CN112714414B - Resource selection scheme determination method, device, terminal and storage medium - Google Patents

Resource selection scheme determination method, device, terminal and storage medium Download PDF

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CN112714414B
CN112714414B CN202010355974.7A CN202010355974A CN112714414B CN 112714414 B CN112714414 B CN 112714414B CN 202010355974 A CN202010355974 A CN 202010355974A CN 112714414 B CN112714414 B CN 112714414B
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current channel
resource selection
selection scheme
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CN112714414A (en
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章钱
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Chenxin Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention discloses a method, a device, a terminal and a storage medium for determining a resource selection scheme. Wherein, the method comprises the following steps: and acquiring a current channel detection result, and determining that a resource selection scheme is random selection or partial detection according to the channel detection result. Therefore, the resource selection scheme can be flexibly selected according to the actual situation of the current channel in a dynamic mode so as to reduce the power consumption of the terminal.

Description

Resource selection scheme determination method, device, terminal and storage medium
Technical Field
The present invention relates to data processing technologies, and in particular, to a method, an apparatus, a terminal, and a storage medium for determining a resource selection scheme.
Background
In the internet of vehicles Transmission Mode 4 (TM 4), three resource selection types are included, which are full sounding, partial sounding, and random selection, as shown in fig. 1, where full sounding is to detect resource information of all sub-channels in one window (1000ms), partial sounding is to select Y subframes for sounding in a sounding window, where a value of Y may be determined according to network configuration and user equipment autonomous selection, and random selection is to select a resource randomly in all resource pools. The resource selection of the handheld terminal (P2X) usually has two modes of partial detection and random selection, but which resource selection method is adopted by the P2X is influenced by various factors such as the capability of the P2X and the configuration of the sending resource pool of the P2X.
In the prior art, the transmission resource pool of P2X can be configured to support only random selection, only partial sounding, and both random selection and partial sounding, but when P2X supports both random selection and partial sounding, there is no definite solution to perform resource selection.
Disclosure of Invention
The invention provides a method, a device, a terminal and a storage medium for determining a resource selection scheme, which can flexibly select the resource selection scheme in a dynamic mode according to the actual situation of a current channel so as to reduce the power consumption of the terminal.
In a first aspect, an embodiment of the present invention provides a method for determining a resource selection scheme, where the method includes:
acquiring a current channel detection result;
determining a resource selection scheme according to the current channel detection result;
the resource selection scheme is any one of random selection and partial detection.
In a second aspect, an embodiment of the present invention further provides an apparatus for determining a resource selection scheme, where the apparatus includes:
the acquisition module is used for acquiring a current channel detection result;
a determining module, configured to determine a resource selection scheme according to a current channel sounding result;
the resource selection scheme is any one of random selection and partial detection.
In a third aspect, an embodiment of the present invention further provides a handheld terminal, where the device includes:
the resource selection scheme determination method comprises the following steps of storing a resource selection scheme, and executing a computer program stored on the memory and capable of running on the processor.
In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the method for determining a resource selection scheme provided in the embodiment of the present invention is implemented.
The embodiment of the invention provides a method, a device, a terminal and a storage medium for determining a resource selection scheme, and particularly relates to the steps of acquiring a current channel detection result and determining whether the resource selection scheme is randomly selected or partially detected according to the channel detection result. Therefore, the resource selection scheme can be flexibly selected according to the actual situation of the current channel in a dynamic mode so as to reduce the power consumption of the terminal.
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FIG. 1 is a schematic diagram of resource detection in an embodiment of the invention;
FIG. 2 is a schematic diagram of the detection of portion P2X in the embodiment of the present application;
FIG. 3 is a flow chart of a resource selection scheme determination method in an embodiment of the present application;
FIG. 4 is a flow chart of another resource selection scheme determination method in an embodiment of the present application;
FIG. 5 is a schematic diagram of a resource selection scheme determination structure in an embodiment of the present application;
fig. 6 is a schematic diagram of a terminal structure in the embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In addition, in the embodiments of the present invention, the words "optionally" or "exemplarily" are used for indicating as examples, illustrations or explanations. Any embodiment or design described as "optionally" or "exemplary" in embodiments of the invention is not to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the words "optionally" or "exemplarily" etc. is intended to present the relevant concepts in a concrete fashion.
For a clearer understanding of the concepts provided herein, some descriptions of concepts related to the present application are illustratively provided for reference. As follows:
when detecting the resources, determining available resources by the following steps: as shown in fig. 1, all candidate resources in the selection window are marked as available, then all candidate resources that are not less than the minimum candidate subframe configured by the higher layer in the available resources in the selection window are set as the first available resources, and the remaining resources except the first available resources in all available resources are excluded, so that the first available resources can form the available resource set.
In two resource selection types of partial probing and random selection of P2X, random selection is a basic characteristic of P2X, and whether P2X supports partial probing needs to be determined by reporting to a network through capability items, where partial probing may be used for traffic transmission in a resource pool of P2X by a vehicle networking (V2X), and the resource selection type of V2X is generally configured as full probing.
Only supporting random selection, only supporting part supportable at P2XIn probing and simultaneously supporting random selection and partial probing, when the transmission resource pool of P2X is configured to support only partial probing, if P2X supports the capability of partial probing, the resource selection method of P2X adopts partial probing; if P2X does not support the capability of partial probing, then P2X cannot send in the currently configured resource pool. When the transmission resource pool of P2X is configured to support random selection only, or P2X uses a special resource pool (explicit pool) of V2X for transmission, the resource selection method of P2X employs random selection. When the sending resource pool of P2X is configured to support random selection and partial detection at the same time, if the capability of P2X only supports random selection, the resource selection method of P2X is random selection; if the P2X capability can support both random selection and partial probing, then P2X either selects partial probing or random selection autonomously depending on the implementation. Wherein, the schematic diagram of partial probing is shown in fig. 2, P2X determines the positions of Y subframes in the resource selection window according to the number Y of minimum candidate subframes (minnumcandedsfs) configured by the network, and monitors the Y subframes
Figure BDF0000016150230000042
And determining whether the current Y subframe is available according to the resource occupation result on the subframe. Where SL is single-sided communication (Sidelink), the set of k values is determined by the parameter gapConditionSensing-r 14 of the network configuration, and the Pstep values are shown in Table 1. In this process, P2X only probes the set of subframes within the probing window determined by Y and k.
TABLE 1
Figure BDF0000016150230000041
Figure BDF0000016150230000051
As can be seen from the above conceptual analysis, when the transmit resource pool of P2X is configured to support both random selection and partial probing, and the capability of P2X supports random selection and partial probing, there is no established scheme to implement P2X to select either partial probing or random selection. Also, when P2X selects Y subframes in the resource selection window, and Y is not less than the network configuration parameter minnumcandidate sf, there is no exact way to select a suitable Y value. When the value Y is selected too large, the probability of obtaining effective resources is higher, but the corresponding power consumption and processing complexity are also increased, and the power consumption of P2X is greatly influenced; when the value of Y is selected too small, the probability of resource collision increases, so that the success rate of transmission decreases.
Based on the foregoing defects, an embodiment of the present application provides a resource selection scheme determining method, which is applied in a scenario where P2X supports both random selection and partial detection, as shown in fig. 3, and the method includes:
s301, obtaining a current channel detection result.
In this embodiment, the Channel detection result may be a value of a Channel Busy Rate (CBR). In this step, Y0 subframes can be selected in the detection window for resource detection, so as to obtain a value K of the current channel CBR, wherein the value range of the CBR is 0-1.
As shown in fig. 1, the detection window is 1000ms, so this step can also be understood as selecting Y0 subframes within 1s for resource detection to obtain the value K of the current CBR.
Wherein, the value range of Y0 is Y0 < Y, and Y is the network configuration parameter.
S302, determining a resource selection scheme according to the current channel detection result.
In this embodiment, the resource selection scheme may be any one of random selection and partial sounding, that is, in the case that P2X supports both random selection and partial sounding, P2X may determine that the resource selection scheme is random selection or partial sounding according to the current channel sounding result, that is, the value of the current channel CBR.
The resource selection scheme determining method provided by the embodiment of the application is to obtain a current channel detection result and determine whether the resource selection scheme is randomly selected or partially detected according to the channel detection result. Therefore, the resource selection scheme can be flexibly selected according to the actual situation of the current channel in a dynamic mode so as to reduce the power consumption of the terminal.
Since the embodiment of the present application may be applied to a scenario where P2X supports both random selection and partial detection, optionally, an implementation manner is further provided in the embodiment of the present application as shown in fig. 4, where before step S301, the embodiment further includes step S3010, as follows:
s3010, receiving a trigger signal, and updating the current resource selection type to simultaneously support random selection and partial detection according to the trigger signal.
P2X updates the current resource selection type to support both random selection and partial probing after receiving the trigger signal. For example, the resource selection type of supporting random selection and partial probing simultaneously for power-on selection may be used, or during operation, the resource selection type may be switched from supporting random selection only to supporting random selection and partial probing simultaneously, or from supporting partial probing only to supporting random selection and partial probing simultaneously.
In performing channel detection, since the initially obtained value of the channel CBR may be inaccurate, this embodiment provides an optional implementation manner in step S301, that is, the value of the channel CBR is initialized, for example, set to 0, and after a period of time T measurement elapses, the current channel detection result is obtained.
For example, assuming that there are n channel detection results obtained in the T period, a method of averaging the n channel detection results, a method of weighted averaging, or the like may be used to obtain the detection result of the current channel. That is, the channel sounding result in step S301 may be the CBR value K of the channel calculated by performing the multiple sounding results after the T-time sounding has elapsed.
Illustratively, the embodiment also provides an alternative implementation manner of the step S302, which is to compare the CBR value K of the current channel with the preset thresholds K0 and K1, and determine the resource selection scheme according to the comparison result. Wherein, K0 and K1 may be artificially set threshold values.
In an example, when the comparison result is that the CBR value K of the current channel is less than K0, indicating that the current channel is relatively idle, the probability of collision of the selected transmission resources is relatively low, and therefore, considering power consumption and processing simplicity, the resource selection scheme is determined as random selection, and the number of subframes detected by the resources is updated to Y0 again, that is, the number of subframes detected by the previous resources is kept unchanged, and Y0 subframes are selected to continue detecting the change of the CBR of the channel;
in another example, when the comparison result indicates that the current channel CBR value K is greater than or equal to K0, indicating that the current channel is busy, the resource selection scheme may be determined as partial sounding to determine available transmission resources, and the number of subframes for resource sounding may also be updated according to the value K of the current channel CBR.
For example, when the number of subframes for subsequent resource sounding is further determined and updated according to the value K of the current channel CBR, the following two optional manners may be adopted:
in a first implementation manner, when the value range of the K value is K0 or more and K1 or less, the number of subframes for resource detection is updated to Y. When K0 is less than or equal to K1, it means that the current channel is busy, but the channel CBR is low, and relatively few resource detection subframes Y can be selected for channel monitoring and channel CBR measurement, so that when data is transmitted subsequently, Y subframes can be selected to select appropriate transmission resources in a partial detection manner.
In a second implementation manner, when the value range of the K value is K > K1, the number of subframes for resource detection is updated to Y1, where Y1 > Y. That is, when K > K1, it indicates that the current channel is relatively busy, the probability of collision of the transmission resources is relatively high, and relatively more sounding subframes Y1 may be selected for channel monitoring and channel CBR measurement. Thus, Y1 subframes can be selected subsequently, and appropriate transmission resources can be selected in a partial sounding manner to increase the success rate of selecting transmission resources.
That is, when the P2X determines that the resource selection scheme is partial detection, the number of subframes for resource detection is not fixed, but is dynamically selected according to the CBR value of the current channel, so that the balance between the success rate of resource selection and the power consumption of the P2X can be considered.
After the number of the subframes of the resource detection is updated in the above manner, the resource detection can be performed according to the updated number of the subframes of the resource detection, the current channel CBR value K2 is obtained, and the previous K value is updated according to the current channel CBR value K2.
In this embodiment, according to the obtained CBR value of the current channel, it is determined that the corresponding resource selection scheme is random selection or partial detection, and the number of subframes for resource detection is updated. Further, according to the updated number of subframes (any one of Y0, Y, Y1) of the resource sounding, the current channel CBR value K2 is determined, and the previous channel CBR value K is updated to K2. Therefore, through the process of repeated iteration and updating, a resource selection scheme matched with the actual condition of the current channel can be dynamically selected in real time, the corresponding number of subframes is determined for resource detection, and the success rate of resource selection, power consumption and processing complexity of P2X can be considered.
In addition, when the network configuration changes, for example, the resource selection type changes to only support random selection, or P2X is powered off, which means that the detection of the channel CBR is not required, the implementation procedure of the above scheme may be exited.
Fig. 5 is a diagram of a resource selection scheme determining apparatus according to an embodiment of the present application, as shown in fig. 5, including: an acquisition module 501 and a determination module 502;
the acquiring module 501 is configured to acquire a current channel detection result;
a determining module, configured to determine a resource selection scheme according to a current channel sounding result, where the resource selection scheme is any one of random selection and partial sounding;
further, the obtaining module is configured to select Y0 subframes in a probing window for resource probing to obtain a current channel busy rate K, where a value range of Y0 is Y0 < Y, and Y is a network configuration parameter.
The determining module is configured to compare the current channel busy rate K with preset thresholds K0 and K1, and determine a resource selection scheme according to a comparison result.
Optionally, the resource selection determining apparatus may further include an updating module 503;
in one example, when the comparison result is that the current channel busy rate K is less than K0, the determining module is configured to determine that the resource selection scheme is random selection, and the updating module is configured to update the number of subframes for resource detection to Y0;
and when the comparison result shows that the current channel busy rate K is more than or equal to K0, the determining module is used for determining that the resource selection scheme is partial detection, and the updating module is used for updating the number of the sub-frames of the resource detection according to the K value.
Further, when the value range of the K value is K0 or more and K1 or less, the updating module is configured to update the number of the subframes for resource detection to Y;
and when the value range of the K value is K > K1, the updating module is used for updating the number of the sub-frames of the resource detection to Y1, wherein Y1 > Y.
In an example, the obtaining module is further configured to perform resource detection according to the updated number of subframes of resource detection, and obtain a current channel busy rate K2;
and the updating module is used for updating the value of K according to the current channel busy rate K2.
Optionally, the resource selection determining apparatus in this embodiment may further include a receiving module 504;
the receiving module is used for receiving the trigger signal;
and the updating module is used for updating the current resource selection type to simultaneously support random selection and partial detection according to the trigger signal.
The resource selection determining device provided by the embodiment of the invention can execute the resource selection scheme determining method provided by the embodiment of the invention, and has corresponding functional modules and beneficial effects of the executing method.
Fig. 6 is a schematic structural diagram of a terminal according to an embodiment of the present invention, as shown in fig. 3, the terminal includes a processor 601, a memory 602, an input device 603, and an output device 604; the number of the processors 601 in the terminal may be one or more, and fig. 6 takes one processor 601 as an example; the processor 601, the memory 602, the input device 603 and the output device 604 in the terminal may be connected by a bus or other means, and fig. 6 exemplifies connection by a bus.
The memory 602 is used as a computer-readable storage medium and can be used for storing software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the resource selection scheme determining method in the embodiment of the present invention (for example, the obtaining module 501, the determining module 502, the updating module 503, and the receiving module 504 in the resource selection scheme determining apparatus). The processor 601 executes various functional applications and data processing of the terminal by running software programs, instructions and modules stored in the memory 602, that is, implements the above-described resource selection scheme determination method.
The memory 602 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory 602 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the memory 602 may further include memory located remotely from the processor 601, which may be connected to a terminal/server through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 603 can be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal. The output device 604 may include a display terminal such as a display screen.
Embodiments of the present invention also provide a storage medium containing computer-executable instructions which, when executed by a computer processor, perform a method for resource selection scheme determination, the method comprising:
acquiring a current channel detection result;
determining a resource selection scheme according to the current channel detection result;
the resource selection scheme is any one of random selection and partial detection.
Of course, the storage medium provided by the embodiment of the present invention contains computer-executable instructions, and the computer-executable instructions are not limited to the method operations described above, and may also perform related operations in the resource selection scheme determination method provided by any embodiment of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
It should be noted that, in the embodiment of the device for determining a resource selection scheme, each unit and each module included in the embodiment are only divided according to functional logic, but are not limited to the above division as long as the corresponding functions can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (6)

1. A method for determining a resource selection scheme, comprising:
when the sending resource pool supports random selection and partial detection at the same time, obtaining a current channel detection result;
determining a resource selection scheme according to the current channel detection result;
the resource selection scheme is any one of random selection and partial detection;
the obtaining of the current channel sounding result includes:
selecting Y0 subframes in a detection window to perform resource detection so as to obtain a current channel busy rate K, wherein the value range of Y0 is Y0 < Y, and Y is a network configuration parameter;
the determining a resource selection scheme according to the current channel sounding result includes:
comparing the current channel busy rate K with preset thresholds K0 and K1;
determining a resource selection scheme according to the comparison result;
the determining a resource selection scheme according to the comparison result includes:
when the comparison result is that the current channel busy rate K is greater than or equal to K0, determining that the resource selection scheme is partial detection, and updating the number of sub-frames of the resource detection according to the K value;
the updating the number of the subframes of the resource detection according to the K value comprises the following steps:
when the value range of the K value is that K is not less than K1 and not more than K0, updating the number of the sub-frames of the resource detection to Y;
when the value range of the K value is K larger than K1, updating the number of the sub-frames of the resource detection to Y1, wherein Y1 is larger than Y;
the method further comprises the following steps:
performing resource detection according to the updated number of the sub-frames of the resource detection to obtain a current channel busy rate K2;
and updating the current channel busy rate according to the current channel busy rate K2.
2. The method of claim 1, wherein determining the resource selection scheme based on the comparison further comprises:
and when the comparison result is that the current channel busy rate K is less than K0, determining that the resource selection scheme is random selection, and updating the subframe number of the resource detection to Y0.
3. The method of claim 1, wherein before said obtaining the current channel sounding result, the method further comprises:
and receiving a trigger signal, and updating the current resource selection type to simultaneously support random selection and partial detection according to the trigger signal.
4. A resource selection determination apparatus, comprising:
the acquisition module is used for acquiring a current channel detection result when the resource pool is sent and random selection and partial detection are simultaneously supported;
a determining module, configured to determine a resource selection scheme according to the current channel sounding result;
the resource selection scheme is any one of random selection and partial detection;
the acquisition module is used for selecting Y0 subframes in a detection window to perform resource detection so as to acquire the current channel busy rate K, wherein the value range of Y0 is Y0 < Y, and Y is a network configuration parameter;
the determining module is used for comparing the current channel busy rate K with preset thresholds K0 and K1 and determining a resource selection scheme according to a comparison result;
the resource selection determining device further comprises an updating module;
when the comparison result is that the current channel busy rate K is greater than or equal to K0, the determining module is used for determining that the resource selection scheme is partial detection, and the updating module is used for updating the subframe number of the resource detection according to the K value;
when the value range of the K value is that K is not less than K1 and not more than K0, the updating module is used for updating the number of the sub-frames of the resource detection to Y;
when the value range of the K value is K > K1, the updating module is used for updating the number of the sub-frames of the resource detection to Y1, wherein Y1 > Y;
the acquisition module is further configured to perform resource detection according to the updated number of subframes of the resource detection, and acquire a current channel busy rate K2;
and the updating module is used for updating the current channel busy rate according to the current channel busy rate K2.
5. A handheld terminal comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the computer program implements the resource selection scheme determination method according to any of claims 1-3.
6. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the resource selection scheme determination method according to any one of claims 1-3.
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