WO2021088033A1

WO2021088033A1 - Method and device for determining resource selection window, electronic device, and readable storage medium

Info

Publication number: WO2021088033A1
Application number: PCT/CN2019/116820
Authority: WO
Inventors: 赵振山; 卢前溪; 林晖闵
Original assignee: Oppo广东移动通信有限公司
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2021-05-14
Also published as: CN114402678A

Abstract

Provided in the present disclosure are a method and device for determining a resource selection window, an electronic device, and a readable storage medium. The method for determining a resource selection window comprises: determining a first moment, the first moment being a moment for resource selection; acquiring a reserved transmission resource of the first moment; and determining a resource selection window of the first moment on the basis of a time-domain position of the reserved transmission resource of the first moment. The present disclosure implements the method for determining, on the basis of a time-domain position of a reserved transmission resource, a resource selection window during resource selection.

Description

Method and device for determining resource selection window, electronic equipment and readable storage medium

Technical field

The present disclosure relates to the field of communication technologies, and in particular, to a method and device for determining a resource selection window, electronic equipment, and a readable storage medium.

Background technique

When a user terminal (User Equipment, UE) transmits a signal, it needs to select a resource for the signal transmission, but if the resource selected by the user terminal conflicts with the resource selected by other user terminals, the user terminal may need to reselect Resources, and related technologies do not provide a better solution for this.

Summary of the invention

An object of the present disclosure is to be able to determine the resource selection window when selecting resources based on the reserved transmission resources when selecting resources.

According to one aspect of the present disclosure, a method for determining a resource selection window is proposed, which includes: determining a first moment, where the first moment is the moment for resource selection; acquiring the reserved transmission resource at the first moment; The time domain location of the reserved transmission resource at the first moment determines the resource selection window at the first moment.

According to another aspect of the present disclosure, an apparatus for determining a resource selection window is provided, including: a first moment determining module configured to determine the first moment, the first moment being the moment for resource selection; a reserved resource acquisition module, It is configured to obtain the reserved transmission resource at the first moment; the selection window determining module is configured to determine the resource selection window at the first moment according to the time domain position of the reserved transmission resource at the first moment.

According to another aspect of the present disclosure, an electronic device is provided, which includes a storage unit and a processing unit; the storage unit is used to store a program for determining a resource selection window; the processing unit is used to run a program for determining a resource selection window, so When the program for determining the resource selection window is executed, the method for determining the resource selection window described in the above embodiment is executed.

According to another aspect of the present disclosure, a readable storage medium is provided, including: a memory, which stores a program for determining a resource selection window; a processor, which runs a program for determining a resource selection window, and when the program for determining a resource selection window is executed, Run the method for determining the resource selection window as described in the above embodiment.

In the solution of this embodiment, the first moment of resource selection is determined, and the reserved transmission resource at the first moment is acquired. Therefore, this embodiment can determine the resource selection window at the first time according to the time domain position of the reserved transmission resource at the first time.

Description of the drawings

FIG. 1 is a schematic diagram of an embodiment of transmission mode A of the present disclosure;

2 is a schematic diagram of an embodiment of transmission mode B of the present disclosure;

Fig. 3 is a schematic diagram of a resource selection method based on interception in the present disclosure;

Figure 4 is a schematic diagram of resource conflicts in the present disclosure and implementation of chain resource selection or reservation;

FIG. 5 is a flowchart of an embodiment of a method for determining a resource selection window of the present disclosure;

FIG. 6 is a flowchart of an embodiment of the present disclosure based on step S510 of FIG. 5;

FIG. 7 is a flowchart of another embodiment of the present disclosure based on step S510 of FIG. 5;

FIG. 8 is a flowchart of an embodiment of the present disclosure based on step S530 of FIG. 5;

FIG. 9 is a schematic diagram of an embodiment of determining a resource selection window based on the method of FIG. 8 in the present disclosure;

FIG. 10 is a flowchart of another embodiment of the present disclosure based on step S530 of FIG. 5;

FIG. 11 is a flowchart of an embodiment of the present disclosure based on step S534 of FIG. 10;

FIG. 12 is a flowchart of another embodiment of the present disclosure based on step S534 of FIG. 10;

FIG. 13 is a schematic diagram of an embodiment of determining a resource selection window based on the method of FIGS. 11 and 12 in the present disclosure;

FIG. 14 is a schematic diagram of another embodiment of determining a resource selection window based on the method of FIGS. 11 and 12 in the present disclosure;

FIG. 15 is a schematic diagram of another embodiment of determining a resource selection window based on the method of FIGS. 11 and 12 in the present disclosure;

FIG. 16 is a schematic diagram of still another embodiment of determining a resource selection window based on the method of FIGS. 11 and 12 in the present disclosure;

FIG. 17 is a flowchart of another embodiment of the present disclosure based on step S530 of FIG. 5;

FIG. 18 is a flowchart of an embodiment of the present disclosure based on step S536 of FIG. 17;

FIG. 19 is a flowchart of another embodiment of the present disclosure based on step S536 of FIG. 17;

FIG. 20 is a schematic diagram of an embodiment of determining a resource selection window based on the method of FIGS. 18 and 19 in the present disclosure;

FIG. 21 is a schematic diagram of another embodiment of determining a resource selection window based on the method of FIGS. 18 and 19 in the present disclosure;

FIG. 22 is a schematic diagram of another embodiment of determining a resource selection window based on the method of FIGS. 18 and 19 in the present disclosure;

FIG. 23 is a schematic diagram of still another embodiment of determining a resource selection window based on the method of FIGS. 18 and 19 in the present disclosure;

FIG. 24 is a structural block diagram of an embodiment of an apparatus for determining a resource selection window of the present disclosure;

FIG. 25 is a schematic structural diagram of an embodiment of an electronic device of the present disclosure.

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms, and should not be construed as being limited to the examples set forth herein; on the contrary, these embodiments are provided so that the present disclosure will be more comprehensive and complete, and the concept of the example embodiments will be fully conveyed To those skilled in the art. The drawings are only schematic illustrations of the present disclosure, and are not necessarily drawn to scale. The same reference numerals in the figures denote the same or similar parts, and thus their repeated description will be omitted.

In addition, the described features, structures, or characteristics can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to give a sufficient understanding of the embodiments of the present disclosure. However, those skilled in the art will realize that the technical solutions of the present disclosure can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. can be used. In other cases, well-known structures, methods, devices, implementations or operations are not shown or described in detail in order to avoid overwhelming people and obscure all aspects of the present disclosure.

In the present disclosure, unless otherwise clearly defined and defined, the terms "connected", "connected" and other terms should be understood in a broad sense. For example, they may be fixedly connected, detachably connected, or integrated; they may be Electrical connection can also be mutual communication; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present disclosure can be understood according to specific circumstances.

In addition, in the description of the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. "And/or" describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can indicate the existence of A alone, B alone, and both A and B. The symbol "/" generally indicates that the associated objects before and after are in an "or" relationship. The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features.

Those skilled in the art can understand that the "user terminal", "terminal", and "terminal equipment" used herein include both wireless signal receiver equipment, which only has equipment with wireless signal receivers without transmitting capability, and also includes receiving equipment. And a device with transmitting hardware, which has a device capable of receiving and transmitting hardware for two-way communication on a two-way communication link. Such equipment may include: cellular or other communication equipment, which has a single line display or a multi-line display or a cellular or other communication equipment without a multi-line display: PCS (personal communication service, personal communication system), which can combine voice and data Processing, fax and/or data communication capabilities; PDA (personal digital assistant), which can include radio frequency receivers, pagers, Internet/Intranet access, web browsers, notebooks, calendars, and/or GPS (global positioning system (Global Positioning System) receiver; a conventional laptop and/or palmtop computer or other device that has and/or includes a radio frequency receiver. The "terminal" and "terminal equipment" used here may be portable, transportable, installed in vehicles (aviation, sea and/or land), or suitable and/or configured to operate locally, and/or In a distributed form, it runs on the earth and/or any other location in space. The "terminal" and "terminal device" used here can also be communication terminals, internet terminals, music/video playback terminals, such as PDA, MID (mobile internet device, mobile Internet device) and/or music/video playback Functional mobile phones can also be smart devices, set-top boxes and other devices.

In LTE (Long Term Evaluation) and the successor system of LET (for example, also known as LTE-A (LTE Advanced), 4G (the 4th generation mobile communication technology), the fourth generation of mobile communication technology ), FRA (Future Radio Access), 5G (the 5th generation mobile communication technology, the fifth generation of mobile communication technology), etc., are studying that user terminals do not pass through the radio base station (eNode, abbreviated as eNB) D2D (Device to Device, terminal to terminal) technology for direct communication.

D2D can reduce the traffic between the user terminal and the base station. Even when the base station is unable to communicate during a disaster, the communication between the user terminals can be carried out.

D2D can be divided into D2D discovery, which is used to find other user terminals that can communicate, and D2D communication, which is used for direct communication between user terminals (also called D2D direct communication, direct communication between terminals, etc.). Hereinafter, when D2D communication, D2D discovery, etc. are not particularly distinguished, it is simply referred to as D2D. In addition, signals sent and received through D2D are called D2D signals.

In addition, in the 3GPP (3rd Generation Partnership Project), the technology of implementing V2X (Vehicle to Everything, vehicles to other devices) by extending D2D functions is being studied. Here, V2X is a part of ITS (Intelligent Transport Systems), V2V that represents the form of communication between vehicles, and represents the vehicle and the road-side unit (RSU) installed on the side of the road. V2I (vehicle to infrastructure) in the form of communication between vehicles, V2N (vehicle to nomadic device, vehicle to mobile terminal), which represents the form of communication between the vehicle and the driver’s mobile terminal, and vehicle-to-mobile terminal The general term for V2P (vehicle to predestrian, vehicle to pedestrian) in the form of communication between mobile terminals of pedestrians.

Device-to-device communication is a sidelink (SL) transmission technology based on D2D. Similar to uplink (UL) and downlink (Downlink, DL), there is also control on the side link Channel and data channel, the former is called Physical Sidelink Control Channel (PSCCH), and the latter is called Physical Sidelink Shared Channel (PSSCH). The PSCCH is used to indicate the time-frequency domain resource location of the PSSCH transmission, the modulation and coding scheme, and the priority of the data carried in the PSSCH. PSSCH is used to carry data. Different from the traditional cellular system in which communication data is received or sent through the base station, the Internet of Vehicles system adopts terminal-to-terminal direct communication, so it has higher spectrum efficiency and lower transmission delay. Two transmission modes are defined in 3GPP: Mode A and Mode B.

FIG. 1 is a schematic diagram of an embodiment of transmission mode A of the present disclosure.

As shown in Fig. 1, the wireless communication system provided in this embodiment may include a base station eNB, a user terminal UE1, and a user terminal UE2. The user terminal UE1 is assumed to represent the transmitting side, and the user terminal UE2 is assumed to represent the receiving side, but both the user terminal UE1 and the user terminal UE2 have two functions: a sending function and a receiving function. Below, in the case where the user terminal UE1 and the user terminal UE2 are not particularly distinguished, they are simply described as "user terminal UE". The user terminal UE1 and the user terminal UE2 respectively have a cellular communication function as a user terminal UE in LTE and a D2D function including signal transmission and reception in the aforementioned channel.

In addition, the user terminal UE1 and the user terminal UE2 have a function of executing the operations described in this embodiment. In addition, the cellular communication function and the existing D2D function may have only a part of the functions (within the range in which the operations described in this embodiment can be performed) or all of the functions.

In addition, each user terminal UE may be any device having a D2D function. For example, each user terminal UE is a terminal owned by a vehicle, a pedestrian, an RSU (UE-type RSU with UE function), and the like.

In addition, the base station eNB has a cellular communication function as a base station eNB in LTE, and functions for enabling communication of the user terminal UE in the present embodiment (resource allocation function, configuration information notification function, etc.). In addition, the base station eNB includes an RSU (an eNB type RSU having the function of an eNB).

In mode A, the transmission resources of the user terminal UE are allocated by the base station, and the user terminal UE transmits data on the side link according to the resources allocated by the base station; the base station can allocate resources for a single transmission to the user terminal UE through DL , It is also possible to allocate semi-static transmission resources for the user terminal UE. In the LTE-V2X system, this mode A is called mode 3.

FIG. 2 is a schematic diagram of an embodiment of transmission mode B of the present disclosure.

As shown in Figure 2, in mode B, the user terminal UE selects a resource from the resource pool for data transmission. Specifically, the user terminal UE may select transmission resources from the resource pool by means of listening, or select transmission resources from the resource pool by means of random selection. In the LTE-V2X system, this mode B is called mode 4.

In this embodiment, the user terminal UE selects unoccupied resources by listening in the listening window, and uses the selected resources to transmit D2D signals. "Snooping", for example, measures the received power (also called received energy or received strength), receives SCI (Sidelink Control Information) sent from other user terminals UE, and decodes it to detect the allocation. SCI and data resource location method, or a combination of these methods. As long as it is not particularly limited, "resources" include time resources (for example, subframes), or time and frequency resources (for example, subchannels). The "D2D signal" can be SCI, data, or a group of SCI and data. In addition, the D2D signal may also be a discovery signal.

In V2X, especially V2V (Vehicle to Vehicle), user terminals such as vehicles exist in high density and move at high speed. Therefore, it is inefficient to allocate resources dynamically, so the idea is to use user terminals Choose the way of resources autonomously.

Among them, the resource selection method for listening is:

In LTE-V2X, when a new data packet arrives at time n (n is a real number greater than or equal to 0), resource selection needs to be performed. The user terminal can select according to the past, for example, 1 second (s, equal to 1000ms, that is, in [ In the range of n-1000, n-1]) the listening result in the listening window, select the resource in the resource selection window of [n+T1,n+T2] milliseconds (ms), where 0<=T1< =T _th1 , where the first time threshold T _th1 can be, for example, 4ms, and the selection of T1 should be less than or equal to the processing delay T _{proc,1 of the} user terminal; T _th2 <=T2<=T _th3 , where the second The time threshold T _th2 may be, for example, 20 ms, and the third time threshold T _th3 may be, for example, 100 ms, and the selection of T2 needs to be within the range of service delay requirements (for example, the maximum transmission delay allowed by the service package). For example, if the service delay requirement is 50ms, then 20ms<=T2<=50ms; if the service delay requirement is 100ms, then 20ms<=T2<=100ms.

When a plurality of user terminals autonomously select (including reselecting) transmission resources, if each user terminal freely selects the resource, conflict of resources occurs, and the user terminal on the receiving side cannot properly receive the signal.

Therefore, an interception-based resource selection method in which resources are intercepted to select unused or occupied resources is proposed. The premise is that a time window (referred to as "listening window" for short) for the user terminal to listen is preset, and the size (period) of the listening window can be set to be the same as the period during which the user terminal semi-permanently sends packets. The user terminal detects unoccupied resources by listening in the listening window. Since it can be judged that the detected resource is also not occupied in the resource selection window, the user terminal regards the resources corresponding to the unoccupied resources as resources capable of transmitting D2D signals in the resource selection window. From these resources Select resources in and start the transmission of D2D signals.

Fig. 3 is a schematic diagram of a resource selection method based on interception in the present disclosure.

As shown in Figure 3, [n,n+100]ms is assumed to be a resource selection window. The box in the listening window to the left of the solid arrow above indicates the resources that have been occupied by other UEs. Because the other UE will periodically reserve the corresponding resources, the box in the resource selection window to the right of the solid arrow is Resources that cannot be selected by the current UE. The box in the listening window on the left of the first dashed arrow below indicates resources not occupied by other UEs. Therefore, the box in the resource selection window on the right of the first dashed arrow is assumed to be the resource selected by the current UE, and the following three The dashed arrow indicates that the corresponding resource is periodically reserved for the current UE. Here, in V2V, it is assumed that when the user terminal autonomously selects resources, instead of selecting resources every time a packet is sent, the resources once selected are used semi-permanently. In the case of transmitting the D2D signal semi-permanently, the user terminal UE only needs to listen when the D2D signal is transmitted first, and there is no need to perform the listening again before periodically transmitting the D2D signal for the second time or later. In addition, the user terminal UE may also listen in the background in advance (that is, listen at the timing (subframe) when the D2D signal is not transmitted in advance), and detect signal conflicts (collision) with other user terminals UE. If possible, reselect resources.

In the embodiment of the present disclosure, the selection window is set after the listening window. The size of the selection window needs to be set at least below the size of the listening window. In addition, when considering the effect of shortening the delay, the size of the selection window is preferably shorter than the size of the listening window. In addition, the selection window may not necessarily be set after the listening window. For example, it is also possible to set the start position of the selection window after a predetermined offset (a few subframes later, etc.) from the end position of the listening window.

In order to support the coexistence of multiple V2X UEs, V2X UE1 needs to consider the resources that V2X UE2 may occupy when selecting transmission resources. A resource includes one or more contiguous subchannels, and a subchannel includes N contiguous physical resource blocks (PRBs), where N is a positive integer greater than or equal to 1, where N is configured by higher-level signaling or Pre-configured.

The transmission resource selection method in the related technology includes the following steps:

The main process for the terminal to select resources in the selection window is as follows:

The current UE regards all available resources in the selection window as a set A, and the current UE excludes the resources in the set A:

1. If the UE currently has no listening result in some subframes in the listening window, the resources of these subframes on the corresponding subframes in the selection window are excluded.

2. If the current UE detects PSCCH in the listening window, measure the RSRP of the scheduled PSSCH, if the measured PSSCH-RSRP is higher than the PSSCH-RSRP threshold, and determine its reserved transmission resources according to the reservation information in the SCI If there is a resource conflict with the data to be sent by the current UE, the current UE excludes the resource from the set A. Among them, the selection of the PSSCH-RSRP threshold is determined by the priority information carried in the detected PSCCH and the priority of the data to be transmitted by the current UE.

3. If the resources in steps 1 and 2 above are excluded from set A, and the number of remaining resources is less than 20% of the total number of resources in the selection window, the current UE will increase the PSSCH-RSRP threshold by 3dB, and repeat the above steps 1-2 , Until the number of remaining resources in set A is greater than 20% of the total number of resources in the selection window.

4. The current UE performs S-RSSI (Sidelink Received Signal Strength Indicator) detection on the remaining resources in set A, and sorts them according to the energy level, and sorts the 20% of the lowest energy (relative to set A). The number of resources in) is placed in set B.

5. The UE currently selects a resource from set B with a medium probability (randomly) for data transmission.

In NR (New Radio or new wireless communication technology) V2X, it is necessary to support automatic driving, so higher requirements are put forward for data interaction between vehicles, such as higher throughput, lower delay, Higher reliability, larger coverage, and more flexible resource allocation.

In NR V2X, high-priority users are supported to preempt resources reserved by low-priority users. If UE1 (low priority) selects the resource and reserves the resource in the sent SCI, but before UE1 uses the resource, it detects that the resource reserved by UE2 (high priority) is the same as that reserved by UE1. If there is a resource conflict in the resource, UE1 will reselect the resource. Specifically, UE1 reselects resources with resource conflicts, and can continue to use resources without conflicts.

In the embodiments of the present disclosure, the priority of the UE may be the priority of the user terminal itself, for example, the priority of ordinary vehicles is low, and the priority of emergency vehicles is high; it may also be the priority of the data currently to be sent by the UE, such as notification generation. The priority of traffic accident grouping is high, and the priority of sending common interactive information is low; or according to a combination of the two, etc. The current UE can learn the priority information of other UEs according to the received SCI sent by other UEs, and can also send its own priority information to other UEs through the SCI.

Figure 4 is a schematic diagram of resource conflicts in the present disclosure and implementation of chain resource selection or reservation.

In the embodiments of the present disclosure, one SCI can indicate a maximum of K transmission resources, and K is a positive integer greater than or equal to 1, for example, K=3 or 4. In the following examples, one SCI can indicate a maximum of 4 transmissions. The resource is taken as an example for illustration, but the present disclosure is not limited to this. In addition to indicating the transmission resources of the side row data currently scheduled by the SCI, the SCI sent by the terminal will also indicate the remaining K-1 transmission resources, indicating that the terminal reserves the K-1 transmission resources.

As shown in Figure 4, suppose that the transmission resources indicated by the SCI sent by UE1 at time n+t1 are located at n+t1, n+t2, n+t3, and n+t4 respectively; among them, the transmission resource at time n+t1 is the SCI The scheduled side row data transmission resources, the transmission resources n+t2, n+t3, and n+t4 represent the transmission resources reserved by the UE1. The transmission resources of UE2 are located at n+t1', n+t2', n+t3', and n+t4' respectively. Among them, the third resource n+t3 of UE1 and the third resource n+t3' of UE2 overlap ( In the illustration, it is partially overlapped, or all overlapped).

In one case, the SCI sent by UE1 at time n+t1 indicates that the transmission resources of n+t2, n+t3, and n+t4 are reserved. If UE1 detects that UE2 has reserved before sending data at time n+t2 n+t2', n+t3', n+t4' transmission resources, and there is a resource conflict between the n+t3' transmission resource of UE2 and the transmission resource n+t3 reserved by UE1, and the priority of UE2 is higher than UE1 UE1 will perform resource reselection. Here, you can only reselect resources that conflict with UE2, such as n+t3 resources, but not conflicting resources, such as n+t2, n+t4 resources, and you can do no resource reselection. selected. Therefore, when the terminal finds that a resource conflict triggers resource reselection, how to determine the resource selection window is a problem that needs to be solved.

Another situation is that when UE1 sends SCI at time n+t1, the indicated transmission resources are located at n+t1, n+t2, n+t3, n+t4. If there is no conflict with other users’ resources, UE1 Resource selection is performed before sending the SCI at time n+t2. For example, the transmission resource of n+t5 is selected so that the SCI sent at time n+t2 can continue to indicate 4 transmission resources. This method of resource selection is called chain resource Select or reserve. Therefore, when the terminal selects or reserves chained resources, how to determine the resource selection window is also a problem that needs to be solved.

In the related art, only how to determine the size of the resource selection window when the terminal selects resources is discussed, but how to determine the resource when the terminal reselects resources due to resource conflicts, or when the terminal selects or reserves chained resources The size of the selection window is still an unresolved issue.

In addition, considering that V2X is a type of D2D, the above-mentioned problem is not limited to V2X, but is a problem that occurs in the entire D2D.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In addition, the embodiment described below is only an example, and the embodiment to which the present disclosure is applied is not limited to the following embodiment. For example, the wireless communication system of the present embodiment assumes a system based on the LTE method, but the present disclosure is not limited to LTE and can be applied to other methods. In addition, in this specification and claims, "LTE" is used broadly, and includes not only the communication method corresponding to 3GPP Release 8 or 9, but also the 3GPP Release 10, 11, 12, 13, or 14 and The next version corresponds to the 5th generation communication method.

In addition, this embodiment mainly targets V2X, but the technology of this embodiment is not limited to V2X, and can be widely applied to all D2D. In addition, the meaning of "D2D" includes V2X.

In addition, "D2D" is used in a broad sense, not only includes the process of sending and receiving D2D signals between user terminals UE, but also includes the process of receiving (monitoring) D2D signals by the base station, and in RRC (Radio Resource Control, Radio Resource Control Protocol) The processing procedure of the user terminal UE sending an uplink signal to the base station eNB in the case of idle (RRC) or in the case of not establishing a connection with the base station eNB.

In V2X, the D2D technology described here can also be used, and the UE in the embodiment of the present disclosure can transmit and receive D2D signals based on this technology.

Fig. 5 is a flowchart of an embodiment of a method for determining a resource selection window of the present disclosure. The method provided by the embodiment of the present disclosure can be executed by any terminal, which is not limited in the present disclosure.

As shown in FIG. 5, the method provided by the embodiment of the present disclosure may include the following steps.

In step S510, a first moment is determined, and the first moment is the moment when resource selection is performed.

It is assumed here that the first moment is marked as n1, and n1 is a real number greater than or equal to 0, which may be the moment of resource selection. Resource selection in the embodiment of the present disclosure may include resource reselection, resource selection, and chained resources Any one or more of the selection or reservation.

In step S520, the reserved transmission resource at the first moment is acquired.

In step S530, the resource selection window at the first time is determined according to the time domain position of the reserved transmission resource at the first time.

According to the method for determining the resource selection window provided by the embodiments of the present disclosure, when the terminal performs resource selection or resource reselection, if there are reserved transmission resources, the time domain position of the reserved transmission resource can be used to determine the resource selection window. Location, on the one hand, by adjusting the transmission resources of the terminal, resource selection or resource reselection, the resource load in the system is balanced, the interference impact is reduced, the reliability of the service is improved, and the balanced distribution of the service in the system is ensured. The reliability of the system; on the other hand, it reduces the collision rate of the system and improves the reliability of transmission.

FIG. 6 is a flowchart of an embodiment of the present disclosure based on step S510 of FIG. 5. As shown in FIG. 6, in the embodiment of the present disclosure, the above step S510 may further include the following steps.

In step S511, a second time n2 is determined, the second time n2 is located before the first time n1, and the second time n2 is the time for resource selection. n2 is a real number greater than or equal to 0 and less than n1.

In step S512, a third time n3 is determined. The third time n3 is the time domain position of the first transmission resource among the K1 transmission resources selected during resource selection at the second time n2, and K1 is greater than Or a positive integer equal to 1. n3 is a real number greater than n2.

In step S513, the first time n1 is determined between the second time n2 and the third time n3.

Taking Figure 4 as an example, assuming K1=4, UE1 selects n+t1, n+t2, n+t3, and n+t4 in the resource selection window determined at time n. If UE1 is at n+ Before t1, it is found that other UEs have reserved any one or more of n+t1, n+t2, n+t3, n+t4, such as the transmission resource of n+t3, and the priority of other UEs is higher than that of UE1 High, UE1 needs to perform resource reselection between n and n+t1. When UE1 performs resource reselection, the reserved transmission resources n+t1, n+t2 and n+t4 are available transmission resources. A reselection is required, and the resources at time n+t3 are unavailable resources and need to be reselected.

FIG. 7 is a flowchart of another embodiment of the present disclosure based on step S510 of FIG. 5.

As shown in FIG. 7, in the embodiment of the present disclosure, the above step S510 may further include the following steps.

In step S514, a fourth time n4 is determined, the fourth time n4 is located before the first time n1, and the fourth time n4 is the time for resource selection. n4 is a real number greater than or equal to 0 and less than n1.

In step S515, a fifth time n5 is determined. The fifth time n5 is the time domain position of the first transmission resource among the K2 transmission resources selected during resource selection at the fourth time n4, and K2 is greater than A positive integer of 1. n5 is a real number greater than n4.

In step S516, a sixth time n6 is determined. The sixth time n6 is the time of the K2 transmission resources selected during resource selection at the fourth time n4, except for the first transmission resource. The domain position, for example, n6 is the time domain position of the second transmission resource among the K2 transmission resources. n6 is a real number greater than n5.

In step S517, the first time n1 is determined between the fifth time n5 and the sixth time n6.

Taking the above figure 4 as an example, assuming K2=4, UE1 selects n+t1, n+t2, n+t3, n+t4 these four transmission resources in the resource selection window determined at time n, if UE1 is in n If no resource conflict is found before time +t1, it needs to select a transmission resource such as n+t5 before sending SCI at time n+t2, so that the SCI sent at time n+t2 can also continue to indicate 4 transmission resources n+t2, n+t3, n+t4, n+t5, that is, UE1 needs to select resources between n+t2 and n+t1.

FIG. 8 is a flowchart of an embodiment of the present disclosure based on step S530 of FIG. 5. As shown in FIG. 8, in the embodiment of the present disclosure, the above step S530 may further include the following steps.

In step S531, the lowest time domain position and the highest time domain position of the reserved transmission resource at the first moment are determined according to the time domain position of the reserved transmission resource at the first moment.

It is assumed here that the lowest time domain position of the reserved transmission resources of the terminal at the first moment is n+t _low , and the highest time domain position is n+t _high , where n represents the time when the terminal performs resource selection or reselection. It should be understood that if The terminal only reserves one transmission resource at the first moment, then t _low = t _high .

In step S532, the resource selection window at the first moment is determined according to the lowest time domain position and the highest time domain position.

FIG. 9 is a schematic diagram of an embodiment of determining a resource selection window based on the method of FIG. 8 in the present disclosure.

As shown in Figure 9, the lower bound of the resource selection window is n+t _{low_bound1} = n+t _low ; the upper bound of the resource selection window: n+t _{upper_bound1} = n+t _high .

According to the method for determining the resource selection window provided by the embodiments of the present disclosure, when the terminal performs resource selection or resource reselection, if there are reserved transmission resources, the time domain position of the reserved transmission resource can be used to determine the resource selection window. The location, for example, the resource can be selected between the lowest time domain position n+t _low and the highest time domain position n+t _high. It can be seen from FIG. 9 that the resource selection window determined by the method of the embodiment of the present disclosure has a smaller range than the resource selection window [n+T1, n+T2] determined by related technologies. Therefore, on the one hand, the user terminal When resource selection is performed in the resource selection window of [n+t _low ,n+t _high ], it is possible to shorten the delay required from when it is determined that the transmission of the D2D signal is to be performed to when the transmission of the D2D signal is actually started; On the one hand, it can also realize resource reselection and chain resource selection or reservation. In addition, by setting _{the resource selection window of [n+t low} , n+t _high ], especially in the case where the period of semi-permanent transmission of the D2D signal is long (that is, the size of the listening window is large), Can shorten the delay more effectively. At the same time, the resource selection window determined by the method described in the embodiment of the present disclosure has a larger offset than the resource selection window [n+T1, n+T2] determined by the related technology, and can be offset after the generation of the D2D signal that should be sent. The D2D signal is actually transmitted after the time shift, so the processing burden of the user terminal UE can be reduced.

FIG. 10 is a flowchart of another embodiment of the present disclosure based on step S530 of FIG. 5. As shown in FIG. 10, in the embodiment of the present disclosure, the above step S530 may further include the following steps.

In step S533, a first gap parameter t _{gap1 is} determined, and the first gap parameter t _{gap1 is} used to indicate the maximum time gap between two adjacent transmission resources indicated by the side link control information SCI.

In the embodiments of the present disclosure, the SCI may include an indication field, which may be used to indicate the time interval between any two adjacent transmission resources in the K transmission resources that the SCI can indicate, and the maximum value of the time interval may be expressed as t _gap1 .

For example, assuming that the indicator field in the SCI is 3 bits, the maximum time interval between two adjacent transmission resources that it can indicate is 8 time slots (considering that any two transmission resources will not be in the same time slot, so The value will not be 0, so the value range of 3 bits is 1 to 8), at this time t _gap1 =8. It should be noted that _{the value of t gap1} here is only related to the number of bits contained in the indicator field in the SCI. For example, if the indicator field in the SCI is j bits and j is a positive integer greater than or equal to 1, then t _gap1 = 2 ^j . Regardless of the maximum time interval between any two adjacent transmission resources in the K transmission resources actually indicated by the SCI, taking the above figure 4 as an example, the SCI indicates the 4 transmission resources in the SCI sent at the time n+t1. N+t1, n+t2, n+t3, n+t4, but t _gap1 is not equal to max(t2-t1, t3-t2, t4-t3), but multiple transmission resources indicated by SCI sent at any time The maximum time interval between any two adjacent transmission resources in will not exceed t _gap1 .

In step S534, the resource selection window at the first time is determined according to the time domain position of the reserved transmission resource at the first time and the first interval parameter.

In the embodiment of the present disclosure, the terminal can determine the resource reselection or the maximum time interval between any two adjacent transmission resources among the multiple transmission resources that can be indicated in the SCI according to the time domain position of the reserved transmission resource. Resource selection window during resource selection.

FIG. 11 is a flowchart of an embodiment of the present disclosure based on step S534 of FIG. 10. As shown in FIG. 11, in the embodiment of the present disclosure, the above step S534 may further include the following steps.

In step S5341, according to the time domain position of the reserved transmission resource at the first moment, determine the lowest time domain position n+t _low of the reserved transmission resource at the first moment.

In step S5342, in accordance with a first duration parameter T ', the lowest temporal position n + t _low and the first interval parameter t _gap1, determining the resource selection window first time the lower bound of _n + t low_bound2.

The first duration parameter T′ is related to the processing delay T _{proc,1 of the} electronic device.

In some embodiments, it can be determined according to the following formula (1):

t _{low_bound2} = max(T1, t _low -t _gap1 ) (1)

(1) seen from the above equation, if _t _low -t gap1 is less than T1, T1 is selected to determine the selected lower bound of the window, _wherein, 0≤T1≤T _proc, select _1, based on the terminal T1 may be implemented; if t _low - If t _{gap1 is} greater than or equal to T1, t _low- t _gap1 is selected to determine the lower bound of the selection window.

In other embodiments, it can be determined according to the following formula (2):

t _{low_bound2} = max(T _proc,1 ,t _low -t _gap1 ) (2)

(2) seen from the above equation, _t _low -t gap1 if less than T _{proc, 1,} then select T _{proc, 1} to determine the lower bound of the selection window; if _t _low -t gap1 is greater than or equal to T _{proc, 1,} t is selected _low -t _gap1 to determine the lower bound of the selection window.

FIG. 12 is a flowchart of another embodiment of the present disclosure based on step S534 of FIG. 10. As shown in FIG. 12, in the embodiment of the present disclosure, the above step S534 may further include the following steps.

In step S5343, according to the time domain position of the reserved transmission resource at the first moment, the highest time domain position n+t _high of the reserved transmission resource at the first moment is determined.

_{In step S5344, the upper bound n+t upper_bound2} of the resource selection window at the first moment is determined according to the second duration parameter T2, the highest time domain position n+t _high, and the first interval parameter t _gap1 .

The second duration parameter T2 is related to the delay requirement of the service.

In some embodiments, it can be determined according to the following formula (3):

t _{upper_bound2} = min(T2,t _high +t _gap1 ) (3)

Among them, T _th2 ≤ _{T2 ≤ T th3} , T _th2 is a network configuration or pre-configured parameter, and _{the selection of T th2} can be implemented based on the terminal. For example, T _th2 is a parameter configured according to the time domain requirements of the service, or according to the service Priority configuration parameters. T _th3 is a parameter of the network configuration, a pre-configured parameter, a parameter configured according to the priority of the service, or a parameter determined according to the delay requirement of the service.

In LTE V2X, the main target service is periodic service; in NR V2X, both periodic and aperiodic services need to be supported. The resource selection window is redefined in NR V2X. The start time of the resource selection window is n+T1, and the end time of the resource selection window is (n+min(T2, T _{rm_PDB} )), where T _{rm_PDB} represents the remaining time Therefore, in other embodiments, it can be determined according to the following formula (4):

t _{upper_bound2} = min(T2, T _{rm_PDB} , t _high + t _gap1 ) (4)

For example, if data arrives at the terminal at time n, resource selection is required, the processing delay of the terminal is 4ms, and the service delay requirement is 100ms, then the selection window determined by the terminal at time n is [n+4,n+ 100]ms; 4 transmission resources are selected in the [n+4,n+100]ms selection window, assuming that they are located in time slots n+10, n+20, n+30, and n+40, then the terminal is in time The 4 transmission resources are indicated in the SCI sent in slot n+10. After the terminal sends the SCI and the corresponding data at n+10, the resource selection is required between n+10 and n+20, for example, n+15. An additional transmission resource is used to implement chain resource selection or reservation, and time n+15 is recorded as n', and n'is the time for resource selection.

If the time interval between two adjacent transmission resources indicated in the SCI is a maximum of 8 time slots, that is, t _gap1 = 8, since there are already 3 reserved transmission resources when resource selection is performed at time n', they are located at n'+5, n'+15, n'+25 time slots, ie t _low = 5, t _high = 25, so t _low- t _gap1 = -3, and T _proc,1 = 4, therefore, according to the above Formula (2), the lower bound of the determined resource selection window is n'+T _proc,1 , so when the terminal selects resources at time n', the lower bound of the determined resource selection window is n'+4.

t _high + t _gap1 = 33, and T _{rm_PDB} = 85. Therefore, according to the above formula (4), the upper bound of the determined resource selection window is n'+ t _high + t _gap1 , that is, the terminal selects resources at time n' When, the upper bound of the determined resource selection window is n'+32.

Therefore, the resource selection window determined by the terminal at time n'is [n'+4, n'+32], and the selection window already includes 3 transmission resources, namely n'+5, n'+15, n' +25, the terminal can select another transmission resource in the selection window, and the newly selected transmission resource and the three existing transmission resources can be indicated by SCI.

A specific example is shown in Figure 13-16 below. In the illustration here, the upper bound of the resource selection window only exemplarily considers T2, and does not consider T _{rm_PDB} . According to related technologies, when the terminal performs resource selection or resource reselection at time n, the start position of its resource selection window is n+T1, and the end position is n+T2. However, because the terminal has reserved transmission resources during resource selection or reselection, two reserved transmission resources are shown in the figure, corresponding to the lowest time domain position n+t _low and the highest time domain position n+t _high. ; If the maximum time interval between two adjacent transmission resources that can be indicated by the SCI is t _gap1 , on the basis of the above resource selection window [n+T1,n+T2], the position of the resource selection window can be further limited It is [n+t _{low_bound2} ,n+t _{upper_bound2} ]. The resources outside the selection window are beyond the scope of the SCI indication, and therefore are unavailable resources.

FIG. 13 is a schematic diagram of an embodiment of determining a resource selection window based on the method of FIGS. 11 and 12 in the present disclosure.

As shown in Figure 13, the figure shows that t _low -t _{gap1 is} greater than T1, so the lower bound of the corresponding resource selection window is n+t _{low_bound2} = n+t _low -t _gap1 ; t _high + t _{gap1 is} less than T2, Therefore, the upper bound of the corresponding resource selection window is n+t _{upper_bound2} = n+t _high + t _gap1 .

FIG. 14 is a schematic diagram of another embodiment of determining a resource selection window based on the method of FIGS. 11 and 12 in the present disclosure.

As shown in Figure 14, the figure shows that t _low -t _{gap1 is} less than or equal to T1, then the lower bound of the corresponding resource selection window is n+t _{low_bound2} = n+T1; t _high + t _{gap1 is} less than T2, so the corresponding resource The upper bound of the selection window is n+t _{upper_bound2} = n+t _high + t _gap1 .

Fig. 15 is a schematic diagram of another embodiment of determining a resource selection window based on the method of Figs. 11 and 12 in the present disclosure.

As shown in Figure 15, the figure shows that t _low -t _{gap1 is} greater than T1, so the lower bound of the corresponding resource selection window is n+t _{low_bound2} = n+t _low -t _gap1 ; t _high + t _{gap1 is} greater than or equal to T2, so the upper bound of the corresponding resource selection window is n+t _{upper_bound2} =n+T2.

FIG. 16 is a schematic diagram of still another embodiment of determining a resource selection window based on the method of FIGS. 11 and 12 in the present disclosure.

As shown in Figure 16, the figure shows that t _low- t _{gap1 is} less than or equal to T1, so the lower bound of the corresponding resource selection window is n + t _{low_bound2} = n + T1; t _high + t _{gap1 is} greater than or equal to T2, Therefore, the upper bound of the corresponding resource selection window is n+t _{upper_bound2} =n+T2.

FIG. 17 is a flowchart of another embodiment of the present disclosure based on step S530 of FIG. 5. As shown in FIG. 17, in the embodiment of the present disclosure, the above step S530 may further include the following steps.

In step S535, the second interval is determined parameter t _gap2, the second interval parameter t _gap2 a side uplink control the maximum time between the transmission resource information SCI interval indicated.

In the embodiment of the present disclosure, the SCI may include a bitmap, and each bit in the bitmap may be used to indicate whether the time slot corresponding to the bit has reserved transmission resources. For example, the SCI includes a 16-bit bitmap. If the value of the bitmap is 0000 0100 1000 0010, it indicates whether the corresponding time slot of the 16 time slots starting from time n includes reserved transmission resources. 16 bits correspond to n, n+1,..., n+15 time slots. Since the SCI sent at time n indicates the transmission resource at that time, the SCI also needs to indicate the other 3 reserved time slots through the bitmap Transmission resources. In the above example, the time slots corresponding to the three bits with a value of 1 are time slots n+5, n+8, and n+14, respectively.

In the embodiment of the present disclosure, the second interval parameter t _gap2 represents the maximum time interval between transmission resources that can be indicated by the SCI. It should be noted that _{the value of t gap2} depends on the bit number i of the bitmap, i is greater than 1. A positive integer of t _gap2 = i-1, and has nothing to do with the value of each bit of the bitmap. For example, in the above example, the bitmap includes 16 bits, then t _gap2 =15.

In step S536, the resource selection window at the first time is determined according to the time domain position of the reserved transmission resource at the first time and the second interval parameter.

In the embodiment of the present disclosure, when the terminal is performing resource selection or resource reselection, if there are reserved transmission resources, the terminal can use the time domain position of the reserved transmission resource and the transmission resources that can be indicated in the SCI. The maximum time interval determines the resource selection window.

At this time, the lower and upper bounds of the resource selection window are:

FIG. 18 is a flowchart of an embodiment of the present disclosure based on step S536 of FIG. 17. As shown in Fig. 18, in the embodiment of the present disclosure, the above step S536 may further include the following steps.

In step S5361, according to the time domain position of the reserved transmission resource at the first moment, the highest time domain position n+t _high of the reserved transmission resource at the first moment is determined.

In step S5362, in accordance with a first duration parameter T ', the highest temporal position n + t _high and the second interval parameter t _gap2, determining the first time the resource selection window lower bound of _n + t low_bound3.

In some embodiments, it can be determined according to the following formula (5):

t _{low_bound3} = max(T1,t _high -t _gap2 ) (5)

That is, if t _high- t _{gap2 is} less than T1, T1 is selected to determine the lower bound of the selection window; if t _high- t _{gap2 is} greater than or equal to T1, then t _high- t _gap2 is selected to determine the lower bound of the selection window.

In other embodiments, it can be determined according to the following formula (6):

t _{low_bound3} = max(T _proc,1 ,t _high -t _gap2 ) (6)

That is, if t _high -t _gap2 less than T _{proc, 1,} then select T _{proc, 1} to determine the lower bound of the selection window; if t _high -t _gap2 than or equal to T _{proc, 1,} t _high -t _gap2 is selected to determine the selection The lower bound of the window.

FIG. 19 is a flowchart of another embodiment of the present disclosure based on step S536 of FIG. 17. As shown in FIG. 19, in the embodiment of the present disclosure, the above step S536 may further include the following steps.

In step S5363, according to the time domain position of the reserved transmission resource at the first moment, determine the lowest time domain position t _low of the reserved transmission resource at the first moment.

In step S5364, according to the second time duration parameter T2, the lowest position of t _low time domain and the second interval parameter t _gap2, determines the upper bound of the resource selection window first instant _t upper_bound3.

In some embodiments, it can be determined according to the following formula (7):

t _{upper_bound3} = min(T2,t _low +t _gap2 ) (7)

That is, if t _low + t _{gap2 is} less than T2, t _low + t _gap2 is selected to determine the upper bound of the selection window; if t _low + t _{gap2 is} greater than or equal to T2, T2 is selected to determine the upper bound of the selection window.

In other embodiments, it can be determined according to the following formula (8):

_{t upper_bound3 = min (T2, T} rm_PDB, t low + t gap2) (8)

For example, if data arrives at the terminal at time n, resource selection is required. The processing delay of the terminal is 4ms, the delay requirement of the service is 100ms, and the selection window determined by the terminal at time n is [n+4,n+100] ; Select 4 transmission resources in the selection window, assuming that they are located in time slots n+6, n+12, n+14, and n+15, and the terminal indicates the 4 transmissions in the SCI sent in time slot n+6 Resources, relative to time n+6, the bitmap in the SCI is: 0000 0010 1100 0000. After the terminal sends the SCI and the corresponding data at time n+6, it needs to select resources between n+6 and n+12, such as at time n+8, and select an additional transmission resource to achieve chain resource selection or reservation , And mark the time n+8 as n', that is, the time when the resource is selected.

If the time interval of the transmission resource indicated in the SCI is 15 time slots at most, for example, multiple reserved transmission resources are indicated by a 16-bit bitmap, that is, t _gap2 = 15; because there is already a resource selection at time n' The three reserved transmission resources are located in time slots n'+4, n'+6, and n'+7 respectively, that is, t _low = 4, t _high = 7, so t _high- t _gap2 = -8, and T _proc,1 = 4, therefore, the lower bound of the resource selection window determined according to the above formula (6) is n'+T _proc,1 , so when the terminal selects resources at time n', the determined lower bound of the resource selection window is n '+4.

t _low + t _gap2 = 19, and _T rm_PDB = 85, therefore, determined according to the above equation (8) resource selection window upper bound '+ t _low + t _gap2, therefore, the terminal n' resources selected as n time When, the upper bound of the determined resource selection window is n'+19.

Therefore, the resource selection window determined by the terminal at time n'is [n'+4, n'+19], and the selection window already includes 3 transmission resources, namely n'+4, n'+6, n' +7, the terminal can select another transmission resource in the selection window, and the newly selected transmission resource and the three existing transmission resources can be indicated by SCI.

An example is given below in conjunction with Figures 20-23, and T _{rm_PDB} is also not considered here. As shown in the figure, the terminal performs resource selection or resource reselection at time n, and the start position of its resource selection window is n+T1, and the end position is n+T2. However, because the terminal already has reserved transmission resources during resource selection or reselection, two reserved transmission resources are shown in the figure, and the corresponding time domain positions are n+t _low and n+t _{high respectively} . If the maximum time interval between transmission resources that the SCI can indicate is t _gap2 , then on the basis of the above resource selection window [n+T1,n+T2], the position of the resource selection window can be further limited to [n+t _{low_bound3} ,n+t _{upper_bound3} ], the resources outside the selection window are beyond the indication range of SCI, so they are unavailable resources.

FIG. 20 is a schematic diagram of an embodiment of determining a resource selection window based on the method of FIGS. 18 and 19 in the present disclosure.

As shown, t _high -t _gap2 given case 20 is greater than T1, and thus the corresponding resource selection window lower bound of _{n + t low_bound3 = n + t} high -t gap2; t low + t gap2 less than T2, and therefore the corresponding The upper bound of the resource selection window n+t _{upper_bound3} = n+t _low + t _gap2 .

FIG. 21 is a schematic diagram of another embodiment of determining a resource selection window based on the method of FIGS. 18 and 19 in the present disclosure.

As shown in Figure 21, t _high- t _gap2 gives a situation that is less than or equal to T1, so the lower bound of the corresponding resource selection window is n + t _{low_bound3} = n + T1; t _low + t _{gap2 is} less than T2, so the corresponding resource The upper bound of the selection window is n+t _{upper_bound3} = n+t _low + t _gap2 .

Fig. 22 is a schematic diagram of another embodiment of determining a resource selection window based on the method of Figs. 18 and 19 in the present disclosure.

As shown in Figure 22, t _high- t _gap2 gives a situation that is less than or equal to T1, so the lower bound of the corresponding resource selection window is n + t _{low_bound3} = n + T1; t _low + t _{gap2 is} greater than or equal to T2, so corresponding The upper bound of the resource selection window n+t _{upper_bound3} =n+T2.

FIG. 23 is a schematic diagram of still another embodiment of determining a resource selection window based on the method of FIGS. 18 and 19 in the present disclosure.

23, t _high -t _gap2 given of the case is greater than T1, and thus the corresponding resource selection window lower bound of _{n + t low_bound3 = n + t} high -t gap2; t low + t gap2 is greater than or equal to T2, Therefore, the upper bound of the corresponding resource selection window is n+t _{upper_bound3} =n+T2.

In the method for determining the resource selection window provided by the embodiments of the present disclosure, when the terminal performs resource selection or resource reselection, if there are reserved transmission resources, it can be based on the time domain position of the reserved transmission resource and the transmission indicated by the SCI The time interval between resources determines the location of the resource selection window. It can be seen from the above embodiments that the resource selection window determined by the method described in the embodiments of the present disclosure is less than or equal to the resource selection window [n+T1,n+T2] determined by related technologies. Therefore, on the one hand, the user terminal is When performing resource selection in the resource selection window, it is possible to shorten the delay required from the time when it is determined that the transmission of the D2D signal is to be sent to the actual start of the transmission of the D2D signal; on the other hand, it can also realize resource reselection and chained resources Select or reserve. In addition, by setting the resource selection window, especially when the period of semi-permanently transmitting D2D signals is long (that is, when the size of the listening window is large), the delay can be more effectively shortened. At the same time, the offset of the resource selection window determined by the method described in the embodiments of the present disclosure is greater than or equal to the offset of the resource selection window [n+T1, n+T2] determined by the related technology, which can be used to generate the D2D signal that should be sent. After the offset time has elapsed, the D2D signal is actually transmitted. Therefore, the processing load of the user terminal UE can be reduced.

In an exemplary embodiment, the method may further include: when resource selection is performed in the resource selection window at the first moment, excluding the transmission resource on the time slot where the reserved transmission resource at the first moment is located.

For example, the resource selection window determined by the terminal at time n'is assumed to be [n'+4, n'+19], and the selection window already includes 3 transmission resources, namely n'+4, n'+6, n '+7, when the terminal selects transmission resources again in this selection window, it needs to exclude all the transmission resources on the time slots n'+4, n'+6, and n'+7. For example, if the n'+4 time slot includes 100 PRBs and 10 of them are reserved, then when selecting resources at time n', all these 100 PRBs need to be excluded.

Generally, the terminal can only send one sideline data channel at the same time, that is, the terminal can only send one PSSCH in a time slot, and cannot send more than one PSSCH channel. Therefore, when the terminal selects resources, if there is a reservation According to the above embodiment, the resource selection window includes the reserved transmission resources. Therefore, when the terminal selects resources, it cannot select the transmission resources from the time domain resources where the reserved transmission resources are located, that is, the terminal is in the resource selection process In the resource selection window, the transmission resources on the time domain resources where the reserved transmission resources are located need to be excluded.

The method for determining the resource selection window provided by the embodiments of the present disclosure provides that the terminal determines the position of the resource selection window according to the time domain position of the reserved transmission resource and the time interval indicated by the SCI when selecting the resource, so that the terminal is The transmission resource selected in the selection window can be indicated by the SCI. In addition, the terminal excludes the transmission resources on the reserved transmission resources when selecting resources, which can avoid resource conflicts.

In the embodiments of the present disclosure, the user terminal UE may only use the resource selection using interception during resource reselection, and does not perform interception in the resource selection during the initial transmission, but randomly selects resources within the selection window. Since there is no need to always listen in the background, the battery consumption of the user terminal UE can be reduced. The transmission resource pool used in random resource selection and listening-based resource selection may be different. For example, it is possible to set (in advance) the resource selection method applicable for each resource pool in the user terminal UE by the higher layer.

In addition, if the user terminal UE detects that the interference level (or RSSI) is above a predetermined threshold as a result of the user terminal UE's listening, it can fall back from the listening-based resource selection to the random resource selection. The number of resource selection candidates increases, and the randomization effect of interference can be expected. The user terminal UE can switch whether to perform such an action according to the number of monitored resources/number of subframes, the number of candidates for selected resources, and/or terminal capabilities. The threshold of the interference level can be set (in advance) in the user terminal UE by the higher layer.

The user terminal UE may also change the size of the selection window that may be acquired in the case of resource selection based on listening and in the case of random resource selection. For example, in the case of random resource selection, the randomization effect may be increased by specifying a larger selection window size. The size of the selection window can also be set according to each grouping priority and resource pool.

The user terminal UE can ease the listening process according to the terminal capabilities or resource pool settings. For example, interception can be composed of steps based on decoding or measurement of control information and steps based on power detection (RSSI measurement, etc.), but the user terminal UE may only implement the steps based on power detection among them. In this case, the user terminal UE does not need to perform blind detection of control information, which can reduce terminal cost and power consumption.

In the case of transmitting the D2D signal semi-permanently, the user terminal UE is allowed to listen before the transmission of the D2D signal is initially started, and in the subsequent period, the D2D signal is transmitted through the selected resource. In addition, the user terminal UE transmits the D2D signal through the periodic resources after the selected resource, and therefore does not listen (skip) in the resource for transmitting the D2D signal for the second time and thereafter. When operating in this manner, the same user terminal UE can continue to continuously use the same resources. Therefore, the user terminal UE can also be regarded as a resource for transmitting a D2D signal, etc., without (skip) listening, and the resource is occupied in the period thereafter, and is collectively excluded from the resource selection candidates.

Fig. 24 is a structural block diagram of an embodiment of an apparatus for determining a resource selection window of the present disclosure.

As shown in FIG. 24, the apparatus 2400 for determining a resource selection window provided by an embodiment of the present disclosure may include a first moment determination module 2410, a reserved resource acquisition module 2420, and a selection window determination module 2430.

Wherein, the first moment determining module 2410 may be configured to determine the first moment, and the first moment is the moment when resource selection is performed. The reserved resource obtaining module 2420 may be configured to obtain the reserved transmission resource at the first moment. The selection window determination module 2430 may be configured to determine the resource selection window at the first time according to the time domain position of the reserved transmission resource at the first time.

In an exemplary embodiment, the selection window determining module 2430 may include: a high and low time domain position determining unit, which may be configured to determine the reservation of the first time according to the time domain position of the reserved transmission resource at the first time The lowest time domain position and the highest time domain position of the transmission resource; the first selection window determining unit may be configured to determine the resource selection window at the first moment according to the lowest time domain position and the highest time domain position.

In an exemplary embodiment, the selection window determining module 2430 may include: a first interval parameter determining unit, which may be configured to determine a first interval parameter, where the first interval parameter is used to indicate the neighboring parameters indicated by the side link control information. The maximum time interval between two transmission resources; the second selection window determining unit may be configured to determine the first time according to the time domain position of the reserved transmission resource at the first time and the first interval parameter Resource selection window.

In an exemplary embodiment, the second selection window determining unit may include: a first lowest time domain position determining subunit, which may be configured to determine the time domain position of the reserved transmission resource at the first moment The lowest time domain position of the reserved transmission resource at the first moment; the first selection window lower bound determining subunit may be configured to determine the first time length parameter, the lowest time domain position, and the first interval parameter The lower bound of the resource selection window at a moment. The first duration parameter is related to the processing delay of the electronic device.

In an exemplary embodiment, the second selection window determining unit may include: a first highest time domain position determining subunit, which may be configured to determine the time domain position of the reserved transmission resource at the first moment The highest time domain position of the reserved transmission resource at the first moment; the first selection window upper bound determination subunit may be configured to determine the first interval parameter based on the second duration parameter, the highest time domain position, and the first interval parameter. The upper bound of the resource selection window at the first moment. The second duration parameter is related to the delay requirement of the service.

In an exemplary embodiment, the selection window determining module 2430 may include: a second interval parameter determining unit, which may be configured to determine a second interval parameter, where the second interval parameter represents the distance between the transmission resources indicated by the side link control information The third selection window determining unit may be configured to determine the resource selection window at the first time according to the time domain position of the reserved transmission resource at the first time and the second interval parameter.

In an exemplary embodiment, the third selection window determining unit may include: a second highest time domain position determining subunit, which may be configured to determine the time domain position of the reserved transmission resource at the first moment The highest time domain position of the reserved transmission resource at the first moment; the second selection window lower bound determination subunit may be configured to determine the first time length parameter, the highest time domain position, and the second interval parameter The lower bound of the resource selection window at a moment. The first duration parameter is related to the processing delay of the electronic device.

In an exemplary embodiment, the third selection window determining unit may include: a second lowest time domain position determining subunit, which may be configured to determine the time domain position of the reserved transmission resource at the first moment The lowest time domain position of the reserved transmission resource at the first moment; the second selection window upper bound determination subunit may be configured to determine the second time length parameter, the lowest time domain position, and the second interval parameter The upper bound of the resource selection window at the first moment. The second duration parameter is related to the delay requirement of the service.

In an exemplary embodiment, the first moment determining module 2410 may include: a second moment determining unit, which may be configured to determine a second moment, where the second moment is before the first moment, and the second moment is The moment of resource selection; the third moment determining unit may be configured to determine a third moment, the third moment being the time of the first transmission resource among the K1 transmission resources selected during resource selection at the second moment The domain position, K1 is a positive integer greater than or equal to 1; the first moment determining unit may be configured to determine the first moment between the second moment and the third moment.

In an exemplary embodiment, the first moment determining module 2410 may include: a fourth moment determining unit, which may be configured to determine a fourth moment, where the fourth moment is before the first moment, and the fourth moment is The time of resource selection; the fifth time determining unit may be configured to determine the fifth time, the fifth time being the time of the first transmission resource among the K2 transmission resources selected during resource selection at the fourth time Domain location, K2 is a positive integer greater than 1. The sixth moment determining unit may be configured to determine the sixth moment, where the sixth moment is divided by the K2 transmission resources selected during resource selection at the fourth moment The time domain location of transmission resources other than the first transmission resource; the first time obtaining unit may be configured to determine the first time between the fifth time and the sixth time.

In an exemplary embodiment, the device 2400 for determining a resource selection window may further include: a resource exclusion module, which may be configured to exclude the reservation at the first moment when resource selection is performed in the resource selection window at the first moment. The transmission resource on the time slot where the transmission resource is located.

The electronic device in the embodiment of the present disclosure may be the user terminal UE in the above-mentioned embodiment, which has at least a function for performing actions in accordance with LTE, and may perform a part of the user terminal UE processing described above.

The user terminal UE has a signal transmission module, which has the function of generating various signals of the physical layer based on the high-layer signal sent from the user terminal UE and performing wireless transmission. In addition, the signal transmission module has a D2D signal transmission function and a cellular communication transmission function. In addition, the signal sending module has the function of sending D2D signals using the selected resource.

In addition, the signal transmission module may use the resource for transmitting the D2D signal to transmit reservation information indicating that the transmission of the signal is scheduled by the selected "resource for reservation of the transmission of the D2D signal".

The user terminal UE also includes a signal receiving module, which includes the functions of receiving various signals wirelessly from other user terminals UE or base station eNB, and obtaining higher layer signals from the received physical layer signals. In addition, the signal receiving module has D2D signal receiving function and cellular communication receiving function.

The user terminal UE has a function of detecting one or more resources capable of transmitting D2D signals in the selection window behind the listening window by listening in the listening window. The user terminal UE has a function of selecting a resource for transmitting a D2D signal from more than one detected resource. In addition, in the case of detecting multiple resources, the user terminal UE may also autonomously or according to an instruction from the base station eNB decide whether to randomly select a resource for transmitting D2D signals from the multiple resources, or according to a prescribed The condition selects the resource used to transmit the D2D signal. In addition, the user terminal UE may also select a resource reserved for the transmission of the D2D signal from one or more resources that can be reserved for the transmission of the detected D2D signal.

The specific implementation of the modules, units, and sub-units of the device for determining the resource selection window provided by the embodiments of the present disclosure may refer to the content of the method for determining the resource selection window provided in the above-mentioned embodiments, which will not be repeated here.

FIG. 25 is a schematic structural diagram of an embodiment of an electronic device of the present disclosure. As shown in FIG. 25, the electronic device 2500 provided by the embodiment of the present disclosure may include a storage unit 2510 and a processing unit 2520.

Among them, the storage unit 2510 may be used to store a program for determining the resource selection window. The processing unit 2520 may be configured to run a program for determining a resource selection window, and when the program for determining a resource selection window is executed, run the method for determining a resource selection window as described in any of the foregoing embodiments.

In the embodiments of the present disclosure, the electronic device has an RF (Radio Frequency, radio frequency) module for processing related to wireless signals, a BB (Base Band) processing module for baseband signal processing, and a UE control module for processing high-level processing. .

The RF module performs D/A (Digital-to-Analog) conversion, modulation, frequency conversion, and power amplification on the digital baseband signal received from the BB processing module to generate a wireless signal that should be sent from the antenna. In addition, by performing frequency conversion, A/D (Analog to Digital) conversion, and demodulation on the received wireless signal, a digital baseband signal is generated and passed to the BB processing module. The RF module includes, for example, a part of a signal transmitting module and a part of a signal receiving module.

The BB processing module performs the processing of converting IP (Internet Protocol Address) packets and digital baseband signals to and from each other. DSP (Digital Signal Processor) is a processor that performs signal processing in the BB processing module. The memory is used as the working area of the DSP. The BB processing module includes, for example, a part of a signal transmission module and a part of a signal reception module.

The UE control module performs IP layer protocol processing and various application processing. The processor is a processor that performs processing performed by the UE control module. The memory is used as the working area of the processor.

The embodiments of the present disclosure also provide a base station. The base station eNB has a signal sending module, a signal receiving module, and a notification module, and at least has a function for performing actions in accordance with LTE. As long as the operation of this embodiment can be executed, the function division and the name of the function section may be arbitrary.

The signal transmission module includes the function of generating various signals of the physical layer based on the high-layer signal sent from the user terminal UE and performing wireless transmission. The signal receiving module includes the function of wirelessly receiving various signals from the user terminal UE and obtaining higher layer signals based on the received physical layer signals.

The notification module uses broadcast information or RRC signaling to notify the user terminal UE of various information used by the user terminal UE to perform operations in this embodiment. In addition, the various kinds of information are, for example, information indicating the setting of the resource pool, information indicating the start position and end position of each window (listening window, selection window, and reservation window), and the like.

The entire functional structure of the user terminal UE and the base station eNB described above may be implemented by hardware circuits (for example, one or more chips), or may be formed by a hardware circuit, and other parts may be implemented by a CPU and a program.

In the exemplary embodiment of the present disclosure, there is also provided a readable storage medium on which is stored a program product capable of implementing the above-mentioned method of this specification. In some possible implementation manners, various aspects of the present disclosure can also be implemented in the form of a program product, which includes program code. When the program product runs on a terminal device, the program code is used to make the terminal device execute the above-mentioned instructions in this specification. The steps according to various exemplary embodiments of the present disclosure are described in the example section.

As mentioned above, the structure of each device (user terminal UE/base station eNB) described in this embodiment may be a structure implemented by the CPU (processor) executing a program in the device having a CPU and memory, or it may be A configuration implemented by hardware such as a hardware circuit having the processing logic described in this embodiment may also be a configuration in which a program and hardware are mixed.

The embodiments of the present disclosure have been described above, but the disclosed invention is not limited to such embodiments, and those of ordinary skill in the art should understand various modifications, corrections, substitutions, replacements, and the like. In order to promote the understanding of the invention, specific numerical examples have been described, but unless otherwise specified, these numerical values are merely examples, and any appropriate value may be used. The distinction between the items in the above description is not essential to the present disclosure, and the items described in two or more items can be used in combination as needed, or the items described in a certain item can be applied to Items recorded in other items (as long as there is no contradiction). The boundaries of the functional unit or the processing unit in the functional block diagram do not necessarily correspond to the boundaries of physical components. The operations of a plurality of functional units may be executed by one physical component, or the operations of one functional unit may be executed by a plurality of physical components. The sequence and flow described in the implementation manner can be reversed if there is no contradiction. In order to facilitate the description of processing, a functional block diagram is used to illustrate the user terminal UE/base station eNB, and such a device can also be implemented by hardware, software, or a combination thereof. The software operated by the processor of the user terminal UE according to the embodiment of the present disclosure and the software operated by the processor of the base station eNB according to the embodiment of the present disclosure may also be stored in random access memory and flash memory, respectively. Fast memory, read-only memory, registers, hard disk, removable disk, database, server and other suitable arbitrary storage media.

In addition, the terms described in this specification and/or terms necessary for understanding this specification can be replaced with terms having the same or similar meaning. For example, the channel and/or symbol may be a signal. In addition, the signal can be a message.

For UE, those skilled in the art sometimes use the following terms to refer to: subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile user Station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other appropriate terminology.

Each form/embodiment described in this specification can be used alone or in combination, and can also be switched and used as it is executed.

The expression "based on" used in this specification does not mean "based on only" unless otherwise specified. In other words, the expression "based on" means both "based only on" and "based on at least".

In addition, as long as there is no contradiction, the order of the processing procedures, timings, etc. of each form/embodiment described in this specification may be changed. For example, for the method described in this specification, elements of various steps are presented in the illustrated order, but it is not limited to the specific order presented.

The input and output information can be stored in a specific location (for example, memory), or can be managed using a management table. You can rewrite, update, or append input and output information. You can also delete the output information, etc. You can also send the input information to other devices.

Any of a variety of different technologies can be used to represent the information, signals, etc. described in this specification. For example, voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination of these can be used to represent the data, commands, commands, information, signals, bits, and codes that may be involved in the above description. Symbol, chip, etc.

The present disclosure is not limited to the above-mentioned embodiments, and the present disclosure includes various modifications, corrections, substitutions, replacements, etc., without departing from the spirit of the present disclosure.

Although the present disclosure has been described with reference to a few typical embodiments, it should be understood that the terms used are illustrative and exemplary rather than restrictive. Since the present disclosure can be implemented in various forms without departing from the spirit or essence of the invention, it should be understood that the above-mentioned embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all changes and modifications falling within the scope of the claims or their equivalents shall be covered by the appended claims.

Claims

A method for determining a resource selection window is characterized in that it includes:

Determine the first moment, where the first moment is the moment for resource selection;

Acquiring the reserved transmission resource at the first moment;

Determine the resource selection window at the first time according to the time domain position of the reserved transmission resource at the first time.
The method for determining a resource selection window according to claim 1, wherein the determining the resource selection window at the first moment according to the time domain position of the reserved transmission resource at the first moment comprises:

Determine the lowest time domain position and the highest time domain position of the reserved transmission resource at the first time according to the time domain position of the reserved transmission resource at the first time;

Determine the resource selection window at the first moment according to the lowest time domain position and the highest time domain position.
The method for determining a resource selection window according to claim 1, wherein the determining the resource selection window at the first moment according to the time domain position of the reserved transmission resource at the first moment comprises:

Determining a first interval parameter, where the first interval parameter is used to indicate the maximum time interval between two adjacent transmission resources indicated by the side link control information;

Determine the resource selection window at the first time according to the time domain location of the reserved transmission resource at the first time and the first interval parameter.
The method for determining a resource selection window according to claim 3, wherein the time domain position of the reserved transmission resource at the first time and the first interval parameter are used to determine the time of the first time interval. Resource selection window, including:

Determine the lowest time domain position of the reserved transmission resource at the first moment according to the time domain position of the reserved transmission resource at the first moment;

Determine the lower bound of the resource selection window at the first moment according to the first duration parameter, the lowest time domain position, and the first interval parameter;

The first duration parameter is related to the processing delay of the electronic device.
The method for determining a resource selection window according to claim 3, wherein the time domain position of the reserved transmission resource at the first time and the first interval parameter are used to determine the time of the first time interval. Resource selection window, including:

Determine the highest time domain position of the reserved transmission resource at the first moment according to the time domain position of the reserved transmission resource at the first moment;

Determine the upper bound of the resource selection window at the first moment according to the second duration parameter, the highest time domain position, and the first interval parameter;

The second duration parameter is related to the delay requirement of the service.
The method for determining a resource selection window according to claim 1, wherein the determining the resource selection window at the first moment according to the time domain position of the reserved transmission resource at the first moment comprises:

Determining a second interval parameter, where the second interval parameter represents the maximum time interval between transmission resources indicated by the side link control information;

Determine the resource selection window at the first time according to the time domain location of the reserved transmission resource at the first time and the second interval parameter.
The method for determining a resource selection window according to claim 6, wherein the time domain position of the reserved transmission resource at the first time and the second interval parameter are used to determine the time at the first time. Resource selection window, including:

Determine the highest time domain position of the reserved transmission resource at the first moment according to the time domain position of the reserved transmission resource at the first moment;

Determine the lower bound of the resource selection window at the first moment according to the first duration parameter, the highest time domain position, and the second interval parameter;

The first duration parameter is related to the processing delay of the electronic device.
The method for determining a resource selection window according to claim 6, wherein the time domain position of the reserved transmission resource at the first time and the second interval parameter are used to determine the time at the first time. Resource selection window, including:

Determine the lowest time domain position of the reserved transmission resource at the first moment according to the time domain position of the reserved transmission resource at the first moment;

Determine the upper bound of the resource selection window at the first moment according to the second duration parameter, the lowest time domain position, and the second interval parameter;

The second duration parameter is related to the delay requirement of the service.
The method for determining a resource selection window according to claim 1, wherein the determining the first moment comprises:

Determine a second time, the second time is before the first time, and the second time is the time for resource selection;

Determine a third moment, where the third moment is the time domain position of the first transmission resource among the K1 transmission resources selected during resource selection at the second moment, and K1 is a positive integer greater than or equal to 1;

The first moment is determined between the second moment and the third moment.
The method for determining a resource selection window according to claim 1, wherein the determining the first moment comprises:

Determine a fourth time, where the fourth time is before the first time, and the fourth time is a time for resource selection;

Determine a fifth moment, where the fifth moment is the time domain position of the first transmission resource among the K2 transmission resources selected during resource selection at the fourth moment, and K2 is a positive integer greater than 1;

Determining a sixth time, where the sixth time is the time domain position of the transmission resources other than the first transmission resource among the K2 transmission resources selected during resource selection at the fourth time;

The first time is determined between the fifth time and the sixth time.
The method for determining a resource selection window according to any one of claims 1 to 10, further comprising:

When resource selection is performed in the resource selection window at the first moment, the transmission resources on the time slot where the reserved transmission resources at the first moment are located are excluded.
A device for determining a resource selection window is characterized in that it comprises:

The first moment determining module is configured to determine the first moment, where the first moment is the moment when resource selection is performed;

A reserved resource obtaining module, configured to obtain the reserved transmission resource at the first moment;

The selection window determination module is configured to determine the resource selection window at the first moment according to the time domain position of the reserved transmission resource at the first moment.
The device for determining a resource selection window according to claim 12, wherein the selection window determination module comprises:

The high and low time domain position determining unit is configured to determine the lowest time domain position and the highest time domain position of the reserved transmission resource at the first moment according to the time domain position of the reserved transmission resource at the first moment;

The first selection window determining unit is configured to determine the resource selection window at the first moment according to the lowest time domain position and the highest time domain position.
The device for determining a resource selection window according to claim 12, wherein the selection window determination module comprises:

The first interval parameter determining unit is configured to determine a first interval parameter, where the first interval parameter is used to indicate the maximum time interval between two adjacent transmission resources indicated by the side link control information;

The second selection window determining unit is configured to determine the resource selection window at the first time according to the time domain position of the reserved transmission resource at the first time and the first interval parameter.
The device for determining a resource selection window according to claim 14, wherein the second selection window determining unit comprises:

The first lowest time domain position determining subunit is configured to determine the lowest time domain position of the reserved transmission resource at the first moment according to the time domain position of the reserved transmission resource at the first moment;

The first selection window lower bound determining subunit is configured to determine the lower bound of the resource selection window at the first moment according to a first duration parameter, the lowest time domain position, and the first interval parameter. The first duration parameter is related to the processing delay of the electronic device.
The device for determining a resource selection window according to claim 14, wherein the second selection window determining unit comprises:

The first highest time domain position determining subunit is configured to determine the highest time domain position of the reserved transmission resource at the first moment according to the time domain position of the reserved transmission resource at the first moment;

The first selection window upper bound determining subunit is configured to determine the upper bound of the resource selection window at the first moment according to a second duration parameter, the highest time domain position, and the first interval parameter;

The second duration parameter is related to the delay requirement of the service.
The device for determining a resource selection window according to claim 12, wherein the selection window determination module comprises:

A second interval parameter determining unit configured to determine a second interval parameter, where the second interval parameter represents the maximum time interval between transmission resources indicated by the side link control information;

The third selection window determining unit is configured to determine the resource selection window at the first time according to the time domain position of the reserved transmission resource at the first time and the second interval parameter.
The device for determining a resource selection window according to claim 17, wherein the third selection window determining unit comprises:

The second highest time domain position determining subunit is configured to determine the highest time domain position of the reserved transmission resource at the first time according to the time domain position of the reserved transmission resource at the first time;

A second selection window lower bound determining subunit, configured to determine the lower bound of the resource selection window at the first moment according to a first duration parameter, the highest time domain position, and the second interval parameter;

The first duration parameter is related to the processing delay of the electronic device.
The device for determining a resource selection window according to claim 17, wherein the third selection window determining unit comprises:

The second lowest time domain position determining subunit is configured to determine the lowest time domain position of the reserved transmission resource at the first time according to the time domain position of the reserved transmission resource at the first time;

A second selection window upper bound determining subunit, configured to determine the upper bound of the resource selection window at the first moment according to a second duration parameter, the lowest time domain position, and the second interval parameter;

The second duration parameter is related to the delay requirement of the service.
The device for determining a resource selection window according to claim 12, wherein the first moment determining module comprises:

The second time determining unit is configured to determine a second time, the second time is before the first time, and the second time is the time for resource selection;

The third moment determining unit is configured to determine a third moment, where the third moment is the time domain position of the first transmission resource among the K1 transmission resources selected during resource selection at the second moment, and K1 is greater than Or a positive integer equal to 1;

The first moment determining unit is configured to determine the first moment between the second moment and the third moment.
The device for determining a resource selection window according to claim 12, wherein the first moment determining module comprises:

A fourth time determining unit, configured to determine a fourth time, where the fourth time is before the first time, and the fourth time is a time for resource selection;

The fifth moment determining unit is configured to determine a fifth moment, where the fifth moment is the time domain position of the first transmission resource among the K2 transmission resources selected during resource selection at the fourth moment, and K2 is greater than A positive integer of 1;

The sixth moment determining unit is configured to determine a sixth moment, where the sixth moment is the transmission resource other than the first transmission resource among the K2 transmission resources selected during resource selection at the fourth moment Time domain location

The first moment obtaining unit is configured to determine the first moment between the fifth moment and the sixth moment.
The device for determining a resource selection window according to any one of claims 12 to 21, further comprising:

The resource exclusion module is configured to exclude the transmission resources in the time slot where the reserved transmission resources at the first time are located when selecting resources in the resource selection window at the first time.
An electronic device, characterized in that it comprises a storage unit and a processing unit;

The storage unit is used to store a program for determining a resource selection window;

The processing unit is configured to run a program for determining a resource selection window, and when the program for determining a resource selection window is executed, run the method for determining a resource selection window according to any one of claims 1 to 11.
A readable storage medium, characterized in that it comprises:

Memory, storing the program to determine the resource selection window;

The processor runs a program for determining a resource selection window, and when the program for determining a resource selection window is executed, runs the method for determining a resource selection window according to any one of claims 1 to 11.