WO2022120600A1

WO2022120600A1 - Repeat transmission method and apparatus, and device and storage medium

Info

Publication number: WO2022120600A1
Application number: PCT/CN2020/134672
Authority: WO
Inventors: 崔胜江
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2022-06-16
Also published as: CN116349181A

Abstract

The present application relates to the technical field of communications. Provided are a repeat transmission method and apparatus, and a device and a storage medium. The method comprises: determining n slots for repeat transmission; for a first slot in the n slots, segmenting a first RE in the first slot on the basis of m RVs, so as to obtain k RE sets; and in the first slot, transmitting, on the basis of the k RE sets, data corresponding to the m RVs. By means of the embodiments of the present application, data corresponding to a plurality of redundant versions is transmitted in one slot, thereby increasing the actual number of repeat transmissions as much as possible under the configuration of a limited transmission repetition value, solving the problem of limited coverage, and ensuring effective repeat transmission between a terminal device and a network device. In addition, by means of the embodiments of the present application, the effectiveness of repeat transmission is improved, and the compatibility and adaptability of repeat transmission are improved.

Description

Repeated transmission method, device, device and storage medium

technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a method, apparatus, device, and storage medium for repeated transmission.

Background technique

In order to improve the reliability of data transmission, 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) introduced a data repeat transmission mechanism in the NR (New Radio, new air interface) system.

The data repetition transmission mechanism means that the sender uses the same symbol allocation scheme in multiple consecutive time slots (Slots) to transmit the same TB (Transport Block, transport block) multiple times. When the length of the TB is long, the sender needs to segment the TB, then encode each segment of the segmented TB separately, and place the encoded data in the ring buffer. After that, in each transmission process, the transmitting end performs rate matching on the TB-encoded data based on the RV (Redundant Version, redundancy version) to determine the data transmitted to the receiving end in this transmission process. In addition, in the data repetition transmission mechanism, an aggregation factor (AggregationFactor) is also defined to indicate the number of timeslots that need to perform repeated transmission. For ease of expression, in this embodiment of the present application, the aggregation factor is collectively referred to as the transmission repetition value . Based on this, if there are time slots that do not meet the data transmission requirements in multiple consecutive time slots, the repeated transmissions in these time slots that do not meet the data transmission requirements will be ignored, and the actual number of repeated transmissions does not meet the transmission requirements. Duplicate values, resulting in less than ideal coverage enhancement.

Therefore, how to perform repeated transmission so that the repeated transmission can achieve an effective coverage enhancement effect needs further discussion and research.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a method, apparatus, device, and storage medium for repeated transmission. The technical solution is as follows:

On the one hand, an embodiment of the present application provides a method for repeated transmission, and the method includes:

determining n time slots for repeated transmission, where n is a positive integer;

For the first time slot in the n time slots, based on m RVs, the first RE (Resource Elements, resource element) in the first time slot is divided to obtain k RE sets, the m is a positive integer, and the k is a positive integer; wherein, the first time slot includes at least one time slot in the n time slots;

In the first time slot, data corresponding to the m RVs are transmitted based on the k RE sets.

Optionally, the above-mentioned repeated transmission method is applied in a terminal device; or, the above-mentioned repeated transmission method is applied in a network device.

On the other hand, an embodiment of the present application provides a repeated transmission device, the device comprising:

a time slot determination module, configured to determine n time slots for repeated transmission, where n is a positive integer;

A resource division module, configured to divide the first REs in the first time slot based on m RVs for the first time slot in the n time slots to obtain k RE sets, where m is a positive integer, the k is a positive integer; wherein, the first time slot includes at least one time slot in the n time slots;

A data transmission module, configured to transmit, in the first time slot, data corresponding to the m RVs based on the k RE sets.

Optionally, the above-mentioned repeated transmission apparatus is set in a terminal device; or, the above-mentioned repeated transmission apparatus is set in a network device.

In another aspect, an embodiment of the present application provides a device, the device includes: a processor, and a transceiver connected to the processor; wherein:

the processor, configured to determine n time slots for repeated transmission, where n is a positive integer;

The processor is further configured to, for the first time slot in the n time slots, divide the first REs in the first time slot based on m RVs to obtain k RE sets, the m is a positive integer, and the k is a positive integer; wherein, the first time slot includes at least one time slot in the n time slots;

The transceiver is configured to transmit, in the first time slot, data corresponding to the m RVs based on the k RE sets.

Optionally, the above-mentioned device is a terminal device; or, the above-mentioned device is a network device.

In another aspect, an embodiment of the present application provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is configured to be executed by a processor of a device to implement the above-mentioned method for repeated transmission.

In another aspect, an embodiment of the present application provides a chip, where the chip includes a programmable logic circuit and/or program instructions, and when the chip runs on a device, it is used to implement the above-mentioned repeated transmission method.

In another aspect, an embodiment of the present application provides a computer program product, which is used to implement the above-mentioned repeated transmission method when the computer program product runs on a device.

The technical solutions provided by the embodiments of the present application may include the following beneficial effects:

The transmitting end divides REs that can be used for repeated transmission in the time slot, and transmits data corresponding to multiple redundant versions at the same time based on the divided REs, so that the data corresponding to multiple redundant versions can be transmitted in one time slot. transmission. Compared with only transmitting data corresponding to one redundancy version in one time slot, the embodiment of the present application realizes that the actual number of repeated transmissions is increased as much as possible under the configuration of a limited transmission repetition value, which effectively avoids The number of transmission time slots does not reach the transmission repetition value, and the ideal coverage enhancement effect cannot be achieved, which solves the problem of limited coverage and ensures effective repeated transmission between the terminal device and the network device. In addition, the embodiment of the present application divides the REs that can be used for repeated transmission in the time slot. The original RE design in the time slot improves the compatibility and adaptability of repeated transmission.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

1 is a schematic diagram of a system architecture provided by an embodiment of the present application;

2 is a schematic diagram of a self-contained time slot provided by an embodiment of the present application;

3 is a schematic diagram of a timing relationship provided by an embodiment of the present application;

4 is a schematic diagram of a combination of data repeated transmission and a flexible time slot structure provided by an embodiment of the present application;

5 is a flowchart of a method for repeated transmission provided by an embodiment of the present application;

6 is a schematic diagram of a time slot provided by an embodiment of the present application;

7 is a schematic diagram of resource partitioning provided by an embodiment of the present application;

8 is a schematic diagram of resource partitioning provided by another embodiment of the present application;

FIG. 9 is a schematic diagram of resource partitioning provided by another embodiment of the present application;

10 is a schematic diagram of resource partitioning provided by another embodiment of the present application;

FIG. 11 is a schematic diagram of resource partitioning provided by yet another embodiment of the present application;

12 is a block diagram of a repeated transmission device provided by an embodiment of the present application;

13 is a block diagram of a repeated transmission device provided by another embodiment of the present application;

FIG. 14 is a structural block diagram of a device provided by an embodiment of the present application.

Detailed ways

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

The network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. The evolution of new business scenarios and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

Please refer to FIG. 1 , which shows a schematic diagram of a system architecture provided by an embodiment of the present application. The system architecture may include: a terminal device 10 and a network device 20 .

The number of terminal devices 10 is usually multiple, and one or more terminal devices 10 may be distributed in a cell managed by each network device 20 . The terminal device 10 may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems with wireless communication functions, as well as various forms of user equipment (UE), mobile stations (Mobile Station, MS) and so on. For convenience of description, in the embodiments of the present application, the devices mentioned above are collectively referred to as terminal devices.

The network device 20 is a device deployed in an access network to provide a wireless communication function for the terminal device 10 . The network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems with different radio access technologies, the names of devices with network device functions may be different, such as in 5G NR systems or NR-U (New Radio-Unlicensed, Unlicensed Carrier New Radio) systems , called gNodeB or gNB. As communications technology evolves, the name "network equipment" may change. For convenience of description, in the embodiments of the present application, the above-mentioned apparatuses for providing a wireless communication function for the terminal device 10 are collectively referred to as network devices.

The "5G NR system" in the embodiments of this application may also be referred to as a 5G system or an NR system, but those skilled in the art can understand its meaning. The technical solutions described in the embodiments of this application may be applicable to the 5G NR system or the NR-U system, and may also be applicable to the subsequent evolution system of the 5G NR system or the NR-U system.

Before the technical solutions of the embodiments of the present application are introduced and explained, some terms and related technologies appearing in the embodiments of the present application are introduced and explained.

1. The data transmission mechanism is repeated.

In order to improve the reliability of data transmission, 3GPP introduced a data repetition transmission mechanism in the NR system. The data repetition transmission mechanism means that the transmitter uses the same symbol allocation scheme in multiple consecutive time slots to transmit the same TB multiple times. When the length of the TB is long, the sender needs to segment the TB, then encode each segment of the segmented TB separately, and place the encoded data in the ring buffer. After that, in each transmission process, the transmitting end performs rate matching on the TB-encoded data based on the RV to determine the data transmitted to the receiving end in this transmission process.

In addition, an aggregation factor (AggregationFactor) is also defined in the data repetition transmission mechanism to indicate the number of timeslots that need to be repeated transmission. For ease of expression, in this embodiment of the present application, the aggregation factor is collectively referred to as a transmission repetition value. For the repeated transmission of downlink data in PDSCH (Physical Downlink Shared Channel, physical downlink shared channel), that is, when the sender is a network device, the transmission repetition value is defined as the parameter pdsch-AggregationFactor (downlink transmission repetition value); Repeated transmission of uplink data in PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel), that is, when the sender is a terminal device, the transmission repetition value is defined as the parameter pusch-AggregationFactor (uplink transmission repetition value). Optionally, the transmission repetition value includes any of the following: 1, 2, 4, and 8.

In one example, when the transmission repetition value is greater than 1, that is, when the parameter pdsch-AggregationFactor>1 or the parameter pusch-AggregationFactor>1, the sender will transmit multiple consecutive time slots with the number of time slots equal to the transmission repetition value The same TB is transmitted multiple times using the same symbol allocation scheme. Optionally, in each transmission process, the RV corresponding to the data transmitted by the sender is shown in Table 1 and Table 2 below.

Table 1 RV settings when the parameter pdsch-AggregationFactor>1

Table 2 RV settings when the parameter pusch-AggregationFactor>1

2. Flexible time slot structure.

Considering the flexibility of the frame structure, the NR system implements FDD (Frequency Division Duplex) by configuring the OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) symbols in the time slot as uplink symbols or downlink symbols. Effect. In addition, the uplink and downlink configuration period of the TDD (Time Division Duplex) frequency band can also be flexibly configured. Various cycle lengths such as 5ms, 10ms, etc. In addition, the concept of self-contained time slot and flexible time slot structure is also introduced in the NR system.

As shown in FIG. 2, it shows a schematic diagram of a self-contained time slot provided by an embodiment of the present application. A self-contained time slot means that in order to reduce the time delay between data transmission and ACK/NACK (Acknowledge/Negative Acknowledge, acknowledgement/non-acknowledgement) feedback, the data part and the feedback channel are included in one time slot. For example, for downlink data reception, the terminal device can implement data reception and feedback (ie ACK/NACK) corresponding to the data reception in the same time slot. Exemplarily, when the terminal device receives downlink data, it has already The decoding of the reference signal and the downlink control information is completed, so that the downlink data can be decoded immediately; according to the decoding result of the downlink data, the terminal device can prepare the uplink control information such as ACK/NACK during the downlink and uplink switching; In the uplink, the terminal equipment sends the uplink control information. It can be seen that the self-contained time slot can enable the network device and the terminal device to complete the complete data interaction within one time slot, thereby greatly reducing the delay caused by feedback.

Flexible time slot structure, that is, each symbol in a time slot can be configured as a symbol with flexible attributes in addition to being fixedly configured as an uplink symbol and a downlink symbol. The flexible attribute symbol can be used as a guard symbol or a guard interval for The uplink and downlink conversion time can also be dynamically indicated based on the control channel of the physical layer, and it can take effect in real time as a downlink symbol or an uplink symbol, so as to achieve the effect of flexibly supporting service diversity. According to the different symbol configurations in the time slot, the NR system includes all downlink time slots, all uplink time slots, all flexible time slots, and time slot structures with different numbers of downlink symbols, uplink symbols, and flexible symbols, and different time slots. The structures correspond to a slot format index respectively.

3. Time domain resource allocation and timing.

The NR system takes into account the flexibility of scheduling, especially for URLLC (Ultra Reliable and Low Latency Communications) services that require extremely short delay, NR has designed the timing relationship as shown in Figure 3 , the timing diagram of NR PDSCH/PUSCH scheduling/retransmission is given. As shown in Figure 3, the K0 value represents the transmission time slot offset between downlink scheduling and downlink data transmission, the K1 value represents the transmission time slot offset between downlink data transmission and feedback information, and the K3 value represents the difference between the feedback information and the feedback information. The transmission time slot offset between downlink data retransmissions, and the value of K2 represents the transmission time slot offset between uplink scheduling and uplink data transmission.

In an example, when data repeated transmission in multiple time slots is combined with a flexible time slot structure, it is necessary to determine which symbols and/or time slots can implement data repeated transmission according to a certain method. If there are time slots that do not meet the data transmission requirements in a plurality of consecutive time slots, the repeated transmissions in these time slots that do not meet the data transmission requirements will be ignored.

As shown in FIG. 4 , it shows a schematic diagram of a combination of data repeated transmission and a flexible time slot structure provided by an embodiment of the present application. In this example, the parameter pusch-AggregationFactor=4, that is, the number of repeated transmissions is 4 times. However, due to the configuration of the flexible timeslot structure, among the four consecutive timeslots shown in Figure 4, timeslot 1 and timeslot 2 are configured for downlink transmission, so the actual number of repeated transmissions is only 2 times, which does not reach the parameter pusch-AggregationFactor requirements, and thus cannot achieve the desired coverage enhancement effect. For another example, in the case of DDDSU (in five consecutive time slots, D represents all downlink time slots, U represents all uplink time slots, and S represents mixed uplink and downlink and guard time slots) frame structure, configure the parameter pusch-AggregationFactor If it is 4, then in 4 consecutive time slots, only one effective uplink transmission can be actually performed, and the configured parameter pusch-AggregationFactor does not play a role, so the repeated data transmission in the related art has no effect on the system of the TDD frame structure. The coverage limit is too large, which affects the deployment efficiency of TDD.

Based on this, an embodiment of the present application provides a method for repeated transmission, which can be used to perform repeated transmission of multiple redundancy versions at the same time, so as to improve the coverage enhancement effect. Hereinafter, the technical solutions of the present application will be described with reference to several examples.

Please refer to FIG. 5 , which shows a flowchart of a repeated transmission method provided by an embodiment of the present application. The repeated transmission method can be applied to the terminal device 10 shown in FIG. 1 above, and can also be applied to the network device 20 shown in FIG. 1 above. The method includes the following steps.

Step 510, determine n time slots for repeated transmission.

The repeated transmission described in the embodiments of the present application can be either uplink repeated transmission, that is, the sender is a terminal device, or downlink repeated transmission, that is, the sender is a network device. Before the transmitting end performs repeated transmission, it needs to determine n time slots for repeated transmission, where n is a positive integer. Optionally, the n time slots used for repeated transmission are consecutive n time slots. In an example, the above step 510 includes: determining n time slots based on timing information of DCI (Downlink Control Information, downlink control information) and a transmission repetition value.

DCI refers to control information transmitted through a PDCCH (Physical Downlink Control Channel, physical downlink control channel), which can be used for both uplink scheduling and downlink scheduling, which is not limited in this embodiment of the present application. It can be known from the above description of time domain resource allocation and timing that the timing information of the DCI is used to indicate the transmission slot offset. The transmission repetition value (AggregationFactor) is used to configure the number of time slots of multiple time slots used for repeated transmission. Optionally, in this embodiment of the present application, the transmission repetition value is equal to n. Since the DCI and the transmission repetition value are configured by the network device and sent to the terminal device, in the case where the sender is a terminal device, it needs to receive the DCI and transmission repetition value sent by the network device, and then based on the timing information of the DCI and the transmission repetition value. Repeat values are transmitted to determine n time slots.

Optionally, determining n time slots based on the timing information of the DCI and the transmission repetition value, including: starting with the time slot indicated by the timing information of the DCI, determining the time for repeated transmission indicated by the transmission repetition value. slot to get n time slots.

It can be seen from the above description that the timing information of the DCI is used to indicate the transmission time slot offset, starting with the time slot indicated by the timing information of the DCI, combined with the configured transmission repetition value, the amount of time occupied by each repeated transmission can be determined. time slot. Optionally, when the DCI is used for downlink scheduling, the timing information of the DCI includes first timing information, and the first timing information is used to indicate the transmission time slot offset of the downlink transmission, that is, the receiving time slot of the DCI. and the transmission time slot offset between the downlink transmission time slot, optionally, the first timing information is the K0 value in the above description of time domain resource allocation and timing; when DCI is used for uplink scheduling, DCI The timing information includes second timing information, and the second timing information is used to indicate the transmission time slot offset of the uplink transmission, that is, the transmission time slot offset between the receiving time slot of the DCI and the uplink transmission time slot, Optionally, the second timing information is the K2 value in the above description of time-domain resource allocation and timing.

Step 520: For the first time slot in the n time slots, based on the m RVs, divide the first RE in the first time slot to obtain k RE sets.

The first time slot includes at least one time slot among the n time slots, that is, the first time slot may include one time slot among the n time slots, or the first time slot may include more than one time slot among the n time slots. timeslots, such as 2 timeslots, 3 timeslots, 4 timeslots, etc. Optionally, when the first time slot includes multiple time slots in the n time slots, the multiple time slots included in the first time slot are consecutive time slots; The multiple time slots are discontinuous time slots, and it is not limited whether the multiple time slots included in the first time slot are continuous in this embodiment of the present application.

For the first time slot, the embodiment of the present application divides the first REs in the first time slot based on m RVs to obtain k RE sets, each RE set includes at least one first RE, and m is positive Integer, k is a positive integer. The m RVs refer to the RVs that are uniformly selected by the transmitting end and the receiving end for repeated transmission. This embodiment of the present application does not limit the manner of determining m RVs. Optionally, m RVs are determined based on the first RE in the first time slot, the transmission repetition value, and the version indication information included in the DCI, and the version indication information is to indicate the RV corresponding to the initial transmission in the repeated transmission. Optionally, m RVs are determined through an algorithm, and based on the algorithm, m RVs can be obtained by taking the first RE in the first time slot, the transmission repetition value, and the version indication information included in the DCI as inputs. It should be noted that the m RVs determined in the embodiments of the present application include the RV number (ie, m) of the m RVs and/or the RV identifiers (Identifiers, IDs) of the m RVs.

The first RE refers to an RE that can be used for repeated transmission. Taking the first time slot including one time slot among n time slots as an example, as shown in FIG. 6 , which shows a schematic diagram of a time slot provided by an embodiment of the present application, the time slot includes 14 symbols, wherein the symbol 0 and symbol 11 are used for the transmission of the pre-demodulation reference signal and the additional demodulation reference signal, respectively, and the remaining 12 symbols (ie, symbol 1 to symbol 10 and symbol 12 to symbol 13) can be used for repeated transmission. Combining the 12 symbols and the 12 subcarriers (1 RB (Resource Block, resource block)) occupied in the frequency domain, it can be determined that the first time slot includes 144 REs, that is, the first time slot in the first time slot contains 144 REs. The number of REs is 144.

By dividing the first RE in the first slot based on the RV for repeated transmission, k RE sets can be obtained. Since the data characteristics corresponding to different RVs are different (that is, the numbers and positions of data bits and check bits contained in different RVs are different), the data corresponding to different RVs have different requirements for transmission resources, that is, the requirements for REs are different. The needs are also different. In an example, in the process of dividing the first RE in the first time slot to obtain k RE sets, the mapping relationship between m RVs and k RE sets may be determined at the same time. Based on this, the above based on m RVs, dividing the first REs in the first time slot to obtain k RE sets, including: dividing the first REs in the first time slot based on the number of RVs and RV identifiers of the m RVs to obtain k RE sets, and the mapping relationship between m RVs and k RE sets. By considering the number of RVs and the RV identifiers of m RVs while dividing the first REs in the first time slot, the segmentation can be selectively performed to achieve a higher fit with the specific RV identifiers of m RVs Spend. In another example, after dividing the first RE in the first time slot to obtain k RE sets, the mapping relationship between m RVs and k RE sets is determined. Based on this, the above is based on m RVs , dividing the first RE in the first time slot to obtain k RE sets, including: dividing the first RE in the first time slot based on the RV number of m RVs to obtain k RE sets. Optionally, on this basis, after the above-mentioned RV number m based on m RVs, the first RE in the first time slot is divided, and after k RE sets are obtained, it further includes: RV identifiers based on m RVs, Determine the mapping relationship between m RVs and k RE sets.

The embodiments of the present application do not limit the relationship between m and k. In one example, in the case where each RV transmitted at the same time only transmits once, that is, each RV transmits only once in the first time slot, m is equal to k, so that for each RV, from the first time The first RE in the slot is divided into a set of REs for the transmission of the RV. In another example, in the case where each RV transmitted at the same time transmits at least once, that is, there is a certain RV or some RVs in the m RVs transmit multiple times in the first time slot, k is greater than m, Therefore, for each RV that performs one transmission in the first time slot, a set of REs is divided from the first REs in the first time slot for the transmission of the RV; for each RV that performs multiple transmissions in the first time slot RV, split multiple RE sets from the first RE in the first slot for transmission of the RV.

For other introductory descriptions, such as the size relationship between the divided REs, m, and k, please refer to the descriptions of the following method embodiments, and details are not repeated here. It should be noted that, in this embodiment of the present application, only the first time slot in the n time slots is used as an example to describe the division of the first RE in the first time slot, and the division of the first RE in other time slots may be the same as The division of the first REs in the first time slot is the same, that is, the division manner of the first REs in each of the n time slots is the first division manner; The division of the REs may also be different from the division of the first REs in the first time slot, that is, the n time slots include the second time slot, and the way of dividing the first REs in the second time slot is different from that for the first REs in the second time slot. The division manners of the first REs in the first time slot are different. Different time slots in the n time slots can adopt different RE division methods, so that the flexible time slots can be fully and effectively used, so as to avoid the difference between the number of symbols available for data transmission in the flexible time slots and all uplink time slots or all downlink time slots. When the number of symbols available for data transmission in the time slot is not the same, the repeated transmission in the flexible time slot is ignored.

Wherein, the second time slot includes at least one time slot among the n time slots except the first time slot, that is, the second time slot may include one time slot among the n time slots, or, the second time slot Multiple time slots out of n time slots may be included, such as 2 time slots, 3 time slots, 4 time slots, and so on. Optionally, when the second time slot includes multiple time slots in the n time slots, the multiple time slots included in the second time slot are consecutive time slots; The multiple time slots are discontinuous time slots, and it is not limited whether the multiple time slots included in the second time slot are continuous in this embodiment of the present application. Optionally, the number of time slots included in the second time slot may be equal to the number of time slots included in the first time slot, or may not be equal to the number of time slots included in the first time slot, which is not limited in this embodiment of the present application.

Step 530, in the first time slot, transmit data corresponding to m RVs based on the k RE sets.

After dividing the first RE in the first time slot, the transmitting end can perform rate matching on the encoded data based on the m RVs to determine the data corresponding to each RV in the m RVs, and perform the rate matching on the coded data in the first time slot. In the time slot, the RE set corresponding to the RV is used to transmit the data corresponding to the RV. Based on this, in an example, the above step 530 includes: determining encoding parameters; encoding the data to be transmitted according to the encoding parameters to obtain a transmission code block; performing rate matching on the transmission code block based on m RVs to obtain the corresponding Data; based on k RE sets, transmit data corresponding to m RVs.

The encoding parameter refers to a parameter on which the data to be transmitted is encoded. This embodiment of the present application does not limit the specific content of the encoding parameter. Optionally, the encoding parameter includes a code rate and/or a size of a transmission code block. The embodiments of the present application also do not limit the specific manner of determining the encoding parameters. Several ways of determining encoding parameters are shown below.

In an example, the n time slots include a third time slot; the foregoing determining the coding parameter includes: determining the coding parameter based on the first RE in the third time slot. Wherein, the third time slot includes at least one time slot in n time slots, that is, the third time slot may include one time slot in n time slots, or the third time slot may include in n time slots multiple timeslots, such as 2 timeslots, 3 timeslots, 4 timeslots, etc.; optionally, when the third timeslot includes multiple timeslots in the n timeslots, the third timeslot The multiple time slots included in the slot are continuous time slots; or, the multiple time slots included in the third time slot are discontinuous time slots. Are the multiple time slots included in the third time slot in this embodiment of the present application? Continuous is not limited; optionally, the third time slot may be the above-mentioned first time slot, or may be at least one time slot other than the first time slot among the n time slots. In this embodiment of the present application, the coding parameter may be determined based on the first RE in one time slot or multiple time slots, optionally, the coding parameter is determined based on the number of REs of the first RE in one time slot or multiple time slots Sure.

In another example, the above-mentioned determining the encoding parameter includes: determining the encoding parameter based on the third RE set in the k RE sets. The number of REs included in the third RE set is the set with the largest number of REs included in the k RE sets, and the time slot occupied by the third RE set includes at least one time slot in the n time slots. That is, in this embodiment of the present application, the encoding parameter may also be determined based on the RE set (the third RE set) that contains the largest number of REs, and optionally, the encoding parameter is determined based on the number of REs included in the third RE set. Sure.

After determining the encoding parameter, the transmitting end encodes the data to be transmitted according to the encoding parameter, thereby obtaining the transmission code block. Based on the m RVs, the transmitting end may perform rate matching on the encoded transport code blocks to determine data corresponding to each RV. Optionally, the transmitting end can determine the bit size occupied by the transmitted data according to the REs that can be used for data transmission and the modulation method, and then the transmitting end can determine the bit size occupied by the m RVs and the transmitted data from the encoded data. The data corresponding to each RV is determined in the transmission code block. After that, the transmitting end only needs to transmit data corresponding to m RVs based on the k RE sets.

It should be noted that the data corresponding to the RV described in the embodiments of the present application refers to the data segment corresponding to the RV in the transmission code block obtained after encoding, and is not used to specifically refer to data bits. It should be understood that the data corresponding to the RV includes: data bits and/or redundant bits, that is, the data corresponding to the RV includes three cases: only data bits, only redundant bits, and both data bits and redundant bits. .

In one example, when the number of time slots for transmitting data corresponding to m RVs satisfies the transmission repetition value, the repeated transmission is stopped.

In order to reduce the processing overhead and signaling overhead of the transmitting end, in this embodiment of the present application, when the number of timeslots repeatedly transmitted by the transmitting end meets the transmission repetition value, repeated transmission may be stopped to avoid wasting transmission resources. It should be noted that the embodiments of the present application are designed to transmit multiple RVs at the same time on the basis of being compatible with the original data repetition transmission, such as compatibility with transmission repetition values, that is, multiple RVs are performed in the same time slot. , in order to achieve more repeated transmission times and improve the coverage enhancement effect. Therefore, what the transmission repetition value indicates is still the number of timeslots for repeated transmission, and the sender stops the repeated transmission when the number of timeslots for repeated transmission meets the transmission repetition value.

In an example, the above further includes: demodulating data corresponding to m RVs to obtain data demodulation results corresponding to the first time slot; combining the data demodulation results corresponding to the w time slots to obtain combined data , w is a positive integer less than or equal to n; decode the combined data.

When the receiving end receives the data corresponding to m RVs transmitted by the transmitting end in the first time slot, according to the above-mentioned method for the transmitting end to determine the mapping relationship between the first RE in the first time slot and the m RVs, to The first RE in the first time slot is divided to obtain k RE sets, and the RV corresponding to each RE set is determined, so that according to this information, the receiving end can The data is demodulated, and the demodulation result is obtained. After demodulation, the receiving end needs to combine the demodulation results, for example, performing IR (Incremental Redundancy, incremental redundancy) combination of soft bits on the demodulation results to obtain combined data. This embodiment of the present application does not limit the number of time slots corresponding to when the receiving end performs combining processing. Optionally, the receiving end combines demodulation results corresponding to one time slot; or, the receiving end demodulates corresponding to multiple time slots. The results are merged. Finally, the receiving end decodes the combined data.

In an example, the above method further includes: obtaining a feedback time slot based on the timing information of the DCI and the time slot when the repeated transmission is stopped; in the feedback time slot, transmitting feedback information, where the feedback information is used to indicate data reception.

After the transmitting end stops repeated transmission, the receiving end may determine a feedback time slot, and transmit feedback information to the transmitting end in the feedback time slot, so as to indicate the data reception situation to the transmitting end. Optionally, the feedback information includes ACK or NACK. When the repeated transmission is uplink repeated transmission, the sending end is a terminal device, and the receiving end is a network device; when the repeated transmission is downlink repeated transmission, the sending end is a network device, and the receiving end is a terminal device.

In this embodiment of the present application, the feedback time slot is determined based on the timing information of the DCI and the time slot when the transmitting end stops repeated transmission. Optionally, the timing information of the DCI includes third timing information, and the third timing information is used to indicate the transmission time slot offset of the feedback information, that is, the transmission time slot offset between the downlink data transmission and the feedback information, Optionally, the third timing information includes the above K1 value. Optionally, the feedback time slot is the sum of the time slot when the transmitting end stops repeated transmission and the transmission time slot offset indicated by the third timing information.

To sum up, in the technical solutions provided by the embodiments of the present application, the transmitting end divides the REs that can be used for repeated transmission in the time slot, and simultaneously transmits data corresponding to multiple redundant versions based on the divided REs, thereby realizing the Data transmission corresponding to multiple redundancy versions is performed in one time slot. Compared with only transmitting data corresponding to one redundancy version in one time slot, the embodiment of the present application realizes that under the configuration of limited transmission repetition value, the actual number of repeated transmissions is increased as much as possible, and the actual repetition is effectively avoided. The number of transmission time slots does not reach the transmission repetition value, and the ideal coverage enhancement effect cannot be achieved, which solves the problem of limited coverage and ensures effective repeated transmission between the terminal device and the network device. In addition, the embodiment of the present application divides the REs that can be used for repeated transmission in the time slot. The original RE design in the time slot improves the compatibility and adaptability of repeated transmission.

Next, the division of REs, the size relationship between m and k, and the like will be described.

First, the magnitude relationship between m and k is explained.

In one example, m is equal to k, and the m RVs correspond one-to-one with the k RE sets.

It can be known from the above description that in the case that each RV only transmits once in the first time slot, m and k are equal. Based on this, there is a one-to-one correspondence between the m RVs and the k RE sets, that is, each RE set in the k divided RE sets corresponds to one RV, and different RE sets correspond to different RVs.

Taking the first time slot including one time slot among n time slots as an example, as shown in FIG. 7 , it shows a schematic diagram of resource partitioning provided by an embodiment of the present application. Suppose: the first time slot is time slot n, and the number of RV versions is 4, which are RV ₀ , RV ₁ , RV ₂ and RV ₃ respectively. Then, after dividing the first RE in time slot n, 4 RE sets are obtained, and each RV corresponds to one RE set respectively.

In another example, m is less than k, and a first RV of the m RVs corresponds to at least two RE sets of the k RE sets.

It can be known from the above description that k is greater than m when there are m RVs in which the RV performs at least two transmissions in the first time slot. Based on this, among the m RVs, an RV that performs multiple transmissions corresponds to multiple RE sets, and an RV that performs one transmission corresponds to one RE set.

Taking the first time slot including one time slot among n time slots as an example, as shown in FIG. 8 , it shows a schematic diagram of resource partitioning provided by another embodiment of the present application. Suppose: the first time slot is time slot n, the number of RV versions is 4, which are RV ₀ , RV ₁ , RV ₂ and RV ₃ respectively, and RV ₀ transmits twice, RV ₁ , RV ₂ and RV ₃ respectively Make a transfer. Then, after dividing the first RE in time slot n, five RE sets are obtained, RV ₀ corresponds to two RE sets, and RV ₁ , RV ₂ and RV ₃ respectively correspond to one RE set.

Next, the number of REs included in k RE sets obtained by dividing REs will be described.

In an example, the number of REs included in each of the k RE sets is the first number of REs.

If the first REs in the first time slot are uniformly divided, the number of REs included in each RE set in the k RE sets obtained by the division is the same, that is, the number of the first REs is the same.

Taking the first time slot including one time slot among n time slots as an example, as shown in FIG. 7 , it shows a schematic diagram of resource partitioning provided by an embodiment of the present application. It is assumed that the first time slot is time slot n, the first RE in the first time slot occupies 12 symbols and 12 subcarriers, and 4 RE sets are obtained after dividing the first RE in the first time slot. Then there are a total of 144 REs in the first time slot, and each RE set in the 4 RE sets contains an equal number of REs, both of which are 36.

In another example, the number of REs included in the first RE set in the k RE sets is different from the number of REs included in the second RE set in the k RE sets.

If the first REs in the first time slot are non-uniformly divided, at least two RE sets in the k RE sets obtained by division have unequal numbers of REs, such as the first RE set in the k RE sets The number of included REs is not equal to the number of REs included in the second RE set in the k RE sets. Optionally, if there are other RE sets in the k RE sets, such as the third RE set, the number of REs included in the third RE set may be equal to the number of REs included in the first RE set, or may be equal to the number of REs included in the second RE set. The number of REs included in the set may also be different from the number of REs included in the first RE set and the number of REs included in the second RE set, which is not limited in this embodiment of the present application.

Taking the first time slot including one time slot among n time slots as an example, as shown in FIG. 9 , it shows a schematic diagram of resource partitioning provided by another embodiment of the present application. It is assumed that the first time slot is time slot n, the first RE in the first time slot occupies 12 symbols and 12 subcarriers, and 4 RE sets are obtained after dividing the first RE in the first time slot. Then there are 144 REs in the first time slot, and the number of REs included in the 4 RE sets are: 84, 24, 24, and 12 respectively.

Next, the subcarriers occupied by k RE sets obtained by dividing REs are introduced and explained.

In one example, the subcarriers occupied by each of the k RE sets are consecutive.

In the k RE sets obtained by dividing the first RE in the first time slot, there may be one or some RE sets occupying multiple subcarriers, optionally, multiple subcarriers occupied by the RE set occupying multiple subcarriers are consecutive subcarriers.

Taking the first time slot including one time slot among n time slots as an example, as shown in FIG. 7 , it shows a schematic diagram of resource partitioning provided by an embodiment of the present application. It is assumed that the first time slot is time slot n, the first RE in the first time slot occupies 12 symbols and 12 subcarriers, and 4 RE sets are obtained after dividing the first RE in the first time slot. As shown in FIG. 7 , each of the four RE sets occupies multiple subcarriers, and the subcarriers occupied by each RE set are consecutive.

In another example, subcarriers occupied by at least one RE set in the k RE sets are discontinuous.

In the k RE sets obtained by dividing the first REs in the first time slot, there may be one or some RE sets occupying multiple subcarriers, optionally, at least one RE exists in the RE sets occupying multiple subcarriers Sets occupy non-contiguous subcarriers. That is, the RE sets occupying multiple subcarriers all occupy non-contiguous subcarriers; or, some RE sets in the RE set occupying multiple subcarriers all occupy continuous subcarriers, and some RE sets all occupy non-consecutive subcarriers.

Taking the first time slot including one time slot among n time slots as an example, as shown in FIG. 10 , it shows a schematic diagram of resource division provided by another embodiment of the present application. It is assumed that the first time slot is time slot n, the first RE in the first time slot occupies 12 symbols and 12 subcarriers, and 4 RE sets are obtained after dividing the first RE in the first time slot. As shown in FIG. 10 , each of the four RE sets occupies multiple subcarriers, and the subcarriers occupied by each RE set are non-consecutive.

The above two examples both discuss the state of the subcarriers occupied by the RE set from the perspective of the RE set, and the following discusses the RE set corresponding to the subcarrier from the perspective of the subcarrier.

In an example, subcarriers occupied by at least two RE sets in the k RE sets include the first subcarrier.

The first RE in the first time slot occupies at least one subcarrier, and for the first subcarrier in the at least one subcarrier, the first subcarrier may correspond to one RE set, that is, subcarriers occupied by multiple RE sets There are no overlapping subcarriers in the ; alternatively, the first subcarrier may also correspond to multiple RE sets, that is, the same subcarrier exists in the subcarriers occupied by at least two RE sets in the multiple RE sets.

Taking the first time slot including one time slot among n time slots as an example, as shown in FIG. 11 , it shows a schematic diagram of resource partitioning provided by another embodiment of the present application. It is assumed that the first time slot is time slot n, the first RE in the first time slot occupies 12 symbols and 12 subcarriers, and 4 RE sets are obtained after dividing the first RE in the first time slot. As shown in FIG. 11 , two of the four RE sets occupy 9 subcarriers respectively, and the occupied subcarriers are the same; the other two RE sets respectively occupy 3 subcarriers, and the occupied subcarriers are also the same.

Finally, the division method of dividing RE is introduced and explained.

In an example, the above step 520 includes: determining a division pattern based on the first RE in the first time slot and the version indication information included in the DCI, where the version indication information is used to indicate the RV corresponding to the initial transmission in the repeated transmission; The first RE in the first time slot is divided according to the division pattern to obtain k RE sets.

For some simple ways of dividing the first RE, such as dividing the first RE evenly, the first RE can be divided directly after the terminal device and the network device specify the same dividing way; but for some complex ways of dividing the first RE For example, when the first RE is divided unevenly and one subcarrier corresponds to multiple RE sets, if the terminal equipment and the network equipment only have a clear and consistent division method, there may also be inconsistent division results on both sides. Therefore, here In this case, the terminal device and the network device may specify the same segmentation pattern, so that the first RE is segmented based on the segmentation pattern, thereby ensuring the same segmentation results obtained by the terminal device and the network device. Certainly, for a simple manner of dividing the first RE, the first RE may also be divided based on a division pattern, which is not limited in this embodiment of the present application.

Optionally, the division pattern is determined based on the RV corresponding to the initial transmission in the repeated transmission indicated by the first RE in the first time slot and the DCI. In this embodiment of the present application, the DCI includes version indication information, where the version indication information is used to indicate the RV corresponding to the initial transmission in the repeated transmission. Optionally, on the basis of determining the division pattern based on the first RE and version indication information in the first time slot, the division pattern may be further determined by combining the index indication of repeated transmission, that is, based on the division pattern in the first time slot. The division pattern is determined by the first RE, the index indication of repeated transmission, and the version indication information included in the DCI, so that different RE division modes can be adopted in different time slots. Wherein, the index indication of the repeated transmission may be a time slot index indication, which is used to indicate that the first time slot is the number of timeslots of the repeated transmission; or, the index indication of the repeated transmission may be a set index indication, which is used for The transmission of the data corresponding to the RV mapped to the RE set indicates the number of times of transmission, and the embodiment of the present application does not limit the specific expression of the index indication of repeated transmission.

Optionally, the segmentation pattern is determined through an algorithm; or, it is predefined through a communication protocol, which is not limited in this embodiment of the present application. In the case where the segmentation pattern is determined by an algorithm, based on the algorithm, the first RE in the first time slot and the version indication information included in the DCI are used as inputs, and optionally, the index indication of repeated transmission may be further combined as: Enter to get the split pattern. Optionally, the segmentation pattern may also be determined simultaneously with the m RVs through the same algorithm, or may be determined through a different algorithm with the m RVs, which is not limited in this embodiment of the present application. For example, as shown in FIG. 11 , which shows a schematic diagram of resource division provided by an embodiment of the present application, the schematic diagram of resource division can be used as a division pattern.

To sum up, in the technical solutions provided by the embodiments of the present application, for multiple RE sets obtained by dividing REs, the number of REs contained in each RE set may or may not be the same; the subcarriers corresponding to each RE set may be different. It can be continuous or discontinuous; a subcarrier can correspond to one RE set or multiple RE sets, thus realizing flexible division of resources for repeated transmission, effectively adapting to the requirements of different configurations for transmission resources, and improving the efficiency of repeated transmission. validity and reliability.

The following are apparatus embodiments of the present application, which can be used to execute the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

Please refer to FIG. 12 , which shows a block diagram of a repeated transmission apparatus provided by an embodiment of the present application. The apparatus has the function of implementing the above example of the repeated transmission method. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The apparatus may be the terminal device described above, or may be set in the terminal device; or, the apparatus may be the network device described above, or may be set in the network device. As shown in FIG. 12 , the apparatus 1200 may include: a time slot determination module 1210 , a resource division module 1220 and a data transmission module 1230 .

The time slot determination module 1210 is configured to determine n time slots for repeated transmission, where n is a positive integer.

The resource division module 1220 is configured to, for the first time slot in the n time slots, divide the first REs in the first time slot based on m RVs to obtain k RE sets, the m is a positive integer, and the k is a positive integer; wherein, the first time slot includes at least one time slot in the n time slots.

The data transmission module 1230 is configured to transmit, in the first time slot, data corresponding to the m RVs based on the k RE sets.

In one example, the m is equal to the k, and the m RVs are in a one-to-one correspondence with the k RE sets.

In one example, the m is less than the k, and a first RV of the m RVs corresponds to at least two RE sets of the k RE sets.

In an example, the number of REs included in the first RE set in the k RE sets is different from the number of REs included in the second RE set in the k RE sets.

In an example, subcarriers occupied by at least one RE set in the k RE sets are discontinuous.

In an example, the resource division module 1220 is configured to: determine a division pattern based on the version indication information included in the first RE and the DCI in the first time slot, where the version indication information is used to indicate the The RV corresponding to the initial transmission in the repeated transmission; the first RE in the first time slot is divided according to the division pattern to obtain the k RE sets.

In an example, determining the division pattern based on the first RE in the first time slot and the version indication information included in the DCI includes: based on the first RE in the first time slot, the repeated transmission The index indication of , and the version indication information determine the division pattern.

In one example, the index indication of the repeated transmission includes a slot index indication; or, the index indication of the repeated transmission includes a set index indication.

In an example, the division manners for the first REs in each of the n time slots are the first division manners.

In one example, the n time slots include a second time slot, and the second time slot includes at least one time slot other than the first time slot in the n time slots; for the The division manner of the first RE in the second time slot is different from the division manner of the first RE in the first time slot.

In an example, the time slot determining module 1210 is configured to: determine the n time slots based on timing information of DCI and a transmission repetition value, where the timing information of DCI is used to indicate a transmission time slot offset.

In an example, the time slot determining module 1210 is configured to: start with the time slot indicated by the timing information of the DCI, and determine the time slot indicated by the transmission repetition value for the repeated transmission , the n time slots are obtained.

In an example, the timing information of the DCI includes first timing information and/or second timing information; wherein the first timing information is used to indicate a transmission slot offset of uplink transmission, and the second timing information The information is used to indicate the transmission slot offset for downlink transmission.

In an example, as shown in FIG. 13 , the above-mentioned apparatus 1200 further includes: a version determination module 1290, configured to determine, based on the first RE in the first time slot, the transmission repetition value and the version indication information included in the DCI, For the m RVs, the version indication information is used to indicate the RV corresponding to the initial transmission in the repeated transmission.

In an example, the above-mentioned resource dividing module 1220 is configured to: based on the number of RVs of the m RVs, divide the first REs in the first time slot to obtain the k RE sets.

In an example, the above resource partitioning module 1220 is further configured to: determine the mapping relationship between the m RVs and the k RE sets based on the RV identifiers of the m RVs.

In an example, the above-mentioned resource partitioning module 1220 is configured to: based on the number of RVs and RV identifiers of the m RVs, partition the first RE in the first time slot to obtain the set of k REs, and the mapping relationship between the m RVs and the k RE sets.

In an example, as shown in FIG. 13 , the data transmission module 1230 includes: a parameter determination unit 1231 for determining encoding parameters; a data encoding unit 1233 for encoding the data to be transmitted according to the encoding parameters to obtain transmission code block; the rate matching unit 1235 is configured to perform rate matching on the transmission code block based on the m RVs to obtain data corresponding to the m RVs; the data transmission unit 1237 is configured to perform rate matching based on the k RVs RE set, and transmit data corresponding to the m RVs.

In an example, the n time slots include a third time slot, and the third time slot includes at least one time slot in the n time slots; the parameter determining unit 1231 is configured to: based on the The first RE in the third time slot is used to determine the encoding parameter.

In an example, the parameter determining unit 1231 is configured to: determine the encoding parameter based on a third RE set in the k RE sets; wherein the number of REs included in the third RE set is The set with the largest number of REs included in the k RE sets, and the time slot occupied by the third RE set includes at least one time slot in the n time slots.

In one example, the encoding parameters include a code rate and/or a size of the transport code block.

In one example, when the number of time slots for transmitting data corresponding to the m RVs satisfies a transmission repetition value, the repeated transmission is stopped.

In an example, as shown in FIG. 13 , the apparatus 1200 further includes: a data demodulation module 1240, configured to demodulate the data corresponding to the m RVs to obtain a data solution corresponding to the first time slot The data merging module 1250 is used for merging the data demodulation results corresponding to the w time slots to obtain the merged data, where the w is a positive integer less than or equal to the n; the decoding processing module 1260, using for decoding the combined data.

In an example, as shown in FIG. 13 , the apparatus 1200 further includes: a time slot calculation module 1270, configured to obtain a feedback time slot based on the DCI timing information and the time slot when the repeated transmission is stopped; a feedback transmission module 1280: In the feedback time slot, transmit feedback information, where the feedback information is used to indicate a data reception situation.

In one example, the timing information of the DCI includes third timing information, where the third timing information is used to indicate a transmission slot offset of the feedback information.

To sum up, in the technical solutions provided by the embodiments of the present application, the transmitting end divides the REs that can be used for repeated transmission in the time slot, and simultaneously transmits data corresponding to multiple redundant versions based on the divided REs, thereby realizing the Data transmission corresponding to multiple redundancy versions is performed in one time slot. Compared with only transmitting data corresponding to one redundancy version in one time slot, the embodiment of the present application realizes that the actual number of repeated transmissions is increased as much as possible under the configuration of a limited transmission repetition value, which effectively avoids The number of transmission time slots does not reach the transmission repetition value, and the ideal coverage enhancement effect cannot be achieved, which solves the problem of limited coverage and ensures effective repeated transmission between the terminal device and the network device. In addition, the embodiment of the present application divides the REs that can be used for repeated transmission in the time slot. The original RE design in the time slot improves the compatibility and adaptability of repeated transmission.

It should be noted that, when the device provided in the above embodiment realizes its functions, only the division of the above functional modules is used as an example for illustration. In practical applications, the above functions can be allocated to different functional modules according to actual needs. That is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.

Regarding the apparatus in the above-mentioned embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be described in detail here.

Please refer to FIG. 14 , which shows a schematic structural diagram of a device 140 provided by an embodiment of the present application. For example, the device can be used to execute the above-mentioned repeated transmission method. Optionally, the device is a terminal device; or, the device is a network device. Specifically, the device 140 may include: a processor 141, and a transceiver 142 connected to the processor 141; wherein:

The processor 141 includes one or more processing cores, and the processor 141 executes various functional applications and information processing by running software programs and modules.

Transceiver 142 includes a receiver and a transmitter. Optionally, transceiver 142 is a communication chip.

In one example, device 140 also includes: a memory and a bus. The memory is connected to the processor through a bus. The memory can be used to store a computer program, and the processor is used to execute the computer program, so as to implement the various steps in the above method embodiments.

In addition, the memory can be implemented by any type of volatile or non-volatile storage device or a combination thereof. Volatile or non-volatile storage devices include but are not limited to: RAM (Random-Access Memory, random access memory) and ROM (Read-Only Memory), EPROM (Erasable Programmable Read-Only Memory, Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory, Electrically Erasable Programmable Read-Only Memory) ), flash memory or other solid-state storage technology, CD-ROM (Compact Disc Read-Only Memory), DVD (Digital Video Disc, high-density digital video disc) or other optical storage, tape cassettes, magnetic tape, disk storage or other magnetic storage devices. in:

The processor 141 is configured to determine n time slots for repeated transmission, where n is a positive integer.

The processor 141 is further configured to, for the first time slot in the n time slots, divide the first REs in the first time slot based on m RVs to obtain k RE sets, where The m is a positive integer, and the k is a positive integer; wherein, the first time slot includes at least one time slot in the n time slots.

The transceiver 142 is configured to transmit, in the first time slot, data corresponding to the m RVs based on the k RE sets.

In an example, the processor 141 is configured to: determine a division pattern based on the version indication information included in the first RE in the first time slot and the DCI, where the version indication information is used to indicate the repetition The RV corresponding to the initial transmission in the transmission; the first RE in the first time slot is divided according to the division pattern to obtain the k RE sets.

In an example, the processor 141 is configured to: determine the n time slots based on timing information of DCI and a transmission repetition value, where the timing information of DCI is used to indicate a transmission slot offset.

In an example, the processor 141 is configured to: start with the time slot indicated by the timing information of the DCI, determine the time slot indicated by the transmission repetition value for the repeated transmission, and obtain the n time slots.

In an example, the processor 141 is configured to: determine the m RVs based on the first RE in the first time slot, the transmission repetition value, and the version indication information included in the DCI, where the version indicates The information is used to indicate the RV corresponding to the initial transmission in the repeated transmission.

In an example, the processor 141 is configured to: based on the RV numbers of the m RVs, divide the first REs in the first time slot to obtain the k RE sets.

In an example, the processor 141 is further configured to: determine the mapping relationship between the m RVs and the k RE sets based on the RV identifiers of the m RVs.

In an example, the processor 141 is configured to: based on the number of RVs and the RV identifiers of the m RVs, divide the first RE in the first time slot to obtain the set of k REs, and the mapping relationship between the m RVs and the k RE sets.

In an example, the processor 141 is further configured to: determine an encoding parameter; encode the data to be transmitted according to the encoding parameter to obtain a transmission code block; based on the m RVs, perform a rate calculation on the transmission code block matching, to obtain data corresponding to the m RVs; the transceiver 142 is configured to transmit data corresponding to the m RVs based on the k RE sets.

In an example, the n time slots include a third time slot, and the third time slot includes at least one time slot in the n time slots; the processor 141 is further configured to: based on the The first RE in the third time slot is used to determine the encoding parameter.

In an example, the processor 141 is further configured to: determine the encoding parameter based on a third RE set in the k RE sets; wherein the number of REs included in the third RE set is The set with the largest number of REs included in the k RE sets, and the time slot occupied by the third RE set includes at least one time slot in the n time slots.

In an example, the processor 141 is further configured to: demodulate the data corresponding to the m RVs to obtain a data demodulation result corresponding to the first time slot; combine the corresponding data of the w time slots From the data demodulation result, combined data is obtained, and the w is a positive integer less than or equal to the n; the combined data is decoded.

In an example, the processor 141 is further configured to: obtain a feedback time slot based on the timing information of the DCI and the time slot when the repeated transmission is stopped; the transceiver 142 is further configured to: in the feedback In the time slot, feedback information is transmitted, and the feedback information is used to indicate the data reception situation.

Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of a device, so as to implement the above-mentioned repeated transmission method.

Embodiments of the present application further provide a chip, where the chip includes a programmable logic circuit and/or program instructions, and when the chip runs on a device, it is used to implement the above-mentioned repeated transmission method.

The embodiments of the present application also provide a computer program product, which is used to implement the above-mentioned repeated transmission method when the computer program product runs on the device.

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

The above are only exemplary embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection of the present application. within the range.

Claims

A method for repeated transmission, characterized in that the method comprises:

determining n time slots for repeated transmission, where n is a positive integer;

For the first time slot in the n time slots, based on m redundancy versions RV, the first resource element REs in the first time slot are divided to obtain k RE sets, where m is positive Integer, the k is a positive integer; wherein, the first time slot includes at least one time slot in the n time slots;

In the first time slot, data corresponding to the m RVs are transmitted based on the k RE sets.
The method of claim 1, wherein the m is equal to the k, and the m RVs are in a one-to-one correspondence with the k RE sets.
The method of claim 1, wherein the m is less than the k, and a first RV of the m RVs corresponds to at least two RE sets of the k RE sets.
The method according to any one of claims 1 to 3, wherein the number of REs included in each RE set in the k RE sets is the first number of REs.
The method according to any one of claims 1 to 3, wherein the number of REs included in the first RE set in the k RE sets is the same as the number of REs included in the second RE set in the k RE sets The number of REs included is not the same.
The method according to any one of claims 1 to 5, wherein the subcarriers occupied by each RE set in the k RE sets are consecutive.
The method according to any one of claims 1 to 5, wherein subcarriers occupied by at least one RE set in the k RE sets are discontinuous.
The method according to any one of claims 1 to 7, wherein subcarriers occupied by at least two RE sets in the k RE sets include the first subcarrier.
The method according to any one of claims 1 to 8, wherein the first RE in the first time slot is divided based on the m redundancy versions RV used for the repeated transmission, Get k RE sets, including:

determining a division pattern based on the version indication information included in the first RE and the DCI in the first time slot, where the version indication information is used to indicate the RV corresponding to the initial transmission in the repeated transmission;

The first REs in the first time slot are divided according to the division pattern to obtain the k RE sets.
The method according to any one of claims 1 to 9, characterized in that, the division modes for the first REs in each of the n time slots are all the first division modes.
The method according to any one of claims 1 to 9, wherein the n time slots include a second time slot, and the second time slot includes the n time slots divided by the first time slot At least one time slot other than the time slot; the division mode for the first RE in the second time slot is different from the division mode for the first RE in the first time slot.
The method according to any one of claims 1 to 11, wherein the determining of n time slots for repeated transmission comprises:

The n time slots are determined based on the timing information of the downlink control information DCI and the transmission repetition value, and the timing information of the DCI is used to indicate the transmission time slot offset.
The method according to claim 12, wherein, determining the n time slots based on the DCI timing information and transmission repetition value, comprising:

Starting from the time slot indicated by the timing information of the DCI, the time slot indicated by the transmission repetition value for the repeated transmission is determined to obtain the n time slots.
The method according to claim 12 or 13, wherein the timing information of the DCI includes first timing information and/or second timing information;

The first timing information is used to indicate the transmission time slot offset of uplink transmission, and the second timing information is used to indicate the transmission time slot offset of downlink transmission.
The method according to any one of claims 1 to 14, wherein the method further comprises:

The m RVs are determined based on the first RE in the first time slot, the transmission repetition value, and the version indication information included in the DCI, where the version indication information is used to indicate that the initial transmission in the repeated transmission corresponds to RV.
The method according to any one of claims 1 to 15, wherein the first RE in the first time slot is divided based on m RVs to obtain k RE sets, including:

Based on the number of RVs of the m RVs, the first REs in the first time slot are divided to obtain the k RE sets.
The method according to claim 16, wherein the first RE in the first time slot is divided based on the RV number m of the m RVs, and after the k RE sets are obtained, Also includes:

Based on the RV identifiers of the m RVs, a mapping relationship between the m RVs and the k RE sets is determined.
The method according to any one of claims 1 to 15, wherein the first RE in the first time slot is divided based on m RVs to obtain k RE sets, including:

Based on the RV numbers and RV identifiers of the m RVs, the first REs in the first time slot are divided to obtain the k RE sets and the sum of the m RVs and the k RE sets mapping relationship between.
The method according to any one of claims 1 to 18, wherein the transmitting data corresponding to the m RVs based on the k RE sets comprises:

determine encoding parameters;

The data to be transmitted is encoded according to the encoding parameters to obtain a transmission code block;

performing rate matching on the transport code block based on the m RVs to obtain data corresponding to the m RVs;

Based on the k RE sets, data corresponding to the m RVs are transmitted.
The method according to claim 19, wherein the n time slots include a third time slot, and the third time slot includes at least one time slot in the n time slots;

The determining encoding parameters includes:

The coding parameters are determined based on the first RE in the third time slot.
The method according to claim 19, wherein the determining the encoding parameter comprises:

determining the encoding parameter based on a third RE set in the k RE sets;

The number of REs included in the third RE set is the set with the largest number of REs included in the k RE sets, and the time slots occupied by the third RE set include the number of REs in the n time slots. at least one time slot.
The method according to any one of claims 19 to 21, wherein the encoding parameter includes a code rate and/or a size of the transmission code block.
The method according to any one of claims 1 to 22, wherein the repeated transmission is stopped when the number of time slots for transmitting data corresponding to the m RVs satisfies a transmission repetition value.
The method according to any one of claims 1 to 23, wherein after determining the n time slots for repeated transmission, the method further comprises:

demodulating data corresponding to the m RVs to obtain a data demodulation result corresponding to the first time slot;

merging the data demodulation results corresponding to the w time slots respectively to obtain the merged data, where the w is a positive integer less than or equal to the n;

Decoding is performed on the combined data.
The method of claim 24, wherein the method further comprises:

Based on the timing information of the DCI and the time slot when the repeated transmission is stopped, the feedback time slot is obtained;

In the feedback time slot, feedback information is transmitted, and the feedback information is used to indicate the data reception situation.
The method according to claim 25, wherein the timing information of the DCI includes third timing information, and the third timing information is used to indicate a transmission slot offset of the feedback information.
The method according to any one of claims 1 to 26, wherein the method is applied in a terminal device; or, the method is applied in a network device.
A repeated transmission device, characterized in that the device comprises:

a time slot determination module, configured to determine n time slots for repeated transmission, where n is a positive integer;

A resource division module, configured to divide the first resource element REs in the first time slot based on m redundancy versions RV for the first time slot in the n time slots to obtain a set of k REs , the m is a positive integer, and the k is a positive integer; wherein, the first time slot includes at least one time slot in the n time slots;

A data transmission module, configured to transmit, in the first time slot, data corresponding to the m RVs based on the k RE sets.
29. The apparatus of claim 28, wherein the m is equal to the k, and the m RVs are in a one-to-one correspondence with the k RE sets.
29. The apparatus of claim 28, wherein the m is less than the k, and a first RV of the m RVs corresponds to at least two RE sets of the k RE sets.
The apparatus according to any one of claims 28 to 30, wherein the number of REs included in each RE set in the k RE sets is the first number of REs.
The apparatus according to any one of claims 28 to 30, wherein the number of REs included in the first RE set in the k RE sets is the same as the number of REs included in the second RE set in the k RE sets The number of REs included is not the same.
The apparatus according to any one of claims 28 to 32, wherein the subcarriers occupied by each RE set in the k RE sets are consecutive.
The apparatus according to any one of claims 28 to 32, wherein subcarriers occupied by at least one RE set in the k RE sets are discontinuous.
The apparatus according to any one of claims 28 to 34, wherein subcarriers occupied by at least two RE sets in the k RE sets include the first subcarrier.
The apparatus according to any one of claims 27 to 35, wherein the resource partitioning module is configured to:

determining a division pattern based on the version indication information included in the first RE and the DCI in the first time slot, where the version indication information is used to indicate the RV corresponding to the initial transmission in the repeated transmission;

The first REs in the first time slot are divided according to the division pattern to obtain the k RE sets.
The apparatus according to any one of claims 28 to 36, characterized in that, the division modes for the first REs in each of the n time slots are all the first division modes.
The apparatus according to any one of claims 28 to 36, wherein the n time slots include a second time slot, and the second time slot includes the n time slots divided by the first time slot At least one time slot other than the time slot; the division mode for the first RE in the second time slot is different from the division mode for the first RE in the first time slot.
The apparatus according to any one of claims 28 to 38, wherein the time slot determination module is configured to:

The n time slots are determined based on the timing information of the downlink control information DCI and the transmission repetition value, and the timing information of the DCI is used to indicate the transmission time slot offset.
The apparatus according to claim 39, wherein the time slot determination module is configured to:

Starting from the time slot indicated by the timing information of the DCI, the time slot indicated by the transmission repetition value for the repeated transmission is determined to obtain the n time slots.
The apparatus according to claim 39 or 40, wherein the timing information of the DCI includes first timing information and/or second timing information;

The first timing information is used to indicate the transmission time slot offset of uplink transmission, and the second timing information is used to indicate the transmission time slot offset of downlink transmission.
The device according to any one of claims 28 to 41, wherein the device further comprises:

a version determination module, configured to determine the m RVs based on the first RE in the first time slot, the transmission repetition value and the version indication information included in the DCI, where the version indication information is used to indicate the repeated transmission The RV corresponding to the initial transmission in .
The apparatus according to any one of claims 28 to 42, wherein the resource partitioning module is configured to:

Based on the number of RVs of the m RVs, the first REs in the first time slot are divided to obtain the k RE sets.
The apparatus according to claim 43, wherein the resource partitioning module is further configured to:

Based on the RV identifiers of the m RVs, a mapping relationship between the m RVs and the k RE sets is determined.
The apparatus according to any one of claims 28 to 42, wherein the resource partitioning module is configured to:

Based on the RV numbers and RV identifiers of the m RVs, the first REs in the first time slot are divided to obtain the k RE sets and the sum of the m RVs and the k RE sets mapping relationship between.
The device according to any one of claims 28 to 45, wherein the data transmission module comprises:

a parameter determination unit, used to determine encoding parameters;

a data encoding unit, configured to encode the data to be transmitted according to the encoding parameter to obtain a transmission code block;

a rate matching unit, configured to perform rate matching on the transport code block based on the m RVs to obtain data corresponding to the m RVs;

A data transmission unit, configured to transmit data corresponding to the m RVs based on the k RE sets.
The apparatus of claim 46, wherein the n time slots include a third time slot, and the third time slot includes at least one time slot in the n time slots;

The parameter determination unit is used for:

The coding parameters are determined based on the first RE in the third time slot.
The device according to claim 46, wherein the parameter determination unit is configured to:

determining the encoding parameter based on a third RE set in the k RE sets;

The number of REs included in the third RE set is the set with the largest number of REs included in the k RE sets, and the time slots occupied by the third RE set include the number of REs in the n time slots. at least one time slot.
The apparatus according to any one of claims 46 to 48, wherein the encoding parameter includes a code rate and/or a size of the transmission code block.
The apparatus according to any one of claims 28 to 49, wherein the repeated transmission is stopped when the number of time slots for transmitting data corresponding to the m RVs satisfies a transmission repetition value.
The device according to any one of claims 28 to 50, wherein the device further comprises:

a data demodulation module, configured to demodulate data corresponding to the m RVs to obtain a data demodulation result corresponding to the first time slot;

a data merging module, configured to merge the data demodulation results corresponding to the w time slots respectively, to obtain merged data, where the w is a positive integer less than or equal to the n;

A decoding processing module, configured to perform decoding processing on the combined data.
The apparatus of claim 51, wherein the apparatus further comprises:

a time slot calculation module for obtaining a feedback time slot based on the timing information of the DCI and the time slot when the repeated transmission is stopped;

A feedback transmission module, configured to transmit feedback information in the feedback time slot, where the feedback information is used to indicate a data reception situation.
The apparatus according to claim 52, wherein the timing information of the DCI includes third timing information, and the third timing information is used to indicate a transmission slot offset of the feedback information.
The apparatus according to any one of claims 28 to 52, wherein the apparatus is set in a terminal device; or, the apparatus is set in a network device.
A device, characterized in that the device comprises: a processor, and a transceiver connected to the processor; wherein:

the processor, configured to determine n time slots for repeated transmission, where n is a positive integer;

The processor is further configured to, for the first time slot in the n time slots, divide the first resource element REs in the first time slot based on the m redundancy versions RV to obtain k RE set, the m is a positive integer, and the k is a positive integer; wherein, the first time slot includes at least one time slot in the n time slots;

The transceiver is configured to transmit, in the first time slot, data corresponding to the m RVs based on the k RE sets.
The device according to claim 55, wherein the device is a terminal device; or, the device is a network device.
A computer-readable storage medium, characterized in that a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of a device, so as to realize the repetition according to any one of claims 1 to 27 transfer method.
The computer-readable storage medium according to claim 57, wherein the device is a terminal device; or, the device is a network device.