WO2020221237A1

WO2020221237A1 - Method for adjusting time-domain resource boundary and communication device

Info

Publication number: WO2020221237A1
Application number: PCT/CN2020/087414
Authority: WO
Inventors: 黄曲芳; 徐小英
Original assignee: 华为技术有限公司
Priority date: 2019-04-30
Filing date: 2020-04-28
Publication date: 2020-11-05
Also published as: CN111867087A; CN111867087B

Abstract

The present application provides a method for adjusting a time-domain resource boundary and a communication device. The method comprises: determining a time-domain resource occupied by a data packet, the time-domain resource occupied by the data packet spanning a first time unit and a second time unit; and adjusting a boundary of the first time unit and/or a boundary of the second time unit so that the data packet is transmitted or received within the adjusted first time unit or the data packet is transmitted or received within the adjusted second time unit. According to the method provided in the present application, the time-domain resource boundary is adjusted so that the time-domain resource occupied by the data packet does not span the time-domain resource boundary, thereby reducing resource overheads of data packet transmission and improving the communication efficiency.

Description

Method and communication device for adjusting time domain resource boundary

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on April 30, 2019, the application number is 201910365314.4, and the application name is "Method and Communication Device for Adjusting Time Domain Resource Boundary", the entire content of which is incorporated by reference In this application.

Technical field

This application relates to the field of communications, and more specifically, to a method and a communication device for adjusting the boundary of time domain resources.

Background technique

The fifth generation (5G) mobile communication system is dedicated to supporting higher system performance, supporting multiple service types, different deployment scenarios, and a wider spectrum range. Among them, a variety of business types include enhanced mobile broadband (eMBB), massive machine type communication (mMTC), ultra-reliable and low-latency communications (URLLC), multimedia Broadcast multicast service (multimedia broadcast multicast service, MBMS) and positioning services, etc.

The URLLC service has relatively high requirements on the delay and reliability of data transmission. For this reason, the 5G communication system arranges the transmission of data packets in a time unit of shorter time length to meet the delay requirements of the URLLC service. For example, the symbol may be a unit of time for data transmission. However, when data is transmitted with a shorter time unit as the granularity, the data packet may be transmitted across the boundary of the subframe or time slot, which seriously reduces the reliability of the data packet transmission.

Summary of the invention

This application provides a method for adjusting the boundary of time domain resources. By adjusting the boundary of time domain resources, the time domain resources occupied by data packets do not cross the boundary of time domain resources, and the data transmission delay requirement is guaranteed. , Reduce the resource overhead of data packet transmission and improve communication efficiency.

In the first aspect, a method for adjusting the boundary of time domain resources is provided. The method may be executed by a network device, or may also be executed by a chip configured in the network device. The method includes: determining a time domain resource occupied by a data packet, wherein the time domain resource occupied by the data packet spans a first time unit and a second time unit. Adjust the boundary of the first time unit and/or the boundary of the second time unit, so that the data packet is sent or received within the adjusted first time, or so that the data packet is at the adjusted second time Send or receive within the unit.

The method for adjusting time domain resources provided by the first aspect, when the time domain resources occupied by a data packet spans two time domain resources (the first time unit and the second time unit), pass the boundary between the two time domain resources (The position of the two time domain resources on the time axis) is adjusted so that the time domain resource occupied by the data packet does not cross the time domain resource boundary. On the basis of ensuring the data transmission delay requirement, the data packet transmission is reduced. Resource overhead, improve communication efficiency.

In a possible implementation manner of the first aspect, the adjusting the boundary of the first time unit and/or the boundary of the second time unit includes: adjusting the boundary of the first time unit forward in the time domain Or adjust backward; and/or, adjust the boundary of the second time unit forward or backward in the time domain. In an implementation manner, by adjusting the boundary of the first time unit in the time domain and/or the boundary of the second time unit in the time domain forward or backward, it is possible to realize that the time domain resources occupied by the data packet do not span The time-domain resource boundary is easy to implement, and the overhead and complexity of adjusting the time-domain boundary of the time unit can be reduced.

In a possible implementation of the first aspect, the method further includes: sending first information, where the first information is used to adjust the boundary of the first time unit and/or the boundary of the second time unit, the second One piece of information includes: the time domain position of the first time unit, and/or the time domain position of the second time unit.

In a possible implementation of the first aspect, the method further includes: sending second indication information, where the second indication information is used to instruct to perform transmission delay compensation, or to indicate not to perform transmission delay compensation. The transmission delay is used to determine the absolute sending time of the data packet, or to determine the absolute time corresponding to the time domain resources occupied by the data packet. In this implementation manner, by instructing the terminal whether to perform transmission delay compensation, the network equipment and the terminal can have the same understanding of the same absolute time, which improves the accuracy of the absolute transmission time of the data packet determined by the terminal, and further The accuracy of determining the time unit that needs boundary adjustment is guaranteed, and the normal transmission of data is guaranteed.

In a possible implementation of the first aspect, the method further includes: sending an absolute time, the absolute time corresponding to the first time unit or the second time unit, for the terminal to determine the time unit corresponding to the absolute time. The corresponding moment. Optionally, the absolute time can also correspond to other time units. In the implementation manner, by performing transmission delay compensation on the absolute time, the accuracy of the transmission delay compensation can be improved, which is more flexible and easy to implement.

In a possible implementation of the first aspect, the adjusted boundary of the first time unit is the same as the boundary of the time domain resource occupied by the data packet, and/or the adjusted second time unit The boundary of is the same as the boundary of the time domain resource occupied by the data packet. In this implementation manner, it is possible to ensure that the data packet is not transmitted across the time unit boundary, so that more data can be transmitted in the adjusted time unit, which further saves time domain resources.

In the second aspect, a method for adjusting the boundary of time domain resources is provided. The method may be executed by a terminal, or may also be executed by a chip configured in the terminal. The method includes. Receive first information, the first information is used to adjust the boundary of the first time unit and/or the boundary of the second time unit, wherein the first information includes: the time domain position of the first time unit, and/ Or, the time domain location of the second time unit, and the time domain resource occupied by the data packet spans the first time unit and the second time unit. According to the first information, the boundary of the first time unit and/or the boundary of the second time unit after adjustment is determined, wherein the data packet is sent or received within the first time after adjustment, or the data packet Send or receive within the adjusted second time unit.

The second aspect provides the method for adjusting time domain resources, according to the information sent by the network device for adjusting two time domain resources (the first time unit and the second time unit), the boundary of the two time domain resources (two The position of the time domain resource on the time axis) is adjusted, wherein the time domain resource occupied by the data packet spans two time domain resources (the first time unit and the second time unit). The time domain resource occupied by the data packet does not cross the adjusted time domain resource boundary. On the basis of ensuring the data transmission delay requirement, the resource overhead of the data packet transmission is reduced and the communication efficiency is improved.

In a possible implementation of the second aspect, the method further includes: adjusting the boundary of the first time unit forward or backward in the time domain according to the first information; and/or, according to the The first information is to adjust the boundary of the second time unit forward or backward in the time domain.

In a possible implementation of the second aspect, the method further includes: receiving second indication information, where the second indication information is used to instruct to perform transmission delay compensation, or to indicate not to perform transmission delay compensation, the The transmission delay is used to determine the absolute transmission time of the data packet. Or used to determine the absolute time corresponding to the time domain resource occupied by the data packet. According to the second instruction information, perform transmission delay compensation or not perform transmission delay compensation. In this implementation manner, the terminal determines whether to perform transmission delay compensation according to the indication information sent by the network device whether to perform transmission delay compensation. This allows the terminal to determine its own clock to achieve the purpose of synchronization with the clock of the network device. It can make the network equipment and the terminal have the same understanding of the same absolute time, improve the accuracy of the absolute transmission time of the data packet determined by the terminal, and further ensure the accuracy of determining the time unit that needs to be adjusted. The normal transmission of data.

In a possible implementation of the second aspect, the method further includes: receiving an absolute time, where the absolute time corresponds to the first time unit or the second time unit. Optionally, the absolute time may also correspond to other time units, and the absolute time is used by the terminal to determine the time at which the absolute time corresponds to the time unit. According to the second indication information and the absolute time, it is determined whether to perform the transmission delay compensation for the absolute time, so that the terminal's own clock calibration information can be determined. Wherein, the second instruction information is used to instruct to perform the transmission delay compensation.

In a possible implementation manner of the first aspect or the second aspect described above, the first information further includes: an adjustment amount of the boundary of the first time unit or a time domain position of the boundary of the first time unit after adjustment; And/or, the adjustment amount of the boundary of the second time unit or the time domain position of the boundary of the second time unit after adjustment.

In a possible implementation manner of the first aspect or the second aspect described above, the first information further includes: the period of the boundary adjustment of the first time unit, and/or the period of the boundary adjustment of the second time unit .

In a possible implementation of the first aspect or the second aspect described above, the first information further includes first indication information, and the first indication information is used to indicate the adjustment and/or the boundary of the first time unit The adjustment of the second time unit boundary is applicable to uplink transmission, or applicable to downlink transmission, or applicable to uplink transmission and downlink transmission.

In a third aspect, a method for delay compensation is provided. The method may be executed by a terminal, or may also be executed by a chip configured in the terminal. The method includes: receiving third indication information from a network device, the third indication information being used to indicate whether to perform transmission delay compensation; when the third indication information instructs the terminal to perform transmission delay compensation, the terminal performs transmission delay compensation Or, when the third indication information indicates that the terminal does not perform transmission delay compensation, the terminal does not perform transmission delay compensation.

In the delay compensation method provided by the third aspect, when the terminal is required to perform delay compensation, the network device can instruct the terminal to perform delay compensation. When the terminal is not required to perform delay compensation, the network device can instruct the terminal not to perform delay compensation. It is possible to make the terminal and the network device have the same understanding of the same moment. When the terminal and the network device communicate at this moment, the reliability of data transmission between the terminal and the network device is improved.

In a possible implementation manner of the third aspect, the method further includes: receiving an absolute time, the absolute time corresponding to a boundary of a time unit; the terminal performing transmission delay compensation includes: performing the transmission according to the absolute time Time delay compensation. In this implementation manner, the terminal can compensate the transmission delay for the absolute time, so that the terminal and the network device have the same understanding of the absolute time. Therefore, after the absolute time or the absolute time starts, the terminal and the network device have the same understanding or alignment of the time. It is easy to realize and can improve the accuracy of transmission delay compensation.

In a possible implementation of the third aspect, the method further includes: receiving a compensation time; the terminal performing transmission delay compensation includes: performing the transmission delay compensation according to the absolute time and the compensation time. In this implementation manner, the terminal may calculate the length of a compensation time forward from the moment when the absolute time is received to determine a moment, which is regarded as the moment corresponding to the absolute time considered by the network device. This realizes that the terminal and the network equipment have the same understanding of the absolute time. It is easy to realize and can improve the accuracy of transmission delay compensation.

In a possible implementation manner of the third aspect, the method further includes: acquiring a timing advance TA command, where the TA command is used to adjust the TA value. The terminal performing transmission delay compensation includes: performing the transmission delay compensation according to the absolute time and the TA value.

In a possible implementation manner of the third aspect, when the third indication information indicates that the terminal does not perform transmission delay compensation, the method further includes: acquiring a timing advance TA command, where the TA command is used to adjust the TA value. Perform uplink transmission according to the TA value.

In a fourth aspect, a method for delay compensation is provided, and the method may be executed by a network device, or may also be executed by a chip configured in the network device. The method includes: determining third indication information, where the third indication information is used to indicate whether the terminal performs transmission delay compensation. Send the third instruction information to the terminal.

In the delay compensation method provided by the fourth aspect, when the terminal needs to perform delay compensation, the network device can instruct the terminal to perform delay compensation. When the terminal is not required to perform delay compensation, the network device can instruct the terminal not to perform delay compensation. It is possible to make the terminal and the network device have the same understanding of the same moment. When the terminal and the network device communicate at this moment, the reliability of data transmission between the terminal and the network device is improved.

In a possible implementation manner of the fourth aspect, the method further includes: sending an absolute time to the terminal, where the absolute time corresponds to a boundary of a time unit, and the terminal performs transmission delay compensation for the absolute time.

In a possible implementation manner of the fourth aspect, the method further includes: sending a compensation time to the terminal, where the compensation time is used for the terminal to compensate for transmission delay.

In a possible implementation manner of the fourth aspect, the method further includes: sending a timing advance TA command to the terminal, where the TA command is used to adjust the TA value.

In a fifth aspect, a communication device is provided, including: units or means for executing the steps in the first aspect or any possible implementation of the first aspect, or for executing the first aspect above The four aspects or units or means of each step in any possible implementation manner of the fourth aspect.

In a sixth aspect, a communication device is provided, including: units or means for executing the above second aspect or each step in any possible implementation of the second aspect, or for executing the above first aspect Units or means of each step in the three aspects or any possible implementation of the third aspect.

In a seventh aspect, a communication device is provided, including at least one processor, configured to be connected to a memory to call a program in the memory to execute the method provided in the above first aspect or any possible implementation of the first aspect, Or, execute the method provided in the above fourth aspect or any possible implementation of the fourth aspect. The memory can be located inside the device or outside the device. And the processor includes one or more.

In an eighth aspect, the present application provides a communication device, including at least one processor, configured to connect with a memory to call a program in the memory to execute the above second aspect or the method provided in any possible implementation of the second aspect Or, execute the method provided in the third aspect or any possible implementation of the third aspect. The memory can be located inside the device or outside the device. And the processor includes one or more.

In a ninth aspect, the present application provides a communication device, including at least one processor and an interface circuit, the at least one processor is configured to execute the above first aspect or the method provided in any possible implementation of the first aspect, or, It is used to implement the above fourth aspect or the method provided in any possible implementation manner of the fourth aspect.

In a tenth aspect, the present application provides a communication device, including at least one processor and an interface circuit, the at least one processor is configured to execute the above second aspect or the method provided in any possible implementation of the second aspect, or, It is used to execute the method provided in the above third aspect or any possible implementation of the third aspect.

In an eleventh aspect, a network device is provided, the network device includes the device provided in the fifth aspect, or the network device includes the device provided in the seventh aspect, or the network device includes the device provided in the ninth aspect Device.

In a twelfth aspect, a terminal is provided. The terminal includes the device provided in the sixth aspect, or the terminal includes the device provided in the eighth aspect, or the terminal includes the device provided in the tenth aspect.

In a thirteenth aspect, this application provides a program that, when executed by a processor, is used to execute the method provided in the first aspect or any possible implementation of the first aspect, or to execute the above The fourth aspect or the method provided in any possible implementation of the fourth aspect.

In a fourteenth aspect, this application provides a program that, when executed by a processor, is used to execute the above second aspect or the method provided in any possible implementation of the second aspect, or to execute the above The third aspect or the method provided in any possible implementation of the third aspect.

In the fifteenth aspect, this application provides a program product, such as a computer-readable storage medium, including the above program.

It can be seen that in the above aspects, when the time domain resource occupied by the data packet crosses the boundary of the time domain resource, the boundary of the time domain resource (the position of the time domain resource on the time axis) is adjusted to make the data packet The occupied time domain resources do not cross the boundary of time domain resources. On the basis of ensuring the data transmission delay requirement, the resource overhead of data packet transmission is reduced and the communication efficiency is improved.

Description of the drawings

Fig. 1 is a schematic diagram of data packet transmission with symbol granularity.

Figure 2 is a schematic diagram of a network architecture suitable for an embodiment of the present application.

FIG. 3 is a schematic interaction diagram of a method for adjusting a time domain resource boundary provided by an embodiment of the present application.

FIG. 4 is a schematic diagram after adjusting the boundary of the first time unit or the boundary of the second time unit.

FIG. 5 is a schematic interaction diagram of another example of a method for adjusting a time domain resource boundary provided by an embodiment of the present application.

FIG. 6 is a schematic interaction diagram of another example of a method for adjusting a time domain resource boundary provided by an embodiment of the present application.

FIG. 7 is another schematic diagram after adjusting the boundary of the first time unit or the boundary of the second time unit.

FIG. 8 is a schematic interaction diagram of another example of a method for adjusting a time domain resource boundary provided by an embodiment of the present application.

FIG. 9 is a schematic interaction diagram of another example of a method for adjusting a time domain resource boundary provided by an embodiment of the present application.

FIG. 10 is a schematic interaction diagram of an example of a method for adjusting delay compensation according to an embodiment of the present application.

FIG. 11 is a schematic interaction diagram of another example of a method for adjusting delay compensation according to an embodiment of the present application.

FIG. 12 is a schematic interaction diagram of another example of a method for adjusting delay compensation according to an embodiment of the present application.

FIG. 13 is a schematic interaction diagram of another example of a method for adjusting delay compensation according to an embodiment of the present application.

FIG. 14 is a schematic block diagram of a communication device provided by an embodiment of the present application.

FIG. 15 is a schematic structural diagram of another communication device provided by an embodiment of the present application.

FIG. 16 is a schematic structural diagram of a network device provided by an embodiment of the present application.

FIG. 17 is a schematic diagram of another structure of a network device provided by an embodiment of the present application.

FIG. 18 is a schematic structural diagram of a terminal provided by an embodiment of the present application.

Detailed ways

The technical solution in this application will be described below in conjunction with the drawings.

First, some terms of this application will be explained.

Terminal: A terminal is also called user equipment (UE), mobile station (MS), mobile terminal (MT), etc. It is a device that provides users with voice/data connectivity, such as , Handheld devices with wireless connectivity, or vehicle-mounted devices, etc. At present, some examples of terminals are: mobile phones (mobile phones), tablets, notebook computers, palmtop computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, and augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, and smart grid (smart grid) The wireless terminal in the transportation safety (transportation safety), the wireless terminal in the smart city (smart city), or the wireless terminal in the smart home (smart home), etc. The embodiments of the present application are not limited.

Network equipment: A network equipment is a device used to communicate with a terminal in a wireless network, such as a radio access network (RAN) node that connects the terminal to the wireless network. At present, some examples of RAN nodes are: gNB, transmission reception point (TRP), evolved Node B (evolved Node B, eNB), radio network controller (RNC), Node B (Node B) B, NB), base station controller (BSC), base transceiver station (BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit) , BBU), or wireless fidelity (Wifi) access point (AP), etc. In a network structure, a network device may include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node. The embodiments of the present application are not limited.

In the embodiments of the present application, the symbol is also referred to as a time-domain symbol, which can be an orthogonal frequency division multiplexing (OFDM) symbol, or a single carrier frequency division multiple access (single carrier frequency division multiple access) symbol. , SC-FDMA) symbol, where SC-FDMA is also called orthogonal frequency division multiplexing with transform precoding (OFDM with TP).

The communication between the network equipment and the terminal follows a certain protocol layer structure. For example, the control plane protocol layer structure may include the functions of the radio resource control (radio resource control, RRC) layer, the PDCP layer, the RLC layer, the media access control (MAC) layer, and the physical layer. The user plane protocol layer structure can include the functions of the PDCP layer, RLC layer, MAC layer, and physical layer; among them, the physical layer is located at the lowest layer (layer 1), and the MAC layer, RLC and PDCP belong to the second layer (layer 2) , RRC belongs to the third layer (layer three). In an implementation, the PDCP layer may further include a service data adaptation protocol (SDAP) layer.

"Multiple" refers to two or more, and other measure words are similar. "And/or" describes the association relationship of the associated object, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone. In addition, for elements in the singular form "a", "an" and "the", unless the context clearly dictates otherwise, it does not mean "one or only one", but means "one or more At one". For example, "a device" means to one or more such devices. Furthermore, at least one (at least one of)..." means one or any combination of subsequent associated objects, for example, "at least one of A, B and C" includes A, B, C, AB, AC, BC, or ABC.

In the embodiments of the present application, the terminal or network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory). The operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating system, Unix operating system, Android operating system, iOS operating system, or windows operating system. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. In addition, the embodiments of the application do not specifically limit the specific structure of the execution subject of the methods provided in the embodiments of the application, as long as the program that records the codes of the methods provided in the embodiments of the application can be provided according to the embodiments of the application. For example, the execution subject of the method provided in the embodiment of the present application may be a terminal or a network device, or a functional module in the terminal or network device that can call and execute the program.

In addition, various aspects or features of the present application can be implemented as methods, devices, or products using standard programming and/or engineering techniques. The term "article of manufacture" as used in this application encompasses a computer program accessible from any computer-readable device, carrier, or medium. For example, computer-readable media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CD), digital versatile discs (DVD)) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.). In addition, various storage media described herein may represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.

The specific requirements of the URLLC service include: data transmission reliability of 99.999%, transmission delay of less than 1ms, and minimum signaling overhead while meeting the requirements of high reliability and low delay. Ensuring the reliability and delay of URLLC has become an issue of great concern in this field.

The data transmission of the existing 5G system is arranged in units of subframes or slots (slot), and data packets can be transmitted from the start position (start boundary) of a subframe or slot. The time length of the slot or subframe depends on the subcarrier spacing. For example, taking a 15KHz subcarrier interval as an example, the time length of one slot is 1ms, one subframe includes two time slots, and the time length of one subframe is 2ms. Obviously, scheduling data transmission with slot as the granularity cannot meet the delay requirements in industrial scenarios.

For this reason, the 5G communication system introduces the concept of short transmission time interval (sTTI), that is, the transmission is arranged in a time unit of a shorter time length to meet the delay requirement of the URLLC service. For example, the symbol may be a unit of time for data transmission. For the ordinary cyclic prefix, one slot includes 14 symbols, and for the extended cyclic prefix, one slot includes 12 symbols.

For data transmission of data with a symbol as the time granularity, the data packet can be transmitted from the start position (start boundary) of a symbol. For example, taking the 15KHz sub-carrier interval as an example, if the "symbol" granularity is used for transmission, the data packet transmission time on the air interface is 1/14ms. Due to limitations of the physical layer in the current protocol layer, a data packet cannot be transmitted across two subframes or slots, that is, a data packet cannot be transmitted across a slot boundary or a subframe boundary. In data transmission with symbol granularity, if the time domain position of the data packet transmission is on the last or several symbols of a slot or subframe, the data packet may cross the slot boundary or subframe. The problem of frame boundary transmission. For example, Fig. 1 is a schematic diagram of data packet transmission with symbol granularity. Assume that a time slot includes 14 symbols, and the numbers of the 14 symbols are 0 to 13 respectively. In the example shown in Figure 1, suppose that the position where a data packet starts to be transmitted is on the last 2 symbols of time slot n, and the length of time domain resources occupied by the data packet is greater than 2 symbols, and the data packet will cross over. The problem of boundary transmission between slot n and slot n+1. Currently, there are three main solutions to this problem:

The first type: the data packet is transmitted on the remaining limited symbols in the current subframe/slot. For example, in the example shown in FIG. 1, the data packet is transmitted on the last 2 symbols of time slot n. However, in this way, because there are only 2 symbol bits left in the time domain, a large bandwidth is needed to transmit this data packet. This bandwidth value may be greater than the cell bandwidth, which is not possible in this case. In addition, in an industrial environment, data packets from multiple terminals usually arrive at the same time. If this method is adopted, it is impossible to use limited sign bits to transmit data from multiple terminals.

The second type: postpone the data packet to the next subframe/slot before starting transmission. For example, in the example shown in FIG. 1, the data packet is postponed to a certain symbol in time slot n+1 to start transmission. In this way, the data packet transmission delay will increase, and it cannot meet the delay requirements of the URLLC service.

The third type: When data starts to be transmitted, if the subframe/slot is not enough to transmit the data packet, divide the data packet into two transmission blocks (TB), and place the first transmission block in this subframe /slot transmission, the second transmission block is transmitted in the next subframe/slot. For example, in the example shown in Figure 1, the data packet is divided into two transmission blocks at the time slot boundary, the first transmission block is transmitted in time slot n, and the second transmission block is in time slot n+1 transmission. However, in this way, the data packet needs to be divided into two transmission blocks for transmission, and additional overhead needs to be introduced. For example, if the data packet is divided into two transmission blocks, additional header overhead of the data packet needs to be introduced.

It can be seen that none of the above solutions can well solve the problem of data packet transmission across time slots or subframe boundaries.

In view of this, this application provides a method for adjusting the time domain resource boundary. By adjusting the time domain resource boundary (for example, a subframe or a time slot), the transmission of data packets may not cross the time and time domain resource boundary. On the basis of the data transmission delay requirement, the resource overhead of data packet transmission is reduced and the communication efficiency is improved.

In order to facilitate the understanding of the embodiments of the present application, firstly, a communication system suitable for the embodiments of the present application will be briefly introduced with reference to FIG. 2.

Fig. 2 is a schematic diagram of a communication system suitable for an embodiment of the present application. As shown in FIG. 2, the mobile communication system 100 may include a core network device 110, a wireless access network device 120, and at least one terminal (the terminal 130 and the terminal 140 shown in FIG. 2). The terminal is connected to the wireless access network device in a wireless manner, and the wireless access network device is connected to the core network device in a wireless or wired manner. The core network device and the wireless access network device can be separate and different physical devices, or they can integrate the functions of the core network device and the logical function of the wireless access network device on the same physical device, or it can be a physical device It integrates the functions of part of the core network equipment and part of the wireless access network equipment. The terminal can be a fixed location, or it can be movable. The terminal may transmit the uplink data packet to the wireless access network device 120, and the wireless access network device 120 sends the data packet to the core network device 110. The wireless access network device 120 may also transmit the downlink data packet from the core network device 110 to the terminal. The wireless access network device 120 may be the aforementioned network device.

The wireless access network equipment can include a baseband device and a radio frequency device. The baseband device can be implemented by one node or multiple nodes. The radio frequency device can be implemented remotely from the baseband device, or integrated into the baseband device, or part of it. The remote part is integrated in the baseband device. For example, in a long-term evolution (LTE) communication system, the radio access network equipment includes a baseband device and a radio frequency device, where the radio frequency device can be arranged remotely from the baseband device, such as a remote radio unit (remote radio unit, RRU) is arranged farther away from the BBU.

The communication between the terminal and the wireless access network device follows a certain protocol layer structure. For example, the protocol layer of the radio access network device includes the physical layer, the MAC layer, the RLC layer, the PDCP layer, and the RRC layer. The protocol layer of the terminal may include a physical layer, a MAC layer, an RLC layer, a PDCP layer, and an RRC layer.

The functions of these protocol layers can be implemented by one node or multiple nodes; for example, in an evolution structure, the radio access network device can include a centralized unit (CU) and a distributed unit (CU). DU), multiple DUs can be centrally controlled by one CU. CU and DU can be divided according to the protocol layers of the wireless network. For example, the functions of the PDCP layer and above are set in the CU, the protocol layers below the PDCP, and the functions of the RLC layer and MAC layer are set in the DU.

In addition, the radio frequency device can be remote, not placed in the DU, can also be integrated in the DU, or part of the remote part is integrated in the DU, and there is no restriction here.

Should be understood. FIG. 2 is only a schematic diagram. The communication system may also include other network equipment, such as wireless relay equipment and wireless backhaul equipment, which are not shown in FIG. 2. The embodiments of the present application do not limit the number of core network equipment, radio access network equipment, and terminals included in the mobile communication system. In the mobile communication system 100, the wireless access network device 120 may be the aforementioned network device.

The method for adjusting the time domain resource boundary provided by the present application will be described in detail below with reference to FIG. 3. FIG. 3 is a schematic flowchart of the method 200 for adjusting the time domain resource boundary according to an embodiment of the present application. The method 200 may be applied to the method shown in FIG. In the scenario, for example, it can be applied to scenarios that require relatively high data packet transmission delay, such as engineering automation, process control and other scenarios. The embodiments of the application are not limited here.

It should be understood that, in the following description, the terminal and the network device are taken as an example of the execution subject of the execution method of each embodiment to describe the method of each embodiment. As an example and not a limitation, the execution subject of the execution method may also be a chip applied to a terminal and a network device.

As shown in FIG. 3, the method 200 shown in FIG. 3 may include step S210 to step S220. The steps in the method 200 are described in detail below with reference to FIG. 3. The method 200 includes:

S210: The network device determines the time domain resource occupied by the data packet, where the time domain resource occupied by the data packet spans the first time unit and the second time unit.

S220. The network device adjusts the boundary of the first time unit and/or the boundary of the second time unit so that the data packet is sent or received within the adjusted first time, or the data packet is Send or receive within the second time unit.

Specifically, when the network device needs to send a data packet to the terminal, the network device may determine in advance the time or moment of sending the data packet to the terminal. The network device can determine the time domain resources occupied by the data packet. The time domain resource occupied by the data packet spans the first time unit and the second time unit. For example, once a data packet reaches the access layer of a network device, the network device can think that the time domain resource occupied by the data packet when it reaches the access layer is the starting position of the time domain resource, or the network device can also think that the data packet has arrived The time domain resources occupied after a certain period of time interval from the time of the access layer is the starting position of the time domain resources occupied by the data packet. The network device can determine the time domain resources occupied by the data packet in this way. After the data packet reaches the access layer of the network device, the network device will make a judgment. If the first time unit boundary or the second time unit boundary before adjustment is used, the quality of service (QoS) requirements of the data packet cannot be met , It is determined that the time domain position of the first time unit or the second time unit needs to be adjusted. Or, when the terminal needs to send a data packet to the network, the terminal may determine in advance the time or moment of sending the data packet to the network device. That is, the terminal can also determine the time domain resources occupied by the data packet. The time domain resources occupied by the data packet may include, for example, the number of symbols occupied by the data packet and the start and end symbol numbers, the number of timeslots occupied by the data packet and the start and end timeslot numbers, or the sum of the number of subframes occupied by the data packet. Starting and ending subframe numbers, etc. Alternatively, the time domain resources occupied by the data packet may also include the start time and end time of data transmission represented by absolute time. Moreover, the time domain resource occupied by the data packet spans the first time unit and the second time unit. In the embodiment of the present application, the unit of the first time unit may be a radio frame, a subframe, a time slot, or a symbol. The unit of the second time unit may also be a radio frame, a subframe, a time slot, or a symbol. For example, in the example shown in FIG. 1, the first time unit may be time slot n, and the second time unit may be time slot n+1, and the time domain resource occupied by the data packet spans time slot n and time. The boundary of the gap n+1. For the example shown in Figure 1, it can also be seen that the time domain resources occupied by the data packet cross the boundary between symbol 13 and symbol 0, that is, the time domain resources occupied by the data packet can also cross two symbols. Symbol boundary.

It should be understood that, in the embodiment of the present application, the time domain resources occupied by the data packet may also span the subframe boundary of two subframes, or across the frame boundary of two radio frames, or across two time slots. Slot boundary, or symbol boundary that spans two symbols. Wherein, in the case of crossing the symbol boundary of two symbols, the first symbol of the two symbols may be the last symbol of the first time slot in two consecutive time slots, and the first symbol of the two symbols The two symbols may be the first symbol of the second slot in two consecutive slots. In the embodiment of the present application, the number of radio frames, subframes, time slots, or symbols included in the first time unit or the second time unit is not limited. The number of radio frames, subframes, time slots, or symbols included in the time of the first time unit may be the same as or different from the number of radio frames, subframes, time slots, or symbols included in the second time unit.

When the time domain resource occupied by the data packet crosses the first time unit and the second time unit, in S220, the network device adjusts the boundary of the first time unit and/or the boundary of the second time unit. The adjustment of the boundary of the first time unit here can be understood as adjusting the position of the first time unit on the time axis (in the time domain), that is, the first time unit is translated on the time axis as a whole, and the time of the first time unit itself The length can remain the same. Similarly, adjusting the boundary of the second time unit can be understood as adjusting the position of the second time unit on the time axis. After adjusting the boundary of the first time unit and/or the boundary of the second time unit, the data packet does not cross the boundary between the adjusted first time unit and the adjusted second time unit. In other words, after adjusting the boundary of the first time unit and/or the second time unit, the time domain resources occupied by the data packet are completely within the first time unit after the adjusted boundary or adjusted In the second time unit after the back boundary. After adjusting the boundary of the first time unit and/or the boundary of the second time unit, the network device can send or receive the data packet within the adjusted first time, or, in the adjusted second time unit Send or receive the data packet within. For example, FIG. 4 shows a schematic diagram after adjusting the boundary of the first time unit or the boundary of the second time unit. As shown in Figure 4, after adjusting the first time unit and the boundary or the boundary of the second time unit, the time domain resources occupied by the data packet completely fall within the adjusted first time unit, or completely fall within the adjusted first time unit. After the second time unit.

The method for adjusting the boundary of time domain resources provided by the present application, when the time domain resource occupied by a data packet crosses the boundary of two time domain resources (the first time unit and the second time unit), by comparing the two time domain resources The boundary of the data packet is adjusted so that the time domain resource occupied by the data packet does not cross the boundary of the time domain resource. On the basis of ensuring the data transmission delay requirement, the resource overhead of the data packet transmission is reduced and the communication efficiency is improved.

It should be understood that in the embodiment of the present application, only the boundary of the first time unit may be adjusted, and the boundary of the second time unit may not be adjusted. For example, under the condition that no other data packets need to be sent or received on the second time unit, only the boundary of the first time unit may be adjusted. The time domain resources occupied by the data packet completely fall within the adjusted first time unit. The network device receives or sends the data packet within the adjusted first time unit. Optionally, only the boundary of the second time unit may be adjusted, and the boundary of the first time unit may not be adjusted. For example, under the condition that no other data packets need to be sent or received on the first time unit, only the boundary of the second time unit may be adjusted. The time domain resources occupied by the data packet completely fall within the adjusted second time unit. The network device receives or sends the data packet within the adjusted second time unit. Optionally, both the boundary of the first time unit and the boundary of the second time unit may be adjusted. The network device receives or sends the data packet in the adjusted first time unit, and receives or sends other data packets in the adjusted second time unit. Of course, the network device may also receive or send the data packet in the adjusted second time unit, and receive or send other data packets in the adjusted first time unit.

It should also be understood that the first time unit and the second time unit may be downlink time units. If the first time unit and the second time unit are downlink time units, the network device may send to the terminal within the adjusted first time after the adjustment. The data packet, or, the network device sends the data packet to the terminal within the adjusted second time unit. Optionally, if the first time unit and the second time unit may also be uplink time units, when the terminal needs to send a data packet to the network, the terminal may determine in advance the time or moment of sending the data packet to the network device. That is, the terminal can also determine the time domain resources occupied by the data packet. If the first time unit and the second time unit are upstream time units. The network device may receive the data packet sent by the terminal within the adjusted first time after adjustment, or the network device may receive the data packet sent by the terminal within the second time unit after adjustment.

In some examples of the present application, taking FIG. 5 as an example, on the basis of the method steps shown in FIG. 3, the method 200 further includes S230.

S230. The network device sends first information to the terminal. The first information is used by the terminal to adjust the boundary of the first time unit and/or the boundary of the second time unit. The first information includes: the time of the first time unit. Domain position, and/or, the time domain position of the second time unit.

S240: The terminal determines the boundary of the first time unit and/or the boundary of the second time unit after adjustment according to the first information, wherein the terminal sends or receives the data packet within the adjusted first time, or , The terminal sends or receives the data packet within the adjusted second time unit.

For the description of S210 and S220 shown in FIG. 5, reference may be made to the above description of S210 and S220. For brevity, details are not repeated here.

In S230, after adjusting the boundary of the first time unit and/or the boundary of the second time unit, the network device may adjust the boundary of the first time unit and/or the boundary of the second time unit. The information (first information) is sent to the terminal for the terminal to determine the boundary of the first time unit and/or the boundary of the second time unit after adjustment according to the first information. According to the first information, the terminal may determine the boundary of the first time unit and/or the boundary of the second time unit after adjustment. Here, determining the boundary of the first time unit after adjustment may be understood as determining the position on the time axis or the position in the time domain in the adjusted first time unit. Similarly, determining the boundary of the second time unit after adjustment can be understood as determining the position on the time axis or the position in the time domain in the adjusted second time unit. After determining the boundary of the first time unit and/or the boundary of the second time unit after the adjustment, the terminal can send the data packet to the network device within the first time unit after the adjustment or the second time unit after the adjustment , Or receive the data packet sent by the network device.

The first information includes the time domain position of the first time unit and/or the time domain position of the second time unit. The time domain position of the first time unit may be understood as the time domain position of the first time unit before adjustment, and the time domain position of the second time unit may be understood as the time domain position of the second time unit before adjustment. The terminal can determine which time unit or time units need to be adjusted according to the time domain position of the first time unit and/or the time domain position of the second time unit, and then combine other information, such as the adjustment amount of the first time unit boundary And/or the adjustment amount of the boundary of the second time unit determines the adjusted boundary of the first time unit and/or the boundary of the second time unit after adjustment. Therefore, the data packet can be sent to the network device, or the data packet sent by the network device can be received within the adjusted first time unit or the adjusted second time unit.

Optionally, in a possible implementation manner, the first information further includes: an adjustment amount of the boundary of the first time unit or a time domain position of the boundary of the first time unit after adjustment; and/or, The adjustment amount of the boundary of the second time unit or the time domain position of the boundary of the second time unit after adjustment.

Specifically, the first information is used by the terminal to determine the boundary of the first time unit and/or the boundary of the second time unit after adjustment. Therefore, in addition to the time domain position of the first time unit and/or the time domain position of the second time unit, the first information may also include the adjustment amount of the boundary of the first time unit and/or the second time unit. The adjustment amount of the cell boundary. For example, the terminal may determine the adjusted boundary of the first time unit after adjustment according to the adjustment amount of the boundary of the first time unit and the time domain position of the first time unit. The terminal may determine the boundary of the first time unit after adjustment according to the adjustment amount of the boundary of the second time unit and the time domain position of the second time unit. That is, the first information may include the adjustment amount of the boundary of the first time unit and the time domain position of the first time unit, and/or the adjustment amount of the second time unit boundary and the time domain position of the second time unit . The adjustment amount of the boundary of the first time unit or the adjustment amount of the boundary of the first time unit may be milliseconds (ms), microseconds (μs), nanoseconds (ns), or a certain absolute time length, etc., of course, The unit of the adjustment amount can also be other longer or shorter time units.

In another possible implementation manner, the first information may further include the time domain position of the boundary of the first time unit after adjustment, and/or the time domain position of the boundary of the second time unit after adjustment. For example, the terminal may determine the boundary of the first time unit after adjustment according to the time domain position of the boundary of the first time unit after adjustment and the time domain position of the boundary of the first time unit before adjustment. The terminal may determine the boundary of the second time unit after adjustment according to the time domain position of the boundary of the second time unit after adjustment and the time domain position of the boundary of the second time unit before adjustment. That is, the first information may include the time domain position of the boundary of the first time unit after adjustment and the time domain position of the first time unit before adjustment, and/or the time domain position of the boundary of the second time unit after adjustment And the time domain position of the second time unit before adjustment.

In another possible implementation manner, the first information may include the time domain position of the boundary of the first time unit after adjustment, and/or the time domain position of the boundary of the second time unit after adjustment. That is, the terminal may determine the adjusted boundary of the first time unit according to the adjusted time domain position of the boundary of the first time unit. The terminal may determine the adjusted boundary of the second time unit according to the adjusted time domain position of the boundary of the second time unit.

In another possible implementation manner, the first information may further include the period of the boundary adjustment of the first time unit, and/or the period of the boundary adjustment of the second time unit. Specifically, if the boundary adjustment of the first time unit is periodic, the first information may also include the period of the boundary adjustment of the first time unit. If the boundary adjustment of the second time unit is periodic, the first information may further include the period of the boundary adjustment of the second time unit. Specifically, the period can be represented by the number of radio frames, the number of subframes, the number of slots, the number of symbols, or the specific length of time. The specific length of time can be an absolute length of time. If the period of the boundary adjustment of the first time unit and/or the period of the boundary adjustment of the second time unit is greater than the duration of a radio frame (10.24 seconds), in addition to the above parameters, the superframe number can also be used to indicate the The period of the boundary adjustment of the first time unit and/or the period of the boundary adjustment of the second time unit.

It should be understood that in this embodiment of the present application, in addition to the above-mentioned content, the first information may also include other content used by the terminal to determine the boundary of the first time unit and/or the boundary of the second time unit after adjustment. . The embodiments of the application are not limited here.

In the embodiment of the present application, the time domain position of the first time unit may be characterized by the absolute time domain position or the time unit number of the first time unit. The absolute time domain position of the first time unit may be characterized by the absolute time of the start position of the first time unit and the absolute time of the end position of the first time unit. For example, the absolute time domain position of the first time may start from T1ms and end at T2ms, and T2 is greater than T1. The unit of absolute time can be milliseconds (ms), microseconds (μs), or nanoseconds (ns). The time unit number of the first time unit can be understood as the number of the time domain resource unit occupied by the first time unit. For example, if the first time unit is a wireless frame, the time unit number of the first time unit is the wireless frame number, if the first time unit is a subframe, the time unit number of the first time unit is the subframe number, if The first time unit is a time slot, and the time unit number of the first time unit is the time slot number and so on. For example, if the first time unit is a time slot, then the time unit number of the first time unit is time slot n, that is, the time domain position of the first time unit is represented by the time slot n.

Optionally, in other possible implementation manners of the present application, the first information further includes first indication information, and the first indication information is used to indicate the adjustment of the boundary of the first time unit and/or the The adjustment of the second time unit boundary is suitable for uplink transmission, or for downlink transmission, or for uplink transmission and downlink transmission.

Specifically, the first information may also include first indication information for indicating that the adjustment of the boundary of the first time unit and/or the adjustment of the boundary of the second time unit is suitable for uplink transmission. For example, when the first indication information is used to indicate that the adjustment of the boundary of the first time unit is applicable to uplink transmission, after receiving the first indication information, the terminal receives the network device in the adjusted first time unit Send the downlink data packet, and calculate the time domain position of the corresponding uplink transmission time unit based on the adjusted boundary of the first time unit, and send it to the network device at the determined time domain position of the uplink transmission time unit Upstream data packet.

When the first indication information is used to indicate that the adjustment of the boundary of the first time unit is suitable for downlink transmission, after receiving the first indication information, the terminal receives the information sent by the network device within the adjusted first time unit Downlink data packets, and calculate the time domain position of the corresponding uplink transmission time unit based on the boundary of the first time unit before adjustment, and send uplink data to the network device at the determined time domain position of the uplink transmission time unit package.

When the first indication information is used to indicate that the adjustment of the boundary of the first time unit is applicable to downlink transmission and uplink transmission, after receiving the first indication information, the terminal receives the network within the adjusted first time unit The downlink data packet sent by the device, and the time domain position of the corresponding uplink transmission time unit is calculated based on the adjusted boundary of the first time unit, and the time domain position of the determined uplink transmission time unit is reported to the network device Send upstream data packets.

Similarly, when the first indication information is used to indicate that the adjustment of the boundary of the second time unit is suitable for uplink transmission, or is suitable for downlink transmission, or is suitable for uplink transmission and downlink transmission, it is the same as the foregoing The adjustment of the boundary is used for uplink transmission, or is suitable for downlink transmission, or is suitable for uplink transmission and the situation of downlink transmission is similar, and will not be repeated here.

For example, when the first indication information is used to indicate that the adjustment of the boundary of the first time unit and the adjustment of the boundary of the second time unit are suitable for uplink transmission, after the terminal receives the first indication information, The downlink data packet sent by the network device is received in the first time unit and the second time unit, and the corresponding uplink transmission is calculated based on the adjusted boundary of the first time unit and the boundary of the second time unit, respectively The time domain position of the time unit, and send the uplink data packet to the network device at the determined time domain position of the uplink transmission time unit.

In some examples of the present application, taking FIG. 6 as an example, on the basis of the method steps shown in FIG. 5, the method 200 further includes S231.

S231. The terminal adjusts the boundary of the first time unit forward or backward in the time domain according to the first information; and/or, according to the first information, the boundary of the second time unit is in the time domain. Adjust upward or backward.

For the description of S210, S220, S230, and S240 shown in FIG. 6, reference may be made to the foregoing description of S210, S220, S230, and S240. For brevity, details are not repeated here.

In S231 and the aforementioned S220, when adjusting the boundary of the first time unit and/or the boundary of the second time unit, the boundary of the first time unit may be adjusted forward or backward in the time domain; and /Or, the boundary of the second time unit is adjusted forward or backward in the time domain. The forward or backward adjustment here is based on the original time domain position (time domain boundary) of the first time unit or the second time unit. For example, suppose the original time domain position of the first time unit is time slot n+1, and the original time domain position of the second time unit is time slot n+2. If the boundary of the first time unit is adjusted forward relative to the original time domain position of the first time unit, and the adjusted time domain position of the first time unit is obtained, then the time domain position of the adjusted first time unit is The domain and time slot n partially overlap. If the boundary of the first time unit is adjusted backwards relative to the original time domain position of the first time unit, and the adjusted time domain position of the first time unit is obtained, then the time domain position of the adjusted first time unit is The domain and time slot n+2 partially overlap. In addition, the data packets all fall within the adjusted first time unit or the adjusted second time unit. Optionally, the relationship between the positive and negative values of the adjustment amount of the first time unit boundary and the adjustment direction may be predefined or preconfigured. For example, if the adjustment amount of the first time unit boundary is positive, it means that the first time unit boundary is adjusted backward in the time domain. If the adjustment amount of the first time unit boundary is negative, it means the first time unit boundary is adjusted The cell boundary is adjusted forward in the time domain. Or, if the adjustment amount of the first time unit boundary is positive, it means that the first time unit boundary is adjusted forward in the time domain, and if the adjustment amount of the first time unit boundary is negative, it means the first time unit boundary is adjusted. The cell boundary is adjusted backward in the time domain. Similarly, the boundary of the second time unit can also be adjusted forward or backward in the time domain, and the reference for the forward adjustment or backward adjustment is the original time domain position of the second time unit.

By adjusting the boundary of the first time unit in the time domain and/or the boundary of the second time unit in the time domain forward or backward, it is possible to realize that the time domain resource occupied by the data packet does not cross the time domain resource boundary, It is easy to implement and can reduce the overhead and complexity of adjusting the time domain boundary of the time unit.

Optionally, in some possible implementation manners of the present application, after the terminal or network device adjusts the boundary of the first time unit and/or the boundary of the first time unit, the adjusted boundary of the first time unit It is the same as the boundary of the time domain resource occupied by the data packet, and/or the adjusted boundary of the second time unit is the same as the boundary of the time domain resource occupied by the data packet. Description will be given with reference to the example shown in FIG. 7. In FIG. 7, it is assumed that the original time domain position of the first time unit is time slot n+1, and the original time domain position of the second time unit is time slot n+2. The time domain resource occupied by the data packet crosses the boundary between time slot n+1 and time slot n+2. For example, if the boundary of time slot n+1 is adjusted, the adjusted boundary of time slot n+1 may be the same as the end position of the time domain resource occupied by the data packet. If the boundary of time slot n+2 is adjusted, the adjusted boundary of time slot n+2 can be the same as the start position of the time domain resource occupied by the data packet. By making the adjusted boundary of the first time unit the same as the boundary of the time domain resource occupied by the data packet, and/or, the adjusted boundary of the second time unit and the time domain occupied by the data packet The resource boundaries are the same, and it is possible to ensure that data packets are not transmitted across the time unit boundary, so that more data can be transmitted in the adjusted time unit, which further saves time domain resources.

It should be understood that in the embodiment of the present application, the adjusted boundary of the first time unit and the boundary of the time domain resource occupied by the data packet may also be different, and/or the adjusted boundary of the second time unit The boundary and the boundary of the time domain resource occupied by the data packet may also be different. It is only necessary to ensure that the data packet completely falls within the adjusted first time unit or the second time unit. This application regards the adjusted boundary between the first time unit and the second time unit and the data packet The position of the boundary of the time domain resource is not restricted,

In some examples of the present application, taking FIG. 8 as an example, on the basis of the method steps shown in FIG. 3, the method 200 further includes S232 and S233.

S232. The network device sends second indication information to the terminal, where the second indication information is used to indicate transmission delay compensation or not to perform transmission delay compensation, and the transmission delay is used to determine the absolute transmission of the data packet. time. Correspondingly, the terminal receives the second indication information.

S233: The terminal performs transmission delay compensation or does not perform transmission delay compensation according to the second instruction information.

For the description of S210 and S220 shown in FIG. 8, reference may be made to the above description of S210 and S220. For brevity, details are not repeated here.

In addition to notifying the terminal of which time unit boundary or time units need to be adjusted through the aforementioned first information, the network device may also directly notify the terminal to adjust the time unit corresponding to a certain absolute time. In this case, the network equipment and the terminal need to have the same understanding of a certain absolute time, because the information transmission between the network equipment and the terminal takes time (there is a transmission delay). In this case, the network device and the terminal may have inconsistent understanding of a certain absolute time. For example, suppose that a certain data packet will be sent at the time of 320ms506.5us at 14:34:45 on January 25, 2019, and the network device will notify the terminal: It will be 320ms506 at 14:34:45 on January 25, 2019. The boundary of the radio frame, subframe, or time slot corresponding to 5us is adjusted forward or backward by 200ns. At this time, it is necessary to ensure that the terminal and network equipment are in line with "320ms506 at 14:34:45 on January 25, 2019. 5us" understanding is consistent. Due to the transmission delay, there may be situations where the network equipment and the terminal have inconsistent understanding of a certain absolute time. For example, the terminal may interpret "January 25, 2019, 14:34:45, 320ms506.5us" as a moment in the 7th subframe of the 38th radio frame, and the network device may interpret "January 2019 At 14:34:45 on the 25th, 320ms506.5us" is understood as a certain moment in the 8th subframe of the 38th wireless frame. There will be a phenomenon that the network equipment and the terminal have inconsistent understanding of the same absolute time, which will cause the terminal and The time unit to be adjusted determined by the network device is not the same, resulting in a communication error. Therefore, in S232, the network device may send second indication information to the terminal, where the second indication information is used to instruct the terminal to perform transmission delay compensation or to instruct the terminal not to perform transmission delay compensation. The transmission delay is used by the terminal to determine the absolute sending time of the data packet, or used to determine the absolute time corresponding to the time domain resources occupied by the data packet. Optionally, the transmission delay can also be used for the terminal to determine the time corresponding to other time domain resources. In S233, the terminal performs transmission delay compensation or no transmission delay compensation according to the second instruction information. The transmission delay is used by the terminal to determine the absolute transmission time of the data packet, so that the terminal can determine its own clock and achieve the purpose of synchronization with the clock of the base station. When the second indication information is used to instruct the terminal to perform transmission delay compensation, the terminal can determine the absolute transmission time of the data packet according to the transmission delay, and determine the absolute transmission time corresponding to the data packet according to the absolute transmission time of the data packet The time unit (for example, the above-mentioned first time unit or the second time unit) is determined to determine the time unit (for example, the above-mentioned first time unit or the second time unit) that needs to be adjusted. Then the boundary of the first time unit or the second time unit is adjusted forward or backward in the time domain, so that the time domain resources occupied by the data packet completely fall within the first time unit after the adjusted boundary or adjusted In the second time unit after the back boundary.

The method provided in this application instructs the terminal whether to perform transmission delay compensation, so that the terminal can determine its own clock to achieve the goal of synchronization with the clock of the network device. It can make the network equipment and the terminal have the same understanding of the same absolute time, improve the accuracy of the absolute transmission time of the data packet determined by the terminal, and further ensure the accuracy of determining the time unit that needs to be adjusted. The normal transmission of data.

Optionally, the processes shown in FIG. 5 and FIG. 6 may also include S232 and S233.

In some examples of the present application, taking FIG. 9 as an example, on the basis of the method steps shown in FIG. 8, the method 200 further includes S234 and S235.

S234: The network device sends an absolute time to the terminal, where the absolute time corresponds to the first time unit or the second time unit, and the absolute time is used for the transmission delay compensation.

S235. The terminal performs the transmission delay compensation according to the second indication information and the absolute time, where the second indication information is used to instruct to perform the transmission delay compensation.

For the description of S210, S220, S232, and S233 shown in FIG. 9, reference may be made to the foregoing description of S210, S220, S232, and S233. For brevity, details are not repeated here.

In S234, in order to make the network device and the terminal have the same understanding of a certain absolute time, the network device may send the absolute time to the terminal, and the absolute time corresponds to the first time unit or the second time unit. The absolute time is used for the transmission delay compensation. In S235, when the second indication information instructs the terminal to perform transmission delay compensation, the terminal may perform transmission delay compensation according to the absolute time. After receiving the absolute time, the terminal determines the time corresponding to the time when the time unit corresponding to the absolute time is received, and the terminal uses the above-mentioned "whether to perform transmission delay compensation" instruction when determining. The absolute time is equivalent to a time reference point or time calibration point. The terminal and the network device can compensate for the transmission delay of the absolute time, so that the terminal and the network device have the same understanding of the absolute time. Therefore, after the absolute time or starting from the absolute time, the terminal and the network device have the same or aligned understanding of the absolute time. By using absolute time for transmission delay compensation, the accuracy of transmission delay compensation can be improved, which is more flexible and easy to implement.

Optionally, the terminal may acquire a timing advance (TA), and TA is used for time synchronization between the terminal and the network device. The terminal can determine the transmission delay according to the TA, and further, the terminal can perform transmission delay compensation according to the transmission delay and the absolute time. Alternatively, the network device may also notify the terminal of the compensation time, and after receiving the compensation time, the terminal performs transmission delay compensation according to the compensation time and the absolute time.

Optionally, the network device may send the TA value to the terminal by carrying a timing advance command (timing advance command, TAC) field in a media access control random access response (MAC RAR) signal. Optionally, the network device may also notify the terminal of the TA value adjustment amount through a MAC control element (MAC control element, MAC CE).

Since the terminal cannot measure the TA by itself, it needs to measure it together with the network equipment, and errors will be introduced during the TA measurement. For example, when the distance between the network device and the terminal is greater than 200 meters, the measured transmission delay is beneficial to time synchronization. In this case, the network device can instruct the terminal to perform transmission delay compensation through the second indication information . When the distance between the network device and the terminal is less than 200 meters, the measured transmission delay error will be large. In this case, the network device can instruct the terminal not to perform transmission delay compensation through the second indication information.

It should be understood that the above description only uses the TA value for time delay compensation as an example. If the terminal uses methods other than TA for delay compensation, and the accuracy of the delay compensation is different from the accuracy of the TA compensation, the network equipment has different judgment criteria for whether to perform transmission delay compensation. For example, if the accuracy of delay compensation using other methods is higher than that of the TA method, the network device can instruct the terminal to perform transmission delay compensation when the distance between the network device and the terminal is greater than 100 meters, and when the distance is less than 100 meters The terminal does not perform transmission delay compensation. The above-mentioned 100 meters is only an exemplary description, and should not cause any limitation to this application.

If the second indication information indicates that the transmission delay compensation is not to be performed, the terminal receives the absolute time sent by the network device. The time unit (first time or second time unit) corresponding to the absolute time of the data packet transmission will be determined directly based on the TA value and the absolute time, and then the boundary of the first time unit or the second time unit is moved forward in the time domain Or adjust backward so that the time domain resources occupied by the data packet completely fall within the first time unit after the adjusted boundary or the second time unit after the adjusted boundary.

It should also be understood that, in this embodiment of the present application, in S234, the absolute time sent by the network device to the terminal may not correspond to the first time unit or the second time unit. That is, the absolute time sent by the network device to the terminal may not be the absolute sending time of the data packet. The absolute time may also correspond to other time units except the first time unit or the second time unit; for example, the absolute time sent by the network device to the terminal may be earlier than the first time unit or the absolute time corresponding to the second time unit. Time, the time unit corresponding to the absolute time may be earlier than the first time unit or the second time unit in the time domain. After receiving the absolute time, the terminal determines the time corresponding to the time when the time unit corresponding to the absolute time is received, and the terminal uses the above-mentioned "whether to perform transmission delay compensation" instruction when determining.

The following is an explanation with specific examples,

Assuming that the data packet will start to be sent at the time of 320ms506.5us at 14:34:45 on January 25, 2019, it needs to be the time corresponding to the time of 320ms506.5us at 14:34:45 on January 25, 2019 The unit is adjusted forward or backward, and the time unit corresponding to the time at 14:34:45 on January 25, 2019, 320ms506.5us is the first time unit or the second time unit. Assuming that the time of 320ms506.5us at 14:34:45 on January 25, 2019 corresponds to the 8th subframe of the 38th radio frame, that is, the 8th subframe of the 38th radio frame is the first time unit or the second time unit . The network device can notify the terminal at a certain time before the 38th wireless frame, for example, on the 34th wireless frame: The absolute time corresponding to the end of the 7th subframe of the 38th wireless frame is January 25, 2019 14 Hour 34 minutes 44 seconds 220 ms, "January 25, 2019 14: 34 minutes 44 seconds 220 ms" can be understood as the absolute time sent by the network device to the terminal. After receiving the information, the terminal waits until the end of the No. 7 subframe of the No. 38 radio frame. It is considered that the end time is 220ms at 14:34:44 on January 25, 2019. The absolute time corresponding to the end of the subframe is considered to be 220ms at 14:34:44 on January 25, 2019. From this moment on, after 1100ms506.5us, it is 320ms506.5us at 14:34:45 on January 25, 2019. The terminal determines the 320ms506.5us at 14:34:45 on January 25, 2019. After the moment, the boundary of the subframe corresponding to this moment is adjusted forward or backward. In the above process, the network device notifies the terminal that "the time at the end of the No. 7 subframe of the No. 38 radio frame is at 14:34:44 on January 25, 2019, and 220ms." There will be a transmission delay in the process. As a result, the "end of subframe number 7 of radio frame No. 38" considered by the network device is different from the "end of subframe number 7 of radio frame No. 38" considered by the terminal. The difference between the "end time of the 7th subframe of the No. 38 radio frame" considered by the network device and the "end point of the 7th subframe of the No. 38 radio frame" considered by the terminal is the transmission delay. When the network device instructs the terminal to compensate for the transmission delay, the terminal can use the TA to compensate for the transmission delay. Specifically, the terminal calculates the transmission delay through TA, calculates the length of the transmission delay forward at the time it thinks "the end of the 7th subframe of radio frame No. 38", and considers this time as the "network The time corresponding to the end of the No. 7 subframe of the No. 38 radio frame considered by the device", so that the time considered by the network device and the terminal is consistent. Optionally, the terminal may also compensate for the transmission delay through compensation time, and the compensation time may be notified to the terminal by the network device.

The method for adjusting the time domain resource boundary provided by the present application instructs the terminal whether to perform transmission delay compensation through the network device, so that the terminal and the network device have the same understanding of the absolute transmission time of the data packet. It is ensured that the time unit corresponding to the absolute sending time of the data packet determined by the network device and the terminal is consistent, and the accuracy of the adjustment of the time unit boundary is ensured, which further ensures the reliability of data transmission.

The present application also provides a method for delay compensation, which can be applied in the scenario shown in FIG. 2 and can also be applied in other scenarios requiring transmission delay compensation. As shown in FIG. 10, the method 300 shown in FIG. 10 may include step S310 to step S320. The steps in the method 300 are described in detail below with reference to FIG. 10. The method 300 includes:

S310: The network device sends third indication information to the terminal, where the third indication information is used to indicate whether to perform transmission delay compensation. Correspondingly, the terminal receives the third indication information.

S320: When the third indication information indicates to perform transmission delay compensation, the terminal performs transmission delay compensation; or, when the third indication information indicates not to perform transmission delay compensation, the terminal does not perform transmission delay compensation.

Specifically, the transmission of information or data between the network device and the terminal requires time (there is a transmission delay). In this case, the network device and the terminal may have inconsistent understanding of a certain absolute time. Therefore, the network device may send third indication information to the terminal, where the third indication information is used to indicate whether to perform transmission delay compensation. After receiving the third instruction information, the terminal performs transmission delay compensation or no transmission delay compensation according to the content indicated by the third instruction information.

In the method for delay compensation provided in this application, when the terminal is required to perform delay compensation, the network device may instruct the terminal to perform delay compensation, and when the terminal is not required to perform delay compensation, the network device may instruct the terminal not to perform delay compensation. This allows the terminal to determine its own clock and achieve the purpose of synchronization with the clock of the network device.

It is possible to make the terminal and the network device have the same understanding of the same moment. When the terminal and the network device communicate at this moment, the reliability of data transmission between the terminal and the network device is improved.

In some examples of the present application, taking FIG. 11 as an example, on the basis of the method steps shown in FIG. 10, the method 300 further includes S311.

S311: The network device sends an absolute time to the terminal, where the absolute time corresponds to a boundary of a time unit. Correspondingly, the terminal receives the absolute time.

In the foregoing S320: when the third indication information is used to instruct transmission delay compensation, the terminal performs transmission delay compensation, including:

S321: The terminal performs the transmission delay compensation according to the absolute time.

For the description of S310 shown in FIG. 11, reference may be made to the foregoing description of S310, and for brevity, details are not repeated here.

In S311, when the third indication information is used to instruct transmission delay compensation, the network device may send an absolute time to the terminal, and the absolute time corresponds to a boundary of a time unit. The time unit may be a radio frame, subframe, time slot, or symbol. In S321, the terminal may perform the transmission delay compensation according to the absolute time. The absolute time is equivalent to a time reference point or time calibration point. The absolute time is used by the terminal to determine the moment of the time unit corresponding to the absolute time. After receiving the absolute time, the terminal determines the time corresponding to the time when the time unit corresponding to the absolute time is received, and the terminal uses the above-mentioned "whether to perform transmission delay compensation" instruction when determining. The terminal can compensate the transmission delay for the absolute time, so that the terminal and the network device have the same understanding of the absolute time. Therefore, after the absolute time or starting from the absolute time, the terminal and the network device have a consistent or aligned understanding of the time. It is easy to realize and can improve the accuracy of transmission delay compensation.

In some examples of the present application, taking FIG. 12 as an example, on the basis of the method steps shown in FIG. 11, the method 300 further includes S312.

S312: The network device sends the compensation time to the terminal. Correspondingly, the terminal receives the compensation.

In the foregoing S321: the terminal performs the transmission delay compensation according to the absolute time, including:

S321: The terminal performs the transmission delay compensation according to the absolute time and the compensation time.

For the description of S310 and S311 shown in FIG. 12, reference may be made to the foregoing description of S310 and S311. For brevity, details are not repeated here.

In S312, the network device may send a compensation time to the terminal, and the compensation time is used for the terminal to compensate for the transmission delay. The compensation time can be understood as the transmission delay. In S321, the terminal performs the transmission delay compensation according to the absolute time and the compensation time. For example, the terminal may calculate the length of the compensation time forward from the moment when the absolute time is received to determine a moment, which is regarded as the moment corresponding to the time unit corresponding to the absolute time considered by the network device. This realizes that the terminal and the network equipment have the same understanding of the absolute time. It is easy to realize and can improve the accuracy of transmission delay compensation.

In some examples of the present application, taking FIG. 13 as an example, on the basis of the method steps shown in FIG. 11, the method 300 further includes S313.

S313: The terminal obtains the timing advance TA command, where the TA command is used to adjust the TA value.

The terminal performs the transmission delay compensation according to the absolute time and the TA value.

For the description of S310 and S311 shown in FIG. 13, reference may be made to the foregoing description of S310 and S311. For brevity, details are not repeated here.

In S313, the terminal may also obtain the TA command to determine the TA value. The TA value is used for time synchronization between the terminal and the network device. The terminal can determine the transmission delay based on the TA. In S321, the terminal may perform the transmission delay compensation according to the absolute time and the TA value. The transmission delay compensation is performed by using TA and the absolute time. For example, the terminal may calculate the length of time indicated by TA from the moment of receiving the absolute time or determine the length of transmission delay time according to TA, thereby determining a moment, which is regarded as the absolute time considered by the network device. The time corresponding to the time unit corresponding to the time. This realizes that the terminal and the network equipment have the same understanding of the absolute time. Easy to implement.

In some possible implementation manners of the present application, when the third indication information is used to indicate that no transmission delay compensation is to be performed, the terminal may obtain the timing advance TA command, which is used to adjust the TA value. And according to the TA value for uplink transmission. That is, the terminal only performs uplink transmission according to the TA value, and does not need to perform transmission delay compensation.

Optionally, when the distance between the network device and the terminal is greater than 200 meters, the measured transmission delay is beneficial to time synchronization. In this case, the network device can instruct the terminal to perform transmission through the third indication information. Delay compensation. When the distance between the network device and the terminal is less than 200 meters, the measured transmission delay error will be large. In this case, the network device can instruct the terminal not to perform transmission delay compensation through the third indication information.

It should be understood that the above description only uses the TA value for time delay compensation as an example. If the terminal uses methods other than TA for delay compensation, and the accuracy of the delay compensation is different from the accuracy of the TA compensation, the network equipment has different judgment criteria for whether to perform transmission delay compensation. For example, if the accuracy of delay compensation using other methods is higher than that of the TA method, the network device can instruct the terminal to perform transmission delay compensation when the distance between the network device and the terminal is greater than 100 meters, and instruct the terminal when the distance is less than 100 meters. No transmission delay compensation is performed. The above-mentioned 100 meters is only an exemplary description, and should not cause any restriction on this application.

It should be understood that, in the various embodiments of the present application, the first information, first indication information, second indication information, or third indication information sent by the network device to the terminal may be used by the network device to send high-level signaling or physical layer signaling to the terminal. Or a dedicated configuration information implementation. The high-level signaling may include, for example, radio resource control (radio resource control, RRC), medium access control (medium access control, MAC) control element (CE), and radio link control (radio link control, RLC). Signaling, etc., the physical layer signaling may be, for example, downlink control information (DCI).

It should also be understood that in each embodiment of the present application, the first, the second, etc. are only used to indicate that multiple objects are different. For example, the first time unit and the second time unit are only to indicate different time units. It should not have any influence on the time unit itself, and the above-mentioned first, second, etc. should not cause any limitation to the embodiments of the present application.

It should also be understood that the methods, situations, categories, and embodiments in the embodiments of the present application are only for the convenience of description, and should not constitute special limitations. The various methods, categories, situations, and features in the embodiments are not contradictory. The circumstances can be combined.

It should also be understood that the various numerical numbers involved in the embodiments of the present application are only for easy distinction for description, and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of the foregoing processes does not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

It should also be understood that the foregoing is only to help those skilled in the art to better understand the embodiments of the present application, and is not intended to limit the scope of the embodiments of the present application. Those skilled in the art can obviously make various equivalent modifications or changes based on the above examples given. For example, some steps in the above method 200 and method 300 may not be necessary, or some new steps may be added. . Or a combination of any two or any of the above embodiments. Such a modified, changed or combined solution also falls within the scope of the embodiments of the present application.

It should also be understood that the above description of the embodiments of the present application focuses on emphasizing the differences between the various embodiments, and the same or similarities that are not mentioned can be referred to each other. For the sake of brevity, details are not repeated here.

It should also be understood that in the embodiments of the present application, "pre-defined" can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate related information in devices (for example, including terminals and network devices). The specific implementation method is not limited.

The method for adjusting the time domain resource boundary of the embodiment of the present application has been described in detail above with reference to FIGS. 1 to 13. Hereinafter, the communication device of the embodiment of the present application will be described in detail with reference to FIG. 14 to FIG. 18.

14 shows a schematic block diagram of a communication device 400 according to an embodiment of the present application. The device 400 may correspond to the network device described in the above method 200, or may be a chip or component applied to the network device, and the device 400 Each module or unit is respectively used to execute each action or processing procedure performed by the network device in the above method 200. As shown in FIG. 14, the communication device 400 may include: a processing unit 410 and a communication unit 420.

The processing unit 410 is configured to determine a time domain resource occupied by a data packet, where the time domain resource occupied by the data packet spans the first time unit and the second time unit.

The processing unit 410 is further configured to: adjust the boundary of the first time unit and/or the boundary of the second time unit, so that the communication unit 420 sends or receives the data packet within the adjusted first time, or causes The communication unit 420 sends or receives the data packet in the adjusted second time unit.

The communication device provided by the present application adjusts the boundary between two time domain resources so that the time domain resources occupied by the data packet does not cross the time domain resource boundary, and reduces the data transmission delay requirement on the basis of ensuring the data transmission delay. The resource overhead of packet transmission improves communication efficiency.

Optionally, in some possible implementation manners of the present application, the processing unit 410 is specifically configured to: adjust the boundary of the first time unit forward or backward in the time domain; and/or, adjust the second time unit The boundary of the time unit is adjusted forward or backward in the time domain.

Optionally, in some possible implementation manners of the present application, the communication unit 420 is further configured to send first information, which is used to adjust the boundary of the first time unit and/or the second time unit Boundary, the first information includes: the time domain position of the first time unit, and/or the time domain position of the second time unit.

Optionally, in some possible implementation manners of this application, the first information further includes:

The adjustment amount of the boundary of the first time unit or the time domain position of the boundary of the first time unit after adjustment; and/or the adjustment amount of the boundary of the second time unit or the adjustment of the boundary of the second time unit after adjustment Time domain location.

Optionally, in some possible implementation manners of the present application, the first information further includes: a period of boundary adjustment of the first time unit, and/or a period of boundary adjustment of the second time unit.

Optionally, in some possible implementation manners of the present application, the first information further includes first indication information, and the first indication information is used to indicate adjustment of the boundary of the first time unit and/or the first time unit. The adjustment of the boundary of the two time units is applicable to uplink transmission, or to downlink transmission, or to uplink transmission and downlink transmission.

Optionally, in some possible implementation manners of the present application, the communication unit 420 is further configured to: send second indication information, where the second indication information is used to instruct to perform transmission delay compensation, or to indicate when transmission is not performed. Delay compensation. The transmission delay is used to determine the absolute transmission time of the data packet.

Optionally, in some possible implementations of the present application, the communication unit 420 is further configured to: send an absolute time, the absolute time corresponding to the first time unit or the second time unit, and the absolute time is used for the transmission time Delay compensation.

Optionally, in some possible implementation manners of the present application, the adjusted boundary of the first time unit is the same as the boundary of the time domain resource occupied by the data packet, and/or, the adjusted second The boundary of the time unit is the same as the boundary of the time domain resource occupied by the data packet.

Optionally, in some possible implementation manners of the present application, the first time unit is a radio frame, subframe, time slot or symbol; and/or, the second time unit is a radio frame, subframe, time slot Or symbol.

It should be understood that, for the specific process of each unit in the device 400 performing the above-mentioned corresponding steps, please refer to the foregoing in conjunction with the embodiments shown in FIG. 3, FIG. 5, FIG. 6, FIG. 8 and FIG. For the sake of brevity, I won’t repeat it here.

Optionally, the communication unit 420 may include a receiving unit (module) and a sending unit (module), which are used to execute various embodiments of the aforementioned method 200 and method 300, as well as those shown in FIGS. 3, 5, 6, and 8 to 13. In the illustrated embodiment, the network device receives information and sends information. Optionally, the communication device 400 may further include a storage unit 430 for storing instructions executed by the processing unit 410 and the communication unit 420. The processing unit 410, the communication unit 420, and the storage unit 430 are in communication connection. The storage unit 430 stores instructions. The processing unit 410 is used to execute the instructions stored in the storage unit 430. The communication unit 420 is used to perform specific signal transceiving under the driving of the processing unit 410. .

It should be understood that the communication unit 420 may be a transceiver, an input/output interface, or an interface circuit. The storage unit 430 may be a memory. The processing unit 410 may be implemented by a processor.

The communication device 400 shown in FIG. 14 can implement the various embodiments of the aforementioned method 200 and method 300 and the steps performed by the network device in the embodiments shown in FIG. 3, FIG. 5, FIG. 6, and FIG. 8 to FIG. For similar description, please refer to the description in the corresponding method. To avoid repetition, I won’t repeat them here.

It should also be understood that the communication apparatus 400 shown in FIG. 14 may be a network device.

FIG. 15 shows a schematic block diagram of a communication device 500 according to an embodiment of the present application. The device 500 may correspond to the terminal described in the above method 200, or may be a chip or component applied to the terminal, and each module in the device 500 The or units are respectively used to execute various actions or processing procedures performed by the terminal in the above method 200. As shown in FIG. 15, the communication device 500 may include: a communication unit 510 and a processing unit 520.

The communication unit 510 is configured to receive first information, and the first information is used to adjust the boundary of the first time unit and/or the boundary of the second time unit, where the first information includes: The time domain location, and/or the time domain location of the second time unit, the time domain resources occupied by the data packet span the first time unit and the second time unit.

The processing unit 520 is further configured to determine the boundary of the first time unit and/or the boundary of the second time unit after adjustment according to the first information, wherein the data packet is sent within the adjusted first time or Receiving, or the data packet is sent or received within the adjusted second time unit.

The communication device provided in the present application adjusts the boundary of the two time domain resources when the time domain resource occupied by the data packet crosses the boundary of two time domain resources (the first time unit and the second time unit), The time domain resource occupied by the data packet does not cross the time domain resource boundary. On the basis of ensuring the data transmission delay requirement, the resource overhead of the data packet transmission is reduced and the communication efficiency is improved.

Optionally, in some possible implementations of the present application, the processing unit 520 is specifically configured to: adjust the boundary of the first time unit forward or backward in the time domain according to the first information; and/ Or, according to the first information, the boundary of the second time unit is adjusted forward or backward in the time domain.

Optionally, in some possible implementation manners of the present application, the communication unit 510 is further configured to: receive second indication information, where the second indication information is used to instruct to perform transmission delay compensation, or to indicate when transmission is not performed. Delay compensation. The transmission delay is used to determine the absolute transmission time of the data packet. The processing unit 520 is further configured to: perform transmission delay compensation or not perform transmission delay compensation according to the second indication information.

Optionally, in some possible implementations of the present application, the communication unit 510 is further configured to: receive an absolute time, the absolute time corresponding to the first time unit or the second time unit, and the absolute time is used for the transmission time Delay compensation. The processing unit 520 is further configured to: perform the transmission delay compensation according to the second indication information and the absolute time, where the second indication information is used to instruct to perform the transmission delay compensation.

It should be understood that, for the specific process of each unit in the device 500 performing the above corresponding steps, please refer to the embodiments shown in the foregoing in conjunction with FIGS. 3, 5, 6, and 8 to 13 and related embodiments in the method 200 and the method 300. For brevity, the descriptions related to the terminal will not be repeated here.

Optionally, the communication unit 510 may include a receiving unit (module) and a sending unit (module), which are used to execute the various embodiments of the aforementioned method 200 and method 300, as well as those shown in FIGS. 3, 5, 6, and 8 to 13. In the illustrated embodiment, the terminal receives information and sends information. Optionally, the communication device 500 may further include a storage unit 530 for storing instructions executed by the processing unit 520 and the communication unit 510. The processing unit 520, the communication unit 510, and the storage unit 530 are in communication connection. The storage unit 530 stores instructions. The processing unit 520 is used to execute the instructions stored in the storage unit 530. The communication unit 510 is used to perform specific signal transmission and reception under the driving of the processing unit 520. .

It should be understood that the communication unit 510 may be a transceiver, an input/output interface, or an interface circuit. The storage unit 530 may be a memory. The processing unit 520 may be implemented by a processor.

The communication device 500 shown in FIG. 15 may be a terminal.

It should be understood that the division of the units in the above device is only a division of logical functions, and may be fully or partially integrated into one physical entity in actual implementation, or may be physically separated. In addition, the units in the device can all be implemented in the form of software called by processing elements; they can also be implemented in the form of hardware; part of the units can be implemented in the form of software called by the processing elements, and some of the units can be implemented in the form of hardware. For example, each unit can be a separately established processing element, or it can be integrated in a certain chip of the device for implementation. In addition, it can also be stored in the memory in the form of a program, which is called and executed by a certain processing element of the device. Features. In addition, all or part of these units can be integrated together or implemented independently. The processing element here can also become a processor, which can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above units may be implemented by an integrated logic circuit of hardware in a processor element or implemented in a form of being called by software through a processing element.

In an example, the unit in any of the above devices may be one or more integrated circuits configured to implement the above methods, for example: one or more application specific integrated circuits (ASIC), or, one or Multiple microprocessors (digital singnal processors, DSPs), or, one or more field programmable gate arrays (Field Programmable Gate Arrays, FPGAs), or a combination of at least two of these integrated circuits. For another example, when the unit in the device can be implemented in the form of a processing element scheduler, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processors that can call programs. For another example, these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).

The above receiving unit is an interface circuit of the device for receiving signals from other devices. For example, when the device is implemented as a chip, the receiving unit is an interface circuit used by the chip to receive signals from other chips or devices. The above unit for sending is an interface circuit of the device for sending signals to other devices. For example, when the device is implemented as a chip, the sending unit is an interface circuit used by the chip to send signals to other chips or devices.

FIG. 16 is a schematic structural diagram of a network device provided by an embodiment of this application. Used to implement the operation of the network device in the above embodiment. As shown in FIG. 16, the network equipment includes an antenna 601, a radio frequency device 602, and a baseband device 603. The antenna 601 is connected to the radio frequency device 602. In the uplink direction, the radio frequency device 602 receives the information sent by the terminal through the antenna 601, and sends the information sent by the terminal to the baseband device 603 for processing. In the downlink direction, the baseband device 603 processes the terminal information and sends it to the radio frequency device 602, and the radio frequency device 602 processes the terminal information and sends it to the terminal via the antenna 601.

The baseband device 603 may include one or more processing elements 6031, for example, a main control CPU and other integrated circuits. In addition, the baseband device 603 may also include a storage element 6032 and an interface 6033. The storage element 6032 is used to store programs and data; the interface 6033 is used to exchange information with the radio frequency device 602. The interface is, for example, a common public radio interface. , CPRI). The above apparatus for network equipment may be located in the baseband apparatus 603. For example, the above apparatus for network equipment may be a chip on the baseband apparatus 603. The chip includes at least one processing element and an interface circuit, wherein the processing element is used to execute the above network For each step of any method executed by the device, the interface circuit is used to communicate with other devices. In one implementation, the unit for the network device to implement each step in the above method can be implemented in the form of a processing element scheduler. For example, the device for the network device includes a processing element and a storage element, and the processing element calls the program stored by the storage element to Perform the method performed by the network device in the above method embodiment. The storage element may be a storage element with the processing element on the same chip, that is, an on-chip storage element, or a storage element on a different chip from the processing element, that is, an off-chip storage element.

In another implementation, the unit of the network device that implements each step in the above method may be configured as one or more processing elements, and these processing elements are provided on the baseband device. The processing elements here may be integrated circuits, such as one Or multiple ASICs, or, one or more DSPs, or, one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form a chip.

The units for the network equipment to implement each step in the above method can be integrated together and implemented in the form of a system-on-a-chip (SOC). For example, the baseband device includes the SOC chip for implementing the above method. At least one processing element and storage element can be integrated in the chip, and the processing element can call the stored program of the storage element to implement the method executed by the above network device; or, at least one integrated circuit can be integrated in the chip to implement the above network The method executed by the device; or, it can be combined with the above implementations. The functions of some units are implemented in the form of processing elements calling programs, and the functions of some units are implemented in the form of integrated circuits.

It can be seen that the above apparatus for a network device may include at least one processing element and an interface circuit, wherein at least one processing element is used to execute any method executed by the network device provided in the above method embodiments. The processing element can execute part or all of the steps executed by the network device in the first way: calling the program stored in the storage element; or in the second way: combining instructions through the integrated logic circuit of the hardware in the processor element Part or all of the steps performed by the network device are executed in the method; of course, part or all of the steps executed by the network device can be executed in combination with the first method and the second method.

The processing element here is the same as the above description, and may be a general-purpose processor, such as a CPU, or one or more integrated circuits configured to implement the above method, such as: one or more ASICs, or, one or more micro-processing DSP, or, one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms.

The storage element can be a memory or a collective term for multiple storage elements.

FIG. 17 is a schematic structural diagram of another network device provided by an embodiment of this application. It may be the network device in the above embodiment, and is used to implement the operation of the network device in the above embodiment.

As shown in FIG. 17, the network device includes: a processor 710, a memory 720, and an interface 730, and the processor 710, the memory 720, and the interface 730 are in signal connection.

The foregoing apparatus 400 may be located in the network device, and the functions of each unit may be implemented by the processor 710 calling a program stored in the memory 720. That is, the above... device includes a memory and a processor, and the memory is used to store a program, which is called by the processor to execute the method in the above method embodiment. The processor here may be an integrated circuit with signal processing capability, such as a CPU. Or the functions of the above units can be realized by one or more integrated circuits configured to implement the above methods. For example: one or more ASICs, or, one or more microprocessors DSP, or, one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms. Or, the above implementations can be combined.

FIG. 18 is a schematic structural diagram of a terminal provided by an embodiment of the application. It may be the terminal in the above embodiment, and is used to implement the operation of the terminal in the above embodiment. As shown in FIG. 18, the terminal includes: an antenna 810, a radio frequency part 820, and a signal processing part 830. The antenna 810 is connected to the radio frequency part 820. In the downlink direction, the radio frequency part 820 receives the information sent by the network device through the antenna 810, and sends the information sent by the network device to the signal processing part 830 for processing. In the upstream direction, the signal processing part 830 processes the terminal information and sends it to the radio frequency part 820, and the radio frequency part 820 processes the terminal information and sends it to the network device via the antenna 810.

The signal processing part 830 may include a modem subsystem, which is used to process the various communication protocol layers of the data; it may also include a central processing subsystem, which is used to process the terminal operating system and application layer; in addition, it may also include Other subsystems, such as multimedia subsystem, peripheral subsystem, etc., where the multimedia subsystem is used to control the terminal camera, screen display, etc., and the peripheral subsystem is used to realize the connection with other devices. The modem subsystem can be a separate chip. Optionally, the above apparatus for the terminal may be located in the modem subsystem.

The modem subsystem may include one or more processing elements 831, for example, including a main control CPU and other integrated circuits. In addition, the modem subsystem may also include a storage element 832 and an interface circuit 833. The storage element 832 is used to store data and programs, but the program used to execute the method executed by the terminal in the above method may not be stored in the storage element 832, but is stored in a memory outside the modem subsystem. When the modem subsystem is loaded and used. The interface circuit 333 is used to communicate with other subsystems. The above device for the terminal may be located in the modem subsystem, the modem subsystem may be implemented by a chip, the chip includes at least one processing element and an interface circuit, wherein the processing element is used to execute any of the methods executed by the above terminal In each step, the interface circuit is used to communicate with other devices. In one implementation, the unit for the terminal to implement each step in the above method can be implemented in the form of a processing element scheduler. For example, the device for the terminal includes a processing element and a storage element, and the processing element calls the program stored by the storage element to execute the above The method executed by the terminal in the method embodiment. The storage element may be a storage element whose processing element is on the same chip, that is, an on-chip storage element.

In another implementation, the program for executing the method executed by the terminal in the above method may be a storage element on a different chip from the processing element, that is, an off-chip storage element. At this time, the processing element calls or loads the program from the off-chip storage element on the on-chip storage element to call and execute the method executed by the terminal in the above method embodiment.

In yet another implementation, the unit for the terminal to implement each step in the above method may be configured as one or more processing elements, and these processing elements are arranged on the modem subsystem, where the processing elements may be integrated circuits, such as : One or more ASICs, or, one or more DSPs, or, one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form a chip.

The units of the terminal that implement the steps in the above method can be integrated together and implemented in the form of a system-on-a-chip (SOC), and the SOC chip is used to implement the above method. At least one processing element and a storage element can be integrated in the chip, and the above terminal execution method can be realized by the processing element calling the stored program of the storage element; or, at least one integrated circuit can be integrated in the chip for realizing the above terminal execution Or, can be combined with the above implementations, the functions of some units are implemented in the form of processing element calling programs, and the functions of some units are implemented in the form of integrated circuits.

It can be seen that the above apparatus for a terminal may include at least one processing element and an interface circuit, wherein at least one processing element is used to execute any of the methods performed by the terminal provided in the above method embodiments. The processing element can execute part or all of the steps executed by the terminal in the first way: calling the program stored in the storage element; or in the second way: combining instructions through the integrated logic circuit of the hardware in the processor element Part or all of the steps executed by the terminal are executed in a manner; of course, part or all of the steps executed by the terminal may also be executed in combination with the first manner and the second manner.

An embodiment of the present application also provides a communication system, which includes: the foregoing terminal and the foregoing network device.

The embodiment of the present application also provides a computer-readable medium for storing computer program code, and the computer program includes instructions for executing the method for adjusting the boundary of time domain resources in the foregoing method 200 and method 300 of the embodiment of the present application. The readable medium may be read-only memory (ROM) or random access memory (RAM), which is not limited in the embodiment of the present application.

The present application also provides a computer program product, the computer program product including instructions, when the instructions are executed, so that the terminal and the network device perform operations of the terminal and the network device corresponding to the above method.

The embodiment of the present application also provides a system chip. The system chip includes a processing unit and a communication unit. The processing unit may be, for example, a processor, and the communication unit may be, for example, an input/output interface, a pin, or a circuit. The processing unit can execute computer instructions so that the chip in the communication device executes any of the methods for adjusting the boundary of time domain resources provided in the foregoing embodiments of the present application.

Optionally, the computer instructions are stored in a storage unit.

Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit can also be a storage unit in the terminal located outside the chip, such as ROM or other storage units that can store static information and instructions. Types of static storage devices, RAM, etc. Wherein, the processor mentioned in any of the above may be a CPU, a microprocessor, an ASIC, or one or more integrated circuits used to control the program execution of the method for adjusting the time domain resource boundary. The processing unit and the storage unit can be decoupled, respectively set on different physical devices, and connected in a wired or wireless manner to realize the respective functions of the processing unit and the storage unit, so as to support the system chip to implement the above-mentioned embodiments Various functions in. Alternatively, the processing unit and the memory may also be coupled to the same device.

It can be understood that the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory may be 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 RAM, which acts as an external cache. There are many different types of RAM, such as 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), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access Access memory (direct rambus RAM, DR RAM).

The terms "system" and "network" in this article are often used interchangeably in this article. The term "and/or" in this article is only an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations. In addition, the character "/" in this text generally indicates that the associated objects before and after are in an "or" relationship.

The terms "uplink" and "downlink" appearing in this application are used to describe the direction of data/information transmission in a specific scenario. For example, the "uplink" direction generally refers to the direction or distribution of data/information from the terminal to the network side. The direction of transmission from the centralized unit to the centralized unit. The "downlink" direction generally refers to the direction in which data/information is transmitted from the network side to the terminal, or the direction from the centralized unit to the distributed unit. It can be understood that "uplink" and "downlink" "It is only used to describe the direction of data/information transmission. The specific start and end equipment of the data/information transmission is not limited.

In this application, various objects such as various messages/information/equipment/network elements/systems/devices/actions/operations/processes/concepts that may appear are assigned names. It is understandable that these specific names are not It constitutes a limitation on related objects, and the assigned name can be changed according to factors such as the scene, context or usage habits. The understanding of the technical meaning of the technical terms in this application should mainly be based on the function embodied/performed in the technical solution And technical effects to determine.

In the various embodiments of this application, if there is no special description and logical conflict, the terms and/or descriptions between different embodiments are consistent and can be mutually cited. The technical features in different embodiments are based on their inherent Logical relationships can be combined to form new embodiments.

The methods in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer programs or instructions. When the computer program or instruction is loaded and executed on the computer, the process or function of the embodiment of the present application is executed in whole or in part. The computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices. The computer program or instruction can be stored in a computer-readable storage medium or transmitted through the computer-readable storage medium. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server integrated with one or more available media.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

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

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A method for adjusting the boundary of time domain resources, characterized in that it includes:

Determining the time domain resource occupied by the data packet, wherein the time domain resource occupied by the data packet spans the first time unit and the second time unit;

The boundary of the first time unit and/or the boundary of the second time unit are adjusted so that the data packet is sent or received within the adjusted first time, or the data packet is adjusted Sent or received within the second time unit.
The method according to claim 1, wherein the adjusting the boundary of the first time unit and/or the boundary of the second time unit comprises:

Adjust the boundary of the first time unit forward or backward in the time domain; and/or,

The boundary of the second time unit is adjusted forward or backward in the time domain.
The method according to claim 1 or 2, wherein the method further comprises:

Send first information, where the first information is used to adjust the boundary of the first time unit and/or the boundary of the second time unit, and the first information includes:

The time domain position of the first time unit, and/or the time domain position of the second time unit.
The method according to claim 3, wherein the first information further comprises:

The adjustment amount of the boundary of the first time unit or the time domain position of the boundary of the first time unit after adjustment; and/or,

The adjustment amount of the boundary of the second time unit or the time domain position of the boundary of the second time unit after adjustment.
The method according to claim 3 or 4, wherein the first information further comprises:

The period of the boundary adjustment of the first time unit, and/or,

The period of the boundary adjustment of the second time unit.
The method according to any one of claims 3 to 5, wherein the first information further comprises first indication information, and the first indication information is used to indicate the boundary of the first time unit. The adjustment and/or the adjustment of the second time unit boundary is applicable to uplink transmission, or applicable to downlink transmission, or applicable to uplink transmission and downlink transmission.
The method according to any one of claims 1 to 6, wherein the method further comprises:

Sending second indication information, where the second indication information is used to indicate transmission delay compensation or not to perform transmission delay compensation, and the transmission delay is used to determine the absolute transmission time of the data packet.
The method according to claim 7, wherein the method further comprises:

The absolute time is sent, the absolute time corresponds to the first time unit or the second time unit, and the absolute time is used for the transmission delay compensation.
The method according to any one of claims 1 to 8, wherein:

The adjusted boundary of the first time unit is the same as the boundary of the time domain resource occupied by the data packet, and/or, the adjusted boundary of the second time unit is the same as the boundary occupied by the data packet The boundaries of time domain resources are the same.
The method according to any one of claims 1 to 9, wherein the first time unit is a radio frame, subframe, time slot, or symbol; and/or, the second time unit is a radio frame , Subframe, time slot or symbol.
A method for determining and adjusting a time domain resource boundary, characterized in that it includes:

Receive first information, where the first information is used to adjust the boundary of the first time unit and/or the boundary of the second time unit, wherein the first information includes: the time of the first time unit Domain location, and/or the time domain location of the second time unit, and the time domain resource occupied by the data packet spans the first time unit and the second time unit;

Determining the boundary of the first time unit and/or the boundary of the second time unit after adjustment according to the first information, wherein the data packet is sent or received within the first time after adjustment, Or, the data packet is sent or received within the adjusted second time unit.
The method of claim 11, wherein the method further comprises:

According to the first information, adjust the boundary of the first time unit forward or backward in the time domain; and/or,

According to the first information, the boundary of the second time unit is adjusted forward or backward in the time domain.
The method according to claim 11 or 12, wherein the first information further comprises:

The adjustment amount of the boundary of the first time unit or the time domain position of the boundary of the first time unit after adjustment; and/or,

The adjustment amount of the boundary of the second time unit or the time domain position of the boundary of the second time unit after adjustment.
The method according to any one of claims 11 to 13, wherein the first information further comprises:

The period of the boundary adjustment of the first time unit, and/or,

The period of the boundary adjustment of the second time unit.
The method according to any one of claims 11 to 14, wherein the first information further comprises first indication information, and the first indication information is used to indicate the boundary of the first time unit. The adjustment and/or the adjustment of the second time unit boundary is applicable to uplink transmission, or applicable to downlink transmission, or applicable to uplink transmission and downlink transmission.
The method according to any one of claims 11 to 15, wherein the method further comprises:

Receiving second indication information, where the second indication information is used to indicate transmission delay compensation or not to perform transmission delay compensation, and the transmission delay is used to determine the absolute transmission time of the data packet;

According to the second instruction information, perform transmission delay compensation or not perform transmission delay compensation.
The method of claim 16, wherein the method further comprises:

Receiving an absolute time, where the absolute time corresponds to the first time unit or the second time unit, and the absolute time is used for the transmission delay compensation;

Perform the transmission delay compensation according to the second indication information and the absolute time, wherein the second indication information is used to instruct to perform the transmission delay compensation.
The method according to any one of claims 11 to 17, wherein:

The adjusted boundary of the first time unit is the same as the boundary of the time domain resource occupied by the data packet, and/or, the adjusted boundary of the second time unit is the same as the boundary occupied by the data packet The boundaries of time domain resources are the same.
The method according to any one of claims 11 to 18, wherein the first time unit is a radio frame, subframe, time slot, or symbol; and/or, the second time unit is a radio frame , Subframe, time slot or symbol.
A communication device, characterized by comprising a unit for performing each step of the method according to any one of claims 1 to 10.
A communication device characterized by comprising a processor and an interface circuit,

The processor is configured to communicate with the terminal through the interface circuit and execute the method according to any one of claims 1 to 10.
A communication device, characterized by comprising a processor, configured to be connected to a memory, read and execute a program stored in the memory, so as to implement the method according to any one of claims 1 to 10.
A network device, characterized by comprising the device according to any one of claims 20-22.
A communication device, characterized by comprising a unit for executing each step of the method according to any one of claims 11-19.
A communication device characterized by comprising a processor and an interface circuit,

The processor is configured to communicate with the terminal through the interface circuit, and execute the method according to any one of claims 11 to 19.
A communication device, characterized by comprising a processor, configured to be connected to a memory, read and execute a program stored in the memory, so as to implement the method according to any one of claims 11 to 19.
A terminal, characterized by comprising the device according to any one of claims 24 to 26.
A computer-readable medium, characterized by comprising a computer program, which when the computer program runs on a processor, causes the processor to execute the method according to any one of claims 1 to 19.