WO2020088223A1

WO2020088223A1 - Resource selecting method and device

Info

Publication number: WO2020088223A1
Application number: PCT/CN2019/110865
Authority: WO
Inventors: 李晨鑫; 赵锐; 郑方政; 王映民
Original assignee: 电信科学技术研究院有限公司
Priority date: 2018-11-01
Filing date: 2019-10-12
Publication date: 2020-05-07
Also published as: CN111132313B; CN111132313A

Abstract

Embodiments of the present application relate to a method and a resource selecting method and device, for solving the problem that there is no resource selecting method applicable to acyclic services in the prior art. In the embodiments of the present application, upon determining that a service packet to be sent is received, a terminal device detects current candidate resources, determines resource occupation information within a period of time currently or in future on the basis of the detection result, determines available candidate resources from said candidate resources according to the resource occupation information within a period of time currently and/or in future, and selects a transmission resource from the available candidate resources. Because the terminal device can obtain the resource occupation information according to detection, and can therefore further select the transmission resource for an aperiodic service.

Description

Method and equipment for resource selection

Cross-reference of related applications

This application requires the priority of a Chinese patent application filed on November 01, 2018 in the China Patent Office with the application number 201811296547.5 and the invention titled "A Method and Equipment for Resource Selection", the entire contents of which are incorporated herein by reference Applying.

Technical field

The present invention relates to the field of wireless communication technology, and in particular, to a method and device for resource selection.

Background technique

The 3rd Generation Partnership Project (3GPP) Release 14 and Release 15 define the Long Term Evolution (LTE) -vehicle wireless communication technology (vehicle to X, V2X) protocol, including two communication methods, These are the direct link communication method between terminals and the uplink / downlink communication method between terminals and base stations. Among them, the direct link communication mode between the terminals includes two transmission modes, which are a direct link transmission mode 3 and a direct link transmission mode 4, respectively. The direct link transmission mode 3 is for the base station to allocate resources for terminal scheduling, and the direct link transmission mode 4 is for the user equipment (UE) to independently select resources.

The LTE-V2X protocol of 3GPP Release 14 is the technical specification of the first stage of V2X, which can meet the basic needs and support the basic road safety services of 3GPP TR 22.885. 3GPP Release 15's LTE-V2X protocol is the technical specification of the second stage of V2X, introducing mechanisms such as carrier aggregation, high-order modulation, and delay reduction. The relevant enhanced functions can support some eV2X application use cases in 3GPP TR 22.886. The use cases that 3GPP Release 14 and Release 15 and Release 15 and LTE-V2X cannot support in 3GPP TR22.886 are studied and supported in the third stage of 3GPP V2X.

The 3GPP RAN # 80 meeting passed the establishment of the 3rd stage NR V2X research project (Study Item, SI) of 3GPP V2X. The research direction is NR V2X resource allocation mechanism research. The targeted business includes periodic and non-periodic services.

However, 3GPP Release 14 and Release 15 are mainly aimed at periodic services, and the UE autonomous resource selection mechanism of sensing + semi-persistent scheduling (sensing + SPS) is specified for the direct link transmission mode 4. However, aperiodic services will be one of the NR V2X's regular services. Since the arrival of aperiodic services is not at equal time intervals, the historical SA decoding information and energy detection information considering periodic factors in sensing + SPS are not applicable to non-periodic services Cycle business. The problem that the non-periodic service arrival time interval is random and the sensing + SPS mechanism cannot be used to ensure system performance needs to be solved urgently.

This shows that how to select and use resources for acyclic services in the existing 3GPP resource selection mechanism is a problem that needs to be solved at present.

Summary of the invention

Embodiments of the present application provide a method and device for resource selection, to solve the problem of how to select and use resources for aperiodic services in the existing 3GPP resource selection mechanism.

According to a first aspect of the embodiments of the present application, a method for resource selection is provided, including:

When it is determined that the service package to be sent arrives, the current candidate resources are detected;

Determine the current and / or future resource occupancy information based on the detection results;

Determine available candidate resources from the candidate resources according to the current and / or future resource occupancy information;

Select a sending resource from the available candidate resources, and use the sending resource to send the service packet to be sent.

According to a second aspect of the embodiments of the present application, there is provided a terminal device for resource selection, including: a processor and a memory.

Among them, the processor is used to read the program in the memory and perform the following process:

According to a third aspect of the embodiments of the present application, there is provided a computer storage medium on which a computer program is stored, and when the program is executed by a processor, the selection method described in the first aspect above is implemented.

In the embodiment of the present application, the terminal device can obtain resource occupancy information according to the detection, so that resource selection and use for aperiodic services can be realized, so that the terminal device can normally perform resource selection function for services, and further improve system performance.

BRIEF DESCRIPTION

In order to more clearly explain the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without paying any creative work, other drawings can be obtained based on these drawings.

FIG. 1A is a schematic flowchart of a method for resource selection according to Embodiment 1 of the present application;

1B is a schematic diagram of determining transmission resource combination occupancy information according to an association relationship between a resource combination occupied by a preamble sequence and a transmission resource combination provided by Embodiment 1 of the present application;

1C is a schematic diagram of determining a priority of a transmission service occupying a current channel or a set of sub-channels provided by Embodiment 1 of the present application;

FIG. 1D is a schematic diagram of a specific method for determining that a corresponding reservation continues to occupy resources or an associated transmission resource combination is an unavailable candidate resource provided by Embodiment 1 of the present application; FIG.

1E is a schematic diagram of determining that an occupied resource / resource combination and the above-mentioned transmission resource combination overlap in a period of time in the future provided by Embodiment 1 of the present application;

2 is a schematic diagram of a terminal device for resource indication provided in Embodiment 2 of the present application;

FIG. 3 is a schematic diagram of an apparatus for performing resource indication according to Embodiment 3 of the present application.

detailed description

Hereinafter, some terms in the embodiments of the present application will be explained to facilitate understanding by those skilled in the art.

(1) In the embodiments of the present application, the terms "network" and "system" are often used interchangeably, but those skilled in the art can understand the meaning.

(2) In the embodiments of the present application, the term "plurality" refers to two or more, and other quantifiers are similar.

(3) "and / or", describing the relationship of related objects, indicating that there can be three types of relationships, for example, A and / or B, which can indicate: there are A alone, A and B, and B alone Happening. The character "/" generally indicates that the related object is a "or" relationship.

Example one:

This embodiment provides a method for instructing resource selection. The main process includes: when the service to be sent reaches the terminal UE, the UE detects the current candidate resources, and obtains resource occupancy information within a certain period of the current / future according to the detection result , Based on the current and / or future resource occupancy information, determine available candidate resources from the candidate resources, and select transmission resources from the available candidate resources, and then use the transmission resources to send the service to be sent package.

The above resource occupation information in the embodiment of the present application is resources occupied by other sending terminals except the terminal where the service package to be sent is located.

The schematic flowchart of the method provided in the embodiment of the present application, as shown in FIG. 1A, specifically includes:

In step 110, when it is determined that the service packet to be sent arrives, the current candidate resource is detected.

Optionally, in implementation, the candidate resources include: all frequency domain resources of the resource pool / part of bandwidth (BWP) currently used by the terminal UE.

Optionally, the service corresponding to the service package to be sent may be a periodic service or an aperiodic service. The time interval for the periodic service to reach the terminal is fixed, and the aperiodic service may reach the foregoing The time interval of the terminal is random.

Optionally, the current candidate resources are detected according to at least one resource granularity. The at least one resource granularity includes: the current channel, the sub-channel set desired by the terminal to be selected, and the transmission resource combination desired by the terminal to be selected.

Step 120: Determine resource occupancy information in the current and / or future period of time according to the detection result.

The above resource occupancy information refers to a situation where the channel and / or sub-channel set and / or resource combination where the candidate resource is located is occupied by other sending terminals than the terminal UE where the service packet to be sent is located.

Optionally, according to the detection result of step 110, and based on the above resource occupation information, it may be determined whether the channel and / or sub-channel set and / or resource combination where the candidate resource is located is occupied.

Step 130: Determine available resources from the candidate resources according to the above-mentioned current and / or future resource occupancy information.

Optionally, according to the current and / or future resource occupancy information of step 120, according to the first preset rule, exclude unavailable candidate resources from the candidate resources, and exclude the unavailable candidate resources The set of candidate resources is determined as the first set of candidate sending resources.

There are two types of candidate resources available, one is a candidate resource that is not occupied, and the other is a candidate resource that is occupied, but when the unavailable candidate resources are excluded, the candidate resources are not excluded.

Optionally, unavailable candidate resources can be excluded from the above candidate resources in at least one of the following ways:

Exclude unavailable candidate resources according to the number of sending terminals occupying the current channel / subchannel set;

Exclude unavailable candidate resources according to the priority of the sending service of the sending terminal occupying the current channel / subchannel set;

According to the duration of occupying the current channel / sub-channel set, or the information of the resource combination expected to be occupied by the service packets to be sent of the remaining sending terminals, unavailable candidate resources are excluded.

Step 140: Determine a sending resource from the available resources, and use the sending resources to send the service packet to be sent.

Optionally, when it is determined that the first candidate transmission resource set obtained in step 130 satisfies the optional condition, a transmission resource is selected from the first candidate transmission resource set, or a waiting time is generated, and when it is determined that the waiting time reaches the waiting time, Select a transmission resource from the above-mentioned first candidate transmission resource set; or

When the first candidate transmission resource set does not satisfy the optional condition, a waiting time is generated, and when it is determined that the waiting time reaches the waiting time, the current candidate resource is detected again, and the transmission resource is selected according to the result of the re-detection.

The foregoing optional condition refers to that the number of available time resources in which the number of available candidate resources exists is greater than or equal to the number of times the service package to be sent should be sent.

Optionally, in the above step 110, the current candidate resource may be detected in at least one of the following ways:

1) Decode control signaling of the channel / sub-channel set where the detected candidate resource is located;

2) Detect the preamble sequence of the channel / subchannel set where the detected candidate resource is located;

3) Perform channel energy detection on the channel / sub-channel set where the candidate resource is located.

In the above step 120, according to the detection result, the resource occupancy information in the current / future period may be determined in at least one of the following ways:

1) Determine the above resource occupation information according to the control signaling detected by decoding, including:

Determine, according to the instruction information obtained by decoding the detected control signaling, the occupancy information of the channel and / or sub-channel set and / or the transmission resource combination indicated by the control signaling; or

Determine the channel and / or sub-channel set where the candidate resource is located and / or based on the resource location where the control signaling is located, and the correspondence between the resource location and the channel and / or sub-channel and / or transmission resource combination where the candidate resource is located Send resource combination occupation information.

2) Determine the above resource occupancy information according to the detected preamble sequence, including:

Determine the channel and / or sub-channel set and / or transmission resource combination where the candidate resource is located according to the association between the resource position where the detected preamble sequence is located and the channel and / or sub-channel set and / or transmission resource combination where the candidate resource is located Occupancy information; or

Determine the candidate according to the detected resource position where the same preamble sequence on the same time-domain resource is located, and the association relationship between the resource position where the preamble sequence is located and the channel and / or sub-channel set and / or transmission resource combination where the candidate resource is located The channel and / or sub-channel set where the resource is located and / or the resource combination occupancy information sent; or

According to the association relationship between the detected resource combination occupied by the preamble sequence and the transmission resource combination, the transmission resource combination occupation information is determined.

3) Determine the above resource occupation information according to the energy detection result, including:

When it is determined that the result of channel energy detection reaches or exceeds a preset energy threshold, it is determined that the channel and / or sub-channel set where the corresponding candidate resource is located is occupied.

The following provides a specific example of determining the transmission resource combination occupancy information according to the association relationship between the detected resource combination occupied by the preamble sequence and the transmission resource combination in the above manner 3, as shown in FIG. 1B, which specifically includes:

The preset condition is that half of orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols are used when sending the above preamble sequence.

As shown in FIG. 1B, the first 4 OFDM symbols are symbols that allow the transmission of the preamble sequence.

The symbols # 1, # 3, and # 4 are detected on the current subframe as the preamble sequence sent by some other transmitting terminal UE1, and the data generation resource occupied by the foregoing transmitting terminal is combined into the preamble sequence transmission slot (slot) After that, it is occupied in the manner of 0x10110000000000.

Wherein, the candidate resources are detected according to the resource granularity. In the embodiment of the present application, the resource granularity is the time-domain granularity of the candidate resource. Here, the method provided by the embodiment of the present application is illustrated by time slots. The technician can also select other time-domain resource granularity instead of the time-domain resource granularity slot described in the embodiments of the present application; optionally, when the above-mentioned manner 3 is adopted in implementation, the quality service (Quality) of Service (QoS) indicator determines the above-mentioned preset energy threshold according to the first preset rule.

The QoS indicators of the service packets to be sent include at least one of the following indicators: priority, delay indicator, reliability requirements, coverage distance, and data transmission rate.

The first preset rule includes at least one of the following corresponding rules:

1) The higher the priority of the service packet to be sent, the greater the above-mentioned preset energy threshold;

2) The higher the reliability requirement of the service package to be sent, the smaller the above-mentioned preset energy threshold;

3) The smaller the delay index of the service packet to be sent, the larger the above-mentioned preset energy threshold;

4) The higher the coverage distance requirement of the service package to be sent, or the larger the maximum transmission power value corresponding to the coverage distance requirement of the service package to be sent, the smaller the above-mentioned preset energy threshold;

5) According to the mapping relationship between the transmission rate requirement of the service to be sent and the foregoing preset energy threshold.

In the fifth corresponding rule of the first preset rule, the mapping relationship between the transmission rate requirement of the service to be sent and the preset energy threshold may be: the greater the transmission rate requirement, the greater the preset energy threshold; Alternatively, the greater the transmission rate requirement, the smaller the above-mentioned preset energy threshold; those skilled in the art can set it according to actual needs.

Optionally, in the above step 130, according to the current and / or future resource occupancy information and according to the first preset rule, unavailable candidate resources are excluded from the above candidate resources, which may be but not limited to include At least one of the following ways to exclude resources:

Resource exclusion method 1: When it is determined that the number of sending terminals currently occupying the candidate resource is greater than and / or equal to the preset terminal number threshold, the candidate resource is determined to be an unavailable candidate resource, and the unavailable candidate resource is excluded.

Resource exclusion method 2: When it is determined that the service priority currently occupying the candidate resource is higher than the priority of the service packet to be sent, the candidate resource is determined to be an unavailable candidate resource, and the unavailable candidate resource is excluded.

Resource exclusion method 3: When it is determined that the selected and / or preselected transmission resource combination in the future period overlaps with the candidate resource combination occupied by the service currently occupying the resource, the candidate resource combination is determined to be an unavailable candidate resource combination To exclude the above unavailable candidate resources.

Resource exclusion method 4: According to the detection result, determine the duration of the reservation that occupies the current channel and / or sub-channel set, or the resource combination expected to be occupied by the service packets to be sent by the remaining sending terminals, and then determine whether the above candidate resources are unavailable Candidate resources. When it is determined that the current resource is an unavailable candidate resource, it is determined that the corresponding reservation continuous occupied resource or the associated transmission resource combination are unavailable candidate resources, and then the unavailable candidate resources are excluded.

Optionally, in the above resource exclusion method 1, the number of sending terminals occupying the current channel / sub-channel set may be determined by the characteristics of preamble sequences sent by different sending terminals:

The characteristics of the preamble sequence may include, but are not limited to, at least one of the following characteristics: length of the preamble sequence, sequence content of the preamble sequence, and orthogonal coding index of the preamble sequence.

The above-mentioned basis for resource removal using the sequence content of the preamble sequence is: the preamble sequence generated by the same sequence length, but generated by different cyclic shifts and / or different root sequences.

The above-mentioned basis for using the orthogonal coding index of the preamble sequence to exclude resources is that the terminal uses different orthogonal codes to encode the preamble sequence when sending the preamble sequence.

Optionally, in the above resource exclusion method 1, according to at least one of the following QoS indicators of the service packet to be sent, the above-mentioned preset threshold number of terminals is determined according to a second preset rule.

The following QoS indicators of the service package to be sent include: priority, delay indicator, reliability requirements, coverage distance requirements, and data transmission rate requirements.

The above second preset rule may include, but is not limited to, at least one of the following corresponding rules:

1) The higher the priority of the service package to be sent, the smaller the threshold value of the above-mentioned preset number of terminals;

2) The higher the reliability requirement of the service package to be sent, the greater the threshold value of the above-mentioned preset number of terminals;

3) The smaller the delay index of the service package to be sent, the smaller the threshold value of the above-mentioned preset number of terminals;

4) The higher the coverage distance requirement of the service package to be sent, or the larger the maximum transmission power value corresponding to the coverage distance requirement of the service package to be sent, the greater the threshold value of the preset number of terminals;

5) According to the mapping relationship between the transmission rate requirement of the service to be sent and the preset threshold value of the number of terminals.

In the fifth corresponding rule of the second preset rule, the mapping relationship between the transmission rate requirement of the service to be sent and the preset threshold number of terminals may be: the greater the transmission rate requirement, the greater the preset threshold number of terminals Small; or, the greater the transmission rate requirement, the greater the threshold value of the preset number of terminals; those skilled in the art can set it according to actual needs.

Optionally, in the above resource exclusion method 2, the service priority currently occupying the candidate resource may be determined by at least one of the following priority determination methods, including:

Priority determination method 1: The instruction information obtained by decoding the detected control signaling is used to determine the priority of the transmission service occupying the current channel and / or sub-channel set;

Priority determination method 2: Determine the transmission service occupying the current channel and / or sub-channel set through the detected preamble sequences of different lengths and / or preamble sequences of different sequence contents and / or preamble sequences of different orthogonal coding indexes priority;

Priority determination method 3: By detecting the number of transmissions of the same preamble sequence on different time-domain resources, the priority of the transmission service occupying the current channel and / or sub-channel set is determined. The transmission of the above-mentioned preamble sequences on different time-domain resources The higher the number of times, the higher the priority of the transmission service occupying the current channel and / or subchannel set.

In the above priority determination method 2, preamble sequences of different lengths can be detected according to at least one of the following detection methods:

1) Detect the length of the above preamble sequence on each sub-channel;

2) Detect the above preamble sequence on each sub-channel, and determine the number and total length of the same preamble sequence detected;

3) Detect the length of the preamble sequence according to the current frequency pool resource size of the resource pool or BWP.

The following gives the specific method for determining the priority of the transmission service occupying the current channel / subchannel set by detecting the number of transmissions of the same preamble sequence on different time domain resources in the above priority determination method 2, as shown in FIG. 1C , Including:

The preset condition for judgment is that the above preamble sequence is transmitted using 2 OFDM symbols. The more times the above preamble sequence is transmitted, the higher the service priority of the corresponding service.

As can be seen from FIG. 1C, the preamble sequences of other transmitting terminals UE1 are transmitted on # 1 and # 2, # 3 and # 4, # 7 and # 8, and the number of transmissions is 3; the preamble sequences of other transmitting terminals UE2 are on # 1 and # 2, # 3 and # 4, # 7 and # 8, # 11 and # 12, the number of transmissions is 4.

Since the number of transmissions of the preamble sequence of UE2 is greater than that of UE1, the current service transmission priority of UE2 is higher than that of UE1.

Optionally, in the above resource exclusion method 3, the duration of occupying the current channel and / or sub-channel set or the resource combination expected to be occupied by the service packet to be sent by another sending terminal may be determined by at least one of the following estimated occupancy detection methods :

Predicted occupancy detection method 1: Decode the instruction information obtained by the detected control instruction to determine the duration of occupancy of the current channel and / or sub-channel set or the resource combination expected to be occupied by the service packets to be sent by the remaining transmitting terminals.

Predicted occupancy detection method 2: The resource location where the control signaling detected by decoding is used, as well as the physical layer direct link control channel (Physical Sidelink Control Channel, PSCCH) and the physical direct link shared channel (Physical Sidelink Shared Channel, The corresponding relationship of PSSCH) determines the duration of occupying the current channel and / or subchannel set or the resource combination expected to be occupied by the service packets to be sent by other sending terminals.

Predicted occupancy detection method 3: Determine the duration of occupancy of the current channel and / or sub-channel set or other transmitting terminal through the detected preamble sequence resource position and / or length and / or sequence content and / or orthogonal coding index The expected resource combination of the service package to be sent.

The following provides a specific method for determining that the resource corresponding to the reservation continuous occupancy resource or the associated transmission resource combination is an unavailable candidate resource in the above resource exclusion method 4, as shown in FIG. 1D.

At this time, the candidate time-frequency resource is slot1-slot12, and the frequency domain resource on each slot is divided into 2 sub-channels.

The terminal UE where the service package to be sent is located, according to the requirements of the service package to be sent, select and determine that there are two kinds of available candidate resource sets, that is, resources occupied by combination 1 and combination 2 in FIG. 1D, and other transmissions are detected. There are two kinds of resources occupied by the terminal, as shown in the resources occupied by UE1 and UE2 in the figure:

The subchannels on slot1, slot5, and slot9 in the resources of the combination 1 of the available candidate resources overlap with the resource combination used by UE2, and the subchannels on slot4, slot8, slot12 overlap with the resource combination used by UE1 .

The subchannels on slot2, slot6, and slot10 in the resource combination 2 of the available candidate resources overlap with the resource combination used by UE2, and the subchannels on slot4, slot8, slot12 overlap with the resource combination used by UE1 .

Optionally, in the above step 140, selecting a transmission resource from the available candidate resources includes:

When it is determined that the first candidate transmission resource set satisfies the optional condition, a transmission resource is selected from the first candidate transmission resource set, or a waiting time is generated, and when it is determined that the waiting time reaches the waiting time, the first candidate transmission resource set is selected Choose to send resources; or

The first candidate transmission resource set does not satisfy the optional condition, and a waiting time is generated. When it is determined that the waiting time reaches the waiting time, the candidate resource at that time is detected again, and the transmission resource is selected according to the result of the re-detection.

It needs to be clarified that the first set of candidate transmission resources is only for convenience of description, and does not limit the definition of the technical solution.

The foregoing optional condition is that the number of available time resources in which the number of available candidate resources exists is greater than or equal to the number of times that the service packet to be sent should be sent.

Optionally, the candidate resources at that time are detected again, and the transmission resources are selected according to the results of the detection again, including:

When it is determined that the second detection is performed again, the obtained first set of candidate transmission resources does not satisfy the optional condition, and the time for receiving the service package to be sent exceeds the delay index of the service package to be sent, the service package to be sent Discard; or

When it is determined that the first candidate transmission resource set does not meet the optional condition after the detection is performed again, it is determined that the current number of re-detections / total number of detections exceeds the preset threshold of detection times, and the service packets to be sent are discarded / random Perform resource selection / trigger candidate resource reselection; when it is determined that the current number of re-detections / total number of detections does not exceed the preset detection number threshold, a waiting time is generated and re-detection is performed.

In the above step 140, the waiting time is generated according to at least one of the following waiting time generation methods:

Waiting time generation method 1: Randomly generate the waiting time according to the preset waiting time interval; determine the waiting time interval corresponding to the delay indicator according to the delay indicator in the QoS indicator of the service package to be sent, and randomly generate within the waiting time interval waiting time;

Method for generating when waiting 2: According to the priority index in the QoS index of the service package to be sent, the waiting time interval corresponding to the priority index is determined, and the waiting time is randomly generated within the waiting time interval;

Generation method 3: when waiting: According to the reliability requirements in the QoS index of the service package to be sent, the waiting time interval corresponding to the reliability requirements is determined, and the waiting time is randomly generated within the waiting time interval;

Generation method 4 when waiting: According to the coverage distance requirement in the QoS index of the service package to be sent, the waiting time interval corresponding to the coverage distance requirement is determined, and the waiting time is randomly generated within the waiting time interval;

Generation method 5 when waiting: According to the data transmission rate requirement in the QoS index of the service packet to be sent, the waiting time interval corresponding to the data transmission rate requirement is determined, and the waiting time is randomly generated within the waiting time interval.

Optionally, in the above step 140, selecting a transmission resource from the first candidate transmission resource set includes:

When it is determined that the number of available candidate resources is equal to the number of times that the service packet to be sent should be sent, the available candidate resource is determined as the sending resource;

When it is determined that the number of available candidate resources is greater than the number of times that the service packet to be sent should be sent, randomly select a transmission resource from the plurality of available candidate resources, or, among the available candidate resources with the lowest preset channel energy detection result, Randomly choose to send resources.

The above preset ratio is not limited too much, and those skilled in the art can set it according to actual needs.

Optionally, in the above step 140, and using the sending resource to send the service packet to be sent includes sending the service packet to be sent and control signaling, and / or a preamble sequence on the sending resource.

The above control signaling may be used to indicate at least one of the following information: the priority of the service packet to be sent, the location of occupied transmission resources, and the location of the combination of occupied transmission resources.

The information indicated by the control signaling may be, but not limited to, the information described above, that is, the control signaling may also indicate other information in the prior art in the art.

Optionally, at least one of the following characteristics of the preamble sequence is determined by at least one of the priority, delay index, reliability requirement, coverage distance requirement, and data transmission rate requirement of the QoS index of the service packet to be sent. Index of position, sequence length, sequence content, orthogonal coding.

Optionally, in the above step 140, the preamble sequence may be sent according to at least one of the following preamble transmission modes:

Preamble sequence sending method 1: send the preamble sequence of the service packet to be sent on the starting subchannel of the service packet to be sent;

Preamble sequence sending method 2: repeatedly sending the preamble sequence of the service packet to be sent on multiple sub-channels of the service packet to be sent;

Preamble sequence sending method 3: The preamble sequence of the service packet to be sent is sent on all frequency domain resources of the currently used resource pool or BWP.

Optionally, the length of the preamble sequence may be determined according to at least one of the following ways:

1) Determine the length corresponding to the preamble sequence according to the size of the set of sub-channels occupied by the service packets to be sent;

2) According to the mapping relationship between at least one of the priority, delay index, reliability requirement, coverage distance requirement, and data transmission rate requirement of the QoS index of the service packet to be sent, determine the corresponding preamble sequence length;

3) From the network side configuration or pre-configured preamble sequence length options, randomly select a length of preamble sequence.

As an optional method, in step 140, sending the service packet to be sent by using the sending resource further includes the following situations:

1) Detect some / all subsequent resources outside the above transmission resource combination to determine that the occupied resource / resource combination conflicts with the above transmission resource combination, and perform reselection of the transmission resource combination; or

2) Detection is performed on some / all subsequent resources outside the above-mentioned transmission resource combination to determine that the occupied resource / resource combination conflicts with the above-mentioned transmission resource combination, and the channel energy detection result exceeds the preset energy threshold, and the transmission resource is carried out Re-election of combinations; or

3) After using the sending resources to send the service package to be sent, if the feedback cannot be received when the preset time period is exceeded, the sending resource combination is reselected.

The conflict between the occupied resource / resource combination and the transmission resource combination includes at least one of the following conflicts:

Conflict 1: The occupied resource / resource combination and the above-mentioned transmission resource combination, when there is overlap in a period of time in the future, determine that the occupied resource / resource combination and the above-mentioned transmission resource combination conflict.

Conflict 2: When the occupied resource / resource combination and the above-mentioned transmission resource combination overlap for a period of time in the future, and it is determined that the service priority of the occupied resource / resource combination is higher than the service priority of the service packet to be sent To determine that the occupied resource / resource combination conflicts with the above transmission resource combination.

The following gives a specific judgment method when the occupied resource / resource combination and the above-mentioned transmission resource combination overlap in a period of time in the future, as shown in FIG. 1E, including:

As shown in FIG. 1E, the available time-frequency resources are slot1-slot12, and the frequency-domain resources on each slot are divided into 2 sub-channels. The terminal UE0 where the service packet to be sent above has selected the sending resources, namely slot3, 11, but UE0 is not currently sending resources.

It can be seen from FIG. 1E that UE1 uses the resource combination overlapping in

slots

3, 7, and 11, and the transmission resource combination selected by UE0, that is, the resource / resource combination occupied by UE1 and the transmission resource combination selected by UE0 are considered to be in the future. There is overlap.

In a specific implementation process, it may also be determined whether the resources occupied by the two overlap in a future period according to the transmission time of the service to be transmitted of UE0 and the occupation end time of the occupation of the resource by UE1. Those skilled in the art may Set according to actual needs.

Example 2:

This embodiment is a terminal device that performs resource indication. As shown in FIG. 2, the terminal device includes: a processor 201 and a memory 202.

Determine available candidate resources from the above candidate resources according to the above-mentioned current and / or future resource occupancy information;

Optionally, the above processor is specifically configured to detect the current candidate resources according to one of the following resource granularities: the current channel, the set of sub-channels desired by the terminal, and the combination of transmission resources desired by the terminal.

The above processor is specifically used for decoding control signaling of the channel and / or subchannel set where the detected candidate resource is located; detecting the preamble of the channel and / or subchannel set where the detected candidate resource is located; And / or a set of sub-channels for channel energy detection.

Optionally, the processor is specifically configured to determine the occupation information of the channel and / or sub-channel set and / or transmission resource combination indicated by the control signaling according to the instruction information obtained by decoding the detected control signaling; or

The foregoing processor is specifically configured to determine the channel and / or sub-channel where the candidate resource is located based on the association relationship between the resource position where the detected preamble sequence is located and the channel and / or sub-channel set and / or transmission resource combination where the candidate resource is located Gather and / or send resource combination occupancy information; or

The above processor is specifically used to determine that the channel and / or sub-channel set where the corresponding candidate resource is located is occupied when it is determined that the result of channel energy detection reaches or exceeds a preset energy threshold.

The above processor is specifically configured to determine the preset energy threshold according to the first preset rule according to at least one of the following QoS requirement indicators of the service packet to be sent: priority, delay indicator, reliability requirement, coverage Distance, data transmission rate.

The above first preset rule includes at least one of the following:

The higher the priority of the service package to be sent, the greater the above-mentioned preset energy threshold;

The higher the reliability requirement of the service package to be sent, the smaller the above-mentioned preset energy threshold;

The smaller the delay index of the service packet to be sent, the greater the above-mentioned preset energy threshold;

The higher the coverage distance requirement of the service package to be sent, or the larger the maximum transmission power value corresponding to the coverage distance requirement of the service package to be sent, the smaller the above-mentioned preset energy threshold;

According to the mapping relationship between the transmission rate requirement of the service to be sent and the foregoing preset energy threshold.

The above processor is specifically configured to exclude unavailable candidate resources from the candidate resources according to the above-mentioned current and / or future resource occupancy information and according to the first preset rule, and to exclude the unavailable candidate resources The set of candidate resources is determined as the first set of candidate sending resources.

The above processor is specifically used to determine that the candidate resource is an unavailable candidate resource and determine the unavailable candidate resource when it is determined that the number of sending terminals currently occupying the candidate resource is greater than and / or equal to a preset threshold of the number of terminals exclude.

When it is determined that the service priority currently occupying the candidate resource is higher than the priority of the service packet to be sent, the candidate resource is determined to be an unavailable candidate resource, and the unavailable candidate resource is excluded.

When it is determined that the selected and / or pre-selected transmission resource combination in the future period overlaps with the candidate resource combination occupied by the service currently occupying the resource, the candidate resource combination is determined as an unavailable candidate resource combination, and the above unavailable resource combination is determined. Candidate resources are excluded.

The above-mentioned processor is specifically used to determine the duration of the reservation occupying the current channel and / or sub-channel set according to the detection result, or the resource combination expected to be occupied by the service packets to be sent by the remaining sending terminals, and then determine whether the candidate resource is unavailable The candidate resource used, when it is determined that the current resource is an unavailable candidate resource, then it is determined that the corresponding reservation continues to occupy the resource or the associated transmission resource combination is an unavailable candidate resource.

The above processor is specifically used to determine the number of transmitting terminals occupying the current channel / subchannel set by using at least one of the following characteristics of preamble sequences sent by different transmitting terminals: length of preamble sequence, sequence content of preamble sequence, preamble sequence The orthogonal coding index.

The above processor is specifically configured to determine the preset number of terminal thresholds according to the second preset rule according to at least one of the following QoS indicators of the service packet to be sent: priority, delay indicator, reliability requirement, coverage Distance requirements, data transmission rate requirements.

The above second preset rules include at least one of the following rules:

The higher the priority of the service package to be sent, the smaller the threshold value of the above-mentioned preset number of terminals;

The higher the reliability requirement of the service package to be sent, the greater the threshold value of the above-mentioned preset number of terminals;

The smaller the delay index of the service packet to be sent, the smaller the threshold value of the above-mentioned preset number of terminals;

The higher the coverage distance requirement of the service package to be sent, or the larger the maximum transmission power value corresponding to the coverage distance requirement of the service package to be sent, the greater the threshold value of the preset number of terminals;

According to the mapping relationship between the transmission rate requirement of the service to be sent and the preset threshold number of terminals.

The above processor is specifically used to determine the priority of the transmission service occupying the current channel and / or sub-channel set by decoding the instruction information obtained by the detected control signaling.

By detecting the preamble sequences of different lengths and / or the preamble sequences of different sequence contents and / or the preamble sequences of different orthogonal coding indexes, the transmission service priority occupying the current channel and / or subchannel set is determined.

By detecting the number of transmissions of the same preamble sequence on different time domain resources, the priority of the transmission service occupying the current channel and / or subchannel set is determined. The more transmission times of the above preamble sequence on different time domain resources, the occupied The priority of the transmission service of the current channel and / or sub-channel set is higher.

The above processor is specifically used for:

Detect the length of the above preamble sequence on each sub-channel;

Detect the above preamble sequence on each sub-channel, and determine the number and total length of the same preamble sequence detected;

The length of the above preamble sequence is detected according to the currently used resource pool or the total frequency domain resource size of the BWP.

The above processor is specifically used for:

The instruction information obtained by decoding the detected control instruction determines the duration of occupying the current channel and / or sub-channel set or the resource combination expected to be occupied by the service packets to be sent by the remaining sending terminals.

Determine the duration of occupying the current channel and / or subchannel set by decoding the resource location where the detected control signaling is located and the correspondence between the physical layer pass-through link control channel PSCCH and the physical pass-through link shared channel PSSCH The resource combination of the service packets to be sent by other sending terminals.

The resource position and / or length of the detected preamble sequence and / or sequence content and / or orthogonal coding index are used to determine the duration of occupying the current channel and / or subchannel set or the expected service packet to be sent by other transmitting terminal The combination of resources occupied.

Optionally, the above processor is specifically used for:

The foregoing processor is specifically configured to determine that the optional condition is satisfied when the number of time-domain resources where the number of available candidate resources exists is greater than or equal to the number of times the service packet to be sent should be sent.

Optionally, the above processor is specifically used for:

Randomly generate the waiting time according to the preset waiting time interval; determine the waiting time interval corresponding to the delay indicator according to the delay indicator in the QoS indicator of the service packet to be sent, and randomly generate the waiting time within the waiting time interval;

According to the priority index in the QoS index of the service packet to be sent, the waiting time interval corresponding to the priority index is determined, and the waiting time is randomly generated within the waiting time interval;

According to the reliability requirements in the QoS index of the service package to be sent, determine the waiting time interval corresponding to the reliability requirements, and randomly generate the waiting time within the waiting time interval;

According to the coverage distance requirement in the QoS index of the service package to be sent, the waiting time interval corresponding to the coverage distance requirement is determined, and the waiting time is randomly generated within the waiting time interval;

According to the data transmission rate requirement in the QoS index of the service packet to be sent, a waiting time interval corresponding to the data transmission rate requirement is determined, and the waiting time is randomly generated within the waiting time interval.

Optionally, the above processor is specifically used for:

The above processor is specifically used to send the above-mentioned service packet to be sent, control signaling, and / or preamble sequence on the transmission resource.

The above control signaling is used to indicate at least one of the following information: the priority of the service packet to be sent, the location of the occupied transmission resource, and the location of the combination of the occupied transmission resource.

The above processor is specifically configured to determine at least one of the following characteristics of the preamble sequence through at least one of the priority, delay index, reliability requirement, coverage distance requirement and data transmission rate requirement of the QoS index of the service packet to be sent : Index of resource location, sequence length, sequence content, orthogonal coding.

The above processor is specifically used for:

Sending the preamble sequence of the service packet to be sent on the starting subchannel for sending the service packet to be sent;

Repeatedly sending the preamble sequence of the service packet to be sent on multiple sub-channels of the service packet to be sent;

The preamble sequence of the service packet to be sent is sent on all frequency domain resources of the currently used resource pool or BWP.

Optionally, the above processor is specifically used for:

Determine the length corresponding to the preamble sequence according to the size of the set of sub-channels occupied by the service packet to be sent;

The length corresponding to the preamble sequence is determined according to the mapping relationship between at least one of the priority, delay index, reliability requirement, coverage distance requirement and data transmission rate requirement of the QoS index of the service packet to be sent ;

From the network side configuration or pre-configured preamble sequence length options, randomly select a preamble sequence length.

Optionally, the above processor is also used for:

Detect on some / all subsequent resources outside the above-mentioned transmission resource combination, determine that the occupied resource / resource combination conflicts with the above-mentioned transmission resource combination, and perform re-selection of the transmission resource combination; or

Detection is performed on some / all subsequent resources outside the above-mentioned transmission resource combination, and it is determined that the occupied resource / resource combination conflicts with the above-mentioned transmission resource combination, and the channel energy detection result exceeds the preset energy threshold. Choose; or

After using the sending resources to send the service package to be sent, if the feedback is not received when the preset time period is exceeded, the sending resource combination is reselected.

The above processor is specifically used to determine that the occupied resource / resource combination and the above-mentioned transmission resource combination overlap in a period of time in the future, and determine that the occupied resource / resource combination and the above-mentioned transmission resource combination conflict.

The above processor is specifically used to determine that the occupied resource / resource combination and the above transmission resource combination overlap in a period of time in the future, and determine that the occupied resource / resource combination has a higher service priority than the above-mentioned service package to be sent When determining the priority of the service, it is determined that the occupied resource / resource combination conflicts with the above-mentioned transmission resource combination.

Example three:

This embodiment is a device for indicating resources. The schematic diagram of the device is shown in FIG. 3. The device includes:

The resource detection unit 301 is configured to determine the current candidate resource when the service packet to be sent arrives;

The resource occupancy determination unit 302 is used to determine the current and / or future resource occupancy information according to the detection result;

The resource exclusion unit 303 is configured to determine available candidate resources from the candidate resources according to the resource occupancy information in the current and / or future period of time;

The resource selection unit 304 is configured to select a transmission resource from the available candidate resources and use the transmission resource to send the service packet to be sent.

Optionally, the resource detection unit is configured to detect the current candidate resources according to one of the following resource granularities: the current channel, the set of sub-channels that the terminal desires to select, and the combination of transmission resources that the terminal desires to select.

The above resource detection unit is used to decode the control signaling of the channel and / or subchannel set where the detected candidate resource is located; detect the preamble of the channel and / or subchannel set where the detected candidate resource is located; And / or a set of sub-channels for channel energy detection.

Optionally, the resource occupancy determination unit is configured to determine the occupancy information of the channel and / or sub-channel set and / or transmission resource combination indicated by the control signaling according to the instruction information obtained by decoding the detected control signaling; or

The resource occupancy determination unit is used to determine the channel and / or sub-channel of the candidate resource according to the association relationship between the resource location where the detected preamble sequence is located and the channel and / or sub-channel set and / or transmission resource combination of the candidate resource Channel set and / or transmission resource combination occupancy information; or

The above resource occupancy determination unit is used to determine that the channel and / or sub-channel set where the corresponding candidate resource is located is occupied when it is determined that the result of channel energy detection reaches or exceeds a preset energy threshold.

The above resource occupancy determination unit is used to determine the preset energy threshold according to the first preset rule according to at least one of the following QoS requirement indicators of the service packet to be sent: priority, delay index, reliability requirement, Coverage distance, data transmission rate.

The above first preset rule includes at least one of the following:

The above-mentioned resource exclusion unit is used to exclude unavailable candidate resources from the candidate resources according to the current and / or future resource occupancy information and according to the first preset rule, and to exclude the unavailable candidate resources The set of candidate resources is determined as the first set of candidate sending resources.

The resource exclusion unit is used to determine that the candidate resource is an unavailable candidate resource and determine the unavailable candidate resource when it is determined that the number of sending terminals currently occupying the candidate resource is greater than and / or equal to a preset threshold of the number of terminals exclude.

When it is determined that the current service priority of the candidate resource is higher than the priority of the service packet to be sent, the candidate resource is determined to be an unavailable candidate resource, and the unavailable candidate resource is excluded;

The above resource exclusion unit is used to determine the duration of the reservation occupying the current channel and / or subchannel set according to the detection result, or the estimated resource combination of the service packets to be sent by the remaining sending terminals, and then determine whether the candidate resource is unavailable The candidate resource used, when it is determined that the current resource is an unavailable candidate resource, then it is determined that the corresponding reservation continues to occupy the resource or the associated transmission resource combination is an unavailable candidate resource.

The above resource exclusion unit is used to determine the number of sending terminals occupying the current channel / subchannel set by using at least one of the following characteristics of the preamble sequences sent by different sending terminals: length of the preamble sequence, sequence content of the preamble sequence, preamble sequence The orthogonal coding index.

The above resource exclusion unit is used to determine the preset number of terminal thresholds according to the second preset rule according to at least one of the following QoS indicators of the service package to be sent: priority, delay indicator, reliability requirement, coverage Distance requirements, data transmission rate requirements.

The above second preset rules include at least one of the following rules:

The above resource exclusion unit is used to determine the priority of the transmission service occupying the current channel and / or sub-channel set by decoding the instruction information obtained by the detected control signaling.

Determine the transmission service priority occupying the current channel and / or sub-channel set by detecting the preamble sequences of different lengths and / or the preamble sequences of different sequence contents and / or the preamble sequences of different orthogonal coding indexes;

The above resource exclusion unit is used for:

Detect the length of the above preamble sequence on each sub-channel;

The above resource exclusion unit is used for:

Indication information obtained by decoding the detected control instruction to determine the duration of occupying the current channel and / or sub-channel set or the resource combination expected to be occupied by the service packets to be sent by the remaining sending terminals;

Determine the duration of occupying the current channel and / or subchannel set by decoding the resource location where the detected control signaling is located and the correspondence between the physical layer pass-through link control channel PSCCH and the physical pass-through link shared channel PSSCH The expected resource combination of the service packets to be sent by other sending terminals;

Optionally, the above resource selection unit is used for:

The above-mentioned resource selection unit is used to determine that the optional condition is satisfied when the number of time-domain resources where the number of available candidate resources exists is greater than or equal to the number of times the service packet to be sent should be sent.

Optionally, the above resource selection unit is used for:

Randomly generate the waiting time according to the preset waiting time interval; determine the waiting time interval corresponding to the delay indicator according to the delay indicator in the QoS indicator of the service packet to be sent, and randomly generate the waiting time within the waiting time interval

Optionally, the above resource selection unit is used for:

The resource selection unit is used to send the service packet to be sent, control signaling, and / or preamble sequence on the transmission resource.

The above resource selection unit is used to determine at least one of the following characteristics of the preamble sequence through at least one of the priority, delay index, reliability requirement, coverage distance requirement and data transmission rate requirement of the QoS index of the service packet to be sent : Index of resource location, sequence length, sequence content, orthogonal coding.

The above resource selection unit is specifically used for:

Optionally, the above resource selection unit is used for:

Optionally, the above resource selection unit is also used to:

The above resource selection unit is used to determine the occupied resource / resource combination and the above-mentioned transmission resource combination, and when there is an overlap in a period of time in the future, determine that the occupied resource / resource combination and the above-mentioned transmission resource combination conflict.

The above-mentioned resource selection unit is used to determine that the occupied resource / resource combination and the above-mentioned transmission resource combination overlap in a period of time in the future, and determine that the occupied resource / resource combination has a higher service priority than the above-mentioned service package to be sent When determining the priority of the service, it is determined that the occupied resource / resource combination conflicts with the above-mentioned transmission resource combination.

Example 4:

This embodiment provides a computer storage medium on which a computer program is stored, and when the program is executed by a processor, the steps of any method described in Embodiment 1 are implemented.

The present application is described above with reference to block diagrams and / or flowcharts showing methods, apparatuses (systems) and / or computer program products according to embodiments of the present application. It should be understood that one block of the block diagram and / or flowchart illustration and a combination of blocks of the block diagram and / or flowchart illustration can be implemented by computer program instructions. These computer program instructions may be provided to a general-purpose computer, a dedicated computer processor, and / or other programmable data processing devices to produce a machine, such that instructions executed via the computer processor and / or other programmable data processing devices are created for A method to implement the functions / actions specified in the block diagram and / or flowchart block.

Correspondingly, the application can also be implemented in hardware and / or software (including firmware, resident software, microcode, etc.). Further, the present application may take the form of a computer-usable or computer-readable storage medium on a computer-readable storage medium with computer-usable or computer-readable program code implemented in the medium to be used by an instruction execution system or Used in conjunction with an instruction execution system. In the context of this application, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, transmit, or transmit a program for use by an instruction execution system, apparatus, or device, or in conjunction with an instruction execution system, Use of device or equipment.

Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. In this way, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims

A method for resource selection includes:

When it is determined that the service package to be sent arrives, the current candidate resources are detected;

Determine the current and / or future resource occupancy information based on the detection results;

Determine available candidate resources from the candidate resources according to the current and / or future resource occupancy information;

Select a sending resource from the available candidate resources, and use the sending resource to send the service packet to be sent.
The method of claim 1, detecting the current candidate resources, comprising:

The current candidate resources are detected according to one of the following resource granularities:

Current channel

The set of sub-channels desired by the terminal;

The terminal expects the selected combination of transmission resources.
The method according to claim 1 or 2, detecting the current candidate resource includes at least one of the following ways:

Decode control signaling of the channel and / or sub-channel set where the detected candidate resource is located;

Detecting the preamble sequence of the channel and / or sub-channel set where the detected candidate resource is located;

Perform channel energy detection on the channel and / or subchannel set where the candidate resource is located.
The method of claim 3, determining the current and / or future resource occupancy information, including:

Determine the occupancy information of the channel and / or subchannel set and / or the combination of transmission resources indicated by the control signaling according to the instruction information obtained by decoding the detected control signaling; or

Determine the channel and / or sub-channel where the candidate resource is based on the resource location where the control signaling is located, and the correspondence between the resource location and the channel and / or sub-channel and / or transmission resource combination where the candidate resource is located Collect and / or send resource combination occupancy information.
The method of claim 3, determining the current and / or future resource occupancy information, including:

Determine the channel and / or sub-channel set and / or transmission of the candidate resource according to the association relationship between the detected resource position of the preamble sequence and the channel and / or sub-channel set and / or transmission resource combination of the candidate resource Resource combination occupancy information; or

According to the detected resource position where the same preamble sequence on the same time-domain resource is located, and the association relationship between the resource position where the preamble sequence is located and the channel and / or sub-channel set and / or transmission resource combination where the candidate resource is located, determine The channel and / or sub-channel set where the candidate resource is located and / or transmission resource combination occupation information; or

According to the association relationship between the detected resource combination occupied by the preamble sequence and the transmission resource combination, the transmission resource combination occupation information is determined.
The method of claim 3, determining the current and / or future resource occupancy information, including:

When it is determined that the result of channel energy detection reaches or exceeds a preset energy threshold, it is determined that the channel and / or sub-channel set where the corresponding candidate resource is located is occupied.
The method of claim 6, the manner of determining the preset energy threshold value comprises:

According to at least one of the following QoS requirement indicators of the service packet to be sent, the preset energy threshold is determined according to the first preset rule: priority, delay indicator, reliability requirement, coverage distance, and data transmission rate.
The method of claim 7, the first preset rule includes at least one of the following:

The higher the priority of the service packet to be sent, the greater the preset energy threshold;

The higher the reliability requirement of the service package to be sent, the smaller the preset energy threshold value;

The smaller the delay index of the service packet to be sent, the larger the preset energy threshold;

The higher the coverage distance requirement of the service package to be sent, or the larger the maximum transmission power value corresponding to the coverage distance requirement of the service package to be sent, the smaller the preset energy threshold;

According to the mapping relationship between the transmission rate requirement of the service to be sent and the preset energy threshold.
The method according to claim 1, determining available candidate resources from the candidate resources based on the current and / or future resource occupancy information as a first candidate transmission resource set, including:

According to the current and / or future resource occupancy information, according to the first preset rule, exclude unavailable candidate resources from the candidate resources, and determine the set of candidate resources after excluding unavailable candidate resources Send the resource set for the first candidate.
The method of claim 9, according to the current and / or future resource occupancy information, according to a first preset rule, exclude unavailable candidate resources from the candidate resources, including at least one of the following :

When it is determined that the number of sending terminals currently occupying the candidate resource is greater than and / or equal to a preset threshold of the number of terminals, the candidate resource is determined to be an unavailable candidate resource, and the unavailable candidate resource is excluded;

When it is determined that the service priority currently occupying the candidate resource is higher than the priority of the service packet to be sent, the candidate resource is determined to be an unavailable candidate resource, and the unavailable candidate resource is excluded;

When it is determined that the selected and / or pre-selected transmission resource combination in the future period overlaps with the candidate resource combination occupied by the service currently occupying the resource, the candidate resource combination is determined to be an unavailable candidate resource combination, and the Unavailable candidate resources are excluded.
The method of claim 10, determining that the candidate resources are occupied, and excluding unavailable candidate resources from the candidate resources according to the first preset rule, including:

According to the detection result, determine the duration of the reservation that occupies the current channel and / or subchannel set, or the resource combination expected to be occupied by the service packets to be sent by the remaining sending terminals, and then determine whether the candidate resource is an unavailable candidate resource When it is determined that the current resource is an unavailable candidate resource, it is determined that the corresponding reservation continues to occupy the resource or the associated transmission resource combination is an unavailable candidate resource.
The method of claim 10, determining the number of sending terminals currently occupying the candidate resource, comprising:

The number of transmitting terminals occupying the current channel / subchannel set is determined by at least one of the following characteristics of the preamble sequences sent by different transmitting terminals: length of the preamble sequence, sequence content of the preamble sequence, and orthogonal coding index of the preamble sequence.
The method of claim 10, determining the preset threshold of the number of terminals, comprising:

According to at least one of the following QoS indicators of the service packet to be sent, determine the preset threshold of the number of terminals according to the second preset rule: priority, delay indicator, reliability requirement, coverage distance requirement, data transmission rate demand.
The method of claim 13, the second preset rule includes at least one of the following rules:

The higher the priority of the service package to be sent, the smaller the threshold value of the preset number of terminals;

The higher the reliability requirements of the service package to be sent, the greater the threshold value of the preset number of terminals;

The smaller the delay index of the service packet to be sent, the smaller the threshold value of the preset number of terminals;

The higher the coverage distance requirement of the service package to be sent, or the larger the maximum transmission power value corresponding to the coverage distance requirement of the service package to be sent, the greater the preset threshold of the number of terminals;

According to the mapping relationship between the transmission rate requirement of the service to be sent and the preset threshold number of terminals.
The method of claim 10, determining the service priority currently occupying the candidate resource in at least one of the following ways, comprising:

Determining the priority of the transmission service occupying the current channel and / or sub-channel set by decoding the instruction information obtained by the detected control signaling;

Determine the transmission service priority occupying the current channel and / or sub-channel set by detecting the preamble sequences of different lengths and / or the preamble sequences of different sequence contents and / or the preamble sequences of different orthogonal coding indexes;

By detecting the number of transmissions of the same preamble sequence on different time domain resources, the priority of the transmission service occupying the current channel and / or subchannel set is determined. The more the number of transmissions of the preamble sequence on different time domain resources, then The priority of the transmission service occupying the current channel and / or sub-channel set is higher.
The method of claim 15, comprising: detecting preamble sequences of different lengths in at least one of the following ways:

Detect the length of the preamble sequence on each subchannel;

Detecting the preamble sequence on each sub-channel, and determining the number and total length of the same preamble sequence detected;

The length of the preamble sequence is detected according to the currently used resource pool or the total frequency domain resource size of the partial bandwidth BWP.
The method according to claim 11, determining the duration of occupying the current channel and / or sub-channel set or the resource combination expected to be occupied by the service packets to be sent by other sending terminals according to the detection result, including:

Indication information obtained by decoding the detected control instruction to determine the duration of occupying the current channel and / or sub-channel set or the resource combination expected to be occupied by the service packets to be sent by the remaining sending terminals;

Determine the duration of occupying the current channel and / or subchannel set by decoding the resource location where the detected control signaling is located and the correspondence between the physical layer pass-through link control channel PSCCH and the physical pass-through link shared channel PSSCH The expected resource combination of the service packets to be sent by other sending terminals;

The resource position and / or length of the detected preamble sequence and / or sequence content and / or orthogonal coding index are used to determine the duration of occupying the current channel and / or subchannel set or the expected service packet to be sent by other transmitting terminal The combination of resources occupied.
The method of claim 9, selecting a transmission resource from the available candidate resources, comprising:

When it is determined that the first candidate transmission resource set satisfies the optional condition, a transmission resource is selected from the first candidate transmission resource set, or a waiting time is generated, and when it is determined that the waiting time reaches the waiting time, the first candidate The set of sending resources selects sending resources; or

The first candidate transmission resource set does not satisfy the optional condition, and a waiting time is generated. When the waiting time is determined to reach the waiting time, the candidate resource at that time is detected again, and the transmission resource is selected according to the result of the detection again.
The method of claim 18, satisfying optional conditions, comprising:

When it is determined that the number of available domain resources where the number of available candidate resources is located is greater than or equal to the number of times that the service packet to be sent should be sent, it is determined that the optional condition is satisfied.
The method according to claim 18, re-detecting the candidate resource at that time, and selecting the transmission resource according to the result of the re-detection, comprising:

When it is determined that the second detection is performed again, the obtained first set of candidate transmission resources does not satisfy the optional condition, and the time to receive the service package to be sent exceeds the delay index of the service package to be sent, the Discard the sending service package; or

When it is determined that the first candidate transmission resource set does not satisfy the optional condition after the detection is performed again, it is determined that the current number of re-detections / total number of detections exceeds the preset detection number threshold, and the service packet to be sent is discarded / Random resource selection / trigger candidate resource reselection; when it is determined that the current number of re-detections / total number of detections does not exceed the threshold of the preset number of detections, a waiting time is generated and re-detection is performed.
The method of claim 18, the waiting time is generated in at least one of the following ways:

Randomly generate the waiting time according to the preset waiting time interval; determine the waiting time interval corresponding to the delay indicator according to the delay indicator in the QoS indicator of the service packet to be sent, and randomly generate the waiting time within the waiting time interval;

According to the priority index in the QoS index of the service packet to be sent, the waiting time interval corresponding to the priority index is determined, and the waiting time is randomly generated within the waiting time interval;

According to the reliability requirements in the QoS index of the service package to be sent, determine the waiting time interval corresponding to the reliability requirements, and randomly generate the waiting time within the waiting time interval;

According to the coverage distance requirement in the QoS index of the service package to be sent, the waiting time interval corresponding to the coverage distance requirement is determined, and the waiting time is randomly generated within the waiting time interval;

According to the data transmission rate requirement in the QoS index of the service packet to be sent, a waiting time interval corresponding to the data transmission rate requirement is determined, and the waiting time is randomly generated within the waiting time interval.
The method of claim 18, selecting a transmission resource from the first candidate transmission resource set includes:

When it is determined that there are available candidate resources equal to the number of times that the service packet to be sent should be sent, determining the available candidate resources as sending resources;

When it is determined that the number of available candidate resources is greater than the number of times that the service packet to be sent should be sent, randomly select a transmission resource from the plurality of available candidate resources, or, the available candidate resource with the lowest channel energy detection result at a preset ratio , Randomly select the sending resource.
The method of claim 1, and using the sending resource to send the service packet to be sent comprises:

Sending the service packet to be sent and control signaling, and / or preamble sequence on the sending resource.
The method according to claim 23, the control signaling can be used to indicate at least one of the following information: the priority of the service packet to be sent, the location of the occupied transmission resource, and the location of the combination of the occupied transmission resource.
The method according to claim 23, wherein at least one of the following of the preamble sequence is determined by at least one of the priority, delay index, reliability requirement, coverage distance requirement, and data transmission rate requirement of the QoS index of the service packet to be sent One feature: resource location, sequence length, sequence content, and index of orthogonal coding.
The method of claim 23, the preamble sequence is transmitted in at least one of the following ways:

Sending the preamble sequence of the service packet to be sent on the starting sub-channel for sending the service packet to be sent;

Repeatedly sending the preamble sequence of the service packet to be sent on multiple sub-channels of the service packet to be sent;

The preamble sequence of the service packet to be sent is sent on all frequency domain resources of the currently used resource pool or BWP.
The method of claim 23, the length of the preamble sequence is determined in at least one of the following ways:

Determine the length corresponding to the preamble sequence according to the size of the set of sub-channels occupied by the service packet to be sent;

Determine the preamble sequence according to the mapping relationship between at least one of the priority, delay index, reliability requirement, coverage distance requirement and data transmission rate requirement of the QoS index of the service packet to be sent Corresponding length;

From the network side configuration or pre-configured preamble sequence length options, randomly select a preamble sequence length.
The method of claim 1, using the sending resource to send the service packet to be sent, further comprising:

Detecting on some / all subsequent resources outside the transmission resource combination, determining that the occupied resource / resource combination conflicts with the transmission resource combination, and reselecting the transmission resource combination; or

Perform detection on some / all subsequent resources outside the transmission resource combination, determine that the occupied resource / resource combination conflicts with the transmission resource combination, and the channel energy detection result exceeds a preset energy threshold, and perform transmission resource Re-election of combinations; or

After using the sending resources to send the service package to be sent, if the feedback is not received when the preset time period is exceeded, the sending resource combination is reselected.
The method of claim 28, determining that the occupied resource / resource combination conflicts with the transmission resource combination, including:

It is determined that the occupied resource / resource combination and the transmission resource combination overlap in a period of time in the future, and it is determined that the occupied resource / resource combination and the transmission resource combination conflict.
The method of claim 28, determining that the occupied resource / resource combination conflicts with the transmission resource combination, including:

When it is determined that the occupied resource / resource combination and the transmission resource combination overlap in a period of time in the future, and it is determined that the service priority of the occupied resource / resource combination is higher than the service priority of the service package to be sent To determine that the occupied resource / resource combination conflicts with the transmission resource combination.
A terminal device for resource indication, the terminal device includes: a processor and a memory, wherein the processor is used to read a program in the memory and perform the following process:

When it is determined that the service package to be sent arrives, the current candidate resources are detected;

Determine the current and / or future resource occupancy information based on the detection results;

Determine available candidate resources from the candidate resources according to the current and / or future resource occupancy information;

Select a sending resource from the available candidate resources, and use the sending resource to send the service packet to be sent.
The terminal device according to claim 31, wherein the processor is specifically configured to:

The current candidate resources are detected according to one of the following resource granularities: the current channel, the set of subchannels that the terminal desires to select, and the combination of transmission resources that the terminal desires to select.
The terminal device according to claim 31 or 32, wherein the processor is specifically configured to:

Decode control signaling of the channel and / or sub-channel set where the detected candidate resource is located;

Detecting the preamble sequence of the channel and / or sub-channel set where the detected candidate resource is located;

Perform channel energy detection on the channel and / or subchannel set where the candidate resource is located.
The terminal device according to claim 33, wherein the processor is specifically configured to:

Determine the occupancy information of the channel and / or subchannel set and / or the combination of transmission resources indicated by the control signaling according to the instruction information obtained by decoding the detected control signaling; or

Determine the channel and / or sub-channel where the candidate resource is based on the resource location where the control signaling is located, and the correspondence between the resource location and the channel and / or sub-channel and / or transmission resource combination where the candidate resource is located Collect and / or send resource combination occupancy information.
The terminal device according to claim 33, wherein the processor is specifically configured to:

Determine the channel and / or sub-channel set and / or transmission of the candidate resource according to the association relationship between the detected resource position of the preamble sequence and the channel and / or sub-channel set and / or transmission resource combination of the candidate resource Resource combination occupancy information; or

According to the detected resource position where the same preamble sequence on the same time-domain resource is located, and the association relationship between the resource position where the preamble sequence is located and the channel and / or sub-channel set and / or transmission resource combination where the candidate resource is located, determine The channel and / or sub-channel set where the candidate resource is located and / or transmission resource combination occupation information; or

According to the association relationship between the detected resource combination occupied by the preamble sequence and the transmission resource combination, the transmission resource combination occupation information is determined.
The terminal device according to claim 33, wherein the processor is specifically configured to:

When it is determined that the result of channel energy detection reaches or exceeds a preset energy threshold, it is determined that the channel and / or sub-channel set where the corresponding candidate resource is located is occupied.
The terminal device according to claim 36, wherein the processor is specifically configured to:

According to at least one of the following QoS requirement indicators of the service packet to be sent, the preset energy threshold is determined according to the first preset rule: priority, delay indicator, reliability requirement, coverage distance, and data transmission rate.
The terminal device according to claim 37, wherein the first preset rule includes at least one of the following:

The higher the priority of the service packet to be sent, the greater the preset energy threshold;

The higher the reliability requirement of the service package to be sent, the smaller the preset energy threshold value;

The smaller the delay index of the service packet to be sent, the larger the preset energy threshold;

The higher the coverage distance requirement of the service package to be sent, or the larger the maximum transmission power value corresponding to the coverage distance requirement of the service package to be sent, the smaller the preset energy threshold;

According to the mapping relationship between the transmission rate requirement of the service to be sent and the preset energy threshold.
The terminal device according to claim 31, wherein the processor is specifically configured to:

According to the current and / or future resource occupancy information, according to the first preset rule, exclude unavailable candidate resources from the candidate resources, and determine the set of candidate resources after excluding unavailable candidate resources Send the resource set for the first candidate.
The terminal device according to claim 39, wherein the processor is specifically configured to:

When it is determined that the number of sending terminals currently occupying the candidate resource is greater than and / or equal to a preset threshold of the number of terminals, the candidate resource is determined to be an unavailable candidate resource, and the unavailable candidate resource is excluded;

When it is determined that the service priority currently occupying the candidate resource is higher than the priority of the service packet to be sent, the candidate resource is determined to be an unavailable candidate resource, and the unavailable candidate resource is excluded;

When it is determined that the selected and / or pre-selected transmission resource combination in the future period overlaps with the candidate resource combination occupied by the service currently occupying the resource, the candidate resource combination is determined to be an unavailable candidate resource combination, and the Unavailable candidate resources are excluded.
The terminal device according to claim 40, wherein the processor is specifically configured to:

According to the detection result, determine the duration of the reservation that occupies the current channel and / or subchannel set, or the resource combination expected to be occupied by the service packets to be sent by the remaining sending terminals, and then determine whether the candidate resource is an unavailable candidate resource When it is determined that the current resource is an unavailable candidate resource, it is determined that the corresponding reservation continues to occupy the resource or the associated transmission resource combination is an unavailable candidate resource.
The terminal device according to claim 40, wherein the processor is specifically configured to:

The number of transmitting terminals occupying the current channel / subchannel set is determined by at least one of the following characteristics of the preamble sequences sent by different transmitting terminals: length of the preamble sequence, sequence content of the preamble sequence, and orthogonal coding index of the preamble sequence.
The terminal device according to claim 40, wherein the processor is specifically configured to:

According to at least one of the following QoS indicators of the service packet to be sent, determine the preset threshold of the number of terminals according to the second preset rule: priority, delay indicator, reliability requirement, coverage distance requirement, data transmission rate demand.
The terminal device according to claim 43, the second preset rule includes at least one of the following rules:

The higher the priority of the service package to be sent, the smaller the threshold value of the preset number of terminals;

The higher the reliability requirements of the service package to be sent, the greater the threshold value of the preset number of terminals;

The smaller the delay index of the service packet to be sent, the smaller the threshold value of the preset number of terminals;

The higher the coverage distance requirement of the service package to be sent, or the larger the maximum transmission power value corresponding to the coverage distance requirement of the service package to be sent, the greater the preset threshold of the number of terminals;

According to the mapping relationship between the transmission rate requirement of the service to be sent and the preset threshold number of terminals.
The terminal device according to claim 40, wherein the processor is specifically configured to:

Determining the priority of the transmission service occupying the current channel and / or sub-channel set by decoding the instruction information obtained by the detected control signaling;

Determine the transmission service priority occupying the current channel and / or sub-channel set by detecting the preamble sequences of different lengths and / or the preamble sequences of different sequence contents and / or the preamble sequences of different orthogonal coding indexes;

By detecting the number of transmissions of the same preamble sequence on different time domain resources, the priority of the transmission service occupying the current channel and / or subchannel set is determined. The more the number of transmissions of the preamble sequence on different time domain resources, then The priority of the transmission service occupying the current channel and / or sub-channel set is higher.
The terminal device according to claim 45, wherein the processor is specifically configured to:

Detect the length of the preamble sequence on each subchannel;

Detecting the preamble sequence on each sub-channel, and determining the number and total length of the same preamble sequence detected;

The length of the preamble sequence is detected according to the currently used resource pool or the total frequency domain resource size of the BWP.
The terminal device according to claim 41, wherein the processor is specifically configured to:

Indication information obtained by decoding the detected control instruction to determine the duration of occupying the current channel and / or sub-channel set or the resource combination expected to be occupied by the service packets to be sent by the remaining sending terminals;

Determine the duration of occupying the current channel and / or subchannel set by decoding the resource location where the detected control signaling is located and the correspondence between the physical layer pass-through link control channel PSCCH and the physical pass-through link shared channel PSSCH The expected resource combination of the service packets to be sent by other sending terminals;

The resource position and / or length of the detected preamble sequence and / or sequence content and / or orthogonal coding index are used to determine the duration of occupying the current channel and / or subchannel set or the expected service packet to be sent by other transmitting terminal The combination of resources occupied.
The terminal device according to claim 39, wherein the processor is specifically configured to:

When it is determined that the first candidate transmission resource set satisfies the optional condition, a transmission resource is selected from the first candidate transmission resource set, or a waiting time is generated, and when it is determined that the waiting time reaches the waiting time, the first candidate The set of sending resources selects sending resources; or

The first candidate transmission resource set does not satisfy the optional condition, and a waiting time is generated. When the waiting time is determined to reach the waiting time, the candidate resource at that time is detected again, and the transmission resource is selected according to the result of the detection again.
The terminal device of claim 48, the processor is specifically configured to:

When it is determined that the number of available domain resources where the number of available candidate resources is located is greater than or equal to the number of times that the service packet to be sent should be sent, it is determined that the optional condition is satisfied.
The terminal device of claim 48, the processor is specifically configured to:

When it is determined that the second detection is performed again, the obtained first set of candidate transmission resources does not satisfy the optional condition, and the time to receive the service package to be sent exceeds the delay index of the service package to be sent, the Discard the sending service package; or

When it is determined that the first candidate transmission resource set does not satisfy the optional condition after the detection is performed again, it is determined that the current number of re-detections / total number of detections exceeds the preset detection number threshold, and the service packet to be sent is discarded / Random resource selection / trigger candidate resource reselection; when it is determined that the current number of re-detections / total number of detections does not exceed the threshold of the preset number of detections, a waiting time is generated and re-detection is performed.
The terminal device according to claim 38, wherein the processor is specifically configured to:

Randomly generate the waiting time according to the preset waiting time interval; determine the waiting time interval corresponding to the delay indicator according to the delay indicator in the QoS indicator of the service packet to be sent, and randomly generate the waiting time within the waiting time interval;

According to the priority index in the QoS index of the service packet to be sent, the waiting time interval corresponding to the priority index is determined, and the waiting time is randomly generated within the waiting time interval;

According to the reliability requirements in the QoS index of the service package to be sent, determine the waiting time interval corresponding to the reliability requirements, and randomly generate the waiting time within the waiting time interval;

According to the coverage distance requirement in the QoS index of the service package to be sent, the waiting time interval corresponding to the coverage distance requirement is determined, and the waiting time is randomly generated within the waiting time interval;

According to the data transmission rate requirement in the QoS index of the service packet to be sent, a waiting time interval corresponding to the data transmission rate requirement is determined, and the waiting time is randomly generated within the waiting time interval.
The terminal device according to claim 38, wherein the processor is specifically configured to:

When it is determined that there are available candidate resources equal to the number of times that the service packet to be sent should be sent, determining the available candidate resources as sending resources;

When it is determined that the number of available candidate resources is greater than the number of times that the service packet to be sent should be sent, randomly select a transmission resource from the plurality of available candidate resources, or, the available candidate resource with the lowest channel energy detection result at a preset ratio , Randomly select the sending resource.
The terminal device according to claim 31, wherein the processor is specifically configured to:

Sending the service packet to be sent and control signaling, and / or preamble sequence on the sending resource.
The terminal device according to claim 53, wherein the control signaling is used to indicate at least one of the following information: the priority of the service packet to be sent, the location of occupied transmission resources, and the combined location of occupied transmission resources.
The terminal device according to claim 53, wherein the processor is specifically configured to pass at least one of the priority, delay index, reliability requirement, coverage distance requirement, and data transmission rate requirement of the QoS index of the service packet to be sent One is to determine at least one of the following characteristics of the preamble sequence: resource location, sequence length, sequence content, and index of orthogonal coding.
The terminal device according to claim 53, wherein the processor is specifically configured to:

Sending the preamble sequence of the service packet to be sent on the starting sub-channel for sending the service packet to be sent;

Repeatedly sending the preamble sequence of the service packet to be sent on multiple sub-channels of the service packet to be sent;

The preamble sequence of the service packet to be sent is sent on all frequency domain resources of the currently used resource pool or BWP.
The terminal device according to claim 53, wherein the processor is specifically configured to:

Determine the length corresponding to the preamble sequence according to the size of the set of sub-channels occupied by the service packet to be sent;

Determine the preamble sequence according to the mapping relationship between at least one of the priority, delay index, reliability requirement, coverage distance requirement and data transmission rate requirement of the QoS index of the service packet to be sent Corresponding length;

From the network side configuration or pre-configured preamble sequence length options, randomly select a preamble sequence length.
The terminal device of claim 31, the processor is further configured to:

Detecting on some / all subsequent resources outside the transmission resource combination, determining that the occupied resource / resource combination conflicts with the transmission resource combination, and reselecting the transmission resource combination; or

Perform detection on some / all subsequent resources outside the transmission resource combination, determine that the occupied resource / resource combination conflicts with the transmission resource combination, and the channel energy detection result exceeds a preset energy threshold, and perform transmission resource Re-election of combinations; or

After using the sending resources to send the service package to be sent, if the feedback is not received when the preset time period is exceeded, the sending resource combination is reselected.
The terminal device of claim 58, the processor is specifically configured to:

It is determined that the occupied resource / resource combination and the transmission resource combination overlap in a period of time in the future, and it is determined that the occupied resource / resource combination and the transmission resource combination conflict.
The terminal device according to claim 31, wherein the processor is specifically configured to:

When it is determined that the occupied resource / resource combination and the transmission resource combination overlap in a period of time in the future, and it is determined that the service priority of the occupied resource / resource combination is higher than the service priority of the service package to be sent To determine that the occupied resource / resource combination conflicts with the transmission resource combination.
A computer storage medium on which a computer program is stored, which when executed by a processor implements the steps of the method according to any one of claims 1 to 30.