Transmission method, apparatus, device, and readable storage medium

Abstract

Embodiments of the present application provide a transmission method, device, equipment and readable storage medium, the method comprising: a terminal receives first information, the first information is used to determine at least two frame structures;The frame structure comprises at least one of the following: TDD uplink configuration;First frame structure, all time units in the first frame structure correspond to downlink transmission opportunity;Second frame structure, all time units in the second frame structure correspond to uplink transmission opportunity.

Description

Technical Field

[0001] This application relates to the field of communication technology, specifically to a transmission method, apparatus, device, and readable storage medium. Background Technology

[0002] Existing standards and implementation schemes employ techniques to reduce latency, including pre-scheduling, scheduling-free methods, short scheduling request (SR) periods, connected discontinuous reception (C-DRX) in closed connection state, 1ms frame structure, mini-slots, reducing the target block error rate (BLER), and increasing subcarrier spacing. Each technique reduces latency in different dimensions, such as... Figure 1 As shown.

[0003] How to reduce the latency of Time Division Duplex (TDD) systems is an urgent problem to be solved. Summary of the Invention

[0004] This application provides a transmission method, apparatus, device, and readable storage medium to address the problem of reducing latency in TDD systems.

[0005] Firstly, a transmission method is provided, including:

[0006] The terminal receives first information, which is used to determine at least two frame structures; the frame structure includes at least one of the following: TDD uplink / downlink configuration; a first frame structure, in which all time units in the first frame structure correspond to downlink transmission opportunities; and a second frame structure, in which all time units in the second frame structure correspond to uplink transmission opportunities.

[0007] Optionally, the frame structure is suitable for a general TDD uplink / downlink configuration or a dedicated TDD uplink / downlink configuration.

[0008] Optionally, the first information is used to determine at least two frame structures for a specified cell or a specified resource unit.

[0009] Optionally, the first information includes one or more of the following:

[0010] Subcarrier spacing;

[0011] Uplink and / or downlink transmission cycle;

[0012] Number of uplink and / or downlink time slots;

[0013] Number of up and / or down signs.

[0014] Optionally, the at least two frame structures satisfy the following: the frame structures of different resource units of the TDD carrier are different.

[0015] Optionally, the method further includes:

[0016] Based on the first information, the terminal determines the uplink and / or downlink transmission opportunities of different resource units in the TDD carrier at the first moment.

[0017] Optionally, the method further includes:

[0018] The terminal receives second information, which indicates the time-domain offset of at least a portion of the resource units.

[0019] Optionally, the method further includes:

[0020] The terminal determines the uplink and / or downlink transmission opportunities of different resource units in the TDD carrier at the second time based on the first and second information.

[0021] Optionally, at least one resource unit is configured as a third frame structure, which sequentially includes a first part, a second part, and a third part, wherein each time unit in the first part corresponds to an uplink transmission opportunity, each time unit in the second part corresponds to a downlink transmission opportunity, and the third part is the interval between the transition between downlink transmission opportunities and uplink transmission opportunities.

[0022] Optionally, the method further includes:

[0023] When different frame structures are configured for different TDD carriers, the terminal receives third information indicating the time slot offset of the TDD carrier.

[0024] Optionally, the method further includes:

[0025] The terminal determines the uplink and / or downlink transmission opportunities of different TDD carriers at the third time point based on the first and third information.

[0026] Optionally, the resource unit is N consecutive resource blocks in the same TDD carrier, where N is greater than or equal to 1.

[0027] Optionally, the resource unit is a bandwidth portion (BWP) or a subband.

[0028] Secondly, a transmission method is provided, including:

[0029] The network-side device sends first information, which is used to determine at least two frame structures; the frame structure includes at least one of the following: TDD uplink / downlink configuration; a first frame structure, in which all time units in the first frame structure correspond to downlink transmission opportunities; and a second frame structure, in which all time units in the second frame structure correspond to uplink transmission opportunities.

[0030] Optionally, the frame structure is suitable for a general TDD uplink / downlink configuration or a dedicated TDD uplink / downlink configuration.

[0031] Optionally, the first information is used to determine at least two frame structures for a specified cell or a specified resource unit.

[0032] Optionally, the first information includes one or more of the following:

[0033] Subcarrier spacing;

[0034] Uplink and / or downlink transmission cycle;

[0035] Number of uplink and / or downlink time slots;

[0036] Number of up and / or down signs.

[0037] The at least two frame structures satisfy the following: the frame structures of different resource units of the TDD carrier are different.

[0038] Optionally, the frame structure is suitable for a general TDD uplink / downlink configuration or a dedicated TDD uplink / downlink configuration.

[0039] Optionally, the first information is used to determine at least two frame structures for a specified cell or a specified resource unit.

[0040] Optionally, the method further includes:

[0041] The network-side device sends a second message indicating the time-domain offset of at least a portion of the resource units.

[0042] Optionally, at least one resource unit is configured as a third frame structure, which sequentially includes a first part, a second part, and a third part, wherein each time unit in the first part corresponds to an uplink transmission opportunity, each time unit in the second part corresponds to a downlink transmission opportunity, and the third part is the interval between the transition between downlink transmission opportunities and uplink transmission opportunities.

[0043] Optionally, the method further includes:

[0044] When different frame structures are configured for different TDD carriers, the network-side device sends third information indicating the time slot offset of the TDD carrier.

[0045] Thirdly, a transmission device is provided for use in a terminal, comprising:

[0046] A first receiving module is configured to receive first information, the first information being used to determine at least two frame structures; the frame structure includes at least one of the following: TDD uplink / downlink configuration; a first frame structure, in which all time units in the first frame structure correspond to downlink transmission opportunities; and a second frame structure, in which all time units in the second frame structure correspond to uplink transmission opportunities.

[0047] Fourthly, a transmission device is provided for use in network-side equipment, comprising:

[0048] A first transmitting module is configured to transmit first information, the first information being used to determine at least two frame structures; the frame structures include at least one of the following: TDD uplink / downlink configuration; a first frame structure, in which all time units in the first frame structure correspond to downlink transmission opportunities; and a second frame structure, in which all time units in the second frame structure correspond to uplink transmission opportunities.

[0049] Fifthly, a communication device is provided, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the method described in the first or second aspect.

[0050] A sixth aspect provides a readable storage medium storing a program that, when executed by a processor, implements the steps of the method as described in the first or second aspect.

[0051] In this embodiment of the application, the terminal can determine at least two frame structures based on the first information, wherein the frame structure includes at least one of the following: TDD uplink and downlink configuration; a first frame structure, in which all time units in the first frame structure correspond to downlink transmission opportunities; and a second frame structure, in which all time units in the second frame structure correspond to uplink transmission opportunities. This enables uplink and downlink transmission opportunities to be available at any time, reducing the transmission latency at the air interface and allowing the TDD system to achieve the extremely low air interface latency of the FDD system. Attached Figure Description

[0052] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0053] Figure 1 This is a schematic diagram of existing latency reduction methods;

[0054] Figure 2 This is a block diagram of a wireless communication system applicable to embodiments of this application;

[0055] Figure 3 This is one of the flowcharts of the transmission method provided in the embodiments of this application;

[0056] Figure 4 This is one of the schematic diagrams of the frame structure provided in the embodiments of this application;

[0057] Figure 5 This is a second schematic diagram of the frame structure provided in the embodiments of this application;

[0058] Figure 6 This is the third schematic diagram of the frame structure provided in the embodiments of this application;

[0059] Figure 7a and Figure 7b This is a diagram of the existing configuration;

[0060] Figure 8 This is the fourth schematic diagram of the frame structure provided in the embodiments of this application;

[0061] Figure 9 This is the second flowchart of the transmission method provided in the embodiments of this application;

[0062] Figure 10 This is one of the schematic diagrams of the transmission device provided in the embodiments of this application;

[0063] Figure 11 This is a second schematic diagram of the transmission device provided in the embodiments of this application;

[0064] Figure 12 This is a schematic diagram of the communication device provided in the embodiments of this application. Detailed Implementation

[0065] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0066] The term "comprising," and any variations thereof, used in the specification and claims of this application, is intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus. Furthermore, the use of "and / or" in the specification and claims indicates at least one of the connected objects, such as A and / or B, indicating the inclusion of A alone, B alone, or both A and B.

[0067] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0068] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. However, the following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description, although these technologies can also be applied to applications other than NR systems, such as 6th Generation (6G) communication systems.

[0069] To reduce air interface transmission latency, various solutions have been developed, including short SR cycles, uplink pre-scheduling, scheduling-free scheduling (indicated by downlink control information (DCI)), semi-persistent scheduling (SPS) (indicated by radio resource control (RRC) or DCI), 1ms frame structure, self-contained time slots, and large subcarrier spacing.

[0070] While the above-mentioned schemes can reduce latency to some extent in Time Division Duplex (TDD) systems, the latency reduction effect of any scheme is limited by the uplink and downlink switching time of the TDD system itself. That is, uplink and / or downlink transmission opportunities occur in a time-division manner, and there is always a probability of waiting for transmission opportunities. This is the fundamental problem that TDD systems have a bottleneck in latency optimization compared to Frequency Division Duplex (FDD) systems. The length of the transmission waiting time is related to the frame structure.

[0071] For FDD systems, the frequency bands are generally in the low to mid-frequency range. Standards and hardware limitations restrict the size of the subcarrier spacing that can be used (15K, 30K, 60K). The reduction in air interface latency is limited by the size of the subcarrier spacing that can be used. TDD does not have this problem. Therefore, to achieve the best air interface latency performance, the focus should be on optimizing the air interface latency of the TDD system.

[0072] TDD full-duplex systems can achieve the low latency of FDD systems, but industrial implementation is extremely difficult.

[0073] To address the issue of large overall latency caused by the uplink / downlink switching time in TDD systems, which fails to meet service requirements, a method is proposed. This method configures different frame structures using multiple bandwidth parts (BWPs) / subbands of a TDD carrier. By using time-domain offset, the uplink and downlink transmission opportunities among multiple BWPs / subbands are complementary, forming a transmission mode similar to that of an FDD carrier. That is, in the current time slot / symbol, at least one BWP / subband is an uplink time slot / symbol, and at least one BWP / subband is a downlink time slot / symbol.

[0074] See Figure 2The figure shows a block diagram of a wireless communication system applicable to an embodiment of this application. The wireless communication system includes terminal 21, terminal 22, and network-side device 23. The terminal can also be called a terminal device or user equipment (UE), and can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), or smart home device (home device with wireless communication capabilities). It should be noted that the specific types of terminal 21 and terminal 22 are not limited in this embodiment of the application.

[0075] Network-side device 23 can be a base station or a core network. The base station can be referred to as a node B, evolved node B, access point, base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), B node, evolved B node (gNB), home B node, home evolved B node, WLAN access point, WiFi node, transmitting and receiving point (TRP), radio access network node, or any other suitable term in the field. As long as the same technical effect is achieved, the base station is not limited to the specified technical terms. It should be noted that in this application embodiment, only the base station in the NR system is used as an example, but the specific type of base station is not limited.

[0076] See Figure 3 This application provides a transmission method, the specific steps of which include: step 301.

[0077] Step 301: The terminal receives first information, which is used to determine at least two frame structures;

[0078] The frame structure includes one or more of the following:

[0079] (1) TDD uplink and downlink configuration (or described as TDD uplink and / or downlink configuration, including TDD uplink and downlink general configuration and TDD uplink and downlink dedicated configuration, i.e. TDD-UL-DL-ConfigCommon and TDD-UL-DL-ConfigDedicated in the 3GPP standard);

[0080] (2) The first frame structure, where all time units in the first frame structure correspond to downlink transmission opportunities;

[0081] The first frame structure can correspond to the full downlink (SDL) structure.

[0082] (3) Second frame structure, where all time units in the second frame structure correspond to uplink transmission opportunities.

[0083] The second frame structure corresponds to the supplementary uplink (SUL) structure.

[0084] It should be noted that the frame structure is not specifically limited in the embodiments of this application, as long as the two BWPs or subbands are basically complementary (there may be exceptions for individual symbols), such as configuration 1 and configuration 2.

[0085] Configuration 1: The frame structure of subband / BWP1 is DSUUU, and the frame structure of subband / BWP2 is DDSUU.

[0086] Configuration 2: The frame structure of subband / BWP1 is DDDDDDSUU, and the frame structure of subband / BWP2 is DSUUUUUUUU.

[0087] The above "D" represents downlink, "U" represents uplink, and "S" represents a special slot. For example, a special slot may include: D symbol, GAP (gap) symbol, and U symbol. This special slot is used for uplink and downlink slot / subframe conversion.

[0088] Taking a complementary frame structure with two BWP / subbands as an example, the opportunities for transmitting the Sounding Reference Signal (SRS) of different BWP / subbands can be at the same time or at different times.

[0089] See Figure 4 The frame structure of BWP A is: DSUUUUUUUU, and the frame structure of BWP B is: UUDDDDDDDS.

[0090] Alternatively, we could consider using the frame structure currently supported by the industry as a basis, while reserving uplink transmission opportunities for SRS.

[0091] See Figure 5 The frame structure of BWP 1 is: DSUUUUUUUU, and the frame structure of BWP 2 is: UUDDDDDDDS.

[0092] Alternatively, it can also support a scenario where uplink and downlink transmission opportunities are completely complementary, see [link to relevant documentation]. Figure 6 .

[0093] The frame structure of BWP 1 is: UUUUUUUUUU, and the frame structure of BWP 2 is: DDDDDDDDDD.

[0094] In one embodiment of this application, the frame structure is suitable for a general TDD uplink / downlink configuration or a dedicated TDD uplink / downlink configuration.

[0095] In one embodiment of this application, the first information is used to determine at least two frame structures for a specified cell or a specified resource unit.

[0096] In one embodiment of this application, the first information includes one or more of the following:

[0097] (1) Subcarrier Spacing;

[0098] (2) Uplink and / or downlink transmission period (dl-UL-TransmissionPeriodicity);

[0099] (3) Number of uplink and / or downlink slots (nrofDownlinkSlots and / or nrofUplinkSlots);

[0100] (4) Number of uplink and / or downlink symbols (nrofDownlinkSymbols and / or nrofUplinkSymbols).

[0101] In one embodiment of this application, the resource unit is N consecutive resource blocks in the same TDD carrier, where N is greater than or equal to 1.

[0102] Optionally, resource blocks include, but are not limited to, physical resource blocks (PRBs) and subcarriers.

[0103] In one embodiment of this application, the resource unit is a BWP or a sub-band.

[0104] In one embodiment of this application, the number of resource units is an integer greater than 1.

[0105] In one embodiment of this application, the method further includes:

[0106] Based on the first information, the terminal determines the uplink and / or downlink transmission opportunities of different resource units in the TDD carrier at the first moment.

[0107] In one embodiment of this application, the method further includes:

[0108] The terminal receives second information, which indicates the time-domain offset of at least a portion of the resource units.

[0109] In one embodiment of this application, the method further includes:

[0110] The terminal determines the uplink and / or downlink transmission opportunities of different resource units in the TDD carrier at the second time based on the first and second information.

[0111] In one embodiment of this application, at least one resource unit is configured as a third frame structure, which sequentially includes a first part, a second part, and a third part. Each time unit in the first part corresponds to an uplink transmission opportunity, each time unit in the second part corresponds to a downlink transmission opportunity, and the third part is the interval between the transition between downlink transmission opportunities and uplink transmission opportunities.

[0112] In one embodiment of this application, the method further includes:

[0113] When different frame structures are configured for different TDD carriers, the terminal receives third information indicating the time slot offset of the TDD carrier.

[0114] In one embodiment of this application, the method further includes:

[0115] The terminal determines the uplink and / or downlink transmission opportunities of different TDD carriers at the third time point based on the first and third information.

[0116] In this embodiment, multiple BWPs / subbands of a TDD carrier are configured with different frame structures, and uplink and downlink transmission opportunities among multiple BWPs / subbands are made complementary through time-domain offset. That is, at least one BWP / subband of the current time slot / symbol is an uplink time slot / symbol, and at least one BWP / subband is a downlink time slot / symbol (some symbols may have only uplink or downlink transmission opportunities). In this way, when service data arrives at any time, it will immediately obtain downlink or uplink resources, reducing uplink and downlink air interface transmission waiting time.

[0117] Currently, the 3rd Generation Partnership Project (3GPP) standard only supports cell-level and user-level frame structure configuration; it does not yet support different BWP / subband configuration frame structure parameters for the same carrier, such as... Figure 7a and Figure 7b As shown.

[0118] To achieve the ultimate latency in single-carrier scenarios, this application proposes a scheme with complementary frame structures for different BWP / subband configurations, which has the following two implementation methods:

[0119] Method 1 supports configuring different frame structures for different BWPs / subbands. The frame structure is a frame structure supported by the existing standard (in a frame structure, the downlink transmission opportunity comes first, the GAP comes in the middle, and the uplink transmission opportunity comes last). It also supports time domain offset for different BWPs / subbands to achieve the effect of complementary frame structures.

[0120] Example 1:

[0121] For frame structure configuration: Add a frame structure configuration field to the message unit of BWP / subband, and modify the description of the cell's frame structure configuration field to the frame structure of the cell or BWP / subband.

[0122] For slot offset configuration, different BWPs / subbands can work together asynchronously, and slot offset parameters can be optionally configured for BWPs / subbands.

[0123] Taking BWP as an example, the modifications to the frame structure and slot offset are as follows:

[0124]

[0125]

[0126] The description of the frame structure is modified as follows, including either cell-level or sub-band-level:

[0127] The IE TDD-UL-DL-ConfigCommon determines the cell or BWP specificUplink / Downlink TDD configuration.

[0128] Method 2: Different BWPs / subbands are configured with different frame structures, with at least one BWP / subband having a completely new frame structure, i.e., uplink first, downlink in the middle, and gap at the end, such as UUDDDDDDDS. Figure 8 As shown:

[0129] Combined with other BWP / subband standard frame structures (corresponding frame structure is DSUUUUUUUU), it forms a complementary uplink and downlink TDD working mode.

[0130] In the embodiments of this application, to address the bottleneck problem of reducing latency in TDD systems (i.e., air interface transmission waiting latency), a scheme is proposed to configure complementary frame structures on different resource units (such as BWP / subbands). This ensures that uplink and downlink transmission opportunities are available at any given time, reducing air interface transmission waiting latency and achieving the extremely low air interface latency effect of FDD systems. If a 2.5 millisecond (ms) dual-cycle frame structure is used, with a scheduling granularity of enhanced device capabilities CAP2 and 2OS, the air interface transmission waiting latency accounts for 31%-73%. After adopting the aforementioned complementary TDD, the air interface transmission waiting latency can be reduced to near zero.

[0131] Meanwhile, by configuring different frame structures with different BWP / subbands, the industry only needs to support two fixed frame structure configurations. By adjusting the size of the BWP / subband bandwidth, any uplink and downlink time slot ratio can be achieved to meet various business needs of customers.

[0132] Finally, the embodiments of this application do not need to be based on the TDD co-band full-duplex mode; they can be achieved based on adjacent channel full-duplex. Adjacent channels will result in a 40dB loss in the Adjacent Channel Leakage Ratio (ACLR), thus reducing the impact of adjacent channel interference and lowering the difficulty of industrial implementation.

[0133] See Figure 9 This application provides a transmission method, the specific steps of which include:

[0134] Step 901: The network-side device sends first information, which is used to determine at least two frame structures, the frame structures including one or more of the following:

[0135] (1) TDD uplink and downlink configuration;

[0136] (2) The first frame structure, where all time units in the first frame structure correspond to downlink transmission opportunities;

[0137] (3) Second frame structure, where all time units in the second frame structure correspond to uplink transmission opportunities.

[0138] In one embodiment of this application, the frame structure is suitable for a general TDD uplink / downlink configuration or a dedicated TDD uplink / downlink configuration.

[0139] In one embodiment of this application, the first information is used to determine at least two frame structures for a specified cell or a specified resource unit.

[0140] In one embodiment of this application, the first information includes one or more of the following:

[0141] (1) Subcarrier spacing;

[0142] (2) Uplink and / or downlink transmission cycle;

[0143] (3) Number of uplink and / or downlink time slots;

[0144] (4) Number of up and / or down signs.

[0145] In one embodiment of this application, the method further includes:

[0146] The network-side device sends a second message indicating the time-domain offset of at least a portion of the resource units.

[0147] In one embodiment of this application, at least one resource unit is configured as a third frame structure, which sequentially includes a first part, a second part, and a third part. Each time unit in the first part corresponds to an uplink transmission opportunity, each time unit in the second part corresponds to a downlink transmission opportunity, and the third part is the interval between the transition between downlink transmission opportunities and uplink transmission opportunities.

[0148] In one embodiment of this application, the method further includes:

[0149] When different frame structures are configured for different TDD carriers, the network-side device sends third information indicating the time slot offset of the TDD carrier.

[0150] In this embodiment, the network-side device sends first information to the terminal, enabling the terminal to determine at least two frame structures based on the first information. The frame structure includes at least one of the following: TDD uplink / downlink configuration; a first frame structure, in which all time units in the first frame structure correspond to downlink transmission opportunities; and a second frame structure, in which all time units in the second frame structure correspond to uplink transmission opportunities. This ensures that uplink and downlink transmission opportunities are available at any given time, reducing air interface transmission latency and enabling the TDD system to achieve the extremely low air interface latency of the FDD system.

[0151] See Figure 10 This application provides a transmission device applied to a terminal. The device 1000 includes:

[0152] A first receiving module 1001 is configured to receive first information, the first information being used to determine at least two frame structures; the frame structures include at least one of the following: TDD uplink / downlink configuration; a first frame structure, in which all time units in the first frame structure correspond to downlink transmission opportunities; and a second frame structure, in which all time units in the second frame structure correspond to uplink transmission opportunities.

[0153] In one embodiment of this application, the frame structure is suitable for a general TDD uplink / downlink configuration or a dedicated TDD uplink / downlink configuration.

[0154] In one embodiment of this application, the first information is used to determine at least two frame structures for a specified cell or a specified resource unit.

[0155] In one embodiment of this application, the first information includes one or more of the following:

[0156] (1) Subcarrier spacing;

[0157] (2) Uplink and / or downlink transmission cycle;

[0158] (3) Number of uplink and / or downlink time slots;

[0159] (4) Number of up and / or down signs.

[0160] In one embodiment of this application, the at least two frame structures satisfy the following: the frame structures of different resource units of the TDD carrier are different.

[0161] In one embodiment of this application, the resource unit is N consecutive resource blocks in the same TDD carrier, where N is greater than or equal to 1.

[0162] Optionally, resource blocks include, but are not limited to, PRBs, subcarriers, etc.

[0163] In one embodiment of this application, the resource unit is a BWP or a sub-band.

[0164] In one embodiment of this application, the number of resource units is an integer greater than 1.

[0165] In one embodiment of this application, the apparatus further includes:

[0166] The first determining module is used to determine, based on the first information, the uplink transmission opportunity and / or downlink transmission opportunity of different resource units in the TDD carrier at the first moment.

[0167] In one embodiment of this application, the apparatus further includes:

[0168] The second receiving module is used to receive second information, which indicates the time-domain offset of at least a portion of the resource units.

[0169] In one embodiment of this application, the apparatus further includes:

[0170] The second determining module is used to determine, based on the first information and the second information, the uplink transmission opportunities and / or downlink transmission opportunities of different resource units in the TDD carrier at the second time.

[0171] In one embodiment of this application, at least one resource unit is configured as a third frame structure, which sequentially includes a first part, a second part, and a third part. Each time unit in the first part corresponds to an uplink transmission opportunity, each time unit in the second part corresponds to a downlink transmission opportunity, and the third part is the interval between the transition between downlink transmission opportunities and uplink transmission opportunities.

[0172] In one embodiment of this application, the apparatus further includes:

[0173] The third receiving module is used to receive third information, which indicates the time slot offset of the TDD carrier, when it supports configuring different frame structures for different TDD carriers.

[0174] In one embodiment of this application, the apparatus further includes:

[0175] The third determining module is used to determine the uplink and / or downlink transmission opportunities of different TDD carriers at the third time point based on the first information and the third information.

[0176] The apparatus provided in this application embodiment can achieve... Figure 3 The various processes implemented in the method embodiments shown achieve the same technical effects, and will not be described again here to avoid repetition.

[0177] See Figure 11 This application provides a transmission device applied to a network-side device. The device 1100 includes:

[0178] The first sending module 1101 is used to send first information, which is used to determine at least two frame structures; the frame structure includes at least one of the following: TDD uplink / downlink configuration; a first frame structure, in which all time units in the first frame structure correspond to downlink transmission opportunities; and a second frame structure, in which all time units in the second frame structure correspond to uplink transmission opportunities.

[0179] In one embodiment of this application, the first information includes one or more of the following:

[0180] (1) Subcarrier spacing;

[0181] (2) Uplink and / or downlink transmission cycle;

[0182] (3) Number of uplink and / or downlink time slots;

[0183] (4) Number of up and / or down signs.

[0184] In one embodiment of this application, the first information is used to determine at least two frame structures for a specified cell or a specified resource unit.

[0185] In one embodiment of this application, the at least two frame structures satisfy the following: the frame structures of different resource units of the TDD carrier are different.

[0186] In one embodiment of this application, the apparatus further includes:

[0187] The second sending module is used to send second information, which indicates the time domain offset of at least a portion of the resource units.

[0188] In one embodiment of this application, at least one resource unit is configured as a third frame structure, which sequentially includes a first part, a second part, and a third part. Each time unit in the first part corresponds to an uplink transmission opportunity, each time unit in the second part corresponds to a downlink transmission opportunity, and the third part is the interval between the transition between downlink transmission opportunities and uplink transmission opportunities.

[0189] In one embodiment of this application, the apparatus further includes:

[0190] The third transmission module is used to transmit third information, which indicates the time slot offset of the TDD carrier, when it supports configuring different frame structures for different TDD carriers.

[0191] The apparatus provided in this application embodiment can achieve... Figure 9 The various processes implemented in the method embodiments shown achieve the same technical effects, and will not be described again here to avoid repetition.

[0192] like Figure 12 As shown, this application embodiment also provides a communication device 1200, including a processor 1201, a memory 1202, and a program or instructions stored in the memory 1202 and executable on the processor 1201. When the program or instructions are executed by the processor 1201, they implement the above-mentioned... Figure 3 or Figure 9 The various processes in the method embodiments can achieve the same technical effect. To avoid repetition, they will not be described again here.

[0193] This application embodiment also provides a readable storage medium storing a program or instructions that, when executed by a processor, implement the above-described functionality. Figure 3 or Figure 9 The various processes of the method embodiments shown can achieve the same technical effect, and will not be described again here to avoid repetition.

[0194] The processor is the processor in the first or second communication device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as a computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0195] The steps of the methods or algorithms described in this application can be implemented in hardware or by executing software instructions on a processor. The software instructions can consist of corresponding software modules, which can be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, portable hard disk, read-only optical disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor, enabling the processor to read information from and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and storage medium can be housed in an ASIC. Alternatively, the ASIC can be housed in a core network interface device. Of course, the processor and storage medium can also exist as discrete components in the core network interface device.

[0196] Those skilled in the art will recognize that, in one or more of the examples above, the functions described in this application can be implemented using hardware, software, firmware, or any combination thereof. When implemented in software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transfer of a computer program from one place to another. Storage media can be any available medium accessible to a general-purpose or special-purpose computer.

[0197] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above description is only a specific embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solution of this application should be included within the scope of protection of this application.

[0198] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, embodiments of this application can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of this application can take the form of computer program products implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0199] This application describes embodiments of methods, apparatus (systems), and computer program products according to embodiments of this application with reference to flowchart illustrations and / or block diagrams. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0200] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0201] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0202] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of this application. Therefore, if these modifications and variations to the embodiments of this application fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

Claims

1. A transmission method, characterized in that, include: The terminal receives the first information; The first information is used to determine at least two frame structures; The frame structure includes at least one of the following: Time Division Multiplexing (TDD) uplink and downlink configuration; The first frame structure, where all time units in the first frame structure correspond to downlink transmission opportunities; The second frame structure, where all time units in the second frame structure correspond to uplink transmission opportunities; The frame structure is applicable to either a general TDD uplink / downlink configuration or a dedicated TDD uplink / downlink configuration. The at least two frame structures satisfy the following: the frame structures of different resource units of the TDD carrier are different; At least one resource unit is configured as a third frame structure, which sequentially includes a first part, a second part, and a third part. Each time unit in the first part corresponds to an uplink transmission opportunity, each time unit in the second part corresponds to a downlink transmission opportunity, and the third part is the interval between the transition between downlink transmission opportunities and uplink transmission opportunities.

2. The method according to claim 1, characterized in that, The first information is used to determine at least two frame structures for a specified cell or a specified resource unit.

3. The method according to claim 1, characterized in that, The first information includes one or more of the following: Subcarrier spacing; Uplink and / or downlink transmission cycle; Number of uplink and / or downlink time slots; Number of up and / or down symbols.

4. The method according to claim 1, characterized in that, The method further includes: Based on the first information, the terminal determines the uplink and / or downlink transmission opportunities of different resource units in the TDD carrier at the first moment.

5. The method according to claim 1, characterized in that, The method further includes: The terminal receives second information, which indicates the time-domain offset of at least a portion of the resource units.

6. The method according to claim 5, characterized in that, The method further includes: The terminal determines the uplink and / or downlink transmission opportunities of different resource units in the TDD carrier at the second time based on the first and second information.

7. The method according to claim 1, characterized in that, The method further includes: When different frame structures are configured for different TDD carriers, the terminal receives third information indicating the time slot offset of the TDD carrier.

8. The method according to claim 7, characterized in that, The method further includes: The terminal determines the uplink and / or downlink transmission opportunities of different TDD carriers at the third time point based on the first and third information.

9. The method according to claim 1, characterized in that, The resource unit is N consecutive resource blocks in the same TDD carrier, where N is greater than or equal to 1.

10. The method according to claim 1, characterized in that, The resource unit is either a bandwidth portion (BWP) or a subband.

11. A transmission method, characterized in that, include: The network-side device sends first information, which is used to determine at least two frame structures; The frame structure includes at least one of the following: TDD uplink / downlink configuration; a first frame structure, in which all time units in the first frame structure correspond to downlink transmission opportunities; and a second frame structure, in which all time units in the second frame structure correspond to uplink transmission opportunities. The frame structure is applicable to either a general TDD uplink / downlink configuration or a dedicated TDD uplink / downlink configuration. The at least two frame structures satisfy the following: the frame structures of different resource units of the TDD carrier are different; At least one resource unit is configured as a third frame structure, which sequentially includes a first part, a second part, and a third part. Each time unit in the first part corresponds to an uplink transmission opportunity, each time unit in the second part corresponds to a downlink transmission opportunity, and the third part is the interval between the transition between downlink transmission opportunities and uplink transmission opportunities.

12. The method according to claim 11, characterized in that, The first information includes one or more of the following: Subcarrier spacing; Uplink and / or downlink transmission cycle; Number of uplink and / or downlink time slots; Number of up and / or down symbols.

13. The method according to claim 11, characterized in that, The first information is used to determine at least two frame structures for a specified cell or a specified resource unit.

14. The method according to claim 11, characterized in that, The method further includes: The network-side device sends a second message indicating the time-domain offset of at least a portion of the resource units.

15. The method according to claim 11, characterized in that, The method further includes: When different frame structures are configured for different TDD carriers, the network-side device sends third information indicating the time slot offset of the TDD carrier.

16. A transmission device applied to a terminal, characterized in that, include: A first receiving module is configured to receive first information, the first information being used to determine at least two frame structures; The frame structure includes at least one of the following: TDD uplink / downlink configuration; a first frame structure, in which all time units in the first frame structure correspond to downlink transmission opportunities; and a second frame structure, in which all time units in the second frame structure correspond to uplink transmission opportunities. The frame structure is applicable to either a general TDD uplink / downlink configuration or a dedicated TDD uplink / downlink configuration. The at least two frame structures satisfy the following: the frame structures of different resource units of the TDD carrier are different; At least one resource unit is configured as a third frame structure, which sequentially includes a first part, a second part, and a third part. Each time unit in the first part corresponds to an uplink transmission opportunity, each time unit in the second part corresponds to a downlink transmission opportunity, and the third part is the interval between the transition between downlink transmission opportunities and uplink transmission opportunities.

17. A transmission device, applied to network-side equipment, characterized in that, include: A first sending module is used to send first information, the first information being used to determine at least two frame structures; The frame structure includes at least one of the following: TDD uplink / downlink configuration; a first frame structure, in which all time units in the first frame structure correspond to downlink transmission opportunities; and a second frame structure, in which all time units in the second frame structure correspond to uplink transmission opportunities. The frame structure is applicable to either a general TDD uplink / downlink configuration or a dedicated TDD uplink / downlink configuration. The at least two frame structures satisfy the following: the frame structures of different resource units of the TDD carrier are different; At least one resource unit is configured as a third frame structure, which sequentially includes a first part, a second part, and a third part. Each time unit in the first part corresponds to an uplink transmission opportunity, each time unit in the second part corresponds to a downlink transmission opportunity, and the third part is the interval between the transition between downlink transmission opportunities and uplink transmission opportunities.

18. A communication device, comprising: A processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the method as claimed in any one of claims 1 to 15.

19. A readable storage medium, characterized in that, The readable storage medium stores a program that, when executed by a processor, implements the steps of the method as described in any one of claims 1 to 15.

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