CN108270511B

CN108270511B - Method and device for transmitting data and method and device for receiving data

Info

Publication number: CN108270511B
Application number: CN201611262787.4A
Authority: CN
Inventors: 吕永霞; 马蕊香
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-12-30
Filing date: 2016-12-30
Publication date: 2020-06-26
Anticipated expiration: 2036-12-30
Also published as: WO2018121332A1; CN108270511A

Abstract

The embodiment of the invention provides a method and a device for sending data, wherein the method comprises the following steps: the method comprises the steps that a sending device sends first data to a receiving device on a first time-frequency resource, wherein the first data comprises a first bit in bits obtained after a first information block is coded; the sending equipment sends second data to the receiving equipment on a second time-frequency resource, the second data is determined according to information of a third time-frequency resource, the second data comprises a second bit in bits obtained after the first information block is coded, or the second data comprises a first modulation symbol in modulation symbols obtained after the first information block is coded and modulated, and the third time-frequency resource is part or all of the first time-frequency resource; the sending device receives feedback information aiming at the first information block from the receiving device, and the feedback information is obtained based on the result of the combined decoding of the first data and the second data, so that the time delay of data transmission can be reduced.

Description

Method and device for transmitting data and method and device for receiving data

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for transmitting data and a method and an apparatus for receiving data.

Background

There is known a feedback mechanism in which a receiving device needs to transmit feedback information determined according to a decoding result to a transmitting device after receiving data transmitted from the transmitting device (hereinafter, referred to as data # α for easy understanding and distinction), and when the receiving device fails in decoding, the transmitting device needs to retransmit the data # α according to the feedback information, thereby being capable of improving reliability of data transmission.

However, with the development of communication technology, some services, for example, Ultra-reliable/low latency communication ("URLLC"), have high requirements on transmission delay, in order to meet the requirements of the URLLC service on transmission delay, the URLLC service may perform transmission by occupying or multiplexing other allocated time-frequency resources for services (victim services) with low requirements on delay, as such, the sending device can know that the reliability of the transmission of the scheduled victim services is reduced due to the occupation or multiplexing of the URLLC service, taking the data of the data # α as an example, that is, although the sending device can determine that the probability of decoding failure of the data # α is very high, according to the existing feedback mechanism, the retransmission of the data # α still needs transmission based on feedback information, resulting in increased transmission delay of the data # α, and further reducing network throughput, and causing a reduced experience of the use of the victim services users.

It is therefore desirable to provide a technique that can reduce the latency of data transmission.

Disclosure of Invention

Embodiments of the present invention provide a method and an apparatus for sending data and a method and an apparatus for receiving data, which can reduce a time delay of data transmission.

In a first aspect, a method for transmitting data is provided, the method including: the method comprises the steps that a sending device sends first data to a receiving device on a first time-frequency resource, wherein the first data comprises a first bit in bits obtained after a first information block is coded; the sending device sends the second data to the receiving device on a second time-frequency resource, the second data is determined according to information of a third time-frequency resource, the second data comprises a second bit in bits obtained after the first information block is coded, or the second data comprises a first modulation symbol in modulation symbols obtained after the first information block is coded and modulated, and the third time-frequency resource is part or all of the first time-frequency resource; the sending device receives feedback information for the first information block from the receiving device, wherein the feedback information is obtained based on the result of the merged decoding of the first data and the second data.

According to the method for transmitting data of the embodiment of the invention, the transmitting device is enabled to transmit the first data and transmit the second data to the receiving device before receiving the feedback information of the first data, wherein the first data comprises all or part of bits after the first information block is coded, and the second data comprises all or part of bits after the first information block is coded, so that the receiving device can determine the feedback information of the first information block according to the result of the combined decoding of the first data and the second data, thereby improving the decoding success rate of the first information block, reducing the probability of retransmission, and further reducing the time delay of data transmission.

Optionally, the second data is determined according to one of a position of the third time-frequency resource and a size of the third time-frequency resource.

Optionally, the second data is determined according to information of the third time-frequency resource and at least one of a size of the second time-frequency resource and a position of the first time-frequency resource.

Optionally, the second data includes a second bit of bits obtained by encoding the first information block, and the second data is determined according to third data, where the third data is obtained by recovering a first modulation symbol by the sending device, the first modulation symbol belongs to a modulation symbol obtained by encoding and modulating the first information block, and the first modulation symbol is determined according to information of the third time-frequency resource.

Therefore, the second data can be determined based on the modulation symbols stored in advance, and the time delay of the process of determining the second data can be reduced, so that the practicability of the embodiment of the invention is further improved.

Optionally, the second data includes a second bit of the bits obtained by encoding the first information block, and the second data is determined according to a mapping manner of the bits obtained by encoding the first information block on the first time-frequency resource and information of the third time-frequency resource.

Therefore, the implementation modes of the sending equipment and the receiving equipment are simplified, and the equipment implementation complexity is reduced.

Optionally, the second data includes a second bit of bits obtained by encoding the first information block, and the second data includes a coding block CB or a CB group to which a bit corresponding to the third time-frequency resource belongs.

Optionally, the sending device sends the second data on a second time-frequency resource, including: the sending device sends the second data and fourth data on a second time-frequency resource, wherein the fourth data comprises bits obtained by coding the second information block.

Optionally, the method further comprises: the sending device sends first indication information to the receiving device, wherein the first indication information is used for indicating the third time frequency resource; or the sending device receives second indication information from the receiving device, where the second indication information is used to indicate the third time-frequency resource.

Optionally, the third time-frequency resource is a time-frequency resource in which a received signal-to-noise ratio of a signal carried in the first time-frequency resource is less than or equal to a preset first threshold, or the third time-frequency resource is a time-frequency resource in which a transmission power of a signal carried in the first time-frequency resource satisfies a preset first condition, or the third time-frequency resource is a time-frequency resource in which the first bit is not carried in the first time-frequency resource, or the third time-frequency resource is a time-frequency resource in which data other than the first bit is carried in the first time-frequency resource.

Optionally, before the sending device sends the second data to the receiving device on the second time-frequency resource, the method further includes: the sending device determines the second data according to at least one of the position of the third time-frequency resource and the size of the third time-frequency resource.

Optionally, before the sending device sends the second data to the receiving device on the second time-frequency resource, the method further includes: the sending device determines the second data according to the information of the third time frequency resource and at least one of the size of the second time frequency resource and the position of the first time frequency resource.

Optionally, the second data includes a second bit of the bits obtained by encoding the first information block, and before the sending device sends the second data to the receiving device on the second time-frequency resource, the method further includes: the sending equipment determines a first modulation symbol according to the information of the third time-frequency resource, wherein the first modulation symbol belongs to a modulation symbol obtained after the first information block is coded and modulated; the transmitting device recovers the first modulation symbol to obtain third data, and the transmitting device determines the second data according to the third data.

Optionally, the second data includes a second bit of the bits obtained by encoding the first information block, and before the sending device sends the second data to the receiving device on the second time-frequency resource, the method further includes: and determining the second data by the sending equipment according to the mapping mode of the bits obtained by coding the first information block on the first time-frequency resource and the information of the third time-frequency resource.

Optionally, the second data includes a second bit of the bits obtained by encoding the first information block, and before the sending device sends the second data to the receiving device on the second time-frequency resource, the method further includes: the sending equipment determines a coding block CB or a CB group to which a bit corresponding to the third time frequency resource belongs according to the third time frequency resource; the transmitting device takes the coded block CB or CB group as the second data.

Optionally, in the bits to be transmitted corresponding to the second time-frequency resource, the bits corresponding to the second data are located before the bits corresponding to the fifth data.

Optionally, the second bit comprises part or all of the first bit.

Optionally, a preset time domain position relationship exists between the position of the second time frequency resource in the time domain and the position of the first time frequency resource in the time domain.

Optionally, the position of the second time-frequency resource on the frequency domain is the same as the position of the first time-frequency resource on the frequency domain.

Optionally, the second data comprises data configured on the third time-frequency resource; or the second data comprises data configured on a fourth time-frequency resource, the size of the fourth time-frequency resource is the same as the size of the third time-frequency resource, and the fourth time-frequency resource is located at the end of the first time-frequency resource.

In a second aspect, a method of receiving data is provided, the method comprising: receiving first data on a first time-frequency resource by receiving equipment, wherein the first data comprises a first bit in bits obtained by coding a first information block; the receiving device receives second data on a second time-frequency resource, the second data is determined according to a third time-frequency resource, the second data includes a second bit of bits obtained after the first information block is coded, or the second data includes a first modulation symbol of modulation symbols obtained after the first information block is coded and modulated, and the third time-frequency resource is a partial resource of the first time-frequency resource; the receiving device carries out merging decoding on the first data and the second data; the receiving device determines feedback information aiming at the first information block according to the result of the merging decoding; the receiving device sends the feedback information to the sending device.

Optionally, the receiving device performs merging decoding on the first data and the second data, including: the receiving equipment determines data to be processed from the first data according to the third time-frequency resource; the receiving equipment determines the merging position of the second data and the data to be processed according to the third time-frequency resource; and the receiving equipment carries out merging and decoding on the first data and the data to be processed according to the merging position.

Optionally, the determining, by the receiving device, to-be-processed data from the first data according to the third time-frequency resource includes: the receiving device writes the first data into a first memory; the receiving device sets the bit information corresponding to the third time frequency resource in the first memory to zero; the receiving device takes the data stored in the first memory as the data to be processed.

Optionally, the determining, by the receiving device, to-be-processed data from the first data according to the third time-frequency resource includes: the receiving device carries out removal processing on the first data so as to remove bit information corresponding to the third time-frequency resource in the first data; the receiving device takes the first data after the removing process as the data to be processed.

Optionally, the receiving device receives second data on a second time-frequency resource, including: the receiving device receives second data and fourth data on a second time-frequency resource, wherein the fourth data comprises bits obtained by encoding a second information block.

Optionally, the method further comprises: the receiving device receives first indication information from the sending device, wherein the first indication information is used for indicating the third time-frequency resource; or the receiving device sends second indication information to the sending device, where the second indication information is used to indicate the third time-frequency resource.

Optionally, in the bits to be decoded corresponding to the second time-frequency resource, the bits corresponding to the second data are located before the bits corresponding to the fifth data.

Optionally, the second bit comprises part or all of the first bit.

In a third aspect, a method for receiving data is provided, the method comprising: the terminal equipment receives first data from the network equipment on a first time-frequency resource, wherein the first data comprises a first bit in bits obtained by coding a first information block; the terminal device receives second data from the network device on a second time-frequency resource, wherein the second data comprises a second bit of bits obtained by coding the first information block; the terminal equipment receives control information sent by the network equipment, wherein the control information is used for indicating a third time-frequency resource in the first time-frequency resource; the terminal equipment carries out removal processing on the first data so as to remove bit information corresponding to the third time-frequency resource in the first data, and writes the first data subjected to the removal processing into a first memory; or the terminal device writes the first data into a first memory, and sets bit information corresponding to the third time-frequency resource in the first memory to zero; the terminal equipment carries out merging decoding on the second data and the data in the first memory.

With reference to the third aspect, in a first implementation manner of the third aspect, the performing, by the terminal device, merging and decoding the second data and the data in the first memory includes: the terminal device receives second control information from the network device, the second control information indicating a merging position of the second data with the data in the first memory; and the terminal equipment carries out merging decoding on the second data and the data in the first memory according to the merging position.

With reference to the third aspect and the foregoing implementation manner of the third aspect, in a second implementation manner of the third aspect, the combining position is determined based on the position of the third time-frequency resource and the position of the first time-frequency resource.

In a fourth aspect, an apparatus for transmitting data is provided to perform the method of the first aspect and any possible implementation manner of the first aspect, and in particular, the apparatus for transmitting data may include means for performing the method of the first aspect and any possible implementation manner of the first aspect.

In a fifth aspect, an apparatus for receiving data is provided, which is configured to perform the method of the second aspect and any possible implementation manner of the second aspect, and in particular, the apparatus for receiving data may include a unit configured to perform the method of the second aspect and any possible implementation manner of the second aspect.

In a sixth aspect, an apparatus for receiving data is provided, where the apparatus is configured to perform the method in any one of the possible implementations of the third aspect and the third aspect, and in particular, the apparatus for receiving data may include means for performing the method in any one of the possible implementations of the third aspect and the third aspect.

In a seventh aspect, an apparatus for sending data is provided, which includes a memory and a processor, where the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the apparatus for sending data performs the method in the first aspect and any possible implementation manner of the first aspect.

In an eighth aspect, there is provided an apparatus for receiving data, comprising a memory for storing a computer program and a processor for calling and running the computer program from the memory, so that the apparatus for receiving data performs the method of the second aspect and any possible implementation manner of the second aspect.

In a ninth aspect, there is provided a terminal device, comprising a memory for storing a computer program and a processor for calling and running the computer program from the memory so that the terminal device performs the method of any one of the possible implementations of the third aspect and the third aspect.

In a tenth aspect, there is provided a computer program product comprising: computer program code which, when executed by a communication unit, a processing unit or a transceiver, processor of a transmitting device, causes the transmitting device to perform the method of the first aspect or any of its possible implementations.

In an eleventh aspect, there is provided a computer program product comprising: computer program code which, when run by a communication unit, a processing unit or a transceiver, a processor of a receiving device, causes the receiving device to perform the method of the second aspect or any of its possible implementations.

In a twelfth aspect, there is provided a computer program product comprising: computer program code which, when run by a communication unit, a processing unit or a transceiver, a processor of a terminal device, causes the terminal device to perform the method of the third aspect or any of its possible implementations.

In a thirteenth aspect, there is provided a computer-readable storage medium storing a program for causing a transmitting apparatus to execute the method of the first to fourth aspects or any one of the possible implementations of the first to fourth aspects.

In a fourteenth aspect, there is provided a computer-readable storage medium storing a program for causing a receiving apparatus to execute the method of the first to fourth aspects or any one of the possible implementations of the first to fourth aspects.

In a fifteenth aspect, a computer-readable storage medium is provided, which stores a program that causes a terminal device to execute the method of the first to fourth aspects or any possible implementation manner of the first to fourth aspects.

Drawings

Fig. 1 is a schematic architecture diagram of a communication system to which a method and apparatus for transmitting data and a method and apparatus for receiving data according to an embodiment of the present invention are applied.

Fig. 2 is a schematic interaction diagram of an example of a transmission process of data (including first data and second data) according to an embodiment of the present invention.

Fig. 3 is a diagram illustrating an example of a first time/frequency resource according to an embodiment of the invention.

Fig. 4 is a diagram illustrating an example of a second time-frequency resource according to an embodiment of the present invention.

Fig. 5 is a schematic diagram of another example of the second time-frequency resource according to the embodiment of the invention.

Fig. 6 is a diagram illustrating another example of a second time-frequency resource according to an embodiment of the present invention.

Fig. 7 is a diagram illustrating another example of a second time-frequency resource according to an embodiment of the present invention.

Fig. 8 is a diagram illustrating an example of a mapping manner of bits # a scheduled by a network device on a time-frequency resource # a according to an embodiment of the present invention.

Fig. 9 is a diagram illustrating an example of a mapping manner of a bit # a-1 actually transmitted by a transmitting device through a time frequency resource # a on the time frequency resource # a according to an embodiment of the present invention.

Fig. 10 is a schematic diagram illustrating another example of a mapping manner of the bit # a-1 actually transmitted by the transmitting device through the time frequency resource # a on the time frequency resource # a according to the embodiment of the present invention.

Fig. 11 is a diagram showing an example of second data according to the embodiment of the present invention.

Fig. 12 is a diagram illustrating another example of second data according to the embodiment of the present invention.

Fig. 13 is a diagram illustrating still another example of second data according to an embodiment of the present invention.

Fig. 14 is a diagram illustrating still another example of the second data according to the embodiment of the present invention.

FIG. 15 is a diagram showing an example of data # B in the embodiment of the present invention.

FIG. 16 is a diagram showing another example of data # B in the embodiment of the present invention.

Fig. 17 is a diagram illustrating an example of a mapping manner of data # B on time-frequency resource # a (e.g., time-frequency resource # C or time-frequency resource # D) according to an embodiment of the invention.

Fig. 18 is a diagram illustrating an example of a mapping manner of data # B on time-frequency resource # B according to an embodiment of the present invention.

Fig. 19 is a diagram illustrating an example of the size of the time-frequency resource # B in the embodiment of the present invention.

Fig. 20 is a diagram illustrating another example of the size of the time-frequency resource # B according to the embodiment of the invention.

FIG. 21 is a diagram illustrating an example of a merge decoding method according to an embodiment of the present invention.

FIG. 22 is a diagram illustrating another example of a merging decoding method according to an embodiment of the present invention.

FIG. 23 is a diagram illustrating another example of a merging decoding method according to an embodiment of the present invention.

Fig. 24 is a schematic interaction diagram of another example of a transmission process of data (including first data and second data) according to an embodiment of the present invention.

Fig. 25 is a schematic block diagram of an example of an apparatus for transmitting data according to an embodiment of the present invention.

Fig. 26 is a schematic block diagram of another example of an apparatus for transmitting data according to an embodiment of the present invention.

Fig. 27 is a schematic block diagram of an example of a terminal device of the embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and/or thread of execution and a component can be localized on one computer and/or distributed between 2 or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with another component in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).

It should be understood that embodiments of the present invention may be applied to various communication systems, such as: a global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE) System, an Advanced Long Term Evolution (LTE-a) System, a Universal Mobile Telecommunications System (UMTS) System, or a next-generation communication System, etc.

Generally, conventional Communication systems support a limited number of connections and are easy to implement, however, with the development of Communication technology, mobile Communication systems will support not only conventional Communication but also, for example, Device-to-Device (D2D) Communication, Machine-to-Machine (M2M) Communication, Machine Type Communication (MTC) and Vehicle-to-Vehicle (V2V) Communication.

The embodiments of the present invention have been described in conjunction with a transmitting device and a receiving device, where:

for example, the sending device may be one of a network device and a terminal device, and the receiving device may be the other of the network device and the terminal device; alternatively, the transmitting device may be a terminal device, and the receiving device may be a network device.

For another example, the transmitting device may be one terminal device, and the receiving device may be another terminal device.

A terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User Equipment. The terminal device may be a Station (ST) in a Wireless Local Area Network (WLAN), and may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, 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, and a next-generation communication system, such as a terminal device in a fifth-generation communication (5G) Network or a terminal device in a future-evolution Public Land Mobile Network (PLMN) Network, and the like.

By way of example, and not limitation, in embodiments of the present invention, the terminal device may also be a wearable device. Wearable equipment can also be called wearable intelligent equipment, is the general term of applying wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.

Furthermore, various embodiments of the present invention are described in connection with a network device. The network device may be a device such as a network device for communicating with a mobile device, and the network device may be an ACCESS POINT (AP) in a WLAN, a Base Transceiver Station (BTS) in GSM or CDMA, a Base Station (NodeB) in WCDMA, an evolved Node B (eNB) in LTE, a relay Station or an ACCESS POINT, or a network device in a vehicle-mounted device, a wearable device, a future 5G network, or a network device in a future evolved PLMN network.

In addition, in this embodiment of the present invention, a network device provides a service for a cell, and a terminal device communicates with the network device through a transmission resource (for example, a frequency domain resource or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (for example, a base station), and the cell may belong to a macro base station or a base station corresponding to a small cell (small cell), where the small cell may include: urban cells (Metro cells), Micro cells (Micro cells), Pico cells (Pico cells), Femto cells (Femto cells), and the like, and the small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-rate data transmission services.

In addition, multiple cells can simultaneously work at the same frequency on a carrier in an LTE system or a 5G system, and under some special scenes, the concepts of the carrier and the cells can also be considered to be equivalent. For example, in a Carrier Aggregation (CA) scenario, when configuring a secondary carrier for a UE, the secondary carrier may simultaneously carry a carrier index of the secondary carrier and a Cell identity (Cell identity, Cell ID) of a secondary Cell operating on the secondary carrier, and in this case, it may be considered that the concepts of the carrier and the Cell are equivalent, for example, it is equivalent that the UE accesses one carrier and one Cell.

The method and the device provided by the embodiment of the invention can be applied to terminal equipment or network equipment, and the terminal equipment or the network equipment comprises a hardware layer, an operating system layer running on the hardware layer and an application layer running on the operating system layer. The hardware layer includes hardware such as a Central Processing Unit (CPU), a Memory Management Unit (MMU), and a Memory (also referred to as a main Memory). The operating system may be any one or more computer operating systems that implement business processing through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer comprises applications such as a browser, an address list, word processing software, instant messaging software and the like. In the embodiment of the present invention, a specific structure of an execution main body of a method for transmitting control information is not particularly limited in the embodiment of the present invention, as long as communication can be performed by the method for transmitting control information according to the embodiment of the present invention by running a program in which a code of the method for transmitting control information according to the embodiment of the present invention is recorded, for example, the execution main body of the method for wireless communication according to the embodiment of the present invention may be a terminal device or a network device, or a functional module capable of calling a program and executing the program in the terminal device or the network device.

Moreover, various aspects or features of embodiments of the invention may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein is intended to encompass a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media can include but are not limited to magnetic storage devices (e.g., hard disk, floppy disk, magnetic strips, etc.), optical disks (e.g., Compact disk ("CD"), digital versatile disk ("DVD"), etc.), smart cards, and flash Memory devices (e.g., Erasable Programmable Read-Only Memory ("EPROM"), card, stick, or key drive, etc.). In addition, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

Taking an existing communication system such as an LTE system as an example, in the prior art, the LTE system supports a hybrid automatic Repeat reQuest (HARQ) mechanism, and data transmission is divided into initial transmission (initial transmission) and retransmission (re-transmission). The initial transmission and the retransmission may be scheduled by a downlink physical control channel (PDCCH). For downlink data transmission as an example, the network device sends a PDCCH to the terminal device to schedule initial transmission of downlink data, and after detecting the initial transmission PDCCH, the terminal device receives the initial transmission, decodes the initial transmission according to the received initial transmission data, and feeds back a decoding result to the sending device. If the decoding result is failure and the network device correctly receives the feedback signal from the terminal device, the network device may send a PDCCH for scheduling retransmission to the terminal device. And after detecting the retransmission PDCCH, the terminal equipment receives the retransmission, decodes according to the received initial transmission data and retransmission data, and feeds back a decoding result to the sending equipment. The uplink data transmission is similar to the downlink data transmission. That is, in each transmission, no matter initial transmission or retransmission, the receiving device feeds back the receiving result to the receiving device after receiving the transmission data and completing the corresponding decoding. And the sending device will schedule retransmission after confirming that the decoding fed back by the receiving device fails.

A trend of communication systems is to use more and more complex networking methods, such as a hybrid network of macro base stations and small base stations, allowing different duplexing methods to be used in the same frequency band or adjacent frequency bands, etc. this is to improve the spectrum utilization efficiency, so as to better utilize limited spectrum resources, under such a trend, the situation that radio signals experience uneven interference during actual transmission becomes more and more obvious, for example, actual transmission of data # α is strongly interfered (data # α is affected) (for convenience, this scenario is named as scenario #1), but the interfered portion only occupies a small portion of data # α (the small portion corresponds to the affected time-frequency resources), on the other hand, with the development of communication technologies and the new requirements of radio communication for living and industrial uses that are gradually developed in real life, the types of services that a future communication system can support will become more and more diversified, the requirements of some emerging services for transmission latency are significantly higher than those of conventional services, for example, Ultra-low-reliability latency communication (radio-latency/industrial use) and the requirements of only mobile services for mobile services (e.g. llc # 3929, llc #3, which is a higher multiplexing method).

If the existing retransmission mechanism based on feedback is adopted, the sending device needs to know that the decoding of the receiving device fails and then retransmits the data # α according to the feedback information, so that the transmission delay of the data # α is obviously increased under the condition that only a small part of the data is affected.

The data sending and receiving method provided by the embodiment of the invention aims to solve the problems of how to efficiently save the affected small part of data and effectively reduce the transmission delay of the affected data # α.

Fig. 1 is a schematic diagram of a wireless communication system of an embodiment of the present invention. As shown in fig. 1, the communication system 100 includes a network device 102, and the network device 102 may include 1 antenna or multiple antennas, e.g.,

antennas

104, 106, 108, 110, 112, and 114. Additionally, network device 102 can additionally include a transmitter chain and a receiver chain, each of which can comprise a plurality of components associated with signal transmission and reception (e.g., processors, modulators, multiplexers, demodulators, demultiplexers, antennas, etc.), as will be appreciated by one skilled in the art.

Network device 102 may communicate with a plurality of terminal devices, such as terminal device 116 and terminal device 122. However, it is understood that network device 102 may communicate with any number of terminal devices similar to terminal device 116 or terminal device 122.

End devices

116 and 122 may be, for example, cellular phones, smart phones, laptops, handheld communication devices, handheld computing devices, satellite radios, global positioning systems, PDAs, and/or any other suitable device for communicating over wireless communication system 100.

As shown in fig. 1, terminal device 116 is in communication with

antennas

112 and 114, where

antennas

112 and 114 transmit information to terminal device 116 over a forward link (also called a downlink) 118 and receive information from terminal device 116 over a reverse link (also called an uplink) 120. In addition, terminal device 122 is in communication with

antennas

104 and 106, where

antennas

104 and 106 transmit information to terminal device 122 over forward link 124 and receive information from terminal device 122 over reverse link 126.

In a Frequency Division Duplex (FDD) system, forward link 118 can utilize a different Frequency band than reverse link 120, and forward link 124 can employ a different Frequency band than reverse link 126, for example.

As another example, in Time Division Duplex (TDD) systems and full Duplex (fullblex) systems, forward link 118 and reverse link 120 may use a common frequency band and forward link 124 and reverse link 126 may use a common frequency band.

Each antenna (or group of antennas consisting of multiple antennas) and/or area designed for communication is referred to as a sector of network device 102. For example, antenna groups may be designed to communicate to terminal devices in a sector of the areas covered by network device 102. A network device may transmit signals to all terminal devices in its corresponding sector through single-antenna or multi-antenna transmit diversity. During communication by network device 102 with

terminal devices

116 and 122 over

forward links

118 and 124, respectively, the transmitting antennas of network device 102 may also utilize beamforming to improve signal-to-noise ratio of

forward links

118 and 124. Moreover, mobile devices in neighboring cells can experience less interference when network device 102 utilizes beamforming to transmit to

terminal devices

116 and 122 scattered randomly through an associated coverage area, as compared to a manner in which the network device transmits signals to all of its terminal devices through single-antenna or multi-antenna transmit diversity.

At a given time, network device 102, terminal device 116, or terminal device 122 may be a wireless communication transmitting apparatus and/or a wireless communication receiving apparatus. When sending data, the wireless communication sending device may encode the data for transmission. Specifically, the wireless communication transmitting device may obtain (e.g., generate, receive from other communication devices, or save in memory, etc.) a number of data bits to be transmitted over the channel to the wireless communication receiving device. Such data bits may be contained in a transport block (or transport blocks) of data, which may be segmented to produce multiple code blocks.

In addition, the communication system 100 may be a PLMN network, a D2D network, an M2M network, or other networks, and fig. 1 is a simplified schematic diagram for example, and other network devices may be included in the network, which are not shown in fig. 1.

In the embodiment of the present invention, data may be carried by time-frequency resources, where the time-frequency resources may include resources in a time domain and resources in a frequency domain. In the time domain, the time-frequency resource may include one or more time-domain units, and in the frequency domain, the time-frequency resource may include a frequency-domain unit.

One time domain unit may be one symbol, or one Mini slot (Mini-slot), or one slot (slot), or one subframe (subframe), where the duration of one subframe in the time domain may be 1 millisecond (ms), one slot may be composed of 7 or 14 symbols, and one Mini slot may include at least one symbol (e.g., 2 symbols or 7 symbols or 14 symbols, or any number of symbols less than or equal to 14 symbols).

A frequency domain unit may be a resource block rb, (resource block), or a group of resource blocks rbg, (resource block group), or a predefined Subband (Subband).

In the embodiment of the present invention, "data" may be understood as bits generated after the information block is encoded, or "data" may be understood as modulation symbols generated after the information block is encoded and modulated.

One information Block may include at least one Transport Block (TB), or "one information Block may include at least one TB group (including at least one TB), or" one information Block may include at least one Code Block (CB "), or" one information Block may include at least one CB group (including at least one CB), and so on.

It should be understood that the specific form of the information block listed above is only an exemplary illustration, the present invention is not particularly limited, and other data partitioning units that can be the target of coded modulation fall within the protection scope of the present invention. Hereinafter, for convenience of understanding and explanation, the specific procedure of data transmission of the present invention will be described in detail with TB as an information block.

In the embodiment of the present invention, a plurality of information blocks (taking TB as an example) may be transmitted between the transmitting device and the receiving device, and the transmission process of each TB is similar, and for easy understanding, the following description will be given taking the process of transmitting the TB # a between the transmitting device and the receiving device as an example.

In addition, in the embodiment of the present invention, the TB # a may be that the network device needs to send to the terminal device, that is, the TB # a may be downlink data.

Alternatively, the TB # a may be a data that the terminal device needs to transmit to the network device, i.e., the TB # a may be uplink data.

Still alternatively, the TB # a may be transmitted between two terminal devices, i.e., the TB # a may be D2D, M2M, or V2V communication data.

Fig. 2 shows a schematic interaction diagram of a method 200 of transmitting data for TB # a between a transmitting device and a receiving device.

At S210, the transmitting device may transmit data # a (i.e., an instance of the first data) to the receiving device at time-frequency resource # a (i.e., an instance of the first time-frequency resource).

For example, when the transmitting device is a network device, the network device may autonomously determine the time-frequency resource # a and transmit information of the time-frequency resource # a to a terminal device (i.e., a receiving device) through control information (e.g., downlink control information).

For another example, when the sending device is a terminal device, the terminal device may receive control information (e.g., downlink control information, hereinafter, referred to as control information # a for easy understanding and distinction) indicating the time-frequency resource # a from the network device, and determine the time-frequency resource # a according to the control information.

In the embodiment of the present invention, the time-frequency resource # a may be a time-frequency resource scheduled by the control information # a, and the time-frequency resource # a may be a time-frequency resource allocated to the TB # a by the network device.

Specifically, in the embodiment of the present invention, the transmitting device may perform processing such as encoding on TB # a to generate a plurality of bits #1 (i.e., an example of bits obtained by encoding the first information block). Some or all of the bits #1 (hereinafter, referred to as bit # a for ease of understanding and explanation) are allocated to the time-frequency resource # a.

Fig. 3 is a diagram illustrating an example of a first time/frequency resource according to an embodiment of the invention. As shown in fig. 3, the time-frequency resource # a may include a time-frequency resource # C (i.e., an example of a third time-frequency resource). The time frequency resource # C may be a part of the time frequency resource # a, or the time frequency resource # C may also be all of the time frequency resources # a, which is not particularly limited in the present invention.

Wherein the time frequency resource # C may be an affected time frequency resource.

In the embodiment of the present invention, the "affected time-frequency resource" may include the following meanings:

meaning 1, the affected time-frequency resource may not carry the data required to be carried, wherein the "data required to be carried" may refer to the data to which the affected time-frequency resource is allocated (or scheduled).

For example, the affected time-frequency resource may be allocated (e.g., by the network device in a scheduling manner such as control information) to service # a (e.g., eMBB service), but the affected time-frequency resource is used for service # B (e.g., URLLC service) in a scheduling period in which the affected time-frequency resource is allocated to service # a.

For another example, the affected time-frequency resource may be allocated to the terminal device # a (e.g., by the network device through a scheduling manner such as control information), but in the scheduling period in which the affected time-frequency resource is allocated to the terminal device # a, the affected time-frequency resource is used for carrying data of the terminal device # B.

Meaning 2. the affected time frequency resource can also carry other data besides the data which needs to be carried. The "data to be carried" may refer to data to which the affected time-frequency resource is allocated (or scheduled).

For example, the affected time-frequency resource may be allocated to the service # C (e.g., by the network device through a scheduling manner such as control information), but the affected time-frequency resource is used for both the service # C and the service # D in a scheduling period in which the affected time-frequency resource is allocated to the service # C.

For another example, the affected time-frequency resource may be allocated to the terminal device # C (e.g., by the network device through a scheduling manner such as control information), but in the scheduling period in which the affected time-frequency resource is allocated to the terminal device # C, the affected time-frequency resource is used for carrying data of both the terminal device # C and the terminal device # B.

Meaning 3, the affected time frequency resource may be a time frequency resource in which a signal-to-noise ratio (e.g., an average signal-to-noise ratio of a signal) of the carried signal is less than or equal to a preset signal-to-noise ratio threshold, that is, data transmission on the affected time frequency resource is interfered with more interference, which is not favorable for demodulation and decoding of data on the affected time frequency resource, or the probability of successful demodulation and decoding of data on the affected time frequency resource is low. By way of example and not limitation, the signal-to-noise threshold may be, for example, -3dB or-6 dB. Also, the snr threshold may be specified by the communication system or communication, or the snr threshold may be determined by the network device and sent to the terminal device via signaling, e.g., higher layer signaling.

Meaning 4, the affected time-frequency resource may be that the transmission power of the carried signal satisfies a preset condition, for example, the transmission power of the signal carried by the affected time-frequency resource is greater than a power threshold # a of the average power (or greater than a power threshold of the specified power), or the transmission power of the signal carried by the affected time-frequency resource is less than a power threshold # B of the average power (or less than a power threshold of the specified power). By way of example and not limitation, power threshold # a may be, for example, 6 dB. Also, the power threshold # a may be communication system or communication defined, or the power threshold # a may be determined by the network device and transmitted to the terminal device through, for example, higher layer signaling. The power threshold # B may be, for example, -3 dB. Also, the power threshold # B may be specified by the communication system or communication, or the power threshold # a may be determined by the network device and transmitted to the terminal device through signaling, for example, higher layer signaling.

It should be understood that the above-listed meaning of "affected time-frequency resource" is only an exemplary illustration, and the transmitting device or the receiving device may determine the time-frequency resource # β as "affected time-frequency resource" as long as the transmitting device or the receiving device can determine (e.g., through control information) the usage manner or usage process of the time-frequency resource (hereinafter, for convenience of distinction, denoted as: time-frequency resource # β) scheduled to a certain data (hereinafter, for convenience of distinction, denoted as: data # β) may cause the decoding success rate of the data # β to be lower than the target probability (e.g., may be specified by the communication system or the communication protocol, and may also be predetermined by the network device).

In the following, an exemplary description is given to a method and a process for determining the time-frequency resource # C (i.e., the third time-frequency resource) in the embodiment of the present invention.

In the embodiment of the present invention, for example, when the meaning of the affected time-frequency resource is the above-mentioned meaning 1, meaning 2, or meaning 4, the sending device can determine which resources in the time-frequency resource # a are affected (i.e., the sending device can determine the time-frequency resource # C), and the sending device can send the indication information of the time-frequency resource # C to the receiving device through Indicator #1 (i.e., an example of the first indication information), so that the receiving device can determine the affected time-frequency resource (i.e., the time-frequency resource # C) in the time-frequency resource # a based on the Indicator # 1.

For another example, when the meaning of the affected time-frequency resource is the meaning 2 or the meaning 3, the receiving device can determine which resources in the time-frequency resource # a are affected (i.e., the transmitting device can determine the time-frequency resource # C), and the receiving device can transmit the indication information of the time-frequency resource # C to the receiving device through Indicator #2 (i.e., an example of the second indication information), so that the transmitting device can determine the affected time-frequency resource (i.e., the time-frequency resource # C) in the time-frequency resource # a based on the Indicator # 2.

In some cases, in order to save the indication overhead of Indicator #1 and Indicator #2, the indication of Indicator #1 and Indicator #2 to time-frequency resource # C may be rough, for example, the time-frequency resources specifically indicated by Indicator #1 and Indicator #2 may be larger than time-frequency resource # C or smaller than time-frequency resource # C, or the time-frequency resources specifically indicated by Indicator #1 and Indicator #2 may include all time-frequency resources # C or a part of time-frequency resources # C. It is to be understood that the invention is not limited thereto.

It should be further understood that the above-listed method for determining the time-frequency resource # C is only an exemplary illustration, and the present invention is not limited thereto, and other methods and processes that enable the transmitting device and the receiving device to determine whether a certain time-frequency resource satisfies the determination condition of the "affected time-frequency resource" (e.g., the above meaning of the "affected time-frequency resource") and further determine whether the time-frequency resource is the "affected time-frequency resource" are within the protection scope of the present invention.

By way of example and not limitation, in the embodiment of the present invention, the affected time-frequency resources may also be determined in the following manner.

For example, if the affected resource is downlink resource and downlink transmission, and the indication information of the time-frequency resource # C (i.e., an example of the first indication information or the second indication information, which is hereinafter referred to as an Indicator) is sent to the terminal device by the network device, the terminal device may detect downlink control information of the scheduling supplemental transmission (i.e., transmission of the second data) (where the downlink control information may be used to indicate that the feedback information for the first information block needs to be generated based on a combined decoding result of the first data and the second data, and is referred to as control information # B), and then may read the Indicator to obtain a position of the corresponding affected resource, or may read the Indicator first and then monitor the downlink control information of the scheduling supplemental transmission.

Since the downlink control information and the Indicator are both physical control channels, the terminal device may miss the downlink control information or the Indicator transmitted by the scheduling.

If downlink transmission of a terminal device is affected, and the terminal device fails to detect downlink control information transmitted by scheduling or an Indicator from a network device, the terminal device may introduce a signal that does not belong to the terminal device into a decoding process, which results in decoding failure. This effect may also affect subsequent retransmission decoding, since the presence of the portion of the signal that is not self-contained is not known.

In contrast, in the method of the present invention, the network device may determine whether the terminal device fails to detect the Indicator by the following method.

Method 1, using different ACK/NACK feedback resources, that is, scheduling the original transmission (for example, the transmission of data # a scheduled by control information # a on time frequency resource # a, hereinafter referred to as transmission # a) and the time frequency resource of feedback ACK/NACK for complementary transmission of downlink data signal included in the complementary transmitted physical downlink control information (for example, control information # B) are different, and the network device determines whether the terminal device correctly receives the complementary transmission scheduling by feeding back ACK/NACK on different time frequency resources by the terminal device. Different time-frequency resources correspond to different HARQ messages.

And 2, using DAI, namely scheduling that DAI positions of ACK/NACK (acknowledgement/negative acknowledgement) used for feedback contained in original transmission and supplementary transmission physical downlink control information are different, namely in the same HARQ feedback message, the positions of A/N bits corresponding to the original transmission and the supplementary transmission in the HARQ feedback message are different, and judging whether the terminal equipment correctly receives the supplementary transmission scheduling or not by the network equipment through the ACK/NACK fed back by the terminal equipment at different positions in the HARQ feedback message. The same HARQ feedback message means that it is jointly coded and modulated and transmitted using the same time-frequency resource.

In addition, in the implementation method of the present invention, when the network device determines that the terminal device fails to detect the Indicator, the network device may instruct the terminal device to discard the received data corresponding to the affected transmission by using the following method.

Method 3, use special indication information (e.g. indication information # S), i.e. in the subsequent retransmission scheduling, the network device uses special indication information in the downlink physical control information to indicate that the terminal device has the affected resource in the previous transmission or a certain transmission of the same part of original data (e.g. TB # a) in the same HARQ process.

The terminal is affected in the transmission, the terminal device does not detect that the transmission is affected before, and the indication information # S is used for indicating the terminal device to discard the received signal corresponding to the affected transmission in the subsequent merging and decoding, so that the signal which does not belong to the terminal device is prevented from being introduced into the decoding.

The terminal is not affected in the transmission, but the terminal device considers that the transmission is affected by detecting an Indicator before, and the indication information # S is used for indicating the terminal device to use the transmission signal for normal merging and decoding.

More specifically, the indication information # S, may be composed of N bits, N being associated with the maximum number of retransmissions. In another example, the indication information # S contains only one bit, and the bit flipping (i.e. the transition between bit 0 and bit 1) indicates whether the last transmission was affected.

For example, the network device confirms that the terminal device erroneously receives/decodes Indicator or physical downlink control information transmitted in a scheduling complement manner or erroneously receives/decodes Indicator and physical downlink control information transmitted in a scheduling complement manner through scheduling the terminal device at different time-frequency resources or at different positions of the same HARQ message (i.e., method 1 and method 2), so that the network device can use a special field or use another field to notify the terminal device that the resource used for transmission at a certain time is affected in the subsequently scheduled retransmission DCI, that is, the method 3 is used to reduce the influence of erroneously receiving or decoding the Indicator and/or the physical downlink control information on the downlink signal reception of the terminal device.

For another example, if the affected is downlink resource and downlink transmission, and the Indicator is sent to the terminal device by the network device or is detected by the network device itself (there is no Indicator at this time, the network device directly schedules supplementary transmission and indicates the affected time-frequency resource in the supplementary transmission scheduling), the network device schedules the terminal device to supplementary transmit the uplink signal, but does not receive the supplementary transmission of the uplink signal. The network device may determine that the terminal device cannot correctly receive or interpret an Indicator sent to the terminal device by the network device or schedule uplink supplementary physical downlink control information. The network device may schedule retransmission again or directly schedule retransmission, and the uplink signal corresponding to the affected resource is not used in subsequent combining and decoding.

If the affected uplink resource and uplink transmission are uplink resources and uplink transmission, and the Indicator is sent to the network device by the terminal device, the network device does not schedule the terminal device to supplement the corresponding uplink signal, and the terminal device can send physical uplink control information to the network device, so as to indicate which uplink resource used by the network device for uplink transmission is affected.

As described above, the transmitting device and the receiving device can determine the affected time-frequency resource # C in the time-frequency resource # a.

Moreover, as described above, the time frequency resource # a is a time frequency resource scheduled by the network device to carry the bit #1, and therefore, in the embodiment of the present invention, the existence of the time frequency resource # C may cause transmission of some or all bits in the bit #1 to be affected (e.g., unable to transmit or low in decoding success rate).

That is, in the embodiment of the present invention, the bit # a includes two parts, that is, a bit that can be normally transmitted without being affected by the presence of the time-frequency resource # C (i.e., an example of a first bit, hereinafter, referred to as bit # a-1 for easy understanding and distinction), and a bit that cannot be normally transmitted without being affected by the presence of the time-frequency resource # C (i.e., an example of a second bit, hereinafter, referred to as bit # a-2 for easy understanding and distinction).

At S220, the transmitting device may determine data # B (i.e., an instance of the second data) from the data corresponding to the bits # a-2, and transmit the data # B to the receiving device at the time-frequency resource # B (i.e., an instance of the second time-frequency resource).

In the embodiment of the present invention, the transmission of the Indicator may be performed before the transmission of the second data, or the transmission of the Indicator may be performed after the transmission of the second data, and the present invention is not particularly limited.

First, a method and a process for determining the time-frequency resource # B will be described in detail.

By way of example and not limitation, for example, as shown in fig. 4 and 5, in the embodiment of the present invention, the time-frequency resource # B may be notified to a terminal device (e.g., the other one of the transmitting device or the receiving device) through control information (e.g., downlink control information) by a network device (e.g., one of the transmitting device or the receiving device).

For another example, as shown in fig. 6 and fig. 7, in the embodiment of the present invention, the time frequency resource # B and the time frequency resource # a may have a mapping relationship preset (e.g., specified by a communication system or a communication protocol), so that the transmitting device and the receiving device may determine the time frequency resource # B based on the mapping relationship.

By way of example and not limitation, in embodiments of the present invention, the "mapping relationship" may include: the time frequency resource # B may be the P (K ≧ 1) available time domain unit in the Kth (K ≧ 1) available scheduling period (hereinafter, for ease of understanding and distinction, denoted as the scheduling period # B) after the scheduling period in which the time frequency resource # A is located (hereinafter, for ease of understanding and distinction, denoted as the scheduling period # A).

Wherein the scheduling period may include, by way of example and not limitation, a transmission time interval TTI or a short transmission time interval sTTI, and the time domain unit may include a subframe, a slot, a mini-slot, a symbol, or the like.

Also, for example, as shown in fig. 4, in the embodiment of the present invention, the control information may indicate that the time-frequency resource # B is only used for carrying data # B.

Alternatively, for example, as shown in fig. 5, in the embodiment of the present invention, the control information may indicate that the time-frequency resource # B may be used to carry other data (for example, data # D, which is an example of fourth data) in addition to carrying data # B.

Specifically, in the embodiment of the present invention, the data # D may be some or all of the bits obtained by encoding (e.g., channel encoding) the TB # B (i.e., an example of the second information block). It should be understood that the above-listed determination manner of the data # D is only an exemplary illustration, and the present invention is not limited thereto, and for example, the data # D may further include bits obtained by encoding TBs other than the TB # B and the TB # a.

Alternatively, in the embodiment of the present invention, the data # D may belong to the bit #1, and for example, the data # D may be retransmission data of the bit # a-1.

In summary, in the embodiment of the present invention, the use of the time-frequency resource # B may include the following ways:

mode 1: the time-frequency resource # B is used only to carry data # B (or, bit # a-2).

Mode 2: the time-frequency resource # B is used to carry data # B and data # D, where the information block (e.g., TB # B) to which the data # D belongs is different from the information block (e.g., TB # a) to which the data # a belongs, or the HARQ process corresponding to the data # D is different from the HARQ process corresponding to the TB # a.

Mode 3: the time-frequency resource # B is used to carry data # B and data # D, where the data # D is retransmission data of bit # a-1, that is, the HARQ process corresponding to the data # D is the same as the HARQ process corresponding to the TB # a.

Hereinafter, the determination method and process of the data # B are explained as an example.

In the embodiment of the present invention, the data # B may be determined based on the information of the time-frequency resource # C.

By way of example and not limitation, in the embodiment of the present invention, the following two cases exist for the effect of the time-frequency resource # C on the position of the bit # a-2 in the bit # a. In addition, the method and process for determining the data # B based on the time-frequency resource # C are different in different cases, and the method and process for determining the data # B based on the time-frequency resource # C in the above two cases will be described in detail below.

As shown in fig. 8, it is assumed that bit # a includes bits 1 to 7, and bits 1 to 7 are allocated in the time domain unit shown in fig. 8.

As shown in fig. 8, the time-frequency resource # C is a time domain unit to which

bits

4 and 6 are allocated.

Case A

As shown in fig. 9, in the embodiment of the present invention, the bit # a-2 may be a bit to which the time-frequency resource # C is allocated (or scheduled), or the bit # a-2 may be a bit scheduled to be transmitted through the time-frequency resource # C, for example, bit 4 and bit 6.

Also, in this case, the bit # a-1 may be bit 1, bit 2, bit 3, bit 5, and bit 7.

In this case,

bits

4 and 6 are data corresponding to time-frequency resource # C.

In this case, in the embodiment of the present invention, the transmitting apparatus may determine the data # B in the following manner.

Mode A-1

In this embodiment of the present invention, when transmitting the bit # a (or the data # a) through the time-frequency resource # a, for example, the transmitting device may encode and modulate and map the bit # a (i.e., the bit 1 to the bit 7) to generate the modulation symbol # a, and for convenience of understanding and explanation, the modulation symbols corresponding to the bit 1 to the bit 7 are assumed to be the modulation symbol # a1 to the modulation symbol # a7, respectively.

It should be noted that, in the embodiment of the present invention, based on, for example, scheduling of a network device, the modulation symbols # a 1- # a7 have a one-to-one mapping relationship with time domain units of the time-frequency resource # a, for example, as shown in fig. 8, the modulation symbols # a 1- # a7 correspond to the time domain units in which corresponding bits (i.e., bits 1-7) are located, respectively.

Also, the transmitting device may store modulation symbol # a1 through modulation symbol # a7 in a memory. The storage order of the modulation symbols # a 1- # a7 in the memory may correspond to the mapping relationship of the modulation symbols # a 1- # a7 on the time-frequency resource # a (specifically, each time domain unit of the time-frequency resource # a). Thus, when the transmitting device determines time frequency resource # C, the affected data, i.e., bit # a-2, can be determined based on the location of time frequency resource # C in time frequency resource # a (or the relative location of time frequency resource # C and time frequency resource # a), and the mapping relationship.

Alternatively, the transmitting device may store the above mapping relationship and regenerate modulation symbols # a1 through # a7 if necessary.

As shown in fig. 9, in the scheme a-1, the bit # a-2 is a modulation symbol # a4 and a modulation symbol # a6 corresponding to the time-frequency resource # C.

Thus, the transmitting device can determine data # B from modulation symbol # a4 and modulation symbol # a 6.

For example, the transmitting apparatus may treat modulation symbol # a4 and modulation symbol # a6 as data # B.

For another example, the transmitting device may determine the size of time frequency resource # B and determine data # B from modulation symbol # a4 and modulation symbol # a6 according to the size of time frequency resource # B.

For example, if the size of time-frequency resource # B is sufficient to carry both modulation symbol # a4 and modulation symbol # a6, the transmitting device may treat modulation symbol # a4 and modulation symbol # a6 as data # B.

For example, if only one of modulation symbol # a4 and modulation symbol # a6 can be carried by time-frequency resource # B, the transmitting device may treat one of modulation symbol # a4 and modulation symbol # a6 as data # B

For example, if only one of the modulation symbol # a4 and the modulation symbol # a6 and a portion of the other of the time-frequency resource # B can be carried, the transmitting device may treat one of the modulation symbol # a4 and the modulation symbol # a6 and a portion of the other as data # B.

Further, the transmitting device determining data # B based on modulation symbol # a4 and modulation symbol # a6 may further include processing modulation symbol # a4 and modulation symbol # a6, e.g., modulation symbol interleaving, and determining data # B based on processed modulation symbol # a4 and modulation symbol # a 6.

Next, a process of processing the data # B in the embodiment of the present invention will be exemplarily described. For example, the rectangle shown in fig. 17 is the affected resource (an example of time-frequency resource # C), wherein the numbered square represents the data corresponding to time-frequency resource # C (an example of the above modulation symbol # a4 and modulation symbol # a 6). The numbering sequence is the mapping sequence of the modulation symbols when the device on the network schedules transmission on time frequency resource # a (transmission on time frequency resource # C), or in other words, the modulation symbols with smaller sequence numbers in the figure are mapped to time frequency resource # C first. It can be seen that the modulation symbols in the figure are written into the time frequency resource # C in the order of first column and second row. When determining the data # B based on the time frequency resource # C (or the data corresponding to the time frequency resource # C), the transmitting device reads the data corresponding to the time frequency resource # C in a direction opposite to the writing direction, for example, as indicated by an arrow in the figure, and writes the extracted modulation symbol sequence into the time frequency resource # B (a second time frequency resource instance). Fig. 18 shows an example of time frequency resource # B, in which the size of time frequency resource # B is equal to the number of (data) modulation symbols corresponding to time frequency resource # C, and the transmitting device can directly write the read modulation symbol sequence into time frequency resource # B. Fig. 19 shows another example of the time-frequency resource # B, in which the size of the time-frequency resource # B is larger than the number of (data) modulation symbols corresponding to the time-frequency resource # C, the sending device may directly write the read modulation symbol sequence into the time-frequency resource # B in sequence, and after the end of the modulation symbol sequence, if there are available REs in the time-frequency resource # B, the sending device continues to write the modulation symbols into the remaining REs in the time-frequency resource # B from the start position of the modulation symbol sequence. The modulation symbols written to time-frequency resource # B constitute data # B. Fig. 20 shows another example of the time frequency resource # B, in which the size of the time frequency resource # B is smaller than the number of (data) modulation symbols corresponding to the time frequency resource # C, the sending device may directly write the read modulation symbol sequences into the time frequency resource # B in sequence, and the modulation symbols that cannot be written are not sent. The modulation symbols written to time-frequency resource # B constitute data # B. Wherein the available REs refer to REs used for transmitting data on the resources.

It should be understood that the above-listed processing procedure (e.g., interleaving processing procedure) for the data # B is only an exemplary illustration, and the present invention is not limited thereto, for example, other methods for interleaving modulation symbols fall within the protection scope of the embodiments of the present invention.

Mode A-2

Also, the transmitting device may store modulation symbol # a1 through modulation symbol # a7 in memory. The storage order of the modulation symbols # a 1- # a7 in the memory may correspond to the mapping relationship of the modulation symbols # a 1- # a7 on the time-frequency resource # a (specifically, each time domain unit of the time-frequency resource # a). Thus, when the transmitting device determines time frequency resource # C, the affected data, i.e., bit # a-2, can be determined based on the location of time frequency resource # C in time frequency resource # a (or the relative location of time frequency resource # C and time frequency resource # a), and the mapping relationship.

As shown in fig. 9, in the scheme a-2, the bit # a-2 is a modulation symbol # a4 and a modulation symbol #6 corresponding to the time-frequency resource # C.

Thus, the transmitting device may determine the bits for modulation symbol # a4 and modulation symbol # a7, e.g., the transmitting device may recover

bits

4 and 6 from modulation symbol # a4 and modulation symbol # a 6. The recovery operations include demodulation mapping, descrambling, etc. of modulation symbol # a4 and modulation symbol # a 6. .

Further, the transmitting device may determine data # B from bit 4 and bit 6.

Or, for example, the transmitting device may take bit 4 and bit 6 as data # B.

As another example, the transmitting device may determine the size of time frequency resource # B and determine data # B from

bits

4 and 6 according to the size of time frequency resource # B.

For example, if the size of the time-frequency resource # B is sufficient to carry both bits 4 and 6 (or modulation symbols after modulation of bits 4 and 6), the transmitting device may treat

bits

4 and 6 as data # B.

For example, if only one of bits 4 and 6 (or modulation symbols after modulation of bits 4 and 6) can be carried by the time-frequency resource # B, the transmitting device may use the one of

bits

4 and 6 as the data # B.

For example, if only one of bits 4 and 6 (or modulation symbols after modulation of bits 4 and 6) and a part of the other of the time-frequency resources # B can be carried, the transmitting apparatus may treat one of

bits

4 and 6 and a part of the other as data # B.

In the process of scrambling the complementary transmission data, the time domain unit serial number where the complementary transmission time-frequency resource is located and/or the id (identification) serial number of the terminal device (such as the sending device or the receiving device) involved in the complementary transmission are used as scrambling parameters. To avoid redundancy, the description of the same or similar cases is omitted below.

And, thereafter, the transmitting apparatus may perform processing such as interleaving, scrambling, and modulation on the data # B to generate modulation symbols # a4 'and modulation symbols # a 6', and generate a transmission signal from the processed data # B.

The modulation schemes of modulation symbol # a4 'and modulation symbol # a 6' may be the same as or different from the modulation schemes of modulation symbol # a4 and modulation symbol #6, and the present invention is not particularly limited.

In the process of confirming the data # B, how to adjust the content of the data # B according to the size of the time frequency resource # B and the size of the (data) modulation symbol corresponding to the time frequency resource # C may refer to the method a-1, which is not described herein again.

Mode A-3

In the embodiment of the present invention, the data # B may be a bit.

Specifically, the transmitting device may store bits 1 to 7 in memory.

It should be noted that, in the embodiment of the present invention, based on, for example, scheduling of a network device, bits 1 to 7 have a one-to-one mapping relationship with each time domain unit of the time-frequency resource # a, for example, as shown in fig. 8, bits 1 to 7 respectively correspond to the time domain units where they are located.

Thus, in the embodiment of the present invention, the storage order of bits 1 to 7 in the memory may correspond to the mapping relationship of bits 1 to 7 on the time-frequency resource # a (specifically, each time domain unit of the time-frequency resource # a).

Thus, when the transmitting device determines time frequency resource # C, the affected data, i.e., bit # a-2, can be determined based on the location of time frequency resource # C in time frequency resource # a (or the relative location of time frequency resource # C and time frequency resource # a), and the mapping relationship.

Or, the sending device may store the mapping relationship, and read bit 1 to bit 7 from a Soft buffer (Soft buffer) according to the mapping relationship if necessary. The soft buffer is a memory used by the transmitting device to store the encoded bits (e.g., bit # 1).

As shown in fig. 9, in the mode a-3, the bit # a-2 is the bit 4 and the bit 6 corresponding to the time frequency resource # C.

Further, the transmitting device may determine data # B from bit 4 and bit 6.

Or, for example, the transmitting device may take bit 4 and bit 6 as data # B.

bits

4 and 6 according to the size of time frequency resource # B.

bits

4 and 6 as data # B.

bits

4 and 6 as the data # B.

bits

4 and 6 and a part of the other as data # B.

And, thereafter, the transmitting apparatus may process the data # B, for example, interleaving, scrambling, and modulation, to generate modulation symbols # a4 'and modulation symbols # a 6'.

Next, a method for the transmitting device to determine the data # B from the Soft Buffer in the embodiment of the present invention will be described in detail with reference to fig. 11 to 14.

In the embodiment of the present invention, the bit # a (e.g., including bits in CB #1 to CB #3) is stored in the cache corresponding to CB #1 to CB #3, in which case, the bit # a-2 may be located in the cache corresponding to CB #1 to CB #3, respectively.

The storage position of each bit of the bit # A including the bit # A-2 in the cache corresponding to the CB #1 to the CB #3 has a mapping relation with the mapping position of each bit of the bit # A including the bit # A-2 on the time frequency resource # A.

Therefore, the transmitting device can determine the bit # A-2 from the cache corresponding to CB #1 to CB #3 according to the position of the time frequency resource # C in the time frequency resource # A. Thereafter, the transmitting device may determine data # B based on bit # A-2 and the size of time-frequency resource # B. For example, as shown in fig. 11, if the size of the time-frequency resource # B is equal to or approximately equal to the size of the resource required for the bit # a-2, the transmitting apparatus may treat all bits of the bit # a-2 as the data # B.

For another example, as shown in fig. 12, if the size of the time-frequency resource # B is larger than the size of the resource required for the bit # a-2, the transmitting device may use all bits of the bit # a-2 and other data stored in the buffers corresponding to the bits CB #1 to CB #3 (i.e., data other than the bit # a in the bit #1, hereinafter, referred to as bit #1-B for ease of understanding and distinction) as the data # B. By way of example and not limitation, the bit # A-3 may be a bit adjacent to bit # A stored in a cache corresponding to the CB #1 to CB # 3.

For another example, as shown in fig. 13 or fig. 14, if the size of the time-frequency resource # B is smaller than the size of the resource required for the bit # a-2, the transmitting apparatus may treat a part of the bits of the bit # a-2 as the data # B.

That is, in the embodiment of the present invention, the sending device may first determine the number of bits that need to be retransmitted according to the number of REs used for carrying data in the affected resource (e.g., time-frequency resource # C) and the modulation scheme adopted in the original transmission, and then determine the number of bits that can be retransmitted according to the number of REs used for carrying data in the retransmission time-frequency resource (e.g., time-frequency resource # B) and the new modulation scheme.

As shown in fig. 11, if the number of bits that can be retransmitted is equal to the number of bits that need to be retransmitted, the sending device extracts the bits that have not been retransmitted in the original transmission from the soft buffer, modulates the bits by using a new modulation method, and maps the bits to the time-frequency resources used for retransmission.

As shown in fig. 12, if the number of bits that can be complemented is greater than the number of bits that need to be complemented, the sending device takes out bits that have not been complemented in the original transmission from the soft buffer, then averages the number of bits that are added to each affected CB and takes out the corresponding average number of bits from the original transmission end position, and finally scrambles the bit sequence that has been taken out, modulates the bit sequence using a new modulation method, and maps the bit sequence to the time-frequency resource used for complementing transmission.

As shown in fig. 13, if the number of bits that can be retransmitted is less than the number of bits that need to be retransmitted, the sending device first determines the number of bits that are not to be retransmitted, averages the small number of bits to each affected CB at the end, and removes the corresponding average number of bits from the predetermined end position of the original transmission in the opposite direction, and then the sending device extracts the bits that are not to be retransmitted in the original transmission except the "removed bits" from the soft buffer, modulates the bits by using a new modulation method, and maps the bits to the time-frequency resources used for retransmission. As shown in fig. 13, the tails of CB #1 and CB #2 are affected, so the reduced number of bits is averaged after this two coded blocks. This is done to take into account that discarding transmission bits in the middle of a coding block has a greater impact on decoding performance than discarding transmission bits from the end of the coding block. Therefore, discarding the bits to be transmitted after the code block with the affected tail is more favorable for improving the reliability of the receiving device for combining the original received data and the complement data to demodulate and decode.

As shown in fig. 14, when the number of bits that need to be discarded for a coding block (CB #1) is greater than the number of bits that need to be retransmitted, the transmitting apparatus does not transmit any more bits for the coding block in this retransmission. The remaining number of discarded bits, except for the code block primary complement transport bits, is averaged over the remaining end affected code blocks (CB # 2).

If the standard specifies that the network device can respectively indicate modulation modes for transmission blocks which relate to complementary transmission of more than one transmission block, the sending device can respectively determine the complementary transmission bit number according to the time-frequency resource and the modulation mode of each transmission block, and implement the method to determine the bits to be complementary transmitted. For example, still taking fig. 11 as an example, the network device instructs this retransmission to use Layer two (Layer) transmission, where CB #1 and CB #2 are mapped on the first Layer and 16QAM is used for modulation, and CB #3 is mapped on the second Layer and QPSK is used for modulation, then CB #1 and CB #2 confirm retransmission data according to the number of REs available in the first Layer by the time-frequency resource # B and the 16QAM modulation scheme, and CB #3 confirms retransmission data according to the number of REs available in the second Layer by the time-frequency resource # B and the QPSK modulation scheme. Data # B includes complement data of CB #1, CB #2, and CB # 3. If there is no retransmission scheduling indication information (for example, there is a preset mapping relationship between the time frequency resource # B and the time frequency resource # a) or no new soft buffer reading start position, for example, a redundancy version number, is indicated in the retransmission scheduling indication information, referring to the above explanation, the sending device uses the start position of the untransmitted bit in the original transmission of each confirmed retransmission CB in the soft buffer as the start position of retransmission (for example, the examples shown in fig. 11, 12, 13, and 14). When the bit number to be discarded by a coding block (CB #1 in fig. 14) is greater than the bit number to be complemented, the transmitting device does not transmit the bit of the coding block in the current complementary transmission, and the CB is not confirmed as the CB of the current complementary transmission.

In another case, if a new soft buffer reading start position, for example, a redundancy version symbol, is indicated in the scheduling indication information, reading is started from the newly indicated position, and the reading length is determined according to the size of the complementary transmission time-frequency resource and the modulation scheme. And then, scrambling and modulating the bit sequence read in the soft buffer by adopting the same method as the original transmission method, and mapping the bit sequence to a complementary transmission time frequency resource (such as time frequency resource # B). More specifically, the network device indicates an example of redundancy version for data # B transmission, the network device indicates a redundancy version number for data # B, and the content read from the redundancy version location includes part or all of bit a-2 corresponding to time-frequency resource # C.

It should be understood that the above-listed method and process for determining the data # B according to the time-frequency resource # C are only exemplary, and the present invention is not limited thereto, for example, in the embodiment of the present invention, the data # B may be all data carried in the CB (or the CB group) to which the time-frequency resource # C belongs. For example, as shown in fig. 15, the data carried by the time-frequency resource # C is REs 1-18, and the data # B is data on the coding block to which the REs 1-18 belong, that is, the data # B is data on coding block 2, coding block 3, and coding block 4.

That is, as shown in fig. 15, in the embodiment of the present invention, in the allocated resource of one terminal device, 4 coded blocks are carried. The mapping method of the coding blocks in the figure is along the frequency domain first and then along the time domain, which is only taken as an example and not a limitation of the present invention. As can be seen from fig. 15, the affected resource relates to 3 coding blocks, namely coding block 2, coding block 3 and coding block 4.

In this case, the complementary transmission may transmit all CBs or CB groups corresponding to the time-frequency resource # C, the communication standard may also predefine or configure a threshold through high-layer signaling, and when the percentage of the affected data bits exceeding the content bits of the whole CB and CB groups in the transmission is greater than the threshold, the CB or CB groups are transmitted in the complementary transmission.

In the embodiment of the present invention, the bit # B may also be a part of the data in the bit # a or a part of the data in the bit # a and data other than the bit # a, which is not limited by the present invention.

Case B

As shown in fig. 10, in the embodiment of the present invention, the bit # a-2 may be a bit allocated (or scheduled) to a time-frequency resource (hereinafter, for convenience of understanding and distinction, denoted as time-frequency resource # D) located at a predetermined position (for example, at the end of time-frequency resource # a) in the time-frequency resource # a and having the same size as the time-frequency resource # C, or the bit # a-2 may be a bit scheduled to be transmitted through the time-frequency resource # D, for example, bit 6 and bit 7.

By way of example and not limitation, in the embodiment of the present invention, the size of the time-frequency resource may refer to: the time-frequency resource comprises a number of particles (e.g., a smallest partition unit of the time-frequency resource, e.g., RE, specified by the communication system or communication protocol).

Also, in this case, the bit # a-1 may be bit 1, bit 2, bit 3, bit 4, and bit 5.

In this case, bit 6 and bit 7 are data corresponding to time-frequency resource # C.

Mode B-1

Also, the transmitting device may store modulation symbol # a1 through modulation symbol # a7 in memory. The storage order of the modulation symbols # a 1- # a7 in the memory may correspond to the mapping relationship of the modulation symbols # a 1- # a7 on the time-frequency resource # a (specifically, each time domain unit of the time-frequency resource # a).

Thus, when the transmitting device determines time frequency resource # C, time frequency resource # D may be determined from time frequency resource # a based on the size of time frequency resource # C, and the transmitting device may determine the affected data, i.e. bit # a-2, according to the location in time frequency resource # a of time frequency resource # D (or the relative location of time frequency resource # D and time frequency resource # a) and the mapping relationship.

As shown in fig. 10, in the scheme B-1, the bit # a-2 is a modulation symbol # a6 and a modulation symbol # a7 corresponding to the time-frequency resource # D.

Thus, the transmitting device can determine data # B from modulation symbol # a6 and modulation symbol # a 7.

For example, the transmitting apparatus may treat modulation symbol # a7 and modulation symbol # a7 as data # B.

For another example, the transmitting device may determine the size of time frequency resource # B and determine data # B from modulation symbol # a7 and modulation symbol # a7 according to the size of time frequency resource # B.

For example, if the size of time-frequency resource # B is sufficient to carry both modulation symbol # a7 and modulation symbol # a7, the transmitting device may treat modulation symbol # a7 and modulation symbol # a7 as data # B.

For example, if only one of the modulation symbol # a7 and the modulation symbol # a7 can be carried by the time-frequency resource # B, the transmitting apparatus may treat one of the modulation symbol # a7 and the modulation symbol # a7 as data # B.

For example, if only one of the modulation symbol # a4 and the modulation symbol # a6 and a portion of the other of the time-frequency resource # B can be carried, the transmitting device may treat one of the modulation symbol # a4 and the modulation symbol # a6 and a portion of the other as data # B. Mode B-2

Thus, when the transmitting device determines time-frequency resource # C, time-frequency resource # D may be determined based on the size of time-frequency resource # C, and the affected data, i.e., bit # a-2, may be determined based on the position of time-frequency resource # D in time-frequency resource # a (or the relative position of time-frequency resource # D and time-frequency resource # a), and the mapping relationship.

As shown in fig. 10, in the scheme B-2, the bit # a-2 is a modulation symbol # a6 and a modulation symbol #7 corresponding to the time-frequency resource # C.

Thus, the transmitting device may determine the bits for modulation symbol # a6 and modulation symbol # a7, e.g., the transmitting device may recover

bits

4 and 6 from modulation symbol # a6 and modulation symbol # a 7. The recovery operations include demodulation mapping, descrambling, etc. of modulation symbol # a4 and modulation symbol # a 6.

Further, the transmitting device may determine data # B from bit 6 and bit 7.

Alternatively, for example, the transmitting apparatus may take bit 6 and bit 7 as data # B.

bits

6 and 7 according to the size of time frequency resource # B.

For example, if the size of the time-frequency resource # B is sufficient to carry both bits 6 and 7 (or modulation symbols after modulation of bits 6 and 7), the transmitting device may treat

bits

6 and 7 as data # B.

For example, if only one of bit 6 and bit 7 (or modulation symbols after bit 6 and bit 7 modulation) can be carried by the time-frequency resource # B, the transmitting device may use the one of bit 6 and bit 7 as the data # B.

bits

4 and 6 and a part of the other as data # B.

And, thereafter, the transmitting apparatus may process the data # B, for example, interleaving, scrambling, and modulation, to generate modulation symbols # a6 'and modulation symbols # a 7'.

The modulation schemes of modulation symbol # a6 'and modulation symbol # a 7' may be the same as or different from the modulation schemes of modulation symbol # a6 and modulation symbol #7, and the present invention is not particularly limited.

Mode B-3

In the embodiment of the present invention, the data # B may be a bit.

Specifically, the transmitting device may store bits 1 to 7 in the memory.

Or, the sending device may store the mapping relationship, and read bit 1 to bit 7 from a Soft buffer (Soft buffer) according to the mapping relationship if necessary.

As shown in fig. 10, in the mode a-3, the bit # a-2 is the bit 6 and the bit 7 corresponding to the time frequency resource # C.

Further, the transmitting device may determine data # B from bit 6 and bit 7.

bits

6 and 7 according to the size of time frequency resource # B.

bits

6 and 7 as data # B.

bits

4 and 6 and a part of the other as data # B.

Then, the transmitting apparatus may perform processing such as interleaving, scrambling, and modulation on the data # B to generate modulation symbols # a6 'and modulation symbols # a 7'.

The method and procedure for the sending device to determine the data # B from the Soft Buffer in the case B may be similar to the method and procedure for the sending device to determine the data # B from the Soft Buffer in the case a, for example, as shown in fig. 11 to fig. 14, and here, the detailed description is omitted for avoiding redundancy.

It should be understood that the above-listed method and process for determining data # B according to time-frequency resource # C are only exemplary, and the present invention is not limited thereto, for example, as shown in fig. 16, when the time-frequency resource # C is affected, each coding block may be mapped in a sequential order in a manner of avoiding being carried on the time-frequency resource # C, so that the data affected by the time-frequency resource # C (i.e., REs 1-18) may be data located in the same CB.

In the embodiment of the present invention, the modulation method used by the data # B during transmission (i.e., complementary transmission) through the time-frequency resource # B may be the same as or different from the modulation method used by the data # B during transmission (i.e., original transmission) through the time-frequency resource # a, and the present invention is not particularly limited.

The method includes that when a bit sequence or a bit subsequence cannot divide a new modulation order by a new modulation order, a sending device obtains a new modulation symbol number by dividing the length of the bit sequence by the new modulation order, and adds (new modulation order × -original bit subsequence or original bit sequence length) space bits before or after the bit sequence or the bit subsequence to form a new bit sequence or a bit subsequence, and modulates the new bit sequence or the bit subsequence to generate a modulation symbol sequence to be sent.

In the embodiment of the present invention, when a signal carried on an affected resource is missing, or a signal carried on an affected resource is interfered more strongly than signals on other resources, the demodulation reliability of the entire uplink signal or downlink signal is reduced accordingly. Therefore, if the transmission signal is a downlink signal, the network device will complement the terminal device with the part of the signal; if the transmission signal is an uplink signal, the network device may schedule the terminal device to complement the transmission signal.

When implementing the complementary transmission of the affected signals using the new resources, how to map the transmission signals including part or all of the affected signals onto the new time-frequency resources is a problem to be solved by the present invention.

The following describes an exemplary resource mapping manner of the data # B on the time-frequency resource # B in the embodiment of the present invention.

As described above, in the embodiment of the present invention, the data determined based on the time-frequency resource # C (or the time-frequency resource # D) may be a modulation symbol or a bit.

When the data determined based on the time-frequency resource # C (or the time-frequency resource # D) is a modulation symbol, in the embodiment of the present invention, the sending device may first restore the data (modulation symbol) corresponding to the time-frequency resource # C to a bit, and then generate a new modulation symbol sequence through scrambling.

Optionally, the transmitting device may also bit interleave the recovered bit sequence prior to scrambling. By way of example and not limitation, row and column interleaving may be employed for specific bit interleaving.

Or the sending device may perform symbol interleaving on the modulation symbol corresponding to the time-frequency resource # C, recover to a bit, perform interference again, and regenerate a new modulation symbol sequence. By way of example and not limitation, row and column interleaving may be employed for specific symbol interleaving.

And then the sending equipment maps the new modulation symbol sequence to the time frequency resource # B according to a mapping method of non-supplementary transmission data predefined by the communication protocol. The mapping method of the non-complementary transmission data predefined by the communication protocol comprises a mapping method of multilayer time-frequency resources and a mapping sequence of single-layer time-frequency resources (for example, a frequency domain is firstly and a time domain is secondly, and the like). The mapping method of non-complementary transmission data may be similar to the method and process in the prior art, and a detailed description thereof is omitted here for redundancy. The examples given in fig. 17-20 above are one example of resource mapping after using a symbol interleaver here. The mapping method has the advantages that if the number of available REs of the supplementary transmission resource (time frequency resource # B) is smaller than that of the available REs of the original transmission time frequency resource (for example, the time frequency resource # A used by the transmission # A), the influence of modulation symbols which cannot be sent on the reduction of the demodulation and decoding reliability of the receiving end can be commonly borne by all affected coding blocks or coding block groups, and the probability of correct demodulation and decoding of all the coding blocks or coding block groups is improved; if the number of RE available for retransmission resources is greater than the number of RE available for original transmission, the effect of modulation symbols that cannot be sent on the improvement of demodulation and decoding reliability of the receiving end can be benefited by all affected coding blocks or coding block groups, so that the probability of correct demodulation and decoding of all coding blocks or coding block groups is improved better.

Furthermore, in this method, if the number of layers used for complementary transmission is the same as the number of layers used for the original transmission. The embodiments shown in fig. 17-20 may be performed separately at each layer. In this case, the sequence numbers of the complementary transmission layers may correspond to the sequence numbers of the original transmission layers one by one, for example, the

original layer numbers

1, 2, 3, 4 correspond to the complementary

transmission layer numbers

1, 2, 3, 4; the layer numbers of the complementary transmission and the original transmission layer numbers can also be changed, for example, the

original layer numbers

1, 2, 3 and 4 correspond to the complementary

transmission layer numbers

2, 3, 4 and 1. The benefit of keeping the layer number unchanged is that the device implementation complexity or device processing latency can be reduced. The layer number conversion has the advantage that transmission signals of different layers can be subjected to different transmission channels, so that diversity gain is obtained to increase the demodulation and decoding reliability of the transmission signals at the receiving end.

In addition, in the above method, if the number of transport blocks carried by the time-frequency resource # C is greater than 1, each transport block may correspond to an original modulation symbol sequence, and the above method is implemented respectively.

When the data determined based on the time-frequency resource # C (or the time-frequency resource # D) is a bit, the sending device may first determine the number of bits that need to be retransmitted according to the number of available REs in the time-frequency resource # C and the original modulation mode of the data # a, and then determine the number of bits (corresponding to the data # B) that can be retransmitted according to the number of available REs in the time-frequency resource # B and the new modulation mode of the data # B. And then the sending equipment takes out the bit data from the soft buffer according to the method for determining the data # B, generates a modulation symbol sequence by adopting a new modulation mode and maps the modulation symbol sequence to the time frequency resource # B according to a mapping method of non-supplementary transmission data predefined by a communication protocol.

If the standard specifies that the network device may respectively indicate modulation schemes for transport blocks involving complementary transmission of more than one transport block, the sending device may determine the number of complementary transmission bits according to the time-frequency resource and the modulation scheme of each transport block, and implement the above method to determine data # B and map data # B to time-frequency resource # B.

After determining the data # B, the time-frequency resource # B, and the mapping manner of the data # B on the time-frequency resource # B as described above, the transmitting device may transmit the data # B (i.e., an example of the second data) to the receiving device at the time-frequency resource # B (i.e., an example of the second time-frequency resource) S220.

For example, in the embodiment of the present invention, the time-frequency resource # B may be used only for carrying data # B.

For another example, in the embodiment of the present invention, the time-frequency resource # B may also be used to carry other bits (i.e., an example of the fourth data) corresponding to the TB # a, except for the bit # a.

It should be noted that, in the embodiment of the present invention, when the time-frequency resource # B may also be used for carrying the fourth data, a modulation manner of the data # B may be the same as a modulation manner of the fourth data. Alternatively, the modulation scheme of the data # B may be different from the modulation scheme of the fourth data, and the present invention is not particularly limited. The modulation scheme of the data # B may be specified by the control information # B, or the modulation scheme of the data # a may be reused, or the same modulation scheme as the fourth data sharing the time-frequency resource may be used.

For another example, in the embodiment of the present invention, the time-frequency resource # B may also be used to carry data corresponding to other TBs (i.e., an example of the fourth data) except for the TB # a. In the embodiment of the present invention, the fourth data may correspond to one TB, or the fourth data may correspond to a plurality of TBs, which is not particularly limited in the present invention.

It should be understood that the specific form of the data other than TB # a carried by the time-frequency resource # B listed above is only an exemplary illustration, and the present invention is not limited thereto, for example, the data other than TB # a carried by the time-frequency resource # B may also be CB or a CB group or a TB group.

In the embodiment of the present invention, when the fourth data may correspond to a plurality of TBs, the modulation scheme of the data # B may be the same as that of any one of the plurality of TBs, or the modulation scheme of the data # B may be different from that of each of the plurality of TBs, and the present invention is not particularly limited. Specifically, when the fourth data may correspond to a plurality of TBs, the modulation scheme of the data # B may adopt the same modulation scheme as the TB with the lowest modulation scheme order among the plurality of TBs. Or, the network device indicates which layer or layers to transmit in for the retransmission device, and the data # B uses the same modulation method as the fourth data in the layer.

It is explained next how to determine which part of the time frequency resources # B is available to carry data # B when the fourth data is present.

For example, the specific time-frequency resource used to transmit data # B may be indicated by the network device. For example, the control information # B may also be used to indicate which resources in the time-frequency resource # B are used to carry the data # B and which resources are used to carry the fourth data. The control information # B may also indicate only information of the time frequency resource # B, and both the transmitting apparatus and the receiving apparatus may understand that the data # B shares the time frequency resource # B with the fourth data. An example of the data # B sharing the time-frequency resource # B with the fourth data will be described below.

The fourth data corresponds to more than one TB (e.g., N), and the control information # B may indicate how the data # B uses the time-frequency resource # B. The control information # B may also indicate only the time frequency resource # B, and both the transmitting apparatus and the receiving apparatus may understand that the data # B shares the time frequency resource # B with the fourth data. The data # B may share a time-frequency resource with one of the N TBs, for example, any one of the N TBs, or the TB with the lowest code modulation scheme sequence number among the N TBs. Alternatively, data # B may share time-frequency resources with N TBs, where N is less than or equal to N. An example of the data # B sharing the time-frequency resource # B with the n TBs will be described below.

The transmitting device may form the complementary transmission data (e.g., data # B) into a sequence of bits or a sequence of modulation symbols. When the time-frequency resource # B may also be used to carry the fourth data, and the sending device corresponding to a TB (hereinafter, referred to as TB # M for easy understanding) may determine the number of available REs in the time-frequency resource # B according to the time-frequency resource # B indicated by the control information # B, subtract the number of REs occupied by the complementary transmission data (e.g., data # B) (i.e., the number of REs required by data corresponding to the time-frequency resource # C in complementary transmission) from the number of available REs, and determine the modulation symbol specifically transmitted by the TB # M according to the number of available REs of the TB # M and the determined modulation mode of the data # B. After the transmitting device generates the data # B modulation symbol sequence (for example, the modulation symbol sequence determined according to the time-frequency resource # C, or the modulation symbol sequence recovered from the modulation symbol sequence corresponding to the time-frequency resource # C or generated after reading the bit sequence based on the soft buffer method) by the method, the transmitting device constructs a modulation symbol sequence to be mapped in such a way that the modulation symbol sequence is transmitted in front of the modulation symbol sequence and the modulation symbol sequence of TB # M is transmitted in back of the modulation symbol sequence. And then the modulation symbol sequence is mapped to the time frequency resource indicated by the scheduling information according to a mapping method of non-supplementary transmission data predefined by a communication protocol. The advantage of placing the complement transmission modulation symbol sequence in front is that the complement transmission data can be sent to the receiving device as soon as possible, which is helpful for the receiving device to combine the original receiving signal and the complement transmission signal to demodulate and decode as soon as possible, and alleviate the influence of the affected time-frequency resources on the original transmission.

The transmitting device may form the complementary transmission data (e.g., data # B) into a sequence of bits or a sequence of modulation symbols. When the time frequency resource # B may also be used to carry the fourth data, and the fourth data corresponds to N TBs, the sending device determines the N TBs of the time frequency resource shared by the data # B according to the above method. And subtracting the number of REs occupied by complementary transmission data (e.g., data # B) (i.e., the number of REs required by data corresponding to time-frequency resource # C in complementary transmission) from the time-frequency resources used by the n TBs, and determining the modulation symbols specifically transmitted by the n TBs according to the number of REs available for the n TBs and the determined modulation mode of data # B. And the transmitting equipment still uses the modulation symbol sequence of the supplemental transmission to be in front and the modulation symbol sequences of the n TBs to be in back to construct the modulation symbol sequence to be mapped. And then the modulation symbol sequence is mapped to the time frequency resource indicated by the scheduling information according to a mapping method of non-supplementary transmission data predefined by a communication protocol. When n is greater than 1, the number of REs required for data # B may be averaged over the time-frequency resources of each of the n TBs.

It should be noted that, in the above method, the number of REs specifically occupied by the data # B may be predefined by a communication standard, for example, equal to the number of REs required by the data corresponding to the time-frequency resource # C in the complementary transmission, and the data corresponding to the time-frequency resource # C is completely transmitted in the complementary transmission. This has the advantage of reducing the complexity of the receiving device and the transmitting device. The number of REs specifically occupied by the data # B may also be not equal to the number of REs required by the data corresponding to the time-frequency resource # C in the supplementary transmission, for example, the number of REs specifically occupied by the data # B is notified by the network device through signaling. A second benefit is that the scheduling complexity of the network device is increased.

Alternatively, the transmitting device may form the retransmission data (e.g., data # B) into a bit sequence (e.g., recovered from the modulation symbol sequence corresponding to time-frequency resource # C or read from soft buffer based on the above method), averagely divide the bit sequence into subsequences with the number of n TBs, and modulate each subsequence according to the modulation mode of the corresponding TB (the number of modulation symbols generated by the bit subsequences corresponding to TBs with different modulation modes is different). Wherein a bit sequence may be equally divided into subsequences corresponding to more than one other transport block number. The method is simple to implement and is beneficial to reducing the implementation complexity of the receiving equipment and the sending equipment. In addition, one bit sequence can also be divided into subsequences with the same number as more than one other transmission block, and the modulated modulation symbols of each bit subsequence are ensured to be the same. The method can average the influence of the supplementary transmission occupying other transmission blocks in each transmission block, and is beneficial to improving the whole transmission reliability. For example, the one complementary transmission bit sequence includes 12 bits, and the other transmission blocks are two in total, the modulation scheme of the transmission block No. 0 is QPSK, and the modulation scheme of the transmission block No. 1 is 16 QAM. With the equal division method, the two bit sequences are each 6 long. The method of equal modulation symbols is adopted, the length of the first sequence is 4 bits, the length of the second sequence is 8 bits, and the first sequence and the second sequence correspond to 2 modulation symbols respectively.

In addition, if the number of TBs (or CBs) involved in the supplemental data is the same as the number of n TBs, the TBs of one data # B may share time-frequency resources by one of the n TBs sequentially corresponding thereto.

Thus, at S210, the receiving device may receive data # a through the time-frequency resource # a, specifically, the data # a may include data corresponding to the bit # a-1 and interference data, or an interference signal, carried on the time-frequency resource # C or the time-frequency resource # D.

At S220, the receiving device may receive data # B (specifically, data corresponding to bit # a-2) through the time-frequency resource # B.

Thus, the receiving device can merge-decode the data # a and the data # B at S230.

The process of the merged decoding is exemplarily explained below.

Mode α

In the embodiment of the present invention, when the data # a has an impact on the data corresponding to the time-frequency resource # C, the receiving device first removes the impact on the data # a corresponding to the time-frequency resource # C, and then merges and decodes the data # a and the data # B after the removal processing. When data # B is determined by time-frequency resource # C.

In the embodiment of the present invention, the receiving device may determine bit soft information corresponding to data # a (i.e., data carried on time-frequency resource # a), for example, as shown in fig. 21 to 23, the bit soft information of the data # a may be a_n～a_n+6。

Thereafter, the receiving device may soft the bits (e.g., a) of the data # A_n～a_n+6) The memory # a (i.e., an example of the first memory) is written.

For example, as shown in fig. 21, in the embodiment of the present invention, the receiving apparatus writes the bit soft information (e.g., a) of the data # a in the memory # a_n～a_n+6) May correspond to the mapping order of the data # a on the time-frequency resource # a.

Thus, the receiving device can determine the bit soft information (e.g., a) corresponding to the time-frequency resource # C (specifically, the data carried by the time-frequency resource # C) in the memory # a according to the position of the time-frequency resource # C in the time-frequency resource # a (or the relative position of the time-frequency resource # C and the time-frequency resource # a)_n+1、a_n+2And a_n+5)。

Thereafter, the receiving device may transmit bit information (e.g., a) corresponding to the time-frequency resource # C in the memory # A_n+1、a_n+2And a_n+5) The effect of the data corresponding to this time frequency resource # C in memory a is cleared.

Also, in the embodiment of the present invention, the receiving device may determine bit soft information corresponding to data # B (i.e. data carried on time-frequency resource # B), for example, as shown in fig. 23, the bit soft information of the data # B may be B_n+1、b_n+2And b_n+5. The ratio of data # B shown in FIG. 23The very soft information is for illustration and the invention is not limited thereto, for example, the bit soft information of the data # B may include B_n+1、b_n+2And b_n+5Or the bit soft information of the data # B may further include other than B_n+1、b_n+2And b_n+5And other bit soft information.

Also, in the embodiment of the present invention, the receiving device may determine, according to the location of the time-frequency resource # C in the time-frequency resource # a (or the relative location of the time-frequency resource # C and the time-frequency resource # a), the location where the bit soft information of the data # B needs to be written into the memory # a (i.e., the combining location) or the location where the bit soft information of the data # B is combined with the bit soft information in the memory # a. For example, b in FIG. 23_n+1、b_n+2And b_n+5And writing the position of the bit soft information 0 in the memory # A.

Alternatively, the bit soft information corresponding to the data # B may be written into the memory # a (or combined with the bit soft information in the memory # a) at a combining position determined by the position in the memory # a of the bit #1 included in the data # B.

Thus, the receiving device can combine the bits written in the respective positions in the memory # a and decode the combined data. Alternatively, the receiving device may decode according to the result of combining the bit soft information in the memory # a with the data # B bit soft information.

Thereafter, the receiving device may determine feedback information for TB # a according to the decoding result.

For example, if the decoding is successful, the receiving device may feed back ACK information to the transmitting device.

As another example, if the decoding fails, the receiving device may feed back NACK information to the transmitting device β

In the embodiment of the present invention, the data # a has an influence on the data corresponding to the time-frequency resource # C, and the receiving device first removes the influence on the data # a corresponding to the time-frequency resource # C, and then merges and decodes the data # a and the data # B after the removal processing. When data # B is determined by time-frequency resource # C.

In the embodiment of the present invention, the receiving apparatus can write the data # a to the memory # B (i.e., an example of the first memory).

For example, as shown in fig. 22, in the embodiment of the present invention, the receiving device may determine, according to the position of the time-frequency resource # C in the time-frequency resource # a (or the relative position of the time-frequency resource # C and the time-frequency resource # a), the data # X carried on the time-frequency resource # C in the data # a, and the receiving device may set the bit soft information of the data # X to zero.

Thereafter, the receiving apparatus writes the data # a subjected to the zero setting process in the memory # B.

That is, in the memory # B, the bit information corresponding to the time frequency resource # C is set to zero, i.e., the influence of the data corresponding to the time frequency resource # C in the memory B is cleared.

Also, in the embodiment of the present invention, the receiving device may determine bit soft information corresponding to data # B (i.e. data carried on time-frequency resource # B), for example, as shown in fig. 23, the bit soft information of the data # B may be B_n+1、b_n+2And b_n+5. It should be noted that the bit soft information of the data # B shown in fig. 23 is an exemplary illustration, and the invention is not limited thereto, for example, the bit soft information of the data # B may include B_n+1、b_n+2And b_n+5Or the bit soft information of the data # B may further include other than B_n+1、b_n+2And b_n+5And other bit soft information.

Also, in the embodiment of the present invention, the receiving device may determine, according to the location of the time-frequency resource # C in the time-frequency resource # a (or the relative location of the time-frequency resource # C and the time-frequency resource # a), the location (i.e., the merging location) where each bit of soft information of the data # B needs to be written into the memory # B. Or the position where each bit soft information of the data # B is combined with the bit soft information in the memory # A, for example, B in FIG. 23_n+1、b_n+2And b_n+5And writing the position of the bit soft information 0 in the memory # B.

Alternatively, the bit soft information corresponding to the data # B may be written in the memory # B (or combined with the bit soft information in the memory # a) at the combining position determined by the position in the memory # B of the bit #1 included in the data # B.

Thus, the receiving device can combine the bits written in the respective positions in the memory # B and decode the combined data. Alternatively, the receiving device may decode according to the result of combining the bit soft information in the memory # B with the data # B bit soft information.

For another example, if the decoding fails, the receiving device may feed back NACK information to the transmitting device.

Mode γ

In the embodiment of the present invention, when the data # a has an impact on the data corresponding to the time-frequency resource # C, the receiving device first removes the impact on the data # a corresponding to the time-frequency resource # C, and then merges and decodes the data # a and the data # B after the removal processing. When data # B is determined by time-frequency resource # D.

In the embodiment of the present invention, the receiving device may determine bit soft information corresponding to the data # a (i.e., the data carried on the time-frequency resource # a). The receiving device may determine, according to the position of the time-frequency resource # C in the time-frequency resource # a (or the relative position of the time-frequency resource # C and the time-frequency resource # a), the data # X carried on the time-frequency resource # C in the data # a, and the receiving device may remove (remove) bit soft information of the data # X. The erasure refers to erasing the corresponding bit soft information so that the length of the bit soft information sequence of the original data # a becomes shorter after the bit soft information of the data # X is erased, for example (the length of the bit soft information sequence of the original data # a — the number of bit soft information corresponding to the data # X).

Thereafter, the receiving apparatus can write the bit soft information of the data # a subjected to the erasure processing to the memory # C (i.e., an example of the first memory).

For example, in the embodiment of the present invention, the order in which the receiving device writes the bit soft information of the deletion processed data # a in the memory # C may correspond to the mapping order of the deletion processed data # a on the time-frequency resource # a.

Also, in the embodiment of the present invention, the receiving device may determine bit soft information corresponding to the data # B (i.e., data carried on the time-frequency resource # B).

Also, in the embodiment of the present invention, the receiving device may determine, according to the location of the time-frequency resource # D in the time-frequency resource # a (or the relative location of the time-frequency resource # D and the time-frequency resource # a), the location (i.e., the merging location) where each bit of soft information of the data # B needs to be written into the memory # a. Or the location where the respective bit soft information of the data # B is combined with the bit soft information in the memory # a. For example, the bit soft information corresponding to the data # B may be written into one or more storage units (the specific number may be determined based on the size of the time-frequency resource # C) located at the end in the memory # C.

Alternatively, the bit soft information corresponding to the data # B may be written into the memory # C (or combined with the bit soft information in the memory # a) at a combining position determined by the position in the memory # C of the bit #1 included in the data # B.

Thus, the receiving device can combine the bits written in the respective positions in the memory # a and decode the combined data. Alternatively, the receiving device may decode according to the result of combining the bit soft information in the memory # C with the data # B bit soft information.

The bit soft information is probability information of a bit. The probability information of a bit may be a probability that the bit is equal to 0 and/or equal to 1, or may be a log-likelihood ratio (LLR) of the bit. The LLR is defined as the log value of the ratio of the probability that a bit equals 0 to the probability that a bit equals 1. The probability that the LLR information for one bit is equal to 0 is 0.5 for both bits equal to 0 and equal to 1. Alternatively, "zeroed" may mean that the receiving device does not use the bits that are "zeroed" in decoding. The above-mentioned zeroing of data is to clear the influence of the zeroed data before decoding, i.e. there is no a priori information about the zeroed data in the decoding process, and the probability that the zeroed bit is equal to 0 and equal to 1 is 0.5. Accordingly, if LLR is not used for decoding but probability information is used, "zero" is to set the probabilities of being equal to 1 and being equal to 0 of the zeroed data to 0.5.

The memory may be the soft buffer of the receiving device. After the bit soft information of the received data is written or combined into the soft buffer, the receiving device can send the bit soft information in the soft buffer into the decoder for decoding. Or, the receiving device may combine the received bit soft information with the bit soft information in the soft buffer and send the combined bit soft information to the decoder for decoding.

The soft information of the bit in the memory is set to zero, namely the influence of the soft information of the bit in the memory is eliminated, or the data in the memory is sent to a decoder for decoding, and the influence of the soft information of the bit is eliminated in the decoding process.

As described above, the above flush operation may include both zeroing and removing the very soft information. Both operations are intended to clear the effect of operands (e.g., data bits or soft information for data bits) on decoding. The zero setting means that the position of the operation object in the information sequence or the position in the memory is still reserved after the influence is eliminated, and the removal means that the position of the operation object in the information sequence after the influence is eliminated and supplemented by the subsequent information, namely the sequence length after the removal operation is shortened. It should be noted that, in the embodiment of the present invention, the processes such as "zero", "remove", "clear", and the like described in the merging process are only exemplary, the present invention is not limited thereto, and other processing terms or methods capable of functioning as the above processes such as "zero", "clear", or "remove" fall within the scope of the present invention, for example, the above descriptions such as "zero" or "remove" may also be understood as "eliminate", "remove", "zero", "clear", "delete", and the like.

As described above, a "write" operation may include storing information to be written to memory only. Alternatively, if the memory is empty, a "write" operation may include storing the information to be written to memory only; if the memory stores data, the "write" operation also includes the operation of adding the information to be written and the original stored information at the corresponding position, and then storing the added result into the memory, or merging.

It should be noted that, in the embodiment of the present invention, the information "writing" is only an exemplary illustration, the present invention is not limited thereto, and other processing terms or methods capable of performing the functions of the processing such as "writing" and the like fall within the protection scope of the present invention, for example, the description of "writing" may also be understood as "storing", "placing", "storing", "adding to the original stored data", "merging", and the like.

If so, the "merge" operation may include adding the band merge data at the corresponding location, which may be the merge location described above.

It should be noted that, in the embodiment of the present invention, the information "merge" is only an exemplary illustration, the present invention is not limited thereto, and other processing terms or methods capable of functioning as the above-mentioned "merge" and the like all fall within the protection scope of the present invention, for example, the above-mentioned "merge" description can also be understood as "add", "accumulate", "sum", "combine", and the like.

In addition, in the embodiment of the present invention, the method and the process for the receiving device to process the received signal to obtain the bit soft information corresponding to the received data may be similar to those in the prior art, and here, detailed descriptions thereof are omitted to avoid redundancy.

As an example and not by way of limitation, the method of transmitting data and the method of receiving data information according to the embodiments of the present invention may be performed in the following case, and specifically, downlink control information in the embodiments of the present invention (where the downlink control information may be used to indicate that feedback information for a first information block needs to be generated based on a merged decoding result of the first data and the second data) may be transmitted and received in the following case, or an indicator (i.e., an example of the first indication information or the second indication information) in the embodiments of the present invention may be transmitted and received in the following case, or second data in the embodiments of the present invention may be transmitted and received in the following case.

Case 1-1

The network equipment sends an Indicator to indicate the downlink transmission related condition to the terminal equipment, and the Indicator is used for informing the terminal equipment that: the reliability of the signal carried on time-frequency resource # C indicated by the Indicator is worse than the reliability of the signal on resources other than time-frequency resource # C on time-frequency resource # a. For example, the time-frequency resource # C does not carry the allocated data, or the network device determines that the interference suffered by the time-frequency resource # C is larger than that of other resources on the time-frequency resource # a, or the time-frequency resource # C carries other data besides the allocated data.

Cases 1 to 2

The terminal equipment sends an Indicator to indicate the downlink transmission related conditions to the network equipment, and the Indicator is used for indicating the following conditions to the network equipment: in the signals received by the terminal device on the time frequency resource # a, the reliability of the signals carried on the time frequency resource # C is lower than the reliability of the signals on the time frequency resources other than the time frequency resource # C on the time frequency resource # a. For example, the terminal device determines that the reliability of the signal carried on the time-frequency resource # C is poor in the process of demodulating and decoding the downlink signal.

Cases 1 to 3

The network equipment sends an Indicator to indicate the uplink transmission related condition to the terminal equipment, and the Indicator is used for informing the terminal equipment that: the reliability of the signal carried on time-frequency resource # C indicated by the Indicator is worse than the reliability of the signal on resources other than time-frequency resource # C on time-frequency resource # a. For example, the time frequency resource # C is reallocated to other uplink transmissions, or the terminal device determines that the reliability of the signal carried on the time frequency resource # C is poor in the process of demodulating and decoding the downlink signal.

Cases 1 to 4

The terminal equipment sends an Indicator to indicate the uplink transmission related condition to the network equipment, and the Indicator is used for indicating the following conditions to the network equipment: the reliability of the signal carried on time frequency resource # C is worse than the reliability of the signal on the resources other than time frequency resource # C on time frequency resource # a. For example, the terminal device transmits data not allocated to be carried by the time-frequency resource # C on the time-frequency resource # C, and the terminal device does not transmit any data on the time-frequency resource # C.

It should be noted that the Indicator may be carried by a physical control channel.

Cases 1 to 5

The network device transmits control information to the terminal device instructing the terminal device to transmit or receive second data (e.g., data # B) described later to improve the reception reliability of a TB (i.e., TB # a) corresponding to the first data (e.g., data # a described later, specifically, partial bits of bit #1 included in data # a) and the second data. For example, after scheduling downlink transmission on the time-frequency resource # a and before receiving no corresponding feedback information, the network device sends the control information to instruct the terminal device to receive the second data to improve the reception reliability of TB # a, according to the channel measurement signal fed back by the terminal device, where the last scheduling reliability is insufficient.

Case 2-1

After the terminal device completes receiving data or transmitting data (e.g., data corresponding to HARQ process # Y) scheduled by the control information # Y, it receives or transmits an Indicator transmitted by the network device, thereby determining that part or all of resources scheduled by the control information # Y are affected. And the terminal equipment waits for the network equipment to schedule and supplement transmission, determines that the control information # Z corresponds to the control information # Y after receiving the control information # Z at a preset position, and reads the information # Z contained in the control information # Z to determine the scheduling of the network equipment for supplement transmission.

Case 2-2

The terminal device receives control information # Z scheduled for retransmission (where the control information # Z may be used to indicate that feedback information for the first information block needs to be generated based on the merged decoding result of the first data and the second data). The terminal device searches forward the control information # Y corresponding to the process according to the HARQ process corresponding to the second data, and confirms that the control information # Y corresponds to the control information # Z.

Cases 2 to 3

The terminal device receives control information # Z scheduled for retransmission (where the control information # Z may be used to indicate that feedback information for the first information block needs to be generated based on the merged decoding result of the first data and the second data). The terminal device searches (detects) the Indicator forward, and after reading the Indicator, further determines that the control information # Y for scheduling transmission on the resource indicated by the Indicator corresponds to the control information # Z.

Fig. 24 shows a schematic interaction diagram of a method 300 of transmitting data between a sending device and a receiving device.

At S310, the network device may transmit first data to the terminal device on a first time-frequency resource.

The first data may carry a first bit of the first TB after being encoded.

By way of example and not limitation, in the embodiment of the present invention, the first time-frequency resource may include the above-mentioned "affected time-frequency resource", that is, the third time-frequency resource.

And, the network device may transmit the second data to the terminal device at S320.

Wherein the first data may carry a second bit of the first TB after being encoded.

As an example and not by way of limitation, in the embodiment of the present invention, the second data may be determined according to the third time-frequency resource, and the determining process may be similar to the process of determining the time-frequency resource # B based on the time-frequency resource # C in the method 200, and here, to avoid redundant description, detailed description thereof is omitted.

At S330, the network device may send control information to the terminal device, where the control information is used to indicate the third time-frequency resource.

By way of example and not limitation, in the embodiment of the present invention, the control information is also used to indicate feedback information for the first TB.

In addition, in the embodiment of the present invention, the step S320 may be performed before the step S330, or the step S320 may be performed after the step S330, which is not particularly limited in the present invention.

In S340, the terminal device may perform erasure processing on the first data (e.g., bit soft information of the first data) to erase the bit soft information corresponding to the third time-frequency resource in the first data, and write the first data after the erasure processing (e.g., the bit soft information of the first data after the erasure processing) into the first memory;

or, the terminal device writes the first data (e.g., bit soft information of the first data) into a first memory, and zeroes the bit soft information in the first memory corresponding to the third time-frequency resource.

Thereafter, the terminal device may determine a writing location (i.e., an instance of the combining location) of the second data (e.g., bit soft information of the second data) in the first memory.

Optionally, the terminal device receives second control information from the network device, the second control information indicating a merging position of the second data (e.g., bit soft information of the first data) and the data in the first memory.

By way of example and not limitation, in the embodiment of the present invention, the network device may determine the combining position according to a relative relationship between the position of the first time-frequency resource and the position of the third time-frequency resource, or the position of the third time-frequency resource in the first time-frequency resource, or the position of the third time-frequency resource and the position of the first time-frequency resource.

In addition, in the embodiment of the present invention, a specific determination manner of the merging position may be similar to the determination manner of the writing position of the data # B (e.g., the bit soft information of the data # B) in the memory in the method 200, and here, a detailed description thereof is omitted to avoid redundancy.

Thus, the terminal device can combine the bit soft information written in each position in the first memory and decode the combined data.

Fig. 25 shows a schematic block diagram of an apparatus 400 for sending data according to an embodiment of the present invention, where the apparatus 400 for sending data may correspond to (for example, may be configured in or be itself the sending device described in the method 200), and each module or unit in the apparatus 400 for sending data is respectively configured to execute each action or processing procedure executed by the sending device in the method 200, and here, detailed descriptions thereof are omitted to avoid redundancy.

In an embodiment of the present invention, the apparatus 400 may include: the device further comprises a memory, the memory being communicatively coupled to the processor. Alternatively, a processor, a memory, and a transceiver may be communicatively coupled, the memory may be configured to store instructions, and the processor may be configured to execute the instructions stored by the memory to control the transceiver to transmit information or signals.

The transmitting unit and the receiving unit in the apparatus 400 shown in fig. 25 may correspond to the transceiver.

Fig. 26 shows a schematic block diagram of an apparatus 500 for receiving data according to an embodiment of the present invention, where the apparatus 500 for receiving data may correspond to (for example, may be configured in or be itself the receiving device described in the method 200), and each module or unit in the apparatus 500 for receiving data is respectively configured to execute each action or processing procedure executed by the receiving device in the method 200, and here, detailed descriptions thereof are omitted to avoid redundancy.

In an embodiment of the present invention, the apparatus 500 may include: the device further comprises a memory, the memory is in communication with the processor, optionally, the processor, the memory and the transceiver can be in communication, the memory can be used for storing instructions, and the processor is used for executing the instructions stored in the memory to control the transceiver to transmit information or signals.

The transmitting unit and the receiving unit in the apparatus 500 shown in fig. 26 may correspond to the transceiver, and the processing unit in the apparatus 500 shown in fig. 26 may correspond to the processor.

Fig. 27 shows a schematic block diagram of a terminal device 600 according to an embodiment of the present invention, where the terminal device 600 corresponds to (for example, may be configured with or is itself the terminal device described in the method 300, and each module or unit in the terminal device 600 is respectively used to execute each action or processing procedure executed by the terminal device 600 in the method 300, and here, detailed descriptions thereof are omitted to avoid redundancy.

In this embodiment of the present invention, the terminal device 600 may include: the device further comprises a memory, the memory is in communication with the processor, optionally, the processor, the memory and the transceiver can be in communication, the memory can be used for storing instructions, and the processor is used for executing the instructions stored in the memory to control the transceiver to transmit information or signals.

The transmitting unit and the receiving unit in the terminal device 600 shown in fig. 27 may correspond to the transceiver, and the processing unit in the terminal device 600 shown in fig. 27 may correspond to the processor.

It should be noted that the above-described method embodiments may be applied in or implemented by a processor. The processor may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable gate array (FPGA) or other Programmable logic device, discrete gate or transistor logic device, discrete hardware component. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in embodiments of the invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and direct memory bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present embodiments.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or make a contribution to the prior art, or may be implemented in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above description is only a specific implementation of the embodiments of the present invention, but the scope of the embodiments of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the embodiments of the present invention, and all such changes or substitutions should be covered by the scope of the embodiments of the present invention.

Claims

1. A method of transmitting data, the method comprising:

the method comprises the steps that a sending device sends first data to a receiving device on a first time-frequency resource, wherein the first data comprises a first bit in bits obtained after a first information block is coded;

the sending device sends second data to the receiving device on a second time-frequency resource, the second data is determined according to information of a third time-frequency resource, the second data comprises a second bit in bits obtained after the first information block is coded, or the second data comprises a first modulation symbol in modulation symbols obtained after the first information block is coded and modulated, and the third time-frequency resource is part or all of the first time-frequency resource;

the sending device receives feedback information aiming at the first information block from the receiving device, wherein the feedback information is obtained based on the result of the merged coding of the first data and the second data.

2. The method of claim 1, wherein the second data is determined according to one of a location of the third time-frequency resource and a size of the third time-frequency resource.

3. The method of claim 1, wherein the second data comprises a second bit of the bits of the first information block after encoding, and

the second data is determined according to third data, the third data is obtained after the sending device recovers a first modulation symbol, the first modulation symbol belongs to a modulation symbol obtained after the first information block is coded and modulated, and the first modulation symbol is determined according to information of the third time-frequency resource.

4. The method of claim 1, wherein the second data comprises a second bit of the bits of the first information block after encoding, and

and the second data is determined according to the mapping mode of the bits obtained by coding the first information block on the first time-frequency resource and the information of the third time-frequency resource.

5. The method of claim 1, wherein the second data comprises a second bit of the bits of the first information block after encoding, and

the second data comprises a coding block CB or a CB group to which bits corresponding to the third time-frequency resource belong.

6. The method according to any of claims 1 to 5, wherein the transmitting device transmits the second data on a second time-frequency resource, comprising:

and the sending equipment sends the second data and fourth data on a second time frequency resource, wherein the fourth data comprises bits obtained by coding a second information block.

7. The method according to any one of claims 1 to 5, further comprising:

the sending equipment sends first indication information to the receiving equipment, wherein the first indication information is used for indicating the third time-frequency resource; or

And the sending equipment receives second indication information from the receiving equipment, wherein the second indication information is used for indicating the third time frequency resource.

8. The method according to any of claims 1 to 5, wherein the third time-frequency resource is a time-frequency resource in which a received signal-to-noise ratio of signals carried in the first time-frequency resource is less than or equal to a preset first threshold, or

The third time frequency resource is the time frequency resource of which the transmission power of the signal carried in the first time frequency resource meets a preset first condition, or

The third time frequency resource is the time frequency resource which does not bear the first bit in the first time frequency resource, or

The third time-frequency resource is the time-frequency resource which carries the data except the first bit in the first time-frequency resource.

9. A method of receiving data, the method comprising:

receiving first data on a first time-frequency resource by receiving equipment, wherein the first data comprises a first bit in bits obtained by coding a first information block;

the receiving device receives second data on a second time-frequency resource, where the second data is determined according to a third time-frequency resource, the second data includes a second bit of bits obtained by encoding the first information block, or the second data includes a first modulation symbol of modulation symbols obtained by encoding and modulating the first information block, and the third time-frequency resource is a partial resource of the first time-frequency resource;

the receiving device merge-codes the first data and the second data;

the receiving equipment determines feedback information aiming at the first information block according to the result of the merging and decoding;

and the receiving equipment sends the feedback information to the sending equipment.

10. The method of claim 9, wherein the receiving device performs merged decoding on the first data and the second data, comprising:

the receiving equipment determines data to be processed from the first data according to the third time-frequency resource;

the receiving equipment determines the merging position of the second data and the data to be processed according to the third time-frequency resource;

and the receiving equipment carries out merging coding on the first data and the data to be processed according to the merging position.

11. The method according to claim 10, wherein the determining, by the receiving device, the data to be processed from the first data according to the third time-frequency resource comprises:

the receiving device writes the first data into a first memory;

the receiving device sets the bit information corresponding to the third time frequency resource in the first memory to zero;

the receiving device takes the data stored in the first memory as the data to be processed.

12. The method according to claim 10, wherein the determining, by the receiving device, the data to be processed from the first data according to the third time-frequency resource comprises:

and the receiving equipment removes bits corresponding to the third time-frequency resource in the first data so as to determine the data to be processed.

13. The method according to any of claims 9 to 12, wherein the receiving device receives second data on a second time-frequency resource, comprising:

and the receiving equipment receives second data and fourth data on a second time frequency resource, wherein the fourth data comprises bits obtained after the second information block is coded.

14. The method according to any one of claims 9 to 12, further comprising:

the receiving device receives first indication information from the sending device, wherein the first indication information is used for indicating the third time-frequency resource; or

And the receiving equipment sends second indication information to the sending equipment, wherein the second indication information is used for indicating the third time-frequency resource.

15. The method according to any of claims 9 to 12, wherein the third time-frequency resource is a time-frequency resource in which a received signal-to-noise ratio of signals carried in the first time-frequency resource is smaller than or equal to a preset first threshold, or

16. An apparatus for transmitting data, the apparatus comprising:

a sending unit, configured to send first data to a receiving device on a first time-frequency resource, where the first data includes a first bit of bits obtained by encoding a first information block, and is used to send second data to the receiving device on a second time-frequency resource, where the second data is determined according to information of a third time-frequency resource, the second data includes a second bit of the bits obtained by encoding the first information block, or the second data includes a first modulation symbol of modulation symbols obtained by encoding and modulating the first information block, and the third time-frequency resource is a part or all of the first time-frequency resource;

a receiving unit, configured to receive, from the receiving device, feedback information for the first information block, where the feedback information is obtained based on a result of merging and decoding the first data and the second data.

17. The apparatus of claim 16, wherein the second data is determined according to one of a location of the third time-frequency resource and a size of the third time-frequency resource.

18. The apparatus of claim 16, wherein the second data comprises a second bit of the bits of the first information block after encoding, and wherein

The second data is determined according to third data, the third data is obtained after the device recovers a first modulation symbol, the first modulation symbol belongs to a modulation symbol obtained after the first information block is coded and modulated, and the first modulation symbol is determined according to information of the third time-frequency resource.

19. The apparatus of claim 16, wherein the second data comprises a second bit of the bits of the first information block after encoding, and wherein

20. The apparatus of claim 16, wherein the second data comprises a second bit of the bits of the first information block after encoding, and wherein

21. The apparatus according to any of claims 16 to 20, wherein the sending unit is specifically configured to send the second data and fourth data on a second time-frequency resource, and the fourth data includes bits obtained by encoding a second information block.

22. The apparatus according to any of claims 16 to 20, wherein the sending unit is further configured to send first indication information to the receiving device, where the first indication information is used to indicate the third time-frequency resource; or

The receiving unit is further configured to receive second indication information from the receiving device, where the second indication information is used to indicate the third time-frequency resource.

23. The apparatus according to any of claims 16 to 20, wherein the third time-frequency resource is a time-frequency resource in which a received signal-to-noise ratio of signals carried in the first time-frequency resource is smaller than or equal to a preset first threshold, or

24. An apparatus for receiving data, the apparatus comprising:

a receiving unit, configured to receive first data on a first time-frequency resource, where the first data includes a first bit of bits obtained by encoding a first information block, and is used to receive second data on a second time-frequency resource, where the second data is determined according to a third time-frequency resource, the second data includes a second bit of the bits obtained by encoding the first information block, or the second data includes a first modulation symbol of modulation symbols obtained by encoding and modulating the first information block, and the third time-frequency resource is a partial resource of the first time-frequency resource;

a processing unit, configured to perform merging decoding on the first data and the second data, and determine feedback information for the first information block according to a result of the merging decoding;

a sending unit, configured to send the feedback information to the sending device.

25. The apparatus according to claim 24, wherein the processing unit is specifically configured to determine data to be processed from the first data according to the third time-frequency resource;

the merging position of the second data and the data to be processed is determined according to the third time-frequency resource;

the merging coding module is used for merging and coding the first data and the data to be processed according to the merging position.

26. The apparatus according to claim 25, wherein the processing unit is specifically configured to write the first data to a first memory;

for zeroing out bit information in the first memory corresponding to the third time-frequency resource;

the data stored in the first memory is used as the data to be processed.

27. The apparatus according to claim 25, wherein the processing unit is specifically configured to remove bits of the first data corresponding to the third time-frequency resource to determine the data to be processed.

28. The apparatus according to any of claims 24 to 27, wherein the receiving unit is specifically configured to receive second data and fourth data on a second time-frequency resource, and the fourth data comprises bits obtained by encoding the second information block.

29. The apparatus according to any of claims 24 to 27, wherein the receiving unit is further configured to receive first indication information from the sending device, wherein the first indication information is used for indicating the third time-frequency resource; or

The sending unit is further configured to send second indication information to the sending device, where the second indication information is used to indicate the third time-frequency resource.

30. The apparatus according to any of claims 24 to 27, wherein the third time-frequency resource is a time-frequency resource in which a received signal-to-noise ratio of signals carried in the first time-frequency resource is smaller than or equal to a preset first threshold, or