CN112118630A

CN112118630A - Resource allocation method, device and storage medium

Info

Publication number: CN112118630A
Application number: CN201910536895.3A
Authority: CN
Inventors: 董蕾; 苏宏家; 向铮铮; 卢磊
Original assignee: Chengdu Huawei Technology Co Ltd
Current assignee: Chengdu Huawei Technology Co Ltd
Priority date: 2019-06-20
Filing date: 2019-06-20
Publication date: 2020-12-22
Anticipated expiration: 2039-06-20
Also published as: CN112118630B

Abstract

The embodiment of the application provides a resource allocation method, a resource allocation device and a storage medium. The method comprises the following steps: determining the service characteristics corresponding to data to be sent; according to the service characteristics and the subcarrier intervals, determining the number of symbols and the number of short interception time slots for fast interception and AGC, wherein the number of symbols for fast interception and AGC is different corresponding to different subcarrier intervals, and/or the number of short interception time slots for fast interception and AGC is different corresponding to different subcarrier intervals; and carrying out rapid interception and AGC according to the number of symbols for rapid interception and AGC and the number of short interception time slots, and selecting a target time-frequency resource which is used for transmitting data to be transmitted. The embodiment of the application is suitable for a flexibly configurable frame structure, so that the probability of resource selection collision caused by selecting at least partially repeated resources between terminal equipment in a 5G communication system or a future communication system can be reduced.

Description

Resource allocation method, device and storage medium

Technical Field

Embodiments of the present disclosure relate to wireless communications technologies, and in particular, to a method, an apparatus, and a storage medium for resource allocation.

Background

As wireless communication technology has been developed, the demand for proximity services for understanding and communicating with surrounding people or things has been gradually increased, and thus, in a network of Long Term Evolution (LTE) technology, the 3rd generation partnership project (3 GPP) proposes a vehicle-to-anything (V2X) networking technology in which a vehicle communicates with anything. The V2X communication can support communication scenarios with and without network coverage, and its resource allocation mode includes network device scheduling mode and terminal device self-selection mode. The network device scheduling mode is mainly applied to V2X communication in a communication scene with network coverage, and the network device performs resource allocation in a centralized manner according to the reporting condition of a Buffer State Report (BSR) of the terminal device; the terminal device self-selection mode is mainly applied to V2X communication in a communication scene without network coverage, and the terminal device can only select resources to carry out V2X communication due to the fact that unified resource management of the network device is not available.

For the terminal device self-selection mode, how to reduce the probability of resource selection collision caused by selecting at least partially repeated resources between terminal devices in a 5G communication system or a future communication system is a considerable problem.

Disclosure of Invention

The embodiment of the application provides a resource allocation method, a resource allocation device and a storage medium, so that the probability of resource selection collision caused by selecting at least partially repeated resources among terminal devices in a 5G communication system or a future communication system is reduced.

In order to achieve the above object, the embodiments of the present application provide the following technical solutions:

in a first aspect, an embodiment of the present application provides a resource allocation method, including: determining the service characteristics corresponding to data to be sent; according to the service characteristics and the subcarrier intervals, determining the number of symbols and the number of short interception time slots for fast interception and AGC, wherein the number of symbols for fast interception and AGC is different corresponding to different subcarrier intervals, and/or the number of short interception time slots for fast interception and AGC is different corresponding to different subcarrier intervals; and carrying out rapid interception and AGC according to the number of symbols for rapid interception and AGC and the number of short interception time slots, and selecting a target time-frequency resource which is used for transmitting data to be transmitted.

Because the number of symbols and the number of short listening time slots for fast listening and AGC are determined according to the service characteristics and the subcarrier intervals corresponding to the data to be sent, when the service characteristics and/or the subcarrier intervals corresponding to the data to be sent are different, the terminal equipment still adopts a terminal equipment self-selection mode to perform resource selection, and the method is suitable for a flexibly configurable frame structure, so that the probability of resource selection collision caused by selecting at least part of repeated resources among the terminal equipment can be reduced in a 5G communication system or a future communication system.

Optionally, the determining the number of symbols and the number of short listening slots for fast listening and AGC according to the service characteristics and the subcarrier spacing may include:

according to the historical interception information of m time slots before the time slot n, in the time window n + T₁,n+T₂]In randomly selecting a time slot n + T_yWherein, the data to be sent arrives at the time of time slot n, m is a positive integer, T₁≤T₂X is less than or equal to X which represents the maximum time delay value needed to be quickly intercepted, T₁≤T_y≤T₂Time slot n + T_yUpper existence time frequency resource set S_A＝{R_0,y,R_1,y,…,R_k,y,…,R_K,yY denotes a time slot number, k denotes a group of lengths L_subCHK is an integer and is more than or equal to 0 and less than or equal to K;

at n + T_yFrom time-frequency resource set S_A＝{R_0,y,R_1,y,…,R_k,y,…,R_K,ySelect a time frequency resource R_k,yDetermining the window length of fast interception, the number of symbols L for fast interception and AGC, the number of short interception slots M for fast interception, and the time for AGC for different subcarrier intervals and service characteristicsL symbols are divided into N short listening slots { T }₀ ^sl,T₁ ^sl,…,T_N-1 ^sl}，

T_slIs the length of one short listening time slot sSS, T_OFDMIs the length of the L symbols,

represents rounding down, 0 < M < N, and M is a positive integer.

Further, the performing fast listening and AGC according to the number of symbols and the number of short listening slots used for fast listening and AGC, and selecting a target time-frequency resource may include: in short listening slots T₀ ^sl,T₁ ^sl,…,T_M-1 ^slAnd rapidly monitoring in the symbol period, performing AGC in the residual time of the L symbols, and selecting the target time-frequency resource.

Wherein the short listening time slot { T }₀ ^sl,T₁ ^sl,…,T_M-1 ^slPerforming fast interception in the ms, and selecting the target time-frequency resource, may include the following steps:

from [0, M]In the random selection of a value N_initIs the initial value of a counter, and the counting mode of the counter comprises the increment from 0 to N_init-1, or from N_init-1 decrements to 0;

in turn at each short listening slot T₀ ^sl,T₁ ^sl,…,T_M-1 ^slAt time-frequency resource R_k,yStarting rapid interception;

in the rapid interception process, if the current T is intercepted_i ^slTime-frequency resource R in time_k,yIf the RSSI measured value of the resource block RB is greater than the preset threshold value, the RB is determined to be unavailable for transmitting the data to be transmitted, and the time-frequency resource set S is selected_A＝{R_0,y,R_1,y,…,R_k,y,…,R_K,yDeleting the RB, wherein i is more than or equal to 0 and less than or equal to M-1;

if the time frequency resource set is not empty, reselecting a new time frequency resource for rapid monitoring until traversing all RBs corresponding to the time frequency resource set;

and selecting the target time-frequency resource according to the result of the rapid monitoring.

Optionally, the short listening time slot { T₀ ^sl,T₁ ^sl,…,T_M-1 ^slPerforming fast interception in the ms, and selecting the target time-frequency resource, which may further include: if the current T is intercepted_i ^slTime-frequency resource R in time_k,yIf the measured value of the upper RSSI of the RB is less than or equal to the preset threshold value, the counter is added or subtracted by one, and the next short interception time slot is intercepted continuously.

Optionally, the resource allocation method may further include: when the counter is incremented from 0 to N_init-1 or from N_initAnd when the-1 is decreased to 0, the fast interception is ended.

Alternatively, when the counter is incremented from 0 to N_init-1 or from N_init-1 decrementing to 0, ending the fast listen, which may include: when the counter is incremented from 0 to N_init-1 or from N_init-1 decrementing to 0, sending reservation information indicating that the time-frequency resource is occupied and ending the fast listening.

In a second aspect, an embodiment of the present application provides a resource allocation apparatus, including:

the first determining module is used for determining the service characteristics corresponding to the data to be sent;

a second determining module, configured to determine, according to the service characteristics and the subcarrier intervals, the number of symbols and the number of short listening slots used for fast listening and AGC, where the number of symbols used for fast listening and AGC is different for different subcarrier intervals, and/or the number of short listening slots used for fast listening and AGC is different for different subcarrier intervals;

and the selection module is used for carrying out rapid interception and AGC according to the number of the symbols for rapid interception and AGC and the number of the short interception time slots, and selecting target time-frequency resources which are used for transmitting the data to be transmitted.

Based on the same inventive concept, since the principle of the resource allocation apparatus to solve the problem corresponds to the scheme in the method design of the first aspect, the implementation of the resource allocation apparatus may refer to the implementation of the method, and repeated details are not repeated.

On the basis of any one of the possible embodiments of the first aspect or the second aspect, there are also the following possible embodiments:

optionally, the traffic characteristics may include at least one of: time delay, priority, reliability, etc.

If the service characteristics are low delay, high priority and high reliability, the corresponding relationship among the subcarrier interval, the symbol number for fast interception and AGC and the number of short interception time slots includes at least one of the following:

the subcarrier interval is 15kHz, the number of symbols for quick interception and AGC is 1, wherein the number of short interception time slots for quick interception is 4, the length of the short interception time slots is 9us, and the remaining time of the 1 symbol is used for AGC;

the subcarrier interval is 30kHz, the number of symbols for fast interception and AGC is 2, wherein the number of short interception time slots for fast interception is 4, the length of the short interception time slots is 9us, and the remaining time of the 2 symbols is used for AGC;

the subcarrier interval is 60kHz, the number of symbols for fast listening and AGC is 3, wherein the number of short listening slots for fast listening is 4, the length of the short listening slot is 9us, and the remaining time of the 3 symbols is used for AGC.

Or, if the service characteristics are medium delay, medium priority, and high reliability, the correspondence relationship among the subcarrier interval, the number of symbols used for fast sensing and AGC, and the number of short sensing slots includes at least one of:

the subcarrier interval is 15kHz, the number of symbols for fast interception and AGC is 2, wherein the number of short interception time slots for fast interception is 12, the length of the short interception time slots is 9us, and the remaining time of the 2 symbols is used for AGC;

the subcarrier interval is 30kHz, the number of symbols for fast interception and AGC is 4, wherein the number of short interception time slots for fast interception is 12, the length of the short interception time slots is 9us, and the remaining time of the 4 symbols is used for AGC;

the subcarrier interval is 60kHz, the number of symbols for fast listening and AGC is 7, wherein the number of short listening slots for fast listening is 12, the length of the short listening slot is 9us, and the remaining time of the 7 symbols is used for AGC.

Or, if the service characteristics are low delay, high priority, and high reliability, the correspondence relationship among the subcarrier interval, the number of symbols used for fast sensing and AGC, and the number of short sensing slots includes at least one of:

the subcarrier interval is 15kHz, the number of symbols for quick interception is 1, the number of short interception time slots for quick interception is 8, and the length of the short interception time slots is 9 us;

the subcarrier interval is 30kHz, the number of symbols for quick interception is 2, the number of short interception time slots for quick interception is 8, and the length of the short interception time slots is 9 us;

the subcarrier interval is 60kHz, the number of symbols for quick interception is 4, the number of short interception time slots for quick interception is 8, and the length of the short interception time slots is 9 us;

in the three different corresponding relations, the number of symbols used for AGC is all 1.

In a third aspect, an embodiment of the present application provides a resource allocation apparatus, including: a memory and a processor.

Wherein the memory has stored thereon a computer program executable by the processor;

when the computer program is read and executed by the processor, it causes the processor to perform the method according to any of the first aspect.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium, in which a computer program is stored, the computer program including at least one piece of code, the at least one piece of code being executable by a processor and implementing the method according to any one of the first aspect.

In a fifth aspect, an embodiment of the present application provides a chip, on which a computer program is stored, and when the computer program is executed by a processor, the method according to any one of the first aspect is performed.

These and other aspects of the present application will be more readily apparent from the following description of the embodiment(s).

Drawings

Fig. 1 is an exemplary diagram of an application scenario provided in an embodiment of the present application;

fig. 2 is a schematic flowchart of a resource allocation method according to an embodiment of the present application;

FIG. 3 is a diagram of an NR frame structure with an example of subcarrier spacing of 30kHz and 120 kHz;

fig. 4 is a schematic diagram of a time window when data to be transmitted arrives at time slot n;

fig. 5 is a schematic diagram of short listening slot allocation for fast listening and AGC in L symbols according to an embodiment of the present application;

fig. 6 is a specific illustration of short listening slot allocation for fast listening and AGC when the subcarrier spacing is 15kHz according to an embodiment of the present application;

fig. 7 is a specific illustration of short listening slot allocation for fast listening and AGC for 30kHz subcarrier spacing according to an embodiment of the present application;

fig. 8 is a specific illustration of short listening slot allocation for fast listening and AGC for 60kHz subcarrier spacing according to an embodiment of the present application;

fig. 9 is another specific illustration of short listening slot allocation for fast listening and AGC when the subcarrier spacing is 15kHz according to an embodiment of the present application;

fig. 10 is another specific illustration of short listening slot allocation for fast listening and AGC with 30kHz subcarrier spacing according to an embodiment of the present application;

fig. 11 is another specific illustration of short listening slot allocation for fast listening and AGC with a subcarrier spacing of 60kHz according to an embodiment of the present application;

fig. 12 is a further specific illustration of short listening slot allocation for fast listening and AGC when the subcarrier spacing is 15kHz according to an embodiment of the present application;

fig. 13 is a further specific illustration of short listening slot allocation for fast listening and AGC for 30kHz subcarrier spacing according to an embodiment of the present application;

fig. 14 is a further specific illustration of short listening slot allocation for fast listening and AGC when the subcarrier spacing is 60kHz according to an embodiment of the present application;

fig. 15 is a schematic structural diagram of a resource allocation apparatus according to an embodiment of the present application.

Detailed Description

It should be understood that the term "and/or" as used herein is merely one type of association that describes 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 the following, some terms and application scenarios in the embodiments of the present application are explained to facilitate understanding:

device-to-device (D2D) techniques are used to reduce the burden on the cellular network, reduce the battery power consumption of the user equipment, increase the data rate, and meet the requirements of proximity services. The D2D technology allows multiple D2D capable terminal devices to directly discover and communicate directly with or without network infrastructure. In view of the characteristics and advantages of the D2D technology, a car networking application scenario based on the D2D technology is proposed, but due to safety concerns, the requirement for time delay in such a scenario is very high.

V2X communication refers to communication between a vehicle and anything outside, including vehicle to vehicle (V2V), vehicle to pedestrian (V2P), vehicle to infrastructure (V2I), vehicle to network (V2N), as shown in fig. 1.

The V2X communication is a basic technology and a key technology applied in a scene with a very high requirement for communication delay in the future, such as an intelligent automobile, an automatic driving, an intelligent transportation system, and the like, for a high-speed device represented by a vehicle. The V2X communication can support communication scenarios with and without network coverage, and the resource allocation manner thereof can adopt a network device scheduling mode, i.e. mode-3, such as an evolved universal terrestrial radio access network node B (eNB) scheduling mode, and a terminal device self-selection mode, i.e. mode-4. Based on the V2X communication technology, a vehicle user equipment (V-UE) can send some information of itself, such as information of location, speed, intention (e.g., turning, merging, backing) and some non-periodic event-triggered information to surrounding V-UEs, and likewise, the V-UE can receive the information of the surrounding V-UEs in real time. The 3GPP standards organization formally released the first generation LTE V2X communication standard, LTE Release 14, in the early 2017.

The LTE V2X communication solves the requirement of partial foundation in V2X communication, but the LTE V2X communication at present cannot be effectively supported for application scenarios such as full intelligent driving and automatic driving in the future. With the development of New Radio (NR) technology of 5G in the 3GPP standard organization, NR V2X of 5G will be further developed, for example, it can support lower transmission delay, more reliable communication transmission, higher throughput, and better user experience, so as to meet the requirements of wider application scenarios.

A network device, also called a Radio Access Network (RAN) device, is a device that accesses a terminal device to a wireless network, and can provide allocation and release of radio resources for the terminal device. Illustratively, the network device may be a base station in a 5G network, such as a Transmission and Reception Point (TRP), a controller, and the like, which is not limited herein.

A terminal device, which may also be referred to as a User Equipment (UE), terminal, access terminal, subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user equipment, etc. The terminal device can be a wireless terminal or a wired terminal, and the wireless terminal can be a device with a wireless transceiving function and can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal device may be an unmanned aerial vehicle, an internet of things (IoT) device (e.g., a sensor, an electric meter, a water meter, etc.), a V2X device (e.g., a vehicle-mounted communication module or other embedded communication module), a Station (ST) in a Wireless Local Area Network (WLAN), a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication function, a computing device, or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device (also referred to as a wearable smart device). The terminal device may also be a terminal in a next generation communication system, for example, a terminal in a 5G communication system or a terminal in a Public Land Mobile Network (PLMN) for future evolution, a terminal in an NR communication system, and the like, which is not limited herein.

Fig. 2 is a flowchart illustrating a resource allocation method according to an embodiment of the present application. The embodiment of the present application provides a resource allocation method, which may be executed by a resource allocation apparatus, where the resource allocation apparatus may be implemented in a software and/or hardware manner. The resource allocation apparatus may be integrated with the terminal device or the resource allocation apparatus may be the terminal device. This embodiment is exemplified by taking a terminal device as an execution subject.

As shown in fig. 2, the resource allocation method includes:

s201, the terminal device determines the service characteristics corresponding to the data to be sent.

When the terminal equipment has data to be sent to other terminal equipment, the data at this time is data to be sent. For the data to be transmitted, the service corresponding to the data to be transmitted is known by the terminal device, and therefore, further, for the service characteristic corresponding to the data to be transmitted, the terminal device can also be determined.

The respective service characteristics may also be the same or different for different services. For example, if the service characteristics of service a are different from the service characteristics of service B, the data related to service a has different corresponding service characteristics than the data related to service B.

Optionally, the service characteristics may include at least one of: latency, priority and reliability, etc. Specifically, for a service, its service characteristics may be low latency, or high priority, or high reliability, or low latency and high priority, etc.

S202, the terminal device determines the number of symbols and the number of short sensing slots for fast sensing and self gain control (AGC) according to the service characteristics and the subcarrier spacing.

Sub-carrier spacing (SCS), among others, may include, but is not limited to, 15kHz, 30kHz, 60 kHz. The number of symbols for fast acquisition and AGC corresponding to different subcarrier intervals is different, and/or the number of short acquisition slots for fast acquisition and AGC corresponding to different subcarrier intervals is different. It can be understood that, for the same service characteristic, the number of symbols for fast sensing and AGC may be different at different subcarrier intervals; or, for the same service characteristic, when the intervals of different subcarriers are different, the number of short interception time slots for fast interception and AGC can be different; or, for the same service characteristic, the number of symbols for fast sensing and AGC may be different at different subcarrier intervals, and at the same time, the number of short sensing slots for fast sensing and AGC may be different.

Specifically, the service characteristics, the subcarrier intervals, and the correspondence between the number of symbols and the number of short listening slots used for fast listening and AGC may be preset by those skilled in the art according to historical experience or actual requirements, or may also be preset by the network device according to service requirements and sent to the terminal device. When the service characteristic and the subcarrier interval corresponding to the data to be transmitted are determined, the number of symbols and the number of short listening slots for fast listening and AGC can be determined according to the specific service characteristic and the subcarrier interval.

It should be noted that in any embodiment of the present application, the number of symbols used for fast sensing and AGC is not limited to 1. The specific reasons are as follows:

illustratively, if the symbols for fast sensing and AGC are limited to only the first OFDM symbol, the design is adapted to the subcarrier spacing of 15kHz and is strongly related to the frame structure of LTE, whereas in 5G NR-V2X, the frame structure is more flexible: the length of each frame is the same as that of LTE, the frame length is still 10 milliseconds (ms), and the range of a System Frame Number (SFN) is 0-1023; the length of each subframe is still 1ms, and the subframe number in one frame is 0-9; the slot (slot) to subcarrier spacing relationship within each subframe is shown in table 1:

TABLE 1

The NR frame structure exemplified by the subcarrier spacing of 30kHz and 120kHz is shown in fig. 3. Referring to fig. 3, when the subcarrier spacing is 30kHz, the length of 1 frame is 10ms, which is equal to the length of 10 subframes, and is equal to the length of 20 slots, that is, the length of 1 subframe is 1ms, which is equal to the length of 2 slots, and further, the length of 1 slot is 0.5ms, which is equal to the length of 14 symbols; at a subcarrier spacing of 120kHz, the length of 1 frame is 10ms, which is equal to the length of 10 subframes, and is equal to the length of 80 slots, that is, the length of 1 subframe is 1ms, which is equal to the length of 8 slots, and further, the length of 1 slot is 0.125ms, which is equal to the length of 14 symbols.

If fast sensing and AGC are defined in the first symbol, the number of short sensing slots available for fast sensing is shown in table 2, considering that the minimum sensing unit of Licensed Assisted Access (LAA) in LTE is 9us, i.e. the short sensing slot length is 9us and the time overhead of AGC is 35us, 35us and 18us at 15kHz, 30kHz and 60kHz subcarrier intervals, respectively:

TABLE 2

As can be seen from table 2, for a larger subcarrier spacing, for example, 60kHz, when only one symbol is used for fast sensing and AGC, the number of short sensing slots available for fast sensing is 0. Therefore, it is necessary to design a new resource configuration scheme based on fast sensing for the NR frame structure, i.e., the symbol number and the short sensing slot number for fast sensing and AGC are determined according to the traffic characteristics and the subcarrier spacing mentioned in this step.

S203, the terminal device carries out rapid interception and AGC according to the number of symbols and the number of short interception time slots for rapid interception and AGC, and selects a target time-frequency resource.

In order to reduce the probability of resource selection collision caused by selecting at least partially repeated resources with other terminal devices, the terminal device may determine, based on the historical interception information, whether a certain potential available resource is occupied by other terminal devices, and whether control information of the terminal device can be decoded to obtain characteristic information of the terminal device, such as priority, resource reservation condition, and the like, to pre-determine whether a corresponding available resource exists in a future resource selection time window, and randomly select one available resource for transmission of data to be transmitted.

Specifically, assuming that data to be transmitted arrives at time slot n, as shown in fig. 4, the terminal device checks the historical listening information of m time slots (from n-m to n-1) before time slot n, excluding time window [ n + T ]₁,n+T₂]And randomly selecting one available resource from the rest resource sets for transmitting the data to be transmitted. Here, the time window [ n + T ]₁,n+T₂]Each available resource (or called time frequency resource) in the resource list is defined as R_k,yWhere y denotes a slot number and k denotes a set of lengths L_subCHA set of consecutive subchannels. Illustratively, T₁Less than or equal to 4, T₂Greater than or equal to 20, and T₂Less than or equal to 100.

Due to calendarThe history listening information is common to all mode-4 terminal devices and the low latency of some advanced application scenarios of 5G NR-V2X require the configuration of a smaller T₂The window is long, so that different terminal devices select the same resource, and resource selection collision is caused. In order to solve the above collision problem, a further rapid interception resource selection method based on a historical interception result is proposed. The specific interception steps are as follows:

the terminal device follows the m time slots preceding time slot n (i.e., [ n-m, n-1 ]]M is a positive integer) of the time window [ n + T [₁,n+T₂]In randomly selecting a time slot n + T_yWherein, the data to be sent arrives at the time of time slot n, m is a positive integer, T₁≤T₂X, X representing the maximum delay value required for fast listening, e.g. X3 ms, T₁≤T_y≤T₂Time slot n + T_yUpper existence time frequency resource set S_A＝{R_0,y,R_1,y,…,R_k,y,…,R_K,yY denotes a time slot number, k denotes a group of lengths L_subCHK is an integer and is more than or equal to 0 and less than or equal to K; at n + T_yFrom time-frequency resource set S_A＝{R_0,y,R_1,y,…,R_k,y,…,R_K,ySelect a time frequency resource R_k,yFor different subcarrier intervals and traffic characteristics determined at S202, a window length for fast sensing, a number L of symbols for fast sensing and AGC, a number M of short sensing slots for fast sensing, and a time for AGC are determined, wherein L symbols are divided into N short sensing slots { T }₀ ^sl,T₁ ^sl,…,T_N-1 ^sl}，

T_slIs the length of a short listening slot, T_OFDMIs the length of the L symbols,

represents rounding down, 0 < M < N, and M is a positive integer. Wherein the first M short listening slots are used for fastListening (fast sensing), the remaining time being for AGC, i.e. short listening slot T₀ ^sl,T₁ ^sl,…,T_M-1 ^slIs used for fast listening as shown in fig. 5. Optionally, M may be predefined by a standard or may be configured by a network device. The symbols may be, for example, Orthogonal Frequency Division Multiplexing (OFDM) symbols.

Terminal equipment slave [0, M]In the random selection of a value N_initThe counter may count from 0 to N as the initial value of the counter_init-1, or from N_init-1 decrements to 0; then, in turn, in each short listening slot { T }₀ ^sl,T₁ ^sl,…,T_M-1 ^slAt time-frequency resource R_k,yA fast listen is started.

In the fast interception process, if the current T is intercepted_i ^sl(i is more than or equal to 0 and less than or equal to M-1) time-frequency resource R_k,yWhen the measured value of Received Signal Strength Indicator (RSSI) is greater than a preset threshold (the preset threshold may be defined by a standard or configured by a network side device), determining a time-frequency resource R_k,yThe data to be sent cannot be transmitted, and the rapid monitoring is finished; if the current T is intercepted_i ^slTime-frequency resource R in time_k,yIf the RSSI measured value is less than or equal to the preset threshold value, the counter is added or subtracted by one, and the next short interception time slot is intercepted continuously. This step is cycled through until the counter is incremented from 0 to N_init-1 or from N_init-1 decrements to 0.

Through the process, the target time-frequency resource is selected according to the result of the rapid monitoring.

In the embodiment of the application, a service characteristic corresponding to data to be transmitted is determined, and the number of symbols and the number of short listening slots for fast listening and AGC are determined according to the service characteristic and the subcarrier spacing, wherein the number of symbols for fast listening and AGC corresponding to different subcarrier spacings is different, and/or the number of short listening slots for fast listening and AGC corresponding to different subcarrier spacings is different, fast listening and AGC are further performed according to the number of symbols and the number of short listening slots for fast listening and AGC, a target time-frequency resource is selected, and the target time-frequency resource is used for transmitting the data to be transmitted. Because the number of symbols and the number of short listening time slots for fast listening and AGC are determined according to the service characteristics and the subcarrier intervals corresponding to the data to be sent, when the service characteristics and/or the subcarrier intervals corresponding to the data to be sent are different, the terminal equipment still adopts a terminal equipment self-selection mode to perform resource selection, and the method is suitable for a flexibly configurable frame structure, so that the probability of resource selection collision caused by selecting at least part of repeated resources among the terminal equipment can be reduced in a 5G communication system or a future communication system.

On the basis of the above embodiments, illustratively, the correspondence of the traffic characteristics, the subcarrier spacing, and the number of symbols and the number of short listening slots for fast listening and AGC may be as follows:

if the service characteristics are low delay, high priority and high reliability, the correspondence relationship between the subcarrier interval, the number of symbols for fast sensing and AGC, and the number of short sensing slots may include at least one of the following:

1) the subcarrier interval is 15kHz, the number of symbols for fast listening and AGC is 1, wherein the number of short listening time slots for fast listening is 4, the length of the short listening time slot is 9us, and the remaining time of the 1 symbol is used for AGC. A subcarrier spacing of 15kHz corresponds to a symbol duration of 71.8 us.

2) The subcarrier interval is 30kHz, the number of symbols for fast listening and AGC is 2, wherein the number of short listening time slots for fast listening is 4, the length of the short listening time slot is 9us, and the remaining time of the 2 symbols is used for AGC. A 30kHz subcarrier spacing corresponds to a symbol duration of 35.9 us.

3) The subcarrier interval is 60kHz, the number of symbols for fast listening and AGC is 3, wherein the number of short listening slots for fast listening is 4, the length of the short listening slot is 9us, and the remaining time of the 3 symbols is used for AGC. A subcarrier spacing of 60kHz corresponds to a symbol duration of 17.95 us.

Under the service characteristic, the corresponding relationship among the subcarrier spacing, the number of symbols for fast interception and AGC, and the number of short interception slots for fast interception is shown in table 3:

TABLE 3

A specific example of a 15kHz subcarrier spacing is shown in fig. 6. Referring to fig. 6, when the subcarrier spacing is 15kHz, the length of 1 slot is equal to the length of 14 symbols, and the 1 st symbol is used for fast sensing and AGC, wherein the first 4 short sensing slots of the 1 st symbol are used for fast sensing, and the remaining time of the 1 st symbol is used for AGC.

A specific illustration of a subcarrier spacing of 30kHz is shown in fig. 7. Referring to fig. 7, when the subcarrier interval is 30kHz, the length of 1 slot is equal to the length of 14 symbols, and 2 symbols are used for fast sensing and AGC, wherein the first 4 short sensing slots of 2 symbols are used for fast sensing and the remaining time of 2 symbols is used for AGC.

A specific illustration of a 60kHz subcarrier spacing is shown in fig. 8. Referring to fig. 8, when the subcarrier interval is 60kHz, the length of 1 slot is equal to the length of 14 symbols, and 3 symbols are used for fast sensing and AGC, wherein the first 4 short sensing slots of 3 symbols are used for fast sensing and the remaining time of 3 symbols is used for AGC.

In summary, for services with low latency, high priority, and high reliability, a fast listening window length and AGC configuration adapted to the NR frame structure characteristics is provided, so as to avoid the limitation caused by the design that the fast listening and AGC are limited only in the first symbol (as shown in table 2): the fast listening and AGC are limited to the first symbol, the design is only adapted to the subcarrier spacing of 15kHz, and the NR frame structure has various subcarrier spacings, so that the fast listening window length and AGC configuration without subcarrier spacing needs to be designed, so that the probability of resource selection collision caused by selecting at least partially repeated resources between terminal devices in a 5G communication system or a future communication system can be reduced.

If the service characteristics are medium delay, medium priority and high reliability, the correspondence relationship among the subcarrier interval, the number of symbols for fast sensing and AGC, and the number of short sensing slots may include at least one of:

1) the subcarrier interval is 15kHz, the number of symbols for fast acquisition and AGC is 2, wherein the number of short acquisition time slots for fast acquisition is 12, the length of the short acquisition time slot is 9us, and the remaining time of the 2 symbols is used for AGC. A subcarrier spacing of 15kHz corresponds to a symbol duration of 71.8 us.

2) The subcarrier interval is 30kHz, the number of symbols for fast listening and AGC is 4, wherein the number of short listening time slots for fast listening is 12, the length of the short listening time slot is 9us, and the remaining time of the 4 symbols is used for AGC. A 30kHz subcarrier spacing corresponds to a symbol duration of 35.9 us.

3) The subcarrier interval is 60kHz, the number of symbols for fast listening and AGC is 7, wherein the number of short listening slots for fast listening is 12, the length of the short listening slot is 9us, and the remaining time of the 7 symbols is used for AGC. A subcarrier spacing of 60kHz corresponds to a symbol duration of 17.95 us.

Under the service characteristic, the corresponding relationship among the subcarrier spacing, the number of symbols for fast interception and AGC, and the number of short interception slots for fast interception is shown in table 4:

TABLE 4

A specific example of a 15kHz subcarrier spacing is shown in fig. 9. Referring to fig. 9, when the subcarrier spacing is 15kHz, the length of 1 slot is equal to the length of 14 symbols, and the first 2 symbols are used for fast sensing and AGC, wherein the first 12 short sensing slots of the 2 symbols are used for fast sensing, and the remaining time of the 2 symbols is used for AGC.

A specific illustration of a subcarrier spacing of 30kHz is shown in fig. 10. Referring to fig. 10, when the subcarrier spacing is 30kHz, the length of 1 slot is equal to the length of 14 symbols, and the first 4 symbols are used for fast sensing and AGC, wherein the first 12 short sensing slots of the 4 symbols are used for fast sensing, and the remaining time of the 4 symbols is used for AGC.

A specific illustration of a 60kHz subcarrier spacing is shown in fig. 11. Referring to fig. 11, when the subcarrier spacing is 60kHz, the length of 1 slot is equal to the length of 14 symbols, and the first 7 symbols are used for fast sensing and AGC, wherein the first 12 short sensing slots of the 7 symbols are used for fast sensing, and the remaining time of the 7 symbols is used for AGC.

In summary, for the medium-delay, medium-priority and high-reliability services, a fast listening window length and AGC configuration adapted to the NR frame structure characteristics is provided, so as to avoid the limitation caused by the design that the fast listening and AGC are limited only in the first symbol (as shown in table 2): the fast listening and AGC are limited to the first symbol, the design is only adapted to the subcarrier spacing of 15kHz, and the NR frame structure has various subcarrier spacings, so that the fast listening window length and AGC configuration without subcarrier spacing needs to be designed, so that the probability of resource selection collision caused by selecting at least partially repeated resources between terminal devices in a 5G communication system or a future communication system can be reduced.

If the service characteristics are low delay, high priority and high reliability, the correspondence relationship among the subcarrier interval, the number of symbols for fast sensing and AGC, and the number of short sensing slots may include at least one of:

1) the subcarrier interval is 15kHz, the number of symbols for fast sensing is 1, the number of short sensing time slots for fast sensing is 8, and the length of the short sensing time slot is 9 us. A subcarrier spacing of 15kHz corresponds to a symbol duration of 71.8 us.

2) The subcarrier interval is 30kHz, the number of symbols for fast sensing is 2, the number of short sensing time slots for fast sensing is 8, and the length of the short sensing time slot is 9 us. A 30kHz subcarrier spacing corresponds to a symbol duration of 35.9 us.

3) The subcarrier interval is 60kHz, the number of symbols for fast sensing is 4, the number of short sensing time slots for fast sensing is 8, and the length of the short sensing time slot is 9 us. A subcarrier spacing of 60kHz corresponds to a symbol duration of 17.95 us.

Under the service characteristic, the corresponding relationship among the subcarrier spacing, the number of symbols for fast interception and AGC, and the number of short interception slots for fast interception is shown in table 5:

TABLE 5

A specific example of a 15kHz subcarrier spacing is shown in fig. 12. Referring to fig. 12, when the subcarrier spacing is 15kHz, the length of 1 slot is equal to the length of 14 symbols, and the 1 st symbol is used for fast sensing, wherein 8 short sensing slots of this symbol are used for fast sensing and the 2 nd symbol is used for AGC.

A specific illustration of a subcarrier spacing of 30kHz is shown in fig. 13. Referring to fig. 13, when the subcarrier spacing is 30kHz, the length of 1 slot is equal to the length of 14 symbols, the first 2 symbols are used for fast sensing, 8 short sensing slots of the 2 symbols are used for fast sensing, and the 3rd symbol is used for AGC.

A specific illustration of a 60kHz subcarrier spacing is shown in fig. 14. Referring to fig. 14, when the subcarrier spacing is 60kHz, the length of 1 slot is equal to the length of 14 symbols, the first 4 symbols are used for fast sensing, 8 short sensing slots of the 4 symbols are used for fast sensing, and the 5 th symbol is used for AGC.

In summary, for the services with low latency, high priority and high reliability, a fast listening window length and AGC configuration adapted to the NR frame structure features is provided, where the AGC is fixedly used as one symbol, and the limitation caused by the design that the fast listening and AGC are limited only in the first symbol is avoided (as shown in table 2): the fast listening and AGC are limited to the first symbol, the design is only adapted to the subcarrier spacing of 15kHz, and the NR frame structure has various subcarrier spacings, so that the fast listening window length and AGC configuration without subcarrier spacing needs to be designed, so that the probability of resource selection collision caused by selecting at least partially repeated resources between terminal devices in a 5G communication system or a future communication system can be reduced.

Furthermore, in the above fast listening process, once a certain current T exists_i ^slTime-frequency resource R in time_k,yIf the RSSI measured value is larger than the preset threshold value, the rapid interception is stopped. This means that when the fast snoop ends, the counter may not have been incremented from 0 to N_init-1 or from N_init-1 decrements to 0. In the fast interception technology, the counter is used for staggering the access time of different terminal devices so as to reduce resource selection collision. If only the current T is sensed_i ^slTime-frequency resource R in time_k,yIf the RSSI measurement value is greater than the preset threshold value, the rapid listening is terminated, which may cause the counter to fail to exert its function to the maximum extent, and once the above conditions are satisfied, the terminal device immediately loses the current access opportunity, resulting in the waste of the access opportunity.

In addition, in the above fast listening process, the minimum unit of fast listening is time frequency resource. It should be noted that, in the embodiment of the present application, the time-frequency resource refers to a resource with a fixed length in a frequency domain. And the bandwidth of the time-frequency resource on the frequency domain is the bandwidth corresponding to the data to be sent. Each terminal device sends different data to be sent, and the corresponding bandwidth may also be different.

When all terminal devices use the same method to divide time frequency resources, for example, each time frequency resource is a sub-channel, and the signal receiving strength based on the sub-channel can be used to determine whether to discard the time frequency resource. However, in NR-V2X, the traffic demands of different terminal devices may be different, resulting in different sizes of data packets, so that the number of Resource Blocks (RBs) in each sub-channel and the number of sub-channels for transmitting data to be transmitted may be different for different terminal devices. Therefore, the signal receiving strength based on the time frequency resource cannot accurately and effectively judge whether to discard the time frequency resource.

Therefore, in view of the above problems, further, the embodiment of the present application achieves the effect of improving the fast listening performance by modifying the determination condition whether to end the fast listening and measuring the minimum granularity of the received signal strength.

Specifically, in S203, the terminal device performs fast listening and AGC according to the number of symbols and the number of short listening slots used for fast listening and AGC, and selects a target time-frequency resource, which may include: in short listening slots T₀ ^sl,T₁ ^sl,…,T_M-1 ^slAnd rapidly monitoring in the symbol period, performing AGC in the residual time of the L symbols, and selecting a target time-frequency resource.

Further, in the short listening slot T₀ ^sl,T₁ ^sl,…,T_M-1 ^slPerforming fast interception in the sequence, and selecting a target time-frequency resource, which may include: from [0, M]In the random selection of a value N_initIs the initial value of the counter, and the counting mode of the counter comprises the increment from 0 to N_init-1, or from N_init-1 decrements to 0; in turn at each short listening slot T₀ ^sl,T₁ ^sl,…,T_M-1 ^slAt time-frequency resource R_k,yStarting rapid interception; in the rapid interception process, if the current T is intercepted_i ^slTime-frequency resource R in time_k,yIf the RSSI measured value of the RB is greater than the preset threshold value, the RB is determined to be unavailable for transmitting data to be transmitted, and the time-frequency resource set S is selected_A＝{R_0,y,R_1,y,…,R_k,y,…,R_K,yDeleting the RB, wherein i is more than or equal to 0 and less than or equal to M-1; further, if the time-frequency resource set is not empty, a new time-frequency resource is reselected for rapid monitoring until all RBs corresponding to the time-frequency resource set are traversed; and selecting target time-frequency resources according to the result of the rapid monitoring. Optionally, if the time-frequency resource set is empty, the fast listening is ended.

Wherein, for data to be sent by different terminal devices, the time frequency resource R for fast interception is used_k,yMay correspond to one or more sub-channels, each sub-channel corresponding to a plurality of RBs, so that the RSSI measurement is performed during the fast sensing processAnd judging the magnitude of the quantity value and the preset threshold value by taking the RB as a unit, judging the magnitude of the RSSI measured value and the preset threshold value of one RB each time, determining that the RB can not be used for transmitting data to be transmitted when the RSSI measured value of the RB is greater than the preset threshold value, and deleting the RB from the time-frequency resource set.

Or, in the rapid interception process, if the current T is intercepted_i ^slTime-frequency resource R in time_k,yIf the upper RSSI measured value of the RB is less than or equal to the preset threshold value, the counter is added or subtracted by one, and the next short interception time slot is intercepted continuously.

Optionally, the method may further include: during fast snoop, when the counter is incremented from 0 to N_init-1 or from N_initAnd when the-1 is decreased to 0, the fast interception is ended. Further, when the counter is incremented from 0 to N_init-1 or from N_init-1 decrementing to 0, sending reservation information indicating that the time-frequency resource is occupied and ending the fast listening. Illustratively, the reservation information may be non-decodable information, e.g., all bits "0" or "1". Thus, other terminal equipment receiving the reservation information can determine that the time-frequency resource is occupied and is unavailable within the preset time.

It is understood that, in the above embodiments, the method or the steps implemented by the terminal device may also be implemented by a chip available for the terminal device.

Fig. 15 is a schematic structural diagram of a resource allocation apparatus according to an embodiment of the present application. The resource allocation device may be a terminal device, or may be a chip that can be used for the terminal device. As shown in fig. 15, the resource allocation apparatus 50 of the present embodiment includes: a first determining module 51, a second determining module 52 and a selecting module 53. Wherein:

the first determining module 51 is configured to determine a service characteristic corresponding to data to be sent.

And a second determining module 52, configured to determine the number of symbols and the number of short listening slots for fast listening and AGC according to the service characteristics and the subcarrier spacing. The number of symbols for fast acquisition and AGC corresponding to different subcarrier intervals is different, and/or the number of short acquisition time slots for fast acquisition and AGC corresponding to different subcarrier intervals is different.

And a selection module 53, configured to perform fast listening and AGC according to the number of symbols used for fast listening and AGC and the number of short listening slots, and select a target time-frequency resource, where the target time-frequency resource is used to transmit data to be transmitted.

The resource allocation apparatus described above in this embodiment may be configured to execute the technical solution executed by the terminal device in each corresponding method embodiment, and the implementation principle and the technical effect are similar, where the function of each module may refer to the corresponding description in the method embodiment, and is not described herein again.

Optionally, the service characteristics may include at least one of: time delay, priority, reliability, etc.

In a first implementation manner, if the service characteristics are low latency, high priority, and high reliability, the correspondence relationship between the subcarrier spacing, the number of symbols used for fast sensing and AGC, and the number of short sensing slots includes at least one of the following:

In a second implementation manner, if the service characteristics are medium delay, medium priority, and high reliability, the correspondence relationship among the subcarrier interval, the number of symbols used for fast sensing and AGC, and the number of short sensing slots includes at least one of the following:

In a third implementation manner, if the service characteristics are low latency, high priority, and high reliability, the correspondence between the subcarrier spacing, the symbol number for fast sensing and AGC, and the number of short sensing slots includes at least one of the following:

In some embodiments, the second determining module 52 may be specifically configured to: according to the historical interception information of m time slots before the time slot n, in the time window n + T₁,n+T₂]In randomly selecting a time slot n + T_yWherein, the data to be sent arrives at the time of time slot n, m is a positive integer, T₁≤T₂X is less than or equal to X which represents the maximum time delay value needed to be quickly intercepted, T₁≤T_y≤T₂Time slot n + T_yUpper existence time frequency resource set S_A＝{R_0,y,R_1,y,…,R_k,y,…,R_K,yY denotes a time slot number, x denotes a group of lengths L_subCHA set of consecutive subchannels; at n + T_yFrom time-frequency resource set S_A＝{R_0,y,R_1,y,…,R_k,y,…,R_K,ySelect a time frequency resource R_k,yDetermining the window length of fast interception, the number L of symbols for fast interception and AGC, the number M of short interception time slots for fast interception and the time for AGC according to different subcarrier intervals and service characteristics, wherein K is an integer and is more than or equal to 0 and less than or equal to K, and L symbols are divided into N short interception time slots { T ≦ T₀ ^sl,T₁ ^sl,…,T_N-1 ^sl}，

T_slIs a length of sSS, T_OFDMIs the length of the L symbols,

represents rounding down, 0 < M < N, and M is a positive integer.

Optionally, the selection module 53 may be configured to: in short listening slots T₀ ^sl,T₁ ^sl,…,T_M-1 ^slAnd rapidly monitoring in the symbol period, performing AGC in the residual time of the L symbols, and selecting a target time-frequency resource.

Further, the selection module 53 may be specifically configured to:

in the rapid interception process, if the current T is intercepted_i ^slTime-frequency within a timeResource R_k,yIf the measured value of the received signal strength indicator RSSI of the resource block RB is greater than a preset threshold value, the RB is determined not to be used for transmitting the data to be transmitted, and the time frequency resource set S is selected_A＝{R_0,y,R_1,y,…,R_k,y,…,R_K,yDeleting the RB, wherein i is more than or equal to 0 and less than or equal to M-1;

In some embodiments, the selection module 53 may be further configured to: on hearing the current T_i ^slTime-frequency resource R in time_k,yAnd when the upper RSSI measured value of the RB is less than or equal to the preset threshold value, the counter is added or subtracted by one, and the next short interception time slot is intercepted continuously.

Still further, the selection module 53 may be further configured to: when the counter is incremented from 0 to N_init-1 or from N_initAnd when the-1 is decreased to 0, the fast interception is ended.

Optionally, the resource allocation apparatus may further include: a sending module (not shown). The sending module is used for increasing the counter from 0 to N_init-1 or from N_init-1 decrementing to 0, sending reservation information indicating that the time-frequency resource is occupied and ending the fast listening.

The resource allocation apparatus described above in this embodiment may be configured to execute the technical solution executed by the terminal device in the foregoing method embodiments, and the implementation principle and the technical effect are similar, where the function of each module may refer to the corresponding description in the method embodiments, and is not described here again.

In some embodiments, the first determining module 51, the second determining module 52 and the selecting module 53 may be embedded in a processor in a hardware manner. Alternatively, in a hardware implementation, the sending module may be a transmitter or a transceiver.

Correspondingly, the resource allocation apparatus of the present embodiment may further include a memory for storing a computer program executable by the processor; when the computer program is read and executed by a processor, it causes the processor to perform a method as described in any of the method embodiments above.

The computer program may be implemented in the form of software functional units and may be sold or used as a stand-alone product, and the memory may be any form of computer readable storage medium. Based on such understanding, all or part of the technical solutions of the present application may be embodied in the form of a software product, which includes several instructions to enable a computer device, specifically, a processor, to execute all or part of the steps of the terminal device in the embodiments of the present application. And the aforementioned computer-readable storage media comprise: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation. Each functional module in the embodiments of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.

The integrated module, if implemented in the form of a software functional module 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 may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) 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.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

Claims

1. A method for resource allocation, comprising:

determining the service characteristics corresponding to data to be sent;

according to the service characteristics and the subcarrier intervals, determining the number of symbols and the number of short interception time slots for fast interception and self-gain control AGC, wherein the number of symbols for fast interception and AGC are different corresponding to different subcarrier intervals, and/or the number of short interception time slots for fast interception and AGC are different corresponding to different subcarrier intervals;

and carrying out rapid interception and AGC according to the number of the symbols for rapid interception and AGC and the number of the short interception time slots, and selecting a target time-frequency resource, wherein the target time-frequency resource is used for transmitting the data to be transmitted.

2. The method of claim 1, wherein the traffic characteristics comprise at least one of:

time delay, priority, reliability.

3. The method of claim 2, wherein if the traffic characteristics are low latency, high priority, and high reliability, the correspondence between subcarrier spacing, number of symbols for fast sensing and AGC, and number of short sensing slots comprises at least one of:

the subcarrier interval is 15kHz, the number of symbols for quick interception and AGC is 1, wherein the number of short interception time slots for quick interception is 4, the length of the short interception time slots is 9us, and the residual time of 1 symbol is used for AGC;

the subcarrier interval is 30kHz, the number of symbols for fast interception and AGC is 2, wherein the number of short interception time slots for fast interception is 4, the length of the short interception time slots is 9us, and the remaining time of 2 symbols is used for AGC;

the subcarrier interval is 60kHz, the number of symbols for fast acquisition and AGC is 3, wherein the number of short acquisition time slots for fast acquisition is 4, the length of the short acquisition time slot is 9us, and the remaining time of 3 symbols is used for AGC.

4. The method of claim 2, wherein if the traffic characteristics are medium delay, medium priority, and high reliability, the correspondence between subcarrier spacing, number of symbols for fast sensing and AGC, and number of short sensing slots comprises at least one of:

the subcarrier interval is 15kHz, the number of symbols for fast interception and AGC is 2, wherein the number of short interception time slots for fast interception is 12, the length of the short interception time slots is 9us, and the remaining time of 2 symbols is used for AGC;

the subcarrier interval is 30kHz, the number of symbols for quick interception and AGC is 4, wherein the number of short interception time slots for quick interception is 12, the length of the short interception time slots is 9us, and the residual time of 4 symbols is used for AGC;

the subcarrier interval is 60kHz, the number of symbols for fast acquisition and AGC is 7, wherein the number of short acquisition slots for fast acquisition is 12, the length of the short acquisition slot is 9us, and the remaining time of 7 symbols is used for AGC.

5. The method of claim 2, wherein if the traffic characteristics are low latency, high priority, and high reliability, the correspondence between subcarrier spacing, number of symbols for fast sensing and AGC, and number of short sensing slots comprises at least one of:

wherein, in three different corresponding relations, the number of symbols used for AGC is all 1.

6. The method according to any one of claims 1 to 5, wherein the determining the number of symbols and the number of short sensing slots for fast sensing and AGC according to the traffic characteristics and the subcarrier spacing comprises:

according to the historical interception information of m time slots before the time slot n, in the time window n + T₁,n+T₂]In randomly selecting a time slot n + T_yWherein, the data to be sent arrives at the time of time slot n, m is a positive integer, T₁≤T₂X is less than or equal to X which represents the maximum time delay value needed to be quickly intercepted, T₁≤T_y≤T₂Time slot + T_yUpper existence time frequency resource set S_A＝{R_0,y,R_1,y,…,R_k,y,…,R_K,yY denotes a time slot number, k denotes a group of lengths L_subCHK is an integer and is more than or equal to 0 and less than or equal to K;

at n + T_yFrom time-frequency resource set S_A＝{R_0,y,R_1,y,…,R_k,y,…,R_K,ySelect a time frequency resource R_k,yDetermining window length of fast interception, number of symbols L for fast interception and AGC, number of short interception slots M for fast interception, and time for AGC for different subcarrier intervals and service characteristics, L symbols being divided into N short interception slots { T }₀ ^sl,T₁ ^sl,…,T_N-1 ^sl}，

represents rounding down, 0 < M < N, and M is a positive integer.

7. The method of claim 6, wherein the fast listening and AGC according to the number of symbols and the number of short listening slots for fast listening and AGC selects a target time frequency resource, comprising:

in short listening slots T₀ ^sl,T₁ ^sl,…,T_M-1 ^slAnd rapidly monitoring in the symbol period, performing AGC in the residual time of the L symbols, and selecting the target time-frequency resource.

8. The method according to claim 7, wherein { T } is in a short listening slot₀ ^sl,T₁ ^sl,…,T_M-1 ^slRapidly intercepting in the station, and selecting the target time-frequency resource, wherein the steps comprise:

in the rapid interception process, if the current T is intercepted_i ^slTime-frequency resource R in time_k,yIf the measured value of the received signal strength indicator RSSI of the resource block RB is greater than a preset threshold value, the RB is determined not to be used for transmitting the data to be transmitted, and the time frequency resource set S is selected_A＝{R_0,y,R_1,y,…,R_k,y,…,R_K,yDeleting the RB, wherein i is more than or equal to 0 and less than or equal to M-1;

9. The method according to claim 8, wherein { T } is in a short listening slot₀ ^sl,T₁ ^sl,…,T_M-1 ^slRapidly intercepting in the station, selecting the target time-frequency resource, and further comprising:

if the current T is intercepted_i ^slTime-frequency resource R in time_k,yIf the measured value of the upper RSSI of the RB is less than or equal to the preset threshold value, the counter is added or subtracted by one, and the next short interception time slot is intercepted continuously.

10. The method of claim 8 or 9, further comprising:

when the counter is incremented from 0 to N_init-1 or from N_initAnd when the-1 is decreased to 0, the fast interception is ended.

11. The method of claim 10, wherein the counter is incremented from 0 to N_init-1 or from N_init-1 decrementing to 0, ending the fast listen, including:

when the counter is incremented from 0 to N_init-1 or from N_initWhen the value of-1 is decreased to 0, sending reservation information, wherein the reservation information is used for indicating that the time frequency resources are occupied, and finishing the rapid listening.

12. A resource allocation apparatus, comprising:

a second determining module, configured to determine, according to the service characteristics and the subcarrier intervals, the number of symbols and the number of short listening slots used for fast listening and self-gain control AGC, where the number of symbols used for fast listening and AGC is different for different subcarrier intervals, and/or the number of short listening slots used for fast listening and AGC is different for different subcarrier intervals;

13. The apparatus of claim 12, wherein the traffic characteristics comprise at least one of:

time delay, priority, reliability.

14. The apparatus of claim 13, wherein if the traffic characteristics are low latency, high priority, and high reliability, the correspondence between subcarrier spacing, number of symbols for fast sensing and AGC, and number of short sensing slots comprises at least one of:

15. The apparatus of claim 13, wherein if the traffic characteristics are medium delay, medium priority, and high reliability, the correspondence between subcarrier spacing, number of symbols for fast sensing and AGC, and number of short sensing slots comprises at least one of:

16. The apparatus of claim 13, wherein if the traffic characteristics are low latency, high priority, and high reliability, the correspondence between subcarrier spacing, number of symbols for fast sensing and AGC, and number of short sensing slots comprises at least one of:

17. The apparatus according to any one of claims 12 to 16, wherein the second determining module is specifically configured to:

represents rounding down, 0 < M < N, and M is a positive integer.

18. The apparatus of claim 17, wherein the selection module is configured to:

19. The apparatus of claim 18, wherein the selection module is specifically configured to:

20. The apparatus of claim 19, wherein the selection module is further configured to:

21. The apparatus of claim 19 or 20, wherein the selection module is further configured to:

22. The apparatus of claim 21, further comprising:

a sending module for incrementing from 0 to N at the counter_init-1 or from N_initWhen the value of-1 is decreased to 0, sending reservation information, wherein the reservation information is used for indicating that the time frequency resources are occupied, and finishing the rapid listening.

23. A resource allocation apparatus, comprising:

a memory and a processor; wherein the memory has stored thereon a computer program executable by the processor;

the computer program, when read and executed by the processor, causes the processor to perform the method of any of claims 1-11.

24. A computer-readable storage medium, in which a computer program is stored, the computer program comprising at least one piece of code which is executable by a processor for implementing the method according to any one of claims 1-11.