CN112118630B

CN112118630B - Resource allocation method, device and storage medium

Info

Publication number: CN112118630B
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: 2024-01-05
Anticipated expiration: 2039-06-20
Also published as: CN112118630A

Abstract

The embodiment of the application provides a resource allocation method, a resource allocation device and a storage medium, which relate to the field of communication, in particular to V2X, intelligent driving, intelligent network-connected automobiles, automatic driving or Internet of vehicles and the like. The method comprises the following steps: determining service characteristics corresponding to data to be transmitted; determining the number of symbols and the number of short interception time slots for quick interception and AGC according to service characteristics and subcarrier intervals, wherein the number of symbols for quick interception and AGC corresponding to different subcarrier intervals is different, and/or the number of short interception time slots for quick interception and AGC corresponding to different subcarrier intervals is different; and according to the number of symbols used for fast interception and AGC and the number of short interception time slots, fast interception and AGC are carried out, and a target time-frequency resource is selected for transmitting data to be transmitted. The embodiment of the application is suitable for a flexible and configurable frame structure, so that the probability of resource selection collision caused by the selection of at least partially repeated resources among terminal equipment can be reduced in a 5G communication system or a future communication system.

Description

Resource allocation method, device and storage medium

Technical Field

Embodiments of the present disclosure relate to wireless communication technologies, and in particular, to a method, an apparatus, and a storage medium for allocating resources.

Background

With the development of wireless communication technology, there is an increasing demand for proximity services for resolving and communicating with surrounding persons or things, and therefore, under a network of long term evolution (long term evolution, LTE) technology, the third generation partnership project (the 3rd generation partnership project,3GPP) proposes a vehicle networking technology for communicating with vehicles and everything (V2X). The V2X communication may support communication scenarios with and without network coverage, and the resource allocation manner includes a network device scheduling mode and a terminal device self-selection mode. The network equipment scheduling mode is mainly applied to V2X communication under a communication scene with network coverage, and the network equipment performs resource allocation in a centralized manner according to the reporting condition of a buffer status report (buffer state report, BSR) of the terminal equipment; the terminal equipment self-selection mode is mainly applied to V2X communication under a communication scene without network coverage, and the terminal equipment can only select resources to carry out V2X communication by itself due to the fact that uniform resource management of the network equipment is not available.

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

In order to achieve the above purpose, the embodiment of the present application provides the following technical solutions:

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

Because the number of symbols and the number of short interception time slots used for fast interception 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 select resources, and the method is suitable for a flexible and configurable frame structure, so that the probability of resource selection collision caused by the selection of at least partially repeated resources between 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 interception time slots for fast interception and AGC according to the service characteristic and the subcarrier spacing may include:

based on the history interception information of m time slots before the time slot n, in the time window [ n+T ] ₁ ,n+T ₂ ]In a time slot n+T _y Wherein the data to be transmitted arrives at the time of the time slot n, m is a positive integer, T ₁ ≤T ₂ X is less than or equal to X, X represents the maximum time delay value required to be rapidly intercepted, T ₁ ≤T _y ≤T ₂ Time slot n+T _y Set S of time-frequency resources existing on top _A ＝{R _0,y ,R _1,y ,…,R _k,y ,…,R _K,y Y represents a slot number, k represents a group of lengths L _subCH K is an integer, and K is more than or equal to 0 and less than or equal to K;

at n+T _y Time of day, from a set S of time-frequency resources _A ＝{R _0,y ,R _1,y ,…,R _k,y ,…,R _K,y Selecting a time-frequency resource R _k,y Determining a window length of fast interception, a number of symbols L for fast interception and AGC and a usage for different subcarrier spacing and traffic characteristicsIn the number M of short listening slots for fast listening, and for AGC time, L symbols are divided into N short listening slots { T } ₀ ^sl ,T ₁ ^sl ,…,T _N-1 ^sl }，T _sl For the length of one short listening slot sSS, T _OFDM For the length of L symbols, +.>Represents a downward rounding, 0 < M < N, and M is a positive integer.

Further, the selecting the target time-frequency resource according to the number of symbols for fast interception and AGC and the number of short interception time slots for fast interception and AGC may include: short listening time slot { T ₀ ^sl ,T ₁ ^sl ,…,T _M-1 ^sl And performing fast interception in the process, performing AGC in the residual time of the L symbols, and selecting the target time-frequency resource.

Wherein, in the short interception time slot { T } ₀ ^sl ,T ₁ ^sl ,…,T _M-1 ^sl Fast interception in the } and selecting the target time-frequency resource, which may include the following steps:

from [0, M]A value N is randomly selected _init For the initial value of the counter, 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 { T } ₀ ^sl ,T ₁ ^sl ,…,T _M-1 ^sl In time-frequency resource R _k,y Starting fast interception;

in the fast interception process, if the current T is intercepted _i ^sl Time-frequency resource R in time _k,y If the measured value of RSSI of the resource block RB is larger than a preset threshold value, determining that the RB is unavailable for transmitting the data to be transmitted, and collecting S from the time-frequency resource set _A ＝{R _0,y ,R _1,y ,…,R _k,y ,…,R _K,y Deleting the RB in the process, 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 the new time-frequency resource for quick interception until all RBs corresponding to the time-frequency resource set are traversed;

and selecting the target time-frequency resource according to the fast interception result.

Optionally, the short interception time slot { T } ₀ ^sl ,T ₁ ^sl ,…,T _M-1 ^sl Fast interception in the } and selecting the target time-frequency resource, and may further include: if it detects the current T _i ^sl Time-frequency resource R in time _k,y If the measured value of the upper RSSI of the RB is smaller than or equal to the preset threshold value, the counter is subjected to one-up or one-down operation, and the next short interception time slot is continuously intercepted.

Optionally, the above resource allocation method may further include: when the counter is incremented from 0 to N _init -1 or from N _init -1 decrements to 0, ending the fast listening.

Alternatively, when the counter is incremented from 0 to N _init -1 or from N _init -1 decrementing to 0, ending the fast snoop may include: when the counter is incremented from 0 to N _init -1 or from N _init -1, decrementing to 0, transmitting reservation information indicating that said time-frequency resources are 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 service characteristics corresponding to data to be sent;

the second determining module is configured to determine, according to the service characteristic and the subcarrier spacing, the number of symbols for fast sensing and AGC and the number of short sensing time slots, where the number of symbols for fast sensing and AGC corresponding to different subcarrier spacing is different, and/or the number of short sensing time slots for fast sensing and AGC corresponding to different subcarrier spacing is different;

And the selection module is used for carrying out quick interception and AGC according to the number of the symbols used for the quick 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.

Based on the same inventive concept, since the principle of the resource allocation device to solve the problem corresponds to the solution in the method design of the first aspect, the implementation of the resource allocation device may refer to the implementation of the method, and the repetition is 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 service characteristics may include at least one of: delay, priority, reliability, etc.

If the service characteristic is low-delay, high-priority and high-reliability, the corresponding relation among the subcarrier spacing, the number of symbols for quick interception and AGC and the number of short interception time slots comprises at least one of the following:

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

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

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

Or if the service characteristic is moderate time delay, moderate priority and high reliability, the corresponding relation among the subcarrier interval, the number of symbols used for quick interception and AGC and the number of short interception time slots comprises at least one of the following:

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

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

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

Or if the service characteristic is low-delay, high-priority and high-reliability, the corresponding relation among the subcarrier interval, the number of symbols for fast interception and AGC and the number of short interception time slots comprises at least one of the following:

the subcarrier spacing 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 9us;

the subcarrier spacing 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 9us;

the subcarrier spacing 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 9us;

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

In a third aspect, an embodiment of the present application provides a resource allocation apparatus, including: 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 the first aspects.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium storing a computer program, the computer program comprising at least one piece of code executable by a processor to implement a method according to any one of the first aspects.

In a fifth aspect, embodiments of the present application provide a chip having a computer program stored thereon, which, when executed by a processor, performs the method according to any of the first aspects.

These and other aspects of the application will be apparent from and elucidated with reference to the embodiment(s) described hereinafter.

Drawings

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

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

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

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

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

fig. 6 is a specific illustration of short-sounding time slot allocation for fast sounding 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 when the subcarrier spacing is 30kHz provided in an embodiment of the present application;

fig. 8 is a specific illustration of short-sounding time slot allocation for fast sounding and AGC when the subcarrier spacing is 60kHz 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 provided in the embodiments of the present application is 15 kHz;

fig. 10 is another specific illustration of short listening slot allocation for fast listening and AGC when the subcarrier spacing provided in the embodiments of the present application is 30 kHz;

fig. 11 is another specific illustration of short listening slot allocation for fast listening and AGC when the subcarrier spacing provided in the embodiments of the present application is 60 kHz;

fig. 12 is a further specific illustration of short listening slot allocation for fast listening and AGC when the subcarrier spacing provided in the embodiments of the present application is 15 kHz;

fig. 13 is a further specific illustration of short listening slot allocation for fast listening and AGC when the subcarrier spacing provided in the embodiments of the present application is 30 kHz;

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

Fig. 15 is a schematic structural diagram of a resource allocation device 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 relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone.

The following explains some terms and application scenarios in the embodiments of the present application, so as to facilitate understanding:

the application of the device-to-device (D2D) technology can reduce the burden of the cellular network, reduce the battery power consumption of the user equipment, increase the data rate, and well satisfy the demands of the proximity services. D2D technology allows a plurality of D2D-enabled terminal devices to directly discover and directly communicate with or without a network infrastructure. In view of the characteristics and advantages of the D2D technology, a D2D technology-based application scenario of the internet of vehicles is proposed, but due to concerns about security, the requirement on time delay in such a scenario is very high.

V2X communication refers to communication of the vehicle with anything outside, including vehicle-to-vehicle communication (vehicle to vehicle, V2V), vehicle-to-pedestrian communication (vehicle to pedestrian, V2P), vehicle-to-infrastructure communication (vehicle to infrastructure, V2I), vehicle-to-network communication (vehicle to network, V2N), as shown in fig. 1.

V2X communication is a basic technology and a key technology applied to a scene with very high requirements on communication delay in the future, such as scenes of intelligent automobiles, automatic driving, intelligent transportation systems and the like, aiming at high-speed equipment represented by vehicles. The V2X communication may support communication scenarios with and without network coverage, and the resource allocation may be in 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 V2X communication technology, the vehicle user equipment (vehicle user equipment, V-UE) can send some information of itself, such as information of position, speed, intention (e.g. turning, doubling, reversing) and some non-periodic event-triggered information to surrounding V-UEs, and similarly, the V-UE can also receive information of surrounding V-UEs in real time. The 3GPP standards organization officially promulgates the first generation LTE V2X communications standard, LTE Release 14, in the early 2017.

LTE V2X communication solves the partially fundamental requirement in V2X communication, but for application scenarios such as fully intelligent driving and automatic driving in the future, LTE V2X communication in the present stage cannot be supported effectively yet. With the development of the 5G New Radio (NR) technology in the 3GPP standard organization, the 5G NR v2x will be further developed, for example, a lower transmission delay can be supported, a more reliable communication transmission, a higher throughput, and a better user experience can be achieved, so as to meet the requirements of a wider application scenario.

A network device, also called a radio access network (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. By way of example, the network device may be a base station in a 5G network, such as a transmission and reception point (transmission and reception point, TRP), controller, etc., without limitation herein.

A terminal device, which may also be referred to as a User Equipment (UE), a terminal, an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, a user equipment, or the like. The terminal equipment can be a wireless terminal or a wired terminal, and the wireless terminal can be equipment with a wireless receiving and transmitting function, can be deployed on land and comprises indoor or outdoor, handheld or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.). The terminal device may be an unmanned aerial vehicle, an internet of things (internet of things, ioT) device (e.g., sensor, electricity meter, water meter, etc.), a V2X device (e.g., car communication module or other embedded communication module), a Station (ST) in a wireless local area network (wireless local area networks, WLAN), a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital processing (personal digital assistant, PDA) device, a handheld device with wireless communication capabilities, a computing device, or other processing device connected to a wireless modem, a car device, a wearable device (which may also be 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 future evolved public land mobile network (public land mobile network, PLMN), a terminal in an NR communication system, etc., which is not limited herein.

Fig. 2 is a flow chart illustrating a resource allocation method according to an embodiment of the present application. The embodiment of the application provides a resource allocation method, which can be executed by a resource allocation device, and the resource allocation device can be realized by a software and/or hardware mode. The resource allocation means may be integrated in the terminal device or the resource allocation means may be a terminal device, for example. This embodiment is exemplified with the terminal device as the execution subject.

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

s201, the terminal equipment determines service characteristics corresponding to data to be transmitted.

When the terminal equipment has data to be transmitted to other terminal equipment, the data at the moment is the data to be transmitted. Wherein for the data to be transmitted, the corresponding service is known to the terminal device, so further for the corresponding service characteristics, the terminal device can also be determined.

The respective traffic characteristics may be the same or different for different traffic. For example, if the traffic characteristics of the traffic a are different from the traffic characteristics of the traffic B, the traffic characteristics of the data related to the traffic a are different from the traffic characteristics of the data related to the traffic B.

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

S202, the terminal equipment determines the number of symbols and the number of short interception time slots for fast interception and self-gain control (automatic gain control, AGC) according to the service characteristics and the subcarrier spacing.

Wherein the subcarrier spacing (SCS) may include, but is not limited to, 15kHz, 30kHz, 60kHz. The number of symbols for fast sensing and AGC corresponding to different subcarrier spacings is different and/or the number of short sensing slots for fast sensing and AGC corresponding to different subcarrier spacings is different. It can be appreciated that the number of symbols used for fast sensing and AGC may be different for different subcarrier spacings for the same traffic characteristic; or, for the same traffic characteristic, the number of short interception slots used for fast interception and AGC may be different for different subcarrier spacings; alternatively, the number of symbols for fast sounding and AGC may be different for different subcarrier spacing for the same traffic characteristic, while the number of short sounding slots for fast sounding and AGC may be different.

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

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

for example, if the symbols for fast sounding and AGC are limited only in the first OFDM symbol, the design is adapted to a sub-carrier spacing of 15kHz and strongly correlated with 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 the frame length of LTE, still 10 milliseconds (ms), the frame number (system frame number, SFN) ranges from 0 to 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

An example of an NR frame structure with a 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.

According to licensed band assisted access (license assisted access, LAA) in LTE, the minimum interception unit is 9us, i.e. the short interception slot length is 9us, and considering that the time overhead of AGC is 15kHz,30kHz and 60kHz subcarrier spacing 35us,35us and 18us, respectively, the number of short interception slots available for fast interception if fast interception and AGC are defined in the first symbol is as shown in table 2:

TABLE 2

As can be seen from table 2, for a larger subcarrier spacing, e.g., 60kHz, when fast sounding and AGC are performed with only one symbol, the number of short sounding slots available for fast sounding is 0. Therefore, a new fast sounding-based resource allocation scheme for NR frame structure needs to be designed, i.e. the number of symbols and the number of short sounding slots for fast sounding and AGC are determined according to the traffic characteristics and the subcarrier spacing mentioned in this step.

S203, the terminal equipment performs fast interception and AGC according to the number of symbols and the number of short interception time slots used for the fast interception and AGC, and selects target time-frequency resources.

In order to reduce the probability of resource selection collision caused by at least partially repeated resource selection with other terminal devices, the terminal device can determine whether a certain potential available resource is occupied by other terminal devices based on the history interception information, and whether the 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, so as to predict whether a corresponding available resource exists in a future resource selection time window, and randomly select an available resource for transmission of data to be sent.

Specifically, assuming that the data to be transmitted arrives at the time of the slot n, as shown in fig. 4, the terminal device checks the history listening information of m slots (from n-m to n-1) before the slot n, excluding the time window [ n+t ] ₁ ,n+T ₂ ]And randomly selecting an available resource from the rest resource set for transmitting the data to be transmitted. Here, time window [ n+T ] ₁ ,n+T ₂ ]Each available resource (or time-frequency resource) in the network is defined as R _k,y Wherein y represents a slot number and k represents a group of lengths L _subCH Is allocated to the channel group, and is allocated to the channel group. Illustratively T ₁ Less than or equal to 4, T ₂ Greater than or equal to 20, and T ₂ Less than or equal to 100。

Since the history listening information is common to all mode-4 terminal devices and the low latency of certain advanced application scenarios of 5G NR-V2X requires the configuration of a smaller T ₂ The window length, thereby causing different terminal devices to select the same resources, resulting in resource selection collisions. In order to solve the above collision problem, a further fast interception resource selection method based on a history interception result is proposed. The specific interception steps are as follows:

the terminal device is based on the m time slots preceding time slot n (i.e. [ n-m, n-1 ]]M is a positive integer) history snoop information over a time window [ n+T ] ₁ ,n+T ₂ ]In a time slot n+T _y Wherein the data to be transmitted arrives at the time slot n, m is a positive integer, T ₁ ≤T ₂ X represents the maximum delay value required for fast listening, e.g. x=3 ms, t ₁ ≤T _y ≤T ₂ Time slot n+T _y Set S of time-frequency resources existing on top _A ＝{R _0,y ,R _1,y ,…,R _k,y ,…,R _K,y Y represents a slot number, k represents a group of lengths L _subCH K is an integer, and K is more than or equal to 0 and less than or equal to K; at n+T _y Time of day, from a set S of time-frequency resources _A ＝{R _0,y ,R _1,y ,…,R _k,y ,…,R _K,y Selecting a time-frequency resource R _k,y For different subcarrier spacing and traffic characteristics determined via S202, determining a window length of fast sounding, a number of symbols L for fast sounding and AGC and a number of short sounding slots M for fast sounding, and a time for AGC, wherein the L symbols are divided into N short sounding slots { T ₀ ^sl ,T ₁ ^sl ,…,T _N-1 ^sl }，T _sl For the length of one short listening slot, T _OFDM For the length of L symbols, +.>Represents a rounding down, 0 < M < N, andm is a positive integer. Wherein the first M short listening slots are used for fast listening (fast sensing) and the remaining time is used for AGC, i.e. short listening slot { T } ₀ ^sl ,T ₁ ^sl ,…,T _M-1 ^sl For fast listening as shown in fig. 5. Alternatively, M may be standard predefined or configured by the network device. The symbols may be, for example, orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbols.

Terminal equipment slave [0, M]A value N is randomly selected _init For the initial value of the counter, the counter can be counted in a way of increasing from 0 to N _init -1, or from N _init -1 decrements to 0; then, in each short listening slot { T }, in turn ₀ ^sl ,T ₁ ^sl ,…,T _M-1 ^sl In time-frequency resource R _k,y A fast listening is started.

During the fast listening process, if the current T is detected _i ^sl Time-frequency resource R in time (0.ltoreq.i.ltoreq.M-1) _k,y Is greater than a preset threshold (which may be defined by a standard or configured by a network side device), then determining the time-frequency resource R _k,y Unavailable for transmitting the data to be transmitted, ending the fast interception; if it detects the current T _i ^sl Time-frequency resource R in time _k,y If the measured value of RSSI of the signal is smaller than or equal to the preset threshold value, the counter is added with one or subtracted with one, and the next short interception time slot is continuously intercepted. The step is cycled 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 fast interception result.

According to the method and the device, firstly, service characteristics corresponding to data to be sent are determined, the number of symbols and the number of short interception time slots for quick interception and AGC are determined according to the service characteristics and subcarrier intervals, wherein the number of symbols for quick interception and AGC corresponding to different subcarrier intervals is different, and/or the number of short interception time slots for quick interception and AGC corresponding to different subcarrier intervals is different, and further, quick interception and AGC are carried out according to the number of symbols for quick interception and AGC and the number of short interception time slots, and target time-frequency resources are selected and used for transmitting the data to be sent. Because the number of symbols and the number of short interception time slots used for fast interception 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 select resources, and the method is suitable for a flexible and configurable frame structure, so that the probability of resource selection collision caused by the selection of at least partially repeated resources between the terminal equipment can be reduced in a 5G communication system or a future communication system.

On the basis of the above-described embodiments, exemplarily, the correspondence relationship 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:

1. if the service characteristics are low latency, high priority, and high reliability, the corresponding relationship among the subcarrier spacing, the number of symbols for fast sensing and AGC, and the number of short sensing time slots may include at least one of:

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

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

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

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

TABLE 3 Table 3

A specific illustration of a subcarrier spacing of 15kHz 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, 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 spacing is 30kHz, the length of 1 slot is equal to the length of 14 symbols, 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 subcarrier spacing of 60kHz is shown in fig. 8. Referring to fig. 8, when the subcarrier spacing is 60kHz, the length of 1 slot is equal to the length of 14 symbols, 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 low-delay, high-priority and high-reliability services, a configuration of window length and AGC for fast interception adapted to the structural characteristics of NR frames is provided, which avoids the limitation caused by the design that the fast interception and AGC are limited only in the first symbol (as shown in table 2): the fast sensing and AGC is limited to the first symbol only, the design is only suitable for the subcarrier interval of 15kHz, and the NR frame structure has a plurality of subcarrier intervals, so that the fast sensing window length and AGC configuration for the unused subcarrier interval needs to be designed, so that the probability of resource selection collision caused by the selection of at least partially repeated resources between terminal devices can be reduced in a 5G communication system or a future communication system.

2. If the service characteristic is medium delay, medium priority and high reliability, the corresponding relationship among the subcarrier spacing, the number of symbols for fast interception and AGC and the number of short interception time slots may include at least one of the following:

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

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

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

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

TABLE 4 Table 4

A specific illustration of a subcarrier spacing of 15kHz 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, 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, the first 4 symbols are used for fast sensing and AGC, 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 subcarrier spacing of 60kHz 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, the first 7 symbols are used for fast sensing and AGC, 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.

To sum up, for the service with medium delay, medium priority and high reliability, a configuration of window length and AGC for fast interception adapted to the structural characteristics of NR frames is provided, which avoids the limitation caused by the design that the fast interception and AGC are limited only in the first symbol (as shown in table 2): the fast sensing and AGC is limited to the first symbol only, the design is only suitable for the subcarrier interval of 15kHz, and the NR frame structure has a plurality of subcarrier intervals, so that the fast sensing window length and AGC configuration for the unused subcarrier interval needs to be designed, so that the probability of resource selection collision caused by the selection of at least partially repeated resources between terminal devices can be reduced in a 5G communication system or a future communication system.

3. If the service characteristics are low latency, high priority, and high reliability, the corresponding relationship among the subcarrier spacing, the number of symbols for fast sensing and AGC, and the number of short sensing time slots may include at least one of:

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

2) The subcarrier spacing is 30kHz, the number of symbols for fast interception is 2, the number of short interception slots for fast interception is 8, and the length of the short interception slots is 9us. The symbol duration corresponding to the subcarrier spacing of 30kHz is 35.9us.

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

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

TABLE 5

A specific illustration of a subcarrier spacing of 15kHz 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, the 1 st symbol is used for fast sensing, 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 3 rd symbol is used for AGC.

A specific illustration of a subcarrier spacing of 60kHz 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 low-delay, high-priority and high-reliability services, a configuration of window length and AGC for fast interception adapted to the structural characteristics of NR frames is provided, where AGC is fixedly used as one symbol, so that limitations caused by such a design that fast interception and AGC are limited only in the first symbol (as shown in table 2) are avoided: the fast sensing and AGC is limited to the first symbol only, the design is only suitable for the subcarrier interval of 15kHz, and the NR frame structure has a plurality of subcarrier intervals, so that the fast sensing window length and AGC configuration for the unused subcarrier interval needs to be designed, so that the probability of resource selection collision caused by the selection of at least partially repeated resources between terminal devices can be reduced in a 5G communication system or a future communication system.

Furthermore, during the fast listening process described above, once a certain current T exists _i ^sl Time-frequency resource R in time _k,y And if the RSSI measured value is larger than a preset threshold value, stopping the quick interception. 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 listening technology, the counter is used for staggering access time of different terminal devices so as to reduce resource selection collision. If only the current T is detected _i ^sl Time-frequency resource R in time _k,y If the measured value of RSSI is greater than a preset threshold value, the fast interception is finished, which causes that the counter cannot exert its function to the maximum extent, and once the above condition is satisfied, the terminal device immediately loses the current access opportunity, resulting in the waste of the access opportunity.

In the fast interception process, the minimum unit of the fast interception is time-frequency resource. In the embodiment of the present application, the time-frequency resource refers to a resource with a fixed length in the frequency domain. The bandwidth of the time-frequency resource on the frequency domain is the bandwidth corresponding to the data to be sent. The data to be transmitted sent by each terminal device is different, and the corresponding bandwidths may also be different.

When all the terminal devices divide the time-frequency resources by adopting the same method, for example, each time-frequency resource is a sub-channel, the signal receiving strength based on the sub-channel can be used for judging whether to discard the time-frequency resource. However, in NR-V2X, service requirements 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 of the different terminal devices and the number of sub-channels for transmitting data to be transmitted may be different. Therefore, the signal receiving strength based on the time-frequency resource cannot accurately and effectively determine 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 of whether to end the fast listening and measuring the minimum granularity of the received signal strength.

Specifically, S203, the terminal device performs fast interception and AGC according to the number of symbols and the number of short interception timeslots used for fast interception and AGC, and selects a target time-frequency resource, which may include: short listening time slot { T ₀ ^sl ,T ₁ ^sl ,…,T _M-1 ^sl And performing fast interception in the process, performing AGC in the residual time of the L symbols, and selecting a target time-frequency resource.

Further, in short listening time slot { T ₀ ^sl ,T ₁ ^sl ,…,T _M-1 ^sl Fast listening within } selects a target time-frequency resource, which may include: from [0, M]A value N is randomly selected _init For the initial value of the counter, 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 { T } ₀ ^sl ,T ₁ ^sl ,…,T _M-1 ^sl In time-frequency resource R _k,y Starting fast interception; in the fast interception process, if the current T is intercepted _i ^sl Time-frequency resource R in time _k,y If the RSSI measurement value of the RB is larger than the preset threshold value, determining that the RB is unavailable for transmitting the data to be transmitted, and collecting the RSSI measurement value from the time-frequency resource set S _A ＝{R _0,y ,R _1,y ,…,R _k,y ,…,R _K,y Deleting the RB in the process, 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, reselecting the new time-frequency resource for quick interception until all RBs corresponding to the time-frequency resource set are traversed; and selecting a target time-frequency resource according to the fast interception result. Optionally, if the set of time-frequency resources is empty, the fast listening is ended.

Wherein, for the data to be transmitted by different terminal devices, the time-frequency resource R used for fast interception _k,y May correspond to one or more sub-channels, each sub-channel in turn corresponding to a plurality of RBs, thus being upAnd in the fast interception process, the RSSI measurement value and the preset threshold value are judged by taking an RB as a unit, the RSSI measurement value of one RB and the preset threshold value are judged each time, when the RSSI measurement value of the RB is larger than the preset threshold value, the RB is determined to be unavailable for transmitting data to be transmitted, and the RB is deleted from the time-frequency resource set.

Or, in the fast interception process, if the current T is intercepted _i ^sl Time-frequency resource R in time _k,y If the measured value of the upper RSSI of the RB is smaller than or equal to the preset threshold value, the counter is added with one or subtracted with one, and the next short interception time slot is continuously intercepted.

Optionally, the method may further include: during fast snoop, when the counter is incremented from 0 to N _init -1 or from N _init -1 decrements to 0, ending the fast listening. Further, when the counter is incremented from 0 to N _init -1 or from N _init -1, decrementing to 0, transmitting reservation information indicating that said time-frequency resources are occupied and ending the fast listening. Illustratively, the reservation information may be non-decodable information, such as all bits "0" or "1". Thus, other terminal devices receiving the reservation information can determine that the time-frequency resource is occupied, and the time-frequency resource is unavailable in the preset time.

It will be appreciated that in the above embodiments, the method or step implemented by the terminal device may also be implemented by a chip available to the terminal device.

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

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

A second determining module 52, configured to determine the number of symbols and the number of short interception time slots for fast interception and AGC according to the traffic characteristics and the subcarrier spacing. The number of symbols for fast sensing and AGC corresponding to different subcarrier spacings is different, and/or the number of short sensing time slots for fast sensing and AGC corresponding to different subcarrier spacings is different.

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

The above-mentioned resource allocation device of the present embodiment may be used to execute the technical solutions executed by the terminal device in the corresponding method embodiments, and its implementation principle and technical effects are similar, where the functions of each module may refer to corresponding descriptions in the method embodiments, and are not repeated herein.

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

In a first implementation manner, if the service characteristic is low latency, high priority, and high reliability, the corresponding relationship among the subcarrier spacing, the number of symbols for fast sensing and AGC, and the number of short sensing time slots includes at least one of:

In a second implementation manner, if the service characteristic is moderate delay, moderate priority, and high reliability, the corresponding relationship among the subcarrier spacing, the number of symbols used for fast interception and AGC, and the number of short interception time slots includes at least one of the following:

In a third implementation manner, if the service characteristic is low latency, high priority, and high reliability, the corresponding relationship among the subcarrier spacing, the number of symbols for fast sensing and AGC, and the number of short sensing time slots includes at least one of:

In some embodiments, the second determination module 52 may be specifically configured to: based on the history interception information of m time slots before the time slot n, in the time window [ n+T ] ₁ ,n+T ₂ ]In a time slot n+T _y Wherein the data to be transmitted arrives at the time of the time slot n, m is a positive integer, T ₁ ≤T ₂ X is less than or equal to X, X represents the maximum time delay value required to be rapidly intercepted, T ₁ ≤T _y ≤T ₂ Time slot n+T _y Set S of time-frequency resources existing on top _A ＝{R _0,y ,R _1,y ,…,R _k,y ,…,R _K,y Y represents a slot number, x represents a group of lengths L _subCH Is a set of consecutive subchannels of (a); at n+T _y Time of day, from a set S of time-frequency resources _A ＝{R _0,y ,R _1,y ,…,R _k,y ,…,R _K,y Selecting a time-frequency resource R _k,y For different subcarrier intervals and service characteristics, determining a 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, wherein K is an integer, K 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 ] ₀ ^sl ,T ₁ ^sl ,…,T _N-1 ^sl }，T _sl Is a sSS length, T _OFDM For the length of L symbols, +.>Represents a downward rounding, 0 < M < N, and M is a positive integer.

Alternatively, the selection module 53 may be configured to: short listening time slot { T ₀ ^sl ,T ₁ ^sl ,…,T _M-1 ^sl And performing fast interception in the process, 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 fast interception process, if the current T is intercepted _i ^sl Time-frequency resource R in time _k,y If the measured value of the Received Signal Strength Indication (RSSI) of the Resource Block (RB) is larger than a preset threshold value, determining that the RB is unavailable for transmitting the data to be transmitted, and acquiring the set S of time-frequency resources _A ＝{R _0,y ,R _1,y ,…,R _k,y ,…,R _K,y Deleting the RB in the process, 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 also be configured to: at the time of sensing the current T _i ^sl Time-frequency resource R in time _k,y When the measured value of the upper RSSI of the RB is smaller than or equal to the preset threshold value, the counter is subjected to one-up or one-down operation, and the next short interception time slot is continuously intercepted.

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 _init -1 decrements to 0, ending the fast listening.

Optionally, the resource allocation apparatus may further include: a transmitting 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, transmitting reservation information indicating that said time-frequency resources are occupied and ending the fast listening.

The above-mentioned resource allocation device of the present embodiment may be used to execute the technical solutions executed by the terminal device in the above-mentioned method embodiments, and its implementation principle and technical effects are similar, where the functions of each module may refer to corresponding descriptions in the method embodiments, and are not repeated herein.

In some embodiments, the first determining module 51, the second determining module 52 and the selecting module 53 may be embedded in the processor in a hardware form. Alternatively, in a hardware implementation, the above-mentioned transmitting module may be a transmitter or a transceiver.

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

The computer program may be embodied 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. With 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 for causing a computer device, specifically, a processor, to perform all or part of the steps of the terminal device in the embodiments of the present application. And the aforementioned computer-readable storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation. The functional modules 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 may be integrated into one module. The integrated modules may be implemented in hardware or in software functional modules.

The integrated modules, if implemented in the form of software functional modules 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 embodied in essence or a part contributing to the prior art or all or part of the technical solution, in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more 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)), etc.

Claims

1. A method for resource allocation, comprising:

determining service characteristics corresponding to data to be transmitted;

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

according to the number of symbols used for fast interception and AGC and the number of short interception time slots, fast interception and AGC are carried out, and a target time-frequency resource is selected, wherein the target time-frequency resource is used for transmitting the data to be transmitted;

the determining the number of symbols and the number of short interception time slots for fast interception and AGC according to the service characteristics and the subcarrier spacing comprises:

based on the history interception information of m time slots before the time slot n, in the time window [ n+T ] ₁ ,n+T ₂ ]In a time slot n+T _y Wherein the data to be transmitted arrives at the time of the time slot n, m is a positive integer, T ₁ ≤T ₂ X is less than or equal to X, X represents the maximum time delay value required to be rapidly intercepted, T ₁ ≤T _y ≤T ₂ Time slot +T _y Set S of time-frequency resources existing on top _A ＝{R _0,y ,R _1,y ,…,R _k,y ,…,R _K,y Y represents a slot number, k represents a group of lengths L _subCH K is an integer, and K is more than or equal to 0 and less than or equal to K;

at n+T _y Time of day, from a set S of time-frequency resources _A ＝{R _0,y ,R _1,y ,…,R _k,y ,…,R _K,y Selecting a time-frequency resource R _k,y For different subcarrier spacing and traffic characteristics, determining a window length of fast interception, a number L of symbols for fast interception and AGC and a number M of short interception time slots for fast interception, and a time for AGC, L symbols are divided into N short interception time slots { T } ₀ ^sl ,T ₁ ^sl ,…,T _N-1 ^sl }，T _sl For the length of one short listening slot, T _OFDM For the length of L symbols, +.>Represents a downward rounding, 0 < M < N, and M is a positive integer.

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, high reliability, the correspondence of subcarrier spacing, number of symbols for fast sounding and AGC, and number of short sounding slots comprises at least one of:

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

the subcarrier spacing is 60kHz, the number of symbols for fast sounding and AGC is 3, wherein the number of short sounding slots for fast sounding is 4, the length of short sounding slots 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, high reliability, the correspondence of subcarrier spacing, number of symbols for fast sounding and AGC, and number of short sounding slots comprises at least one of:

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

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

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

among the three different correspondences, the number of symbols for AGC is 1.

6. The method of claim 1, wherein the selecting the target time-frequency resource according to the number of symbols and the number of short listening slots for fast listening and AGC comprises:

short listening time slot { T ₀ ^sl ,T ₁ ^sl ,…,T _M-1 ^sl And performing fast interception in the process, performing AGC in the residual time of the L symbols, and selecting the target time-frequency resource.

7. The method of claim 6, wherein the time slot { T during short listening ₀ ^sl ,T ₁ ^sl ,…,T _M-1 ^sl Intra-process (S)Fast interception, selecting the target time-frequency resource, including:

8. The method of claim 7, wherein the time slot { T during short listening ₀ ^sl ,T ₁ ^sl ,…,T _M-1 ^sl Performing fast interception in the } and selecting the target time-frequency resource, and further comprising:

if it detects the current T _i ^sl Time-frequency resource R in time _k,y If the measured value of the upper RSSI of the RB is smaller than or equal to the preset threshold value, the counter is subjected to one-up or one-down operation, and the next short interception time slot is continuously intercepted.

9. The method according to claim 7 or 8, further comprising:

when the counter is incremented from 0 to N _init -1 or from N _init -1 decreaseAnd when 0, finishing the quick interception.

10. The method of claim 9, wherein the step of incrementing the counter from 0 to N _init -1 or from N _init -1 decrementing to 0, ending the fast snoop, comprising:

when the counter is incremented from 0 to N _init -1 or from N _init -1, decrementing to 0, transmitting reservation information indicating that the time-frequency resources are occupied and ending the fast listening.

11. A resource allocation apparatus, comprising:

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

The selection module is used for carrying out quick interception and AGC according to the number of the symbols used for the quick 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;

the second determining module is specifically configured to:

12. The apparatus of claim 11, wherein the traffic characteristics comprise at least one of:

time delay, priority, reliability.

13. The apparatus of claim 12, wherein if the traffic characteristics are low latency, high priority, high reliability, the correspondence of subcarrier spacing, number of symbols for fast sounding and AGC, and number of short sounding slots comprises at least one of:

14. The apparatus of claim 12, wherein if the traffic characteristics are medium delay, medium priority, high reliability, the correspondence of subcarrier spacing, number of symbols for fast sounding and AGC, and number of short sounding slots comprises at least one of:

15. The apparatus of claim 12, wherein if the traffic characteristics are low latency, high priority, high reliability, the correspondence of subcarrier spacing, number of symbols for fast sounding and AGC, and number of short sounding slots comprises at least one of:

among the three different correspondences, the number of symbols for AGC is 1.

16. The apparatus of claim 11, wherein the selection module is configured to:

17. The apparatus of claim 16, wherein the selection module is specifically configured to:

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

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

when the counter is incremented from 0 to N _init -1 or from N _init -1 decrements to 0, ending the fast listening.

20. The apparatus as recited in claim 19, further comprising:

a transmitting module for increasing the counter from 0 to N _init -1 or from N _init -1, decrementing to 0, transmitting reservation information indicating that the time-frequency resources are occupied and ending the fast listening.

21. 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 1-10.

22. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program comprising at least one piece of code executable by a processor for implementing the method according to any of claims 1-10.