WO2019052249A1 - 多载波下的资源选择方法、装置及计算机设备、存储介质 - Google Patents

多载波下的资源选择方法、装置及计算机设备、存储介质 Download PDF

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Publication number
WO2019052249A1
WO2019052249A1 PCT/CN2018/092245 CN2018092245W WO2019052249A1 WO 2019052249 A1 WO2019052249 A1 WO 2019052249A1 CN 2018092245 W CN2018092245 W CN 2018092245W WO 2019052249 A1 WO2019052249 A1 WO 2019052249A1
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Prior art keywords
resource
available
transmission
resources
selecting
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PCT/CN2018/092245
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English (en)
French (fr)
Inventor
李晨鑫
赵锐
赵丽
林琳
冯媛
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电信科学技术研究院有限公司
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Priority to US16/648,235 priority Critical patent/US11246135B2/en
Priority to EP18855978.5A priority patent/EP3687241A4/en
Publication of WO2019052249A1 publication Critical patent/WO2019052249A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0808Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453Resources in frequency domain, e.g. a carrier in FDMA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signaling for the administration of the divided path
    • H04L5/0096Indication of changes in allocation
    • H04L5/0098Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/02Selection of wireless resources by user or terminal

Definitions

  • the present application relates to the field of wireless communication technologies, and in particular, to a resource selection method and apparatus under multiple carriers, a computer device, and a storage medium.
  • LTE Long Term Evolution
  • V2X Vehicle to Everything
  • Figure 1 is a schematic diagram of resource allocation timing, where m is the service packet arrival time/resource selection time, T1 and T2 are the upper and lower edges of the resource selection window, d is the time at which the resource is transmitted, and P*i is the service period, such as
  • the current selection of transmission resources on the LTE-V2X single carrier includes the following steps:
  • the first type is in the sensing window.
  • the user equipment (UE) sends the service packet that cannot be sent by other UEs on the sending subframe.
  • the subframe is called a skip subframe. You need to assume this.
  • the other UEs in the subframe reserve the next resource in all cycles configured by the system, and the reserved resources overlap with the candidate subframes, or are transmitted with 1, 2, ..., 10 counters (counters) after the candidate subframes. Subframe overlap, the above candidate subframe needs to be excluded.
  • the second type is that the SA (Scheduling Assignment) sent by other UEs is monitored in the sensing window, according to the period and resource reservation information learned from the SA, if the reserved resources overlap with the candidate resources, or with the candidate subframes.
  • the threshold is increased by 3 dB, and the elimination process is re-executed until the remaining resource ratio reaches or exceeds 20%.
  • the SPS counter (SPS counter; SPS: semi-persistent schedule, semi-persistent scheduling) for selecting the resource scheduling is set.
  • the existing LTE-V2X resource selection method has at least one of the following problems:
  • the existing resource selection mechanism is only for the single-carrier resource selection, and cannot avoid the more serious half-duplex effect on the multi-carrier caused by the carrier aggregation introduction (the loss of more reception opportunities due to the increase of the number of skip subframes);
  • the existing resource selection mechanism is only for resource selection of a single carrier, and does not consider the effect of each transmission power reduction if multiple carriers are transmitted in the same subframe;
  • the present application provides a resource selection method and apparatus under multi-carrier, and a computer device and a storage medium, which are used to perform service transmission on multiple carriers after carrier aggregation is introduced, which will cause a more significant half-duplex effect and thus cause reception opportunities. Loss and affect system performance issues.
  • a resource selection method under multiple carriers including:
  • the available resource collection is obtained according to the sensing result
  • selecting the sending resource in the set of available resources is to sort the S-RSSI, and selecting the sending resource in the set of available resources with a lower S-RSSI.
  • the available resource collection is obtained after the exclusion, including:
  • the ratio of the remaining resources is calculated according to the size of each service packet. If the ratio does not reach or exceed the configured ratio threshold, the receiving power threshold is incremented by a preset value and the exclusion process is re-executed. After the exclusion, the proportion of the remaining resources calculated according to the size of each service packet respectively reaches or exceeds the configured proportional threshold;
  • the available resources when all reach or exceed the configured proportional threshold are taken as the set of available resources.
  • the available resource collection is obtained after the exclusion, including:
  • the number of available subframes is determined. If the number of available subframes or the ratio of available subframes to all candidate resource subframes does not reach or exceed the configured number threshold or the proportional threshold, the power threshold is received each time. After the value is increased by the preset value, the exclusion process is re-executed until after the exclusion, the number of available subframes or the ratio of available subframes to all candidate resource subframes reaches or exceeds the configured number threshold or the proportional threshold.
  • a frame is a subframe that can satisfy all service packets that can be sent simultaneously;
  • the available resources when the configured number threshold or the proportional threshold is reached or exceeded are taken as the set of available resources.
  • selecting a sending resource in the available resource set includes:
  • each service packet is selected from the available sending resources, including:
  • the transmission resource is randomly selected from the priority resource subsets, wherein the resource is calculated according to all the transmission times in the subframe where the transmission resource is located, and the available transmission power or the number of transmissions in the same subframe is calculated, and the available transmission power is lower than or Equivalent to the configured reliable transmit power threshold, or the number of transmissions in the same subframe does not exceed the maximum number of transmissions in the same subframe configured;
  • the transmission resource is determined from the retransmission resource, where the available transmit power on the resource is lower than the configured reliable transmit power threshold or the number of transmissions on the resource is greater than the configured maximum number of transmissions.
  • the method when randomly selecting the sending resource from the preferred resource subset, the method further includes:
  • the transmission resource is randomly selected in the subset of available resources other than the priority subset of resources.
  • the method when selecting to retransmit the resource, the method further includes:
  • the retransmission resource is randomly selected in the available resource subset other than the priority resource subset.
  • the order is determined according to the size of the frequency domain resource occupied by the sending service packet and/or the carrier number corresponding to the sending service packet.
  • selecting a sending resource in the available resource set includes:
  • the transmission resources are selected from the available transmission resources for each of the other service packets.
  • each of the other service packets selects a sending resource from the available sending resources, including:
  • the service packet Determining the maximum number of transmissions allowed in the same subframe when the transmission power is not lower than the configured reliable transmission power according to the configuration or calculation. If the maximum number of transmission times has been exceeded in the subframe of the currently allocated resource, the current The service packet reselects other available subframes that are not selected for transmission resource allocation.
  • the S-RSSI power ordering for ordering is an RSSI linear mean of all remaining resources on the subframe.
  • the SPS counter for performing resource scheduling is set within the configured semi-persistent scheduling SPS counter range, and the SPS counter is randomly selected as the SPS counter of all service packets selected by the current resource.
  • a computer device including a memory, a processor, and a computer program stored on the memory and operable on the processor, and the processor executes the computer program according to the following method to implement multi-carrier Resource selection:
  • the available resource collection is obtained according to the sensing result
  • selecting the sending resource in the set of available resources is to sort the S-RSSI, and selecting the sending resource in the set of available resources with a lower S-RSSI.
  • the available resource collection is obtained after the exclusion, including:
  • the ratio of the remaining resources is calculated according to the size of each service packet. If the ratio does not reach or exceed the configured ratio threshold, the receiving power threshold is incremented by a preset value and the exclusion process is re-executed. After the exclusion, the proportion of the remaining resources calculated according to the size of each service packet respectively reaches or exceeds the configured proportional threshold;
  • the available resources when all reach or exceed the configured proportional threshold are taken as the set of available resources.
  • the available resource collection is obtained after the exclusion, including:
  • the number of available subframes is determined. If the number of available subframes or the ratio of available subframes to all candidate resource subframes does not reach or exceed the configured number threshold or the proportional threshold, the power threshold is received each time. After the value is increased by the preset value, the exclusion process is re-executed until after the exclusion, the number of available subframes or the ratio of available subframes to all candidate resource subframes reaches or exceeds the configured number threshold or the proportional threshold.
  • a frame is a subframe that can satisfy all service packets that can be sent simultaneously;
  • the available resources when the configured number threshold or the proportional threshold is reached or exceeded are taken as the set of available resources.
  • selecting a sending resource in the available resource set includes:
  • each service packet is selected from the available sending resources, including:
  • the transmission resource is randomly selected from the priority resource subsets, wherein the resource is calculated according to all the transmission times in the subframe where the transmission resource is located, and the available transmission power or the number of transmissions in the same subframe is calculated, and the available transmission power is lower than or Equivalent to the configured reliable transmit power threshold, or the number of transmissions in the same subframe does not exceed the maximum number of transmissions in the same subframe configured;
  • the transmission resource is determined from the retransmission resource, where the available transmit power on the resource is lower than the configured reliable transmit power threshold or the number of transmissions on the resource is greater than the configured maximum number of transmissions.
  • the method when randomly selecting the sending resource from the preferred resource subset, the method further includes:
  • the transmission resources are randomly selected in the available resource subsets other than the preferential resource subset.
  • the method when selecting to retransmit the resource, the method further includes:
  • the retransmission resource is randomly selected in the available resource subset other than the priority resource subset.
  • the order is determined according to the size of the frequency domain resource occupied by the sending service packet and/or the carrier number corresponding to the sending service packet.
  • selecting a sending resource in the available resource set includes:
  • the transmission resources are selected from the available transmission resources for each of the other service packets.
  • each of the other service packets selects a sending resource from the available sending resources, including:
  • the service packet Determining the maximum number of transmissions allowed in the same subframe when the transmission power is not lower than the configured reliable transmission power according to the configuration or calculation. If the maximum number of transmission times has been exceeded in the subframe of the currently allocated resource, the current The service packet reselects other available subframes that are not selected for transmission resource allocation.
  • the S-RSSI power ordering for ordering is an RSSI linear mean of all remaining resources on the subframe.
  • the SPS counter for performing resource scheduling is set within the configured semi-persistent scheduling SPS counter range, and the SPS counter is randomly selected as the SPS counter of all service packets selected by the current resource.
  • a computer readable storage medium storing a computer program for performing a resource selection method under multi-carrier is provided in the embodiment of the present application.
  • a resource selection apparatus under multiple carriers including:
  • a carrier determining module configured to determine at least one candidate carrier according to a resource occupancy exclusion result on each carrier
  • An available resource determining module configured to: after the resources on the candidate carrier are made available, obtain an available resource set according to the sensing result;
  • a sending resource determining module configured to select a sending resource in the set of available resources, and set an SPS counter for performing resource scheduling.
  • the service transmission on the multi-carrier after the carrier aggregation is introduced will cause a more significant half-duplex effect, thereby causing the loss of the reception opportunity and affecting the system performance problem, which is provided in the embodiment of the present application.
  • the same SPS counter is set to ensure the resources of the segmentation service packet due to resource selection for multiple segment service packets from the same service packet.
  • the reselection timing is consistent, which provides a resource selection scheme that minimizes the impact of half-duplex, reduces the impact of loss of reception opportunities, and the number of skip subframes, while avoiding the problem of excessive power allocation caused by simultaneous transmission of multiple service packets. .
  • FIG. 2 is a schematic diagram of a distribution of a skip subframe in the embodiment of the present application.
  • FIG. 3 is a schematic flowchart of implementing a resource selection method under multiple carriers in an embodiment of the present application
  • FIG. 4 is a schematic diagram of a resource allocation implementation process in an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a resource selection apparatus under multi-carrier according to an embodiment of the present application.
  • V2X carrier aggregation supports two scenarios of multi-carrier transmission service packets:
  • Scenario 1 The service packets that are independent of each other are sent on different carriers.
  • FIG. 2 is a schematic diagram of a distribution of a skip subframe.
  • the reliability of the system may be affected by the half duplex.
  • the UE performs transmission on a certain carrier of the adjacent frequency band, and the service packet cannot be received on other carriers.
  • a skip subframe such a subframe in the sensing window is called a skip subframe, and corresponds to the resource selection window. All resources of the corresponding subframe cannot be used as candidate resources.
  • the UE performs traffic transmission on one of the carriers, the maximum allowed transmission power can be used, but if the UE is transmitting multiple services on different carriers in the same subframe, for example: MAC PDU (MAC: Medium) Access Control, media access control; PDU: Protocol Data Unit, the maximum transmit power is shared, so that the transmit power is reduced to a certain extent for each transmission. Therefore, if the multi-carrier is reasonably selected.
  • MAC PDU Medium
  • PDU Protocol Data Unit
  • FIG. 3 is a schematic flowchart of an implementation process of a resource selection method under multiple carriers, as shown in the figure, which may include:
  • Step 301 Determine at least one candidate carrier according to a resource occupancy exclusion result on each carrier.
  • the determining candidate carriers (sets) may be selected according to at least one of a service attribute, a service priority, a carrier load, and a resource occupancy exclusion result on each carrier in the available carrier set.
  • Step 302 After the resources on the candidate carrier are made available, the available resources collection is obtained according to the sensing result.
  • the exclusion of the resources may be performed independently on a single carrier or jointly performed on multiple carriers.
  • Step 303 Select a sending resource in the set of available resources, and set an SPS counter for performing resource scheduling.
  • selecting the sending resource in the set of available resources is to sort the S-RSSI, and selecting the sending resource in the set of available resources with a lower S-RSSI.
  • the centralized Select a sending resource on fewer subframes;
  • S-RSSI power elimination is performed in the remaining available subframe sets after the exclusion, and in the available sub-frame subsets with lower S-RSSI power, the selection is performed under the condition that the service packet transmission power is not lower than the minimum reliable power. Select a send resource on fewer subframes.
  • the SPS counter of the resource scheduling is set.
  • the resource is performed by using a subframe or a short subframe as a time domain resource unit.
  • the subframe mentioned is used to illustrate the subframe, and may be replaced with other time domain resource units such as a short subframe.
  • the optional obtaining of the set of available resources after the exclusion of the sensing result in step 302 may include the following two methods:
  • the first one is:
  • the ratio of the remaining resources is calculated according to the size of each service packet. If the ratio does not reach or exceed the configured ratio threshold, the receiving power threshold is incremented by a preset value and the exclusion process is re-executed. After the exclusion, the proportion of the remaining resources calculated according to the size of each service packet respectively reaches or exceeds the configured proportional threshold;
  • the available resources when all reach or exceed the configured proportional threshold are taken as the set of available resources.
  • the available resource set that satisfies the proportional requirement may be determined as follows:
  • the candidate resources corresponding to the skip subframe may be excluded by using the existing mechanism.
  • the PSSCH-RSRP threshold is increased by 3 dB.
  • the received power is set to the PSSCH-RSRP threshold, and the increased preset value is set to 3 dB
  • the exclusion process is re-executed until the remaining resources are calculated according to the size of each service packet.
  • the ratio reaches or exceeds the (pre)configured proportional threshold.
  • the second is:
  • the number of available subframes is determined. If the number of available subframes or the ratio of available subframes to all candidate resource subframes does not reach or exceed the configured number threshold or the proportional threshold, the power threshold is received each time. After the value is increased by the preset value, the exclusion process is re-executed until after the exclusion, the number of available subframes or the ratio of available subframes to all candidate resource subframes reaches or exceeds the configured number threshold or the proportional threshold.
  • a frame is a subframe that can satisfy all service packets that can be sent simultaneously;
  • the available resources when the configured number threshold or the proportional threshold is reached or exceeded are taken as the set of available resources.
  • the available subframe set that satisfies the proportional requirement may be determined as follows:
  • the candidate resources corresponding to the skip subframe may be excluded by using the existing mechanism.
  • the PSSCH-RSRP threshold is increased by 3 dB (here, the received power is defined as the PSSCH-RSRP gate according to the conventional conventional implementation.
  • the limit value, the increased preset value is set to 3 dB), and the exclusion process is re-executed until the number of available subframes or the ratio of available subframes to all candidate resource subframes reaches or exceeds the (pre)configured number threshold or proportional threshold. until.
  • the selection of the transmission resource is optional.
  • three modes are provided, which are separately described below.
  • various configurations are involved, such as the lowest available power of the configuration ratio, the configured reliable transmit power, the configured reliable transmit power threshold, and the configured maximum number of transmissions. It is easy to understand that the configuration can come from pre-configuration and In the embodiment of the present application, since the configuration itself is not involved in the configuration, the configuration is mainly performed in a pre-configured manner, and the expression is not limited to a pre-configured mode. Pre-) configuration expression.
  • Each of the service packets is selected to send a resource from the available transmission resources.
  • the transmission resource is selected from the available transmission resources for each of the other service packets.
  • each service packet is selected from the available sending resources, and may include:
  • the transmission resource is randomly selected from the priority resource subsets, wherein the resource is calculated according to all the transmission times in the subframe where the transmission resource is located, and the available transmission power or the number of transmissions in the same subframe is calculated, and the available transmission power is lower than or Equivalent to the configured reliable transmit power threshold, or the number of transmissions in the same subframe does not exceed the maximum number of transmissions in the same subframe configured;
  • the transmission resource is determined from the retransmission resource, where the available transmit power on the resource is lower than the configured reliable transmit power threshold or the number of transmissions on the resource is greater than the configured maximum number of transmissions.
  • the method when randomly selecting the sending resource from the preferred resource subset, the method further includes:
  • the transmission resources are randomly selected in the available resource subsets other than the preferential resource subset.
  • the method when selecting the retransmitted resource, the method further includes:
  • the retransmission resource is randomly selected in the available resource subset other than the priority resource subset.
  • the single service packet retransmission sending resource is limited to that the initial retransmission is not in the same subframe and the time interval is less than a certain threshold.
  • the order is determined according to the size of the frequency domain resource occupied by the sending service packet and/or the carrier number corresponding to the sending service packet.
  • the first type is to select a transmission resource from each available transmission resource for each service packet.
  • the concentration is less.
  • the transmission resource is selected on the subframe, in this example, it is considered that the resource selected by the UE is another process resource that is already transmitting:
  • the order may be the size of the frequency domain resource occupied by the transmission service packet, the carrier number corresponding to the service packet from low to high, or high to low;
  • the available resources include service packets not related to the current resource selection, and service packets related to the current resource selection and selected resource selection first. In the implementation, it can be recorded as a priority resource subset;
  • step C3 Calculate the available transmission power or the number of transmissions in the same subframe according to all the transmission times in the subframe where the transmission resource is located, if the available transmission power is lower than the (pre)configured reliable transmission power threshold, or the same subframe If the number of times of transmission exceeds the maximum number of transmissions in the (pre)configured same subframe, step C2 is re-executed, otherwise step C4 is performed; if the number of re-executions returned to step C2 reaches the threshold of (pre)configuration, then Peculiarly selecting one of the available resources in the subset of available resources other than the subset of resources, and performing step C4;
  • step C5 calculating available transmit power according to the retransmission resource selected in step C4 and all transmission times on the subframe in which the transmission resource is located;
  • step C5 If the available transmit power is lower than the reliable transmit power threshold, step C5 is re-executed; if the number of executions of step C5 reaches the threshold value of (pre)configuration, then one of the available resource subsets other than the subset of resources is preferentially selected. A retransmission resource that satisfies the restriction of a single service packet retransmission transmission resource. If the number of retransmissions of the (pre)configuration is ⁇ 1, the steps C4 to C6 are repeatedly executed until the transmission resource satisfying the number of retransmissions is selected.
  • the SPS counter is randomly selected, and the SPS counter of all service packets is selected as the current resource.
  • steps C1 to C6 will be described below by way of a flowchart.
  • step C1 is a schematic diagram of a resource allocation implementation process, which is used to describe the process from step C1 to step C6. As shown in the figure, the following process may be included:
  • Step 401 Obtain a set of available resources after the occupied resources are excluded.
  • Step 402 Determine, among other resources that the other UE and the UE are currently transmitting other services, the available resources that overlap in the time domain, and record the priority as the resource subset.
  • Step 403 Randomly select one sending resource from the preferred resource subset.
  • Step 404 Calculate whether the available transmit power is lower than the (pre)configured reliable transmit power threshold, or whether the number of times of transmission in the time domain resource is greater than the (pre)configured maximum number of transmissions. If yes, go to step 407, otherwise go to step 405;
  • Step 405 it is determined whether the threshold is selected, if yes, go to step 406, otherwise go to step 403;
  • Step 406 selecting one sending resource in the available resource subset other than the preferential resource subset, and proceeding to step 407;
  • Step 407 Select a retransmission resource that satisfies the condition in the preferred resource subset.
  • Step 408 Calculate whether the available transmit power is lower than the (pre)configured reliable transmit power threshold, or whether the number of times of transmission in the time domain resource is greater than the (pre)configured maximum number of transmissions. If yes, go to step 411, otherwise go to step 409;
  • Step 409 it is determined whether the threshold of selection times is reached, if yes, go to step 410, otherwise go to step 407;
  • Step 410 selecting a retransmission resource that satisfies the condition in a subset of available resources other than the priority resource subset, and proceeding to step 411;
  • Step 411 the resource selection is completed.
  • the second type is that the first sending service packet selects the sending resource from the available sending resources, and then selects the sending resource from the available sending resources for each of the other service packets.
  • the concentration is less.
  • the transmission resource is selected on the subframe, and in this example, the resource selected by the UE is not considered to be another process resource that is already transmitting:
  • the order may be the size of the frequency domain resource occupied by the transmission service packet, the carrier number corresponding to the service packet from low to high, or high to low;
  • the available resources overlapping with the resources selected by other service packets in the time domain are recorded as the preferred subset of resources;
  • step D3 calculating the available transmit power or the number of transmissions in the same subframe according to all the number of transmissions in the subframe where the transmission resource is located, if the available transmit power is lower than the (pre)configured reliable transmit power threshold, or If the number of transmissions in the same subframe exceeds the maximum number of transmissions in the (pre)configured same subframe, step D2 is performed again; otherwise, step D4 is performed; if the number of re-executions returned to step D2 reaches the threshold of (pre)configuration Value, then randomly select one sending resource in the available resource subsets other than the preferred resource subset, and perform step D4;
  • step D5 calculating available transmit power according to the retransmission resource selected in step D4 and all the transmission times on the subframe where the transmission resource is located;
  • step D5 If the available transmit power is lower than the reliable transmit power threshold, step D5 is re-executed; if the number of executions of step D5 reaches the threshold of (pre)configured, then one of the available resource subsets other than the subset of resources is preferentially selected. A retransmission resource that satisfies the restriction of a single service packet retransmission transmission resource. If the number of retransmissions of (pre)configuration is ⁇ 1, step D4 to step D6 are repeatedly executed until the transmission resource satisfying the number of retransmissions is selected.
  • the SPS counter is randomly selected, and the SPS counter of all service packets is selected as the current resource.
  • the third type is the third type.
  • Selecting a sending resource in the set of available resources includes:
  • the transmission resources are selected from the available transmission resources for each of the other service packets.
  • each of the other service packets selects a sending resource from the available sending resources, including:
  • the service packet Determining the maximum number of transmissions allowed in the same subframe when the transmission power is not lower than the configured reliable transmission power according to the configuration or calculation. If the maximum number of transmission times has been exceeded in the subframe of the currently allocated resource, the current The service packet reselects other available subframes that are not selected for transmission resource allocation.
  • S-RSSI power elimination is performed in the remaining available subframe sets after the exclusion, and in the available sub-frame subsets with lower S-RSSI power, the selection is performed under the condition that the service packet transmission power is not lower than the minimum reliable power. Selecting a transmission resource on fewer subframes;
  • the RSSI power ordering may be The RSSI linear mean of all remaining resources (subchannels) on the subframe;
  • the order may be the size of the frequency domain resource occupied by the transmission service packet, and the carrier number corresponding to the service packet.
  • Low to high or high to low, etc. can be as follows:
  • the SPS counter is randomly selected, and the SPS counter of all service packets is selected as the current resource.
  • the maximum number of transmissions allowed in the same subframe may be determined as follows:
  • N is the maximum number of transmissions allowed in the same subframe when the transmission power is not lower than the (pre)configured reliable transmission power
  • P cMAX (dBm) is the maximum transmission power of the V2X UE
  • PaMIN (dBm) is reliable. Transmit power.
  • the maximum transmission number allowed in the same subframe may be calculated as:
  • the maximum transmit power of the V2X UE is recorded as P cMAX (dBm), and the reliable transmit power of the (pre)configuration is recorded as PaMIN (dBm);
  • the maximum number of transmissions allowed in the same subframe is recorded as N.
  • the transmit power of each service packet may be determined as follows:
  • P cMAX (dBm) is the maximum transmit power of the V2X UE
  • PaMIN (dBm) is the configured reliable transmit power
  • N is the number of transmissions in the same subframe when the transmit power is not lower than the (pre)configured reliable transmit power
  • Pa is the available transmit power for each service packet; Pa satisfies Pa ⁇ PaMIN.
  • the calculation manner and rules of the transmission power of each service packet may be as follows:
  • the maximum transmit power of the V2X UE is recorded as P cMAX (dBm), and the reliable transmit power of the (pre)configuration is recorded as PaMIN (dBm); when the transmit power is not lower than the (pre)configured reliable transmit power, the number of transmissions in the same subframe Recorded as N;
  • Pa should satisfy Pa ⁇ PaMIN.
  • the embodiment of the present application further provides a resource selection device, a computer device, and a storage medium under multi-carrier. Since the principle of solving the problem of these devices is similar to the resource selection method under multi-carrier, the devices are Implementation can refer to the implementation of the method, and the repetition will not be repeated.
  • the computer device provided in the embodiment of the present application includes a memory, a processor, and a computer program stored on the memory and operable on the processor, and the processor executes the computer program to implement resources under multiple carriers according to the following method: select:
  • the available resource collection is obtained according to the sensing result
  • selecting the sending resource in the set of available resources is to sort the S-RSSI, and selecting the sending resource in the set of available resources with a lower S-RSSI.
  • the available resource collection is obtained after the exclusion, including:
  • the ratio of the remaining resources is calculated according to the size of each service packet. If the ratio does not reach or exceed the configured ratio threshold, the receiving power threshold is incremented by a preset value and the exclusion process is re-executed. After the exclusion, the proportion of the remaining resources calculated according to the size of each service packet respectively reaches or exceeds the configured proportional threshold;
  • the available resources when all reach or exceed the configured proportional threshold are taken as the set of available resources.
  • the available resource collection is obtained after the exclusion, including:
  • the number of available subframes is determined. If the number of available subframes or the ratio of available subframes to all candidate resource subframes does not reach or exceed the configured number threshold or the proportional threshold, the power threshold is received each time. After the value is increased by the preset value, the exclusion process is re-executed until after the exclusion, the number of available subframes or the ratio of available subframes to all candidate resource subframes reaches or exceeds the configured number threshold or the proportional threshold.
  • a frame is a subframe that can satisfy all service packets that can be sent simultaneously;
  • the available resources when the configured number threshold or the proportional threshold is reached or exceeded are taken as the set of available resources.
  • selecting a sending resource in the available resource set includes:
  • each service packet is selected from the available sending resources, including:
  • the transmission resource is randomly selected from the priority resource subsets, wherein the resource is calculated according to all the transmission times in the subframe where the transmission resource is located, and the available transmission power or the number of transmissions in the same subframe is calculated, and the available transmission power is lower than or Equivalent to the configured reliable transmit power threshold, or the number of transmissions in the same subframe does not exceed the maximum number of transmissions in the same subframe configured;
  • the transmission resource is determined from the retransmission resource, where the available transmit power on the resource is lower than the configured reliable transmit power threshold or the number of transmissions on the resource is greater than the configured maximum number of transmissions.
  • the method when randomly selecting the sending resource from the preferred resource subset, the method further includes:
  • the transmission resources are randomly selected in the available resource subsets other than the preferential resource subset.
  • the method when selecting to retransmit the resource, the method further includes:
  • the retransmission resource is randomly selected in the available resource subset other than the priority resource subset.
  • the order is determined according to the size of the frequency domain resource occupied by the sending service packet and/or the carrier number corresponding to the sending service packet.
  • selecting a sending resource in the available resource set includes:
  • the transmission resources are selected from the available transmission resources for each of the other service packets.
  • each of the other service packets selects a sending resource from the available sending resources, including:
  • the service packet Determining the maximum number of transmissions allowed in the same subframe when the transmission power is not lower than the configured reliable transmission power according to the configuration or calculation. If the maximum number of transmission times has been exceeded in the subframe of the currently allocated resource, the current The service packet reselects other available subframes that are not selected for transmission resource allocation.
  • the S-RSSI power ordering for ordering is an RSSI linear mean of all remaining resources on the subframe.
  • the SPS counter for performing resource scheduling is set within the configured semi-persistent scheduling SPS counter range, and the SPS counter is randomly selected as the SPS counter of all service packets selected by the current resource.
  • a computer readable storage medium stores a computer program for performing a resource selection method under multiple carriers. Specifically, the method is as follows:
  • the available resource collection is obtained according to the sensing result
  • selecting the sending resource in the set of available resources is to sort the S-RSSI, and selecting the sending resource in the set of available resources with a lower S-RSSI.
  • the available resource collection is obtained after the exclusion, including:
  • the ratio of the remaining resources is calculated according to the size of each service packet. If the ratio does not reach or exceed the configured ratio threshold, the receiving power threshold is incremented by a preset value and the exclusion process is re-executed. After the exclusion, the proportion of the remaining resources calculated according to the size of each service packet respectively reaches or exceeds the configured proportional threshold;
  • the available resources when all reach or exceed the configured proportional threshold are taken as the set of available resources.
  • the available resource collection is obtained after the exclusion, including:
  • the number of available subframes is determined. If the number of available subframes or the ratio of available subframes to all candidate resource subframes does not reach or exceed the configured number threshold or the proportional threshold, the power threshold is received each time. After the value is increased by the preset value, the exclusion process is re-executed until after the exclusion, the number of available subframes or the ratio of available subframes to all candidate resource subframes reaches or exceeds the configured number threshold or the proportional threshold.
  • a frame is a subframe that can satisfy all service packets that can be sent simultaneously;
  • the available resources when the configured number threshold or the proportional threshold is reached or exceeded are taken as the set of available resources.
  • selecting a sending resource in the available resource set includes:
  • each service packet is selected from the available sending resources, including:
  • the transmission resource is randomly selected from the priority resource subsets, wherein the resource is calculated according to all the transmission times in the subframe where the transmission resource is located, and the available transmission power or the number of transmissions in the same subframe is calculated, and the available transmission power is lower than or Equivalent to the configured reliable transmit power threshold, or the number of transmissions in the same subframe does not exceed the maximum number of transmissions in the same subframe configured;
  • the transmission resource is determined from the retransmission resource, where the available transmit power on the resource is lower than the configured reliable transmit power threshold or the number of transmissions on the resource is greater than the configured maximum number of transmissions.
  • the method when randomly selecting the sending resource from the preferred resource subset, the method further includes:
  • the transmission resources are randomly selected in the available resource subsets other than the preferential resource subset.
  • the method when selecting to retransmit the resource, the method further includes:
  • the retransmission resource is randomly selected in the available resource subset other than the priority resource subset.
  • the order is determined according to the size of the frequency domain resource occupied by the sending service packet and/or the carrier number corresponding to the sending service packet.
  • selecting a sending resource in the available resource set includes:
  • the transmission resources are selected from the available transmission resources for each of the other service packets.
  • each of the other service packets selects a sending resource from the available sending resources, including:
  • the service packet Determining the maximum number of transmissions allowed in the same subframe when the transmission power is not lower than the configured reliable transmission power according to the configuration or calculation. If the maximum number of transmission times has been exceeded in the subframe of the currently allocated resource, the current The service packet reselects other available subframes that are not selected for transmission resource allocation.
  • the S-RSSI power ordering for ordering is an RSSI linear mean of all remaining resources on the subframe.
  • the SPS counter for performing resource scheduling is set within the configured semi-persistent scheduling SPS counter range, and the SPS counter is randomly selected as the SPS counter of all service packets selected by the current resource.
  • FIG. 5 is a schematic structural diagram of a resource selection apparatus under multi-carrier, as shown in the figure, which may include:
  • the carrier determining module 501 is configured to determine, according to the resource occupancy exclusion result on each carrier, at least one candidate carrier;
  • the available resource determining module 502 is configured to: after the resources on the candidate carrier are made available, obtain the available resource set according to the sensing result;
  • the sending resource determining module 503 is configured to select a sending resource in the set of available resources, and set an SPS counter for performing resource scheduling.
  • the same SPS counter is set to ensure segmentation for resource selection of multiple segment service packets from the same service packet.
  • the resource re-selection timing of the service packet is consistent, thereby providing a resource selection scheme that minimizes the impact of half-duplex, reduces the impact of loss of the reception opportunity, and the number of skip subframes, and avoids power allocation by simultaneously transmitting multiple service packets. Too serious a problem.
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
  • the application can be in the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本申请公开了一种多载波下的资源选择方法、装置及计算机设备、存储介质,包括:根据各载波上的资源占用排除结果确定至少一个候选载波;将所述候选载波上的资源置为可用后,根据感知结果进行排除后获得可用资源集合;在所述可用资源集合中选择发送资源,并设置进行资源调度的半持续调度计数器。本申请提供了一种尽量减少半双工影响、降低接收机会丢失影响及skip子帧数量的资源选择方案,同时避免了以多个业务包同时发送造成功率分配过于严重的问题。

Description

多载波下的资源选择方法、装置及计算机设备、存储介质
本申请要求在2017年9月18日提交中国专利局、申请号为201710842497.5、申请名称为“多载波下的资源选择方法、装置及计算机设备、存储介质”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线通信技术领域,特别涉及一种多载波下的资源选择方法、装置及计算机设备、存储介质。
背景技术
目前3GPP协议版本中,LTE(Long Term Evolution,长期演进)-V2X(Vehicle to Everything,车到万物)在单载波上进行业务传输,不支持载波聚合,仅在单载波上进行发送资源选择,不支持多载波情况下的载波选择。
图1为资源分配时序示意图,其中,m为业务包达到时刻/资源选择时刻,T1、T2分别为资源选择窗上沿和下沿,d为发送资源所在时刻,P*i为业务周期,如图所示,目前LTE-V2X单载波上发送资源的选择包括以下步骤:
1:将资源选择窗内的所有候选资源标记为可用;
2:进行已占用资源的排除,包括2类:
第一类是sensing(感知)窗口中,UE(User Equipment,用户设备)自身进行发送而无法在发送子帧上监听到其他UE发送的业务包,上述子帧称为skip子帧,需要假定该子帧上其他UE以系统配置的所有周期均预约了下一次资源,且预约的资源与候选子帧交叠,或者与候选子帧之后的1,2,…,10counter(计数器)-1次发送子帧交叠,需要将上述候选子帧排除。
第二类是在sensing窗口中监听到了其他UE发送的SA(Scheduling Assignment,调度控制),根据从SA中获知的周期和资源预约信息,如果预约的资源与候选资源交叠,或者与候选子帧之后的1,2,…,10counter 1次发送资源交叠,且根据SA测量到的PSSCH-RSRP(PSSCH-RSRP:Physical Sidelink Shared Channel Reference Signal Received Power,物理直通链路共享信道参考信号接收功率)高于的门限值,则相应的候选资源需要被排除。
如果在第2步排除后、剩余资源比例低于20%,则将门限值提升3dB,重新执行排除过程,直至剩余资源比例达到或高于20%为止。
3:对候选资源进行S-RSSI(Sidelink-Received Signal Strength Indication,接收的信号强度指示)测量和排序,选择出S-RSSI测量值最低的20%资源,由高层从上述20%候选资源中进行资源选择。
资源选择完成后,设置选择资源调度的SPS counter(SPS计数器;SPS:semi-persistent schedule,半持续调度)。
现有的LTE-V2X的资源选择方法至少存在以下问题之一:
现有资源选择机制仅针对单载波的资源选择,不能避免载波聚合引入造成的多载波上更为严重的半双工影响(因skip子帧个数增加而造成的更多接收机会的丢失);
现有资源选择机制仅针对单载波的资源选择,未考虑如果同一子帧上在多个载波进行发送时会造成每个发送功率降低的影响;
来自同一个业务包的多个分段业务包发送时,独立执行现有机制不能保证一致的资源选择/重选行为。
发明内容
本申请提供了一种多载波下的资源选择方法、装置及计算机设备、存储介质,用以针对引入载波聚合后在多载波上进行业务发送将造成更为显著的半双工影响从而造成接收机会丧失、影响系统性能问题。
本申请实施例中提供了一种多载波下的资源选择方法,包括:
根据各载波上的资源占用排除结果确定至少一个候选载波;
将所述候选载波上的资源置为可用后,根据sensing结果进行排除后获得可用资源集合;
在所述可用资源集合中选择发送资源,并设置进行资源调度的SPS counter。
可选的,在所述可用资源集合中选择发送资源,是对S-RSSI进行排序,在S-RSSI较低的所述可用资源集合中选择发送资源。
可选的,根据sensing结果进行排除后获得可用资源集合,包括:
在所述候选载波上,对skip子帧对应的候选资源进行排除;和/或,在所述候选载波上,分别对已占用资源对应的预约资源进行排除;
在排除后,分别按照各业务包大小计算得出剩余资源比例,若该比例未全部达到或者高于配置的比例阈值,则每次将接收功率门限值增加预设值后重新执行排除过程,直至在排除后,分别按照各业务包大小计算得出的剩余资源比例全部达到或高于配置的比例阈值为止;
将全部达到或高于配置的比例阈值时的可用资源作为所述可用资源集合。
可选的,根据sensing结果进行排除后获得可用资源集合,包括:
在所述候选载波上,对skip子帧对应的候选资源进行排除;和/或,在所述候选载波上,分别对已占用资源对应的预约资源进行排除;
在排除后,确定可用子帧个数,若可用子帧的数量或者可用子帧占所有候选资源子帧的比例未达到或者高于配置的数量阈值或者比例阈值,则每次将接收功率门限值增加预设值后重新执行排除过程,直至在排除后,可用子帧的数量或者可用子帧占所有候选资源子帧的比例达到或者高于配置的数量阈值或者比例阈值为止,所述可用子帧是指能够满足可同时发送所有业务包的子帧;
将达到或高于配置的数量阈值或者比例阈值时的可用资源作为所述可用资源集合。
可选的,在所述可用资源集合中选择发送资源,包括:
在每个候选载波上,在所述可用资源集合中进行S-RSSI功率排序,选择出功率最低的达到配置比例的可用资源作为可用资源子集;
按照次序依次为各个发送业务包选择可用的发送资源;
分别为每个业务包从可用的发送资源中选择发送资源,或者,为第一个发送业务包从可用的发送资源中选择发送资源后分别为其它每个业务包从可用的发送资源中选择发送资源。
可选的,分别为每个业务包从可用的发送资源中选择发送资源,包括:
在所述可用资源子集中,根据配置的最大发送次数,或者根据计算确定满足发送功率不低于配置的可靠发送功率时、同一子帧上允许的最大发送次数;
确定与同一UE发送其他业务包在时域上交叠的可用资源,记为优先选择资源子集;
从优先选择资源子集中随机选择出发送资源,其中,该资源是根据该发送资源所在子帧上的所有发送次数,计算可用发送功率或者同一子帧内的发送次数后,可用发送功率低于或等于配置的可靠发送功率门限值,或者同一子帧内的发送次数未超出配置的同一子帧内的最大发送次数;
在已选择的发送资源中,在满足单业务包重传发送资源限制的条件下,在优先选择资源子集中选择重传资源;
从所述重传资源中确定出发送资源,其中,该资源上的可用发送功率低于配置的可靠发送功率门限/或者该资源上的发送次数大于配置的最大发送次数。
可选的,在从优先选择资源子集中随机选择出发送资源时,进一步包括:
若选择次数达到配置的次数门限值,在优先选择资源子集以外的可用资源子集中随机 选择出发送资源。
可选的,在选择重传资源时,进一步包括:
若从所述重传资源中确定出发送资源的过程中,选择次数达到配置的次数门限值,在优先选择资源子集以外的可用资源子集中随机选择出重传资源。
可选的,在按照次序依次为各个发送业务包选择发送资源时,所述次序是根据发送业务包占用频域资源的大小和/或发送业务包对应的载波编号确定的。
可选的,在所述可用资源集合中选择发送资源,包括:
在每个候选载波上,在所述可用资源集合中进行S-RSSI功率排序,选择出功率最低的达到配置比例的可用资源作为可用资源子集;
按照次序依次为各个发送业务包选择可用的发送资源;
为第一个发送业务包从可用的发送资源中选择满足重传次数和初重传发送资源限制的子帧,并在选择的子帧上为第一个发送业务包选择发送资源;
分别为其它每个业务包从可用的发送资源中选择发送资源。
可选的,分别为其它每个业务包从可用的发送资源中选择发送资源,包括:
在上一个业务包已选择了资源的可用子帧上,为当前业务包分配发送资源;
在根据配置或者计算得出的满足发送功率不低于配置的可靠发送功率时,确定同一子帧上允许的最大发送次数,如果当前分配资源的子帧上已超出最大发送次数限制,则为当前业务包重新选择其他未被选择的可用子帧进行发送资源分配。
可选的,用于排序的所述S-RSSI功率排序是子帧上所有剩余资源的RSSI线性均值。
可选的,设置进行资源调度的SPS counter,是在配置的半持续调度SPS counter范围内,随机选择SPS counter,作为本次资源选择的所有业务包的SPS counter。
本申请实施例中提供了一种计算机设备,包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序,所述处理器执行所述计算机程序时按以下方法实现多载波下的资源选择:
根据各载波上的资源占用排除结果确定至少一个候选载波;
将所述候选载波上的资源置为可用后,根据sensing结果进行排除后获得可用资源集合;
在所述可用资源集合中选择发送资源,并设置进行资源调度的SPS counter。
可选的,在所述可用资源集合中选择发送资源,是对S-RSSI进行排序,在S-RSSI较低的所述可用资源集合中选择发送资源。
可选的,根据sensing结果进行排除后获得可用资源集合,包括:
在所述候选载波上,对skip子帧对应的候选资源进行排除;和/或,在所述候选载波上,分别对已占用资源对应的预约资源进行排除;
在排除后,分别按照各业务包大小计算得出剩余资源比例,若该比例未全部达到或者高于配置的比例阈值,则每次将接收功率门限值增加预设值后重新执行排除过程,直至在排除后,分别按照各业务包大小计算得出的剩余资源比例全部达到或高于配置的比例阈值为止;
将全部达到或高于配置的比例阈值时的可用资源作为所述可用资源集合。
可选的,根据sensing结果进行排除后获得可用资源集合,包括:
在所述候选载波上,对skip子帧对应的候选资源进行排除;和/或,在所述候选载波上,分别对已占用资源对应的预约资源进行排除;
在排除后,确定可用子帧个数,若可用子帧的数量或者可用子帧占所有候选资源子帧的比例未达到或者高于配置的数量阈值或者比例阈值,则每次将接收功率门限值增加预设值后重新执行排除过程,直至在排除后,可用子帧的数量或者可用子帧占所有候选资源子帧的比例达到或者高于配置的数量阈值或者比例阈值为止,所述可用子帧是指能够满足可同时发送所有业务包的子帧;
将达到或高于配置的数量阈值或者比例阈值时的可用资源作为所述可用资源集合。
可选的,在所述可用资源集合中选择发送资源,包括:
在每个候选载波上,在所述可用资源集合中进行S-RSSI功率排序,选择出功率最低的达到配置比例的可用资源作为可用资源子集;
按照次序依次为各个发送业务包选择可用的发送资源;
分别为每个业务包从可用的发送资源中选择发送资源,或者,为第一个发送业务包从可用的发送资源中选择发送资源后分别为其它每个业务包从可用的发送资源中选择发送资源。
可选的,分别为每个业务包从可用的发送资源中选择发送资源,包括:
在所述可用资源子集中,根据配置的最大发送次数,或者根据计算确定满足发送功率不低于配置的可靠发送功率时、同一子帧上允许的最大发送次数;
确定与同一UE发送其他业务包在时域上交叠的可用资源,记为优先选择资源子集;
从优先选择资源子集中随机选择出发送资源,其中,该资源是根据该发送资源所在子帧上的所有发送次数,计算可用发送功率或者同一子帧内的发送次数后,可用发送功率低于或等于配置的可靠发送功率门限值,或者同一子帧内的发送次数未超出配置的同一子帧内的最大发送次数;
在已选择的发送资源中,在满足单业务包重传发送资源限制的条件下,在优先选择资源子集中选择重传资源;
从所述重传资源中确定出发送资源,其中,该资源上的可用发送功率低于配置的可靠发送功率门限/或者该资源上的发送次数大于配置的最大发送次数。
可选的,在从优先选择资源子集中随机选择出发送资源时,进一步包括:
若选择次数达到配置的次数门限值,在优先选择资源子集以外的可用资源子集中随机选择出发送资源。
可选的,在选择重传资源时,进一步包括:
若从所述重传资源中确定出发送资源的过程中,选择次数达到配置的次数门限值,在优先选择资源子集以外的可用资源子集中随机选择出重传资源。
可选的,在按照次序依次为各个发送业务包选择发送资源时,所述次序是根据发送业务包占用频域资源的大小和/或发送业务包对应的载波编号确定的。
可选的,在所述可用资源集合中选择发送资源,包括:
在每个候选载波上,在所述可用资源集合中进行S-RSSI功率排序,选择出功率最低的达到配置比例的可用资源作为可用资源子集;
按照次序依次为各个发送业务包选择可用的发送资源;
为第一个发送业务包从可用的发送资源中选择满足重传次数和初重传发送资源限制的子帧,并在选择的子帧上为第一个发送业务包选择发送资源;
分别为其它每个业务包从可用的发送资源中选择发送资源。
可选的,分别为其它每个业务包从可用的发送资源中选择发送资源,包括:
在上一个业务包已选择了资源的可用子帧上,为当前业务包分配发送资源;
在根据配置或者计算得出的满足发送功率不低于配置的可靠发送功率时,确定同一子帧上允许的最大发送次数,如果当前分配资源的子帧上已超出最大发送次数限制,则为当前业务包重新选择其他未被选择的可用子帧进行发送资源分配。
可选的,用于排序的所述S-RSSI功率排序是子帧上所有剩余资源的RSSI线性均值。
可选的,设置进行资源调度的SPS counter,是在配置的半持续调度SPS counter范围内,随机选择SPS counter,作为本次资源选择的所有业务包的SPS counter。
本申请实施例中提供了一种计算机可读存储介质,所述计算机可读存储介质存储有执行多载波下的资源选择方法的计算机程序。
本申请实施例中提供了一种多载波下的资源选择装置,包括:
载波确定模块,用于根据各载波上的资源占用排除结果确定至少一个候选载波;
可用资源确定模块,用于将所述候选载波上的资源置为可用后,根据sensing结果进行排除后获得可用资源集合;
发送资源确定模块,用于在所述可用资源集合中选择发送资源,并设置进行资源调度的SPS counter。
本申请有益效果如下:
相对于现有的单载波资源选择机制,针对引入载波聚合后在多载波上进行业务发送将造成更为显著的半双工影响从而造成接收机会丧失、影响系统性能问题,在本申请实施例提供的技术方案中,在考虑多载波同时进行业务发送时功率分配的情况时,由于针对来自同一业务包的多个分段业务包的资源选择,设置相同的SPS counter以保证分段业务包的资源重选时机保持一致,从而提供了一种尽量减少半双工影响、降低接收机会丢失影响及skip子帧数量的资源选择方案,同时避免了以多个业务包同时发送造成功率分配过于严重的问题。
附图说明
此处所说明的附图用来提供对本申请的进一步理解,构成本申请的一部分,本申请的示意性实施例及其说明用于解释本申请,并不构成对本申请的不当限定。在附图中:
图1为背景技术中资源分配时序示意图;
图2为本申请实施例中skip子帧分布示意图;
图3为本申请实施例中多载波下的资源选择方法实施流程示意图;
图4为本申请实施例中资源分配实施流程示意图;
图5为本申请实施例中多载波下的资源选择装置结构示意图。
具体实施方式
发明人在发明过程中注意到:
3GPP RAN#74会议上,确定在V2X中引入载波聚合。
V2X载波聚合支持2种多载波发送业务包的场景:
场景1、相互独立的业务包分别在不同的载波上进行发送;
场景2、来自同一个业务包的分段业务包分别在不同的载波上进行发送。
图2为skip子帧分布示意图,如图2所示,针对以上的2种场景,如果在相邻频带的PC5载波上进行载波聚合,由于半双工的原因会对系统可靠性造成影响,即UE在相邻频段的某一个载波上执行发送,在其他载波上无法进行业务包的接收,在资源选择过程中, sensing窗口内此类子帧被称为skip子帧,对应到资源选择窗内相应子帧的所有资源均不能作为候选资源使用。
因此,在多载波的情况下,由于会在多个载波上进行业务发送,半双工造成skip子帧上所有接收机会被放弃,会对系统性能造成影响,此类影响将显著高于单载波的情况。
另一方面,如果在UE在其中一个载波上进行业务发送,可以使用允许的最大发送功率,但如果在同一子帧上,UE在不同载波上发送多个业务,例如:MAC PDU(MAC:Medium Access Control,媒体接入控制;PDU:Protocol Data Unit,协议数据单元),则要分享最大发送功率,从而对于每一次发送而言,发送功率会造成一定程度降低,因此,如果合理的选择多载波上的发送资源,实现对降低半双工影响和避免发送功率显著降低而影响可靠性的联合考虑,是需要解决的技术问题。基于此,发明实施例中提供了多载波下的资源选择方案,下面结合附图对本申请的具体实施方式进行说明。
图3为多载波下的资源选择方法实施流程示意图,如图所示,可以包括:
步骤301、根据各载波上的资源占用排除结果确定至少一个候选载波;
具体的,可以根据业务属性、业务优先级、载波负载、可用载波集合中各载波上的资源占用排除结果中的至少一个因素来选择确定候选载波(集合)。
步骤302、将所述候选载波上的资源置为可用后,根据sensing结果进行排除后获得可用资源集合;
具体的,在将所有候选载波(集合)上的候选资源置为可用后,根据sensing结果,进行如下操作:
确定skip子帧对应的候选资源;和/或,排除已占用资源对应的预约资源;
然后确定满足比例要求的可用资源集合或可用子帧集合。
其中,所述资源的排除可在某一单载波上独立执行或者在多个载波上联合执行。
步骤303、在所述可用资源集合中选择发送资源,并设置进行资源调度的SPS counter。
可选的,在所述可用资源集合中选择发送资源,是对S-RSSI进行排序,在S-RSSI较低的所述可用资源集合中选择发送资源。
具体的,在排除后的剩余可用资源集合中,进行S-RSSI功率排序,在S-RSSI功率较低的可用资源子集中,在满足业务包发送功率不低于最小可靠功率的条件下、集中在较少的子帧上选择发送资源;或者,
在排除后的剩余可用子帧集合中,进行S-RSSI功率排除,在S-RSSI功率较低的可用子帧子集中,选择满足业务包发送功率不低于最小可靠功率的条件下、集中在较少的子帧上选择发送资源。
然后资源选择完成后,进行资源调度的SPS counter的设置。
可选的,所述资源是以子帧或短子帧为时域资源单位进行的。
也即,在具体实施例中用以举例示意所提及的子帧,也可以替换为短子帧等其他时域资源单位。
下面对各步骤的具体实施进行说明。
在步骤302根据sensing结果进行排除后获得可用资源集合的可选的,可以包括如下两种方式:
第一种为:
在所述候选载波上,对skip子帧对应的候选资源进行排除;和/或,在所述候选载波上,分别对已占用资源对应的预约资源进行排除;
在排除后,分别按照各业务包大小计算得出剩余资源比例,若该比例未全部达到或者高于配置的比例阈值,则每次将接收功率门限值增加预设值后重新执行排除过程,直至在排除后,分别按照各业务包大小计算得出的剩余资源比例全部达到或高于配置的比例阈值为止;
将全部达到或高于配置的比例阈值时的可用资源作为所述可用资源集合。
具体的,在多个载波联合执行资源排除后,可以按如下方式确定满足比例要求的可用资源集合:
1)在所有候选载波上,进行skip子帧对应的候选资源排除;和/或,2)在所有候选载波上,分别进行已占用资源对应的预约资源排除;其中,具体实施时,在按对skip子帧对应的候选资源进行排除时,可以采用现有机制按对skip子帧对应的候选资源进行排除。
在1)与2)实施的排除后,分别按照各业务包大小计算得出的剩余资源比例,若未全部达到或者高于(预)配置的比例阈值,则将PSSCH-RSRP门限值提升3dB(此处按现有的惯常实施方式将接收功率定为PSSCH-RSRP门限值,增加的预设值设为3dB),重新执行排除过程,直至分别按照各业务包大小计算得出的剩余资源比例达到或高于(预)配置的比例阈值为止。
第二种为:
在所述候选载波上,对skip子帧对应的候选资源进行排除;和/或,在所述候选载波上,分别对已占用资源对应的预约资源进行排除;
在排除后,确定可用子帧个数,若可用子帧的数量或者可用子帧占所有候选资源子帧的比例未达到或者高于配置的数量阈值或者比例阈值,则每次将接收功率门限值增加预设值后重新执行排除过程,直至在排除后,可用子帧的数量或者可用子帧占所有候选资源子 帧的比例达到或者高于配置的数量阈值或者比例阈值为止,所述可用子帧是指能够满足可同时发送所有业务包的子帧;
将达到或高于配置的数量阈值或者比例阈值时的可用资源作为所述可用资源集合。
具体的,在多个载波联合执行资源排除后,可以按如下方式确定满足比例要求的可用子帧集合:
1)在所有候选载波上,进行skip子帧对应的候选资源排除;和/或,2)在所有候选载波上,分别进行已占用资源对应的预约资源排除;其中,具体实施时,在按对skip子帧对应的候选资源进行排除时,可以采用现有机制按对skip子帧对应的候选资源进行排除。
计算在1)与2)实施后的排除后,确定能够满足可同时发送所有业务包的子帧个数,该子帧定义为可用子帧;若可用子帧的数量或者可用子帧占所有候选资源子帧的比例未达到或者高于(预)配置的数量阈值或者比例阈值,则将PSSCH-RSRP门限值提升3dB(此处按现有的惯常实施方式将接收功率定为PSSCH-RSRP门限值,增加的预设值设为3dB),重新执行排除过程,直至可用子帧的数量或者可用子帧占所有候选资源子帧的比例达到或者高于(预)配置的数量阈值或者比例阈值为止。
在步骤303在所述可用资源集合中选择发送资源的可选的,本申请实施例中提供了三种方式,下面分别进行说明。
可选的,会涉及各种配置,例如功率最低的达到配置比例的可用资源、配置的可靠发送功率、配置的可靠发送功率门限、配置的最大发送次数等,容易理解,配置可以来自预配置和/或高层指令配置等方式,本申请实施例中因为仅涉及配置本身,不需关注配置方式,因此将主要以预配置的方式来进行说明,为了表达不限于预配置一种方式,将采用(预)配置的表达方式。
第一种:
在每个候选载波上,在所述可用资源集合中进行S-RSSI功率排序,选择出功率最低的达到配置比例的可用资源作为可用资源子集;
按照次序依次为各个发送业务包选择可用的发送资源;
分别为每个业务包从可用的发送资源中选择发送资源。
第二种:
在每个候选载波上,在所述可用资源集合中进行S-RSSI功率排序,选择出功率最低的达到配置比例的可用资源作为可用资源子集;
按照次序依次为各个发送业务包选择可用的发送资源;
为第一个发送业务包从可用的发送资源中选择发送资源后分别为其它每个业务包从 可用的发送资源中选择发送资源。
在第一种及第二种实施方式中,可以如下:
可选的,分别为每个业务包从可用的发送资源中选择发送资源,可以包括:
在所述可用资源子集中,根据配置的最大发送次数,或者根据计算确定满足发送功率不低于配置的可靠发送功率时、同一子帧上允许的最大发送次数;
确定与同一UE发送其他业务包在时域上交叠的可用资源,记为优先选择资源子集;
从优先选择资源子集中随机选择出发送资源,其中,该资源是根据该发送资源所在子帧上的所有发送次数,计算可用发送功率或者同一子帧内的发送次数后,可用发送功率低于或等于配置的可靠发送功率门限值,或者同一子帧内的发送次数未超出配置的同一子帧内的最大发送次数;
在已选择的发送资源中,在满足单业务包重传发送资源限制的条件下,在优先选择资源子集中选择重传资源;
从所述重传资源中确定出发送资源,其中,该资源上的可用发送功率低于配置的可靠发送功率门限/或者该资源上的发送次数大于配置的最大发送次数。
可选的,在从优先选择资源子集中随机选择出发送资源时,还可以进一步包括:
若选择次数达到配置的次数门限值,在优先选择资源子集以外的可用资源子集中随机选择出发送资源。
可选的,在选择重传资源时,还可以进一步包括:
若从所述重传资源中确定出发送资源的过程中,选择次数达到配置的次数门限值,在优先选择资源子集以外的可用资源子集中随机选择出重传资源。
可选的,所述单业务包重传发送资源限制为初重传不在同一子帧且时间间隔小于一定阈值。
可选的,在按照次序依次为各个发送业务包选择发送资源时,所述次序是根据发送业务包占用频域资源的大小和/或发送业务包对应的载波编号确定的。
上述实施方式还将通过对下述第一种方式、第二种方式的具体实例来进行说明。
下面对以实例分别对第一种的“分别为每个业务包从可用的发送资源中选择发送资源”,以及,第二种的“为第一个发送业务包从可用的发送资源中选择发送资源后分别为其它每个业务包从可用的发送资源中选择发送资源”两种方式进行说明。
第一种、分别为每个业务包从可用的发送资源中选择发送资源。
在排除后的剩余可用资源集合中,进行S-RSSI功率排序,在S-RSSI功率较低的可用资源子集中,在满足业务包发送功率不低于最小可靠功率的条件下、集中在较少的子帧上 选择发送资源,本例中是考虑到了UE选择的资源是已在进行发送的其他进程资源:
1)在每个候选载波上,在排除后得到的剩余可用资源集合中进行S-RSSI功率排序,选择出功率最低的、预设的一定比例的可用资源子集;
2)从功率最低的可用资源子集中,依次选择出进行业务发送的资源,具体可以按如下方式:
A)根据(预)配置或者计算出满足发送功率不低于(预)配置的可靠发送功率时,确定出同一子帧上允许的最大发送次数;
B)按照一定的次序依次为各个发送业务包选择发送资源,所述次序可以是发送业务包占用频域资源的大小、业务包对应的载波编号自低至高或者自高至低等;
C)分别为每个业务包选择资源,分别执行以下过程:
C1)确定与同一UE发送其他业务包在时域上交叠的可用资源,该可用资源包括与本次资源选择无关的业务包以及与本次资源选择相关、已先选定资源选择的业务包,实施中可将其记为优先选择资源子集;
C2)随机选择1个发送资源;
C3)根据该发送资源所在子帧上的所有发送次数,计算可用发送功率或者同一子帧内的发送次数,若可用发送功率低于(预)配置的可靠发送功率门限值,或者同一子帧内的发送次数超出(预)配置的同一子帧内的最大发送次数,重新执行步骤C2,否则执行步骤C4;若返回步骤C2重新执行的次数达到(预)配置的次数门限值,则在优先选择资源子集以外可用资源子集中随机选择1个发送资源,执行步骤C4;
C4)根据已选择的发送资源,在满足单业务包重传发送资源限制的条件下,在优先选择资源子集中选择重传资源;其中,所述单业务包重传发送资源限制可以是初重传不在同一子帧且时间间隔小于一定阈值;
C5)根据步骤C4选择的重传资源以及该发送资源所在子帧上的所有发送次数,计算可用发送功率;
C6)若可用发送功率低于可靠发送功率门限值,重新执行步骤C5;若步骤C5执行次数达到(预)配置的次数门限值,则优先选择资源子集以外可用资源子集中选择1个满足单业务包重传发送资源限制的重传资源。若(预)配置的重传次数≥1次,则重复执行步骤C4至步骤C6,直至选择出满足重传次数的发送资源为止。
D)在(预)配置的半持续调度SPS counter范围内,随机选择SPS counter,作为本次资源选择所有业务包的SPS counter。
下面再对步骤C1至步骤C6的实施以流程图来进行说明。
图4为资源分配实施流程示意图,用以说明步骤C1至步骤C6的流程,如图所示,可以包括如下流程:
步骤401、获得占用资源排除后的可用资源集合;
步骤402、确定其它UE与本UE在当前发送其他业务的资源中,在时域上交叠的可用资源,记为优先选择资源子集;
步骤403、从优先选择资源子集中随机选择1个发送资源;
步骤404、计算可用发送功率是否低于(预)配置的可靠发送功率门限/或者该时域资源内发送次数是否大于(预)配置的最大发送次数,是则转入步骤407,否则转入步骤405;
步骤405、判断是否达到选择次数门限,是则转入步骤406,否则转入步骤403;
步骤406、在优先选择资源子集以外的可用资源子集中选择1个发送资源,转入步骤407;
步骤407、在优先选择资源子集中选择满足条件的重传资源;
步骤408、计算可用发送功率是否低于(预)配置的可靠发送功率门限/或者该时域资源内发送次数是否大于(预)配置的最大发送次数,是则转入步骤411,否则转入步骤409;
步骤409、判断是否达到选择次数门限,是则转入步骤410,否则转入步骤407;
步骤410、在优先选择资源子集以外的可用资源子集中选择满足条件的重传资源,转入步骤411;
步骤411、资源选择完成。
第二种、为第一个发送业务包从可用的发送资源中选择发送资源后分别为其它每个业务包从可用的发送资源中选择发送资源。
在排除后的剩余可用资源集合中,进行S-RSSI功率排序,在S-RSSI功率较低的可用资源子集中,在满足业务包发送功率不低于最小可靠功率的条件下、集中在较少的子帧上选择发送资源,本例中不考虑UE选择的资源是已在进行发送的其他进程资源:
1)在每个候选载波上,在排除后得到的剩余可用资源集合中进行S-RSSI功率排序,选择出功率最低的、预设的一定比例的可用资源子集;
2)从功率最低的可用资源子集中,依次选择出进行业务发送的资源,具体可以按如下方式:
A)根据(预)配置或者计算出满足发送功率不低于(预)配置的可靠发送功率时,确定出同一子帧上允许的最大发送次数;
B)按照一定的次序依次为各个发送业务包选择发送资源,所述次序可以是发送业务包占用频域资源的大小、业务包对应的载波编号自低至高或者自高至低等;
C)首先为第1个发送业务包选择资源,在可用资源子集中选择出满足传输次数及初重传限制的发送资源即可;首先为第1个发送业务包选择资源这是因为为第1个进行选择时,不考虑其他已在发送的业务占用的资源,而在第一种方式中则需要考虑其他已在发送的资源。
D)分别为其他的每个业务包选择资源,分别执行以下过程:
D1)将UE本次资源选择过程中,与其他业务包已选择的资源在时域上交叠的可用资源,记为优先选择资源子集;
D2)随机选择1个发送资源;
D3)根据在该发送资源所在子帧上的所有发送次数,计算出可用发送功率或者在同一子帧内的发送次数,若可用发送功率低于(预)配置的可靠发送功率门限值,或者在同一子帧内的发送次数超出(预)配置的同一子帧内的最大发送次数,重新执行步骤D2,否则执行步骤D4;若返回步骤D2重新执行的次数达到(预)配置的次数门限值,则在优先选择资源子集以外可用资源子集中随机选择1个发送资源,执行步骤D4;
D4)根据已选择的发送资源,在满足单业务包重传发送资源限制的条件下,在优先选择资源子集中选择重传资源;其中,所述单业务包重传发送资源限制可以是初重传不在同一子帧且时间间隔小于一定阈值;
D5)根据步骤D4选择的重传资源以及在该发送资源的所在子帧上的所有发送次数,计算可用发送功率;
D6)若可用发送功率低于可靠发送功率门限值,重新执行步骤D5;若步骤D5执行次数达到(预)配置的次数门限值,则优先选择资源子集以外可用资源子集中选择1个满足单业务包重传发送资源限制的重传资源。若(预)配置的重传次数≥1次,则重复执行步骤D4至步骤D6,直至选择出满足重传次数的发送资源为止。
E)在(预)配置的半持续调度SPS counter范围内,随机选择SPS counter,作为本次资源选择所有业务包的SPS counter。
第三种:
在所述可用资源集合中选择发送资源,包括:
在每个候选载波上,在所述可用资源集合中进行S-RSSI功率排序,选择出功率最低的达到配置比例的可用资源作为可用资源子集;
按照次序依次为各个发送业务包选择可用的发送资源;
为第一个发送业务包从可用的发送资源中选择满足重传次数和初重传发送资源限制的子帧,并在选择的子帧上为第一个发送业务包选择发送资源;
分别为其它每个业务包从可用的发送资源中选择发送资源。
可选的,分别为其它每个业务包从可用的发送资源中选择发送资源,包括:
在上一个业务包已选择了资源的可用子帧上,为当前业务包分配发送资源;
在根据配置或者计算得出的满足发送功率不低于配置的可靠发送功率时,确定同一子帧上允许的最大发送次数,如果当前分配资源的子帧上已超出最大发送次数限制,则为当前业务包重新选择其他未被选择的可用子帧进行发送资源分配。
下面以实例进行说明。
在排除后的剩余可用子帧集合中,进行S-RSSI功率排除,在S-RSSI功率较低的可用子帧子集中,选择满足业务包发送功率不低于最小可靠功率的条件下、集中在较少的子帧上选择发送资源;
1)在每个候选载波上,在排除后得到的剩余可用子帧集合中进行S-RSSI功率排序,选择出功率最低的、预设的一定比例的可用子帧子集;RSSI功率排序可以为子帧上所有剩余资源(子信道)的RSSI线性均值;
2)在功率最低的一定比例的可用子帧子集中,按照一定的次序依次为各业务包分配发送资源,所述次序可以是发送业务包占用频域资源的大小、业务包对应的载波编号自低至高或者自高至低等,具体可以如下:
A)为第一个业务包随机选择满足重传次数和初重传发送资源限制的子帧,并在选择的子帧上为第一个业务包选择发送资源;
B)为其他业务包选择发送资源则可以按照以下方式处理:
B1)在上一个业务包已选择了资源的可用子帧上,为当前业务包分配发送资源;
B2)在根据(预)配置或者计算得出的满足发送功率不低于(预)配置的可靠发送功率时,确定在同一子帧上允许的最大发送次数,如果在当前分配资源的子帧上已超出最大发送次数限制,则为当前业务包重新选择其他未被选择的可用子帧进行发送资源分配。
C)在(预)配置的半持续调度SPS counter范围内,随机选择SPS counter,作为本次资源选择所有业务包的SPS counter。
可选的,满足发送功率不低于(预)配置的可靠发送功率时,可以按如下方式确定同一子帧上允许的最大发送次数:
Figure PCTCN2018092245-appb-000001
其中,N为发送功率不低于(预)配置的可靠发送功率时,同一 子帧上允许的最大发送次数记,P cMAX(dBm)为V2X UE最大发送功率,PaMIN(dBm)为配置的可靠发送功率。
具体实施中,例如在上述三种方式中,当满足发送功率不低于(预)配置的可靠发送功率时,同一子帧上允许的最大发送次数的计算方式可以是:
V2X UE最大发送功率记为P cMAX(dBm),(预)配置的可靠发送功率记为PaMIN(dBm);
发送功率不低于(预)配置的可靠发送功率时,同一子帧上允许的最大发送次数记为N,则
Figure PCTCN2018092245-appb-000002
可选的,在同一子帧内有多个业务包进行发送时,可以按如下方式确定每个业务包的发送功率:
Figure PCTCN2018092245-appb-000003
其中,P cMAX(dBm)为V2X UE最大发送功率,PaMIN(dBm)为配置的可靠发送功率;N为发送功率不低于(预)配置的可靠发送功率时,同一子帧上的发送次数;Pa为每个业务包的可用发送功率;Pa满足Pa≥PaMIN。
具体实施中,例如在上述三种方式中,当同一子帧内有多个业务包进行发送时,每个业务包发送功率的计算方式及规则可以如下:
V2X UE最大发送功率记为P cMAX(dBm),(预)配置的可靠发送功率记为PaMIN(dBm);发送功率不低于(预)配置的可靠发送功率时,同一子帧上的发送次数记为N;
每个业务包的可用发送功率记为Pa,则
Figure PCTCN2018092245-appb-000004
Pa应满足Pa≥PaMIN。
基于同一发明构思,本申请实施例中还提供了一种多载波下的资源选择装置及计算机设备、存储介质,由于这些设备解决问题的原理与多载波下的资源选择方法相似,因此这些设备的实施可以参见方法的实施,重复之处不再赘述。
本申请实施例中提供的计算机设备,包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序,所述处理器执行所述计算机程序时按以下方法实现多载波下的资源选择:
根据各载波上的资源占用排除结果确定至少一个候选载波;
将所述候选载波上的资源置为可用后,根据sensing结果进行排除后获得可用资源集合;
在所述可用资源集合中选择发送资源,并设置进行资源调度的SPS counter。
可选的,在所述可用资源集合中选择发送资源,是对S-RSSI进行排序,在S-RSSI较低的所述可用资源集合中选择发送资源。
可选的,根据sensing结果进行排除后获得可用资源集合,包括:
在所述候选载波上,对skip子帧对应的候选资源进行排除;和/或,在所述候选载波上,分别对已占用资源对应的预约资源进行排除;
在排除后,分别按照各业务包大小计算得出剩余资源比例,若该比例未全部达到或者高于配置的比例阈值,则每次将接收功率门限值增加预设值后重新执行排除过程,直至在排除后,分别按照各业务包大小计算得出的剩余资源比例全部达到或高于配置的比例阈值为止;
将全部达到或高于配置的比例阈值时的可用资源作为所述可用资源集合。
可选的,根据sensing结果进行排除后获得可用资源集合,包括:
在所述候选载波上,对skip子帧对应的候选资源进行排除;和/或,在所述候选载波上,分别对已占用资源对应的预约资源进行排除;
在排除后,确定可用子帧个数,若可用子帧的数量或者可用子帧占所有候选资源子帧的比例未达到或者高于配置的数量阈值或者比例阈值,则每次将接收功率门限值增加预设值后重新执行排除过程,直至在排除后,可用子帧的数量或者可用子帧占所有候选资源子帧的比例达到或者高于配置的数量阈值或者比例阈值为止,所述可用子帧是指能够满足可同时发送所有业务包的子帧;
将达到或高于配置的数量阈值或者比例阈值时的可用资源作为所述可用资源集合。
可选的,在所述可用资源集合中选择发送资源,包括:
在每个候选载波上,在所述可用资源集合中进行S-RSSI功率排序,选择出功率最低的达到配置比例的可用资源作为可用资源子集;
按照次序依次为各个发送业务包选择可用的发送资源;
分别为每个业务包从可用的发送资源中选择发送资源,或者,为第一个发送业务包从 可用的发送资源中选择发送资源后分别为其它每个业务包从可用的发送资源中选择发送资源。
可选的,分别为每个业务包从可用的发送资源中选择发送资源,包括:
在所述可用资源子集中,根据配置的最大发送次数,或者根据计算确定满足发送功率不低于配置的可靠发送功率时、同一子帧上允许的最大发送次数;
确定与同一UE发送其他业务包在时域上交叠的可用资源,记为优先选择资源子集;
从优先选择资源子集中随机选择出发送资源,其中,该资源是根据该发送资源所在子帧上的所有发送次数,计算可用发送功率或者同一子帧内的发送次数后,可用发送功率低于或等于配置的可靠发送功率门限值,或者同一子帧内的发送次数未超出配置的同一子帧内的最大发送次数;
在已选择的发送资源中,在满足单业务包重传发送资源限制的条件下,在优先选择资源子集中选择重传资源;
从所述重传资源中确定出发送资源,其中,该资源上的可用发送功率低于配置的可靠发送功率门限/或者该资源上的发送次数大于配置的最大发送次数。
可选的,在从优先选择资源子集中随机选择出发送资源时,进一步包括:
若选择次数达到配置的次数门限值,在优先选择资源子集以外的可用资源子集中随机选择出发送资源。
可选的,在选择重传资源时,进一步包括:
若从所述重传资源中确定出发送资源的过程中,选择次数达到配置的次数门限值,在优先选择资源子集以外的可用资源子集中随机选择出重传资源。
可选的,在按照次序依次为各个发送业务包选择发送资源时,所述次序是根据发送业务包占用频域资源的大小和/或发送业务包对应的载波编号确定的。
可选的,在所述可用资源集合中选择发送资源,包括:
在每个候选载波上,在所述可用资源集合中进行S-RSSI功率排序,选择出功率最低的达到配置比例的可用资源作为可用资源子集;
按照次序依次为各个发送业务包选择可用的发送资源;
为第一个发送业务包从可用的发送资源中选择满足重传次数和初重传发送资源限制的子帧,并在选择的子帧上为第一个发送业务包选择发送资源;
分别为其它每个业务包从可用的发送资源中选择发送资源。
可选的,分别为其它每个业务包从可用的发送资源中选择发送资源,包括:
在上一个业务包已选择了资源的可用子帧上,为当前业务包分配发送资源;
在根据配置或者计算得出的满足发送功率不低于配置的可靠发送功率时,确定同一子帧上允许的最大发送次数,如果当前分配资源的子帧上已超出最大发送次数限制,则为当前业务包重新选择其他未被选择的可用子帧进行发送资源分配。
可选的,用于排序的所述S-RSSI功率排序是子帧上所有剩余资源的RSSI线性均值。
可选的,设置进行资源调度的SPS counter,是在配置的半持续调度SPS counter范围内,随机选择SPS counter,作为本次资源选择的所有业务包的SPS counter。
在实施本申请实施例提供的技术方案时,还可以按如下方式实施。
本申请实施例中提供了一种计算机可读存储介质,所述计算机可读存储介质存储有执行多载波下的资源选择方法的计算机程序,具体的,该方法如下:
根据各载波上的资源占用排除结果确定至少一个候选载波;
将所述候选载波上的资源置为可用后,根据sensing结果进行排除后获得可用资源集合;
在所述可用资源集合中选择发送资源,并设置进行资源调度的SPS counter。
可选的,在所述可用资源集合中选择发送资源,是对S-RSSI进行排序,在S-RSSI较低的所述可用资源集合中选择发送资源。
可选的,根据sensing结果进行排除后获得可用资源集合,包括:
在所述候选载波上,对skip子帧对应的候选资源进行排除;和/或,在所述候选载波上,分别对已占用资源对应的预约资源进行排除;
在排除后,分别按照各业务包大小计算得出剩余资源比例,若该比例未全部达到或者高于配置的比例阈值,则每次将接收功率门限值增加预设值后重新执行排除过程,直至在排除后,分别按照各业务包大小计算得出的剩余资源比例全部达到或高于配置的比例阈值为止;
将全部达到或高于配置的比例阈值时的可用资源作为所述可用资源集合。
可选的,根据sensing结果进行排除后获得可用资源集合,包括:
在所述候选载波上,对skip子帧对应的候选资源进行排除;和/或,在所述候选载波上,分别对已占用资源对应的预约资源进行排除;
在排除后,确定可用子帧个数,若可用子帧的数量或者可用子帧占所有候选资源子帧的比例未达到或者高于配置的数量阈值或者比例阈值,则每次将接收功率门限值增加预设值后重新执行排除过程,直至在排除后,可用子帧的数量或者可用子帧占所有候选资源子帧的比例达到或者高于配置的数量阈值或者比例阈值为止,所述可用子帧是指能够满足可同时发送所有业务包的子帧;
将达到或高于配置的数量阈值或者比例阈值时的可用资源作为所述可用资源集合。
可选的,在所述可用资源集合中选择发送资源,包括:
在每个候选载波上,在所述可用资源集合中进行S-RSSI功率排序,选择出功率最低的达到配置比例的可用资源作为可用资源子集;
按照次序依次为各个发送业务包选择可用的发送资源;
分别为每个业务包从可用的发送资源中选择发送资源,或者,为第一个发送业务包从可用的发送资源中选择发送资源后分别为其它每个业务包从可用的发送资源中选择发送资源。
可选的,分别为每个业务包从可用的发送资源中选择发送资源,包括:
在所述可用资源子集中,根据配置的最大发送次数,或者根据计算确定满足发送功率不低于配置的可靠发送功率时、同一子帧上允许的最大发送次数;
确定与同一UE发送其他业务包在时域上交叠的可用资源,记为优先选择资源子集;
从优先选择资源子集中随机选择出发送资源,其中,该资源是根据该发送资源所在子帧上的所有发送次数,计算可用发送功率或者同一子帧内的发送次数后,可用发送功率低于或等于配置的可靠发送功率门限值,或者同一子帧内的发送次数未超出配置的同一子帧内的最大发送次数;
在已选择的发送资源中,在满足单业务包重传发送资源限制的条件下,在优先选择资源子集中选择重传资源;
从所述重传资源中确定出发送资源,其中,该资源上的可用发送功率低于配置的可靠发送功率门限/或者该资源上的发送次数大于配置的最大发送次数。
可选的,在从优先选择资源子集中随机选择出发送资源时,进一步包括:
若选择次数达到配置的次数门限值,在优先选择资源子集以外的可用资源子集中随机选择出发送资源。
可选的,在选择重传资源时,进一步包括:
若从所述重传资源中确定出发送资源的过程中,选择次数达到配置的次数门限值,在优先选择资源子集以外的可用资源子集中随机选择出重传资源。
可选的,在按照次序依次为各个发送业务包选择发送资源时,所述次序是根据发送业务包占用频域资源的大小和/或发送业务包对应的载波编号确定的。
可选的,在所述可用资源集合中选择发送资源,包括:
在每个候选载波上,在所述可用资源集合中进行S-RSSI功率排序,选择出功率最低的达到配置比例的可用资源作为可用资源子集;
按照次序依次为各个发送业务包选择可用的发送资源;
为第一个发送业务包从可用的发送资源中选择满足重传次数和初重传发送资源限制的子帧,并在选择的子帧上为第一个发送业务包选择发送资源;
分别为其它每个业务包从可用的发送资源中选择发送资源。
可选的,分别为其它每个业务包从可用的发送资源中选择发送资源,包括:
在上一个业务包已选择了资源的可用子帧上,为当前业务包分配发送资源;
在根据配置或者计算得出的满足发送功率不低于配置的可靠发送功率时,确定同一子帧上允许的最大发送次数,如果当前分配资源的子帧上已超出最大发送次数限制,则为当前业务包重新选择其他未被选择的可用子帧进行发送资源分配。
可选的,用于排序的所述S-RSSI功率排序是子帧上所有剩余资源的RSSI线性均值。
可选的,设置进行资源调度的SPS counter,是在配置的半持续调度SPS counter范围内,随机选择SPS counter,作为本次资源选择的所有业务包的SPS counter。
图5为多载波下的资源选择装置结构示意图,如图所示,可以包括:
载波确定模块501,用于根据各载波上的资源占用排除结果确定至少一个候选载波;
可用资源确定模块502,用于将所述候选载波上的资源置为可用后,根据sensing结果进行排除后获得可用资源集合;
发送资源确定模块503,用于在所述可用资源集合中选择发送资源,并设置进行资源调度的SPS counter。
为了描述的方便,以上所述装置的各部分以功能分为各种模块或单元分别描述。当然,在实施本申请时可以把各模块或单元的功能在同一个或多个软件或硬件中实现。
综上所述,相对于现有的单载波资源选择机制,针对引入载波聚合后在多载波上进行业务发送将造成更为显著的半双工影响从而造成接收机会丧失、影响系统性能问题,在本申请实施例提供的技术方案中,在考虑多载波同时进行业务发送时功率分配的情况时,针对来自同一业务包的多个分段业务包的资源选择,设置相同的SPS counter以保证分段业务包的资源重选时机保持一致,从而提供了一种尽量减少半双工影响、降低接收机会丢失影响及skip子帧数量的资源选择方案,同时避免了以多个业务包同时发送造成功率分配过于严重的问题。
本领域内的技术人员应明白,本申请的实施例可提供为方法、系统、或计算机程序产品。因此,本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形 式。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然,本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样,倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内,则本申请也意图包含这些改动和变型在内。

Claims (28)

  1. 一种多载波下的资源选择方法,其特征在于,包括:
    根据各载波上的资源占用排除结果确定至少一个候选载波;
    将所述候选载波上的资源置为可用后,根据感知sensing结果进行排除后获得可用资源集合;
    在所述可用资源集合中选择发送资源,并设置进行资源调度的半持续调度计数器SPS counter。
  2. 如权利要求1所述的方法,其特征在于,在所述可用资源集合中选择发送资源,是对Sidelink-接收的信号强度指示S-RSSI进行排序,在S-RSSI较低的所述可用资源集合中选择发送资源。
  3. 如权利要求1所述的方法,其特征在于,根据sensing结果进行排除后获得可用资源集合,包括:
    在所述候选载波上,对skip子帧对应的候选资源进行排除;和/或,在所述候选载波上,分别对已占用资源对应的预约资源进行排除;
    在排除后,分别按照各业务包大小计算得出剩余资源比例,若该比例未全部达到或者高于配置的比例阈值,则每次将接收功率门限值增加预设值后重新执行排除过程,直至在排除后,分别按照各业务包大小计算得出的剩余资源比例全部达到或高于配置的比例阈值为止;
    将全部达到或高于配置的比例阈值时的可用资源作为所述可用资源集合。
  4. 如权利要求1所述的方法,其特征在于,根据sensing结果进行排除后获得可用资源集合,包括:
    在所述候选载波上,对skip子帧对应的候选资源进行排除;和/或,在所述候选载波上,分别对已占用资源对应的预约资源进行排除;
    在排除后,确定可用子帧个数,若可用子帧的数量或者可用子帧占所有候选资源子帧的比例未达到或者高于配置的数量阈值或者比例阈值,则每次将接收功率门限值增加预设值后重新执行排除过程,直至在排除后,可用子帧的数量或者可用子帧占所有候选资源子帧的比例达到或者高于配置的数量阈值或者比例阈值为止,所述可用子帧是指能够满足可同时发送所有业务包的子帧;
    将达到或高于配置的数量阈值或者比例阈值时的可用资源作为所述可用资源集合。
  5. 如权利要求1所述的方法,其特征在于,在所述可用资源集合中选择发送资源,包括:
    在每个候选载波上,在所述可用资源集合中进行S-RSSI功率排序,选择出功率最低的达到配置比例的可用资源作为可用资源子集;
    按照次序依次为各个发送业务包选择可用的发送资源;
    分别为每个业务包从可用的发送资源中选择发送资源,或者,为第一个发送业务包从可用的发送资源中选择发送资源后分别为其它每个业务包从可用的发送资源中选择发送资源。
  6. 如权利要求5所述的方法,其特征在于,分别为每个业务包从可用的发送资源中选择发送资源,包括:
    在所述可用资源子集中,根据配置的最大发送次数,或者根据计算确定满足发送功率不低于配置的可靠发送功率时、同一子帧上允许的最大发送次数;
    确定与同一用户设备UE发送其他业务包在时域上交叠的可用资源,记为优先选择资源子集;
    从优先选择资源子集中随机选择出发送资源,其中,该资源是根据该发送资源所在子帧上的所有发送次数,计算可用发送功率或者同一子帧内的发送次数后,可用发送功率低于或等于配置的可靠发送功率门限值,或者同一子帧内的发送次数未超出配置的同一子帧内的最大发送次数;
    在已选择的发送资源中,在满足单业务包重传发送资源限制的条件下,在优先选择资源子集中选择重传资源;
    从所述重传资源中确定出发送资源,其中,该资源上的可用发送功率低于配置的可靠发送功率门限/或者该资源上的发送次数大于配置的最大发送次数。
  7. 如权利要求6所述的方法,其特征在于,在从优先选择资源子集中随机选择出发送资源时,进一步包括:
    若选择次数达到配置的次数门限值,在优先选择资源子集以外的可用资源子集中随机选择出发送资源。
  8. 如权利要求6所述的方法,其特征在于,在选择重传资源时,进一步包括:
    若从所述重传资源中确定出发送资源的过程中,选择次数达到配置的次数门限值,在优先选择资源子集以外的可用资源子集中随机选择出重传资源。
  9. 如权利要求5至8任一所述的方法,其特征在于,在按照次序依次为各个发送业务包选择发送资源时,所述次序是根据发送业务包占用频域资源的大小和/或发送业务包对应的载波编号确定的。
  10. 如权利要求1所述的方法,其特征在于,在所述可用资源集合中选择发送资源, 包括:
    在每个候选载波上,在所述可用资源集合中进行S-RSSI功率排序,选择出功率最低的达到配置比例的可用资源作为可用资源子集;
    按照次序依次为各个发送业务包选择可用的发送资源;
    为第一个发送业务包从可用的发送资源中选择满足重传次数和初重传发送资源限制的子帧,并在选择的子帧上为第一个发送业务包选择发送资源;
    分别为其它每个业务包从可用的发送资源中选择发送资源。
  11. 如权利要求10所述的方法,其特征在于,分别为其它每个业务包从可用的发送资源中选择发送资源,包括:
    在上一个业务包已选择了资源的可用子帧上,为当前业务包分配发送资源;
    在根据配置或者计算得出的满足发送功率不低于配置的可靠发送功率时,确定同一子帧上允许的最大发送次数,如果当前分配资源的子帧上已超出最大发送次数限制,则为当前业务包重新选择其他未被选择的可用子帧进行发送资源分配。
  12. 如权利要求10所述的方法,其特征在于,用于排序的所述S-RSSI功率排序是子帧上所有剩余资源的RSSI线性均值。
  13. 如权利要求1至12任一所述的方法,其特征在于,设置进行资源调度的SPS counter,是在配置的半持续调度SPS counter范围内,随机选择SPS counter,作为本次资源选择的所有业务包的SPS counter。
  14. 一种计算机设备,其特征在于,包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序,所述处理器执行所述计算机程序时按以下方法实现多载波下的资源选择:
    根据各载波上的资源占用排除结果确定至少一个候选载波;
    将所述候选载波上的资源置为可用后,根据sensing结果进行排除后获得可用资源集合;
    在所述可用资源集合中选择发送资源,并设置进行资源调度的SPS counter。
  15. 如权利要求14所述的设备,其特征在于,在所述可用资源集合中选择发送资源,是对S-RSSI进行排序,在S-RSSI较低的所述可用资源集合中选择发送资源。
  16. 如权利要求14所述的设备,其特征在于,根据sensing结果进行排除后获得可用资源集合,包括:
    在所述候选载波上,对skip子帧对应的候选资源进行排除;和/或,在所述候选载波上,分别对已占用资源对应的预约资源进行排除;
    在排除后,分别按照各业务包大小计算得出剩余资源比例,若该比例未全部达到或者高于配置的比例阈值,则每次将接收功率门限值增加预设值后重新执行排除过程,直至在排除后,分别按照各业务包大小计算得出的剩余资源比例全部达到或高于配置的比例阈值为止;
    将全部达到或高于配置的比例阈值时的可用资源作为所述可用资源集合。
  17. 如权利要求14所述的设备,其特征在于,根据sensing结果进行排除后获得可用资源集合,包括:
    在所述候选载波上,对skip子帧对应的候选资源进行排除;和/或,在所述候选载波上,分别对已占用资源对应的预约资源进行排除;
    在排除后,确定可用子帧个数,若可用子帧的数量或者可用子帧占所有候选资源子帧的比例未达到或者高于配置的数量阈值或者比例阈值,则每次将接收功率门限值增加预设值后重新执行排除过程,直至在排除后,可用子帧的数量或者可用子帧占所有候选资源子帧的比例达到或者高于配置的数量阈值或者比例阈值为止,所述可用子帧是指能够满足可同时发送所有业务包的子帧;
    将达到或高于配置的数量阈值或者比例阈值时的可用资源作为所述可用资源集合。
  18. 如权利要求14所述的设备,其特征在于,在所述可用资源集合中选择发送资源,包括:
    在每个候选载波上,在所述可用资源集合中进行S-RSSI功率排序,选择出功率最低的达到配置比例的可用资源作为可用资源子集;
    按照次序依次为各个发送业务包选择可用的发送资源;
    分别为每个业务包从可用的发送资源中选择发送资源,或者,为第一个发送业务包从可用的发送资源中选择发送资源后分别为其它每个业务包从可用的发送资源中选择发送资源。
  19. 如权利要求18所述的设备,其特征在于,分别为每个业务包从可用的发送资源中选择发送资源,包括:
    在所述可用资源子集中,根据配置的最大发送次数,或者根据计算确定满足发送功率不低于配置的可靠发送功率时、同一子帧上允许的最大发送次数;
    确定与同一UE发送其他业务包在时域上交叠的可用资源,记为优先选择资源子集;
    从优先选择资源子集中随机选择出发送资源,其中,该资源是根据该发送资源所在子帧上的所有发送次数,计算可用发送功率或者同一子帧内的发送次数后,可用发送功率低于或等于配置的可靠发送功率门限值,或者同一子帧内的发送次数未超出配置的同一子帧 内的最大发送次数;
    在已选择的发送资源中,在满足单业务包重传发送资源限制的条件下,在优先选择资源子集中选择重传资源;
    从所述重传资源中确定出发送资源,其中,该资源上的可用发送功率低于配置的可靠发送功率门限/或者该资源上的发送次数大于配置的最大发送次数。
  20. 如权利要求19所述的设备,其特征在于,在从优先选择资源子集中随机选择出发送资源时,进一步包括:
    若选择次数达到配置的次数门限值,在优先选择资源子集以外的可用资源子集中随机选择出发送资源。
  21. 如权利要求19所述的设备,其特征在于,在选择重传资源时,进一步包括:
    若从所述重传资源中确定出发送资源的过程中,选择次数达到配置的次数门限值,在优先选择资源子集以外的可用资源子集中随机选择出重传资源。
  22. 如权利要求18至21任一所述的设备,其特征在于,在按照次序依次为各个发送业务包选择发送资源时,所述次序是根据发送业务包占用频域资源的大小和/或发送业务包对应的载波编号确定的。
  23. 如权利要求14所述的设备,其特征在于,在所述可用资源集合中选择发送资源,包括:
    在每个候选载波上,在所述可用资源集合中进行S-RSSI功率排序,选择出功率最低的达到配置比例的可用资源作为可用资源子集;
    按照次序依次为各个发送业务包选择可用的发送资源;
    为第一个发送业务包从可用的发送资源中选择满足重传次数和初重传发送资源限制的子帧,并在选择的子帧上为第一个发送业务包选择发送资源;
    分别为其它每个业务包从可用的发送资源中选择发送资源。
  24. 如权利要求23所述的设备,其特征在于,分别为其它每个业务包从可用的发送资源中选择发送资源,包括:
    在上一个业务包已选择了资源的可用子帧上,为当前业务包分配发送资源;
    在根据配置或者计算得出的满足发送功率不低于配置的可靠发送功率时,确定同一子帧上允许的最大发送次数,如果当前分配资源的子帧上已超出最大发送次数限制,则为当前业务包重新选择其他未被选择的可用子帧进行发送资源分配。
  25. 如权利要求23所述的设备,其特征在于,用于排序的所述S-RSSI功率排序是子帧上所有剩余资源的RSSI线性均值。
  26. 如权利要求14至25任一所述的设备,其特征在于,设置进行资源调度的SPS counter,是在配置的半持续调度SPS counter范围内,随机选择SPS counter,作为本次资源选择的所有业务包的SPS counter。
  27. 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质存储有执行权利要求1至13任一所述方法的计算机程序。
  28. 一种多载波下的资源选择装置,其特征在于,包括:
    载波确定模块,用于根据各载波上的资源占用排除结果确定至少一个候选载波;
    可用资源确定模块,用于将所述候选载波上的资源置为可用后,根据sensing结果进行排除后获得可用资源集合;
    发送资源确定模块,用于在所述可用资源集合中选择发送资源,并设置进行资源调度的SPS counter。
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