CN111586845B

CN111586845B - Transmission method and indication method of data channel, terminal and network side equipment

Info

Publication number: CN111586845B
Application number: CN201910116853.4A
Authority: CN
Inventors: 邢艳萍; 艾托尼
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2019-02-15
Filing date: 2019-02-15
Publication date: 2023-02-24
Anticipated expiration: 2039-02-15
Also published as: CN111586845A

Abstract

The invention provides a transmission method, an indication method, a terminal and network side equipment of a data channel, wherein the method comprises the following steps: determining a transmission mechanism adopted by a data channel according to the indication of network side equipment, wherein the transmission mechanism is a short time slot repeated transmission mechanism or a multi-segment transmission mechanism; adopting a determined transmission mechanism to send or receive a plurality of data channels; the method comprises the steps that a plurality of sent or received data channels are used for transmitting the same transmission block, and the same data channel is not sent or received across time slots; in the embodiment of the invention, the network side equipment indicates the terminal data to adopt different transmission mechanisms according to different requirements, so that the terminal can be switched between the two transmission mechanisms, thereby adapting to different application scenes and fully utilizing the advantages of the two transmission mechanisms.

Description

Transmission method and indication method of data channel, terminal and network side equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a transmission method, an indication method, a terminal, and a network device for a data channel.

Background

In Rel-15 NR (New Radio, new air interface), a network side notifies a terminal of a time domain resource location of a data channel (including a physical downlink shared channel PDSCH and a physical uplink shared channel PUSCH), including a symbol occupied by the data channel in a slot where the data channel is located. The symbols occupied by the data channel in the slot are represented by a starting symbol S and a number of symbols L. One data channel is not allowed to cross the slot boundary, so S + L is always equal to or less than 14 (note: one slot has 14 symbols in total).

For services with high reliability and Low Latency requirements, such as URLLC (Ultra Reliable & Low Latency Communication), if data includes a number of symbols available in the nearest slot when the data can be transmitted, which is smaller than the number of symbols required by a data channel, the data channel needs to be delayed from being transmitted because the data channel is not allowed to cross a slot boundary, which may result in additional data channel transmission Latency or reduce the number of symbols occupied by the data channel, which may reduce reliability. Therefore, the transmission mechanism of PUSCH across slot boundaries is currently under discussion at NR Release 16. The current scheme includes two types: mini-slot repetition and multi-segment transmission. In both mechanisms, the same transport block is carried by multiple PUSCHs, each not crossing slot boundaries, but different PUSCHs may cross slot boundaries.

Specifically, as shown in fig. 1, it is assumed that the PUSCH is transmitted starting from symbol #2 of slot # n for a total of 16 symbols. For mini-slot repetition, 4 times of 4-symbol repeated transmission of the PUSCH can be adopted, and 4 PUSCHs are transmitted in a "back-to-back" cascade manner in time. For multi-segment transmission, the data channel is divided into two segments by the time slot boundary, the first segment occupies the symbol #2 to the end of the time slot in the time slot # n; the second segment occupies a total of 16 symbols in slot # n +1, starting from slot to symbol 3, and each segment is an independent PUSCH.

The details of the mini-slot repetition and multi-segment transmission mechanisms are still under discussion and are not perfect at present.

Disclosure of Invention

The invention aims to provide a transmission method, an indication method, a terminal and network side equipment of a data channel, so as to solve the problem of incomplete transmission mechanism in the prior art.

In order to solve the above problem, an embodiment of the present invention provides a data channel transmission method, which is applied to a terminal, and includes:

determining a transmission mechanism adopted by a data channel according to the indication of network side equipment, wherein the transmission mechanism is a short time slot repeated transmission mechanism or a multi-segment transmission mechanism;

adopting a determined transmission mechanism to send or receive a plurality of data channels; the multiple data channels for transmission or reception are used for transmitting the same transmission block, and the same data channel is not transmitted or received across time slots.

Wherein, the determining the transmission mechanism adopted by the data channel according to the indication of the network side device includes:

determining a transmission mechanism adopted by a data channel according to first indication information which is sent by network side equipment and used for explicitly indicating the transmission mechanism adopted by the data channel;

or,

and determining a transmission mechanism adopted by the data channel according to the parameter information of the data channel indicated by the network side equipment.

Wherein the method further comprises:

and receiving the first indication information sent by the network side equipment through Radio Resource Control (RRC) signaling or Downlink Control Information (DCI).

Wherein the parameter information of the data channel comprises at least one of:

a number of repetitions of the data channel;

a transport block size, TBS, table employed by the data channel;

the number of symbols of the data channel;

the sum of the identifier of the starting symbol of the data channel and the number of symbols of the data channel;

radio network temporary identity RNTI used for scrambling and scheduling DCI of the data channel;

scheduling a search space in which the DCI of the data channel is located;

scheduling a format of the DCI of the data channel;

and scheduling the load size of the DCI of the data channel.

Wherein the method further comprises:

receiving first configuration information of a multi-segment transmission mechanism sent by a network side device, wherein the first configuration information comprises: a starting symbol of a data channel and a number L1 of symbols of said data channel.

Wherein the method further comprises:

determining a transmission time period of the data channel according to the first configuration information; wherein a set of consecutive symbol sets available for transmission of the data channel in each slot during the determined transmission time period is used for transmission of one data channel.

Wherein the transmission time period of the data channel includes any one of:

l1 symbols starting from a start symbol of the data channel;

l1 symbols which can be used for data channel transmission direction transmission starting from a start symbol of the data channel;

l1 symbols actually used for the data channel transmission starting from the starting symbol of the data channel.

If at least two groups of discontinuous symbol sets which can be used for data channel transmission exist in one time slot in the transmission time period, all symbol sets or part of symbol sets in the at least two groups of discontinuous symbol sets are used for data channel transmission; wherein the symbol set comprises a plurality of symbols in succession.

Wherein the method further comprises:

receiving second configuration information of a short slot repeat transmission mechanism sent by a network side device, wherein the second configuration information comprises: the starting symbol of the data channel, the number of symbols L2 of the data channel transmitted per short slot, and the number of repetitions of the data channel transmitted in the short slot.

Wherein, if the number of a group of consecutive symbols that can be used for the data channel transmission in a time slot is smaller than the number L2 of symbols of the data channel, the method further comprises:

deferring the data channel to a next slot transmission;

or,

canceling transmission of the data channel;

or,

and adjusting the number of the symbols of the data channel according to the number of the continuous symbols which can be used for the data channel transmission, and transmitting the data channel according to the adjusted number of the symbols.

The embodiment of the invention also provides an indication method of a transmission mechanism, which is applied to network side equipment and comprises the following steps:

determining a transmission mechanism adopted by a data channel of a terminal, wherein the transmission mechanism is a short time slot repeated transmission mechanism or a multi-segment transmission mechanism;

and indicating the transmission mechanism adopted by the data channel to the terminal.

Wherein, indicating the transmission mechanism adopted by the data channel to the terminal comprises:

sending first indication information for explicitly indicating a transmission mechanism adopted by a data channel to a terminal;

or,

and implicitly indicating a transmission mechanism adopted by the data channel to the terminal through the parameter information of the data channel.

The sending of first indication information used for explicitly indicating a transmission mechanism adopted by a data channel to a terminal includes:

and sending the first indication information to a terminal through Radio Resource Control (RRC) signaling or Downlink Control Information (DCI).

Wherein the parameter information of the data channel includes at least one of:

a number of repetitions of the data channel;

a transport block size, TBS, table employed by the data channel;

the number of symbols of the data channel;

scheduling a search space where DCI of the data channel is located;

scheduling a format of the DCI of the data channel;

scheduling a payload size of the DCI of the data channel.

Wherein the method further comprises:

sending first configuration information of a multi-segment transmission mechanism, wherein the first configuration information comprises: a starting symbol of a data channel and a number L1 of symbols of said data channel.

Wherein the first configuration information is used to indicate a transmission time period of the data channel, and a group of consecutive symbol sets that can be used for transmission of the data channel in each slot in the transmission time period is used for transmission of one data channel.

Wherein the transmission time period of the data channel includes any one of:

l1 symbols starting from a start symbol of the data channel;

l1 symbols which can be used for data channel transmission direction transmission starting from a start symbol of a data channel;

Wherein the method further comprises:

sending second configuration information of a short-slot repeat transmission mechanism, wherein the second configuration information comprises: the starting symbol of the data channel, the number of symbols L2 of the data channel transmitted per short slot, and the number of repetitions of the data channel transmitted in the short slot.

An embodiment of the present invention further provides a terminal, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor is used for reading the program in the memory and executing the following processes: determining a transmission mechanism adopted by a data channel according to the indication of network side equipment, wherein the transmission mechanism is a short time slot repeated transmission mechanism or a multi-segment transmission mechanism;

the transceiver is used for transmitting or receiving a plurality of data channels by adopting a determined transmission mechanism; the multiple data channels for transmission or reception are used for transmitting the same transmission block, and the same data channel is not transmitted or received across time slots.

Wherein the processor is further configured to:

or,

Wherein the transceiver is further configured to:

a number of repetitions of the data channel;

a transport block size, TBS, table employed by the data channel;

the number of symbols of the data channel;

scrambling a Radio Network Temporary Identifier (RNTI) used for scheduling DCI of the data channel;

scheduling a search space where DCI of the data channel is located;

scheduling a format of the DCI of the data channel;

and scheduling the load size of the DCI of the data channel.

Wherein the transceiver is further configured to:

Wherein the processor is further configured to:

determining a transmission time period of the data channel according to the first configuration information; wherein a set of consecutive symbols available for transmission of the data channel in each slot within the determined transmission time period is used for transmission of one data channel.

Wherein the transmission time period of the data channel includes any one of:

l1 symbols starting from a start symbol of the data channel;

Wherein the transceiver is further configured to:

receiving second configuration information of a short slot repeat transmission mechanism sent by a network side device, wherein the second configuration information comprises: the starting symbol of the data channel, the number of symbols L2 of the data channel transmitted in each short slot, and the number of repetitions of the data channel transmitted in the short slot.

Wherein, if the number of a group of consecutive symbols that can be used for transmission of the data channel in a time slot is smaller than the number L2 of symbols of the data channel, the processor is further configured to:

deferring the data channel to a next slot transmission;

or,

canceling transmission of the data channel;

or,

and adjusting the number of the symbols of the data channel according to the number of the continuous symbols which can be used for the transmission of the data channel, and transmitting the data channel according to the adjusted number of the symbols.

The embodiment of the invention also provides a transmission device of a data channel, which is applied to a terminal and comprises the following steps:

a first determining module, configured to determine, according to an instruction of a network side device, a transmission mechanism used by a data channel, where the transmission mechanism is a short-slot repeat transmission mechanism or a multi-segment transmission mechanism;

a transmission module, configured to send or receive multiple data channels by using a determined transmission mechanism; the multiple data channels for transmission or reception are used for transmitting the same transmission block, and the same data channel is not transmitted or received across time slots.

An embodiment of the present invention further provides a network side device, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor is used for reading the program in the memory and executing the following processes: determining a transmission mechanism adopted by a data channel of a terminal, wherein the transmission mechanism is a short time slot repeated transmission mechanism or a multi-segment transmission mechanism;

the transceiver is configured to indicate a transmission mechanism employed by the data channel to a terminal.

Wherein the transceiver is further configured to:

or,

Wherein the transceiver is further configured to:

and sending the first indication information to the terminal through Radio Resource Control (RRC) signaling or Downlink Control Information (DCI).

Wherein the parameter information of the data channel includes at least one of:

a number of repetitions of the data channel;

a transport block size, TBS, table employed by the data channel;

the number of symbols of the data channel;

scheduling a search space in which the DCI of the data channel is located;

scheduling a format of the DCI for the data channel;

scheduling a payload size of the DCI of the data channel.

Wherein the transceiver is further configured to:

transmitting first configuration information of a multi-segment transmission mechanism, the first configuration information comprising: a starting symbol of a data channel and a number L1 of symbols of said data channel.

Wherein the first configuration information is used to indicate a transmission time period of the data channel, and a set of consecutive symbol sets that can be used for transmission of the data channel in each slot in the transmission time period is used for transmission of one data channel.

Wherein the transmission time period of the data channel includes any one of:

l1 symbols starting from a start symbol of the data channel;

Wherein the transceiver is further configured to:

The embodiment of the present invention further provides an indicating apparatus for a transmission mechanism, which is applied to a network side device, and includes:

a second determining module, configured to determine a transmission mechanism adopted by a data channel of a terminal, where the transmission mechanism is a short-slot repeat transmission mechanism or a multi-segment transmission mechanism;

and the indicating module is used for indicating the transmission mechanism adopted by the data channel to the terminal.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the steps of the transmission method for a data channel as described above; alternatively, the computer program realizes the steps of the indication method of the transmission mechanism as described above when executed by a processor.

The technical scheme of the invention at least has the following beneficial effects:

in the transmission method, the indication method, the terminal and the network side device of the data channel of the embodiment of the invention, the network side device indicates the data of the terminal to adopt different transmission mechanisms according to different requirements, so that the terminal can be switched between the two transmission mechanisms, thereby adapting to different application scenes and fully utilizing the advantages of the two transmission mechanisms.

Drawings

Fig. 1 shows a schematic diagram of a short slot repeat transmission scheme and a multi-segment transmission scheme;

fig. 2 is a flowchart illustrating steps of a method for transmitting a data channel according to an embodiment of the present invention;

fig. 3 shows one of the schematic diagrams of the multi-segment transmission mechanism provided by the embodiment of the present invention:

fig. 4 is a second schematic diagram of a multi-segment transmission scheme according to an embodiment of the present invention;

fig. 5 is a third schematic diagram of a multi-segment transmission scheme according to an embodiment of the present invention;

fig. 6 shows one of the schematic diagrams of the short slot repeat transmission mechanism provided by the embodiment of the present invention;

FIG. 7 is a schematic diagram of a second embodiment of a short-slot repeat transmission scheme;

fig. 8 is a flowchart illustrating steps of a method for indicating a transmission mechanism according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a terminal and a network device according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a transmission apparatus for data channels according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of an indication apparatus of a transmission mechanism according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 2, an embodiment of the present invention provides a data channel transmission method, applied to a terminal, including:

step 21, determining a transmission mechanism adopted by a data channel according to an indication of network side equipment, wherein the transmission mechanism is a short time slot repeat transmission mechanism or a multi-segment transmission mechanism;

step 22, sending or receiving a plurality of data channels by adopting a determined transmission mechanism; the multiple data channels for transmission or reception are used for transmitting the same transmission block, and the same data channel is not transmitted or received across time slots.

In the embodiment of the present invention, for a short slot repeat transmission mechanism (also referred to as a mini-slot repeat transmission mechanism), an existing Transport Block Size (TBS) determination mechanism in NR may be used, and in addition, if a receiving end decodes the data packet correctly in advance, the subsequent transmission of the transmitting end may be terminated, but a DMRS (Demodulation Reference signal) is required in each mini-slot for data Demodulation, which may result in higher DMRS overhead.

For a multi-segment transmission mechanism, the overhead of DMRSs may be reduced as much as possible and all symbols that can be used for data transmission may be occupied as much as possible, but the number of symbols of the PUSCH of different segments may be different greatly, and the current determination mechanism of the TBS of NR is not applicable, and depending on the specific determination mechanism of the TBS, there may be a large difference in the code rates of different segments.

In consideration of the advantages and disadvantages of the short-slot repeat transmission mechanism and the multi-segment transmission mechanism, the terminal in the embodiment of the invention determines the transmission mechanism adopted by the data channel according to the indication of the network side equipment, and equivalently, the network side equipment can indicate the terminal to switch between the two transmission mechanisms according to different requirements, so that the method and the device are suitable for different application scenes. The terminal adopts the transmission mechanism indicated by the network side equipment to send or receive a plurality of data channels.

As an alternative embodiment, step 21 comprises:

determining a transmission mechanism adopted by a data channel according to first indication information which is sent by network side equipment and used for explicitly indicating the transmission mechanism adopted by the data channel.

Correspondingly, the method further comprises the following steps: and receiving the first indication information sent by the network side equipment through Radio Resource Control (RRC) signaling or Downlink Control Information (DCI). For example, the first indication information "0" identifies the multi-segment transmission scheme, and the first indication information "1" identifies the short slot repeat transmission scheme.

As another alternative, step 21 comprises:

Optionally, the parameter information of the data channel includes at least one of:

a number of repetitions of the data channel; and the network side equipment informs the terminal of the repetition times of the data channel through RRC signaling or DCI. For example, if the repetition number of the data channel is greater than 1, determining that the transmission mechanism adopted by the data channel is a short time slot repetition transmission mechanism; otherwise, determining the transmission mechanism adopted by the data channel as a multi-segment transmission mechanism.

A transport block size, TBS, table employed by the data channel; the network side device informs the terminal of the TBS table adopted by the data channel through RRC signaling semi-static configuration or through RNTI of scrambled DCI, and the TBS table and the transmission mechanism have a corresponding relationship (or called mapping relationship), which may be predetermined.

The number of symbols of the data channel; for example, if the number of symbols of the data channel is greater than a preset value (for example, 14), determining that the transmission mechanism adopted by the data channel is a multi-segment transmission mechanism; otherwise, determining that the transmission mechanism adopted by the data channel is a short time slot repetitive transmission mechanism.

The sum of the identifier of the starting symbol of the data channel and the number of symbols of the data channel; for example, if the sum of the identifier of the starting symbol of the data channel and the number of the symbols is greater than a preset value (for example, 14), determining that the transmission mechanism adopted by the data channel is a multi-segment transmission mechanism; otherwise, determining the transmission mechanism adopted by the data channel as a short time slot repeated transmission mechanism.

Scrambling a Radio Network Temporary Identifier (RNTI) used for scheduling DCI of the data channel; there is a corresponding relationship (or called mapping relationship) between the RNTI and the transmission mechanism, and the corresponding relationship can be predetermined.

Scheduling a search space in which the DCI of the data channel is located; there is a correspondence (or mapping) between the search space and the transmission mechanism, which can be predetermined.

Scheduling a format of the DCI for the data channel; the format of the DCI and the transmission mechanism have a corresponding relationship (or mapping relationship), which may be predetermined.

Scheduling the DCI load size of the data channel; there is a corresponding relationship (or called mapping relationship) between the DCI payload size and the transmission mechanism, and the corresponding relationship may be predetermined.

As an alternative embodiment, the method further comprises:

As another alternative embodiment, the method further comprises:

And the network side equipment transmits the first configuration information and/or the second configuration information through RRC signaling or DCI.

It should be noted that, the network side device may send both the first configuration information and the second configuration information to the terminal, and after the terminal determines the transmission mechanism indicated by the network side device, the terminal directly sends or receives the data channel according to the configuration information corresponding to the transmission mechanism. Or, when the network side device indicates the adopted transmission mechanism to the terminal, the network side device also indicates the configuration information corresponding to the indicated transmission mechanism to the terminal, and the terminal transmits or receives the data channel according to the indication of the network side device.

For a multi-segment transport mechanism:

in the above embodiment of the present invention, the method further includes:

Wherein the transmission time period of the data channel includes any one of:

l1 symbols starting from a start symbol of the data channel;

Preferably, if at least two groups of discontinuous symbol sets which can be used for the data channel transmission exist in one time slot in the transmission time period, all or part of the symbol sets in the at least two groups of discontinuous symbol sets are used for the data channel transmission; wherein the symbol set comprises a plurality of symbols in succession. For example, a symbol set 1 and a symbol set 2 exist in one time slot in the transmission time period, the symbol set 1 and the symbol set 2 are discontinuous, the symbol set 1 comprises a plurality of continuous symbols, and the symbol set 2 comprises a plurality of continuous symbols; then only symbol set 1 may be used for transmission of the data channel, or only symbol set 2 may be used for transmission of the data channel, or both symbol set 1 and symbol set 2 may be used for transmission of the data channel.

For short slot repeat transmission schemes:

if the number of a set of consecutive symbols available for transmission on the data channel in a time slot is less than the number L2 of symbols on the data channel, the method further comprises:

deferring the data channel to a next slot transmission;

or,

canceling transmission of the data channel;

or,

The multi-segment transmission mechanism is characterized as follows:

if a multi-segment transmission mechanism is adopted, a group of continuous symbol sets which can be used for data channel transmission in each time slot in the transmission time period of the data channel notified by the network side are time domain resources occupied by one data channel.

And the transmission time period of the data channel is determined according to the initial symbol and the number L1 of the symbols of the data channel notified by the network side. Specifically, the start-stop time period is L1 symbols from a start symbol notified by the network side, or L1 symbols from the start symbol notified by the network side that can be used for transmission of the data channel transmission direction, or L1 symbols actually used for transmission of the data channel from the start symbol notified by the network side.

Further, optionally, if there are multiple groups of discontinuous symbol sets that can be used for the data channel transmission in one slot, each group of symbol sets is used for the transmission of one data channel, or only a part of the groups are used for the transmission of the data channel.

Specifically, the network side notifies the starting symbol S and the number L1 of symbols of the PUSCH through RRC signaling or DCI by taking the uplink data channel PUSCH as an example.

Assuming that all symbols in one slot can be used for uplink transmission, the PUSCH start symbol S =2 and the number of symbols L1=16, which are notified by the network side, the transmission period of the PUSCH is 16 consecutive symbols from the start of the slot # n symbol 2 to the end of the slot # n +1 symbol 3. In this time period, each set of consecutive symbols in slot # n and slot # n +1 is a time domain resource occupied by one PUSCH, as shown in fig. 3, PUSCH #1 is located in slot # n, and occupies 12 symbols from symbol 2 to symbol 13; PUSCH #2 is located in slot # n +1, occupying a total of 4 symbols from symbol 0 to symbol 3.

It is assumed that some symbols are considered to be downlink symbols for TDD and cannot be used for uplink transmission. Still assuming that the PUSCH start symbol S =2 and the number of symbols L1=16 notified by the network side, and assuming that the first 2 symbols of each slot cannot be used for uplink transmission, the start-stop time period of the PUSCH is the consecutive 16 symbols from the slot # n symbol 2 or the consecutive 16 symbols from the slot # n symbol 2 that can be used for uplink transmission/PUSCH transmission, and the corresponding PUSCH time domain resource positions are respectively as shown in fig. 4.

It is further assumed that there may be two consecutive uplink symbols in a slot in consideration of some TDD configurations, and that there are several combinations calculated in terms of absolute symbols, available symbols or actual symbol numbers in connection with the PUSCH start-stop period, as shown in fig. 5, assuming that as shown in fig. 5, the symbols that cannot be used for PUSCH are shaded, depending on whether the terminal allows multiple PUSCHs to be transmitted in a slot.

The short slot repeat transmission mechanism is characterized as follows:

if the terminal determines to adopt the short time slot repeated transmission mechanism, the K data channels respectively occupy a group of continuous symbols determined according to the number L2 of the data channel symbols notified by the network side. The K is notified by the network side through RRC or DCI.

Still taking the uplink data channel PUSCH as an example for specific description, the network side notifies the starting symbol S, the number of symbols L2, and the repetition number K of the PUSCH through RRC signaling or DCI.

Assuming that all symbols in one slot can be used for PUSCH transmission, the PUSCH starting symbol S =2, the number of symbols L2=4 and the data channel repetition number K =4 notified by the network side, the first PUSCH occupies 4 consecutive symbols beginning with the slot # n symbol 2, the second PUSCH occupies 4 consecutive symbols beginning with the slot # n symbol 6, the third PUSCH occupies 4 consecutive symbols beginning with the slot # n symbol 10, and the fourth PUSCH occupies 4 consecutive symbols beginning with the slot # n +1 symbol 0, as shown in fig. 6.

The number of consecutive uplink symbols that can be used for PUSCH transmission in one slot is not always an integer multiple of the number of PUSCH symbols notified by the network side, for example, when PUSCH start symbol S =0, symbol number L2=4, and data channel repetition number K =4 notified by the network side, PUSCH #1 to PUSCH #3 occupy 4 consecutive symbols of symbol 0 to symbol 11, respectively, and the remaining two symbols are insufficient for transmission of a 4-symbol PUSCH. At this time, there may be different terminal behaviors, such as deferring transmission of PUSCH #4, cancelling transmission of PUSCH #4, or reducing the number of symbols of PUSCH #4 to 2, as shown in fig. 7, respectively.

In summary, in the embodiments of the present invention, the network side device indicates the data of the terminal to use different transmission mechanisms according to different requirements, so that the terminal can switch between the two transmission mechanisms, thereby adapting to different application scenarios and making full use of the advantages of the two transmission mechanisms.

As shown in fig. 8, an embodiment of the present invention further provides an indication method of a transmission mechanism, which is applied to a network side device, and includes:

step 81, determining a transmission mechanism adopted by a data channel of a terminal, wherein the transmission mechanism is a short time slot repeat transmission mechanism or a multi-segment transmission mechanism;

step 82, indicating the transmission mechanism adopted by the data channel to the terminal.

In the embodiment of the present invention, for a short slot retransmission mechanism (also referred to as a mini-slot retransmission mechanism), an existing NR medium TBS (Transport Block Size) determination mechanism may be used, and in addition, if a receiving end decodes the data packet correctly in advance, the subsequent transmission of the transmitting end may be terminated, but a DMRS (Demodulation Reference signal) is required in each mini-slot for data Demodulation, which may result in higher DMRS overhead.

In consideration of the advantages and disadvantages of the short-slot repetitive transmission mechanism and the multi-segment transmission mechanism, the terminal in the embodiment of the invention determines the transmission mechanism adopted by the data channel according to the indication of the network side equipment, which is equivalent to the fact that the network side equipment can indicate the terminal to switch between the two transmission mechanisms according to different requirements, so that the method and the device can be suitable for different application scenarios. The terminal adopts the transmission mechanism indicated by the network side equipment to send or receive a plurality of data channels.

As an alternative embodiment, step 82 includes:

sending first indication information for explicitly indicating a transmission mechanism adopted by a data channel to a terminal; specifically, the first indication information is sent to the terminal through radio resource control RRC signaling or downlink control information DCI. For example, the first indication information "0" identifies the multi-segment transmission scheme, and the first indication information "1" identifies the short slot repeat transmission scheme.

As another alternative, step 82 includes:

A transport block size, TBS, table employed by the data channel; the network side equipment informs the terminal of a TBS table adopted by the data channel through RRC signaling semi-static configuration or through an RNTI (radio network temporary identifier) of scrambled DCI (downlink control information), and the TBS table and a transmission mechanism have a corresponding relationship (or called a mapping relationship), and the corresponding relationship can be predetermined.

The number of symbols of the data channel; for example, if the number of symbols of the data channel is greater than a preset value (for example, 14), determining that the transmission mechanism adopted by the data channel is a multi-segment transmission mechanism; otherwise, determining the transmission mechanism adopted by the data channel as a short time slot repeated transmission mechanism.

The sum of the identifier of the starting symbol of the data channel and the number of symbols of the data channel; for example, if the sum of the identifier of the starting symbol of the data channel and the number of the symbols is greater than a preset value (for example, 14), determining that the transmission mechanism adopted by the data channel is a multi-segment transmission mechanism; otherwise, determining that the transmission mechanism adopted by the data channel is a short time slot repetitive transmission mechanism.

Radio network temporary identity RNTI used for scrambling and scheduling DCI of the data channel; there is a corresponding relationship (or called mapping relationship) between the RNTI and the transmission mechanism, and the corresponding relationship can be predetermined.

Scheduling a search space where DCI of the data channel is located; there is a correspondence (or mapping) between the search space and the transmission mechanism, which can be predetermined.

As an alternative embodiment, the method further comprises:

As another alternative embodiment, the method further comprises:

And the network side equipment sends the first configuration information and/or the second configuration information through RRC signaling or DCI.

For a multi-segment transmission scheme: the first configuration information is used to indicate a transmission time period of the data channel, wherein a group of consecutive symbol sets that can be used for transmission of the data channel in each slot in the transmission time period is used for transmission of one data channel.

Wherein the transmission time period of the data channel includes any one of:

l1 symbols starting from a start symbol of the data channel;

l1 symbols actually used for the data channel transmission starting from a starting symbol of the data channel.

Preferably, if at least two groups of discontinuous symbol sets which can be used for transmitting the data channel exist in a time slot in the transmission time period, all symbol sets or part of symbol sets in the at least two groups of discontinuous symbol sets are used for transmitting the data channel; wherein the symbol set comprises a plurality of symbols in succession. For example, a symbol set 1 and a symbol set 2 exist in one time slot in the transmission time period, the symbol set 1 and the symbol set 2 are discontinuous, the symbol set 1 comprises a plurality of continuous symbols, and the symbol set 2 comprises a plurality of continuous symbols; then only symbol set 1 may be used for transmission of the data channel, or only symbol set 2 may be used for transmission of the data channel, or both symbol set 1 and symbol set 2 may be used for transmission of the data channel.

In summary, in the above embodiments of the present invention, the network side device indicates that the data of the terminal adopts different transmission mechanisms according to different requirements, so that the terminal can switch between the two transmission mechanisms, thereby adapting to different application scenarios and making full use of the advantages of the two transmission mechanisms.

Examples of the terminal determining to adopt the short-slot repeat transmission mechanism or the multi-segment transmission mechanism according to the indication of the network side device are as follows:

example one

The network side explicitly informs the UE to adopt a short time slot repeat transmission mechanism or a multi-segment transmission mechanism through RRC signaling. Or the network side explicitly informs the UE to adopt a short-time slot repeat transmission mechanism or a multi-segment transmission mechanism through the DCI.

Example two

The network side configures the repetition times of the data channel through RRC signaling, and if the repetition times of the data channel configured by the network side is greater than 1, the terminal determines to adopt a short time slot repeat transmission mechanism; otherwise, the UE determines to adopt a multi-segment transmission mechanism. Or the network side informs the repetition times of the data channel through the DCI, and if the repetition times of the data channel configured by the network side is greater than 1, the terminal determines to adopt a short-time-slot repeat transmission mechanism; otherwise, the UE determines to adopt a multi-segment transmission mechanism.

Example three

The network side and the terminal agree in advance on the corresponding relationship between different TBS tables and transmission mechanisms. The network side configures a TBS table used by a data channel through RRC signaling, or the network side informs the TBS table through RNTI of scrambled DCI, and the UE determines to adopt a short-time-slot repeat transmission mechanism or a multi-segment transmission mechanism according to the TBS table indicated by the network side.

Example four

For an uplink configured grant (configured scheduling) mechanism and downlink semi-persistent scheduling, a network side semi-statically configures a starting symbol S and a symbol number L of data channel time domain resource allocation, and a terminal determines whether the symbol number L is greater than 14. If L is greater than 14, the terminal determines to adopt a multi-segment transmission mechanism; otherwise, the UE determines to adopt a short time slot repeat transmission mechanism.

For the uplink and downlink dynamic scheduling, a network side pre-configures a combination set of a starting symbol S and a symbol number L of time domain resource allocation, and further informs the starting symbol and the symbol number in the pre-configured set through DCI dynamic. And the terminal judges whether to adopt the first transmission mechanism or the second transmission mechanism according to whether the number of the data channel symbols notified by the DCI is larger than 14. If L is greater than 14, the terminal determines to adopt a multi-segment transmission mechanism; otherwise, the UE determines to adopt a short time slot repeat transmission mechanism.

Optionally, if all combinations in a combination set of a starting symbol S and a symbol number L of a time domain resource allocation preconfigured for the terminal by the network side satisfy L >14, the terminal may determine to adopt a multi-segment transmission mechanism without an indication of DCI; similarly, if all combinations in the combination set of the starting symbol S and the symbol number L of the time domain resource allocation preconfigured for the terminal by the network side satisfy that L is less than or equal to 14, the terminal may determine to adopt the short-slot repeat transmission mechanism without the indication of DCI.

Further, optionally, if the terminal determines to use the multi-segment transmission mechanism and the network side pre-configures the terminal with a data channel repetition number greater than 1, the terminal ignores the data channel repetition number configured by the network side.

Example five

For an uplink configured grant (configured scheduling) mechanism and downlink semi-persistent scheduling, a network side semi-statically configures a starting symbol S and a symbol number L of data channel time domain resource allocation, and a terminal determines whether the sum of the starting symbol S and the symbol number L is greater than 14. If S + L >14, the UE determines to adopt a multi-segment transmission mechanism; otherwise, the UE determines to adopt a short time slot repeat transmission mechanism.

For uplink and downlink dynamic scheduling, a network side pre-configures a combination set of a starting symbol S and a symbol number L allocated to a time domain resource, and further informs the starting symbol and the symbol number in the pre-configured set through DCI dynamic. And the terminal judges whether the sum of the initial symbol and the symbol number of the data channel notified by the DCI is greater than 14 to adopt a short-slot repeated transmission mechanism or a multi-segment transmission mechanism. If S + L >14, the terminal determines to adopt a multi-segment transmission mechanism; otherwise, the terminal determines to adopt a short time slot repeat transmission mechanism. Optionally, if all combinations in a combination set of a starting symbol S and a symbol number L of time domain resource allocation preconfigured for the terminal by the network side satisfy S + L >14, the terminal may determine to adopt a multi-segment transmission mechanism without an indication of DCI; similarly, if all combinations in the combination set of the starting symbol S and the symbol number L allocated by the time domain resource preconfigured for the terminal by the network side satisfy that S + L is less than or equal to 14, the terminal may determine to adopt a short-slot repeat transmission mechanism without the indication of DCI.

Further, optionally, if the terminal determines to adopt a multi-segment transmission mechanism and the network side preconfigures the terminal with the data channel repetition number greater than 1, the terminal ignores the data channel repetition number configured by the network side.

Example six

The network side and the terminal predetermine the corresponding relation between the RNTI of the DCI of the scrambling scheduling data channel, the search space where the DCI of the scheduling data channel is located, the DCI format of the scheduling data channel or the DCI load size of the scheduling data channel and the transmission mechanism. The terminal determines a corresponding transmission scheme based on the DCI scheduling the data channel. Specifically, for example, the network side configures two different RNTIs for the terminal, and the two different RNTIs respectively correspond to the short slot repeat transmission mechanism and the multi-segment transmission mechanism; or, the network side and the UE appoint a transmission mechanism corresponding to each search space in advance, and the terminal determines the transmission mechanism based on the search space where the DCI of the scheduling data is located; or the network side and the terminal predetermine transmission mechanisms corresponding to different DCI formats, and the terminal determines the transmission mechanisms based on the DCI formats of the scheduling data; or the network side and the terminal agree in advance on different transmission mechanisms corresponding to the DCI load sizes, and the terminal determines the transmission mechanisms based on the DCI load sizes of the scheduling data. Since this scheme relies on DCI, it is only applicable to dynamic scheduling.

It should be noted that, for all the above examples, if the network side explicitly or implicitly notifies the terminal transmission mechanism through an RRC message, it is preferable that, when the network side notifies the terminal to use the multi-segment transmission mechanism, the network side allows L >14 or S + L >14 to be taken from a set of starting symbols S and symbol numbers L of a data channel configured/notified for the terminal; when a network side configures a terminal to adopt a short-slot repeat transmission mechanism, the network side does not allow values of L >14 or S + L >14 in a set of a data channel starting symbol S and a symbol number L configured for the terminal, or the network side does not allow the values of L >14 or S + L >14 to be notified. If the network side explicitly or implicitly notifies the terminal transmission mechanism through the DCI, it is preferable that, when the network side notifies the terminal to use the multi-segment transmission mechanism, the network side allows L >14 or S + L >14 values in the starting symbol S and the symbol number L of the data channel notified by the terminal; when the network side informs the UE to adopt a short time slot repeat transmission mechanism, the network side does not allow the notification of the value of L >14 or S + L > 14. Further, if the terminal is configured with the data channel repetition number greater than 1, the terminal ignores the configuration.

As shown in fig. 9, an embodiment of the present invention further provides a terminal, including: a transceiver 920, a memory 910, a processor 900 and a program stored on the memory 910 and executable on the processor 900; the processor 900 is used to read the program in the memory and execute the following processes: determining a transmission mechanism adopted by a data channel according to the indication of network side equipment, wherein the transmission mechanism is a short time slot repeated transmission mechanism or a multi-segment transmission mechanism;

the transceiver 920 is configured to transmit or receive a plurality of data channels by using the determined transmission mechanism; the multiple data channels for transmission or reception are used for transmitting the same transmission block, and the same data channel is not transmitted or received across time slots.

Optionally, in the foregoing embodiment of the present invention, the processor 900 is further configured to:

or,

Optionally, in the foregoing embodiment of the present invention, the transceiver 920 is further configured to:

Optionally, in the foregoing embodiment of the present invention, the parameter information of the data channel includes at least one of:

a number of repetitions of the data channel;

a transport block size, TBS, table employed by the data channel;

the number of symbols of the data channel;

scheduling a search space in which the DCI of the data channel is located;

scheduling a format of the DCI for the data channel;

scheduling a payload size of the DCI of the data channel.

Optionally, in the above embodiment of the present invention, the transmission time period of the data channel includes any one of:

l1 symbols starting from a start symbol of the data channel;

Optionally, in the above embodiment of the present invention, if at least two groups of discontinuous symbol sets that can be used for data channel transmission exist in one timeslot in the transmission time period, all symbol sets or a part of symbol sets in the at least two groups of discontinuous symbol sets are used for data channel transmission; wherein the symbol set comprises a plurality of symbols in succession.

Optionally, in the foregoing embodiment of the present invention, if the number of a group of consecutive symbols that can be used for transmission of the data channel in a time slot is less than the number L2 of symbols of the data channel, the processor is further configured to:

deferring the data channel to a next slot transmission;

or,

canceling transmission of the data channel;

or,

It should be noted that, the terminal provided in the embodiments of the present invention is a terminal capable of executing the transmission method of the data channel, and all embodiments of the transmission method of the data channel are applicable to the terminal, and can achieve the same or similar beneficial effects.

As shown in fig. 10, an embodiment of the present invention further provides a transmission apparatus for a data channel, which is applied to a terminal, and includes:

a first determining module 101, configured to determine, according to an instruction of a network-side device, a transmission mechanism adopted by a data channel, where the transmission mechanism is a short-slot repeat transmission mechanism or a multi-segment transmission mechanism;

a transmission module 102, configured to send or receive a plurality of data channels by using a determined transmission mechanism; the multiple data channels for transmission or reception are used for transmitting the same transmission block, and the same data channel is not transmitted or received across time slots.

Optionally, in the above embodiment of the present invention, the first determining module includes:

the first determining submodule is used for determining a transmission mechanism adopted by a data channel according to first indication information which is sent by network side equipment and used for explicitly indicating the transmission mechanism adopted by the data channel;

and/or the presence of a gas in the gas,

and the second determining submodule is used for determining a transmission mechanism adopted by the data channel according to the parameter information of the data channel indicated by the network side equipment.

Optionally, in the above embodiment of the present invention, the apparatus further includes:

a first receiving module, configured to receive the first indication information sent by the network side device through a radio resource control RRC signaling or downlink control information DCI.

a number of repetitions of the data channel;

a transport block size, TBS, table employed by the data channel;

the number of symbols of the data channel;

scheduling a search space where DCI of the data channel is located;

scheduling a format of the DCI for the data channel;

scheduling a payload size of the DCI of the data channel.

a second receiving module, configured to receive first configuration information of a multi-segment transmission mechanism sent by a network side device, where the first configuration information includes: a starting symbol of a data channel and a number L1 of symbols of said data channel.

a third determining module, configured to determine a transmission time period of the data channel according to the first configuration information; wherein a set of consecutive symbol sets available for transmission of the data channel in each slot during the determined transmission time period is used for transmission of one data channel.

Optionally, in the foregoing embodiment of the present invention, the transmission time period of the data channel includes any one of:

l1 symbols starting from a start symbol of the data channel;

a third receiving module, configured to receive second configuration information of a short timeslot repeat transmission mechanism sent by a network side device, where the second configuration information includes: the starting symbol of the data channel, the number of symbols L2 of the data channel transmitted in each short slot, and the number of repetitions of the data channel transmitted in the short slot.

Optionally, in the above embodiment of the present invention, if the number of a group of consecutive symbols that can be used for transmission of the data channel in a time slot is less than the number L2 of symbols of the data channel, the apparatus further includes:

a processing module for deferring the data channel to a next slot transmission; or, for canceling the transmission of the data channel; or, the apparatus is configured to adjust the number of symbols of the data channel according to the number of consecutive symbols that can be used for the data channel transmission, and perform data channel transmission according to the adjusted number of symbols.

It should be noted that the transmission apparatus for a data channel provided in the embodiments of the present invention is an apparatus capable of executing the transmission method for a data channel, and all embodiments of the transmission method for a data channel are applicable to the apparatus and can achieve the same or similar beneficial effects.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the above-described transmission method for a data channel, and can achieve the same technical effect, and is not described herein again to avoid repetition. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk

As shown in fig. 9, an embodiment of the present invention further provides a network side device, including: a transceiver 920, a memory 910, a processor 900 and a program stored on the memory 910 and executable on the processor 900, the processor 900 being configured to read the program in the memory and execute the following processes: determining a transmission mechanism adopted by a data channel of a terminal, wherein the transmission mechanism is a short time slot repeated transmission mechanism or a multi-segment transmission mechanism;

the transceiver 920 is configured to indicate a transmission mechanism adopted by the data channel to a terminal.

or,

a number of repetitions of the data channel;

a transport block size, TBS, table employed by the data channel;

the number of symbols of the data channel;

scheduling a search space in which the DCI of the data channel is located;

scheduling a format of the DCI for the data channel;

and scheduling the load size of the DCI of the data channel.

Optionally, in the above embodiment of the present invention, the first configuration information is used to indicate a transmission time period of the data channel, where a set of consecutive symbols that can be used for transmission of the data channel in each slot in the transmission time period is used for transmission of one data channel.

l1 symbols starting from a start symbol of the data channel;

Optionally, in the above embodiment of the present invention, if at least two groups of discontinuous symbol sets that can be used for transmitting the data channel exist in one timeslot in the transmission time period, all symbol sets or a part of symbol sets in the at least two groups of discontinuous symbol sets are used for transmitting the data channel; wherein the symbol set comprises a plurality of symbols in succession.

It should be noted that the network side device provided in the embodiments of the present invention is a network side device capable of executing the indication method of the transmission mechanism, and all embodiments of the indication method of the transmission mechanism are applicable to the network side device, and can achieve the same or similar beneficial effects.

As shown in fig. 11, an embodiment of the present invention further provides an apparatus for indicating a transmission mechanism, which is applied to a network device, and includes:

a second determining module 111, configured to determine a transmission mechanism adopted by a data channel of a terminal, where the transmission mechanism is a short-slot repeat transmission mechanism or a multi-segment transmission mechanism;

an indicating module 112, configured to indicate a transmission mechanism adopted by the data channel to the terminal.

Optionally, in the above embodiment of the present invention, the indication module includes:

the first indication submodule is used for sending first indication information used for explicitly indicating a transmission mechanism adopted by a data channel to the terminal;

and/or the presence of a gas in the gas,

and the second indicating submodule is used for implicitly indicating the transmission mechanism adopted by the data channel to the terminal through the parameter information of the data channel.

Optionally, in the above embodiment of the present invention, the first indication sub-module includes:

and the indicating unit is used for sending the first indicating information to the terminal through Radio Resource Control (RRC) signaling or Downlink Control Information (DCI).

Optionally, in the above embodiment of the present invention, the parameter information of the data channel includes at least one of:

a number of repetitions of the data channel;

a transport block size, TBS, table employed by the data channel;

the number of symbols of the data channel;

scheduling a search space in which the DCI of the data channel is located;

scheduling a format of the DCI for the data channel;

scheduling a payload size of the DCI of the data channel.

a first sending module, configured to send first configuration information of a multi-segment transmission mechanism, where the first configuration information includes: a starting symbol of a data channel and a number L1 of symbols of said data channel.

l1 symbols starting from a start symbol of the data channel;

a second sending module, configured to send second configuration information of the short timeslot repeat transmission mechanism, where the second configuration information includes: the starting symbol of the data channel, the number of symbols L2 of the data channel transmitted per short slot, and the number of repetitions of the data channel transmitted in the short slot.

It should be noted that, the indicating apparatus for a transmission mechanism provided in the embodiments of the present invention is an indicating apparatus for a transmission mechanism capable of executing the indicating method for a transmission mechanism, and all embodiments of the indicating method for a transmission mechanism are applicable to the indicating apparatus for a transmission mechanism and can achieve the same or similar beneficial effects.

The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the above-mentioned indication method for a transmission mechanism, and can achieve the same technical effect, and is not described herein again to avoid repetition. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element.

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

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

While the foregoing is directed to the preferred embodiment of the present invention, it will be appreciated by those skilled in the art that various changes and modifications may be made therein without departing from the principles of the invention as set forth in the appended claims.

Claims

1. A transmission method of a data channel is applied to a terminal, and is characterized by comprising the following steps:

adopting a determined transmission mechanism to send or receive data in a plurality of data channels; the data channels used for sending or receiving are used for transmitting the same transmission block, and the same data channel is not sent or received across time slots;

wherein the method further comprises:

receiving first configuration information of a multi-segment transmission mechanism sent by a network side device, wherein the first configuration information comprises: the number of initial symbols of a data channel and the number of symbols of the data channel L1;

2. The method according to claim 1, wherein the determining, according to the indication from the network side device, the transmission mechanism adopted by the data channel comprises:

or,

3. The method of claim 2, further comprising:

4. The method of claim 2, wherein the parameter information of the data channel comprises at least one of:

a number of repetitions of the data channel;

a transport block size, TBS, table employed by the data channel;

the number of symbols of the data channel;

scheduling a search space in which the DCI of the data channel is located;

scheduling a format of the DCI for the data channel;

scheduling a payload size of the DCI of the data channel.

5. The method of claim 1, wherein the transmission time period of the data channel comprises any one of:

l1 symbols starting from a start symbol of the data channel;

6. The method of claim 1, wherein if there are at least two sets of mutually discontinuous symbol sets available for the data channel transmission in a time slot of the transmission time period, all or a part of the at least two sets of mutually discontinuous symbol sets are used for the data channel transmission; wherein the symbol set comprises a plurality of symbols in succession.

7. The method of claim 1, further comprising:

8. The method of claim 7, wherein if the number of consecutive symbols in a time slot that can be used for the data channel transmission is less than the number of symbols L2 of the data channel, the method further comprises:

deferring the data channel to a next slot transmission;

or,

canceling transmission of the data channel;

or,

9. A method for indicating a transmission mechanism is applied to a network side device, and is characterized by comprising the following steps:

indicating a transmission mechanism adopted by the data channel to a terminal;

wherein the method further comprises:

sending first configuration information of a multi-segment transmission mechanism, wherein the first configuration information comprises: the number of initial symbols of a data channel and the number of symbols of the data channel L1;

the first configuration information is used to indicate a transmission time period of the data channel, wherein a set of consecutive symbol sets that can be used for transmission of the data channel in each slot in the transmission time period is used for transmission of one data channel.

10. The method of claim 9, wherein indicating the transmission scheme used by the data channel to the terminal comprises:

or,

11. The method of claim 10, wherein sending first indication information for explicitly indicating a transmission scheme adopted by the data channel to the terminal comprises:

12. The method of claim 10, wherein the parameter information of the data channel comprises at least one of:

a number of repetitions of the data channel;

a transport block size, TBS, table employed by the data channel;

the number of symbols of the data channel;

scheduling a search space where DCI of the data channel is located;

scheduling a format of the DCI for the data channel;

and scheduling the load size of the DCI of the data channel.

13. The method of claim 9, wherein the transmission time period of the data channel comprises any one of:

l1 symbols starting from a start symbol of the data channel;

14. The method of claim 9, wherein if there are at least two sets of mutually discontinuous symbol sets available for the data channel transmission in one time slot of the transmission time period, all or a part of the at least two sets of mutually discontinuous symbol sets are used for the data channel transmission; wherein the symbol set comprises a plurality of symbols in succession.

15. The method of claim 9, further comprising:

sending second configuration information of a short-slot repeat transmission mechanism, wherein the second configuration information comprises: the starting symbol of the data channel, the number of symbols L2 of the data channel transmitted in each short slot, and the number of repetitions of the data channel transmitted in the short slot.

16. A terminal, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; it is characterized in that the preparation method is characterized in that,

the processor is used for reading the program in the memory and executing the following processes: determining a transmission mechanism adopted by a data channel according to the indication of network side equipment, wherein the transmission mechanism is a short time slot repeated transmission mechanism or a multi-segment transmission mechanism;

the transceiver is used for transmitting or receiving data in a plurality of data channels by adopting a determined transmission mechanism; the data channels used for transmitting or receiving are used for transmitting the same transmission block, and the same data channel is not transmitted or received across time slots;

the transceiver is further configured to:

the processor is further configured to:

17. The terminal of claim 16, wherein the processor is further configured to:

or,

18. The terminal of claim 17, wherein the transceiver is further configured to:

19. The terminal of claim 17, wherein the parameter information of the data channel comprises at least one of:

a number of repetitions of the data channel;

a transport block size, TBS, table employed by the data channel;

the number of symbols of the data channel;

scheduling a search space in which the DCI of the data channel is located;

scheduling a format of the DCI for the data channel;

scheduling a payload size of the DCI of the data channel.

20. The terminal of claim 16, wherein the transmission time period of the data channel comprises any one of:

l1 symbols starting from a start symbol of the data channel;

21. The terminal according to claim 16, wherein if there are at least two sets of mutually discontinuous symbol sets available for the data channel transmission in a time slot of the transmission time period, all or a part of the at least two sets of mutually discontinuous symbol sets are used for the data channel transmission; wherein the symbol set comprises a plurality of symbols in succession.

22. The terminal of claim 16, wherein the transceiver is further configured to:

23. The terminal of claim 22, wherein if a set of consecutive symbols available for transmission on the data channel in a time slot is less than the number of symbols L2 on the data channel, the processor is further configured to:

deferring the data channel to a next slot transmission;

or,

canceling transmission of the data channel;

or,

24. A transmission apparatus for a data channel, applied to a terminal, comprising:

a transmission module for transmitting or receiving data in a plurality of data channels by using a determined transmission mechanism; the data channels used for transmitting or receiving are used for transmitting the same transmission block, and the same data channel is not transmitted or received across time slots;

the device further comprises:

a second receiving module, configured to receive first configuration information of a multi-segment transmission mechanism sent by a network side device, where the first configuration information includes: the number of initial symbols of a data channel and the number of symbols of the data channel L1;

a third determining module, configured to determine a transmission time period of the data channel according to the first configuration information; wherein a set of consecutive symbols available for transmission of the data channel in each slot within the determined transmission time period is used for transmission of one data channel.

25. A network-side device, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; it is characterized in that the preparation method is characterized in that,

the processor is used for reading the program in the memory and executing the following processes: determining a transmission mechanism adopted by a data channel of a terminal, wherein the transmission mechanism is a short time slot repeated transmission mechanism or a multi-segment transmission mechanism;

the transceiver is used for indicating a transmission mechanism adopted by the data channel to a terminal;

wherein the transceiver is further configured to:

transmitting first configuration information of a multi-segment transmission mechanism, the first configuration information comprising: the number of initial symbols of a data channel and the number of symbols of the data channel L1;

26. The network-side device of claim 25, wherein the transceiver is further configured to:

or,

27. The network-side device of claim 26, wherein the transceiver is further configured to:

28. The network-side device of claim 26, wherein the parameter information of the data channel comprises at least one of:

a number of repetitions of the data channel;

a transport block size, TBS, table employed by the data channel;

the number of symbols of the data channel;

scheduling a search space in which the DCI of the data channel is located;

scheduling a format of the DCI for the data channel;

scheduling a payload size of the DCI of the data channel.

29. The network device of claim 25, wherein the transmission time period of the data channel comprises any one of:

l1 symbols starting from a start symbol of the data channel;

30. The network-side device of claim 25, wherein if at least two sets of mutually discontinuous symbol sets exist in a timeslot in the transmission time period, where the at least two sets of mutually discontinuous symbol sets can be used for transmission of the data channel, all or a part of the at least two sets of mutually discontinuous symbol sets are used for transmission of the data channel; wherein the symbol set comprises a plurality of symbols in succession.

31. The network-side device of claim 25, wherein the transceiver is further configured to:

32. An indication apparatus of a transmission mechanism, applied to a network side device, includes:

an indicating module, configured to indicate a transmission mechanism adopted by the data channel to a terminal;

wherein the apparatus further comprises:

a first sending module, configured to send first configuration information of a multi-segment transmission mechanism, where the first configuration information includes: the number of initial symbols of a data channel and the number of symbols of the data channel L1;

33. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the transmission method of the data channel according to any one of claims 1 to 8; alternatively, the computer program realizes the steps of the indication method of the transmission mechanism as claimed in any one of claims 9 to 15 when executed by a processor.