Resource selection method, device and storage medium

Abstract

This application proposes a resource selection method, apparatus, and storage medium. The method includes: a first communication node selecting or excluding resources from a resource set based on a reference signal received power (RSRP) threshold, a first transmit power, and a second transmit power. The technical solution provided in this application fully considers the impact of transmit power on resource selection, thereby avoiding strong interference caused by different communication nodes transmitting data to other communication nodes and ensuring the reliability of V2X communication.

Description

Technical Field

[0001] The present application relates to a wireless communication network, and in particular to a resource selection method, device and storage medium. Background Art

[0002] Vehicle-to-everything (V2X) communications include vehicle-to-vehicle (V2V), vehicle-to-pedestrian (V2P), and vehicle-to-infrastructure (V2I). In V2X communications, available resources are selected for the current terminal based primarily on the reserved resource indications and Reference Signal Received Power (RSRP) of other terminals, eliminating some high-interference resources. This does not take the current terminal's transmit power into account. Because resources reserved by a second terminal with lower transmit power are not excluded, if the current terminal's transmit power is high, other terminals within the reuse distance will experience significant interference from the second terminal's data and signaling. Summary of the Invention

[0003] The present application provides a resource selection method, device, and storage medium, which can solve the problem of interference in data transmission between different terminals using the same resource.

[0004] The present invention provides a resource selection method, including:

[0005] The first communications node selects or excludes resources from the resource set based on a reference signal received power (RSRP) threshold, the first transmit power, and the second transmit power.

[0006] The embodiment of the present application provides a resource selection device, including:

[0007] The resource selection module is used for the first communication node to select or exclude resources from the resource set based on the reference signal received power RSRP threshold, the first transmission power and the second transmission power.

[0008] An embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, any one of the resource selection methods in the embodiments of the present application is implemented.

[0009] With respect to the above embodiments and other aspects of the present application and their implementation, further description is provided in the accompanying drawings, detailed description and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A schematic diagram of transmission interference caused by reserving resources for different user equipments in the prior art;

[0011] Figure 2 A flowchart of a resource selection method provided by an embodiment;

[0012] Figure 3 A flowchart of another resource selection method provided by an embodiment;

[0013] Figure 4 A flowchart of another resource selection method provided by an embodiment;

[0014] Figure 5 A schematic diagram illustrating the principle of resource composition in a resource selection method provided in one embodiment;

[0015] Figure 6 A schematic diagram of reuse distances of different user equipments on the same resource in a resource selection method provided in an embodiment;

[0016] Figure 7 A schematic structural diagram of a resource selection device provided by an embodiment;

[0017] Figure 8 A schematic structural diagram of a device provided in one embodiment. DETAILED DESCRIPTION

[0018] To make the purpose, technical solutions and advantages of this application more clear, the embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of this application can be combined with each other in any way.

[0019] Additionally, in the embodiments of this application, words such as "optionally" or "exemplarily" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "optionally" or "exemplarily" in the embodiments of the present invention should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "optionally" or "exemplarily" is intended to present the relevant concepts in a concrete manner.

[0020] The embodiments of the present application can be applied to V2X communication in a vehicle-to-everything system, and can select appropriate resources for user devices (such as vehicles) in the vehicle-to-everything system for the transmission of information such as data and signaling.

[0021] In a sidelink communication system, when there is business transmission between user equipments (UEs), it does not need to go through the network side, that is, it does not need to be forwarded through the cellular link between the UE and the base station. Instead, it is directly transmitted from the data source UE to the target UE through the sidelink. This mode of direct communication between different UEs has characteristics that are significantly different from the communication mode of traditional cellular systems. Typical applications of sidelink communication include device-to-device (D2D) communication and vehicle-to-everything (V2X) communication. For short-range communication users who can apply sidelink communication, sidelink communication not only saves wireless spectrum resources, but also reduces the data transmission pressure of the core network, can reduce system resource usage, increase the spectrum efficiency of the cellular communication system, reduce communication latency, and greatly save network operating costs.

[0022] Currently, there are two resource selection schemes in sidelink communications: one is scheduling by a central node (such as a base station), which determines the resources used by a user device to transmit data and signaling and notifies the user device through signaling; the other is a contention-based resource selection method, in which the user device monitors the usage of each resource within the resource pool in real time and autonomously selects the corresponding resource within the resource pool based on the monitoring results.

[0023] In a contention-based resource selection method, the user equipment (UE) performs two processes: resource sensing and resource selection. During the sensing phase, the UE receives sidelink control information (SCI) sent by other UEs to determine the reserved resources of other UEs and the RSRP information of these reserved resources. During the resource selection phase, the UE excludes certain high-interference resources based on the sensing results from the sensing phase. For example, within the resource selection window, it excludes resources reserved by other UEs and with RSRP values above a preset RSRP threshold. After resource exclusion, the UE can further select appropriate resources from the remaining resources for V2X data and signaling transmission.

[0024] In this case, the user equipment selects or excludes resources based on the RSRP threshold value, which has nothing to do with the user equipment's transmit power. If a resource is reserved by another terminal with low transmit power, and the RSRP value measured by the user equipment for the resource to be selected is lower than the RSRP threshold value, the user equipment for the resource to be selected will not exclude the resource and can transmit V2X data and signaling on the resource. In the above situation, when the distance between the user equipment for the resource to be selected and the other terminal that reserved the resource is less than a certain threshold, if the transmit power of the user equipment for the resource to be selected is large, the receiving user receiving the V2X data and signaling sent by the other terminal on the reserved resource will be strongly interfered with by the user equipment for the resource to be selected.

[0025] For example, Figure 1 As shown in the figure, if a certain resource is reserved by the terminal UE2 with low transmission power, the terminal UE1 with high transmission power measures that the RSRP value corresponding to the resource reserved by UE2 is lower than the RSRP threshold value when selecting resources. Therefore, UE1 will not exclude the resource and can transmit V2X data and signaling on the resource. If the terminal UE3 is within the multiplexing range of UE1 and UE2, and since the transmission power of UE1 is higher than that of UE2, UE3 will be strongly interfered by UE1 when receiving the V2X data and signaling sent by UE2.

[0026] Figure 2 A flowchart of a resource selection method provided in an embodiment is shown in FIG. Figure 2 As shown, the method provided in this embodiment may include the following steps:

[0027] S210: The first communication node selects or excludes resources from a resource set based on an RSRP threshold, a first transmit power, and a second transmit power.

[0028] In this embodiment, the first communication node refers to a user equipment (UE) that currently needs to select resources for transmitting its own data and / or signaling, such as a vehicle in V2X communication. Specifically, to avoid potential interference between V2X transmissions from different UEs on the same resource, the impact of the transmit power of different UEs on data and signaling transmission needs to be considered. In this embodiment, the first transmit power can be a reference transmit power predefined by the first communication node, a reference transmit power configured by a second communication node, or the actual transmit power of the first communication node, wherein the second communication node refers to a base station in communication, or the first transmit power is the power of the above power per unit frequency domain resource. Meanwhile, the second transmit power refers to a transmit power value notified by control signaling from other terminals, or a power value obtained by correspondingly calculating multiple transmit power values notified by control signaling from multiple other terminals. Alternatively, the second transmit power refers to the average of a transmit power value notified by control signaling from other terminals across multiple frequency domain resources, or a power value obtained by calculating multiple such average values. Because resources reserved by other terminals may include one or more subchannels, and subchannels within each resource may be reserved by different terminals, multiple transmit powers may be included in the resource based on the reservation of subchannels within each resource. Each transmit power refers to a power value notified via control signaling by a terminal that has reserved the resource. The second transmit power may be the maximum value of the multiple transmit powers or a weighted sum of the multiple transmit powers. It should be noted that this embodiment does not impose any restrictions on the power units of the first transmit power and the second transmit power, and they can be either dBm or mW.

[0029] In addition, the resource set refers to all resources contained in the resource selection window of the resource pool configured or pre-configured for the user equipment. In this embodiment, the user equipment performs a sensing operation. During the sensing process, the user equipment performs channel blind detection through the physical sidelink control channel (PSCCH) to obtain SCI information of other terminals (for example, other vehicles other than the user equipment), and then obtains resource reservation information of other terminals indicated in the SCI information in the resource set; at the same time, the user equipment obtains RSRP information of each resource by measuring the reference signal associated with the resources reserved by other terminals, and determines the corresponding second transmit power through the transmit power value notified in the control information of the other terminals.

[0030] Optionally, when selecting resources, the user equipment first calculates the RSRP threshold of each resource in the resource set, and determines the first transmission power related to the user equipment, and at the same time performs a sensing operation to obtain the reserved resource information of other terminals and the RSRP value measured by the user equipment for the reserved resources, and determines the second transmission power corresponding to each resource in the resource set based on the control information received from other terminals. At this time, the RSRP threshold or the RSRP value of the corresponding resource in the resource set is adjusted according to the difference between the first transmission power and the second transmission power, and then the resources that meet the requirements are screened out or the resources that do not meet the requirements are excluded, and suitable resources are continued to be selected from the screened resources or the remaining resources after exclusion as the resources of the user equipment.

[0031] Exemplarily, in this embodiment, the user equipment selects or excludes resources from the resource set based on the RSRP threshold, the first transmission power and the second transmission power. Specifically, it may include: the user equipment selects or excludes resources from the resource set based on the difference between the first transmission power and the second transmission power and the RSRP threshold.

[0032] Specifically, in this embodiment, the RSRP threshold can be compensated by increasing the RSRP value of the corresponding resources in the resource set through the difference between the first transmission power and the second transmission power, thereby screening out resources that meet the requirements or excluding resources that do not meet the requirements, and continuing to select suitable resources from the screened resources or the remaining resources after exclusion as resources for the user equipment.

[0033] For example, when adjusting the RSRP threshold of a resource, the difference between the first transmit power and the second transmit power can be used as the RSRP threshold adjustment value to adjust the RSRP threshold to a value appropriate for the resource. In this embodiment, the adjusted RSRP threshold = RSRP threshold - max{0, first transmit power - second transmit power}. If the first transmit power is less than or equal to the second transmit power, it indicates that the transmit power of the user equipment is not higher than the transmit power of other terminals, and thus does not interfere with the data transmission of other terminals. In this case, there is no need to adjust the RSRP threshold. If the first transmit power is greater than the second transmit power, it indicates that the transmit power of the user equipment is higher than the transmit power of other terminals, which will interfere with the data transmission of other terminals. In this case, by lowering the corresponding RSRP threshold, the user equipment can exclude other terminals even when their RSRP values are low. This eliminates the need for the user equipment and other terminals with lower transmit power to select the same resource for data and signaling transmission, thus preventing the user equipment from causing strong interference to the data transmission of other terminals.

[0034] Furthermore, the adjustment objects in the resource selection scheme include the RSRP threshold and the RSRP value measured by the user equipment for the corresponding resource in the resource set. This embodiment introduces these two situations in detail in the following process:

[0035] The first case is as follows:

[0036] Figure 3 A flowchart of another resource selection method provided in an embodiment, such as Figure 3 As shown, the method provided in this embodiment may include the following steps:

[0037] S310: The first communication node calculates a corresponding compensation value based on the first transmission power and the second transmission power.

[0038] Specifically, after obtaining the first transmission power related to the user equipment and the second transmission power of the corresponding resource in the resource set, the user equipment (first communication node) calculates the difference between the first transmission power and the second transmission power as the compensation value corresponding to the resource, which is used to subsequently adjust the RSRP value measured by the user equipment for the resource.

[0039] S320: The first communication node calculates a corresponding second RSRP value based on the compensation value and the first RSRP value measured by the first communication node.

[0040] In this embodiment, the first RSRP value is the RSRP value measured by the user equipment for the corresponding resource in the resource set. After obtaining the compensation value corresponding to the resource, the compensation value can be added to the first RSRP value corresponding to the resource to obtain the adjusted second RSRP value of the resource.

[0041] S330: The first communication node selects or excludes resources from the resource set based on a comparison result of the second RSRP value and the RSRP threshold.

[0042] Specifically, after obtaining the second RSRP value and RSRP threshold corresponding to each resource in the resource set, the second RSRP value and RSRP threshold corresponding to each resource are compared respectively, thereby screening out resources whose second RSRP value is lower than the RSRP threshold in the resource set, or excluding resources whose second RSRP value is higher than the RSRP threshold, and using the screened resources or the remaining resources after exclusion as resources suitable for the user equipment in this embodiment.

[0043] The second scenario is as follows:

[0044] Figure 4 A flowchart of another resource selection method provided in an embodiment is shown in FIG. Figure 4 As shown, the method provided in this embodiment may include the following steps:

[0045] S410: The first communication node calculates a corresponding compensation value based on the first transmission power and the second transmission power.

[0046] S420: The first communication node compensates the RSRP threshold based on the compensation value.

[0047] Specifically, after obtaining the compensation value of the corresponding resource in the resource set, the user equipment can subtract the compensation value from the RSRP threshold of the resource to lower the RSRP threshold that meets the requirements when selecting resources, that is, to reduce the detection threshold value of the interference level, thereby excluding some resources with lower RSRP values.

[0048] S430: The first communication node selects or excludes resources from the resource set based on a comparison result of the compensated RSRP threshold and the first RSRP value measured by the first communication node.

[0049] In this embodiment, the user equipment compares the compensated RSRP threshold of each resource in the resource set with the first RSRP value measured by the user equipment for the resource, thereby screening out resources whose first RSRP value is lower than or equal to the compensated RSRP threshold, or excluding resources whose first RSRP value is higher than the compensated RSRP threshold, and uses the screened resources or the remaining resources after exclusion as resources suitable for the user equipment in this embodiment.

[0050] Exemplarily, since the first transmit power and the second transmit power exist in multiple forms, at this time, any one of the first transmit power and the second transmit power can be selected for resource selection. In addition to including a predefined reference transmit power, a reference transmit power configured by the base station for the user equipment, or the actual transmit power of the user equipment, the first transmit power can also include other forms. Similarly, in addition to including the maximum value of multiple transmit powers or the weighted sum of multiple transmit powers, the second transmit power can also include other forms. In this embodiment, the combination of the first transmit power and the second transmit power is described as follows for the above-mentioned several known forms through the above-mentioned second method of compensating the RSRP threshold:

[0051] 1) The first transmit power is a predefined reference transmit power, and the second transmit power is a maximum value among multiple transmit powers.

[0052] In this embodiment, the user equipment first obtains a predefined reference transmit power as the first transmit power in this embodiment, and simultaneously performs a sensing operation to determine which subchannels contained in each resource in the resource set are reserved by other terminals, and also determines the RSRP value corresponding to the reserved subchannel under the resource. Figure 5As shown in the figure, the user equipment performs resource selection in units of L consecutive subchannels. L is an integer greater than zero, notified to the physical layer by higher layers. The value of L depends on factors such as the user equipment's transport block size and the corresponding modulation and coding scheme (MCS). The user equipment measures the RSRP value of each subchannel in all resources containing L consecutive subchannels in the resource set.

[0053] Optionally, when subsequently calculating the first RSRP value measured by the user equipment for each resource in the resource set, the RSRP values of all L sub-channels under the resource can be averaged as the first RSRP value measured by the user equipment for the resource, so as to be compared with the compensated RSRP threshold.

[0054] For example, Figure 5 As shown, for a resource x containing L consecutive sub-channels, the user equipment obtains the maximum value P of multiple transmission powers corresponding to the L consecutive sub-channels in the resource x. max , as the second transmission power in this embodiment; In addition, the predefined reference transmission power is P ref , the RSRP threshold in this embodiment is T ref , at this time the compensated RSRP threshold corresponding to resource x is: T ref -(P ref -P max ); or, for Figure 5 L = 4 consecutive subchannels in resource x are reserved by terminals UE3, UE3, UE2 and UE1 respectively. At this time, the multiple transmit powers under the subchannels reserved by UE1, UE2 and UE3 are P1, P2 and P3 respectively. Therefore, the compensated RSRP threshold corresponding to resource x can also be expressed as: T ref -(P ref -max(P1,P2,P3)); and for Figure 5 The second and third subchannels of the L=4 consecutive subchannels in resource y are reserved for UE4. At this time, the transmit power of the subchannel reserved by UE4 is P4. At the same time, when the user equipment performs the sensing operation, it determines that the first and fourth subchannels in resource y are not reserved by other terminals. For the subchannels not reserved by other terminals, the user equipment can assume a fixed transmit power P0=-inf dBm, where -inf represents negative infinity. At this time, the compensated RSRP threshold corresponding to resource y can be expressed as: T ref -(P ref -max(P0, P4)). It should be noted that, for different situations of each resource in the resource set, one of the above methods can be adaptively selected to calculate the RSRP threshold of the resource after compensation.

[0055] 2) The first transmit power is a predefined reference transmit power, and the second transmit power is a weighted sum of multiple transmit powers.

[0056] In this embodiment, the user equipment first obtains a predefined reference transmit power as the first transmit power in this embodiment, and simultaneously calculates the weighted sum of multiple transmit powers corresponding to the sub-channels contained in the corresponding resources in the resource set as the second transmit power in this embodiment.

[0057] For example, Figure 5 The user equipment obtains a weighted sum value P of multiple transmission powers corresponding to the L consecutive sub-channels in the resource x. ave , as the second transmission power in this embodiment; In addition, the reference transmission power predefined by the user equipment is P ref , the RSRP threshold in this embodiment is T ref , at this time the compensated RSRP threshold corresponding to resource x is: T ref -(P ref -P ave ), or in this embodiment, the coefficient of the difference between the first transmit power and the second transmit power can be adjusted. For example, the compensated RSRP threshold corresponding to resource x can also be expressed as: T ref -(P ref -P ave ) / 2.

[0058] Optionally, before calculating the weighted sum of multiple transmission powers, it can also include: the user equipment calculates the weight of the transmission power corresponding to the target terminal in the multiple transmission powers based on the ratio of the number of subchannels of the target terminal in the target resource to the total number of subchannels of the target resource.

[0059] Among them, the target resource refers to any resource in the resource set, and the target terminal refers to any other terminal that reserves resources in the target resource. At this time, the total number of sub-channels contained in the target resource and the number of sub-channels reserved by the target terminals in the target resource are first determined. At this time, the ratio of the number of sub-channels of each target terminal to the total number of sub-channels of the target resource is calculated respectively, and then the weight of the transmission power corresponding to the target terminal in the multiple transmission powers of the resource is obtained. Subsequently, the weighted sum value is calculated based on the multiple transmission powers and their corresponding weights as the second transmission power in this embodiment.

[0060] For example, Figure 5A resource x including L=4 consecutive subchannels is included, and the consecutive subchannels included therein are reserved by terminals UE3, UE3, UE2, and UE1, respectively. At this time, the multiple transmit powers of UE1, UE2, and UE3 under the reserved subchannels are P1, P2, and P3, respectively. In this embodiment, P1, P2, and P3 refer to the ratio of the power indicated by UE1, UE2, and UE3 in the control information to the number of subchannels reserved by UE1, UE2, and UE3. At this time, the unit format of P1, P2, and P3 is dBm, which needs to be converted into the mw unit format in this embodiment. The multiple transmit powers after conversion are P′1, P′2, and P′3, respectively. Then, a weighted sum is performed on the multiple transmit powers after conversion. If the weights corresponding to the multiple transmit powers under the subchannels reserved by UE1, UE2, and UE3 are α1, α2, and α3, respectively, the compensated RSRP threshold corresponding to resource x can be expressed as: T ref -(P ref -10lg(α1*P′1+α2*P′2+α3*P′3)), and according to Figure 5 The number of subchannels reserved by UE1, UE2 and UE3 in resource x and the total number of subchannels in resource x can be determined as α1 = 1 / L, α2 = 1 / L and α3 = 2 / L; and for Figure 5 The second and third subchannels of the L=4 consecutive subchannels in resource y are reserved for UE4. At this time, the transmit power of the subchannel reserved by UE4 is P4 dBm. At the same time, the user equipment determines that the first and fourth subchannels in resource y are not reserved by other terminals when performing the sensing operation. For the subchannels not reserved by other terminals, the user equipment can assume a fixed transmit power P0=0 dBm. At this time, P4 dBm and P0 dBm are converted to P′4 mw and P′0 mw respectively, and their corresponding weights are α4 and α0 respectively. At this time, the compensated RSRP threshold corresponding to resource y can be expressed as: T ref -(P ref -10lg(α4*P′4+α0*P′0)), and according to Figure 5 The number of subchannels reserved by UE4 in resource y, the number of subchannels not reserved by other terminals, and the total number of subchannels in resource y can determine α4=2 / L and α0=2 / L.

[0061] 3) The first transmit power is a reference transmit power configured by the base station for the user equipment, and the second transmit power is a maximum value among multiple transmit powers.

[0062] 4) The first transmit power is a reference transmit power configured by the base station for the user equipment, and the second transmit power is a weighted sum of multiple transmit powers.

[0063] 5) The first transmit power is the actual transmit power of the user equipment, and the second transmit power is the maximum value among multiple transmit powers.

[0064] 6) The first transmit power is the actual transmit power of the user equipment, and the second transmit power is a weighted sum of multiple transmit powers.

[0065] For the above situations 3), 4), 5) and 6), the second transmit power is calculated in the same way as in 1) and 2) above, and the first transmit power is simply replaced from the reference transmit power predefined by the user equipment to the reference transmit power configured by the base station for the user equipment or the actual transmit power of the user equipment. The actual calculation process of the compensated RSRP threshold of the corresponding resource in the resource set is the same as that described in 1) and 2) above, and will not be described in detail here.

[0066] Similarly, for each resource in the resource set, the RSRP threshold after compensation of each resource can be calculated by the same method as in the above example. At the same time, after calculating the compensated RSRP threshold based on the above method, there is no restriction on further modifying the above compensated RSRP threshold through some other methods. Subsequently, the final compensated RSRP threshold is compared with the first RSRP value measured by the user equipment for the corresponding resource, and then the resource is selected or excluded from the resource set.

[0067] In addition, in this embodiment, after the user equipment obtains the compensated RSRP threshold corresponding to each resource containing L consecutive sub-channels in the resource set in the above manner, it can filter out resources whose first RSRP value measured by the user equipment for the resource is lower than or equal to the compensated RSRP threshold, or exclude resources whose first RSRP value is higher than the compensated RSRP threshold, and use the filtered resources or the remaining resources after exclusion as the resource set A of the user equipment in this embodiment. Resource set A is the candidate resource set of the user equipment, and the user equipment selects a suitable resource from the candidate resource set (resource set A) for transmitting V2X data and signaling; or, because the user equipment can also average the received signal energy of each sub-channel contained in the corresponding resource in the resource set when performing the sensing operation, to obtain the received signal strength indication (Received Signal Strength Indication) corresponding to the resource. Therefore, after the user equipment obtains resource set A, it can further sort the resources in resource set A by RSSI, and continue to select a certain number of resources in resource set A in order of RSSI energy from low to high to form resource set B. At this time, resource set B is used as the candidate resource set of the user equipment, and the user equipment selects appropriate resources from the candidate resource set (resource set B) for transmitting V2X data and signaling.

[0068] Furthermore, before the user equipment selects or excludes resources from the resource set based on the RSRP threshold, the first transmission power and the second transmission power, this embodiment may also include: the user equipment receives side link control information of other user equipment, obtains the resources reserved by other user equipment in the resource set and the transmission power of other user equipment; reports the transmission power of the user equipment and other user equipment to the base station, and the base station schedules resources based on the transmission power of the user equipment and other user equipment.

[0069] Specifically, the user equipment performs a sensing operation. During the sensing process, the user equipment obtains resource reservation information of other user equipment indicated in the SCI information by receiving SCI information of other user equipment; and the user equipment obtains RSRP information of the reserved resources by measuring the reference signals of other user equipment.

[0070] Through the above process, the user equipment can obtain the transmit power of relevant resources within a resource selection window. Furthermore, using subchannels as frequency-domain resource units, the user equipment can report the transmit power of relevant resources within a time window to the base station. This means reporting the transmit power of the user equipment and other user equipment to the base station. The length of the time window can be instructed by the base station or pre-configured. After obtaining the transmit power of the user equipment and other user equipment, the base station determines resource scheduling based on the transmit power of each user equipment and the distance between different user equipment, thereby determining the resource reuse distance between different user equipment.

[0071] At this time, the reuse distance between user equipments with different transmission powers is described. Figure 6 A schematic diagram of the reuse distance of different user devices on the same resource in the resource selection method provided in one embodiment shows that when the transmission power of both user devices is large, the required reuse distance is longer; when the transmission power of one of the two user devices is large and the transmission power of the other user device is small, the required reuse distance of the two user devices is long; when the transmission power of both user devices is very small, the two user devices can perform close-range resource reuse.

[0072] In this embodiment, if a resource is reserved by a second user device with low transmit power, the base station can select another user device that is closer to the second user device and has lower transmit power and schedule it on that resource. This allows for close-range resource reuse between the two user devices with lower transmit power, improving resource utilization efficiency without introducing severe interference. Conversely, if a resource is reserved by a third user device with higher transmit power, the base station can select another user device that is farther away from the third user device and schedule it on that resource. This avoids the severe interference caused by close-range resource reuse, thereby optimizing the resource reuse distance between different user devices, ensuring resource reuse efficiency between different user devices while reducing transmission interference between different user devices and ensuring the reliability of V2X communication.

[0073] In the resource selection method provided in the embodiment of the present application, the user equipment selects or excludes resources from the resource set based on the RSRP threshold, the first transmit power, and the second transmit power, fully considering the impact of the transmit power on resource selection, thereby avoiding strong interference caused by different terminals transmitting data to other terminals and ensuring the reliability of V2X communication.

[0074] Figure 7 A schematic diagram of a resource selection device according to an embodiment is provided. Figure 7 As shown, the apparatus provided by this embodiment includes: a resource selection module 710.

[0075] The resource selection module 710 is configured for the first communication node to select or exclude resources from a resource set based on the RSRP threshold, the first transmit power, and the second transmit power.

[0076] Furthermore, the first transmit power may be a reference transmit power predefined by the first communication node.

[0077] Furthermore, the first transmit power may be a reference transmit power configured by the second communication node for the first communication node.

[0078] Furthermore, the first transmission power may be the actual transmission power of the first communication node.

[0079] Furthermore, the second transmit power may be a maximum value among multiple transmit powers.

[0080] Furthermore, the second transmit power may be a weighted sum of multiple transmit powers.

[0081] Furthermore, the resource selection device may further include:

[0082] A weight calculation module is used for the first communication node to calculate the weight of the transmission power corresponding to the target communication node in the multiple transmission powers based on the ratio of the number of sub-channels of the target communication node in the target resource to the total number of sub-channels of the target resource.

[0083] Furthermore, the resource selection module 710 may be specifically configured to:

[0084] The first communication node selects or excludes resources from a resource set according to a difference between the first transmit power and the second transmit power and the RSRP threshold.

[0085] Furthermore, the resource selection module may be specifically used to:

[0086] The first communication node calculates a corresponding compensation value based on the first transmit power and the second transmit power;

[0087] The first communication node calculates a corresponding second RSRP value based on the compensation value and the first RSRP value measured by the first communication node;

[0088] The first communication node selects or excludes resources from the resource set based on a comparison result of the second RSRP value and the RSRP reference threshold.

[0089] Furthermore, the resource selection module is specifically configured to:

[0090] The first communication node calculates a corresponding compensation value based on the first transmit power and the second transmit power;

[0091] The first communication node compensates the RSRP threshold based on the compensation value;

[0092] The first communication node selects or excludes resources from the resource set based on a comparison result of the compensated RSRP threshold and a first RSRP value measured by the first communication node.

[0093] Furthermore, the resource selection device may further include:

[0094] A receiving module, configured for the first communication node to receive side link control information of other communication nodes, and obtain resources reserved by other communication nodes in the resource set and transmit power of other communication nodes;

[0095] The reporting module is used to report the transmission power of the first communication node and the other communication nodes to the second communication node, and the second communication node schedules resources based on the transmission power of the first communication node and the other communication nodes.

[0096] The resource selection device provided in the above embodiments can execute the resource selection method provided in any embodiment of the present application, and has the corresponding functional modules and beneficial effects of the execution method.

[0097] Figure 8 This is a schematic diagram of the structure of a device provided in one embodiment. Figure 8 As shown, the device includes a processor 80, a storage device 81 and a communication device 82; the number of processors 80 in the device can be one or more. Figure 8 In the embodiment, a processor 80 is used as an example; the processor 80, the storage device 81 and the communication device 82 of the device can be connected by a bus or other means. Figure 8 The bus connection is taken as an example.

[0098] The storage device 81, as a computer-readable storage medium, can be used to store software programs, computer executable programs, and modules, such as the module corresponding to the resource selection method in one embodiment of the present application (for example, the resource selection module 710 used in the resource selection device). The processor 80 executes the software programs, instructions, and modules stored in the storage device 81 to execute various functional applications and data processing of the device, thereby implementing the above-mentioned resource selection method.

[0099] The storage device 81 may primarily include a program storage area and a data storage area. The program storage area may store an operating system and at least one application required for a function; the data storage area may store data created based on the use of the terminal, etc. Furthermore, the storage device 81 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state memory device. In some instances, the storage device 81 may further include a memory remotely located relative to the processor 80, and such remote memory may be connected to the device via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0100] The communication device 82 may be used to implement a network connection or a mobile data connection.

[0101] The device provided in the above embodiment can be used to execute the resource selection method provided in any embodiment of the present application, and has the corresponding functional modules and beneficial effects of the execution method.

[0102] An embodiment of the present application also provides a storage medium containing computer-executable instructions, which, when executed by a computer processor, are used to execute a resource selection method, the method comprising: a user equipment selecting or excluding resources from a resource set based on a reference signal received power RSRP threshold, a first transmit power, and a second transmit power.

[0103] The above description is merely an exemplary embodiment of the present application and is not intended to limit the scope of protection of the present application.

[0104] It will be appreciated by those skilled in the art that the term user equipment encompasses any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser or a car-mounted mobile station.

[0105] In general, various embodiments of the present application may be implemented in hardware or dedicated circuits, software, logic, or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device, although the present application is not limited thereto.

[0106] Embodiments of the present application may be implemented by executing computer program instructions by a data processor of a mobile device, for example, in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

[0107] The block diagram of any logical flow in the accompanying drawings of the present application can represent program steps, or can represent interconnected logical circuits, modules and functions, or can represent a combination of program steps and logical circuits, modules and functions. The computer program can be stored on a memory. The memory can have any type suitable for the local technical environment and can be implemented using any suitable data storage technology, such as but not limited to read-only memory (ROM), random access memory (RAM), optical memory device and system (digital versatile disc DVD or CD optical disc) etc. Computer-readable media can include non-transient storage media. The data processor can be any type suitable for the local technical environment, such as but not limited to a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a programmable logic device (FPGA) and a processor based on a multi-core processor architecture.

[0108] The above description of exemplary embodiments of the present application has been provided by way of exemplary and non-limiting examples. However, various modifications and adaptations to the above embodiments will be apparent to those skilled in the art, when considered in conjunction with the accompanying drawings and claims, without departing from the scope of the present invention. Therefore, the proper scope of the present invention will be determined by reference to the claims.

Claims

1. A resource selection method, characterized in that: include: The first communication node selects or excludes resources from the resource set based on the reference signal received power RSRP threshold, the first transmit power, and the second transmit power; The first transmit power is the actual transmit power of the first communication node; the second transmit power is the weighted sum of multiple transmit powers; The first communication node calculates a weight of a transmit power corresponding to the target communication node among the multiple transmit powers based on a ratio of the number of subchannels reserved by the target communication node in the target resource to the total number of subchannels of the target resource; The first communication node selects or excludes resources from a resource set based on a reference signal received power (RSRP) threshold, a first transmit power, and a second transmit power, including: By calculating the difference between the first transmission power and the second transmission power of the first communication node, subtracting the RSRP threshold from the calculated difference, calculating the compensated RSRP threshold, and selecting or excluding resources in the resource set according to the compensated RSRP threshold.

2. The resource selection method according to claim 1, characterized in that: Alternatively, the first communications node selects or excludes resources from a resource set based on a reference signal received power (RSRP) threshold, the first transmit power, and the second transmit power, including: The first communication node calculates a corresponding compensation value based on the first transmit power and the second transmit power; The first communication node calculates a corresponding second RSRP value based on the compensation value and the first RSRP value measured by the first communication node; The first communication node selects or excludes resources from the resource set based on a comparison result of the second RSRP value and the RSRP threshold.

3. The resource selection method according to claim 1, characterized in that: Alternatively, the first communications node selects or excludes resources from a resource set based on a reference signal received power (RSRP) threshold, the first transmit power, and the second transmit power, including: The first communication node calculates a corresponding compensation value based on the first transmit power and the second transmit power; The first communication node compensates the RSRP threshold based on the compensation value; The first communication node selects or excludes resources from the resource set based on a comparison result of the compensated RSRP threshold and a first RSRP value measured by the first communication node.

4. The resource selection method according to claim 1, characterized in that: Before the first communications node selects or excludes resources from the resource set based on the reference signal received power (RSRP) threshold, the first transmit power, and the second transmit power, the method further includes: The first communication node receives side link control information from other communication nodes, and obtains resources reserved by other communication nodes in the resource set and transmit power of other communication nodes; The transmission power of the first communication node and the other communication nodes is reported to the second communication node, and the second communication node schedules resources based on the transmission power of the first communication node and the other communication nodes.

5. A resource selection device, characterized in that: include: A resource selection module, configured for the first communication node to select or exclude resources from a resource set based on a reference signal received power RSRP threshold, a first transmit power, and a second transmit power; The first transmit power is the actual transmit power of the first communication node; the second transmit power is the weighted sum of multiple transmit powers; a weight calculation module, configured for the first communication node to calculate the weight of the transmit power corresponding to the target communication node among the multiple transmit powers based on the ratio of the number of subchannels reserved by the target communication node in the target resource to the total number of subchannels of the target resource; The resource selection module is specifically used to: By calculating the difference between the first transmission power and the second transmission power of the first communication node, subtracting the RSRP threshold from the calculated difference, calculating the compensated RSRP threshold, and selecting or excluding resources in the resource set according to the compensated RSRP threshold.

6. The resource selection device according to claim 5, characterized in that: Alternatively, the resource selection module is specifically configured to: The first communication node calculates a corresponding compensation value based on the first transmit power and the second transmit power; The first communication node calculates a corresponding second RSRP value based on the compensation value and the first RSRP value measured by the first communication node; The first communication node selects or excludes resources from the resource set based on a comparison result of the second RSRP value and the RSRP threshold.

7. The resource selection device according to claim 5, characterized in that: Alternatively, the resource selection module is specifically configured to: The first communication node calculates a corresponding compensation value based on the first transmit power and the second transmit power; The first communication node compensates the RSRP threshold based on the compensation value; The first communication node selects or excludes resources from the resource set based on a comparison result of the compensated RSRP threshold and a first RSRP value measured by the first communication node.

8. The resource selection device according to claim 5, characterized in that: Also includes: A receiving module, configured for the first communication node to receive side link control information of other communication nodes, and obtain resources reserved by other communication nodes in the resource set and transmit power of other communication nodes; The reporting module is used to report the transmission power of the first communication node and the other communication nodes to the second communication node, and the second communication node schedules resources based on the transmission power of the first communication node and the other communication nodes.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the resource selection method according to any one of claims 1 to 4 is implemented.

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