CN109803430B

CN109803430B - Wireless communication method and device

Info

Publication number: CN109803430B
Application number: CN201711148389.4A
Authority: CN
Inventors: 冯淑兰; 李�根
Original assignee: Huawei Technologies Co Ltd
Current assignee: SUZHOU XIQUAN SOFTWARE TECHNOLOGY Co.,Ltd.
Priority date: 2017-11-17
Filing date: 2017-11-17
Publication date: 2021-02-23
Anticipated expiration: 2037-11-17
Also published as: CN109803430A; WO2019096098A1

Abstract

A wireless communication method and device are used for a method for determining downlink processing time. One of the wireless communication methods comprises: the network equipment determines a first scheduling configuration of a first physical downlink shared channel, wherein the first physical downlink shared channel is used for carrying retransmission data of a first transmission block, and the first scheduling configuration comprises at least one of a first time domain transmission length of the first physical downlink shared channel, a first subcarrier interval of a signal of the first physical downlink shared channel, and a first reference signal mapping mode of a demodulation reference signal of the first physical downlink shared channel; the network equipment determines first processing time aiming at a first physical downlink shared channel according to the first scheduling configuration; the network equipment determines the transmission time of the terminal equipment for sending the first feedback signal according to the first processing time; the network equipment sends the first scheduling configuration information, the transmission time of the first feedback signal and the first physical downlink shared channel.

Description

Wireless communication method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a wireless communication method and device.

Background

In the next generation wireless communication system, a channel carrying a downlink Transport Block (TB) is referred to as a Physical Downlink Shared Channel (PDSCH). In the communication process, the terminal device has a downlink processing delay, or is referred to as a downlink processing time, where the downlink processing time is a processing time from the end of receiving the PDSCH carrying one TB by the terminal device to the time when the terminal device can send feedback information of data scheduled for the TB, and a unit is an Orthogonal Frequency Division Multiplexing (OFDM) symbol. Specifically, the downlink processing time is defined as a minimum time period from the end time when the terminal device receives one PDSCH from the network device to the time when the terminal device can start sending feedback information for a TB carried on the PDSCH, and the terminal device does not send the feedback information to the network device within the time from the end time when the terminal device receives one PDSCH to the end time plus the uplink and downlink processing time. Here, the feedback information refers to Acknowledgement (ACK)/Negative Acknowledgement (NACK) in a hybrid automatic repeat request (HARQ).

Disclosure of Invention

The embodiment of the application provides a transmission method and equipment, which are used for providing a method for determining downlink processing time.

In a first aspect, a method of wireless communication is provided that may be performed by a network device, such as a base station. The method comprises the following steps: the method comprises the steps that network equipment determines a first scheduling configuration of a first physical downlink shared channel, wherein the first physical downlink shared channel is used for carrying retransmission data of a first transmission block, and the first scheduling configuration comprises at least one of a first time domain transmission length of the first physical downlink shared channel, a first subcarrier interval of a signal of the first physical downlink shared channel, and a first reference signal mapping mode of a demodulation reference signal of the first physical downlink shared channel; the network equipment determines a first processing time aiming at the first physical downlink shared channel according to a first scheduling configuration of the first physical downlink shared channel; the network device determines, according to the first processing time, transmission time for sending a first feedback signal by a terminal device, where the first feedback signal is used to carry a feedback signal for the first physical downlink shared channel; and the network equipment sends the first scheduling configuration information, the transmission time of the first feedback signal and the first physical downlink shared channel.

Accordingly, in a second aspect, a method of wireless communication is provided, the method being executable by a terminal device. The method comprises the following steps: the terminal device determines first scheduling configuration information of a first physical downlink shared channel, where the first physical downlink shared channel is used to carry retransmission data of a first transport block, and the first scheduling configuration information includes at least one of a first time domain transmission length of the first physical downlink shared channel, a first subcarrier interval of a signal of the first physical downlink shared channel, and a first reference signal mapping manner of a demodulation reference signal of the first physical downlink shared channel; the terminal equipment receives the first physical downlink shared channel; and the terminal equipment determines a first processing time according to the first scheduling configuration information, wherein the terminal equipment does not send a feedback signal aiming at the first physical downlink shared channel within the first processing time after receiving the first physical downlink shared channel ending time.

In this embodiment, the network device may determine, according to the first scheduling configuration of the first physical downlink shared channel, a first processing time for the first physical downlink shared channel when receiving and sending the retransmission data, so that the network device may correctly schedule the time for the terminal device to send the feedback information, thereby avoiding scheduling failure and retransmission caused by a scheduling error, for example, the network device schedules the time for the terminal device to send the feedback information too early, and at this time, the terminal device does not complete processing yet, the terminal device may not feed back any information for confirming successful reception, the network device may continue to schedule data retransmission, which may cause a waste of spectrum resources, and if the network device schedules the time for the terminal device to send the feedback information too early, the network device may cause a transmission failure of the entire data block. Therefore, the network device correctly estimates the first processing time, which is helpful for avoiding transmission failure caused by too early scheduling of the terminal device to transmit the feedback information, improving the success rate of the HARQ process, improving the frequency spectrum utilization rate and reducing the transmission delay.

In one possible design, a network device obtains second scheduling configuration information of the first transport block, where the second scheduling configuration information is scheduling configuration information of a second physical downlink shared channel carrying initial transmission data of the first transport block, the second scheduling configuration information includes at least one of a second time domain transmission length of the second physical downlink shared channel, a second subcarrier interval of a signal of the second physical downlink shared channel, and a second reference signal mapping manner of a demodulation reference signal of the second physical downlink shared channel, and the network device determines the first scheduling configuration information according to the second scheduling configuration information.

It is considered that the process of determining the first processing time can be further simplified if the first scheduling configuration is restricted in advance so that the first scheduling configuration is close to the second scheduling configuration. In view of this, in this embodiment of the application, the network device may obtain the second scheduling configuration information of the first transport block, and determine the first scheduling configuration information according to the second scheduling configuration information, so that the first scheduling configuration information is close to or the same as the second scheduling configuration information.

In one possible design, the network device determines the first scheduling configuration information according to the second scheduling configuration information, where the determining includes at least one of: the network equipment determines that the deviation between the first time domain transmission length and the second time domain transmission length is smaller than a first threshold; the network device determining that the first subcarrier spacing is the same as the second subcarrier spacing; the network device determines that the first reference signal mapping mode is the same as the second reference signal mapping mode.

The scheduling configuration indicated by the scheduling configuration information may include at least one of a time domain transmission length, a subcarrier spacing, and a reference signal mapping manner, and then, if at least one of the three satisfies a corresponding condition, the first scheduling configuration indicated by the first scheduling configuration information and the second scheduling configuration indicated by the second scheduling configuration information may be close to each other, and if all of the three satisfy the corresponding condition, the first scheduling configuration and the second scheduling configuration may be the same, so that even if the first processing time is determined directly according to the first scheduling configuration, the determined first processing time may be the same as or may be closer to the processing time determined according to the second scheduling configuration, so that the first feedback signal transmission time determined according to the first processing time may satisfy a processing delay requirement of the terminal device for combined decoding of the retransmitted data and the initially transmitted data, the probability that the terminal equipment cannot send the first feedback signal or directly send NACK (negative acknowledgement) because the terminal equipment cannot complete the processing is reduced, unnecessary scheduling transmission of a base station is reduced, and the spectrum efficiency of the system is improved.

In one possible design, the determining, by the network device, a first processing time for the first physical downlink shared channel according to the first scheduling configuration information of the first physical downlink shared channel includes at least one of: the network equipment acquires a first mapping relation between scheduling configuration information and processing time, and determines the first processing time according to the first scheduling configuration information and the first mapping relation; the network equipment determines a second mapping relation between the subcarrier intervals and the processing time, and the network equipment determines the first processing time according to the first subcarrier intervals and the second mapping relation; the network equipment determines default processing time, and the network equipment determines the first processing time as the default processing time; the network equipment acquires a first mapping relation between scheduling configuration information and processing time, determines third processing time according to the first scheduling configuration information and the first mapping mode, and determines that the first processing time is the sum of the third processing time and a first margin. Correspondingly, the terminal device determines a first processing time according to the first scheduling configuration information, which includes at least one of the following: the terminal equipment acquires a first mapping relation between scheduling configuration information and processing time, and determines first processing time according to the first scheduling configuration information and the first mapping relation; the terminal equipment determines a second mapping relation between the subcarrier intervals and the processing time, and the terminal equipment determines the first processing time according to the first subcarrier intervals and the second mapping relation; the terminal equipment determines default processing time, and the terminal equipment determines that the first processing time is the default processing time; the terminal device obtains a first mapping relation between scheduling configuration information and processing time, the terminal device determines third processing time according to the first scheduling configuration information and the first mapping mode, and the network device determines that the first processing time is the sum of the third processing time and first allowance.

In this embodiment, the network device or the terminal device may determine the first processing time according to the first scheduling configuration information and the predefined rule, and as described above, multiple predefined rules are provided, that is, multiple ways of determining the first processing time according to the first scheduling configuration information and the predefined rule are provided, and in practical applications, the network device may instruct the terminal device to specifically select which way to determine the first processing time, or which specifically selected way may also be specified by a protocol. The terminal device and the network device can adopt the same mode to determine the first processing time, so that the consistency of the determination results of the terminal device and the network device is kept.

In one possible design, the determining, by the network device, a first processing time for the first physical downlink shared channel according to the first scheduling configuration information of the first physical downlink shared channel includes: the network device obtains second scheduling configuration information of the first transport block, where the second scheduling configuration information is scheduling configuration information of a second physical downlink shared channel carrying initial transport data of the first transport block, and the second scheduling configuration information includes at least one of a second time domain transmission length of the second physical downlink shared channel, a second subcarrier interval of a signal of the second physical downlink shared channel, and a second reference signal mapping manner of a demodulation reference signal of the second physical downlink shared channel; and the network equipment determines the first processing time according to the first scheduling configuration information and the second scheduling configuration information. Correspondingly, the determining, by the terminal device, the first processing time according to the first scheduling configuration information includes: the terminal device obtains second scheduling configuration information of the first transport block, where the second scheduling configuration information is scheduling configuration information of a second physical downlink shared channel carrying initial transport data of the first transport block, and the second scheduling configuration information includes at least one of a second time domain transmission length of the second physical downlink shared channel, a second subcarrier interval of a signal of the second physical downlink shared channel, and a second reference signal mapping manner of a demodulation reference signal of the second physical downlink shared channel; and the terminal equipment determines the first processing time according to the first scheduling configuration information and the second scheduling configuration information.

The foregoing describes that the network device or the terminal device may determine the first processing time according to the first scheduling configuration information and the predefined rule, and besides this, the network device or the terminal device may also determine the first processing time in other manners, for example, the network device or the terminal device may also determine the first processing time according to the first scheduling configuration information and the second scheduling configuration information, so that the first processing time is determined by taking into account the condition of the initial transmission data of the first transmission block, and the determined first processing time may meet the processing delay requirement for merging and decoding the initial transmission data and the retransmission data of the first transmission block.

In a third aspect, a method of wireless communication is provided that may be performed by a network device, such as a base station. The method comprises the following steps: the network equipment sends a first physical downlink shared channel, wherein the first physical downlink shared channel is used for bearing retransmission data of a first transmission block; the network device determines, according to first scheduling configuration information of the first physical downlink shared channel, a first processing time for the first physical downlink shared channel, where the first processing time is used to determine a time when a first feedback signal is received, and the first feedback signal is used to carry a feedback signal for the first physical downlink shared channel; the first scheduling configuration information includes at least one of a first time domain transmission length of the first physical downlink shared channel, a first subcarrier interval of a signal of the first physical downlink shared channel, and a first reference signal mapping manner of a demodulation reference signal of the first physical downlink shared channel.

Accordingly, in a fourth aspect, a method of wireless communication is provided, the method being executable by a terminal device. The method comprises the following steps: the terminal device determines first scheduling configuration information of a first physical downlink shared channel, where the first physical downlink shared channel is used to carry retransmission data of a first transport block, and the first scheduling configuration information includes at least one of a first time domain transmission length of the first physical downlink shared channel, a first subcarrier interval of a signal of the first physical downlink shared channel, and a first reference signal mapping manner of a demodulation reference signal of the first physical downlink shared channel; the terminal equipment receives the first physical downlink shared channel; and the terminal equipment determines a first processing time according to the first scheduling configuration information, wherein the terminal equipment does not send a feedback signal aiming at the first physical downlink shared channel within the first processing time after receiving the first physical downlink shared channel ending time.

In the embodiment of the application, the network device can determine the first processing time for the first physical downlink shared channel according to the first scheduling configuration information of the first physical downlink shared channel, so that the first feedback signal transmission time determined according to the first processing time can meet the processing delay requirement of the terminal device for the combined decoding of the retransmitted data and the initially transmitted data, the possibility that the terminal device cannot send the first feedback signal or directly send NACK because the terminal device cannot complete processing is reduced, unnecessary scheduling transmission of a base station is reduced, and the spectrum efficiency of the system is improved.

In one possible design, the network device may obtain second scheduling configuration information of the first transport block, where the second scheduling configuration information is scheduling configuration information of a second physical downlink shared channel carrying initial transmission data of the first transport block, and the second scheduling configuration information includes at least one of a second time domain transmission length of the second physical downlink shared channel, a second subcarrier interval of a signal of the second physical downlink shared channel, and a second reference signal mapping manner of a demodulation reference signal of the second physical downlink shared channel; and the network equipment determines the first scheduling configuration information according to the second scheduling configuration information.

The scheduling configuration indicated by the scheduling configuration information may include at least one of a time domain transmission length, a subcarrier interval, and a reference signal mapping manner, and then, if at least one of the three satisfies a corresponding condition, the first scheduling configuration indicated by the first scheduling configuration information and the second scheduling configuration indicated by the second scheduling configuration information may be close to each other, and if all of the three satisfy the corresponding condition, the first scheduling configuration and the second scheduling configuration may be the same, so that even if the first processing time is determined directly according to the first scheduling configuration, the determined first processing time may be the same as or may be close to the processing time determined according to the second scheduling configuration, so that the first processing time may satisfy a processing delay requirement of the terminal device for combined decoding of retransmitted data and initially transmitted data, and a possibility that the terminal device cannot transmit the first feedback signal or directly transmit NACK because the terminal device cannot complete the processing is reduced And unnecessary scheduling transmission of the base station is reduced, and the frequency spectrum efficiency of the system is improved.

In one possible design, the determining, by the network device, a first processing time for the first physical downlink shared channel according to the first scheduling configuration information of the first physical downlink shared channel includes:

the network device obtains second scheduling configuration information of the first transport block, where the second scheduling configuration information is scheduling configuration information of a second physical downlink shared channel carrying initial transport data of the first transport block, and the second scheduling configuration information includes at least one of a second time domain transmission length of the second physical downlink shared channel, a second subcarrier interval of a signal of the second physical downlink shared channel, and a second reference signal mapping manner of a demodulation reference signal of the second physical downlink shared channel; and the network equipment determines the first processing time according to the first scheduling configuration information and the second scheduling configuration information. Correspondingly, the determining, by the terminal device, the first processing time according to the first scheduling configuration information includes: the terminal device obtains second scheduling configuration information of the first transport block, where the second scheduling configuration information is scheduling configuration information of a second physical downlink shared channel carrying initial transport data of the first transport block, and the second scheduling configuration information includes at least one of a second time domain transmission length of the second physical downlink shared channel, a second subcarrier interval of a signal of the second physical downlink shared channel, and a second reference signal mapping manner of a demodulation reference signal of the second physical downlink shared channel; and the terminal equipment determines the first processing time according to the first scheduling configuration information and the second scheduling configuration information.

The foregoing describes that the network device or the terminal device may determine the first processing time according to the first scheduling configuration information and the predefined rule, and besides this, the network device or the terminal device may determine the first processing time in other manners, for example, the network device or the terminal device may determine the first processing time according to the first scheduling configuration information and the second scheduling configuration information, so as to consider the condition of the first transmission data of the first transmission block when determining the first processing time, thereby enabling the first feedback signal transmission time determined according to the first processing time to meet the processing delay requirement of the terminal device for combined decoding of the retransmission data and the first transmission data, reducing the possibility that the terminal device cannot transmit the first feedback signal or directly transmit NACK because of failure in processing, and reducing unnecessary scheduling transmission by the base station, the spectral efficiency of the system is improved.

In a fifth aspect, a network device is provided. The network equipment has the function of realizing the network equipment designed by the method. These functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In one possible design, the specific structure of the network device may include a transceiver and a processor. The processor and the transceiver may perform the respective functions in the method provided by the first aspect or any one of the possible designs of the first aspect.

In a sixth aspect, a terminal device is provided. The terminal equipment has the function of realizing the terminal equipment designed by the method. These functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In one possible design, the specific structure of the terminal device may include a processor and a transceiver. The processor and the transceiver may perform the respective functions in the method provided by the second aspect or any one of the possible designs of the second aspect.

In a seventh aspect, a network device is provided. The network equipment has the function of realizing the network equipment designed by the method. These functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In one possible design, the specific structure of the network device may include a transceiver and a processor. The processor and the transceiver may perform the respective functions in the method provided by the third aspect or any one of the possible designs of the third aspect.

In an eighth aspect, a terminal device is provided. The terminal equipment has the function of realizing the terminal equipment designed by the method. These functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In one possible design, the specific structure of the terminal device may include a processor and a transceiver. The processor and the transceiver may perform the respective functions in the method provided by the fourth aspect or any one of the possible designs of the fourth aspect.

In a ninth aspect, a network device is provided. The network equipment has the function of realizing the network equipment designed by the method. These functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In one possible design, the specific structure of the network device may include a transceiver module and a processing module. The processing module and the transceiver module may perform the respective functions in the method provided by the first aspect or any one of the possible designs of the first aspect.

In a tenth aspect, a terminal device is provided. The terminal equipment has the function of realizing the terminal equipment designed by the method. These functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In one possible design, the specific structure of the terminal device may include a processing module and a transceiver module. The processing module and the transceiver module may perform the respective functions in the method provided by the second aspect or any one of the possible designs of the second aspect.

In an eleventh aspect, a network device is provided. The network equipment has the function of realizing the network equipment designed by the method. These functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In one possible design, the specific structure of the network device may include a transceiver module and a processing module. The processing module and the transceiver module may perform the respective functions in the method provided by the third aspect or any one of the possible designs of the third aspect.

In a twelfth aspect, a terminal device is provided. The terminal equipment has the function of realizing the terminal equipment designed by the method. These functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In one possible design, the specific structure of the terminal device may include a processing module and a transceiver module. The processing module and the transceiver module may perform the respective functions in the method provided by the fourth aspect or any one of the possible designs of the fourth aspect.

In a thirteenth aspect, a communication device is provided. The communication device may be a network device designed by the method or a chip arranged in the network device. The communication device includes: a memory for storing computer executable program code; and a processor coupled with the memory. Wherein the program code stored in the memory comprises instructions which, when executed by the processor, cause the communication apparatus to perform the method performed by the network device of the first aspect described above or any one of the possible designs of the first aspect.

In a fourteenth aspect, a communications apparatus is provided. The communication device may be the terminal device designed in the above method, or a chip provided in the terminal device. The communication device includes: a memory for storing computer executable program code; and a processor coupled with the memory. Wherein the program code stored in the memory comprises instructions which, when executed by the processor, cause the communication apparatus to perform the method performed by the terminal device of the second aspect described above or any one of the possible designs of the second aspect.

In a fifteenth aspect, a communications apparatus is provided. The communication device may be a network device designed by the method or a chip arranged in the network device. The communication device includes: a memory for storing computer executable program code; and a processor coupled with the memory. Wherein the program code stored in the memory comprises instructions which, when executed by the processor, cause the communication apparatus to perform the method performed by the network device of the third aspect or any one of the possible designs of the third aspect.

In a sixteenth aspect, a communication device is provided. The communication device may be the terminal device designed in the above method, or a chip provided in the terminal device. The communication device includes: a memory for storing computer executable program code; and a processor coupled with the memory. Wherein the program code stored in the memory comprises instructions which, when executed by the processor, cause the communication apparatus to perform the method performed by the terminal device of the fourth aspect described above or any one of the possible designs of the fourth aspect.

In a seventeenth aspect, a communication system is provided that includes a terminal device and a network device. The network device is configured to determine a first scheduling configuration of a first physical downlink shared channel, where the first physical downlink shared channel is used to carry retransmission data of a first transport block, the first scheduling configuration includes at least one of a first time domain transmission length of the first physical downlink shared channel, a first subcarrier interval of a signal of the first physical downlink shared channel, and a first reference signal mapping manner of a demodulation reference signal of the first physical downlink shared channel, determine a first processing time for the first physical downlink shared channel according to the first scheduling configuration of the first physical downlink shared channel, determine a transmission time for a terminal device to transmit a first feedback signal according to the first processing time, where the first feedback signal is used to carry a feedback signal for the first physical downlink shared channel, sending the first scheduling configuration information, the transmission time of the first feedback signal, and the first physical downlink shared channel; the terminal device is configured to determine first scheduling configuration information of a first physical downlink shared channel, where the first physical downlink shared channel is used to carry retransmission data of a first transport block, the first scheduling configuration information includes at least one of a first time domain transmission length of the first physical downlink shared channel, a first subcarrier interval of a signal of the first physical downlink shared channel, and a first reference signal mapping manner of a demodulation reference signal of the first physical downlink shared channel, receive the first physical downlink shared channel, and determine a first processing time according to the first scheduling configuration information, where the terminal device does not send a feedback signal for the first physical downlink shared channel in the first processing time after receiving an end time of the first physical downlink shared channel.

In an eighteenth aspect, a communication system is provided that includes a terminal device and a network device. The network device is configured to send a first physical downlink shared channel, where the first physical downlink shared channel is used to carry retransmission data of a first transport block, and determine a first processing time for the first physical downlink shared channel according to first scheduling configuration information of the first physical downlink shared channel, where the first processing time is used to determine a time for receiving a first feedback signal, the first feedback signal is used to carry a feedback signal for the first physical downlink shared channel, and the first scheduling configuration information includes at least one of a first time domain transmission length of the first physical downlink shared channel, a first subcarrier interval of a signal of the first physical downlink shared channel, and a first reference signal mapping manner of a demodulation reference signal of the first physical downlink shared channel; the terminal device is configured to determine first scheduling configuration information of a first physical downlink shared channel, where the first physical downlink shared channel is used to carry retransmission data of a first transport block, the first scheduling configuration information includes at least one of a first time domain transmission length of the first physical downlink shared channel, a first subcarrier interval of a signal of the first physical downlink shared channel, and a first reference signal mapping manner of a demodulation reference signal of the first physical downlink shared channel, receive the first physical downlink shared channel, and determine a first processing time according to the first scheduling configuration information, where the terminal device does not send a feedback signal for the first physical downlink shared channel in the first processing time after receiving an end time of the first physical downlink shared channel.

A nineteenth aspect provides a computer storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the method of the first aspect described above or any one of the possible designs of the first aspect.

A twentieth aspect provides a computer storage medium having stored therein instructions which, when run on a computer, cause the computer to perform the method as set forth in the second aspect or any one of the possible designs of the second aspect.

A twenty-first aspect provides a computer storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the method as set forth in the third aspect or any one of the possible designs of the third aspect.

In a twenty-second aspect, there is provided a computer storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the method of the fourth aspect described above or any one of the possible designs of the fourth aspect.

A twenty-third aspect provides a computer program product comprising instructions stored thereon, which when run on a computer, cause the computer to perform the method of the first aspect or any one of the possible designs of the first aspect.

A twenty-fourth aspect provides a computer program product comprising instructions stored thereon, which when run on a computer, cause the computer to perform the method as set forth in the second aspect or any one of the possible designs of the second aspect.

A twenty-fifth aspect provides a computer program product comprising instructions stored thereon, which when run on a computer, cause the computer to perform the method of the third aspect or any one of the possible designs of the third aspect.

A twenty-sixth aspect provides a computer program product comprising instructions stored thereon, which when run on a computer, cause the computer to perform the method of the fourth aspect or any one of the possible designs of the fourth aspect.

In the embodiment of the application, the network device can correctly schedule the time for the terminal device to send the feedback information, and avoid scheduling failure and retransmission caused by scheduling errors, for example, the network device schedules the time for the terminal device to send the feedback information too early, and at this time, the terminal device does not finish processing yet, and the terminal device does not feed back any information for confirming successful reception, and the network device continues to schedule data retransmission, which causes waste of spectrum resources, and if the network device schedules the time for the terminal device to send the feedback information too early, transmission failure of the whole data block is caused. Therefore, the network device correctly estimates the first processing time, which is helpful for avoiding transmission failure caused by too early scheduling of the terminal device to transmit the feedback information, improving the success rate of the HARQ process, improving the frequency spectrum utilization rate and reducing the transmission delay.

Drawings

Fig. 1 is a schematic diagram of a HARQ process;

fig. 2 is a schematic diagram of a network device scheduling a time at which a terminal device transmits feedback information according to a first processing time;

fig. 3A is a schematic diagram of transmitting initial transmission data and retransmission data in an embodiment of the present application;

fig. 3B is a schematic view of an application scenario according to an embodiment of the present application;

fig. 4 is a flowchart of a wireless communication method according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 7A-7B are schematic structural diagrams of a communication device according to an embodiment of the present disclosure.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

Hereinafter, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

1) Terminal equipment, including devices that provide voice and/or data connectivity to a user, may include, for example, handheld devices with wireless connection capability or processing devices connected to wireless modems. The terminal device may communicate with a core network via a Radio Access Network (RAN), exchanging voice and/or data with the RAN. The terminal device may include a User Equipment (UE), a wireless terminal device, a mobile terminal device, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an Access Point (AP), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), a user equipment (user device), or the like. For example, mobile phones (or so-called "cellular" phones), computers with mobile terminal equipment, portable, pocket, hand-held, computer-included or vehicle-mounted mobile devices, smart wearable devices, and the like may be included. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), smartwatches, smarthelmets, smartglasses, smartbands, and the like. Also included are constrained devices, such as devices that consume less power, or devices that have limited storage capabilities, or devices that have limited computing capabilities, etc. Examples of information sensing devices include bar codes, Radio Frequency Identification (RFID), sensors, Global Positioning Systems (GPS), laser scanners, and the like.

2) A network device, e.g., including a base station (e.g., access point), may refer to a device in an access network that communicates over the air-interface, through one or more cells, with wireless terminal devices. The base station may be configured to interconvert received air frames and Internet Protocol (IP) packets as a router between the terminal device and the rest of the access network, which may include an IP network. The base station may also coordinate management of attributes for the air interface. For example, the base station may include an evolved Node B (NodeB or eNB or e-NodeB) in an LTE system or an evolved LTE system (LTE-Advanced, LTE-a), or may also include a next generation Node B (gNB) in a fifth generation mobile communication technology (5G) New Radio (NR) system, which is not limited in the embodiments of the present application.

3) HARQ is a technology formed by combining forward error correction coding (FEC) and automatic repeat request (ARQ).

A Media Access Control (MAC) layer packet at a transmitting end is called TB, and one TB is coded and modulated by FEC at a physical layer and then transmitted to an antenna port. After reaching the receiving end, the demodulation and decoding are carried out through the physical layer of the receiving end, and the decoding result is fed back to the sending end. If the receiving end can correctly receive the data packet, the receiving end sends ACK to the sending end; if the receiving end cannot correctly receive the data packet, the receiving end sends NACK to the sending end. After receiving the ACK/NACK fed back by the receiving end, the transmitting end starts transmitting the next TB or ends the transmission if it is determined to be ACK, and retransmits the data packet if it is determined to be NACK, as shown in fig. 2.

HARQ may adopt various implementation manners, one of which is called Incremental Redundancy (IR) HARQ, that is, a first transmission transmits information bits and a part of redundant bits, and if the first transmission is not successfully decoded, the coding rate of a channel may be reduced by retransmitting more redundant bits, thereby achieving a higher decoding success rate. If the redundant bits added with retransmission still cannot be decoded correctly, retransmission is carried out again, the redundant bits are accumulated continuously along with the increase of the retransmission times, and the channel coding rate is reduced continuously, so that a better decoding effect can be obtained.

4) The terms "system" and "network" in the embodiments of the present application may be used interchangeably. The "plurality" means two or more, and in view of this, the "plurality" may also be understood as "at least two" in the embodiments of the present application. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" generally indicates that the preceding and following related objects are in an "or" relationship, unless otherwise specified.

And, unless stated to the contrary, the embodiments of the present application refer to the ordinal numbers "first", "second", etc., for distinguishing a plurality of objects, and do not limit the sequence, timing, priority, or importance of the plurality of objects.

The embodiment of the application can be applied to a Long Term Evolution (LTE) system, a New Radio (NR) system of a fifth generation mobile communication technology (5G), and a next generation mobile communication system or other similar communication systems.

In order to better understand the technical solutions provided by the embodiments of the present application, the technical background of the embodiments of the present application is described below.

A conventional cellular radio communication system comprises a network device and a terminal device, and transmission from the terminal device to the network device is called uplink transmission, and transmission from the network device to the terminal device is called downlink transmission. The terminal device sends which uplink signals on which uplink time-frequency resources, and receives downlink signals on which downlink time-frequency resources, which are usually specified by the network device. Specifically, the network device sends an uplink scheduling signaling, where the uplink scheduling signaling informs the terminal device of which time-frequency resources to send uplink data, and after receiving the uplink scheduling signaling, the terminal device generates an uplink data packet according to an indication of the uplink scheduling signaling and sends the uplink data in the scheduled time-frequency resources. For downlink, the network device sends a downlink scheduling signaling, the downlink scheduling signaling informs the terminal device of which time-frequency resources to receive downlink data, and after receiving the downlink scheduling signaling, the terminal device receives the downlink data in the scheduled time-frequency resources according to the indication of the downlink scheduling signaling. Meanwhile, in a wireless communication system, in order to improve communication reliability, a HARQ hybrid automatic feedback retransmission technology is generally adopted to implement retransmission of data.

Fig. 1 is a diagram illustrating HARQ. A Media Access Control (MAC) layer packet at a transmitting end is called a TB, and a TB at a MAC layer is sent to an antenna port for transmission after FEC coding and modulation at a physical layer. After the data packet arrives at the receiving end, the data packet is demodulated and decoded through a physical layer of the receiving end, the decoding result is fed back to the sending end by the receiving end, and if the data packet can be correctly received by the receiving end, the receiving end sends ACK (acknowledgement character) to the sending end; if the receiving end cannot correctly receive the data packet, the receiving end sends NACK to the sending end. And after the sending end receives the ACK/NACK fed back by the receiving end, if the ACK/NACK is NACK, the data packet is sent again, and if the NACK is ACK, the next data packet is transmitted or the data transmission process is ended.

HARQ can adopt various implementation manners, one of which is called incremental redundancy HARQ, and as can be known from the foregoing description, better decoding effect can be obtained by adopting incremental redundancy HARQ.

In the next generation wireless communication system, a channel carrying a downlink TB is referred to as a PDSCH, and a channel carrying uplink feedback information ACK/NACK is referred to as a Physical Uplink Control Channel (PUCCH). In the communication process, a certain processing time is required for the terminal device to receive a downlink signal, which is called downlink processing delay or downlink processing time, where the downlink processing time is the time from the end of receiving a PDSCH carrying one TB by the terminal device to the earliest time when the terminal device can send feedback information of data scheduled for the TB, and a unit is an Orthogonal Frequency Division Multiplexing (OFDM) symbol. Specifically, the downlink processing time is defined as the minimum time period from the end time when the terminal device receives one PDSCH to the time when the terminal device can start transmitting the feedback information for the TB carried on the PDSCH, and may be represented by N1. For the network device, the network device may consider that the feedback information from the terminal device is not received within a time of adding Timing Advance (TA) to N1 symbols after the start of transmitting one PDSCH end time. The feedback information here refers to ACK/NACK in HARQ. TA is typically twice the transmission delay. An exemplary illustration of the downstream processing time is given as shown in fig. 2.

In a cellular wireless communication system, on which time-frequency resource a terminal device receives a PDSCH in which manner, and on which time-frequency resource the terminal device transmits a feedback signal ACK/NACK for a TB carried on the PDSCH in which manner are all scheduled by a network device, if the network device does not know downlink processing time of the terminal device, the network device has no way to correctly schedule the time for the terminal device to transmit the ACK/NACK. In the prior art, several typical mapping relationship tables of PDSCH scheduling configuration and value of downlink processing time are determined, and the mapping relationship may be predetermined by the network device and the terminal device, or reported to the network device as capability information of the terminal device. The mapping table is shown in Table 1 below, where μ_DLFor indicating different subcarrier spacings, mu_DLThe values are 0,1,2 and 3, which respectively correspond to different subcarrier intervals

Table 1 downlink processing delay capability table

After determining the scheduling configuration of the PDSCH, the network device obtains the downlink processing time of the terminal device according to the mapping relation table, and configures the transmission time for the terminal device to send the feedback information ACK/NACK for the TB carried by the PDSCH according to the downlink processing time. For example, if the subcarrier spacing (SCS) of one PDSCH is 15KHz, that is, μ_DLScheduling PDSCH time-domain transmission (0)The length is 14 symbols, and extra PDSCH DM-RS is scheduled, the base station and the terminal device consider N1 ═ 13 symbols; as another example, if SCS is 15KHz, that is, μ_DLWhen the length of the scheduled PDSCH is 4 symbols, the base station and the terminal device consider N1 to be 6 symbols.

However, the mapping relationship between the PDSCH scheduling configuration and the value of the downlink processing time determined in the prior art is determined according to three conditions, namely, the time domain transmission length of the scheduled PDSCH, the subcarrier interval of the scheduled PDSCH, and the reference signal mapping mode on the scheduled PDSCH, and does not consider whether the scheduled PDSCH carries initial transmission data or retransmission data. For initial transmission data, according to the mapping relationship between the scheduling configuration of the currently scheduled PDSCH and the downlink processing time, the obtained downlink processing time is relatively accurate, and the network device may schedule that ACK/NACK transmission of the terminal device is not transmitted within the downlink processing time after the end time of receiving the downlink PDSCH, thereby giving the terminal device sufficient processing time so that the terminal device can complete reception of data carried on the scheduled PDSCH before the scheduled ACK/NACK transmission time, and send feedback information for a TB carried on the PDSCH at the scheduled ACK/NACK. As in the above example, if the scheduling of a TB at initial transmission is configured as: SCS 15KHz, i.e., mu_DLReferring to fig. 3A, for example, initial transmission data of the TB is carried through a D1 slot in fig. 3A, the network device determines that the processing time for the PDSCH is N1 — 13 OFDM symbols, configures the time for the terminal device to send feedback information according to N1 — 13 OFDM symbols, and if the PDSCH is not successfully transmitted before 13 symbols after the terminal device receives the PDSCH, the network device needs to schedule retransmission, and if the scheduling configuration for the PDSCH during retransmission is SCS 15KHz, that is, μ DM-RS is scheduled_DLThe PDSCH is scheduled to have a length of 4 OFDM symbols, please continue to refer to fig. 3A, for example, the retransmission data of the TB is carried through the D2 slot in fig. 3A. Then, according to the mapping relationship in table 1, the network device considers that the processing time of the terminal device is N1 ═ 6 OFDM symbols, according to the mapping relationship in table 1This N1 determines the transmission time of the feedback signal.

For example, assuming that the end time of the PDSCH is a Y symbol, the scheduling feedback signal transmission time is a (Y + N1+1) symbol. However, after the terminal device receives the data carried on the 4 OFDM symbols, it is actually to combine and decode the data carried on the 14 OFDM symbols before, and the processing time for decoding the data of the 14 symbols is longer than that for decoding the data of the 4 symbols. Therefore, N1 calculated according to the 4-symbol scheduling configuration is too small for the terminal device to complete the processing within the corresponding N1 OFDM symbols, which results in that the terminal device cannot transmit the feedback signal or the terminal device can only transmit the NACK signal, and the base station reschedules a retransmission again. And so on, resulting in unnecessary scheduling of transmissions by the base station and reducing the spectral efficiency of the system.

In view of this, the technical solution of the embodiment of the present application is provided, so that when the network device schedules retransmission data, sufficient processing time can be reserved for the terminal device, so that the terminal device can complete downlink processing before the scheduled transmission time of the feedback information, thereby avoiding scheduling failure due to incorrect setting of the transmission time of the feedback information.

With the above technical background of the embodiment of the present application introduced, please refer to fig. 3B, which is a schematic diagram of an application scenario of the embodiment of the present application.

Fig. 3B includes a network device and a terminal device, where the network device may send a PDSCH to the terminal device, and after receiving the PDSCH, the terminal device may send an ACK/NACK for the received PDSCH to the network device. The network device in fig. 3B is, for example, AN Access Network (AN) device, such as a base station. In this embodiment, since the scheme of the present application mainly relates to an access network device and a terminal device, a core network device is not shown in fig. 3B. The access network device is, for example, an evolved Node B (NodeB or eNB or e-NodeB) in the LTE system or the LTE-a system, or may also include a gNB in the 5G NR system.

The technical scheme provided by the embodiment of the application is described below with reference to the accompanying drawings.

Referring to fig. 4, an embodiment of the present application provides a wireless communication method, which is applied to the application scenario shown in fig. 3B in the following description. The flow of the method is described below.

S41, the network device determines a first scheduling configuration of the first physical downlink shared channel. The first scheduling configuration includes at least one of a first time domain transmission length of the first physical downlink shared channel, a first subcarrier interval of a signal of the first physical downlink shared channel, and a first reference signal mapping manner of a demodulation reference signal of the first physical downlink shared channel;

s42, the network device determines, according to the first scheduling configuration of the first physical downlink shared channel, a first processing time for the first physical downlink shared channel;

s43, the network device determines, according to the first processing time, transmission time for sending a first feedback signal by a terminal device, where the first feedback signal is used to carry a feedback signal for the first physical downlink shared channel;

s44, if the network device sends the first scheduling configuration, the transmission time of the first feedback signal, and the first physical downlink shared channel, the terminal device receives the first scheduling configuration information, the transmission time of the first feedback signal, and the first physical downlink shared channel from the network device, where the first physical downlink shared channel is used to carry retransmission data of a first transport block, the first feedback signal is used to carry a feedback signal for the first physical downlink shared channel, and information used to indicate scheduling configuration is called scheduling configuration information, and the first scheduling configuration information and the first physical downlink shared channel are not clearly distinguished;

s45, the terminal device determines a first processing time according to the first scheduling configuration information, where the terminal device does not send a feedback signal for the first physical downlink shared channel within the first processing time after receiving the first physical downlink shared channel end time, that is, a time when the terminal device sends the feedback signal for the first physical downlink shared channel is not earlier than the first processing time end time after the terminal device receives the first physical downlink shared channel end time. The feedback signal may be carried on a physical uplink control channel PUCCH or may be carried on a physical uplink shared channel PUSCH.

In the embodiment of the present application, the physical downlink shared channel is, for example, a PDSCH, a physical uplink control channel PUCCH, or a physical uplink shared channel PUSCH, but is not limited thereto.

The network device first determines to use a first physical downlink shared channel to carry retransmission data of a first transport block, where the first transport block corresponds to initial transmission data and retransmission data, and the physical downlink shared channel used to carry the retransmission data of the first transport block is referred to herein as the first physical downlink shared channel. If it is determined that the first physical downlink shared channel is used to carry data, the network device needs to determine a scheduling configuration of the first physical downlink shared channel, which is referred to herein as a first scheduling configuration. The first scheduling configuration may include at least one of a time domain transmission length of the first physical downlink shared channel, a subcarrier interval of a signal of the first physical downlink shared channel, and a mapping manner of a demodulation reference signal of the first physical downlink shared channel, and of course, the first scheduling configuration information may also include other information related to scheduling, which is not limited in this embodiment.

Herein, the time domain transmission length of the first physical downlink shared channel is referred to as a first time domain transmission length, the subcarrier spacing of the signal of the first physical downlink shared channel is referred to as a first subcarrier spacing, and the mapping manner of the demodulation reference signal of the first physical downlink shared channel is referred to as a first reference signal mapping manner. The demodulation reference signal may be, for example, a demodulation reference signal (DM-RS) or another demodulation reference signal. The time domain transmission length may be counted in units of OFDM symbols or in slot lengths. The subcarrier spacing may be 15kHZ, 30kHZ, 60kHZ, 120kHZ, 240kHZ, etc. The mapping manner of the demodulation reference signal may be only the pre-demodulation reference signal, or both the pre-demodulation reference signal and other demodulation reference signals, or multiple types, and the implementation of the present application is not limited.

After determining the first scheduling configuration information, the network device may determine, according to the first scheduling configuration information, a processing time for the first physical downlink shared channel, where the processing time for the first physical downlink shared channel is referred to as a first processing time, the first processing time is used to determine a time for the terminal device to transmit a first feedback signal, and the first feedback signal is used to carry a feedback signal for the first physical downlink shared channel, that is, whether the terminal device can successfully decode the acknowledgement signal of the first transport block after receiving the first physical downlink shared channel. It can be understood that the first feedback signal is a feedback signal of the first physical downlink shared channel sent by the terminal device, for example, ACK/NACK, according to the first processing time, the network device may correctly configure the transmission time of the first feedback signal, where the transmission time of the first feedback signal is after the terminal device finishes receiving the PDSCH, and after the first processing time, it is avoided that scheduling failure is caused because the terminal device has not completed downlink processing when the configured transmission time of the first feedback signal arrives due to the incorrectly configured transmission time of the first feedback signal. Correspondingly, the terminal device may also determine the processing time for the first physical downlink shared channel according to the first scheduling configuration information, that is, determine the first processing time, and the manner of determining the first processing time according to the first scheduling configuration information, which is adopted by the network device and the terminal device, may be the same, thereby ensuring consistency of results determined by the network device and the terminal device. The first feedback signal is used to carry a feedback signal for a first physical downlink shared channel, that is, whether the terminal device can successfully decode the acknowledgement signal of the first transport block after receiving the first physical downlink shared channel may be understood as that the feedback signal is ACK/NACK, and the first feedback signal is a signal for carrying ACK/NACK. The first feedback signal is collectively described hereinafter.

The first processing time is a downlink processing time of the terminal device, then a starting time of the first processing time is an ending time of the terminal device receiving the first physical downlink shared channel, and an ending time of the first processing time may be an earliest time at which the terminal device can start sending the first feedback signal, that is, a shortest time length from the ending time of the terminal device receiving the first physical downlink shared channel to the time at which the terminal device can start sending the first feedback signal for the first physical downlink shared channel. Therefore, the time when the terminal device can send the first feedback signal can be determined according to the first processing time, the network device can configure the transmission time when the terminal device sends the first feedback signal according to the first processing time, and the network device can determine the time when the network device receives the first feedback signal by considering the time delay between the terminal device and the network device. The network device may send information of the determined time when the terminal device sends the first feedback signal to the terminal device, where the time when the first feedback signal is sent may also be referred to as a transmission time when the first feedback signal is sent, and the time here may be a time instant, which is actually when the terminal device sends the first feedback signal when the transmission time when the first feedback signal is sent arrives. The terminal device may determine when the first feedback signal can be transmitted upon receiving information from the network device of a transmission time at which the terminal device transmits the first feedback signal. The starting time of the transmission time for the terminal device to send the first feedback signal should be after the first processing time is finished, which can be understood as that the terminal device can only send the first feedback signal after the first processing time after the terminal device receives the first physical downlink shared channel is finished, in other words, the terminal device does not send the feedback signal (i.e. the first feedback signal) for the first physical downlink shared channel in the first processing time after the terminal device receives the first physical downlink shared channel is finished. For the network device, after the TA is added to the first processing time after the network device sends the first physical downlink shared channel end time, the first feedback signal sent by the terminal device is not received. The TA is used to characterize the transmission delay of the wireless signal between the network device and the terminal device, and generally, the TA is twice of the transmission time. The specific value of TA may also be sent to the terminal device by the network device.

It is described herein that the terminal device is "able" to start transmitting the feedback signal for the first transport block carried on the PDSCH means that the terminal device does not necessarily transmit the feedback signal, e.g., the terminal device does not necessarily transmit the first feedback signal. Specifically, the network device may send information of a transmission time when the terminal device sends the first feedback signal to the terminal device, and after receiving the information of the transmission time when the terminal device sends the first feedback signal from the network device, the terminal device may determine whether a start time of the transmission time when the first feedback signal is sent is after the first processing time is ended, where the start time is after the first processing time is ended, and the start time is coincident with an end time of the first processing time and is also after the end time of the first processing time. If the terminal device determines that the starting time of the transmission time for sending the first feedback signal is located after the first processing time is finished, it determines that the transmission time of the first feedback signal determined by the network device is correct, and then the terminal device can send the first feedback signal to the network device through a physical uplink control channel or a physical uplink shared data channel when the transmission time for sending the first feedback signal indicated by the network device arrives, and the network device can receive the first feedback signal through the physical uplink control channel or the physical uplink shared data channel at the determined time for receiving the first feedback signal; if the terminal device determines that the transmission time for sending the first feedback signal is not located after the first processing time is ended, for example, the start time of the transmission time for sending the first feedback signal is located before the first processing time is ended, the terminal device may determine that the transmission time for sending the first feedback signal determined by the network device is incorrect, and the terminal device may not send the first feedback signal to the network device at the transmission time for sending the first feedback signal indicated by the network device, and at this time, the network device may not know that the terminal device does not transmit the first feedback signal, so that the network device may still monitor the physical uplink control channel when the determined time for receiving the first feedback signal arrives, but the network device may not receive the first feedback signal on the physical uplink control channel.

Therefore, according to the technical scheme provided by the embodiment of the application, the network device can determine the first processing time according to the first scheduling configuration information, so that the time for the terminal device to send the ACK/NACK can be correctly configured according to the first processing time, and the situation that the terminal device cannot feed back the ACK/NACK because the time for the terminal device to send the ACK/NACK is configured too early is avoided, and further, the resource waste caused by the retransmission of the signal by the network device is further caused.

As can be seen from the foregoing description, with respect to determining the downlink processing time of the terminal device, if it is not distinguished whether the downlink data received through the physical downlink shared channel is the initial transmission data or the retransmission data, the determined N1 may be too small, so that the first feedback signal transmission time determined according to N1 cannot meet the processing delay requirement of the terminal device for the combined decoding of the retransmission data and the initial transmission data, so that the terminal device cannot transmit the feedback signal, or the terminal device can only transmit the NACK signal, and the base station may reschedule a retransmission again. And so on, resulting in unnecessary scheduling of transmissions by the base station and reducing the spectral efficiency of the system.

In order to solve the problem of this solution, in the embodiment of the present application, the terminal device and/or the network device determine the first processing time according to the first scheduling configuration, and other manners may be adopted, which are described below separately. In the following description, taking the network device to determine the first processing time according to the first scheduling configuration as an example, the foregoing describes that, because the terminal device and the network device may determine the downlink processing time of the terminal device in the same manner, this is an example:

in the method a, if the first pdcch carries retransmission data of the first transport block, the network device determines a first processing time according to the first scheduling configuration information and a predefined rule.

The predefined rule may be various, and how the network device determines the first processing time according to the first scheduling configuration information and the predefined rule under different predefined rules is described below, which may be understood as that the mode a includes various different implementation modes.

In implementation a1, the network device obtains the first mapping relationship between the scheduling configuration information and the processing time, and the network device determines the first processing time according to the first scheduling configuration information and the first mapping relationship.

Here, the mapping relationship between the scheduling configuration information and the processing time is referred to as a first mapping relationship. In the description process, if there is no special description, the processing time refers to the downlink processing time of the terminal device.

The mapping relationship between the scheduling configuration information and the processing time may be various.

As an example, one mapping relationship may refer to table 2:

TABLE 2

Wherein, mu_DLIs a parameter related to the subcarrier spacing of the signal (i.e. data) carried on the PDSCH, e.g. the subcarrier spacing of the signal carried on the PDSCH is 15KHz, mu_DLIs 0 or the subcarrier spacing of the signal carried on the PDSCH is 30KHz, then mu_DLIs 1, and so on, when the subcarrier interval of the signal carried on the PDSCH increases by one grade, mu_DLIs increased by 1, so that mu can be determined according to the subcarrier spacing of signals carried on the PDSCH_DLThe value of (a).

As an example, another mapping relationship may refer to table 3:

TABLE 3

The difference between table 2 and table 3 is that the capabilities of the applicable terminal devices are different, table 2 is applicable to the terminal device having capability (capability)1, and table 3 is applicable to the terminal device having capability 2. For example, the terminal device may previously send information indicating the capability of the terminal device to the network device, and the network device may determine the capability of the terminal device after receiving the information indicating the capability of the terminal device from the terminal device, so that the network device may indicate which table of tables 2 and 3 is specifically used by the terminal device. Or the terminal device may send information indicating the capability of the terminal device to the network device in advance, and the network device may determine the capability of the terminal device after receiving the information indicating the capability of the terminal device from the terminal device, so that the network device and the terminal device may determine which table of tables 2 and 3 is specifically used according to the specification of the protocol, and the network device does not need to indicate which table is used by the terminal device, thereby reducing interaction between devices.

Table 2 and table 3 presuppose that the time scheduling unit of the network device is 1 slot (slot), for example, 7 OFDM symbols, and in addition, another mapping relationship is provided herein for the case that the time scheduling unit is not 1 slot in length. As an example, the mapping relationship may refer to table 4, and the mapping relationship may include at least one item in table 4, so that when the time scheduling unit is not the length of 1 time slot, the first processing time can be determined according to the mapping relationship provided in the embodiment of the present application. For example, table 4 shows downlink processing times when the time scheduling unit is 2 OFDM symbols, 4 OFDM symbols, and 7 OFDM symbols, respectively.

TABLE 4

Table 4 may not distinguish the capabilities of the terminal device, that is, the terminal device with any capability may be applied to table 4, or table 4 may also distinguish the capabilities of the terminal device, for example, the terminal device with capability 1 is applied to table 4, or the terminal device with capability 2 is applied to table 4, which is not limited in this embodiment of the present application.

In an embodiment of the present application, the first mapping relationship may include at least one of table 2, table 3, and table 4. Of course, tables 2,3 and 4 are only examples, and the embodiment of the present application does not limit other first mapping relationships, and any mapping relationship between the scheduling configuration and the processing time is within the scope of the embodiment of the present application. In addition, in the above description, tables 2,3 and 4 are divided into three tables, and in practical applications, at least two tables of tables 2,3 and 4 may be combined into one table, for example, tables 2 and 3 may be combined into one table, or tables 3 and 4 may be combined into one table, or tables 2,3 and 4 may be combined into one table.

The first scheduling configuration includes at least one of a first time domain transmission length of the first physical downlink shared channel, a first subcarrier spacing of a signal of the first physical downlink shared channel, and a first reference signal mapping manner of a demodulation reference signal of the first physical downlink shared channel, and the first mapping relationship as described above, for example, table 2, table 3, or table 4, includes the time domain length of the physical downlink shared channel, the reference signal mapping manner of the demodulation reference signal of the physical downlink control channel (i.e., no additional PDSCH DM-RS configuration or additional PDSCH DM-RS configuration), and the subcarrier spacing (μ) of the signal of the physical downlink shared channel (i.e., no additional PDSCH-RS configuration or additional PDSCH-RS configuration)_DLIs a parameter related to subcarrier spacing), after determining the first configuration information, by querying the first mapping relationship, a processing time corresponding to the first configuration information in the first mapping relationship can be determined, and the network device can determine that the processing time is the first processing time.

For example, the subcarrier spacing of the signal carried by the first physical downlink shared channel indicated by the first configuration information is 15KHz, that is, μ_DLAnd the first configuration information indicates that additional PDSCH DMRS is scheduled, the capability of the terminal device is capability 1, the network device can know from the lookup table 2 that the first processing time is 13 OFDM symbols.Or for example, the subcarrier spacing of the signal carried by the first physical downlink shared channel indicated by the first configuration information is 15KHz, that is, μ_DLWhen the first configuration information indicates that the time scheduling unit is 2 OFDM symbols, the network device may find that the first processing time is 5 OFDM symbols by looking up table 4.

By adopting the implementation manner a1, it is simpler to determine the first processing time directly according to the first configuration information and the first mapping relationship.

In implementation a2, if the first PDSCH carries retransmission data of the first transport block, the network device determines a second mapping relationship between the subcarrier spacing and the processing time, and the network device determines the first processing time according to the first subcarrier spacing and the second mapping relationship.

Herein, the mapping relationship between the subcarrier spacing and the processing time is referred to as a second mapping relationship.

One second mapping relationship is, for example, the processing time corresponding to one subcarrier interval in the second mapping relationship is the processing time with the largest value among all the processing times corresponding to the subcarrier interval in the first mapping relationship.

Taking table 3 as an example, for example, if the subcarrier interval of the signal carried by the pdcch is 15KHz, that is, μ DL is 0, then, as can be seen from tables 2,3 and 4, all the processing times corresponding to the subcarrier interval include [8,13, 2.5-4, 12,5,6,3,7] OFDM symbols, where 13 is the largest value, and in the second mapping relationship, the processing time corresponding to the subcarrier interval of 15KHz is 13 OFDM symbols. For example, the first scheduling configuration information indicates that the subcarrier interval of the signal carried by the first physical downlink shared channel is 15KHz, and the first PDSCH carries retransmission data of the first transport block, the network device may determine that the first processing time is 13 OFDM symbols by querying the second mapping relationship.

Of course, such a second mapping relationship is only an example, and the embodiment of the present application does not limit the mapping relationship between the subcarrier spacing and the processing time.

The implementation mode a2 is simple, and the processing time with the largest value among all the processing times corresponding to the subcarrier interval can be used as the processing time of the subcarrier interval, so that the situation that the determined first processing time is too short is reduced, and it is ensured that the terminal device can complete decoding and other operations of the signal carried by the first physical downlink shared channel within the first processing time, and thus the first feedback signal can be normally sent to the network device.

Implementation a3, if the first PDSCH carries retransmission data of the first transport block, the network device determines the default processing time, and the network device determines that the first processing time is the default processing time.

The default processing time may be predefined by the protocol or may be defined by the network device. For example, the same default processing time may be defined for different subcarrier intervals, or different default processing times may be defined for different subcarrier intervals, such that the defined default processing times are more realistic.

For example, if the same default processing time is defined for different subcarrier intervals, one way to define the default processing time is to determine the maximum value of the processing time in at least one of tables 2,3, and 4 and define the maximum value as the default processing time.

Alternatively, if different default processing times are defined for different subcarrier intervals, one way to define the default processing times is to determine the maximum value of all processing times corresponding to one subcarrier interval in at least one of tables 2,3 and 4, and define the maximum value as the default processing time corresponding to the subcarrier interval.

The maximum value is selected and defined as the default processing time, which is all to reduce the occurrence of the situation that the determined first processing time is too short, and ensure that the terminal device can complete decoding and other operations of the signal carried by the first physical downlink shared channel within the first processing time, so that the first feedback signal can be normally sent to the network device.

Alternatively, the default processing time may not be defined according to the first mapping relationship, for example, the default processing time may be defined according to experience or other relevant factors.

In implementation a4, if the first PDSCH carries retransmission data of the first transport block, the network device obtains a first mapping relationship between the scheduling configuration and the processing time, the network device determines a third processing time according to the first scheduling configuration information and the first mapping manner, and the network device determines that the first processing time is the sum of the third processing time and the first margin.

The first mapping relation may refer to the introduction of the implementation a 1. The third processing time determined by the network device is the processing time determined according to the first scheduling configuration information and the first mapping relationship, and the specific determination manner can also refer to the introduction of the implementation manner a 1.

After determining the third processing time, the network device may add the first margin to the third processing time, and the obtained value is determined as the first processing time. The first margin may be understood as extra downlink processing time, which may be set by a network device, for example, set by a network according to historical experience and send the value to a terminal device, or may also be specified by a protocol, for example, a protocol specifies a definition mode of the first margin, where for example, the first margin may be determined according to at least one of a subcarrier interval, an initial transmission scheduling duration, and a retransmission scheduling duration, for example, subcarrier detection is 15kHz, and a value of the first margin is 4 OFDM symbols; the subcarrier detection is 30kHz, and the first margin value is 8 OFDM symbols; the subcarrier detection is 60kHz, the first margin value is 16 OFDM symbols, etc.

For example, the same first margin may be defined for different subcarrier spacings, or different first margins may be defined for different subcarrier spacings, such that the defined first margins are more realistic.

Implementation a5, the network device determines a fifth processing time and a sixth processing time, and determines the first processing time according to the fifth processing time and the sixth processing time, for example, determines the first processing time as the sum of the fifth processing time and the sixth processing time minus the PDCCH transmission time. The fifth processing time is processing time for a physical downlink control channel, and the sixth processing time is processing time for a physical downlink shared channel, where the physical downlink control channel is, for example, a PDCCH, and the physical downlink shared channel is, for example, a PDSCH.

As an understanding, the fifth processing time may be from the end of receiving the last symbol of the physical downlink control channel by the terminal device to the end of analyzing the physical downlink control channel by the terminal device. The sixth processing time may be from the end of the physical downlink control channel analysis by the terminal device to the end of the physical downlink shared channel reception by the terminal device.

It is to be understood that this is a conceptual way, the fifth processing time and the sixth processing time are both defined in advance by a protocol, and when the fifth processing time and the sixth processing time are set, it may not need to consider factors such as subcarrier spacing, that is, no matter what kind of subcarrier spacing is carried by a signal for the first physical downlink shared channel or the second physical downlink shared channel, if the downlink processing time is to be calculated, the same fifth processing time and sixth processing time are used. Or, when the fifth processing time and/or the sixth processing time are set, factors such as subcarrier intervals may also be considered, for example, different fifth processing time and/or sixth processing time may be set for different subcarrier intervals, and it may be understood that the subcarrier intervals have a mapping relationship with the fifth processing time and/or the sixth processing time, and for a corresponding first physical downlink shared channel or for a corresponding second physical downlink shared channel, the fifth processing time and/or the sixth processing time may be determined according to the subcarrier intervals of signals carried by the corresponding first physical downlink shared channel, so as to better meet the actual situation. For example, considering the subcarrier spacing and the like when the fifth processing time and the sixth processing time are set, one type of fifth processing time is 1 OFDM symbol when the subcarrier spacing is 15 KHz.

The method is simple, excessive parameters are not required to be defined, and calculation is only required according to the known fifth processing time and the sixth processing time.

Implementation a6, the network device determines a seventh processing time and an eighth processing time, and determines that the first processing time is the sum of the seventh processing time and the eighth processing time. The seventh processing time is a time irrelevant to the scheduling process, the DM-RS and the like when the downlink data is processed, and the eighth processing time is a time relevant to the scheduling process, the DM-RS and the like when the downlink data is processed.

As an example, the eighth processing time may be calculated, for example, by the following formula:

n1_ scalable ═ N1_ condition ═ PDSCH length BW/SCS equation (1)

N1_ scalable represents the eighth processing time, N1_ condition may take different values according to the capabilities of different terminal devices or different DM-RS patterns (patterns), PDSCH length represents the time domain transmission length of the physical downlink shared channel, SCS represents the subcarrier spacing of signals carried by the physical downlink shared channel, and BW bandwidth is the frequency domain length of the physical downlink shared channel. It can be understood that the eighth processing time is proportional to a time domain transmission length of the physical downlink shared channel and inversely proportional to a subcarrier spacing of a signal carried by the physical downlink shared channel. In addition, if the DM-RS mode is without additional PDSCH DM-RS configuration, the value of N1_ condition may be smaller, for example, 1, whereas if the DM-RS mode is with additional PDSCH DM-RS configuration, the value of N1_ condition may be larger, for example, 4, than without DM-RS.

The seventh processing time may be specified by a protocol. When the fifth processing time and the seventh processing time are set, it is not necessary to consider factors such as the DM-RS pattern, that is, for the first physical downlink shared channel and the second physical downlink shared channel, the same seventh processing time is used regardless of the corresponding DM-RS pattern if the downlink processing time is to be calculated. Or, when the seventh processing time is set, factors such as the DM-RS pattern may also be considered, for example, different seventh processing times may be set for different DM-RS patterns, and it may be understood that the DM-RS pattern and the seventh processing time have a mapping relationship, and for a corresponding first physical downlink shared channel or for a corresponding second physical downlink shared channel, the seventh processing time may be determined according to the DM-RS pattern corresponding to the first physical downlink shared channel or the second physical downlink shared channel, so as to better meet the actual situation. If different seventh processing time is set for different DM-RS patterns, the value of the seventh processing time may be smaller if the DM-RS pattern is without additional PDSCH DM-RS configuration, and may be larger if the DM-RS pattern is with additional PDSCH DM-RS configuration.

In the manner a as described above, the first processing time is determined according to the first scheduling configuration information and the predefined rule. Referring to the method B, the first processing time may be determined together with the initial transmission data of the first transport block.

And B, if the first PDSCH carries retransmission data of the first transmission block, determining first processing time according to the first scheduling configuration information and the second scheduling configuration information.

The second scheduling configuration information is scheduling configuration information of the initial transmission data of the first transport block, or it is understood that the second scheduling configuration information is scheduling configuration information of a second physical downlink shared channel of the initial transmission data of the first transport block, and the physical downlink shared channel carrying the initial transmission data of the first transport block is referred to as a second physical downlink shared channel herein. The network device may obtain the second scheduling configuration information of the first transport block, and then determine the first processing time according to the first scheduling configuration information and the second scheduling configuration information. The second scheduling configuration information includes at least one of a second time domain transmission length of the second physical downlink shared channel, a second subcarrier interval of a signal of the second physical downlink shared channel, and a second reference signal mapping manner of a demodulation reference signal of the second physical downlink shared channel, where the time domain transmission length of the second physical downlink shared channel is referred to as the second time domain transmission length, the subcarrier interval of the signal carried by the second physical downlink shared channel is referred to as the second subcarrier interval, and the mapping manner of the demodulation reference signal of the second physical downlink shared channel is referred to as the second reference signal mapping manner.

The network device firstly determines to use a second physical downlink shared channel to carry the initial transmission data of the first transmission block, and then the network device needs to determine scheduling configuration information of the second physical downlink shared channel, that is, second scheduling configuration information. And the initial transmission data of the first transport block is sent before the retransmission data of the first transport block, or it is understood that the process of the network device sending the second physical downlink shared channel occurs before S41, so the network device may obtain the second scheduling configuration information before obtaining the first scheduling configuration information. Then after the network device obtains the first scheduling configuration information, the network device may determine the first processing time according to the first scheduling configuration information and the second scheduling configuration information.

Specifically, the mode B may further include a mode B1 and a mode B2.

In the mode B1, the network device obtains the first mapping relationship between the scheduling configuration information and the processing time, may determine the third processing time according to the first scheduling configuration information and the first mapping relationship, and may determine the second processing time according to the second scheduling configuration information and the first mapping relationship, and then the network device determines the first processing time according to the third processing time and the second processing time.

The first mapping manner may refer to the introduction of the implementation manner a 1. The processing time determined according to the first scheduling configuration information and the first mapping relation is referred to herein as a third processing time, and the processing time determined according to the second scheduling configuration information and the first mapping relation is referred to herein as a second processing time.

The determination of the first processing time according to the third processing time and the second processing time may be implemented in different manners, or may be understood as a plurality of different implementations under the manner B1, which are described below.

Implementation B11, the network device determines that the first processing time is the sum of the third processing time and the second processing time.

That is, the network device directly determines the sum of the second processing time and the third processing time as the first processing time, which is a simple manner.

Implementation B12, the network device determines that the first processing time is the largest value between the third processing time and the second processing time.

That is, the network device compares the second processing time with the third processing time, and determines that the value of the second processing time is larger than the value of the third processing time as the first processing time.

Whether the sum of the second processing time and the third processing time is determined as the first processing time or the larger one of the second processing time and the third processing time is determined as the first processing time, the probability that the terminal equipment cannot finish decoding due to the short first processing time is reduced, and the terminal equipment can finish decoding and other work of a signal carried by a first physical downlink shared channel in the first processing time, so that a first feedback signal can be normally sent to the network equipment.

Implementation B13, the network device determines the first processing time to be the second processing time.

That is, the network device directly determines the processing time (i.e., the second processing time) determined according to the second scheduling configuration information and the first mapping relationship as the first processing time.

The implementation B13 does not need to calculate the sum of the second processing time and the third processing time, nor need to compare the magnitudes of the second processing time and the third processing time, which is simple and direct.

Mode B2, the network device determines the first processing time according to the first scheduling configuration information, the second scheduling configuration information, the first time domain transmission length, and the second time domain transmission length.

The first time domain length is a time domain length of a first physical downlink shared channel indicated by the first scheduling configuration information, and the second time domain length is a time domain length of a second physical downlink shared channel indicated by the second scheduling configuration information.

In the mode B2, the network device may determine a size relationship between a difference between the first time domain transmission length and the second time domain transmission length and the first threshold, and according to a difference of the determination result of the network device, the mode B2 includes a plurality of different implementation modes, which are described below.

In implementation B21, the network device determines that the difference between the first time domain transmission length and the second time domain transmission length is smaller than or equal to the first threshold, and then the network device determines the third processing time according to the first scheduling configuration information and the first mapping relationship, and determines that the first processing time is the third processing time.

Equivalently, if the network device determines that the difference between the first time domain transmission length and the second time domain transmission length is less than or equal to the first threshold, the network device may employ implementation a1 to determine the first processing time.

At least one length interval may be preset, and if the first time domain transmission length and the second time domain transmission length are both within one preset length interval, it is determined that a difference between the first time domain transmission length and the second time domain transmission length is less than or equal to a first threshold.

For example, several length sections [1,2], [3,4], [5,7], and [8,14] may be preset, and the units are OFDM symbols. If the first time domain transmission length and the second time domain transmission length are both within one of the length intervals, the difference between the first time domain transmission length and the second time domain transmission length is considered to be less than or equal to a first threshold. For example, the first time domain transmission length is 1 OFDM symbol, and the second time domain transmission length is 2 OFDM symbols, then both the first time domain transmission length and the second time domain transmission length are located in the length interval [1,2], and the network device may determine that a difference between the first time domain transmission length and the second time domain transmission length is less than or equal to a first threshold. Or, for example, if the first time domain transmission length is 1 OFDM symbol, and the second time domain transmission length is 4 OFDM symbols, the first time domain transmission length is located in the length interval [1,2], and the second time domain transmission length is located in the length interval [3,4], that is, the first time domain transmission length and the second time domain transmission length are not located in one length interval, and the network device may determine that a difference between the first time domain transmission length and the second time domain transmission length is greater than the first threshold.

In the embodiment of the present application, for time domain transmission lengths located in the same length interval, if the downlink processing time of the terminal device is determined according to the first mapping relationship, the time domain transmission lengths used for determining the downlink processing time of the terminal device are all the maximum time domain transmission length of the length interval. For example, the first time domain transmission length is 3 OFDM symbols, the second time domain transmission length is 4 OFDM symbols, both the first time domain transmission length and the second time domain transmission length are located in the same length interval, the length interval is [3,4], when the processing time is determined according to the first scheduling configuration parameter and the first mapping relationship, the processing is performed with the first time domain transmission length being 4 OFDM symbols, and when the processing time is determined according to the second scheduling configuration parameter and the first mapping relationship, the second time domain transmission length is also 4 OFDM symbols. It can be seen that the determined processing time may be the same if the first time domain transmission length and the second time domain transmission length are within the same length interval. Thus, implementation B21 may also be: the network device determines that a difference between the first time domain transmission length and the second time domain transmission length is less than or equal to a first threshold, the network device may determine a third processing time according to the first scheduling configuration information and the first mapping relationship, and determine that the first processing time is the third processing time, or the network device may also determine a second processing time according to the second scheduling configuration information and the first mapping relationship, and determine that the first processing time is the second processing time, because the third processing time and the second processing time may be the same, or may not differ too much.

Implementation B22, the network device determines that the difference between the first time domain transmission length and the second time domain transmission length is greater than the first threshold, and the processing manner of the network device may include at least one of the following processing manners:

the network equipment determines default processing time and determines that the first processing time is the default processing time;

the network equipment determines a second mapping relation between the subcarrier intervals and the processing time, and determines the first processing time according to the first subcarrier intervals and the second mapping relation;

the network equipment acquires a first mapping relation between the scheduling configuration information and the processing time, determines third processing time according to the first scheduling configuration information and the first mapping mode, and determines that the first processing time is the sum of the third processing time and the first allowance.

It may be appreciated that if the network device determines that the difference between the first time domain transmission length and the second time domain transmission length is greater than the first threshold, the network device may employ implementation a2, implementation A3, or implementation a4 as before to determine the first processing time.

As described above, various manners in which the terminal device and the network device determine the first processing time according to the first scheduling configuration information are introduced, in practical applications, different manners may be selected according to different situations, for example, which manner can be indicated by the network device to use, or a corresponding manner may be determined according to a specification of a protocol, which is not limited in the embodiment of the present application.

In addition, in the technical solution introduced above, the first processing time is used for determining a first processing time, where the first processing time is for retransmission data of a first transport block, and for initial transmission data (or referred to as new transmission data) of the first transport block, if a downlink processing time is to be determined, that is, a processing time of a second physical downlink shared channel is determined, which is referred to as a fourth processing time herein, a processing manner of the network device and the terminal device may be: the network equipment acquires a first mapping relation between the scheduling configuration information and the processing time, determines second processing time according to the second scheduling configuration information and the first mapping mode, and determines the second processing time as fourth processing time. That is, for the initial transmission data, the network device and the terminal device may determine the downlink processing time directly according to the scheduling configuration information of the physical downlink shared channel carrying the initial transmission data and the first mapping relationship.

By the technical scheme provided by the embodiment of the application, the initial data transmission or the data retransmission can be identified, so that the downlink processing time of the terminal equipment can be determined in different modes, and the determined downlink processing time is more accurate.

In the technical solutions described above, there is no limitation on the first scheduling configuration, and only the first scheduling configuration information may be utilized when determining the first processing time. It is considered that the process of determining the first processing time can be further simplified if the first scheduling configuration is restricted in advance so that the first scheduling configuration is close to the second scheduling configuration.

In view of this, in the embodiment shown in fig. 4, a specific implementation manner of step S41 is that the network device may obtain the second scheduling configuration information of the first transport block, and determine the first scheduling configuration information according to the second scheduling configuration information, so that the first scheduling configuration information is close to or the same as the second scheduling configuration information. Specifically, the determining the first scheduling configuration information according to the second scheduling configuration information includes, but is not limited to, at least one of the following manners:

1. the network device determines that a difference between the first time domain transmission length and the second time domain transmission length is smaller than a first threshold, that is, the difference between the first time domain transmission length and the second time domain transmission length is smaller than the first threshold through configuration.

For example, some length intervals, for example, several length intervals such as [1,2], [3,4], [5,7], and [8,14], may be preset, the units are OFDM symbols, and the first time domain transmission length and the second time domain transmission length are set to be located in the same length interval. For example, the second time domain transmission length is 5, and is within the length interval [5,7], the first time domain transmission length may be set to be 5,6 or 7, so that the first time domain transmission length and the second time domain transmission length are within one length interval.

And if the first threshold value is zero, the network equipment determines that the first time domain transmission length is equal to the second time domain transmission length.

As described above, in the embodiments of the present application, it may be stated that, for time domain transmission lengths located in the same length interval, if the downlink processing time of the terminal device is determined according to the first mapping relationship, the time domain transmission lengths used for determining the downlink processing time of the terminal device are all the maximum time domain transmission lengths of the length interval, that is, for the time domain transmission lengths located in the same length interval, the time domain transmission lengths are all treated uniformly according to the maximum time domain transmission length of the length interval. In this respect, the difference between the first time domain transmission length and the second time domain transmission length is smaller than the first threshold, which may also be understood as making the first time domain transmission length and the second time domain transmission length equal, but the equality is not substantially equal, and only the downlink processing time is determined according to the same time domain transmission length.

2. The network device determines that the first subcarrier spacing is the same as the second subcarrier spacing. That is, by configuration, the first subcarrier spacing is the same as the second subcarrier spacing.

For example, the second scheduling configuration parameter indicates that the second subcarrier spacing is 15KHz, the network device may make the first subcarrier spacing indicated by the first scheduling configuration parameter also be 15 KHz.

3. The network device determines that the first reference signal mapping mode is the same as the second reference signal mapping mode. That is, the first reference signal mapping manner is the same as the second reference signal mapping manner by configuration.

For example, if the second reference signal mapping manner indicated by the second scheduling configuration parameter is configured without additional PDSCH DM-RS, the network device may make the first reference signal mapping manner indicated by the first scheduling configuration parameter also configured without additional PDSCH DM-RS.

The following describes the apparatus provided by the embodiments of the present application with reference to the drawings.

Fig. 5 shows a schematic structural diagram of a network device 500. The network device 500 may implement the functionality of the network devices referred to above. The network device 500 may be the network device described above, or may be a chip provided in the network device described above. The network device 500 may include a processor 501 and a transceiver 502. Among other things, the processor 501 may be used to perform S41, S42, S43 in the embodiment shown in fig. 43, and/or other processes for supporting the techniques described herein. Transceiver 502 may be used to perform S44 in the embodiment shown in fig. 4, and/or other processes for supporting the techniques described herein.

For example, the processor 501 is configured to determine a first scheduling configuration of a first physical downlink shared channel, where the first physical downlink shared channel is used to carry retransmission data of a first transport block, and the first scheduling configuration includes at least one of a first time domain transmission length of the first physical downlink shared channel, a first subcarrier interval of a signal of the first physical downlink shared channel, and a first reference signal mapping manner of a demodulation reference signal of the first physical downlink shared channel;

the processor 501 is further configured to determine a first processing time for the first physical downlink shared channel according to a first scheduling configuration of the first physical downlink shared channel;

the processor 501 is further configured to determine, according to the first processing time, transmission time for the terminal device to send a first feedback signal, where the first feedback signal is used to carry a feedback signal for the first physical downlink shared channel;

a transceiver 502, configured to send the first scheduling configuration information, the transmission time of the first feedback signal, and the first physical downlink shared channel.

All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

Fig. 6 shows a schematic structural diagram of a terminal device 600. The network device 600 may implement the functionality of the network devices referred to above. The terminal device 600 may be the terminal device described above, or may be a chip provided in the terminal device described above. The terminal device 600 may include a processor 601 and a transceiver 602. Processor 601 may be used, among other things, to perform S45 in the embodiment shown in fig. 4, and/or other processes for supporting the techniques described herein. Transceiver 602 may be used to perform S44 in the embodiment shown in fig. 4, and/or other processes for supporting the techniques described herein.

For example, the processor 601 is configured to determine first scheduling configuration information of a first physical downlink shared channel, where the first physical downlink shared channel is used to carry retransmission data of a first transport block, and the first scheduling configuration information includes at least one of a first time domain transmission length of the first physical downlink shared channel, a first subcarrier interval of a signal of the first physical downlink shared channel, and a first reference signal mapping manner of a demodulation reference signal of the first physical downlink shared channel;

a transceiver 602, configured to receive the first physical downlink shared channel;

a transceiver 602, further configured to receive the first scheduling configuration information;

the transceiver 602 is further configured to receive a transmission time of a feedback signal of the first physical downlink shared channel.

The processor 601 is further configured to determine a first processing time according to the first scheduling configuration information, where the terminal device does not send a feedback signal for the first physical downlink shared channel within the first processing time after receiving the first physical downlink shared channel end time.

In a simple embodiment, those skilled in the art may think that the network device 500 or the terminal device 600 may also be implemented by the structure of the communication apparatus 700 as shown in fig. 7A. The communication apparatus 700 may implement the functions of the network device or the terminal device referred to above. The communication device 700 may include a processor 701. Where the communications apparatus 700 is used to implement the functionality of a network device in the embodiment shown in fig. 4, the processor 701 may be configured to perform S41, S42, S43 in the embodiment shown in fig. 4, and/or other processes for supporting the techniques described herein. When the communication apparatus 700 is used to implement the functions of the terminal device in the embodiment shown in fig. 4, the processor 701 may be configured to execute S45 in the embodiment shown in fig. 4, and/or other processes for supporting the techniques described herein.

The communication device 700 may be implemented by a field-programmable gate array (FPGA), an application-specific integrated circuit (ASIC), a system on chip (SoC), a Central Processing Unit (CPU), a Network Processor (NP), a digital signal processing circuit (DSP), a Micro Controller Unit (MCU), or a programmable controller (PLD) or other integrated chips, and the communication device 600 may be disposed in the network device or the terminal device according to the embodiment of the present application, so that the network device or the terminal device implements the wireless communication method according to the embodiment of the present application.

In an alternative implementation, the communication apparatus 700 may further include a memory 702, which may refer to fig. 7B, wherein the memory 702 is used for storing computer programs or instructions, and the processor 701 is used for decoding and executing the computer programs or instructions. It will be appreciated that these computer programs or instructions may comprise the functional programs of the network devices or terminal devices described above. When the functional program of the network device is decoded and executed by the processor 701, the network device can be enabled to implement the functions of the network device in the wireless communication method provided by the embodiment shown in fig. 4 in this application. When the functional program of the terminal device is decoded and executed by the processor 701, the terminal device may be enabled to implement the functions of the terminal device in the method for wireless communication provided by the embodiment shown in fig. 4 of the embodiment of the present application.

In an alternative implementation, the functional programs of these network devices or terminal devices are stored in a memory external to the communication apparatus 700. When the functional program of the network device is decoded and executed by the processor 701, part or all of the content of the functional program of the network device is temporarily stored in the memory 702. When the terminal device function program is decoded and executed by the processor 701, a part or all of the terminal device function program is temporarily stored in the memory 702.

In an alternative implementation, the functional programs of these network devices or terminal devices are provided in a memory 702 stored inside the communication apparatus 700. When the memory 702 inside the communication apparatus 700 stores the function program of the network device, the communication apparatus 700 may be provided in the network device according to the embodiment of the present application. When the memory 702 inside the communication apparatus 700 stores the function program of the terminal device, the communication apparatus 700 may be provided in the terminal device of the embodiment of the present application.

In yet another alternative implementation, some of the contents of the functional programs of these network devices are stored in a memory external to communications apparatus 700, and other portions of the contents of the functional programs of these network devices are stored in memory 702 internal to communications apparatus 700. Alternatively, a part of the contents of the function programs of these terminal devices are stored in a memory external to communication apparatus 700, and the other part of the contents of the function programs of these terminal devices are stored in memory 702 inside communication apparatus 700.

In the embodiment of the present application, the network device 500, the terminal device 600, and the communication apparatus 700 may be presented in a form of dividing each function module according to each function, or may be presented in a form of dividing each function module in an integrated manner. As used herein, a "module" may refer to an ASIC, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other components that provide the described functionality.

In addition, the embodiment shown in fig. 5 provides a network device 500 that can be implemented in other forms. For example, the network device includes a processing module and a transceiver module. For example, the processing module may be implemented by the processor 501 and the transceiver module may be implemented by the transceiver 502. Among other things, the processing module may be used to perform S41, S42, S43 in the embodiment shown in fig. 4, and/or other processes for supporting the techniques described herein. The transceiver module may be used to perform S44 in the embodiment shown in fig. 4, and/or other processes for supporting the techniques described herein.

For example, the processing module is configured to determine a first scheduling configuration of a first physical downlink shared channel, where the first physical downlink shared channel is used to carry retransmission data of a first transport block, and the first scheduling configuration includes at least one of a first time domain transmission length of the first physical downlink shared channel, a first subcarrier interval of a signal of the first physical downlink shared channel, and a first reference signal mapping manner of a demodulation reference signal of the first physical downlink shared channel;

the processing module is further configured to determine a first processing time for the first physical downlink shared channel according to a first scheduling configuration of the first physical downlink shared channel;

the processing module is further configured to determine, according to the first processing time, transmission time for the terminal device to send a first feedback signal, where the first feedback signal is used to carry a feedback signal for the first physical downlink shared channel;

a transceiver module, configured to send the first scheduling configuration information, the transmission time of the first feedback signal, and the first physical downlink shared channel.

The embodiment shown in fig. 6 provides a terminal device 600 that can be implemented in other forms. The terminal device comprises, for example, a processing module and a transceiver module. For example, the processing module may be implemented by the processor 601 and the transceiver module may be implemented by the transceiver 602. Among other things, the processing module may be used to perform S45 in the embodiment shown in fig. 4, and/or other processes for supporting the techniques described herein. The transceiver module may be used to perform S44 in the embodiment shown in fig. 4, and/or other processes for supporting the techniques described herein.

For example, the processing module is configured to determine first scheduling configuration information of a first physical downlink shared channel, where the first physical downlink shared channel is used to carry retransmission data of a first transport block, and the first scheduling configuration information includes at least one of a first time domain transmission length of the first physical downlink shared channel, a first subcarrier interval of a signal of the first physical downlink shared channel, and a first reference signal mapping manner of a demodulation reference signal of the first physical downlink shared channel;

a transceiver module, configured to receive the first physical downlink shared channel;

a transceiver further configured to receive the first scheduling configuration information;

and the transceiver is further configured to receive the transmission time of the feedback signal of the first physical downlink shared channel.

The processing module is further configured to determine a first processing time according to the first scheduling configuration information, where the terminal device does not send a feedback signal for the first physical downlink shared channel within the first processing time after receiving the end time of the first physical downlink shared channel.

Since the network device 500, the terminal device 600, and the communication apparatus 700 provided in the embodiment of the present application can be used to execute the method provided in the embodiment shown in fig. 4, the technical effects obtained by the method can refer to the above method embodiment, and are not described herein again.

Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In the above embodiments, the implementation may be wholly or partially realized 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, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the 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 Digital Versatile Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.

Claims

1. A method of wireless communication, comprising:

the method comprises the steps that network equipment determines a first scheduling configuration of a first physical downlink shared channel, wherein the first physical downlink shared channel is used for carrying retransmission data of a first transmission block, and the first scheduling configuration comprises at least one of a first time domain transmission length of the first physical downlink shared channel, a first subcarrier interval of a signal of the first physical downlink shared channel, and a first reference signal mapping mode of a demodulation reference signal of the first physical downlink shared channel;

the network equipment determines a first processing time for the first physical downlink shared channel according to a first scheduling configuration of the first physical downlink shared channel, wherein the first processing time is longer than a processing time corresponding to the first transmission block when the first transmission block carries data through the physical downlink shared channel;

the network device determines, according to the first processing time, transmission time for sending a first feedback signal by a terminal device, where the first feedback signal is used to carry a feedback signal for the first physical downlink shared channel;

and the network equipment sends the first scheduling configuration information, the transmission time of the first feedback signal and the first physical downlink shared channel.

2. The method of claim 1, further comprising:

the network device obtains second scheduling configuration information of the first transport block, where the second scheduling configuration information is scheduling configuration information of a second physical downlink shared channel carrying initial transport data of the first transport block, and the second scheduling configuration information includes at least one of a second time domain transmission length of the second physical downlink shared channel, a second subcarrier interval of a signal of the second physical downlink shared channel, and a second reference signal mapping manner of a demodulation reference signal of the second physical downlink shared channel;

and the network equipment determines the first scheduling configuration information according to the second scheduling configuration information.

3. The method of claim 2, wherein the network device determines the first scheduling configuration information according to the second scheduling configuration information, and wherein the determining comprises at least one of:

the network equipment determines that the deviation between the first time domain transmission length and the second time domain transmission length is smaller than a first threshold;

the network device determining that the first subcarrier spacing is the same as the second subcarrier spacing;

the network device determines that the first reference signal mapping mode is the same as the second reference signal mapping mode.

4. The method according to claim 1, wherein the network device determines, according to the first scheduling configuration information of the first physical downlink shared channel, the first processing time for the first physical downlink shared channel, and includes at least one of:

the network equipment acquires a first mapping relation between scheduling configuration information and processing time, and determines the first processing time according to the first scheduling configuration information and the first mapping relation;

the network equipment determines a second mapping relation between the subcarrier intervals and the processing time, and the network equipment determines the first processing time according to the first subcarrier intervals and the second mapping relation;

the network equipment determines default processing time, and the network equipment determines the first processing time as the default processing time;

the network equipment acquires a first mapping relation between scheduling configuration information and processing time, determines third processing time according to the first scheduling configuration information and the first mapping relation, and determines that the first processing time is the sum of the third processing time and a first margin.

5. The method of claim 1, wherein the determining, by the network device, a first processing time for the first physical downlink shared channel according to the first scheduling configuration information of the first physical downlink shared channel comprises:

and the network equipment determines the first processing time according to the first scheduling configuration information and the second scheduling configuration information.

6. A method of wireless communication, comprising:

the terminal equipment receives a first physical downlink shared channel;

the terminal device determines first scheduling configuration information of the first physical downlink shared channel, where the first physical downlink shared channel is used to carry retransmission data of a first transport block, and the first scheduling configuration information includes at least one of a first time domain transmission length of the first physical downlink shared channel, a first subcarrier interval of a signal of the first physical downlink shared channel, and a first reference signal mapping manner of a demodulation reference signal of the first physical downlink shared channel;

the terminal device determines a first processing time according to the first scheduling configuration information, wherein the terminal device does not send a feedback signal for the first physical downlink shared channel within the first processing time after receiving the end time of the first physical downlink shared channel, and the first processing time is longer than a processing time corresponding to when the initial transmission data of the first transport block is carried by the physical downlink shared channel.

7. The method of claim 6, wherein the terminal device determines the first processing time according to the first scheduling configuration information, and wherein the first processing time comprises at least one of:

the terminal equipment acquires a first mapping relation between scheduling configuration information and processing time, and determines first processing time according to the first scheduling configuration information and the first mapping relation;

the terminal equipment determines a second mapping relation between the subcarrier intervals and the processing time, and the terminal equipment determines the first processing time according to the first subcarrier intervals and the second mapping relation;

the terminal equipment determines default processing time, and the terminal equipment determines that the first processing time is the default processing time;

the terminal equipment obtains a first mapping relation between scheduling configuration information and processing time, and determines third processing time according to the first scheduling configuration information and the first mapping relation, wherein the first processing time is the sum of the third processing time and a first allowance.

8. The method of claim 6, wherein the determining, by the terminal device, the first processing time according to the first scheduling configuration information comprises:

the terminal device obtains second scheduling configuration information of the first transport block, where the second scheduling configuration information is scheduling configuration information of a second physical downlink shared channel carrying initial transport data of the first transport block, and the second scheduling configuration information includes at least one of a second time domain transmission length of the second physical downlink shared channel, a second subcarrier interval of a signal of the second physical downlink shared channel, and a second reference signal mapping manner of a demodulation reference signal of the second physical downlink shared channel;

and the terminal equipment determines the first processing time according to the first scheduling configuration information and the second scheduling configuration information.

9. A network device comprising means for performing the method of any of claims 1 to 5.

10. An apparatus for implementing a method of wireless communication, comprising a receiver, a transmitter, and a processor, characterized in that:

the receiver is configured to receive a first physical downlink shared channel;

the processor is configured to determine first scheduling configuration information of the first physical downlink shared channel, where the first physical downlink shared channel is used to carry retransmission data of a first transport block, and the first scheduling configuration information includes at least one of a first time domain transmission length of the first physical downlink shared channel, a first subcarrier interval of a signal of the first physical downlink shared channel, and a first reference signal mapping manner of a demodulation reference signal of the first physical downlink shared channel;

the processor is further configured to determine a first processing time according to the first scheduling configuration information, where the transmitter does not send a feedback signal for the first physical downlink shared channel within the first processing time after the receiver receives the end time of the first physical downlink shared channel, and the first processing time is longer than a processing time corresponding to when the receiver carries the initial transmission data of the first transport block through the physical downlink shared channel.

11. The apparatus of claim 10, wherein:

the processor acquires a first mapping relation between scheduling configuration information and processing time, and determines first processing time according to the first scheduling configuration information and the first mapping relation; and/or

The processor determines a second mapping relation between the subcarrier intervals and the processing time, and determines the first processing time according to the first subcarrier intervals and the second mapping relation; and/or

The processor determines a default processing time and determines the first processing time as the default processing time; and/or

The processor obtains a first mapping relation between scheduling configuration information and processing time, and determines third processing time according to the first scheduling configuration information and the first mapping relation, wherein the first processing time is the sum of the third processing time and a first margin.

12. The apparatus of claim 10, wherein:

the processor obtains second scheduling configuration information of the first transport block, where the second scheduling configuration information is scheduling configuration information of a second physical downlink shared channel carrying initial transmission data of the first transport block, and the second scheduling configuration information includes at least one of a second time domain transmission length of the second physical downlink shared channel, a second subcarrier interval of a signal of the second physical downlink shared channel, and a second reference signal mapping manner of a demodulation reference signal of the second physical downlink shared channel;

the processor determines the first processing time according to the first scheduling configuration information and the second scheduling configuration information.

13. A communication device comprising at least one processor and at least one memory,

the at least one memory stores a program or instructions for execution by the at least one processor to cause the communication device to implement the method of any of claims 1 to 8.

14. A computer readable storage medium storing a program or instructions which, when executed by one or more processors, carry out the method according to any one of claims 1 to 8.