CN108631951B

CN108631951B - Retransmission processing method and equipment

Info

Publication number: CN108631951B
Application number: CN201710184394.4A
Authority: CN
Inventors: 刘星; 黄曲芳; 酉春华
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-03-24
Filing date: 2017-03-24
Publication date: 2023-11-21
Anticipated expiration: 2037-03-24
Also published as: WO2018171711A1; CN108631951A

Abstract

The embodiment of the application provides a retransmission processing method and equipment, comprising the following steps: the terminal equipment receives first transmission information sent by the network equipment, wherein the first transmission information comprises at least one identifier of transmission data, and the transmission data is a code block or a code block group; the terminal equipment indicates a physical layer of the terminal equipment to generate first feedback information through an MAC layer; wherein the first feedback information characterizes whether at least one transmission data in the transmission block corresponding to the transmission data needs to be retransmitted. When downlink retransmission is needed, the terminal device instructs the physical layer of the terminal device to generate feedback information of decoding results of the transmission data through the MAC layer, and the network device can learn whether the decoding result of each CB or CBG in one TB is successful or failed, so that the network device can retransmit each CB or CBG subsequently.

Description

Retransmission processing method and equipment

Technical Field

The present application relates to communications technologies, and in particular, to a retransmission processing method and apparatus.

Background

With the continuous development of communication technology, the fifth Generation mobile communication technology (5 th-Generation, 5G) has begun to study and standardize. The physical layer of the transmitting end receives the data packet transmitted by the media access control layer (Media Access Control, MAC) of the transmitting end, and the physical layer of the transmitting end needs to process the data packet before the physical layer of the transmitting end transmits the data packet to the receiving end. In the process of processing a data packet at a transmitting end, wherein the data packet is a Transport Block, the whole Transport Block (TB) needs to be subjected to segmentation processing to obtain a plurality of Code Blocks (CB); in the segmentation process, whether to divide each CB into a plurality of Code Block Groups (CBGs) may be selected according to actual situations. Thus, one TB may consist of at least one CB; alternatively, one TB is composed of at least one CBG, and at least one CB is included in one CBG. After processing the data packet, the transmitting end transmits the data packet to the receiving end. Then, the receiving end needs to decode the data packet, when the decoding of the receiving end is unsuccessful, or the verification is unsuccessful, or the receiving is overtime, the receiving end indicates that the data packet cannot be successfully received by the receiving end, and when the receiving end needs to retransmit the data packet.

In the prior art, in the fourth Generation mobile communication technology (4 th-Generation, 4G), when the transmitting end needs to retransmit the data packet, the receiving end retransmits the entire TB.

In 5G, when the retransmission of the data packet is required, how the transmitting end and the receiving end retransmit the data packet becomes a problem to be defined and solved.

Disclosure of Invention

The application provides a retransmission processing method and equipment, which are used for solving the problem of how to retransmit a data packet by a transmitting end and a receiving end in the 5G in the prior art when the retransmission of the data packet is needed.

In a first aspect, the present application provides a retransmission processing method, including:

the method comprises the steps that terminal equipment receives first transmission information sent by network equipment, wherein the first transmission information comprises at least one identifier of transmission data, and the transmission data are code blocks or code block groups;

the terminal equipment instructs a physical layer of the terminal equipment to generate first feedback information through a media access control (Media Access Control, MAC) layer;

wherein the first feedback information characterizes whether at least one transmission data in a transmission block corresponding to the transmission data needs to be retransmitted.

In one possible design, the first transmission information further includes at least one of the following information:

the first size information of the transmission data, the first indication information of the transmission data and the second indication information of the transmission data;

the first indication information characterizes whether the transmission data is retransmission data or not, and the second indication information points to a transmission block corresponding to the transmission data.

In one possible design, after the terminal device receives the first transmission information sent by the network device, the method further includes:

and after the decoding of the retransmitted transmission data fails, the terminal equipment instructs a physical layer of the terminal equipment to carry out merging processing through the MAC layer.

the terminal equipment indicates a physical layer of the terminal equipment through an MAC layer, puts the successfully decoded transmission data into a buffer memory, and deletes first buffer memory data corresponding to the successfully decoded transmission data.

And when the terminal equipment fails in decoding, the terminal equipment does not receive third indication information, wherein the third indication information is characterized in that the transmission data with the failed decoding is not subjected to data transmission of the transmission data with the failed decoding on resources allocated for the transmission data with the failed decoding, the terminal equipment indicates a physical layer of the terminal equipment through an MAC layer, the transmission data with the failed decoding is put into a buffer memory, and second buffer memory data corresponding to the transmission data with the failed decoding is deleted.

and when the terminal equipment decodes the data in the transmission block corresponding to the transmission data successfully, the physical layer of the terminal equipment is indicated to be cascaded through the MAC layer.

In one possible design, before the terminal device receives the first transmission information sent by the network device, the method further includes:

the terminal equipment acquires configuration information;

wherein the configuration information includes at least one of: the format of the downlink control information, the length of the downlink control information, the number of code block groups of the transmission block, and the number of code blocks in one code block group of the transmission block.

In a second aspect, the present application provides a retransmission processing method, including:

the terminal equipment receives second transmission information sent by the network equipment, wherein the second transmission information comprises at least one identifier of transmission data, and the transmission data is a code block or a code block group;

and the terminal equipment indicates a physical layer of the terminal equipment through the MAC layer and sends the transmission data in the storage position to the network equipment.

In one possible design, the second transmission information further includes at least one of the following information:

the second size information of the transmission data, the fourth indication information of the transmission data and the fifth indication information of the transmission data; wherein the fourth indication information characterizes whether the transmission data is retransmission data or not, and the fifth indication information characterizes a redundancy version of the transmission data.

In one possible design, after the terminal device instructs the physical layer of the terminal device through the MAC layer to send the transmission data in the storage location to the network device, the method further includes:

and the terminal equipment indicates a physical layer of the terminal equipment through the MAC layer, and deletes the transmission block corresponding to the transmission data when the retransmission times are greater than or equal to a first retransmission threshold value.

In one possible design, the second transmission information further includes: a sixth indication of the transmission data;

wherein the sixth indication information points to a transport block corresponding to the transport data.

In a third aspect, the present application provides a retransmission processing method, including:

the terminal equipment receives second feedback information sent by the network equipment, wherein the second feedback information characterizes whether at least one transmission data in a transmission block needs to be retransmitted or not, and the transmission data is a code block or a code block group;

In one possible design, before the terminal device instructs the physical layer of the terminal device through the MAC layer to send the transmission data in the storage location to the network device, the method further includes:

and the terminal equipment determines redundancy versions according to the redundancy version sequence.

And the terminal equipment indicates a physical layer of the terminal equipment through the MAC layer, and deletes the transmission block corresponding to the transmission data when the retransmission times are greater than or equal to a second retransmission threshold value.

In a fourth aspect, the present application provides a retransmission processing method, including:

the network equipment sends first transmission information to the terminal equipment;

the first transmission information comprises at least one identification of transmission data, and the transmission data is a code block or a code block group; the first transmission information is used for the terminal equipment to instruct a physical layer of the terminal equipment to generate first feedback information through a MAC layer, wherein the first feedback information characterizes whether at least one transmission data in a transmission block corresponding to the transmission data needs to be retransmitted or not.

In a fifth aspect, the present application provides a retransmission processing method, including:

the network equipment sends second transmission information to the terminal equipment, wherein the second transmission information comprises at least one identifier of transmission data, and the transmission data is a code block or a code block group;

the network equipment receives the transmission data sent by the terminal equipment at the storage position of the terminal equipment, wherein the transmission data is sent by the terminal equipment through a physical layer of the terminal equipment indicated by an MAC layer.

In a sixth aspect, the present application provides a retransmission processing method, including:

the network equipment sends second feedback information to the terminal equipment, wherein the second feedback information characterizes whether at least one transmission data in a transmission block needs to be retransmitted or not, and the transmission data is a code block or a code block group;

In a seventh aspect, the present application provides a terminal device, including:

the first receiving module is used for receiving first transmission information sent by the network equipment, wherein the first transmission information comprises at least one identifier of transmission data, and the transmission data is a code block or a code block group;

the generating module is used for indicating the physical layer of the terminal equipment to generate first feedback information through the MAC layer of the terminal equipment;

In one possible design, the terminal device further includes:

and the merging module is used for indicating the physical layer of the terminal equipment to carry out merging processing through the MAC layer of the terminal equipment after the first receiving module receives the first transmission information sent by the network equipment and the decoding of the retransmitted transmission data fails.

In one possible design, the terminal device further includes:

and the first replacing module is used for indicating the physical layer of the terminal equipment through the MAC layer of the terminal equipment after the first receiving module receives the first transmission information sent by the network equipment, putting the successfully decoded transmission data into a cache, and deleting the first cache data corresponding to the successfully decoded transmission data.

In one possible design, the terminal device further includes:

and the second replacing module is used for not receiving third indicating information when decoding fails after the first receiving module receives the first transmission information sent by the network equipment, wherein the third indicating information indicates that the transmission data with the decoding failure does not carry out data transmission of the transmission data with the decoding failure on resources allocated for the transmission data with the decoding failure, the physical layer of the terminal equipment is indicated by the MAC layer of the terminal equipment, the transmission data with the decoding failure is put into a cache, and second cache data corresponding to the transmission data with the decoding failure is deleted.

In one possible design, the terminal device further includes:

and the cascade module is used for indicating the physical layer of the terminal equipment to cascade through the MAC layer of the terminal equipment when the data in the transmission block corresponding to the transmission data are decoded successfully after the first receiving module receives the first transmission information sent by the network equipment.

In one possible design, the terminal device further includes:

the acquisition module is used for acquiring configuration information before the first receiving module receives the first transmission information sent by the network equipment;

In an eighth aspect, the present application provides a terminal device, including:

the second receiving module is used for receiving second transmission information sent by the network equipment, wherein the second transmission information comprises at least one identifier of transmission data, and the transmission data is a code block or a code block group;

and the first sending module is used for indicating the physical layer of the terminal equipment through the MAC layer of the terminal equipment and sending the transmission data in the storage position to the network equipment.

In one possible design, the terminal device further includes:

the first deleting module is configured to, after the first sending module indicates, through the MAC layer of the network device, the physical layer of the terminal device, and sends the transmission data in the storage location to the network device, instruct, through the MAC layer of the network device, the physical layer of the terminal device, and delete, when the number of retransmissions is greater than or equal to a first retransmission threshold, a transport block corresponding to the transmission data.

In a ninth aspect, the present application provides a terminal device, including:

A third receiving module, configured to receive second feedback information sent by a network device, where the second feedback information characterizes whether at least one transmission data in a transmission block needs to be retransmitted, and the transmission data is a code block or a code block group;

and the second sending module is used for indicating the physical layer of the terminal equipment through the MAC layer of the terminal equipment and sending the transmission data in the storage position to the network equipment.

In one possible design, the terminal device further includes:

the determining module is configured to determine a redundancy version according to a redundancy version order before the second sending module indicates, through the MAC layer of the network device, the physical layer of the terminal device and sends the transmission data in the storage location to the network device.

In one possible design, the terminal device further includes:

and the second deleting module is used for indicating the physical layer of the terminal equipment through the MAC layer of the network equipment after the second sending module indicates the physical layer of the terminal equipment to send the transmission data in the storage position to the network equipment, and deleting the transmission block corresponding to the transmission data when the retransmission times are greater than or equal to a second retransmission threshold value through the MAC layer of the terminal equipment.

In a tenth aspect, the present application provides a network device comprising:

the third sending module is used for sending the first transmission information to the terminal equipment;

In an eleventh aspect, the present application provides a network device, comprising:

a fourth sending module, configured to send second transmission information to a terminal device, where the second transmission information includes at least one identifier of transmission data, where the transmission data is a code block or a code block group;

And a fourth receiving module, configured to receive the transmission data sent by the terminal device at a storage location of the terminal device, where the transmission data is sent by the terminal device through a physical layer that instructs the terminal device by using a MAC layer.

In a twelfth aspect, the present application provides a network device comprising:

a fifth sending module, configured to send second feedback information to a terminal device, where the second feedback information characterizes whether at least one transmission data in a transmission block needs to be retransmitted, and the transmission data is a code block or a code block group;

And a fifth receiving module, configured to receive the transmission data sent by the terminal device at a storage location of the terminal device, where the transmission data is sent by the terminal device through a physical layer that instructs the terminal device by using a MAC layer.

In a thirteenth aspect, the present application provides a computer program for performing the method of the first aspect above when being executed by a processor.

In a fourteenth aspect, the present application provides a computer program for performing the method of the above second aspect when being executed by a processor.

In a fifteenth aspect, the present application provides a computer program for performing the method of the above third aspect when being executed by a processor.

In a sixteenth aspect, the present application provides a computer program for performing the method of the fourth aspect above when being executed by a processor.

In a seventeenth aspect, the present application provides a computer program for performing the method of the above fifth aspect when being executed by a processor.

In an eighteenth aspect, the present application provides a computer program for performing the method of the above sixth aspect when being executed by a processor.

In a nineteenth aspect, the present application provides a program product, such as a computer readable storage medium, comprising the program of the seventh aspect.

In a twentieth aspect, the present application provides a program product, such as a computer readable storage medium, comprising the program of the eighth aspect.

In a twenty-first aspect, the present application provides a program product, such as a computer-readable storage medium, comprising the program of the ninth aspect.

In a twenty-second aspect, the present application provides a program product, such as a computer-readable storage medium, comprising the program of the tenth aspect.

In a twenty-third aspect, the present application provides a program product, such as a computer-readable storage medium, comprising the program of the eleventh aspect.

In a twenty-fourth aspect, the present application provides a program product, such as a computer-readable storage medium, comprising the program of the twelfth aspect.

In a twenty-fifth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the above aspects.

In a twenty-sixth aspect, there is provided a computer readable storage medium having instructions stored therein, which when run on a computer, cause the computer to perform the method of the above aspects.

In the above aspects, the terminal device receives the first transmission information sent by the network device, where the first transmission information includes at least one identifier of transmission data, and the transmission data is a code block or a code block group; the terminal equipment indicates a physical layer of the terminal equipment to generate first feedback information through an MAC layer; wherein the first feedback information characterizes whether at least one transmission data in the transmission block corresponding to the transmission data needs to be retransmitted. Therefore, when downlink retransmission is needed, the network equipment only needs to send the CB or CBG information and the CB or CBG information to be retransmitted to the terminal equipment, and at the moment, the terminal equipment only needs to receive the CB or CBG information and the CB or CBG information to be retransmitted; therefore, retransmission is not carried out on the whole data block TB, system resources can be saved, and the transmission speed and transmission efficiency of retransmission can be improved. Meanwhile, after the physical layer of the terminal finishes decoding each transmission data, the terminal device instructs the physical layer of the terminal device to generate each feedback information of the decoding result of each transmission data through the MAC layer, so that the terminal device feeds the decoding result of each transmission data back to the network device one by one, the network device can know whether the decoding result of the whole TB is successful or failed, the network device can know whether the decoding result of each CB or CBG in one TB is successful or failed, and the network device can retransmit each CB or CBG later conveniently.

Drawings

Fig. 1 is a schematic diagram of an application scenario provided in an embodiment of the present application;

fig. 2 is a second application scenario schematic diagram provided in an embodiment of the present application;

fig. 3 is a flow chart of a retransmission processing method according to an embodiment of the present application;

fig. 4 is a signaling diagram one of a retransmission processing method according to an embodiment of the present application;

fig. 5 is a block diagram of a transport block of a retransmission processing method according to an embodiment of the present application;

fig. 6 is a block diagram of a retransmission processing method according to an embodiment of the present application;

fig. 7 is a data structure one of downlink control information of a retransmission processing method according to an embodiment of the present application;

fig. 8 is a data structure diagram of first transmission information of a retransmission processing method according to an embodiment of the present application;

fig. 9 is a second signaling diagram of a retransmission processing method according to an embodiment of the present application;

fig. 10 is a flowchart of another retransmission processing method according to an embodiment of the present application;

fig. 11 is a signaling diagram of yet another retransmission processing method according to an embodiment of the present application;

fig. 12 is a data structure diagram of first transmission information of another retransmission processing method according to an embodiment of the present application;

fig. 13 is a schematic diagram of a transport block structure of another retransmission processing method according to an embodiment of the present application;

Fig. 14 is a second signaling diagram of another retransmission processing method according to an embodiment of the present application;

fig. 15 is a schematic diagram illustrating a puncturing procedure according to another embodiment of the present application;

fig. 16 is a flowchart of another retransmission processing method according to an embodiment of the present application;

fig. 17 is a signaling diagram of another retransmission processing method according to an embodiment of the present application;

fig. 18 is a schematic cascade diagram of another retransmission processing method according to an embodiment of the present application;

fig. 19 is a second signaling diagram of another retransmission processing method according to an embodiment of the present application;

fig. 20 is a third signaling diagram of another retransmission processing method according to an embodiment of the present application;

fig. 21 is a flowchart of another retransmission processing method according to an embodiment of the present application;

fig. 22 is a signaling diagram of yet another retransmission processing method according to an embodiment of the present application;

fig. 23 is a first data structure diagram of first transmission information of another retransmission processing method according to an embodiment of the present application;

fig. 24 is a second data structure diagram of first transmission information of another retransmission processing method according to an embodiment of the present application;

fig. 25 is a flowchart of another retransmission processing method according to an embodiment of the present application;

Fig. 26 is a signaling diagram of another retransmission processing method according to an embodiment of the present application;

fig. 27 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 28 is a schematic structural diagram of still another terminal device according to an embodiment of the present application;

fig. 29 is a schematic structural diagram of another terminal device according to an embodiment of the present application;

fig. 30 is a schematic structural diagram of still another terminal device according to an embodiment of the present application;

fig. 31 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 32 is a schematic structural diagram of still another network device according to an embodiment of the present application;

fig. 33 is a schematic structural diagram of another network device according to an embodiment of the present application;

fig. 34 is a schematic structural diagram of still another terminal device according to an embodiment of the present application;

fig. 35 is a schematic structural diagram of still another terminal device according to an embodiment of the present application;

fig. 36 is a schematic structural diagram of still another terminal device according to an embodiment of the present application;

fig. 37 is a schematic structural diagram of still another network device according to an embodiment of the present application;

fig. 38 is a schematic structural diagram of still another network device according to an embodiment of the present application;

Fig. 39 is a schematic structural diagram of still another network device according to an embodiment of the present application.

Detailed Description

The embodiments of the present application are applicable to 5G communication systems or other systems that may occur in the future, for example, the present application may be applied to a universal mobile telecommunications system (Universal Mobile Telecommunications System, UMTS) system, a code division multiple access (Code Division Multiple Access, CDMA) system, a wireless local area network (wireless local area network, WLAN) or a future 5G wireless communication system, etc. Some terms used in the present application are explained below to facilitate understanding by those skilled in the art. It should be noted that, when the solution according to the embodiment of the present application is applied to a 5G system or other systems that may occur in the future, names of network devices, terminal devices, and network devices may change, but this does not affect implementation of the solution according to the embodiment of the present application.

1) A terminal device, also called a terminal, user device, is a device that provides voice and/or data connectivity to a user, e.g., a handheld device, an in-vehicle device, etc., with wireless connectivity. Common terminal devices include, for example: a mobile phone, tablet, notebook, palmtop, mobile internet device (mobile internet device, MID), wearable device, wherein the wearable device for example comprises: smart watches, smart bracelets, pedometers, etc.

2) A network device, also known as a radio access network (Radio Access Network, RAN) device, is a device that accesses terminal devices to a wireless network over licensed and unlicensed spectrum, including network devices in various communication schemes, including, for example, but not limited to: a wireless access point (e.g., a wireless local area network access point), a base station, an evolved Node B (eNB), a radio network controller (radio network controller, RNC), a Node B (Node B, NB), a network device controller (Base Station Controller, BSC), a network device transceiver station (Base Transceiver Station, BTS), a Home network device (e.g., home evolved NodeB, or Home Node B, HNB), a BaseBand Unit (BBU), and the like.

3) Network devices, including various types of frequency-based network devices, include, for example, but are not limited to: low frequency network equipment and high frequency network equipment.

4) "plurality" means two or more, and the like. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

Fig. 1 is a schematic diagram of an application scenario provided in an embodiment of the present application. The networking architecture shown in fig. 1 mainly comprises a network device 01 and a terminal device 02. The terminal device may be located within the coverage area of one or more cells provided by the network device, and the cell serving the terminal device may be one or more. When there are one or more cells serving the terminal device, the terminal device may operate in a carrier aggregation (Carrier Aggregation, CA), or dual connectivity (Dual Connectivity, DC), or coordinated multi-point transmission (coordinated multiple point transmission, coMP) manner, where at least one cell provides more than one proposition (Numerology) parameter to simultaneously provide radio resources for the terminal device.

Among them, numerology can be briefly described as follows: the radio interface technology (Radio Interface Technology, RIT) is commonly referred to as the air interface format, implemented by means of Nnumerology parameters. The air interface format is a radio configuration of the terminal device during communication, for example, in a long term evolution (Long Term Evolution, LTE) or even a fifth generation mobile communication system, the RIT may include a subcarrier interval, a cyclic prefix length, a Multiple Access (Multiple Access) mode, a modulation coding mode (Modulation and Coding Scheme, MCS), a Frame Structure (Frame Structure), a radio resource control (Radio Resource Control, RRC), and the like. Different wireless interface technologies can meet the requirements of different bandwidths and time delays of different services, and can be configured to the same terminal equipment in a frequency division or time division mode. For example, assume that there is currently a resource of 100M bandwidth that is divided into two 50M; the terminal device is configured with 15KHZ spacing of the subcarriers transmitting data over the first 50 mhz bandwidth and 30KHZ spacing of the subcarriers transmitting data over the second 50 mhz bandwidth, then the current terminal device is said to be configured with two different radio interface technologies.

The network device in the embodiment of the application can use a millimeter wave frequency Band with relatively higher frequency to communicate with the terminal device, wherein the millimeter wave frequency Band is usually a frequency Band which is more than 6GHz, for example, 28GHz,38GHz, or an enhanced Band (E-Band) frequency Band of a data plane with smaller coverage area; the network device may also communicate with the terminal device using a relatively low frequency band, typically a frequency band less than 6 GHz. The network device in the implementation of the application can be network side devices working at a frequency band above 6GHz (including 6 GHz), such as an access point of Wireless-Fidelity (Wi-Fi) and a base station of next generation communication, such as a gNB or a small station of 5G, a micro station and TRP, and can also be a relay station, an access point, vehicle-mounted equipment, wearable equipment and the like working at a high frequency band; the network device in the implementation of the present application may also be a network side device operating in a frequency band below 6GHz, for example, a base station, an eNB, a TRP, an Access Point (AP), and so on. Wherein the network device may comprise one or more TRPs, wherein the management of the TRPs under each cell may be responsible for by one centralized controller.

The terminal device in the embodiments of the present application may refer to 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 user equipment, a sensor having a network access function, and so on. An access terminal may be, among other things, a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal in a 5G network, etc.

Fig. 2 is a schematic diagram of a second application scenario provided in the embodiment of the present application, as shown in fig. 2, at least one cell is provided under the network device 01, the terminal device 02 is located in the cell of the network device 01, and a communication action is generated between the terminal device 02 and the network device 01. Fig. 3 is a flow chart of a retransmission processing method according to an embodiment of the present application. As shown in fig. 3, the method includes:

s101, the terminal equipment receives first transmission information sent by the network equipment, wherein the first transmission information comprises at least one identification of transmission data, and the transmission data is a code block or a code block group.

Wherein, the first size information of the transmission data, the first indication information of the transmission data and the second indication information of the transmission data; the first indication information characterizes whether the transmission data is retransmission data or not, and the second indication information points to a transmission block corresponding to the transmission data.

S102, the terminal equipment indicates a physical layer of the terminal equipment to generate first feedback information through a MAC layer; wherein the first feedback information characterizes whether at least one transmission data in the transmission block corresponding to the transmission data needs to be retransmitted.

Fig. 4 is a signaling diagram of a retransmission processing method provided in an embodiment of the present application, and fig. 4 is a flowchart for executing a retransmission processing method provided in fig. 3, where, as shown in fig. 4, the method includes:

S11, the terminal equipment receives first transmission information sent by the network equipment, wherein the first transmission information comprises at least one identification of transmission data, and the transmission data is a code block or a code block group. The first transmission information further includes at least one of the following information: first size information of transmission data, first indication information of transmission data transmitting second indication information of the data; the first indication information characterizes whether the transmission data is retransmission data or not, and the second indication information points to a transmission block corresponding to the transmission data.

In this embodiment, fig. 4 relates to a procedure that needs to be performed for retransmitting downlink data when the network device sends the downlink data to the terminal device.

The physical layer of the network device receives a data packet transmitted by the MAC layer of the network device, and the data packet is required to be transmitted to the terminal device by the network device through downlink transmission; the physical layer of the network device needs to process the data packets before the physical layer of the network device sends the data packets to the terminal device. Firstly, a physical layer of a network device needs to add a cyclic redundancy check (Cyclic Redundancy Check, CRC) to an entire Transport Block (TB), where the CRC is used to check whether the entire TB is successfully decoded, and fig. 5 is a Block diagram of the Transport Block of the retransmission processing method provided by the embodiment of the present application, and as shown in fig. 5, the physical layer of the network device adds the CRC to the TB; then, the physical layer of the network device performs segmentation processing on the TB to which the CRC is added to obtain a plurality of Code Blocks (CBs), and the physical layer of the network device needs to add check bits of the CRC to each CB, fig. 6 is a Block diagram of the Code blocks of the retransmission processing method according to the embodiment of the present application, as shown in fig. 6, the physical layer of the network device adds the CRC to each CB, fig. 6 (a) is a Block diagram of one CB, and fig. 6 (B) is a Block diagram of another CB; then the physical layer of the network equipment carries out channel coding on each CB; after channel coding, systematic bits (Systematic bits) and Parity bits (Parity bits) are formed, and then the physical layer of the network device needs to perform rate matching on each CB, where after interleaving and bit gathering, a ring Buffer (Buffer) is formed, and data is fetched from different positions of the ring Buffer, and different redundancy version (Redundancy Version, RV) values for the TB are formed, where different redundancy versions include different Systematic bits and Parity bits; after the redundancy versions of each CB are concatenated, a complete packet is formed. So that the physical layer of the network device sends the complete data packet to the terminal device.

Then, after the network device sends the data packet to the terminal device, the terminal device needs to decode the data packet, and when the terminal device does not decode successfully, or checks unsuccessfully, or the reception is overtime, the data packet cannot be successfully received by the terminal device, and at this time, the network device needs to retransmit the data packet.

The process of sending the retransmission request to the network device by the terminal device is not limited, and the data format of the retransmission request and the like are not limited. For example, when all CBs in one TB are successfully decoded, but the verification for the TB is not successful, the MAC layer of the terminal instructs the physical layer of the terminal device to generate a feedback message characterizing that the retransmission of the entire TB is requested to the network device, which may be a negative acknowledgement character (Not Acknowledgement, NACK) feedback for the TB, optionally, a NACK feedback for each CB among the TBs; or when decoding of one or a certain CB of one TB fails, the MAC layer of the terminal instructs the physical layer of the terminal device to generate a feedback message characterizing to request retransmission of the one or the certain CB to the network device, the feedback message including a plurality of sub-messages, each of the sub-messages being characterized as NACK for one CB.

Then, the network device may send downlink control information (Downlink Control Information, DCI) and a data packet to the terminal device according to the retransmission request, where the DCI includes the first transmission information; after receiving the DCI sent by the network equipment, the terminal equipment analyzes the DCI to obtain first transmission information in the DCI. In the scheme of the application, the network equipment or the terminal equipment divides the TB into at least one CBG, and each CBG comprises at least one CB, wherein one code block is called as transmission data, and one code block group is called as transmission data; in the downlink retransmission process of the present application, DCI sent by a network device to a terminal device may include information such as size information of a TB, resource size information, resource location, redundancy version (Redundant Version, RV) of the TB, etc., and first transmission information parsed from the DCI may include at least one identifier of transmission data, where it is known that each transmission data is CB or CBG; the first transmission information also carries at least one of first size information of transmission data, first indication information of the transmission data and second indication information of the transmission data; the first indication information characterizes whether the transmission data is retransmission data or not, and the second indication information points to a transmission block corresponding to the transmission data. Wherein, the first indication information can adopt new data indication (New Data Indication, NDI), and each transmission data in one data packet shares a value of NDI; the second indication information may be a HARQ process number (HARQ process ID) for transmitting data.

Specifically, DCI physically sent by the network device to the terminal device includes the first transmission information and RV values of the transmission data. In the first transmission information, an identifier is configured for each transmission data; respectively configuring first size information for each transmission data, wherein each first size information can be respective size information of each transmission data, or each first size information can be the sum of the sizes of each transmission data; configuring first indication information for each transmission data together, wherein the first indication information characterizes whether each transmission data is retransmission data or not; the second indication information may be that each transmission data shares one HARQ process number, i.e. there is one HARQ process number in the first transmission information to characterize which transmission block corresponding to each current transmission data is. Configuring an RV value for each transmission data in DCI, wherein each RV value is placed in the DCI; wherein, each transmission data can use different RV versions, and each transmission data has a different RV value respectively; the same RV version may be used for all transmission data, so that only one RV value may be carried in the DCI.

Where DCI is control signaling generated by the physical layer carried in a physical downlink control channel (Physical Downlink Control Channel, PDCCH), DC typically contains resource allocation and other control information for one or more terminal devices.

For example, the network device sends DCI to the terminal device, where the DCI includes first transmission information, a value of RV of each transmission data, size information of TB, resource size information, resource location, a value of RV of TB, and so on; the terminal equipment analyzes the DCI to obtain first transmission information in the DCI and RV values of all transmission data; the first transmission information comprises two CBG identifiers, wherein the first CBG identifier is 2, and the second CBG identifier is 3; the first transmission information includes an HARQ process number of 5; the first transmission information includes 450bytes of the size information of the first CBG, and the second CBG includes 450bytes of the size information of the second CBG, or the first transmission information includes 900bytes of the sum of the size of the first CBG and the size of the second CBG. The DCI includes that the value of RV of the first CBG is 2 and that of RV of the second CBG is 3. For example, fig. 7 is a data structure diagram of Downlink Control Information (DCI) of a retransmission processing method according to an embodiment of the present application, where, as shown in fig. 7, the data structure diagram includes first transmission information and values of RVs of respective transmission data, the first transmission information includes two pieces of CBG information, one HARQ process id=5, an identifier CBG ID 1=2 of the first CBG, rv=2 of the second CBG, an identifier CBG ID 2=3 of the second CBG, rv=3 of the second CBG, and a sum of sizes of the two CBGs is Block size (Block size) =900 bytes, ndi=0. Fig. 8 is a data structure diagram of first transmission information of a retransmission processing method according to an embodiment of the present application, where, as shown in fig. 8, the first transmission information includes two pieces of CBG information, and has one HARQ process id=5, the identifier CBG ID 1=2 of the first CBG, the identifier CBG ID 2=3 of the second CBG, and the sum of the sizes of the two CBGs is Block size=900 bytes, and ndi=0.

For step S11, in the prior art, when the transmitting end needs to retransmit the data packet, the receiving end sends a feedback message to the transmitting end for the entire TB to indicate that the TB is not successfully received, and then causes the receiving end to retransmit the entire TB. In downlink retransmission, the network device may send the entire TB to the terminal device, so as to complete the retransmission process. In the scheme of the application, the network equipment can send the identification information, RV information, size information and the like of one or more CBs needing to be retransmitted in one TB to the terminal equipment, and the network equipment can send the one or more CBs to the terminal equipment; or the identification information, RV information, size information, etc. of one or more CBGs in one TB that need to be retransmitted, and the network device may send the one or more CBGs to the terminal device.

S12, the terminal equipment indicates a physical layer of the terminal equipment to generate first feedback information through a MAC layer; wherein the first feedback information characterizes whether at least one transmission data in the transmission block corresponding to the transmission data needs to be retransmitted.

In this embodiment, fig. 9 is a second signaling diagram of a retransmission processing method according to the embodiment of the present application, as shown in fig. 9, fig. 9 may be used to show the execution process of this step; s21, receiving first transmission information sent by network equipment by the terminal equipment; s22, independently decoding the physical layer of the terminal equipment; s23 is the physical layer of the terminal equipment, which is the MAC layer for sending the respective decoding result of each transmission data to the terminal equipment; s24, the MAC layer of the terminal equipment indicates the physical layer of the terminal equipment to generate first feedback information.

Here, a concept of decoding, which is a concept with respect to encoding, is explained. At the transmitting end, in order to enhance the capability of data to be transmitted in a channel lower than various interferences, the reliability of the system is improved, and the digital signal to be transmitted in the channel is encoded, which is called channel coding; encoding spreads the information carried over several bits over more bits by adding redundant bits, at the cost of having to transmit more bits than is needed for the information. Decoding is a process of rejecting redundant bits and restoring the original bit stream as opposed to encoding.

Specifically, after the physical layer of the terminal equipment receives the DCI and the data packet sent by the network equipment, the physical layer of the terminal equipment may perform independent decoding, and at this time, the physical layer of the terminal may obtain, from the DCI, the value of RV of each transmission data in the current data packet and the first transmission information; the physical layer of the terminal device may send the first transmission information to the MAC layer of the terminal device. The physical layer of the terminal then decodes each transport data in this data packet separately. The physical layer of the terminal device then reports the decoding result to the MAC layer of the terminal device, where the physical layer of the terminal device sends the respective decoding result of each transmission data to the MAC layer, where the decoding result of one transmission data may be a decoding success or a decoding failure.

After receiving the decoding result of each transmission data of the physical layer, if the network reserves a feedback position for the CB and also reserves a feedback position for the TB, when all the data in the TB corresponding to the transmission data fails to be decoded, that is, all the CBs or CBGs in the TB corresponding to the transmission data fail to be decoded, the MAC layer of the terminal device instructs the physical layer of the terminal device to generate a first feedback information, where the first feedback information characterizes the decoding failure of the transport block corresponding to the transmission data, and further needs to perform downlink retransmission on the transport block corresponding to the transmission data. If the network reserves a feedback position for the CB and also reserves a feedback position for the TB, when all data in the TB corresponding to the transmission data is successfully decoded, but the TB check fails, the MAC layer of the terminal device instructs the physical layer of the terminal device to generate first feedback information, where the first feedback information characterizes that decoding of the transport block corresponding to the transmission data fails, and downlink retransmission is needed for the transport block corresponding to the transmission data. If the network reserves a feedback position for the CB and also reserves a feedback position for the TB, when decoding of partial data in the TB corresponding to the transmission data is successful and decoding of partial data fails, the MAC of the terminal equipment indicates the physical layer of the terminal equipment to generate first feedback sub-information aiming at each transmission data, one feedback sub-information characterizes the decoding result of the current transmission data as decoding success or decoding failure, and the MAC of the terminal equipment can indicate the physical layer of the terminal equipment to combine the first feedback sub-information of each transmission data into first feedback information; and further, each transmission data that fails to be decoded needs to be retransmitted downstream.

Or after receiving the decoding result of each transmission data of the physical layer, if the network only reserves the feedback position of the CB, when all the data in the TB corresponding to the transmission data fails to be decoded, that is, all the CBs or CBGs in the TB corresponding to the transmission data fail to be decoded, the MAC layer of the terminal device instructs the physical layer of the terminal device to generate a first feedback information, where the first feedback information includes a message of decoding failure for each transmission data of the transmission block, and further downlink retransmission needs to be performed on each transmission data of which decoding fails. If the network only reserves the feedback position of the CB, when all the data in the TB corresponding to the transmission data are successfully decoded, but the TB check fails, the MAC layer of the terminal device instructs the physical layer of the terminal device to generate a first feedback message, where the first feedback message includes a message indicating that the decoding of each transmission data of the transmission block fails, and downlink retransmission needs to be performed on each transmission data that is successfully decoded. If the network only reserves the feedback position of the CB, when some data in the TB corresponding to the transmission data is successfully decoded and some data is failed to be decoded, the MAC of the terminal equipment instructs the physical layer of the terminal equipment to generate first feedback sub-information aiming at each transmission data, one feedback sub-information characterizes the decoding result of the current transmission data as decoding success or decoding failure, and the MAC of the terminal equipment can instruct the physical layer of the terminal equipment to form first feedback information by using the first feedback sub-information of each transmission data; and further, each transmission data that fails to be decoded needs to be retransmitted downstream.

For example, the data packet has two transmission data CBG ID1 and CBG ID2, after the physical layer of the terminal device independently decodes CBG ID1 and CBG ID2 in the received data packet, the CBG ID1 is successfully decoded, the CBG ID2 is failed to decode, if the partial data decoding is determined to be successful, if the partial data decoding is failed, the MAC of the terminal device receives the decoding result "CBG ID1 is successfully decoded" sent by the physical layer of the terminal device, after the CBG ID2 is failed to decode, the MAC of the terminal device instructs the physical layer of the terminal device to generate Acknowledgement (ACK) feedback or NACK feedback for each transmission data, at this time, the MAC of the terminal device instructs the physical layer of the terminal device to generate ACK for CBG ID1, generates NACK for CBG ID2, and then the physical layer of the terminal device sends ACK/NACK to the network device using the corresponding uplink resource. At this time, the liquid crystal display device, the network device is required to retransmit CBG ID 2.

For another example, if the network reserves a feedback position for the CB and also reserves a feedback position for the TB, the data packet has two transmission data CBG ID1 and CBG ID2, after the physical layer of the terminal device independently decodes CBG ID1 and CBG ID2 in the received data packet, the MAC of the terminal device receives the decoding result "CBG ID1 fails in decoding and CBG ID2 fails in decoding" sent by the physical layer of the terminal device, at this time, the MAC layer of the terminal device also determines that other data in which the two CBGs belong to the same TB have also failed in decoding, and then the MAC of the terminal device instructs the physical layer of the terminal device to generate a first feedback information indicating that the TB corresponding to the transmission data fails in decoding. At this time, the network device is required to retransmit the TB.

The first transmission information sent by the network device is received through the terminal device, wherein the first transmission information comprises at least one identifier of transmission data, and the transmission data is a code block or a code block group; the terminal equipment indicates a physical layer of the terminal equipment to generate first feedback information through an MAC layer; wherein the first feedback information characterizes whether at least one transmission data in the transmission block corresponding to the transmission data needs to be retransmitted. Therefore, when downlink retransmission is needed, the network equipment only needs to send the CB or CBG information and the CB or CBG information to be retransmitted to the terminal equipment, and at the moment, the terminal equipment only needs to receive the CB or CBG information and the CB or CBG information to be retransmitted; therefore, retransmission is not carried out on the whole data block TB, system resources can be saved, and the transmission speed and transmission efficiency of retransmission can be improved. Meanwhile, after the physical layer of the terminal finishes decoding each transmission data, the terminal device instructs the physical layer of the terminal device to generate each feedback information of the decoding result of each transmission data through the MAC layer, so that the terminal device feeds the decoding result of each transmission data back to the network device one by one, the network device can know whether the decoding result of the whole TB is successful or failed, the network device can know whether the decoding result of each CB or CBG in one TB is successful or failed, and the network device can retransmit each CB or CBG later conveniently.

Fig. 10 is a flowchart of another retransmission processing method according to an embodiment of the present application. As shown in fig. 10, the method includes:

s201, terminal equipment acquires configuration information; wherein the configuration information includes at least one of: the format of the downlink control information, the length of the downlink control information, the number of code block groups of the transmission block, and the number of code blocks in one code block group of the transmission block.

S202, the terminal equipment receives first transmission information sent by the network equipment, wherein the first transmission information comprises at least one identification of transmission data, and the transmission data is a code block or a code block group. The first transmission information further includes at least one of the following information: first size information of transmission data, first indication information of transmission data and second indication information of transmission data; the first indication information characterizes whether the transmission data is retransmission data or not, and the second indication information points to a transmission block corresponding to the transmission data.

S203, after the decoding of the retransmitted transmission data fails, the terminal equipment instructs the physical layer of the terminal equipment to perform the merging processing through the MAC layer.

S204, the terminal equipment indicates a physical layer of the terminal equipment through the MAC layer, puts the successfully decoded transmission data into a buffer memory, and deletes first buffer memory data corresponding to the successfully decoded transmission data. And when the terminal equipment fails in decoding, the terminal equipment does not receive third indication information, wherein the third indication information characterizes that the transmission data which fails in decoding does not carry out data transmission of the transmission data which fails in decoding on resources allocated for the transmission data which fails in decoding, and then the terminal equipment indicates a physical layer of the terminal equipment through an MAC layer, the transmission data which fails in decoding is put into a buffer memory, and second buffer memory data corresponding to the transmission data which fails in decoding is deleted.

Fig. 11 is a signaling diagram of another retransmission processing method according to an embodiment of the present application, where fig. 11 is a flowchart for executing another retransmission processing method provided in fig. 10, and as shown in fig. 11, the method includes:

s31, the terminal equipment acquires configuration information; wherein the configuration information includes at least one of: the format of the downlink control information, the length of the downlink control information, the number of code block groups of the transmission block, and the number of code blocks in one code block group of the transmission block.

In this embodiment, before the terminal device and the network device perform the initial transmission of the downlink data transmission, the terminal device needs to acquire configuration information, where the configuration information includes one or more of the format of the downlink control information, the length of the downlink control information, the number of code block groups of the transmission block, and the number of code blocks in one code block group of the transmission block.

The terminal device obtains the configuration information in two modes.

The first way is that the terminal device receives the configuration information sent by the network device, for example, the network base station can send the configuration information to the terminal device through system information or dedicated signaling; in the first manner, the format and length of the DCI carrying the first transmission information may be configured by the network device, so that the number of blind UE tests may be reduced. In the second way, the content of the configuration information is specified in the protocol, and the terminal device can obtain the content of the protocol.

For example, the network device may send the number of code block groups of the transport block to the terminal device through system information or dedicated signaling, and further may fix the number of CBGs in one TB. For example, the network device divides one TB into A CBGs, and the number of CBs in each CBG can be calculated by the following way that the number of CBs included in each CBG except the last CBG in the TB isThe number of CBs included in the last CBG is +.>S is the total number of CBs in TB. If the number of CBs in one TB is x, x is smaller than a, then in order to ensure that one CB exists in each CBG, the CBG may be divided into x CBGs, each CBG has one CB, and the remaining a-x CBGs are not used, but the length of the downlink control information in the DCI is still a; this may reduce the number of blind tests of the terminal device, because the size of the downlink schedule is fixed, and the terminal device may only blindly test the DCI when the length of the downlink control information is a.

For another example, the network device may send the number of code blocks in one code block group of the transport block to the terminal device through system information or dedicated signaling, and thus may fix the number of CBs in each CBG of the TB. For example, if the network device sets that each CBG in the TB includes m CBs, the TB includes S/m CBGs, and S is the total number of CBs in the TB. If the number of CBs is not enough, the number of CBs in the last CBG may be smaller than m; also, the network device needs to avoid that the number of CBGs in a certain TB exceeds the CBG maximum number threshold. The network device may use DCI with a length of the downlink control information or a=s/m.

For another example, the protocol may specify that the maximum value of the CBG number is Y. At this time, the length of the downlink control information of the DCI is only Y. If the number of CBGs of one TB is smaller than Y, for example, Y has a value of 10, and the network device is only configured with a certain terminal device to divide one TB into 8 CBGs, at this time, the last two bits of the length of the downlink control information of the DCI are not used. In this way, no matter how many CBGs a network device configures a terminal device to divide one TB into, the terminal device is busy only blindly detecting DCI of length Y.

Regarding the above division and configuration of the number of code block groups of the transport block, different data may be used in the above different manners according to actual situations, and is not limited.

S32, the terminal equipment receives first transmission information sent by the network equipment, wherein the first transmission information comprises at least one identification of transmission data, and the transmission data is a code block or a code block group. The first transmission information further includes at least one of the following information: first size information of transmission data, first indication information of transmission data and second indication information of transmission data; the first indication information characterizes whether the transmission data is retransmission data or not, and the second indication information points to a transmission block corresponding to the transmission data.

In this embodiment, the terminal device receives the first transmission information sent by the network device. The procedure of this step is referred to as step S11 in the signaling diagram of a retransmission processing method provided in fig. 4, and the principle and procedure are the same as those of step S11.

The difference between step S32 in the present embodiment and step S11 in fig. 4 is described below.

The manner in which the terminal device acquires the first transmission information may be the following. In the first mode, terminal equipment receives DCI sent by network equipment, and the DCI carries first transmission information; and then the terminal equipment analyzes the first transmission information from the DCI. In a second mode, the terminal equipment receives first DCI sent by the network equipment, wherein the first DCI is used for indicating the format and the length of second DCI; then the terminal equipment receives the second DCI according to the format and the length of the second DCI, and the second DCI carries the first transmission information; and then the terminal equipment analyzes the first transmission information from the second DCI. In a third mode, the terminal device receives an RRC signaling, for example, an RRC connection reconfiguration message, where the RRC signaling is used to indicate a format and a length of DCI, and then the terminal device tries to receive the DCI according to the format and the length of the DCI, and carries first transmission information in the DCI; then the terminal equipment analyzes the first transmission information from the DCI; wherein the RRC signaling is control signaling generated and processed by the RRC layer.

The first transmission information further includes first indication information of the transmission data, where the first indication information characterizes whether the transmission data is retransmission data. The first indication information may use NDI, and each transmission data in one data packet shares a value of NDI.

For example, fig. 12 is a data structure diagram of first transmission information of another retransmission processing method according to the embodiment of the present application, as shown in fig. 12, the first transmission information includes two pieces of CBG information, including one HARQ process id=5, the first CBG identifier CBG ID 1=2, the second CBG identifier CBG ID 2=3, and the sum of the sizes of the two CBGs is Block size=900 bytes, ndi=0.

For another example, when indicating which CBs or CBGs are transmitted at this time, a bitmap may be used to indicate which CBs or CBGs are retransmitted, as shown in fig. 13, where fig. 13 is a schematic diagram of a transport block of another retransmission processing method according to an embodiment of the present application, and numeral 1 in fig. 13 represents a CB corresponding to a current transmission position, for example, a bitmap of bits in fig. 1 and 3, where a first bit indicates CB1, a second bit indicates CB2, and so on, and when bits of the second bit and the fourth bit are 1, it is indicated that CB2 and CB4 are transmitted at this time.

S33, the terminal equipment determines whether each transmission data is retransmission data according to the first indication information.

In this embodiment, fig. 14 is a second signaling diagram of another retransmission processing method according to the embodiment of the present application, as shown in fig. 14, fig. 14 may be used to illustrate the execution process of step S32 and step S33; s41, receiving first transmission information sent by a network device by a terminal device, wherein the first transmission information comprises at least one identification of transmission data and first indication information of the transmission data; s42, the physical layer of the terminal equipment sends the first transmission information to the MAC layer of the terminal equipment; s43, the MAC layer of the terminal equipment determines whether each transmission data is retransmission data according to the first indication information; s44, independently decoding the physical layer of the terminal equipment; s45 is the physical layer of the terminal equipment, which is the MAC layer for sending the respective decoding result of each transmission data to the terminal equipment; s46, after decoding failure of the retransmitted transmission data, the MAC layer of the terminal equipment instructs the physical layer of the terminal equipment to carry out merging processing; s47, the MAC layer of the terminal equipment indicates the physical layer of the terminal equipment to generate first feedback information, and the terminal equipment indicates the physical layer of the terminal equipment to perform replacement processing through the MAC layer. The replacement processing means that the terminal equipment indicates the physical layer of the terminal equipment through the MAC layer, puts the successfully decoded transmission data into a buffer memory, and deletes first buffer memory data corresponding to the successfully decoded transmission data; and when the terminal equipment fails in decoding, the terminal equipment does not receive third indication information, wherein the third indication information characterizes that the transmission data which fails in decoding does not carry out data transmission of the transmission data which fails in decoding on resources allocated for the transmission data which fails in decoding, and then the terminal equipment indicates a physical layer of the terminal equipment through an MAC layer, the transmission data which fails in decoding is put into a buffer memory, and second buffer memory data corresponding to the transmission data which fails in decoding is deleted.

Specifically, after the physical layer of the terminal device receives the first transmission information and the data packet sent by the network device, before the physical layer of the terminal device performs independent decoding, the physical layer of the terminal device sends each piece of information in the acquired first transmission information to the MAC layer of the terminal device, where the first transmission information includes at least one identifier of transmission data, the transmission data is a code block or a code block group, and the first transmission information further includes at least one of the following information: first size information of transmission data, first indication information of transmission data, second indication information of transmission data. The physical layer of the terminal device has no logical function or memory function, and it is not known how to use the information in the first transmission information although it can read the first transmission information. Then, the MAC layer of the terminal device receives first indication information of the transmission data, which is a value of NDI. The MAC layer of the terminal equipment records the value of the NDI of the last time of the transmission data; if the MAC layer of the terminal equipment determines that the NDI value of the transmission data received at this time is the same as the NDI value of the last time of the transmission data, the MAC layer of the terminal equipment can determine that the current transmission data is retransmission data; if the MAC layer of the terminal device determines that the NDI value of the transmission data received this time is different from the NDI value of the last time of the transmission data, the MAC layer of the terminal device may determine that the current transmission data is new data.

For example, the first transmission information received by the terminal device has two transmission data, then the MAC layer of the terminal device receives that the NDI value in the first transmission information is 1, the MAC layer of the terminal device records that the NDI value of the last time corresponding to the transmission data is 1, if the NDI of the two times is the same, the MAC layer of the terminal device determines that the NDI received this time is not inverted relative to the NDI of the last time recorded, and the MAC layer of the terminal device can determine that the data received this time is a retransmission packet. If the MAC layer of the terminal device receives that the NDI value in the first transmission information is 1, the MAC layer of the terminal device records that the value of the last NDI corresponding to the transmission data is 0, and if the NDI of the two times is different, the MAC layer of the terminal device determines that the NDI received this time is turned over relative to the NDI sent last time recorded, and the MAC layer of the terminal device can determine that the data received this time is a new data packet.

S34, after the decoding of the retransmitted transmission data fails, the terminal equipment instructs a physical layer of the terminal equipment to carry out combination processing through the MAC layer.

In this embodiment, combining refers to combining multiple signals into one signal for processing. The combination is divided into hard combination and soft combination; wherein, the hard combination refers to the process of firstly decoding (decoding) the received information transmitted by the channel to obtain the decoding result, and then carrying out hard decision on the decoding result of each path to obtain the final received information; soft combining refers to a process of combining information transmitted through a channel, for example, by performing weighted combination according to a signal-to-noise ratio to obtain a combined result, and then decoding the combined result. In current communication systems, soft combining is typically used for combining.

As shown in fig. 14, the physical layer of the terminal device may perform independent decoding, and the physical layer of the terminal device is a MAC layer that transmits the respective decoding results of each transmission data to the terminal device. Then, the MAC layer of the terminal device may determine that each transmission data is currently retransmitted data, and the MAC layer of the terminal device knows that the decoding result of each retransmitted transmission data is successful or failed. Then, the physical layer of the terminal equipment determines a storage position for the retransmitted transmission data with failed decoding, wherein the storage position is the storage position for transmitting the transmission data with failed decoding last time; then, the MAC layer of the terminal device instructs the physical layer of the terminal device to combine the retransmitted transmission data that failed in decoding with the last transmission data at the storage location. The storage location may be a physical layer of the terminal device told by the MAC layer of the terminal device, and at this time, specifically, if the storage location of the transmission data is irregular, the MAC layer of the terminal device needs to indicate the storage location of the transmission data to the physical layer of the terminal device, where the MAC layer of the terminal device finds, for the retransmitted transmission data that fails to decode, the storage location of the transmission data that fails to decode last time according to the HARQ process ID; the physical layer of the terminal device may acquire the storage location from the DCI, where, specifically, since the physical layer of the terminal device has already known the identifier of the transmission data in the first transmission information, since the size of each transmission data may be calculated, and each transmission data is sequentially stored in the memory, the physical layer of the terminal device may find the storage location where the transmission data that has been retransmitted and failed to decode last time, through the identifier of the transmission data.

For example, the data packet has two transmission data, a first CBG ID1, a second CBG ID2, CBG ID 1=2, CBG ID 2=3, ndi=1; it is known that the first CBG is identified as 2 and the second CBG is identified as 3, i.e. CBG2 and CBG3. The MAC layer of the terminal device may determine that CBG2 and CBG3 are retransmission data according to NDI. After the physical layer of the terminal equipment independently decodes the CBG2 and the CBG3 in the received data packet, the CBG2 is successfully decoded, and the CBG3 is failed to be decoded; the physical layer of the terminal equipment sends the decoding result 'CBG 2 successfully decoded' and 'CBG 3 failed decoded' to the MAC layer of the terminal equipment. The physical layer of the terminal equipment determines the storage position of the last transmission CBG3, and the MAC layer of the terminal equipment indicates the physical layer of the terminal equipment to carry out soft combining processing on the currently received CBG3 data and the data on the storage position of the last transmission CBG3.

S35, the terminal equipment indicates a physical layer of the terminal equipment through the MAC layer, the successfully decoded transmission data is put into a buffer memory, and first buffer memory data corresponding to the successfully decoded transmission data is deleted. And when the terminal equipment fails in decoding, the terminal equipment does not receive third indication information, wherein the third indication information characterizes that the transmission data which fails in decoding does not carry out data transmission of the transmission data which fails in decoding on resources allocated for the transmission data which fails in decoding, and then the terminal equipment indicates a physical layer of the terminal equipment through an MAC layer, the transmission data which fails in decoding is put into a buffer memory, and second buffer memory data corresponding to the transmission data which fails in decoding is deleted.

In this embodiment, after S34, the physical layer of the terminal device sends the respective decoding results of each transmission data to the MAC layer, and then, the MAC layer of the terminal device instructs the physical layer of the terminal device to generate the first feedback information according to each decoding result of each transmission data.

The MAC layer of the terminal equipment indicates the physical layer of the terminal equipment to generate first feedback information, meanwhile, the MAC layer of the terminal equipment indicates the physical layer of the terminal equipment, the successfully decoded transmission data is put into a buffer, the first buffer data corresponding to the successfully decoded transmission data is deleted, and then the MAC layer of the terminal equipment indicates the physical layer to replace the successfully decoded transmission data with the data corresponding to the successfully decoded transmission data in the buffer.

In addition, the terminal equipment needs to judge whether third indication information is received or not in a preset time, wherein the third indication information characterizes that the transmission data with the decoding failure does not carry out data transmission of the transmission data with the decoding failure on resources allocated for the transmission data with the decoding failure; if the terminal equipment does not receive the third indication information within the preset time, the MAC layer of the terminal equipment indicates the physical layer of the terminal equipment, the transmission data which is failed to be decoded is put into a buffer memory, and the second buffer memory data corresponding to the transmission data which is failed to be decoded is deleted. If the decoding of the transmission data of the primary transmission fails, the MAC layer of the terminal equipment indicates the physical layer of the terminal equipment, and the transmission data of the primary transmission is put into a buffer; since the retransmission and decoding failure transmission data has been soft-combined in S34, the MAC layer of the terminal device instructs the physical layer of the terminal device with respect to the retransmission and decoding failure transmission data, puts the decoding failure transmission data after soft-combining into the buffer, and simultaneously deletes the second buffer data corresponding to the decoding failure transmission data after soft-combining.

Optionally, the terminal device receives seventh indication information sent by the network device, where the seventh indication information is used to allocate a downlink transmission resource (for example, a time duration of a time domain resource included in the downlink transmission resource is at least one subframe or a time slot or a transmission time interval), and the downlink transmission resource is used to transmit transmission data. The terminal device needs to determine whether third indication information is received within a preset time, and the fourth indication information is used for notifying the terminal device of the starting position of downlink transmission in a subframe or a time slot or a transmission time interval. And the terminal equipment determines that the part or all of the transmission data with the decoding failure does not have the data transmission of the part or all of the transmission data with the decoding failure on the next transmission resource allocated by the eighth indication information according to the third indication information and the seventh indication information. It is also understood that the network device does not acquire the channel of the unlicensed spectrum by listen before talk, resulting in that part or all of the transmission data that failed to decode is not transmitted on the allocated resources. The MAC layer of the terminal equipment indicates the physical layer of the terminal equipment, and part or all of the transmission data which fails to be decoded is put into a buffer memory, and second buffer memory data corresponding to the part or all of the transmission data which fails to be decoded is deleted. If decoding of all the transmission data of the primary transmission fails, the MAC layer of the terminal device instructs the physical layer of the terminal device to put all the transmission data of the primary transmission into a buffer; since the retransmission and decoding failure part or all of the transmission data has been soft-combined in S34, the MAC layer of the terminal device instructs the physical layer of the terminal device with respect to the retransmission and decoding failure part or all of the transmission data, and puts the decoding failure part or all of the transmission data after soft-combining into the buffer while deleting the second buffer data corresponding to the decoding failure part or all of the transmission data after soft-combining. And under the condition that the terminal equipment is configured with discontinuous reception, the terminal equipment receives eighth indication information sent by the network equipment and monitors a downlink control channel in a preset time period so as to receive fourth indication information. The preset time period is as follows: the duration is configured by the base station from the receipt of the seventh indication. And in the preset time period, the terminal equipment receives the third indication information, and the terminal equipment can stop monitoring the downlink control channel, and can also understand that the terminal equipment can not monitor the downlink control channel in the whole preset time period.

The third indication information may be represented by punching, but the present application is not limited thereto. Specifically, if the third indication information can be represented by using puncturing, the terminal device aims at the transmission data with decoding failure, and if the fact that the transmission data with decoding failure is not detected to be punctured in the preset time is judged, the MAC layer of the terminal device indicates the physical layer of the terminal device to put the transmission data with decoding failure into a buffer, and deletes second buffer data corresponding to the transmission data with decoding failure.

For example, a packet has two transmission data CBG id1=2, CBG id2=3, ndi=1; it is known that the first CBG is identified as 2 and the second CBG is identified as 3, i.e. CBG2 and CBG3. The MAC layer of the terminal device may determine that CBG2 and CBG3 are retransmission data according to NDI. After the physical layer of the terminal equipment independently decodes the CBG2 and the CBG3 in the received data packet, the CBG2 is successfully decoded, and the CBG3 is failed to be decoded; the physical layer of the terminal equipment sends the decoding result 'CBG 2 successfully decoded' and 'CBG 3 failed decoded' to the MAC layer of the terminal equipment. The physical layer of the terminal equipment determines the storage position of the CBG3 transmitted last time, and the MAC layer of the terminal equipment indicates the physical layer of the terminal equipment to carry out soft combining processing on the currently received CBG3 data and the data on the storage position of the CBG3 transmitted last time to obtain the CBG3 after soft combining. Then, the MAC layer of the terminal equipment instructs the physical layer to replace the successfully decoded CBG2 with the data corresponding to the CBG2 in the buffer memory; meanwhile, if the terminal equipment does not detect that the CBG3 is marked by punching in the preset time, the MAC layer of the terminal equipment indicates the CBG3 after the physical layer is subjected to soft combining to replace the data corresponding to the CBG3 in the cache; however, if the terminal device detects that the CBG3 is "punctured" in the preset time, the MAC layer of the terminal device will not instruct the physical layer to replace the CBG3 after soft combining, and the data corresponding to the CBG3 in the buffer memory is replaced.

Here, the punching is described. Puncturing refers to a way of occupying transmission resources of other terminal devices. In 5G, when the network device has allocated a downlink resource to the first terminal device and the transmission task of the second terminal device reaches the network device and the transmission task is a service with high latency requirement (i.e. requiring small latency), the network device allocates part or all of the downlink resource allocated to the terminal to another terminal device for use, which is called puncturing the downlink resource, and the transmission task of the terminal device that is preempted the downlink resource is punctured. For example, fig. 15 is a schematic diagram illustrating puncturing of another retransmission processing method according to an embodiment of the present application, where, as shown in fig. 15, a certain block of downlink resources has been allocated to downlink data of terminal equipment a; then the downlink data of the terminal equipment B reaches the network equipment, and the downlink data of the terminal equipment B is a service with very urgent delay requirement and needs to be transmitted as soon as possible, but the downlink resources of the network equipment are already allocated; at this time, the network device temporarily stops transmitting the downlink data of the terminal device a, and starts transmitting the downlink data of the terminal device B, which is called that the downlink data of the terminal device a is punctured; and then after the downlink data transmission of the terminal equipment B is completed, continuing to transmit the downlink data of the terminal equipment A.

As shown in fig. 15, the network device can only indicate in the next control channel which previous data was punctured and which transmission data was punctured. If the terminal device determines that the decoding operation is started after the data is punctured or not punctured after a period of time, a delay is very large, so that the terminal device may be required to start decoding after receiving the transmission data, but whether buffering is performed or not may be determined after a period of time.

The implementation of this embodiment is independent of whether the embodiment shown in fig. 4 is implemented or not, and this embodiment may be implemented independently or together with the embodiment shown in fig. 4.

The embodiment obtains configuration information through terminal equipment; wherein the configuration information includes at least one of: the format of the downlink control information, the length of the downlink control information, the number of code block groups of the transmission block, and the number of code blocks in one code block group of the transmission block. The format and length of DCI can be configured for the terminal equipment when the data is transmitted for the first time in the downlink, and the number of CBGs in the TB is configured, so that the blind detection times of the terminal equipment can be reduced. The terminal equipment determines whether each transmission data is retransmission data or not, and after decoding failure of the retransmission transmission data, the terminal equipment instructs a physical layer of the terminal equipment to carry out combination processing through a MAC layer; then, the terminal equipment indicates a physical layer of the terminal equipment through the MAC layer, the successfully decoded transmission data is put into a buffer memory, and first buffer memory data corresponding to the successfully decoded transmission data is deleted; the terminal equipment indicates a physical layer of the terminal equipment through the MAC layer, puts the transmission data which fails to be decoded into a buffer memory, and deletes second buffer memory data corresponding to the transmission data which fails to be decoded. Furthermore, the processing such as merging and buffering of each transmission data can be completed for each transmission data, the processing of merging and buffering for the whole TB or the whole data packet is not needed, the system resource can be saved, and the processing speed and the processing efficiency of retransmission can be improved.

Fig. 16 is a flowchart of another retransmission processing method according to an embodiment of the present application. As shown in fig. 16, the method includes:

s301, the terminal equipment receives first transmission information sent by the network equipment, wherein the first transmission information comprises at least one identification of transmission data, and the transmission data is a code block or a code block group.

S302, when the terminal equipment decodes the data in the transmission block corresponding to the transmission data successfully, the physical layer of the terminal equipment is indicated to be cascaded through the MAC layer.

Fig. 17 is a signaling diagram of another retransmission processing method provided in an embodiment of the present application, where fig. 17 is a flowchart for executing another retransmission processing method provided in fig. 16, and as shown in fig. 11, the method includes:

s51, the terminal equipment receives first transmission information sent by the network equipment, wherein the first transmission information comprises at least one identification of transmission data, and the transmission data is a code block or a code block group.

In this embodiment, the terminal device receives the first transmission information sent by the network device. The procedure of this step can be referred to as step S11 in the signaling diagram of a retransmission processing method provided in fig. 4, and the principle and procedure are the same as those of step S11; the procedure of this step can be referred to as step S32 in the signaling diagram of yet another retransmission processing method provided in fig. 11, and the principle and procedure are the same as those of step S32.

S52, when the terminal equipment decodes the data in the transmission block corresponding to the transmission data successfully, the MAC layer of the terminal equipment instructs the physical layer of the terminal equipment to carry out cascade connection.

In this embodiment, the MAC layer of the terminal device determines whether or not the transmission data in the TB with the transmission data is decoded successfully; if the decoding is successful, the MAC layer of the terminal equipment indicates the physical layer of the terminal equipment to cascade the transmission data of which the decoding of the TB is successful, and a transmission block is obtained.

The definition of concatenation is explained here. Concatenation refers to that in order to meet the coding requirement, a large transmission block is already divided into a plurality of transmission data at a transmitting end, the transmission data is a code block or a code block group, and then the transmission data is required to be cascaded into a transmission block at a receiving end through concatenation, and the transmission data are connected end to end according to the sequence of the transmission data to obtain the transmission block. For example, fig. 18 is a schematic diagram of cascading of another retransmission processing method according to the embodiment of the present application, as shown in fig. 18, cascading is that after each CB is connected end to end in the order of CB1, CB2, CB3, CB4, one TB is reached.

After the concatenation, the physical layer of the terminal device needs to perform CRC check on the concatenated transport blocks, and the physical layer of the terminal device generates a CRC check result. The physical layer of the terminal device sends the CRC check result to the MAC layer of the terminal device.

If the checking result shows that the checking is passed, the MAC layer of the terminal equipment indicates the physical layer of the terminal equipment to transmit the cascaded transmission blocks to the MAC layer of the terminal equipment, and the MAC layer of the terminal equipment performs splitting and demultiplexing entities.

If the verification result shows that the verification is not passed, the MAC layer of the terminal equipment indicates the physical layer of the terminal equipment to send decoding failure feedback to the network equipment, and the decoding failure feedback represents the decoding failure of the transmission block after cascade connection. Then when the verification result shows that the verification fails, aiming at the transmission block after the cascade connection, which fails the verification, the terminal equipment judges that the transmission data in the transmission block after the cascade connection is not detected to be punched in the preset time, the MAC layer of the terminal equipment instructs the physical layer of the terminal equipment to put the transmission data into a cache, and the cache data corresponding to the transmission data is deleted; for each transmission data in the concatenated transmission blocks, if the terminal device judges that the transmission data in the concatenated transmission blocks is punched in the preset time, the MAC layer of the terminal device does not instruct the physical layer of the terminal device to put the transmission data into the buffer memory.

Optionally, if the verification result indicates that the verification is not passed, the MAC layer of the terminal device instructs the physical layer of the terminal device to send a decoding failure feedback to the network device, where the decoding failure feedback characterizes a decoding failure of the concatenated transport block. And then when the verification result shows that the verification is not passed, aiming at the transmission block after the cascade connection, which is not passed by the verification, the MAC layer of the terminal equipment instructs the physical layer of the terminal equipment to put the transmission data into a buffer memory, and the buffer memory data corresponding to the transmission data is deleted.

Also, in the present embodiment, two specific embodiments are provided.

In a first embodiment, fig. 19 is a second signaling diagram of another retransmission processing method provided in the embodiment of the present application, as shown in fig. 19, including:

s61, the terminal equipment acquires configuration information.

S62, the terminal equipment receives first transmission information sent by the network equipment, wherein the first transmission information comprises at least one identification of transmission data, and the transmission data is a code block or a code block group. The first transmission information further includes at least one of the following information: first size information of transmission data, first indication information of transmission data and second indication information of transmission data; the first indication information characterizes whether the transmission data is retransmission data or not, and the second indication information points to a transmission block corresponding to the transmission data.

S63, the physical layer of the terminal equipment sends the first transmission information to the MAC layer of the terminal equipment.

S64, the MAC layer of the terminal equipment determines whether each transmission data is retransmission data.

S65, the physical layer of the terminal equipment performs independent decoding.

S66, the physical layer of the terminal equipment is a MAC layer which sends the decoding result of each transmission data to the terminal equipment.

S67, after decoding failure of the retransmitted transmission data, the MAC layer of the terminal equipment instructs the physical layer of the terminal equipment to carry out merging processing.

S68, the MAC layer of the terminal equipment indicates the physical layer of the terminal equipment to generate first feedback information, and the terminal equipment indicates the physical layer of the terminal equipment to perform replacement processing through the MAC layer. The replacement processing means that the terminal equipment indicates the physical layer of the terminal equipment through the MAC layer, puts the successfully decoded transmission data into a buffer memory, and deletes first buffer memory data corresponding to the successfully decoded transmission data; and when the terminal equipment fails in decoding, the terminal equipment does not receive third indication information, wherein the third indication information characterizes that the transmission data which fails in decoding does not carry out data transmission of the transmission data which fails in decoding on resources allocated for the transmission data which fails in decoding, and then the terminal equipment indicates a physical layer of the terminal equipment through an MAC layer, the transmission data which fails in decoding is put into a buffer memory, and second buffer memory data corresponding to the transmission data which fails in decoding is deleted.

And S69, when the terminal equipment decodes the data in the transmission block corresponding to the transmission data successfully, the MAC layer of the terminal equipment instructs the physical layer of the terminal equipment to carry out cascade connection.

In this embodiment, the procedure of fig. 19 refers to steps in the signaling diagram of the further retransmission processing method provided in fig. 11, and step S52 of the signaling diagram one of the further retransmission processing method provided in fig. 17.

In a second embodiment, fig. 20 is a signaling diagram three of another retransmission processing method provided in the embodiment of the present application, as shown in fig. 20, including:

s71, the terminal equipment acquires configuration information.

S72, the terminal equipment receives first transmission information sent by the network equipment, wherein the first transmission information comprises at least one identification of transmission data, and the transmission data is a code block or a code block group. The first transmission information further includes at least one of the following information: first size information of transmission data, first indication information of transmission data and second indication information of transmission data; the first indication information characterizes whether the transmission data is retransmission data or not, and the second indication information points to a transmission block corresponding to the transmission data.

S73, the physical layer of the terminal equipment sends the first transmission information to the MAC layer of the terminal equipment.

S74, the MAC layer of the terminal equipment determines whether each transmission data is retransmission data.

S75, the physical layer of the terminal equipment performs independent decoding.

S76, the physical layer of the terminal equipment is a MAC layer which sends the decoding result of each transmission data to the terminal equipment.

And S77, when the terminal equipment decodes the data in the transmission block corresponding to the transmission data successfully, the MAC layer of the terminal equipment instructs the physical layer of the terminal equipment to carry out cascade connection.

In this embodiment, the procedure of fig. 20 is referred to steps S31-S33 in the signaling diagram of the further retransmission processing method provided in fig. 11, and step S52 in the signaling diagram one of the further retransmission processing method provided in fig. 17.

The present embodiment is not dependent on whether or not the embodiment shown in fig. 4 and 11 is implemented, and may be implemented independently or in combination with the embodiment shown in fig. 4 and 11.

The first transmission information sent by the network device is received through the terminal device, wherein the first transmission information comprises at least one identifier of transmission data, and the transmission data is a code block or a code block group; and when the terminal equipment decodes the data in the transmission block corresponding to the transmission data successfully, the physical layer of the terminal equipment is indicated to be cascaded through the MAC layer. After each transmission data of the transmission block is successfully decoded, the MAC layer of the terminal device concatenates each transmission data successfully decoded, so as to facilitate decoding processing of the transmission data.

Fig. 21 is a flowchart of another retransmission processing method according to an embodiment of the present application. As shown in fig. 21, the method includes:

s401, the terminal equipment receives second transmission information sent by the network equipment, wherein the second transmission information comprises at least one identification of transmission data, and the transmission data is a code block or a code block group;

s402, the terminal equipment indicates a physical layer of the terminal equipment through the MAC layer, and the transmission data in the storage position is sent to the network equipment.

Fig. 22 is a signaling diagram of yet another retransmission processing method according to an embodiment of the present application, where fig. 22 is a flowchart for executing another retransmission processing method provided in fig. 21, and as shown in fig. 22, the method includes:

s81, the terminal equipment receives second transmission information sent by the network equipment, wherein the second transmission information comprises at least one identification of transmission data, and the transmission data is a code block or a code block group; the second transmission information further includes at least one of the following information: second size information of the transmission data, fourth indication information of the transmission data and fifth indication information of the transmission data; wherein the fourth indication information characterizes whether the transmission data is retransmission data or not, and the fifth indication information characterizes redundancy version of the transmission data.

In this embodiment, in the scheme of the present application, the network device or the terminal device also divides the TB into at least one CBG, and each CBG includes at least one CB, where we refer to one code block as one transmission data and one code block group as one transmission data.

When the network device does not receive or decodes the uplink data, the network device will schedule the uplink data to the terminal device again to retransmit the uplink data. The network device sends an uplink Grant (UL Grant) to the terminal device, where the UL Grant includes the second transmission information, and the terminal device further obtains the second transmission information.

The second transmission information comprises at least one identifier of transmission data, and at least one of second size information of the transmission data, fourth indication information of the transmission data and fifth indication information of the transmission data is carried in the second transmission information; the fourth indicating information characterizes whether the transmission data is retransmission data or not, and the fifth indicating information indicates RV of the transmission data. The fourth indication information may use NDI, where each transmission data in one data packet shares a value of NDI.

It can be seen that each transmission data has an identification. Each transmission data has a second size information; the second size information may be size information of each transmission data, or the second size information may be a sum of sizes of each transmission data. Each transmission data has an RV value; wherein, each transmission data can use different RV versions, and each transmission data has a different RV value respectively; the same RV version may be used for all transmission data, so that only one RV value may be carried in the second transmission information.

For example, fig. 23 is a first data structure diagram of first transmission information of a retransmission processing method according to an embodiment of the present application, as shown in fig. 23, the second transmission information includes information of a CB, where CB ID 1=3, rv=2, ndi=0, and CB size is Block size=600 bytes.

After the physical layer of the terminal device receives the second transmission information sent by the network device, the physical layer of the terminal device sends the second transmission information to the MAC layer of the terminal device.

S82, the terminal equipment indicates the physical layer of the terminal equipment through the MAC layer, and the transmission data in the storage position is sent to the network equipment.

In this embodiment, the MAC layer of the terminal device instructs the physical layer of the terminal device to complete the retransmission process, and specifically, the MAC layer of the terminal device determines whether to retransmit uplink data according to the value of the fourth indication information NDI in the second transmission information; then, the MAC layer of the terminal equipment indicates the physical layer of the terminal equipment, and according to the RV value of the fifth indication information in the second transmission information and the identification of the transmission data, the storage position of the transmission data on the terminal equipment is determined, and then the terminal equipment can find the transmission data on the storage position; the MAC layer of the terminal device then instructs the physical layer of the terminal device to send the transmission data at the storage location to the network device.

S83, the terminal equipment indicates a physical layer of the terminal equipment through the MAC layer, and when the retransmission times are greater than or equal to a first retransmission threshold value, the transmission block corresponding to the transmission data is deleted.

In this embodiment, in the process of uploading data retransmission, the terminal device needs to maintain the number of retransmission times of the transmission data. When the retransmission times are greater than or equal to the first retransmission threshold, the MAC layer of the terminal device instructs the physical layer of the terminal device to delete the transport block corresponding to the transmission data, and no retransmission of the uplink data is performed.

For example, for a transport block, the number of retransmissions of data transmitted by any one of the transport blocks is added to the number of transmissions of the transport block to obtain a number of times and current_tx_nb, and when the number of times and current_tx_nb are greater than or equal to a first retransmission threshold, the MAC layer of the terminal device instructs the physical layer of the terminal device to empty the HARQ buffer corresponding to the transport block.

The steps S81-S83 above realize the procedure of uplink synchronous adaptive retransmission.

Optionally, the second transmission information further includes: transmitting sixth indication information of the data; wherein the sixth indication information points to a transport block corresponding to the transmission data.

In this embodiment, when the second transmission information further carries the sixth indication information of the transmission data, the uplink asynchronous adaptive retransmission process is targeted. For example, fig. 24 is a second data structure diagram of first transmission information of a retransmission processing method according to an embodiment of the present application, as shown in fig. 24, the second transmission information includes information of one CB, HARQ process id=, 5, CB ID 1=3, rv=2, ndi=0, and CB size is Block size=600 bytes.

At this time, the transmission data may share a sixth indication information, that is, there is a HARQ process number in the second transmission information, to characterize which transmission block corresponding to the current transmission data is. Specifically, after the physical layer of the terminal device receives the second transmission information sent by the network device, the physical layer of the terminal device sends the second transmission information to the MAC layer of the terminal device; the MAC layer of the terminal equipment determines which transmission block corresponding to the current transmission data is according to the HARQ process number, and then the MAC layer of the terminal equipment determines whether to retransmit the uplink data according to the value of fourth indication information NDI in the second transmission information; then, the MAC layer of the terminal equipment indicates the physical layer of the terminal equipment, and according to the RV value of the fifth indication information in the second transmission information and the identification of the transmission data, the storage position of the transmission data on the terminal equipment is determined, and then the terminal equipment can find the transmission data on the storage position; the MAC layer of the terminal device then instructs the physical layer of the terminal device to send the transmission data at the storage location to the network device.

The present embodiment is not dependent on whether or not the embodiments shown in fig. 4, 11, and 17 are implemented, and may be implemented independently or in combination with the embodiments shown in fig. 4, 11, and 17.

The embodiment receives second transmission information sent by the network device through the terminal device, wherein the second transmission information comprises at least one identifier of transmission data, and the transmission data is a code block or a code block group; the terminal equipment indicates a physical layer of the terminal equipment through the MAC layer and sends the transmission data in the storage position to the network equipment; and the terminal equipment indicates a physical layer of the terminal equipment through the MAC layer, and deletes the transmission block corresponding to the transmission data when the retransmission times are greater than or equal to a first retransmission threshold value. The uplink synchronous self-adaptive retransmission process is provided, so that when uplink retransmission is needed, the network equipment only needs to send CB or CBG information and CB or CBG information to be retransmitted to the terminal equipment, and at the moment, the terminal equipment only needs to send CB or CBG to be retransmitted; therefore, retransmission is not carried out on the whole data block TB, system resources can be saved, and the transmission speed and transmission efficiency of retransmission can be improved. Seven indication information can be added in the second transmission information, and the sixth indication information points to the transmission block corresponding to the transmission data, so that an uplink asynchronous self-adaptive retransmission process is provided.

Fig. 25 is a flowchart of another retransmission processing method according to an embodiment of the present application. As shown in fig. 25, the method includes:

s501, the terminal equipment receives second feedback information sent by the network equipment, wherein the second feedback information characterizes whether at least one transmission data in the transmission block needs to be retransmitted, and the transmission data is a code block or a code block group.

S502, the terminal equipment determines redundancy versions according to the redundancy version sequence.

S503, the terminal equipment indicates the physical layer of the terminal equipment through the MAC layer, and the transmission data in the storage position is sent to the network equipment.

Fig. 26 is a signaling diagram of another retransmission processing method provided in an embodiment of the present application, and fig. 26 is a flowchart for executing another retransmission processing method provided in fig. 25, where the method includes:

s111, the terminal equipment receives second feedback information sent by the network equipment, wherein the second feedback information characterizes whether at least one transmission data in the transmission block needs to be retransmitted, and the transmission data is a code block or a code block group.

When the network device does not receive or decodes the uplink data, the network device will schedule the uplink data to the terminal device again to retransmit the uplink data. The network device sends feedback sub-information for each transmission data to the terminal device, each feedback sub-information indicating that the transmission data corresponding to the feedback sub-information is not successfully received. Each feedback sub-information constitutes second feedback information. If the feedback sub-information indicates that the transmission data corresponding to the feedback sub-information is not successfully received, the transmission data needs to be retransmitted; if the feedback sub-information indicates that the transmission data corresponding to the feedback sub-information is successfully received, retransmission of the transmission data is not needed.

Specifically, the terminal device does not receive uplink resource scheduling information, but only receives ACK/NACK feedback for CB or CBG.

And S112, the terminal equipment determines redundancy versions according to the redundancy version sequence.

In this embodiment, the terminal device needs to maintain the redundancy version RV itself. The terminal equipment determines redundancy versions according to the redundancy version order.

For example, the terminal device selects a redundancy version with redundancy version rv=0 according to the redundancy version order 0, 2, 3, 1, so as to perform uplink data retransmission of the transmission data; the terminal equipment receives the second feedback sub-information aiming at the transmission data, and the transmission data is still not successfully received by the network equipment at the moment; then, the terminal device selects a redundancy version of redundancy version rv=2 according to redundancy version orders 0, 2, 3, and 1, and then performs uplink data retransmission of the transmission data; and so on.

S113, the terminal equipment indicates the physical layer of the terminal equipment through the MAC layer, and the transmission data in the storage position is sent to the network equipment.

In this embodiment, the MAC layer of the terminal device indicates the physical layer of the terminal device, and determines, according to the second feedback sub-information, a storage location of the transmission data on the terminal device, and then the terminal device may find that the transmission data is transmitted on the storage location; the MAC layer of the terminal device then instructs the physical layer of the terminal device to send the transmission data at the storage location to the network device.

S114, the terminal equipment indicates a physical layer of the terminal equipment through the MAC layer, and when the retransmission times are greater than or equal to a second retransmission threshold value, the transmission block corresponding to the transmission data is deleted.

In this embodiment, in the process of uploading data retransmission, the terminal device needs to maintain the number of retransmission times of the transmission data. When the retransmission times is greater than or equal to the second retransmission threshold, the MAC layer of the terminal device instructs the physical layer of the terminal device to delete the transport block corresponding to the transmission data, and no retransmission of the uplink data is performed.

For example, for a transport block, the number of retransmissions of each transport data belonging to the transport block is accumulated, and when the sum of the accumulated number of retransmissions of any one transport data plus the number of retransmissions of the transport block, current_tx_nb, is greater than or equal to the second retransmission threshold, the MAC layer of the terminal device instructs the physical layer of the terminal device to empty the HARQ buffer corresponding to the transport block.

The above steps S111-S114 realize the procedure of uplink synchronous non-adaptive retransmission.

The present embodiment is not dependent on whether or not the embodiments shown in fig. 4, 11, and 17 are implemented, and may be implemented independently or in combination with the embodiments shown in fig. 4, 11, and 17. The present embodiment is not dependent on whether the embodiment shown in fig. 22 is implemented, and may be implemented independently or simultaneously with the embodiment shown in fig. 22.

In this embodiment, the terminal device receives second feedback information sent by the network device, where the second feedback information characterizes whether at least one transmission data in the transmission block needs to be retransmitted, and the transmission data is a code block or a code block group; the terminal equipment determines redundancy versions according to the redundancy version sequence; the terminal device indicates the physical layer of the terminal device through the MAC layer, and transmits the transmission data in the storage position to the network device. The uplink synchronous non-self-adaptive retransmission process is provided, so that when uplink retransmission is needed, the network equipment only needs to send feedback sub-information of the CB or the CBG which needs to be retransmitted, such as NACK feedback information, to the terminal equipment, and at the moment, the terminal equipment only needs to send the CB or the CBG which needs to be retransmitted; therefore, retransmission is not carried out on the whole data block TB, system resources can be saved, and the transmission speed and transmission efficiency of retransmission can be improved.

Fig. 27 is a schematic structural diagram of a terminal device according to an embodiment of the present application. As shown in fig. 27, the terminal device includes:

a first receiving module 271, configured to receive first transmission information sent by a network device, where the first transmission information includes at least one identifier of transmission data, and the transmission data is a code block or a code block group;

a generating module 272, configured to instruct, by using a MAC layer of the terminal device, a physical layer of the terminal device to generate first feedback information; wherein the first feedback information characterizes whether at least one transmission data in the transmission block corresponding to the transmission data needs to be retransmitted.

The first receiving module 271 may perform step S101 of the method shown in fig. 3, that is, the first receiving module 271 may perform step S11 of the method shown in fig. 4. The generation module 272 may perform step S102 of the method shown in fig. 3, i.e., the generation module 272 may perform step S12 of the method shown in fig. 4.

The terminal device of the embodiment shown in fig. 27 may be used to implement the technical solutions of the embodiments shown in fig. 2 to 9 in the above-mentioned method, and the implementation principle and technical effects are similar, and are not repeated here.

Fig. 28 is a schematic structural diagram of still another terminal device according to an embodiment of the present application. On the basis of the terminal device shown in fig. 27, as shown in fig. 28, in the terminal device, at least one of the following information is further included in the first transmission information:

First size information of transmission data, first indication information of transmission data and second indication information of transmission data;

Terminal equipment, still include:

an obtaining module 281, configured to obtain configuration information before the first receiving module 271 receives the first transmission information sent by the network device; wherein the configuration information includes at least one of: the format of the downlink control information, the length of the downlink control information, the number of code block groups of the transmission block, and the number of code blocks in one code block group of the transmission block. Wherein the acquisition module 281 may perform step S201 of the method shown in fig. 10, i.e., the acquisition module 281 may perform step S31 of the method shown in fig. 11.

The merging module 282 is configured to instruct, by the MAC layer of the terminal device, the physical layer of the terminal device to perform merging processing after decoding failure for the retransmitted transmission data after the first receiving module 271 receives the first transmission information sent by the network device. The merging module 282 may perform step S203 of the method shown in fig. 10, that is, the merging module 282 may perform step S34 of the method shown in fig. 11.

The first replacing module 283 is configured to instruct, by the MAC layer of the terminal device, the physical layer of the terminal device to place the successfully decoded transmission data into the buffer after the first receiving module 271 receives the first transmission information sent by the network device, and delete the first buffered data corresponding to the successfully decoded transmission data. The first replacement module 283 may perform part of the content of step S204 of the method shown in fig. 10, i.e., the first replacement module 283 may perform part of the content of step S35 of the method shown in fig. 11.

The second replacing module 284 is configured to, after the first receiving module 271 receives the first transmission information sent by the network device, not receive third indication information when decoding fails, where the third indication information indicates that the decoding-failed transmission data is not transmitted on the resources allocated for the decoding-failed transmission data, instruct, by using the MAC layer of the terminal device, a physical layer of the terminal device, place the decoding-failed transmission data into a buffer, and delete second buffered data corresponding to the decoding-failed transmission data. The second replacing module 284 may perform part of the content of step S204 of the method shown in fig. 10, that is, the second replacing module 284 may perform part of the content of step S35 of the method shown in fig. 11.

And the concatenation module 285 is configured to instruct, by the MAC layer of the terminal device, the physical layer of the terminal device to perform concatenation when the data in the transport block corresponding to the transmission data are decoded successfully after the first receiving module 271 receives the first transmission information sent by the network device. The cascade module 285 may perform step S302 of the method shown in fig. 16, that is, the cascade module 285 may perform step S52 of the method shown in fig. 17.

The terminal device of the embodiment shown in fig. 28 may be used to implement the technical solutions of the embodiments shown in fig. 10 to 20 in the above-mentioned method, and the implementation principle and technical effects are similar, and are not repeated here.

The present embodiment is not dependent on whether or not the embodiment shown in fig. 27 is implemented, and may be implemented independently or in combination with the embodiment shown in fig. 27.

Fig. 29 is a schematic structural diagram of another terminal device according to an embodiment of the present application. As shown in fig. 29, the terminal device includes:

the second receiving module 291 is configured to receive second transmission information sent by the network device, where the second transmission information includes at least one identifier of transmission data, and the transmission data is a code block or a code block group. The second receiving module 291 may perform step S401 of the method shown in fig. 21, that is, the second receiving module 291 may perform step S81 of the method shown in fig. 22.

The first sending module 292 is configured to instruct, by using a MAC layer of the terminal device, a physical layer of the terminal device, and send the transmission data in the storage location to the network device. The first sending module 292 may perform step S402 of the method shown in fig. 21, that is, the first sending module 292 may perform step S82 of the method shown in fig. 22.

Optionally, the second transmission information further includes at least one of the following information:

second size information of the transmission data, fourth indication information of the transmission data and fifth indication information of the transmission data; wherein the fourth indication information characterizes whether the transmission data is retransmission data or not, and the fifth indication information characterizes redundancy version of the transmission data.

Terminal equipment, still include:

the first deleting module 293 is configured to instruct, by the first sending module 292, the physical layer of the terminal device through the MAC layer of the network device, and after sending the transmission data in the storage location to the network device, instruct, by the MAC layer of the network device, the physical layer of the terminal device, and delete the transport block corresponding to the transmission data when the number of retransmissions is greater than or equal to a first retransmission threshold. The first deleting module 293 may execute step S83 of the method shown in fig. 22.

The terminal device of the embodiment shown in fig. 29 may be used to implement the technical solutions of the embodiments shown in fig. 21 to 24 in the above-mentioned method, and the implementation principle and technical effects are similar, and are not repeated here.

The present embodiment is not dependent on whether or not the embodiment shown in fig. 27 and 28 is implemented, and may be implemented independently or in combination with the embodiment shown in fig. 27 and 28.

Fig. 30 is a schematic structural diagram of still another terminal device according to an embodiment of the present application. As shown in fig. 30, the terminal device includes:

the third receiving module 311 is configured to receive second feedback information sent by the network device, where the second feedback information characterizes whether at least one transmission data in the transmission block needs to be retransmitted, and the transmission data is a code block or a code block group. The third receiving module 311 may perform step S501 of the method shown in fig. 25, that is, the third receiving module 311 may perform step S111 of the method shown in fig. 26.

The second sending module 312 is configured to instruct, by the MAC layer of the terminal device, the physical layer of the terminal device to send the transmission data in the storage location to the network device. The second transmitting module 312 may perform step S503 of the method shown in fig. 25, that is, the second transmitting module 312 may perform step S113 of the method shown in fig. 26.

Terminal equipment, still include:

a determining module 313, configured to determine redundancy versions according to the redundancy version order before the second sending module 312 instructs the physical layer of the terminal device through the MAC layer of the network device to send the transmission data in the storage location to the network device. The determining module 313 may perform step S502 of the method shown in fig. 25, that is, the determining module 313 may perform step S112 of the method shown in fig. 26.

The second deleting module 314 is configured to, after the second sending module 312 indicates the physical layer of the terminal device through the MAC layer of the network device, send the transmission data in the storage location to the network device, indicate the physical layer of the terminal device through the MAC layer of the terminal device, and delete the transport block corresponding to the transmission data when the number of retransmissions is greater than or equal to the second retransmission threshold. The second deleting module 314 may execute step S114 of the method shown in fig. 26.

The terminal device of the embodiment shown in fig. 30 may be used to implement the technical solutions of the embodiments shown in fig. 25 to 26 in the above-mentioned method, and the implementation principle and technical effects are similar, and are not repeated here.

The present embodiment is not dependent on whether or not the embodiment shown in fig. 27, 28, and 29 is implemented, and may be implemented independently, together with the embodiment shown in fig. 27 and 28, or on a different device from the embodiment shown in fig. 29.

Fig. 31 is a schematic structural diagram of a network device according to an embodiment of the present application. As shown in fig. 31, the network device includes:

a third sending module 321, configured to send the first transmission information to the terminal device; the first transmission information comprises at least one identification of transmission data, and the transmission data is a code block or a code block group; the first transmission information is used for the terminal equipment to instruct the physical layer of the terminal equipment to generate first feedback information through the MAC layer, wherein the first feedback information characterizes whether at least one transmission data in the transmission block corresponding to the transmission data needs to be retransmitted or not. The third sending module 321 may perform step S101 of the method shown in fig. 3, that is, the third sending module 321 may perform step S11 of the method shown in fig. 4.

Optionally, the first transmission information further includes at least one of the following information:

The network device of the embodiment shown in fig. 31 may be used to implement the technical solutions of the embodiments shown in fig. 2 to 20 in the above-mentioned method, and the implementation principle and technical effects are similar, and are not repeated here.

Fig. 32 is a schematic structural diagram of still another network device according to an embodiment of the present application. As shown in fig. 32, the network device includes:

a fourth sending module 331, configured to send second transmission information to the terminal device, where the second transmission information includes at least one identifier of transmission data, and the transmission data is a code block or a code block group; the fourth transmitting module 331 may perform step S401 of the method shown in fig. 21, that is, the fourth transmitting module 331 may perform step S81 of the method shown in fig. 22.

And a fourth receiving module 332, configured to receive transmission data sent by the terminal device at a storage location of the terminal device, where the transmission data is sent by the terminal device through a physical layer of the MAC layer indication terminal device. The fourth receiving module 332 may perform step S402 of the method shown in fig. 21, that is, the fourth receiving module 332 may perform step S82 of the method shown in fig. 22.

The network device of the embodiment shown in fig. 32 may be used to implement the technical solutions of the embodiments shown in fig. 21 to 24 in the above-mentioned method, and the implementation principle and technical effects are similar, and are not repeated here.

The present embodiment is not dependent on whether or not the embodiment shown in fig. 31 is implemented, and may be implemented independently or in combination with the embodiment shown in fig. 31.

Fig. 33 is a schematic structural diagram of another network device according to an embodiment of the present application. As shown in fig. 33, the network device includes:

a fifth sending module 341, configured to send second feedback information to the terminal device, where the second feedback information characterizes whether at least one transmission data in the transmission block needs to be retransmitted, and the transmission data is a code block or a code block group. The fifth transmitting module 341 may perform step S501 of the method shown in fig. 25, that is, the fifth transmitting module 341 may perform step S111 of the method shown in fig. 26.

And a fifth receiving module 342, configured to receive transmission data sent by the terminal device at a storage location of the terminal device, where the transmission data is sent by the terminal device through a physical layer of the MAC layer indication terminal device. The fifth receiving module 342 may perform step S503 of the method shown in fig. 25, that is, the fifth receiving module 342 may perform step S113 of the method shown in fig. 26.

The network device of the embodiment shown in fig. 33 may be used to implement the technical solutions of the embodiments shown in fig. 25 to 25 in the above-mentioned method, and the implementation principle and technical effects are similar, and are not repeated here.

The present embodiment is not dependent on whether or not the embodiment shown in fig. 31 and 32 is implemented, and may be implemented independently, together with the embodiment shown in fig. 31, or on a different device from the embodiment shown in fig. 32.

Fig. 34 is a schematic structural diagram of still another terminal device according to an embodiment of the present application. As shown in fig. 34, the terminal device includes: a receiver 231, a transmitter 232, a processor 233, and a memory 234. The receiver 231 is configured to receive first transmission information sent by a network device, where the first transmission information includes at least one identifier of transmission data, and the transmission data is a code block or a code block group. The processor 233 is configured to instruct, by using a MAC layer of the terminal device, a physical layer of the terminal device to generate first feedback information; wherein the first feedback information characterizes whether at least one transmission data in the transmission block corresponding to the transmission data needs to be retransmitted. At this time, the receiver 231 may implement the function of the first receiving module 271 in the terminal device shown in fig. 27, and further, the receiver 231 may perform step S101 of the method shown in fig. 3, or the receiver 231 may perform step S11 of the method shown in fig. 4; the processor 233 may implement the function of the generation module 272 in the terminal device shown in fig. 28, and further, the processor 233 may perform step S102 of the method shown in fig. 3, or the processor 233 may perform step S12 of the method shown in fig. 4.

Optionally, the first transmission information further includes at least one of the following information: first size information of transmission data, first indication information of transmission data and second indication information of transmission data; the first indication information characterizes redundancy version of the transmission data, the first indication information characterizes whether the transmission data is retransmission data, and the second indication information points to a transmission block corresponding to the transmission data.

Optionally, the processor 233 is further configured to instruct, by the MAC layer of the terminal device, the physical layer of the terminal device to perform the merging process after the receiver 231 receives the first transmission information sent by the network device and after decoding of the retransmitted transmission data fails. At this time, the processor 233 may implement the function of the combining module 282 in the terminal device shown in fig. 28, and further, the processor 233 may perform step S203 of the method shown in fig. 10, or the processor 233 may perform step S34 of the method shown in fig. 11.

Optionally, the processor 233 is further configured to instruct, by the MAC layer of the terminal device, the physical layer of the terminal device to place the successfully decoded transmission data into the buffer after the receiver 231 receives the first transmission information sent by the network device, and delete the first buffer data corresponding to the successfully decoded transmission data. At this time, the processor 233 may implement the function of the first replacement module 283 in the terminal device shown in fig. 28, and further, the processor 233 may perform part of the content of step S204 of the method shown in fig. 10, or the processor 233 may perform part of the content of step S35 of the method shown in fig. 11.

Optionally, the processor 233 is further configured to, after the receiver 231 receives the first transmission information sent by the network device, not receive third indication information when decoding fails, where the third indication information indicates that the decoding-failed transmission data is not transmitted on the resources allocated for the decoding-failed transmission data, instruct, by using the MAC layer of the terminal device, the physical layer of the terminal device, place the decoding-failed transmission data into a buffer, and delete the second buffered data corresponding to the decoding-failed transmission data. At this time, the processor 233 may implement the function of the second replacing module 284 in the terminal device shown in fig. 28, and further, the processor 233 may perform part of the content of step S204 of the method shown in fig. 10, or the processor 233 may perform part of the content of step S35 of the method shown in fig. 11.

Optionally, the processor 233 is further configured to instruct, by the MAC layer of the terminal device, the physical layer of the terminal device to perform concatenation when the data in the transport block corresponding to the transmission data are decoded successfully after the receiver 231 receives the first transmission information sent by the network device. At this time, the processor 233 may implement the function of the cascade module 285 in the terminal device shown in fig. 28, and further, the processor 233 may perform step S302 of the method shown in fig. 16, or the processor 233 may perform step S52 of the method shown in fig. 17.

Optionally, the processor 233 is further configured to obtain the configuration information before the receiver 231 receives the first transmission information sent by the network device; wherein the configuration information includes at least one of: the format of the downlink control information, the length of the downlink control information, the number of code block groups of the transmission block, and the number of code blocks in one code block group of the transmission block. At this time, the processor 233 may implement the function of the acquisition module 281 in the terminal device shown in fig. 28, and further, the processor 233 may perform step S201 of the method shown in fig. 10, or the processor 233 may perform step S31 of the method shown in fig. 11.

The terminal device of the embodiment shown in fig. 34 may be used to implement the technical solution of the foregoing method embodiment, and its implementation principle and technical effects are similar, and are not described herein again.

The receiver 231 and the transmitter 232 may be connected to an antenna. In the downstream direction, the receiver 231 and the transmitter 232 receive information sent by the network device through the antenna, and send the information to the processor 233 for processing. In the upstream direction, the processor 233 processes data of the terminal device and transmits the processed data to the network device through the transmitter 232.

The memory 234 is used to store a program for implementing the above method embodiment, or the respective modules of the embodiment shown in fig. 28, and the processor 233 calls the program to perform the operations of the above method embodiment to implement the respective modules shown in fig. 28.

Alternatively, part or all of the above modules may be implemented in the form of an integrated circuit embedded in a chip of the device. And they may be implemented separately or integrated together. That is, the above modules may be configured as one or more integrated circuits implementing the above methods, for example: one or more specific integrated circuits (Application Specific Integrated Circuit, ASIC), or one or more microprocessors (digital singnal processor, DSP), or one or more field programmable gate arrays (Field Programmable Gate Array, FPGA), or the like.

Fig. 35 is a schematic structural diagram of still another terminal device according to an embodiment of the present application. As shown in fig. 35, the terminal device includes: receiver 241, transmitter 242, processor 243, memory 244. The receiver 241 is configured to receive second transmission information sent by the network device, where the second transmission information includes at least one identifier of transmission data, and the transmission data is a code block or a code block group. The transmitter 242 is configured to instruct the physical layer of the terminal device through the MAC layer of the terminal device to transmit the transmission data in the storage location to the network device. At this time, the receiver 241 may implement the function of the second receiving module 291 in the terminal device shown in fig. 29, and further, the receiver 241 may perform step S401 of the method shown in fig. 21, or the receiver 241 may perform step S81 of the method shown in fig. 22. At this time, the transmitter 242 may implement the function of the first transmitting module 292 in the terminal device shown in fig. 29, and further, the transmitter 242 may perform step S402 of the method shown in fig. 21, or the transmitter 242 may perform step S82 of the method shown in fig. 22.

Optionally, the processor 243 is configured to, after the transmitter 242 instructs the physical layer of the terminal device through the MAC layer of the network device to send the transmission data in the storage location to the network device, instruct the physical layer of the terminal device through the MAC layer of the network device, and delete the transport block corresponding to the transmission data when the number of retransmissions is greater than or equal to the first retransmission threshold. At this time, the processor 243 may implement the function of the first deletion module 293 in the terminal device illustrated in fig. 29, and further, the processor 243 may perform step S83 of the method illustrated in fig. 22.

The memory 244 is used to store a program implementing the above method embodiment, or the respective modules of the embodiment shown in fig. 29, and the processor 243 calls the program to perform the operations of the above method embodiment to implement the respective modules shown in fig. 29.

Fig. 36 is a schematic structural diagram of still another terminal device according to an embodiment of the present application. As shown in fig. 35, the terminal device includes: a receiver 251, a transmitter 252, a processor 253, a memory 254. The receiver 251 is configured to receive second feedback information sent by the network device, where the second feedback information characterizes whether at least one transmission data in the transmission block needs to be retransmitted, and the transmission data is a code block or a code block group. The transmitter 252 is configured to instruct the physical layer of the terminal device through the MAC layer of the terminal device to transmit the transmission data in the storage location to the network device. At this time, the receiver 251 may implement the function of the third receiving module 311 in the terminal device shown in fig. 30, and further, the receiver 251 may perform step S501 of the method shown in fig. 25, or the receiver 251 may perform step S111 of the method shown in fig. 26. At this time, the transmitter 252 may implement the function of the second transmitting module 312 in the terminal device shown in fig. 30, and further, the transmitter 252 may perform step S503 of the method shown in fig. 25, or the transmitter 252 may perform step S113 of the method shown in fig. 26.

Optionally, the processor 253 is configured to determine the redundancy versions according to the redundancy version order before the transmitter 252 instructs the physical layer of the terminal device through the MAC layer of the network device to transmit the transmission data at the storage location to the network device. At this time, the processor 253 may implement the function of the determination module 313 in the terminal device shown in fig. 30, and further, the processor 253 may perform step S502 of the method shown in fig. 25, or the processor 253 may perform step S112 of the method shown in fig. 26.

Optionally, the processor 253 is further configured to, after the transmitter 252 instructs the physical layer of the terminal device through the MAC layer of the network device to send the transmission data in the storage location to the network device, instruct the physical layer of the terminal device through the MAC layer of the terminal device, and delete the transport block corresponding to the transmission data when the number of retransmissions is greater than or equal to the second retransmission threshold. At this time, the processor 253 may implement the function of the second deletion module 314 in the terminal device shown in fig. 30, and further, the processor 253 may perform step S114 of the method shown in fig. 26.

The memory 254 is used to store a program implementing the above method embodiment, or the respective modules of the embodiment shown in fig. 30, and the processor 253 calls the program to perform the operations of the above method embodiment to implement the respective modules shown in fig. 30.

It should be noted that, in the embodiment of the present application, the transmitter included in the terminal device in fig. 34 to 36 corresponds to the foregoing method embodiment and may perform a transmitting action, the processor performs processing actions such as processing, determining, obtaining, and the receiver may perform a receiving action. Reference is specifically made to the method embodiments described above.

Fig. 37 is a schematic structural diagram of still another network device according to an embodiment of the present application. As shown in fig. 37, the network device includes a transmitter 261, a receiver 262, and a processor 263, wherein the transmitter 261 is configured to transmit first transmission information to a terminal device; the first transmission information comprises at least one identification of transmission data, and the transmission data is a code block or a code block group; the first transmission information is used for the terminal equipment to instruct the physical layer of the terminal equipment to generate first feedback information through the MAC layer, wherein the first feedback information characterizes whether at least one transmission data in the transmission block corresponding to the transmission data needs to be retransmitted or not. At this time, the transmitter 261 may implement the function of the third transmission module 321 in the network device shown in fig. 31, and further, the transmitter 261 may perform step S101 of the method shown in fig. 3, or the transmitter 261 may perform step S11 of the method shown in fig. 4.

Optionally, the first transmission information further includes at least one of the following information: first size information of transmission data, first indication information of transmission data and second indication information of transmission data; the first indication information characterizes whether the transmission data is retransmission data or not, and the second indication information points to a transmission block corresponding to the transmission data.

The network device of the embodiment shown in fig. 37 may be used to execute the technical solution of the above method embodiment, or the program of each module of the embodiment shown in fig. 31, and the processor 263 invokes the program to execute the operation of the above method embodiment to implement each module shown in fig. 31.

The processor 263 may be a controller, and is shown as "controller/processor 263" in fig. 31. The transmitter 261 and the receiver 262 are used to support the transceiving of information between the network device and the terminal device in the above embodiments, and to support the radio communication between the terminal device and other terminal devices. The processor 263 performs various functions for communicating with the terminal device.

Further, the network device may also include a memory 264, the memory 264 being used to store program codes and data for the network device. In addition, the network device may also include a communication interface 265. The communication interface 265 is used to support the communication of the network device with other network entities.

The processor 263, e.g., a central processing unit (Central Processing Unit, CPU), may also be one or more integrated circuits configured to implement the above methods, e.g.: one or more specific integrated circuits (Application Specific Integrated Circuit, ASIC), or one or more microprocessors (digital singnal processor, DSP), or one or more field programmable gate arrays (Field Programmable Gate Array, FPGA), or the like. The memory 264 may be one memory or may be a collective term for a plurality of memory elements.

Fig. 38 is a schematic structural diagram of still another network device according to an embodiment of the present application. As shown in fig. 38, the network device includes a transmitter 381, a receiver 382, and a processor 383. The transmitter 381 is configured to send second transmission information to the terminal device, where the second transmission information includes at least one identifier of transmission data, and the transmission data is a code block or a code block group. The receiver 382 is configured to receive transmission data sent by the terminal device at a storage location of the terminal device, where the transmission data is sent by the terminal device through a physical layer of the MAC layer indication terminal device. At this time, the transmitter 381 may implement the function of the fourth transmission module 331 in the network device shown in fig. 32, and further, the transmitter 381 may perform step S401 of the method shown in fig. 21, or the transmitter 381 may perform step S81 of the method shown in fig. 22. The receiver 382 may implement the function of the fourth receiving module 332 in the network device shown in fig. 32, and further, the receiver 382 may perform step S402 of the method shown in fig. 21, or the receiver 382 may perform step S82 of the method shown in fig. 22.

The network device of the embodiment shown in fig. 38 may be used to execute the technical solution of the embodiment of the method described above, or the program of each module of the embodiment shown in fig. 32, and the processor 383 invokes the program to execute the operation of the embodiment of the method described above, so as to implement each module shown in fig. 32.

Wherein the processor 383 may also be a controller, represented in fig. 38 as "controller/processor 383". The transmitter 381 and the receiver 382 are used to support the transmission and reception of information between the network device and the terminal device in the above-described embodiment, and to support the radio communication between the terminal device and other terminal devices. Processor 383 performs various functions for communicating with terminal devices.

Further, the network device may also include a memory 384, the memory 384 for storing program codes and data for the network device. In addition, the network device may also include a communication interface 385. The communication interface 385 is used to support the network device in communicating with other network entities.

Processor 383, such as a central processing unit (Central Processing Unit, CPU), may also be one or more integrated circuits configured to implement the above methods, such as: one or more specific integrated circuits (Application Specific Integrated Circuit, ASIC), or one or more microprocessors (digital singnal processor, DSP), or one or more field programmable gate arrays (Field Programmable Gate Array, FPGA), or the like. The memory 384 may be one memory or may be a collective term for a plurality of memory elements.

Fig. 39 is a schematic structural diagram of still another network device according to an embodiment of the present application. As shown in fig. 39, the network device includes a transmitter 391, a receiver 392, and a processor 393. The transmitter 391 is configured to send second feedback information to the terminal device, where the second feedback information characterizes whether at least one transmission data in the transmission block needs to be retransmitted, and the transmission data is a code block or a code block group. The receiver 392 is configured to receive transmission data sent by the terminal device at a storage location of the terminal device, where the transmission data is sent by the terminal device through a physical layer of the MAC layer indication terminal device. At this time, the transmitter 391 may implement the function of the fifth transmitting module 341 in the network device shown in fig. 33, and further, the transmitter 391 may perform step S501 of the method shown in fig. 25, or the transmitter 391 may perform step S111 of the method shown in fig. 26. At this time, the receiver 392 may implement the function of the fifth receiving module 342 in the network device shown in fig. 33, and further, the receiver 392 may perform step S503 of the method shown in fig. 25, or the receiver 392 may perform step S113 of the method shown in fig. 26.

The network device of the embodiment shown in fig. 39 may be used to execute the technical solution of the embodiment of the method described above, or the program of each module of the embodiment shown in fig. 33, and the processor 383 calls the program to execute the operation of the embodiment of the method described above, so as to implement each module shown in fig. 33.

Processor 393 may also be a controller, represented in FIG. 39 as "controller/processor 383". The transmitter 391 and the receiver 392 are used to support the transceiving of information between the network device and the terminal device in the above embodiments, and to support the radio communication between the terminal device and other terminal devices. Processor 393 performs various functions for communicating with the terminal device.

Further, the network device may also include a memory 394, the memory 394 being used to store program codes and data for the network device. In addition, the network device may also include a communication interface 395. The communication interface 395 is for supporting communication of the network device with other network entities.

Processor 393, such as a central processing unit (Central Processing Unit, CPU), may also be one or more integrated circuits configured to implement the above methods, such as: one or more specific integrated circuits (Application Specific Integrated Circuit, ASIC), or one or more microprocessors (digital singnal processor, DSP), or one or more field programmable gate arrays (Field Programmable Gate Array, FPGA), or the like. The memory 394 may be one memory or may be a collective term for a plurality of memory elements.

It should be noted that, in the embodiment of the present application, the transmitter included in the network device in fig. 37 to 39 may perform a transmitting action corresponding to the foregoing method embodiment, the processor performs processing actions such as processing, determining, obtaining, and the receiver may perform a receiving action. Reference is specifically made to the method embodiments described above.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy Disk, a hard Disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

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

Claims

1. A retransmission processing method, comprising:

the terminal equipment instructs a physical layer of the terminal equipment to generate first feedback information through a Media Access Control (MAC) layer;

wherein the first feedback information characterizes whether at least one transmission data in a transmission block corresponding to the transmission data needs to be retransmitted;

After the terminal device receives the first transmission information sent by the network device, the method further comprises:

2. The method of claim 1, wherein the first transmission information further includes at least one of the following information:

3. The method according to claim 1 or 2, further comprising, after the terminal device receives the first transmission information sent by the network device:

4. The method according to claim 1 or 2, further comprising, after the terminal device receives the first transmission information sent by the network device:

And when the terminal equipment fails to decode, the terminal equipment does not receive third indication information, wherein the third indication information is characterized in that the transmission data with the decoding failure does not carry out data transmission of the transmission data with the decoding failure on resources allocated for the transmission data with the decoding failure, the terminal equipment indicates a physical layer of the terminal equipment through an MAC layer, puts the transmission data with the decoding failure into a buffer memory, and deletes second buffer memory data corresponding to the transmission data with the decoding failure.

5. The method according to claim 1 or 2, further comprising, after the terminal device receives the first transmission information sent by the network device:

6. The method according to claim 1 or 2, further comprising, before the terminal device receives the first transmission information sent by the network device:

the terminal equipment acquires configuration information;

7. A retransmission processing method, comprising:

8. The method of claim 7, wherein the second transmission information further includes at least one of the following information:

9. The method according to claim 7 or 8, further comprising, after the terminal device instructs a physical layer of the terminal device through a MAC layer to send the transmission data on a storage location to the network device:

10. The method according to claim 7 or 8, wherein the second transmission information further includes: a sixth indication of the transmission data;

11. A retransmission processing method, comprising:

12. The method of claim 11, wherein before the terminal device instructs the physical layer of the terminal device through the MAC layer to send the transmission data in the storage location to the network device, further comprising:

13. The method according to claim 11 or 12, further comprising, after the terminal device instructs a physical layer of the terminal device through a MAC layer to send the transmission data on a storage location to the network device:

14. A retransmission processing method, comprising:

the network equipment sends first transmission information to the terminal equipment so that the terminal equipment instructs a physical layer of the terminal equipment to carry out combination processing through a MAC layer after decoding failure of retransmitted transmission data;

15. The method of claim 14, wherein the first transmission information further comprises at least one of the following information:

16. A retransmission processing method, comprising:

17. The method of claim 16, wherein the second transmission information further includes at least one of the following information:

18. The method according to claim 16 or 17, wherein the second transmission information further includes: a sixth indication of the transmission data;

19. A retransmission processing method, comprising:

20. A terminal device, comprising:

The terminal device further includes:

21. The terminal device of claim 20, wherein the first transmission information further includes at least one of the following information:

22. The terminal device according to claim 20 or 21, characterized in that the terminal device further comprises:

23. The terminal device according to claim 20 or 21, characterized in that the terminal device further comprises:

24. The terminal device according to claim 20 or 21, characterized in that the terminal device further comprises:

25. The terminal device according to claim 20 or 21, characterized in that the terminal device further comprises:

26. A terminal device, comprising:

27. The terminal device of claim 26, wherein the second transmission information further includes at least one of the following information:

28. The terminal device according to claim 26 or 27, characterized in that the terminal device further comprises:

29. The terminal device according to claim 26 or 27, wherein the second transmission information further includes: a sixth indication of the transmission data;

30. A terminal device, comprising:

31. The terminal device of claim 30, wherein the terminal device further comprises:

32. The terminal device according to claim 30 or 31, characterized in that the terminal device further comprises:

33. A network device, comprising:

a third sending module, configured to send first transmission information to a terminal device, so that the terminal device instructs, through a MAC layer, a physical layer of the terminal device to perform merging processing after decoding failure for retransmitted transmission data;

34. The network device of claim 33, wherein the first transmission information further comprises at least one of:

35. A network device, comprising:

36. The network device of claim 35, wherein the second transmission information further includes at least one of the following information:

37. The network device according to claim 35 or 36, wherein the second transmission information further includes: a sixth indication of the transmission data;

38. A network device, comprising:

39. A computer readable storage medium comprising instructions which, when run on a computer, cause the computer to perform the method of any of claims 1-6.

40. A computer readable storage medium comprising instructions which, when run on a computer, cause the computer to perform the method of any of claims 7-10.

41. A computer readable storage medium comprising instructions which, when run on a computer, cause the computer to perform the method of any of claims 11-13.

42. A computer readable storage medium comprising instructions which, when run on a computer, cause the computer to perform the method of any of claims 14-15.

43. A computer readable storage medium comprising instructions which, when run on a computer, cause the computer to perform the method of any of claims 16-18.

44. A computer readable storage medium comprising instructions which, when run on a computer, cause the computer to perform the method of claim 19.