of the third HARQ process to the buffer of the fourth HARQ process;

the transceiver is further configured to send, on the second downlink resource, the second data stored in the buffer of the fourth HARQ process.

Optionally, the first downlink resource configuration corresponds to a third HARQ process set, and the second downlink resource configuration corresponds to a fourth HARQ process set;

optionally, the processor is further configured to select a fourth HARQ process from the fourth HARQ process set as the HARQ process corresponding to the second downlink resource, where the fourth HARQ process is different from a third HARQ process, the third HARQ process is the HARQ process corresponding to the first downlink resource selected from the third HARQ process set, and the second data is stored in a cache of the third HARQ process;

the processor is further configured to move the second data from the buffer of the third HARQ process to the buffer of the fourth HARQ process;

the transceiver is further configured to send, on the second downlink resource, the second data stored in the buffer of the fourth HARQ process.

Optionally, the processor is further configured to empty the buffer of the third HARQ process.

Optionally, the processor is further configured to select the third HARQ process as the HARQ process corresponding to the second downlink resource if the third HARQ process set and the fourth HARQ process set include at least one same HARQ process, and the at least one same HARQ process includes the third HARQ process;

the transceiver is further configured to send, on the second downlink resource, the second data stored in the buffer of the third HARQ process.

Optionally, the base station cannot transmit the second data on the first downlink resource, including any one of the following situations:

the base station performs LBT on the first downlink resource to detect that a channel is busy, so that the second data cannot be sent on the first downlink resource;

the base station determines that there is another downlink transmission on the first downlink resource that overlaps or partially overlaps in the time domain, and the base station decides to transmit the downlink transmission preferentially, resulting in failure to send the second data on the first downlink resource.

Optionally, the first downlink resource configuration and the second downlink resource configuration have different identification information.

Optionally, the transceiver is further configured to receive first data sent on a second uplink resource;

wherein the second uplink resource is determined according to a second uplink resource configuration when the first data cannot be sent on a first uplink resource, the first uplink resource corresponds to a first uplink resource configuration, and the first uplink resource configuration and the second uplink resource configuration are two different resource configurations of the same uplink BWP.

The embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is loaded and executed by a processor to implement the data transmission method on the unlicensed spectrum at the terminal side.

The embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is loaded and executed by a processor to implement the method for transmitting data on the unlicensed spectrum on the base station side.

The application also provides a terminal program product, and when the terminal program product runs on a terminal, the terminal is enabled to execute the data transmission method on the unlicensed spectrum of the terminal side.

The present application also provides a base station program product, which, when running on a base station, causes the base station to execute the above-mentioned method for transmitting data on an unlicensed spectrum on the base station side.

Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The above description is only exemplary of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements and the like that are made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (44)

1. A method for data transmission over an unlicensed spectrum, the method comprising:

   when a terminal cannot send first data on a first uplink resource, the terminal determines a second uplink resource according to a second uplink resource configuration, wherein the first uplink resource corresponds to the first uplink resource configuration, and the first uplink resource configuration and the second uplink resource configuration are two different resource configurations of the same uplink BWP;

   and the terminal sends the first data on the second uplink resource.
2. The method of claim 1, wherein the terminal transmits the first data on the second uplink resource, and wherein the method comprises:

   the terminal selects a first HARQ process as the HARQ process corresponding to the second uplink resource according to the maximum HARQ process number corresponding to the second uplink resource configuration, wherein the first HARQ process is the HARQ process corresponding to the first uplink resource, and the first data is stored in the cache of the first HARQ process;

   and the terminal sends the first data stored in the buffer of the first HARQ process on the second uplink resource.
3. The method of claim 2,

   the maximum HARQ process number corresponding to the second uplink resource configuration is the same as the maximum HARQ process number corresponding to the first uplink resource configuration;

   alternatively, the first and second electrodes may be,

   and the maximum HARQ process number corresponding to the second uplink resource configuration is different from the maximum HARQ process number corresponding to the first uplink resource configuration.
4. A method according to claim 2 or 3, characterized in that the method further comprises:

   if the first HARQ process is unavailable for the second uplink resource, the terminal selects a second HARQ process as the HARQ process corresponding to the second uplink resource according to the maximum HARQ process number corresponding to the second uplink resource configuration;

   the terminal moves the first data from the cache of the first HARQ process to the cache of the second HARQ process;

   and the terminal sends the first data stored in the buffer of the second HARQ process on the second uplink resource.
5. The method of claim 1, wherein the first uplink resource configuration corresponds to a first set of HARQ processes and the second uplink resource configuration corresponds to a second set of HARQ processes;

   the terminal sends the first data on the second uplink resource, including:

   the terminal selects a second HARQ process from the second HARQ process set as a HARQ process corresponding to the second uplink resource, wherein the second HARQ process is different from a first HARQ process, the first HARQ process is the HARQ process corresponding to the first uplink resource selected from the first HARQ process set, and the first data is stored in a cache of the first HARQ process;

   the terminal moves the first data from the cache of the first HARQ process to the cache of the second HARQ process;

   and the terminal sends the first data stored in the buffer of the second HARQ process on the second uplink resource.
6. The method of claim 5, wherein after the terminal moves the first data from the buffer of the first HARQ process to the buffer of the second HARQ process, the method further comprises:

   and the terminal empties the cache of the first HARQ process.
7. The method of claim 5 or 6, further comprising:

   if the first HARQ process set and the second HARQ process set comprise at least one same HARQ process, and the at least one same HARQ process comprises the first HARQ process, the terminal selects the first HARQ process as the HARQ process corresponding to the second uplink resource;

   and the terminal sends the first data stored in the buffer of the first HARQ process on the second uplink resource.
8. The method according to any one of claims 1 to 7, wherein the terminal is unable to transmit the first data on the first uplink resource, and the method comprises any one of the following situations:

   the terminal executes LBT on the first uplink resource to detect that a channel is busy, so that the first data cannot be sent on the first uplink resource;

   the terminal determines that there is another uplink transmission on the first uplink resource that overlaps or partially overlaps in the time domain, and determines to transmit the uplink transmission preferentially, resulting in failure to send the first data on the first uplink resource.
9. The method according to any of claims 1 to 8, wherein the first uplink resource configuration and the second uplink resource configuration have different identification information.
10. The method according to any one of claims 1 to 9, further comprising:

    the terminal receives second data sent on a second downlink resource;

    the second downlink resource is determined according to a second downlink resource configuration when the second data cannot be sent on the first downlink resource, where the first downlink resource corresponds to the first downlink resource configuration, and the first downlink resource configuration and the second downlink resource configuration are two different resource configurations of the same downlink BWP.
11. A method for data transmission over an unlicensed spectrum, the method comprising:

    when a base station cannot send second data on a first downlink resource, the base station determines a second downlink resource according to a second downlink resource configuration, wherein the first downlink resource corresponds to the first downlink resource configuration, and the first downlink resource configuration and the second downlink resource configuration are two different resource configurations of the same downlink BWP;

    and the base station sends the second data on the second downlink resource.
12. The method of claim 11, wherein the base station transmits the second data on the second downlink resource, comprising:

    the base station selects a third HARQ process as the HARQ process corresponding to the second downlink resource according to the maximum HARQ process number corresponding to the second downlink resource configuration, wherein the third HARQ process is the HARQ process corresponding to the first downlink resource, and the second data is stored in the cache of the third HARQ process;

    and the base station sends the second data stored in the buffer of the third HARQ process on the second downlink resource.
13. The method of claim 12,

    the maximum HARQ process number corresponding to the second downlink resource configuration is the same as the maximum HARQ process number corresponding to the first downlink resource configuration;

    alternatively, the first and second electrodes may be,

    the maximum HARQ process number corresponding to the second downlink resource configuration is different from the maximum HARQ process number corresponding to the first downlink resource configuration.
14. The method according to claim 12 or 13, characterized in that the method further comprises:

    if the third HARQ process is not available for the second downlink resource, the base station selects a fourth HARQ process as the HARQ process corresponding to the second downlink resource according to the maximum HARQ process number corresponding to the second downlink resource configuration;

    the base station moves the second data from the buffer of the third HARQ process to the buffer of the fourth HARQ process;

    and the base station sends the second data stored in the buffer of the fourth HARQ process on the second downlink resource.
15. The method of claim 11, wherein the first downlink resource configuration corresponds to a third set of HARQ processes and the second downlink resource configuration corresponds to a fourth set of HARQ processes;

    the base station sends the second data on the second downlink resource, including:

    the base station selects a fourth HARQ process from the fourth HARQ process set as the HARQ process corresponding to the second downlink resource, wherein the fourth HARQ process is different from a third HARQ process, the third HARQ process is the HARQ process corresponding to the first downlink resource selected from the third HARQ process set, and the second data is stored in a cache of the third HARQ process;

    the base station moves the second data from the buffer of the third HARQ process to the buffer of the fourth HARQ process;

    and the base station sends the second data stored in the buffer of the fourth HARQ process on the second downlink resource.
16. The method of claim 15, wherein after the base station moves the second data from the buffer of the third HARQ process to the buffer of the fourth HARQ process, further comprising:

    and the base station empties the buffer of the third HARQ process.
17. The method according to claim 15 or 16, characterized in that the method further comprises:

    if the third HARQ process set and the fourth HARQ process set comprise at least one same HARQ process, and the at least one same HARQ process comprises the third HARQ process, the base station selects the third HARQ process as the HARQ process corresponding to the second downlink resource;

    and the base station sends the second data stored in the buffer of the third HARQ process on the second downlink resource.
18. The method according to any of claims 11 to 17, wherein the base station is unable to transmit the second data on the first downlink resource, comprising any of the following situations:

    the base station performs LBT on the first downlink resource to detect that a channel is busy, so that the second data cannot be sent on the first downlink resource;

    the base station determines that there is another downlink transmission on the first downlink resource that overlaps or partially overlaps in the time domain, and the base station decides to transmit the downlink transmission preferentially, resulting in failure to send the second data on the first downlink resource.
19. The method according to any of claims 11 to 18, wherein the first downlink resource configuration and the second downlink resource configuration have different identification information.
20. The method of any one of claims 11 to 19, further comprising:

    the base station receives first data sent on a second uplink resource;

    wherein the second uplink resource is determined according to a second uplink resource configuration when the first data cannot be sent on a first uplink resource, the first uplink resource corresponds to a first uplink resource configuration, and the first uplink resource configuration and the second uplink resource configuration are two different resource configurations of the same uplink BWP.
21. An apparatus for data transmission over an unlicensed spectrum, the apparatus being applied to a terminal and comprising:

    a resource determining module, configured to determine, when the terminal cannot send first data on a first uplink resource, a second uplink resource according to a second uplink resource configuration, where the first uplink resource corresponds to the first uplink resource configuration, and the first uplink resource configuration and the second uplink resource configuration are two different resource configurations of a same uplink BWP;

    and a data sending module, configured to send the first data on the second uplink resource.
22. The apparatus of claim 21, wherein the data sending module is configured to:

    selecting a first HARQ process as the HARQ process corresponding to the second uplink resource according to the maximum HARQ process number corresponding to the second uplink resource configuration, wherein the first HARQ process is the HARQ process corresponding to the first uplink resource, and the first data is stored in the cache of the first HARQ process;

    and sending the first data stored in the buffer of the first HARQ process on the second uplink resource.
23. The apparatus of claim 22,

    the maximum HARQ process number corresponding to the second uplink resource configuration is the same as the maximum HARQ process number corresponding to the first uplink resource configuration;

    alternatively, the first and second electrodes may be,

    and the maximum HARQ process number corresponding to the second uplink resource configuration is different from the maximum HARQ process number corresponding to the first uplink resource configuration.
24. The apparatus of claim 22 or 23, wherein the data sending module is further configured to:

    if the first HARQ process is unavailable for the second uplink resource, selecting a second HARQ process as the HARQ process corresponding to the second uplink resource according to the maximum HARQ process number corresponding to the second uplink resource configuration;

    moving the first data from the cache of the first HARQ process to the cache of the second HARQ process;

    and sending the first data stored in the buffer of the second HARQ process on the second uplink resource.
25. The apparatus of claim 21, wherein the first uplink resource configuration corresponds to a first set of HARQ processes and the second uplink resource configuration corresponds to a second set of HARQ processes;

    the data sending module is configured to:

    selecting a second HARQ process from the second HARQ process set as a HARQ process corresponding to the second uplink resource, wherein the second HARQ process is different from a first HARQ process, the first HARQ process is the HARQ process corresponding to the first uplink resource selected from the first HARQ process set, and the first data is stored in a cache of the first HARQ process;

    moving the first data from the cache of the first HARQ process to the cache of the second HARQ process;

    and sending the first data stored in the buffer of the second HARQ process on the second uplink resource.
26. The apparatus of claim 25, further comprising:

    and the buffer emptying module is used for emptying the buffer of the first HARQ process.
27. The apparatus of claim 25 or 26, wherein the data sending module is further configured to:

    if the first HARQ process set and the second HARQ process set comprise at least one same HARQ process, and the at least one same HARQ process comprises the first HARQ process, selecting the first HARQ process as the HARQ process corresponding to the second uplink resource;

    and sending the first data stored in the buffer of the first HARQ process on the second uplink resource.
28. The apparatus according to any of claims 21 to 27, wherein the terminal is unable to transmit the first data on the first uplink resource, which includes any of the following situations:

    the terminal executes LBT on the first uplink resource to detect that a channel is busy, so that the first data cannot be sent on the first uplink resource;

    the terminal determines that there is another uplink transmission on the first uplink resource that overlaps or partially overlaps in the time domain, and determines to transmit the uplink transmission preferentially, resulting in failure to send the first data on the first uplink resource.
29. The apparatus according to any of claims 21 to 28, wherein the first uplink resource configuration and the second uplink resource configuration have different identification information.
30. The apparatus of any one of claims 21 to 29, further comprising:

    a data receiving module, configured to receive second data sent on a second downlink resource;

    the second downlink resource is determined according to a second downlink resource configuration when the second data cannot be sent on the first downlink resource, where the first downlink resource corresponds to the first downlink resource configuration, and the first downlink resource configuration and the second downlink resource configuration are two different resource configurations of the same downlink BWP.
31. An apparatus for data transmission over unlicensed spectrum, for use in a base station, the apparatus comprising:

    a resource determining module, configured to determine a second downlink resource according to a second downlink resource configuration when the base station cannot send second data on a first downlink resource, where the first downlink resource corresponds to the first downlink resource configuration, and the first downlink resource configuration and the second downlink resource configuration are two different resource configurations of the same downlink BWP;

    and a data sending module, configured to send the second data on the second downlink resource.
32. The apparatus of claim 31, wherein the data sending module is configured to:

    selecting a third HARQ process as the HARQ process corresponding to the second downlink resource according to the maximum HARQ process number corresponding to the second downlink resource configuration, wherein the third HARQ process is the HARQ process corresponding to the first downlink resource, and the second data is stored in a cache of the third HARQ process;

    and sending the second data stored in the buffer of the third HARQ process on the second downlink resource.
33. The apparatus of claim 32,

    the maximum HARQ process number corresponding to the second downlink resource configuration is the same as the maximum HARQ process number corresponding to the first downlink resource configuration;

    alternatively, the first and second electrodes may be,

    the maximum HARQ process number corresponding to the second downlink resource configuration is different from the maximum HARQ process number corresponding to the first downlink resource configuration.
34. The apparatus of claim 32 or 33, wherein the data sending module is further configured to:

    if the third HARQ process is not available for the second downlink resource, selecting a fourth HARQ process as the HARQ process corresponding to the second downlink resource according to the maximum HARQ process number corresponding to the second downlink resource configuration;

    moving the second data from the buffer of the third HARQ process to the buffer of the fourth HARQ process;

    and sending the second data stored in the buffer of the fourth HARQ process on the second downlink resource.
35. The apparatus of claim 31, wherein the first downlink resource configuration corresponds to a third set of HARQ processes and the second downlink resource configuration corresponds to a fourth set of HARQ processes;

    the data sending module is configured to:

    selecting a fourth HARQ process from the fourth HARQ process set as the HARQ process corresponding to the second downlink resource, wherein the fourth HARQ process is different from a third HARQ process, the third HARQ process is the HARQ process corresponding to the first downlink resource selected from the third HARQ process set, and the second data is stored in a cache of the third HARQ process;

    moving the second data from the buffer of the third HARQ process to the buffer of the fourth HARQ process;

    and sending the second data stored in the buffer of the fourth HARQ process on the second downlink resource.
36. The apparatus of claim 35, further comprising:

    and the buffer emptying module is used for emptying the buffer of the third HARQ process.
37. The apparatus of claim 35 or 36, wherein the data sending module is further configured to:

    if the third HARQ process set and the fourth HARQ process set comprise at least one same HARQ process, and the at least one same HARQ process comprises the third HARQ process, selecting the third HARQ process as the HARQ process corresponding to the second downlink resource;

    and sending the second data stored in the buffer of the third HARQ process on the second downlink resource.
38. The apparatus according to any of claims 31 to 37, wherein the base station is unable to transmit the second data on the first downlink resource, and the method comprises any of the following cases:

    the base station performs LBT on the first downlink resource to detect that a channel is busy, so that the second data cannot be sent on the first downlink resource;

    the base station determines that there is another downlink transmission on the first downlink resource that overlaps or partially overlaps in the time domain, and the base station decides to transmit the downlink transmission preferentially, resulting in failure to send the second data on the first downlink resource.
39. The apparatus according to any of claims 31 to 38, wherein the first downlink resource configuration and the second downlink resource configuration have different identification information.
40. The apparatus of any one of claims 31 to 39, further comprising:

    a data receiving module, configured to receive first data sent on a second uplink resource;

    wherein the second uplink resource is determined according to a second uplink resource configuration when the first data cannot be sent on a first uplink resource, the first uplink resource corresponds to a first uplink resource configuration, and the first uplink resource configuration and the second uplink resource configuration are two different resource configurations of the same uplink BWP.
41. A terminal, characterized in that the terminal comprises a processor, a memory and a transceiver;

    the processor is configured to determine, when first data cannot be sent on a first uplink resource, a second uplink resource according to a second uplink resource configuration, where the first uplink resource corresponds to the first uplink resource configuration, and the first uplink resource configuration and the second uplink resource configuration are two different resource configurations of the same uplink BWP;

    the transceiver is configured to transmit the first data on the second uplink resource.
42. A base station, characterized in that the base station comprises a processor, a memory and a transceiver;

    the processor is configured to determine a second downlink resource according to a second downlink resource configuration when second data cannot be sent on a first downlink resource, where the first downlink resource corresponds to the first downlink resource configuration, and the first downlink resource configuration and the second downlink resource configuration are two different resource configurations of the same downlink BWP;

    the transceiver is configured to transmit the second data on the second downlink resource.
43. A computer-readable storage medium, in which a computer program is stored which is adapted to be executed by a processor to implement a method of data transmission over an unlicensed spectrum as claimed in any one of claims 1 to 10.
44. A computer-readable storage medium, in which a computer program is stored which is adapted to be executed by a processor to implement a method of data transmission over an unlicensed spectrum as claimed in any one of claims 11 to 20.

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