CN117042128A

CN117042128A - Resource selection method, device and user equipment

Info

Publication number: CN117042128A
Application number: CN202210471471.5A
Authority: CN
Inventors: 王亚坤; 赵锐; 温小然; 郑石磊; 刘艳强; 赵丽
Original assignee: CICTCI Technology Co Ltd
Current assignee: CICTCI Technology Co Ltd
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2023-11-10

Abstract

The application discloses a resource selection method, a device and user equipment, and relates to the technical field of Internet of vehicles, wherein the method is applied to first user equipment and comprises the following steps: acquiring configured or preconfigured resource pool configuration, wherein a resource pool corresponding to the resource pool configuration comprises a first resource area and a second resource area; and selecting resources in the first resource area and the second resource area, wherein the selected resources are used for through link transmission. The scheme of the embodiment of the application solves the problems that when the method of occupying continuous sub-channels is needed for terminal transmission in the SL-U extended authorized frequency band direct link in the prior art, the requirement of OCB cannot be effectively met, and when the scheme of IRB in the SL-U multiplexing NR-U is adopted, IBE among different UEs is greatly increased due to the introduction of IRB, and the transmission performance of the service is affected, and the perfection of the resource allocation scheme of the SL-U is realized.

Description

Resource selection method, device and user equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for selecting resources, and a user equipment.

Background

The third generation partnership project (3rd Generation Partnership Project,3GPP) introduced a pass-through link (Sidelink on Unlicensed Spectrum, SL-U) operating in the unlicensed band during Rel-18. Devices operating in unlicensed bands use the band without authorization, compared to licensed band communication mechanisms, and so listen before talk (Listen Before Talk, LBT) mechanisms are introduced to avoid interference between different systems. In addition, in order to guarantee that the device occupies as much channel resources as possible after access, a limitation is put on the occupied channel bandwidth (Occupied Channel Bandwidth, OCB), which needs to meet 80% of the requirements, i.e. the occupied channel needs to be 80% or more for each LBT subband. Therefore, a new air interface (New Radio on Unlicensed Spectrum, NR-U) working in an unlicensed frequency band adopts comb resource blocks (Interlaced Resource Block, IRB), so that the transmission bandwidth of a channel is increased, and the requirement of OCB can be effectively met.

If the SL-U follows the scheme that the terminal transmission in the licensed band through link needs to occupy the continuous sub-channel, the requirement of the OCB cannot be effectively met. However, if the scheme of completely multiplexing the IRBs In the NR-U lacks unified scheduling of the base station, the terminal is completely relied on to autonomously perform resource selection, and the same system is allowed to use frequency division multiplexing to perform resource occupation, in-band leakage (IBE) between different UEs will greatly increase due to the introduction of the IRBs, thereby affecting the transmission performance of the service.

Disclosure of Invention

The application aims to provide a resource selection method, a resource selection device and user equipment, so as to solve the problems that when a method that a terminal in a SL-U (subscriber line-to-unit) delay authorized frequency band direct link needs to occupy continuous sub-channels in the prior art is unable to effectively meet the requirement of OCB (optical code) and IBE (interference between different UE (user equipment) is greatly increased due to the introduction of IRB when the SL-U multiplexes an IRB scheme in an NR-U, and the transmission performance of a service is affected.

In order to achieve the above object, an embodiment of the present application provides a resource selection method, which is characterized in that the method is applied to a first user equipment, and the method includes:

acquiring configured or preconfigured resource pool configuration, wherein a resource pool corresponding to the resource pool configuration comprises a first resource area and a second resource area;

And selecting resources in the first resource area and the second resource area, wherein the selected resources are used for through link transmission.

In order to achieve the above object, an embodiment of the present application further provides a user equipment, including a transceiver, a memory, a processor, and a computer program stored on the memory and running on the processor, where the processor implements the resource selection method according to the first aspect when executing the computer program.

In order to achieve the above object, an embodiment of the present application further provides a resource selection device, which is applied to a first user equipment, and the device includes:

the resource pool configuration module is used for acquiring the configuration or the pre-configured resource pool configuration, and the resource pool corresponding to the resource pool configuration comprises a first resource area and a second resource area;

and the selection module is used for selecting resources in the first resource area and the second resource area, and the selected resources are used for through link transmission.

In a fourth aspect, in order to achieve the above object, an embodiment of the present application further provides a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implement the resource selection method according to the first aspect.

The technical scheme of the application has at least the following beneficial effects:

the resource selection method of the embodiment of the application firstly obtains the configuration or the pre-configuration resource pool configuration to obtain the resource pool corresponding to the resource pool configuration, wherein the resource pool comprises a first resource area and a second resource area; and secondly, selecting resources in the first resource area and the second resource area, wherein the selected resources are used for through link transmission. In this way, by configuring the first resource region and the second resource region, it is possible to realize that when the resources selected in the first resource region are as continuous as possible, the OCB requirement can be satisfied by increasing the selection of the resources in the second resource region.

Drawings

FIG. 1 is a schematic diagram of a prior art frequency domain resource allocation for a resource pool;

FIG. 2 is a diagram showing the correspondence between IRB indexes and PRB indexes in NR-U;

FIG. 3 is a flow chart of a resource selection method according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a resource selected in an embodiment of the application;

fig. 5 is a schematic diagram of selecting a second resource block when the second resource region includes a Remaining RB according to an embodiment of the present application;

FIG. 6 is a second exemplary diagram of selecting a second resource block when the second resource region includes a Remaining RB in an embodiment of the present application;

FIG. 7 is a third exemplary diagram of selecting a second resource block when the second resource region includes a Remaining RB in accordance with an embodiment of the present application;

fig. 8 is one of schematic diagrams of a second resource region including at least part of PRBs in an embodiment of the present application;

FIG. 9 is a diagram illustrating a second resource region including at least a portion of PRBs in an embodiment of the present application;

fig. 10 is a schematic diagram of at least a portion of PRBs in which a second resource region includes at least one subchannel according to an embodiment of the present application;

FIG. 11 is a diagram illustrating a resource configuration when a resource pool includes a plurality of LBT subbands according to an embodiment of the present application;

FIG. 12 is a diagram illustrating resource selection when a resource pool includes a plurality of LBT subbands in an embodiment of the present application;

FIG. 13 is a schematic diagram of a resource selection device according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of a ue according to an embodiment of the present application.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided merely to facilitate a thorough understanding of embodiments of the application. It will therefore be apparent to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the application. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present application, it should be understood that the sequence numbers of the following 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, and should not constitute any limitation on the implementation process of the embodiments of the present application.

In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B may be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.

In describing embodiments of the present application, some concepts used in the following description are first explained.

1. Unlicensed frequency bands

Unlicensed spectrum can be tried out without application and can be used by any group or individual, for example, the common technologies of WiFI, bluetooth and the like are unlicensed frequency bands. In order to avoid interference between different systems, the unlicensed frequency band needs to avoid interference to other systems as much as possible, so that a listen before talk (Listen Before Talk, LBT) technology is introduced, channels are monitored before access, and when the monitored systems are idle, the channels are accessed.

2. R16 NR-V2X frequency domain resource allocation

The parameters related to the frequency domain resource allocation of the resource pool are as follows:

TABLE 1

In the R16 phase, the resource pool of the New air-interface internet of vehicles (New Radio-Vehicle to everything, NR-V2X) only supports consecutive PRBs in the frequency domain, and if the PRBs allocated to the resource pool are not integer multiples of the subchannel size, it is decided not to use redundant PRBs in order to reduce excessive modification to the already formed conclusions.

The frequency domain width of the physical through link control channel (Physical Sidelink Control Channel, PSCCH) supports the occupation of {10, 12, 15, 20, 25} PRBs. And, the PSCCH should be within one subchannel in the frequency domain. The lowest PRB occupied for the PSCCH and the lowest PRB for the physical through link shared channel (Physical Sidelink Shared Channel, PSSCH) remain aligned. The PSSCH occupies N consecutive subchannels.

As shown in fig. 1, it is assumed that 58 PRBs are included in total in the frequency domain, and each sub-channel includes 10 PRBs, so that 5 sub-channels and 8 Remaining RBs are included in total in the frequency domain, and the starting PRB index of sub-channel 1 is 4 (the index of the lowest PRB of the resource pool is 0). The resources that the resource pool can use for transmission are sub-channels 1-5, and 4 Remaining RBs on the upper and lower sides cannot be used for transmission. The resources transmitted by the device can only be consecutive subchannels (e.g. occupied subchannel #2 and subchannel #3 for terminal transmissions as in fig. 1).

3. NR-U frequency domain resource allocation

In an NR-U system, IRB design, i.e., two consecutive available resource blocks are separated by M resource blocks, is introduced in consideration of the requirements of regulations (the minimum channel occupation bandwidth cannot be less than 80% of the total channel bandwidth when a terminal uses an unlicensed spectrum). For IRB index M, it includes PRBs { M, m+m, m+2m, m+3m, … }, where M e {0,1, …, M-1} (i.e., one IRB includes multiple PRBs with a PRB spacing of M). In an NR-U system, IRB structures are defined for two sub-carrier intervals of 15kHz and 30kHz, respectively, as shown in Table 1 below:

μ	subcarrier spacing	M takes on value
			0	15kHz	10
1	30kHz	5

TABLE 2

As shown in fig. 2, for irb#0, it includes prb#0, prb#5, prb#10, prb#15; for irb#1, it includes prb#1, prb#6, prb#11, prb#16, and so on. The transmission resources of the terminal are all with IRB as granularity, for example, the terminal transmission occupies IRB#1 or IRB#1+IRB#3.

So if the UE needs to occupy 4 PRBs, if consecutive PRB occupancy is used (assuming PRB #0-PRB # 3), OCB is 4/20=20%; with IRB design (assuming irb#0), OCB is 16/20=80%, and thus the OCB requirement can be satisfied.

4. OCB (optical clear-cut)

Further, regarding the 80% limitation of OCB, it is further explained as follows: the 80% constraint of OCB is based on LBT subband (20 MHz in size). For example: the current total bandwidth is 20MHz, i.e. one LBT subband, the terminal transmission needs to meet 80% of the OCB requirements. If the current total bandwidth is 40MHz, i.e. includes two LBT subbands, if the transmission of the terminal is located in the upper or lower LBT subband, the occupied bandwidth needs to be greater than or equal to 80% of the corresponding LBT subband (i.e. 80% of 20 MHz); if the terminal transmission needs to span two LBT subbands, the occupation of each corresponding LBT subband needs to satisfy 80%. In summary, the terminal transmission occupies any N LBT subbands, and the occupation of each LBT subband is required to satisfy the 80% constraint.

5. LBT

The terminal working in the unlicensed frequency band needs to detect the channel before the channel is accessed, and can access the channel only when the channel is detected to be idle, so as to transmit the service to be transmitted. The channel access mode comprises the following steps:

(1) Type 1 channel access mode

And the terminal selects the corresponding channel access priority according to the priority of the service to be transmitted, and further determines the relevant parameters of the channel access. The flow is as follows:

step 1: setting a counter n=n _int Wherein N is _int Is 0 to CW _p Random numbers uniformly distributed among them, and then Step 4 is performed.

Step 2: if N >0, the terminal decrements the counter by 1, i.e., n=n-1.

Step 3: detecting a channel as a monitoring time slot with the length of Tsl (Tsl represents an LBT monitoring time slot with the length of 9 us), and executing Step 4 if the monitoring time slot is idle; otherwise, step 5 is performed.

Step 4: if n=0, ending the channel pickup process; otherwise, step 2 is performed.

Step 5: the time length of the channel is T _d (wherein T _d ＝16+m _p X 9 us) is detected, the result of which is either that at least one listening slot is occupied or that all listening slots are idle.

Step 6: if the channel listening result is T _d All monitoring time slots are idle in time, and Step 4 is executed; otherwise, step 5 is performed.

If the channel connect process ends, the terminal can use the channel to transmit the service to be transmitted. The maximum length of time that a terminal can use the channel for transmission cannot exceed T _mcot,p 。

The values of the parameters involved in the above steps are shown in table 2 below:

TABLE 3 Table 3

(2) Type 2 channel access mode

The Type 2 channel access is a channel access mode based on fixed channel monitoring length, and comprises three modes:

type 2A channel access: the UE performs channel monitoring of at least 25us before transmission starts, and performs transmission after the channel monitoring is successful

Type 2B channel access: the UE performs channel listening for 16us before transmission starts, and performs transmission after channel listening is successful.

Type 2C channel access: the UE does not need to monitor the channel and directly transmits. Wherein the gap between the start position of the transfer and the end position of the last transfer is less than or equal to 16us and the length of the transfer is not more than 584us.

The resource selection method, the device and the user equipment provided by the embodiment of the application are described in detail through specific embodiments and application scenes thereof with reference to the accompanying drawings.

As shown in fig. 3, an embodiment of the present application provides a resource selection method, which is applied to a first user equipment, and the method includes:

step 301, obtaining a configured or preconfigured resource pool configuration, wherein a resource pool corresponding to the resource pool configuration comprises a first resource area and a second resource area;

Here, it should be noted that, in this step, the resource pool configuration (information) may configure the resource pool to include at least two portions, i.e., a first resource region and a second resource region, where the first resource region and the second resource region may have overlapping portions in the frequency domain, or may be completely independent two portions, and the configuration of the first resource region and the second resource region in the time domain is the same; wherein the second resource region may also be referred to as an OCB reserved RB (region). The configuration information of the resource pool may include frequency domain information of the first resource region, frequency domain information of the second resource region, and time domain information, wherein the time domain information is applicable to the first resource region and the second resource region.

And step 302, selecting resources in the first resource area and the second resource area, wherein the selected resources are used for through link transmission.

Here, it should be noted that, the resource selection method in the embodiment of the present application can be applied to a user equipment of a SL-U, that is, the first user equipment may be a user equipment of a through link operating in an unlicensed band.

The resource selection method in the embodiment of the application acquires the corresponding resource pool based on the configured or preconfigured resource pool configuration (information), specifically, the resource pool configuration (information) configures the resource pool to at least comprise a first resource area and a second resource area so as to realize the selection of the resources for the transmission of the direct link in the first resource area and the second resource area, thus, the resources for the transmission of the direct link selected by the first user equipment in the first resource area and the second resource area can meet the requirement of OCB, and the problem that IBE among different UEs in NR-U is greatly increased due to the introduction of IRB and the transmission performance of service is influenced is avoided.

As an alternative implementation, the first resource region includes a continuous sub-channel and/or Remaining resource block Remaining RB in the frequency domain;

the second resource region is formed by two continuous Resource Block (RB) sets on the frequency domain, and the two continuous RB sets are positioned at two sides of the first resource region.

In the alternative implementation manner, the second resource areas are arranged on two sides of the first resource area, so that the problem that IBE among different UEs is greatly increased due to the introduction of IRB and the transmission performance of service is affected when the resource allocation scheme of NR-U is prolonged is solved by increasing the selection of resources in the second resource area to effectively meet the OCB requirement specified in the related protocol or standard under the condition that the resources selected in the first resource area can occupy continuous frequency domain resources as much as possible; and the problem that the method of occupying continuous sub-channels when the terminal in the extended authorized frequency band direct link can transmit can not effectively meet the requirement of OCB.

Specifically, the present alternative implementation includes the following cases:

in case one, the first resource region includes consecutive subchannels in the frequency domain, and the second resource region includes two consecutive RB sets in the frequency domain; taking fig. 5 to 7 as an example, the first resource region includes sub-channels 1 to 5, and the second resource region includes a Remaining RB located below sub-channel 1 and a Remaining RB located above sub-channel 5; wherein the Remaining RBs below sub-channel 1 and the Remaining RBs above sub-channel 5 are consecutive RB sets, respectively. Alternatively, as shown in fig. 10, the first resource region includes sub-channels 1 to 5, and the second resource region includes the first 3 PRBs in sub-channel 1 and the last 3 PRBs in sub-channel 5.

In the second case, the first resource region includes a continuous sub-channel and a Remaining RB in the frequency domain, and the second resource region includes two continuous RB sets in the frequency domain; taking fig. 8 as an example, the first resource region includes sub-channels 1 to 5, and a Remaining RB below sub-channel 1 and a Remaining RB above sub-channel 5; the second resource region includes the OCB reserved RB below the Remaining RBs below subchannel 1 and the OCB reserved RB above the Remaining RBs above subchannel 5.

Here, it should be noted that, in the case where the resource pool includes a plurality of LBT subbands, the second resource areas are located on two sides of the first resource area specifically: the first part of the second resource region is located at two sides of the second part of the first resource region, wherein the first part is a part of the second resource region located in a first LBT subband, the second part is a part of the first resource region located in the first LBT subband, and the first LBT subband is any LBT subband in the resource pool. Alternatively, in the case that a plurality of LBT subbands are included in the resource pool, a first resource region and a second resource region may be configured in each LBT subband with one LBT subband as a minimum configuration unit, where the second resource region in each LBT subband is located at both sides of the first resource region in the LBT subband. Specifically, taking fig. 11 as an example, in the LBT subband 1, OCB reserved RB areas (second resource areas) are respectively arranged on both sides of the subchannel (first resource area), and in the LBT subband 2, OCB reserved RB areas (second resource areas) are also respectively arranged on both sides of the subchannel (first resource area).

Here, it should also be noted that, although two consecutive RB sets forming the second resource region are defined to be disposed on both sides of the first resource region in the present alternative implementation manner, the second resource region may also be disposed on the same side of the first resource region as needed, for example, the first P PRBs of the resource pool are configured as the first resource region, and the first P PRBs may be configured as a plurality of subchannels and/or Remaining RBs; and configuring the last Q PRBs of the resource pool as a second resource region and the like, wherein P and Q are positive integers, and the values of P and Q meet the requirements of related protocols or standards on OCB.

As an optional implementation manner, the second resource region includes at least one of the following in a frequency domain:

(1) At least part of PRBs in Remaining resource blocks (Remaining RBs) in the resource pool, wherein the Remaining resource blocks (Remaining RBs) are PRBs except sub-channels in the resource pool;

as shown in fig. 5 to 7, the resource configuration on the frequency domain in the resource pool is as follows: there are 58 PRBs in total, where the number of subchannels is 5 (each subchannel contains 10 PRBs) and the number of Remaining RBs is 8 (where 4 Remaining RBs are located on the lower side of subchannel 1 and 4 Remaining RBs are located on the upper side of subchannel 5). Specifically, 5 subchannels constitute the first resource region, and 8 Remaining RBs constitute the second resource region in the alternative implementation. In order to meet the OCB limitation, the ue needs to occupy M Remaining RBs (where M < =8) in addition to N (where N < =5) consecutive subchannels, where the occupied M Remaining RBs may be located on the lower side of subchannel 1 or on the upper side of subchannel 5, or may be partially located on the lower side of subchannel 1 and partially located on the upper side of subchannel 5.

That is, in the resource pool allocation, a plurality of consecutive subchannels may be first allocated as the first resource region, and all PRBs other than the consecutive subchannels may be allocated as the second resource region.

(2) At least part of PRBs in the resource pool;

that is, a specific region in the resource pool may be configured as the second resource region, the specific region including one or more PRBs; that is, in the resource pool configuration, a specific area in the resource pool may be first configured as a second resource area according to the requirement, and then at least a part of the area other than the specific area is configured as a first resource area (sub-channel and/or Remaining RB);

(3) At least part of PRBs of at least one subchannel in the resource pool.

Taking fig. 10 as an example, the resources of the resource pool in the frequency domain include 50 PRBs, where the 50 PRBs are configured into 5 subchannels (each subchannel includes 10 PRBs), and the 5 subchannels are the first resource region in the embodiment of the present application, where the first user equipment needs to occupy PRBs in addition to N consecutive subchannels to meet the requirement of OCB. The additionally occupied PRBs are located in OCB reserved RBs (OCB reserved RBs constitute the second resource region of the embodiment of the present application). Wherein the OCB reserved RBs are the 3 PRBs on the lowest side of the lowest subchannel in the LBT subband and the 3 PRBs on the highest side of the highest subchannel in the LBT subband. The transmission of the first user equipment occupies part or all of the OCB reserved RBs on the upper and lower sides in addition to the occupied continuous sub-channels.

As a specific implementation, at least part of PRBs in the resource pool includes at least one of:

the first K PRBs of the first listen before talk, LBT, subband in the resource pool;

the last P PRBs of the first LBT subband in the resource pool;

wherein K and P are both positive integers, and the first LBT subband is any LBT subband in the resource pool.

Here, it should be noted that the values of K and P need to satisfy the OCB requirements specified in the related protocol or standard.

Taking an LBT subband as an example, as shown in fig. 8 and fig. 9, the resource pool includes 66 PRBs in total in the frequency domain, and as shown in fig. 8, the resource pool is configured with two upper and lower OCB reserved RB areas (second resource areas), each occupying 4 PRBs. That is, the second resource region includes the first 4 PRBs and the last 4 PRBs in the resource pool; the illustration is only one example, e.g., the second resource region may also include the first 2 PRBs and the last 6 PRBs in the resource pool; alternatively, as shown in fig. 9, the second resource area includes the first 8 PRBs and the last 8 PRBs in the resource pool, which are not specifically limited in the embodiment of the present application, and may be arbitrarily configured according to the needs.

As shown in fig. 8 and fig. 9, the resource pool includes 66 PRBs, and when at least some PRBs in the resource pool are configured as the second resource region, the configuration manner of the resource pool may be:

Mode one: as shown in fig. 8, the resource pool is configured with two OCB reserved RB areas (each of 4 PRBs) up and down as the second resource area. Since each subchannel includes 10 PRBs, the first resource region has 5 subchannels and 8 Remaining RBs. The illustration is merely one example, such as the first resource region may also be configured to: subchannel 1 is adjacent to the lower OCB reserved RBs, and 8 Remaining RBs are located above subchannel 5.

Mode two: as shown in fig. 9, the resource pool is configured with 5 sub-channels as a first resource region, the rest PRBs are reserved for OCBs, and 8 OCBs on the upper side of sub-channel 5 and 8 OCBs on the lower side of sub-channel 1 form a second resource region. Also, the illustration is only one of the schemes, and other arrangements are not excluded. For example, the OCB reserved RB on the upper side includes 10 PRBs, and the OCB reserved RB on the lower side includes 6 PRBs.

As an alternative implementation, at least one subchannel in the resource pool includes at least one of:

a starting subchannel of a first LBT subband in the resource pool;

a terminator subchannel of a first LBT subband in the resource pool;

wherein the first LBT subband is any one LBT subband in the resource pool.

As described above, in the case where the resource pool includes a plurality of LBT subbands, each LBT subband may be configured to include a first resource region and a second resource region in the above manner; in particular, when at least a portion of PRBs of at least one subchannel is configured as the second resource region, the at least one subchannel may be a start subchannel in each LBT subband and/or a stop subchannel in each LBT subband.

As an optional implementation, step 301, selecting a resource in the first resource area and the second resource area includes:

selecting a first resource block in the first resource region;

selecting a second resource block in the second resource region;

wherein the first resource block and the second resource block are located in the same time unit, and the time unit is any one of a subframe, a time slot and a symbol set.

That is, the resources for through link transmission selected in the embodiment of the present application may include a first resource block and a second resource block, where the first resource block and the second resource block may be discontinuous resource blocks, as shown in fig. 4, the transmission of the first user equipment occupies M PRBs (second resource block) in addition to N continuous subchannels (first resource block), and the occupied M PRBs and N subchannels may be discontinuous in the frequency domain, where N > =1, M > =1.

Specifically, the first resource block and the second resource block may be continuous resource blocks, and specifically, the first resource block and the second resource block may be selected for the purpose of meeting a preset requirement (such as an OCB requirement), and of course, if the first resource block is selected, the preset requirement can be met, or the second resource block may not be selected, that is, the case that M is 0. Specifically, if M is 0, it indicates that the transmission of the first ue occupies only N continuous subchannels; if N is 0, it indicates that the transmission of the first ue occupies only M PRBs.

In this optional implementation manner, by selecting the first resource block in the first resource area and selecting the second resource block in the second resource areas located at two sides of the first resource area, the selected resources (including the first resource block and the second resource block) can be discontinuous resource blocks, so as to meet the preset requirement (such as OCB requirement), thus perfecting the resource allocation scheme of the SL-U, so that the resource allocation of the SL-U does not need to extend the authorized frequency band, avoiding that the selected resources do not meet the OCB requirement of the unlicensed frequency band, and avoiding that the resource allocation scheme of the SL-U does not need to multiplex the resource allocation scheme of the NR-U, thereby avoiding the problem that the IBE between different UEs is greatly increased due to the introduction of the IRB, and affecting the transmission performance of the service.

As an optional implementation manner, the selected second resource block may be used to carry service information, or may not be used to carry service information, and when not used to carry service information, the corresponding position of the selected second resource block may send idle bits; that is, the second resource block is only used to enable the selected resources to meet the OCB requirement of the unlicensed band.

As another alternative implementation manner, demodulation reference signals (Demodulation Reference Signal, DMR) may or may not be set in the selected second resource block; specifically, for example, in the case where the second resource block does not carry service information, the DMRS may not be set in the second resource block, and in the case where the second resource block carries service information, the DMRS may be set in the second resource block.

As a specific implementation, the first resource block includes at least one physical resource that is continuous in the frequency domain;

the second resource block comprises one or more physical resource blocks, PRBs, in the frequency domain.

Specifically, the physical resources include subchannels and/or PRBs.

That is, in the embodiment of the present application, the first resource block may include one or more consecutive subchannels, or the first resource block may include one or more consecutive PRBs; alternatively, the first resource block includes one or more consecutive subchannels and one or more PRBs adjacent to the one or more consecutive subchannels.

As described above, in the case where the resource pool includes a plurality of LBT subbands, the first resource region in each LBT subband includes consecutive subchannels and/or Remaining RBs, and only OCB reserved RBs (second resource regions) are configured between the respective first resource regions, so that the subchannels on the respective first resource regions are also consecutive subchannels, and thus, this alternative implementation may be understood as that the first resource block selected in each LBT subband is consecutive physical resources (as shown in fig. 12); for example, in the case that the resource pool includes two LBT subbands, and each LBT subband includes 5 subchannels and a preconfigured OCB reserved RB, the selected first resource block includes 4 subchannels, specifically, the selected 4 subchannels include 2 subchannels occupied in LBT subband 1, 2 subchannels occupied in LBT subband 2, and in the embodiment of the present application, only 2 subchannels occupied in LBT subband 1 are defined to be consecutive, and 2 subchannels occupied in LBT subband 2 are defined to be consecutive; as such, the 4 sub-channels comprised by the first resource block are not consecutive from the overall view of the resource pool; for example, occupying a first subchannel and a second subchannel in LBT subband 1, occupying a fourth subchannel and a fifth subchannel in LBT subband 2, it can be seen that the two sets of subchannels are separated by a third subchannel to a fifth subchannel in LBT subband 1, and the first subchannel to the third subchannel in LBT subband 2; further, the second resource block may be selected in an area configured as the second resource area in the LBT sub-band 1 according to 2 sub-channels occupied in the LBT sub-band 1, and in an area configured as the second resource area in the LBT sub-band 2 according to 2 sub-channels occupied in the LBT sub-band 2, such that the first resource block and the second resource block selected in each LBT sub-band satisfy the OCB requirement.

For example, in the case that the second resource region is at least part of PRBs of at least one subchannel, as shown in fig. 10, the first 3 PRBs of subchannel 1 and the last 3 PRBs of subchannel 5 are configured as OCB reserved RBs constituting the second resource region, and on this basis, the selected first resource block may include subchannels 2 through 4, and may further include at least one PRB adjacent to subchannel 2 in subchannel 1, or at least one PRB adjacent to subchannel 4 in subchannel 5, and the selected second resource block is the last PRB in subchannel 5; alternatively, the second resource block selected is the second PRB in subchannel 1 and the last two PRBs in subchannel 5, etc.

Based on the above structures of the first resource block and the second resource block, the first resource block ensures that the selected resources are continuous sub-channels/PRBs as much as possible, and the second resource block can ensure that the selected resources meet the OCB requirement, so that the OCB requirement is effectively ensured under the condition of ensuring that the continuous frequency domain resources are occupied as much as possible.

As an optional implementation manner, the selecting the first resource block in the first resource area includes:

selecting the first resource block according to the sensing result of the first user equipment;

Wherein the sensing result includes at least one of information of a first resource block selected by a second user equipment, information of a second resource block selected by the second user equipment, and a measured value of reference signal received power (Reference Signal Received Power, RSRP) of the second user equipment, wherein the second user equipment is a device other than the first user equipment.

Specifically, in the case that the second resource region includes at least part of PRBs in the Remaining RBs in the resource pool in the frequency domain, and/or at least part of PRBs in the resource pool, resource exclusion may be performed according to an existing mechanism, and regarding resource selection, two cases may be included:

case one: the second configured resource region (OCB reserved RB) can meet the preset requirement (such as OCB requirement), for example, when the resource pool includes a plurality of LBT subbands and the first 10% and the last 10% of each LBT subband are configured as the second resource region, it is determined that the second configured resource region can meet the OCB requirement, then the existing operation may be performed: according to the sensing result, randomly selecting transmission resources;

and a second case: the second resource area (OCB reserved RB) configured may not necessarily meet the preset requirement (such as the OCB requirement), for example, the second resource area is configured only on the upper side of the resource pool, if the selected first resource block and the second resource area are adjacent, the preset requirement is difficult to be met, and when the sub-channel and/or the Remaining RB with a larger interval from the second resource area should be selected as the first resource block as much as possible, the sub-channel and/or the Remaining RB capable of meeting the preset requirement should be preferentially selected as the first resource block in the self-selection process.

Further, as an optional implementation, before the step of selecting the first resource block in the first resource region, the method further includes:

the frequency domain size of the first resource block is determined according to transmit power and power spectral density (Power Spectral Density, PSD) requirements.

That is, the frequency domain size of the selected first resource block should meet the requirements of transmit power and PSD specified in the relevant protocol or standard.

As an optional implementation manner, the selecting the second resource block in the second resource area includes any one of the following:

(1) Selecting all frequency domain resources of the second resource region as frequency domain resources of the second resource block; i.e. all user equipments occupy all frequency domain resources in the second resource region;

(2) Randomly selecting the frequency domain resource of the second resource block from the frequency domain resources of the second resource region; namely: in the case that the size of the frequency domain resource of the second resource block required to be selected by the first user equipment is smaller than the number of resource blocks in the second resource region, the frequency domain resource of the second resource block can be randomly selected in the second resource region;

here, it should be noted that, in order to make the selected first resource block and the second resource block meet the preset requirement (such as the OCB requirement), in this implementation manner, the second resource block may be specifically selected randomly in the second resource region based on the frequency domain position of the first resource block that has been selected. Taking fig. 5 to 7 as an example, in the case where the second resource region includes a Remaining RB, the resource configuration on the frequency domain in the resource pool is as follows: there are 58 PRBs in total, where the number of subchannels is 5 (each subchannel contains 10 PRBs) and the number of Remaining RBs is 8 (where 4 Remaining RBs are located on the lower side of subchannel 1 and 4 Remaining RBs are located on the upper side of subchannel 5). Specifically, 5 subchannels constitute the first resource region, and 8 Remaining RBs constitute the second resource region in the alternative implementation. To meet the OCB limit, the user equipment transmission needs to occupy M Remaining RBs (second resource blocks) in addition to N consecutive subchannels (first resource blocks), where M < = 8. Where M Remaining RBs may be all located on the upper side (e.g., PRB separated from subchannel 5 by one PRB in fig. 6), all located on the lower side (e.g., PRB separated from subchannel 1 by two PRBs in fig. 7), or part of the Remaining RBs located on the upper side may be located on the lower side (e.g., PRB separated from subchannel 5 by one PRB in fig. 5, and PRB separated from subchannel 1 by two PRBs), which is related to the location of the subchannel occupied by the terminal, but all eventually meet the OCB requirement of 80%.

(3) Determining the frequency domain resource of the second resource block according to the frequency domain corresponding relation between the first resource block and the second resource block and the frequency domain resource of the first resource block which is selected; that is, on the basis of the selected first resource block, the frequency domain resource of the second resource block may be selected in the second resource region based on the frequency domain correspondence and the frequency domain resource of the selected first resource block.

Specifically, the frequency domain correspondence relationship includes: a frequency domain correspondence between first information of the second resource block and second information of the first resource block, wherein the first information includes a starting position of the second resource block on a frequency domain and/or a number of PRBs in the second resource block; the second information includes an index of a starting physical resource of the first resource block in a frequency domain and/or a number of physical resources in the first resource block.

Taking the case that the second resource region includes at least part of PRBs in Remaining resource blocks (Remaining RBs) in the resource pool in the frequency domain as an example, it is assumed that 5 subchannels included in the resource pool in the frequency domain are configured as the first resource region, an upper side of a highest subchannel includes 3 Remaining RBs (Higher Remaining RB #1,Higher Remaining RB#2,Higher Remaining RB#3), and a lower side of a lowest subchannel includes 2 Remaining RBs (Lower Remaining RB #1,Lower Remaining RB#2) configured as the second resource region. The starting position of the first resource block selected by the first user equipment on the frequency domain (the starting position of the subchannel occupied by the first user equipment) and the selected second resource block (the additional Remaining RB that needs to be occupied) have an implicit frequency domain correspondence relationship, as shown in the following table 4:

TABLE 4 Table 4

Taking the example that the second resource region includes at least part of PRBs in the resource pool in the frequency domain, it is assumed that 5 sub-channels included in the resource pool (20 MHz, one LBT sub-band) are configured as the first resource region, and further, OCB reserved RBs are independently configured as the second resource region, including 3 PRBs (Higher PRB #1,Higher PRB#2,Higher PRB#3) with the highest resource pool and 2 PRBs (Lower PRB #1, lower PRB # 2) with the lowest resource pool. An implicit frequency domain correspondence between a starting position of a first resource block selected by a first user equipment on a frequency domain (a starting position of a subchannel occupied by the first user equipment) and a selected second resource block (an additional Remaining RB that needs to be occupied) is as follows in table 5:

TABLE 5

Taking at least a part of PRBs of the second resource region including at least one subchannel in the resource pool in the frequency domain as an example, it is assumed that 5 subchannels included on frequency domain resources of the resource pool are configured as the first resource region, and the uppermost 3 PRBs (Higher PRB #1,Higher PRB#2,Higher P RB#3) in the highest subchannel and the lowermost 3 PRBs (Lower PRB #1,Lower PRB#2,Lower PRB#3) in the lowest subchannel are set as OCB reserved RBs, i.e., configured as the second resource region. An implicit frequency domain correspondence between a starting position of a first resource block selected by a first user equipment on a frequency domain (a starting position of a subchannel occupied by the first user equipment) and a selected second resource block (an additional Remaining RB that needs to be occupied) is shown in the following table 6:

TABLE 6

Here, it should also be noted that, if multiple transmissions are involved, the multiple sets of transmissions correspond to multiple sets of subchannels (first resource blocks) and additionally occupied PRBs (second resource blocks), and the positions of the multiple sets of corresponding additionally occupied PRBs (second resource blocks) may be the same, or the corresponding additionally occupied PRBs (second resource blocks) may be selected according to the subchannels (first resource blocks) occupied by the multiple sets of transmissions.

As an optional implementation manner, the selecting the first resource block according to the sensing result of the first user equipment includes:

performing resource exclusion according to the perceived result when the second resource region is at least part of PRBs of at least one subchannel of the resource pool;

and selecting the first resource block from the available resource set after the resource is excluded.

In this optional implementation manner, according to the sensing result, performing resource exclusion specifically includes the following two ways:

mode one: completely disregarding the configured second resource region and considering only resource exclusion of sub-channel granularity, wherein the information indicating the occupied sub-channel in the through link control information (Sidelink Control Information, SCI) received by the first user equipment;

Mode two: when the resource exclusion is performed, the second resource area is considered to be configured, which specifically includes: removing the sub-channel where the second resource area is located; or excluding the sub-channel with the RSPR value larger than the RSRP threshold value in the sub-channel where the second resource area is located.

Based on the foregoing, as a specific implementation manner, the performing resource exclusion according to the sensing result, performing resource exclusion includes at least one of the following:

(1) Performing resource exclusion according to the information of the first resource block selected by the second user equipment;

specifically, this step may be to exclude the first resource block reserved/occupied by the second ue;

(2) Performing resource exclusion according to the information of the first resource block selected by the second user equipment and the RSRP value;

specifically, this step may be to exclude a subchannel having an RSRP value greater than an RSRP threshold in the first resource block reserved/occupied by the second user equipment;

(3) Performing resource exclusion according to the information of the second resource block selected by the second user equipment;

specifically, this step may be to exclude a subchannel in which the second resource block reserved/occupied by the second ue is located; the information of the second resource block selected by the second user equipment may be directly indicated by the SCI sent by the second user equipment, or the information of the first resource block occupied by the second user equipment and the configured or preconfigured frequency domain correspondence between the first resource block and the second resource block indicated by the SCI sent by the second user equipment determine the information of the second resource block selected by the second user equipment;

(4) And performing resource exclusion according to the information of the second resource block selected by the second user equipment and the RSRP value.

Specifically, this step may be to exclude a subchannel with an RSRP value greater than the RSRP threshold value from subchannels where the second resource block occupied by the second user equipment is located.

As an optional implementation manner, the selecting the first resource block from the available resource set after the resource exclusion includes:

selecting the first resource block from a first available resource set, wherein the first available resource set is a resource subjected to resource elimination according to the information of the first resource block selected by the second user equipment and the information of the second resource block selected by the second user equipment, or a resource subjected to resource elimination according to the information of the first resource block selected by the second user equipment, the information of the second resource block selected by the second user equipment and the RSRP value;

selecting the first resource block from a second available resource set under the condition that the first resource block selected from the first available resource set and the selected second resource block do not meet the preset requirement; the second available resource set is a resource after resource exclusion according to the information of the first resource block selected by the second user equipment, or a resource after resource exclusion according to the information of the first resource block selected by the second user equipment and the RSRP value.

That is, in this alternative implementation, the selection of the first resource block may be performed first in the available resource set excluding the first resource block selected by the second user equipment and the subchannel where the second resource block selected by the second user equipment is located, or in the available resource set excluding the subchannel where the RSRP value in the first resource block selected by the second user equipment is greater than the RSRP threshold, and the subchannel where the RSRP value in the subchannel where the second resource block selected by the second user equipment is located is greater than the RSRP threshold, and if the selected first resource block does not meet the preset requirement (e.g., the OCB requirement), the selection of the first resource block may be performed in the available resource set excluding the first resource block selected by the second user equipment, or after the subchannel where the RSRP value in the first resource block selected by the second user equipment is greater than the RSRP threshold.

Thus, the implementation of this alternative implementation may be:

firstly, performing resource exclusion on a candidate resource set, which specifically comprises: performing resource elimination according to the information of the first resource block selected by the second user equipment and the information of the second resource block selected by the second user equipment, or performing resource elimination according to the information of the first resource block selected by the second user equipment, the information of the second resource block selected by the second user equipment and the RSRP value;

Secondly, selecting the first resource block from the available resource set subjected to resource exclusion;

then, when the selected first resource block and the selected second resource block do not meet the preset requirement, re-performing resource elimination on the candidate resource set, wherein the method specifically comprises the following steps: performing resource elimination according to the information of the first resource block selected by the second user equipment, or performing resource elimination according to the information of the first resource block selected by the second user equipment and the RSRP value;

and finally, selecting the first resource block from the available resource set subjected to resource elimination again.

As another alternative implementation, the step of selecting the first resource block includes: selecting a first resource block in a sub-channel except a sub-channel occupied by a second resource block selected by the second user equipment; alternatively, the selection of the first resource block is performed according to existing mechanisms (i.e., no special processing is done for the subchannel occupied by the second resource block).

As an optional implementation manner, the first resource block and the second resource block selected by the resource selection method according to the embodiment of the present application meet a preset OCB requirement.

Further, as an alternative implementation, the method further includes:

carrying through link control information SCI on the selected resources, the SCI carrying at least one of the following information:

the first indication information is used for indicating the time-frequency position of the first resource block;

second indication information for indicating whether resources in the second resource region are occupied;

third indication information for indicating a position of the second resource block in the second resource region;

fourth indication information for indicating the start position and number of the second resource blocks.

In the case that only the first indication information is included in the SCI, it indicates that the SCI may indicate the occupied sub-channel (i.e., the selected first resource block) only according to the existing mechanism, so that the time-frequency location of the second resource block may be determined based on the frequency domain correspondence of the first resource block and the second resource block and the first indication information.

In addition, as shown in fig. 11, if the resource pool frequency domain resource includes two LBT subbands, the first resource region and the second resource region may be configured for each LBT subband according to the embodiment of the present application. Regarding the selection of the second resource block, if an implicit mapping is used, the problem involved here is the determination of the starting subchannel: if multiple LBT sub-bands are occupied, the starting sub-channel is the index corresponding to the first sub-channel of the occupied current LBT sub-band. For example, if the terminal occupies subchannel #5 (the 5 th subchannel located in LBT subband 1) and subchannel #6 (the 1 st subchannel located in LBT subband 2), LBT subband 1 selects the M additional PRBs of the corresponding LBT subband 1 according to subchannel #5, and LBT subband 2 selects the M additional PRBs of the corresponding LBT subband 2 according to subchannel # 1.

The resource selection method of the embodiment of the application can configure the resource pool to comprise a first resource area and second resource areas positioned at two sides of the first resource area, thereby selecting a first resource block in the first resource area and selecting a second resource block in the second resource area, so that the selected resources (the first resource block and the second resource block) can be discontinuous resource blocks, and thus, under the condition of ensuring that the selected resources are continuous sub-channels as far as possible, the OCB requirement can be met, and thus, the resource configuration scheme of SL-U is perfected.

As shown in fig. 13, an embodiment of the present application further provides a resource selection device, which is applied to a first user equipment, where the device includes:

an obtaining module 1301, configured to obtain a configuration or a preconfigured resource pool configuration, where a resource pool corresponding to the resource pool configuration includes a first resource area and a second resource area;

a selection module 1302, configured to select resources in the first resource area and the second resource area, where the selected resources are used for through link transmission.

In the resource selection device of the embodiment of the present application, the obtaining module 1301 obtains the configured or preconfigured resource pool configuration (information) to determine the corresponding resource pool, and specifically, the resource pool configuration (information) configures the resource pool to at least include a first resource area and a second resource area, so as to implement that the selecting module 1302 selects resources for transmission of a through link in the first resource area and the second resource area, so that resources for transmission of the through link selected by the first user equipment in the first resource area and the second resource area can meet the requirement of an OCB, and the problem that IBE between different UEs in the NR-U is greatly increased due to the introduction of IRB, and the transmission performance of a service is affected is avoided.

Optionally, the first resource region includes a continuous sub-channel and/or a Remaining resource block Remaining RB in a frequency domain;

Optionally, the second resource region includes at least one of the following in the frequency domain:

at least part of PRBs in Remaining resource blocks (Remaining RBs) in the resource pool, wherein the Remaining resource blocks (Remaining RBs) are PRBs except sub-channels in the resource pool;

at least part of PRBs in the resource pool;

at least part of PRBs of at least one subchannel in the resource pool.

Optionally, at least part of PRBs in the resource pool comprises at least one of:

the last P PRBs of the first LBT subband in the resource pool;

Optionally, at least one subchannel in the resource pool includes at least one of:

a starting subchannel of a first LBT subband in the resource pool;

A terminator subchannel of a first LBT subband in the resource pool;

wherein the first LBT subband is any one LBT subband in the resource pool.

Optionally, the selecting module 1302 includes:

a first selection sub-module for selecting a first resource block in the first resource region;

a second selection sub-module for selecting a second resource block in the second resource region;

Optionally, the first resource block includes at least one physical resource that is contiguous in the frequency domain;

Optionally, the physical resource includes a subchannel and/or a PRB.

Optionally, the first selection submodule includes:

a first selection unit, configured to select the first resource block according to a sensing result of the first user equipment;

the sensing result includes at least one of information of a first resource block selected by a second user equipment, information of a second resource block selected by the second user equipment, and a measured second user equipment reference signal received power RSRP value, where the second user equipment is a device other than the first user equipment.

Optionally, the selecting module further includes:

a determining submodule, configured to determine, before the first selecting submodule selects a first resource block in the first resource area, a frequency domain size of the first resource block according to a transmit power and a power spectral density PSD requirement.

Optionally, the second selecting sub-module is specifically configured to perform any one of the following operations:

selecting all frequency domain resources of the second resource region as frequency domain resources of the second resource block;

randomly selecting the frequency domain resource of the second resource block from the frequency domain resources of the second resource region;

and determining the frequency domain resource of the second resource block according to the frequency domain corresponding relation between the first resource block and the second resource block and the frequency domain resource of the first resource block which is selected.

Optionally, the frequency domain correspondence relationship includes: a frequency domain correspondence between first information of the second resource block and second information of the first resource block, wherein the first information includes a starting position of the second resource block on a frequency domain and/or a number of PRBs in the second resource block; the second information includes an index of a starting physical resource of the first resource block in a frequency domain and/or a number of physical resources in the first resource block.

Optionally, the first selecting unit includes:

a resource exclusion subunit, configured to, in a case where the second resource region is at least part of PRBs of at least one subchannel of the resource pool, perform resource exclusion according to the sensing result;

and the selecting subunit is used for selecting the first resource block from the available resource set after the resource is removed.

Optionally, the resource exclusion subunit is specifically configured to perform at least one of:

performing resource exclusion according to the information of the first resource block selected by the second user equipment;

performing resource exclusion according to the information of the first resource block selected by the second user equipment and the RSRP value;

performing resource exclusion according to the information of the second resource block selected by the second user equipment;

and performing resource exclusion according to the information of the second resource block selected by the second user equipment and the RSRP value.

Optionally, the selecting subunit is specifically configured to:

Optionally, the first resource block and the second resource block are selected to meet a preset OCB requirement.

Optionally, the apparatus further comprises:

a sending module, configured to carry through link control information SCI on the selected resource, where the SCI carries at least one of the following information:

As shown in fig. 14, an embodiment of the present application further provides a user equipment, including: a transceiver 1410, a processor 1400, a memory 1420, programs or instructions stored on the memory 1420 and executable on the processor 1400; the processor implements each process of the resource selection method embodiment applied to the first user equipment when executing the program or the instruction, and can achieve the same technical effects, so that repetition is avoided, and no description is repeated here.

The transceiver 1410 is configured to receive and transmit data under the control of the processor 1400.

Wherein in fig. 14, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors, represented by processor 1400, and various circuits of memory, represented by memory 1420, coupled together. The bus architecture may also connect together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1410 may be a number of elements, i.e., include a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The user interface 1430 may also be an interface capable of interfacing with an inscribed desired device for a different device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1400 is responsible for managing the bus architecture and general processing, and the memory 1420 may store data used by the processor 1400 in performing operations.

Those skilled in the art will appreciate that all or part of the steps of implementing the above-described embodiments may be implemented by hardware, or may be implemented by instructing the relevant hardware by a computer program comprising instructions for performing some or all of the steps of the above-described methods; and the computer program may be stored in a readable storage medium, which may be any form of storage medium.

In addition, the embodiment of the present application further provides a computer readable storage medium, where a program is stored, where the program, when executed by a processor, implements each process of the resource selection method embodiment described above, and the same technical effects can be achieved, and for avoiding repetition, a detailed description is omitted herein. Among them, the computer readable storage medium is Read-Only Memory (ROM), random access Memory (Random Access Memory RAM), magnetic disk or optical disk, etc.

While the foregoing is directed to the preferred embodiments of the present application, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present application, and such modifications and adaptations are intended to be comprehended within the scope of the present application.

Claims

1. A method of resource selection, for use with a first user device, the method comprising:

2. The method according to claim 1, wherein the first resource region comprises consecutive subchannels and/or Remaining resource blocks Remaining RBs in the frequency domain;

3. The method of claim 1, wherein the second resource region comprises at least one of:

at least part of PRBs in the resource pool;

at least part of PRBs of at least one subchannel in the resource pool.

4. The method of claim 3, wherein at least a portion of PRBs in the resource pool comprises at least one of:

the last P PRBs of the first LBT subband in the resource pool;

5. A method according to claim 3, wherein at least one subchannel in the resource pool comprises at least one of:

a starting subchannel of a first LBT subband in the resource pool;

a terminator subchannel of a first LBT subband in the resource pool;

wherein the first LBT subband is any one LBT subband in the resource pool.

6. The method of claim 1, wherein the selecting resources in the first resource region and the second resource region comprises:

selecting a first resource block in the first resource region;

selecting a second resource block in the second resource region;

7. The method of claim 6, wherein the first resource block comprises at least one physical resource that is contiguous in the frequency domain;

8. The method of claim 7, wherein the physical resources comprise subchannels and/or PRBs.

9. The method of claim 6, wherein the selecting the first resource block in the first resource region comprises:

10. The method of claim 6, wherein prior to the step of selecting a first resource block in the first resource region, the method further comprises:

and determining the frequency domain size of the first resource block according to the transmitting power and the power spectrum density PSD requirement.

11. The method of claim 6, wherein the selecting the second resource block in the second resource region comprises any one of:

12. The method of claim 11, wherein the frequency domain correspondence comprises: a frequency domain correspondence between first information of the second resource block and second information of the first resource block, wherein the first information includes a starting position of the second resource block on a frequency domain and/or a number of PRBs in the second resource block; the second information includes an index of a starting physical resource of the first resource block in a frequency domain and/or a number of physical resources in the first resource block.

13. The method of claim 9, wherein the selecting the first resource block according to the perceived result of the first user equipment comprises:

14. The method of claim 13, wherein the performing resource exclusion according to the perceived result comprises at least one of:

15. The method of claim 14, wherein selecting the first resource block from the set of available resources after the resource exclusion comprises:

16. The method according to any of claims 6 to 15, wherein the first resource block and the second resource block are selected to meet a pre-set OCB requirement.

17. The method of claim 6, wherein the method further comprises:

18. A user equipment comprising a transceiver, a memory, a processor and a computer program stored on the memory and running on the processor, characterized in that the processor implements the resource selection method according to any of claims 1 to 17 when executing the computer program.

19. A resource selection device, for application to a first user device, the device comprising:

20. A readable storage medium having stored thereon a program or instructions, which when executed by a processor, implements the resource selection method according to any of claims 1 to 17.