CN111867087A

CN111867087A - Method and communication device for adjusting time domain resource boundary

Info

Publication number: CN111867087A
Application number: CN201910365314.4A
Authority: CN
Inventors: 黄曲芳; 徐小英
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-10-30
Anticipated expiration: 2039-04-30
Also published as: WO2020221237A1; CN111867087B

Abstract

The application provides a method and a communication device for adjusting time domain resource boundary. 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. And adjusting 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 sent or received within the adjusted second time unit. According to the method, the boundary of the time domain resource is adjusted, so that the time domain resource occupied by the data packet does not cross the time domain resource boundary, the resource overhead of data packet transmission is reduced, and the communication efficiency is improved.

Description

Method and communication device for adjusting time domain resource boundary

Technical Field

The present invention relates to the field of communications, and in particular, to a method and a communications apparatus for adjusting a time domain resource boundary.

Background

The fifth generation (5G) mobile communication system is dedicated to support higher system performance, support multiple traffic types, different deployment scenarios, and a wider spectrum range. The multiple service types include enhanced mobile broadband (eMBB), massive machine type communication (mtc), ultra-reliable and low-latency communication (URLLC), Multimedia Broadcast Multicast Service (MBMS), and positioning service.

The delay and reliability requirements of URLLC service on data transmission are relatively high, and for this reason, 5G communication systems arrange transmission of data packets in time units of shorter time length to meet the requirements of URLLC service on delay. For example, data may be transmitted in a time unit of a symbol. However, when data is transmitted at a shorter time unit granularity, the data packet may be transmitted across the boundary of the sub-frame or the time slot, which seriously reduces the reliability of the data packet transmission.

Disclosure of Invention

The application provides a method for adjusting time domain resource boundaries, which enables time domain resources occupied by a data packet not to cross the time domain resource boundaries by adjusting the time domain resource boundaries, reduces resource overhead of data packet transmission on the basis of ensuring data transmission delay requirements, and improves communication efficiency.

In a first aspect, a method for adjusting time domain resource boundaries is provided, which may be performed by a network device or a chip configured in the network device. The method comprises the following steps: and determining time domain resources occupied by the data packet, wherein the time domain resources occupied by the data packet span the first time unit and the second time unit. And adjusting 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 sent or received within the adjusted second time unit.

In the method for adjusting time domain resources provided by the first aspect, when the time domain resources occupied by the data packet span two time domain resources (the first time unit and the second time unit), the boundary of the two time domain resources (the positions of the two time domain resources on the time axis) is adjusted, so that the time domain resources occupied by the data packet do not span the time domain resource boundary, and 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.

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 forwards or backwards in time domain; and/or adjusting the boundaries of the second time cell forward or backward in time domain. In the 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, the time domain resource boundary occupied by the data packet can be realized without crossing the time domain resource boundary, the implementation is easy, and the overhead and complexity of adjusting the time domain boundary of the time unit can be reduced.

In a possible implementation manner of the first aspect, the method further includes: sending first information, the first information being used for adjusting the boundary of the first time unit and/or the boundary of the second time unit, the first information comprising: a temporal location of the first time unit, and/or a temporal location of the second time unit.

In a possible implementation manner of the first aspect, the method further includes: and sending second indication information, wherein the second indication information is used for indicating to perform transmission delay compensation or indicating not to perform transmission delay compensation, and the transmission delay is used for determining the absolute sending time of the data packet or determining the absolute time corresponding to the time domain resource occupied by the data packet. In the implementation mode, by indicating whether the terminal performs transmission delay compensation, the network device and the terminal can understand the same absolute time consistently, so that the accuracy of the absolute sending time of the data packet determined by the terminal is improved, the accuracy of determining the time unit needing to perform boundary adjustment is further ensured, and the normal transmission of data is ensured.

In a possible implementation manner of the first aspect, the method further includes: and sending the absolute time, wherein the absolute time corresponds to the first time unit or the second time unit and is used for the terminal to determine the time corresponding to the time unit corresponding to the absolute time. Optionally, the absolute time may correspond to other time units. In an implementation mode, transmission delay compensation is performed on the absolute time, so that the accuracy of the transmission delay compensation can be improved, and the method is flexible and easy to implement.

In a possible implementation manner 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 boundary of the second time unit is the same as the boundary of the time domain resource occupied by the data packet. In this implementation manner, under the condition that it is ensured that the data packet does not cross the time unit boundary, more data can be transmitted in the adjusted time unit, and time domain resources are further saved.

In a second aspect, a method for adjusting a time domain resource boundary is provided, which may be performed by a terminal or a chip configured in the terminal. The method comprises the following steps. Receiving first information, the first information being used for adjusting 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 position of the second time unit, the time domain resource occupied by the data packet spans the first time unit and the second time unit. And determining the boundary of the adjusted first time unit and/or the boundary of the adjusted second time unit according to the first information, wherein the data packet is sent or received within the adjusted first time, or the data packet is sent or received within the adjusted second time unit.

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

In one possible implementation manner of the second aspect, the method further includes: adjusting the boundary of the first time unit forwards or backwards in time domain according to the first information; and/or adjusting the boundary of the second time unit forwards or backwards in time domain according to the first information.

In one possible implementation manner of the second aspect, the method further includes: and receiving second indication information, wherein the second indication information is used for indicating that transmission delay compensation is carried out or indicating that transmission delay compensation is not carried out, and the transmission delay is used for determining the absolute sending time of the data packet. Or determining the absolute time corresponding to the time domain resource occupied by the data packet. And performing transmission delay compensation or not according to the second indication information. In this implementation, the terminal determines whether to perform transmission delay compensation according to indication information whether to perform transmission delay compensation or not, which is sent by the network device. Therefore, the terminal determines the clock of the terminal and achieves the purpose of synchronizing with the clock of the network equipment. The network equipment and the terminal can understand the same absolute time consistently, the accuracy of the absolute sending time of the data packet determined by the terminal is improved, the accuracy of determining the time unit needing boundary adjustment is further guaranteed, and normal transmission of data is guaranteed.

In one possible implementation manner of the second aspect, the method further includes: an absolute time is received, the absolute time corresponding to either 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 for the terminal to determine the time of the time unit corresponding to the absolute time. And determining whether to perform the transmission delay compensation on the absolute time according to the second indication information and the absolute time, so that the clock calibration information of the terminal can be determined. Wherein the second indication information is used for indicating the transmission delay compensation.

In a possible implementation manner of the first aspect or the second aspect, 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 adjusted time domain position of the boundary of the second time unit.

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

In a possible implementation manner of the first aspect or the second aspect, the first information further includes first indication information, where the first indication information is used to indicate that the adjustment of the boundary of the first time unit and/or the adjustment of the boundary of the second time unit 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, which may be performed by a terminal or a chip configured in the terminal. The method comprises the following steps: receiving third indication information from the network equipment, wherein the third indication information is used for indicating whether transmission delay compensation is carried out or not; when the third indication information indicates 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 the transmission delay compensation, the terminal does not perform the transmission delay compensation.

In the method for delay compensation provided in the third aspect, when the terminal needs to perform delay compensation, the network device may instruct the terminal to perform delay compensation. When the terminal is not required to perform delay compensation, the network device may instruct the terminal not to perform delay compensation. The terminal and the network equipment can be consistent in understanding of the same moment, and when the terminal and the network equipment communicate at the moment, the reliability of data transmission between the terminal and the network equipment 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 time cell boundary; the terminal performs transmission delay compensation, including: and according to the absolute time, performing the transmission delay compensation. In this implementation, the terminal may compensate for the transmission delay by performing the transmission delay compensation on the absolute time, so that the terminal and the network device have a consistent understanding of the absolute time. After or at the beginning of the absolute time, the terminal and the network device agree or align their understanding of the time. The method is convenient to realize, and the accuracy of the transmission delay compensation can be improved.

In a possible implementation manner of the third aspect, the method further includes: receiving a compensation time; the terminal performs transmission delay compensation, including: and performing the transmission delay compensation according to the absolute time and the compensation time. In this implementation, the terminal may determine a time by estimating a time length of a compensation time from a time when the absolute time is received, and regards the time as a time corresponding to the absolute time considered by the network device. Thereby it is achieved that the terminal and the network device have a consistent understanding of the absolute time. The method is convenient to realize, and can improve the accuracy of the transmission delay compensation.

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

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: a timing advance, TA, command is obtained, which is used to adjust the TA value. And performing uplink transmission according to the TA value.

In a fourth aspect, a method for delay compensation is provided, where the method may be performed by a network device, or may be performed by a chip configured in the network device. The method comprises the following steps: and determining third indication information, wherein the third indication information is used for indicating whether the terminal performs transmission delay compensation or not. And sending the third indication information to the terminal.

In the method for time delay compensation provided in the fourth aspect, when the terminal needs to perform time delay compensation, the network device may instruct the terminal to perform time delay compensation. When the terminal is not required to perform delay compensation, the network device may instruct the terminal not to perform delay compensation. The terminal and the network equipment can be consistent in understanding of the same moment, and when the terminal and the network equipment communicate at the moment, the reliability of data transmission between the terminal and the network equipment is improved.

In one possible implementation manner of the fourth aspect, the method further includes: and transmitting the absolute time to a terminal, wherein the absolute time corresponds to the boundary of a time unit, and the terminal performs transmission delay compensation on the absolute time.

In one possible implementation manner of the fourth aspect, the method further includes: and sending the compensation time to the terminal, wherein the compensation time is used for the terminal to perform transmission delay compensation.

In one possible implementation manner of the fourth aspect, the method further includes: and sending a Timing Advance (TA) command to the terminal, wherein the TA command is used for adjusting the TA value.

In a fifth aspect, a communication apparatus is provided, including: means or units for performing the steps of the above first aspect or any possible implementation of the first aspect (means), or means or units for performing the steps of the above fourth aspect or any possible implementation of the fourth aspect (means).

In a sixth aspect, a communication apparatus is provided, including: means or arrangement (means) for performing the steps of the second aspect above or any possible implementation of the second aspect above, or means or arrangement (means) for performing the steps of the third aspect above or any possible implementation of the third aspect above.

In a seventh aspect, there is provided a communication device, comprising at least one processor, configured to connect to a memory, to invoke a program in the memory to perform the method provided in the above first aspect or any possible implementation manner of the first aspect, or to perform the method provided in the above fourth aspect or any possible implementation manner of the fourth aspect. The memory may be located within the device or external to the device. And the processor includes one or more.

In an eighth aspect, the present application provides a communication device, comprising at least one processor, configured to connect to a memory, to invoke a program in the memory to perform the method provided in the second aspect or any possible implementation manner of the second aspect, or to perform the method provided in the third aspect or any possible implementation manner of the third aspect. The memory may be located within the device or external to the device. And the processor includes one or more.

In a ninth aspect, the present application provides a communication apparatus comprising at least one processor configured to perform the method provided in the above first aspect or any possible implementation manner of the first aspect, or to perform the method provided in the above fourth aspect or any possible implementation manner of the fourth aspect, and an interface circuit.

In a tenth aspect, the present application provides a communications device comprising at least one processor configured to perform the method provided in the second aspect above or any possible implementation manner of the second aspect, or to perform the method provided in the third aspect above or any possible implementation manner of the third aspect.

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

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

In a thirteenth aspect, the present application provides a program which, when executed by a processor, is adapted to perform the method provided in the above first aspect or any possible implementation manner of the first aspect, or to perform the method provided in the above fourth aspect or any possible implementation manner of the fourth aspect.

In a fourteenth aspect, the present application provides a program which, when executed by a processor, is adapted to perform the method provided in the second aspect or any possible implementation form of the second aspect above, or alternatively, is adapted to perform the method provided in the third aspect or any possible implementation form of the third aspect above,

the present application provides a program product, such as a computer readable storage medium, comprising the above program.

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, so that the time domain resource occupied by the data packet does not cross the boundary of the time domain resource, and 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.

Drawings

Fig. 1 is a diagram of symbol-granularity transmission of data packets.

Fig. 2 is a schematic diagram of a network architecture suitable for use in embodiments of the present application.

Fig. 3 is a schematic interaction diagram of a method for adjusting a time domain resource boundary according to an embodiment of the present application.

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

Fig. 5 is a schematic interaction diagram of another method for adjusting a boundary of a time domain resource according to an embodiment of the present application.

Fig. 6 is a schematic interaction diagram of another method for adjusting a boundary of a time domain resource according to an embodiment of the present application.

FIG. 7 is another schematic diagram after adjustment of the boundaries of the first time cell or the boundaries of the second time cell.

Fig. 8 is a schematic interaction diagram of another method for adjusting a boundary of a time domain resource according to an embodiment of the present application.

Fig. 9 is a schematic interaction diagram of another method for adjusting a boundary of a time domain resource according to an embodiment of the present application.

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

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

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

Fig. 13 is a schematic interaction diagram of another 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 in an embodiment of the present application.

Fig. 15 is a schematic structural diagram of another communication device according to an embodiment of the present application.

Fig. 16 is a schematic structural diagram of a network device according to an embodiment of the present application.

Fig. 17 is another schematic structural diagram of a network device according to an embodiment of the present application.

Fig. 18 is a schematic structural diagram of a terminal according to an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

First, terms of a part of the present application will be described.

A terminal: a terminal, also referred to as a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc., is a device that provides voice/data connectivity to a user, such as a handheld device with a wireless connection function or a vehicle-mounted device. Currently, some examples of terminals are: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm top computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in city (smart city), a wireless terminal in smart home (smart home), and the like. The embodiments of the present application are not limited.

A network device: a network device is a device in a wireless network for communicating with a terminal, such as a Radio Access Network (RAN) node that accesses the terminal to the wireless network. Currently, some examples of RAN nodes are: a gbb, a Transmission Reception Point (TRP), an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved Node B, or home Node B, HNB), a Base Band Unit (BBU), or a wireless fidelity (Wifi) Access Point (AP), etc. In one network configuration, 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, and may be an Orthogonal Frequency Division Multiplexing (OFDM) symbol, or a single carrier frequency division multiple access (SC-FDMA) symbol, where SC-FDMA is also referred to as an orthogonal frequency division multiplexing with transform precoding (OFDM with TP).

The communication between the network device and the terminal follows a certain protocol layer structure. For example, the control plane protocol layer structure may include functions of protocol layers such as a Radio Resource Control (RRC) layer, a PDCP layer, an RLC layer, a Medium Access Control (MAC) layer, and a physical layer. The user plane protocol layer structure can comprise functions of protocol layers such as a PDCP layer, an RLC layer, an MAC layer, a physical layer and the like; the physical layer is located at the lowest layer (layer one), the MAC layer, the RLC layer, and the PDCP layer belong to the second layer (layer two), and the RRC layer belongs to the third layer (layer three). In one implementation, a Service Data Adaptation Protocol (SDAP) layer may be further included above the PDCP layer.

"plurality" means two or more, and other terms are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. Furthermore, for elements (elements) that appear in the singular form "a," an, "and" the, "they are not intended to mean" one or only one "unless the context clearly dictates otherwise, but rather" one or more than one. For example, "adevice" means for one or more such devices. Still further, at least one (at least one of a).

In the embodiment of the application, the terminal or the 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 a memory (also referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processing through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer comprises applications such as a browser, an address list, word processing software, instant messaging software and the like. Furthermore, the embodiment of the present application does not particularly limit the specific structure of the execution subject of the method provided by the embodiment of the present application, as long as the execution subject can communicate with the method provided by the embodiment of the present application by running the program recorded with the code of the method provided by the embodiment of the present application, for example, the execution subject of the method provided by the embodiment of the present application may be a terminal or a network device, or a functional module capable of calling the program and executing the program in the terminal or the network device.

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

The specific requirements of URLLC services include: the reliability of data transmission reaches 99.999%, the transmission delay is lower than 1ms, and the signaling overhead is reduced as much as possible under the condition of meeting the requirements of high reliability and low delay. Ensuring reliability and latency of URLLC is a significant concern in the art.

Data transmission of the existing 5G system is arranged in units of subframes or slots (slots), and a data packet may be transmitted from a start position (start boundary) of one subframe or slot. The time length of a slot or subframe depends on the subcarrier spacing. For example, taking the subcarrier spacing of 15KHz as an example, one slot is 1ms long, one subframe includes two slots, and one subframe is 2ms long. Obviously, data transmission is arranged by taking slot as granularity, and the time delay requirement in an industrial scene cannot be met.

For this reason, the 5G communication system introduces the concept of short transmission time interval (sTTI), that is, transmission is scheduled in time units with shorter time lengths, so as to meet the requirement of URLLC service on time delay. For example, the data may be transmitted in time units of symbols. One slot includes 14 symbols for a normal cyclic prefix and 12 symbols for an extended cyclic prefix.

For data transmission of data with time granularity of a symbol, a data packet may be transmitted from the start position (start boundary) of one symbol. For example, taking the subcarrier spacing of 15KHz as an example, if the transmission takes "symbol" as granularity, the transmission time of the data packet in the air interface is 1/14 ms. Due to the physical layer limitations in the current protocol layer, one packet cannot be transmitted across two subframes or slots, i.e., one packet cannot be transmitted across slot boundaries or subframe boundaries. In data transmission with symbol granularity, if the time domain position of the data packet starting transmission is on the last symbol or a few symbols of a slot or a subframe, the data packet may have the problem of transmission across slot boundaries or subframe boundaries. For example, fig. 1 is a diagram illustrating symbol-granularity transmission of data packets, and it is assumed that a slot includes 14 symbols, and the 14 symbols are numbered 0 to 13 respectively. In the example shown in fig. 1, assuming that the position where a data packet starts to be transmitted is on the last 2 symbols of the time slot n, and the length of the time domain resource occupied by the data packet is greater than 2 symbols, a problem occurs in that the data packet is transmitted across the boundary between the time slot n and the time slot n + 1. Currently, there are three main solutions to this problem:

The first method comprises the following steps: the data packet is transmitted on the limited symbols remaining in the current subframe/slot. For example, for the example shown in fig. 1, the packet is transmitted on the last 2 symbols of slot n. However, in this way, since the time domain only has 2 sign bits left, it needs to occupy a large bandwidth to transmit the data packet, and the bandwidth value may be larger than the cell bandwidth, which is not achievable in this case. In addition, in an industrial environment, data packets of a plurality of terminals usually arrive at the same time, and if the method is adopted, the data of the plurality of terminals cannot be transmitted by using limited sign bits.

And the second method comprises the following steps: and pushing the data packet back to the next subframe/slot and starting transmission. For example, in the example shown in fig. 1, the data packet is pushed back to a certain symbol in the time slot n +1 to start transmission. By adopting the method, the transmission delay of the data packet is increased, and the requirement of the URLLC service on the delay cannot be met.

And the third is that: when data starts to be transmitted, in case that the subframe/slot is not enough to transmit the data packet, the data packet is divided into two Transmission Blocks (TB), the first transmission block is transmitted in the subframe/slot, and the second transmission block is transmitted in the next subframe/slot. For example, for the example shown in fig. 1, the packet is divided into two transport blocks at the slot boundary, the first transport block being transmitted in slot n and the second transport block being transmitted in slot n + 1. However, in this way, the data packet needs to be divided into two transport blocks for transmission, and additional overhead, such as header overhead of the additional data packet, needs to be introduced when the data packet is divided into two transport blocks.

Therefore, the above solutions cannot solve the problem of data packet transmission across the slot or subframe boundary well.

In view of this, the present application provides a method for adjusting a time domain resource boundary, which adjusts a time domain resource boundary (e.g., a subframe or a timeslot), so that the transmission of a data packet may not cross the time domain resource boundary, thereby reducing the resource overhead of data packet transmission and improving the communication efficiency on the basis of ensuring the data transmission delay requirement.

For the understanding of the embodiments of the present application, a communication system suitable for the embodiments of the present application will be briefly described with reference to fig. 2.

Fig. 2 is a schematic diagram of a communication system suitable for use in embodiments of the present application. As shown in fig. 2, the mobile communication system 100 may include a core network device 110, a radio access network device 120, and at least one terminal (such as a terminal 130 and a terminal 140 shown in fig. 1). The terminal is connected with the wireless access network equipment in a wireless mode, and the wireless access network equipment is connected with the core network equipment in a wireless or wired mode. The core network device and the radio access network device may be separate physical devices, or the function of the core network device and the logical function of the radio access network device may be integrated on the same physical device, or a physical device may be integrated with a part of the function of the core network device and a part of the function of the radio access network device. The terminals may be fixed or mobile. The terminal may transmit the uplink data packet to radio access network device 120 for transmission by radio access network device 120 to core network device 110. The radio access network device 120 may also transmit a downlink packet from the core network device 110 to the terminal. Where radio access network device 120 may be a network device as described above.

The radio access network equipment may include a baseband device and a radio frequency device, where the baseband device may be implemented by one node or by multiple nodes, and the radio frequency device may be implemented independently by being pulled away from the baseband device, may be integrated in the baseband device, or may be partially pulled away and partially integrated in the baseband device. For example, in a Long Term Evolution (LTE) communication system, a radio access network device includes a baseband apparatus and a radio frequency apparatus, where the radio frequency apparatus may be remotely arranged with respect to the baseband apparatus, for example, a Remote Radio Unit (RRU) is remotely arranged with respect to a BBU.

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

The functions of these protocol layers may be implemented by one node, or may be implemented by a plurality of nodes; for example, in an evolved structure, a radio access network device may include a Centralized Unit (CU) and a Distributed Unit (DU), and a plurality of DUs may be centrally controlled by one CU. The CU and the DU may be divided according to protocol layers of the radio network, for example, functions of the PDCP layer and the above protocol layers are provided in the CU, protocol layers below the PDCP layer, functions of the RLC layer and the MAC layer, etc. are provided in the DU, etc.

In addition, the radio frequency device may be pulled away, not placed in the DU, or integrated in the DU, or partially pulled away and partially integrated in the DU, which is not limited herein.

It should be understood. Fig. 2 is a schematic diagram, and other network devices, such as a wireless relay device and a wireless backhaul device, may also be included in the communication system, which are not shown in fig. 2. The embodiments of the present application do not limit the number of core network devices, radio access network devices, and terminals included in the mobile communication system. In the mobile communication system 100, the radio access network device 120 may be the network device described above.

Fig. 3 is a schematic flowchart of a method 200 for adjusting a boundary of a time domain resource according to an embodiment of the present application, where the method 200 may be applied in the scenario shown in fig. 2, for example, in a scenario where a requirement on a packet transmission delay is relatively high, such as a scenario including process automation, process control, and the like. The embodiments of the present application are not limited thereto.

It should be understood that in the following description, the method of each embodiment is described by taking a terminal and a network device as an example of an execution subject of the execution method of each embodiment. By way of example, and not limitation, the execution subject of the execution method may also be a chip applied to terminals and network devices.

As shown in fig. 3, the method 200 shown in fig. 3 may include steps S210 to S220. The various steps in method 200 are described in detail below in conjunction with fig. 3. The method 200 comprises:

s210, the network device determines 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.

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 transmitted or received within the adjusted first time, or the data packet is transmitted or received within the adjusted second time unit.

Specifically, when the network device needs to transmit a data packet to the terminal, the network device may determine in advance a time or a moment of transmitting the data packet to the terminal. The network device may determine the time domain resources occupied by the data packet. The time domain resources occupied by the data packet span the first time unit and the second time unit. For example, once a data packet reaches an access stratum of a network device, the network device may consider that a time domain resource occupied by the data packet when the data packet reaches the access stratum is a start position of the time domain resource, or the network device may also consider that a time domain resource occupied by the data packet after a certain time period elapses from a time when the data packet reaches the access stratum is a start position of the time domain resource occupied by the data packet. The network device may determine the time domain resources occupied by the data packet in this manner. After the data packet reaches the access layer of the network device, the network device may determine that the time domain position of the first time unit or the second time unit needs to be adjusted if the QoS requirement of the data packet cannot be met according to the first time unit boundary or the second time unit boundary before the adjustment. Alternatively, when the terminal needs to send a data packet to the network, the terminal may determine in advance the time or moment when the data packet is sent to the network device. I.e. the terminal may also determine the time domain resources occupied by the data packet. The time domain resource occupied by the data packet may include, for example, the number of symbols and the starting and ending symbol numbers occupied by the data packet, the number of slots and the starting and ending slot numbers occupied by the data packet, or the number of subframes and the starting and ending subframe numbers occupied by the data packet. Alternatively, the time domain resource occupied by the data packet may further include a start time and an end time of data transmission, which are characterized by absolute time. And the time domain resource occupied by the data packet spans the first time unit and the second time unit. In this embodiment, the unit of the first time unit may be a radio frame, a subframe, a slot, or a symbol. The unit of the second time unit may also be a radio frame, a subframe, a slot, or a symbol. For example, in the example shown in fig. 1, the first time unit may be a time slot n, and the second time unit may be a time slot n +1, so that the time domain resource occupied by the data packet spans the boundary between the time slot n and the time slot n + 1. In the example shown in fig. 1, it can also be considered that the time domain resource occupied by the data packet spans the boundary between the symbol 13 and the symbol 0, that is, the time domain resource occupied by the data packet can also span the symbol boundary between two symbols.

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

When the time domain resource occupied by the data packet spans the first time unit and 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 in S220. Adjusting the boundaries 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), i.e. shifting the first time unit on the time axis as a whole, the time length of the first time unit itself can be kept constant. Similarly, adjusting the boundary of the second time unit may be understood as adjusting the position of the second time unit on the time axis. After the boundary of the first time unit and/or the boundary of the second time unit are adjusted, the data packet does not cross the boundary of the adjusted first time unit and the adjusted second time unit. That is, after the boundary of the first time unit and/or the second time unit is adjusted, the time domain resource occupied by the data packet completely falls within the first time unit after the adjusted boundary or the second time unit after the adjusted boundary. After adjusting the boundary of the first time unit and/or the boundary of the second time unit, the network device may send or receive the data packet in the adjusted first time, or send or receive the data packet in the adjusted second time unit. For example, fig. 4 is a schematic diagram of the adjusted boundary of the first time unit or the adjusted boundary of the second time unit. As shown in fig. 4, the time domain resource occupied by the data packet completely falls within the adjusted first time unit or completely falls within the adjusted second time unit after the adjustment of the boundaries of the first time unit and the boundaries or the boundaries of the second time unit.

According to the method for adjusting the time domain resource boundary, 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 boundary of the two time domain resources is adjusted, so that the time domain resource occupied by the data packet does not cross the time domain resource boundary, the resource overhead of data packet transmission is reduced on the basis of ensuring the data transmission delay requirement, 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, only the boundaries of the first time unit may be adjusted on the condition that no other data packets need to be transmitted or received over the second time unit. The time domain resources occupied by the data packet fall completely within the adjusted first time unit. The network device receives or transmits 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 is not adjusted. For example, the boundary of the second time unit may only be adjusted on condition that no other data packets need to be sent or received on the first time unit. The time domain resource occupied by the data packet falls completely within the adjusted second time unit. The network device receives or transmits the data packet in the adjusted second time unit. Optionally, 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 transmit the data packet in the adjusted second time unit, and receive or transmit other data packets in the adjusted first time unit.

It is further understood that the first time unit and the second time unit may be downlink time units, and if the first time unit and the second time unit are downlink time units, the network device may transmit the data packet to the terminal within the adjusted first time, or the network device may transmit 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 a time or a moment when the data packet is sent to the network device. I.e. the terminal may also determine the time domain resources occupied by the data packet. If the first time unit and the second time unit are uplink time units. The network device may receive the data packet sent by the terminal within the adjusted first time unit, or the network device may receive the data packet sent by the terminal within the adjusted second time unit.

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

S230, the network device sends first information to the terminal, where the first information is used for the terminal to adjust the boundary of the first time unit and/or the boundary of the second time unit, and the first information includes: a temporal location of the first time unit, and/or a temporal location of the second time unit.

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

The descriptions of S210 and S220 shown in fig. 5 may refer to the above descriptions of S210 and S220, and are not repeated here for brevity.

In S230, after adjusting the boundary of the first time unit and/or the boundary of the second time unit, the network device may send related information (first information) for adjusting the boundary of the first time unit and/or the boundary of the second time unit to the terminal, so that the terminal determines the adjusted boundary of the first time unit and/or the adjusted boundary of the second time unit according to the first information. The terminal may determine the adjusted boundary of the first time unit and/or the adjusted boundary of the second time unit according to the first information. Determining the boundary of the adjusted first time unit may be understood as determining the position in the adjusted first time unit in the time domain or in the time domain. Similarly, determining the boundary of the adjusted second time unit may be understood as determining the position in the adjusted second time unit in the time domain or the position in the time domain. After determining the adjusted boundary of the first time unit and/or the adjusted boundary of the second time unit, the terminal may send the data packet to the network device in the adjusted first time unit or the adjusted second time unit, or receive the data packet sent by the network device.

The first information includes a temporal location of the first time unit and/or a temporal location 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 the 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 the adjustment. The terminal may determine which time cell or time cells need to be adjusted in boundary according to the time domain position of the first time cell and/or the time domain position of the second time cell, and then determine the adjusted boundary of the first time cell and/or the adjusted boundary of the second time cell in combination with other information, for example, the adjustment amount of the boundary of the first time cell and/or the adjustment amount of the boundary of the second time cell. Therefore, the data packet can be sent to the network device or received from the network device in the adjusted first time unit or the adjusted second time unit.

Optionally, in a possible implementation manner, 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 adjusted time domain position of the boundary of the second time unit.

Specifically, the first information is used for the terminal to determine the boundary of the first time unit and/or the boundary of the second time unit after adjustment. Thus, the first information may comprise, in addition to the temporal position of the first time unit and/or the temporal position of the second time unit, an amount of adjustment of the boundary of the first time unit and/or an amount of adjustment of the boundary of the second time unit. For example, the terminal may determine the adjusted boundary of the first time unit 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 adjusted boundary of the first time unit according to the adjustment amount of the boundary of the second time unit and the time domain position of the second time unit. I.e. the first information may comprise the adjustment of the boundary of the first time unit and the temporal position of the first time unit and/or the adjustment of the boundary of the second time unit and the temporal position of the second time unit. The unit of 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 (μ s), nanoseconds (ns), or one absolute time length, or the like, and of course, the unit of the adjustment amount may be other longer or shorter time unit.

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

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

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

In an embodiment of the present application, the time domain position of the first time unit may be characterized by an absolute time domain position of the first time unit or a time unit number. The absolute time domain position of the first time unit may be characterized by an absolute time of a start position of the first time unit and an absolute time of an end position of the first time unit. For example, the absolute temporal location of the first time may be from a start of T1ms to an end of T2ms, with T2 being greater than T1. The unit of absolute time may be milliseconds (ms), microseconds (μ s), or nanoseconds (ns), etc. The time unit number of the first time unit can be understood as the number of the occupied time domain resource unit of the first time unit. For example, if the first time unit is a radio frame, the time unit number of the first time unit is a radio 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 slot, the time unit number of the first time unit is the slot number, and so on. For example, if the first time unit is a time slot, the time unit number of the first time unit is time slot n, i.e. the time domain position of the first time unit is characterized by time slot n.

Optionally, in other possible implementations of the present application, the first information further includes first indication information, where the first indication information is used to indicate that the adjustment of the boundary of the first time unit and/or the adjustment of the boundary of the second time unit is applicable to uplink transmission, or applicable to downlink transmission, or applicable to uplink transmission and downlink transmission.

Specifically, the first information may further include first indication information 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 applicable to 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, the terminal receives the downlink data packet sent by the network device in the adjusted first time unit after receiving the first indication information, estimates the time domain position of the corresponding uplink sending time unit by taking the boundary of the adjusted first time unit as a reference, and sends the uplink data packet to the network device at the determined time domain position of the uplink sending time unit.

When the first indication information is used for indicating 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 a downlink data packet sent by the network equipment in the adjusted first time unit, estimates the time domain position of the corresponding uplink sending time unit by taking the boundary of the first time unit before adjustment as a reference, and sends the uplink data packet to the network equipment at the determined time domain position of the uplink sending time unit.

When the first indication information is used for indicating that the adjustment of the boundary of the first time unit is suitable for downlink transmission and uplink transmission, after receiving the first indication information, the terminal receives a downlink data packet sent by the network equipment in the adjusted first time unit, calculates the time domain position of the corresponding uplink sending time unit by taking the boundary of the adjusted first time unit as a reference, and sends the uplink data packet to the network equipment at the determined time domain position of the uplink sending time unit.

Similarly, when the first indication information is used to indicate that the adjustment on the second time unit boundary is applicable to uplink transmission, or applicable to downlink transmission, or applicable to the uplink transmission and the downlink transmission, the adjustment on the first time unit boundary is applicable to uplink transmission, or applicable to downlink transmission, or applicable to the uplink transmission and the downlink transmission, which is similar to the above-mentioned adjustment on the first time unit boundary is not 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 applicable to uplink transmission, the terminal receives the first indication information, receives downlink packets sent by the network device in the adjusted first time unit and second time unit, estimates the time domain position of the corresponding uplink transmission time unit based on the adjusted boundary of the first time unit and the adjusted boundary of the second time unit, and sends the uplink packets 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, the method 200 further includes S230 based on the method steps shown in fig. 5.

S231, the terminal adjusts the boundary of the first time unit forwards or backwards in the time domain according to the first information; and/or adjusting the boundary of the second time unit forwards or backwards in time domain according to the first information.

The descriptions of S210, S220, S230, and S240 shown in fig. 4 may refer to the above descriptions of S210, S220, S230, and S240, and are not repeated here for brevity.

In S231 and S220, when the boundary of the first time unit and/or the boundary of the second time unit are adjusted, the boundary of the first time unit may be adjusted forward or backward in the time domain; and/or adjusting the boundaries of the second time cell forward or backward in time domain. The forward or backward adjustment is here with reference to the original temporal position (temporal boundary) of the first time unit or the second time unit. For example, assume 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. If the boundary of the first time unit is adjusted forward relative to the original time domain position of the first time unit to obtain the adjusted time domain position of the first time unit, the time domain of the adjusted time domain position of the first time unit is partially overlapped with the time slot n. If the boundary of the first time unit is adjusted backward relative to the original time domain position of the first time unit to obtain the adjusted time domain position of the first time unit, the time domain of the adjusted time domain position of the first time unit is partially overlapped with the time slot n + 2. And the data packets all fall in the adjusted first time unit or the adjusted second time unit. Alternatively, the relationship between the positive and negative values of the adjustment amount and the adjustment direction for the first time unit boundary may be predefined or preconfigured. For example, if a positive value of the adjustment amount of the first time cell boundary indicates that the first time cell boundary is adjusted backward in the time domain, and if a negative value of the adjustment amount of the first time cell boundary indicates that the first time cell boundary is adjusted forward in the time domain. Or, if a positive value of the adjustment amount of the first time cell boundary indicates that the first time cell boundary is adjusted forward in the time domain, and if a negative value of the adjustment amount of the first time cell boundary indicates that the first time cell boundary is adjusted backward in the time domain. Similarly, the boundary of the second time unit may be adjusted forward or backward in time domain, and the reference datum for forward 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 forwards or backwards, the time domain resource boundary occupied by the data packet can be realized without crossing the time domain resource boundary, the realization is easy, and the expense and the complexity for adjusting the time domain boundary of the time unit can be reduced.

Optionally, in some possible implementation manners of the present application, after the terminal or the 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 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. The description will be made with reference to an example shown in fig. 7. In fig. 7, it is assumed that the original time domain position of the first time unit is a time slot n +1, and the original time domain position of the second time unit is a time slot n + 2. The time domain resources occupied by the packet span the boundary of time slot n +1 and time slot n + 2. For example, if the boundary of the time slot n +1 is adjusted, the adjusted boundary of the 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 the time slot n +2 is adjusted, the adjusted boundary of the time slot n +2 may be the same as the starting 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 making the adjusted boundary of the second time unit the same as the boundary of the time domain resource occupied by the data packet, more data can be transmitted in the adjusted time unit under the condition of ensuring that the data packet is not transmitted across the time unit boundary, thereby further saving the time domain resource.

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 and the boundary of the time domain resource occupied by the data packet may also be different. Only the data packet is required to be ensured to completely fall in the adjusted first time unit or the adjusted second time unit, the application does not limit the relationship between the adjusted boundaries of the first time unit and the second time unit and the positions of the boundaries of the time domain resources occupied by the data packet,

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

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

And S233, the terminal performs transmission delay compensation or does not perform transmission delay compensation according to the second indication information.

The descriptions of S210 and S220 shown in fig. 8 may refer to the above descriptions of S210 and S220, and are not repeated here for brevity.

The network device may directly notify the terminal to adjust the time unit corresponding to a certain absolute time, in addition to notifying the terminal of which time unit or time unit boundaries need to be adjusted through the first information. In this case, it is necessary that the network device and the terminal have a consistent understanding of a certain absolute time, since the information transmission between the network device and the terminal takes time (there is a transmission delay). In this case, it may happen that the network device and the terminal do not understand consistently for a certain absolute time. For example, assuming that a packet will start to be transmitted at a time 14/34/45/320 ms506.5 us/1/25/2019, the network device notifies the terminal: the boundary of the radio frame, the subframe or the time slot corresponding to the 14 hours, 320ms506.5us of 2019 is adjusted forwards or backwards for 200ns, and at this time, the terminal and the network equipment need to be ensured to be paired with the boundary of the radio frame, the subframe or the time slot corresponding to the 14 hours, 34 minutes, 45 seconds of 2019 1, 25 days and 25 days

320ms506.5us "is understood to be consistent. Due to the existence of the transmission delay, a situation that the network device and the terminal have inconsistent understanding for a certain absolute time may occur. For example, the terminal may interpret "14 hours 34 minutes 45 seconds 320ms506.5us at 25/1/2019" as a certain time within subframe No. 7 of radio frame No. 38, and the network device may interpret the time

When the "14 hours, 34 minutes, 45 seconds, 320ms506.5us in 1 month, 25 days and 14 days in 2019" is understood as a certain moment in the subframe of number 8 of the number 38 wireless frame, the network device and the terminal have inconsistent understanding of the same absolute time, and the time units which are determined by the terminal and the network device and need to be adjusted are different, so that communication errors occur. Therefore, in S232, the network device may send second indication information to the terminal, where the second indication information is used to indicate the terminal to perform transmission delay compensation or is used to indicate the terminal not to perform transmission delay compensation. The transmission delay is used for the terminal to determine the absolute sending time of the data packet, or is used for determining the absolute time corresponding to the time domain resource occupied by the data packet. Optionally, the transmission delay may also be used for the terminal to determine the time corresponding to other time domain resources. In S233, the terminal performs propagation delay compensation or does not perform propagation delay compensation according to the second instruction information. The transmission delay is used for the terminal to determine the absolute sending time of the data packet, so that the terminal determines the clock of the terminal and achieves the aim of synchronizing with the clock of the base station. When the second indication information is used to indicate the terminal to perform transmission delay compensation, the terminal may determine, according to the transmission delay, the absolute transmission time of the data packet, and determine, according to the absolute transmission time of the data packet, a time unit (e.g., the first time unit or the second time unit) corresponding to the absolute transmission time of the data packet, so as to determine a time unit (e.g., the first time unit or the second time unit) that needs to be boundary-adjusted. And then, the boundary of the first time unit or the second time unit is adjusted forwards or backwards in the time domain, so that the occupied time domain resource of the data packet completely falls in the first time unit after the boundary is adjusted or the second time unit after the boundary is adjusted.

According to the method, whether the transmission delay compensation is carried out by the terminal is indicated, so that the terminal determines the clock of the terminal, and the purpose of clock synchronization with the network equipment is achieved. The network equipment and the terminal can understand the same absolute time consistently, the accuracy of the absolute sending time of the data packet determined by the terminal is improved, the accuracy of determining the time unit needing boundary adjustment is further guaranteed, and normal transmission of data is guaranteed.

Optionally, the flows shown in fig. 5 and 6 may also include S232 and S233.

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

S234, the network device sends the 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 indicate the transmission delay compensation.

The descriptions of S210, S220, S232, and S233 shown in fig. 9 may refer to the above descriptions of S210, S220, S232, and S233, and are not repeated here for brevity.

In S234, in order to make the network device and the terminal have a consistent understanding of a certain absolute time, the network device may send the absolute time to the terminal, where the absolute time corresponds to the first time unit or the second time unit. The absolute time is used for the propagation delay compensation. In S245, when the second indication information indicates that the terminal performs the propagation delay compensation, the terminal may perform the propagation delay compensation according to the absolute time. And 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 utilizes the indication of 'whether to perform transmission delay compensation' during determination. The absolute time corresponds to a reference point in time or a time calibration point. The terminal and the network device can make the understanding of the absolute time consistent by performing transmission delay compensation on the absolute time. After or from the absolute time, the terminal and the network device can agree or align the understanding of the absolute time. By using absolute time to perform transmission delay compensation, the accuracy of the transmission delay compensation can be improved, and the method is flexible and easy to implement.

Optionally, the terminal may obtain a Timing Advance (TA), and the TA is used for performing time synchronization between the terminal and the network device. The terminal may determine the transmission delay according to the TA, and further, the terminal may perform transmission delay compensation according to the transmission delay and the absolute time. Or, 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 using a Timing Advance Command (TAC) field carried in a media access control random access response (MAC RAR) signal. Optionally, the network device may further notify the terminal of the TA value adjustment amount through a MAC control element (MAC CE).

Since the terminal cannot measure the TA by itself, the terminal needs to measure the TA together with the network device, and an error is introduced in the TA measuring process. For example, when the distance between the network device and the terminal is greater than 200 meters, the measured transmission delay is beneficial for time synchronization, in which case the network device may 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 very large, and in this case, the network device may instruct the terminal not to perform transmission delay compensation through the second indication information.

It should be understood that the above description is only given by using the TA value for delay compensation. If the terminal uses other methods except for the TA for the delay compensation and the delay compensation precision is different from the precision compensated by the TA, the network device also has different judgment criteria for whether to perform the transmission delay compensation. For example, if the accuracy of delay compensation by using other methods is higher than that by using the TA method, the network device may 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 not to perform transmission delay compensation when the distance is less than 100 meters. The above 100 meters are only illustrative and should not limit the present application in any way.

And if the second indication information indicates that the transmission delay compensation is not performed, the terminal receives the absolute time sent by the network equipment. The time unit (first time or second time unit) corresponding to the absolute time of sending the data packet is directly determined according to the TA value and the absolute time, and then the boundary of the first time unit or the second time unit is adjusted forwards or backwards in the time domain, so that the time domain resource occupied by the data packet completely falls in the first time unit after the boundary is adjusted or the second time unit after the boundary is adjusted.

It should also be understood that, in this embodiment of the 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. I.e. the absolute time the network device sends to the terminal may not be the absolute time of transmission of the data packet. The absolute time may also correspond to a time unit other than the first time unit or the second time unit; for example, the absolute time transmitted to the terminal by the network device may be earlier than the absolute time corresponding to the first time unit or the second time unit, and 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. And 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 utilizes the indication of 'whether to perform transmission delay compensation' during determination.

The following description is given in conjunction with specific examples,

assuming that a data packet is to be transmitted at a time 14 hour 34 minutes 45 seconds 320ms506.5us in 1 month 25 in 2019, a time unit corresponding to the time 14 hour 34 minutes 45 seconds 320ms506.5us in 1 month 25 in 2019 needs to be adjusted forward or backward, and a time unit corresponding to the time 14 hour 34 minutes 45 seconds 320ms506.5us in 1 month 25 in 2019 is a first time unit or a second time unit. Suppose that the 14 hours of 34 minutes, 45 seconds, 320ms506.5us in 1 month, 25 days and 14 days in 2019 correspond to the number 38 radio frame No. 8 subframe, i.e. the number 38 radio frame No. 8 subframe is the first time unit or the second time unit. The network device may notify the terminal at some time before radio frame number 38, for example, over radio frame number 34, of: the absolute time corresponding to the end of subframe No. 7 of radio frame No. 38 is 34 minutes 44 seconds 220ms at 14 hours in 1 month and 25 months in 2019, and "34 minutes 44 seconds 220ms at 14 hours in 1 month and 25 days in 2019" can be understood as the absolute time transmitted to the terminal by the network device. After receiving the information, the terminal waits until the end of the subframe No. 7 of the radio frame No. 38, considers that the time of the end is 34 minutes, 44 seconds and 220ms at 14 time of 1 month and 25 days in 2019, and considers that the absolute time corresponding to the end of the subframe No. 7 of the radio frame No. 38 is 34 minutes, 44 seconds and 220ms at 14 time of 1 month and 25 days in 2019. From this moment, the time of 1100ms506.5us is 34 minutes, 45 seconds and 320ms506.5us at 14 times of 1 month, 25 days and 2019, and after the terminal determines that the time of 34 minutes, 45 seconds and 320ms506.5us at 14 times of 1 month, 25 days and 2019, the boundary of the corresponding subframe at this time is adjusted forwards or backwards. In the above process, the network device notifies the terminal that there is a transmission delay in the process of "the time at the end of subframe No. 7 of radio frame No. 38 is 34 minutes, 44 seconds, 220ms at 14 times of 25 days 1 month in 2019". The network equipment is caused to consider the 'ending position of the No. 7 subframe of the No. 38 wireless frame' to be different from the 'ending position of the No. 7 subframe of the No. 38 wireless frame' considered by the terminal. The difference between the time of the ending of the sub-frame No. 7 of the radio frame No. 38 considered by the network device and the time of the ending of the sub-frame No. 7 of the radio frame No. 38 considered by the terminal is the transmission delay. When the network device indicates that the terminal needs to perform transmission delay compensation, the terminal may compensate the transmission delay by using the TA. Specifically, the terminal calculates the transmission delay through the TA, calculates the time length of the transmission delay forward at the time considered as the "end of the subframe No. 7 of the radio frame No. 38", and considers the time as the time corresponding to the end of the subframe No. 7 of the radio frame No. 38 considered by the network device, so that the time considered by the network device and the terminal is consistent. Optionally, the terminal may also compensate the transmission delay by using the compensation time, where the compensation time is notified to the terminal by the network device.

According to the method for adjusting the time domain resource boundary, whether the terminal carries out transmission delay compensation or not is indicated by the network equipment, so that the terminal and the network equipment can understand the absolute sending time of the data packet consistently. The time units corresponding to the absolute sending time of the data packet determined by the network equipment and the terminal are ensured to be consistent, the accuracy of adjusting the time unit boundary is ensured, and the reliability of data transmission is further ensured.

The application also provides a time delay compensation method, which can be applied to the scene shown in fig. 2, and can also be applied to other scenes requiring transmission time delay compensation. As shown in fig. 10, the method 300 shown in fig. 10 may include steps S310 to S320. The various steps in method 300 are described in detail below in conjunction with fig. 10. The method 300 includes:

and S310, the network equipment sends third indication information to the terminal, wherein the third indication information is used for indicating whether to perform transmission delay compensation or not. Accordingly, 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 that the transmission delay compensation is not performed, the terminal does not perform the transmission delay compensation.

In particular, since transmission of information or data between the network device and the terminal requires time (there is a transmission delay). In this case, it may happen that the network device and the terminal do not understand consistently for 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. And after the terminal receives the third indication information, according to the content indicated by the third indication information, performing transmission delay compensation or not performing transmission delay compensation.

According to the time delay compensation method, when the terminal is required to perform time delay compensation, the network equipment can indicate the terminal to perform time delay compensation, and when the terminal is not required to perform time delay compensation, the network equipment can indicate the terminal not to perform time delay compensation. Therefore, the terminal can determine the clock of the terminal, and the purpose of synchronizing with the clock of the network equipment is achieved.

The terminal and the network equipment can be consistent in understanding of the same moment, and when the terminal and the network equipment communicate at the moment, the reliability of data transmission between the terminal and the network equipment is improved.

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

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

In the above step S320: when the third indication information is used for indicating the transmission delay compensation, the terminal performs the transmission delay compensation, including:

s321, the terminal performs the transmission delay compensation according to the absolute time.

The description of S310 shown in fig. 11 may refer to the above description of S310, and is not repeated here for brevity.

In S311, when the third indication information is used to indicate that the transmission delay compensation is performed, the network device may send an absolute time to the terminal, where the absolute time corresponds to a boundary of a time unit. The time unit may be a radio frame, a subframe, a slot, a symbol, or the like. In S321, the terminal may perform the propagation delay compensation according to the absolute time. The absolute time corresponds to a reference point in time or a time calibration point. The absolute time is used for the terminal to determine the time of the time unit corresponding to the absolute time. And 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 utilizes the indication of 'whether to perform transmission delay compensation' during determination. The terminal can make the understanding of the absolute time consistent with that of the network device by performing the transmission delay compensation on the absolute time. After or from the absolute time, the terminal and the network device agree or align their comprehension of the time. The method is convenient to realize, and the accuracy of the transmission delay compensation can be improved.

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

S312, the network device sends the backoff time to the terminal. Accordingly, the terminal receives the compensation.

In S321 described above: the terminal performs the transmission delay compensation according to the absolute time, and the method comprises the following steps:

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 above description of S310 and S311, and for brevity, the description is omitted here.

In S312, the network device may transmit the backoff time to the terminal, where the backoff time is used for the terminal to perform transmission delay compensation. The compensation time can be understood as the transmission delay. In S321, the terminal performs the propagation delay compensation according to the absolute time and the compensation time. For example, the terminal may determine a time by estimating a time length of a compensation time from a time when the absolute time is received, and consider the time as a time corresponding to a time unit corresponding to the absolute time considered by the network device. Thereby it is achieved that the terminal and the network device have a consistent understanding of the absolute time. The method is convenient to realize, and the accuracy of the transmission delay compensation can be improved.

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

S313, the terminal obtains a timing advance TA command, which is used to adjust the TA value.

and 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 above description of S310 and S311, and for brevity, the description is omitted here.

In S313, the terminal may also determine a TA value by acquiring the TA command. The TA value is used for time synchronization between the terminal and the network device. The terminal may determine the transmission delay according to the TA. In S321, the terminal may perform the propagation delay compensation according to the absolute time and the TA value. The transmission delay compensation is performed by using the TA and the absolute time. For example, the terminal may determine a time by estimating a time length indicated by a TA from a time when the absolute time is received or determining a transmission delay time length according to the TA, and consider the time as a time corresponding to a time unit corresponding to the absolute time considered by the network device. Thereby it is achieved that the terminal and the network device have a consistent understanding of the absolute time. The realization is convenient.

In some possible implementations of the present application, when the third indication information is used to indicate that transmission delay compensation is not performed, the terminal may obtain a timing advance TA command, where the TA command is used to adjust a TA value. And performing uplink transmission according to the TA value. Namely, the terminal only carries out uplink transmission according to the TA value without carrying out 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 for time synchronization, in which case, the network device may instruct the terminal to perform transmission delay compensation through the third indication information. When the distance between the network device and the terminal is less than 200 meters, the measured transmission delay error will be very large, and in this case, the network device may instruct the terminal not to perform transmission delay compensation through the third indication information.

It should be understood that, in various embodiments of the present application, the first indication information, the second indication information, or the third indication information sent by the network device to the terminal may be implemented by the network device sending higher layer signaling, physical layer signaling, or dedicated configuration information to the terminal. The higher layer signaling may include radio resource control signaling (RRC), Medium Access Control (MAC) Control Element (CE), Radio Link Control (RLC) signaling, and the like, for example, and the physical layer signaling may include Downlink Control Information (DCI), and the like, for example.

It should also be understood that, in various embodiments of the present application, first, second, etc. are used merely to indicate that a plurality of objects are different. For example, the first time unit and the second time unit are merely to show different time units. And should not have any influence on the time cell itself, and the above-mentioned first, second, etc. should not impose any limitation on the embodiments of the present application.

It should also be understood that the manner, the case, the category, and the division of the embodiments are only for convenience of description and should not be construed as a particular limitation, and features in various manners, the category, the case, and the embodiments may be combined without contradiction.

It should also be understood that the various numerical references referred to in the examples of the present application are merely for ease of description and distinction and are not intended to limit the scope of the examples of the present application. The sequence numbers of the above processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not be limited in any way to the implementation process of the embodiments of the present application.

It should also be understood that the above description is only for the purpose of facilitating a better understanding of the embodiments of the present application by those skilled in the art, and is not intended to limit the scope of the embodiments of the present application. For example, certain steps of the methods 200 and 300 described above may not be necessary, or certain steps may be newly added, etc. Or a combination of any two or more of the above embodiments. Such modifications, variations, or combinations are also within the scope of the embodiments of the present application.

It should also be understood that the foregoing descriptions of the embodiments of the present application focus on highlighting differences between the various embodiments, and that the same or similar elements that are not mentioned may be referred to one another and, for brevity, are not repeated herein.

It should also be understood that in the embodiment of the present application, "predefining" may be implemented by saving corresponding codes, tables, or other manners that may be used to indicate related information in advance in a device (for example, including a terminal and a network device), and the present application is not limited to a specific implementation manner thereof.

The method for adjusting the time domain resource boundary according to the embodiment of the present application is described in detail above with reference to fig. 1 to 13. Hereinafter, a communication device according to an embodiment of the present application will be described in detail with reference to fig. 14 to 18.

Fig. 14 shows a schematic block diagram of a communication apparatus 400 according to an embodiment of the present application, where the apparatus 400 may correspond to the network device described in the method 200, or may be a chip or a component applied to the network device, and each module or unit in the apparatus 400 is respectively used to execute each action or process performed by the network device in the method 200, as shown in fig. 15, the communication apparatus 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 a first time unit and a second time unit.

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

According to the communication device, the boundary of the two time domain resources is adjusted, so that the time domain resources occupied by the data packet do not span the time domain resource boundary, the resource overhead of data packet transmission is reduced on the basis of ensuring the data transmission delay requirement, and the communication efficiency is improved.

Optionally, in some possible implementations of the present application, the processing unit 410 is specifically configured to: adjusting the boundary of the first time unit forwards or backwards in time domain; and/or adjusting the boundaries of the second time cell forward or backward in time domain.

Optionally, in some possible implementations of the present application, the communication unit 420 is further configured to: sending first information, the first information being used for adjusting the boundary of the first time unit and/or the boundary of the second time unit, the first information comprising: a temporal location of the first time unit, and/or a temporal location of the second time unit.

Optionally, in some possible implementation manners of the present 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 adjusted time domain position of the boundary of the second time unit.

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

Optionally, in some possible implementations of the present application, the first information further includes first indication information, where the first indication information is used to indicate that the adjustment of the boundary of the first time unit and/or the adjustment of the boundary of the second time unit is applicable to uplink transmission, or applicable to downlink transmission, or applicable to uplink transmission and downlink transmission.

Optionally, in some possible implementations of the present application, the communication unit 420 is further configured to: and sending second indication information, wherein the second indication information is used for indicating that transmission delay compensation is carried out or indicating that transmission delay compensation is not carried out, and the transmission delay is used for determining the absolute sending time of the data packet.

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

Optionally, in some possible implementations 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 boundary of the second time unit is the same as the boundary of the time domain resource occupied by the data packet.

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

It should be understood that, for the specific process of each unit in the apparatus 400 to execute the corresponding step described above, please refer to the description related to the terminal in the embodiment shown in fig. 3, fig. 5, fig. 6, fig. 8, and fig. 9 and the related embodiment in the method 200, and for brevity, no further description is repeated here.

Optionally, the communication unit 420 may include a receiving unit (module) and a sending unit (module) for executing the steps of the network device receiving and sending information in the embodiments of the foregoing method 200 and method 300 and the embodiments shown in fig. 3, fig. 5, fig. 6, fig. 8 to fig. 13. 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 communicatively connected, the storage unit 430 stores instructions, the processing unit 410 is used for executing the instructions stored by the storage unit 430, and the communication unit 420 is used for performing 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 apparatus 400 shown in fig. 14 is capable of implementing the steps performed by the network device in the embodiments of the foregoing methods 200 and 300 and the embodiments shown in fig. 3, fig. 5, fig. 6, fig. 8 to fig. 13. Similar descriptions may refer to the description in the corresponding method previously described. To avoid repetition, further description is omitted 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 apparatus 500 according to an embodiment of the present application, where the apparatus 500 may correspond to the terminal described in the method 200, or may be a chip or a component applied to the terminal, and each module or unit in the apparatus 500 is respectively used to execute each action or process performed by the terminal in the method 200, as shown in fig. 15, the communication apparatus 500 may include: a communication unit 510 and a processing unit 520.

A communication unit 510, configured to receive first information, where the first information is used to adjust a boundary of the first time unit and/or a 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 time domain resource occupied by the data packet spans the first time unit and the second time unit.

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

According to the communication device, when the time domain resources occupied by the data packet span the boundary of the two time domain resources (the first time unit and the second time unit), the boundary of the two time domain resources is adjusted, so that the time domain resources occupied by the data packet do not span the boundary of the time domain resources, the resource overhead of data packet transmission is reduced on the basis of ensuring the requirement of data transmission delay, and the communication efficiency is improved.

Optionally, in some possible implementation manners of the present application, the processing unit 520 is specifically configured to: adjusting the boundary of the first time unit forwards or backwards in time domain according to the first information; and/or adjusting the boundary of the second time unit forwards or backwards in time domain according to the first information.

Optionally, in some possible implementations of the present application, the communication unit 510 is further configured to: and receiving second indication information, wherein the second indication information is used for indicating that transmission delay compensation is carried out or indicating that transmission delay compensation is not carried out, and the transmission delay is used for determining the absolute sending time of the data packet. The processing unit 520 is further configured to: and performing transmission delay compensation or not according to the second indication information.

Optionally, in some possible implementations of the present application, the communication unit 510 is further configured to: receiving an absolute time, the absolute time corresponding to the first time unit or the second time unit, the absolute time used for the propagation delay compensation. The processing unit 520 is further configured to: and performing the transmission delay compensation according to the second indication information and the absolute time, wherein the second indication information is used for indicating the transmission delay compensation.

It should be understood that for the specific processes of the units in the apparatus 500 to execute the corresponding steps described above, please refer to the description related to the terminal in the embodiments shown in fig. 3, fig. 5, fig. 6, and fig. 8 to fig. 13 and the related embodiments in the method 200 and the method 300, and for brevity, no further description is repeated here.

Optionally, the communication unit 510 may include a receiving unit (module) and a sending unit (module) for executing the steps of the terminal receiving information and sending information in the embodiments of the foregoing method 200 and method 300 and the embodiments shown in fig. 3, fig. 5, fig. 6, fig. 8 to fig. 13. Optionally, the communication device 500 may further comprise a storage unit 530 for storing instructions to be 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 communicatively connected, the storage unit 530 stores instructions, the processing unit 520 is used for executing the instructions stored in the storage unit 530, and the communication unit 510 is used for performing specific signal transceiving 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 devices is only a division of logical functions, and the actual implementation may be wholly or partially integrated into one physical entity or may be physically separated. And the units in the device can be realized in the form of software called by the processing element; or may be implemented entirely in hardware; part of the units can also be realized in the form of software called by a processing element, and part of the units can be realized in the form of hardware. For example, each unit may be a processing element separately set up, or may be implemented by being integrated into a chip of the apparatus, or may be stored in a memory in the form of a program, and a function of the unit may be called and executed by a processing element of the apparatus. In addition, all or part of the units can be integrated together or can be independently realized. The processing element may be a processor, and may be an integrated circuit having signal processing capabilities. In the implementation process, the steps of the method or the units above may be implemented by integrated logic circuits of hardware in a processor element or in a form called by software through the processor element.

In one example, the units in any of the above apparatuses may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), or a combination of at least two of these integrated circuit forms. As another example, when a Unit in a device may be implemented in the form of a Processing element scheduler, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of invoking programs. As another example, these units may be integrated together and implemented in the form of a system-on-a-chip (SOC).

The above unit for receiving is an interface circuit of the apparatus for receiving signals from other apparatuses. For example, when the device is implemented in the form of a chip, the receiving unit is an interface circuit for the chip to receive signals from other chips or devices. The above unit for transmitting is an interface circuit of the apparatus for transmitting a signal to other apparatuses. For example, when the device is implemented in the form of a chip, the transmitting unit is an interface circuit for the chip to transmit signals to other chips or devices.

Fig. 16 is a schematic structural diagram of a network device according to an embodiment of the present application. For implementing the operation of the network device in the above embodiments. As shown in fig. 16, the network device includes: antenna 601, radio frequency device 602, baseband device 603. The antenna 601 is connected to a radio frequency device 602. In the uplink direction, rf device 602 receives information transmitted by the terminal through antenna 601, and transmits the information transmitted by the terminal to baseband device 603 for processing. In the downlink direction, the baseband device 603 processes the information of the terminal and sends the information to the rf device 602, and the rf device 602 processes the information of the terminal and sends the processed information to the terminal through the antenna 601.

Baseband apparatus 603 may include one or more processing elements 6031, including, for example, a host CPU and other integrated circuits. Further, the baseband apparatus 603 may further include a storage part 6032 and an interface 6033, the storage part 6032 being used to store programs and data; an interface 6033, such as a Common Public Radio Interface (CPRI), is used for exchanging information with the radio frequency device 602. The above means for a network device may be located in the baseband apparatus 603, for example, the above means for a network device may be a chip on the baseband apparatus 603, the chip comprising at least one processing element and interface circuitry, wherein the processing element is configured to perform the steps of any of the methods performed by the above network device, and the interface circuitry is configured to communicate with other devices. In one implementation, the unit of the network device for implementing the steps in the above method may be implemented in the form of a processing element scheduler, for example, an apparatus for the network device includes a processing element and a storage element, and the processing element calls a program stored in the storage element to execute the method executed by the network device in the above method embodiment. The memory elements may be memory elements on the same chip as the processing element, i.e. on-chip memory elements, or may be memory elements on a different chip than the processing element, i.e. off-chip memory elements.

In another implementation, the unit of the network device for implementing the steps of the above method may be configured as one or more processing elements, which are disposed on the baseband apparatus, where the processing elements may be integrated circuits, for example: 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 may be integrated together to form a chip.

The units of the network device implementing the steps of the above method may be integrated together and implemented in the form of a system-on-a-chip (SOC), for example, a baseband device including the SOC chip for implementing the above method. At least one processing element and a storage element can be integrated in the chip, and the method executed by the network equipment is realized in the form that the processing element calls the stored program of the storage element; or, at least one integrated circuit may be integrated in the chip, for implementing the method executed by the above network device; alternatively, the above implementation modes may be combined, the functions of the partial units are implemented in the form of a processing element calling program, and the functions of the partial units are implemented in the form of an integrated circuit.

It is seen that the above apparatus for a network device may comprise at least one processing element and interface circuitry, wherein the at least one processing element is configured to perform the method performed by any one of the network devices provided by the above method embodiments. The processing element may: namely, calling the program stored in the storage element to execute part or all of the steps executed by the network equipment; it is also possible to: that is, some or all of the steps performed by the network device are performed by integrated logic circuitry of hardware in the processor element in combination with the instructions; of course, some or all of the steps performed by the above network device may also be performed in combination with the first manner and the second manner.

The processing elements herein, like those described above, may be a general purpose processor, such as a CPU, or one or more integrated circuits configured to implement the above methods, such as: 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.

The storage element may be a memory or a combination of a plurality of storage elements.

Fig. 17 is a schematic structural diagram of another network device according to an embodiment of the present application. Which may be the network device in the above embodiments, for implementing the operations of the network device in the above embodiments.

As shown in fig. 17, the network device includes: processor 710, memory 720, and interface 730, processor 710, memory 720, and interface 730 are in signal communication.

The apparatus 400 may be located in the network device, and the functions of the units may be implemented by the processor 710 calling a program stored in the memory 720. That is, the above … apparatus includes a memory for storing a program that is called by the processor to perform the method in the above method embodiments and a processor. The processor here may be an integrated circuit with signal processing capabilities, such as a CPU. Or the functions of the above respective units may be implemented 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. Alternatively, the above implementations may be combined.

Fig. 18 is a schematic structural diagram of a terminal according to an embodiment of the present application. It may be the terminal in the above embodiment, for implementing the operation of the terminal in the above embodiment. As shown in fig. 18, the terminal includes: antenna 810, radio frequency part 820, signal processing part 830. Antenna 810 is connected to radio frequency section 820. In the downlink direction, the radio frequency part 820 receives information transmitted by the network device through the antenna 810, and transmits the information transmitted by the network device to the signal processing part 830 for processing. In the uplink direction, the signal processing part 830 processes the information of the terminal and sends the information to the radio frequency part 820, and the radio frequency part 820 processes the information of the terminal and sends the information to the network device through the antenna 810.

The signal processing part 830 may include a modem subsystem for implementing processing of each communication protocol layer of data; the system also comprises a central processing subsystem used for realizing the processing of a terminal operating system and an application layer; in addition, other subsystems, such as a multimedia subsystem for implementing control of a terminal camera, a screen display, etc., peripheral subsystems for implementing connection with other devices, and the like may be included. The modem subsystem may be a separately provided chip. Alternatively, the above means for the terminal may be located at the modem subsystem.

The modem subsystem may include one or more processing elements 831, including, for example, a host CPU and other integrated circuits. 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 programs for executing the methods performed by the terminal in the above methods may not be stored in the storage element 832, but stored in a memory outside the modem subsystem, which is loaded for use when in use. The interface circuit 333 is used to communicate with other subsystems. The above apparatus for a terminal may be located in a modem subsystem, which may be implemented by a chip comprising at least one processing element for performing the steps of any of the methods performed by the above terminal and interface circuitry for communicating with other apparatus. In one implementation, the unit of the terminal for implementing the steps of the above method may be implemented in the form of a processing element scheduler, for example, an apparatus for the terminal includes a processing element and a storage element, and the processing element calls a program stored in the storage element to execute the method executed by the terminal in the above method embodiment. The memory elements may be memory elements with the processing elements on the same chip, i.e. on-chip memory elements.

In another implementation, the program for performing the method performed by the terminal in the above method may be a memory element on a different chip than the processing element, i.e. an off-chip memory element. At this time, the processing element calls or loads a program from the off-chip storage element onto 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 of the terminal implementing the steps of the above method may be configured as one or more processing elements disposed on the modem subsystem, where the processing elements may be integrated circuits, for example: 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 may be integrated together to form a chip.

The units of the terminal implementing the steps of the above method may be integrated together and implemented in the form of a system-on-a-chip (SOC) chip for implementing the above method. At least one processing element and a storage element can be integrated in the chip, and the processing element calls the stored program of the storage element to realize the method executed by the terminal; or, at least one integrated circuit may be integrated in the chip for implementing the method executed by the above terminal; alternatively, the above implementation modes may be combined, the functions of the partial units are implemented in the form of a processing element calling program, and the functions of the partial units are implemented in the form of an integrated circuit.

It will be seen that the above apparatus for a terminal may comprise at least one processing element and interface circuitry, wherein the at least one processing element is adapted to perform any of the methods performed by the terminal provided by the above method embodiments. The processing element may: namely, calling the program stored in the storage element to execute part or all of the steps executed by the terminal; it is also possible to: that is, some or all of the steps performed by the terminal are performed by integrated logic circuits of hardware in the processor element in combination with instructions; of course, some or all of the steps performed by the terminal may be performed in combination with the first and second manners.

An embodiment of the present application further provides a communication system, including: the terminal and the network device.

The present embodiments also provide a computer-readable medium for storing a computer program code, where the computer program includes instructions for executing the method for adjusting the time domain resource boundary of the present embodiments in the method 200 and the method 300 described above. The readable medium may be a read-only memory (ROM) or a Random Access Memory (RAM), which is not limited in this embodiment of the present application.

The present application also provides a computer program product comprising instructions that, when executed, cause the terminal and the network device to perform operations of the terminal and the network device corresponding to the above-described methods.

An embodiment of the present application further provides a system chip, where the system chip includes: a processing unit, which may be, for example, a processor, and a communication unit, which may be, for example, an input/output interface, a pin or a circuit, etc. The processing unit can execute computer instructions to enable a chip in the communication device to execute any one of the methods for adjusting time domain resource boundaries provided by the embodiments of the present application.

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

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

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a ROM, a Programmable Read Only Memory (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash memory. Volatile memory can be RAM, which acts as external cache memory. There are many different types of RAM, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), synclink DRAM (SLDRAM), and direct bus RAM (DRRAM).

The terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The terms "upstream" and "downstream" appearing in the present application are used to describe the direction of data/information transmission in a specific scenario, for example, the "upstream" direction generally refers to the direction of data/information transmission from the terminal to the network side, or the direction of transmission from the distributed unit to the centralized unit, and the "downstream" direction generally refers to the direction of data/information transmission from the network side to the terminal, or the direction of transmission from the centralized unit to the distributed unit.

Various objects such as various messages/information/devices/network elements/systems/devices/actions/operations/procedures/concepts may be named in the present application, it is to be understood that these specific names do not constitute limitations on related objects, and the named names may vary according to circumstances, contexts, or usage habits, and the understanding of the technical meaning of the technical terms in the present application should be mainly determined by the functions and technical effects embodied/performed in the technical solutions.

In the embodiments of the present application, unless otherwise specified or conflicting with respect to logic, the terms and/or descriptions in different embodiments have consistency and may be mutually cited, and technical features in different embodiments may be combined to form a new embodiment according to their inherent logic relationship.

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 in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the procedures or functions of the embodiments of the present application are performed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer program or instructions may be stored in or transmitted over a computer-readable storage medium. The computer readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server that integrates one or more available media.

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

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

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

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for adjusting time domain resource boundaries, comprising:

determining time domain resources occupied by a data packet, wherein the time domain resources occupied by the data packet span a first time unit and a second time unit;

and adjusting 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 sent or received within the adjusted second time unit.

2. The method of claim 1, wherein the adjusting the boundary of the first time unit and/or the boundary of the second time unit comprises:

adjusting the boundaries of the first time cell forward or backward in time domain; and/or the presence of a gas in the gas,

adjusting the boundaries of the second time cell forward or backward in time domain.

3. The method according to claim 1 or 2, characterized in that the method further comprises:

sending first information, the first information being used for adjusting the boundary of the first time unit and/or the boundary of the second time unit, the first information comprising:

A time domain position of the first time unit, and/or a time domain position of the second time unit.

4. The method of 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 presence of a gas in the gas,

an adjustment amount of the boundary of the second time unit or an adjusted time domain position of the boundary of the second time unit.

5. The method of claim 3 or 4, wherein the first information further comprises:

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

a period of boundary adjustment for the second time unit.

6. The method according to any of claims 3 to 5, wherein the first information further comprises first indication information 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 applicable to uplink transmission, or applicable to downlink transmission, or applicable to uplink transmission and downlink transmission.

7. The method according to any one of claims 1 to 6, further comprising:

And sending second indication information, wherein the second indication information is used for indicating to perform transmission delay compensation or indicating not to perform transmission delay compensation, and the transmission delay is used for determining the absolute sending time of the data packet.

8. The method of claim 7, further comprising:

and sending absolute time, wherein 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.

9. The method according to any one of claims 1 to 8,

the boundary of the first time unit after adjustment is the same as the boundary of the time domain resource occupied by the data packet, and/or the boundary of the second time unit after adjustment is the same as the boundary of the time domain resource occupied by the data packet.

10. The method according to any of claims 1 to 9, wherein the first time unit is a radio frame, a subframe, a slot or a symbol; and/or the second time unit is a radio frame, a subframe, a time slot or a symbol.

11. A method for determining adjusted time domain resource boundaries, comprising:

Receiving first information, wherein the first information is used for adjusting the boundary of the first time unit and/or the boundary of the second time unit, and the first information comprises: the time domain position of the first time unit, and/or the time domain position of the second time unit, and the time domain resources occupied by the data packet span the first time unit and the second time unit;

and 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 second time unit after adjustment.

12. The method of claim 11, further comprising:

adjusting the boundary of the first time unit forwards or backwards in time domain according to the first information; and/or the presence of a gas in the gas,

and adjusting the boundary of the second time unit forwards or backwards in the time domain according to the first information.

13. The method of claim 11 or 12, wherein the first information further comprises:

14. The method of any of claims 11 to 13, wherein the first information further comprises:

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

a period of boundary adjustment for the second time unit.

15. The method according to any of claims 11 to 14, wherein the first information further comprises first indication information 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 applicable to uplink transmission, or applicable to downlink transmission, or applicable to uplink transmission and downlink transmission.

16. The method according to any one of claims 11 to 15, further comprising:

receiving second indication information, wherein the second indication information is used for indicating that transmission delay compensation is performed or indicating that transmission delay compensation is not performed, and the transmission delay is used for determining the absolute sending time of the data packet;

And performing transmission delay compensation or not according to the second indication information.

17. The method of claim 16, further comprising:

receiving absolute time, wherein the absolute time corresponds to the first time unit or the second time unit and is used for the transmission delay compensation;

and performing the transmission delay compensation according to the second indication information and the absolute time, wherein the second indication information is used for indicating the transmission delay compensation.

18. The method according to any one of claims 11 to 17,

19. The method according to any of claims 11 to 18, wherein the first time unit is a radio frame, a subframe, a slot or a symbol; and/or the second time unit is a radio frame, a subframe, a time slot or a symbol.

20. A communication apparatus, characterized by comprising means for performing the steps of the method according to any of claims 1 to 10.

21. A communication device comprising a processor and an interface circuit,

the processor is configured to communicate with a terminal via the interface circuit and to perform the method of any of claims 1 to 10.

22. A communication apparatus comprising a processor coupled to a memory, reading and executing programs stored in the memory to implement the method of any one of claims 1 to 10.

23. A network device comprising an apparatus as claimed in any of claims 20 to 22.

24. A communication apparatus, characterized by comprising means for performing the steps of the method according to any of claims 11 to 19.

25. A communication device comprising a processor and an interface circuit,

the processor is configured to communicate with a terminal via the interface circuit and to perform the method of any of claims 11 to 19.

26. A communication apparatus comprising a processor coupled to a memory, reading and executing a program stored in the memory to implement a method according to any one of claims 11 to 19.

27. A terminal, characterised in that it comprises an apparatus according to any one of claims 24 to 26.

28. A computer-readable medium, comprising a computer program which, when run on a processor, causes the processor to carry out the method of any one of claims 1 to 19.