CN116349181A

CN116349181A - Repeated transmission method, device, equipment and storage medium

Info

Publication number: CN116349181A
Application number: CN202080106999.1A
Authority: CN
Inventors: 崔胜江
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2023-06-27
Also published as: WO2022120600A1

Abstract

The application provides a repeated transmission method, a repeated transmission device, repeated transmission equipment and a storage medium, and relates to the technical field of communication. The method comprises the following steps: determining n time slots for repeated transmission; dividing a first RE in a first time slot based on m RVs aiming at the first time slot in n time slots to obtain k RE sets; and in the first time slot, transmitting data corresponding to m RVs based on k RE sets. According to the embodiment of the application, the data corresponding to the redundancy versions are transmitted in one time slot, so that the actual repeated transmission times are increased as much as possible under the configuration of limited transmission repetition values, the problem of limited coverage is solved, and effective repeated transmission between the terminal equipment and the network equipment is ensured. In addition, the method and the device for transmitting the data in the wireless communication system improve effectiveness of repeated transmission, and improve compatibility and adaptability of repeated transmission.

Description

Repeated transmission method, device, equipment and storage medium

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a repeated transmission method, a repeated transmission device, repeated transmission equipment and a storage medium.

Background

In order to improve reliability of data transmission, 3GPP (3 rd Generation Partnership Project, third generation partnership project) introduces a data retransmission mechanism in an NR (New Radio) system.

The data retransmission mechanism refers to that a transmitting end uses the same symbol allocation scheme in a plurality of consecutive time slots (slots) to transmit the same TB (Transport Block) multiple times. Under the condition that the length of the TB is longer, the sending end needs to segment the TB, then each segment in the segmented TB is respectively encoded, and the encoded data is placed in the annular buffer area. Then, in each transmission process, the transmitting end performs rate matching on the data after TB encoding based on RV (Redundant Version, redundancy version) to determine the data transmitted to the receiving end in the transmission process. In addition, in the data retransmission mechanism, an aggregation factor (aggregation factor) is also defined to indicate the number of timeslots that need to be retransmitted, and for convenience of description, in this embodiment, the aggregation factor is collectively referred to as a transmission repetition value. Based on this, if there are time slots that do not meet the data transmission requirement in the plurality of consecutive time slots, the repeated transmission in the time slots that do not meet the data transmission requirement will be ignored, and the number of actually performed repeated transmission does not meet the transmission repetition value, so that the ideal coverage enhancement effect cannot be achieved.

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

Disclosure of Invention

The embodiment of the application provides a repeated transmission method, a repeated transmission device, repeated transmission equipment and a storage medium. The technical scheme is as follows:

in one aspect, an embodiment of the present application provides a retransmission method, where the method includes:

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

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

and transmitting data corresponding to the m RVs based on the k RE sets in the first time slot.

Optionally, the above repeated transmission method is applied to the terminal device; alternatively, the above repeated transmission method is applied to the network device.

In another aspect, an embodiment of the present application provides a retransmission apparatus, including:

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

The resource segmentation module is used for segmenting a first RE in the first time slot based on m RVs for the first time slot in the n time slots to obtain k RE sets, wherein m is a positive integer, and k is a positive integer; wherein the first time slot includes at least one time slot of the n time slots;

and the data transmission module is used for transmitting the data corresponding to the m RVs based on the k RE sets in the first time slot.

Optionally, the repeated transmission device is arranged in the terminal equipment; alternatively, the repeating transmission device is provided in the network equipment.

In yet another aspect, an embodiment of the present application provides an apparatus, including: a processor, and a transceiver coupled to the processor; wherein:

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

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

And 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 device is a terminal device; alternatively, the device is a network device.

In yet another aspect, embodiments of the present application provide a computer-readable storage medium having stored therein a computer program for execution by a processor of a device to implement a retransmission method as described above.

In yet another aspect, embodiments of the present application provide a chip including programmable logic circuits and/or program instructions for implementing a retransmission method as described above when the chip is run on a device.

In yet another aspect, embodiments of the present application provide a computer program product for implementing a retransmission method as described above when the computer program product is run on a device.

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

the RE which can be used for repeated transmission in the time slot is segmented by the sending end, and data corresponding to a plurality of redundancy versions are simultaneously transmitted based on the segmented RE, so that the data corresponding to the redundancy versions is transmitted in one time slot. Compared with the case that only data corresponding to one redundancy version is transmitted in one time slot, the embodiment of the application realizes that the actual repeated transmission times are increased as much as possible under the configuration of limited transmission repeated values, effectively avoids the situation that the ideal coverage enhancement effect cannot be realized because the number of the time slots of the actual repeated transmission does not reach the transmission repeated values, solves the problem of coverage limitation, and ensures the effective repeated transmission between the terminal equipment and the network equipment. In addition, in the embodiment of the application, REs which can be used for repeated transmission in a time slot are segmented, so that on one hand, the segmented REs can effectively transmit data corresponding to redundancy versions, and the effectiveness of repeated transmission is improved; on the other hand, the method is compatible with the original RE design in the time slot, and improves the compatibility and adaptability of repeated transmission.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

FIG. 2 is a schematic diagram of a self-contained time slot provided in one embodiment of the present application;

FIG. 3 is a schematic diagram of a timing relationship provided by one embodiment of the present application;

fig. 4 is a schematic diagram of a combination of data retransmission and flexible slot structure provided in one embodiment of the present application;

fig. 5 is a flowchart of a retransmission method according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a time slot provided by one embodiment of the present application;

FIG. 7 is a schematic diagram of resource partitioning provided by one embodiment of the present application;

FIG. 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 in accordance with yet another embodiment of the present application;

FIG. 10 is a schematic view of resource partitioning provided by yet another embodiment of the present application;

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

fig. 12 is a block diagram of a retransmission apparatus provided in one embodiment of the present application;

fig. 13 is a block diagram of a retransmission apparatus provided in another embodiment of the present application;

fig. 14 is a block diagram of an apparatus according to an embodiment of the present application.

Detailed Description

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

The network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided in the embodiments of the present application is also applicable to similar technical problems.

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

The number of terminal devices 10 is typically plural, and one or more terminal devices 10 may be distributed within a cell managed by each network device 20. The terminal device 10 may include various handheld devices, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of User Equipment (UE), mobile Station (MS), and the like, having wireless communication capabilities. For convenience of description, in the embodiment of the present application, the above-mentioned devices are collectively referred to as a terminal device.

The network device 20 is a means deployed in the access network to provide wireless communication functionality 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. The names of network device-capable devices may vary in systems employing different Radio access technologies, such as in 5G NR systems or NR-U (New Radio-Unlicensed) systems, referred to as gndeb or gNB. As communication technology evolves, the name "network device" may change. For convenience of description, in the embodiment of the present application, the above-mentioned devices for providing the terminal device 10 with the wireless communication function are collectively referred to as a network device.

The "5G NR system" in the embodiments of the present application may also be referred to as a 5G system or an NR system, but a person skilled in the art may understand the meaning thereof. The technical scheme described in the embodiment of the application can be applied to a 5G NR system or an NR-U system, and also can be applied to a subsequent evolution system of the 5G NR system or the NR-U system.

Before describing the technical solution of the embodiments of the present application, some terms and related technologies appearing in the embodiments of the present application are described.

1. And a data repetition transmission mechanism.

In order to improve the reliability of data transmission, 3GPP introduced a data retransmission mechanism in the NR system. The data retransmission mechanism refers to that the transmitting end uses the same symbol allocation scheme in a plurality of consecutive slots to transmit the same TB multiple times. Under the condition that the length of the TB is longer, the sending end needs to segment the TB, then each segment in the segmented TB is respectively encoded, and the encoded data is placed in the annular buffer area. And then, in each transmission process, the sending end carries out rate matching on the TB coded data based on RV so as to determine the data transmitted to the receiving end in the transmission process.

In addition, an aggregation factor (aggregation factor) is also defined in the data retransmission mechanism, so as to indicate the number of timeslots that need to be retransmitted, and for convenience of description, in this embodiment, the aggregation factor is collectively referred to as a transmission repetition value. For repeated transmission of downlink data in the PDSCH (Physical Downlink Shared Channel), that is, in the case that the transmitting end is a network device, the transmission repetition value is defined as a parameter PDSCH-aggregation factor (downlink transmission repetition value); for the repeated transmission of uplink data in the PUSCH (Physical Uplink Shared Channel), that is, in the case where the transmitting end is a terminal device, the transmission repetition value is defined as a parameter PUSCH-aggregation factor (uplink transmission repetition value). Optionally, the transmission repetition value includes any one of: 1. 2, 4 and 8.

In one example, when the transmission repetition value is greater than 1, that is, when the parameter pdsch-aggregation factor >1 or the parameter pusch-aggregation factor >1, the transmitting end will transmit the same TB multiple times using the same symbol allocation scheme in a plurality of consecutive slots having the number of slots equal to the transmission repetition value. Optionally, in each transmission process, the RV corresponding to the data transmitted by the transmitting end is shown in the following table one and the following table two.

TABLE RV setting when parameter pdsch Aggregation factor >1

TABLE II RV setting when parameter pusch-Aggregation factor >1

2. Flexible slot structure.

The NR system achieves the effect of FDD (Frequency Division Duplex ) by configuring OFDM (Orthogonal Frequency Division Multiplexing, orthogonal frequency division multiple access) symbols in a slot as either uplink symbols or downlink symbols in consideration of flexibility of a frame structure. In addition, the uplink and downlink configuration period of the TDD (Time Division Duplex ) band may be flexibly configured, for example, may be configured to be various period lengths such as 0.5ms (millisecond), 0.625ms, 1ms, 1.25ms, 2ms, 2.5ms, 5ms, and 10ms through signaling. In addition, the concept of self-contained time slots and flexible time slot structures is introduced in NR systems.

As shown in fig. 2, a schematic diagram of a self-contained time slot provided in one embodiment of the present application is shown. The self-contained slot means that the data portion and the feedback channel are contained in one slot in order to reduce the time delay between data transmission and ACK/NACK (acknowledgement/non-acknowledgement) feedback. For example, for downlink data reception, the terminal device may implement data reception and feedback (i.e. ACK/NACK) corresponding to the data reception situation in the same time slot, and when the terminal device receives downlink data, for example, decoding of the reference signal and the downlink control information has been completed, so that decoding of the downlink data can be started immediately; according to the decoding result of the downlink data, the terminal equipment can prepare uplink control information such as ACK/NACK and the like in the period of downlink and uplink switching; upon switching to the uplink, the terminal device transmits uplink control information. Therefore, the self-contained time slot can enable the network equipment and the terminal equipment to complete interaction of data in one time slot, so that time delay caused by feedback can be greatly reduced.

The flexible time slot structure, that is, each symbol in a time slot is not only fixedly configured as an uplink symbol and a downlink symbol, but also can be configured as a flexible attribute symbol, wherein the flexible attribute symbol can be used as a protection symbol or a protection interval for uplink and downlink conversion time, and can also be dynamically indicated based on a physical layer control channel to be effective as a downlink symbol or an uplink symbol in real time, thereby achieving the effect of flexibly supporting service diversity. According to different symbol configurations in the time slot, the NR system comprises a full downlink time slot, a full uplink time slot, a full flexible time slot, and time slot structures with different numbers of downlink symbols, uplink symbols and flexible symbols, wherein the different time slot structures respectively correspond to one time slot format index.

3. Time domain resource allocation and timing.

The NR system considers the flexibility of scheduling, and especially requires extremely short delay for the URLLC (Ultra Reliable and Low Latency Communications, ultra-high reliability and low delay communication) service, and the NR system designs the time-sequence relationship as shown in fig. 3, and gives an NR PDSCH/PUSCH scheduling/retransmission time sequence indication. As shown in fig. 3, a K0 value indicates a transmission slot offset between downlink scheduling and downlink data transmission, a K1 value indicates a transmission slot offset between downlink data transmission and feedback information, a K3 value indicates a transmission slot offset between feedback information and downlink data retransmission, and a K2 value indicates a transmission slot offset between uplink scheduling and uplink data transmission.

In one example, when data retransmission within multiple slots is combined with a flexible slot structure, it is desirable to determine which symbols and/or slots are capable of data retransmission in a certain way. If there are time slots that do not meet the data transmission requirements in a plurality of consecutive time slots, the repeated transmissions in those time slots that do not meet the data transmission requirements will be ignored.

As shown in fig. 4, a schematic diagram of a combination of data retransmission and flexible slot structure according to one embodiment of the present application is shown. In this example, the parameter pusch-aggregation factor=4, i.e., the number of repeated transmissions is 4. However, due to the configuration of the flexible slot structure, in the four consecutive slots shown in fig. 4, slot 1 and slot 2 are configured for downlink transmission, the actual number of repeated transmission is only 2, which does not meet the requirement of the parameter pusch-agmationfactor, and thus the ideal coverage enhancement effect cannot be achieved. For example, in the case of a DDDSU (in five consecutive slots, D represents a full downlink slot, U represents a full uplink slot, S represents a mixed uplink and downlink and guard slot) frame structure, if the configuration parameter pusch-aggregation factor is 4, only 1 effective uplink transmission can be actually performed in the consecutive 4 slots, and the configuration parameter pusch-aggregation factor does not play a role, so that the system coverage limitation of the TDD frame structure by the data repetition transmission in the related art is too large, and the deployment efficiency of TDD is affected.

Based on this, the embodiment of the application provides a retransmission method, which can be used for simultaneously performing retransmission of multiple redundancy versions, so as to improve coverage enhancement effect. The following description of the technical solution of the present application is presented in conjunction with several examples.

Referring to fig. 5, a flowchart of a retransmission method according to an embodiment of the present application is shown. The retransmission method may be applied to the terminal device 10 shown in fig. 1 and may also be applied to the network device 20 shown in fig. 1. The method comprises the following steps.

Step 510, determining n time slots for repeated transmissions.

The repeated transmission in the embodiment of the present application may be uplink repeated transmission, that is, the transmitting end is a terminal device, or downlink repeated transmission, that is, the transmitting end is a network device. Before the transmitting end performs the repeated transmission, n time slots for the repeated transmission need to be determined, where n is a positive integer. Optionally, the n slots for repeated transmission are consecutive n slots. In one example, the step 510 includes: based on the timing information and transmission repetition value of DCI (Downlink Control Information), n slots are determined.

The DCI refers to control information transmitted through a PDCCH (Physical Downlink Control Channel ), which may be used for uplink scheduling or downlink scheduling, which is not limited in the embodiment of the present application. As can be seen from the above description of the time domain resource allocation and the time sequence, the time sequence information of the DCI is used to indicate the transmission slot offset. A transmission repetition value (aggregation factor) is used to configure the number of slots of the plurality of slots for repeated transmission, optionally in the present embodiment, the transmission repetition value is equal to n. Since the DCI and the transmission repetition value are configured by the network device and transmitted to the terminal device, it is necessary to receive the DCI and the transmission repetition value transmitted by the network device and then determine n slots based on the timing information and the transmission repetition value of the DCI for the case that the transmitting end is the terminal device.

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

As can be seen from the above description, the timing information of the DCI is used to indicate the transmission slot offset, and the slot occupied by each repeated transmission can be determined by taking the slot indicated by the timing information of the DCI as the start and combining the configured transmission repetition values. Optionally, in the case that the DCI is used for downlink scheduling, the timing information of the DCI includes first timing information, where the first timing information is used to indicate a transmission slot offset of downlink transmission, that is, a transmission slot offset between a receiving slot of the DCI and a downlink transmission slot, and optionally, the first timing information is a K0 value in the description of the time domain resource allocation and the timing; in the case that the DCI is used for uplink scheduling, the timing information of the DCI includes second timing information, where the second timing information is used to indicate a transmission slot offset of uplink transmission, that is, a transmission slot offset between a reception slot of the DCI and an uplink transmission slot, and optionally the second timing information is a K2 value in the description of the time domain resource allocation and the timing.

In step 520, for the first slot of the n slots, the first RE in the first slot is partitioned based on the m RVs, to obtain k RE sets.

The first time slot comprises at least one of the n time slots, i.e. the first time slot may comprise one of the n time slots, or the first time slot may comprise a plurality of the n time slots, such as 2 time slots, 3 time slots, 4 time slots, etc. Optionally, in the case that the first time slot includes a plurality of time slots among the n time slots, the plurality of time slots included in the first time slot are consecutive time slots; or, the plurality of time slots included in the first time slot are discontinuous time slots, and whether the plurality of time slots included in the first time slot in the embodiment of the present application are continuous or not is not limited.

For a first time slot, in the embodiment of the present application, based on m RVs, a first RE in the first time slot is split to obtain k RE sets, where each RE set includes at least one first RE, m is a positive integer, and k is a positive integer. The m RVs refer to RVs for repeated transmission that are uniformly selected by the transmitting end and the receiving end. In this embodiment of the present application, the determining manner of the m RVs is not limited, and optionally, the m RVs are determined based on the first RE in the first slot, the transmission repetition value, and version indication information included in the DCI, where the version indication information is used to indicate an RV corresponding to an initial transmission in the repeated transmission. Optionally, the m RVs are determined by an algorithm, so that based on the algorithm, the m RVs may be obtained with the first RE in the first slot, the transmission repetition value, and 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 number of RVs (i.e., m) of the m RVs and/or RV Identifiers (IDs) of the m RVs.

The first RE refers to an RE that can be used for repeated transmission. Taking the example that the first slot includes one slot of n slots, as shown in fig. 6, a schematic diagram of a slot provided in an embodiment of the present application is shown, where the slot includes 14 symbols, where symbol 0 and symbol 11 are used for transmission of the pre-demodulation reference signal and the additional demodulation reference signal, respectively, and the remaining 12 symbols (i.e. symbol 1 to symbol 10 and symbol 12 to symbol 13) are available for retransmission. In combination with the 12 symbols and 12 subcarriers (1 RB (Resource Block)) occupied on the frequency domain, it may be determined that 144 REs are included in the first slot, that is, the number of first REs in the first slot is 144.

The first RE in the first slot is partitioned based on the RV for the retransmission, and k RE sets may be obtained. Because the data characteristics corresponding to different RVs are different (i.e. the number and positions of the data bits and the check bits contained in different RVs are different), the requirements of the data corresponding to different RVs on the transmission resources are also different, i.e. the requirements on REs are also different. In one example, in the process of dividing the first RE in the first slot to obtain k RE sets, a mapping relationship between m RVs and k RE sets may be determined simultaneously, based on this, dividing the first RE in the first slot based on the m RVs to obtain k RE sets includes: based on the RV quantity and RV identification of m RVs, dividing the first RE in the first time slot to obtain k RE sets and the mapping relation between the m RVs and the k RE sets. By considering the RV quantity and RV identifications of m RVs at the same time of dividing the first RE in the first time slot, the segmentation can be selectively carried out, and higher degree of agreement with specific RV identifications of m RVs is achieved. In another example, after dividing the first RE in the first slot to obtain k RE sets, determining a mapping relationship between m RVs and the k RE sets, based on the above dividing the first RE in the first slot based on the m RVs to obtain k RE sets, including: based on the RV quantity of m RVs, dividing the first RE in the first time slot to obtain k RE sets. Optionally, on this basis, the dividing the first RE in the first slot based on the RV number m of the m RVs to obtain k RE sets further includes: based on the RV identifications of the m RVs, the mapping relation between the m RVs and the k RE sets is determined.

The relation between m and k is not limited in the embodiment of the present application. In one example, where each RV of the simultaneous transmissions is transmitting only once, i.e., each RV is transmitting only once in the first time slot, m is equal to k such that for each RV one set of REs is split from the first REs in the first time slot for transmission of that RV. In another example, in the case where each RV that is transmitted simultaneously performs at least one transmission, that is, there is one or some RVs among m RVs that perform multiple transmissions in the first slot, k is greater than m, so that for each RV that performs one transmission in the first slot, one set of REs is split from the first REs in the first slot for the transmission of that RV; for each RV transmitting multiple times in a first time slot, a plurality of RE sets are partitioned from the first REs in the first time slot for transmission of the RV.

For other descriptions of the size relationships among the partitions RE, m and k, please refer to the description of the following method embodiments, which are not repeated here. It should be noted that, in the embodiment of the present application, only the first slot of the n slots is taken as an example to describe the division of the first RE in the first slot, and the division of the first RE in other slots may be the same as the division of the first RE in the first slot, that is, the division manner for the first RE in each of the n slots is the first division manner; alternatively, the division of the first RE in the other slots may be different from the division of the first RE in the first slot, that is, the n slots include the second slot, and the division manner for the first RE in the second slot is different from the division manner for the first RE in the first slot. Different RE division modes can be adopted by different time slots in the n time slots, so that the full and effective utilization of the flexible time slots can be realized, and the phenomenon that repeated transmission in the flexible time slots is ignored when the number of symbols available for data transmission in the flexible time slots is different from that of symbols available for data transmission in the full uplink time slots or the full downlink time slots is avoided.

Wherein the second time slot comprises at least one time slot other than the first time slot of the n time slots, i.e. the second time slot may comprise one time slot of the n time slots, or the second time slot may comprise a plurality of time slots of the n time slots, such as 2 time slots, 3 time slots, 4 time slots, etc. Optionally, in the case that the second time slot includes a plurality of time slots among the n time slots, the plurality of time slots included in the second time slot are consecutive time slots; or, the plurality of time slots included in the second time slot are discontinuous time slots, and whether the plurality of time slots included in the second time slot in the embodiment of the present application are continuous or not is not limited. Alternatively, the number of slots included in the second slot may be equal to the number of slots included in the first slot, or may not be equal to the number of slots included in the first slot, which is not limited in the embodiment of the present application.

In step 530, in the first timeslot, data corresponding to m RVs is transmitted based on k RE sets.

After the transmitting end divides the first RE in the first time slot, the encoded data can be rate-matched based on m RVs to determine the data corresponding to each RV in the m RVs, and the RE set corresponding to the RV is used for transmitting the data corresponding to the RV in the first time slot. Based on this, in one example, step 530 described above includes: determining coding parameters; coding the data to be transmitted according to the coding parameters to obtain a transmission code block; performing rate matching on the transmission code block based on m RVs to obtain data corresponding to the m RVs; based on k RE sets, data corresponding to m RVs are transmitted.

The coding parameters refer to parameters according to which data to be transmitted is coded. The embodiment of the application does not limit the specific content of the coding parameter, and optionally, the coding parameter includes a code rate and/or a size of a transmission code block. The specific determination manner of the encoding parameters is not limited in the embodiment of the present application. Several ways of determining the coding parameters are shown below.

In one example, the n time slots include a third time slot; the determining the coding parameters includes: based on the first RE in the third slot, a coding parameter is determined. Wherein the third time slot comprises at least one of the n time slots, i.e., the third time slot may comprise one of the n time slots, or the third time slot may comprise a plurality of the n time slots, such as 2 time slots, 3 time slots, 4 time slots, etc.; optionally, in the case that the third time slot includes a plurality of time slots among the n time slots, the plurality of time slots included in the third time slot are consecutive time slots; or, the plurality of time slots included in the third time slot are discontinuous time slots, and whether the plurality of time slots included in the third time slot are continuous or not is not limited in the embodiment of the present application; alternatively, the third time slot may be the first time slot, or may be at least one time slot other than the first time slot in the n time slots. In the embodiment of the present application, the coding parameter may be determined based on the first RE in one time slot or multiple time slots, alternatively, the coding parameter is determined based on the number of REs of the first RE in one time slot or multiple time slots.

In another example, determining the encoding parameters includes: based on a third RE set of the k RE sets, a coding parameter is determined. 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 of the n time slots. That is, in the embodiment of the present application, the coding parameter may be determined based on the RE set (the third RE set) containing the largest number of REs, and optionally, the coding parameter is determined based on the number of REs contained in the third RE set.

After determining the coding parameters, the transmitting end codes the data to be transmitted according to the coding parameters, thereby obtaining a transmission code block. Based on m RVs, the transmitting end may perform rate matching on the transmission code block obtained by encoding, so as to determine data corresponding to each RV. Optionally, the transmitting end may determine the bit size occupied by the transmitted data according to the RE and the modulation mode that may be used for data transmission, and further, the transmitting end determines the data corresponding to each RV from the encoded transmission code block based on m RVs and the bit size occupied by the transmitted data. And then, the transmitting end transmits data corresponding to m RVs based on k RE sets.

It should be noted that, the data corresponding to RV in the embodiment of the present application refers to a data segment corresponding to RV in a transmission code block obtained after encoding, and is not used to refer to a data bit in particular. It should be appreciated that the data corresponding to RV includes: the data bits and/or redundancy bits, i.e., the data corresponding to RV, include three cases: only data bits, only redundancy bits, both data bits and redundancy bits.

In one example, in the case where the number of slots transmitting data corresponding to m RVs satisfies the transmission repetition value, the repetition transmission is stopped.

In order to reduce the processing overhead and signaling overhead of the transmitting end, in the embodiment of the present application, when the number of timeslots for repeated transmission by the transmitting end meets the transmission repetition value, the repeated transmission may be stopped, so as to avoid wasting transmission resources. It should be noted that, in the embodiment of the present application, based on the compatibility with the original data retransmission, for example, the compatibility with the transmission repetition value, the transmission of multiple RVs is designed to be performed simultaneously, that is, the transmission of multiple RVs is performed in the same time slot, so as to achieve more repeated transmission times and improve the coverage enhancement effect. Therefore, the number of slots indicated by the transmission repetition value is still the number of slots of the repeated transmission, and the transmitting end stops the repeated transmission when the number of slots of the repeated transmission satisfies the transmission repetition value.

In one example, the above further comprises: demodulating the data corresponding to the m RVs to obtain a data demodulation result corresponding to the first time slot; combining data demodulation results corresponding to w time slots respectively to obtain combined data, wherein w is a positive integer smaller than or equal to n; and decoding the combined data.

When receiving data corresponding to m RVs transmitted by a transmitting end in a first time slot, a receiving end divides a first RE in the first time slot according to the method of determining a mapping relation between the first RE and the m RVs in the first time slot by the transmitting end, so as to obtain k RE sets, and determines RVs corresponding to each RE set, so that the receiving end can demodulate the data corresponding to m RVs transmitted in the first time slot according to the information, and a demodulation result is obtained. After demodulation, the receiving end needs to combine the demodulation results, such as IR (Incremental Redundancy ) combining the soft bits of the demodulation results, to obtain combined data. In the embodiment of the application, the number of the corresponding time slots is not limited when the receiving end performs the combination processing, and optionally, the receiving end combines the demodulation result corresponding to one time slot; or the receiving end combines demodulation results corresponding to the time slots. And finally, the receiving end carries out decoding processing on the combined data.

In one example, the method further comprises: based on the time sequence information of DCI and the time slot when the repeated transmission is stopped, obtaining a feedback time slot; and transmitting feedback information in the feedback time slot, wherein the feedback information is used for indicating the data receiving condition.

After the transmitting end stops repeating transmission, the receiving end can determine a feedback time slot and transmit feedback information to the transmitting end in the feedback time slot so as to indicate the data receiving condition to the transmitting end. Optionally, the feedback information includes an ACK or NACK. In the case that the repeated transmission is uplink repeated transmission, the sending end is a terminal device, and the receiving end is a network device; in the case that the repeated transmission is downlink repeated transmission, the transmitting end is network equipment, and the receiving end is terminal equipment.

In the 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 repeating transmission. Optionally, 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, that is, a transmission slot offset between the downlink data transmission and the feedback information, and optionally, the third timing information includes the K1 value described above. Optionally, the feedback slot is a sum of a slot when the transmitting end stops repeating the transmission and a transmission slot offset indicated by the third timing information.

In summary, according to the technical scheme provided by the embodiment of the application, the sending end partitions REs available for repeated transmission in a time slot, and simultaneously transmits data corresponding to multiple redundancy versions based on the partitioned REs, so that the transmission of the data corresponding to the multiple redundancy versions in one time slot is realized. Compared with the case that only data corresponding to one redundancy version is transmitted in one time slot, the embodiment of the application realizes that the actual repeated transmission times are increased as much as possible under the configuration of limited transmission repeated values, effectively avoids the situation that the ideal coverage enhancement effect cannot be realized because the number of the time slots of the actual repeated transmission does not reach the transmission repeated values, solves the problem of coverage limitation, and ensures the effective repeated transmission between the terminal equipment and the network equipment. In addition, in the embodiment of the application, REs which can be used for repeated transmission in a time slot are segmented, on one hand, the segmented REs can be ensured to effectively transmit data corresponding to redundancy versions, and the effectiveness of repeated transmission is improved; on the other hand, the method is compatible with the original RE design in the time slot, and improves the compatibility and adaptability of repeated transmission.

Next, the segmentation of RE, the size relationship between m and k, and the like will be described.

First, a description is given of the size relationship between m and k.

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

As can be seen from the above description, m is equal to k in the case where each RV performs transmission only once in the first slot. Based on this, there is a one-to-one correspondence between m RVs and k RE sets, i.e., each RE set of the k RE sets after segmentation corresponds to one RV, and different RE sets correspond to different RVs.

Taking the example that the first time slot includes one time slot of n time slots as shown in fig. 7, a resource partition diagram provided in an embodiment of the present application is shown. Assume that: the first time slot is time slot n, the number of RV versions is 4, and the RV versions are respectively ₀ 、RV ₁ 、RV ₂ And RV (r) ₃ . Then 4 RE sets are obtained after the first RE in the time slot n is segmented, and each RV corresponds to 1 RE set respectively.

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

As can be seen from the above description, k is greater than m in the case where there are RVs among m RVs that transmit at least twice in the first slot. Based on this, the RV performing the multiple transmission among the m RVs corresponds to a plurality of RE sets, and the RV performing one transmission corresponds to one RE set.

Taking the first time slot as an example, which includes one of n time slots, as shown in FIG. 8A resource partitioning schematic provided by another embodiment of the present application is shown. Assume that: the first time slot is time slot n, the number of RV versions is 4, and the RV versions are respectively ₀ 、RV ₁ 、RV ₂ And RV (r) ₃ And RV (r) ₀ Carry out two transmissions, RV ₁ 、RV ₂ And RV (r) ₃ And respectively carrying out one transmission. Then the first RE in the time slot n is segmented to obtain 5 RE sets, RV ₀ Corresponding to 2 RE sets, RV ₁ 、RV ₂ And RV (r) ₃ Corresponding to 1 RE set, respectively.

Next, description is given of the number of REs included in k RE sets obtained by dividing REs.

In one example, each of the k RE sets includes a first number of REs.

If the first RE in the first slot is uniformly segmented, the number of REs included in each RE set in the k segmented RE sets is equal, that is, the number of REs is the first number of REs.

Taking the example that the first time slot includes one time slot of n time slots as shown in fig. 7, a resource partition diagram provided in an embodiment of the present application is shown. Assume 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 the first RE in the first time slot is segmented. 144 REs are total in the first time slot, and the number of REs contained in each of the 4 RE sets is equal to 36.

In another example, a first set of k RE sets contains a different number of REs than a second set of k RE sets.

If the first RE in the first slot is unevenly segmented, at least two RE sets in the k RE sets obtained by segmentation have unequal numbers of REs contained in the at least two RE sets, for example, the first RE set in the k RE sets has unequal numbers of REs contained in the at least two RE sets and the second RE set in the k RE sets has unequal numbers of REs. Optionally, if other RE sets exist in the k RE sets, such as a 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, or may be different from the number of REs included in the first RE set and the number of REs included in the second RE set.

Taking the example that the first time slot includes one time slot of n time slots as shown in fig. 9, a resource partition diagram provided in yet another embodiment of the present application is shown. Assume 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 the first RE in the first time slot is segmented. 144 REs are total in the first time slot, and the number of REs contained in the 4 RE sets is as follows: 84. 24, 12.

Again, description is given of subcarriers occupied by k RE sets obtained by dividing REs.

In one example, subcarriers occupied by each of the k sets of REs are contiguous.

Among k RE sets obtained by dividing the first RE in the first slot, there may be a case that one or some RE sets occupy multiple subcarriers, and optionally, multiple subcarriers occupied by the RE sets occupying multiple subcarriers are consecutive subcarriers.

Taking the example that the first time slot includes one time slot of n time slots as shown in fig. 7, a resource partition diagram provided in an embodiment of the present application is shown. Assume 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 the first RE in the first time slot is segmented. As shown in fig. 7, each of the 4 RE sets occupies a plurality of subcarriers, and the subcarriers occupied by each RE set are consecutive.

In another example, there is a discontinuity in subcarriers occupied by at least one RE set among the k RE sets.

Among k RE sets obtained after the first RE in the first slot is segmented, there may be a case that one or some RE sets occupy multiple subcarriers, optionally, at least one RE set occupies a discontinuous subcarrier in the RE sets occupying multiple subcarriers. That is, the RE sets occupying multiple subcarriers each occupy a non-contiguous subcarrier; or, part of RE sets occupying a plurality of sub-carriers occupy continuous sub-carriers, and part of RE sets occupy discontinuous sub-carriers.

Taking the example that the first time slot includes one time slot of n time slots as shown in fig. 10, a schematic diagram of resource partitioning provided in a further embodiment of the present application is shown. Assume 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 the first RE in the first time slot is segmented. As shown in fig. 10, each of the 4 RE sets occupies a plurality of subcarriers, and the subcarriers occupied by each RE set are discontinuous.

Both examples above discuss the status of the subcarriers occupied by the RE sets from the perspective of the RE sets, and the RE sets corresponding to the subcarriers are discussed below from the perspective of the subcarriers.

In one example, the subcarriers occupied by each of at least two of the k sets of REs comprise a first subcarrier.

The first RE in the first slot occupies at least one subcarrier, and for a first subcarrier in the at least one subcarrier, the first subcarrier may correspond to one set of REs, that is, subcarriers occupied by multiple sets of REs do not have overlapping subcarriers; alternatively, the first subcarrier may also correspond to a plurality of RE sets, that is, the same subcarrier exists among subcarriers occupied by at least two RE sets in the plurality of RE sets.

Taking the example that the first time slot includes one time slot of n time slots as shown in fig. 11, a resource partition diagram provided in a further embodiment of the present application is shown. Assume 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 the first RE in the first time slot is segmented. As shown in fig. 11, two RE sets of the 4 RE sets occupy 9 subcarriers, respectively, and the occupied subcarriers are the same; the other two RE sets occupy 3 sub-carriers respectively, and the occupied sub-carriers are the same.

Finally, a segmentation method for segmenting REs is described.

In one example, the step 520 includes: determining a segmentation pattern based on a first RE in a first time slot and version indication information included in DCI, wherein the version indication information is used for indicating RV corresponding to initial transmission in repeated transmission; and dividing the first RE in the first time slot according to the division pattern to obtain k RE sets.

For some simple ways of splitting the first RE, for example, splitting the first RE uniformly, the first RE may be split directly after the terminal device and the network device define the same splitting way; however, for some complex ways of splitting the first RE, for example, in the case that the first RE is split unevenly and one subcarrier corresponds to a plurality of RE sets, if the terminal device and the network device are just explicitly identical splitting ways, situations such as inconsistent splitting results on two sides may also occur, so in this case, the same splitting pattern may be explicitly determined on the terminal device and the network device, so that the splitting of the first RE is performed based on the splitting pattern, thereby ensuring that the splitting results obtained on the terminal device and the network device side are identical. Of course, the first RE may be divided based on the division pattern in a simple manner, which is not limited in the embodiment of the present application.

Optionally, the segmentation pattern is determined based on the first RE in the first slot and an RV corresponding to an initial transmission in the repeated transmissions indicated by the DCI. In this embodiment, the DCI includes version indication information, where the version indication information is used to indicate an RV corresponding to an initial transmission in repeated transmission. Optionally, on the basis of determining the segmentation pattern based on the first RE and the version indication information in the first time slot, the segmentation pattern may be further determined in combination with the repeated transmission index indication, that is, the segmentation pattern is determined based on the first RE in the first time slot, the repeated transmission index indication, and the version indication information included in the DCI, so that different RE segmentation manners in different time slots may be implemented. The index indication of the repeated transmission may be a slot index indication, so as to indicate which time slot the first time slot is the repeated transmission; alternatively, the index indication of the repeated transmission may be an aggregate index indication, so as to indicate the number of transmissions of the data corresponding to the RV mapped by the RE aggregate, and the specific form of the index indication of the repeated transmission in the embodiment of the present application is not limited.

Optionally, the segmentation pattern is determined by an algorithm; alternatively, the embodiments of the present application are not limited in this regard, as predefined by the communication protocol. In the case that the segmentation pattern is determined by an algorithm, based on the algorithm, version indication information included in the first RE and DCI in the first slot is taken as input, optionally, an index indication of repeated transmission may be further combined as input, so that the segmentation pattern may be obtained. Alternatively, the segmentation pattern may be determined by the same algorithm as the m RVs, or may be determined by a different algorithm from the m RVs, which is not limited in the embodiment of the present application. For example, as shown in fig. 11, a resource partitioning diagram provided in an embodiment of the present application is shown, where the resource partitioning diagram may be used as a partitioning pattern.

In summary, according to the technical solution provided in the embodiments of the present application, for a plurality of RE sets obtained by performing RE segmentation, the number of REs included in each RE set may be the same or different; the subcarriers corresponding to each RE set can be continuous or discontinuous; one subcarrier can correspond to one RE set or a plurality of RE sets, so that the resource of repeated transmission is flexibly divided, the requirements of different configurations on the transmission resource can be effectively met, and the effectiveness and reliability of repeated transmission are improved.

The following are device embodiments of the present application, which may be used to perform 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.

Referring to fig. 12, a block diagram of a retransmission apparatus according to an embodiment of the present application is shown. The apparatus has a function of implementing the above-described repeat transmission method example. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The device can be the terminal equipment introduced above, or can be arranged in the terminal equipment; alternatively, the apparatus may be the network device described above, or may be provided in the network device. As shown in fig. 12, the apparatus 1200 may include: a slot determination module 1210, a resource partitioning module 1220, and a data transmission module 1230.

The timeslot determination module 1210 is configured to determine n timeslots used for repeated transmission, where n is a positive integer.

A resource partitioning module 1220, configured to partition, for a first slot of the n slots, a first RE in the first slot based on m RVs, to obtain k RE sets, where m is a positive integer, and k is a positive integer; wherein the first time slot includes at least one time slot of the n time slots.

And a data transmission module 1230, configured to transmit, in the first timeslot, 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 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 of the k RE sets.

In one example, each of the k RE sets includes a first number of REs.

In one example, a first set of the k sets of REs contains a different number of REs than a second set of the k sets of REs.

In one example, there is a subcarrier discontinuity occupied by at least one RE set in the k RE sets.

In one example, the subcarriers occupied by each of at least two of the k sets of REs include a first subcarrier.

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

In one example, determining the segmentation pattern based on the version indication information included in the first RE and the DCI in the first slot includes: the segmentation pattern is determined based on the first RE in the first slot, the index indication of the repeated transmission, and the version indication information.

In one example, the repeatedly transmitted index indication includes a slot index indication; alternatively, the repeatedly transmitted index indication comprises a set index indication.

In one example, the partitioning scheme for the first RE within each of the n slots is a first partitioning scheme.

In one example, the n time slots include a second time slot, the second time slot including at least one time slot of the n time slots other than the first time slot; the partitioning method for the first RE in the second slot is different from the partitioning method for the first RE in the first slot.

In one example, the timeslot determination module 1210 is configured to: and determining the n time slots based on the time sequence information of the DCI and the transmission repetition value, wherein the time sequence information of the DCI is used for indicating the offset of the transmission time slot.

In one example, the timeslot determination module 1210 is configured to: and starting with a time slot indicated by the time sequence information of the DCI, determining a time slot indicated by the transmission repetition value and used for repeated transmission, and obtaining the n time slots.

In one example, the timing information of the DCI includes first timing information and/or second timing information; the first time sequence information is used for indicating the transmission time slot offset of uplink transmission, and the second time sequence information is used for indicating the transmission time slot offset of downlink transmission.

In one example, as shown in fig. 13, the apparatus 1200 further includes: a version determining module 1290, configured to determine the m RVs based on the first RE in the first slot, a transmission repetition value, and version indication information included in DCI, where the version indication information is used to indicate an RV corresponding to an initial transmission in the repeated transmissions.

In one example, the resource partitioning module 1220 is configured to: and dividing the first RE in the first time slot based on the RV quantity of the m RVs to obtain the k RE sets.

In one example, the resource partitioning module 1220 is further configured to: and determining the mapping relation between the m RVs and the k RE sets based on RV identifiers of the m RVs.

In one example, the resource partitioning module 1220 is configured to: and dividing the first RE in the first time slot based on the RV quantity and RV identification of the m RVs to obtain the k RE sets and the mapping relation between the m RVs and the k RE sets.

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

In one example, a third time slot is included in the n time slots, the third time slot including at least one time slot of the n time slots; the parameter determining unit 1231 is configured to: the coding parameters are determined based on the first RE in the third slot.

In one example, the parameter determining unit 1231 is configured to: determining the coding parameters based on a third RE set of 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 of the n time slots.

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

In one example, the repeated transmission is stopped in case the number of slots in which the data corresponding to the m RVs is transmitted satisfies a transmission repetition value.

In one example, as shown in fig. 13, the apparatus 1200 further includes: a data demodulation module 1240, configured to demodulate data corresponding to the m RVs, to obtain a data demodulation result corresponding to the first timeslot; the data combining module 1250 is configured to combine data demodulation results corresponding to w time slots respectively to obtain combined data, where w is a positive integer less than or equal to n; a decoding processing module 1260, configured to perform decoding processing on the combined data.

In one example, as shown in fig. 13, the apparatus 1200 further includes: a time slot calculating module 1270, 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; and a feedback transmission module 1280, configured to transmit feedback information in the feedback slot, where the feedback information is used to indicate a data receiving condition.

In one example, the timing information of the DCI includes third timing information indicating a transmission slot offset of the feedback information.

In summary, according to the technical scheme provided by the embodiment of the application, the sending end partitions REs available for repeated transmission in a time slot, and simultaneously transmits data corresponding to multiple redundancy versions based on the partitioned REs, so that the transmission of the data corresponding to the multiple redundancy versions in one time slot is realized. Compared with the case that only data corresponding to one redundancy version is transmitted in one time slot, the embodiment of the application realizes that the actual repeated transmission times are increased as much as possible under the configuration of limited transmission repeated values, effectively avoids the situation that the ideal coverage enhancement effect cannot be realized because the number of the time slots of the actual repeated transmission does not reach the transmission repeated values, solves the problem of coverage limitation, and ensures the effective repeated transmission between the terminal equipment and the network equipment. In addition, in the embodiment of the application, REs which can be used for repeated transmission in a time slot are segmented, so that on one hand, the segmented REs can effectively transmit data corresponding to redundancy versions, and the effectiveness of repeated transmission is improved; on the other hand, the method is compatible with the original RE design in the time slot, and improves the compatibility and adaptability of repeated transmission.

It should be noted that, when the apparatus provided in the foregoing embodiment performs the functions thereof, only the division of the respective functional modules is used as an example, in practical application, the foregoing functional allocation may be performed by different functional modules according to actual needs, that is, the content structure of the device is divided into different functional modules, so as to perform all or part of the functions described above.

The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.

Referring to fig. 14, a schematic structural diagram of an apparatus 140 according to an embodiment of the present application is shown, for example, the apparatus may be used to perform the above-mentioned retransmission method. Optionally, the device is a terminal device; alternatively, the device is a network device. Specifically, the device 140 may include: a processor 141, and a transceiver 142 coupled to the processor 141; wherein:

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

The transceiver 142 includes a receiver and a transmitter. Alternatively, the transceiver 142 is a communication chip.

In one example, the device 140 further comprises: memory and bus. The memory is connected to the processor through a bus. The memory may be used to store a computer program, and the processor is used to execute the computer program to implement the steps in the above-described method embodiments.

Further, the memory may be implemented by any type of volatile or nonvolatile memory device, including but not limited to: RAM (Random-Access Memory) and ROM (Read-Only Memory), EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash Memory or other solid state Memory technology, CD-ROM (Compact Disc Read-Only Memory), DVD (Digital Video Disc, high density digital video disc) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices. Wherein:

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 segment, for a first timeslot of the n timeslots, a first RE in the first timeslot based on m RVs to obtain k RE sets, where m is a positive integer, and k is a positive integer; wherein the first time slot includes at least one time slot of the n time slots.

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

In one example, each of the k RE sets includes a first number of REs.

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

In one example, the processor 141 is configured to: and determining the n time slots based on the time sequence information of the DCI and the transmission repetition value, wherein the time sequence information of the DCI is used for indicating the offset of the transmission time slot.

In one example, the processor 141 is configured to: and starting with a time slot indicated by the time sequence information of the DCI, determining a time slot indicated by the transmission repetition value and used for repeated transmission, and obtaining the n time slots.

In one example, the processor 141 is configured to: and determining the m RVs based on the first RE in the first time slot, the transmission repetition value and 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.

In one example, the processor 141 is configured to: and dividing the first RE in the first time slot based on the RV quantity of the m RVs to obtain the k RE sets.

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

In one example, the processor 141 is configured to: and dividing the first RE in the first time slot based on the RV quantity and RV identification of the m RVs to obtain the k RE sets and the mapping relation between the m RVs and the k RE sets.

In one example, the processor 141 is further configured to: determining coding parameters; coding the data to be transmitted according to the coding parameters to obtain a transmission code block; based on the m RVs, carrying out rate matching on the transmission code blocks 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 one example, a third time slot is included in the n time slots, the third time slot including at least one time slot of the n time slots; the processor 141 is further configured to: the coding parameters are determined based on the first RE in the third slot.

In one example, the processor 141 is further configured to: determining the coding parameters based on a third RE set of 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 of the n time slots.

In one example, the processor 141 is further configured to: demodulating the data corresponding to the m RVs to obtain a data demodulation result corresponding to the first time slot; combining data demodulation results corresponding to w time slots respectively to obtain combined data, wherein w is a positive integer smaller than or equal to n; and decoding the combined data.

In one example, the processor 141 is further configured to: based on the time sequence information of DCI and the time slot when the repeated transmission is stopped, obtaining a feedback time slot; the transceiver 142 is further configured to: and transmitting feedback information in the feedback time slot, wherein the feedback information is used for indicating the data receiving condition.

Embodiments of the present application also provide a computer readable storage medium having stored therein a computer program for execution by a processor of a device to implement a retransmission method as described above.

The embodiment of the application also provides a chip, which comprises a programmable logic circuit and/or program instructions and is used for realizing the repeated transmission method when the chip runs on equipment.

Embodiments of the present application also provide a computer program product for implementing a retransmission method as described above when the computer program product is run on a device.

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

The foregoing description of the exemplary embodiments of the present application is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, alternatives, and alternatives falling within the spirit and scope of the invention.

Claims

A method of repeating transmissions, the method comprising:

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

dividing a first resource element RE in a first time slot of the n time slots based on m redundancy versions RV to obtain k RE sets, wherein m is a positive integer, and k is a positive integer; wherein the first time slot includes at least one time slot of the n time slots;

and transmitting data corresponding to the m RVs based on the k RE sets in the first time slot.
The method of claim 1, wherein m is equal to k and the m RVs are in one-to-one correspondence with the k RE sets.
The method of claim 1, wherein m is less than k, and a first RV of the m RVs corresponds to at least two of the k RE sets.
A method according to any one of claims 1 to 3, wherein each of the k RE sets comprises a first number of REs.
A method according to any of claims 1-3, characterized in that the number of REs comprised by a first one of the k sets of REs is different from the number of REs comprised by a second one of the k sets of REs.
The method according to any of claims 1 to 5, wherein subcarriers occupied by each of the k sets of REs are contiguous.
The method according to any one of claims 1 to 5, wherein at least one subcarrier discontinuity occupied by one RE set exists in the k RE sets.
The method according to any of claims 1 to 7, wherein the subcarriers occupied by each of at least two of the k sets of REs comprise a first subcarrier.
The method according to any one of claims 1 to 8, wherein the partitioning the first REs in the first slot based on m redundancy versions RV for the repeated transmission to obtain k RE sets includes:

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

And dividing the first RE in the first time slot according to the division pattern to obtain the k RE sets.
The method according to any of claims 1 to 9, wherein the partitioning for the first RE within each of the n slots is a first partitioning.
The method according to any of claims 1 to 9, wherein the n time slots comprise a second time slot comprising at least one of the n time slots other than the first time slot; the partitioning method for the first RE in the second slot is different from the partitioning method for the first RE in the first slot.
The method according to any of claims 1 to 11, wherein said determining n time slots for repeated transmissions comprises:

and determining the n time slots based on the time sequence information and the transmission repetition value of downlink control information DCI, wherein the time sequence information of the DCI is used for indicating the offset of the transmission time slot.
The method of claim 12, wherein the determining the n slots based on the DCI timing information and a transmission repetition value comprises:

and starting with a time slot indicated by the time sequence information of the DCI, determining a time slot indicated by the transmission repetition value and used for repeated transmission, and obtaining 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 time sequence information is used for indicating the transmission time slot offset of uplink transmission, and the second time sequence information is used for indicating the transmission time slot offset of downlink transmission.
The method according to any one of claims 1 to 14, further comprising:

and determining the m RVs based on the first RE in the first time slot, the transmission repetition value and 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 method of any of claims 1-15, wherein the partitioning the first REs in the first time slot based on the m RVs to obtain k RE sets comprises:

and dividing the first RE in the first time slot based on the RV quantity of the m RVs to obtain the k RE sets.
The method of claim 16, wherein the partitioning the first REs in the first time slot based on the number m of RVs of the m RVs, resulting in the k RE sets, further comprises:

And determining the mapping relation between the m RVs and the k RE sets based on RV identifiers of the m RVs.
The method of any of claims 1-15, wherein the partitioning the first REs in the first time slot based on the m RVs to obtain k RE sets comprises:

and dividing the first RE in the first time slot based on the RV quantity and RV identification of the m RVs to obtain the k RE sets and the mapping relation between the m RVs and the k RE sets.
The method of any of claims 1-18, wherein the transmitting the data corresponding to the m RVs based on the k RE sets comprises:

determining coding parameters;

coding the data to be transmitted according to the coding parameters to obtain a transmission code block;

based on the m RVs, carrying out rate matching on the transmission code blocks to obtain data corresponding to the m RVs;

and transmitting the data corresponding to the m RVs based on the k RE sets.
The method of claim 19, wherein a third time slot is included in the n time slots, the third time slot including at least one of the n time slots;

the determining the coding parameters includes:

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

determining the coding parameters based on a third RE set of 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 of the n time slots.
The method according to any of the claims 19 to 21, wherein the coding parameters comprise a code rate and/or a size of the transport block.
The method of any one of claims 1 to 22, wherein the repeated transmission is stopped in case the number of time slots in which the data corresponding to the m RVs is transmitted satisfies a transmission repetition value.
The method according to any one of claims 1 to 23, wherein after said determining n time slots for repeated transmission, further comprising:

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

combining data demodulation results corresponding to w time slots respectively to obtain combined data, wherein w is a positive integer smaller than or equal to n;

And decoding the combined data.
The method of claim 24, wherein the method further comprises:

based on the time sequence information of DCI and the time slot when the repeated transmission is stopped, obtaining a feedback time slot;

and transmitting feedback information in the feedback time slot, wherein the feedback information is used for indicating the data receiving condition.
The method of claim 25, wherein the timing information of the DCI includes third timing information indicating a transmission slot offset of the feedback information.
The method according to any of claims 1 to 26, characterized in that the method is applied in a terminal device; alternatively, the method is applied to the network equipment.
A retransmission apparatus, the apparatus comprising:

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

the resource segmentation module is used for segmenting a first resource element RE in a first time slot based on m redundancy versions RV aiming at the first time slot in the n time slots to obtain k RE sets, wherein m is a positive integer, and k is a positive integer; wherein the first time slot includes at least one time slot of the n time slots;

And the data transmission module is used for transmitting the data corresponding to the m RVs based on the k RE sets in the first time slot.
The apparatus of claim 28, wherein m is equal to k and the m RVs are in one-to-one correspondence with the k RE sets.
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 of the k sets of REs.
The apparatus of any one of claims 28 to 30, wherein each of the k RE sets includes a first number of REs.
The apparatus of any of claims 28-30, wherein a first set of REs of the k sets of REs comprises a different number of REs than a second set of REs of the k sets of REs.
The apparatus of any of claims 28-32, wherein subcarriers occupied by respective ones of the k sets of REs are contiguous.
The apparatus according to any of claims 28-32, wherein there is a discontinuity in subcarriers occupied by at least one of the k sets of REs.
The apparatus of any one of claims 28 to 34, wherein subcarriers occupied by each of at least two of the k sets of REs comprise a first subcarrier.
The apparatus according to any one of claims 27 to 35, wherein the resource partitioning module is configured to:

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

and dividing the first RE in the first time slot according to the division pattern to obtain the k RE sets.
The apparatus according to any of claims 28-36, wherein the partitioning for the first RE within each of the n slots is a first partitioning.
The apparatus of any one of claims 28 to 36, wherein the n time slots comprise a second time slot comprising at least one of the n time slots other than the first time slot; the partitioning method for the first RE in the second slot is different from the partitioning method for the first RE in the first slot.
The apparatus of any one of claims 28 to 38, wherein the slot determination module is configured to:

and determining the n time slots based on the time sequence information and the transmission repetition value of downlink control information DCI, wherein the time sequence information of the DCI is used for indicating the offset of the transmission time slot.
The apparatus of claim 39, wherein the slot determination module is configured to:

and starting with a time slot indicated by the time sequence information of the DCI, determining a time slot indicated by the transmission repetition value and used for repeated transmission, and obtaining the n time slots.
The apparatus of claim 39 or 40, wherein the timing information of the DCI includes first timing information and/or second timing information;

the first time sequence information is used for indicating the transmission time slot offset of uplink transmission, and the second time sequence information is used for indicating the transmission time slot offset of downlink transmission.
The apparatus of any one of claims 28 to 41, further comprising:

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

and dividing the first RE in the first time slot based on the RV quantity of the m RVs to obtain the k RE sets.
The apparatus of claim 43, wherein the resource partitioning module is further configured to:

and determining the mapping relation between the m RVs and the k RE sets based on RV identifiers of the m RVs.
The apparatus of any one of claims 28 to 42, wherein the resource partitioning module is configured to:

and dividing the first RE in the first time slot based on the RV quantity and RV identification of the m RVs to obtain the k RE sets and the mapping relation between the m RVs and the k RE sets.
The apparatus of any one of claims 28 to 45, wherein the data transmission module comprises:

a parameter determination unit for determining a coding parameter;

the data coding unit is used for coding the data to be transmitted according to the coding parameters to obtain a transmission code block;

the rate matching unit is used for performing rate matching on the transmission code block based on the m RVs to obtain data corresponding to the m RVs;

And the data transmission unit is used for transmitting the data corresponding to the m RVs based on the k RE sets.
The apparatus of claim 46, wherein a third time slot is included in the n time slots, the third time slot including at least one of the n time slots;

the parameter determining unit is used for:

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

determining the coding parameters based on a third RE set of 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 of the n time slots.
The apparatus according to any of claims 46 to 48, wherein the coding parameters comprise a code rate and/or a size of the transport block.
The apparatus of any one of claims 28-49, wherein the retransmission is stopped if a number of slots in which data corresponding to the m RVs is transmitted satisfies a transmission repetition value.
The apparatus of any one of claims 28 to 50, further comprising:

the data demodulation module is used for demodulating the data corresponding to the m RVs to obtain a data demodulation result corresponding to the first time slot;

the data combining module is used for combining data demodulation results corresponding to w time slots respectively to obtain combined data, wherein w is a positive integer smaller than or equal to n;

and the decoding processing module is used for decoding the combined data.
The apparatus of claim 51, wherein the apparatus further comprises:

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

and the feedback transmission module is used for transmitting feedback information in the feedback time slot, wherein the feedback information is used for indicating the data receiving condition.
The apparatus of claim 52, wherein the timing information of the DCI includes third timing information indicating a transmission slot offset of the feedback information.
The apparatus according to any one of claims 28 to 52, characterized in that the apparatus is provided in a terminal device; alternatively, the apparatus is provided in a network device.
An apparatus, the apparatus comprising: a processor, and a transceiver coupled to the processor; wherein:

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

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

and 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 of claim 55, wherein the device is a terminal device; alternatively, the device is a network device.
A computer readable storage medium, characterized in that the storage medium has stored therein a computer program for execution by a processor of a device for implementing the retransmission method according to any one of claims 1 to 27.
The computer-readable storage medium of claim 57, wherein the device is a terminal device; alternatively, the device is a network device.