CN113518381B

CN113518381B - Resource determination method and device and terminal equipment

Info

Publication number: CN113518381B
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: 2023-11-14
Anticipated expiration: 2040-04-10
Also published as: WO2021204173A1; CN113518381A

Abstract

The application discloses a method, a device and terminal equipment for determining resources, wherein the method comprises the following steps: determining a first set of time-frequency resources to be used for transmitting data; listening is carried out on at least two time units corresponding to the first time-frequency resource set; and selecting a time-frequency resource for transmitting data according to the interception result. The method provided by the application is suitable for the fields of Internet of vehicles (vehicle to everything, V2X), intelligent network connection, auxiliary driving, intelligent driving and the like, is used for solving the problem that the method for determining the resources of the related side links in the traditional NR-V2X can not ensure the time delay requirements of some V2X services, and can effectively reduce the time delay of the related side link resources in the traditional 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

There are two transmission modes (modes) for resource allocation with Guan Cehang links (SL) in the New Radio (NR) -car-to-car (vehicle to everything, V2X), one for base station allocation resource mode 1 (mode-1) and one for user-selected resource mode 2 (mode-2). The mode-1 is mainly applied to V2X communication under the condition of network coverage, and the base station performs resource allocation in a centralized way according to a buffer status report (buffer state report, BSR) reported by the terminal equipment.

In the user self-selection resource mode (mode-2), the transmission resource of the sending end UE is not dependent on the base station, and the UE selects the transmission resource for communication. The mode is not limited to network coverage, and the transmitting UE can communicate in this mode without network coverage. When a user selects transmission resources, in order to ensure the transmission reliability, the transmission resources are generally preselected, and when the user determines that data transmission is required, the selected transmission resources are used for data transmission; of course, after preselecting the transmission resources, the prior art also requires that the resource listening and resource exclusion process be performed again at a set time in view of the fact that the selected transmission resources may be reserved, and then determining whether the selected transmission resources are available for data transmission, i.e. the UE can only start to reselect the transmission resources at the set time and the reselected transmission resources are temporally close to the packet delay budget (packet delay buget, PDB) of the data. For V2X services with higher requirements on some time delays, the transmission resources selected according to the above prior art cannot guarantee that data transmission is completed in a lower time delay.

Disclosure of Invention

The embodiment of the application provides a method, a device and terminal equipment for determining resources, which are suitable for the fields of Internet of vehicles (vehicle to everything, V2X), intelligent network coupling, auxiliary driving, intelligent driving and the like and are used for solving the problem that the method for determining the resources of a related side uplink in the existing New Radio (NR) -V2X cannot meet the time delay requirements of some V2X services.

In a first aspect, a method for providing a first resource determination includes:

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

listening is carried out on at least two time units corresponding to the first time-frequency resource set;

and selecting a time-frequency resource for transmitting data according to the interception result.

In the embodiment of the application, after determining the first time-frequency resource set to be used for transmitting data, the terminal equipment listens in at least two time units corresponding to the first time-frequency resource set (the at least two time units can be before the time unit corresponding to the resource in the first time-frequency resource set), and performs resource elimination and resource reselection according to the interception result.

In an optional implementation manner, before selecting the time-frequency resource for transmitting data, the method may further include excluding any reserved resource in the 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 in a preset time, so that the implementation of the method of the present 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 a time-frequency resource for transmitting data according to the interception result. In this 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 perform selection of the time-frequency resource, so that the available time-frequency resource can be timely selected.

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

In a first manner, each of the at least two time units corresponds to a listening window.

According to the 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 detected to be reserved in at least one listening window, the first resource is excluded.

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

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

Based on the first listening window setting mode, if the time unit is a time slot, the scheme may be that each time slot n 'in the at least one two time units may correspond to a listening window, where the range of the listening window is [ n' -T ] ₀ ,n′–T _proc,0 ) The method comprises the steps of carrying out a first treatment on the surface of the Wherein the T is ₀ And T _proc,0 The duration of (2) corresponds to the UE processing time required by decoding and resource selection of the side uplink control information SCI respectively;

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

If the first resource is monitored to be reserved in the time slot n1, a plurality of interception windows [ n-T ] from the current time slot n to the time slot n1 ₀ ,n–T _proc,0 ) To [ n1-T ] ₀ ,n1–T _proc,0 ) The interception result of the resource selection window corresponding to the time slot n1 is eliminated;

when the resources are excluded from the multiple listening windows, an exclusion judgment is performed on all the resources in the resource selection window, that is, whether all the time-frequency resources available for transmitting data are reserved by other UEs is judged, and if reserved by other UEs, the resources need to be excluded. Of course, if the first resource is reserved, besides being excluded from being a resource that cannot be used for transmitting data, the terminal device is triggered to reselect a new resource for transmitting data. When resource is excluded from the resource selection window corresponding to the slot n1, the resource is excluded based on a plurality of listening windows [ n-T ] ₀ ,n–T _proc,0 ) To [ n1-T ] ₀ ,n1–T _proc,0 ) And summarizing the result of the resource elimination.

Further, if the first candidate resource R _x1,y1 The first candidate resource R is determined to be unavailable for the time-frequency resource for transmitting data in any one of the plurality of listening windows (one of the unavailable conditions may be SCI reservation transmitted by other UEs) _x,y Excluded from the resource selection unit.

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

In a second manner, the start time corresponding to the listening window in each of the at least two time units is the same, and the end time of each listening window is determined by the corresponding time unit. In the listening window in this embodiment, the time windows corresponding to the plurality of time units are extended, 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, so that more comprehensive resource occupation information can be sensed in the listening window.

In the same manner as the first manner, when any reserved resource is intercepted in the interception window, the reserved resource can be removed in the corresponding resource selection window, and if based on the interception window implementation manner, the corresponding implementation manner of removing the first resource according to the interception result can be:

And when the first resource is detected to be reserved in the target interception window corresponding to the last time unit in the at least two time units, the first resource is excluded.

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

and selecting time-frequency resources for transmitting data in a resource selection window corresponding to the last time unit in 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' in the at least two time units corresponds to one listening window [ n-T ] ₀ ,n′–T _proc,0 ) The method comprises the steps of carrying out a first treatment on the surface of the The initial time of the listening window is fixed, and the termination time is determined by the corresponding time slotThe method comprises the steps of carrying out a first treatment on the surface of the I.e. the listening time length corresponding to the listening window will vary according to the corresponding time slot variation. And in the interception windows corresponding to the time slots, the interception window duration corresponding to the last time slot is longest.

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

if the first resource is monitored to be reserved in the time slot n1, the first resource is reserved according to the monitoring window [ n-T ] ₀ ,n1–T _proc,0 ) The corresponding interception result is that the resources in the resource selection window corresponding to the time slot n1 are eliminated;

if the second candidate resource R _x2,y2 In the listening window [ n-T ] ₀ ,n1–T _proc,0 ) If the time-frequency resource is judged not to be available for transmitting 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 interception window covers at least two time units in the mode, the resource selection window corresponding to the interception window can be at least two corresponding to at least two time units, so that the interception result can cover the time-frequency resource with longer reservation time, and the interception result can 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 a plurality of resources, selecting the time-frequency resources for transmitting data according to the interception result includes:

if the first resource in the plurality of resources is detected to be reserved in the time unit n1, the plurality of resources are reselected in a resource selection window corresponding to the time unit n 1.

In an optional implementation manner, only a part of the plurality of resources is reserved, or only the reserved part is reselected, and the reselection of 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 of the resources which can be indicated by one SCI; wherein the other resources are resources other than the second resource among the plurality of resources.

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

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 interception 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 reserved condition of the resource does not occur in the next week, continuing to transmit data by using the selected periodic resource.

In the implementation manner, if the selected resource of any resource period is reserved according to the interception result, the selected resource of any resource period is reselected, and the selected resource of the resource periods outside the any resource period is not adjusted; therefore, the reselection operation on the periodic resources only affects a certain resource period, so that in order to ensure the continuity of the periodic reservation, the identification indicating that any resource period is the periodic reservation can be adjusted to be the non-periodic reservation.

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

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

The resource determining method provided in this embodiment is to perform the second time-frequency resource selection (i.e., the second time-frequency resource set) if the resource in the first time-frequency resource is not available after the initial selection of the initially selected resource (i.e., the first time-frequency resource set) for transmitting data.

In an optional implementation manner, the method may further monitor the resource occupation situation in real time after determining the time-frequency resource set, so as to trigger and select the second time-frequency resource set, where a triggering condition may be:

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

Further, since the first set of time-frequency resources may include a plurality of resources, in a case where the first resources are excluded, then the implementation manner of selecting the second set of time-frequency resources for transmitting data correspondingly may include:

in the first mode, if 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 transmitting data can be reselected according to the interception result to form a second time-frequency resource set.

In a second mode, the second time-frequency resource set is fused with the first time-frequency resource, that is, the second time-frequency resource set is selected, wherein the second time-frequency resource set includes other resources except the first resource in the plurality of resources. If other resources in the first time-frequency resource set are not reserved after the first resources are eliminated, the second time-frequency resource set can be formed by continuing to use and newly selecting the time-frequency resources for data transmission.

Of course, 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 the resource time domain position relationship, the maximum distance of the resources that can be indicated by the SCI, and the interval between adjacent resources to meet the HARQ processing duration.

In a third aspect, a method of resource determination is provided, the method comprising:

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

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

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

In an alternative implementation, if the time-frequency resource used for transmitting data is periodic (i.e. the video resource set includes resources of multiple periods), the resource is intercepted according to each period, and the time-frequency resource of transmitting data in the current period is reselected according to the interception result, and the time-frequency resource already selected in other periods in the time-frequency resource set is not adjusted, so if it is determined that the first resource is reserved in the current period, after selecting the time-frequency resource of transmitting data in the current period according to the interception result, the method further includes:

a field is configured indicating a period length of the periodic resource.

After the first resource is reserved, the first resource is not selected when the time-frequency resource for transmitting the data is selected, so that the period length of the time-frequency resource for transmitting the data in the time-frequency resource set is changed, and the corresponding field for indicating the period length is adjusted.

In an alternative embodiment, the field indicating the period length may be Resource reservation period, and if the time-frequency resource is reselected during the current period, the resource of the period is no longer periodic, so 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 procedure in each resource period, and thus the snoop-elimination and reselection operations of the resource may be performed on a per resource period basis, and the snoop-elimination and reselection operations of the resource may be the same as the various implementations provided in the first aspect.

A fourth aspect provides an apparatus for resource determination, comprising:

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

the receiving and transmitting 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 transmitting data according to the interception result.

In an alternative implementation, 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, 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 alternative implementation, the processing module is specifically configured to exclude the first resource when it is detected that the first resource is reserved in at least one listening window.

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

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

In an optional implementation manner, the processing module 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.

In a fifth aspect, there is provided an apparatus for resource determination, 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 plurality of resources than the first resource.

In a sixth aspect, an apparatus for determining resources is provided, including:

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

the receiving and transmitting 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 a time-frequency resource for transmitting data according to the interception result.

A seventh aspect provides a terminal device, including:

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

a transceiver, configured to monitor at least two time units corresponding to the first time-frequency resource set;

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

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

In an alternative implementation, the processor is specifically configured to exclude the first resource when it is detected that the first resource is reserved in at least one listening window.

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

In an optional implementation manner, the processor is specifically configured to exclude the first resource when detecting that the first resource is reserved in a target listening window corresponding to a last time unit in 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 in the fourth and seventh aspects correspond to the method provided in the first aspect, and the apparatus provided in the fifth and sixth aspects correspond to the method provided in the second and third aspects, respectively, so that the advantageous effects of the implementation manner described in the methods of the first to third aspects are equally applicable to the apparatus of the fourth to seventh aspects. And the specific implementation details corresponding to the implementation manners of the methods of the first aspect to the third aspect are equally applicable to the specific implementation descriptions of the device results of the fourth aspect to the seventh aspect.

An eighth aspect provides a chip comprising a processor and a communication interface, the processor being coupled to the communication interface for implementing the method provided by the above-mentioned first aspect, second aspect, third aspect and any optional implementation of the first aspect to third aspect.

Optionally, the chip may further include a memory, for example, the processor may read and execute a software program stored in the memory, to implement the method provided by the optional implementation of any of the first aspect, the second aspect, the third aspect, and the first to third aspects. Alternatively, the memory may be located outside the chip, rather than within the chip, and the processor may read and execute a software program stored in the external memory, so as to implement the method provided by the foregoing first aspect, second aspect, third aspect, and any optional implementation manner of the first aspect to third aspect.

In a tenth aspect, a computer readable storage medium is provided for storing a computer program which, when run on a computer, causes the computer to perform the method as described in the first aspect, the second aspect, the third aspect and any one of the possible implementation manners of the first aspect to the third aspect.

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

In a twelfth aspect, there is provided a communication apparatus comprising: a processor and 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 as described in the first aspect, the second aspect, the third aspect, and any possible implementation manner of the first aspect to the third aspect.

In the embodiment of the application, after determining the first time-frequency resource set to be used for transmitting data, the terminal equipment listens in at least two time units corresponding to the first time-frequency resource set (the at least two time units can be before the time unit corresponding to the resource in the first time-frequency resource set), and performs resource elimination and resource reselection according to the interception result, because the method provided by the embodiment of the application listens in at least two time units, namely, the condition that whether the resource in the first time-frequency resource set is reserved or not can be obtained in a plurality of time units, when the time-frequency resource for transmitting data is selected according to the interception result, the reserved resource can be eliminated timely, the time-frequency resource with the processing time meeting the service requirement can be selected, and the time-frequency resource can be selected to provide sufficient processing time, so that the time delay of the selection of the related side-link resource in the existing NR-V2X can be effectively reduced, and the selected resource can meet the V2X service with higher requirement of time delay.

Drawings

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

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

fig. 3 is a schematic diagram of a frequency domain resource corresponding to one time slot;

FIG. 4 is a 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 schematic diagram of a network architecture to which embodiments of the present application are applied;

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

FIG. 7 is a flow chart of an implementation of determining a first set of time-frequency resources;

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

FIG. 9 is a diagram of resource interception in the prior art;

fig. 10 is a schematic diagram of implementing interception by a plurality of interception windows according to an embodiment of the present application;

fig. 11 is a schematic diagram of implementing interception by an interception window according to an embodiment of the present application;

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

FIG. 15 is a flowchart of a method for determining resources according to an embodiment of the present application;

FIG. 16 is a flowchart of a method for determining resources according to an embodiment of the present application;

FIG. 17 is a schematic diagram of a device for determining resources according to an embodiment of the present application;

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

fig. 21 is a schematic block diagram of a terminal device according to 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 more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

In the following, some terms in the embodiments of the present application are explained for easy understanding by those skilled in the art.

1) Terminal devices, including devices that provide voice and/or data connectivity to a user, specifically, devices that provide voice to a user, or devices that provide data connectivity to a user, or devices that provide voice and data connectivity to a user. For example, may include a handheld device having wireless connectivity, or a processing device connected to a wireless modem. The terminal device may communicate with the core network via a radio access network (radio access network, RAN), exchange voice or data with the RAN, or interact voice and data with the RAN. The terminal device may include a User Equipment (UE), a wireless terminal device, a mobile terminal device, a device-to-device (D2D) terminal device, a vehicle-to-all (vehicle to everything, V2X) terminal device, a machine-to-machine/machine-type communication (M2M/MTC) terminal device, an internet of things (internet of things, ioT) terminal device, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a remote station, an Access Point (AP), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), or a user equipment (user device), etc. For example, mobile telephones (or "cellular" telephones) computers with mobile terminal devices, portable, pocket, hand-held, computer-built mobile devices, and the like may be included. Such as personal communication services (personal communication service, PCS) phones, cordless phones, session initiation protocol (session initiation protocol, SIP) phones, wireless local loop (wireless local loop, WLL) stations, personal digital assistants (personal digital assistant, PDAs), and the like. But also limited devices such as devices with lower power consumption, or devices with limited memory capabilities, or devices with limited computing capabilities, etc. Examples include bar codes, radio frequency identification (radio frequency identification, RFID), sensors, global positioning systems (global positioning system, GPS), laser scanners, and other information sensing devices.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device or an intelligent wearable device, and is a generic name for intelligently designing daily wear and developing wearable devices, such as glasses, gloves, watches, clothes, shoes, and the like, by applying wearable technology. The 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 can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.

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

In the embodiment of the application, the terminal equipment can also comprise a relay. Or it is understood that all that is capable of data communication with a base station can be seen as a terminal device.

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

2) A network device, for example comprising AN Access Network (AN) device, such as a base station (e.g. AN access point), may refer to a device in the access network that communicates over the air with a wireless terminal device through one or more cells, or a network device in a V2X technology is, for example, a Road Side Unit (RSU). The base station may be configured to inter-convert the received air frames with internet protocol (internet protocol, IP) packets as a router between the terminal device and the rest of the access network, which may include an IP network. The RSU may be a fixed infrastructure entity supporting V2X applications, which may exchange messages with other entities supporting V2X applications. The network device may also coordinate attribute management for the air interface. For example, the network device may include an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in an LTE system or advanced long term evolution (long term evolution-advanced, LTE-a), or may also include a next generation node B (next generation node B, gNB) in a fifth generation mobile communication technology (the 5th generation,5G) NR system (also simply 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 radio access network, cloud RAN) system, and embodiments of the present application are not limited.

The network device may also comprise a core network device comprising, for example, access and mobility management functions (access and mobility management function, AMF) or the like. The embodiment of the application mainly relates to an access network, so that the network devices refer to access network devices unless otherwise specified hereinafter.

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

3) V2X is the interconnection and intercommunication between the vehicle and the outside, which is the foundation and key technology of future intelligent vehicles, automatic driving and intelligent transportation systems. The V2X optimizes the specific application requirements of the V2X based on the existing device-to-device (D2D) technology, so that the access delay of the V2X device needs to be further reduced, and the problem of resource conflict is solved.

V2X specifically includes several application requirements such as vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), direct communication between vehicles and pedestrians (V2P), and communication interactions between vehicles and networks (V2N). As shown in fig. 1. V2V refers to communication between vehicles; V2P refers to vehicle-to-person (including pedestrians, cyclists, drivers, or passengers) communication; V2I refers to the communication of the vehicle with a network device, such as an RSU, and another V2N may be included in the V2I, V2N refers to the communication of the vehicle with a base station/network.

Wherein, V2P can be used as a safety warning for pedestrians or non-motor vehicles on the road. Through V2I, the vehicle can communicate with roads and even other infrastructures, such as traffic lights, roadblocks and the like, and road management information such as traffic light signal time sequences and the like is obtained. V2V can be used as an inter-vehicle information interaction and reminder, most typically for use in an inter-vehicle collision avoidance safety system. V2N is the most widely used form of internet of vehicles at present, and its main function is to connect vehicles to a cloud server through a mobile network, and use application functions such as navigation, entertainment, or theft prevention provided by the cloud server.

4) The terms "system" and "network" in embodiments of the application may be used interchangeably. "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). 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 plural.

And, unless otherwise indicated, the terms "first," "second," and the like according to the embodiments of the present application are used for distinguishing a plurality of objects, and are not used for limiting the size, content, order, timing, priority, importance, or the like of the plurality of objects. For example, the first interval and the second interval are only for distinguishing between different time domain intervals, and are not indicative of the difference in length, priority, importance, or the like of the two intervals.

The foregoing has described some of the concepts related to the embodiments of the present application, and the following describes some of the features related to the embodiments of the present application.

With the development of wireless communication technology, there is an increasing demand for high data rates and user experiences, while there is an increasing demand for proximity services for knowing and communicating with surrounding people or things, so D2D technology has grown. The application of the D2D technology can reduce the burden of a cellular network, reduce the battery power consumption of user equipment, improve the data rate and well meet the requirement of proximity services. D2D technology allows multiple D2D enabled UEs to conduct direct discovery and direct communication with or without network infrastructure. In view of the characteristics and advantages of the D2D technology, a vehicle networking application scenario based on the D2D technology is proposed, but due to concerns about security, the requirement on time delay in the scenario is very high, and the existing D2D technology cannot be realized.

Thus, V2X internet of vehicles technology was proposed under the network of LTE technology proposed by the third generation partnership project (the 3rd generation partnership project,3GPP). V2X communication refers to communication of the vehicle with anything from the outside, including V2V, V2P, V2I, V2N, see fig. 1.

V2X communication is a basic technology and a key technology applied to high-speed equipment represented by vehicles in the scene with very high requirements on communication delay in the future, such as intelligent automobiles, automatic driving, intelligent transportation systems and the like. The LTE-V2X communication may support communication scenarios with and without network coverage, and the resource allocation may be performed in 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 V2X technology, a vehicle user equipment (V-UE) can send some information of itself, such as information of position, speed, or intention (turning, doubling, or reversing), to other V-UEs in a periodic or aperiodic trigger manner, and similarly, the V-UE will also receive information of surrounding users in real time.

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

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

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

In the mode-1 pre-configured mode, the base station will configure the associated time-frequency resources for side-uplink transmission through higher layer signaling. The transmitting terminal device may directly transmit sidestream data (type) -1 on a resource configured by higher layer signaling; or, the base station may send DCI to activate the configured resource, and after receiving the DCI, the transmitting end terminal device may send side line data (type-2) on the resource configured by the higher layer signaling. After receiving the sidestream data from the transmitting terminal device, the receiving terminal device decodes the sidestream data, and then sends the HARQ information (i.e. feedback information) of the sidestream data to the transmitting terminal device, and the transmitting terminal device forwards the HARQ information from the receiving terminal device to the base station.

In mode-2, the transmission resources of the transmitting end terminal device are independent of the base station. The mode is not limited to network coverage, and the transmitting-end terminal device can communicate in the mode regardless of whether there is network coverage. The user-selected resources include initial resources or retransmission resources, or both.

Under mode-2, the transmitting-end terminal device selects resources within the resource selection window by itself to transmit data according to the result of resource interception (monitor) in the interception window (the size and positional relationship of the interception window and the resource selection window are fixed in the related art). Assuming that the transmitting end terminal device triggers the resource selection in time slot n, the listening window may be defined as T time slots before the resource selection trigger. The resource selection window is [ n+T ] after the triggering of the resource selection ₁ ,n+T ₂ ]Corresponding time slots. 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 resources belonging to the sidelink resource pool corresponding to the time slot is N _subCH The frequency domain resource corresponding to the time slot comprises a sub-channel set corresponding to the sub-channel as followsCandidate resource R _x,y Is defined as being located in the time domain in the resource selection window [ n+T_1, n+T_2 ]]Time slot belonging to the sidelink resource pool +.>A set of subchannels located at subchannels x+j in the frequency domain, where j=0,.. _subCH -1, i.e. embodied in the frequency domain as a length equal to L _subCH Is a set of consecutive subchannels, L _subCH For the number of sub-channels occupied by PSSCH and PSCCH corresponding to data to be transmitted, the total number of candidate resources in each time slot is N _subCH -L _subCH +1. Any one of the combinations meeting the above conditions has a length equal to L _subCH Are all considered as a candidate resource R _x,y The total number of all candidate resources is M _total 。

For example, referring to fig. 3, a schematic diagram of frequency domain resources corresponding to one time slot is shown. Blocks 0-8 in FIG. 3 represent all of the sidelink subchannels corresponding to a slot, i.e., N _subCH =8, the set of sub-channels corresponding to the 8 sub-channels isThe number of sub-channels occupied by PSSCH corresponding to data to be transmitted is L _subCH ，L _subCH For example, 2, the total number of candidate resources corresponding to the time slot is 8-2+1=7, and the resources 0 to 7 in fig. 3 are the set of 7 candidate resources corresponding to the time slot is ∈>

The listening window may be defined as [ n-T ] ₀ ,n–T _proc,0 ) Wherein T is ₀ Configured by the high-level parameter t0_sensing window. The process of resource determination by the transmitting terminal equipment under mode-2 is generally as follows: the transmitting end UE continuously monitors all the time slots belonging to the sidelink resource pool in the window except the time slots transmitted by the transmitting end UE. And then removing the candidate resources reserved by other UE from the resource selection window according to the interception result to obtain a resource removal result, and selecting the resources for transmitting data according to the resource removal result, wherein the reservation can be embodied by indicating the candidate resources at the SCI, and when the SCI containing the resource reservation information is intercepted, the reserved resources can be known to be possibly occupied by other UE at a certain moment in the future.

In the prior art, as shown in FIG. 5, in order to ensure pre-runAbout the transmission stability of the resources, the higher layer of the UE at the transmitting end firstly selects a window [ n+T ] in the resources ₁ ,n+T ₂ ]Time-frequency resources (for example, three resources R1, R2 and R3) which can be used for transmitting data are selected, wherein the time-domain resources are any one of the candidate resources, and after the transmitting end UE selects the resources, the time-domain resources are divided into two cases:

In case 1, the transmitting UE may not transmit the related information indicating the current resource selection result of other UEs after selecting the resource, and the other UEs may reserve the resource selected (pre-selected) by the transmitting UE without knowing the selection of the transmitting UE. The implementation may define the resources selected by the sender UE as preselected resources.

In case 2, to prevent resource selection collision with other UEs, the transmitting UE may also transmit a SCI indicating the already selected resources. Other UE can judge the priority of the resource indicated by the SCI by monitoring the SCI sent by the UE at the sending end and compare the priority with the priority of the data to be sent. If the priority of the data to be transmitted by other UEs is higher than the priority indicated by the SCI transmitted by the transmitting end UE, the other UEs can reserve the reserved resources of the transmitting end UE, i.e. the other UEs can preempt (pre-transmission) the reserved resources of the transmitting end UE. In this implementation, the resource selected by the sender UE may be defined as a reserved resource.

Since the transmitting UE may not transmit the relevant information indicating the current resource selection result of other UEs after selecting the resources (the selected resources in this embodiment include both reserved and preselected cases), in this case, other UEs may reserve the resources that the transmitting UE has preselected (pre-selected); even if SCI is sent indicating resource selection, the selected resources may be preempted by other higher priority UEs. Therefore, in order to prevent the occurrence of the above situation, the transmitting UE needs to perform the resource interception and resource exclusion again before the time of the data transmission corresponding to each of the selected resources (R1, R2 and R3), and if the re-interception determines that the selected resource has been reserved by other UEs, it needs to trigger the higher layer again to perform the reselection of the resource, assuming that the time slot corresponding to the first resource R1 is m, the resource interception and resource exclusion are performed again The time slot corresponding to the source excluding procedure is n1=m-T3, i.e. is spaced from the first resource R1 by T ₃ Time slot, T of ₃ The duration of (a) corresponds to the UE processing time required from the resource selection to the sidelink transmission or the listening time from the initial selection to the reselection selection of the resource.

In both cases, i.e. the sending UE sends or does not send SCI to indicate the selected resource, the process of resource interception, resource removal and reselection needs to be performed again on the already selected resource, which is herein collectively referred to as reselection evaluation (re-evaluation).

The listening window and the resource selection window corresponding to the re-evaluation of the resources can be defined as [ n1-T ], respectively ₀ ,n1–T _proc,0 ) And [ n1+T1, n1+T2 ]]. As shown in fig. 4, it is assumed that the transmitting UE is in the listening window [ n1-T ] ₀ ,n1–T _proc,0 ) If the SCI (S1) sent by other UEs is heard and the first resource R1 is reserved, the sending UE needs to trigger the higher layer to reselect the resource again. If the transmitting UE is in the listening window [ n1-T ] ₀ ,n1–T _proc,0 ) And if reservation of the selected resources of the UE at the transmitting end by other UEs is not detected, the UE at the transmitting end can directly transmit data on the selected resources.

It can be seen that the prior art is m-T only in time slots after preselecting resources ₃ The process of interception and resource elimination is finished again, namely, the interception of resources is triggered once at the latest moment of the UE processing time required by the transmission from the resource selection to the sidelink, and the resource elimination and the resource reselection are carried out, so that the resource selection window corresponding to the reselection is also delayed in time, namely, the UE can only start to reselect the resources at the latest moment and the reselected resources are closer to the PDB of the data in the time domain. Obviously, for V2X services with higher requirements for some delays, the resources selected according to the prior art cannot guarantee that the transmission of data is completed within a lower delay.

In view of the foregoing problems of the prior art, an embodiment of the present application provides a method for determining resources, in an embodiment of the present application, after determining a first set of time-frequency resources (i.e., preselected resources or reserved resources) to be used for transmitting data; interception is carried out on at least two time units corresponding to the first time-frequency resource set; and selecting a time-frequency resource for transmitting data according to the interception result. The number of interception times is 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, because the selected resources can be more timely found to be reserved by other UE, the terminal equipment can be timely triggered to reselect, and the data transmission is completed in the resource selection window far away from the PDB as early as possible, so that the time delay can be reduced to the greatest extent.

The technical scheme provided by the embodiment of the application can be applied to D2D scenes, NR 2D scenes, LTE D2D scenes and the like, or can be applied to V2X scenes, NR V2X scenes, LTE V2X scenes and the like, for example, can be applied to the Internet of vehicles, for example, V2X, LTE-V, V2V and the like, or can be applied to the fields of intelligent driving, intelligent network coupling and the like. Or may also be applied to other scenarios or other communication systems, for example, but not limited to, resource selection of Uu interface of LTE system or NR system. The network architecture to which the embodiments of the present application are applied is described below. Please refer to fig. 5, which illustrates a network architecture according to an embodiment of the present application.

Fig. 5 includes a network device and two terminal devices, a first terminal device and a second terminal device, respectively. Both terminal devices may be within the coverage of the network device; or the two terminal devices may be only the first terminal device within the coverage area of the network device and the second terminal device not within the coverage area of the network device; or neither terminal device is within the coverage area of the network device. The two terminal devices can communicate through a sidelink. Fig. 5 exemplifies that neither of the two terminal devices is in the coverage area of the network device. Of course, the number of terminal devices in fig. 5 is merely an example, and in practical applications, the network device may serve multiple 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, eNB in a fourth generation mobile communication technology (the 4th generation,4G) system, access network device in 5G in a 5G system, for example, a gNB, or an access network device in a communication system that is evolved later.

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

The technical scheme provided by the embodiment of the application is described below with reference to the accompanying drawings.

An 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, this method is taken as an example applied to the network architecture shown in fig. 5.

For convenience of description, hereinafter, this method is performed by the first terminal device and the second terminal device as an example. Since the present embodiment is exemplified by the network architecture shown in fig. 5, and in addition, since the resource determination method provided in the embodiment is that the terminal device as the transmitting end performs the selection determination of the resource, the method of the embodiment of the present application may be described hereinafter by using the first terminal device as the transmitting 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 provided 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 chip system provided in the second terminal device.

Step 601, a first terminal device determines a first set of time-frequency resources to be used for transmitting data;

the first terminal device first performs resource selection (may include resource pre-selection of the SCI which is not transmitted after the resource selection, or resource reservation of the SCI which is transmitted after the resource selection), that is, the first terminal device determines a first time-frequency resource set, where an implementation manner of determining the first time-frequency resource set 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 in the listening window. The listening may include, among other things, a process of detecting the SCI, or may include a process of detecting the SCI, decoding the SCI, and measuring a reference signal received power (reference signal receiving power, RSRP) of the resource according to an indication of the SCI.

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

1) Definition includes all M _total The set of candidate resources is S _A 。

2) If candidate resource R _x,y While satisfying the following condition, the candidate resource R _x,y Should be from set S _A Excluding:

the first terminal device does not listen to the time slotI.e. the first terminal device itself is in slot +.>Carrying out transmission;

the integer j is present to satisfy y+j×p' _{rsvp_TX} ＝m+q×P′ _{rsvp_RX} And q=1, 2, …, Q, j=1, 2, …, C _resel -1，The resource reservation interval for the first terminal device is in ms, which is a physical period (may include a time slot in a non-sidelink resource pool). P'. _{rsvp_RX} All physical periods indicated for the higher layer parameter reservationperiodic>Corresponding logic period, if P _{rsvp_RX} ≤T _scal And n '-m is less than or equal to P' _{rsvp_RX} ，/>Otherwise, q=1. Wherein if slot n belongs to the sidelink resource pool, and (2)>Otherwise->The first time slot belonging to the sidelink resource pool after the time slot n;

3) If candidate resource R _x,y While satisfying the following condition, the candidate resource R _x,y Should be from set S _A Excluding:

the first terminal device is in a time slotReceiving SCI and decoding P _{rsvp_RX} And prio _RX Wherein P is _{rsvp_RX} And prio _RX Physical period and priority for the PSSCH to which the SCI corresponds.

The RSRP measurement of the PSSCH determined by the SCI is greater than the threshold Th _{prioTX,prioRX} Wherein the threshold Th _{prioTX,prioRX} The method comprises the steps of receiving a function of a priority corresponding to data indicated in SCI and a priority corresponding to data to be sent of a first terminal device;

By time slotsReceived SCI and expected +.>Time-frequency resource and candidate resource determined by SCI of time slot reception>Coincidence, where q=1, 2, …, Q, j=1, 2, …, C _resel -1，P′ _{rsvp_TX} For the physical period of the first terminal device +.>Corresponding logic period, P' _{rsvp_RX} Physical period for receiving UE->Corresponding logic period, if P _{rsvp_RX} ≤T _scal And n '-m is less than or equal to P' _{rsvp_RX} ，/>Otherwise, q=1. Wherein if slot n belongs to the sidelink resource pool, and (2)>Otherwise->The first time slot belonging to the sidelink resource pool after the time slot n;

4) If candidate resource set S _A Less than M of candidate resources remaining _total 20% of the preset RSRP threshold Th _{prioTX,prioRX} Raising by 3dB, repeating steps 1) -4).

5) The first terminal equipment will aggregate S _A Reporting to the higher layer, and the higher layer is further assembled with the S _A And the final resource selection is completed.

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 resources that have been used by UE1, UE2 represents resources that have been used by UE2, UE3 represents resources that have been used by UE3, UE1 in the resource selection window represents reserved resources of UE1, UE2 represents reserved resources of UE2, and UE3 represents reserved resources of UE 3.

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

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

The number of transmission resources that can be selected by the higher layer is MaxTxTransNumPSSCH, when maxttransnumpssch=n _MAX When N _MAX The number of the sidelink resources that can be indicated by the frequency domain resource allocation field Frequency resource assignment and the time domain resource allocation field Time resource assignment in one SCI at most is represented, wherein one resource is used for current sidelink transmission, and the remaining number is used for indicating previous sidelink transmission and/or sidelink transmission reserved in the future. High layer parameter N _MAX When=2, the time-frequency resource allocation field in one SCI can only indicate at most two PSSCH resources, when the higher layer parameter N _MAX When=3, the time-frequency resource allocation field in one SCI can only indicate at most three PSSCH resources. And the direct maximum time domain distance of two or three resources indicated by SCI cannot exceed w=32 time slots, i.e. the maximum two or three sidelink resources can only be located in a time domain window with a length of 32 time slots, which belongs to the sidelink resource pool.

Step 602, interception is performed on at least two time units corresponding to the first time-frequency resource set;

after selecting the first set of time-frequency resources in step 601, the embodiment of the present application further performs at least two interception and resource exclusion of resources, where both the interception and exclusion of resources may be implemented in the manner shown in fig. 7.

For example, as shown in fig. 8, in step 601, the first terminal device may trigger resource selection in time slot n, where the corresponding listening window and resource selection window may be defined as [ n-T0, n-Tp0 ] and [ n+t1, n+t2], respectively, and the selected resource (i.e., the first set of time-frequency resources) is located in time slot m;

in step 602, as shown in fig. 8, the first terminal device may listen to SCI sent by other UEs in at least two time units before n2=m-T3, where the at least two time units may be each of at least two time slots before n2=m-T3, or may be at least two time slots selected randomly or periodically from a plurality of time slots, where the implementation is not limited, and the interval of the periodic time slots may be configured by a higher layer, specifically may be through radio resource control (Radio Resource Control, RRC) dedicated signaling, system message block (System Information Block, SIB) message or pre-configuration.

Suppose that the SCI sent by other UEs on resource S3 is detected within the listening window [ n1-T0, n1-TP0 ] corresponding to time slot n1 to indicate that the selected resource is reserved (occupation in this embodiment means: other UEs send SCI to indicate that the selected resource is reserved), the first terminal device may trigger the resource reselection at the current time or a set time after detecting that the selected resource is reserved (the interval between the set time and the current time may be configured by a higher layer, specifically, may be configured by RRC dedicated signaling, SIB message or preconfiguration, etc.), without waiting until the time slot n2=m-T3 to trigger the resource reselection again. The 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 forward than the time slot n2 and the corresponding resource selection window [ n2+t1, n2+t2] in the time domain, so that resources reserved by other UEs can be reselected in the earlier resource selection window in the time slot n1, and the earlier starting resource reselection is more likely to finish data transmission in the resource selection window far away from the PDB as early as possible, thereby meeting the requirement of time delay.

According to the resource interception and selection process shown in fig. 7, it can be determined that, when a terminal device intercepts a resource, if other terminal devices subscribe to a certain resource, a final candidate resource set (i.e. interception reported content) is obtained by adopting a mode of rejecting the resource, so that the first terminal device also rejects any subscribed resource in a resource selection window corresponding to each time unit according to the interception result;

If the selected resources are reserved by other UE, triggering the first terminal equipment to reselect the time-frequency resources for transmitting data, namely, eliminating the first resources 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 transmitting data according to the interception result.

In the embodiment of the present application, after interception is performed in at least two time units in step 602, the first terminal device may select the time-frequency resource for transmitting data again according to the interception result. Because the first terminal device in step 602 may perform resource interception in multiple time units, the corresponding interception window may be set in multiple manners, and the corresponding implementation manner of selecting the time-frequency resource according to the interception result may also correspond to the corresponding implementation manner, which may specifically be:

in the first way, as in the prior art shown in fig. 9, the other terminal device is in the first listening window [ n-T ₀ SCI sent on resource S1 within n-TP 0) indicates the first resource selection window [ n+t1, n+t2 ]]And a second resource selection window [ n1+T1, n1+T2 ]]Is reserved by other UEs. I.e. based on the result 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 ]Inner exclusion, without the need to select R2 from the second resource selection window [ n1+T1, n1+T2 ] based on the result of the second listening window [ n1-T0, n1-TP0 ]]Internal exclusion. Therefore, when the resource reselection is performed, if the report is performed only according to the result of the second resource selection window, part of the resources which should be eliminated may be missed.

Aiming at the problem that the existing interception window can miss part of resources reserved by other UE (or called resource occupation condition), the embodiment of the application can summarize interception results of a plurality of interception windows (the interception results refer to resource exclusion conditions 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 interception duration coverage and 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 relation between the time unit and the interception window, the implementation of resource exclusion can be as follows:

removing any one candidate resource in all candidate resource sets in the corresponding resource selection window according to the interception result corresponding to each interception window; assuming that the resource 1 in the resource selection window is reserved by other UE in the interception window 1, the resource 1 is eliminated; and records the result that resource 1 is excluded for the listening window. I.e. recording all the excluded candidate resources in the resource selection window corresponding to each listening window.

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

the specific implementation manner of eliminating any one candidate resource (including the first resource) is as follows: and when the fact that any one candidate resource is reserved is detected in at least one interception window, the candidate resource is eliminated.

After each interception window excludes the resources, the interception result (namely, the condition that the resources in each interception window are excluded) is recorded, the interception result of at least one interception window is summarized, and then the time-frequency resources used for sending data are selected according to the summarized interception result, wherein the specific implementation manner can be as follows:

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

If the first terminal device completes the first resource selection in time slot n, it can be represented by n2=m-T ₃ BeforeThe listening window [ n ' -T0, n ' -TP0 ] of at least two slots n ' randomly or periodically selected in each slot or slots listens to SCI transmitted by other UEs, i.e. the listening window of a fixed length is used to realize the resource listening of a plurality of time units, which may be regarded as a listening window of a sliding fixed length increasing with time to realize the resource listening of a plurality of time units. As shown in fig. 10, if it is detected that other UEs reserve some or all of the resources selected by the first terminal device in a certain time slot n1, the resource reselection may be triggered at this time, and a certain resource candidate resource R may be determined in a resource selection window corresponding to the last time slot unit according to the interception result commonly obtained by a plurality of interception windows [ n-T0, n-TP0 ] to [ n1-T0, n1-TP0 ] in the time slot n to the time slot n1 _x,y Whether or not (the resource may be any of the available resources for transmitting data appearing in the resource selection window) need to be excluded, in particular, if a certain candidate resource R _x,y If the interception result of any interception window is reserved (or occupied) by other UEs, i.e. the interception result is unavailable for data transmission of the first terminal device, it is necessary to select windows [ n1+t1, n2+t2 ] from the resources ]Will resource R _x,y And (5) excluding. The 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, resources which are excluded by any one of a plurality of interception windows cannot appear in the resource selection windows [ n1+ T1, n2+ T2 ]; the embodiment of the application simultaneously combines a plurality of interception windows to judge whether a certain resource is to be excluded, so that the interference of other UE occupying the resource can be eliminated to the greatest extent, and the reliability of data transmission is improved.

In a second manner, a start time corresponding to a listening window corresponding to each of the at least two time units is the same, and a termination time of each listening window is determined by the corresponding time unit. In this embodiment, the listening window is adjusted according to the time corresponding to the plurality of time units, for example, the time window may be gradually enlarged, so that the listening time of each listening window is different, and the target listening window corresponding to the last time unit in at least two time units covers the time of the listening window corresponding to each time unit in at least two time units, so that more comprehensive resource occupation information can be intercepted in the last listening window.

In the same manner as the first manner, any reserved candidate resource can be removed in the corresponding resource selection window when the target listening window corresponding to the last time unit listens to the reserved candidate resource, and the implementation of resource removal can be as follows:

selecting a interception result of a target interception 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, resource exclusion is performed through the listening result of this listening window, and then it is possible to determine the condition of all the excluded resources in the at least two time units.

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

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

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

If the first terminal device listens to SCI transmitted by other UEs in the listening window [ n-T0, n '-TP0 ] of at least two slots n' randomly or periodically selected in each slot or slots before n2=m-T3 after the first selection of resources is completed in slot n (i.e. the first set of time-frequency resources is determined), in this example, the initial time (i.e. the lower bound) of the listening window is unchanged, while the end time (i.e. the upper bound) of the sliding listening window is increased with time, and the length of the listening window is increased with the increase of the listening time. As shown in fig. 11, if it is detected in a certain time slot n1 that other UEs reserve part or all of the resources selected by the first terminal, the first terminal device is triggered to judge the resource selection windows [ n1+t1, n2+t2 ] according to the listening windows [ n-T0, n1-TP0 ] ]A certain resource R in _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) and need to be excluded. In this example, one listening window may cover a plurality of time units (each time slot before n2=m-T3 or at least two time slots n' selected randomly or periodically in a plurality of time slots), so in this example, all the occupation situations of resources from the time when the resources are selected to the time when the resources are reserved can be sensed without intermittence, so occupation situations of all the resources can be acquired more accurately and comprehensively, and the stability of the finally selected resources for transmitting data is high.

In the method provided by the embodiment of the application, interception is performed on a plurality of time units before the selected resources are used for transmitting data, so that the first terminal equipment can start resource reselection as early as possible, and the data transmission is completed within the resource selection window far from the PDB as early as possible, so that the time delay can be reduced 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, a plurality of interception windows can be combined at the same time to judge whether the resources in a certain resource selection window are to be excluded, so that the interference of other UE occupying the resources can be maximally eliminated, and the reliability of data transmission is improved.

Based on the method steps shown in fig. 6, after the determination of the first set of time-frequency resources (the selection of the first resource may also be understood, or referred to as preselection or reservation of resources) is performed in step 601, if the first resource in the first set of time-frequency resources is reserved by other terminal devices before the first resource in the first set of time-frequency resources is used, the terminal device may be triggered to reselect the resource to implement the transmission of data through step 603, and of course, before implementing the reselection of the resource in step 603, the elimination of the reserved resource of other terminals may also be implemented through interception, where the elimination operation may use any resource in the resource selection window corresponding to each time unit (the specific resource elimination operation uses the manner described in the 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 resources, the implementation manner when the reselection of the resources is performed in step 603 may further include:

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

As shown in fig. 12, the first set of time-frequency resources selected by the first terminal device in the time slot n includes resources R1, R2 and R3, and continues to monitor SCI sent by other UEs after the time slot n, and if it is monitored that the other UEs reserve the resource R2 in the time slot n1, the first terminal device is triggered to totally reselect the resources (R4, R5 and R6) for sending data.

The implementation method can be suitable for a resource preselection scene that the SCI is not sent to indicate preselection resources, because the first terminal equipment does not send the SCI, other UE does not know the resource selection condition of the first terminal equipment, the first terminal equipment can freely reselect all resources, the result of a first time-frequency resource set is not required to be reserved in the resource reselection process, the resource reselection is not required to be carried out under the limitation of the first time-frequency resource set, and the resource reselection can be realized more quickly and efficiently with higher freedom degree.

In the method a2, when one of the resources in the first resource set is reserved, and when the time-frequency resource is selected again in step 603, one resource is selected from the time-frequency resources available for transmitting data according to the interception result, so as to transmit the reserved resource.

As shown in fig. 13, if the first terminal device selects resources R1, R2 and R3 in time slot n, and continues to monitor SCI sent by other terminal devices after time slot n, if it is monitored that other terminal devices reserve resource R2 in time slot n1, the first terminal device reselects only resource R2 (e.g. selects resource R4 after reselection), and resources R1 and R3 not reserved by other UEs need not be reselected;

Since the reselection resource R4 needs to realize data transmission 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 and the positions of the resources R1 and R3 in the time domain meet the condition specified by the protocol; (2) The time domain and/or frequency domain distance between the resources R1, R4 and R3 meets the maximum time domain and/or frequency domain distance of the resources indicated by one SCI, (3) the time domain distance between two continuous 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 equal to or greater than the minimum processing delay of HARQ retransmission.

The scheme provided in the mode a2 may be applicable to a resource reservation scenario in which the SCI is sent to indicate the preselected resource, and because the first terminal device has sent the SCI and other UEs have determined the resource selection of the first terminal device, the first terminal device does not need to reselect all the resources, so as to avoid excessive reservation and waste of resources.

Through the implementation manner provided by the embodiment of the application, under the two scenes that the SCI is not sent to indicate the pre-selected resource and the SCI is sent to indicate the reserved resource, two schemes of totally reselecting all the resources and reselecting only the reserved resource are provided. The application does not limit the specific use situations of the two schemes, and each scene can use any scheme. Aiming at the requirements of different scenes, the flow of resource reselection is simplified, the problem of resource waste caused by excessive reservation is solved, and the overall design of a mode2 mechanism is further perfected.

Further, for the periodic service, the first terminal device may further implement data transmission in the periodic service with the corresponding periodic resource 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 period reservation is enabled (enabled), the resource that has been selected in the upcoming period should be reevaluated before each period. Therefore, the method provided by the embodiment of the present application may take the resource selected in each period of the periodic resources (one or more resources may be selected in one period) as a unit of initial selection and reselection of the resource, where the resource selected in each period is processed independently and does not affect the reselection and use of the resource selected in other periods, that is, after the first time-frequency resource set in step 601 is determined, according to the period of the periodic resource, at least two time units before the selected resource in each period are intercepted, and when the selected resource is reselected according to the interception result, the method may be regarded as a method for repeatedly executing the above steps 601 to 603 for each period, where the specific implementation may be that:

If the selected resource in each period is located in time slot m (where there may be one or more selected resources in each period), then SCI sent by other UEs may be monitored on at least two time slots randomly or periodically selected in each or more time slots before n2=m-T3 in each period (where m is the time slot corresponding to the selected resource in the period), and if it is monitored that other UEs reserve some or all of the preselected resources, the resource is excluded from the resource selection window, and at the current time, or a set time after it is detected that the selected resource is reserved, resource reselection is triggered. Since the resource selection window during resource reselection will be later in time than the first resource selection window, the reselected resource will have a greater probability of being later in time than the first selected resource. The time delay requirement is ensured.

In this example, since the time-frequency resources used for transmitting data are periodic, the selected resources in each period are intercepted, and whether to reselect the time-frequency resources used for transmitting data in the next period is determined according to the interception 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 selected resources in the next period are reserved, only the time-frequency resources used for transmitting data in the next period are reselected according to the interception result;

Since only the resource selected for the next cycle is reselected and the resources already selected for all cycles after the next cycle are not changed, an adjustment of the field indicating the cycle length is also required. Here, the field indicating the period length may be Resource reservation period, and when data and/or control message is 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 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 is temporarily interrupted.

As shown in fig. 14, it is assumed that the first terminal apparatus selects a set of periodic resources r1#1 (corresponding to period # 1), r1#2 (corresponding to period # 2), r1#3 (corresponding to period # 3) … in the slot n. And resource r1#2 is reserved by SCI S1 transmitted by other UEs. When re-evaluating the selected resource r1#1, reservations of other UEs for resource r1#2 have been detected, but at this point a re-selection of resource r1#2 is not triggered. Only when re-evaluating resource r1#2, will a re-selection of resource r1#2 be triggered. Suppose the reselected resource is r2#1, located within cycle # 2. The first terminal device continues to perform reselection evaluation on the previously selected resource r1#3, r1#4 …. And when the UE sends data and/or control messages on the resource r2#1 reselected in period #2, the field "resource reservation period" (Resource reservation period) in SCI is set to zero, i.e. other UEs are informed that the first terminal device reselects only resource r2#1 and that 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 … in the next time and if no reservation of the selected resources by other UEs is detected, data transmission is performed on the selected resources r1#3, r1#4 ….

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

Examples

As shown in fig. 15, the embodiment of the present application further provides another method for determining resources, which specifically may 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 schemes provided by the various implementation manners of the first aspect may be used for selecting the first time-frequency resource set, selecting the second time-frequency resource set, and excluding the resources; for example: setting a plurality of listening windows before selecting the second set of time-frequency resources; and excluding reserved resources in a plurality of listening windows; and when the second time-frequency resource set is selected, selecting according to the interception results of the interception windows.

Further, since the first set of time-frequency resources may include a plurality of resources, in the case where the first resources are excluded, then correspondingly, selecting the second set of time-frequency resources for transmitting data may include:

in the first mode, if any one of 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 transmitting data can be reselected according to the interception result to form a second time-frequency resource set.

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

Of course, when the re-selected resources and the time-frequency resources which are not reserved in the first time-frequency resource set together form the second time-frequency resource set, appropriate resource selection conditions need to be met, and the conditions in this embodiment may be: (1) The position of the resources in the second time-frequency resource set in the time domain meets the condition specified by the protocol; (2) The time domain and/or frequency domain distance between the resources in the second time-frequency resource set 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 time-frequency resource set should be greater than or equal to the minimum processing delay of HARQ retransmission.

Examples

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

step 1601, determining a set of time-frequency resources to be used for transmitting data;

step 1602, interception is performed on 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 the first resource is a periodic resource;

step 1604, selecting time-frequency resources for transmitting data according to the interception result.

since only the resource selected for the next cycle is reselected and the resources already selected for all cycles after the next cycle are not changed, an adjustment of the field indicating the cycle length is also required. Here, the field indicating the cycle length may be a Resource reservation period field in the SCI, and when data and/or control messages are transmitted on the reselected resource in the next cycle after only the selected resource in the next cycle is reselected, the field "resource reservation cycle" (Resource reservation period) indicating the cycle length in the SCI may be set to 0, indicating that the cycle length of the resource is 0.

The resource interception and reselection in this example are the same as those in the corresponding embodiment of fig. 14, and will not be described here again.

As shown in fig. 17, the embodiment of the present application further provides an apparatus for determining a resource, where the apparatus 1700 may include:

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

a transceiver module 1702 configured to listen to at least two time units corresponding to the first time-frequency resource set;

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

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

Alternatively, when the apparatus for determining resources is running, the processing module 1701 and the transceiver module 1702 may 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, for example in steps 701-704 shown in fig. 7.

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

The detailed description of the functions or the executed operations of the resource determining apparatus provided by the present application may refer to the steps executed by the scheduling terminal device in the method embodiment of the present application, which is not described herein.

Based on the above embodiments, as shown in fig. 18, a communication apparatus of the present application, which may be a terminal device, includes 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 in data communication with the memory 1801 under the control of the processor 1800.

The processor 1800 may be a central processing unit (central processing unit, CPU), a network processor (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 (programmable logic device, PLD), or a combination thereof. The PLD may be a complex programmable logic device (complex programmable logic device, CPLD), a field-programmable gate array (field-programmable gate array, FPGA), general-purpose array logic (generic array logic, GAL), or any combination thereof. The memory 1801 may include: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The processor 1800, the memory 1801, and the communication interface 1802 are interconnected. Optionally, the processor 1800, the memory 1801, and the communication interface 1802 may be interconnected by a bus 1803; the bus 1803 may be a peripheral component interconnect standard (peripheral component interconnect, PCI) bus or an extended industry standard architecture (extended industry standard architecture, EISA) bus, or the like. The buses may be classified as address buses, data buses, control buses, etc. For ease of illustration, only one thick line is shown in fig. 18, but not only one bus or one type of bus.

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

The embodiment of the application also provides a device for determining the resources, which comprises:

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 plurality of resources than the first resource.

The embodiment of the application also provides another device for determining resources, which comprises:

the interception unit is used for intercepting 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 transmitting the data according to the interception result.

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

The scheme provided by the embodiment of the application is mainly described from the perspective of the terminal equipment. It will be appreciated that in order to achieve the above-described functionality, the terminal device may comprise corresponding hardware structures and/or software modules performing the respective functionality. 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 implemented as hardware or computer software driven 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.

The embodiment of the application can divide the functional units of the terminal equipment according to the method example, for example, each functional unit can be divided corresponding to each function, and two or more functions can be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The embodiment of the application also provides terminal equipment which 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 the structure of a terminal device. For easy understanding and convenient illustration, in fig. 19, a mobile phone is taken as an example of the terminal device. 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 mainly used for storing software programs and data. The radio frequency circuit is mainly used for converting a baseband signal and a radio frequency signal and processing the radio frequency signal. 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 mainly used for receiving data input by a user and outputting data to the user. It should be noted that some kinds of terminal apparatuses may not have an input/output device.

When data need to be sent, the processor carries out baseband processing on the data to be sent and then outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit carries out radio frequency processing on the baseband signal and then sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of illustration, only one memory and processor is 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 storage device, etc. The memory may be provided separately from the processor or may be integrated with the processor, as the embodiments of the application are not limited in this respect.

In the embodiment of the present application, the antenna and the radio frequency circuit with the transmitting and receiving functions may be regarded as a transmitting and receiving unit of the terminal device (the transmitting and receiving unit may be one functional unit capable of implementing the transmitting function and the receiving function, or the transmitting and receiving unit may also include two functional units, that is, a receiving unit capable of implementing the receiving function and a transmitting unit capable of implementing the transmitting function, respectively), and the processor with the 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. The transceiver unit may also be referred to as a transceiver, transceiver device, etc. The processing unit may also be called a processor, a processing board, a processing module, a processing device, etc. Alternatively, a device for implementing a receiving function in the transceiver unit 1910 may be regarded as a receiving unit, and a device for implementing a transmitting function in the transceiver unit 1910 may be regarded as a transmitting unit, that is, the transceiver unit 1910 includes a receiving unit and a transmitting unit. The transceiver unit may also be referred to as a transceiver, transceiver circuitry, or the like. The receiving unit may also be referred to as a receiver, or receiving circuit, among others. The transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

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

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, 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-described embodiments, or for other procedures 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 illustrated in fig. 15 or 16, such as steps 1501-1502, 1601-1604, and/or other processes for supporting the techniques described herein. The transceiving unit 1910 may be used to perform all transceiving operations performed by the first terminal device in the embodiments shown in fig. 15 and 16, or other procedures for supporting 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 device may perform functions similar to the processing module 1701 and 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 embodiment may be the processor 2010 in fig. 20 and perform corresponding functions; the transceiver module 1702 in the above embodiment may be the transmit data processor 2020, and/or the receive data processor 2030 in fig. 20, and perform the corresponding functions. Alternatively, the processing module 1701 in the above embodiment may be the processor 2010 in fig. 20 and perform corresponding functions; although a channel encoder, a channel decoder are shown in fig. 20, it is to be understood that these modules are not limiting illustrations of the present embodiment, but are merely schematic.

Fig. 21 shows another form of the present embodiment. The processing device 2100 includes a modulation subsystem, a central processing subsystem, a peripheral subsystem, and other modules. The communication device in this embodiment may act as a modulation subsystem therein. In particular, the modulation subsystem may include a processor 2102, an interface 2104. The processor 2102 performs the function of the processing module 1701, and the interface 2104 performs the function of the transceiver module 1702. As another modification, 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 is 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 appreciated that the processor referred to in embodiments of the present application may be a CPU, but may also be other general purpose processors, digital signal processors (digital signal processor, DSP), application specific integrated circuits (application specific integrated circuit, ASIC), off-the-shelf programmable gate arrays (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be understood that the memory referred to in embodiments of the present application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile 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. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM).

Note that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, the memory (storage module) is integrated into 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 various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

It will be appreciated by those skilled in the art that 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 flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A method of resource determination, comprising:

listening in at least two time units corresponding to the first time-frequency resource set, wherein starting time corresponding to a listening window corresponding to each time unit in the at least two time units is the same, and ending time of each listening window is determined by the corresponding time unit;

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

3. The method of claim 2, wherein the excluding the first resource based on the listening result comprises:

4. The method of claim 3, wherein selecting time-frequency resources for transmitting data based on the listening result comprises:

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

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

determining that a first resource of the plurality of resources is reserved according to the interception result;

a second set of time-frequency resources for transmitting data is selected, any resource in the second set of time-frequency resources not belonging to the plurality of resources.

6. A method of resource determination, comprising:

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

listening in at least one time unit corresponding to the time-frequency resource set, wherein starting time corresponding to a listening window corresponding to each time unit in the at least one time unit is the same, and ending time of each listening window is determined by the corresponding time unit;

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

and if the first resource is reserved, selecting a time-frequency resource for transmitting data according to the interception result, wherein the time-frequency resource for transmitting data is not the first resource and is a time-frequency resource in a period corresponding to the first resource.

7. An apparatus for resource determination, comprising:

a transceiver module, configured to perform interception on at least two time units corresponding to the first time-frequency resource set, where starting time corresponding to an interception window corresponding to each of the at least two time units is the same, and ending time of each interception window is determined by a corresponding time unit;

8. The apparatus of claim 7, wherein the processing module is further for excluding a first resource based on the listening result; wherein the first resource is included in the first set of time-frequency resources.

9. The apparatus of claim 8, wherein the processing module is specifically configured to exclude the first resource when the first resource is detected to be reserved in a target listening window corresponding to a last time unit of the at least two time units.

10. The apparatus of claim 9, wherein the processing module 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.

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

a determining unit, configured to determine a first set of time-frequency resources to be used for transmitting data, where the first set of time-frequency resources includes a plurality of resources, and monitor at least two time units corresponding to the first set of time-frequency resources, where starting moments corresponding to listening windows corresponding to each of the at least two time units are the same, and ending moments of each listening window are determined by the corresponding time units, and determine that a first resource of the plurality of resources is reserved according to a listening result;

the determining unit is further configured to select a second set of time-frequency resources for transmitting data, where any resource in the second set of time-frequency resources does not belong to the plurality of resources.

12. An apparatus for resource determination, comprising:

a listening unit, configured to listen to at least one time unit corresponding to the time-frequency resource set, where a start time corresponding to a listening window corresponding to each time unit in the at least one time unit is the same, and a termination time of each listening window is determined by the corresponding time unit;

A configuration unit, 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 the selection unit is used for selecting the time-frequency resource for sending the data according to the interception result if the first resource is reserved, wherein the time-frequency resource for sending the data is not the first resource and is the time-frequency resource in the period corresponding to the first resource.

13. A terminal device, comprising:

a transceiver, configured to perform interception on at least two time units corresponding to the first time-frequency resource set, where starting time corresponding to an interception window corresponding to each of the at least two time units is the same, and ending time of each interception window is determined by a corresponding time unit;

14. The terminal device of claim 13, 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.

15. The terminal device of claim 13, wherein the processor is specifically configured to exclude the first resource when it is detected that the first resource is reserved in a target listening window corresponding to a last time unit of the at least two time units.

16. A communication device, comprising: a processor and a memory;

the memory is used 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 6.

17. A communication device, comprising: a processor and interface circuit;

the processor for executing the code instructions to perform the method of any one of claims 1 to 6.

18. A readable storage medium storing instructions which, when executed, cause the method of any one of claims 1 to 6 to be implemented.