RU2772884C2 - Method and equipment for determining time domain resource used for non-grant transmission - Google Patents

Abstract

FIELD: communication technologies.

SUBSTANCE: group of inventions relates to communication technologies and, more specifically, to a method and equipment for determining a time domain resource used for a non-grant (without granting permission) transmission. A method for determining a time domain resource used for a non-grant transmission is proposed. The method contains a stage, at which a terminal device receives configuration information of a non-grant transmission resource. Configuration information contains: a parameter of allocation of the time domain resource, a parameter of offset of the time domain resource and a period of the time domain of the non-grant transmission resource. The parameter of allocation of the time domain resource is used to indicate OFDM symbol index in a slot, in which the first non-grant transmission resource is located, and the parameter of offset of the time domain resource is used to indicate an index of a slot, in which the first non-grant transmission resource is located. Further, according to the method, the location of the time domain of the non-grant transmission resource is determined based on OFDM symbol index in the slot, in which the first non-grant transmission resource is located, the index of the slot, in which the first non-grant transmission resource is located, and a period of the time domain of the non-grant transmission resource.

EFFECT: providing that non-grant transmission resources configured for a terminal device in two neighboring periods are not overlapped.

17 cl, 23 dwg, 9 tbl

Description

[0001] This application claims priority over Provisional Application No. 62/588,133 filed with the U.S. Patent and Trademark Office on November 17, 2017 and entitled "METHOD AND APPARATUS FOR DETERMINING TIME-DOMAIN RESOURCE USED FOR GRANT-FREE TRANSMISSION", which is incorporated herein by reference in its entirety.

Technical field

[0002] This application relates to the field of communications and, more specifically, to a method and apparatus for determining a time domain resource used for grant-free (grantless) transmission.

State of the art

[0003] Grantless uplink transmission is a method in which data is sent immediately after it is received. Specifically, when data arrives, instead of sending a Scheduling Request (SR) to the network device to request the network device to allocate an uplink transmission resource, and sending the uplink data to the network device after receiving the grant information (granting), sent by the network device, the terminal device directly sends the uplink data to the network device using the resource previously allocated by the network device, the specified transmission parameter, and the like. Compared with the traditional "grant request" based transmission method, an uplink data sending method in which data is sent immediately after reception, such as uplink grantless transmission, has obvious positive effects. For example, grant-free uplink transmission can significantly reduce the signaling overhead, transmission delay, and power consumption of the terminal device.

[0004] In grantless uplink transmission, the network device must pre-allocate a grantless transmission resource to a terminal device, which specifically includes: allocating a transmission resource, transmission parameters, and the like to the terminal device. The transmission parameters mainly include: a time domain period of a grantless transmission resource, a time domain resource offset parameter, a time domain resource allocation, a frequency domain resource allocation, user-specific demodulation reference signal configuration information, a modulation and coding scheme/transport block size, the number of repetitions, a parameter related to power control, and the like.

[0005] In the prior art, there is a method for configuring grantless transmission resources based on dual periods. Specifically, the grantless resources that are allocated by the network device to the terminal device have two time domain periods, where a long time domain period is used to configure the first grantless resource in the grantless resource group, and a short time domain period is used to configure another grantless resource in the a grantless transfer resource group. In the existing grantless transfer resource configuration method, the previous grantless transfer resource group may overlap the current grantless transfer resource group, resulting in high difficulty in determining the unit of time in which the terminal grantless transfer resource is located.

The essence of the invention

[0006] This application provides a method for determining a time domain resource used for grantless transmission such that grantless transmission resources configured for a terminal device in two adjacent periods do not overlap.

[0007] According to a first aspect, a method is provided for determining a time domain resource used for a grantless transmission, including: obtaining by a terminal device a first time domain period and a second time domain period resources from grantless transmission resources, where the size of the first time domain period is one time P1, the size of the second period of the time domain is equal to units of time P2, and P1 is greater than or equal to P2; receiving, by the terminal device, a number k of grantless transmission resources in the first time domain period; and determining by the terminal device, based on the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period, a time unit index in which the grantless transmission resource used for grantless transmission is located.

[0008] Optionally, the terminal device determines, based on the second time domain period only, the number k of grantless transmission resources that are allocated by the network device to the terminal device.

[0009] Specifically, after the first type grantless transmission resource in the current first time domain period, the terminal device determines the number of second type grantless transmission resources based on the second time domain period P2; and when the determined second type grantless transmission resource is located in the first time domain period following the current first time domain period, ignores or discards the determined second type grantless transmission resource located in the first time domain period following the current first time domain period.

[0010] The number k of grantless transmission resources is determined, and the time unit index in which the grantless transmission resource used for grantless transmission is located is determined based on the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period . Thus, the grantless transmission resources configured for the terminal device in two adjacent periods do not overlap.

[0011] With reference to the first aspect, in an exemplary implementation of the first aspect, determining by the terminal device, based on the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period, the time unit index in which the resource is located of the time domain period, the terminal device determines, based on the time unit index in which the first grantless transmission resource is located, the first time domain period, the second time domain period, and the number k of the grantless transmission resources in the first time domain period, the time unit index, in which the grantless transfer resource is located.

[0012] The number k of the grantless transmission resources is determined, and the time unit index in which the grantless transmission resource used for grantless transmission is located is determined based on the index of the time unit in which the first grantless transmission resource, the first time domain period, the second time domain period is located. area and the number k of the grantless transmission resources in the first time domain period. Thus, the grantless transmission resources configured for the terminal device in two adjacent periods do not overlap.

[0013] With reference to the first aspect, in an exemplary implementation of the first aspect, when the time unit is specifically a mini-slot, the method further includes: obtaining, by the terminal device, mini-slot format information, where the mini-slot format information includes , at least the number of orthogonal frequency division multiplexing OFDM symbols included in each mini-slot and the location of the start OFDM symbol of each mini-slot in each slot, or includes the location of the start OFDM symbol and the location of the end OFDM symbol, which are in every mini-slot in every slot. The number k of the grantless transmission resources in the first time domain period is determined based on the first time domain period, the second time domain period, and the mini-slot format information.

[0014] According to a second aspect, a method for determining a time domain resource used for grantless transmission is provided, including: obtaining by a network device a number k of grantless transmission resources during a first time domain period of the grantless transmission resource; and determining by the network device, based on the first time domain period, the second time domain period of the grantless transmission resource, and the number k of grantless transmission resources in the first time domain period, the time unit index in which the grantless transmission resource used for receiving grantless data is located, where the size of the first period is time domain is equal to units of time P1, the size of the second period of the time domain is equal to units of time P2, and P1 is greater than or equal to P2.

[0015] The number k of grantless transmission resources is determined, and the time unit index in which the grantless transmission resource used for grantless transmission is located is determined based on the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period . Thus, the grantless transmission resources configured for the terminal device in two adjacent periods do not overlap.

[0016] With reference to the second aspect, in an exemplary implementation of the second aspect, determining by the network device, based on the first time domain period, the second time domain period, a grantless transmission resource, and the number k of grantless transmission resources in the first time domain period, a time unit index in which location of the grantless transmission resource used for receiving the grantless data includes: determining by the network device, based on the time unit index, in which the first grantless transmission resource is located, the first time domain period, the second time domain period, and the number k of the grantless transmission resources in the first period time domain, the index of the unit of time in which the grantless transmission resource used to receive the grantless data is located.

[0017] The number k of the grantless transmission resources is determined, and the time unit index in which the grantless transmission resource used for grantless transmission is located is determined based on the index of the time unit in which the first grantless transmission resource is located, the first time domain period, the second time period area and the number k of the grantless transmission resources in the first time domain period. Thus, the grantless transmission resources configured for the terminal device in two adjacent periods do not overlap.

[0018] With reference to the second aspect, in an exemplary implementation of the second aspect, when the unit of time is specifically a mini-slot, the method further includes: determining, by the network device, the mini-slot format information, where the format of the mini-slot format information includes: itself at least the number of OFDM symbols of orthogonal frequency division multiplexing included in each mini-slot and the location of the start OFDM symbol of each mini-slot in each slot, or includes the location of the start OFDM symbol and the location of the end OFDM symbol, which belong to every mini-slot in every slot. The number k of the grantless transmission resources in the first time domain period is determined based on the first time domain period, the second time domain period, and the mini-slot format information.

[0019] According to a third aspect, a terminal device including a processing module is provided. The processing module is configured to obtain a first time domain period and a second time domain period of grantless transmission resources, where the size of the first time domain period is equal to units of time P1, the size of the second time domain period is equal to units of time P2, and P1 is greater than or equal to P2. The processing unit is further configured to obtain the number k of the grantless transmission resources in the first time domain period. The processing module is further configured to determine, based on the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period, a time unit index in which the grantless transmission resource used for grantless transmission is located.

[0020] With reference to a third aspect, in an exemplary implementation of the third aspect, the processing module is further configured to determine, based on the time unit index in which the first grantless transmission resource is located, the first time domain period, the second time domain period, and the number k of the grantless transmission resources in the first time domain period, the index of the time unit in which the grantless transmission resource used for grantless transmission is located.

[0021] With reference to a third aspect, in an exemplary implementation of the third aspect, when the time unit is specifically a mini-slot, the processing module is further configured to obtain mini-slot format information, where the mini-slot format information includes at least least, the number of orthogonal frequency division multiplexing OFDM symbols included in each mini-slot and the location of the start OFDM symbol of each mini-slot in each slot, or includes the location of the start OFDM symbol and the location of the end OFDM symbol that belong to each mini-slot. slot in each slot. Accordingly, the number k of the grantless transmission resources in the first time domain period is determined based on the first time domain period, the second time domain period, and the mini-slot format information.

[0022] According to a fourth aspect, a network device including a processing module is provided. The processing unit is configured to obtain the number k of the grantless transmission resources in the first time domain period of the grantless transmission resource. The processing module is further configured to determine, based on the first time domain period, the second time domain period of the grantless transmission resource, and the number k of grantless transmission resources in the first time domain period, an index of a time unit in which the grantless transmission resource used to receive grantless data is located. The size of the first time domain period is equal to units of time P1, the size of the second period of time domain is equal to units of time P2, and P1 is greater than or equal to P2.

[0023] With reference to a fourth aspect, in an exemplary implementation of the fourth aspect, the processing module is further configured to determine, based on the time unit index in which the first grantless transmission resource is located, the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period, the index of the time unit in which the grantless transmission resource used to receive the grantless data is located.

[0024] With reference to a fourth aspect, in an exemplary implementation of the fourth aspect, when the unit of time is specifically a mini-slot, the processing module is further configured to determine mini-slot format information, where the mini-slot format information includes at least least, the number of orthogonal frequency division multiplexing OFDM symbols included in each mini-slot and the location of the start OFDM symbol of each mini-slot in each slot, or includes the location of the start OFDM symbol and the location of the end OFDM symbol that belong to each mini-slot. slot in each slot. Accordingly, the number k of the grantless transmission resources in the first time domain period is determined based on the first time domain period, the second time domain period, and the mini-slot format information.

[0025] With reference to any of the possible implementations from the first aspect to the fourth aspect, in the possible implementation from the first aspect to the fourth aspect, determine based on the time unit index in which the first grantless transmission resource is located, the first period of the time domain, the second period time domain and the number k of grantless transmission resources in the first time domain period, the index of the time unit in which the grantless transmission resource is located includes: determining the index of the time unit in which the grantless transmission resource Y is located, according to any of the following relationship expressions:

TU_index=Starting_index+floor (Y/k) * P1 + (Y mod k) * P2;

TU_index = [Starting_index+floor (Y/k) * P1 + (Y mod k) * P2] mod X;

TU_index=Starting_index+floor (Y/k) * P1 + (Y mod k) * P2+F2; or

TU_index = [Starting_index+floor (Y/k) * P1 + (Y mod k) * P2+F2] mod X,

where:

F2 represents the correction parameter, and the F2 value is associated with the Y value;

Y is a non-negative integer and is used to indicate the ordinal number of the grantless transfer resource;

X is a preset non-negative integer;

Starting_index represents the index of the time unit in which the first grantless transfer resource is located; and

TU_index represents the index of the time unit in which any grantless transfer resource including the first grantless transfer resource is located.

[0026] With reference to any of the possible implementations from the first aspect to the fourth aspect, in the possible implementation from the first aspect to the fourth aspect, the number k of grantless transmission resources in the first time domain period is determined based on the first time domain period and the second time domain period.

[0027] The number k of the grantless transmission resources is determined based on the first time domain period and the second time domain period, and the time unit index in which the grantless transmission resource used for grantless transmission is located is determined based on the time unit index in which the first resource is located of the grantless transmission, the first time domain period, the second time domain period, and the number k of the grantless transmission resources in the first time domain period. Thus, the grantless transmission resources configured for the terminal device in two adjacent periods do not overlap.

[0028] With regard to any of the possible implementations from the first aspect to the fourth aspect, in the possible implementation from the first aspect to the fourth aspect, determining the number k of grant-free transmission resources in the first time domain period based on the first time domain period and the second time domain period includes :

determining the number k of the grantless transmission resources in the first time domain period according to the following relational expression:

.

.

[0029] With reference to any of the possible implementations from the first aspect to the fourth aspect, in the possible implementation from the first aspect to the fourth aspect, determining the number k of grantless transmission resources in the first time domain period based on the first time domain period and the second time domain period includes into itself: determining the number k of the grantless transmission resources in the first time domain period according to the following relation expression:

, где

, where

T is the number of time units included in any grantless transmission resource in the first time domain period.

[0030] The number k of the grantless transmission resources is determined based on the first time domain period, the second time domain period, and the length of the transmission time unit, and the time unit index in which the grantless transmission resource used for grantless transmission is located is determined based on the time unit index, in which the first grantless transmission resource, the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period are located. Thus, the grantless transmission resources configured for the terminal device during two adjacent periods do not overlap.

[0031] With regard to any of the possible implementations from the first aspect to the fourth aspect, in the possible implementation from the first aspect to the fourth aspect, determining the number k of grant-free transmission resources in the first time domain period based on the first time domain period and the second time domain period includes: itself: determining the number k of the grantless transmission resources in the first time domain period according to the following relation expression:

, где

, where

N represents the maximum number of times of retransmission, where the maximum number of times of retransmission is the maximum number of times to send the same uplink data to the network device before receiving feedback information sent by the network device, and N≥ 1.

[0032] The number k of the grantless transmission resources is determined based on the first time domain period, the second time domain period, and the maximum number of retransmission times, and the time unit index in which the grantless transmission resource used for grantless transmission is located is determined based on the time unit index , in which the first grantless transmission resource, the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period are located. Thus, the grantless transmission resources configured for the terminal device during two adjacent periods do not overlap.

[0033] With regard to any of the possible implementations from the first aspect to the fourth aspect, in the possible implementation from the first aspect to the fourth aspect, determining the number k of grant-free transmission resources in the first time domain period based on the first time domain period and the second time domain period includes: itself: determining the number k of the grantless transmission resources in the first time domain period according to the following relation expression:

, где

, where

T is the number of time units included in any grantless transmission resource in the first time domain period, N is the maximum number of retransmission times, with the maximum retransmission times being the maximum number of times to send the same uplink data to the network device before receiving the feedback information sent by the network device, and N≥1.

[0034] The number k of the grantless transmission resources is determined based on the first time domain period, the second time domain period, the length of the transmission time unit, and the maximum number of times of retransmission, and the index of the time unit in which the grantless transmission resource used for grantless transmission is located is determined based on the time unit index in which the first grantless transmission resource is located, the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period. Thus, the grantless transmission resources configured for the terminal device in two adjacent periods do not overlap.

[0035] With reference to any of the possible implementations from the first aspect to the fourth aspect, in the possible implementation from the first aspect to the fourth aspect, a unit of time includes at least one of the following units of time: a radio frame, a subframe, a slot, and an OFDM symbol multiplexing with orthogonal frequency division.

[0036] According to a fifth aspect, a terminal device is provided. The terminal device includes a memory and a processor. The memory is configured to store the instruction. The processor is configured to execute the instruction stored in the memory, and executing the instruction stored in the memory allows the terminal device to execute the method in any of the first aspect or possible implementations of the first aspect.

[0037] According to a sixth aspect, a computer-readable storage medium is provided. The computer program is stored on a computer-readable storage medium. When the program is executed by the processor, the method according to any of the first aspect or possible implementations of the first aspect is implemented.

[0038] According to a seventh aspect, a computer program product is provided. The computer program product includes computer program code. When computer program code is executed by a processing unit or processor of a terminal device, the terminal device is permitted to execute the method in any of the first aspect or possible implementations of the first aspect.

[0039] According to the eighth aspect, a communication chip is provided. The instruction is stored in the communication chip. When an instruction is executed on a terminal device, the terminal device may execute the method in any of the first aspect or possible implementations of the first aspect.

[0040] According to a ninth aspect, a network device is provided. The network device includes a memory and a processor. The memory is configured to store the instruction. The processor is configured to execute the instruction stored in the memory, and executing the instruction stored in the memory allows the network device to execute the method in any of the second aspect or possible implementations of the second aspect.

[0041] According to a tenth aspect, a computer-readable storage medium is provided. The computer program is stored on a computer-readable storage medium. When the program is executed by the processor, the method of any of the second aspect or possible implementations of the second aspect is implemented.

[0042] According to an eleventh aspect, a computer program product is provided. The computer program product includes computer program code. When the computer program code is executed by the processing unit or processor of the network device, the network device may execute the method in any of the second aspect or possible implementations of the second aspect.

[0043] According to the twelfth aspect, a communication chip is provided. The instruction is stored in the communication chip. When an instruction is executed on a network device, the network device may execute the method in any of the second aspect or possible implementations of the second aspect.

BRIEF DESCRIPTION OF THE DRAWINGS

[0044] FIG. 1 is a schematic architectural diagram of a system according to an embodiment of this application;

[0045] FIG. 2 is a flowchart of a method for determining a time domain resource used for grantless transmission according to an embodiment of this application;

[0046] FIG. 3 is a resource allocation concept for grantless transfer resources configured based on dual periods according to an embodiment of this application;

[0047] FIG. 4 is a schematic diagram of a grantless transfer resource allocation according to an embodiment of this application;

[0048] FIG. 5 is another schematic diagram of resource allocation for grantless transfer resources according to an embodiment of this application;

[0049] FIG. 6 is another schematic diagram of resource allocation for grantless transfer resources according to an embodiment of this application;

[0050] FIG. 7 is another schematic diagram of resource allocation for grantless transfer resources in accordance with an embodiment of this application;

[0051] FIG. 8 is another schematic diagram of resource allocation for grantless transfer resources in accordance with an embodiment of this application;

[0052] FIG. 9 is a schematic diagram of resource allocation of mini-slots included in a slot according to an embodiment of this application;

[0053] FIG. 10 is another schematic diagram of resource allocation of mini-slots included in a slot according to an embodiment of this application;

[0054] FIG. 11 is another schematic diagram of resource allocation of mini-slots included in a slot according to an embodiment of this application;

[0055] FIG. 12 is another schematic diagram of resource allocation of mini-slots included in a slot according to an embodiment of this application;

[0056] FIG. 13 is another schematic diagram of resource allocation of mini-slots included in a slot according to an embodiment of this application;

[0057] FIG. 14 is a schematic diagram of resource allocation of mini-slots included in a radio frame according to an embodiment of this application;

[0058] FIG. 15 is another schematic diagram of resource allocation of mini-slots included in a radio frame according to an embodiment of this application;

[0059] FIG. 16 is a schematic diagram of resource allocation of OFDM symbols included in a radio frame according to an embodiment of this application;

[0060] FIG. 17 is another schematic diagram of resource allocation of OFDM symbols included in a radio frame according to an embodiment of this application;

[0061] FIG. 18 is a schematic diagram of resource allocation for grantless transmission resources carrying data packets, according to an embodiment of this application;

[0062] FIG. 19 is another schematic diagram of resource allocation for grantless transmission resources carrying data packets, according to an embodiment of this application;

[0063] FIG. 20 is another schematic diagram of resource allocation for grantless transmission resources carrying data packets, according to an embodiment of this application;

[0064] FIG. 21 is another schematic diagram of resource allocation of OFDM symbols included in a radio frame, according to an embodiment of this application;

[0065] FIG. 22 is a schematic block diagram of a communication apparatus according to an embodiment of this application; and

[0066] FIG. 23 is a schematic block diagram of a communication device according to an embodiment of this application.

Description of Embodiments

[0067] The following describes the technical solutions in this application with reference to the accompanying drawings.

[0068] The technical solutions in the embodiments of this application can be applied to various wireless communication systems, for example, a future 5th generation system (5th Generation, 5G) or a new radio communication system (New Radio, NR).

[0069] The terminal device in the embodiments of this application is a device with a wireless receiving and sending function. The device may be deployed on the ground, such as an indoor device or an outdoor device, a handheld device, a wearable device, or a vehicle-mounted device; can be deployed on the water (for example, on a ship); or may be deployed in the air (for example, by airborne aircraft, hot air balloon, or satellite). The terminal device can be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless receiving and sending function, a virtual reality terminal device (Virtual Reality, VR), an augmented reality terminal device (Augmented Reality, AR), a wireless terminal in industrial control, self-driving wireless terminal, remote medical wireless terminal, smart grid wireless terminal, transportation safety wireless terminal, smart grid wireless terminal smart city, smart home wireless terminal, cellular phone, cordless phone, Session Initiation Protocol (SIP) phone, Wireless Local Loop (WLL), personal digital assistant ( Personal Digital Assistant, PDA), portable device with wireless communication device, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network, a terminal device in a future Public Land Mobile Network (PLMN) or the like. similar. The application scenario is not limited in the embodiments of this application. A terminal device may sometimes be referred to as a user equipment (user equipment, UE), an access terminal device, a UE, a UE, a mobile station, a mobile console, a remote station, a remote terminal device, a mobile device, a UE terminal device, a terminal, a wireless communication device, a UE agent, a UE device, and the like.

[0070] The network device in the embodiments of this application may be a device that is configured to communicate with a terminal device. A network device can be any device with a wireless receiving and sending function, including but not limited to a base station (e.g., NodeB NodeB, eNodeB evolved NodeB, 5th generation, 5G base station communication system), base station, or network device. in a future communication system, an access node in a Wi-Fi system, a wireless relay node or a wireless data transmission node) and the like. The network device may alternatively be a radio controller in a cloud radio access network (CRAN) scenario. The network device may alternatively be a network device in a 5G network, a network device in a future advanced network, a wearable device, a vehicle-mounted device, or the like. The network device may alternatively be a small cell, a transmission receiving point (transmission receiving point, TRP), or the like. Of course, this application is not limited to this.

[0071] For ease of understanding of this application, several elements introduced in the descriptions of this application are first described here.

[0072] FIG. 1 is a schematic diagram of a wireless communication system according to an embodiment of this application. As shown in FIG. 1, communication system 100 includes a network device 102, and network device 102 may include one or more antennas, such as antennas 104, 106, 108, 110, 112, and 114. In addition, network device 102 may further include yourself a transmitter circuit and a receiver circuit. One skilled in the art can understand that both the transmitter circuit and the receiver circuit may include a variety of components that are associated with signal sending and receiving (such as a processor, modulator, multiplexer, demodulator, demultiplexer, or antenna).

[0073] Network device 102 may communicate with multiple terminal devices (such as terminal device 116 and terminal device 122). However, it should be understood that network device 102 may communicate with any number of terminal devices similar to terminal device 116 or terminal device 122. Each of terminal device 116 and terminal device 122 may be any of the terminal devices described above.

[0074] As shown in FIG. 1, terminal device 116 communicates with antenna 112 and antenna 114. Antenna 112 and antenna 114 send information to terminal device 116 on a forward link (also referred to as downlink) 118 and receive information from terminal device 116 on a reverse link (also referred to as uplink) 120. In addition, terminal device 122 communicates with antenna 104 and antenna 106. Antenna 104 and antenna 106 send information to terminal device 122 on forward link 124 and receive information from terminal device 122 on reverse link 126.

[0075] In addition, the communication system 100 may be a PLMN network, a D2D network, an M2M network, or another network. Fig. 1 is merely an exemplary simplified circuit diagram. The network may further include another network device that is not shown in FIG. one.

[0076] FIG. 2 is a schematic flow diagram of a method 200 for determining a time domain resource used for grantless transmission, according to an embodiment of this application. The terminal device in Fig. 2 may be one of terminal device 116 and terminal device 122 in FIG. 1 and the network device in FIG. 2 may be the network device 102 in FIG. 1. Of course, in the actual system, the number of network devices and the number of terminal devices cannot be limited to an example in this embodiment or another embodiment. Details are not described below. Method 200 includes at least the following steps.

[0077] Step 201: The terminal device obtains the first time domain period and the second time domain period for grantless transmission resources, where the size of the first time domain period is P1 time units, the size of the second time domain period is. The time units are P2, and P1 is greater than or equal to P2.

[0078] Specifically, when allocating grantless transmission resources to a terminal device, a network device may configure grantless transmission resources for the terminal device based on two periods (eg, a first time domain period and a second time domain period). The first time domain period includes P1 time units, the second time domain period includes P2 time units, and P1 is greater than or equal to P2. In this application, one grantless resource may also be referred to as one grantless opportunity, which is a time-frequency resource used for one transmission of one data block, eg, one transport block (TB).

[0079] For example, a network device configures a first type grantless transmission resource for a terminal device based on a first time domain period, and configures a second type grantless transmission resource for a terminal device based on a second time domain period. As shown in FIG. 3, in the grantless resource configured by the network device for the terminal device, the first type grantless resource reappears with the first time domain period P1, and the second type grantless resource reappears with the second time domain period P2. The first the grantless transmission resource appearing in the first time domain period P1 is a first type grantless transmission resource, and the grantless transmission resource configured based on the second time domain period P2 after the first grantless transmission resource in the first time domain period P1 is a second type grantless transmission resource.

[0080] Optionally, a first type grantless resource in the first time domain period is used for initial transmission of the data packet of the terminal device, and a second type grantless transmission resource in the first time domain period is used for non-initial transmission of the data packet. Therefore, the first time domain period may also be referred to as a grantless transmission resource period used for initial transmission, and the second time domain period may also be referred to as a grantless transmission resource period used for non-initial transmission.

[0081] When the terminal device determines the grantless resources allocated by the network device to the terminal device, the terminal device first needs to obtain parameter information associated with the grantless resources, for example, to obtain the first time domain period P1 and the second time domain period P2 of the grantless resources, and determining, based on the parameter information related to the grantless transmission resources, the grantless resources allocated by the network device to the terminal device.

[0082] Optionally, in addition to including the first time domain period P1 and the second time domain period P2, the parameter information may include at least the maximum number N times of retransmissions and the number T of time units included in any grantless transmission resource in the first time period. The maximum number of retransmission times N is the maximum number of times the same uplink data is sent to the network device before receiving feedback information sent by the network device, where N≥1. In retransmission, the same redundancy version of the same uplink data or different redundancy versions of the same data may be transmitted at different transmission times.

[0083] It should be noted that the maximum number of retransmission times N is the maximum number of times of retransmissions including the initial transmission of uplink data.

[0084] Optionally, any unit of time included in any grantless transmission resource in the first time domain period and the second time domain period can be any of an Orthogonal Frequency Division Multiplexing (OFDM) symbol, mini-slot ( mini-slot ), slot and subframe.

[0085] Optionally, the parameter information may be reported by the network device to the terminal device in any of the following ways. The parameter information may be communicated by the network device to the terminal device by sending any one type of higher layer signaling (eg, Radio Resource Control (RRC) signaling) or L1/L2 signaling (eg, downlink control information) (Downlink Control Information, DCI) or Media Access Control Control Element (MAC CE)). Alternatively, the parameter information may be pre-negotiated between the network device and the terminal device, for example, the parameter information is specified in a standard. Alternatively, the parameter information may be a default value. This is not particularly limited in this embodiment of this application.

[0086] Step 202. The terminal device obtains the number k of grantless transmission resources in the first time domain period, which are configured based on the first time domain period P ₁ and the second time domain period P ₂ .

[0087] Specifically, in step 201, the terminal device determines the first time domain period P1 and the second time domain period P2 for grantless transmission resources; and at step 202, the terminal device needs to further determine the amount of grantless transmission resources included in the first time domain period.

[0088] In this embodiment, the grantless transmission resources included in the first time domain period are a grantless transmission resource configured based on the first time period P1 area, and a grantless transmission resource configured based on the second time domain period P2. The k grantless resources include one grantless resource configured based on the first time domain period and (k-1) grantless resources configured based on the second time domain period.

[0089] Step 203. Based on the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period, the terminal device determines a time unit index in which a grantless transmission resource used for grantless transmission is located.

[0090] Specifically, in step 202, the terminal device determines the number k of grantless transmission resources included in the first time domain period; and in step 203, the terminal device determines, based on the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period, the time unit index in which the grantless transmission resource used for grantless transmission is located.

[0091] Therefore, in this embodiment of this application, the number k of grantless transmission resources in the first time domain period is determined, and the terminal device determines, based on the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period area, the index of the unit of time in which the grantless transfer resource used for grantless transfer is located. Thus, the grantless transmission resources configured for the terminal device in two adjacent first time domain periods do not overlap.

[0092] The following describes in detail a method for determining the number k of grantless transmission resources included in the first time domain period by the terminal device.

[0093] By way of example, and not limitation, that any grantless transmission resource in the first time domain period includes one unit of time is used as an example to describe a method for determining the number k of grantless transmission resources included in the first time period.

[0094] Method 1

[0095] The terminal device determines the number k of the grantless transmission resources in the first time domain period based on the first time domain period P1 and the second time domain period P2.

[0096] Specifically, the terminal device determines the number k of grantless transmission resources in the first time domain period according to the following relation expression:

(1), где

(1), where

ceil means round up.

[0097] For example, if the number of time units included in the first time domain period P1 is 5, and the number of time units included in the second time domain period is 2, the number k of grantless transmission resources in the first time domain period determined according to the expression relation (1) is as follows:

k=ceil (5/2) = 3.

[0098] In other words, it is determined that the number of grantless transmission resources in the first time domain period is 3, and a schematic representation of the allocation of grantless transmission resources is shown in FIG. four.

[0099] Method 2:

[0100] The terminal device determines the number k of grantless transmission resources in the first time domain period based on the first time domain period P1, the second time domain period P2, and the number T of time units included in any grantless transmission resource in the first time domain period.

[0101] Specifically, the terminal device determines the number k of grantless transmission resources in the first time domain period according to the following relation expression:

(2), где

(2), where

floor means round down.

[0102] For example, if the number of time units included in the first time domain period P1 is 8 and the number of time units included in the second time domain period is 3, the number k of grantless transmission resources in the first time domain period determined according to the expression relation (2) is as follows:

k=floor [(8-1)/3]+1=3.

[0103] In other words, it is determined that the number of grantless transmission resources in the first time domain period is 3, and a schematic representation of the distribution of grantless transmission resources is shown in FIG. 5.

[0104] Method 3:

[0105] The terminal device determines the number k of grantless transmission resources in the first time domain period based on the first time domain period, the second time domain period, and the maximum number N times of retransmissions.

[0106] Specifically, the terminal device determines the number k of grantless transmission resources in the first time domain period according to the following relation expression:

(3), где

(3), where

the min function means to return the minimum value of the given parameter [ceil (P1/P2), N].

[0107] For example, if the number of time units included in the first time domain period P1 is 8, the number of time units included in the second time domain period is 2, and the maximum number N times of retransmissions is 4, the number k of grantless transmission resources in the first period of the time domain, determined according to the relationship expression (3), is as follows:

k=min [ceil (8/2), N] = 4.

[0108] In other words, it is determined that the number of grantless transmission resources in the first time domain period is 4, and a schematic representation of the allocation of grantless transmission resources is shown in FIG. 6.

[0109] Method 4:

[0110] The terminal device determines the number k of grantless transmission resources in the first time domain period based on the first time domain period, the second time domain period, the number T of time units included in any grantless transmission resource in the first time domain period, and the maximum number N times retransmissions.

[0111] Specifically, the terminal device determines the number k of the grantless transmission resources in the first time domain period according to the following relation expression:

(4).

(four).

[0112] For example, if the number of time units included in the first time domain period P1 is 10, the number of time units included in the second time domain period is 2, and the maximum number N times of retransmissions is 4, the number k of grantless transmission resources in the first period of the time domain, determined according to the relationship expression (4), is as follows:

k=min [floor [(10-1) / 2] + 1, N] = 4.

[0113] In other words, it is determined that the number of grantless transmission resources in the first time domain period is 4, and a schematic representation of the allocation of grantless transmission resources is shown in FIG. 7.

[0114] For method 3 and method 4, N in relation expression (3) and relation expression (4) can be replaced with another parameter. For example, N in relation expression (3) and relation expression (4) can be replaced with L, where L is used to indicate that (L-1) second type grantless transmission resources are configured after the first type grantless transmission resource in the first time period. areas.

[0115] The replacement form of relation expression (3) is shown in relation expression (5):

(5).

(5).

[0116] The replacement form of relation expression (4) is shown in relation expression (6):

(6).

(6).

[0117] Optionally, the L parameter may be reported by the network device to the terminal device in any of the following ways. The L parameter may be communicated by the network device to the terminal device by sending any one type of higher layer signaling (eg, RRC signaling), L1/L2 signaling (eg, DCI), or MAC CE. Alternatively, the L parameter may be pre-negotiated between the network device and the terminal device. Alternatively, the L parameter may be a default value. This is not particularly limited in this embodiment of this application.

[0118] Method 5:

[0119] The terminal device determines, based on the second time domain period, the number k of grantless transmission resources allocated by the network device to the terminal device.

[0120] Specifically, after the first type grantless transmission resource in the current first time domain period, the terminal apparatus determines the number of second type grantless transmission resources based on the second time domain period P2; and when the determined second type grantless transmission resource is located in the first time domain period following the current first time domain period, ignores or discards the determined second type grantless transmission resource located in the first time domain period following the first time domain period following the current the first time period.

[0121] For example, as shown in FIG. 8, if the number of time units included in the first time domain period P1 is 8 and the number of time units included in the second time domain period is 3, the terminal device determines, based on the size of the second time domain period, that one first time domain period may include only two second type grantless transmission resources, and the terminal device ignores or discards the second type grantless transmission resource located in the first time domain period following the current first time domain period. Grantless transfer resources of the second type, which are ignored or discarded by the terminal device, are shown in FIG. eight.

[0122] It should be noted that the relationship expressions listed in the previous methods are merely exemplary descriptions and do not constitute any limitation in this embodiment of this application.

[0123] By way of example, and not limitation, that any grantless transmission resource in the first time domain period includes one time unit, and the time unit is a mini-slot, is used as an example to describe the method to determine the number k of the grantless transmission resources included in the first time domain period.

[0124] It should be noted that when any unit of time included in any grantless transfer resource in the first time domain period is a mini-slot, in addition to obtaining the above parameter information, the terminal device further needs to determine the mini-slot format information . The mini-slot format information includes at least the number of orthogonal frequency division multiplexing OFDM symbols included in each mini-slot and the location of the start OFDM symbol of each mini-slot in each slot, or includes the location of the start symbol OFDM of each mini-slot in each slot, and the location of the end OFDM symbol of each mini-slot in each slot.

[0125] The following describes several methods for the terminal device to determine the mini-slot format information, and to determine, based on the mini-slot format information, the number k of grantless transmission resources included in the first time domain period by the terminal device.

[0126] Method 1

[0127] The network device predetermines a plurality of mini-slot formats, and delivers to the terminal device a mini-slot format number corresponding to the mini-slot, so that the terminal device determines the mini-slot format.

[0128] Each mini-slot format represents a mini-slot allocation state in the slot. The allocation status may be the number of orthogonal frequency division multiplex OFDM symbols included in each mini-slot and the location of the start OFDM symbol of each mini-slot in each slot, or may be the location of the start OFDM symbol of each mini-slot in each slot and the location of the end OFDM symbol of each mini-slot. OFDM symbol of each mini-slot in each slot.

[0129] Format 1

[0130] As shown in Table 1, the mini-slot format information includes at least the following information: an index of an OFDM start symbol of each mini-slot, and a number of symbols occupied by each mini-slot.

Table 1

Mini slot format number OFDM Start Symbol Index Number of symbols occupied by each mini slot B: I1, I2 _,… and IX n1, n2,… and nX

[0131] The first column in Table 1 represents the mini-slot format number. When the network device notifies the terminal device of a specific mini-slot format, the network device only needs to deliver the format number to the terminal device. The second column in Table 1 indicates that one slot includes X mini-slots (X is a positive integer greater than 1), and indicates that the index of the start OFDM symbol of the i-th mini-slot in the slot is Ii (0≤Ii≤13 and 1≤i≤X). The third column in Table 1 represents the number of OFDM symbols occupied by each mini-slot, where ni₍0≤ni≤_fourteenand 1≤i≤X) represents the number of OFDM symbols occupied by the i-th mini-slot^,whose initial OFDM symbol has index Ii.

[0132] For example, when the format number of mini-slot B in Table 1 is 2, the corresponding mini-slot format is shown in Table 2, and the corresponding mini-slot allocation schematic diagram in one slot is shown in FIG. 9.

table 2

Mini slot format number OFDM Start Symbol Index Number of symbols occupied by each mini slot 2 2, 4, 7 and 10. 2, 3, 3 and 2.

[0133] Format 2

[0134] As shown in Table 3, the mini-slot format information includes at least the following information: an index of an OFDM start symbol of each mini-slot, and a number of symbols occupied by each mini-slot.

Table 3

Mini slot format number OFDM Start Symbol Index Number of symbols occupied by each mini slot B: I1, I2,… and IX N.

[0135] The first column in Table 3 represents the mini-slot format number. When the network device notifies the terminal device of a specific mini-slot format, the network device only needs to deliver the format number to the terminal device. The second column in Table 3 indicates that one slot includes X (X is a positive integer greater than 1) mini-slots, and indicates that the index of the starting OFDM symbol of the i-th mini-slot in the slot is Ii (0≤ Ii ≤13 and 1≤i≤X). The third column in Table 3 indicates that the number of symbols occupied by each mini-slot, namely the number of OFDM symbols occupied by each of the X mini-slots, is n.

[0136] For example, when the mini-slot format number B in Table 3 is 2, the corresponding mini-slot format is shown in Table 4, and the corresponding mini-slot allocation schematic diagram in one slot is shown in FIG. ten.

Table 4

Mini slot format number OFDM Start Symbol Index Number of symbols occupied by each mini slot 2 2, 6 and 10 2

[0137] Format 3

[0138] As shown in Table 5, the mini-slot format information includes at least the following information: an index of the start OFDM symbol of each mini-slot and an index of the end OFDM symbol of each mini-slot.

Table 5

Mini slot format number OFDM Start Symbol Index OFDM End Symbol Index B: I1, _{I2, ...,} and _IX E1, _{E2, ...,} and _EX

[0139] The first column in Table 5 represents the mini-slot format number. When the network device notifies the terminal device of the specific mini-slot format, the network device only needs to deliver the format number to the terminal device. The second column in Table 5 indicates that one slot includes X (X is a positive integer more than 1) mini-slots, and indicates that the start OFDM symbol index i^-wow mini slot in slot is Ii (0≤I_i≤13 and 1≤i≤X). The third column in Table 5 is the index of the end OFDM symbol of each mini-slot, where E_i (0≤E_i≤14, and 1≤i≤X) is the index of the ending OFDM symbol i^-wow mini slots, whose the initial OFDM symbol has an index Ii.

[0140] For example, when the mini-slot format number B in Table 5 is 2, the corresponding mini-slot format is shown in Table 6, and the corresponding mini-slot allocation pattern in one slot is shown in FIG. eleven.

Table 6

Mini slot format number OFDM Start Symbol Index OFDM End Symbol Index 2 2, 6, and 10 4, 8 and 12

[0141] Format 4

[0142] As shown in Table 7, the mini-slot format information includes at least the following information: the initial mini-slot OFDM symbol index, the number of occupied symbols, and the period with which the mini-slot reappears in one slot or the spacing between two adjacent slots.

Table 7

Mini slot format number Initial mini-slot OFDM symbol index Number of symbols occupied by the mini-slot Mini-slot period or interval B: Isymbol nsymbol psymbol

[0143] The first column in Table 7 represents the mini-slot format number. When the network device notifies the terminal device of the specific mini-slot format, the network device only needs to deliver the format number to the terminal device. The second column in Table 7 indicates that the index of the initial mini-slot OFDM symbol in the slot is I_symbols (0≤I_symbols≤13). The third column in table 7 indicates that the number of symbols occupied by the mini-slot is nsymbol (0≤n_symbols≤14). Fourth the column in Table 7 represents the period with which a mini-slot reappears in one slot or the interval between two adjacent mini-slots.

[0144] For example, when the mini-slot format number B in Table 7 is 2, and the fourth column in Table 7 represents the period with which the mini-slot reappears in one slot, the corresponding mini-slot format is shown in Table 8, and the corresponding the mini-slot allocation scheme in one slot is shown in FIG. 12.

Table 8

Mini slot format number Initial mini-slot OFDM symbol index Number of symbols occupied by the mini-slot mini slot period 2 2 2 four

[0145] For another example, when the mini-slot format number B in Table 7 is 2, and the fourth column in Table 7 represents the interval between two adjacent mini-slots in one slot, the corresponding mini-slot format is shown in Table 9, and the corresponding the mini-slot allocation scheme in one slot is shown in FIG. 13.

Table 9

Mini slot format number Initial mini-slot OFDM symbol index Number of symbols occupied by the mini-slot Interval between two adjacent mini-slots 2 2 2 2

[0146] In method 1, the mini-slot format may be specified in the standard. The network device determines the mini-slot format and delivers the mini-slot format number to the terminal device, so that the terminal device determines the mini-slot format based on the number. This embodiment of this application is not limited thereto.

[0147] For example, alternatively, the network device may directly configure the format of the mini-slot in the slot and send specific configured format information (e.g., the format information described in the above table) of the mini-slot to the terminal device using any of the following types of signaling : higher layer signaling (eg RRC signaling), L1/L2 signaling (eg DCI) or MAC MAC.

[0148] Alternatively, the mini-slot format in the slot may be pre-negotiated between the network device and the terminal device (i.e., the format is negotiated in a standard followed by the network device and the terminal device), or the format is a default format.

[0149] After the terminal device determines the mini-slot format information that is configured by the network device for the terminal device, the terminal device may further determine the number k of grantless transmission resources included in the first time domain period.

[0150] Specifically, the network device notifies the terminal device of the first time domain period, the second time domain period, and the mini-slot format number. For example, if the network device notifies the terminal device that the first time domain period includes seven mini-slots and the second time domain period includes two mini-slots, and notifies the terminal device that the mini-slot format is such that each mini-slot occupies two OFDM symbols, the terminal device determines according to relation expression (1) that the number k of grantless transmission resources included in the first time domain period is as follows:

k=ceil (7/2) = 4.

[0151] It should be noted that if the network device does not specify the size of the first time domain period for the terminal device when the terminal device determines the number of grantless transmission resources, the size of the first time domain period by default is the number of mini-slots included in one slot.

[0152] Method 2

[0153] The network device delivers the mini-slot format information using the grant-free time domain resource allocation parameter, and the mini-slot format information is used to indicate the selected or specific mini-slot format.

[0154] Optionally, the mini-slot format information includes at least the number of orthogonal frequency division multiplex OFDM symbols included in each mini-slot and the location of each mini-slot start OFDM symbol in each slot, or includes in the location of the start OFDM symbol of each mini-slot in each slot and the location of the end OFDM symbol of each mini-slot in each slot.

[0155] Specifically, the network device delivers the time domain resource offset parameter, and the time domain resource offset parameter is used to indicate the index of the time unit (eg, slot) in which the configured initial grantless resource is located, or is used to indicate the index of the time unit for initialization grantless transfer resource.

[0156] For example, the terminal device considers that, starting from the slot location indicated by the time domain resource offset parameter, grantless resources are configured in all slots following said slot, and grantless resources are configured in all minislots in the slot indicated mini-slot format information.

[0157] In another example, the network device delivers a time domain period of the grantless resource, wherein the time domain period is the period with which the slot in which the grantless resource is reconfigured reappears in the time domain, and the terminal device considers that, starting from slot location specified by the time domain resource offset parameter, the grantless resource is configured only in the slot that appears with the period specified by the time domain period of the grantless resource, and the grantless resources are configured in all mini-slots in the slot specified by the mini format information. slot.

[0158] It should be noted that the mini-slot format number or all of the parameters may be reported by the network device to the terminal device in any of the following ways. The mini-slot format number or all of the parameters may be communicated by the network device to the terminal device by sending any one type of higher layer signaling (eg, RRC signaling), L1/L2 signaling (eg, DCI), or MAC CE. Alternatively, the mini-slot format number or all of the parameters may be pre-negotiated between the network device and the terminal device. It is not specifically limited in this embodiment of this application.

[0159] In step 202, the terminal device determines the number k of grantless transmission resources in the first time domain period. In order to perform an uplink transmission using a grantless transmission resource that is allocated by a network device to a terminal device, the terminal device further needs to determine the time unit index in which the grantless transmission resource is located.

[0160] The following describes a method for determining a time unit index by a terminal device in which a grantless transmission resource configured by a network device for the terminal device is located.

[0161] Optionally, the terminal device determines, based on the time unit index in which the first grantless transmission resource is located, the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period, the time unit index, in which the grantless transfer resource is located.

[0162] It should be noted that when any grantless transmission resource in the first time domain period includes a plurality of time units, the index of the time unit in which the grantless transmission resource is located is the index of the original time unit in the plurality of time units included in the grantless resource. transmission.

[0163] For example, when any grantless transmission resource in the first time domain period includes a plurality of OFDM symbols, the time unit index in which the grantless transmission resource is located is the index of the original OFDM symbol in the OFDM symbol set.

[0164] It should also be noted that the index of the time unit in which the first grantless transfer resource is located is used to initialize the grantless transfer resources, and the index is referred to as Starting_index. The time unit index in which the first grantless transfer resource is located may be reported by the network device to the terminal device by at least any of the following methods. The time unit index in which the first grantless resource is located may be signaled by the network device to the terminal device by sending any type of higher layer signaling (eg, RRC signaling), L1/L2 signaling (eg, DCI), or MAC CE. Alternatively, the index of the time unit in which the first grantless transfer resource is located may be pre-negotiated between the network device and the terminal device, for example, the index is specified in the standard. Alternatively, the index of the time unit in which the first grantless transfer resource is located may be a default value. This is not specifically limited in this embodiment of this application.

[0165] By way of example, and not limitation, the terminal device determines the time unit index in which the grantless transfer resource Y is located according to any of the following relationship expressions:

TU_index = Starting_index + floor(Y/k) * P ₁ + (Y mod k) * P ₂ (7);

TU_index = [Starting_index + floor(Y/k) * P ₁ + (Y mod k) * P ₂ ] mod X (8);

TU_index = Starting_index + floor(Y/k) * P ₁ + (Y mod k) * P ₂ + F ₂ (9);

and

TU_index = [Starting_index + floor(Y/k) * P ₁ + (Y mod k) * P ₂ + F ₂ ] mod X (10),

where:

F2 presents is a correction parameter, and the value of F2 is associated with Y value;

Y is a non-negative integer and is used to designate a grantless transfer resource sequence;

X is the default non-negative integer;

Starting_index represents the index of the time unit in which the first grantless transfer resource is located; and

TU_index is the index of the time unit in which any grantless transfer resource is located, including the first grantless transfer resource.

[0166] By way of example, and not limitation, the terminal device may further determine, in accordance with any of the following relationship expressions, the time unit index in which the grantless transmission resource is located (D*k+e), where D is a sequence number of the first time domain period, k is the number of grantless transmission resources included in each first time domain period, e is a non-negative integer, and 0≤e≤(k−1). For any value of D, the value of e goes from 0 to (k − 1).

TU_index = Starting_index + D * P ₁ + e * P ₂ (11);

TU_index = [Starting_index + D * P ₁ + e * P ₂ ] mod X(12);

TU_index = Starting_index + D * P ₁ + e * P ₂ + F ₂ (13);

and

TU_index = [Starting_index + D * P ₁ + e * P ₂ + F ₂ ] mod X(14),

where:

F2 presents correction parameter, and the value of F2 is related to the value (D * k+e);

X is a preset non-negative integer;

Starting_index represents the index of the time unit in which the first grantless transfer resource is located; and

TU_index represents the index of the time unit in which any grantless transfer resource is located, including the first grantless transfer resource.

[0167] It should be noted that TU_index calculated in accordance with the relationship expressions (7) - (14) is the global time unit index. In this application, both the local time unit index and the global time unit index may indicate the location of the time unit, and each of the local index and the global index may be referred to as a time unit index.

[0168] When the time unit is specifically an OFDM symbol, the global OFDM symbol index is determined based on the frame number of the radio frame in which the OFDM symbol is located, the index in the radio frame of the subframe in which the OFDM symbol is located, the index, in the subframe, of the slot in which the symbol is located OFDM, an index of an OFDM symbol in a slot, the number of subframes included in one radio frame, the number of slots included in one subframe, and the number of symbols included in one slot. The local OFDM symbol index is represented jointly by the frame number of the radio frame in which the OFDM symbol is located, the index in the frame of the subframe in which the OFDM symbol is located, the index in the subframe of the slot in which the OFDM symbol is located, and the index of the OFDM symbol in the slot.

[0169] When the time unit is specifically a slot (slot), the global slot index is determined based on the frame number of the radio frame in which the slot is located, the index in the radio frame of the subframe in which the slot is located, the slot index in the subframe, the number of subframes included in one radio frame , and the number of slots included in one subframe. The local slot index is represented jointly by the frame number of the radio frame in which the slot is located, the index in the frame of the subframe in which the slot is located, and the index of the slot in the subframe.

[0170] When the unit of time is specifically a mini-slot (mini-slot), the global index of the mini-slot is determined based on the frame number of the radio frame in which the mini-slot is located, the index, in the radio frame, of the subframe in which the mini-slot is located, an index, in a subframe, a slot in which a mini-slot is located, a mini-slot index in a slot, a number of subframes included in one radio frame, a number of slots included in one subframe, and a number of mini-slots included in one slot. The local mini-slot index is represented together by the frame number of the radio frame in which the mini-slot is located, the index, in the radio frame, of the subframe in which the mini-slot is located, the index, in the subframe, of the slot in which the mini-slot is located, and the index of the mini-slot. slot within a slot.

[0171] In a communication system, when there are three levels of time domain resources: radio frame, interval, and symbol, the local time unit index and the global time unit index may alternatively be as follows:

[0172] When the time unit is specifically an OFDM symbol, the global OFDM symbol index is determined based on the frame number of the radio frame in which the OFDM symbol is located, the index, in the radio frame, of the slot in which the OFDM symbol is located, the index of the OFDM symbol in the slot, the number of slots, included in one radio frame, and the number of symbols included in one interval. The local OFDM symbol index is represented jointly by the frame number of the radio frame in which the OFDM symbol is located, the index, in the radio frame, of the slot in which the OFDM symbol is located, and the index of the OFDM symbol in the slot.

[0173] When the time unit is specifically a slot (slot), the global slot index is determined based on the frame number of the radio frame in which the slot is located, the slot index in the radio frame, and the number of slots included in one radio frame. The local slot index is represented jointly by the frame number of the radio frame in which the slot is located and the slot index in the radio frame.

[0174] When the time unit is specifically a mini-slot (mini-slot), the global index of the mini-slot is determined based on the frame number of the radio frame in which the mini-slot is located, the index in the radio frame, the slot in which the mini-slot is located, the index mini-slots in a slot, the number of slots included in one radio frame, and the number of mini-slots included in one slot. The local mini-slot index is represented jointly by the frame number of the radio frame in which the mini-slot is located, the index, in the radio frame, of the slot in which the mini-slot is located, and the index of the mini-slot in the slot.

[0175] The following describes a method for determining a local index corresponding to Starting_index and TU_index with respect to various types of time units. It is assumed that each radio frame (Radio Frame) includes subframes M_subframe (subframe), each subframe includes slots M_slot (slot), each slot includes mini-slots M_mini-slot (mini-slot), and each slot includes into OFDM symbols M_symbol (symbol). The subframe_index indexes of M_subframe subframes in one frame are 0, 1, ... and M_subframe − 1; the slot_index indexes of M_slot slots in one subframe are 0, 1, ... and M_slot − 1; mini-slot_index indexes of mini-slots M_mini-slot in one slot are 0, 1, ... and M_mini-slot-1; and the symbol_index indices of the M_symbol symbols in one slot are 0, 1, ... and M_symbol-1.

[0176] M_subframe, M_slot, M_mini-slot, and M_symbol may be communicated by the network device to the terminal device in any of the following ways. M_subframe, M_slot, M_mini-slot, and M_symbol may be signaled by a network device to a terminal device by sending any one type of higher layer signaling (eg, RRC signaling), L1/L2 signaling (eg, DCI), or MAC CE. Alternatively, M_subframe, M_slot, M_mini-slot, and M_symbol may be pre-negotiated between the network device and the terminal device. Alternatively, M_subframe, M_slot, M_mini-slot, and M_symbol may be the default values. This is not specifically limited in this embodiment of this application.

[0177] By way of example, and not limitation, when any grantless transmission resource in the first time domain period includes one or more time units, and the time unit is a slot, TU_index may be further expressed as:

TU_index=SFN * M_subframe * M_slot+subframe_index * M_slot+slot_index (15), where

SFN represents the system frame number of the radio frame in which the slot with index slot_index is located, and subframe_index represents the subframe index in which the slot with index slot_index is located.

[0178] Starting_index can be further expressed as:

Starting_index=SFN_Starting * M_subframe * M_slot+subframe_index_Starting * M_slot+slot_index_Starting (16), where

slot_index_Starting represents the index of the slot in which the first grantless resource is located, subframe_index_Starting represents the index of the subframe in which the slot with index slot_index_Starting is located, and SFN_Starting represents the system frame number of the radio frame in which the slot with index slot_index_Starting is located.

[0179] By way of example, and not limitation, when any grantless transmission resource in the first time domain period includes one or more time units, and the time unit is a mini-slot, TU_index may be further expressed as:

TU_index=SFN * M_subframe * M_slot * M_mini-slot+subframe_index * M_slot * M_mini-slot+slot_index * M_mini-slot+mini-slot_index (17), where

SFN represents the system frame number of the radio frame in which the mini-slot with index mini-slot_index is located, subframe_index represents the subframe index in which the mini-slot with index mini-slot_index is located, and slot_index represents the index of the slot in which the mini-slot with index is located mini-slot_index.

[0180] Starting_index can be further expressed as:

Starting_index = SFN_Starting * M_subframe * M_slot * M_mini-slot + subframe_index_Starting * M_slot * M_mini-slot + slot_index_Starting * M_ mini-slot + mini-slot_index_Starting (18), where

mini-slot_index_Starting represents the index of the mini-slot where the first grantless transfer is located, slot_index_Starting represents the index of the slot where the mini-slot with index mini-slot_index_Starting is located, subframe_index_Starting represents the index of the subframe where the mini-slot with index mini-slot_index_Starting is located, and SFN_Starting represents the system frame number of the radio frame in which the mini-slot index mini-slot_index_Starting is located.

[0181] By way of example, and not limitation, when any grantless transmission resource in the first time domain period includes one or more time units, and the time unit is an OFDM symbol, TU_index may be further expressed as:

TU_index = SFN * M_subframe * M_slot * M_symbol + subframe_index * M_slot * M_symbol + slot_index * M_symbol + symbol_index (19), where

SFN represents the system frame number of the radio frame in which the OFDM symbol with symbol_index is located, subframe_index represents the subframe index in which the OFDM symbol with symbol_index is located, and slot_index represents the slot index in which the OFDM symbol with symbol_index is located.

[0182] Starting_index can be further expressed as:

Starting_index = SFN_Starting * M_subframe * M_slot * M_symbol + subframe_index_Starting * M_slot * M _symbol + slot_index_Starting * M _symbol + symbol_index_Starting (20), where

symbol_index_Starting represents the index of the OFDM symbol in which the first grantless transmission opportunity is located, slot_index_Starting represents the index of the slot in which the OFDM symbol with index symbol_index_Starting is located, subframe_index_Starting represents the subframe index in which the OFDM symbol with index symbol_index_Starting is located, and SFN_Starting represents the system frame number of the radio frame, in which the OFDM symbol with index symbol_index_Starting is located.

[0183] In another embodiment, a method for determining a local index corresponding to Starting_index and TU_index is described in relation to various types of time units. In this embodiment, it is assumed that each radio frame (Radio Frame) includes M_slot slots (slot), each slot includes mini-slots M_mini-slot (mini-slot), and each slot includes OFDM symbols M_symbol (symbol ). The slot_indexes of said M_slots in one radio frame are 0, 1, ... and M_slot-1; mini-slot_index indexes of mini-slots of M_mini-slots in one slot are 0, 1, ... and M_mini-slot-1; and the symbol_index indices of the M_symbol symbols in one slot are 0, 1, ... and M_symbol-1.

[0184] M_slot, M_mini-slot, and M_symbol may be communicated by the network device to the terminal device in any of the following ways. M_slot, M_mini-slot, and M_symbol may be signaled by a network device to a terminal device by sending any one type of higher layer signaling (eg, RRC signaling), L1/L2 signaling (eg, DCI), or MAC CE. Alternatively, M_slot, M_mini-slot, and M_symbol may be pre-negotiated between the network device and the terminal device. Alternatively, M_slot, M_mini-slot M_symbol may be the default values. This is not specifically limited in this embodiment of this application.

[0185] By way of example, and not limitation, when any grantless transmission resource in the first time domain period includes one or more time units, and the time unit is a slot, TU_index may be determined based on the slot index, and for example, may be additionally expressed as:

TU_index=SFN * M_slot+slot_index (15a), where

The SFN represents the system frame number of the radio frame in which the slot with index slot_index is located.

[0186] Starting_index is determined based on the index, in the radio frame, of the slot in which the first grantless transmission resource is located, and, for example, may be further expressed as:

Starting_index=SFN_Starting * M_slot+slot_index_Starting (16a), where

slot_index_Starting represents the index, in the radio frame, of the slot in which the first grantless transmission resource is located, SFN_Starting represents the system frame number of the radio frame in which the slot with index slot_index_Starting is located, and slot_index_Starting and SFN_Starting are determined based on the time domain resource offset parameter.

[0187] By way of example, and not limitation, when any grantless transmission resource in the first time domain period includes one or more time units, and the time unit is a mini-slot, the TU_index may be determined based on the mini-slot index, and , for example, can be further expressed as:

TU_index = SFN * M_slot * M_mini-slot + slot_index * M_mini-slot + mini-slot_index (17a), where

SFN represents the system frame number of the radio frame in which the mini-slot with index mini-slot_index is located, and slot_index represents the index of the slot in which the mini-slot with index mini-slot_index is located.

[0188] Starting_index may be determined based on the index, in slot, of the mini-slot in which the first grantless transfer resource is located, and, for example, may be further expressed as:

Starting_index=SFN_Starting * M_slot * M_mini-slot+slot_index_Starting * M_ mini-slot+mini-slot_index_Starting (18a), where

mini-slot_index_Starting represents the index, in slot, of the mini-slot in which the first grantless transmission resource is located slot_index_Starting represents the index, in the radio frame, of the slot in which the mini-slot with index mini-slot_index_Starting is located SFN_Starting represents the system frame number of the radio frame, in where the mini-slot index mini-slot_index_Starting is located, slot_index_Starting and SFN_Starting are determined based on the time domain resource offset parameter, and mini-slot_index_Starting is determined based on the time domain resource allocation parameter.

[0189] By way of example, and not limitation, when any grantless transmission resource in the first time domain period includes one or more time units, and the time unit is an OFDM symbol, TU_index may be determined based on the symbol index, and, for example, can be further expressed as:

TU_index=SFN * M_slot * M_symbol+slot_index * M_symbol+symbol_index (19a), where

SFN represents the system frame number of the radio frame in which the OFDM symbol with index symbol_index is located, and slot_index represents the index of the slot in which the OFDM symbol with index symbol_index is located.

[0190] Starting_index may be determined based on an index, in a slot, of the OFDM symbol in which the first grantless transmission opportunity is located, and, for example, may be further expressed as:

Starting_index=SFN_Starting * M_slot * M_symbol+slot_index_Starting * M _symbol+symbol_index_Starting (20a), where

symbol_index_Starting represents the index, in slot, of the OFDM symbol in which the first grantless transmission opportunity is located slot_index_Starting represents the index, in the radio frame, of the slot in which the OFDM symbol with index symbol_index_Starting is located SFN_Starting represents the system frame number of the radio frame in which the OFDM symbol with index is located symbol_index_Starting, slot_index_Starting, and SFN_Starting are determined based on the time domain resource offset parameter, and symbol_index_Starting is determined based on the time domain resource allocation parameter.

[0191] Optionally, in the radio frame or subframe, the index of the slot in which the first grantless transmission opportunity (or the first grantless resource) is located may be determined or obtained based on the time domain resource offset parameter. In other words, the time domain resource offset parameter is used to indicate the index, in a radio frame or subframe, of the slot in which the first grantless transmission opportunity is located. The index, in slot, of the mini-slot in which the first grantless transfer opportunity is located may be determined or obtained based on the time domain resource allocation parameter. In other words, the time domain resource allocation parameter is used to indicate the index, in slot, of the mini-slot in which the first grantless transfer opportunity is located. The index, in the slot, of the OFDM symbol in which the first grantless transmission opportunity is located may be determined or obtained based on the time domain resource allocation parameter. In other words, the time domain resource allocation parameter is used to indicate an index in the OFDM symbol slot in which the first grantless transmission opportunity is located.

[0192] In an embodiment, both the time domain resource offset parameter and the time domain resource allocation parameter may be reported by the network device to the terminal device in any of the following ways. The time domain resource offset parameter and the time domain resource allocation parameter may be communicated by a network device to a terminal device by sending any one type of higher layer signaling (eg, RRC signaling), L1/L2 signaling (eg, DCI), or a media access control element ( Medium Access Control Control Element, MAC CE)). Alternatively, the time domain resource offset parameter and the time domain resource allocation parameter may be pre-negotiated between the network device and the terminal device, for example, the time domain resource offset parameter and the time domain resource allocation parameter are specified in the standard. Alternatively, the time domain resource offset parameter and the time domain resource allocation parameter may be default values. This is not specifically limited in this embodiment of this application.

[0193] In an embodiment, the time domain resource offset parameter, the time domain resource allocation parameter, and the time domain period of the grantless transmission resource may be reported by the network device to the terminal device using one part of the signaling. For example, three parameters are carried in RRC signaling. Alternatively, the three parameters may be communicated by the network device to the terminal device using different parts of the signaling. For example, the time domain period of the grantless transmission resource is reported to the terminal device using RRC signaling, and the time domain resource offset parameter and the time domain resource allocation parameter are reported to the terminal device using DCI. It is not specifically limited in this application.

[0194] The local index of the time unit in which any grantless transfer resource is located can be determined in accordance with any one of the relation expressions (7)-(14) and any one of the relation expressions (15), (17), (19 ), (15a), (17a), and (19a). Alternatively, it can be understood that, for a time unit determined based on the local index, whether the time unit is the time unit in which the grantless transmission resource is located is thus determined.

[0195] The following uses an example in which any time unit included in any grantless transmission resource in the first time domain period is a mini-slot to describe a method for determining by the terminal device the time unit index in which the grantless transmission resource that is configured is located. network device for the terminal device.

[0196] The terminal device determines, based on the time unit index in which the first grantless transmission resource is located, the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period, the time unit index in which the grantless resource is located. transmission.

[0197] Specifically, for example, based on the parameter information delivered by the network device, the terminal device determines that one slot includes M_mini-slot=7 mini-slots, and that any grantless resource occupies one mini-slot (i.e., T =1); determines that each mini-slot occupies two OFDM symbols; determines that the radio frame in which the first grantless resource is located includes M_subframe=10 subframes, that the subframe in which the first grantless resource is located includes M_slot=2 slots, that the first time domain period includes seven mini -slots, and that the second time domain period includes two mini-slots; and further determines that the system frame number of the radio frame in which the first grantless resource is located is SFN_starting, that the index of the subframe in which the first grantless resource is located is 0, that is, subframe_index_starting=0, that the index of the slot in which the first grantless resource is located the grantless resource is 0, that is, slot_index_Starting=0, and that the mini-slot index in which the first grantless resource is located is 0, that is, mini-slot_index_Starting=0.

[0198] The number k of the grantless transmission resources included in the first time domain period, which is determined by the terminal device according to the relation expression (1), is as follows:

k=ceil (7/2) = 4.

[0199] The terminal device determines, according to relation expression (18), that the global index Starting_index of the mini-slot in which the first grantless resource transfer resource is located in the grantless transfer resources is (140 * SFN_starting + 14 * 0 + 7 * 0 + 0 ).

[0200] It should be noted that if the network device has not reported the value of the first time domain period to the terminal device, the terminal device determines that the value of the first time domain period is the number M_mini-slot of mini-slots included in one interval, that is, determines that the value of the first period of the time domain is 7.

[0201] Thus, the terminal device has determined the global index Starting_index of the mini-slot in which the first grantless transmission resource is located in the grantless transmission resources, and determined that one first time domain period includes four mini-slots in which the grantless resources are configured. transmission. The terminal device determines, in accordance with any of relation expressions (7)-(10) or any of relation expressions (11)-(14), relation expressions (17) and relation expressions (18): an index in the radio frame with the system frame number SFN_starting the mini-slot in which the grantless transmission resource is located in the radio frame. The resource allocation state for the grantless transmission resources in the radio frame that is finally determined by the terminal device is shown in FIG. fourteen.

[0202] In another example, based on the parameter information delivered by the network device, the terminal device determines that one slot includes M_mini-slot=7 mini-slots; determines that each mini-slot occupies two OFDM symbols; determines that the radio frame in which the first grantless resource is located includes M_subframe=10 subframes, that the subframe in which the first grantless resource is located includes M_slot=2 slots, that the first time domain period includes seven mini -slots, and that the second time domain period includes two mini-slots; and further determines that the system frame number of the radio frame in which the first grantless resource is located is SFN_starting, that the index of the subframe in which the first grantless resource is located is 0, that is, subframe_index_starting=0, that the index of the slot in which the first grantless resource is located the grantless resource is 0, that is, slot_index_Starting=0, and that the mini-slot index in which the first grantless resource is located is 2, that is, mini-slot_index_Starting=2.

[0203] The number k of the grantless transmission resources included in the first time domain period, which is determined by the terminal device according to the relation expression (1), is as follows:

k=ceil (7−2) / 2=3.

[0204] The terminal device determines, according to relation expression (18), that the global index Starting_index of the mini-slot in which the first grantless resource transfer resource is located in the grantless transfer resources is (140 * SFN_starting + 14 * 0 + 7 * 0 + 2 ).

[0205] It should be noted that if the network device has not reported the value of the first time domain period to the terminal device, the terminal device determines that the value of the first time domain period is the number M_mini-slot of mini-slots included in one slot, that is, determines that the value of the first period of the time domain is 7.

[0206] Thus, the terminal device has determined the global index Starting_index of the mini-slot in which the first grantless transmission resource is located in the grantless transmission resources, and determined that one first time domain period includes three mini-slots in which the grantless resources are configured. transmission. The terminal device determines, according to any of the relation expressions (7) to (10) or any of the relation expressions (11) to (14), relation expression (17) and relation expression (18), an index, in the radio frame with the system frame number SFN_starting, the mini-slot in which the grantless transmission resource is located in the radio frame. The allocation state of the grantless transmission resources in the radio frame, which are finally determined by the terminal device, is shown in FIG. fifteen.

[0207] The following is an example in which any time unit included in any grantless transmission resource in the first time domain period is an OFDM symbol, to describe a method for determining, by a terminal device, a time unit index in which a grantless transmission resource configured by a network is located. device for a terminal device.

[0208] The terminal device determines, based on the time unit index in which the first grantless transmission resource is located, the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period, the time unit index in which the grantless transfer resource.

[0209] Specifically, for example, based on the parameter information provided by the network device, the terminal device determines that one slot includes M_symbol = 14 OFDM symbols, and that any grantless transmission resource occupies two OFDM symbols (i.e., T = 2) ; determines that the radio frame in which the first grantless resource is located includes M_subframe 10 subframes, that the subframe in which the first grantless resource is located includes M_slot = 2 slots, that the first time domain period includes 14 OFDM symbols , and that the second time domain period includes four OFDM symbols; and further determines that the system frame number of the radio frame in which the first grantless resource is located is SFN_starting, that the index of the subframe in which the first grantless resource is located is 0, i. subframe_index_Starting=0 that the index of the slot in which the first grantless transfer resource is located is 0, i.e. slot_index_Starting = 0, and that the index of the OFDM symbol in which the first grantless transmission resource is located is 0, that is, symbol_index_Starting = 0.

[0210] The number k of the grantless transmission resources included in the first time domain period, which is determined by the terminal device in accordance with the ratio expression (1), is as follows:

k = ceil(14/4) = 4 .

[0211] The terminal device determines, according to relation expression (20), that the global Starting_index of the OFDM symbol in which the first grantless resource is located in the grantless resources is (280 * SFN_starting + 28 * 0 +14 * 0 + 0) .

[0212] Note that, if the network device has not reported the value of the first time domain period to the terminal device, the terminal device determines that the value of the first time domain period is the number of M_symbol OFDM symbols included in one slot, that is, determines that the value of the first period time domain is 14.

[0213] That is, the terminal device has determined the global Starting_index of the OFDM symbol in which the first grantless resource is located in the grantless resources, and has determined that the first time domain period includes four grantless resources, and each grantless resource includes in itself two OFDM symbols. The terminal device determines, in accordance with any of the relation expressions (7) - (10) or any of the relation expressions (11) - (14), relation expressions (19) and relation expressions (20): index, in a radio frame with a system frame number SFN_starting, OFDM symbol, in which the grantless transmission resource is located in the radio frame. The allocation state of the grantless transmission resources in the radio frame, which are finally determined by the terminal device, is shown in FIG. 16.

[0214] In another example, based on the parameter information delivered by the network device, the terminal device determines that one slot includes M_symbol =14 OFDM symbols and that any grantless resource occupies two OFDM symbols (ie, T=2 ); determines that the radio frame in which the first grantless resource is located includes M_subframe=10 subframes, that the subframe in which the first grantless resource is located includes M_slot=2 slots, that the first time domain period includes 14 symbols OFDM, and that the second time domain period includes four OFDM symbols; and further determines that the system frame number of the radio frame in which the first grantless resource is located is SFN_starting, that the index of the subframe in which the first grantless resource is located is 0, that is, subframe_index_starting=0, that the index of the slot in which the first grantless resource is located the grantless resource is 0, that is, slot_index_Starting=0, and that the index of the OFDM symbol in which the first grantless resource is located is 2, that is, symbol_index_starting=2.

[0215] The number k of the grantless transmission resources included in the first time domain period, which is determined by the terminal device according to the relation expression (1), is as follows:

k=ceil (14−2) / 4=3.

[0216] The terminal device determines, according to relation expression (20), that the global Starting_index of the OFDM symbol in which the first grantless resource is located in the grantless resources is (280 * SFN_starting + 28 * 0 +14 * 0 + 2) .

[0217] It should be noted that if the network device has not reported the value of the first time domain period to the terminal device, the terminal device determines that the value of the first time domain period is the number of M_symbol OFDM symbols included in one slot, that is, determines that the value of the first period time domain is 14.

[0218] Thus, the terminal device has determined the global index Starting_index of the OFDM symbol in which the first grantless resource is located in the grantless resources, and determined that one first time domain period includes three grantless resources, and each grantless resource includes includes two OFDM symbols. The terminal device determines, according to any of relation expressions (7)-(10) or any of relation expressions (11)-(14), relation expressions (19) and relation expressions (20): an index in the radio frame with the system frame number SFN_starting of the OFDM symbol in which the grantless transmission resource is located in the radio frame. The allocation state of the grantless transmission resources in the radio frame, which are finally determined by the terminal device, is shown in FIG. 17. Optionally, method 200 may further include the following steps.

[0219] Step 204: The terminal device sends uplink data to the network device on the determined grantless resource.

[0220] Specifically, in step 203, the terminal device determines the time unit index in which the grantless resource is located in the first time domain period, and in step 204, the terminal device may send uplink data to the network device on the determined grantless resource.

[0221] When uplink data is sent to a network device, an initial transmission of N repetitions of a data packet may be sent to the network device on a first type grantless transmission resource, and a non-initial repetition of N repetitions of a data packet may be sent to a second type grantless transmission resource.

[0222] When a first type grantless resource is used to initially retry N retries of sending a data packet, and a grantless resource of the second type is used to non-initial retry N retries of sending a data packet, the terminal device sends, in the following several implementations, a data packet using the resource grantless transmission, which is allocated by the network device to the terminal device.

[0223] Method 1

[0224] When the number k of the grantless transmission resources in the first time domain period is less than the maximum number N of repetitions, for example, k=3 and N=4, when the terminal device sends uplink data to the network device, the terminal device may realize four times retransmitting data packet 1 by occupying three grantless transmission resources in the current first time domain period and a first grantless transmission resource in the next first time domain period. Accordingly, the terminal device realizes four times retransmission of the data packet 2 in the same manner. A schematic block diagram of sending a data packet is shown in FIG. eighteen.

[0225] Method 2

[0226] When the number k of the grantless transmission resources in the first time domain period is equal to the maximum number N of repetitions, for example, k=4 and N=4, when the terminal device sends uplink data to the network device, the terminal device can realize four times retransmission data packet 1, occupying four grantless transmission resources in the current first time domain period. Accordingly, the terminal device realizes four times retransmission of the data packet 2 in the same manner. A schematic block diagram of sending a data packet is shown in FIG. 19.

[0227] Method 3

[0228] When the number k of the grantless transmission resources in the first time domain period is greater than the maximum number of repetitions N, for example, k=4 and N=3, when the terminal device sends uplink data to the network device, the terminal device may realize three times retransmission of data packet 1, occupying the first three grantless grant transmission resources in the current first time domain period. Accordingly, the terminal apparatus realizes three times the retransmission of the data packet 2 in the same manner. A schematic block diagram of sending a data packet is shown in FIG. twenty.

[0229] Optionally, the network device can determine, using at least the following method, whether the terminal device uses the first type of grantless transmission resource to initially send the data packet.

[0230] Specifically, the network device determines, based on the data packet transmission delay requirement, whether the terminal device uses the first type grantless transmission resource to initially send the data packet. For example, when the transmission delay requirement of a data packet is higher than a preset transmission delay threshold, the network device determines that the terminal device uses a first type grantless transmission resource to initially send the data packet.

[0231] Optionally, after the network device determines that the terminal device uses a first type grantless transfer resource to initially send a data packet, the network device may instruct, using but not limited to any of the following methods, the terminal device to use the resource grantless transfer of the first type for the initial sending of the data packet.

[0232] Method 1:

[0233] The network device explicitly sends the indication information to the terminal device, and the indication information is used to instruct the terminal device to use the first type grantless transmission resource to initially send the data packet.

[0234] By way of example, and not limitation, a network device may send pointing information to a terminal device using higher layer signaling (eg, RRC signaling), L1/L2 signaling (eg, DCI), or MAC CE.

[0235] Method 2

[0236] The network device implicitly instructs the terminal device to use the first type of grantless transmission resource to initially send the data packet.

[0237] Specifically, the terminal device may determine, based on the first time domain period configured by the network device, whether to use the first type of grantless transmission resource to initially send the data packet. For example, when the first time domain period is smaller than the predetermined period threshold, the terminal apparatus determines to use the first type of grantless transmission resource to initially send a data packet.

[0238] Alternatively, the terminal device may determine, based on the ratio of values between the number k of grantless transmission resources in the first time domain period and the maximum number N of retransmissions configured by the network device, whether to use the first type grantless transmission resource to initially send the data packet. For example, when the number k of the grantless transmission resources in the first time domain period is greater than or equal to the maximum number N of retransmissions, the terminal device determines to use the first type of grantless transmission resource to initially send a data packet.

[0239] Step 205: The network device obtains the number k of grantless transmission resources in the first grantless resource time domain period.

[0240] Step 206. The network device determines, based on the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period, the time unit index in which the grantless transmission resource used to receive grantless data is located, where the size is of the first time domain period is equal to P1 time units, the size of the second time domain period is equal to P2 time units, and P1 greater than or equal to P2.

[0241] Step 207: The network device receives, on a certain grantless transmission resource, uplink data sent by the terminal device.

[0242] Specifically, when the network device receives uplink data that is sent by the terminal device to the grantless resource, the network device also must first determine the time unit index in which the grantless resource is located, and receives on the grantless resource indicated by the determined index units of time, uplink data that is sent by the terminal device.

[0243] For a method for a network device to determine the time unit index in which a grantless transmission resource is located, refer to the associated descriptions in relation to the terminal device. For brevity, the details are not repeated here.

[0244] This application provides a method for determining the index of a unit of time in which a grantless transmission resource Y is located relative to grantless transmission resources configured on a single period basis. The method is briefly described below.

[0245] Optionally, the terminal device determines, based on the time unit index in which the first grantless transmission resource is located and the time domain period P, the time unit index in which the grantless transmission resource is located.

[0246] Specifically, the terminal device determines the time unit index in which the grantless transmission resource Y is located according to any of the following relationship expressions:

TU_index = Starting_index + Y * P(21);

TU_index = [Starting_index + Y*P] mod X(22);

TU_index = Starting_index + Y * P + F ₂ (23);

TU_index = [Starting_index + Y * P + F ₂ ] mod X(24);

[TU_index -Starting_index] mod P = Y(25); and

[TU_index - Starting_index - F2] mod P = Y (26),

where:

F2 presents correction parameter, and F2 value is related with Y value;

Y is a non-negative integer and is used to indicate the ordinal number of the grantless transfer resource;

X is a preset non-negative integer;

Starting_index represents the index of the time unit in which the first grantless transfer resource is located; and

TU_index represents the index of the time unit in which any grantless transfer resource is located, including the first grantless transfer resource.

[0247] By way of example, and not limitation, when any grantless transmission resource in a time domain period includes one time unit, and the time unit is a slot, TU_index is expressed as a ratio expression (15), for example, and Starting_index is expressed, for example , as an expression of relation(16).

[0248] By way of example, and not limitation, when any grantless transmission resource in a time domain period includes one time unit, and the time unit is a mini-slot, TU_index is expressed, for example, as ratio expression (17) and Starting_index is expressed , for example, as an expression of relation (18).

[0249] By way of example, and not limitation, when any grantless transmission resource in a time domain period includes one or more time units, and the time unit is an OFDM symbol, TU_index is expressed as ratio expression (19), for example, and Starting_index is expressed, for example, as an expression of relation (20).

[0250] By way of example, and not limitation, when any grantless transmission resource in a time domain period includes one or more time units, and the time unit is a slot, TU_index is expressed as a relation expression (15a), for example, and Starting_index may be is determined based on the offset parameter of the time domain resource and expressed, for example, as a ratio expression (16a).

[0251] By way of example, and not limitation, when any grantless transmission resource in a time domain period includes one or more time units, and the time unit is a mini-slot, TU_index is expressed, for example, as ratio expression (17a), and Starting_index may be determined based on the time domain resource offset parameter and the time domain resource allocation parameter, and is expressed as a relational expression (18a), for example. The index, in the radio frame, of the slot in which the first grantless transmission opportunity is located is determined based on the time domain resource offset parameter. The index, in slot, of the mini-slot in which the first grantless transfer opportunity is located is determined based on the time domain resource allocation parameter.

[0252] By way of example, and not limitation, when any grantless transmission resource in a time domain period includes one or more time units, and the time unit is an OFDM symbol, TU_index is expressed as ratio expression (19a), for example, and Starting_index may be determined based on the time domain resource offset parameter and the time domain resource allocation parameter, and expressed as a relational expression (20a), for example. The index, in the radio frame, of the slot in which the first grantless transmission opportunity is located is determined based on the time domain resource offset parameter. The index, in the slot, of the OFDM symbol in which the first grantless transmission opportunity is located is determined based on the time domain resource allocation parameter.

[0253] For a specific implementation method for determining, by a terminal device, the time unit index in which the grantless transfer resource that is configured by the network device for the terminal device is located, refer to the preceding related descriptions. For brevity, the details are not repeated here.

[0254] It should be noted that in this embodiment of this application, for the unit of time specified by the terminal device in which the grantless resource Y is located, when the time unit in which the grantless transmission resource is located is an unavailable unit of time (for example, the time unit is a unit of time used for downlink transmission, or the time unit is another time unit used for uplink grantless transmission), the terminal device may ignore or discard the grantless transmission resource located in the time unit (or starting from the time unit). Alternatively, the terminal device may re-determine, in the following method, the time unit in which the grantless transmission resource is located.

[0255] Specifically, the uplink symbol allocation state that can be used for grantless transmission in a slot (time unit example) in which grantless transmission resource Y is located is shown in FIG. 21. For example, in a slot, symbol 3 to symbol 8 may be used for grantless uplink data transmission, and other symbols may not be used for grantless uplink data transmission.

[0256] The Starting_index of the OFDM symbol in which the first grantless transmission resource is located is 3, and hence the initial (i.e., Y=0) grantless transmission opportunity occurs for symbol 3 and symbol 4 (e.g., one grantless transmission resource occupies two character). The time domain period P is assumed to be seven symbols, and is determined according to any of the relation expressions (7) to (10) or any of the relation expressions (11) to (14), the relation expression (19) and the relation expression ( 20) that grantless opportunity 1 (ie, Y=1) occurs for symbol 10 and symbol 11. However, symbol 10 and symbol 11 cannot be used for grantless uplink data transmission. In this case, the value of F2 in relation expression (9) or (10), it is −3. Therefore, when F2 = -3, it is determined according to relation expression (9) or (10) that a grantless transmission opportunity 1 occurs for symbol 7 and symbol 8.

[0257] It should be noted that the value of F2 is associated with any of the following: a Y value and/or a frame structure and/or a time unit index in which the first grantless transfer resource is located and/or the number of time units included in one grantless transfer resource.

[0258] It should also be noted that the value of F2 may be configured by a network device for a terminal device or may be specified in a standard. This is not specifically limited in this embodiment of this application.

[0259] Optionally, for the time unit determined by the terminal device in which the grantless transmission resource Y is located, when the time unit in which the grantless transmission resource is located is an unavailable time unit (for example, the time unit is the time unit used for transmission over downlink, or time unit is another unit of time used for uplink grantless transmission) if the terminal device ignores or discards the grantless resource and the terminal device should have sent n^th (1<n≤N) repetition of the data burst for the grantless resource, the terminal device may choose to reject for n^-wowpacket retries and use the next grantless resource to send the maximum of the remaining (N-n) data packet retries, or the terminal device may use the next grantless resource to send (N−n+1) data packet retries. Terminal device failure from n^-wow repetition can be configured by the base station. For example, the base station notifies, by delivering an instruction, the terminal device whether to discard, if a grantless transmission resource Y is available, from the nth repetitions. Alternatively, the terminal device may independently determine whether to discard the nth repetition^.For example, when the service has high latency requirements, the terminal device forgoes the nth repetition and uses the next grantless transmission resource to send the maximum remaining (N-n) retries, or if the terminal device does not make that nth retries drop, the terminal device uses the next grantless resource to send (N-n+1) repetitions of the data packet. In another example, when a service needs high reliability, the terminal device uses the next grantless resource to send the remaining (N-n+1) retries; otherwise, the terminal device discards the nth repetition and uses the next grantless transmission resource to send the maximum remaining (N-n) repetitions.

[0260] The above describes with reference to FIG. 2 in FIG. 21, methods for determining a time domain resource used for grantless transmission are provided in the embodiments of this application. Next will be described with reference to FIG. 22 and FIG. 23, the communication equipment and communication device provided in the embodiments of this application.

[0261] FIG. 22 is a schematic block diagram of a communication apparatus 300 in accordance with an embodiment of this application. The communications apparatus 300 includes a processing module 310 and a transceiver module 320.

[0262] In an optional implementation, communications equipment 300 is a terminal device.

[0263] The processing unit 310 is configured to obtain a first time domain period and a second time domain period of grantless transmission resources. The size of the first period of the time domain is units of time P1, the size of the second period of the time domain is the units of time P2 and P1 is larger or equal to P2.

[0264] The processing unit 310 is further configured to obtain the number k of grantless transmission resources in the first time domain period.

[0265] The processing unit 310 is further configured to determine, based on the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period, a time unit index in which the grantless transmission resource used for grantless transmission is located.

[0266] Optionally, the processing unit 310 is further configured to determine, based on the index of the time unit in which the first grantless transmission resource is located, the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period, the index the unit of time in which the grantless transfer resource is located.

[0267] Optionally, the processing module 310 is further configured to determine, according to any of the above relationship expressions (7) - (10), a grantless transfer resource index Y. In another embodiment, the processing module 310 is further configured to determine, in accordance with any of the above relationship expressions (11)-(14), a grantless transfer resource index (D*k+e).

[0268] Optionally, the processing module 310 is further configured to determine, according to any of the above relationship expressions (21) - (24), the time unit index in which the grantless transfer resource Y is located.

[0269] Optionally, the number k of grantless transmission resources in the first time domain period is determined based on the first time domain period and the second time domain period.

[0270] Optionally, the processing unit 310 is further configured to determine, according to any of the above relationship expressions (1) to (6), the number k of grantless transmission resources in the first time domain period.

[0271] Optionally, the processing module 310 is further configured to obtain mini-slot format information when the time unit is specifically a mini-slot. The mini-slot format information includes at least the number of orthogonal frequency division multiplexing OFDM symbols included in each mini-slot and the location of the start OFDM symbol of each mini-slot in each slot, or includes the location of the start symbol OFDM of each mini-slot in each slot, and the location of the end OFDM symbol of each mini-slot in each slot. The number k of the grantless transmission resources in the first time domain period is determined based on the first time domain period, the second time domain period, and the mini-slot format information.

[0272] Optionally, the time unit includes at least one of the following time units: radio frame, subframe, slot, or OFDM symbol.

[0273] Optionally, the transceiver module 320 is configured to send uplink data on a specific grantless transmission resource.

[0274] In another optional embodiment, the communication apparatus 300 is a network device.

[0275] The processing unit 310 is configured to obtain the number k of grantless transmission resources in the first time domain period of the grantless transmission resource.

[0276] The processing unit 310 is further configured to determine, based on the first time domain period, the second time domain period of the grantless transmission resource, and the number k of grantless transmission resources in the first time domain period, an index of a unit of time in which the grantless transmission resource used for receiving free data. The size of the first period of the time domain is units of time P1, the size of the second period of the time domain is the units of time P2 and P1 is larger or equal to P2.

[0277] Optionally, the processing unit 310 is further configured to determine, based on the index of the time unit in which the first grantless transmission resource is located, the first time domain period, the second time domain period, and the value k of the grantless transmission resources in the first time domain period, the index the unit of time in which the grantless transmission resource used to receive the grantless data is located.

[0278] Optionally, the processing module 310 is further configured to determine, according to any of the above relationship expressions (7) - (10), the time unit index in which the grantless transfer resource Y is located. In another embodiment, the processing module 310 is further configured to determine, in accordance with any of the above relationship expressions (11) - (14), a grantless transfer resource index (D*k+e).

[0279] Optionally, the processing module 310 is further configured to determine, in accordance with any of the above relationship expressions (21) to (24), the time unit index in which the grantless transfer resource Y is located.

[0280] Optionally, the number k of grantless transmission resources in the first time domain period is determined based on the first time domain period and the second time domain period.

[0281] Optionally, the processing module 310 is further configured to determine, in accordance with any of the above relationship expressions (1) to (6), the number k of grantless transmission resources in the first time domain period.

[0282] Optionally, the processing module 310 is further configured to determine mini-slot format information when the time block is specifically a mini-slot. The mini-slot format information includes at least the number of orthogonal frequency division multiplexing OFDM symbols included in each mini-slot and the location of the start OFDM symbol of each slot in each slot. The number k of the grantless transmission resources in the first time domain period is determined based on the first time domain period, the second time domain period, and the mini-slot format information.

[0283] Optionally, the time unit includes at least any of the following time units: radio frame, subframe, slot, or OFDM symbol.

[0284] Optionally, the transceiver module 320 is configured to receive, on a certain grantless transmission resource, uplink data sent by the terminal device.

[0285] It should be understood that the processing module 310 in this embodiment of the present invention may be implemented by a processor or a circuit component associated with the processor, and the transceiver module 320 may be implemented by a transceiver or a circuit component associated with the transceiver.

[0286] As shown in FIG. 23, an embodiment of this application further provides a communication device 400. The communication device 400 includes a processor 410, a memory 420, and a transceiver 430. The processor 410 may be implemented with software such as an instruction or program, hardware, or a combination of software and hardware.

[0287] In a further implementation, communication device 400 is a terminal device, memory 420 stores an instruction or program, and processor 430 is configured to execute an instruction or program stored in memory 420. When executing an instruction or program stored in memory 420, processor 410 is configured to perform the operation performed by the terminal device processing unit 310 in the above embodiment, and the transceiver 430 is configured to perform the operation performed by the terminal device transceiver unit 320 in the above embodiment.

[0288] In another optional implementation, communication device 400 is a network device, memory 420 stores an instruction or program, and processor 430 is configured to execute an instruction or program stored in memory 420. When executing an instruction or program stored in memory 420, processor 410 configured to perform the operation performed by the network device processing unit 310 in the above embodiment, and the transceiver 430 is configured to perform the operation performed by the network device transceiver unit 320 in the above embodiment.

[0289] In another optional implementation, all or some of the functions of the communications apparatus 300 or communications device 400 may be implemented using System on Chip (SoC) technology, such as with a chip. The chip is integrated with the core, I/O interface, etc. The input/output interface may realize the function of a transceiver module, for example, performing operations of sending uplink data to a network device on a certain grantless transmission resource and receiving, on a certain grantless transmission resource, uplink data sent by the terminal device. The core may implement a processing function, for example, performing the operation of obtaining the first time domain period and the second time domain period of the grantless transmission resources, where the size of the first time domain period is equal to units of time P1_,the size of the second period of the time domain is equal to the units of time P2, and P1 is greater than or equal to P2 or performing the operation obtaining the number k of grantless transmission resources in the first time domain period, or performing an operation of determining, based on the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period, the index of the time unit in which the grantless transmission resource is located The used for grantless transfer. The core and I/O interface functions may be implemented in hardware, or may be implemented in appropriate software executed in hardware. The hardware or software includes one or more modules corresponding to a function. It should be understood that the processor referred to in the embodiments of the present invention may be a Central Processing Unit (CPU) or may be other general purpose processor, Digital Signal Processor (DSP), Application Specified Integrated Circuit (Application Specified Integrated Circuit, ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistorized logic device, discrete hardware component, or the like. A general purpose processor may be a microprocessor, or the processor may be any conventional processor or the like.

[0290] In addition, it should be understood that the memory mentioned in the embodiments of the present invention may be volatile memory or non-volatile memory, or may include both volatile memory and non-volatile memory. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM), or flash -memory. Volatile memory can be random access memory (RAM) and used as an external cache. By way of example, and not limitation, many forms of RAM can be used, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), dynamic random access memory with channel synchronization (Synchlink DRAM, SLDRAM) and Direct Rambus Random Access Memory (Direct Rambus RAM, DR RAM).

[0291] It should be noted that when the processor is a general purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, the memory (storage module) is integrated into the processor.

[0292] It should be noted that the memory described in this specification is intended to include, but is not limited to, these types of memory and any other suitable types of memory.

[0293] The present invention further provides the following embodiments. It should be noted that the serial numbers of the following embodiments do not have to correspond to the serial numbers of the above embodiments.

[0294] Embodiment 1: A method for determining a time domain resource used for grantless transmission is provided, including:

receiving by the terminal device of the first time domain period and the second time domain period of grantless transmission resources, where the size of the first time domain period is equal to units of time P1, the size of the second time domain period is Time units P2, and P1 is greater than or equal to P2;

receiving, by the terminal device, a number k of grantless transmission resources in the first time domain period; and

determining by the terminal device, based on the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period, a time unit index in which the grantless transmission resource used for grantless transmission is located.

[0295] Embodiment 2: According to the method described in Embodiment 1, determining by the terminal device, based on the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period, the time unit index in which the resource is located grantless transfer used for grantless transfer includes:

determining by the terminal device, based on the time unit index in which the first grantless transmission resource is located, the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period, the index of the time unit in which the grantless transmission resource is located, used for grantless transfer.

[0296] Embodiment 3: According to the method described in Embodiment 2, determining, based on the time unit index in which the first grantless transmission resource is located, the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first period of the time domain, the index of the time unit in which the grantless transmission resource used for grantless transmission is located, includes:

determining, by the terminal device, the index of the time unit in which the grantless transfer resource Y is located, according to any of the following relational expressions:

TU_index = Starting_index + floor(Y/k) * P ₁ + (Y mod k) * P ₂ ;

TU_index = [Starting_index + floor(Y/k) * P ₁ + (Y mod k) * P ₂ ] mod X;

TU_index = Starting_index + floor(Y/k) * P ₁ + (Y mod k) * P ₂ + F ₂ ; or

TU_index = [Starting_index + floor(Y/k) * P ₁ + (Y mod k) * P ₂ + F ₂ ] mod X,

where:

F2 presents correction parameter, and F2 value is related with Y value;

Y is a non-negative integer and is used to indicate the ordinal number of the grantless transfer resource;

X is a preset non-negative integer;

Starting_index represents the index of the time unit in which the first grantless transfer resource is located; and

TU_index represents the index of the time unit in which any grantless transfer resource is located, including the first grantless transfer resource.

[0297] Embodiment 4: According to the method described in any of Embodiment 1 to Embodiment 3, the number k of grantless transmission resources in the first time domain period is determined based on the first time domain period and the second time domain period.

[0298] Embodiment 5: According to the method described in Embodiment 4, determining the number k of grantless transmission resources in the first time domain period based on the first time domain period and the second time domain period includes:

determination by the terminal device of the number k of the grantless transmission resources in the first time domain period according to the following relational expression:

.

.

[0299] Embodiment 6: According to the method described in Embodiment 4, determining by the terminal device the number k of grantless transmission resources in the first time domain period based on the first time domain period and the second time domain period includes:

determination by the terminal device of the number k of the grantless transmission resources in the first time domain period according to the following relational expression:

, где

, where

T represents the number of units of time included in any grantless vesting resource in the first time domain period.

[0300] Embodiment 7: According to the method described in Embodiment 4, determining the number k of grantless transmission resources in the first time domain period by the terminal device based on the first time domain period and the second time domain period includes:

determination by the terminal device of the number k of the grantless transmission resources in the first time domain period according to the following relational expression:

, где

, where

N represents the maximum number of times of retransmissions, where the maximum number of times of retransmissions is the maximum number of times of sending the same uplink data to the network device before receiving feedback information sent by the network device, and N≥1.

[0301] Embodiment 8: According to the method described in Embodiment 4, determining by the terminal apparatus the number k of grantless transmission resources in the first time domain period based on the first time domain period and the second time domain period includes:

determination by the terminal device of the number k of the grantless transmission resources in the first time domain period according to the following relational expression:

, где

, where

T represents the number of time units included in any grantless transmission resource in the first time domain period, N represents the maximum number of retransmission times, with the maximum retransmission times being the maximum number of times to send the same uplink data to the network device up to receiving feedback information sent by the network device, and N≥1.

[0302] Embodiment 9: According to the method described in any of Embodiment 1 to Embodiment 8, when the time unit is specifically a mini-slot, the method further including:

receiving by the terminal device the mini-slot format information, where the mini-slot format information includes at least the number of orthogonal frequency division multiplexing OFDM symbols included in each mini-slot and the location of the start OFDM symbol of each mini-slot in each slot, or includes a start OFDM symbol location and an end OFDM symbol location that are present in each mini-slot in each slot; and accordingly, the number k of the grantless transmission resources in the first time domain period is determined based on the first time domain period, the second time domain period, and the mini-slot format information.

[0303] Embodiment 10: A method for determining a time domain resource used for grantless transmission is provided, including:

obtaining by the network device a number k of grantless transmission resources during the first time domain period of the grantless transmission resource; and

determining by the network device, based on the first time domain period, the second time domain period of the grantless transmission resource, and the number k of grantless transmission resources in the first time domain period, the index of the time unit in which the grantless transmission resource used to receive the grantless data is located, where

the size of the first time domain period is P1 time units, the size of the second time domain period is P2 time units, and P1 is greater than or equal to P2.

[0304] Embodiment 11: According to the method described in Embodiment 10, determining by the network device, based on the first time domain period, the second time domain period for the grantless transmission resource, and the number k of grantless transmission resources in the first time domain period, the time unit index , in which the grantless transmission resource used to receive grantless data is located, includes:

determining by the network device, based on the time unit index in which the first grantless transmission resource is located, the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period, the index of the time unit in which the grantless transmission resource is located, used to receive grantless data.

[0305] Embodiment 12: According to the method described in Embodiment 11, determining by the network device, based on the time unit index in which the first grantless transmission resource is located, the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period, the index of the time unit in which the grantless transmission resource used to receive the grantless data is located includes:

determination by the network device of the time unit index in which the grantless transmission resource Y is located, according to any of the following relational expressions:

TU_index=Starting_index+floor (Y/k) * P1 + (Y mod k) * P2;

TU_index = [Starting_index+floor (Y/k) * P1 + (Y mod k) * P2] mod X_;

TU_index=Starting_index+floor (Y/k) * P1 + (Y mod k) * P2+F2; or

TU_index = [Starting_index+floor (Y/k) * P1 + (Y mod k) * P2+F2] mod x,

where:

F2 presents correction parameter, and F2 value is related with Y value;

Y is a non-negative integer and is used to indicate the ordinal number of the grantless transfer resource;

X is a preset non-negative integer;

Starting_index represents the index of the time unit in which the first grantless transfer resource is located; and

TU_index represents the index of the time unit in which any grantless transfer resource is located, including the first grantless transfer resource.

[0306] Option 13 implementation. A terminal device is provided, including:

a processing module configured to obtain a first time domain period and a second time domain period for grantless transmission resources, where the size of the first time domain period is equal to units of time P1, the size of the second time domain period is equal to units of time P2, and P1 is greater than or equal to P2, and

the processing unit is further configured to obtain a number k of grantless transmission resources in the first time domain period; and

the processing unit is further configured to determine, based on the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period, a time unit index in which a grantless transmission resource used for grantless transmission is located.

[0307] Embodiment 14: According to the terminal device described in Embodiment 13, the processing unit is further configured to:

determine, based on the time unit index in which the first grantless transmission resource is located, the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period, the time unit index in which the grantless transmission resource is located used for grantless transfer.

[0308] Embodiment 15: According to the terminal device described in Embodiment 14, the processing unit is further configured to:

determine the index of the time unit in which the grantless transfer resource Y is located, according to any of the following relational expressions:

TU_index=Starting_index+floor (Y/k) * P1 + (Y mod k) * P2;

TU_index = [Starting_index+floor (Y/k) * P1 + (Y mod k) * P2] mod X;

TU_index=Starting_index+floor (Y/k) * P1 + (Y mod k) * P2+F2; or

TU_index = [Starting_index+floor (Y/k) * P1 + (Y mod k) * P2+F2] mod X,

where:

F2 represents the correction parameter, and the F2 value is associated with the Y value;

Y is a non-negative integer and is used to indicate the ordinal number of the grantless transfer resource;

X is a preset non-negative integer;

Starting_index represents the index of the time unit in which the first grantless transfer resource is located; and

TU_index represents the index of the time unit in which any grantless transfer resource is located, including the first grantless transfer resource.

[0309] Embodiment 16: According to the terminal device described in any of Embodiment 13 to Embodiment 15, the number k of grantless transmission resources in the first time domain period is determined based on the first time domain period and the second time domain period.

[0310] Embodiment 17: According to the terminal device described in Embodiment 16, the processing unit is further configured to:

determine the number k of the grantless transmission resources in the first time domain period according to the following relational expression:

.

.

[0311] Embodiment 18: According to the terminal device described in Embodiment 16, the processing module is further configured to:

determine the number k of the grantless transmission resources in the first time domain period according to the following relational expression:

, где

, where

T represents the number of units of time included in any grantless transmission resource in the first time domain period.

[0312] Embodiment 19: According to the terminal device described in Embodiment 16, the processing unit is further configured to:

determine the number k of the grantless transmission resources in the first time domain period according to the following relational expression:

, где

, where

N represents the maximum number of times of retransmissions, where the maximum number of times of retransmissions is the maximum number of times of sending the same uplink data to the network device before receiving feedback information sent by the network device, and N≥1.

[0313] Embodiment 20: According to the terminal device described in Embodiment 16, the processing unit is further configured to determine the number k of grantless transmission resources in the first time domain period according to the following ratio expression:

, где

, where

T represents the number of units of time included in any grantless transmission resource in the first time domain period, N represents the maximum number of times of retransmission, with the maximum number of times of retransmission being the maximum number of times the same uplink data is sent to the network device before information is received feedback sent by the network device, and N≥1.

[0314] Embodiment 21: According to the terminal device described in any of Embodiment 13 to Embodiment 20, when the unit of time is specifically a mini-slot, the processing unit is further configured to:

obtain mini-slot format information, where the mini-slot format information includes at least the number of orthogonal frequency division multiplexing OFDM symbols included in each mini-slot and the location of the start OFDM symbol of each mini-slot in each slot or includes a start OFDM symbol location and an end OFDM symbol location that are in each mini-slot in each slot.

[0315] Accordingly, the number k of the grantless transmission resources in the first time domain period is determined based on the first time domain period, the second time domain period, and the mini-slot format information.

[0316] Embodiment 22: A network device is provided, including:

a processing module configured to obtain the number k of grantless transmission resources in the first time domain period of the grantless transmission resource, wherein

the processing module is further configured to determine, based on the first time domain period, the second time domain period of the grantless transmission resource, and the number k of grantless transmission resources in the first time domain period, an index of a time unit in which the grantless transmission resource used to receive grantless data is located, and

the size of the first time domain period is P1 time units, the size of the second time domain period is P2 time units, and P1 is greater than or equal to P2.

[0317] Embodiment 23: According to the network device described in Embodiment 22, the processing unit is further configured to:

determine, based on the time unit index in which the first grantless transmission resource is located, the first time domain period, the second time domain period, and the number k of grantless transmission resources in the first time domain period, the time unit index in which the grantless transmission resource is located used for receiving free data.

[0318] Embodiment 24: According to the network device described in Embodiment 23, the processing unit is further configured to:

determine the index of the time unit in which the grantless transfer resource Y is located, according to any of the following relationship expressions:

TU_index=Starting_index+floor (Y/k) * P1 + (Y mod k) * P2;

TU_index = [Starting_index+floor (Y/k) * P1 + (Y mod k) * P2] mod X;

TU_index=Starting_index+floor (Y/k) * P1 + (Y mod k) * P2+F2; or

TU_index = [Starting_index+floor (Y/k) * P1 + (Y mod k) * P2+F2] mod X, Data

where:

F2 represents the correction parameter, and the F2 value is associated with the Y value;

Y is a non-negative integer and is used to indicate the ordinal number of the grantless transfer resource;

X is a preset non-negative integer;

Starting_index represents the index of the time unit in which the first grantless transfer resource is located; and

TU_index represents the index of the time unit in which any grantless transfer resource is located, including the first grantless transfer resource.

[0319] One skilled in the art may be aware that the blocks and steps of the algorithm in the examples described with reference to the embodiments disclosed herein may be implemented by electronic hardware or a combination of computer software and electronic hardware. The performance of functions by hardware or software depends on specific applications and design limitations of technical solutions. A person skilled in the art can use various methods to implement the described functions for each particular application, but such an implementation should not be considered to be outside the scope of this application.

[0320] One skilled in the art can clearly understand that, for simplicity and brevity of description, the detailed operating processes of the aforementioned system, apparatus, and apparatus refer to the corresponding processes in the aforementioned method embodiments. Details are not described here again.

[0321] In several embodiments provided herein, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. For example, the described hardware embodiments are merely examples. For example, the division into blocks is simply a logical division of functions and may be another division in the actual implementation. For example, many blocks or components may be combined or integrated into another system, or certain functions may be ignored or not performed. In addition, the interconnections or direct communications or communications connections shown or discussed may be indirect communications or communications connections through some interfaces, apparatus, or units, and may be implemented in electrical, mechanical, or other forms.

[0322] Blocks described as separate parts may or may not be physically separate, and parts shown as blocks may or may not be physical blocks, may be located in the same location, or may be distributed across multiple network blocks. Some or all of the blocks may be selected based on actual requirements to achieve the objectives of the solutions of the embodiments.

[0323] In addition, the functional blocks in the embodiments of the present application may be integrated into one processing unit, or each of the units may exist physically separately, or two or more units may be integrated into one unit.

[0324] When functions are implemented in the form of a software functional block and sold or used as an independent product, the functions may be stored on a computer-readable storage medium. Based on this understanding, the essence of the technical solutions in this application, or the part that contributes to the prior art, or some of the technical solutions can be implemented in the form of a software product. The computer program product is stored on a storage medium and includes several instructions for instructing a computing device (which may be a personal computer, a server, a network device, or the like) to perform all or some of the steps of the methods described in embodiments of the present application. The above storage medium includes any medium that can store program code, such as a USB flash drive, removable hard disk, read-only memory (ROM), random access memory (RAM) magnetic disk or optical disc.

[0325] The above descriptions are merely specific implementations of the present application, but are not intended to limit the scope of protection of the present application. Any change or replacement readily detectable by a person skilled in the art within the technical scope disclosed in this application should/should fall within the scope of this application. Therefore, the scope of protection of this application is to be protected by the claims.

Claims (40)

1. A method for determining a time domain resource used for grantless transmission, comprising: receiving by the terminal device the configuration information of the grantless transmission resource, wherein the configuration information contains: a time domain resource allocation parameter, a time domain resource offset parameter, and a time domain period of the grantless transmission resource, the time domain resource allocation parameter is used to indicate an index, in a slot, of an OFDM symbol , in which the first grantless resource is located, and the time domain resource offset parameter is used to indicate the index of the slot in which the first grantless resource is located; and determining the time domain location of the grantless transmission resource based on the index, in the slot, of the OFDM symbol in which the first grantless transmission resource is located, the index of the slot in which the first grantless transmission resource is located, and the time domain period of the grantless transmission resource, wherein determining the time domain location of the grantless resource based on the index, in the slot, of the OFDM symbol in which the first grantless resource is located, the index of the slot in which the first grantless resource is located, and the time domain period of the grantless resource comprises: determining the start OFDM symbol of the grantless transfer resource Y according to the following formula: SFN * M_slot * M_symbol + slot_index * M_symbol + symbol_index = [offset * M_symbol + symbol_index_Starting + Y * P] mod X, and SFN represents the system frame number of the radio frame in which the OFDM start symbol is located, M_slot represents the number of slots contained in one radio frame, M_symbol represents the number of OFDM symbols contained in one slot, slot_index represents the slot index in which the OFDM start symbol is located, symbol_index represents the index of the starting OFDM symbol in the slot, offset represents the index of the slot in which the first grantless transmission resource is located, symbol_index_Starting represents the index, in the slot, of the OFDM symbol in which the first grantless transmission resource is located, P represents the time domain period of the grantless transmission resource, and X is preset non-negative integer. 2. The method of claim 1, wherein offset = SFN_starting * M_slot + slot_index_Starting, wherein SFN_starting represents the system frame number of the radio frame in which the OFDM symbol with index symbol_index_Starting is located, slot_index_Starting represents the index, in the radio frame, of the slot in which the OFDM symbol is located with symbol_index_Starting index, and slot_index_Starting and SFN_Starting are determined based on the time domain resource offset parameter. 3. The method according to claim 1 or 2, while the method further comprises: discarding or ignoring the grantless transfer resource Y when the slot in which the specific grantless transfer resource Y is located is unavailable. 4. A method for determining a time domain resource used for grantless transmission, comprising: sending, by the network device, the configuration information of the grantless transmission resource to the terminal device, wherein the configuration information comprises: a time domain resource allocation parameter, a time domain resource offset parameter, and a time domain period of the grantless transmission resource, wherein the time domain resource allocation parameter is used to indicate an index, in a slot, an OFDM symbol in which the first grantless transmission resource is located, and a time domain resource offset parameter is used to indicate a slot index in which the first grantless transmission resource is located; and determining by the network device, based on the index, in the slot, the OFDM symbol in which the first grantless transmission resource is located, the index of the slot in which the first grantless transmission resource is located, and the time domain period of the grantless transmission resource, the index of the slot in which the grantless transmission resource is located, used to receive grantless data of the terminal device, wherein the network device determines, based on the index, in the slot, the OFDM symbol in which the first grantless resource is located, the index of the slot in which the first grantless resource is located, and the time domain period of the grantless transmission resource, the index of the slot in which the grantless resource is located transmission, used to receive non-grant data of the terminal device, contains: determining the start OFDM symbol of the grantless transfer resource Y according to the following formula: SFN * M_slot * M_symbol + slot_index * M_symbol + symbol_index = [offset * M_symbol + symbol_index_Starting + Y * P] mod X, and SFN represents the system frame number of the radio frame in which the OFDM start symbol is located, M_slot represents the number of slots contained in one radio frame, M_symbol represents the number of OFDM symbols contained in one slot, slot_index represents the slot index in which the OFDM start symbol is located, symbol_index represents the index of the starting OFDM symbol in the slot, offset represents the index of the slot in which the first grantless transmission resource is located, symbol_index_Starting represents the index, in the slot, of the OFDM symbol in which the first grantless transmission resource is located, P represents the time domain period of the grantless transmission resource, and X is preset non-negative integer. 5. The method of claim 4, wherein offset = SFN_starting * M_slot + slot_index_Starting, where SFN_starting represents the system frame number of the radio frame in which the OFDM symbol with index symbol_index_Starting is located, slot_index_Starting represents the index, in the radio frame, of the slot in which the OFDM symbol with symbol_index_Starting is located. symbol_index_Starting index, and slot_index_Starting and SFN_Starting are determined based on the time domain resource offset parameter. 6. The method according to p. 4 or 5, while the method further comprises: discarding or ignoring the grantless transfer resource Y when the slot in which the specific grantless transfer resource Y is located is unavailable. 7. Communication equipment, wherein the communication equipment comprises: a receiving module configured to receive configuration information of the grantless transmission resource sent by the network device, the configuration information comprising: a time domain resource allocation parameter, a time domain resource offset parameter, and a time domain period of the grantless resource, the time domain resource allocation parameter being used to indicate an index , in the slot, of the OFDM symbol in which the first grantless transmission resource is located, and the time domain resource offset parameter is used to indicate an index of the slot in which the first grantless transmission resource is located; and a processing module configured to determine the time domain location of the grantless transmission resource based on an index, in a slot, of an OFDM symbol in which the first grantless transmission resource is located, an index of the slot in which the first grantless transmission resource is located, and a time domain period of the grantless transmission resource, wherein the processing unit is configured to determine a start OFDM symbol of the grantless resource Y according to the following formula: SFN * M_slot * M_symbol + slot_index * M_symbol + symbol_index = [offset * M_symbol + symbol_index_Starting + Y * P] mod X, and SFN is the system frame number of the radio frame in which the OFDM start symbol is located, M_slot represents the number of slots contained in one radio frame, M_symbol represents the number of OFDM symbols contained in one slot, slot_index is the slot index in which the OFDM start symbol is located, symbol_index is the index of the OFDM start symbol in the slot, offset is the index of the slot in which the first grantless resource is located, symbol_index_Starting is the index, in the slot, of the OFDM symbol in which the first grantless resource is located, P is the time domain period of the grantless resource transmission, and X is a predefined non-negative integer. 8. Communication equipment according to claim 7, wherein offset = SFN_starting * M_slot + slot_index_Starting, wherein SFN_starting is the system frame number of the radio frame in which the OFDM symbol with symbol_index_Starting is located, slot_index_Starting is the index, in the radio frame, of the slot in which the symbol is located OFDM with index symbol_index_Starting, and slot_index_Starting and SFN_Starting are determined based on the time domain resource offset parameter. 9. The communications apparatus of claim 7 or 8, wherein the processing module is further configured to discard or ignore the grantless resource Y when the slot in which the determined grantless resource Y is located is unavailable. 10. Communication equipment, and the communication equipment contains: a sending module configured to send configuration information of the grantless transfer resource to the terminal device, the configuration information comprising: a time domain resource allocation parameter, a time domain resource offset parameter, and a time domain period of the grantless transfer resource, the time domain resource allocation parameter being used to specify an index , in the slot, of the OFDM symbol in which the first grantless transmission resource is located, and the time domain resource offset parameter is used to indicate an index of the slot in which the first grantless transmission resource is located; and a processing module configured to determine, based on an index, in a slot, an OFDM symbol in which the first grantless transmission resource is located, an index of the slot in which the first grantless transmission resource is located, and a time domain period of the grantless transmission resource, the slot index in which a grantless transmission resource used to receive grantless data of the terminal device, wherein the processing unit is configured to determine a grantless transfer resource OFDM start symbol Y according to the following formula: SFN * M_slot * M_symbol + slot_index * M_symbol + symbol_index = [offset * M_symbol + symbol_index_Starting + Y * P] mod X, wherein SFN is the system frame number of the radio frame in which the start OFDM symbol is located, M_slot is the number of slots contained in one radio frame, M_symbol represents the number of OFDM symbols contained in one slot, slot_index is the slot index in which the start OFDM symbol is located, symbol_index is the index of the OFDM start symbol in the slot, offset is the index of the slot in which the first grantless transmission resource is located, symbol_index_Starting is the index, in the slot, of the OFDM symbol in which the first grantless transmission resource is located, P is the time domain period of the resource grantless transfer, and X is a preset non-negative integer. 11. Communication equipment according to claim 10, wherein offset = SFN_starting * M_slot + slot_index_Starting, wherein SFN_starting is the system frame number of the radio frame in which the OFDM symbol is located with the symbol_index_Starting index, slot_index_Starting is the index, in the radio frame, of the slot in which the symbol is located OFDM with index symbol_index_Starting, and slot_index_Starting and SFN_Starting are determined based on the time domain resource offset parameter. 12. The communications apparatus of claim 10 or 11, wherein the processing module is further configured to discard or ignore the grantless resource Y when the slot in which the determined grantless resource Y is located is unavailable. 13. A terminal device, wherein the terminal device comprises a memory and a processor, wherein the memory is configured to store an instruction, the processor is configured to execute an instruction stored in the memory, and executing the instruction stored in the memory allows the terminal device to perform the method of any one of claims. 1-3. 14. A network device, the network device comprising a memory and a processor, the memory configured to store an instruction, the processor configured to execute an instruction stored in the memory, and executing the instruction stored in the memory allows the network device to perform the method of any one of claims. 4-6. 15. A computer-readable storage medium, wherein the computer program is stored on the computer-readable storage medium, and when the program is executed by the processor, the method according to any one of paragraphs is implemented. 1-6. 16. A communication chip designed to store executable instructions that, when executed by the terminal device, allow the method according to any one of claims. 1-3. 17. A communication chip designed to store executable instructions that, when executed by the terminal device, permit the execution of the method according to any one of paragraphs. 4-6.

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