CN113518381A

CN113518381A - Resource determination method and device and terminal equipment

Info

Publication number: CN113518381A
Application number: CN202010281203.8A
Authority: CN
Inventors: 董蕾; 苏宏家; 卢磊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2021-10-19
Anticipated expiration: 2040-04-10
Also published as: CN113518381B; WO2021204173A1

Abstract

The application discloses a method, a device and a terminal device for determining resources, wherein the method comprises the following steps: determining a first set of time-frequency resources to be used for transmitting data; monitoring at least two time units corresponding to the first time-frequency resource set; and selecting time-frequency resources for sending data according to the interception result. The method is suitable for the fields of vehicle networking (V2X), intelligent networking, auxiliary driving, intelligent driving and the like, and is used for solving the problem that the existing method for determining resources related to the sidelink in the NR-V2X cannot guarantee the requirements of V2X service time delay, and can effectively reduce the time delay related to the selection of sidelink resources in the existing NR-V2X.

Description

Resource determination method and device and terminal equipment

Technical Field

The present application relates to the field of mobile communications technologies, and in particular, to a method, an apparatus, and a terminal device for determining resources.

Background

In the New Radio (NR) -vehicle to all (V2X), there are two transmission modes (mode) related to the resource allocation of the Sidelink (SL), one is resource mode 1(mode-1) allocated to the base station and the other is user-selected resource mode2 (mode-2). mode-1 is mainly applied to V2X communication under the condition of network coverage, and a base station performs resource allocation centrally according to a Buffer State Report (BSR) reported by a terminal device.

Under the user self-selection resource mode (mode-2), the transmission resource of the UE at the sending end does not depend on the base station, and the UE selects the transmission resource for communication. The mode is not limited to network coverage, and the sending-end UE may also communicate in the absence of network coverage. When a user selects transmission resources, the transmission resources are generally preselected in order to ensure the transmission reliability, and when the user determines that data transmission is needed, the selected transmission resources are used for data transmission; of course, after the user preselects the transmission resource, in view of the situation that the selected transmission resource may be reserved, the prior art further requires performing the resource listening and resource excluding processes again at a set time, and then determining whether the selected transmission resource can be used for data transmission, that is, the UE can only start to reselect the transmission resource at the set time and the reselected transmission resource is very close to the Packet Delay Budget (PDB) of the data in the time domain. For some V2X services with higher latency requirements, the transmission resources selected according to the above prior art cannot guarantee that the transmission of data is completed within a lower latency.

Disclosure of Invention

The embodiment of the application provides a method, a device and terminal equipment for determining resources, which are applicable to the fields of vehicle networking (V2X), intelligent vehicle networking, auxiliary driving, intelligent driving and the like, and are used for solving the problem that the existing method for determining resources related to a sidelink in new wireless (NR) -V2X cannot meet some requirements of V2X service delay.

In a first aspect, a method for determining a first resource is provided, including:

determining a first set of time-frequency resources to be used for transmitting data;

monitoring at least two time units corresponding to the first time-frequency resource set;

and selecting time-frequency resources for sending data according to the interception result.

In the embodiment of the application, after determining the first set of time-frequency resources to be used for transmitting data, listening in at least two time units corresponding to the first set of time and frequency resources (the at least two time units may be before the time unit corresponding to the resource in the first set of time and frequency resources), and performing resource exclusion and resource reselection according to the listening result, because the method provided by the embodiment of the present application listens in at least two time units, i.e. the situation whether a resource in the first set of time resources is reserved or not can be obtained in a number of time units, thereby, when selecting the time-frequency resource for sending data according to the interception result, the reserved resource can be eliminated in time and the time-frequency resource with the processing time meeting the service requirement can be selected, the method can provide sufficient processing time for selecting the time-frequency resources, and simultaneously enables the selected resources to meet the V2X service with higher requirements on time delay.

In an optional implementation manner, before selecting the time-frequency resource for transmitting data, the method may further include excluding any reserved resource in a resource selection window corresponding to at least two time units, and if any reserved resource is a resource in the first time-frequency resource set, triggering the terminal device to select the time-frequency resource for transmitting data within a preset time, so that the implementation of the method in this application may further include:

excluding the first resource according to the interception result; wherein the first resource is included in the first set of time-frequency resources.

In this implementation, if the excluded first resource is in the first set of time-frequency resources, the corresponding trigger terminal device selects the time-frequency resource for sending data according to the listening result. In the implementation manner, if any one of the at least two time units detects that the first resource is excluded, the terminal device is triggered to select the time-frequency resource, so that the available time-frequency resource can be selected in time.

The embodiment of the application is based on at least two time units for interception, so that the interception window corresponding to the time unit can have multiple implementation modes:

in a first mode, each time unit of the at least two time units corresponds to a listening window.

According to the above implementation manner of the time unit and the listening window, in a further implementation manner, the excluding the first resource according to the listening result includes:

and when the first resource is intercepted to be reserved in at least one interception window, excluding the first resource.

Corresponding to the at least two listening windows, the manner of selecting the time-frequency resource for transmitting data according to the listening result may be:

and selecting time-frequency resources for sending data in a resource selection window corresponding to the last time unit of the at least two time units according to the monitoring results of the at least two monitoring windows.

Based on the first listening window setting manner, if the time unit is a time slot, the scheme may be that each time slot n 'of the at least two time units may correspond to a listening window, and the range of the listening window is [ n' -T₀,n′–T_proc，0) (ii) a Wherein, T is₀And T_proc，0The time length of the side link control information SCI corresponds to the UE processing time required by side link control information decoding and resource selection respectively;

correspondingly, the implementation of excluding the first resource may be:

if the first resource is reserved in the time slot n1, a plurality of listening windows [ n-T ] in the time slot n1 are detected according to the current time slot n₀，n–T_proc,0) To [ n 1-T₀,n1–T_proc,0) The resource in the resource selection window corresponding to the time slot n1 is excluded according to the interception result;

when excluding resources in a plurality of listening windows, all resources in the resource selection window are excluded, that is, whether all time-frequency resources available for sending data are reserved by other UEs is judged, and if so, the resources need to be excluded. Of course, if the first resource is reserved, in addition to being excluded as a resource for transmitting data, it may trigger the terminal device to reselect a new resource for transmitting data. And in the resource selection window corresponding to the time slot n1When the resource is excluded, the resource is excluded based on a plurality of interception windows [ n-T ]₀，n–T_proc，0) To [ n 1-T₀，n1–T_proc，0) And summarizing the result of the resource exclusion.

Further, if the first candidate resource R_x1，y1When any one of the plurality of listening windows is judged to be unavailable time-frequency resource for transmitting data (one of the unavailable situations can be SCI reservation transmitted by other UE), the first candidate resource R is set_x，yExcluded from the resource selection unit.

In this embodiment, when the time-frequency resource is selected according to the listening result, the listening results corresponding to the multiple listening windows are summarized in one resource selection window, so that the finally selected time-frequency resource can eliminate the interference of resources occupied by other terminal devices to the greatest extent, and the reliability of data transmission is improved.

In a second mode, the starting time corresponding to the listening window of each of the at least two time units is the same, and the ending time of each listening window is determined by the corresponding time unit. The listening window in this embodiment is to expand the time windows corresponding to the multiple time units, so that the listening time of a single listening window is increased, and at least two time units are covered in the range of the listening window, thereby being able to listen to more and more comprehensive resource occupation information in the listening window.

As in the first mode, listening in the listening window that any resource is reserved may exclude the reserved resource in the corresponding resource selection window, and if based on the implementation of the listening window, correspondingly excluding the first resource according to the listening result, the implementation may be:

and when the first resource is intercepted to be reserved in the target interception window corresponding to the last time unit in the at least two time units, excluding the first resource.

Corresponding to the implementation of the listening window, the implementation of selecting the time-frequency resource for sending data according to the listening result may be:

and selecting a time-frequency resource for sending data in a resource selection window corresponding to the last time unit of the at least two time units according to the interception result of the target interception window.

Based on the second listening window setting mode, if the time unit is a time slot, each time slot n' of the at least two time units corresponds to a listening window [ n-T ]₀，n′–T_proc，0) (ii) a The initial time of the interception window is fixed, and the termination time is determined by the corresponding time slot; that is, the listening duration corresponding to the listening window will change according to the corresponding time slot change. In the listening windows corresponding to a plurality of time slots, the duration of the listening window corresponding to the last time slot is longest.

Correspondingly, the implementation of excluding the first resource may be:

if the first resource is reserved in the time slot n1, according to the listening window [ n-T ]₀，n1–T_proc，0) Corresponding interception results are used for excluding the resources in the resource selection window corresponding to the time slot n 1;

if the second candidate resource R_x2，y2In the listening window n-T₀，n1–T_proc，0) If the time-frequency resource is judged not to be available for sending data, excluding the second candidate resource R from the resource selection window corresponding to the time slot n1_x2，y2。

Because the time of the listening window in this manner covers at least two time units, the resource selection windows corresponding to the listening window may be at least two corresponding to the at least two time units, so that the listening result may cover the time-frequency resource with longer reservation time, and the listening result may more correctly ensure that the finally selected time-frequency resource for transmitting data has higher stability.

In an optional implementation manner, if the first set of time-frequency resources includes multiple resources, selecting, according to the listening result, a time-frequency resource used for sending data includes:

if it is sensed at time unit n1 that the first resource of the plurality of resources is reserved, reselecting the plurality of resources in the resource selection window corresponding to time unit n 1.

In an alternative implementation manner, only a part of the plurality of resources may be reserved, or only the reserved part may be reselected, and then reselecting the plurality of resources in the resource selection window corresponding to the time unit n1 may be:

reselecting the first resource in a resource selection window corresponding to a time unit n1 according to the positions of other resources in the time domain and the maximum distance between the resources indicated by one SCI; wherein the other resources are resources of the plurality of resources other than the second resource.

In an optional implementation manner, the first set of time-frequency resources is a resource reserved periodically, and a time slot m corresponding to the first resource is a time slot corresponding to the first time-frequency domain resource in each period; the method further comprises the following steps:

and determining the at least two time units according to the period of the resources in the first time-frequency resource set as a unit, and when monitoring and resource selection are carried out, if a certain resource in a certain resource period is reserved, reselecting the resource in the resource period, and if the resource is not reserved in the next week, continuing to use the selected periodic resource to carry out data transmission.

In the implementation manner, if the selected resource of any resource period is determined to be reserved according to the monitoring result, the selected resource in any resource period is reselected, and the selected resource of the resource period other than any resource period is not adjusted; therefore, in order to ensure the continuity of the periodic reservation, the identifier indicating that any resource period is the periodic reservation may be adjusted to be the aperiodic reservation.

In a second aspect, a method for resource determination is provided, the method comprising:

a second set of time-frequency resources is selected for transmitting data.

The resource determination method provided in this embodiment is to perform a second time of time-frequency resource selection (i.e., a second set of time-frequency resources) if a situation occurs in which resources in the first time-frequency resources are unavailable after an initial selection of resources (i.e., the first set of time-frequency resources) for transmitting data is initially selected.

In an optional implementation manner, after determining the time-frequency resource set, the method may further listen to the resource occupancy in real time, so as to trigger the selection of the second time-frequency resource set, where the triggering condition may be:

In this embodiment, the selection of the first time-frequency resource set, the selection of the second time-frequency resource, and the exclusion of the resource may all use the schemes provided by various implementation manners in the first aspect; for example: before selecting the second time frequency resource set, setting a plurality of listening windows; and excluding the reserved resources from the plurality of listening windows; and when the second time frequency resource set is selected, selecting according to the monitoring results of the plurality of monitoring windows.

Further, since the first set of time-frequency resources may include multiple resources, if the first resource is excluded, the implementation manner of correspondingly selecting the second set of time-frequency resources for transmitting data may include:

in the first mode, when any resource in the first time-frequency resource set is excluded, it is determined that the first time-frequency resource set is unavailable, and all time-frequency resources used for sending data can be reselected according to the interception result to form a second time-frequency resource set.

In a second manner, the second set of time-frequency resources is fused with the first set of time-frequency resources, that is, the second set of time-frequency resources is selected, wherein the second set of time-frequency resources includes other resources of the plurality of resources except the first resource. If other resources in the first set of time-frequency resources are not reserved after the first resource is excluded, the other resources and the newly selected time-frequency resources can be continuously used to form a second set of time-frequency resources for data transmission.

Certainly, when the first selected resource and the original selected time-frequency resource in the first time-frequency resource set are combined to form the second time-frequency resource, the resource selection condition needs to be met, and the conditions in this embodiment may include a resource time-domain position relationship, a maximum distance between resources that can be indicated by the SCI, a time length that an interval between adjacent resources needs to meet the HARQ processing time, and the like.

In a third aspect, a method for resource determination is provided, the method including:

determining a time-frequency resource set to be used for sending data;

monitoring at least one time unit corresponding to the time frequency resource set;

configuring or selecting a first resource, wherein the first resource is included in the time frequency resource set, and the first resource is a periodic resource;

In an optional implementation manner, if the time-frequency resources used for sending data are periodic (that is, the video resource set includes resources of multiple cycles), the resources are monitored according to each cycle, and the time-frequency resources used for sending data in the current cycle are selected according to the monitoring result, and the time-frequency resources already selected in other cycles in the time-frequency resource set are not adjusted, so if it is determined in the current cycle that the first resource is reserved, after the time-frequency resources used for sending data in the current cycle are selected according to the monitoring result, the method further includes:

configuring a field indicating a cycle length of the cycle resource.

After the first resource is reserved, the time-frequency resource used for sending the data is selected, and the first resource is not selected, so that the period length of the time-frequency resource used for sending the data in the time-frequency resource set is changed, and a field indicating the period length needs to be adjusted correspondingly.

In an alternative embodiment, the field indicating the period length may be Resource reservation period, and if the time-frequency Resource is reselected in the current period, the Resource of the period is no longer periodic, so that the field may be set to 0 to indicate that the period length is 0.

Of course, in the above manner, since the first resource is a periodic resource, it is regarded as an independent resource selection and use process in each resource cycle, so that the resource interception exclusion and reselection operations can be performed on a per resource cycle basis, and the resource interception exclusion and reselection operations can be the same as those of the various implementations provided by the first aspect.

In a fourth aspect, an apparatus for resource determination is provided, including:

a processing module to determine a first set of time-frequency resources to be used for transmitting data;

the transceiver module is used for monitoring at least two time units corresponding to the first time-frequency resource set;

the processing module is further configured to select a time-frequency resource for sending data according to the interception result.

In an optional implementation manner, the processing module is further configured to exclude the first resource according to the interception result; wherein the first resource is included in the first set of time-frequency resources.

In an alternative implementation, each of the at least two time units corresponds to a listening window.

In an alternative implementation manner, the starting time corresponding to the listening window corresponding to each of the at least two time units is the same, and the ending time of each listening window is determined by the corresponding time unit.

In an optional implementation manner, the processing module is specifically configured to exclude the first resource when it is sensed in at least one sensing window that the first resource is reserved.

In an optional implementation manner, the processing module is specifically configured to select, according to the listening results of at least two listening windows, a time-frequency resource for transmitting data in a resource selection window corresponding to a last time unit of the at least two time units.

In an optional implementation manner, the processing module is specifically configured to exclude the first resource when the first resource is listened to be reserved in a target listening window corresponding to a last time unit of the at least two time units.

In an optional implementation manner, the processing module is specifically configured to select, according to the listening result of the target listening window, a time-frequency resource for transmitting data in a resource selection window corresponding to a last time unit of the at least two time units.

In a fifth aspect, an apparatus for resource determination is provided, the apparatus comprising:

a determining unit configured to determine a first set of time-frequency resources to be used for transmitting data;

the determining unit is further configured to select a second set of time-frequency resources for transmitting data.

In an alternative implementation, the first set of time-frequency resources includes a plurality of resources, a first resource of the plurality of resources being reserved; the determining unit is specifically configured to select a second set of time-frequency resources, where the second set of time-frequency resources includes other resources of the multiple resources except the first resource.

In a sixth aspect, an apparatus for resource determination is provided, including:

a determining unit, configured to determine a set of time-frequency resources to be used for transmitting data;

the receiving and sending unit is used for monitoring at least one time unit corresponding to the time frequency resource set;

the processing unit is configured to configure or select a first resource, where the first resource is included in the time-frequency resource set, and the first resource is a periodic resource; and selecting time-frequency resources for sending data according to the interception result.

In a seventh aspect, a terminal device is provided, including:

a processor configured to determine a first set of time-frequency resources to be used for transmitting data;

a transceiver, configured to listen in at least two time units corresponding to the first set of time and frequency resources;

the processor is further configured to select a time-frequency resource for transmitting data according to the listening result.

In an optional implementation manner, the processor is further configured to exclude the first resource according to the interception result; wherein the first resource is included in the first set of time-frequency resources.

In an alternative implementation manner, the starting time corresponding to the listening window of each of the at least two time units is the same, and the ending time of each listening window is determined by the corresponding time unit.

In an optional implementation manner, the processor is specifically configured to exclude the first resource when it is sensed in at least one sensing window that the first resource is reserved.

In an optional implementation manner, the processor is specifically configured to select, according to the listening results of at least two listening windows, a time-frequency resource for transmitting data in a resource selection window corresponding to a last time unit of the at least two time units.

In an optional implementation manner, the processor is specifically configured to exclude the first resource when it is sensed that the first resource is reserved in a target sensing window corresponding to a last time unit of the at least two time units.

In an optional implementation manner, the processor is specifically configured to select, according to a listening result of the target listening window, a time-frequency resource for transmitting data in a resource selection window corresponding to a last time unit of the at least two time units.

The apparatus provided by the above fourth and seventh aspects corresponds to the method provided by the first aspect, and the apparatus provided by the fifth and sixth aspects corresponds to the method provided by the foregoing second and third aspects, respectively, so the beneficial effects of the implementations described in the methods of the above first to third aspects are also applicable to the apparatus of the fourth to seventh aspects. And the implementation details corresponding to the implementation manners of the methods of the first aspect to the third aspect are also applicable to the implementation descriptions of the results of the devices of the fourth aspect to the seventh aspect.

In an eighth aspect, a chip is provided, where the chip includes a processor and a communication interface, and the processor is coupled with the communication interface, and is configured to implement the method provided in any optional implementation manner of the first aspect, the second aspect, the third aspect, and any one of the first aspect to the third aspect.

Optionally, the chip may further include a memory, and for example, the processor may read and execute a software program stored in the memory to implement the method provided in any one of the optional embodiments of the first aspect, the second aspect, the third aspect, and the first aspect to the third aspect. Alternatively, the memory may not be included in the chip, but may be located outside the chip, and the processor may read and execute a software program stored in the external memory, so as to implement the method provided in any one of the optional embodiments of the first aspect, the second aspect, the third aspect, and the first aspect to the third aspect.

A tenth aspect provides a computer-readable storage medium for storing a computer program which, when run on a computer, causes the computer to perform the method as described in any one of the possible implementations of the first, second, third and any one of the above aspects.

In an eleventh aspect, there is provided a computer program product comprising instructions for storing a computer program which, when run on a computer, causes the computer to perform the method as described in any one of the possible implementations of the first, second, third and fourth aspects above.

In a twelfth aspect, a communication apparatus is provided, including: a processor and an interface circuit;

the interface circuit is used for receiving code instructions and transmitting the code instructions to the processor;

the processor is configured to execute the code instructions to perform the method described in any one of the possible implementation manners of the first aspect, the second aspect, the third aspect, and the first aspect to the third aspect.

In the embodiment of the present application, after determining a first time-frequency resource set to be used for sending data, a terminal device listens in at least two time units corresponding to the first time-frequency resource set (the at least two time units may be before the time unit corresponding to the resource in the first time-frequency resource set), and performs resource exclusion and resource reselection according to the result of the listening, because the method provided in the embodiment of the present application listens in at least two time units, that is, it is possible to obtain whether the resource in the first time resource set is reserved in multiple time units, so that when selecting a time-frequency resource for sending data according to the result of the listening, the reserved resource can be excluded in time and a time-frequency resource whose processing time meets the service requirement can be selected, and while providing sufficient processing time for selecting the time-frequency resource, the time delay related to sideline link resource selection in the existing NR-V2X can be effectively reduced, so that the selected resources can meet the V2X service with higher requirement of time delay.

Drawings

FIG. 1 is a schematic diagram of several application scenarios of V2X;

FIG. 2 is a timing diagram illustrating a base station allocating resources to a terminal device at a transmitting end through DCI in a dynamic mode of mode-1;

FIG. 3 is a diagram illustrating frequency domain resources corresponding to a time slot;

FIG. 4 is a schematic diagram of a resource selection window and a resource listening window when a terminal device performs resource selection in mode-2;

FIG. 5 is a diagram illustrating a network architecture according to an embodiment of the present application;

fig. 6 is a flowchart illustrating a method for determining resources according to an embodiment of the present application;

FIG. 7 is a flowchart illustrating an implementation of determining a first set of time/frequency resources;

FIG. 8 is a schematic diagram of multiple listening windows in an embodiment of the present application;

FIG. 9 is a diagram illustrating resource sensing in the prior art;

FIG. 10 is a diagram illustrating implementation of listening by multiple listening windows in an embodiment of the present application;

FIG. 11 is a diagram illustrating an implementation of listening in a listening window according to an embodiment of the present application;

FIG. 12 is a schematic diagram illustrating resource reselection in an embodiment of the present application;

FIG. 13 is a schematic diagram of another resource reselection in an embodiment of the present application;

FIG. 14 is a schematic diagram illustrating periodic resource reselection in an embodiment of the present application;

FIG. 15 is a flowchart illustrating a method for resource determination according to an embodiment of the present application;

FIG. 16 is a flowchart illustrating a method for resource determination according to an embodiment of the present application;

fig. 17 is a schematic structural diagram of an apparatus for resource determination in an embodiment of the present application;

fig. 18 is a schematic structural diagram of a communication device in an embodiment of the present application;

fig. 19 is a schematic block diagram of a terminal device in an embodiment of the present application;

fig. 20 is another schematic block diagram of a terminal device in the embodiment of the present application;

fig. 21 is a further schematic block diagram of a terminal device in an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

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

1) Terminal equipment, including equipment providing voice and/or data connectivity to a user, in particular, including equipment providing voice to a user, or including equipment providing data connectivity to a user, or including equipment providing voice and data connectivity to a user. For example, may include a handheld device having wireless connection capability, or a processing device connected to a wireless modem. The terminal device may communicate with a core network via a Radio Access Network (RAN), exchange voice or data with the RAN, or interact with the RAN. The terminal device may include a User Equipment (UE), a wireless terminal device, a mobile terminal device, a device-to-device communication (D2D) terminal device, a vehicle-to-all (V2X) terminal device, a machine-to-machine/machine-type communication (M2M/MTC) terminal device, an internet of things (internet of things) terminal device, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a remote station (remote station), an access point (access point, AP), a remote terminal (remote), an access terminal (access terminal), a user terminal (user terminal), a user agent (user), or a user equipment (user), etc. For example, mobile telephones (or so-called "cellular" telephones), computers with mobile terminal equipment, portable, pocket, hand-held, computer-included mobile devices, and the like may be included. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. Also included are constrained devices, such as devices that consume less power, or devices that have limited storage capabilities, or devices that have limited computing capabilities, etc. Examples of information sensing devices include bar codes, Radio Frequency Identification (RFID), sensors, Global Positioning Systems (GPS), laser scanners, and the like.

By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable smart device or intelligent wearable equipment etc. is the general term of using wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets, smart helmets, smart jewelry and the like for monitoring physical signs.

The various terminal devices described above, if located on a vehicle (e.g., placed in or installed in the vehicle), may be considered to be vehicle-mounted terminal devices, which are also referred to as on-board units (OBUs), for example.

In this embodiment, the terminal device may further include a relay (relay). Or, it is understood that any device capable of data communication with a base station may be considered a terminal device.

In the embodiment of the present application, the apparatus for implementing the function of the terminal device may be the terminal device, or may be an apparatus capable of supporting the terminal device to implement the function, for example, a chip system, and the apparatus may be installed in the terminal device. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices. In the technical solution provided in the embodiment of the present application, a device for implementing a function of a terminal is taken as an example of a terminal device, and the technical solution provided in the embodiment of the present application is described.

2) Network devices, including, for example, Access Network (AN) devices, such as base stations (e.g., access points), may refer to devices in AN access network that communicate with wireless terminal devices over one or more cells over AN air interface, or, for example, network devices in one type of V2X technology are Road Side Units (RSUs). The base station may be configured to interconvert the received air frame with an Internet Protocol (IP) packet, and serve as a router between the terminal device and the rest of the access network, where the rest of the access network may include an IP network. The RSU may be a fixed infrastructure entity supporting the V2X application and may exchange messages with other entities supporting the V2X application. The network device may also coordinate attribute management for the air interface. For example, the network device may include an evolved Node B (NodeB) or eNB or e-NodeB in an LTE system or an LTE-a (long term evolution-advanced), or may also include a next generation Node B (gNB) in a 5th generation (5G) NR system (also referred to as an NR system) or may also include a Centralized Unit (CU) and a Distributed Unit (DU) in a Cloud access network (Cloud RAN) system, which is not limited in the embodiments.

The network device may also include a core network device including, for example, an access and mobility management function (AMF), etc. Since the embodiments of the present application mainly relate to an access network, unless otherwise specified, all the network devices refer to access network devices.

In the embodiment of the present application, the apparatus for implementing the function of the network device may be a network device, or may be an apparatus capable of supporting the network device to implement the function, for example, a system on chip, and the apparatus may be installed in the network device. In the technical solution provided in the embodiment of the present application, a device for implementing a function of a network device is taken as an example of a network device, and the technical solution provided in the embodiment of the present application is described.

3) V2X, namely, the vehicles are interconnected with the outside, which is the basic and key technology of future intelligent vehicles, automatic driving and intelligent transportation systems. The V2X optimizes the specific application requirements of V2X based on the existing device-to-device (D2D) technology, and needs to further reduce the access delay of the V2X device and solve the problem of resource conflict.

V2X specifically includes several application requirements, such as vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P) direct communication, and vehicle-to-network (V2N) communication interaction. As shown in fig. 1. V2V refers to inter-vehicle communication; V2P refers to vehicle-to-person communication (including pedestrians, cyclists, drivers, or passengers); V2I refers to vehicle to network device communication, such as RSU, and another V2N may be included in V2I, V2N refers to vehicle to base station/network communication.

Among other things, V2P may be used as a safety warning for pedestrians or non-motor vehicles traveling on the road. Through the V2I, the vehicle can communicate with roads and other infrastructures, such as traffic lights, roadblocks and the like, and acquire road management information such as signal timing of the traffic lights. V2V may be used for inter-vehicle information interaction and reminding, and the most typical application is for inter-vehicle anti-collision safety systems. V2N is the most widely used form of car networking, and its main function is to make the vehicle connect to the cloud server through the mobile network, and use the navigation, entertainment, or anti-theft application function provided by the cloud server.

4) The terms "system" and "network" in the embodiments of the present application may be used interchangeably. "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

And, unless stated to the contrary, the embodiments of the present application refer to the ordinal numbers "first", "second", etc., for distinguishing a plurality of objects, and do not limit the size, content, sequence, timing, priority, degree of importance, etc., of the plurality of objects. For example, the first interval and the second interval are only used for distinguishing different time domain intervals, and do not indicate the difference of the length, priority, importance degree, and the like of the two intervals.

The foregoing has described some of the noun concepts to which embodiments of the present application relate, and the following has described some features of the embodiments of the present application.

With the development of wireless communication technology, the demand for high data rate and user experience is increasing, and the demand for proximity services to understand and communicate with people or things around is increasing, so D2D technology is increasing. The application of the D2D technology can reduce the burden of the cellular network, reduce the battery power consumption of the user equipment, increase the data rate, and well meet the requirements of proximity services. The D2D technology allows multiple D2D capable UEs to directly discover and communicate directly with or without network infrastructure. In view of the characteristics and advantages of the D2D technology, a car networking application scenario based on the D2D technology is proposed, but due to safety concerns, the requirement on time delay in such a scenario is very high, and the existing D2D technology cannot achieve the goal.

Therefore, in the LTE network proposed by the 3rd generation partnership project (3 GPP), the car networking technology of V2X is proposed. The V2X communication refers to communication of the vehicle with anything outside, including V2V, V2P, V2I, V2N, and can refer to fig. 1.

The V2X communication is a basic technology and a key technology applied in a scene with a very high requirement on communication delay in the future, such as intelligent automobiles, automatic driving, intelligent transportation systems, and the like, for high-speed devices represented by vehicles. The LTE-V2X communication may support communication scenarios with and without network coverage, and the resource allocation manner may adopt a network access device scheduling mode, such as an evolved universal terrestrial radio access network Node B (E-UTRAN Node B, eNB) scheduling mode and a UE self-selection mode. Based on the V2X technology, the vehicle user equipment (V-UE) can send some information of itself, such as position, speed, or intention (turning, merging, or backing) to other V-UEs in a periodically or non-periodically triggered manner, and likewise, the V-UE receives the information of surrounding users in real time.

With the development of the 5G NR technology in the 3GPP standard organization, the 5G NR-V2X will be further developed, for example, lower transmission delay, more reliable communication transmission, higher throughput, better user experience, etc. can be supported to meet the requirements of wider application scenarios.

In NR-V2X, there are two main modes for resource allocation of sidelink, one is a mode (mode-1) for allocating resources to a base station and the other is a mode (mode-2) for user selection. mode1 is mainly applied to V2X communication under the condition of network coverage, and the base station performs resource allocation intensively according to the BSR reporting condition of the terminal equipment. The allocation of resources in mode-1 may be allocated in a dynamic mode or a pre-configured mode. The resources allocated by the base station comprise initial resources and/or retransmission resources, or comprise the initial resources and the retransmission resources.

In the dynamic mode of mode-1, the base station allocates resources to the transmitting-end terminal device through Downlink Control Information (DCI), and the transmitting-end terminal device receives the DCI and then transmits data to the receiving-end terminal device on the resources. After decoding the data from the sending-end terminal device, the receiving-end terminal device sends feedback information corresponding to the data to the sending-end terminal device, for example, the feedback information is an Acknowledgement (ACK) or a Negative Acknowledgement (NACK), and the sending-end terminal device forwards the feedback information to the base station. Reference is made to fig. 2 for this. In fig. 2, at time t1, the terminal device at the transmitting end receives DCI from the base station and decodes the DCI; at time t2, the sending-end terminal device sends a physical sidelink shared channel (PSCCH) or a Physical Sidelink Control Channel (PSCCH) to the receiving-end terminal device; at time t3, the receiving-end terminal device sends hybrid automatic repeat request (HARQ) information (i.e., feedback information) corresponding to the psch or PSCCH to the sending-end terminal device; at time t4, the transmitting end terminal device forwards the HARQ information to the base station.

In the pre-configured mode of mode-1, the base station configures the relevant time-frequency resources for sidelink transmission through high-layer signaling. The sending end terminal equipment can directly send the side-line data (type) -1) on the resources configured by the high-level signaling; or, the base station may send DCI to activate the configured resource, and after receiving the DCI, the sending-end terminal device may send the sidelink data (type-2) on the configured resource in the higher layer signaling. After receiving the side-line data from the sending terminal equipment, the receiving terminal equipment decodes the side-line data, and then sends HARQ information (i.e. feedback information) of the side-line data to the sending terminal equipment, and the sending terminal equipment forwards the HARQ information from the receiving terminal equipment to the base station.

Under mode-2, the transmission resources of the transmitting end terminal device are not dependent on the base station. The mode is not limited by network coverage, and the sending terminal equipment can communicate in the mode whether the network coverage exists or not. The user-selected resources comprise initial resources or retransmission resources, or comprise the initial resources and the retransmission resources.

In mode-2, the terminal device at the transmitting end automatically selects resources within the resource selection window to transmit data according to the result of resource listening (monitor) in the listening window (the size and the position relationship of the listening window and the resource selection window are fixed in the prior art). Assuming that the sending end terminal triggers resource selection at time slot n, the listening window may be defined as T time slots before the resource selection is triggered. The resource selection window is [ n + T ] after the resource selection trigger₁，n+T₂]The corresponding time slot. The resource selection window comprises a plurality of time slots, and for one time slot, the total number of sub-channels included in the frequency domain resource belonging to the sidelink resource pool corresponding to the time slot is N_subCHFrequency domain resource packet corresponding to the time slotThe subchannel set corresponding to the included subchannel is

A candidate resource R_x,yIs defined to be located in the resource selection window [ n + T _1, n + T _ 2] in the time domain]Time slot belonging to sidelink resource pool

A set of subchannels located at subchannel x + j in the frequency domain, where j is 0_subCH1, i.e. in the frequency domain, length equal to L_subCHSet of consecutive sub-channels of L_subCHThe number of the sub-channels occupied by the PSSCH and the PSCCH corresponding to the data to be transmitted, so that the total number of the candidate resources on each time slot is N_subCH-L_subCH+1. Any set of lengths satisfying the above condition is equal to L_subCHIs considered as a candidate resource R_x，yThe total number of all candidate resources is M_total。

For example, refer to fig. 3, which is a schematic diagram of frequency domain resources corresponding to one timeslot. Boxes 0 to 8 in fig. 3 represent all sidelink subchannels corresponding to one slot, i.e., N_subCHThe 8 subchannels are grouped into a set of subchannels

The number of sub-channels occupied by PSSCH corresponding to data to be transmitted is L_subCH，L_subCHFor example, 2, the total number of candidate resources corresponding to the timeslot is 8-2+1 ═ 7, which is resources 0 to 7 in fig. 3, and the set of the 7 candidate resources corresponding to the timeslot is

The listening window may be defined as n-T₀，n–T_proc,0) Wherein T is₀Configured by the high layer parameter t0_ SensingWindow. The overall process of determining resources by the terminal equipment at the sending end in mode-2 is as follows: the UE at the sending end continuously monitors all belongings in the windowAnd (3) all the remaining time slots except the time slot which is transmitted by the UE at the sending end in the time slot of the sidelink resource pool. And then according to the result of the interception, excluding the candidate resource reserved by other UE from the resource selection window to obtain a resource exclusion result, and then selecting the resource for sending data according to the resource exclusion result, wherein the reservation can be embodied by indicating the candidate resource at the SCI, and when the SCI containing the resource reservation information is intercepted, the reserved resource can be known to be occupied by other UE at a certain future moment.

As shown in fig. 5, in the prior art, to ensure the transmission stability of the reserved resource, the sending UE first performs a resource selection window n + T on the higher layer₁,n+T₂]Time-frequency resources which can be used for sending data are selected internally (for example, three resources R1, R2 and R3 are selected), the time-domain resources are any one of the above candidate resources, and after the sending end UE selects the resources, the two cases are divided into:

in case 1, after selecting a resource, the sending-end UE may not send related information indicating a current resource selection result of other UEs, and if the other UEs do not know the selection of the sending-end UE, the sending-end UE may reserve a selected (pre-selected) resource. The implementation may define the resources selected by the sending-end UE as the pre-selected resources.

In case 2, to prevent resource selection conflicts with other UEs, the transmitting UE may also send an SCI indication of the resources that have been selected. Other UEs can judge the priority of the resource indicated by the SCI by monitoring the SCI sent by the sending end UE, and compare the priority with the priority of the data to be sent. If the priority of the data to be sent by other UEs is higher than the priority indicated by the SCI sent by the sending end UE, the other UEs can reserve the resource reserved by the sending end UE again, that is, the other UEs can preempt (pre-occupation) the resource reserved by the sending end UE. In this implementation, the resource selected by the sending end UE may be defined as a reserved resource.

Since the sending-end UE may not send the relevant information to indicate the current resource selection result of other UEs after selecting resources (the resource selection in this embodiment includes both reservation and pre-selection), in this caseOther UEs may reserve a pre-selected resource for the sending UE; even if the SCI indication resource selection is sent, the selected resource may be preempted by other higher priority UEs. Therefore, in order to prevent the above situation, the transmitting UE needs to perform the resource listening and resource excluding process again before the data transmission time corresponding to each selected resource (R1, R2 and R3), and if it is determined that the selected resource is reserved by other UEs through listening again, the transmitting UE needs to trigger the higher layer to perform resource reselection again, assuming that the time slot corresponding to the first resource R1 is m, and the time slot corresponding to the resource listening and resource excluding process again is n 1-m-T3, i.e. the interval between the transmitting UE and the first resource R1 is T₃Time slot of, T₃The duration of (c) corresponds to the UE processing time required from resource selection to sidelink transmission or the sensing time from initial selection of resources to reselection.

In both cases, i.e. the sending UE sends or does not send the SCI indicating the selected resource, the process of resource sensing, resource exclusion and reselection again for the already selected resource is required, and is collectively referred to as re-evaluation (re-evaluation) herein.

The listening window and the resource selection window corresponding to the re-evaluation of the resource may be defined as n 1-T, respectively₀，n1–T_proc，0) And [ n1+ T1, n1+ T2]. As shown in FIG. 4, assume that the sending UE is in the listening window [ n 1-T ]₀，n1–T_proc，0) If the first resource R1 is also reserved by the SCI (S1) sent by another UE, the UE on the transmitting side needs to trigger the higher layer again to reselect the resource. If the sending UE is in the listening window n 1-T₀，n1–T_proc，0) If no reservation of other UEs to the resource selected by the sending end UE is sensed, the sending end UE can directly perform data transmission on the selected resource.

It can be seen that the prior art only preselects resources at time slots of m-T₃The process of interception and resource exclusion is completed again, namely, the resource interception, the resource exclusion and the resource rearrangement are triggered once at the latest moment which can ensure the processing time of the UE from the resource selection to the sidelink transmissionTherefore, the time delay of the reselection of the corresponding resource selection window is also achieved, that is, the UE can only start to reselect the resource at the latest time and the reselected resource is closer to the PDB of the data in the time domain. Obviously, for some V2X services with higher latency requirements, the resources selected according to the prior art cannot guarantee that the transmission of data is completed within a lower latency.

In view of the above-mentioned problems of the prior art, the present application provides a method of resource determination, in which after determining a first set of time-frequency resources (i.e., pre-selected resources or reserved resources) to be used for transmitting data; monitoring at least two time units corresponding to the first time-frequency resource set; and selecting time-frequency resources for sending data according to the interception result. The interception times are increased, so that the discovery probability of reserved resources is improved, and the reserved resources are prevented from being selected by mistake during reselection; in addition, the selected resource can be timely found to be reserved by other UE, so that the terminal equipment can be timely triggered to reselect, the data transmission can be completed in the resource selection window which is farther away from the PDB as soon as possible, and the time delay can be reduced to the greatest extent.

The technical scheme provided by the embodiment of the application can be applied to a D2D scene, can be an NR D2D scene, an LTE D2D scene and the like, or can be applied to a V2X scene, an NR V2X scene, an LTE V2X scene and the like, for example, can be applied to the field of vehicle networking, such as V2X and LTE-V, V2V, or can be applied to the fields of intelligent driving, intelligent internet networking and the like. Or, the method may also be applied to other scenarios or other communication systems, for example, the method may also be used for resource selection of a Uu interface of an LTE system or an NR system, which is not limited specifically. The network architecture applied in the embodiments of the present application is described below. Please refer to fig. 5, which illustrates a network architecture applied in the present embodiment.

Fig. 5 includes a network device and two terminal devices, a first terminal device and a second terminal device, respectively. Both the two terminal devices can be within the coverage area of the network device; or the two terminal devices may only be the first terminal device within the coverage of the network device and the second terminal device not within the coverage of the network device; or neither of the two terminal devices is within the coverage area of the network device. The two terminal devices can communicate with each other through sidelink. Fig. 5 exemplifies that neither of the two terminal devices is within the coverage of the network device. Of course, the number of terminal devices in fig. 5 is only an example, and in practical applications, the network device may provide services for a plurality of terminal devices.

The network device in fig. 5 is, for example, an access network device, such as a base station. The access network device may correspond to different devices in different systems, for example, may correspond to an eNB in a fourth generation mobile communication technology (4G) system, and may correspond to an access network device in 5G in a 5G system, for example, a gNB, or an access network device in a communication system of subsequent evolution.

The terminal device in fig. 5 is a vehicle-mounted terminal device or a vehicle as an example, but the terminal device in the embodiment of the present application is not limited thereto.

The technical solution provided by the embodiments of the present application is described below with reference to the accompanying drawings.

The embodiment of the present application provides a first method for determining resources, please refer to fig. 6, which is a flowchart of the method. In the following description, the method is applied to the network architecture shown in fig. 5 as an example.

For ease of introduction, in the following, the method is performed as an example by a first terminal device and a second terminal device. Because the present embodiment is exemplified by applying to the network architecture shown in fig. 5, and in addition, the resource determining method provided in the embodiment is to perform resource selection and determination by using a terminal device as a sending end, the method of the embodiment of the present application may be described below by using a first terminal device as the sending end device, where the first terminal device may be the first terminal device in the network architecture shown in fig. 5, or may be a chip system disposed in the first terminal device; the second terminal device described below may be the second terminal device in the network architecture shown in fig. 5, or may be a system-on-chip provided in the second terminal device.

601, a first terminal device determines a first time-frequency resource set to be used for sending data;

the first terminal device first performs resource selection (which may include resource preselection without sending SCI after resource selection, or resource reservation with sending SCI after resource selection), that is, the first terminal device determines the first set of time and frequency resources, where an implementation manner of determining the first set of time and frequency resources may be a process shown in fig. 7, and may be:

step 701, the first terminal device listens to SCIs sent by other terminal devices in the resource pool within the listening window. The listening may include a process of detecting SCI, or may include a process of detecting SCI, decoding SCI, and measuring Reference Signal Receiving Power (RSRP) of the resource according to an indication of SCI.

Step 702, if the intercepted SCI includes resources that have been reserved by other terminal devices, and the reserved resources are located in the resource selection window, excluding the reserved resources; the excluding procedure for excluding the resources reserved by other UEs from the resource selection window is as follows:

1) definition includes all M_totalSet of candidate resources is S_A。

2) If the candidate resource R_x，yWhile satisfying the following condition, the candidate resource R_x，yShould be selected from the set S_AAnd (3) removing:

the first terminal device does not listen to the time slot

I.e. the first terminal device itself is in the time slot

Performing over-transmission;

there is an integer j satisfying y + j × P'_{rsvp_TX}＝m+q×P′_{rsvp_RX}And Q is 1,2, …, Q, j is 1,2, …, C_resel-1，

Is a first terminalThe resource reservation interval of the device is in ms, which is a physical period (which may include a time slot in a non-sidelink resource pool). P'_{rsvp_RX}All physical periods indicated for the higher layer parameter reservationPeriodAllowed

Corresponding logic cycle, if P_{rsvp_RX}≤T_scalAnd n' -m.ltoreq.P_r′svp_RX，

Otherwise, Q is 1. Wherein if slot n belongs to the sidelink resource pool,

otherwise

The first time slot after the time slot n belongs to the sidelink resource pool;

3) if the candidate resource R_x，yWhile satisfying the following condition, the candidate resource R_x，yShould be selected from the set S_AAnd (3) removing:

the first terminal device is in time slot

Receives SCI and decodes P_{rsvp_RX}And prio_RXIn which P is_{rsvp_RX}And prio_RXThe physical period and priority of the PSSCH corresponding to the SCI.

The RSRP measurement result of PSSCH determined by the SCI is greater than threshold Th_{prioTX,prioRX}Wherein the threshold Th_prioT,XprioRA function of the priority corresponding to the data indicated in the received SCI and the priority corresponding to the data to be sent of the first terminal device;

by time slots

Received SCI and expected in

Time frequency resource and candidate resource determined by SCI received by time slot

Where Q is 1,2, …, Q, j is 1,2, …, C_resel-1，P′_{rsvp_TX}Is the physical period of the first terminal equipment

Corresponding logic period, P'_{rsvp_RX}To receive the physical period of the UE

Corresponding logic cycle, if P_{rsvp_RX}≤T_scalAnd n '-m is less than or equal to P'_{rsvp_RX}，

Otherwise, Q is 1. Wherein if slot n belongs to the sidelink resource pool,

otherwise

4) if the candidate resource set S_ALess than M of the remaining candidate resources _total20% of the reference signal, the preset RSRP threshold Th is set_{prioTX,prioRX}Raised by 3dB, repeating steps 1) -4).

5) The first terminal device will set S_AReporting to the high layer, and the high layer collecting S_ATo complete the final resource selection.

For example, referring to fig. 5, the left time window represents a listening window, the right time window represents a resource selection window, UE1 in the listening window represents a resource used by UE1, UE2 represents a resource used by UE2, UE3 represents a resource used by UE3, UE1 in the resource selection window represents a reserved resource of UE1, UE2 represents a reserved resource of UE2, and UE3 represents a reserved resource of UE3, in this scenario, the reserved resources corresponding to UE2 and UE3 in the resource selection window are excluded by the above-mentioned resource exclusion method.

In step 703, the first terminal device reports the candidate resource set remaining after excluding the reserved resource to the upper layer, so that the first terminal device can select a resource from the remaining candidate resources.

Step 704, the high layer receives the candidate resource set from the physical layer, and then selects the final resource for transmitting data.

The number of the sending resources which can be selected by the high layer is MaxTxTransNumSSCH, when MaxTxTransNumSSCH is N_MAXWhen N is present_MAXThe method and the device indicate the maximum number of sidelink resources that can be indicated by a Frequency domain resource allocation field "Frequency resource allocation" and a Time domain resource allocation field "Time resource allocation" in one SCI, wherein one resource is used for current sidelink transmission, and the rest number is used for indicating previous sidelink transmission and/or future reserved sidelink transmission. High level parameter N_MAXWhen 2, the time-frequency resource allocation field in one SCI can only indicate two PSSCH resources at most, when the higher-layer parameter N is_MAXWhen 3, the time-frequency resource allocation field in one SCI can only indicate three psch resources at most. And the direct maximum time domain distance of the two or three resources indicated by the SCI cannot exceed W ═ 32 time slots, that is, the maximum two or three sidelink resources can only be located in the time domain window with the length of 32 time slots and belonging to the sidelink resource pool.

Step 602, listening in at least two time units corresponding to the first set of time and frequency resources;

after the first set of time-frequency resources is selected in step 601, the embodiment of the present application further performs resource interception and resource exclusion at least twice, and both the resource interception and exclusion processes may be implemented as shown in fig. 7.

For example, as shown in fig. 8, in step 601, the first terminal device may trigger resource selection in timeslot n, where the corresponding listening window and resource selection window may be defined as [ n-T0, n-Tp 0 ] and [ n + T1, n + T2], respectively, and the selected resource (i.e., the first set of time-frequency resources) is located in timeslot m;

in step 602, as shown in fig. 8, the first terminal device may listen to SCIs transmitted by other UEs in at least two time units before n2 — m-T3, where in this example, the at least two time units may be each of at least two slots before n2 — m-T3, or may also be at least two slots randomly or periodically selected from a plurality of slots, and this embodiment is not limited in this application, and the interval of the periodic slot may be configured by a higher layer, specifically, by Radio Resource Control (RRC) -dedicated signaling, System Information Block (SIB) message, or preconfiguration.

It is assumed that the SCIs sent by other UEs on the resource S3 in the listening window [ n 1-T0, n 1-TP 0) corresponding to the timeslot n1 indicate that the selected resource is reserved (the occupation in this embodiment refers to: other UEs send SCIs indicating that the selected resource is reserved), the first terminal device may trigger resource reselection at the current time or at a set time after detecting that the selected resource is reserved (an interval between the set time and the current time may be configured by a higher layer, and specifically may be through RRC dedicated signaling, SIB message, or pre-configuration), and the resource reselection does not need to be triggered until the time slot n2 is m-T3. Resource selection windows corresponding to the time slots n1 and n2 are [ n + T1, n + T2] and [ n2+ T1, n2+ T2], respectively, and obviously, the time slot n1 and the corresponding resource selection window [ n1+ T1, n1+ T2] are all more advanced in the time domain than the time slot n2 and the corresponding resource selection window [ n2+ T1, n2+ T2], so that resources reserved by other UEs can be reselected earlier in the earlier resource selection window in the time slot n1, and the earlier resource reselection is started, and the transmission of data is more likely to be completed earlier in the resource selection window farther from the PDB, so as to meet the requirement of time delay.

According to the resource interception and selection process shown in fig. 7, it can be determined that, when the terminal device intercepts the resource, if it is intercepted that another terminal device reserves a certain resource, the terminal device will obtain the final candidate resource set (i.e. the content of interception report) by excluding the resource, so that the first terminal device also excludes any reserved resource in the resource selection window corresponding to each time unit according to the intercepted result;

if the selected resource is reserved by other UE, triggering the first terminal equipment to reselect a time-frequency resource for sending data, namely excluding the first resource according to the interception result; wherein the first resource is included in the first set of time-frequency resources. The first terminal is triggered to perform step 603.

Step 603, selecting time frequency resources for sending data according to the interception result.

In this embodiment of the application, after listening for at least two time units in step 602, the first terminal device may select the time-frequency resource for sending data again according to the listening result. Because the first terminal device may listen to the resources in multiple time units in step 602, the setting manner of the corresponding listening window may include multiple, and the corresponding implementation manner of selecting the time-frequency resource according to the listening result also corresponds to the same, and the specific implementation may be:

first, as shown in the prior art of FIG. 9, other terminal devices are in the first listening window [ n-T ]₀n-TP 0) indicates the first resource selection window [ n + T1, n + T2]And a second resource selection window [ n1+ T1, n1+ T2]The resource R2 of the overlapping part of (a) is reserved by other UEs. I.e., based on the results of the first listening window [ n-T0, n-TP 0), R2 needs to be selected from the first resource selection window [ n + T1, n + T2]]Internal exclusion, and based on the results of the second listening window [ n 1-T0, n 1-TP 0), it is not necessary to select R2 from the second resource selection window [ n1+ T1, n1+ T2]]And (4) internal exclusion. Therefore, when performing resource reselection, if reporting is performed only according to the result of the second resource selection window, part of the resources that should be excluded may be missed.

Aiming at the problem that the current interception window can miss the reservation condition (or called as resource occupation condition) of part of resources by other UE, the embodiment of the application can summarize the interception results of a plurality of interception windows (the interception result refers to the resource exclusion condition in the resource window corresponding to each interception window), and can also be understood as summarizing the results of a plurality of resource selection windows, thereby increasing the time coverage of interception, avoiding missing some resource occupation conditions, and the specific implementation can be as follows:

each of the at least two time units corresponds to a listening window. According to the corresponding relationship between the time unit and the listening window, the resource exclusion can be realized by:

removing any candidate resource in all candidate resource sets in the corresponding resource selection window according to the interception result corresponding to each interception window; if the resource 1 in the resource selection window is intercepted in the interception window 1 and reserved by other UE, the resource 1 is excluded; and records the result of resource 1 being excluded for that listening window. Namely, the condition of all the excluded candidate resources in the resource selection window corresponding to each listening window is recorded.

Of course, in this embodiment, the first resource that has been selected by the first terminal may also be reserved by other terminals, and the first resource is excluded according to the listening result:

the specific implementation manner of excluding any candidate resource (including the first resource) is as follows: excluding the candidate resource when it is sensed in at least one sensing window that the arbitrary candidate resource is reserved.

And after each listening window excludes the resource, recording a listening result (that is, the condition that the resource in each listening window is excluded), summarizing the listening result of at least one listening window, and then selecting a time-frequency resource for sending data according to the summarized listening result, wherein the specific implementation manner may be:

In this embodiment, when selecting the time-frequency resource according to the listening result, the resource exclusion conditions corresponding to the listening windows are summarized in the last resource selection window corresponding to the time units, for example: the resource R1 is excluded in the first listening window, the resource R2 is excluded in the second listening window, and the resource R3 is excluded in the third listening window; even if the need to exclude R1, R2, and R3 is not sensed in the last sensing window, R1, R2, and R3 are excluded in the last resource selection window by way of this example. The finally selected time-frequency resource can eliminate the interference of other terminal equipment occupying resources to the maximum extent, and the reliability of data transmission is improved.

If the first terminal device completes the first resource selection in time slot n, m-T may be equal to n2₃The listening window [ n ' -T0, n ' -TP 0 ] of at least two randomly or periodically selected time slots n ' in each previous time slot or a plurality of time slots listens to SCIs transmitted by other UEs, that is, resource listening for a plurality of time units is realized by using a listening window of a fixed length, which can be regarded as resource listening for a plurality of time units is realized by sliding the listening window of the fixed length as time increases. As shown in fig. 10, if it is sensed in a certain timeslot n1 that other UEs have reserved part or all of the resources selected by the first terminal device, the resource reselection may be triggered at that time, and a resource candidate resource R is determined in a resource selection window corresponding to the last timeslot unit according to sensing results commonly obtained in a plurality of sensing windows [ n-T0, n-TP 0) to [ n 1-T0, n 1-TP 0) from the timeslot n to the timeslot n1_x，y(the resource may be any resource available for transmitting data that appears in the resource selection window) whether it needs to be excluded, in particular, if a candidate resource R is available_x，yIf the listening result of any one of the listening windows is determined to be reserved by (or occupied by) another UE, i.e. not available for data transmission of the first terminal device, then the resource selection window [ n1+ T1, n2+ T2] is required]Resource R_x，yAnd (4) excluding. The above reselection process may also be triggered at a set time after detecting that the selected resource is reserved.

When the corresponding first terminal selects resources, the resources excluded by any one of the plurality of listening windows do not appear in the resource selection windows [ n1+ T1, n2+ T2 ]; the embodiment of the application combines a plurality of interception windows to jointly judge whether a certain resource needs to be eliminated, so that the interference of other UE occupying the resource can be eliminated to the maximum extent, and the reliability of data transmission is improved.

In a second mode, the starting time corresponding to the listening window corresponding to each of the at least two time units is the same, and the ending time of each listening window is determined by the corresponding time unit. The listening window in this embodiment is to adjust the duration of the corresponding window according to the time corresponding to the multiple time units, for example, the time windows may be gradually increased, so that the listening time of each listening window is different, and the target listening window corresponding to the last time unit of the at least two time units covers the time of the listening window corresponding to each time unit of the at least two time units, so that more comprehensive resource occupation information can be listened in the last listening window.

In the same way as the first method, when the target listening window corresponding to the last time unit senses that any candidate resource is reserved, the reserved resource may be excluded in the corresponding resource selection window, and the resource exclusion may be performed:

selecting a monitoring result of a target monitoring window corresponding to the last time unit in at least two time units, and eliminating candidate resources in a resource selection window corresponding to the last time unit; since the target listening window can listen to the resource exclusion condition of each of the at least two time units, the resource exclusion is performed according to the listening result of the listening window, and then the condition of all excluded resources in the at least two time units can be determined.

Of course, in this embodiment, the first resource that has been selected by the first terminal may also be reserved by other UEs, and the specific implementation corresponding to excluding the first resource according to the listening result may be:

Corresponding to the implementation manner of the above listening window, the implementation manner of selecting the time-frequency resource for sending data according to the listening result may be:

Because the time of the target listening window in the method covers at least two time units, the listening duration corresponding to the target listening window can cover at least two time units, so that the listening result can cover the time-frequency resource with longer reservation time, and the listening result can more accurately ensure that the finally selected time-frequency resource for sending data has higher stability.

If the first terminal device listens to SCIs transmitted by other UEs in a listening window n-T0, n '-TP 0 randomly or periodically selected at least two slots n' in each slot or a plurality of slots before n 2-m-T3 after the first time resource selection is completed in slot n (i.e., the first set of time frequency resources is determined), the initial time (i.e., the lower bound) of the listening window is unchanged in this example, while the termination time (i.e., the upper bound) of the sliding listening window increases as time increases, and the length of the listening window increases as the listening time increases. As shown in fig. 11, if some or all resources selected by the first terminal are sensed by other UEs in a timeslot n1, the first terminal device is triggered to determine the resource selection window [ n1+ T1, n2+ T2) according to the sensing window [ n-T0, n 1-TP 0)]In a certain resource R_x,y(the resource may be any resource in the resource selection window, and is not limited to only the resource selected by the first terminal device) or not. In this example, one listening window may cover a plurality of time units (at least two time slots n') randomly or periodically selected from each time slot or a plurality of time slots before m-T3), so that all resource occupation situations between the resource selection time and the time when the selected resource is reserved may be listened to without intermission in this example, so that occupation situations of all resources can be acquired more accurately and comprehensively, and the stability of the finally selected resource for transmitting data is high.

In the method provided by the embodiment of the present application, the listening may be performed on multiple time units before the data is sent using the selected resource, so that the first terminal device can start resource reselection as early as possible, and complete data transmission in the resource selection window farther from the PDB as early as possible, thereby reducing the delay to the greatest extent.

In addition, based on the interception implementation mode that a plurality of time units correspond to a plurality of interception windows, whether resources in a certain resource selection window need to be eliminated can be judged by combining the plurality of interception windows, interference of resources occupied by other UE can be eliminated to the greatest extent, and reliability of data transmission is improved.

Based on the method steps shown in fig. 6, after the first time-frequency resource set is determined in step 601 (it may also be understood that the first time resource is selected, or referred to as preselection or reservation of a resource), if the first resource in the first time-frequency resource set is reserved by another terminal device before the first resource in the first time-frequency resource set is used, the terminal device may be triggered to reselect the resource in step 603 to implement data transmission, and of course, before the resource reselection in step 603 is implemented, exclusion of resources reserved by another terminal device may also be implemented by listening, where the exclusion operation may be performed on any resource in a resource selection window corresponding to each time unit (the exclusion operation of a specific resource uses the manner described in the above method). For the resources selected in step 601 and step 603, if the first set of time-frequency resources in step 601 includes a plurality of resources, and the first resource is only one or a part of the plurality of resources, the implementation manner when performing resource reselection in step 603 may further include:

mode a1, in step 603, regardless of the reserved condition of the resources in the first resource set, if the first terminal triggers resource reselection, the first terminal selects resources from the time-frequency resources available for transmitting data for transmission according to the listening result.

As shown in fig. 12, the first set of time-frequency resources selected by the first terminal device in time slot n includes resources R1, R2 and R3, and continues to listen for SCIs transmitted by other UEs from after time slot n, and if it is sensed that other UEs have reserved resource R2 in time slot n1, the first terminal device is triggered to reselect all resources for transmitting data (R4, R5 and R6).

The implementation method is applicable to a resource preselection scenario in which the SCI is not sent to indicate the preselection of resources, because the first terminal device does not send the SCI and other UEs do not know the resource selection condition of the first terminal device, the first terminal device can freely reselect all resources, and in the resource reselection process, the result of the first time-frequency resource set does not need to be reserved, and the resource reselection does not need to be performed under the limitation of the first time-frequency resource set, so that the resource reselection can be performed more quickly, efficiently and with higher freedom.

In the manner a2, when one of the resources in the first resource set is reserved, and the time-frequency resource is selected again in step 603, one resource is selected from the time-frequency resources available for sending data according to the listening result to perform data transmission of the reserved resource.

As shown in fig. 13, if the first terminal device selects the resources R1, R2 and R3 in the time slot n and continues to listen to the SCIs sent by other terminal devices after the time slot n, if it is sensed that the other terminal devices have reserved the resource R2 in the time slot n1, the first terminal device only reselects the resource R2 (for example, selects the resource R4 after reselection), and the resources R1 and R3 that are not reserved by other UEs do not need to be reselected;

since the reselection resource R4 needs to realize the transmission of data together with R1 and R3, the resource R4 needs to satisfy the condition of resource selection. The conditions may be: (1) the position of the resource R4 in the time domain with the resources R1 and R3 meets the conditions specified by the protocol; (2) the time domain and/or frequency domain distance between the resources R1, R4 and R3 satisfies the maximum time domain and/or frequency domain distance of the resources that can be indicated by one SCI, (3) the time domain distance between two consecutive resources should be greater than or equal to the minimum processing delay of HARQ retransmission; for example, R4 and R1 are two consecutive resources, the time-domain distance between R4 and R1 is greater than or equal to the minimum processing delay of HARQ retransmission.

The scheme provided by the manner a2 is applicable to the resource reservation scenario where the sent SCI indicates the preselected resource, because the first terminal device has sent the SCI and the other UEs have determined the resource selection of the first terminal device, the first terminal device does not need to reselect all resources, so as to avoid over-reservation and waste of resources.

Through the implementation manner provided by the embodiment of the application, under two scenes that resources are pre-selected by an unsent SCI indication and reserved by a sent SCI indication, two schemes of fully reselecting all resources and only reselecting the reserved resources are provided. The invention does not limit the specific use scenes of the two schemes, and any one of the schemes can be used in each scene. Aiming at the requirements of different scenes, the process of resource reselection is simplified, the problem of resource waste caused by over reservation is solved, and the overall design of the mode2 mechanism is further improved.

Further, for the periodic service, the first terminal device may further select the corresponding periodic resource to implement data transmission in the periodic service when selecting the resource, and after selecting the time-frequency resource set including the periodic resource for the periodic service, since all the resources are used periodically, when the periodic reservation is enabled (enabled), the resource that has been selected in the upcoming period should be re-evaluated before each period. Therefore, the method provided in this embodiment of the present application may use the resource selected in each period of the periodic resources (one or more resources may be selected in one period) as a unit for initial selection and reselection of the resource, and the resource selected in each period is all independently processed and does not affect reselection and use of resources selected in other periods, that is, after the first set of time-frequency resources is determined in step 601, according to the period of the periodic resources, listening is performed at least two time units before the resource selected in each period, and when the selected resource is reselected according to a result of the listening, the method only operates on the resource selected in one period, which may be regarded as a method for repeatedly performing the above steps 601 to 603 for each period, and a specific implementation may be:

if the selected resource in each period is located in time slot m (where each period may have one or more selected resources), then SCIs sent by other UEs may be sensed in at least two randomly or periodically selected time slots in each or more time slots before n2 ═ m-T3 (where m is the time slot corresponding to the selected resource in the period) in each period, if it is sensed that other UEs reserve part or all of the preselected resources, the resource is excluded from the resource selection window, and at the current time, or at a set time after the selected resource is detected to be reserved, the resource reselection is triggered. Since the resource selection window during the resource reselection is later in time than the initial resource selection window, the reselected resource is later in time than the initial resource selection window with a high probability. The requirement of time delay is ensured.

In this example, since the time-frequency resources for transmitting data are periodic, the resources selected in each period are monitored, and it is determined whether to reselect the time-frequency resources for transmitting data in the next period according to the monitoring result, and the time-frequency resources already selected in all periods after the next period are not adjusted, so if it is determined that the resources selected in the next period are reserved, only the time-frequency resources for transmitting data in the next period are reselected according to the monitoring result;

the field indicating the length of the period also needs to be adjusted because only the resources selected in the next period are reselected and the resources already selected in all periods after the next period are not changed. Here, the field indicating the period length may be Resource reservation period, and when data and/or control messages are transmitted on the reselected Resource in the next period after only the selected Resource in the next period is reselected, the field "Resource reservation period" (Resource reservation period) indicating the period length in the SCI may be set to 0, indicating that the period length of the Resource is 0.

By the method provided by the embodiment of the application, the time delay can be reduced to a greater extent, and the periodic reservation can be temporarily interrupted.

As shown in fig. 14, it is assumed that the first terminal device selects a set of periodic resources R1#1 (corresponding to cycle #1), R1#2 (corresponding to cycle #2), R1#3 (corresponding to cycle #3) … at slot n. And resource R1#2 is reserved by SCI S1 transmitted by other UEs. When the selected resource R1#1 is re-evaluated, reservations of resource R1#2 by other UEs have been detected, but at this time reselection of resource R1#2 is not triggered. Only when resource R1#2 is reevaluated will a reselection of resource R1#2 be triggered. Assume that the reselected resource is R2#1, located in period # 2. The first terminal device continues reselection evaluation of the previously selected resource R1#3, R1#4 …. And when the UE transmits data and/or control messages on Resource R2#1 reselected within the period #2, it will set the field "Resource reservation period" (Resource reservation period) in the SCI to zero, i.e. notify other UEs that the first terminal device only reselects Resource R2#1, and the reselection of Resource R2#1 does not mean that a new set of periodic resources R2#1, R2#2, R2#3 … is selected. The first terminal device will continue to re-evaluate the previously reserved resources R1#3, R1#4 … for the next time and if no reservation of the selected resource by other UEs is detected, perform data transmission on the selected resource R1#3, R1#4 ….

Therefore, by the method provided by the embodiment of the application, the cumulative delay effect of the resources R2#2 and R2#3 … in the time domain caused by the reselected resource being located in the resource selection window later in time can be avoided.

Examples

As shown in fig. 15, an embodiment of the present application further provides another method for determining a resource, where the method may specifically include the following implementation steps:

step 1501, determining a first set of time-frequency resources to be used for transmitting data;

step 1502 selects a second set of time-frequency resources for transmitting data.

In this embodiment, the selection of the first time-frequency resource set, the selection of the second time-frequency resource set, and the exclusion of resources may all use the schemes provided by various implementation manners in the first aspect; for example: before selecting the second time frequency resource set, setting a plurality of listening windows; and excluding the reserved resources from the plurality of listening windows; and when the second time frequency resource set is selected, selecting according to the monitoring results of the plurality of monitoring windows.

Further, since the first set of time-frequency resources may include a plurality of resources, when the first resource is excluded, the implementation manner of selecting the second set of time-frequency resources for transmitting data may include:

in the first mode, when any one resource in the first time-frequency resource set is excluded, it is determined that the first time-frequency resource set is unavailable, and all time-frequency resources used for sending data can be reselected according to the interception result to form a second time-frequency resource set.

In a second manner, the second set of time-frequency resources may include resources in part of the first set of time-frequency resources, that is, after the first resource is excluded, other resources in the first set of time-frequency resources that are not reserved may continue to be used, and the other resources that are not reserved may form the second set of time-frequency resources together with the reselected time-frequency resources for data transmission.

Certainly, when the reselected resource and the time-frequency resource that is not reserved in the first time-frequency resource set jointly form the second time-frequency resource set, it needs to meet a proper resource selection condition, and the condition in this embodiment may be: (1) the positions of the resources in the second time-frequency resource set on the time domain meet the conditions specified by the protocol; (2) the time domain and/or frequency domain distance between the resources in the second set of time frequency resources satisfies the maximum time domain and/or frequency domain distance of the resources that can be indicated by one SCI, (3) the time domain distance between two consecutive resources in the second set of time frequency resources should be greater than or equal to the minimum processing delay of the HARQ retransmission.

Examples

As shown in fig. 16, an embodiment of the present application further provides another method for determining a resource, where the method may specifically include the following implementation steps:

step 1601, determining a time-frequency resource set to be used for sending data;

step 1602, listening in at least one time unit corresponding to the time-frequency resource set;

step 1603, configuring or selecting a first resource, wherein the first resource is included in the time-frequency resource set and is a periodic resource;

and 1604, selecting time-frequency resources for sending data according to the interception result.

the field indicating the length of the period also needs to be adjusted because only the resources selected in the next period are reselected and the resources already selected in all periods after the next period are not changed. Here, the field indicating the period length may be a Resource reservation period field in the SCI, and when data and/or control messages are transmitted on the reselection Resource in the next period after only the selected Resource in the next period is reselected, the field indicating the period length in the SCI "Resource reservation period" (Resource reservation period) may be set to 0, which indicates that the period length of the Resource is 0.

The resource sensing and reselection in this example are the same as those in the embodiment corresponding to fig. 14, and are not described here again.

As shown in fig. 17, an apparatus for determining resources is further provided in an embodiment of the present application, where the apparatus 1700 may include:

a processing module 1701 for determining a first set of time-frequency resources to be used for transmitting data;

a transceiver module 1702, configured to listen in at least two time units corresponding to the first set of time and frequency resources;

the processing module 1701 is further configured to select a time-frequency resource for sending data according to the listening result.

The functions of the processing module 1701 and the transceiver module 1702 shown in fig. 17 described above may be performed by a program read in a memory by a processor or may be performed by the processor alone.

Alternatively, when the apparatus for resource determination is running, the processing module 1701 and the transceiver module 1702 may execute the method flows executed by the first terminal device in S601-S603 shown in fig. 6; or to perform a method flow performed by the terminal device in steps 701-704 shown in fig. 7, for example.

It should be noted that the transceiver module 1702 may include different communication units, which respectively correspond to different communication interfaces.

For detailed description of functions or operations performed by the resource determining apparatus provided in the present application, reference may be made to steps performed by scheduling terminal equipment in an embodiment of the method of the present application, which are not described herein again.

Based on the above embodiments, as shown in fig. 18, the present application provides a communication apparatus, which may be a terminal device, including a processor 1800, a memory 1801, and a communication interface 1802.

The processor 1800 is responsible for managing the bus architecture and general processing, and the memory 1801 may store data used by the processor 1800 in performing operations. The communication interface 1802 is used to receive and transmit data from and to communicate data with the memory 1801 under the control of the processor 1800.

The processor 1800 may be a Central Processing Unit (CPU), a Network Processor (NP), or a combination of CPU and NP. The processor 1800 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), a General Array Logic (GAL), or any combination thereof. The memory 1801 may include: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The processor 1800, the memory 1801, and the communication interface 1802 are coupled to one another. Optionally, the processor 1800, the memory 1801 and the communication interface 1802 may be connected to each other through a bus 1803; the bus 1803 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 18, but this does not mean only one bus or one type of bus.

Specifically, the processor 1800 is configured to read a program in the memory 1801 and execute a method flow executed by the first terminal device in S601-S603 shown in fig. 6; or to perform a method flow performed by the terminal device in steps 701-704 shown in fig. 7, for example; or to perform a method flow, for example, as performed by the terminal device in steps 1501-1502 shown in fig. 15; or to perform a method flow performed by the terminal device in steps 1601-1604 shown in fig. 16, for example.

An embodiment of the present application further provides a device for determining resources, where the device includes:

a selecting unit configured to select a second set of time-frequency resources for transmitting data.

In an alternative implementation, the first set of time-frequency resources includes a plurality of resources, a first resource of the plurality of resources being reserved; the selecting unit is specifically configured to select a second set of time-frequency resources, where the second set of time-frequency resources includes other resources of the multiple resources except the first resource.

An embodiment of the present application further provides another apparatus for determining resources, including:

the monitoring unit is used for monitoring at least one time unit corresponding to the time frequency resource set;

a configuration unit, configured to configure or select a first resource, where the first resource is included in the time-frequency resource set, and the first resource is a periodic resource;

and the selection unit is used for selecting the time-frequency resource for sending the data according to the interception result.

The apparatus for resource determination described above corresponds to the method described in fig. 6 to 15, so the implementation and corresponding beneficial effects described in the above method are also applicable to the apparatus embodiment.

The above description mainly introduces the scheme provided in the embodiment of the present application from the perspective of the terminal device. It is understood that, in order to implement the above functions, the terminal device may include a corresponding hardware structure and/or software module for performing each function. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the terminal device may be divided into the functional units according to the above method example, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The embodiment of the application also provides a terminal device, and the terminal device can be a circuit. The terminal device may be configured to perform the actions performed by the first terminal device in the above-described method embodiments.

Fig. 19 shows a simplified schematic diagram of a terminal device. For easy understanding and illustration, in fig. 19, the terminal device is exemplified by a mobile phone. As shown in fig. 19, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds of terminal devices may not have input/output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 19. In an actual end device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

In the embodiment of the present application, an antenna and a radio frequency circuit having a transceiving function may be regarded as a transceiving unit of a terminal device (the transceiving unit may be a functional unit, and the functional unit is capable of implementing a transmitting function and a receiving function, or the transceiving unit may also include two functional units, which are respectively a receiving unit capable of implementing a receiving function and a transmitting unit capable of implementing a transmitting function), and a processor having a processing function may be regarded as a processing unit of the terminal device. As shown in fig. 19, the terminal device includes a transceiving unit 1910 and a processing unit 1920. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. A processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, or the like. Optionally, a device used for implementing the receiving function in the transceiving unit 1910 may be regarded as a receiving unit, and a device used for implementing the sending function in the transceiving unit 1910 may be regarded as a sending unit, that is, the transceiving unit 1910 includes a receiving unit and a sending unit. A transceiver unit may also sometimes be referred to as a transceiver, transceiving circuitry, or the like. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like. A transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

It should be understood that the transceiving unit 1910 is configured to perform the transmitting operation and the receiving operation on the terminal device side in the above method embodiments, and the processing unit 1920 is configured to perform other operations besides the transceiving operation on the terminal device in the above method embodiments.

For example, in one implementation, the processing unit 1920 may be configured to perform all operations performed by the first terminal device in the embodiment shown in fig. 6, except transceiving operations, such as steps 601-603, and/or other processes for supporting the techniques described herein. The transceiving unit 1910 may be used for all transceiving operations performed by the first terminal device in the above embodiments, or for other processes supporting the techniques described herein.

For another example, in one implementation, the processing unit 1920 may be configured to perform all operations performed by the first terminal device in the embodiments shown in fig. 15 or fig. 16, except transceiving operations, such as steps 1501 to 1502, 1601 to 1604, and/or other processes for supporting the techniques described herein. Transceiving unit 1910 may be configured to perform all transceiving operations performed by the first terminal device in the embodiments shown in fig. 15 and 16, or other processes to support the techniques described herein.

The terminal device provided in this embodiment may also refer to the device shown in fig. 20. As an example, the apparatus may perform functions similar to the processing module 1701 and the transceiver module 1702 of fig. 17. In fig. 20, the apparatus includes a processor 2010, a transmit data processor 2020, and a receive data processor 2030. The processing module 1701 in the above embodiments may be the processor 2010 in fig. 20 and perform corresponding functions; the transceiver module 1702 in the above embodiments may be the sending data processor 2020 and/or the receiving data processor 2030 in fig. 20, and performs the corresponding functions. Alternatively, the processing module 2010 in the above embodiment may be the processing module 2010 in fig. 20, and perform the corresponding functions; although fig. 20 shows a channel encoder and a channel decoder, it is understood that these blocks are not limitative and only illustrative to the present embodiment.

Fig. 21 shows another form of the present embodiment. The processing device 2100 includes modules such as a modulation subsystem, a central processing subsystem, and peripheral subsystems. The communication device in this embodiment may serve as a modulation subsystem therein. In particular, the modulation subsystem may include a processor 2102, an interface 2104. The processor 2102 performs the functions of the processing module 1701, and the interface 2104 performs the functions of the transceiver module 1702. As another variation, the modulation subsystem includes a memory 2106, a processor 2102, and a program stored on the memory 2106 and executable on the processor, and the processor 2102 implements the method on the terminal device side in the above method embodiment when executing the program. It should be noted that the memory 2106 may be non-volatile or volatile, and may be located within the modulation subsystem or within the processing device 2100, as long as the memory 2106 is coupled to the processor 2102.

It should be understood that the processor mentioned in the embodiments of the present application may be a CPU, and may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It will also be appreciated that the memory referred to in the embodiments of the application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM, enhanced SDRAM, SLDRAM, Synchronous Link DRAM (SLDRAM), and direct rambus RAM (DR RAM).

It should be noted that when the processor is a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, the memory (memory module) is integrated in the processor.

It should be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method for resource determination, comprising:

2. The method of claim 1, wherein the method further comprises:

3. The method of claim 2, wherein each of the at least two time units corresponds to a listening window.

4. The method of claim 2, wherein the listening window for each of the at least two time units has a same starting time and the terminating time for each listening window is determined by the corresponding time unit.

5. The method of claim 3, wherein excluding the first resource according to the listening result comprises:

excluding the first resource when it is sensed that the first resource is reserved in at least one sensing window.

6. The method of claim 5, wherein selecting time-frequency resources for transmitting data according to the listening result comprises:

7. The method of claim 4, wherein excluding the first resource according to the listening result comprises:

8. The method of claim 7, wherein selecting time-frequency resources for transmitting data according to the listening result comprises:

9. A method of resource determination, the method comprising:

a second set of time-frequency resources is selected for transmitting data.

10. The method of claim 9, wherein the first set of time-frequency resources comprises a plurality of resources, a first resource of the plurality of resources being reserved;

wherein the selecting a second set of time-frequency resources for transmitting data comprises:

selecting a second set of time-frequency resources, wherein the second set of time-frequency resources comprises other resources of the plurality of resources except the first resource.

11. A method for resource determination, comprising:

determining a time-frequency resource set to be used for sending data;

configuring a first resource, wherein the first resource is included in the time frequency resource set and is a periodic resource;

12. An apparatus for resource determination, comprising:

13. The apparatus of claim 12, wherein the processing module is further configured to exclude a first resource based on the listening result; wherein the first resource is included in the first set of time-frequency resources.

14. The apparatus of claim 13, wherein each of the at least two time units corresponds to a listening window.

15. The apparatus of claim 13, wherein the listening window for each of the at least two time units has a same starting time and the terminating time for each listening window is determined by the corresponding time unit.

16. The apparatus of claim 14, wherein the processing module is specifically configured to exclude the first resource when it is sensed in at least one sensing window that the first resource is reserved.

17. The apparatus according to claim 16, wherein the processing module is specifically configured to select, according to the listening results of at least two listening windows, a time-frequency resource for transmitting data in a resource selection window corresponding to a last time unit of the at least two time units.

18. The apparatus according to claim 15, wherein the processing module is specifically configured to exclude the first resource when it is sensed that the first resource is reserved in a target sensing window corresponding to a last time unit of the at least two time units.

19. The apparatus according to claim 18, wherein the processing module is specifically configured to select, according to the listening result of the target listening window, a time-frequency resource for transmitting data in a resource selection window corresponding to a last time unit of the at least two time units.

20. An apparatus for resource determination, the apparatus comprising:

21. The apparatus of claim 20, wherein the first set of time-frequency resources comprises a plurality of resources, a first resource of the plurality of resources being reserved; the determining unit is specifically configured to select a second set of time-frequency resources, where the second set of time-frequency resources includes other resources of the multiple resources except the first resource.

22. An apparatus for resource determination, comprising:

the processing unit is configured to configure a first resource, where the first resource is included in the time-frequency resource set, and the first resource is a periodic resource; and selecting time-frequency resources for sending data according to the interception result.

23. A terminal device, comprising:

24. The terminal device of claim 23, wherein the processor is further configured to exclude a first resource based on the listening result; wherein the first resource is included in the first set of time-frequency resources.

25. The terminal device of claim 24, wherein each of the at least two time units corresponds to a listening window.

26. The terminal device of claim 25, wherein the starting time for each listening window for each of the at least two time units is the same, and the ending time for each listening window is determined by the corresponding time unit.

27. The terminal device of claim 25, wherein the processor is configured to exclude the first resource when it is sensed in at least one sensing window that the first resource is reserved.

28. The terminal device according to claim 26, wherein the processor is specifically configured to exclude the first resource when it is sensed that the first resource is reserved in a target sensing window corresponding to a last time unit of the at least two time units.

29. A communications apparatus, comprising: a processor and a memory;

the memory for storing a computer program;

the processor configured to execute a computer program stored in the memory to cause the communication device to perform the method of any one of claims 1 to 11.

30. A communications apparatus, comprising: a processor and an interface circuit;

the processor for executing the code instructions to perform the method of any one of claims 1 to 11.

31. A readable storage medium storing instructions that, when executed, cause the method of any one of claims 1 to 11 to be implemented.