CN108400837B

CN108400837B - Data sending method and terminal equipment

Info

Publication number: CN108400837B
Application number: CN201710073271.3A
Authority: CN
Inventors: 陈宪明; 戴博; 刘锟; 杨维维; 方惠英
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2017-02-06
Filing date: 2017-02-06
Publication date: 2022-08-02
Anticipated expiration: 2037-02-06
Also published as: CN108400837A; WO2018141214A1; CN114978430A

Abstract

The invention provides a data sending method and terminal equipment. Wherein, the method comprises the following steps: the data packets are transmitted according to the number of data packets and/or the channel quality indicator. The invention solves the problem that no specific using mechanism of the granting and non-granting sending modes is provided or how to realize the mutual conversion of the granting and non-granting sending modes in the related technology, and achieves the technical effect of improving the efficiency of the non-granting sending mode.

Description

Data sending method and terminal equipment

Technical Field

The present invention relates to the field of communications, and in particular, to a data transmission method and a terminal device.

Background

To continue to improve system efficiency and reduce latency to meet fifth generation (5G) mobile communication needs, a next generation access technology named New Radio (NR) is being discussed in the 3GPP standards organization. The new radio frequency technology is oriented to the following three use scenes: enhanced Mobile Broadband (eMBB), massive Machine Type Communications (mMTC), Ultra-Reliable and Low Latency Communications (URLLC).

For the uplink of the URLLC scene, a transmission mode based on resource grant is supported; in addition, in order to further reduce the user plane delay, a Grant-free transmission mode (Grant-free) is adopted by the standard organization at present. So far, there is no good solution on the specific usage mechanism of the grant and non-grant transmission modes or how to implement the mutual conversion of the grant and non-grant transmission modes.

Disclosure of Invention

The embodiment of the invention provides a data sending method and terminal equipment, which are used for at least solving the problem that a specific using mechanism of a grant sending mode and a non-grant sending mode is not provided or how to realize the mutual conversion of the grant sending mode and the non-grant sending mode in the related technology.

According to an embodiment of the present invention, there is provided a data transmission method including: and transmitting the data packets according to the number of the data packets and/or the channel quality index.

Optionally, the sending the data packets according to the number of data packets and/or the channel quality indicator includes at least one of: when the number of the data packets is 1, or when the number of the data packets is 1 and the channel quality indicator exceeds a first threshold value, the data packets are sent in the following way: selecting a grant-free time slot of a grant-free opportunity of a pre-configured resource pool to send the data packet; or selecting M continuous grant-free time slots to continuously send the data packets, wherein the M continuous grant-free time slots belong to the same or different grant-free opportunities of a pre-configured resource pool, and M is an integer greater than 1; or selecting a grant-free time slot of a grant-free time of a pre-configured resource pool or selecting a terminal-specific scheduling request resource to send scheduling request information, monitoring and receiving the resource grant information from the network side, and sending the data packet according to the resource grant information; when the number of the data packets is N, or when the number of the data packets is N and the channel quality indicator exceeds a first threshold value, the data packets are sent in the following manner, where N is an integer greater than 1: selecting N different grant-free time slots to sequentially send the N data packets, wherein the N different grant-free time slots belong to the same or different grant-free time of a pre-configured resource pool; or selecting N-1 different grant-free time slots to sequentially send the 1 st to N-1 th data packets in the N data packets, monitoring and receiving resource grant information from a network side, and sending the N data packets in the N data packets according to the resource grant information, wherein the N-1 different grant-free time slots belong to the same or different grant-free time of a preconfigured resource pool, and each data packet in the 1 st to N-1 th data packets carries scheduling request information; when the number of the data packets is 1 and the channel quality index does not exceed a first threshold value, the data packets are sent in the following way: selecting a grant-free time slot of a grant-free time of a pre-configured resource pool or selecting a terminal-specific scheduling request resource to send scheduling request information, monitoring and receiving resource grant information from a network side, and sending the data packet according to the resource grant information; when the number of the data packets is N and the channel quality index does not exceed a first threshold value, wherein N is an integer greater than 1, the data packets are sent in the following way: selecting one grant-free time slot of one grant-free time of a pre-configured resource pool to send scheduling request information, or selecting one or N terminal-specific scheduling request resources to send scheduling request information, monitoring and receiving N resource grant information from a network side, and sequentially sending the N data packets according to the N resource grant information.

Optionally, the channel quality indicator includes: the reference signal received power.

Optionally, the pre-configured resource pool comprises at least one of the following features: the grant-free time of the pre-configured resource pool appears periodically; one grant-free occasion of the pre-configured resource pool comprises at least one grant-free time slot.

Optionally, the hybrid automatic repeat request HARQ process corresponding to each of the grant-free slots included in the one grant-free opportunity is different.

According to another embodiment of the present invention, there is provided a data transmission method including: when X data packets need to be sent in a grant-free mode, X different grant-free time slots are selected to send the X data packets in sequence, wherein the X different grant-free time slots belong to the same or different grant-free time of a pre-configured resource pool, and X is an integer greater than 0.

Optionally, the selecting X different grant-free time slots to sequentially send the X data packets includes: for any data packet in the X data packets, selecting a time frequency resource which is matched with the size of the data packet and is in a time frequency resource set of a 1 st grant-free sub time slot to initially send the data packet; when the number of the grant-free sub-time slots included in the grant-free time slot exceeds 1, repeatedly transmitting the data packet by using other grant-free sub-time slots except for the 1 st grant-free sub-time slot; wherein the 1 st grant-free sub-slot is a 1 st grant-free sub-slot of a grant-free slot for transmitting the data packet.

Optionally, when the number of the grant-free sub-slots included in the grant-free slot exceeds 1, repeatedly transmitting the data packet using the other grant-free sub-slots except for the 1 st grant-free sub-slot includes: selecting the time frequency resource of the time frequency resource set of each other non-grant sub-time slot, which is matched with the size of the data packet, to repeatedly transmit the data packet for 1 time, wherein each other non-grant sub-time slot comprises 1 time frequency resource set, and the size of each type of time frequency resource of the set is the same as that of the same type of time frequency resource of the time frequency resource set of the 1 st non-grant sub-time slot; or selecting the time frequency resource matched with the size of the data packet of one time frequency resource set of every continuous Q1 other grant-free sub-time slots to repeatedly send the data packet for 1 time, wherein each other grant-free sub-time slot comprises Q2 time frequency resource sets, the product of Q2 and Q1 is equal to the number of terminal devices sharing the 1 st grant-free sub-time slot time frequency resource set, the size of each type of time frequency resource of the time frequency resource sets of other grant-free sub-time slots is 1/Q2 of the size of the same type of time frequency resource of the 1 st grant-free sub-time slot time frequency resource set, and Q1 and Q2 are integers greater than 0.

Optionally, one time-frequency resource set of each consecutive Q1 other grant-free sub-slots is obtained according to one of the following manners: indicating to the terminal equipment through signaling; implicitly from the reference signal.

Optionally, for the initial transmission and each repeated transmission of the data packet, the code words of the data packet are scrambled according to different scrambling codes.

Optionally, the selecting X different grant-free time slots to sequentially send X data packets includes: the HARQ process corresponding to each of the X different grant-free slots is different.

Optionally, when one of the X data packets is retransmitted in a grant manner, the resource grant information for retransmission includes an index of a HARQ process used by the data packet.

According to another embodiment of the present invention, there is provided a terminal device including: a processor and a memory storing processor-executable instructions that, when executed by the processor, perform the following: and transmitting the data packets according to the number of the data packets and/or the channel quality index.

Optionally, the terminal device is further configured to perform at least one of the following operations: when the number of the data packets is 1, or when the number of the data packets is 1 and the channel quality indicator exceeds a first threshold value, the data packets are sent in the following way: selecting a grant-free time slot of a grant-free opportunity of a pre-configured resource pool to send the data packet; or selecting M continuous grant-free time slots to continuously send the data packets, wherein the M continuous grant-free time slots belong to the same or different grant-free opportunities of a pre-configured resource pool, and M is an integer greater than 1; or selecting a grant-free time slot of a grant-free time of a pre-configured resource pool or selecting a terminal-specific scheduling request resource to send scheduling request information, monitoring and receiving the resource grant information from the network side, and sending the data packet according to the resource grant information; when the number of the data packets is N, or when the number of the data packets is N and the channel quality indicator exceeds a first threshold value, the data packets are sent in the following manner, where N is an integer greater than 1: selecting N different grant-free time slots to sequentially send the N data packets, wherein the N different grant-free time slots belong to the same or different grant-free time of a pre-configured resource pool; or selecting N-1 different grant-free time slots to sequentially send the 1 st to N-1 th data packets in the N data packets, monitoring and receiving resource grant information from a network side, and sending the N data packets in the N data packets according to the resource grant information, wherein the N-1 different grant-free time slots belong to the same or different grant-free time of a preconfigured resource pool, and each data packet in the 1 st to N-1 th data packets carries scheduling request information; when the number of the data packets is 1 and the channel quality index does not exceed a first threshold value, the data packets are sent in the following way: selecting a grant-free time slot of a grant-free time of a pre-configured resource pool or selecting a terminal-specific scheduling request resource to send scheduling request information, monitoring and receiving resource grant information from a network side, and sending the data packet according to the resource grant information; when the number of the data packets is N and the channel quality index does not exceed a first threshold value, wherein N is an integer greater than 1, the data packets are sent in the following way: selecting one grant-free time slot of one grant-free time of a pre-configured resource pool to send scheduling request information, or selecting one or N terminal-specific scheduling request resources to send scheduling request information, monitoring and receiving N resource grant information from a network side, and sequentially sending the N data packets according to the N resource grant information.

According to still another embodiment of the present invention, there is provided a terminal device including: a processor and a memory storing processor-executable instructions that, when executed by the processor, perform the following: when X data packets need to be sent in a grant-free mode, X different grant-free time slots are selected to send the X data packets in sequence, wherein the X different grant-free time slots belong to the same or different grant-free time of a pre-configured resource pool, and X is an integer greater than 0.

Optionally, the terminal device is further configured to perform the following operations: for any data packet in the X data packets, selecting a time frequency resource which is matched with the size of the data packet and is in a time frequency resource set of a 1 st grant-free sub time slot to initially send the data packet; when the number of the grant-free sub-time slots included in the grant-free time slot exceeds 1, repeatedly transmitting the data packet by using other grant-free sub-time slots except for the 1 st grant-free sub-time slot; wherein the 1 st grant-free sub-slot is a 1 st grant-free sub-slot of a grant-free slot for transmitting the data packet.

According to still another embodiment of the present invention, there is also provided a storage medium. The storage medium is configured to store program code for performing the steps of:

and transmitting the data packets according to the number of the data packets and/or the channel quality index.

Optionally, the storage medium is further arranged to store program code for performing the steps of:

when X data packets need to be sent in a grant-free mode, X different grant-free time slots are selected to send the X data packets in sequence, wherein the X different grant-free time slots belong to the same or different grant-free time of a pre-configured resource pool, and X is an integer greater than 0.

According to the invention, the data packets are sent according to the number of the data packets and/or the channel quality index, so that the problem that a specific use mechanism of the granting and non-granting sending modes is not provided or how to realize the mutual conversion of the granting and non-granting sending modes in the related technology is solved, and the technical effect of improving the efficiency of the non-granting sending mode is achieved.

Drawings

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

FIG. 1 is a flow chart of a method of data transmission according to an embodiment of the present invention;

FIG. 2 is a flow chart of another method of data transmission according to an embodiment of the present invention;

FIG. 3 is a diagram of a data packet transmission according to an alternative first embodiment;

fig. 4 is a diagram of a transmit packet according to a second alternative embodiment;

fig. 5 is a diagram illustrating a process of sending scheduling request information according to a third alternative embodiment;

FIG. 6 is a diagram of a transmit packet according to a fourth alternative embodiment;

FIG. 7 is a diagram of a fifth alternative embodiment of sending a first data packet;

fig. 8 is a diagram illustrating repeated transmission of data packets in a grant-free time slot according to a sixth alternative embodiment;

fig. 9 is a diagram illustrating a seventh alternative embodiment of repeatedly transmitting a data packet in a grant-free time slot;

fig. 10 is a diagram illustrating an eighth alternative embodiment of repeatedly transmitting a data packet in a grant-free time slot;

fig. 11 is a block diagram of a terminal device according to an embodiment of the present invention;

fig. 12 is a block diagram of another terminal device according to an embodiment of the present invention.

Detailed Description

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

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

Example 1

In the present embodiment, a data transmission method is provided, and fig. 1 is a flowchart of a data transmission method according to an embodiment of the present invention, as shown in fig. 1, the flowchart includes the following steps:

step S102, the data packet is sent according to the number of the data packets and/or the channel quality index.

It should be noted that the channel quality indicators include, but are not limited to: the reference signal received power. Wherein, the terminal equipment can obtain the reference signal received power through measurement.

By the data transmission method, the data packets are transmitted according to the number of the data packets and/or the channel quality index, the problem that a specific use mechanism of the granting and non-granting transmission modes is not provided or how to realize the interconversion of the granting and non-granting transmission modes in the related technology is solved, and the technical effect of improving the efficiency of the non-granting transmission mode is achieved.

In an optional embodiment, the transmitting the data packet according to the number of data packets and/or the channel quality indicator includes at least one of:

when the number of the data packets is 1, or when the number of the data packets is 1 and the channel quality indicator exceeds a first threshold value, the data packets are sent in the following way: selecting a grant-free time slot of a grant-free opportunity of the pre-configured resource pool to transmit the data packet (expressed as a mode one); or, M consecutive grant-free time slots are selected to continuously transmit the data packet, where the M consecutive grant-free time slots belong to the same or different grant-free occasions of the preconfigured resource pool, and M is an integer greater than 1 (denoted as a mode two); or selecting a grant-free time slot of a grant-free time of a pre-configured resource pool or selecting a terminal-specific scheduling request resource to send scheduling request information, monitoring and receiving the resource grant information from the network side, and sending the data packet according to the resource grant information (represented as a third mode);

it should be noted that the different manners described above are applicable to different conditions, for example, the manner one is applicable to a case where the size of the data packet does not exceed the maximum data packet size supported by the time-frequency resource set of one grant-free sub-slot, and the manner two and the manner three are applicable to a case where the size of the data packet exceeds the maximum data packet size supported by the time-frequency resource set of one grant-free sub-slot.

For the third mode, the scheduling request information is used to request the network side to grant resources for the data packet; when the network side configures terminal-specific scheduling request resources for the terminal device, the manner of sending scheduling request information corresponding to the third manner is to select one terminal-specific scheduling request resource to send the scheduling request information.

When the number of the data packets is N, or when the number of the data packets is N and the channel quality indicator exceeds a first threshold value, the data packets are sent in the following manner, where N is an integer greater than 1: selecting N different grant-free time slots to sequentially transmit the N data packets, wherein the N different grant-free time slots belong to the same or different grant-free occasions of a pre-configured resource pool (denoted as a mode one); or, selecting N-1 different grant-free time slots to sequentially send the 1 st to N-1 th data packets in the N data packets, monitoring and receiving resource grant information from a network side, and sending the N data packets in the N data packets according to the resource grant information, wherein the N-1 different grant-free time slots belong to the same or different grant-free time of a preconfigured resource pool, and each data packet in the 1 st to N-1 th data packets carries scheduling request information (represented as a mode two);

it should be noted that the different manners described above are applicable to different conditions, for example, the first manner is applicable to a case where none of the N data packets exceeds the maximum data packet size supported by the time-frequency resource set of one grant-free sub-slot, and the second manner is applicable to a case where none of the 1 st to N-1 st data packets exceeds the maximum data packet size supported by the time-frequency resource set of one grant-free sub-slot, but the size of the nth data packet exceeds the maximum data packet size supported by the time-frequency resource set of one grant-free sub-slot.

For the second mode, each of the 1 st to N-1 st data packets in the N data packets carries scheduling request information for the nth data packet, and requests the network side to grant resources for the nth data packet; monitoring and receiving resource grant information from a network side and sending an Nth data packet of the N data packets according to the resource grant information, wherein the operation is started at a preset time after the 1 st data packet of the N data packets is sent according to a grant-free mode or at a preset time after the N-1 th data packet of the N data packets is sent according to the grant-free mode; the former is beneficial to reducing the sending delay of the Nth data packet.

When the number of the data packets is 1 and the channel quality index does not exceed a first threshold value, the data packets are sent in the following way: selecting a grant-free time slot of a grant-free time of a pre-configured resource pool or selecting a terminal-specific scheduling request resource to send scheduling request information, monitoring and receiving the resource grant information from a network side, and sending the data packet according to the resource grant information;

it should be noted that, when the network side configures terminal-specific scheduling request resources for the terminal device, the manner of sending scheduling request information corresponding to the above manner is to select one terminal-specific scheduling request resource to send scheduling request information;

when the number of the data packets is N and the channel quality index does not exceed a first threshold value, wherein N is an integer greater than 1, the data packets are sent in the following way: selecting a grant-free time slot of a grant-free time of a pre-configured resource pool to send scheduling request information, or selecting one or N terminal-specific scheduling request resources to send scheduling request information, monitoring and receiving N resource grant information from a network side, and sequentially sending the N data packets according to the N resource grant information;

it should be noted that, when the network side configures terminal-specific scheduling request resources for the terminal device, the manner of sending the scheduling request information corresponding to the above manner is to select one or N terminal-specific scheduling request resources to send the scheduling request information.

Optionally, the pre-configured resource pool comprises at least one of the following features: the grant-free time of the pre-configured resource pool appears periodically; one grant-free occasion of the pre-configured resource pool comprises at least one grant-free time slot. In other words, the pre-configured resource pool consists of periodically occurring grant-free occasions consisting of one or a consecutive number of grant-free time slots.

The Hybrid Automatic Repeat reQuest (HARQ) process corresponding to each of the grantless timeslots included in the one grantless opportunity is different. To achieve the above effect, the index of the HARQ process corresponding to one grantless time slot in one grantless time slot may be implicitly obtained according to the index of the grantless time slot, for example, if one grantless time slot includes 4 grantless time slots, the 4 grantless time slots correspond to 4 HARQ processes different from each other one by one.

It should be noted that the period of the HARQ process may be one or multiple consecutive grant-free occasions, for example, it is still assumed that the grant-free occasion includes 4 grant-free slots, if the period of the HARQ process is 2 consecutive grant-free occasions, the total number of HARQ processes is 8, the 4 grant-free slots included in the 1 st grant-free occasion sequentially correspond to HARQ processes 1 to 4, and the 4 grant-free slots included in the 2 nd grant-free occasion sequentially correspond to HARQ processes 5 to 8.

With respect to the grant-free time slot, it should be further noted that one grant-free time slot may include one or more grant-free sub-time slots, the 1 st grant-free sub-time slot includes only one time-frequency resource set for initial transmission of a data packet, and the other grant-free sub-time slots except the 1 st grant-free sub-time slot are allowed to include one or more time-frequency resource sets for repeated transmission of the data packet; any one time frequency resource set may include one or more types of time frequency resources with different sizes, and the time frequency resources with different types are matched with different data packet sizes, that is, used for carrying data packets with different sizes.

A data transmission method is further provided in this embodiment, and fig. 2 is a flowchart of another data transmission method according to an embodiment of the present invention, as shown in fig. 2, the flowchart includes the following steps:

step S202, when there are X data packets to be sent in a grant-free manner, X different grant-free time slots are selected to send the X data packets in sequence,

wherein the X different grant-free time slots belong to the same or different grant-free occasions of a pre-configured resource pool, X being an integer greater than 0.

By the data transmission method in the embodiment, when X data packets need to be transmitted in the grant-free manner, X different grant-free time slots are selected to sequentially transmit the X data packets, so that the problem of how to simultaneously transmit a plurality of data packets in the grant-free manner is solved.

In an optional embodiment, selecting X different grant-free slots to sequentially transmit the X data packets includes the following steps:

step S21, for any data packet in the X data packets, selecting the time frequency resource of the time frequency resource set of the 1 st grant-free sub-time slot, which is matched with the size of the data packet, to initially send the data packet;

step S22, when the number of the non-granted sub-time slots included in the non-granted time slot exceeds 1, the data packet is repeatedly sent by using other non-granted sub-time slots except the 1 st non-granted sub-time slot;

wherein the 1 st grant-free sub-slot is a 1 st grant-free sub-slot of a grant-free slot for transmitting the data packet. The transmission reliability of the data packets is further improved by enabling the repeated transmission of the data packets.

Optionally, when the number of the grant-free sub-slots included in the grant-free slot exceeds 1, repeatedly sending the data packet by using other grant-free sub-slots except for the 1 st grant-free sub-slot includes the following steps:

step S31, selecting the time frequency resource of each time frequency resource set of other non-grant sub-time slots which is matched with the size of the data packet to repeatedly send the data packet for 1 time, wherein each other non-grant sub-time slot comprises 1 time frequency resource set, and the size of each type of time frequency resource of the set is the same as that of the same type of time frequency resource of the 1 st non-grant sub-time slot time frequency resource set;

for example, assuming that S (greater than 1 integer) other grant-free sub-slots exist, the 1 st time of the time frequency resource matching the size of the data packet in the time frequency resource set of the 1 st other grant-free sub-slot in the S other grant-free sub-slots is selected to repeatedly transmit the data packet, the 2 nd time of the time frequency resource matching the size of the data packet in the time frequency resource set of the 2 nd other grant-free sub-slot in the S other grant-free sub-slots is selected to repeatedly transmit the data packet, and so on, the S nd time of the time frequency resource matching the size of the data packet in the time frequency resource set of the S other grant-free sub-slots is selected to repeatedly transmit the data packet.

Or, in step S32, selecting a time-frequency resource matching the size of the data packet in one time-frequency resource set of every consecutive Q1 other grant-free sub-slots to repeatedly transmit the data packet 1 time, where each other grant-free sub-slot includes Q2 time-frequency resource sets, the product of Q2 and Q1 is equal to the number of terminal devices sharing the time-frequency resource set of the 1 st grant-free sub-slot, the size of each class of time-frequency resources in the time-frequency resource sets of the other grant-free sub-slots is 1/Q2 of the same class of time-frequency resources in the time-frequency resource set of the 1 st grant-free sub-slot, and Q1 and Q2 are integers greater than 0. The method determines the number of the time-frequency resource sets for repeatedly transmitting the data packet for 1 time according to the number of the terminal equipment sharing the 1 st grant-free sub-time-frequency resource set, thereby ensuring that the data packet collision from different terminal equipment (sharing the 1 st grant-free sub-time-frequency resource set) can not occur during the repeated transmission of the data packet; in addition, the method avoids additional overhead caused by the increase of the number of the time frequency resource sets by limiting the size of the time frequency resource sets used for repeatedly sending the data packets.

For example, assuming that there are C × Q1 other grant-free sub-slots (C is an integer greater than 1), the 1 st time-frequency resource matching the size of the data packet of one time-frequency resource set of the 1 st to Q1 th other grant-free sub-slots in C × Q1 other grant-free sub-slots is selected to repeatedly transmit the data packet, the 2 nd time-frequency resource matching the size of the data packet of one time-frequency resource set of the Q1+1 nd to 2Q1 nd other grant-free sub-slots in C × Q1 other grant-free sub-slots is selected to repeatedly transmit the data packet, and so on, the C th time-frequency resource matching the size of the data packet of one time-frequency resource set of the (C-1) × Q1+1 st to C × Q1 th other grant-free sub-slots in C × Q1 other grant-free sub-slots is selected to repeatedly transmit the data packet.

It should be noted that, the time-frequency resource set of every continuous Q1 other grant-free sub-slots may be obtained according to one of the following manners: indicating to the terminal equipment through signaling; implicitly derived from the reference signal, for example, it is assumed that each consecutive Q1 other grant-free sub-slots include 4 time-frequency resource sets (i.e. the product of Q2 and Q1 or the number of terminal devices sharing the 1 st grant-free sub-slot time-frequency resource set is equal to 4), in this case, the reference signals are divided into 4 classes, the 4 classes of reference signals are in one-to-one correspondence with the 4 time-frequency resource sets, and the time-frequency resource set corresponding to the class of the reference signal configured to the terminal device is the time-frequency resource set for the terminal device to repeatedly send data packets. It should be noted that the time frequency resource set indicated to the terminal device by the signaling or implicitly obtained according to the reference signal is a logical time frequency resource set, and for different times of repeated transmission, for example, the 1 st repeated transmission of the data packet in the 1 st other grant-free sub-slot to the Q1 th other grant-free sub-slot and the 2 nd repeated transmission of the data packet in the Q1+1 st other grant-free sub-slot to the 2Q1 nd other grant-free sub-slot, the same logical time frequency resource set may be mapped to different physical time frequency resource sets.

For an initial transmission and each repeated transmission of a data packet, the code words of the data packet are scrambled according to different scrambling codes. The method ensures that the receiving energy of the target signal is improved by terminal equipment in a multiple way by combining the signals sent for multiple times, and simultaneously avoids the multiple accumulation of the energy of the interference signal.

Optionally, the selecting X different grant-free time slots to sequentially send X data packets includes: the HARQ process for each of the X different grant-free slots is different.

In an optional embodiment, when one of the X data packets is retransmitted in a granted manner, the resource grant information for retransmission includes an index of a HARQ process used by the data packet.

This embodiment is illustrated below with reference to an alternative embodiment.

Alternative embodiment 1

Fig. 3 is a diagram illustrating a data packet transmission according to an alternative embodiment.

In the present embodiment, it is assumed that one grant-free occasion of a pre-configured grant-free resource pool comprises 4 grant-free time slots. Each grant-free time slot comprises a plurality of grant-free sub-time slots, the 1 st grant-free sub-time slot comprises 1 time frequency resource set, the set comprises 4 types of time frequency resources with different sizes, which are represented as a time frequency resource 1, a time frequency resource 2, a time frequency resource 3 and a time frequency resource 4, the size of the time frequency resource 1 is the minimum, and the size of the time frequency resource 4 is the maximum. Imagine that each kind of time frequency resources is used to carry data packets of different sizes, i.e. 4 kinds of time frequency resources are respectively used to carry data packets of 4 different sizes; if the 4 different data packet sizes are represented as P1, P2, P3, and P4 in sequence from small to large, time-frequency resource 1 is used to carry a data packet with a data packet size of P1, time-frequency resource 2 is used to carry a data packet with a data packet size of P2, time-frequency resource 3 is used to carry a data packet with a data packet size of P3, and time-frequency resource 4 is used to carry a data packet with a data packet size of P4.

In the present embodiment, it is assumed that the number of packets is 1 and the size is P2; the terminal equipment selects the 3 rd grant-free time slot of one grant-free opportunity of the pre-configured resource pool to send the data packet with the size of P2. Specifically, the terminal device selects a time frequency resource 2, which is matched with the data packet size P2, of the time frequency resource set of the 1 st grant-free sub-time slot of the time slot to initially send the data packet; the data packet with the size P2 is repeatedly transmitted by using other grant-free sub-slots besides the 1 st grant-free sub-slot, and the specific manner of repeated transmission can refer to one of the six to eight alternative embodiments.

It should be noted that, in practical application, the terminal device selects which one of the grant-free time slots of a grant-free time to send a packet with the size of P2 depends on the terminal device itself, but for this embodiment, the terminal device selects the 3 rd grant-free time slot; in addition, if there are multiple time frequency resources of the same class in one time frequency resource set, for example, there are multiple time frequency resources 2, the terminal device selects which time frequency resource is also implemented by the terminal device itself.

Alternative embodiment two

Fig. 4 is a diagram illustrating a data packet transmission according to a second alternative embodiment.

In the present embodiment, it is assumed that one grant-free occasion of a pre-configured grant-free resource pool comprises 4 grant-free time slots. Each grant-free time slot comprises a plurality of grant-free sub-time slots, the 1 st grant-free sub-time slot comprises 1 time frequency resource set, the set comprises 4 types of time frequency resources with different sizes, which are represented as a time frequency resource 1, a time frequency resource 2, a time frequency resource 3 and a time frequency resource 4, the size of the time frequency resource 1 is the minimum, and the size of the time frequency resource 4 is the maximum. Imagine each kind of time frequency resources to be used for carrying the data packet of different size, namely 4 kinds of time frequency resources are used for carrying 4 kinds of data packets of different sizes separately; if the 4 different data packet sizes are represented as P1, P2, P3, and P4 in sequence from small to large, time-frequency resource 1 is used to carry a data packet with a data packet size of P1, time-frequency resource 2 is used to carry a data packet with a data packet size of P2, time-frequency resource 3 is used to carry a data packet with a data packet size of P3, and time-frequency resource 4 is used to carry a data packet with a data packet size of P4.

In this embodiment, assume that the number of packets is 1 and the size is P5, where P5 is equal to 2 times P4 (larger than the maximum packet size P4 supported by the time-frequency resource set); the terminal device selects two consecutive grant-free time slots (1 st and 2 nd grant-free time slots) of one grant-free opportunity of the pre-configured resource pool to continuously transmit the data packet with the size of P5. Specifically, the terminal device selects time-frequency resource 4 of the time-frequency resource set of the 1 st grant-free sub-slot of the 1 st grant-free time slot to initially transmit the data packet and repeatedly transmits the data packet with the size of P5 by using other grant-free sub-slots except the 1 st grant-free sub-slot, and a specific manner of repeated transmission may refer to one of the sixth to eighth optional embodiments; then, the terminal device continues to select time-frequency resource 4 of the time-frequency resource set of the 1 st grantless sub-slot of the 2 nd grantless time slot to initially transmit the data packet and repeatedly transmit the data packet with size P5 by using other grantless sub-slots except the 1 st grantless sub-slot, and the specific manner of repeated transmission may refer to one of the six to eight optional embodiments.

Note that the above-described continuous transmission is equivalent to repeated transmission at a slot level.

It should be noted that, in practical application, the terminal device selects which two consecutive grant-free time slots of one grant-free opportunity to send the data packet with the size of P5 depends on the terminal device itself, but for this embodiment, the terminal device selects the 1 st and 2 nd grant-free time slots. In addition, if a plurality of time frequency resources of the same class exist in one time frequency resource set, for example, a plurality of time frequency resources 4 exist, the terminal device selects which time frequency resource is realized by depending on the terminal device itself; in order to reduce the blind detection complexity of the base station, in two consecutive grant-free time slots, it is feasible to implicitly determine the time-frequency resources occupied in the latter according to the time-frequency resources occupied in the former.

Alternative embodiment three

Fig. 5 is a diagram illustrating a process of sending scheduling request information according to a third alternative embodiment.

In this embodiment, assume that the number of packets is 1 and the size is P6, where P6 is equal to 2 times P4 (larger than the maximum packet size P4 supported by the time-frequency resource set); the terminal equipment selects the 1 st grant-free time slot of a grant-free opportunity of the pre-configured resource pool to send a data packet with the size of P1, the data packet with the size of P1 carries scheduling request information but does not carry data information, and the scheduling request information is used for informing the network side that the terminal has a data packet with the size of P6 to wait for sending. Specifically, the terminal device selects time frequency resource 1 of the time frequency resource set of the 1 st grant-free sub-slot of the slot, which is matched with the data packet size P1, to initially transmit the data packet with the size of P1; the data packet with the size P1 is repeatedly transmitted by using other grant-free sub-slots except the 1 st grant-free sub-slot, and the specific manner of repeated transmission can refer to one of the six to eight alternative embodiments.

After sending scheduling request information, the terminal equipment monitors and receives resource grant information from a network side, wherein the resource grant information is used for indicating the size and the position of a time-frequency resource of a data packet with the size of P6 sent by the terminal; after receiving the resource grant information, the terminal device assumes that the scheduling request information is successfully received and sends a data packet with a size of P6 on the time-frequency resource indicated by the resource grant information.

It should be noted that, in practical application, the terminal device selects which one of the grant-free time slots of a grant-free time to send a packet with the size of P1 depends on the terminal device itself, but for this embodiment, the terminal device selects the 1 st grant-free time slot; in addition, if there are multiple time frequency resources of the same class in one time frequency resource set, for example, there are multiple time frequency resources 1, the terminal device selects which time frequency resource is also implemented depending on the terminal device itself.

It should be noted that, in this embodiment, it is assumed that one time-frequency resource set includes 4 types of time-frequency resources with different sizes and that the size of the data packet carrying the scheduling request information is matched with the smallest time-frequency resource (i.e., time-frequency resource 1) in the time-frequency resource set, but in actual application, the smallest time-frequency resource matched with the size of the data packet carrying the scheduling request information may also be matched with another data packet size, that is, matched with the sizes of two data packets; the method ensures that the minimum time-frequency resource can be used for transmitting other data packets besides scheduling request information, thereby being beneficial to improving the resource utilization rate of the minimum time-frequency resource.

Alternative embodiment four

Fig. 6 is a schematic diagram of a data packet according to a fourth alternative embodiment.

In the present embodiment, it is assumed that the number of packets is 2 and the sizes are P3 and P2, respectively; the terminal device selects two different grant-free time slots (1 st and 3 rd grant-free time slots) of one grant-free opportunity of the pre-configured resource pool to respectively send a data packet with the size of P3 and a data packet with the size of P2. Specifically, the terminal device selects time frequency resource 3 of the time frequency resource set of the 1 st grant-free sub-slot of the 1 st slot, which matches with the data packet size P3, to initially transmit the data packet with the size P3 and repeatedly transmit the data packet with the size P3 by using other grant-free sub-slots except for the 1 st grant-free sub-slot, where a specific manner of repeated transmission may refer to one of the sixth to eighth optional embodiments; selecting time frequency resource 2 of the time frequency resource set of the 1 st grant-free sub-slot of the 3 rd slot, which matches with the data packet size P2, to initially transmit the data packet with the size P2 and repeatedly transmit the data packet with the size P2 by using other grant-free sub-slots except for the 1 st grant-free sub-slot, where a specific manner of the repeated transmission may refer to one of the sixth to the eighth optional embodiments.

It should be noted that, in practical application, the terminal device selects which two grantless time slots of the grantless opportunity to respectively send the data packet with the size of P3 and the data packet with the size of P2 depends on the terminal device itself to implement, but for the terminal device of this embodiment, the terminal device selects the 1 st grantless time slot and the 3 rd grantless time slot; if there are multiple time-frequency resources of the same class in one time-frequency resource set, for example, there are multiple time-frequency resources 2 and multiple time-frequency resources 3, the terminal device selects which time-frequency resource is also realized by the terminal device itself.

It should be noted that, as an optimal mode, the 4 grant-free slots of one grant-free time may be used to send multiple data packets from the same terminal device, and for example, the 1 st grant-free slot to the 4 th grant-free slot correspond to HARQ processes 1 to 4 in sequence. Specifically, in this embodiment, the HARQ process 1 and the HARQ process 3 are occupied by data packets with sizes P3 and P2, respectively. In this case, when a data packet needs to be retransmitted in a grant manner, the resource grant information for retransmission may include an index of a HARQ process used by the data packet to identify different processes, where the HARQ process is a HARQ process corresponding to a grant-free slot for transmitting the data packet.

Alternative embodiment five

Fig. 7 is a diagram illustrating a fifth alternative embodiment of sending a first packet.

In the present embodiment, it is assumed that the number of packets is 2 and is a first packet of size P4 and a second packet of size P7, respectively, where P7 is greater than 4 times P4; the terminal equipment selects a 1 st grant-free time slot of a grant-free opportunity of a pre-configured resource pool to send a first data packet with the size of P4, the data packet with the size of P4 carries scheduling request information and data information at the same time, and the scheduling request information is used for informing a network side that the terminal has a data packet with the size of P7 to wait for sending. Specifically, the terminal device selects a time frequency resource 4 of the time frequency resource set of the 1 st grant-free sub-slot of the slot, which is matched with the data packet size P4, to initially transmit a first data packet with the size of P4; the first data packet with the size P4 is repeatedly transmitted by using other sub-slots except the 1 st grant-free sub-slot, and the specific manner of repeated transmission can refer to one of the six to eight alternative embodiments.

After the terminal equipment sends a first data packet with the size of P4, monitoring and receiving resource grant information from a network side, wherein the resource grant information is used for indicating the size and the position of a time-frequency resource of a second data packet with the size of P7 sent by the terminal equipment; after receiving the resource grant information, the terminal device assumes that the first data packet is successfully received and sends a second data packet with the size of P7 on the time-frequency resource indicated by the resource grant information.

It should be noted that, in practical application, the terminal device selects which one of the grant-free time slots of a grant-free time to send the first packet with the size of P4 depends on the terminal device itself, but for this embodiment, the terminal device selects the 1 st grant-free time slot; if there are multiple time-frequency resources of the same class in one time-frequency resource set, for example, there are multiple time-frequency resources 4, the terminal device selects which time-frequency resource is realized by the terminal device itself.

Alternative embodiment six

Fig. 8 is a diagram illustrating a data packet repeatedly transmitted in a grant-free slot according to a sixth alternative embodiment.

In this embodiment, it is assumed that one grant-free slot includes 3 grant-free sub-slots, the 1 st grant-free sub-slot is used for the initial transmission of the data packet, and the 2 nd and 3 rd grant-free sub-slots are used for the repeated transmission of the data packet. The 1 st grant-free sub-time slot comprises 1 time frequency resource set, wherein the time frequency resource set comprises 4 types of time frequency resources with different sizes, namely a time frequency resource 1, a time frequency resource 2, a time frequency resource 3 and a time frequency resource 4, wherein the time frequency resource 1 has the smallest size, and the time frequency resource 4 has the largest size. Imagine 4 terminal equipments to share the only time frequency resource set of the 1 st grant-free sub-slot; each of the 2 nd and 3 rd grant-free sub-slots includes 4 time-frequency resource sets, that is, the number of the time-frequency resource sets included in each of the 2 nd and 3 rd grant-free sub-slots is equal to the number of terminal devices sharing the 1 st grant-free sub-slot time-frequency resource set. Similarly, each set of time frequency resources included in each of the 2 nd and 3 rd grant-free sub-slots also includes 4 classes of time frequency resources with different sizes, i.e., time frequency resource 1, time frequency resource 2, time frequency resource 3, and time frequency resource 4. The size of each class of time-frequency resources of one time-frequency resource set of each of the 2 nd and 3 rd non-granted sub-slots is 1/T1 of the same class of time-frequency resources of the 1 st non-granted sub-slot time-frequency resource set, where T1 is equal to the number of time-frequency resource sets included in each of the 2 nd and 3 rd non-granted sub-slots, i.e., the size of each class of time-frequency resources of one time-frequency resource set of each of the 2 nd and 3 rd non-granted sub-slots is 1/4 of the same class of time-frequency resources of the 1 st non-granted sub-slot time-frequency resource set.

Imagine each kind of time frequency resources to be used for carrying the data packet of different size, namely 4 kinds of time frequency resources are used for carrying 4 kinds of data packets of different sizes separately; if the 4 different data packet sizes are represented as P1, P2, P3 and P4 in sequence from small to large, time-frequency resource 1 is used for carrying a data packet with a data packet size of P1, time-frequency resource 2 is used for carrying a data packet with a data packet size of P2, time-frequency resource 3 is used for carrying a data packet with a data packet size of P3, and time-frequency resource 4 is used for carrying a data packet with a data packet size of P4.

In this embodiment, it is assumed that the terminal device 1 selects the grant-free timeslot to send a packet with a size of P2; in this case, the terminal device 1 selects the time-frequency resource 2 of the time-frequency resource set of the 1 st sub-slot of the time slot to initially transmit the data packet, selects the time-frequency resource 2 of the 1 st time-frequency resource set of the 2 nd sub-slot of the time slot to transmit the data packet 2 nd time, and selects the time-frequency resource 2 of the 1 st time-frequency resource set of the 3 rd sub-slot of the time slot to transmit the data packet 3 rd time. The final effect is to select the time frequency resource 2 of one time frequency resource set of every 1 other grant-free sub-slot to repeatedly transmit the data packet 1 time, and repeatedly transmit the data packet 2 times (corresponding to 2 other grant-free sub-slots).

No longer limited to the idea of the present embodiment, if the terminal device 2 also selects the grant-free time slot to transmit the data packet with the size of P2; in this case, the terminal device 2 selects the time-frequency resource 2 of the time-frequency resource set of the 1 st sub-slot of the time slot to initially transmit the data packet, selects the time-frequency resource 2 of the 2 nd time-frequency resource set of the 2 nd sub-slot of the time slot to transmit the data packet for the 2 nd time, and selects the time-frequency resource 2 of the 2 nd time-frequency resource set of the 3 rd sub-slot of the time slot to transmit the data packet for the 3 rd time. Similarly, if the terminal device 3 also selects the grant-free time slot to transmit the data packet with the size of P2; in this case, the terminal device 3 selects the time-frequency resource 2 of the time-frequency resource set of the 1 st sub-slot of the time slot to initially transmit the data packet, selects the time-frequency resource 2 of the 3 rd time-frequency resource set of the 2 nd sub-slot of the time slot to transmit the data packet for the 2 nd time, and selects the time-frequency resource 2 of the 3 rd time-frequency resource set of the 3 rd sub-slot of the time slot to transmit the data packet for the 3 rd time. If terminal device 4 also selects the grant-free time slot to send a packet of size P2; in this case, the terminal device 4 selects the time-frequency resource 2 of the time-frequency resource set of the 1 st sub-slot of the time slot to initially transmit the data packet, selects the time-frequency resource 2 of the 4 th time-frequency resource set of the 2 nd sub-slot of the time slot to transmit the data packet for the 2 nd time, and selects the time-frequency resource 2 of the 4 th time-frequency resource set of the 3 rd sub-slot of the time slot to transmit the data packet for the 3 rd time. It should be noted that, if there are multiple time frequency resources of the same type in one time frequency resource set, the terminal device selects which time frequency resource depends on the terminal device itself.

Alternative embodiment seven

Fig. 9 is a diagram of repeatedly transmitting a data packet in a grant-free slot according to a seventh alternative embodiment.

In this embodiment, it is assumed that one grant-free timeslot includes 5 grant-free sub-timeslots, the 1 st grant-free sub-timeslot is used for the initial transmission of the data packet, and the 2 nd to 5 th grant-free sub-timeslots are used for the repeated transmission of the data packet. The 1 st grant-free sub-time slot comprises 1 time frequency resource set, wherein the time frequency resource set comprises 4 types of time frequency resources with different sizes, namely a time frequency resource 1, a time frequency resource 2, a time frequency resource 3 and a time frequency resource 4, wherein the time frequency resource 1 has the smallest size, and the time frequency resource 4 has the largest size. Imagine 4 terminal equipments to share the only time frequency resource set of the 1 st grant-free sub-slot; each of the 2 nd to 5 th grant-free sub-slots includes 2 sets of time-frequency resources of the same size, that is, the number of sets of time-frequency resources included in each consecutive 2 sub-slots of the 2 nd to 5 th grant-free sub-slots is equal to the number of terminal devices sharing the 1 st set of time-frequency resources of the grant-free sub-slot. Similarly, each set of time frequency resources included in each of the 2 nd to 5 th grant-free sub-slots also includes 4 classes of time frequency resources with different sizes, i.e., time frequency resource 1, time frequency resource 2, time frequency resource 3, and time frequency resource 4. The size of each class of time-frequency resources of one time-frequency resource set of each of the 2 nd to 5 th non-granted sub-slots is 1/T2 of the same class of time-frequency resources of the 1 st non-granted sub-slot time-frequency resource set, where T2 is equal to the number of time-frequency resource sets included in each of the 2 nd to 5 th non-granted sub-slots, that is, the size of each class of time-frequency resources of one time-frequency resource set of each of the 2 nd to 5 th non-granted sub-slots is half of the size of the same class of time-frequency resources of the 1 st non-granted sub-slot time-frequency resource set.

In this embodiment, it is assumed that the terminal device 1 selects the grant-free time slot to transmit a packet with a size of P2; in this case, the terminal device 1 selects the time-frequency resource 2 of the time-frequency resource set of the 1 st sub-slot of the time slot to initially transmit the data packet, selects the time-frequency resource 2 of the 1 st time-frequency resource set of the 2 nd sub-slot of the time slot to transmit the data packet for the 2 nd time, and selects the time-frequency resource 2 of the 1 st time-frequency resource set of the 4 th sub-slot of the time slot to transmit the data packet for the 3 rd time. The final achieved effect is: and selecting the time frequency resource 2 of one time frequency resource set of every continuous 2 other grant-free sub-time slots to repeatedly send the data packet for 1 time, and repeatedly sending the data packet for 2 times.

It is no longer limited to the idea of the embodiment, if the terminal device 2 also selects the grant-free time slot to transmit the data packet with the size of P2; in this case, the terminal device 2 selects the time-frequency resource 2 of the time-frequency resource set of the 1 st sub-slot of the time slot to initially transmit the data packet, selects the time-frequency resource 2 of the 2 nd time-frequency resource set of the 2 nd sub-slot of the time slot to transmit the data packet for the 2 nd time, and selects the time-frequency resource 2 of the 2 nd time-frequency resource set of the 4 th sub-slot of the time slot to transmit the data packet for the 3 rd time. Similarly, if the terminal device 3 also selects the grant-free time slot to transmit the data packet with the size of P2; in this case, the terminal device 3 selects the time-frequency resource 2 of the time-frequency resource set of the 1 st sub-slot of the time slot to initially transmit the data packet, selects the time-frequency resource 2 of the 1 st time-frequency resource set of the 3 rd sub-slot of the time slot to transmit the data packet for the 2 nd time, and selects the time-frequency resource 2 of the 1 st time-frequency resource set of the 5 th sub-slot of the time slot to transmit the data packet for the 3 rd time. If terminal device 4 also selects the grant-free time slot to send a packet of size P2; in this case, the terminal device 4 selects the time-frequency resource 2 of the time-frequency resource set of the 1 st sub-slot of the time slot to initially transmit the data packet, selects the time-frequency resource 2 of the 2 nd time-frequency resource set of the 3 rd sub-slot of the time slot to transmit the data packet for the 2 nd time, and selects the time-frequency resource 2 of the 2 nd time-frequency resource set of the 5 th sub-slot of the time slot to transmit the data packet for the 3 rd time. It should be noted that, if there are multiple time frequency resources of the same type in one time frequency resource set, the terminal device selects which time frequency resource depends on the terminal device itself.

Alternative embodiment eight

Fig. 10 is a diagram illustrating an eighth alternative embodiment of repeatedly transmitting a data packet in a grant-free time slot.

In this embodiment, it is assumed that one grant-free timeslot includes 4 grant-free sub-timeslots, the 1 st grant-free sub-timeslot is used for the initial transmission of the data packet, and the other grant-free sub-timeslots are used for the repeated transmission of the data packet. Each grant-free sub-time slot comprises 1 time frequency resource set, the time frequency resource set comprises 4 types of time frequency resources with different sizes, namely a time frequency resource 1, a time frequency resource 2, a time frequency resource 3 and a time frequency resource 4, the time frequency resource 1 is the smallest in size, and the time frequency resource 4 is the largest in size. The size of each class of time frequency resources of the time frequency resource sets of other non-grant sub-time slots is the same as that of the same class of time frequency resources of the time frequency resource set of the 1 st non-grant sub-time slot.

In the present embodiment, it is assumed that a terminal device selects the grant-free time slot to transmit a packet with the size P2. In this case, the terminal device selects time-frequency resource 2 of the time-frequency resource set of the 1 st sub-slot of the time slot to initially transmit the data packet, wherein the code word of the data packet is scrambled by the 1 st scrambling code; selecting the time frequency resource 2 of the time frequency resource set of the 2 nd sub-time slot of the time slot to transmit the data packet for the 2 nd time, wherein the code word of the data packet is scrambled by the 2 nd scrambling code; selecting the time frequency resource 2 of the time frequency resource set of the 3 rd sub-time slot of the time slot to transmit the data packet for the 3 rd time, wherein the code word of the data packet is scrambled by a 3 rd scrambling code; and selecting the time frequency resource 2 of the time frequency resource set of the 4 th sub-time slot of the time slot to transmit the data packet for the 4 th time, wherein the code word of the data packet is scrambled by the 4 th scrambling code. Finally, the data packet is repeatedly transmitted 1 time on the time frequency resource 2 of the time frequency resource set of each other sub-time slot, and the data packet is repeatedly transmitted 3 times (corresponding to 3 other grant-free sub-time slots). It should be noted that, if there are multiple time frequency resources of the same type in one time frequency resource set, the terminal device selects which time frequency resource depends on the terminal device itself.

With regard to the present invention, it should be additionally noted that the grant-free opportunity/slot is also referred to as a scheduling-free opportunity/slot. A Packet (Packet) is also called a Transport Block (TB). The scheduling request information is also called a Buffer State Report (BSR); the scheduling request information may include, in addition to the size information of the data packet to be transmitted, Modulation and Coding Scheme (MCS) information that is suggested to be used. The grant-free time slot corresponds to or is equivalent to a time domain section or a time domain allocation unit; one grant-free time slot may include a plurality of grant-free sub-time slots; in this case, the 1 st grant-free sub-slot is used for the initial transmission of the data packet, and the other grant-free sub-slots are used for the repeated transmission of the data packet; in other words, the data packet is repeatedly transmitted multiple times within one grant-free slot. If not, the resource pool is equivalent to a pre-configured resource pool; the time frequency resource is a logical time frequency resource, and the time frequency of the physical resource block actually mapped to the time frequency resource can be continuous or discontinuous; so-called adjacency of time-frequency resources or adjacency of time slots/subslots is also logically adjacency or adjacency, and corresponding physical resources are not necessarily adjacency or adjacency.

If not specifically indicated, the repeated transmission in the present invention refers to automatic repeated transmission at the level of the grant-free sub-slot without depending on negative NACK feedback from the network side, similar to the transmission time interval Bundling (Bundling) transmission scheme of the LTE system (repeated transmission at the level of the grant-free sub-slot does not mean that each grant-free sub-slot is transmitted, and may be repeated for 1 time per consecutive multiple grant-free sub-slots); the retransmission in the present invention refers to the repeated transmission at the grant-free slot level triggered by NACK feedback or resource grant information from the network side, and is similar to HARQ retransmission of the LTE system. In other words, one transmission at the grant-less slot level (HARQ first or retransmission) includes one or more transmissions at the grant-less sub-slot level (initial transmission and repeated transmission).

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing the relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a magnetic or optical disk, and the like. Alternatively, all or part of the steps of the above embodiments may be implemented using one or more integrated circuits. Accordingly, each module/unit in the above embodiments may be implemented in the form of hardware, and may also be implemented in the form of a software functional module. The present invention is not limited to any specific form of combination of hardware and software.

The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

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

Example 2

In this embodiment, a terminal device is further provided, and the terminal device is used to implement the foregoing embodiments and preferred embodiments, and details of which have been already described are omitted. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.

Fig. 11 is a block diagram of a terminal device according to an embodiment of the present invention, and as shown in fig. 11, the terminal device includes a processor 112 and a memory 114 storing instructions executable by the processor, and when the instructions are executed by the processor, the following operations are performed: the data packets are transmitted according to the number of data packets and/or the channel quality indicator.

By the data sending method, the data packets are sent according to the number of the data packets and/or the channel quality index, the problem that a specific using mechanism of the granting and non-granting sending modes is not provided in the related technology or how to realize the mutual conversion of the granting and non-granting sending modes is solved, and the technical effect of improving the efficiency of the non-granting sending mode is achieved.

when the number of the data packets is N and the channel quality index does not exceed a first threshold value, wherein N is an integer greater than 1, the data packets are sent in the following way: selecting one grant-free time slot of one grant-free time of a pre-configured resource pool to send scheduling request information, or selecting one or N terminal-specific scheduling request resources to send scheduling request information, monitoring and receiving N resource grant information from a network side, and sequentially sending the N data packets according to the N resource grant information.

In this embodiment, there is also provided a terminal device, as shown in fig. 12, the terminal device includes: a processor 122 and a memory 124 storing processor-executable instructions that, when executed by the processor, perform the following: when X data packets need to be sent in a grant-free mode, X different grant-free time slots are selected to send the X data packets in sequence,

Through the terminal equipment in the embodiment, when X data packets need to be sent in a grant-free mode, X different grant-free time slots are selected to send the X data packets in sequence, and therefore the problem of how to send a plurality of data packets in a grant-free mode is solved.

In an optional embodiment, selecting X different grant-free slots to sequentially transmit the X data packets includes: for any data packet in the X data packets, selecting a time frequency resource which is matched with the size of the data packet and is in a time frequency resource set of a 1 st grant-free sub time slot to initially send the data packet; when the number of the grant-free sub-time slots included in the grant-free time slot exceeds 1, repeatedly transmitting the data packet by using other grant-free sub-time slots except for the 1 st grant-free sub-time slot; wherein the 1 st grant-free sub-slot is a 1 st grant-free sub-slot of a grant-free slot for transmitting the data packet. The transmission reliability of the data packets is further improved by enabling the repeated transmission of the data packets.

Optionally, when the number of the grant-free sub-slots included in the grant-free slot exceeds 1, repeatedly transmitting the data packet using the other grant-free sub-slots except for the 1 st grant-free sub-slot includes: selecting the time frequency resource of the time frequency resource set of each other non-grant sub-time slot, which is matched with the size of the data packet, to repeatedly transmit the data packet for 1 time, wherein each other non-grant sub-time slot comprises 1 time frequency resource set, and the size of each type of time frequency resource of the set is the same as that of the same type of time frequency resource of the time frequency resource set of the 1 st non-grant sub-time slot;

for example, if S (more than 1 integer) other non-grant sub-slots exist, the 1 st time-frequency resource of the time-frequency resource set of the 1 st other non-grant sub-slot in the S other non-grant sub-slots that matches the size of the data packet is selected to repeatedly transmit the data packet, the 2 nd time-frequency resource of the time-frequency resource set of the 2 nd other non-grant sub-slot in the S other non-grant sub-slots that matches the size of the data packet is selected to repeatedly transmit the data packet, and so on, the S nd time-frequency resource of the time-frequency resource set of the S th other non-grant sub-slot in the S other non-grant sub slots that matches the size of the data packet is selected to repeatedly transmit the data packet.

Or selecting the time frequency resource, which is matched with the size of the data packet, of one time frequency resource set of every continuous Q1 other grant-free sub-time slots to repeatedly send the data packet for 1 time, wherein each other grant-free sub-time slot comprises Q2 time frequency resource sets, the product of the Q2 and the Q1 is equal to the number of terminal devices sharing the time frequency resource set of the 1 st grant-free sub-time slot, the size of each class of time frequency resource of the time frequency resource sets of the other grant-free sub-time slots is 1/Q2 of the size of the same class of time frequency resource of the time frequency resource set of the 1 st grant-free sub-time slot, and the Q1 and Q2 are integers greater than 0. The method determines the number of the time-frequency resource sets for 1-time data packet repeated transmission according to the number of the terminal devices sharing the 1 st grant-free sub-time-frequency resource set, and ensures that the data packets from different terminal devices (sharing the 1 st grant-free sub-time-frequency resource set) can not collide during the repeated transmission of the data packets; in addition, the method avoids additional overhead caused by the increase of the number of the time frequency resource sets by limiting the size of the time frequency resource sets used for repeatedly sending the data packets.

It should be noted that, the time-frequency resource set of each consecutive Q1 other grant-free sub-slots can be obtained according to one of the following manners: indicating to the terminal equipment through signaling; implicitly derived from the reference signal, for example, it is assumed that each consecutive Q1 other grant-free sub-slots include 4 time-frequency resource sets (i.e. the product of Q2 and Q1 or the number of terminal devices sharing the 1 st grant-free sub-slot time-frequency resource set is equal to 4), in this case, the reference signals are divided into 4 classes, the 4 classes of reference signals are in one-to-one correspondence with the 4 time-frequency resource sets, and the time-frequency resource set corresponding to the class of the reference signal configured to the terminal device is the time-frequency resource set for the terminal device to repeatedly send data packets. It should be noted that the time frequency resource set indicated to the terminal device by the signaling or implicitly obtained according to the reference signal is a logical time frequency resource set, and for different times of repeated transmission, for example, the 1 st repeated transmission of the data packet in the 1 st other grant-free sub-slot to the Q1 th other grant-free sub-slot and the 2 nd repeated transmission of the data packet in the Q1+1 st other grant-free sub-slot to the 2Q1 nd other grant-free sub-slot, the same logical time frequency resource set may be mapped to different physical time frequency resource sets.

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

Example 3

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

s1, the data packet is transmitted according to the number of data packets and/or the channel quality index.

s2, when there are X data packets to be sent in the non-grant mode, selecting X different non-grant time slots to send the X data packets in turn,

Optionally, in this embodiment, the storage medium may include, but is not limited to: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

Alternatively, in the present embodiment, the processor executes the above step S1 according to the program code stored in the storage medium.

Alternatively, in the present embodiment, the processor executes the above step S2 according to the program code stored in the storage medium.

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

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

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

Claims

1. A method of transmitting data, comprising:

transmitting the data packets according to the number of the data packets and/or the channel quality index;

wherein the sending the data packets according to the number of data packets and/or the channel quality indicator comprises at least one of:

when the number of the data packets is 1, or when the number of the data packets is 1 and the channel quality indicator exceeds a first threshold value, the data packets are sent in the following way: selecting a grant-free time slot of a grant-free opportunity of a pre-configured resource pool to send the data packet; or selecting M continuous grant-free time slots to continuously send the data packets, wherein the M continuous grant-free time slots belong to the same or different grant-free opportunities of a pre-configured resource pool, and M is an integer greater than 1; or selecting a grant-free time slot of a grant-free time of a pre-configured resource pool or selecting a terminal-specific scheduling request resource to send scheduling request information, monitoring and receiving the resource grant information from the network side, and sending the data packet according to the resource grant information;

when the number of the data packets is N, or when the number of the data packets is N and the channel quality indicator exceeds a first threshold value, the data packets are sent in the following manner, where N is an integer greater than 1: selecting N different grant-free time slots to sequentially send the N data packets, wherein the N different grant-free time slots belong to the same or different grant-free time of a pre-configured resource pool; or selecting N-1 different grant-free time slots to sequentially send the 1 st to N-1 th data packets in the N data packets, monitoring and receiving resource grant information from a network side, and sending the N data packets in the N data packets according to the resource grant information, wherein the N-1 different grant-free time slots belong to the same or different grant-free time of a preconfigured resource pool, and each data packet in the 1 st to N-1 th data packets carries scheduling request information;

when the number of the data packets is 1 and the channel quality index does not exceed a first threshold value, the data packets are sent in the following way: selecting a grant-free time slot of a grant-free time of a pre-configured resource pool or selecting a terminal-specific scheduling request resource to send scheduling request information, monitoring and receiving resource grant information from a network side, and sending the data packet according to the resource grant information;

2. The method of claim 1, wherein the channel quality indicator comprises: the reference signal received power.

3. The method of claim 1, wherein the pre-configured resource pool comprises at least one of the following characteristics: the grant-free time of the pre-configured resource pool appears periodically; one grant-free occasion of the pre-configured resource pool comprises at least one grant-free time slot.

4. The method of claim 3,

the hybrid automatic repeat request HARQ process corresponding to each of the grant-free time slots included in the one grant-free opportunity is different.

5. A terminal device, comprising:

a processor and a memory storing processor-executable instructions that, when executed by the processor, perform the following: transmitting the data packets according to the number of the data packets and/or the channel quality index;

the terminal device is further configured to perform at least one of the following operations:

when the number of the data packets is 1, or when the number of the data packets is 1 and the channel quality indicator exceeds a first threshold value, the data packets are sent in the following manner: selecting a grant-free time slot of a grant-free opportunity of a pre-configured resource pool to send the data packet; or selecting M continuous grant-free time slots to continuously send the data packets, wherein the M continuous grant-free time slots belong to the same or different grant-free opportunities of a pre-configured resource pool, and M is an integer greater than 1; or selecting a grant-free time slot of a grant-free time of a pre-configured resource pool or selecting a terminal-specific scheduling request resource to send scheduling request information, monitoring and receiving the resource grant information from the network side, and sending the data packet according to the resource grant information;

when the number of the data packets is N, or when the number of the data packets is N and the channel quality indicator exceeds a first threshold value, the data packets are sent in the following manner, where N is an integer greater than 1: selecting N different grant-free time slots to sequentially send the N data packets, wherein the N different grant-free time slots belong to the same or different grant-free time of a pre-configured resource pool; or selecting N-1 different grant-free time slots to sequentially send the 1 st to N-1 st data packets in the N data packets, monitoring and receiving resource grant information from a network side, and sending the N data packets in the N data packets according to the resource grant information, wherein the N-1 different grant-free time slots belong to the same or different grant-free time of a preconfigured resource pool, and each data packet in the 1 st to N-1 st data packets carries scheduling request information;