Repeated transmission method, device and readable storage medium

Abstract

An embodiment of the present application provides a repeated transmission method, device and readable storage medium, wherein the method processes the OFDM symbols included in N time slots according to the transmission parameters corresponding to the N time slots, wherein the above-mentioned N time slots correspond to the same transmission block TB or the same control information or the same signal; since the transmission parameters corresponding to the N time slots are not completely the same, the flexibility of the repeated transmission is improved, and the system efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a repeated transmission method, device and readable storage medium. Background Art

[0002] With the continuous evolution of wireless communication technology, the Internet of Things (IoT) technology has developed rapidly. The Internet of Things plays a huge role in smart homes, smart cities, smart factories, remote monitoring, smart transportation and other aspects of people's production and life. In order to ensure the communication performance of IoT terminals and reduce the cost of IoT terminals, people have proposed an effective coverage enhancement solution, that is, to use multiple time slots to repeatedly transmit data. Among them, the specific transmission parameters of the repeated transmission process are determined by the high-level configuration. For example, the transmission parameters such as pilot configuration, transmission power, time-frequency domain resources, etc. in repeated transmission can be determined by the high-level configuration.

[0003] At present, how to make repeated transmission adapt to the more flexible 5G network, so as to improve the performance of repeated transmission and system efficiency, is an urgent problem to be solved. Summary of the invention

[0004] The embodiments of the present application provide a repeated transmission method, an apparatus, and a readable storage medium to improve the flexibility of repeated transmission, thereby improving the performance of repeated transmission and system efficiency.

[0005] In a first aspect, an embodiment of the present application provides a repeated transmission method, the method comprising: a terminal device processes the OFDM symbols of the N time slots according to the transmission parameters corresponding to the N time slots, respectively, wherein the transmission parameters corresponding to the N time slots are not completely the same, the N time slots correspond to the same transmission block TB or the same control information or the same signal, and N is an integer greater than 1.

[0006] In a second aspect, an embodiment of the present application provides a repeated transmission method, the method comprising: a network device processes the OFDM symbols of the N time slots according to the transmission parameters corresponding to the N time slots, wherein the transmission parameters corresponding to the N time slots are not completely the same, the N time slots correspond to the same transmission block TB or the same control information or the same signal, and N is an integer greater than 1.

[0007] In the third aspect, an embodiment of the present application provides a terminal device, comprising: a processing module, used to process the OFDM symbols of the N time slots according to the transmission parameters corresponding to the N time slots, wherein the transmission parameters corresponding to the N time slots are not completely the same, and the N time slots correspond to the same transmission block TB or the same control information or the same signal, and N is an integer greater than 1.

[0008] In a fourth aspect, an embodiment of the present application provides a network device, comprising: a processing module, used to process the OFDM symbols of the N time slots according to the transmission parameters corresponding to the N time slots, respectively, wherein the transmission parameters corresponding to the N time slots are not completely the same, and the N time slots correspond to the same transmission block TB or the same control information or the same signal, and N is an integer greater than 1.

[0009] In a fifth aspect, an embodiment of the present application provides an electronic device, including: a processor, a memory, and an interface for communicating with a network device;

[0010] The memory stores computer-executable instructions;

[0011] The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method described in any one of the first aspects.

[0012] In a sixth aspect, an embodiment of the present application provides an electronic device, including: a processor, a memory, and an interface for communicating with a terminal device;

[0013] The memory stores computer-executable instructions;

[0014] The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method described in any one of the first aspects.

[0015] In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the method described in any one of the first aspects.

[0016] In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the method described in any one of the second aspects.

[0017] In a ninth aspect, an embodiment of the present application provides a computer program product, including: program instructions, the program instructions are used to implement the method described in any one of the first aspects above.

[0018] In a tenth aspect, an embodiment of the present application provides a computer program product, including: program instructions, the program instructions are used to implement the method described in any one of the second aspects above.

[0019] In the eleventh aspect, an embodiment of the present application provides a program, which, when executed by a processor, is used to execute the method described in any one of the first aspects above.

[0020] In the twelfth aspect, an embodiment of the present application provides a program, which, when executed by a processor, is used to execute the method described in any one of the second aspects above.

[0021] In the thirteenth aspect, the embodiment of the present application may also provide a chip, including: a processing module and a communication interface, and the processing module can execute any method described in the first aspect above.

[0022] Furthermore, the chip also includes a storage module (such as a memory), the storage module is used to store instructions, the processing module is used to execute the instructions stored in the storage module, and the execution of the instructions stored in the storage module enables the chip to execute any method described in the first aspect.

[0023] In the fourteenth aspect, the embodiment of the present application may also provide a chip, including: a processing module and a communication interface, and the processing module can execute any method described in the second aspect above.

[0024] Furthermore, the chip also includes a storage module (such as a memory), the storage module is used to store instructions, the processing module is used to execute the instructions stored in the storage module, and the execution of the instructions stored in the storage module enables the chip to execute any method described in the second aspect.

[0025] An embodiment of the present application provides a repeated transmission method, device and readable storage medium, wherein the method processes the OFDM symbols included in N time slots according to the transmission parameters corresponding to the N time slots, wherein the above-mentioned N time slots correspond to the same transmission block TB or the same control information or the same signal; since the transmission parameters corresponding to the N time slots are not completely the same, the flexibility of the repeated transmission is improved, and the system efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of a communication system applicable to an embodiment of the present application;

[0027] Figure 2 A flowchart of a repeated transmission method provided in an embodiment of the present application;

[0028] Figure 3 A structural diagram of a DMRS pattern corresponding to a repeatedly transmitted PUSCH provided in an embodiment of the present application;

[0029] Figure 4 This is a schematic diagram of the structure of multi-slot PUSCH transmission shown in another embodiment of the present application;

[0030] Figure 5 A schematic diagram of a structure in which a multi-slot PUSCH transmission and a multi-slot physical uplink control channel (PUCCH) transmission partially overlap each other is shown in an embodiment of the present application;

[0031] Figure 6 A flowchart of a repeated transmission method provided by another embodiment of the present application;

[0032] Figure 7 A flowchart of a repeated transmission method provided by another embodiment of the present application;

[0033] Figure 8 A flowchart of a repeated transmission method provided by another embodiment of the present application;

[0034] Fig. 9 A flowchart of a repeated transmission method provided by another embodiment of the present application;

[0035] Fig.10 A flowchart of a repeated transmission method provided by another embodiment of the present application;

[0036] Fig.11 A schematic diagram of the structure of a terminal device provided in one embodiment of the present application;

[0037] Fig.12 A schematic diagram of the structure of a network device provided in one embodiment of the present application;

[0038] Fig.13 A schematic diagram of the structure of an electronic device provided in another embodiment of the present application;

[0039] Fig.14 A schematic diagram of the structure of an electronic device provided in another embodiment of the present application. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] The terms "first", "second", etc. in the specification, claims and the above drawings of the embodiments of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0042] With the continuous evolution and support of wireless communication technology, the Internet of Things (IoT) technology is developing rapidly. For example, the Machine Type Communication (MTC) / Enhanced Machine Type Communication (eMTC) and Narrow Band Internet of Things (NB-IoT) series standards promoted by the 3GPP organization have become candidate technical standards for 5G massive MTC technology. These technical standards are expected to play a huge role in all aspects of people's production and life, such as smart homes, smart cities, smart factories, remote monitoring, and smart transportation.

[0043] The existing MTC / eMTC and NB-IoT terminals are relatively low in cost, cheap, support ultra-low power consumption, and support deep and wide coverage scenarios. Therefore, they are conducive to the rapid popularization of IoT technology in the early stages of its development. However, these technologies also have some limitations in application scenarios. Since the design goal of MTC / eMTC and NB-IoT is to support some applications with low data rates and high transmission delays, they cannot be used in some IoT scenarios that require relatively high rates, such as video surveillance in smart security and industrial applications that require relatively low latency. If 5G new air interface (NR) terminals are directly used, the design indicators of NR terminals, such as transmission rate and transmission delay, far exceed the actual needs of these scenarios, and the relatively high cost is not conducive to market competition.

[0044] Therefore, in order to improve the terminal system for 5G massive MTC scenarios, it is necessary to design a type of NR MTC terminal that supports medium transmission rate and medium latency requirements while having low cost.

[0045] At present, NR terminals need to support at least 2 receiving channels, and NR terminals on certain frequency bands need to support 4 receiving channels; each receiving channel includes receiving antennas, filters, PA power amplifiers, AD samplers and other components. Therefore, reducing the number of RF channels required for NR terminals will significantly reduce terminal costs. Research results show that reducing a terminal with two RF channels to one RF channel can reduce the cost of the chip module by about 1 / 3.

[0046] As mentioned above, although reducing the number of RF channels of IoT terminals can effectively reduce the cost of the terminals, the reduction in the number of receiving antennas will also affect the receiving performance of the terminals, further affecting the downlink coverage. For example, if the number of receiving antennas of the terminal is reduced by half, such as from 2 receiving antennas to 1 receiving antenna, the reception of the downlink channel will lose about 3dB. Therefore, in order to compensate for the impact of reducing the number of RF channels of the terminal on the downlink coverage, it is necessary to design a signal transmission mechanism to compensate and recover the loss of downlink coverage.

[0047] On the other hand, in some scenarios, such as industrial monitoring, the communication module may be placed in an area blocked by metal objects (such as a robotic arm). Therefore, the network signal will be further lost. For such work scenarios, it is necessary to design a coverage enhancement solution to compensate for the performance loss.

[0048] On the other hand, in the early stages of 5G network deployment or in some remote areas, due to the limitations on the deployment density of network sites and the fact that 5G's operating frequency bands are generally higher, the channel penetration loss is large, and there will be some coverage gaps in the network or weak coverage at the edge of the cell.

[0049] Repeated transmission is a typical and effective solution for coverage enhancement. For example, theoretically, two repeated transmissions can bring 3dB of combined gain compared to a single transmission; and 10 repeated transmissions can bring 10dB of combined gain.

[0050] Currently, NR already supports multi-slot PDSCH and multi-slot PUSCH transmission schemes to improve the transmission performance of PDSCH and PUSCH and enhance signal coverage. The details are as follows:

[0051] 1. NR multi-slot PDSCH transmission

[0052] When the terminal is configured with aggregationFactorDL (downlink aggregation factor)>1, the resource allocation for PDSCH scheduling can be applied to aggregationFactorDL consecutive time slots. The transmission block TB (transmission block) transmitted to the UE is repeated in aggregationFactorDL consecutive time slots, and the transmission of PDSCH is limited to the transmission of a single multiple input multiple output layer (MIMO layer).

[0053] In the aggregationFactorDL consecutive time slots of PDSCH transmission, if the UE determines in the configuration acquisition process based on the time slot configuration that one of the time slots contains an uplink (UL) symbol in the allocated symbol of the UE's PDSCH transmission, the terminal ignores the PDSCH reception of this time slot. This means that Multi-slot PDSCH cannot be transmitted in a slot where the allocated symbol contains a UL symbol, but can be repeatedly transmitted in a slot where the allocated symbol is a flexible symbol or a downlink (DL) symbol.

[0054] 2. NR multi-slot PUSCH transmission

[0055] NR multi-slot PUSCH and NR multi-slot PDSCH have similar transmission mechanisms. When aggregationFactorUL>1, the same PUSCH TB block is repeatedly transmitted in aggregationFactorUL PUSCH slots, where the redundancy version of the nth transmitted TB block is determined based on Table 1 above.

[0056] In the aggregationFactorUL consecutive time slots of PUSCH transmission, if the UE determines in the configuration acquisition process based on the time slot configuration that one of the time slots contains a DL symbol in the allocated symbol of the UE's PUSCH transmission, the terminal ignores the PUSCH transmission of this time slot. This means that Multi-slot PUSCH cannot be transmitted in a slot where the allocated symbol contains a DL symbol, but can be repeatedly transmitted in a slot where the allocated symbol is a flexible symbol or a UL symbol.

[0057] And based on the multi-slot PUSCH / PDSCH transmission mechanism supported by NR, it has the following characteristics: 1. Multi-slot PDSCH / PUSCH is transmitted in multiple consecutive slots. 2. Multi-slot PDSCH can be transmitted in DL slots, or in slots where the allocated symbols are all downlink or flexible symbols, or in flexible slots; multi-slot PUSCH can be transmitted in UL slots, or in slots where the allocated symbols are uplink or flexible symbols, or in flexible slots.

[0058] In the multi-slot PDSCH / PUSCH transmission currently supported by NR, the pilot configuration, power, resource allocation, subcarrier spacing, etc. of each time slot are the same, which is difficult to adapt to the flexibility of the 5G NR network, resulting in poor repeated transmission performance and low system efficiency.

[0059] The core concept of the repeated transmission method provided in the embodiment of the present application is that: in the repeated transmission, different transmission parameters are used for different time slots in multiple time slots, so that the repeated transmission can be more flexible and the system efficiency is improved.

[0060] It should be noted that the repeated transmission method provided in the embodiment of the present application can be applied not only to data transmission, but also to control information transmission, and also to signal transmission. And the repeated transmission method provided in the embodiment of the present application can be applied not only to 5G networks, but also to other communication systems.

[0061] The following is a brief introduction to the implementation environment involved in the embodiments of the present application.

[0062] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: GSM (Global System of Mobile communication) system, CDMA (Code Division Multiple Access) system, WCDMA (Wideband Code Division Multiple Access) system, GPRS (General Packet Radio Service), LTE (Long Term Evolution) system, LTE FDD (Frequency Division Duplex) system, LTE TDD (Time Division Duplex) system, LTE-A (Advanced long term evolution) system, NR (New Radio) system, NR system evolution system, LTE-U (LTE-Based Access To Unlicensed Spectrum) system, NR-U (NR-Based Access To Unlicensed Spectrum) system, UMTS (Universal Mobile Telecommunication System), WiMAX (Worldwide Interoperability for Microwave Access (Global Interconnected Microwave Access) communication system, WLAN (Wireless Local Area Networks), WiFi (Wireless Fidelity), next generation communication system or other communication systems, etc.

[0063] Generally speaking, the number of connections supported by traditional communication systems is limited and easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but also support, for example, D2D (Device to Device) communication, M2M (Machine to Machine) communication, MTC (Machine Type Communication), V2V (Vehicle to Vehicle) communication and V2X (Vehicle to Everything) systems, etc. The embodiments of the present application can also be applied to these communication systems.

[0064] The system architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. A person of ordinary skill in the art can appreciate that with the evolution of network architecture 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.

[0065] For example, the communication system 100 used in the embodiment of the present application is as follows: Figure 1 As shown. The communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, terminal). The network device 110 may provide communication coverage for a specific geographical area, and may communicate with terminals located within the coverage area. In one implementation, the network device 110 may be an evolved base station (EvolutionalNode B, eNB or eNodeB) in an LTE system, or a wireless controller in a CRAN (Cloud Radio Access Network), or the network device may be a mobile switching center, a relay station, an access point, a hub, a switch, a bridge, a router, a network side device in a 5G network, or a network device in a future communication system, etc.

[0066] The communication system 100 also includes at least one terminal device 120 located within the coverage of the network device 110. As used herein, "terminal" includes but is not limited to connection via a wired line, such as PSTN (Public Switched Telephone Networks), DSL (Digital Subscriber Line), digital cable, direct cable connection; and / or another data connection / network; and / or via a wireless interface, such as, for a cellular network, WLAN (Wireless Local Area Network), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter; and / or another terminal configured to receive / send communication signals; and / or an IoT (Internet of Things) device. A terminal configured to communicate via a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; PCS (Personal Communications System) terminals that may combine cellular radiotelephones with data processing, fax, and data communications capabilities; PDAs that may include radiotelephones, pagers, Internet / Intranet access, Web browsers, notepads, calendars, and / or GPS (Global Positioning System) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. Terminal equipment may refer to access terminals, UEs (User Equipment), subscriber units, subscriber stations, mobile stations, mobile stations, remote stations, remote terminals, mobile devices, user terminals, terminals, wireless communication devices, user agents, or user devices. The access terminal can be a cellular phone, a cordless phone, a SIP (Session Initiation Protocol) phone, a WLL (Wireless Local Loop) station, a PDA (Personal Digital Assistant), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal in a 5G network, or a terminal in a future evolved PLMN, etc.

[0067] In one implementation, a 5G communication system or a 5G network may also be referred to as an NR system or an NR network.

[0068] Figure 1A network device and a terminal device are shown as examples. In some cases, the network device may be a sender device and the terminal device may be a receiver device; in other cases, the terminal device may be a sender device and the network device may be a receiver device.

[0069] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be referred to as a communication device. Figure 1 Taking the communication system 100 shown as an example, the communication equipment may include a network device 110 and a terminal device 120 with communication functions. The network device 110 and the terminal device 120 may be the specific devices described above and will not be repeated here. The communication equipment may also include other devices in the communication system 100, such as a network controller, a mobile management entity and other network entities, which is not limited in the embodiments of the present application.

[0070] The repeated transmission method provided by the present application is described in detail below through several specific embodiments.

[0071] Figure 2 This is a flowchart of a repeated transmission method provided in an embodiment of the present application. It should be noted that the repeated transmission method provided in this embodiment can be applied to the case where the terminal device is a sending device, and can also be applied to the case where the terminal device is a receiving device. Figure 2 As shown, the method of this embodiment includes:

[0072] S101. The terminal device processes the OFDM symbols of N time slots according to the transmission parameters corresponding to the N time slots, wherein the transmission parameters corresponding to the N time slots are not completely the same, and the N time slots correspond to the same transmission block TB or the same control information or the same signal.

[0073] The N time slots mentioned above are N time slots included in repeated transmission, N is an integer greater than 1, and the N time slots may correspond to the same transmission block, or the same control information, or the same signal.

[0074] If N time slots correspond to the same transmission block, the OFDM symbols included in the N time slots may be, for example, the OFDM symbols included in the PUSCH of the N time slots, or the OFDM symbols included in the PDSCH of the N time slots; if the N time slots correspond to the same control information, the OFDM symbols included in the N time slots may be, for example, the OFDM symbols included in the PUCCH of the N time slots, or the OFDM symbols included in the physical downlink control channel (PDCCH) of the N time slots, or the OFDM symbols included in the physical random access channel (PRACH) of the N time slots; if the N time slots correspond to the same signal, for example, the Channel State Information Reference Signal (CSI-RS), the Synchronization Signal Block (SSB), the Channel Sounding Reference Signal (SRS), etc., then among the OFDM symbols included in the N time slots, the OFDM symbols included in each time slot include OFDM symbols carrying the above signals.

[0075] That is to say, the repeated transmission including N time slots may be an uplink transmission of a physical channel or a physical signal, or may be a downlink transmission of a physical channel or a physical signal.

[0076] It should be noted that, in this solution, repeated transmission can also be called multi-slot transmission.

[0077] In the present scheme, the transmission parameters corresponding to the N time slots respectively may be determined by the terminal device according to the configuration information sent by the network device, that is, the network device instructs the terminal device on the transmission parameters corresponding to the above N time slots respectively; or, they may be preset, that is, pre-specified in the protocol, and the embodiments of the present application do not impose any restrictions on this.

[0078] The transmission parameters corresponding to the N time slots are not completely the same, and may include the following situations:

[0079] 1. The above N time slots correspond to different transmission parameters respectively.

[0080] For example, repeated transmission includes 12 time slots, namely time slot 0 to time slot 11, time slot 0 to time slot 11 respectively correspond to a transmission parameter, and these 12 transmission parameters are completely different.

[0081] 2. Among N time slots, M time slots are used as a period, different time slots included in each period correspond to the same transmission parameters, and different time slots in adjacent periods correspond to different transmission parameters, where M is an integer greater than or equal to 1.

[0082] For example, the repeated transmission includes 12 time slots, namely time slot 0 to time slot 11; with 4 time slots as a period, time slot 0 to time slot 3 all correspond to transmission parameter 1, time slot 4 to time slot 7 all correspond to transmission parameter 2, and time slot 8 to time slot 11 all correspond to transmission parameter 3; or, the repeated transmission includes 12 time slots, with 4 time slots as a period, time slot 0 to time slot 3 all correspond to transmission parameter 1, time slot 4 to time slot 7 all correspond to transmission parameter 2, and time slot 8 to time slot 11 all correspond to transmission parameter 1.

[0083] 3. Among N time slots, M time slots are used as a period, and the transmission parameters corresponding to different time slots included in each period are not completely the same, and in adjacent periods, time slots at the same position correspond to the same transmission parameters, where M is an integer greater than or equal to 1.

[0084] For example, repeated transmission includes 12 time slots, namely time slot 0 to time slot 11; with 4 time slots as a period, time slot 0 and time slot 1 both correspond to transmission parameter 1, and time slot 2 and time slot 3 both correspond to transmission parameter 2; in the above 12 time slots, the order of the transmission parameters corresponding to time slot 0 to time slot 3 is circulated, that is, time slot 4 and time slot 5 both correspond to transmission parameter 1, time slot 6 and time slot 7 both correspond to transmission parameter 2, time slot 8 and time slot 9 both correspond to transmission parameter 1, and time slot 10 and time slot 11 both correspond to transmission parameter 2. Of course, in some cases, time slot 0 to time slot 3 can also correspond to different transmission parameters, and in the above 12 time slots, the order of the transmission parameters corresponding to time slot 0 to time slot 3 is circulated.

[0085] Of course, in practical applications, the transmission parameters corresponding to the N time slots may not be completely the same and may not be based on M time slots as a period. As long as the transmission parameters corresponding to the N time slots are not completely the same, the embodiment of the present application does not limit the specific implementation method of the transmission parameters corresponding to the N time slots being not completely the same.

[0086] In one implementation, the transmission parameters may include: one or a combination of reference signal configuration, transmit power, time-frequency domain resources, and subcarrier spacing.

[0087] 1. The reference signal configurations corresponding to the N time slots are not exactly the same

[0088] Here we take the demodulation reference signal (DMRS) as an example to illustrate:

[0089] In the prior art, in 5G NR and other systems such as LTE, the reference signal for channel demodulation is generally inserted into DMRS (demodulation reference signal) with slot as the time unit. The demodulation reference signal is a signal pre-agreed by the sender and the receiver, with fixed time-frequency characteristics and a pre-configured sequence. The DMRS structure can be referred to Figure 3As shown, in Figure 3 In the figure, port 0 represents a port of DMRS, and the receiving device can demodulate the data carried by the payload in the time slot through DMRS.

[0090] In 5G NR, in each time slot, the DMRS of PUSCH or PDSCH is mapped with at least one pre-DMRS for data demodulation. For example, the PUSCH mapping pattern type A (mapping type A) and pattern type B (mapping type B) can be referred to as shown in the following Table 1:

[0091] Table 1

[0092]

[0093]

[0094] In Table 1 above, d Indicates the number of OFDM symbols occupied by PUSCH in the time domain. There may be several values, among which l0 is always the first OFDM symbol in the PUSCH region, that is, the time domain position of the pre-DMRS. The actual value is zero, which means the first OFDM symbol in the time domain of the PUSCH region. The other items in Table 1 are the time domain positions of the additional reference signals. For example, "l0,7,11" means that two DMRS symbols are attached, one in the 7th OFDM symbol and the other in the 11th OFDM symbol.

[0095] In the communication system, the above "pos x" parameter selection can be obtained through the configuration of the high-level RRC, for example, through "dmrs-AdditionalPosition{pos0, pos1, pos3}".

[0096] In addition, if dmrs-AdditionalPosition is not filled in, the default value "pos2" is used.

[0097] At present, in repeated transmission, each time slot uses the same demodulation reference signal symbol position. When PUSCH or PDSCH is configured with only one pre-DMRS, the demodulation performance of OFDM symbols far from the pre-DMRS in the repeatedly transmitted time slot is poor.

[0098] Therefore, in this solution, different reference signal configurations are used for multiple time slots of repeated transmission to improve repeated transmission performance and system operating efficiency.

[0099] In one implementation, the reference signal configuration includes: one or a combination of the number of reference signal symbols, the reference signal frequency density, and the number of antenna ports.

[0100] During repeated transmission, the reference signal configurations corresponding to the N time slots are not exactly the same. For example, in the order of the 1st time slot to the Nth time slot, the reference signal configurations of the earlier time slots may be more reference signal symbols, more reference signal frequency density, and more antenna ports; and the reference signal configurations of the later time slots may be fewer reference signal symbols, fewer reference signal frequency density, and fewer antenna ports.

[0101] For example, in some scenarios, the receiving device can use reference signals at different times to jointly perform channel estimation, thereby improving channel estimation performance. Since multi-slot transmission can be used for weak cell coverage or low SNR working range, improving channel estimation performance is particularly important for improving system performance.

[0102] Take multi-slot PUSCH transmission as an example, refer to Figure 4 As shown, the terminal device sends PUSCH to the base station in N = 4 consecutive time slots, and in each time slot the terminal device sends PUSCH and its pilot signal DMRS to the base station; in the process of receiving multi-slot PUSCH, the base station obtains the channel estimation results H1, H2, H3, H4 of each time slot based on the pilot DMRS in each time slot; further, based on the channel estimation results of each time slot, the PUSCH reception signal of each time slot is channel equalized; finally, the PUSCHs after equalization in multiple time slots are merged and processed through demodulation, decoding and other steps.

[0103] As an example of channel estimation optimization, when processing the PUSCH of each time slot, the base station can obtain a joint channel estimation result in conjunction with the pilot DMRS before the time slot, thereby improving performance. The base station equalizes the PUSCH of the first time slot based on the aforementioned H1; when processing the PUSCH of the second time slot; the base station obtains H2' based on the aforementioned H1 and H2 (for example, H2' is obtained by taking a weighted average based on the aforementioned channel estimation result H1 and the signal estimation result H2), and uses H2' to equalize the PUSCH of the second time slot; similarly, the base station obtains H3' based on the aforementioned H1, H2 and H3, and uses H3' to equalize the PUSCH of the third time slot; and so on, until the channel estimation results of all time slots are obtained.

[0104] From the above example, it can be seen that when performing joint channel estimation on N time slots, the processed channel estimation result corresponding to the nth time slot is obtained based on the channel estimation results of the first n-1 time slots. A possible implementation method is to obtain the processed channel estimation result corresponding to the nth time slot based on the channel estimation results corresponding to the first n time slots and the weight coefficients corresponding to the first n time slots. Where n is an integer greater than or equal to 2 and less than or equal to N.

[0105] The weight coefficients corresponding to the respective time slots may be the same or different. For example, when performing joint channel estimation on N time slots, the weight coefficient corresponding to the time slot with the same reference signal configuration as the nth time slot in the first n time slots is smaller than the weight coefficient corresponding to the time slot with a different reference signal configuration as the nth time slot. The weight coefficient corresponding to the time slot with a different reference signal configuration as the nth time slot may also change with the change of pilot density, for example, the greater the pilot density, the greater the weight coefficient.

[0106] According to the above repeated transmission process, it can be known that the subsequent time slots can use the channel estimation results of the previous time slots to improve the channel estimation performance. In other words, in the multi-slot transmission process, the pilots in the previous time slots can play a role in the channel estimation of the subsequent time slots. Therefore, the performance of the entire multi-slot transmission can be improved by increasing the pilot density of the previous time slots.

[0107] Specifically, the higher the pilot density of the front time slots, the better the channel estimation performance of the front time slots; in addition, since the pilots of the front time slots can play a role in the channel estimation of the subsequent time slots, the higher the pilot density of the front time slots, the better the channel estimation performance of the subsequent time slots, thereby effectively improving the performance of multi-slot transmission.

[0108] 2. The transmit powers corresponding to the N time slots are not exactly the same

[0109] In some scenarios, using different transmission powers in different time slots during multi-slot transmission is more conducive to improving system performance. For example, from a system perspective, network equipment expects to control the total interference level of different time slots. The total interference signal strength depends not only on the uplink signal transmission of one user, but also on the uplink signal transmission of other users in the same cell or even in adjacent cells. Therefore, in the multiple time slots where multi-slot transmission is located, if the network equipment can predict the interference conditions of different time slots and the distribution of interference levels, it can set the transmission power of each time slot in the multi-slot transmission.

[0110] In some other scenarios, the multi-slot transmission of one channel may overlap or partially overlap with the multi-slot transmission of another channel. In the time slot where the partial overlap occurs, the terminal's transmit power may be limited. Therefore, compared with the non-overlapping time slot, the uplink transmit power also needs to be adjusted. Figure 5 An example of partial overlap between multi-slot PUSCH and multi-slot PUCCH is shown in FIG. In PUSCH transmission slots 2 and 3, which correspond to PUCCH transmission slots 0 and 1, the two overlap, so the terminal device needs to send two channels in the overlapping time slots, and the total transmission power needs to be allocated between the two channels, so there is a situation where the channel is restricted.

[0111] In addition, in some cases, when the receiving device performs reception processing on the OFDM symbols of N received time slots, it can obtain the weight coefficient of the time slot during reception processing based on the transmission power of each time slot. The weight coefficient can reflect the importance of the time slot during reception processing. For example, a time slot with a larger transmission power has a larger weight coefficient corresponding to it, and a time slot with a smaller transmission power has a smaller weight coefficient corresponding to it.

[0112] Specifically, when N time slots are merged according to the transmission power, by considering the influence of the transmission power, the time slots with larger transmission power correspond to larger weight coefficients, and the time slots with smaller transmission power correspond to smaller weight coefficients, which can improve the merging processing gain and effectively improve the performance of multi-time slot transmission.

[0113] 3. The time-frequency domain resources corresponding to the N time slots are not exactly the same

[0114] In the prior art, when transmitting PDSCH and PUSCH in multiple time slots, the resource allocation of PDSCH and PUSCH in each time slot is required to be consistent. This requirement makes multi-slot transmission unable to adapt well to the flexible frame structure of NR. And in the aggregationFactorDL consecutive time slots of PDSCH transmission, if the UE determines in the configuration acquisition process based on the time slot configuration that one of the time slots contains UL symbols in the allocated symbols of the UE's PDSCH transmission, the terminal ignores the PDSCH reception of the time slot. Or, in the aggregationFactorUL consecutive time slots of PUSCH transmission, if the UE determines in the configuration acquisition process based on the time slot configuration that one of the time slots contains DL symbols in the allocated symbols of the UE's PUSCH transmission, the terminal ignores the PUSCH transmission of the time slot.

[0115] The existing technology has at least the following two disadvantages:

[0116] 1) Ignoring or abandoning PDSCH and PUSCH transmissions reduces the number of effective transmissions, which is not conducive to obtaining coverage enhancement performance; 2) Multi-slot transmission cannot utilize the resources of the time slots containing partial symbols.

[0117] Therefore, the embodiments of the present application improve resource utilization and system efficiency by adopting different time domain and frequency domain resource allocations in different time slots during multi-slot transmission.

[0118] A possible implementation method: For each time slot of multi-slot transmission, the network device authorizes the same time-frequency domain resource allocation, for example, using downlink control information (DCI) to authorize the same time-frequency domain resources for the terminal device. When in one of the time slots, there are unavailable time domain symbols or unavailable frequency domain bandwidths in the allocated time domain symbols or frequency domain bandwidths, the terminal device does not transmit in the allocated time domain symbols or frequency domain bandwidths. In other words, the terminal device does not transmit in other time-frequency domain resources authorized by the network device except for the determined unavailable time domain symbols or unavailable frequency domain bandwidths.

[0119] Another possible implementation is that different time-frequency domain resource allocations may be authorized for different time slots of multi-slot transmission. For example, when the authorization is sent using DCI, the DCI may authorize the time-frequency domain resource allocations of different time slots. In this way, the authorization sent in each time slot may be reasonably set according to the situation of the time slot.

[0120] By adopting the above-mentioned method, multi-slot transmission can better adapt to the structure of NR flexible time slots, improve resource utilization efficiency and system work efficiency.

[0121] 4. The subcarrier spacings corresponding to the N time slots are not exactly the same

[0122] Different subcarrier spacings are set for the N time slots, for example, the subcarrier spacing of some of the N time slots is 15 KHz, and the subcarrier spacing of other time slots in the N time slots is 30 KHz. In practical applications, the subcarrier spacing is not limited to 15 KHz and 30 KHz, for example, the subcarrier spacing can also be 30 KHz, 60 KHz, 120 KHz, 240 KHz, etc.

[0123] In some scenarios, such as when repeated transmission is performed in high-speed motion scenarios, OFDM frequency hopping can be achieved by using a larger subcarrier spacing in some time slots of repeated transmission and a smaller subcarrier spacing in other time slots, thereby improving the system's anti-interference ability and thus improving the performance of repeated transmission.

[0124] It should be noted that the processing of the OFDM symbols of N time slots may be different according to the different physical channels or physical signals, and the sending device performs the corresponding sending processing, and the receiving device performs the corresponding receiving processing. For example, if the OFDM symbols of N time slots are OFDM symbols included in N PUSCHs, and the terminal device is a sending device, the processing of the OFDM symbols of N time slots may include mapping and modulation; if the OFDM symbols of N time slots are OFDM symbols included in N PDSCHs, and the terminal device is a receiving device, the processing of the OFDM symbols of N time slots may include demapping and demodulation.

[0125] In this embodiment, the terminal device processes the OFDM symbols included in N time slots according to the transmission parameters corresponding to the N time slots, wherein the N time slots correspond to the same transmission block TB or the same control information or the same signal; since the transmission parameters corresponding to the N time slots are not exactly the same, the flexibility of repeated transmission is improved and the system efficiency is improved.

[0126] Figure 6 This is a flowchart of a repeated transmission method provided by another embodiment of the present application. Figure 6 As shown, the method of this embodiment includes:

[0127] S200. The terminal device receives configuration information from the network device, and obtains transmission parameters corresponding to N time slots respectively according to the configuration information.

[0128] In one case, the configuration information may include information for indicating transmission parameters respectively corresponding to the N time slots, and the terminal device may determine the transmission parameters respectively corresponding to the N time slots according to the configuration information.

[0129] In other cases, the configuration information includes information for indicating transmission parameters corresponding to some of the N time slots. For example, in N time slots, with M time slots as a period, different time slots included in each period correspond to the same transmission parameters, and different time slots in adjacent periods correspond to different transmission parameters. Then the configuration information may include information for indicating the transmission parameters corresponding to the M time slots in each divided period. The terminal device can determine the configuration mode of the transmission parameters according to the configuration information, and can further determine the transmission parameters corresponding to the M time slots in each divided period according to the configuration information.

[0130] For example, the repeated transmission includes 12 time slots, namely time slot 0 to time slot 11; with 4 time slots as a period, time slot 0 to time slot 3 all correspond to transmission parameter 1, time slot 4 to time slot 7 all correspond to transmission parameter 2, and time slot 8 to time slot 11 all correspond to transmission parameter 3, then the configuration information may include indication information for indicating transmission parameter 1, transmission parameter 2 and transmission parameter 3.

[0131] For another example, the repeated transmission includes 12 time slots, namely time slot 0 to time slot 11; with 4 time slots as a period, time slot 0 and time slot 1 both correspond to transmission parameter 1, and time slot 2 and time slot 3 both correspond to transmission parameter 2, then the configuration information may include indication information for indicating transmission parameter 1 and transmission parameter 2.

[0132] In practical applications, the value of M may be indicated by a network device, for example, the configuration information includes the value of M; in other cases, the value of M may be preset; in other cases, the value of M may also be determined by the terminal device based on the number of transmission parameters indicated by the configuration information.

[0133] S201. The terminal device processes the OFDM symbols of N time slots according to the transmission parameters corresponding to the N time slots, wherein the transmission parameters corresponding to the N time slots are not completely the same, and the N time slots correspond to the same transmission block TB or the same control information or the same signal.

[0134] In this embodiment, step S201 and Figure 2 Step S101 in the embodiment shown is similar, and can be referred to Figure 2 The detailed description in the illustrated embodiment will not be repeated here.

[0135] In this embodiment, the terminal device determines the transmission parameters corresponding to the N time slots respectively through the configuration information sent by the network device, and processes the OFDM symbols included in the N time slots according to the determined transmission parameters corresponding to the N time slots respectively, wherein the above N time slots correspond to the same transmission block TB or the same control information or the same signal; since the transmission parameters corresponding to the N time slots are not completely the same, the flexibility of repeated transmission is improved and the system efficiency is improved. In addition, if the configuration information includes information for indicating the transmission parameters corresponding to some of the N time slots respectively, the signaling overhead of the system can be reduced.

[0136] Figure 7 This is a flowchart of a repeated transmission method provided by another embodiment of the present application. It should be noted that the repeated transmission method provided by this embodiment can be applied to the case where the network device is a sending device, and can also be applied to the case where the network device is a receiving device. Figure 7 As shown, the method of this embodiment includes:

[0137] S301. The network device processes OFDM symbols of N time slots according to transmission parameters corresponding to the N time slots, wherein the transmission parameters corresponding to the N time slots are not completely the same, and the N time slots correspond to the same transmission block TB or the same control information or the same signal.

[0138] The N time slots are N time slots included in repeated transmission, N is an integer greater than 1, and the N time slots may correspond to the same transmission block, or the same control information, or the same signal. In addition, the repeated transmission including N time slots may be an uplink transmission of a physical signal or a physical signal, or may be a downlink transmission of a physical signal or a physical signal.

[0139] If N time slots can correspond to the same transmission block, the OFDM symbols included in the N time slots can, for example, be the OFDM symbols included in the PUSCH of the N time slots, or the OFDM symbols included in the PDSCH of the N time slots; if N time slots correspond to the same control information, the OFDM symbols included in the N time slots can, for example, be the OFDM symbols included in the PUCCH of the N time slots, or the OFDM symbols included in the PDCCH of the N time slots, or the OFDM symbols included in the PRACH of the N time slots; if N time slots correspond to the same signal, then among the OFDM symbols included in the N time slots, the OFDM symbols included in each time slot include the OFDM symbols carrying the above-mentioned signal.

[0140] In the present scheme, the transmission parameters corresponding to the N time slots respectively may be determined by the terminal device according to the configuration information sent by the network device, that is, the network device instructs the terminal device on the transmission parameters corresponding to the above N time slots respectively; or, they may be preset, that is, pre-specified in the protocol, and the embodiments of the present application do not impose any restrictions on this.

[0141] The transmission parameters corresponding to the N time slots are not completely the same, and may include the following situations:

[0142] 1. The above N time slots correspond to different transmission parameters respectively.

[0143] 2. Among N time slots, M time slots are used as a period, different time slots included in each period correspond to the same transmission parameters, and different time slots in adjacent periods correspond to different transmission parameters, where M is an integer greater than or equal to 1.

[0144] 3. Among N time slots, M time slots are used as a period, and the transmission parameters corresponding to different time slots included in each period are not completely the same, and in adjacent periods, time slots at the same position correspond to the same transmission parameters, where M is an integer greater than or equal to 1.

[0145] The situations shown here are similar to those on the terminal device side. Figure 2 The detailed description in the illustrated embodiment will not be repeated here.

[0146] In one implementation, the transmission parameters may include: one or a combination of reference signal configuration, transmit power, time-frequency domain resources, and subcarrier spacing. For a detailed introduction to the transmission parameters, please refer to Figure 2 The detailed description in the illustrated embodiment will not be repeated here.

[0147] It should be noted that the processing of OFDM symbols of N time slots may be based on different physical signals, or the physical signals may have differences. For example, if the OFDM symbols of N time slots are OFDM symbols included in N PUSCHs received by the network device, then the processing of the OFDM symbols of the N time slots may include demapping and demodulation; if the OFDM symbols of N time slots are OFDM symbols included in N PDSCHs that need to be sent to the terminal device, then the processing of the OFDM symbols of the N time slots may include mapping and modulation.

[0148] In this embodiment, the network device processes the OFDM symbols included in the N time slots according to the transmission parameters corresponding to the N time slots. Since the transmission parameters corresponding to the N time slots are not completely the same, the flexibility of repeated transmission is improved and the system efficiency is improved.

[0149] Figure 8 This is a flowchart of a repeated transmission method provided by another embodiment of the present application. Figure 8 As shown, the method of this embodiment includes:

[0150] S400: The network device sends configuration information to the terminal device.

[0151] In one case, the configuration information may include information for indicating transmission parameters corresponding to the N time slots respectively. The terminal device may determine the transmission parameters corresponding to the N time slots respectively according to the configuration information, and process the received OFDM symbols of the N time slots.

[0152] In other cases, the configuration information includes information for indicating transmission parameters corresponding to some of the N time slots. For example, in N time slots, with M time slots as a period, different time slots included in each period correspond to the same transmission parameters, and different time slots in adjacent periods correspond to different transmission parameters. Then the configuration information may include information for indicating the transmission parameters corresponding to the M time slots in each divided period. The terminal device can determine the configuration mode of the transmission parameters according to the configuration information, and can further determine the transmission parameters corresponding to the M time slots in each divided period according to the configuration information.

[0153] S401. The network device processes OFDM symbols of N time slots according to transmission parameters corresponding to the N time slots, wherein the transmission parameters corresponding to the N time slots are not completely the same, and the N time slots correspond to the same transmission block TB or the same control information or the same signal.

[0154] In this embodiment, the network device may be a sending device, and the terminal device may be a receiving device.

[0155] It should be noted that there is no particular order in which S400 and S401 are executed.

[0156] In this embodiment, the network device sends configuration information indicating the transmission parameters corresponding to N time slots to the terminal device, and processes the OFDM symbols of the N time slots according to the transmission parameters corresponding to the N time slots. Since the transmission parameters corresponding to the N time slots are not completely the same, the flexibility of repeated transmission is improved and the system efficiency is improved. In addition, the network device sends configuration information to the terminal device so that the terminal device can process the received OFDM symbols of the N time slots according to the configuration information, thereby ensuring the reliability of repeated transmission. In addition, if the configuration information includes information indicating the transmission parameters corresponding to some of the N time slots, the signaling overhead of the system can be reduced.

[0157] In a specific embodiment, the sending device is a terminal device, and the receiving device is a network device.

[0158] Fig. 9 This is a flowchart of a repeated transmission method provided by another embodiment of the present application. Fig. 9 As shown, the method of this embodiment includes:

[0159] S501. The terminal device determines transmission parameters corresponding to N time slots respectively, wherein the transmission parameters corresponding to the N time slots are not completely the same, and the transmission parameters include: one or a combination of reference signal configuration, time-frequency domain resources, and subcarrier spacing.

[0160] The transmission parameters corresponding to the N time slots are determined according to the configuration information sent by the network device, and may also be preset.

[0161] Correspondingly, the terminal device receives configuration information sent by the network device, and the configuration information may include transmission parameters corresponding to the N time slots, or transmission parameters corresponding to some of the N time slots.

[0162] S502. The terminal device performs transmission processing according to the transmission parameters corresponding to the N time slots, and generates OFDM symbols included in the N time slots.

[0163] Exemplarily, the OFDM symbols of N time slots generated by the terminal device are, for example, OFDM symbols included in PUSCH of N time slots, or OFDM symbols included in PUCCH of N time slots, or OFDM symbols included in PRACH of N time slots. Then the transmission processing performed by the terminal device is mapping and modulation.

[0164] In this embodiment, the terminal device maps and modulates the OFDM symbols included in the N time slots according to the transmission parameters corresponding to the N time slots. Since the transmission parameters corresponding to the N time slots are not exactly the same, the flexibility of repeated transmission is improved and the system efficiency is improved.

[0165] In an implementation manner, if the transmission parameters corresponding to the N time slots are determined according to the configuration information sent by the network device, the following may be further included before S501:

[0166] S500: The network device sends configuration information to the terminal device.

[0167] Among them, the detailed introduction of the configuration information can refer to the description in the above embodiment, which will not be repeated here.

[0168] In one implementation, after S502, the following steps may also be included:

[0169] S503. The terminal device sends N time slots according to the transmission powers respectively corresponding to the N time slots, and the transmission powers respectively corresponding to the N time slots are not completely the same.

[0170] Correspondingly, the network device receives OFDM symbols corresponding to the N time slots respectively sent by the terminal device.

[0171] The transmission powers corresponding to the N time slots may be obtained by the terminal device according to the configuration of the network device, or may be preset. The terminal device transmits the N time slots according to the obtained transmission powers corresponding to the N time slots.

[0172] S504. The network device receives and processes the OFDM symbols of the N time slots according to the transmission parameters corresponding to the N time slots, and obtains data or control information or signals carried by the OFDM symbols of the N time slots, wherein the transmission parameters corresponding to the N time slots are not completely the same.

[0173] Exemplarily, the network device can perform joint channel estimation based on the reference signal configurations corresponding to the N time slots; perform channel equalization on the N time slots according to the processed channel estimation results corresponding to the N time slots; and merge the results after equalization of the N time slots, and process them through demodulation, decoding and other steps, so as to obtain the data or control information or signal carried by the OFDM symbols of the N time slots.

[0174] In this embodiment, different transmission parameters are used in N time slots, thereby improving the performance of repeated transmission and the system efficiency.

[0175] In another specific embodiment, the sending device is a network device, and the receiving device is a terminal device.

[0176] Fig.10 This is a flowchart of a repeated transmission method provided by another embodiment of the present application. Fig.10 As shown, the method of this embodiment includes:

[0177] S601. A network device determines transmission parameters corresponding to N time slots, respectively. The transmission parameters corresponding to the N time slots are not completely the same. The transmission parameters include one or a combination of reference signal configuration, time-frequency domain resources, and subcarrier spacing.

[0178] The transmission parameters corresponding to the N time slots may be acquired by the network device or may be preset.

[0179] S602: The network device performs transmission processing according to transmission parameters corresponding to N time slots, respectively, to generate OFDM symbols included in the N time slots.

[0180] Exemplarily, the OFDM symbols of N time slots generated by the network device are, for example, OFDM symbols included in the PDSCH of N time slots, or OFDM symbols included in the PDCCH of N time slots, or OFDM symbols included in the PRACH of N time slots.

[0181] In this embodiment, the network device maps and modulates the OFDM symbols included in the N time slots according to the transmission parameters corresponding to the N time slots. Since the transmission parameters corresponding to the N time slots are not exactly the same, the flexibility of repeated transmission is improved and the system efficiency is improved.

[0182] In one implementation, after S602, the following steps may also be included:

[0183] S603: The network device sends N time slots according to the transmission powers respectively corresponding to the N time slots, and the transmission powers respectively corresponding to the N time slots are not completely the same.

[0184] Correspondingly, the network device receives OFDM symbols corresponding to the N time slots respectively sent by the terminal device.

[0185] The transmission powers corresponding to the N time slots may be obtained by the network device according to the interference conditions of different time slots and the distribution of interference levels, or may be determined according to its own channel overlap conditions, which is not limited in this embodiment. The network device transmits the N time slots according to the obtained transmission powers corresponding to the N time slots.

[0186] In one implementation, if the terminal device determines the transmission parameters corresponding to the N time slots respectively according to the configuration information sent by the network device, it may also include:

[0187] S603', the network device sends configuration information to the terminal device.

[0188] The configuration information may include information for indicating transmission parameters corresponding to the N time slots, or information for indicating transmission parameters corresponding to some of the N time slots.

[0189] It should be noted that the execution order of S603', S602 and S603 is not specific.

[0190] S604. The terminal device obtains transmission parameters corresponding to N time slots respectively according to the configuration information.

[0191] S605. The terminal device receives and processes the OFDM symbols of the N time slots according to the transmission parameters corresponding to the N time slots, and obtains data or control information or signals carried by the OFDM symbols of the N time slots.

[0192] Specifically, the terminal device can perform joint channel estimation based on the transmission parameter reference signal configuration corresponding to the N time slots; perform channel equalization on the N time slots according to the processed channel estimation results corresponding to the N time slots; and merge the results after equalization of the N time slots, and process them through demodulation, decoding and other steps, so as to obtain the data or control information or signal carried by the OFDM symbols of the N time slots.

[0193] In this embodiment, different transmission parameters are used in N time slots, thereby improving the performance of repeated transmission and the system efficiency.

[0194] Fig.11 This is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application. Fig.11 As shown, the terminal device 200 provided in this embodiment includes: a processing module 201.

[0195] Among them, the processing module 201 is used to process the OFDM symbols of the N time slots according to the transmission parameters corresponding to the N time slots, wherein the transmission parameters corresponding to the N time slots are not completely the same, and the N time slots correspond to the same transmission block TB or the same control information or the same signal, and N is an integer greater than 1.

[0196] The terminal device 200 provided in this embodiment can be used to execute the technical solution executed by the terminal device in any of the aforementioned method embodiments. The implementation principles and technical solutions are similar and will not be repeated here.

[0197] In some possible designs, the transmission parameters corresponding to the N time slots are not completely the same, including:

[0198] Among the N time slots, M time slots are used as a period, different time slots included in each period correspond to the same transmission parameters, and different time slots in adjacent periods correspond to different transmission parameters, where M is an integer greater than or equal to 1.

[0199] In some possible designs, the transmission parameters corresponding to the N time slots are not completely the same, including:

[0200] Among the N time slots, M time slots are used as a period, and the transmission parameters corresponding to different time slots included in each period are not completely the same, and in adjacent periods, time slots at the same position correspond to the same transmission parameters, where M is an integer greater than or equal to 1.

[0201] In some possible designs, the transmission parameters corresponding to the N time slots are determined by the terminal device based on configuration information.

[0202] In some possible designs, the terminal device also includes: a transceiver module; the transceiver module is specifically used to receive the configuration information.

[0203] In some possible designs, it is characterized in that the transmission parameters corresponding to the N time slots are preset.

[0204] In some possible designs, the transmission parameters include at least one or a combination of: reference signal configuration, transmit power, time-frequency domain resources, and subcarrier spacing.

[0205] In some possible designs, the reference signal configuration includes at least one or a combination of: the number of reference signal symbols, the reference signal frequency density, and the number of antenna ports.

[0206] In some possible designs, the processing module 201 is specifically used to perform transmission processing according to the transmission parameters corresponding to the N time slots, respectively, to generate OFDM symbols of the N time slots;

[0207] The transceiver module is further used to send the OFDM symbols of the N time slots according to the transmission powers respectively corresponding to the N time slots.

[0208] In some possible designs, the processing module 201 is specifically used to perform receiving processing according to the transmission parameters corresponding to the N time slots, and obtain the transmission block TB or control information or signal carried by the OFDM symbols of the N time slots.

[0209] The terminal device provided in the embodiment of the present application can be used to execute the technical solution executed by the terminal device in any of the above embodiments. The implementation principles and technical solutions are similar and will not be repeated here.

[0210] Fig.12This is a schematic diagram of the structure of a network device provided in an embodiment of the present application. Fig.12 As shown, the terminal device 300 provided in this embodiment includes: a processing module 301.

[0211] A processing module is used to process the OFDM symbols of the N time slots according to the transmission parameters corresponding to the N time slots, wherein the transmission parameters corresponding to the N time slots are not completely the same, the N time slots correspond to the same transmission block TB or the same control information or the same signal, and N is an integer greater than 1.

[0212] The network device 300 provided in this embodiment can be used to execute the technical solution executed by the network device in any of the aforementioned method embodiments. The implementation principles and technical solutions are similar and will not be repeated here.

[0213] In some possible designs, the transmission parameters corresponding to the N time slots are not completely the same, including:

[0214] Among the N time slots, M time slots are used as a period, different time slots included in each period correspond to the same transmission parameters, and different time slots included in adjacent periods correspond to different transmission parameters, where M is an integer greater than or equal to 1.

[0215] In some possible designs, the transmission parameters corresponding to the N time slots are not completely the same, including:

[0216] Among the N time slots, M time slots are used as a period, and the transmission parameters corresponding to different time slots included in each period are not completely the same, and in adjacent periods, time slots at the same position correspond to the same transmission parameters, where M is an integer greater than or equal to 1.

[0217] In some possible designs, the transmission parameters corresponding to the N time slots are configured by the network device.

[0218] In some possible designs, the network device also includes: a transceiver module; the transceiver module is used to send configuration information.

[0219] In some possible designs, the transmission parameters corresponding to the N time slots are preset.

[0220] In some possible designs, the transmission parameters include at least one or a combination of: reference signal configuration, transmit power, time-frequency domain resources, and subcarrier spacing.

[0221] In some possible designs, the reference signal configuration includes at least one or a combination of: the number of reference signal symbols, the reference signal frequency density, and the number of antenna ports.

[0222] In some possible designs, the processing module is specifically used to perform transmission processing according to the transmission parameters corresponding to the N time slots respectively, to generate OFDM symbols of the N time slots;

[0223] The transceiver module is further used to send the OFDM symbols of the N time slots according to the transmission powers respectively corresponding to the N time slots.

[0224] In some possible designs, the processing module is specifically used to perform receiving processing according to the transmission parameters corresponding to the N time slots, and obtain the transmission block TB or control information or signal carried by the OFDM symbols of the N time slots.

[0225] The network device provided in the embodiment of the present application can be used to execute the technical solution executed by the network device in any of the above embodiments. The implementation principles and technical solutions are similar and will not be repeated here.

[0226] Fig.13 This is a schematic diagram of the structure of an electronic device provided by another embodiment of the present application. Fig.11 As shown, the electronic device 400 includes: a processor 411, a memory 412, and an interface 413 for communicating with other devices;

[0227] The memory 412 stores computer-executable instructions;

[0228] The processor 411 executes the computer-executable instructions stored in the memory, so that the processor 411 executes the technical solution executed by the terminal device in any of the aforementioned method embodiments.

[0229] Fig.13 This is a simple design of an electronic device. The embodiments of the present application do not limit the number of processors and memories in the electronic device. Fig.13 Only the number 1 is used as an example.

[0230] In the above Fig.13 In a specific implementation of the electronic device shown, the memory 412 , the processor 411 , and the interface 413 may be connected via a bus 414 . In one implementation, the memory 412 may be integrated inside the processor 411 .

[0231] Fig.14 This is a schematic diagram of the structure of an electronic device provided by another embodiment of the present application. Fig.14 As shown, the electronic device 500 includes: a processor 511, a memory 512, and an interface 513 for communicating with other devices;

[0232] The memory 512 stores computer-executable instructions;

[0233] The processor 511 executes the computer-executable instructions stored in the memory, so that the processor 511 executes the technical solution executed by the terminal device in any of the aforementioned method embodiments.

[0234] Fig.14 This is a simple design of an electronic device. The embodiments of the present application do not limit the number of processors and memories in the electronic device. Fig.14 Only the number 1 is used as an example.

[0235] In the above Fig.14 In a specific implementation of the electronic device shown, the memory 512 , the processor 511 , and the interface 513 may be connected via a bus 514 . In one implementation, the memory 512 may be integrated inside the processor 511 .

[0236] An embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the technical solution executed by a terminal device in any of the above embodiments.

[0237] An embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the technical solution executed by the network device in any of the above embodiments.

[0238] An embodiment of the present application provides a computer program product, including: program instructions, which are used to implement the technical solution executed by a terminal device in any of the above embodiments.

[0239] An embodiment of the present application provides a computer program product, including: program instructions, where the program instructions are used to implement the technical solution executed by the network device in any of the above embodiments.

[0240] An embodiment of the present application provides a program, which, when executed by a processor, is used to execute the technical solution executed by a terminal device in any of the above embodiments.

[0241] An embodiment of the present application provides a program, which, when executed by a processor, is used to execute the technical solution executed by the network device in any of the above embodiments.

[0242] An embodiment of the present application may also provide a chip, including: a processing module and a communication interface, wherein the processing module can execute the technical solution executed by the terminal device in any of the above embodiments.

[0243] Furthermore, the chip also includes a storage module (such as a memory), the storage module is used to store instructions, the processing module is used to execute the instructions stored in the storage module, and the execution of the instructions stored in the storage module enables the chip to execute the technical solution executed by the terminal device in any of the above embodiments.

[0244] The embodiment of the present application may also provide a chip, including: a processing module and a communication interface, wherein the processing module can execute the technical solution executed by the network device in any of the above embodiments.

[0245] Furthermore, the chip also includes a storage module (such as a memory), the storage module is used to store instructions, the processing module is used to execute the instructions stored in the storage module, and the execution of the instructions stored in the storage module enables the chip to execute the technical solution executed by the network device in any of the above embodiments.

[0246] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the modules is only a logical function division. There may be other division methods in actual implementation, such as multiple modules can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the modules can be electrical, mechanical or other forms.

[0247] In the specific implementation of the above-mentioned reference signal processing device, it should be understood that the processor can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the present application can be directly embodied as being executed by a hardware processor, or can be executed by a combination of hardware and software modules in the processor.

[0248] All or part of the steps of the above-mentioned method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a readable memory. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the aforementioned memory (storage medium) includes: read-only memory (English: read-only memory, abbreviated as: ROM), RAM, flash memory, hard disk, solid state drive, magnetic tape (English: magnetic tape), floppy disk (English: floppy disk), optical disc (English: optical disc) and any combination thereof.

[0249] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A repeated transmission method, characterized in that: include: The terminal device processes the orthogonal frequency division multiplexing OFDM symbols of the N time slots according to the transmission parameters corresponding to the N time slots, respectively, wherein the transmission parameters corresponding to the N time slots are not completely the same, the N time slots correspond to the same transmission block TB or the same control information or the same signal, and N is an integer greater than 1; The transmission parameters include a reference signal configuration, and the reference signal configuration includes a reference signal frequency density; The N time slots are arranged in order from the 1st time slot to the Nth time slot, and the reference signal frequency density of the reference signal configuration of the 1st time slot is higher than the reference signal frequency density of the reference signal configuration of the Nth time slot.

2. The method according to claim 1, characterized in that: The transmission parameters corresponding to the N time slots are not completely the same, including: Among the N time slots, M time slots are used as a period, different time slots included in each period correspond to the same transmission parameters, and different time slots in adjacent periods correspond to different transmission parameters, where M is an integer greater than or equal to 1.

3. The method according to claim 1, characterized in that The transmission parameters corresponding to the N time slots are not completely the same, including: Among the N time slots, M time slots are used as a period, and the transmission parameters corresponding to different time slots included in each period are not completely the same, and in adjacent periods, time slots at the same position correspond to the same transmission parameters, where M is an integer greater than or equal to 1.

4. The method according to any one of claims 1 to 3, characterized in that: The transmission parameters corresponding to the N time slots are determined by the terminal device according to the configuration information.

5. The method according to claim 3, characterized in that: The method further comprises: The terminal device receives configuration information.

6. The method according to any one of claims 1 to 3, characterized in that: The transmission parameters corresponding to the N time slots are preset.

7. The method according to any one of claims 1 to 3, characterized in that: The transmission parameters also include: one or a combination of transmission power, time-frequency domain resources, and subcarrier spacing.

8. The method according to claim 7, characterized in that The reference signal configuration further includes: one or a combination of the number of reference signal symbols and the number of antenna ports.

9. The method according to claim 7, characterized in that: The terminal device processes the OFDM symbols of the N time slots according to the transmission parameters respectively corresponding to the N time slots, including: The terminal device performs transmission processing according to the transmission parameters corresponding to the N time slots respectively, to generate OFDM symbols of N time slots; The terminal device sends the OFDM symbols of the N time slots according to the transmission powers corresponding to the N time slots respectively.

10. The method according to claim 7, characterized in that The terminal device processes the OFDM symbols of the N time slots according to the transmission parameters respectively corresponding to the N time slots, including: The terminal device performs receiving processing according to the transmission parameters corresponding to the N time slots respectively, and obtains the transmission block TB or control information or signal carried by the OFDM symbols of the N time slots.

11. A repeated transmission method, characterized in that: include: The network device processes the orthogonal frequency division multiplexing OFDM symbols of the N time slots according to the transmission parameters corresponding to the N time slots, wherein the transmission parameters corresponding to the N time slots are not completely the same, the N time slots correspond to the same transmission block TB or the same control information or the same signal, and N is an integer greater than 1; the transmission parameters include a reference signal configuration, and the reference signal configuration includes a reference signal frequency density; the N time slots are sorted in order from the 1st time slot to the Nth time slot, and the reference signal frequency density of the reference signal configuration of the 1st time slot is higher than the reference signal frequency density of the reference signal configuration of the Nth time slot.

12. The method according to claim 11, characterized in that The transmission parameters corresponding to the N time slots are not completely the same, including: Among the N time slots, M time slots are used as a period, different time slots included in each period correspond to the same transmission parameters, and different time slots included in adjacent periods correspond to different transmission parameters, where M is an integer greater than or equal to 1.

13. The method according to claim 11, characterized in that The transmission parameters corresponding to the N time slots are not completely the same, including: Among the N time slots, M time slots are used as a period, and the transmission parameters corresponding to different time slots included in each period are not completely the same, and in adjacent periods, time slots at the same position correspond to the same transmission parameters, where M is an integer greater than or equal to 1.

14. The method according to any one of claims 11 to 13, characterized in that: The transmission parameters corresponding to the N time slots are configured by the network device.

15. The method according to claim 14, characterized in that The method further comprises: The network device sends configuration information.

16. The method according to any one of claims 11 to 13, characterized in that The transmission parameters corresponding to the N time slots are preset.

17. The method according to any one of claims 11 to 13, characterized in that The transmission parameters also include: one or a combination of transmission power, time-frequency domain resources, and subcarrier spacing.

18. The method according to claim 17, characterized in that The reference signal configuration further includes: one or a combination of the number of reference signal symbols and the number of antenna ports.

19. The method according to claim 17, characterized in that The network device processes the OFDM symbols of the N time slots according to the transmission parameters respectively corresponding to the N time slots, including: The network device performs transmission processing according to the transmission parameters corresponding to the N time slots respectively, to generate OFDM symbols of N time slots; The network device sends the OFDM symbols of the N time slots according to the transmission powers respectively corresponding to the N time slots.

20. The method according to claim 17, characterized in that The network device processes the OFDM symbols of the N time slots according to the transmission parameters respectively corresponding to the N time slots, including: The network device performs receiving processing according to the transmission parameters corresponding to the N time slots respectively, and obtains the transmission blocks TB or control information or signals carried by the OFDM symbols of the N time slots.

21. A terminal device, characterized in that: include: A processing module is used to process the orthogonal frequency division multiplexing OFDM symbols of the N time slots according to the transmission parameters corresponding to the N time slots, wherein the transmission parameters corresponding to the N time slots are not completely the same, the N time slots correspond to the same transmission block TB or the same control information or the same signal, and N is an integer greater than 1; the transmission parameter includes a reference signal configuration, and the reference signal configuration includes a reference signal frequency density; the N time slots are sorted in order from the 1st time slot to the Nth time slot, and the reference signal frequency density of the reference signal configuration of the 1st time slot is higher than the reference signal frequency density of the reference signal configuration of the Nth time slot.

22. The terminal device according to claim 21, characterized in that: The transmission parameters corresponding to the N time slots are not completely the same, including: Among the N time slots, M time slots are used as a period, different time slots included in each period correspond to the same transmission parameters, and different time slots in adjacent periods correspond to different transmission parameters, where M is an integer greater than or equal to 1.

23. The terminal device according to claim 21, characterized in that: The transmission parameters corresponding to the N time slots are not completely the same, including: Among the N time slots, M time slots are used as a period, and the transmission parameters corresponding to different time slots included in each period are not completely the same, and in adjacent periods, time slots at the same position correspond to the same transmission parameters, where M is an integer greater than or equal to 1.

24. The terminal device according to any one of claims 21 to 23, characterized in that: The transmission parameters corresponding to the N time slots are determined by the terminal device according to the configuration information.

25. The terminal device according to claim 23, characterized in that: The terminal device also includes: a transceiver module; the transceiver module is specifically used to receive configuration information.

26. The terminal device according to any one of claims 21 to 23, characterized in that: The transmission parameters corresponding to the N time slots are preset.

27. The terminal device according to any one of claims 21 to 23, characterized in that: The transmission parameters also include: one or a combination of transmission power, time-frequency domain resources, and subcarrier spacing.

28. The terminal device according to claim 27, characterized in that: The reference signal configuration further includes: one or a combination of the number of reference signal symbols and the number of antenna ports.

29. The terminal device according to claim 27, characterized in that: The processing module is specifically used to perform transmission processing according to the transmission parameters corresponding to the N time slots respectively, to generate OFDM symbols of N time slots; The transceiver module is also used to send the OFDM symbols of the N time slots according to the transmission powers respectively corresponding to the N time slots.

30. The terminal device according to claim 27, characterized in that: The processing module is specifically used to perform receiving processing according to the transmission parameters corresponding to the N time slots, and obtain the transmission blocks TB or control information or signals carried by the OFDM symbols of the N time slots.

31. A network device, characterized in that: include: A processing module is used to process the orthogonal frequency division multiplexing OFDM symbols of the N time slots according to the transmission parameters corresponding to the N time slots, wherein the transmission parameters corresponding to the N time slots are not completely the same, the N time slots correspond to the same transmission block TB or the same control information or the same signal, and N is an integer greater than 1; the transmission parameter includes a reference signal configuration, and the reference signal configuration includes a reference signal frequency density; the N time slots are sorted in order from the 1st time slot to the Nth time slot, and the reference signal frequency density of the reference signal configuration of the 1st time slot is higher than the reference signal frequency density of the reference signal configuration of the Nth time slot.

32. The network device according to claim 31, characterized in that: The transmission parameters corresponding to the N time slots are not completely the same, including: Among the N time slots, M time slots are used as a period, different time slots included in each period correspond to the same transmission parameters, and different time slots included in adjacent periods correspond to different transmission parameters, where M is an integer greater than or equal to 1.

33. The network device according to claim 31, characterized in that The transmission parameters corresponding to the N time slots are not completely the same, including: Among the N time slots, M time slots are used as a period, and the transmission parameters corresponding to different time slots included in each period are not completely the same, and in adjacent periods, time slots at the same position correspond to the same transmission parameters, where M is an integer greater than or equal to 1.

34. The network device according to any one of claims 31 to 33, characterized in that: The transmission parameters corresponding to the N time slots are configured by the network device.

35. The network device according to claim 34, characterized in that: The network device further comprises: a transceiver module; the transceiver module is used to send configuration information.

36. The network device according to any one of claims 31 to 33, characterized in that: The transmission parameters corresponding to the N time slots are preset.

37. The network device according to any one of claims 31 to 33, characterized in that: The transmission parameters also include: one or a combination of transmission power, time-frequency domain resources, and subcarrier spacing.

38. The network device according to claim 37, characterized in that: The reference signal configuration further includes: one or a combination of the number of reference signal symbols and the number of antenna ports.

39. The network device according to claim 37, characterized in that: The processing module is specifically used to perform transmission processing according to the transmission parameters corresponding to the N time slots respectively, to generate OFDM symbols of N time slots; The transceiver module is also used to send the OFDM symbols of the N time slots according to the transmission powers respectively corresponding to the N time slots.

40. The network device according to claim 37, characterized in that: The processing module is specifically used to perform receiving processing according to the transmission parameters corresponding to the N time slots, and obtain the transmission blocks TB or control information or signals carried by the OFDM symbols of the N time slots.

41. An electronic device, characterized in that: include: processor, memory, and interfaces for communicating with network devices; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method according to any one of claims 1 to 10.

42. An electronic device, characterized in that: include: Processor, memory, and interface for communicating with terminal equipment; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method according to any one of claims 11 to 20.

43. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 10 when executed by a processor.

44. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 11 to 20 when executed by a processor.

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