CN111182639B

CN111182639B - Transmission resource determining method and related equipment

Info

Publication number: CN111182639B
Application number: CN202010007371.8A
Authority: CN
Inventors: 邹蕾; 曲鑫
Original assignee: Spreadtrum Semiconductor Nanjing Co Ltd
Current assignee: Spreadtrum Semiconductor Nanjing Co Ltd
Priority date: 2020-01-03
Filing date: 2020-01-03
Publication date: 2023-04-28
Anticipated expiration: 2040-01-03
Also published as: CN111182639A

Abstract

The embodiment of the application discloses a transmission resource determining method and related equipment, wherein the method comprises the following steps: the method comprises the steps that first user equipment obtains first data to be sent, and under the condition that a resource selection triggering condition for the first data is determined to be met, a first candidate time domain unit in a resource selection window is determined according to first resource occupation information; the first user equipment determines a second time domain unit uniquely corresponding to each reservation period in the reservation period set in a resource selection window according to the first time domain unit; the time interval between the second time domain unit and the first time domain unit is an integer multiple of a reserved period corresponding to the second time domain unit; the first user equipment excludes the second time domain unit from the first candidate time domain units, and determines a target time domain unit for transmitting the first data from the first candidate time domain units remaining after the exclusion. The accuracy of resource determination can be improved through the method and the device.

Description

Transmission resource determining method and related equipment

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a method for determining transmission resources and related devices.

Background

A secondary link (SL, also called secondary link, sidelink, or Sidelink, etc.) is a communication link between a User Equipment (UE) and the UE. In practical use, a certain resource pool is generally established, the resource pool corresponds to a certain frequency domain resource, and a certain range of UEs can communicate with other UEs based on a part of the frequency domain resource at a certain time. It will be appreciated that the resources used by different UEs when communicating cannot collide with each other, i.e. the different UEs cannot use the same frequency domain resources at the same time or in the same time domain unit. Therefore, when the UE does not need to transmit the data packet, the UE perceives the occupation condition of other UE on the resources in the resource pool in real time, and further when the data packet needs to be transmitted, the UE carries out resource selection according to the occupation condition of the resources perceived before, and accordingly the data packet is transmitted according to the selected resources.

The UE perceives the resource occupation situation of other UEs through a signal receiving manner, that is, the UE receives physical layer auxiliary link control channel (Pysical Sidelink Control Channel, PSCCH) data and physical layer auxiliary link shared information (PSSCH Pysical Sidelink Share Channel, PSCCH) data of other UEs, and the PSCCH contains the resource occupation situation of other UEs. However, the existing UE generally adopts a half duplex working mechanism, that is, the data transmission and the data reception cannot be performed simultaneously, if the UE is transmitting data, the PSCCH data cannot be received, that is, the resource occupation condition of other UEs when the UE is transmitting data cannot be perceived, and further, the SL resource cannot be accurately selected for data transmission.

Disclosure of Invention

The application provides a transmission resource determining method and related equipment, by which the accuracy of user equipment on SL resource selection can be improved.

An embodiment of the present application provides a method for determining transmission resources, including:

the method comprises the steps that first user equipment obtains first data to be sent, and under the condition that a resource selection triggering condition for the first data is determined to be met, a first candidate time domain unit in a resource selection window is determined according to first resource occupation information; the resource selection window is a time window including a plurality of time domain units for transmitting data; the first resource occupation information is the resource occupation information received by the first user equipment in a resource sensing window; the resource awareness window is a time window of a first preset duration before the moment when the resource selection triggering condition is determined to be met for the first data;

the first user equipment determines a second time domain unit uniquely corresponding to each reservation period in the reservation period set in a resource selection window according to the first time domain unit; the first time domain unit is a time domain unit for the first user equipment to send data in the resource sensing window; the reserved period set comprises a plurality of reserved periods with unequal values, and the reserved periods are preset data transmission periods; the time interval between the second time domain unit and the first time domain unit is an integer multiple of a reserved period corresponding to the second time domain unit;

The first user equipment excludes the second time domain unit from the first candidate time domain units, and determines a target time domain unit for transmitting the first data from the first candidate time domain units remaining after the exclusion.

With reference to the first aspect, in a first possible implementation manner,

the first user equipment excluding the second time domain unit from the first candidate time domain unit includes:

the first user equipment determines any reservation period in the reservation period set as a first reservation period, and excludes a second time domain unit corresponding to the first reservation period from the first candidate time domain units;

the first user equipment judges whether the ratio of the number of the first candidate time domain units remained after the current elimination to the total number of the time domain units in the resource selection window is larger than or equal to a first threshold value;

if the judgment result is yes, the first user equipment redetermines the reserved periods except the first reserved period in the reserved period set into the first reserved period, and returns to execute the second time domain unit corresponding to the first reserved period to be removed from the first candidate time domain unit;

And under the condition that the judgment result is negative, the first user equipment stops excluding the second time domain unit from the first candidate time domain unit, and restores the second time domain unit which is excluded this time to the first candidate time domain unit.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner,

the first user equipment determining any reservation period in the reservation period set as a first reservation period, and the excluding the second time domain unit corresponding to the first reservation period from the first candidate time domain unit includes:

the first user equipment determines the smallest reservation period in the reservation period set as the first reservation period, and excludes a second time domain unit corresponding to the first reservation period from the first candidate time domain units;

and if the determination result is yes, the first user equipment redetermines the reserved periods except the first reserved period in the reserved period set to be the first reserved period, and the returning to execute the removing the second time domain unit corresponding to the first reserved period from the first candidate time domain unit includes:

And if the judgment result is yes and the reservation period greater than the first reservation period exists in the reservation periods, the first user equipment redetermines the minimum reservation period greater than the first reservation period in the reservation period set as the first reservation period, and returns to execute the second time domain unit corresponding to the first reservation period to be excluded from the first candidate time domain units.

With reference to the first aspect, in a third possible implementation manner,

before determining the first candidate time domain unit in the resource selection window, the method further includes:

the first user equipment judges whether resource auxiliary management equipment exists in a preset distance range;

in the case that the resource auxiliary management device exists, the first user equipment sends an auxiliary information acquisition request for the first time domain unit to the resource auxiliary management device; the auxiliary information acquisition request is used by the resource auxiliary management equipment to send second resource occupation information corresponding to the first time domain unit to the first user equipment;

the first user equipment acquires the first resource occupation information, determines a second candidate time domain unit corresponding to the first resource occupation information in the resource selection window according to the first resource occupation information and the second resource occupation information, and determines a target time domain unit used for transmitting the first data from the second candidate time domain unit;

And in the absence of the resource auxiliary management device, executing the first candidate time domain unit in the resource selection window according to the first resource occupation information.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner,

the second resource occupation information comprises resource occupation information of which the second user equipment is in a period by taking the first time domain unit as a starting point and taking a second reservation period as a period aiming at least one first frequency domain unit corresponding to the first time domain unit; the second user equipment is user equipment within the same resource use range as the first user equipment;

the determining, according to the first resource occupancy information and the second resource occupancy information, a corresponding second candidate time domain unit in the resource selection window includes:

the first user equipment acquires frequency domain unit requirement information of the first data;

the first user equipment determines the number of first available frequency domain units corresponding to a third time domain unit according to the resource occupation information of the first frequency domain unit in the second resource occupation information, wherein the third time domain resource is determined according to the first time domain unit and the second reservation period, and the second user equipment corresponds to the time domain unit in the resource selection window;

And the first user equipment determines the third time domain unit as a second candidate time domain unit under the condition that the number of the first available frequency domain units is matched with the frequency domain unit demand information of the first data.

With reference to the first aspect, in a fifth possible implementation manner, the determining, by the first user equipment, a second time domain unit that uniquely corresponds to each reservation period in the reservation period set within the resource selection window according to the first time domain unit includes:

when a first time domain unit is taken as a starting point, and a corresponding fourth time domain unit is in the resource selection window after the duration of a fourth reservation period, the first user equipment determines the fourth time domain unit as a second time domain unit uniquely corresponding to the fourth reservation period in the resource selection window; the fourth reservation period is any reservation period of the set of reservation periods.

With reference to the first aspect, in a sixth possible implementation manner, the determining, by the first user equipment, according to the first time domain unit, a second time domain unit that uniquely corresponds to each reservation period in the reservation period set within the resource selection window includes:

When a first time domain unit is taken as a starting point, and a fifth time domain unit corresponding to the first time domain unit after the duration of a fifth reservation period is passed is between the resource sensing window and the resource selecting window, the first user equipment determines the fifth time domain unit as a pointer time domain unit, and judges the time domain positions of a sixth time domain unit corresponding to the first time domain unit and the resource selecting window after the duration of the fifth reservation period is passed by taking the pointer time domain unit as the starting point; the fifth reservation period is any reservation period in the set of reservation periods;

if the sixth time domain unit is in the resource selection window, the first user equipment determines the sixth time domain unit as one second time domain unit which is uniquely corresponding to the fifth reservation period in the resource selection window;

if the sixth time domain unit is between the resource sensing window and the resource selecting window, the first user equipment redetermines the sixth time domain unit as the pointer time domain unit, and returns to execute the judgment, taking the pointer time domain unit as a starting point, and passing through the time domain position of the corresponding sixth time domain unit and the resource selecting window after the duration of a fifth reservation period.

A second aspect of an embodiment of the present application provides a first user equipment, including:

the candidate resource determining module is used for acquiring first data to be transmitted, and determining a first candidate time domain unit in a resource selection window according to first resource occupation information under the condition that the resource selection triggering condition for the first data is determined to be met; the resource selection window is a time window including a plurality of time domain units for transmitting data; the first resource occupation information is the resource occupation information received by the first user equipment in a resource sensing window; the resource awareness window is a time window of a first preset duration before the moment when the resource selection triggering condition is determined to be met for the first data;

the occupied resource determining module is used for determining a second time domain unit uniquely corresponding to each reservation period in the reservation period set in the resource selection window according to the first time domain unit; the first time domain unit is a time domain unit for the first user equipment to send data in the resource sensing window; the reserved period set comprises a plurality of reserved periods with unequal values, and the reserved periods are preset data transmission periods; the time interval between the second time domain unit and the first time domain unit is an integer multiple of a reserved period corresponding to the second time domain unit;

And the target resource determining module is used for excluding the second time domain unit from the first candidate time domain units and determining a target time domain unit for transmitting the first data from the first candidate time domain units remained after the exclusion.

A third aspect of the embodiments provides a communication device that may include a processor and a memory;

the processor is connected to a memory, wherein the memory is configured to store program codes, and the processor is configured to execute the program codes stored in the memory, so as to implement the method in the first aspect and its implementation manners.

A fourth aspect of the present embodiments provides a computer storage medium storing a computer program which, when executed by a processor, causes the processor to perform the method of any one of the above aspects.

A fifth aspect of embodiments of the present application provides a communication chip, which may include: a processor, and one or more interfaces coupled to the processor. The processor may be configured to call, from the memory, an implementation program of the transmission resource determining method provided in any one of the above aspects, and execute instructions included in the program. The interface may be configured to output a transmission resource determination result of the processor.

A sixth aspect of the embodiments of the present application provides a computer program product comprising instructions which, when run on a processor, cause the processor to perform the transmission resource determination method described in any of the above aspects.

In the embodiment of the present application, after first user equipment obtains first data to be sent, under the condition that it is determined that a resource selection triggering condition for the first data is met, according to first resource occupation information received in a resource sensing window, a first candidate time domain unit in the resource selection window is determined, where the resource selection window is a time window including a plurality of time domain units for sending data, and the resource sensing window is a time window of a first preset duration before a time when the first user equipment determines that the resource selection triggering condition for the first data is met. The method comprises the steps that a first user equipment determines a second time domain unit which is uniquely corresponding to each reservation period in a reservation period set in a resource selection window according to a first time domain unit, wherein the first time domain unit is a time domain unit for the first user equipment to send data in a resource sensing window, the reservation period set comprises a plurality of reservation periods with unequal values, the reservation periods are preset data transmission periods, and the time interval between the second time domain unit and the first time domain unit is integral multiple of the reservation period corresponding to the second time domain unit; and the first user equipment excludes the second time domain unit from the first candidate time domain units, and determines a target data unit for transmitting the first data from the first candidate time domain units remained after the exclusion. The first user equipment excludes resources occupied by other user equipment according to the perceived first resource occupation information, and the accuracy of selecting resources by the first user equipment is improved by excluding the corresponding second time domain unit of the reserved period in the resource selection window and the resources in two aspects.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a SL resource pool according to an embodiment of the present application;

fig. 2 is a schematic architecture diagram of a transmission resource determining system according to an embodiment of the present application;

fig. 3 is a flowchart of a transmission resource determining method provided in an embodiment of the present application;

FIG. 4 is a schematic diagram of a time window for selecting resources according to an embodiment of the present application;

fig. 5 is a schematic diagram of determining a first candidate time domain unit according to an embodiment of the present application;

fig. 6 is a schematic diagram of determining a second time domain unit according to an embodiment of the present application;

FIG. 7 is a schematic diagram of another determination of a second time domain unit provided by an embodiment of the present application;

FIG. 8 is a schematic diagram of yet another determination of a second time domain unit provided by an embodiment of the present application;

fig. 9 is a flow chart of another transmission resource determining method provided in the present application;

Fig. 10 is a flowchart of yet another transmission resource determining method according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a first user device provided in an embodiment of the present application;

fig. 12 is a schematic structural diagram of another first user equipment provided in an embodiment of the present application;

fig. 13 shows a schematic structural diagram of a communication chip provided in the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Before introducing the transmission resource determining method provided by the application, first, a simple description is made on the SL resource and the resource pool:

the SL resource pool corresponds to a user equipment with the SL resource pool as a resource usage range, for example, the SL resource pool may be configured in a base station, and user equipment in a cell corresponding to the base station may be used as user equipment with the SL resource pool as a resource usage range. The SL resources include time domain resources and frequency domain resources, the time domain resources may be granularity of time domain units, and the frequency domain resources may be granularity of frequency domain units. The time domain unit may be a slot (slot) and the frequency domain unit may be a subchannel (sub-channel). One slot may correspond to a plurality of symbols (symbols) and one subchannel may correspond to a plurality of subcarriers (subcarriers). The subcarrier corresponding to one symbol is one Resource Element (RE), and 12 subcarriers corresponding to each symbol in one slot form one Resource Block (RB). One sub-channel may contain a plurality of resource blocks, and specifically, the number may be configured. When the user equipment selects the resources, the number of the needed resource elements can be determined according to the size of the data packet and the data quantity borne by each resource element, so as to determine the number of the needed resource blocks, and then the number of the sub-channels needed to be occupied is determined according to the number of the resource blocks contained in each sub-channel.

Referring to fig. 1, fig. 1 is a schematic diagram of an SL resource pool provided in the embodiment of the present application, where, as shown in fig. 1, a time domain unit in the SL resource pool is a time slot, and a frequency domain unit is a subchannel, and a hatched block in fig. 1 indicates that a certain user equipment occupies the part of SL resource, that is, the user equipment may send data through a frequency domain resource of a frequency domain unit 1-3 at a time corresponding to the time domain unit 1. After the time corresponding to the time domain unit 1 has elapsed, the user equipment releases the frequency domain resource of the frequency domain unit 1-3, and further other user equipment can occupy the frequency domain resource of the frequency domain unit 1-3 to perform data transmission.

In the configuration of the SL resource pool, the SL resource pool can be configured into a mode for supporting periodical reserved resources, and then the user equipment can declare to occupy a certain frequency domain resource periodically in a certain period in the process of using the SL resource; it may also be configured as a module that does not support periodic reservation of resources. The transmission resource determining method provided in the embodiment can be applied to a configuration mode in which the SL resource pool is used as a reserved resource supporting periodicity. In particular, the method can be used in a scenario of determining SL resources when a secondary connection is established between user equipments in NR (new radio) in this mode.

Referring next to fig. 2, fig. 2 is a schematic diagram of an architecture of a transmission resource determining system according to an embodiment of the present application, where, as shown in fig. 2, the system may include a resource pool configuration device 001 and at least one user device, and in fig. 2, user device 002, user device 003, and user device 004 are shown by way of example, and the resource pool configuration device 001 may be a base station or other device, and the user device may also be referred to as an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless network device, a user agent, a gateway device, or a user device. The user device may be a cellular telephone, a cordless telephone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless localloop, WLL) station, a personal digital assistant (personal digital assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other device connected to a wireless modem, an in-vehicle device, a wearable device or internet of things, a user device in a vehicle network, and any form of user device in a future network, etc. The resource pool configuration device and the user equipment can establish connection based on the uplink and the downlink, and the user equipment can establish connection based on the auxiliary link. The user equipment can acquire the related information of the configured resource pool from the resource pool configuration equipment 001, and can perceive the occupation condition of other user equipment on the resources. The transmission resource determining method provided by the embodiment of the application can be implemented based on the system architecture shown in fig. 2.

Next, description about (pre) setting related to the transmission resource determining method in the embodiment of the present application includes two cases of configuration and pre-configuration, where the configuration may be immediate configuration, for example, immediate configuration or modification of relevant parameters in the first user equipment by equipment such as a base station, and the pre-configuration may be configuration including writing parameters into a chip or a circuit in advance. Referring to fig. 3, fig. 3 is a flowchart of a transmission resource determining method according to an embodiment of the present application, as shown in the drawing, the method includes steps S301 to S303.

S301, a first user device acquires first data to be transmitted, and determines a first candidate time domain unit in the resource selection window according to first resource occupation information under the condition that the resource selection triggering condition for the first data is determined to be met.

The first data to be sent, which is acquired by the first user equipment, may be data generated by the first user equipment, or may be data sent by other devices forwarded by the first user equipment. After the first user equipment acquires the first data to be sent, judging whether a resource selection triggering condition aiming at the first data is met, acquiring first resource occupation information under the condition that the resource selection triggering condition is met, and determining a first candidate time domain unit in a resource selection window according to the first resource occupation information.

The resource selection window is a time window including a plurality of time domain units for transmitting data, and the first user equipment needs to transmit the first data within the resource selection window. The resource selection window is typically a time window within a specified time period, and may be a time window from time n+t1 to time n+t2, provided that the first user equipment determines at time n that the resource selection trigger condition for the first data is met. Wherein T1 is generally in the range of (0, T in NR _proc,1 ]Within the range T _proc,1 Is a fixed value set according to the time of the user equipment for selecting the resource and the processing time for packing the first data before transmission. T2 is generally found in [ T2min, remainingPDB (packet delay budget )]Within a range of (2). Different priorities may be pre-divided for the first data, and a T2min set containing different T2min may be (pre) set, e.g. 1-8 priorities may be divided, and T2min contained in the T2min set may be 1ms, 5ms, 10ms and 20ms. And further, establishing corresponding relations between different priorities and different T2min, and further determining corresponding T2min from the T2min set according to the priority of the first data. And the remaining PDB may be determined according to the latency requirement of the first data. Referring to fig. 4, fig. 4 is a schematic diagram of a time window for selecting resources provided in the embodiment of the present application, for clarity of view, fig. 4 omits a grid representing a time domain unit and a frequency domain unit in a coordinate axis as shown in fig. 1, and in fact, there still exists a corresponding time domain unit or frequency domain unit in the time domain and the frequency domain, as shown in fig. 4, n is a time for triggering resource selection, and the selection window is a corresponding resource selection window.

The determining whether the resource selection triggering condition for the first data is met may be performed in several ways, for example, first determining whether there is a reserved time domain unit for the first user equipment in the time domain units after receiving the first data, and if not, determining that the resource selection triggering condition for the first data is met. Optionally, in the time domain unit after the first data is received, if there is a reserved time domain unit of the first user equipment, it may be further determined whether the reserved time domain unit after the first data is received exceeds a time delay requirement of the first data, if not, the reserved time domain unit may be used to transmit the first data, and if exceeding, it is determined that a resource selection triggering condition for the first data is met. Optionally, in the case that a reserved time domain unit of the first user equipment exists in the time domain unit after the first data is received, it may be further determined whether the first terminal equipment has exceeded a specified time period, and the time domain unit reserved for the first terminal equipment is not used for data transmission, if yes, it is determined that a resource selection triggering condition for the first data is met, otherwise, the reserved time domain unit may be used for transmitting the first data, where the specified time period may be the longest reservation period, for example 1000ms. Optionally, in the case that there is a reserved time domain unit of the first user equipment in the time domain unit after the first data is received, it may be further determined whether there are more than a specified number of consecutive time domain units that are not used in the time domain unit reserved for the first user equipment, if yes, it is determined that the resource selection triggering condition for the first data is met, otherwise, the reserved time domain unit may be used to perform transmission of the first data, where the specified number may be a (pre) configured number, for example, the value may be any integer from 1 to 9. The above optional modes may be selected from one or more of them, or other judging modes may be selected, which is not limited herein.

The first resource occupancy information is resource occupancy information received by the first user equipment within a resource awareness window. The resource sensing window is a time window of a first preset duration before the first user equipment determines that the resource selection triggering condition for the first data is met. The resource awareness window may be from time n-T0 to time n-T, provided that the first user equipment determines at time n that the resource selection trigger condition for the first data is met _proc,0 Time window between moments. For example, T0 may be (pre) configured 1000+ [100 ] for a SL resource pool where reserved resources may be made]ms, i.e. 1100ms, where [100 ]]ms may be other values. T (T) _proc,0 May be a fixed value set according to the user equipment processing the data related to the perceived occupancy of the resource. As shown in fig. 4, the sending window in fig. 4 is a corresponding resource sensing window.

In an optional implementation manner, the first resource occupation information may include information that the first user equipment perceives that other user equipment periodically occupies a certain frequency domain unit in the resource perceiving window, and the first occupation information includes a period for periodically occupying. In one implementation, the first ue determines periodic time domain units occupied by other ues in the resource selection window according to the first resource occupation information, determines whether remaining time domain units can be used for transmitting the first data after removing the frequency domain units occupied by other ues in the time domain units, and if so, determines the first time domain units as first candidate time domain units. The first ue may then select, according to the first candidate time domain unit and the remaining frequency domain units corresponding to the first candidate time domain unit and available for transmitting the first data, a resource for transmitting the first data, which is specifically described in S303.

For example, referring to fig. 5, fig. 5 is a schematic diagram of determining a first candidate time domain unit according to the embodiment of the present application, as shown in fig. 5, a time domain unit 2 in a resource sensing window of a first user equipment senses information that UE1 periodically occupies a frequency domain unit 4, where a period of periodic occupation of UE1 is k1, that is, when time domain unit 2 is taken as a starting point, and k1 is taken as a time domain period, occupation or reservation occupation is performed on the frequency domain unit 4 corresponding to time domain unit 3 and time domain unit 4. The time domain unit 4 falls in a resource selection window of the first user equipment, and according to the occupation information of other user equipment on a certain frequency domain unit contained in the first resource occupation information, whether the frequency domain unit occupied by other user equipment in the time domain unit 4 can be used for transmitting first data or not can be judged, if so, the time domain unit 4 is used as a first candidate time domain unit, meanwhile, all frequency domain units corresponding to the time domain unit 4 are recorded, and after the frequency domain unit 4 occupied by the UE1 is removed, the remaining frequency domain resources which can be used for transmitting the first data are removed; otherwise, all frequency domain resources in the time domain unit 4 are excluded (i.e. the time domain unit 4 is entirely excluded).

Further optionally, in the process of removing the time domain unit according to the perceived information of periodic occupation of the resource by a certain user equipment, the reference signal received power (Reference Signal Receiving Power, RSRP) may be measured, so as to determine whether the perceived transmission power of the user equipment is large enough or not, and whether the first user equipment is interfered, if so, the time domain unit occupied by the corresponding reservation is removed, otherwise, the removal is not needed.

S302, the first user equipment determines a second time domain unit uniquely corresponding to each reservation period in the reservation period set in the resource selection window according to the first time domain unit.

The first time domain unit is a time domain unit of the first user equipment transmitting data in the resource sensing window, and may also be referred to as a half duplex time domain unit of the first user equipment in the resource sensing window. The reserved period set is all possible data transmission periods configured for data transmission for the user equipment taking the first resource pool as the resource using range, and comprises a plurality of reserved periods with unequal values, and each reserved period corresponds to one data transmission period. Wherein, the value of the reservation period in the reservation period set in NR can be any integer of 0, 1-99ms or any integer of 100-1000 ms. In one alternative, the number of reservation periods in the set of reservation periods is 16.

The time interval between the second time domain unit and the first time domain unit is an integer multiple of a reserved period corresponding to the second time domain unit.

In an alternative implementation manner, for any one of the reserved periods in the reserved period set, the reserved period is denoted as a fourth reserved period, in the process of determining the second time domain unit corresponding to the fourth reserved period according to the first time domain unit, the first time domain unit may be taken as a starting point, the duration of one fourth reserved period passes, the corresponding time domain unit is a fourth time domain unit, if the position corresponding to the first time domain unit in the time domain is denoted as z, the fourth reserved period is denoted as k, and y represents the position corresponding to the fourth time domain unit in the time domain, then y may be determined by the formula y=z+k. If the fourth time domain unit is within the resource selection window, the fourth time domain unit may be determined to be a second time domain unit corresponding to the fourth reservation period. Referring to fig. 6, fig. 6 is a schematic diagram of determining a second time domain unit according to the embodiment of the present application, as shown in fig. 6, if a certain fourth reserved period is k2, then the time domain unit obtained by taking the first time domain unit as a starting point and passing through a period of k2 is a time domain unit 5, and the time domain unit 5 falls within a resource selection window, so that the time domain unit 5 is the second time domain unit corresponding to the fourth reserved period of k 2.

In another alternative implementation manner, for any one of the reservation periods, which is referred to as a fifth reservation period, in the process of determining the second time domain unit corresponding to the fifth reservation period according to the first time domain unit, the first time domain unit may be taken as a starting point, and after the duration of one fifth reservation period passes, the corresponding time domain unit is the fifth time domain unit, which is divided into the following three cases: (1) If the fifth time domain unit is between the resource sensing window and the resource selecting window, the fifth time domain unit can be determined to be a pointer time domain unit, the pointer time domain unit is judged to be a starting point, the position of a sixth time domain unit corresponding to the time duration of a fifth reservation period and the position of the resource selecting window are judged, and if the sixth time domain unit is in the resource selecting window, the first user equipment determines the sixth time domain unit to be a second time domain unit corresponding to the fifth reservation period; (2) If the sixth time domain unit is between the resource sensing window and the resource selecting window, the sixth time domain unit is redetermined to be a pointer time domain unit, and returns to the time domain position of the corresponding sixth time domain unit and the resource selecting window after the time length of a fifth reservation period by taking the execution judgment pointer unit as a starting point; (3) If the sixth time domain unit is behind the resource sensing window, it is determined that a second time domain unit uniquely corresponding to the fifth reservation period does not exist in the resource selection window.

For example, referring to fig. 7, fig. 7 is a schematic diagram of another determination of a second time domain unit provided in the embodiment of the present application, as shown in fig. 7, if a fifth reservation period is k3, a time domain unit corresponding to a duration of k3 is taken as a time domain unit 6, the time domain unit 6 falls between a resource sensing window and a resource selecting window, the time domain unit 6 is determined as a pointer time domain unit, a time domain unit corresponding to a duration of k3 is taken as a time domain unit 7 from the time domain unit 6, the time domain unit 7 is in the resource selecting window, and the time domain unit 7 is determined as a second time domain unit corresponding to a sixth time domain unit of k 3.

In still another alternative implementation manner, for any one of the reservation periods, which is referred to as a sixth reservation period, in the process of determining, according to the first time domain unit, a second time domain unit corresponding to the sixth reservation period, the first time domain unit may be taken as a starting point, after a duration of one sixth reservation period passes, the corresponding time domain unit is a seventh time domain unit, and if the seventh time domain unit falls within the resource sensing window, if the seventh time domain unit is a half duplex time domain unit of the first user equipment, the first user equipment may necessarily sense whether other user equipment performs resource occupation or resource reservation occupation in the seventh time domain unit; if the seventh time domain unit is a half duplex time domain unit of the first user equipment, it may be further determined whether the time domain unit corresponding to the duration of the sixth reservation period is within the resource sensing window with the seventh time domain unit as a starting point, if so, whether the corresponding time domain unit is a half duplex time domain unit of the first user equipment, and so on, until the time domain unit corresponding to the duration of the sixth reservation period falls within the resource selection window or after the resource selection window, or until the time domain unit corresponding to the duration of the fourth reservation period is not a half duplex time domain unit of the first user equipment within the resource sensing window, and it is determined that the sixth reservation period does not have a unique corresponding second time domain period within the resource selection window.

For example, referring to fig. 8, fig. 8 is a schematic diagram of determining a second time domain unit according to another embodiment of the present application, as shown in fig. 8, if a certain sixth reserved period is k4, then, with the first time domain unit as a starting point, a time domain unit corresponding to a duration of k4 is taken as a time domain unit 8, the time domain unit 8 falls within a resource sensing window, then, it is determined whether the time domain unit 8 is a half duplex time domain unit of the first user equipment, if yes, with the time domain unit 8 as the starting point, a time domain unit corresponding to a duration of k4 is taken as a time domain unit 9, and if the time domain unit 9 is within a resource selection window, the time domain unit 9 is determined as a second time domain unit corresponding to the sixth reserved period of k 4; if not, stopping determining the second time domain unit corresponding to the fourth reservation period k4, and determining that the sixth reservation period k4 does not have the unique corresponding second time domain period in the resource selection window, wherein the first user equipment can accurately determine whether to exclude the time domain unit 7 according to the first resource occupation information perceived by the first user equipment at the time corresponding to the time domain unit 6.

S303, the first user equipment excludes the second time domain unit from the first candidate time domain units, and determines a target time domain unit for transmitting the first data from the first candidate time domain units remaining after the exclusion.

The first ue may determine the target time domain unit from the first candidate time domain units remaining after excluding the second time domain units corresponding to all the reservation periods in the reservation period set. After the second time domain unit is excluded, the remaining first candidate time domain units include time domain units that are not reserved by other user equipment (i.e., the entire frequency domain unit of the time domain unit may be used for transmitting the first data), and also include time domain units that occupy a portion of the frequency domain unit by other user equipment. The physical layer of the first user equipment may acquire the number L of frequency domain units required for transmitting the first data, that is, the continuous L frequency domain units are required to transmit the first data, and each continuous L frequency domain unit is recorded as a first continuous frequency domain unit; and determining the number N of the first continuous frequency domain units in the frequency domain units corresponding to the first candidate time domain units, selecting H first continuous frequency domain units from the N first continuous frequency domain units when the number N is larger than the preset number H, reporting relevant information (including corresponding frequency domain unit information and time domain unit information) of the H first continuous frequency domain units to a high layer (a data link layer or a network layer), and randomly determining one first continuous frequency domain unit for transmitting first data from the H first continuous frequency domain units by the high layer, wherein the time domain unit corresponding to the randomly determined first continuous frequency domain unit is the target time domain unit in S303. The preset number H may be determined by a total number M of the first continuous frequency domain units included in the resource selection window, and a second threshold, which may be 20%.

Because the first user equipment cannot sense the occupation condition of other user equipment on resources in the time corresponding to the first time domain unit due to the half duplex working mechanism, the condition that other user equipment possibly occupies resources in the first time domain unit is eliminated through the determination of the second time domain unit, and resource conflict among other resource equipment is avoided.

In an optional implementation manner, in the process of removing the second time domain units corresponding to the reserved period in the reserved period set, whether the ratio of the number of the first candidate time domain units remaining after the resource selection window is removed to the total number of the time domain units contained in the resource selection window is greater than or equal to a first threshold value, for example, the first threshold value may be set to 20%, and if yes, the second time domain units in other reserved periods are continuously removed, and if not, the second time domain units which are removed last time are recovered to be the first candidate time domain units.

In a specific implementation of this alternative manner, the first user equipment may determine any one of the reserved periods in the reserved period set as a first reserved period, and exclude a second time domain unit corresponding to the first reserved period from the first candidate time domain unit; the first user equipment judges whether the ratio of the number of the first candidate time domain units remained after the current elimination to the total number of the time domain units in the resource selection window is larger than or equal to a first threshold value; if the judgment result is yes, the first user equipment redetermines the reserved periods except the first reserved period in the reserved period set into the first reserved period, and returns to execute the second time domain unit corresponding to the first reserved period to be removed from the first candidate time domain unit; and under the condition that the judgment result is negative, the first user equipment stops excluding the second time domain unit from the first candidate time domain unit, and restores the second time domain unit which is excluded this time to the first candidate time domain unit.

By setting the first threshold, the number of the candidate time domain units, i.e. the number of the first candidate time domain units, which can be used by the first user equipment for transmitting the first data, is not too low, so that the situation that no first candidate time domain units remain for the first user equipment to transmit the first data after the second time domain units are excluded is avoided.

Referring to fig. 9, fig. 9 is a schematic flow chart of another transmission resource determining method provided in the present application, and as shown in fig. 9, the method may include steps S901 to S909.

S901, a first user device acquires first data to be transmitted, and determines a first candidate time domain unit in the resource selection window according to first resource occupation information under the condition that the resource selection triggering condition for the first data is determined to be met.

The resource selection window is a time window including a plurality of time domain units for transmitting data; the first resource occupation information is the resource occupation information received by the first user equipment in a resource sensing window; the resource-aware window is a time window of a first preset duration prior to determining a moment at which a resource selection trigger condition for the first data is met.

S902, the first user equipment determines, according to the first time domain unit, a second time domain unit uniquely corresponding to each reservation period in the reservation period set within the resource selection window.

The first time domain unit is a time domain unit for the first user equipment to send data in the resource sensing window; the reserved period set comprises a plurality of reserved periods with unequal values, and the reserved periods are preset data transmission periods; the time interval between the second time domain unit and the first time domain unit is an integer multiple of a reserved period corresponding to the second time domain unit.

The specific implementation manner of step S901 to step S902 may refer to the specific implementation manner of step S301 to step S302 in the embodiment corresponding to fig. 3, and will not be described herein again.

S903, the first user equipment determines the smallest reservation period in the reservation period set as the first reservation period.

And S904, the first user equipment excludes the second time domain unit corresponding to the first reservation period from the first candidate time domain units.

Here, first, a plurality of reservation periods with unequal values contained in the reservation period set are determined as a first reservation period, and a second time domain unit corresponding to the first reservation period is excluded from the first candidate time domain units. For example, the reservation period set includes 5ms, 10ms, 20ms, 30ms, 40ms, and other 11 reservation periods with unequal values, the smallest reservation period is 5ms, and after step S902, the 5ms is determined as the first reservation period.

S905, the first user equipment judges whether the ratio of the number of the first candidate time domain units remained after the current elimination to the total number of the time domain units in the resource selection window is greater than or equal to a first threshold value.

If the determination result is yes, S906 is executed, and if the determination result is no, S908 is executed.

S906, the first user equipment determines that a reservation period greater than the first reservation period exists in the reservation period.

If yes, S907 is executed, and if no, S909 is executed.

For example, the total number of time domain units included in the resource selection window is 10, the first candidate time domain units in the resource selection window is 5, the first threshold is 20%, after determining the minimum 5ms as the first reservation period, the second time domain units corresponding to 5ms are excluded, the number of the remaining first candidate time domain units after the exclusion is 4, the ratio of the total number of the time domain units included in the resource selection window is 40%, the ratio is greater than the first threshold, and other reservation periods greater than 5ms are also included in the reserved resource set, so S907 is continued.

S907, the first user equipment redefines the minimum reservation period larger than the first reservation period in the reservation period set as the first reservation period.

After S907, the process returns to step S904.

If the minimum reservation period is 10ms in the reservation period set greater than the reservation period of 5ms, the 10ms is redetermined as the first reservation period, and step S904 is executed again, and the elimination of the second time domain unit corresponding to the reservation period of 10ms is executed.

In this example, after the two cycles of steps S904 to S907 are continued, the second time domain units corresponding to the two reservation periods of 10ms and 20ms are removed from the first candidate time domain units, at this time, the number of the first candidate time domain units is 2, after the third cycle is executed S904, 30ms is determined as the first reservation period, the second candidate time domain units corresponding to 30ms are removed, at this time, only one remaining first candidate time domain units after the present removal are left and less than 20% of the first threshold value, step S908 is executed, the removal of the second time domain units is stopped, and the second reservation period corresponding to 30ms is restored to the first candidate time domain units.

S908, the first ue stops excluding the second time domain unit from the first candidate time domain unit, and restores the second time domain unit that is excluded this time to the first candidate time domain unit.

S909, the first user equipment determines a target time domain unit for transmitting the first data from the first candidate time domain units remaining after the exclusion.

The specific implementation manner of step S909 may refer to the specific implementation manner of S303 in the corresponding embodiment of fig. 3, which is not described herein.

In the embodiment of the application, the first user equipment excludes the resources occupied by other user equipment according to the perceived first resource occupation information, and the accuracy of the first user equipment in selecting the resources is improved by excluding the corresponding second time domain unit of the reserved period in the resource selection window and the resources in two aspects. In the process of removing the second time domain units, the situation that the first candidate time domain units are too few or do not exist in number, so that the first user equipment does not have resources to send the first data is avoided, meanwhile, due to the fact that the data transmission period corresponding to the emergency service or the service with higher priority is usually smaller, in the process of removing the second time domain units corresponding to the reservation periods in each reservation period set, traversal is conducted according to the sequence from smaller reservation periods to larger reservation periods, the problem that resources occupied by the first user equipment to send the first data are prevented from being in conflict with resources occupied by the emergency service or the service with higher priority is avoided, and the rationality of determining transmission resources is improved.

Referring to fig. 10, fig. 10 is a flowchart of still another transmission resource determining method according to an embodiment of the present application, as shown in fig. 10, the method may include steps S1001 to S1008.

S1001, a first user device acquires first data to be sent.

S1002, in the case where it is determined that the resource selection triggering condition for the first data is satisfied, the first user equipment determines whether there is a resource auxiliary management device within a preset distance range.

If yes, go to step S1003 to step S1005; if not, steps S1006 to S1008 are performed.

Wherein the resource selection window is a time window comprising a plurality of time domain units for transmitting data. The resource auxiliary management device can receive and store the occupation information of each user device on the SL resources in real time. The resource auxiliary management device may be a Road Side Unit (RSU), and specifically may be a device installed on a street lamp, an electronic toll collection system (Electronic Toll Collection, ETC) device, a traffic signal lamp, or the like, which has a function of receiving, in real time, information about the occupation of the SL resource by the user device.

S1003, the first user equipment sends an auxiliary information acquisition request for the first time domain unit to the resource auxiliary management device.

The auxiliary information acquisition request is used by the resource auxiliary management device to acquire second resource occupation information received in a time corresponding to a first time domain unit from stored occupation information of SL resources by each user device, and send the second resource occupation information corresponding to the first time domain unit to the first user device. The second resource occupation information is occupation information of other user equipment in the same resource use range with the first user equipment in the time corresponding to the first time domain unit.

S1004, the first user equipment acquires first resource occupation information, and determines a second candidate time domain unit corresponding to the resource selection window according to the first resource occupation information and the second resource occupation information.

The first resource occupation information is resource occupation information received by the first user equipment in a resource sensing window. The resource-aware window is a time window of a first preset duration prior to determining a moment at which a resource selection trigger condition for the first data is met.

Optionally, the second resource occupation information includes occupation information of a second user equipment pair of time domain units taking the first time domain unit as a starting point and taking the second reserved period as a period, and the third user equipment pair of resource occupation information of at least one second frequency domain unit corresponding to the eighth time domain unit and taking the third reserved period as a period, wherein the second frequency domain unit corresponds to the eighth time domain unit. The second user equipment and the third user equipment are user equipment within the same resource use range as the first user equipment. The eighth time domain unit is any time domain unit other than the first time domain unit within the resource sensing window.

A first alternative way of determining the second candidate time domain unit is: determining a corresponding time domain unit of the second user equipment in a resource selection window according to the first time domain unit and the second reservation period; determining a time domain unit corresponding to the third user equipment in the resource selection window according to the eighth time domain unit, the second frequency domain unit and the third reservation period, and judging whether the time domain unit corresponding to the third user equipment in the resource selection window meets the exclusion condition; if the judgment result is yes, removing a time domain unit corresponding to the second user equipment in the resource selection window and a time domain unit corresponding to the third user equipment in the resource selection window from the time domain units in the resource selection window to obtain a second candidate time domain unit, if the judgment result is no, removing a time domain unit corresponding to the second user equipment in the resource selection window (not removing a time domain unit corresponding to the third user equipment in the resource selection window) from the time domain units in the resource selection window to obtain a second candidate time domain unit, recording the remaining frequency domain units which can be used for transmitting the first data in the time domain units corresponding to the third user equipment in the resource selection window, and recording the frequency domain units which can be used for transmitting the first data and are subsequently used for selecting available resources reported by an orientation high layer by a physical layer. Here, one way to determine whether the time domain unit corresponding to the third user equipment in the resource selection window meets the exclusion condition may be: and removing the second frequency domain unit from all frequency domain units corresponding to the corresponding time domain units in the resource selection window by the third user equipment, if the rest frequency domain units are not matched with the frequency domain unit requirement information, determining that the exclusion condition is met, otherwise, not meeting the exclusion condition.

The method for judging whether the remaining frequency domain units are matched with the frequency domain unit requirement information is quite many, for example, assume that a time domain unit corresponding to the third user equipment in the resource selection window is a time domain unit 8, all frequency domain units corresponding to the time domain unit 8 are 5 subshannels, and the time domain units are subshannel 1, subshannel 2, subshannel 3 subshannel 4 and subshannel 5 respectively according to adjacent sequences. In this case, if the second frequency domain units are subshannel 2 and subshannel 3, and the frequency domain unit requirement information is that 4 subshannels are required to transmit the first data, after the second frequency domain units are removed from the subshannel 2 and the subshannel 3, only 3 subshannels are left in the time domain unit 8, so that the first data is not transmitted, and therefore, it is determined that the remaining frequency domain units are not matched with the frequency domain unit requirement information. In another case, if the second frequency domain unit is the sub-channel 3 and the frequency domain unit requirement information is that 3 sub-channels are required to transmit the first data, after the second frequency domain unit is removed, although 4 sub-channels are still left in the time domain unit 8, since 3 sub-channels adjacent to each other do not exist in the 4 sub-channels, it is determined that the remaining frequency domain units are not matched with the frequency domain unit requirement information. The specific determination method is not limited herein.

Optionally, the second resource occupation information includes resource occupation information of the second user equipment with a second reservation period as a period for at least one first frequency domain unit corresponding to the first time domain unit with the first time domain unit as a starting point; the second user equipment is user equipment within the same resource use range as the first user equipment.

A second alternative way of determining the second candidate time domain unit is: the first user equipment acquires frequency domain unit requirement information of the first data; the first user equipment determines the number of first available frequency domain units corresponding to a third time domain unit according to the resource occupation information of the first frequency domain unit in the second resource occupation information, wherein the third time domain unit is determined according to the first time domain unit and the second reservation period, and the second user equipment corresponds to the time domain unit in the resource selection window; and under the condition that the number of the first available frequency domain units is matched with the frequency domain unit demand information of the first data, the first user equipment does not exclude a third time domain unit, determines the third time domain unit as a second candidate time domain unit, records the remaining frequency domain units which can be used for transmitting the first data in the corresponding time domain units of the second user equipment in the resource selection window, and the recorded frequency domain units which can be used for transmitting the first data are used for selecting available resources reported by an orientation high layer by a physical layer. Further optionally, according to the eighth time domain unit, the second frequency domain unit and the third reserved period, determining a time domain unit corresponding to the third user equipment in the resource selection window, and judging whether the time domain unit corresponding to the third user equipment in the resource selection window meets an exclusion condition, if so, excluding the time domain unit corresponding to the third user equipment in the resource selection window, if not, eliminating the time domain unit corresponding to the third user equipment in the resource selection window, and recording the remaining frequency domain units which can be used for transmitting the first data in the time domain unit corresponding to the third user equipment in the resource selection window; finally, the remaining time domain units within the resource selection window are determined to be second candidate time domain units. The specific way of determining whether the corresponding time domain unit of the third user equipment in the resource selection window meets the exclusion condition may refer to the first optional way of determining the second candidate time domain unit, which is not described herein.

S1005, the first user equipment determines a target time domain unit for transmitting the first data from the second candidate time domain units.

In one implementation, the second candidate time domain unit may be determined by a physical layer of the first ue, and then reported to a higher layer of the first ue, where the higher layer randomly determines the target time domain unit from the second candidate time domain unit. Wherein the second candidate time domain unit includes a time domain unit that is not reserved by other user equipment (i.e., the entire frequency domain unit of the time domain unit may be used for transmitting the first data), and further includes a time domain unit that is occupied by the first user equipment or the second user equipment by a portion of the frequency domain unit. The physical layer of the first user equipment may acquire the number L of frequency domain units required for transmitting the first data, that is, the continuous L frequency domain units are required to transmit the first data, and each continuous L frequency domain unit is recorded as a first continuous frequency domain unit; and determining the number Q of first continuous frequency domain units in the frequency domain units corresponding to the second candidate time domain units, selecting W first continuous frequency domain units from the Q first continuous frequency domain units under the condition that the Q is larger than the preset number W, reporting related information (comprising corresponding frequency domain unit information and time domain unit information) of the W first continuous frequency domain units to a high layer (a data link layer or a network layer), and randomly determining one first continuous frequency domain unit for transmitting first data from the W first continuous frequency domain units by the high layer, wherein the time domain unit corresponding to the randomly determined first continuous frequency domain unit is the target time domain unit in S1005. The preset number W may be determined by a total number R of the first continuous frequency domain units included in the resource selection window, and a second threshold, which may be 20%.

S1006, the first user equipment determines a first candidate time domain unit in the resource selection window according to the first resource occupation information.

S1007, the first user equipment determines a second time domain unit uniquely corresponding to each reservation period in the reservation period set in the resource selection window according to the first time domain unit.

And S1008, the first user equipment excludes the second time domain unit from the first candidate time domain units, and determines a target time domain unit for transmitting the first data from the first candidate time domain units remained after the exclusion.

The implementation manner corresponding to steps S1006 to S1008 may refer to the specific implementation manner of steps S301 to S303 in the embodiment corresponding to fig. 3, and will not be described herein.

In the embodiment of the present application, after the first user equipment obtains the first data to be sent, if it is determined that the triggering condition for selecting the resources of the first data is met, judging whether resource auxiliary management equipment exists in a preset distance range, if yes, second resource occupation information sent by the resource auxiliary management equipment and first resource occupation information perceived by the first user equipment in a resource perception window form all resource occupation information in the resource perception window, and further the first user equipment can accurately exclude occupied resources of other user equipment in the resource selection window according to the first resource occupation information and the second resource occupation information, so that accuracy of resource selection of the first user equipment is improved; if not, the resources occupied by other user equipment are eliminated according to the perceived first resource occupation information, and the resources possibly occupied by other user equipment are eliminated through eliminating a corresponding second time domain unit of the reserved period in the resource selection window, so that the rationality of the resource selection of the first user equipment is improved.

Referring to fig. 11, fig. 11 is a schematic structural diagram of a first user equipment provided in an embodiment of the present application, and as shown in fig. 11, the first user equipment 110 may include:

A candidate resource determining module 1101, configured to obtain first data to be sent, and determine a first candidate time domain unit in a resource selection window according to first resource occupation information if it is determined that a resource selection triggering condition for the first data is satisfied; the resource selection window is a time window including a plurality of time domain units for transmitting data; the first resource occupation information is the resource occupation information received by the first user equipment in a resource sensing window; the resource awareness window is a time window of a first preset duration before the moment when the resource selection triggering condition is determined to be met for the first data;

an occupied resource determining module 1102, configured to determine, according to the first time domain unit, a second time domain unit uniquely corresponding to each reservation period in the set of reservation periods within the resource selection window; the first time domain unit is a time domain unit for the first user equipment to send data in the resource sensing window; the reserved period set comprises a plurality of reserved periods with unequal values, and the reserved periods are preset data transmission periods; the time interval between the second time domain unit and the first time domain unit is an integer multiple of a reserved period corresponding to the second time domain unit;

A target resource determining module 1103 is configured to exclude the second time domain unit from the first candidate time domain units, and determine a target time domain unit for transmitting the first data from the first candidate time domain units remaining after the exclusion.

In a specific implementation, the first ue may execute each step in the transmission resource determining method shown in fig. 3, fig. 9 or fig. 10 through each built-in functional module, and specific implementation details may refer to implementation details of each step in the corresponding embodiment of fig. 3, fig. 9 or fig. 10, which are not described herein again.

In this embodiment of the present application, after obtaining first data to be sent by a candidate resource determining module, under a condition that a resource selection triggering condition for the first data is determined to be satisfied, determining, according to first resource occupation information received in a resource sensing window, a first candidate time domain unit in the resource selection window, where the resource selection window is a time window including a plurality of time domain units for sending data, and the resource sensing window is a time window of a first preset duration before a time when a first user equipment determines that the resource selection triggering condition for the first data is satisfied. The method comprises the steps that an occupied resource determining module determines a second time domain unit which is uniquely corresponding to each reservation period in a reservation period set in a resource selection window according to a first time domain unit, wherein the first time domain unit is a time domain unit for transmitting data in a resource sensing window by first user equipment, the reservation period set comprises a plurality of reservation periods with unequal values, the reservation periods are preset data transmission periods, and the time interval between the second time domain unit and the first time domain unit is integral multiple of the reservation period corresponding to the second time domain unit; and the target resource determining module excludes the second time domain unit from the first candidate time domain units, and determines a target data unit for transmitting the first data from the first candidate time domain units remained after the exclusion. The first user equipment excludes resources occupied by other user equipment according to the perceived first resource occupation information, and the accuracy of selecting resources by the first user equipment is improved by excluding the corresponding second time domain unit of the reserved period in the resource selection window and the resources in two aspects.

The first user equipment in the embodiment shown in fig. 11 may be implemented as the first user equipment 120 shown in fig. 12. As shown in fig. 12, fig. 12 is a schematic structural diagram of another first user device provided in an embodiment of the present application, and the computing node device 12 shown in fig. 12 includes: a processor 1201 and a memory 1202.

Processor 1201 may be used for determination of SL resources. For example, steps S301-S303, etc. in the embodiment shown in fig. 3 are implemented.

The memory 1202 is used for storing program codes and data for execution by the first user device, and the processor 1201 may execute the application code stored in the memory 1202 to implement the actions provided by any of the embodiments shown in fig. 3, 9 and 10.

The processor 1201 is communicatively coupled to the memory 1202, for example, via a bus 1203. Bus 1203 may be a PCI bus or an EISA bus, among others. The bus 1203 may be classified into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in fig. 12, but not only one bus or one type of bus.

The computing node device 120 may further comprise a transceiver 1204 for supporting the transmission of information between the first user device 120 and the resource pool configuration device or other user devices involved in the above-described embodiments. For example, step S402 or S403 in the corresponding embodiment of fig. 4 is implemented; for example, step S1003 and the like in the embodiment corresponding to fig. 10 are implemented.

It should be noted that, in practical applications, the first user equipment may include one or more processors, and the structure of the first user equipment 120 is not limited to the embodiment of the present application.

The processor 1201 may be a central processing unit (central processing unit, CPU), general purpose processor, digital signal processor (digital signal processor, DSP), application-specific integrated circuit (application-specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic device, transistor logic device, hardware components, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules, and circuits described in connection with this disclosure. The processor may also be a combination that performs the function of a computation, e.g., a combination comprising one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

The transceiver 1204 may be a communication interface or transceiver circuitry, etc., where the transceiver is generally referred to and in a particular implementation, the transceiver may include multiple interfaces.

The memory 1202 may include volatile memory (RAM), such as random access memory (random access memory); the memory 1202 may also include a nonvolatile memory (non-volatile memory), such as a read-only memory (ROM), a flash memory (flash memory), a hard disk (HDD) or a Solid State Drive (SSD); memory 1202 may also include combinations of the above types of memory.

There is also provided in an embodiment of the present application a computer storage medium, which may be used to store computer software instructions for a first user equipment in the embodiment shown in fig. 12, and which includes a program for executing the program designed for the control node device in the above embodiment. The storage medium includes but is not limited to flash memory, hard disk, solid state disk.

In the embodiment of the present application, a computer program product is further provided, where the computer program product may perform the transmission resource determining method designed for the first user equipment in the embodiment shown in fig. 11 when the computer program product is run by the control node device.

Referring to fig. 13, fig. 13 shows a schematic structural diagram of a communication chip provided in the present application. As shown in fig. 13, the communication chip 130 may include: a processor 1301, and one or more interfaces 1302 coupled to the processor 1301. Wherein:

processor 131 may be used to read and execute computer readable instructions. In a particular implementation, processor 1301 may include primarily a controller, an operator, and registers. The controller is mainly responsible for instruction decoding and sending out control signals for operations corresponding to the instructions. The arithmetic unit is mainly responsible for performing fixed-point or floating-point arithmetic operations, shift operations, logic operations, and the like, and may also perform address operations and conversions. The register is mainly responsible for storing register operands, intermediate operation results and the like temporarily stored in the instruction execution process. In a specific implementation, the hardware architecture of the processor 1301 may be an application specific integrated circuit (application specific integrated circuits, ASIC) architecture, MIPS architecture, ARM architecture, NP architecture, or the like. The processor 1701 may be single-core or multi-core.

The interface 1302 may be used to input data to be processed to the processor 1301, and may output a processing result of the processor 1301 to the outside. For example, interface 1302 may be a general purpose input output (general purpose input output, GPIO) interface that can interface with multiple peripheral devices (e.g., a display (LCD), a camera, a Radio Frequency (RF) module, etc.). The interface 1302 is coupled to the processor 1301 by a bus 1303.

In this application, the processor 1301 may be configured to invoke a program for implementing the transmission resource determining method provided in one or more embodiments of the present application from a memory, and execute instructions included in the program. Interface 1302 may be used to output results of execution by processor 1301. In this application, the interface 132 may be specifically configured to output the resource determination result of the processor 1301. The transmission resource determining method provided in one or more embodiments of the present application may refer to the foregoing embodiments shown in fig. 3, fig. 9 or fig. 10, and will not be described herein.

It should be noted that, the functions corresponding to the processor 1301 and the interface 1302 may be implemented by a hardware design, a software design, or a combination of hardware and software, which is not limited herein.

The terms "first," "second," "third," and "fourth" and the like in the description and in the claims of this application and in the drawings, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

It will be understood by those of ordinary skill in the art that, in various embodiments of the present application, the sequence numbers of the above-described processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Claims

1. A transmission resource determination method, comprising:

the method comprises the steps that first user equipment obtains first data to be sent, and under the condition that a resource selection triggering condition for the first data is determined to be met, a first candidate time domain unit in a resource selection window is determined according to first resource occupation information; the first candidate time domain unit is a periodic time domain unit occupied by other user equipment in the resource selection window, and the frequency domain units corresponding to the first candidate time domain unit are enough to be used for transmitting the first data after the frequency domain units occupied by the other user equipment are removed; the resource selection window is a time window including a plurality of time domain units for transmitting data; the first resource occupation information comprises information of periodic occupation of the frequency domain units by the other user equipment perceived by the first user equipment in a resource perception window; the resource awareness window is a time window of a first preset duration before the moment when the resource selection triggering condition is determined to be met for the first data;

The first user equipment takes a first time domain unit as a starting point, and determines a second time domain unit uniquely corresponding to each reservation period in a resource selection window by combining the duration of each reservation period in a reservation period set; the first time domain unit is a time domain unit for the first user equipment to send data in the resource sensing window; the reserved period set comprises a plurality of reserved periods with unequal values, and the reserved periods are preset data transmission periods; the time interval between the second time domain unit and the first time domain unit is an integer multiple of a reserved period corresponding to the second time domain unit;

2. The method of claim 1, wherein the first user device excluding the second time domain unit from the first candidate time domain unit comprises:

3. The method of claim 2, wherein the first user device determining any one of the set of reservation periods as a first reservation period, and wherein excluding the second time domain unit corresponding to the first reservation period from the first candidate time domain unit comprises:

4. The method of claim 1, wherein prior to determining the first candidate time domain unit within the resource selection window, further comprising:

5. The method of claim 4, wherein the second resource occupancy information includes resource occupancy information of a second user equipment corresponding to the first time domain unit, with respect to at least one first frequency domain unit, and with respect to a second reservation period, with respect to the first time domain unit as a starting point; the second user equipment is user equipment within the same resource use range as the first user equipment;

The first user equipment determines the number of first available frequency domain units corresponding to a third time domain unit according to the resource occupation information of the first frequency domain unit in the second resource occupation information, wherein the third time domain unit is determined according to the first time domain unit and the second reservation period, and the second user equipment corresponds to the time domain unit in the resource selection window;

6. The method of claim 1, wherein the first user device determining, from the first time domain unit, a second time domain unit for each reservation period in the set of reservation periods that uniquely corresponds to within the resource selection window comprises:

7. The method of claim 1, wherein the first user device determining, from the first time domain unit, a second time domain unit for each reservation period in the set of reservation periods that uniquely corresponds to within the resource selection window comprises:

8. A first user device, comprising:

the candidate resource determining module is used for acquiring first data to be transmitted, and determining a first candidate time domain unit in a resource selection window according to first resource occupation information under the condition that the resource selection triggering condition for the first data is determined to be met; the first candidate time domain unit is a periodic time domain unit occupied by other user equipment in the resource selection window, and the frequency domain units corresponding to the first candidate time domain unit are enough to be used for transmitting the first data after the frequency domain units occupied by the other user equipment are removed; the resource selection window is a time window including a plurality of time domain units for transmitting data; the first resource occupation information comprises information of periodic occupation of the frequency domain units by the other user equipment perceived by the first user equipment in a resource perception window; the resource awareness window is a time window of a first preset duration before the moment when the resource selection triggering condition is determined to be met for the first data;

the occupied resource determining module is used for determining a second time domain unit uniquely corresponding to each reservation period in the resource selection window by taking the first time domain unit as a starting point and combining the duration of each reservation period in the reservation period set; the first time domain unit is a time domain unit for the first user equipment to send data in the resource sensing window; the reserved period set comprises a plurality of reserved periods with unequal values, and the reserved periods are preset data transmission periods; the time interval between the second time domain unit and the first time domain unit is an integer multiple of a reserved period corresponding to the second time domain unit;

9. A communication device comprising a processor and a memory;

the memory is configured to store program code and the processor is configured to execute the program code stored in the memory to implement the method of any one of claims 1 to 7.

10. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program, which is executed by a processor to implement the method of any one of claims 1 to 7.