CN113677023A - Data transmission method and communication device - Google Patents

Data transmission method and communication device Download PDF

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Publication number
CN113677023A
CN113677023A CN202010417960.3A CN202010417960A CN113677023A CN 113677023 A CN113677023 A CN 113677023A CN 202010417960 A CN202010417960 A CN 202010417960A CN 113677023 A CN113677023 A CN 113677023A
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probability
time slot
time
value
data
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黎超
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN202010417960.3A priority Critical patent/CN113677023A/en
Priority to PCT/CN2021/092561 priority patent/WO2021228010A1/en
Publication of CN113677023A publication Critical patent/CN113677023A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies

Abstract

The embodiment of the application discloses a data transmission method and a communication device, which are suitable for the fields of V2X, Internet of vehicles, intelligent Internet of vehicles, auxiliary driving and the like, and are used for improving the reliability of information transmission in a system, wherein the method comprises the following steps: the method comprises the steps that a sending terminal device obtains configuration information, wherein the configuration information comprises first parameter information, and the first parameter information is used for determining the number of randomly selected first time slots; the sending end equipment randomly selects a first time slot for side row transmission in a time domain resource set according to the number of the first time slots; and then sending the data to be transmitted in the frequency domain resource on the first time slot, wherein in the embodiment of the application, the randomly selected time slot resource of the sending end equipment can be restricted by the first time slot number and the time domain resource set determined by the first parameter information in the configuration information, and the probability of conflict between the randomly selected resource and the reserved resource is increased, so that the reliability of information transmission of the communication device in the system is improved.

Description

Data transmission method and communication device
Technical Field
The present application relates to the field of communications, and in particular, to a data transmission method and a communication apparatus.
Background
The third generation partnership project (3 GPP) proposed cellular-based vehicle to all (C-V2X) internet communication technology. With the rapid development of the fifth generation mobile communication (5G) technology, the car networking technology (5G new radio-to-electronic, 5G NR-V2X) based on the 5G new air interface has attracted more and more attention, and the technical performance of C-V2X has been further improved.
Currently, 3GPP has developed the standardization work of NR-V2X of release 16 (Release, Rel-16). In the resource selection mode of Rel-16, the communication device selects resources through a sensing (sending) mechanism. The sensing mechanism can be understood as sensing the resource usage situation of other communication devices in the surrounding environment through the sensing window, and then autonomously selecting the resource for information transmission, and since there is no need to request the base station for transmitting information, no additional signaling overhead is caused. Although the sensing mechanism has certain advantages, the sensing window continuously senses the condition that other communication devices in the surrounding environment use resources, which increases the power of the communication devices, in order to solve this problem, in release-17, the communication devices do not use the sensing mechanism any more, but use a random resource selection method to select resources for information transmission.
When the communication device of Rel-17 and the communication device of Rel-16 select resources in a resource pool, the random resource selection will treat all resources in the resource pool as available resources, including the resources that have been reserved by the communication device of Rel-16. When the communication apparatus of Rel-17 selects the resource reserved by Rel-16, a situation occurs in which a plurality of communication apparatuses preempt the same resource and conflict of resource selection occurs, thereby reducing the reliability of information transmission by the communication apparatuses in the system.
Disclosure of Invention
The embodiment of the application provides a data transmission method and a communication device, which improve the reliability of information transmission in a system. The data transmission method can be applied to a communication system which comprises sending end equipment, receiving end equipment and network equipment. The sending end equipment and the receiving end equipment communicate through a PC5 interface, and when the sending end equipment is positioned in the coverage range of the network equipment, the sending end equipment can acquire configuration information from the network equipment; both the sending end device and the receiving end device can be terminals; or the sending end device and the receiving end device may be network devices (such as base stations) of the same type or different types; or the sending end equipment is a Road Side Unit (RSU), and the receiving end equipment is a terminal; or the sending end equipment is a terminal, and the receiving end equipment is an RSU; the execution main body of the method is the sending end device, or the execution main body of the method may be a processor in the sending end device, or a chip system. Alternatively, the RSU may be a terminal or a base station.
In a first aspect, an embodiment of the present application provides a data transmission method, where a sending end receives configuration information indicated by signaling in a sidelink (sidelink) resource pool by a network device, where the configuration information includes first parameter information, and the first parameter information is used to determine a randomly selected first time slot number; randomly selecting time slots with the first time slot number from the time domain resource set as candidate resources, and selecting the first time slots for side row transmission from the candidate resources; at least one frequency domain resource is selected from a plurality of frequency domain resources on the first time slot to send data to be transmitted. In the embodiment of the application, the number of the first time slots and the time domain resource set determined by the first parameter information in the configuration information may restrict the random selection of the time slot resources by the sending end device. The time domain resource set may or may not include the resources reserved by the communication apparatus of Rel-16, and the time domain resource set does not include the resources reserved by the communication apparatus of Rel-16, so that the situation that the communication apparatus of Rel-16 preempts the same resources can be avoided. The time domain resource set comprises resources reserved by a communication device of Rel-16, if the time domain resource set comprises 10 time slot resources and the number of the first time slots is 3 through the constraint of the number of the first time slots, the sending end equipment can randomly select 3 time slots from the 10 time slots, and select the first time slot from the 3 time slots for transmitting data, and through the constraint of the number of the first time slots, the probability of collision between the randomly selected resources and the reserved resources can be reduced, so that the reliability of information transmission of the communication device in the system is improved.
In an optional implementation manner, the first parameter information includes probability information and/or indication information of the first time slot number; it is to be understood that the randomly selected first number of time slots may be determined directly or indirectly by the first parameter information; the first time slot number may be determined indirectly through probability information, and the indication information may directly indicate the first time slot number. For example, the indication information is "2", and the first slot number is 2.
In an alternative implementation, randomly selecting a first slot for a sidelink transmission within a set of time domain resources according to a first number of slots may include: randomly selecting time slots with the first time slot number in the time domain resource set, taking the time slots with the first time slot number as candidate resources, and then randomly selecting one first time slot from the candidate resources for transmitting data.
In an optional implementation manner, the configuration information further includes time slot information, and the time slot information is used to determine a time domain resource set; randomly selecting a first slot for a sidelink transmission within a set of time domain resources according to a first number of slots may comprise: the terminal determines a time domain resource set according to the initial time slot and the time slot information, wherein the initial time slot is a first time slot which can be used for data transmission after the terminal acquires the data packet; randomly selecting time slots with a first time slot number in a time domain resource set; a first time slot is determined among the time slots of the first number of time slots. In this example, the terminal device may determine the time domain resource set according to the timeslot information configured by the network device.
In an alternative implementation, the slot information includes at least one of an end slot available for transmitting data, an interval duration between the start slot and the end slot, or a second number of slots.
In an alternative implementation, the probability information includes a first probability; the first probability is the probability of selecting the needed frequency domain resources from a plurality of frequency domain resources on a time slot, the terminal determines the selectable frequency domain resources according to the first frequency domain resource quantity and the first probability needed by the data to be transmitted, and then determines the time slot quantity according to the determined selectable frequency domain resources and the second frequency domain resource quantity on one time slot. In this example, in consideration of the size of the data to be transmitted, the number of the first time slots for random resource selection may be determined by the size of the data to be transmitted, the first probability, and the second frequency domain resource number on one time slot.
In an optional implementation manner, the probability information includes a plurality of probability values, each of the plurality of probability values corresponds to a timeslot group, and one timeslot group includes at least one timeslot; the method may further comprise: determining the number of first time slots in a plurality of time slot groups in a time domain resource set according to a plurality of probability values; in this example, the density of the resources randomly selected by the terminal may be controlled by dividing the slot groups, for example, the probability values are the same, and the slots (candidate resources) available for selection are dispersed as much as possible, thereby reducing the probability of collision of the multiple terminal selection resources.
In an alternative implementation, the nth probability value of the plurality of probability values is less than or equal to the (n +1) th probability value, or the nth probability value is greater than or equal to the (n +1) th probability value; the probability values may be increased or decreased in steps, in this example, by configuring different probability values for different groups of time slots, the congestion of the transmission may be reduced. For example, for a higher delay requirement, the probability value may be gradually decreased, so that the data with a higher delay requirement has more chances to select the timeslot resource in the timeslot group located earlier, and is transmitted preferentially. For the service data with low time delay requirement, the probability value can be gradually increased, so that the data with high time delay requirement has more chances to select the time slot resource in the time slot group with the later position, thereby reducing the probability of transmission congestion.
In an alternative implementation, the probability information includes a plurality of probability values for determining the first number of time slots, and the configuration information includes: a plurality of probability values and a plurality of QoS values corresponding to the plurality of probability values.
In an optional implementation, the method further comprises: the sending end device determines a first QoS value, for example, the first QoS value may be a priority, when the sending end device sends data of different priorities, probability values used are different, and the first QoS value belongs to a plurality of QoS values; then, determining a first probability value corresponding to the first QoS according to the first QoS value, wherein the first probability value is used for determining the number of the first time slots; in this example, different priorities are configured to correspond to different probability values (or the number of time slots), so that the potential conflict condition with the resource selection of the R16 communication device is reduced, and it is further ensured that there are still more opportunities for preferentially sending high-priority traffic, the opportunity for sending emergency messages is improved, and the transmission delay is reduced.
In an alternative implementation, the QoS value is a parameter value of at least one of a channel busy ratio CBR, a channel occupied ratio CR and priority information.
In an alternative implementation, the plurality of QoS values are: a plurality of thresholds corresponding to the plurality of CBR preset ranges, the method further comprising: the sending end equipment obtains a CBR measured value, wherein the CBR measured value can be measured by a terminal, or can be measured by other equipment, and the measured value is sent to the terminal, or the measured value can be indicated by a base station; the CBR measured value belongs to a first CBR preset range, the sending terminal equipment determines a second probability value corresponding to the first CBR preset range, the second probability value comprises a plurality of probability values, and the second probability value is used for determining the number of the first time slots; in this example, different CBR preset ranges may correspond to different probability values (or the number of time slots), the terminal obtains a measured value of the CBR, the measured value belongs to a first CBR preset range, the first CBR preset range corresponds to a first probability value, a candidate resource of the first time slot number is determined by the first probability value, a potential conflict with a reserved resource of the R16 communication device is reduced by a constraint of the first time slot number (candidate resource), and a chance of sending an emergency message is further guaranteed to be improved under a certain interference condition.
In an optional implementation manner, the first parameter information includes a data initial transmission parameter value and a data retransmission parameter value; the randomly selecting a first slot for sidelink transmission within the set of time domain resources according to the number of first slots may specifically include: the data initial transmission parameter value and the data retransmission parameter value may be probability values, or the data initial transmission parameter value and the data retransmission parameter value may also be one value, and the value may directly indicate the number of the first time slots; the method comprises the steps that data to be transmitted are initially transmitted data, and first time slots used for side transmission are randomly selected in a time domain resource set according to the number of the first time slots determined by an initial data transmission parameter value (such as an initial data transmission parameter value); or, the data to be transmitted is retransmission data, and a first time slot for side transmission is randomly selected in the time domain resource set according to the first time slot number determined by the data retransmission parameter value (such as the retransmission parameter value); the initial transmission data and the retransmission data correspond to different probability values, and the probability value of the retransmission data is configured to be greater than the probability value of the initial transmission data according to different requirements of services, so that more chances can be provided for transmitting the retransmission data.
In an optional implementation manner, the terminal may determine the retransmission probability value or the initial transmission probability value according to the priority of the data to be transmitted, and the specific corresponding relationship between the multiple retransmission probability values and the priority parameter values and between the multiple initial transmission probability values and the priority parameter values, the terminal may determine a first priority of the data to be transmitted, determine the data to be transmitted as the retransmitted data, then determine a first retransmission probability value corresponding to the first priority according to the corresponding relationship between the priority and the probability value, and determine the first time slot number according to the first retransmission probability value; further, it is ensured that the high-priority service still has more opportunities to be sent preferentially, thereby improving the opportunity of sending the emergency message and reducing the transmission delay.
In an optional implementation manner, the configuration information includes a plurality of CBR preset ranges, a plurality of corresponding retransmission probability values, and a plurality of corresponding initial transmission probability values; the terminal acquires a CBR measured value; the CBR measured value belongs to a first CBR preset range, the data to be transmitted are retransmission data, the terminal determines a second retransmission probability value corresponding to the first CBR preset range, the first CBR preset range belongs to a plurality of CBR preset ranges, and the second retransmission probability value is used for determining the number of first time slots; and the data to be transmitted is initial transmission data, the terminal determines a second initial transmission probability value corresponding to the first CBR preset range, and the second initial transmission probability value is used for determining the number of the first time slots.
In an optional implementation manner, the last time slot in the time domain resource set is located within a time slot corresponding to a delay margin allowed for transmitting the data to be transmitted.
In an alternative implementation, the configuration information is indicated by signaling in the sidelink resource pool.
In a second aspect, an embodiment of the present application provides a communication apparatus, where the communication apparatus has a function that is implemented by the sending-end device in the first aspect; the function can be realized by hardware, and can also be realized by executing corresponding software by hardware; the hardware or software comprises one or more modules corresponding to the functions, wherein the modules comprise a processing module and a transceiver module:
the receiving and sending module is used for acquiring configuration information, wherein the configuration information comprises first parameter information, and the first parameter information is used for determining the number of randomly selected first time slots; the processing module is used for randomly selecting a first time slot for sideline transmission in the time domain resource set according to the number of the first time slots acquired by the transceiving module; and the transceiver module is also used for sending the data to be transmitted on the first time slot. In the embodiment of the application, the number of the first time slots and the time domain resource set determined by the first parameter information in the configuration information may restrict the random selection of the time slot resources by the sending end device. The time domain resource set may or may not include the resources reserved by the communication apparatus of Rel-16, and the time domain resource set does not include the resources reserved by the communication apparatus of Rel-16, so that the situation that the communication apparatus of Rel-16 preempts the same resources can be avoided. The time domain resource set comprises resources reserved by a communication device of Rel-16, if the time domain resource set comprises 10 time slot resources and the number of the first time slots is 3 through the constraint of the number of the first time slots, the sending end equipment can randomly select 3 time slots from the 10 time slots, and select the first time slot from the 3 time slots for transmitting data, and through the constraint of the number of the first time slots, the probability of collision between the randomly selected resources and the reserved resources can be reduced, so that the reliability of information transmission of the communication device in the system is improved.
In an alternative implementation, the first parameter information includes probability information and/or information indicative of the number of first time slots.
In an optional implementation manner, the processing module is further configured to randomly select a time slot of the first number of time slots in the time domain resource set; and determines the first slot among the slots of the first slot number.
In an optional implementation manner, the configuration information further includes time slot information, and the time slot information is used to determine a time domain resource set; the processing module is further used for determining a time domain resource set according to the initial time slot and the time slot information, wherein the initial time slot is a first time slot which can be used for data transmission; randomly selecting time slots with a first time slot number in a time domain resource set; the first time slot is then determined among the time slots of the first number of time slots.
In an alternative implementation, the slot information includes at least one of an end slot available for transmitting data, an interval duration between the start slot and the end slot, or a second number of slots.
In an alternative implementation, the probability information includes a first probability; and the processing module is also used for determining the time slot number according to the first frequency domain resource number, the first probability and the second frequency domain resource number on one time slot, which are required by the data to be transmitted.
In an optional implementation manner, the probability information includes a plurality of probability values, each of the plurality of probability values corresponds to a timeslot group, and one timeslot group includes at least one timeslot; the processing module is further configured to determine a number of first time slots in a plurality of time slot groups in the time domain resource set according to the plurality of probability values.
In an alternative implementation, the nth probability value of the plurality of probability values is less than or equal to the (n +1) th probability value, or the nth probability value is greater than or equal to the (n +1) th probability value.
In an optional implementation manner, the probability information includes a plurality of probability values, and the configuration information includes: a plurality of probability values and a plurality of QoS values corresponding to the plurality of probability values.
In an optional implementation manner, the processing module is further configured to determine a first QoS value, where the first QoS value belongs to the plurality of QoS values; a first probability value corresponding to the first QoS is determined according to the first QoS value, the first probability value belongs to a plurality of probability values, and the first probability value is used for determining the first time slot number.
In an alternative implementation, the QoS value is a parameter value of at least one of a channel busy ratio CBR, a channel occupied ratio CR and priority information.
In an alternative implementation, the Qos values are: a plurality of thresholds corresponding to the plurality of CBR preset ranges; the processing module is also used for acquiring a CBR measured value; and determining a second probability value corresponding to the first CBR preset range, wherein the second probability value is contained in a plurality of probability values, and the second probability value is used for determining the number of the first time slots.
In an optional implementation manner, the first parameter information includes a data initial transmission parameter value and a data retransmission parameter value; the processing module is further used for selecting a first time slot for sideline transmission randomly in the time domain resource set according to the first time slot number determined by the data initial transmission parameter value, wherein the data to be transmitted is initial transmission data; or, the data to be transmitted is retransmission data, and a first time slot for side transmission is randomly selected in the time domain resource set according to the first time slot number determined by the data retransmission parameter value.
In an optional implementation manner, the last time slot in the time domain resource set is located within a time slot corresponding to a delay margin allowed for transmitting the data to be transmitted.
In an alternative implementation, the configuration information is indicated by signaling in the sidelink resource pool.
In a third aspect, an embodiment of the present application provides a communication apparatus, including a processor, coupled with at least one memory, and configured to read a computer program stored in the at least one memory, so that the apparatus performs the method of any one of the above first aspects.
In a fourth aspect, embodiments of the present application provide a computer-readable medium for storing a computer program, which, when executed on a computer, causes the computer to perform the method of any one of the above first aspects.
In a fifth aspect, an embodiment of the present application provides a chip, including a processor and a communication interface, where the processor is configured to read an instruction to perform the method of any one of the first aspect.
Drawings
Fig. 1 is a schematic view of a communication system in an embodiment of the present application;
FIG. 2 is a diagram illustrating resource pools in an embodiment of the present application;
fig. 3 is a schematic flowchart of an embodiment of a data transmission method in an embodiment of the present application;
FIG. 4 is a diagram illustrating a set of time domain resources according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an embodiment of a communication device according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of another embodiment of a communication device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
The term "and/or" appearing in the present application may be an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this application generally indicates that the former and latter related objects are in an "or" relationship.
The terms "first," "second," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Moreover, the terms "comprises," "comprising," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or modules is not necessarily limited to those steps or modules explicitly listed, but may include other steps or modules not expressly listed or inherent to such process, method, article, or apparatus.
The embodiment of the present application provides a data transmission method, which may be applied to a communication system including, but not limited to, a 5G communication system, a 6G communication system, a system in which multiple communication systems are merged, or a communication system that evolves in the future. Such as Long Term Evolution (LTE) systems, New Radio (NR) systems, and 3rd generation partnership project (3 GPP) related communication systems, etc. Referring to fig. 1, the communication system includes a sending end device 101, a receiving end device 102, and a network device 103. The link between the sending end device 101 and the receiving end device 102 is a sidelink (sidelink), that is, the sending end device 101 and the receiving end device 102 communicate via a PC5 interface (a PC5 interface is a direct communication interface between V2X terminals). The sending-end device 101 may be located within the coverage of the network device 103, or may be located outside the coverage of the network device 103 (out-of-coverage). When the sending end device 101 is located within the coverage area of the network device 103, the sending end device 101 may obtain configuration information from the network device 103, where the configuration information includes first parameter information, the first parameter information is used to determine the randomly selected first time slot number, and the sending end device 101 may randomly select, according to the first time slot number, a first time slot for side transmission in a time domain resource set, and then send data to be transmitted in the first time slot.
In the embodiment of the application, the number of the first time slots and the time domain resource set determined by the first parameter information in the configuration information may restrict the random selection of the time slot resources by the sending end device. The time domain resource set may include the resource reserved by the communication apparatus of Rel-16 or may not include the resource reserved by the communication apparatus of Rel-16, and the time domain resource set does not include the resource reserved by the communication apparatus of Rel-16, so that the situation that the communication apparatus of Rel-16 preempts the same resource can be avoided. If the communication apparatus including Rel-16 in the time domain resource set reserves the time slot resource, for example, the time domain resource set includes 10 time slot resources, and the first time slot number is 3, the sending end device may randomly select 3 time slots from the 10 time slots, and select one first time slot from the 3 time slots for transmitting data, and the probability that the reserved resource can be selected may be
Figure BDA0002494570770000061
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Through the constraint of the first time slot number, the probability of conflict between the selected resource and the reserved resource can be reduced, and therefore the reliability of information transmission of the communication device in the system is improved.
In this application, network devices include, but are not limited to: an evolved Node B (NodeB or eNB or e-NodeB) in LTE, a base station (gnnodeb or gNB) or a transmission reception/Transmission Reception Point (TRP) in NR, a base station for subsequent evolution in 3GPP, a wireless relay Node, a wireless backhaul Node, and the like. The base station may be: macro base stations, micro base stations, pico base stations, small stations, relay stations, or balloon stations, etc. The network device may also be a wireless controller, a Centralized Unit (CU), and/or a Distributed Unit (DU) in a Cloud Radio Access Network (CRAN) scenario.
In the application, both the sending terminal device and the receiving terminal device can be terminals; or both the sending end device and the receiving end device may be network devices (such as base stations); or the sending end equipment is a Road Side Unit (RSU) and the receiving end equipment is a terminal; or the sending terminal device is a terminal and the receiving terminal device is an RSU. In this application, the sending end device and the receiving end device may use a PC5 interface to implement direct side link communication, which is not limited specifically.
In this application, a terminal may also be referred to as a terminal device, a User Equipment (UE), an access terminal device, a Mobile Station (MS), a Mobile Terminal (MT), a UE unit, a UE station, a mobile device, a UE terminal device, a wireless communication device, a machine terminal, a UE agent, a UE apparatus, or the like. In the present application, the terminal is particularly a device capable of sidelink communication, such as a vehicle-mounted terminal, a terminal in unmanned driving (self driving), a terminal in auxiliary driving, or a handheld terminal capable of V2X communication, a mobile phone, and the like. The terminal of the present application may be an on-board module, an on-board component, an on-board chip, or an on-board unit built into a vehicle as one or more components or units.
In the present application, V2X communication refers to communication between a vehicle and anything outside, including vehicle to vehicle (V2V), vehicle to pedestrian (V2P), vehicle to infrastructure (V2I), and vehicle to network (V2N).
The LTE V2X communication may support communication scenarios with and without network coverage, and the resource allocation manner may adopt a network access device scheduling mode, such as an evolved universal terrestrial radio access network Node B (E-UTRAN Node B, eNB) scheduling mode and a UE self-selection mode. Based on the V2X technology, a vehicle user (V-UE) can send some information of itself, such as position, speed, intention (e.g. turning, merging, backing) and some non-periodic event-triggered information to surrounding V-UEs, and the V-UEs also receive the information of the surrounding users in real time.
For ease of understanding, the words referred to in this application will first be described.
Resource pool: as will be understood with reference to fig. 2, in sidelink, a plurality of time slots 201 and a set of frequency resources 202 which can be used for transmitting data in the system form a resource pool, and the plurality of time slots 201 may be continuous time slots or discontinuous time slots. The plurality of time slots may be a limited number of time slots or may be time slots that are repeated in a certain manner.
Time domain resource set: a set of multiple time slots in a resource pool that can be used to transmit data. The time slots in the time domain resource set may be contiguous or non-contiguous in the resource pool. Alternatively, the set of time domain resources may be a subset of a pool of resources. For example, the set of time domain resources is a candidate set of resources for which the terminal selects resources. Or, optionally, the time domain resource set is a set of all timeslots in the resource pool, i.e. the time domain resource set may be equal to the resource pool.
The random determination or the equiprobable determination used in the present invention means that a specific position is determined in a set in a random manner with the same probability value. For example, there are 10 slots, and randomly determining one slot among the 10 slots means that one slot is selected with the same probability value (e.g., 0.1) among the 10 slots. That is, the probability of the 10 slots being selected is the same, and it is random to select which slot. When there is a specified probability value, it is generated with the corresponding specified probability value.
Referring to fig. 3, in an embodiment of the present application, a data transmission method is provided, where an execution main body of the method is a sending end device, or an execution main body of the method may be a processor, a chip, or a chip system in the sending end device. If the sending end device takes a terminal as an example, the execution main body of the method may be the terminal, or a processor, a chip, or a chip system in the terminal, and the execution main body of the method is described by taking the terminal as an example.
Step 301, the terminal obtains configuration information, where the configuration information includes first parameter information, and the first parameter information is used to determine the number of randomly selected first time slots.
When the terminal is within the coverage of the network equipment, the terminal acquires configuration information from the network equipment, wherein the configuration information is information indicated by signaling in a sidelink (sidelink) resource pool. When the terminal is out of the coverage range of the network equipment, the terminal acquires preconfigured information, wherein the preconfigured information is information indicated by signaling in a sidelink resource pool.
The first parameter information is parameter information for determining the randomly selected first time slot number, and it is understood that the randomly selected first time slot number can be directly or indirectly determined through the first parameter information. Specifically, the first number of time slots may be composed of consecutive time slots on the resource pool, or may be composed of discontinuous time slots on the resource pool. Alternatively, the time slot of the first number of time slots may comprise only one time slot on the resource pool.
In a first optional implementation manner, the first parameter information is indication information of the first number of time slots, and the indication information may directly indicate the first number of time slots. For example, the indication information is "2", and the first slot number is 2.
In a second optional implementation manner, the first parameter information is probability information, and the first slot number may be indirectly determined through the probability information. In an example of this second optional implementation, the probability information includes a first probability, where the first probability is a parameter configured by the network device, and the first probability is a probability of selecting a desired frequency domain resource from a plurality of frequency domain resources over a time slot.
The terminal determines a first probability (e.g. P) according to a first frequency domain resource quantity (e.g. N) required by the data to be transmitted and the first probability1"representative") and a second number of frequency domain resources over a time slot (as denoted by "R") determines the first number of time slots.
For example, according to the first frequency domain resource quantity (N) required by the data to be transmitted and the first probability (P)1) Determining selectable frequency domain resources (as denoted by "M"), where M is ceil (N/P)1) (or M ═ floor (N/P)1) Ceil means rounding up and floor means rounding down.
The first number of timeslots (as indicated by "K") is determined based on the selectable frequency domain resource (M) and a second number of frequency domain resources (R) over a timeslot, where K equals ceil (M/R) (or K equals floor (M/R)), and K is the first number of timeslots. M, N and K are integers. It can be understood that the terminal needs to select N frequency domain resources from M resources corresponding to K time slots for data transmission. The manner of selecting the N frequency domain resources may be determined in an equiprobable manner.
For example: r is 10, P is 0.1, N is 3, then M is 30, K is 3, i.e. the first number of timeslots is K is 3;
for another example: r is 10, P is 0.3, N is 3, M is 10, K is 1, i.e. the first number of timeslots is K1.
In this example, the number of the first time slots for random resource selection is determined by the size of the data to be transmitted, the first probability, and the second frequency domain resource number on one time slot, taking into account the size of the data to be transmitted.
In an example of this second optional implementation manner, the probability information includes a second probability, where the second probability is: probability of randomly selecting a time slot within the set of time domain resources based on the second probability (e.g., with "P2"representative") and the number of time slots contained in the set of time domain resources (as denoted by "m"). First time slot number m × P2. For example, the second probability is 0.1, the number of time slots included in the time domain resource set is 10, and the number of first time slots is 1. P2It can also be understood that only P is on the current slot2Is also equivalent to the terminal being in floor (1/P)2) Or ceil (1/P)2) One transmission resource is selected with equal probability over a time slot. If P is 0.1, it is also equivalent to that the terminal determines the transmission resource from one time slot with equal probability in consecutive 10 time slots.
Optionally, the first parameter information includes indication information of the number of first time slots and probability information, the terminal may determine the number of one first time slot according to the probability information, and the indication information may indicate the number of another first time slot, where the two first time slots may be the same or different in number. If the two first time slot numbers are different in size, the terminal may determine which first time slot number to select according to the current service. I.e. whether a larger number of slots or a smaller number of slots is selected. Or a larger (or smaller) first number of slots may be preset for selection. Alternatively, the terminal may determine the number of first time slots according to the indication information and the probability information of the first time slots. The probability information is a third probability that a time slot is selected from the number of time slots indicated by the indication information. For example, if the number of slots indicated by the indication information is 20 and the third probability is 0.5, the first number of slots is 20 × 0.5 — 10, and the first number of slots is 10.
In another optional embodiment, the first parameter information includes indication information of the first slot number and probability information. And the terminal directly determines the number of the first time slots according to the indication information. And the terminal determines the first time slot in the time domain resource set according to the number of the first time slots and the probability information. For example, the indication information indicates that the number of first time slots is 20, and the third probability is 0.3. The terminal selects the first time slot to be transmitted out of the 20 first time slots with a probability of 0.3. The selection may be any one of 20 slots. Alternatively, the first time slot selected with the probability of 0.3 among the 20 time slots may be the first time slot. For example, the probability of selecting the first slot at 20 slots is 0.3 and the probability of non-selection is 0.7. In the first 2 time slots, the probability of selecting one time slot is 0.6, the probability of selecting in the first 3 time slots is 0.9, and the probability of selecting in the first 4 time slots is 1.2. When the terminal device selects a first time slot, further selection can be stopped, and the transmission data is transmitted according to the selected first time slot.
And step 302, the terminal randomly selects a first time slot for sidelink transmission in the time domain resource set according to the number of the first time slots.
And the terminal randomly selects the time slots with the first time slot number in the time domain resource set, the time slots with the first time slot number can be used as candidate resources, and then randomly determines the first time slots in the time slots with the first time slot number. The manner of random determination may be determined in an equiprobable manner. For example, the time domain resource set includes 10 time slots, the number of the first time slot is 2, the terminal randomly selects 2 time slots within the 10 time slots as candidate resources, for example, the candidate resources are the 2 nd time slot and the 5th time slot, and the 2 nd time slot is randomly selected as the first time slot in the 2 nd time slot and the 5th time slot. Alternatively, the terminal may determine the time slots of the first number of time slots from the beginning of the time domain resource set, or may determine the time slots of the first number of time slots from the middle or the end.
Optionally, in the time slot with the first time slot number, the terminal selects the first time slot for sidelink transmission from the first time slot number in an equal probability manner. The first time slot may be one time slot or a plurality of time slots, depending on the number of time slots actually needed for one-time transmission. And when the number of the first time slots is larger than the number of the first time slots in actual transmission, the terminal selects the first time slots in actual transmission in an equal probability mode in the number of the first time slots.
Here, the sidelink transmission refers to transmission or reception of data via a sidelink (sidelink).
Implementations of determining a set of time domain resources include at least:
in a first alternative implementation, the size of the time domain resource set may be determined by a preset parameter value, and the time slot resource set includes a preset number of time slots. For example, the preset number is x, the terminal determines a starting time slot available for transmitting data, and then starts from the starting time slot to the (x-1) th time slot to be a time domain resource set, if x is 10, starts from the starting time slot to the 9 th time slot to be the time domain resource set.
In a second alternative implementation, the size of the time domain resource set may be determined by the terminal when it is implemented. For example, when a terminal transmits a data packet to be transmitted from an upper layer (such as software, a protocol stack or an MAC layer) to a physical layer, the terminal determines the position and size of a time domain resource set according to factors such as a delay requirement of the data to be transmitted. Optionally, the starting slot position of the time domain resource set is after the data arrives, and the ending slot position does not exceed the last slot position allowed by the time delay remaining of the data packet to be transmitted.
In a third optional implementation manner, the configuration information further includes timeslot information, and the timeslot information includes: at least one of an end slot, a gap duration between the start slot and the end slot, or a second number of slots available for transmitting data.
The terminal may determine the set of time domain resources according to a starting timeslot and the timeslot information. For example, the timeslot information is exemplified by a second timeslot number, which is y, the terminal determines a starting timeslot available for data transmission, and then starts from the starting timeslot to the (y-1) th timeslot as a time domain resource set, and if y is 10, starts from the starting timeslot to the 9 th timeslot as the time domain resource set. For example, the timeslot information is an end timeslot, the end timeslot is a 9 th timeslot, and the terminal determines that the 9 th timeslot from the start timeslot to after the start timeslot is a time domain resource set. For example, the timeslot information is a duration, the duration is k time units, and a plurality of timeslots included in the k time units from the starting timeslot constitute a time domain resource set.
Optionally, the last time slot in the time domain resource set is located in a time slot corresponding to a delay margin allowed for transmitting the data to be transmitted, that is, the time domain resource set includes the allowed delay margin, and the first time slot randomly selected in the time domain resource set does not exceed the allowed delay, so as to ensure reliable transmission of the data.
Step 303, the terminal sends the data to be transmitted on the first time slot.
Referring to fig. 4, a terminal randomly selects one or more consecutive frequency domain resources 402 from a plurality of frequency domain resources on a first time slot 401 to transmit data to be transmitted. The unit of the frequency domain resource may be a subchannel or a resource block, and is not particularly limited.
In the embodiment of the application, the first time slot number and the time domain resource set determined by the first parameter information in the configuration information are used as constraints for the sending end device to select the time slot resources. The time domain resource set may or may not include resources reserved by the communication device of Rel-16, and the time domain resource set does not include resources reserved by the communication device of Rel-16, which may avoid the situation that the communication device of Rel-16 continuously preempts the same resources. If the time domain resource set includes 10 time slot resources and the number of the first time slots is 3, the sending end device may randomly select 3 time slots from the 10 time slots, and select the first time slot from the 3 time slots for transmitting data, and through the constraint of the number and/or position of the first time slot, the probability of collision between the selected resource and the reserved resource may be reduced, thereby improving the reliability of information transmission by the communication device in the system.
In an optional embodiment, in step 301, in a second optional implementation manner of the first parameter information, the probability information includes a plurality of probability values. Each of the plurality of probability values corresponds to a group of time slots. One slot group includes at least one slot. The terminal may determine the first number of time slots in a plurality of the groups of time slots within the set of time domain resources according to the plurality of probability values. Alternatively, the number of slot groups L may be 1 at the minimum. The first number of time slots is determined when it is 1, i.e. in a set of configured time slots. Optionally, the number of slots in each slot group may be 1, and when 1, there are L slots, and the L slots determine the first number of slots according to the corresponding configured probability value.
For example, the correspondence between the L slot groups and the probability values is shown in table 1 below:
TABLE 1
Time slot group A1 A2 … AL
Probability value P1 P2 … PL
The number of slots included in each group of slots may be the same or different, and the number of slots included in each group of slots is not particularly limited. The sum of the L groups of probability values is less than or equal to 1, and the L probability values can be the same or different. For example, the time domain resource set includes 40 slots, and for convenience of description, for example, the number of slots included in each slot group is the same, L is 4, each slot group includes 10 slots, and L probability values are the same and are all 0.1. The probability value may be the probability value of the second probability in step 301 above.
In the first example, the probability values are the same, the terminal randomly selects 1 slot as a candidate resource in 10 slots in the slot group a1, the terminal randomly selects 1 slot as a candidate resource in 10 slots in the slot group a2, and so on, selects L slots as candidate resources altogether, and then randomly selects the first slot among the L (the first slot number) candidate resources for transmitting data. In this example, the density of the random selection resources of the terminal may be controlled by dividing the time slot groups, for example, the time slots (candidate resources) available for selection are dispersed as much as possible, so as to reduce the probability of collision of the multiple terminal selection resources.
In a second example, the nth probability value of the plurality of probability values is less than the (n +1) th probability value, and the plurality of probability values are progressively greater. For example, P1-0.1, P2-0.2, P3-0.3, and P4-0.4. Alternatively, the nth probability value is greater than the (n +1) th probability value, with the probability values progressively decreasing. For example, P1-0.4, P2-0.3, P3-0.2, and P4-0.1. In this example, the congestion of the transmission can be reduced by configuring different probability values for different groups of time slots. For example, for a higher delay requirement, the probability value may be gradually decreased, so that the data with a higher delay requirement has more chances to select the timeslot resource in the timeslot group located earlier, and thus is transmitted preferentially. For the service data with low time delay requirement, the probability value can be gradually increased, so that the data with high time delay requirement has more chances to select the time slot resource in the time slot group with the later position, thereby reducing the probability of transmission congestion.
In an optional embodiment, in step 302, the probability information includes a plurality of probability values, which may be the probability value of the first probability or the probability value of the second probability. The configuration information includes the plurality of probability values and a plurality of quality of service (QoS) values corresponding to the plurality of probability values. The QoS value is a parameter value of at least one of a Channel Busy Ratio (CBR), a channel occupancy ratio (CR), and priority information, where the priority information is a priority of data to be sent or a configured priority threshold value. For example, the priority information may indicate upper values of configured priority ranges, which correspond to corresponding probability values.
In a first example, the QoS value is a parameter value of the priority information, the correspondence between the plurality of probability values and the priority parameter value is shown in the following table 2a, and the correspondence between the plurality of probability values and the plurality of priority thresholds is shown in the following table 2 b:
TABLE 2a
Priority level 0 1 2 3
Probability value P0 P2 P3 P4
TABLE 2b
Priority threshold ≤1 ≤3 ≤5 ≤7
Probability value P0 P2 P3 P4
When the same terminal sends data with different priorities, the used probability values are different. Alternatively, when different terminals transmit data of a specific priority, the probability value associated with the specific priority is used. Or, when different terminals transmit data with specific priority, determining the area corresponding to the priority threshold where the data are located according to the priority value of the data, and then determining the probability value corresponding to the area according to the priority threshold.
The terminal may determine that the first QoS value is 1, for example, according to the priority (first QoS value). Then, a first probability value (e.g., P2) corresponding to the first QoS value is determined according to the correspondence between the priority and the probability value (e.g., as shown in table 2, priority 0 is high priority, and priority 3 is low priority), and the terminal determines the first number of slots according to the first probability value. The probability value in this example is illustrated as a probability value of the first probability.
For example, the UE1 has a priority of 0 for transmitting data, and the UE2 has a priority of 3 for transmitting data, see table 2a above. A probability value of P0 corresponding to a priority of 0 (e.g., P0 ═ 0.3). The probability value with priority 3 is P3 (e.g., P4 ═ 0.1).
For example, the UE1 has a priority of 0 for transmitting data, and the UE2 has a priority of 3 for transmitting data, see table 2b above. A priority of 0 corresponds to a closest upper threshold of 1 and a corresponding probability value of P0 (e.g., P0 is 0.3). A priority of 3 corresponds to a closest upper threshold of 3, and a corresponding probability value of P2 (e.g., P2 is 0.1).
A first probability P that a first number N of frequency domain resources required for the UE1 to transmit data is 310.3, and the second frequency-domain resource number R is 10 in one time slot, then K is 1, it is understood that the UE1 can select the frequency-domain resource to be transmitted in one time slot in the time-domain resource set.
First frequency domain required for UE2 to transmit dataNumber of resources N is 3, first probability P10.1, and the second frequency domain resource number R in one timeslot is 10, then K is 3, it can be understood that the UE2 can select the frequency domain resource to be transmitted only in 3 timeslots in the time domain resource set.
In an alternative, the information indicating the number of first slots may indicate a plurality of values, the values directly indicate the number of slots, in this case, the values are the number of first slots, and the correspondence between the plurality of values and the priority parameter values is shown in table 3 below:
TABLE 3
Priority level 0 1 2 3
Numerical value 4 3 2 1
For example, the UE1 has a priority of 0 for transmitting data, and the UE2 has a priority of 3 for transmitting data, see table 3 above. A priority of 0 corresponds to a value of 4 (the first slot number is 4), and a priority of 3 corresponds to a value of 1 (the first slot number is 1).
The correspondence between the values and the priority thresholds is shown in table 4 below:
TABLE 4
Priority threshold ≤0 ≤1 ≤2 ≤3
Numerical value 4 3 2 1
For example, the priority of the UE1 for transmitting data is 0, and the priority of the UE2 for transmitting data is 3, see table 4 above. UE1 with priority 0 has an upper limit of 0 corresponding to the closest priority threshold value and a value of 4 (the first slot number is 4). The UE2 with priority 3 has an upper limit of 3 corresponding to the closest priority threshold value, and 3 has a value of 1 (the first slot number is 1).
The UE1 randomly selects 4 time slots in the time domain resource set, then randomly selects one time slot (a first time slot) among the 4 time slots, and selects frequency domain resources on the first time slot.
The UE2 randomly selects 1 time slot in the time domain resource set, and selects the frequency domain resource on that time slot (i.e., the first time slot).
In this example, different priorities are configured to correspond to different probability values (or the number of time slots), so that the potential conflict condition with the resource selection of the R16 communication device is reduced, and it is further ensured that there are still more opportunities for preferentially sending high-priority traffic, the opportunity for sending emergency messages is improved, and the transmission delay is reduced.
In a second example, the QoS value is a parameter value of CBR or a parameter value of CR. In this example, a parameter value with a CBR as a QoS value is described as an example.
In this example, the probability information includes a plurality of probability values, and the configuration information includes a plurality of probability values and a plurality of CBR preset ranges corresponding to the plurality of probability values. The corresponding relationship between the probability values and the CBR preset ranges is shown in table 5 below:
TABLE 5
Predetermined range of CBR (0,0.3] (0.3,0.4] (0.4,0.5] (0.5,0.6]
Probability value P1 P2 P3 P4
It should be noted that table 5 is only an exemplary illustration of the CBR preset range for convenience of description, and is not a limitation.
The terminal acquires a CBR measurement value, which may be measured by the terminal, or may be measured by other devices, and sends the measurement value to the terminal, or the measurement value may be indicated by the base station, and a method for acquiring the measurement value is not limited. Alternatively, the measured value of CBR may be a value measured on a portion of resources on the resource pool.
And determining a second probability value corresponding to a first CBR preset range, wherein the first CBR preset range belongs to the plurality of CBR preset ranges, the second probability value is contained in the plurality of probability values, and the second probability value is used for determining the number of the first time slots.
For example, each CBR preset range corresponds to two thresholds, the CBR measurement value is compared with the threshold corresponding to each preset range, if the CBR measurement value is greater than the first threshold and is less than or equal to the second threshold, it is determined that the CBR measurement value belongs to the first CBR preset range corresponding to the first threshold (e.g., 0) and the second threshold (e.g., 0.3), and the probability value associated with the first CBR preset range is determined to be P1 according to the corresponding relationship between the first CBR preset range and the probability value.
Taking the probability value of the second probability as an example, if the P1 corresponding to the first CBR preset range is 0.2, and the time domain resource set includes 10 time slots, then 2 time slots are selected from the 10 time slots as candidate resources, and the first time slot is selected from the 2 time slots. In an alternative, the information indicative of the first number of slots may indicate a plurality of values, as shown in table 6.
TABLE 6
Predetermined range of CBR (0,0.3] (0.3,0.4] (0.4,0.5] (0.5,0.6]
Numerical value 4 8 16 20
The value directly indicates the number of slots. In this case, the value is the first number of slots. The CBR preset ranges correspond to the numerical values. The CBR measurement falls within a first predetermined CBR range, and a value (e.g., 2) corresponding to the first predetermined CBR range is determined, which is the first number of timeslots. If the time domain resource set includes 10 slots, 2 slots are selected from the 10 slots as candidate resources. The first time slot may then be selected from the 2 time slots. In this example, different CBR preset ranges may correspond to different probability values (or numbers of time slots), the terminal obtains a measured value of the CBR (or CR), if the measured value belongs to the first CBR preset range, it is determined that the first CBR preset range corresponds to the first probability value, the candidate resource of the first time slot number is determined by the first probability value, and by the constraint of the first time slot number (candidate resource), the potential conflict with the reserved resource of the R16 communication device is reduced, thereby further ensuring that the opportunity of sending the emergency message is improved under a certain interference condition.
In an optional embodiment, the first parameter information includes a data initial transmission parameter value and a data retransmission parameter value. The data initial transmission parameter value and the data retransmission parameter value may be probability values. Alternatively, the data initial transmission parameter value and the data retransmission parameter value may be one value. This value may directly indicate the first number of slots. The initial transmission parameter value is an initial transmission quantity value, and the retransmission parameter value is a retransmission quantity value. In this example, the initial transmission value is an example of an initial transmission probability value, and the retransmission parameter value is an example of a retransmission probability value.
In step 302, the method for randomly selecting a first time slot for sidelink transmission within a set of time domain resources according to the first number of time slots further comprises:
and judging whether the data to be transmitted is initial transmission data or retransmission data. If the serial number of the data to be transmitted is stored in the retransmission cache or the retransmission request of the data corresponding to the serial number is received, the data to be transmitted is judged to be the retransmission data. And if the serial number of the data to be transmitted is not stored in the retransmission cache or the retransmission request of the data corresponding to the serial number is not received, judging the data to be transmitted as the initial transmission data. It should be noted that the manner of determining whether the data to be transmitted is retransmission data or initial transmission data is merely an example, and is not limited.
And if the data to be transmitted is retransmission data, randomly selecting a first time slot for side row transmission in a time domain resource set according to the first time slot number determined by the data retransmission parameter value.
And if the data to be transmitted is initial transmission data, randomly selecting a first time slot for side transmission in a time domain resource set according to the first time slot number determined by the initial data transmission parameter value.
The retransmission parameter value and the initial transmission parameter value take probability values as examples, the initial transmission parameter value is an initial transmission probability value, and the retransmission parameter value is a retransmission probability value. The retransmission parameter value may be greater than the initial transmission parameter value, and the retransmission probability value may be directly indicated in the configuration information, for example, the retransmission probability value is 0.3 and the initial transmission probability value is 0.2.
The probability value is the probability value of the second probability as an example, and the terminal determines the number of the first time slots according to the retransmission probability value and the number contained in the time domain resource set. Or the terminal determines the number of the first time slots according to the initial transmission probability value and the number contained in the time domain resource set.
Optionally, this example may also be combined with the above-described optional embodiments to determine the retransmission probability value or the initial transmission probability value.
In a first example, the terminal may determine the retransmission probability value or the initial transmission probability value according to the priority of the data to be transmitted. The corresponding relationships between the retransmission probability values and the priority parameter values, and between the initial transmission probability values and the priority parameter values are shown in the following table 7:
TABLE 7
Priority level 0 1 2 3
Retransmission probability value P1 P2 P3 P4
Probability value of initial transmission P5 P6 P7 P8
The terminal may determine a first priority of data to be transmitted, and determine the data to be transmitted as retransmission data. For example, the first priority is 1, and then a first retransmission probability value (e.g., P2) corresponding to the first priority is determined according to the correspondence between the priority and the probability value (as shown in table 7). And the terminal determines the number of the first time slots according to the first retransmission probability value.
The terminal determines the number of the first time slots according to the first retransmission probability value in the following two ways:
the first retransmission probability value is taken as the probability value of the first probability, that is, the terminal needs the first frequency domain resource number N and the first retransmission probability value (the first probability "P") according to the data to be transmitted1") and a second number of frequency domain resources (R) over a time slot determines the first number of time slots.
Using the first retransmission probability value as the probability value of the second probability, and according to the first retransmission probability value (second probability' P)2") and the number of time slots contained in the set of time domain resources determines the first number of time slots.
The terminal can determine a first priority of data to be transmitted, and the data to be transmitted is initially transmitted data. For example, the first priority is 1, and then a first initial transmission probability value (e.g., P5) corresponding to the first priority is determined according to the correspondence between the priority and the probability value (as shown in table 7), and the terminal determines the number of the first time slots according to the first initial transmission probability value. The terminal determines the number of the first time slots according to the first initial transmission probability value in two ways: and the first initial probability value is the probability value of the second probability so as to determine the number of the first time slots. Or the first initial probability value is the probability value of the first probability so as to determine the number of the first time slots.
The corresponding relationship between the retransmission probability values and the priority thresholds and the corresponding relationship between the initial transmission probability values and the priority thresholds are shown in the following table 8:
TABLE 8
Priority threshold ≤1 ≤3 ≤5 ≤7
Retransmission probability value P1 P2 P3 P4
Probability value of initial transmission P5 P6 P7 P8
For example, the priority of the UE1 for transmitting data is 0, and the priority of the UE2 for transmitting data is 3, see table 8 above. The UE1 with priority 0 has an upper limit of the threshold value corresponding to the closest priority of 1, and if the data to be transmitted is the retransmitted data, the retransmission probability value corresponding to "1" is P1 (for example, P1 is 0.3). If the data to be transmitted is the initial transmission data, the initial transmission probability value corresponding to "1" is P5 (for example, P5 is 0.2). And the terminal determines the number of the first time slots according to the retransmission probability value or the initial transmission probability value.
Optionally, the data initial transmission parameter value and the data retransmission parameter value may also be a value, and the value is used to indicate the first time slot number. The initial transmission parameter value is an initial transmission quantity value, and the retransmission parameter value is a retransmission quantity value.
The corresponding relationship between the retransmission number values and the priority parameter values and the corresponding relationship between the initial transmission number values and the priority parameter values are shown in the following table 9:
TABLE 9
Priority level 0 1 2 3
Retransmission number value 5 4 3 2
Initial transmission numerical value 4 3 2 1
For example, the terminal determines a first priority (e.g., 0) of the data to be transmitted, and the data to be transmitted is retransmission data. The terminal determines a first retransmission number value (e.g., 5) corresponding to the first priority according to the correspondence between the priority and the retransmission number value (as shown in table 9). The terminal determines that the first slot number is 5.
The terminal determines a first priority (for example, 0) of data to be transmitted, and the data to be transmitted is initially transmitted data. And the terminal determines a first initial transmission probability value (such as 4) corresponding to the first priority according to the corresponding relation between the priority and the initial transmission number value. The terminal determines that the first slot number is 4.
The corresponding relationship between the retransmission number values and the priority threshold, and between the initial transmission number values and the priority threshold is shown in the following table 10:
watch 10
Priority level ≤1 ≤3 ≤5 ≤7
Retransmission number value 5 4 3 2
Initial transmission numerical value 4 3 2 1
For example, the priority of the UE1 for transmitting data is 0, and the priority of the UE2 for transmitting data is 2, see table 10 above. A priority of 0 corresponds to a closest upper threshold of 1. If the data to be transmitted is retransmission data, the retransmission number value corresponding to "1" is 5. The terminal determines that the first slot number is 5.
If the data to be transmitted is the initial transmission data, the initial transmission quantity value corresponding to the '1' is 4. And the terminal determines the number of the first time slots according to the retransmission probability value or the initial transmission probability value. The terminal determines that the first slot number is 4.
In this example, the first-transmitted data and the retransmitted data correspond to different probability values (or values), and the probability value of the retransmitted data is configured to be greater than the probability value of the first-transmitted data according to different requirements of the service, so that there are more opportunities to transmit the retransmitted data. Further, different priority information corresponds to different retransmission probability values (or initial transmission probability values). Different priority information corresponds to different retransmission count values (or initial transmission count values). Further, it is ensured that the high-priority service still has more opportunities to be sent preferentially, thereby improving the opportunity of sending the emergency message and reducing the transmission delay.
In a second example, the terminal may determine a retransmission probability value or an initial transmission probability value according to the CBR (or CR) value. The configuration information comprises a plurality of CBR preset ranges and a plurality of retransmission probability values corresponding to the CBR preset ranges, and a plurality of CBR preset ranges and a plurality of initial transmission probability values corresponding to the CBR preset ranges. The correspondence between the retransmission probability values (initial transmission probability values) and the CBR preset ranges is shown in the following table 11:
TABLE 11
Predetermined range of CBR (0,0.3] (0.3,0.4] (0.4,0.5] (0.5,0.6]
Retransmission probability value P1 P2 P3 P4
Probability value of initial transmission P5 P6 P7 P8
And the terminal acquires the CBR measured value. If the CBR measurement value falls within the first CBR predetermined range (0, 0.3) and the data to be transmitted is retransmitted data, the terminal determines a second retransmission probability value (e.g., P1) corresponding to the first CBR predetermined range, where the first CBR predetermined range falls within a plurality of CBR predetermined ranges, and the second retransmission probability value (e.g., P1) is used to determine the first number of time slots.
If the data to be transmitted is initial transmission data, the terminal determines a second initial transmission probability value (such as P5) corresponding to the first CBR preset range, and the second initial transmission probability value is used for determining the number of the first time slots.
Alternatively, the terminal may determine the retransmission count value or the initial transmission count value according to the CBR (or CR) value. The configuration information includes a plurality of CBR default ranges and a plurality of retransmission count values corresponding thereto, and a plurality of CBR default ranges and a plurality of initial transmission count values corresponding thereto. The correspondence between the retransmission count values (initial transmission count values) and the CBR predetermined ranges is shown in table 12 below:
TABLE 12
Predetermined range of CBR (0,0.3] (0.3,0.4] (0.4,0.5] (0.5,0.6]
Retransmission number value 4 8 16 20
Initial transmission numerical value 2 6 12 18
And the terminal acquires the CBR measured value. If the CBR measurement value falls within the first CBR predetermined range (e.g., (0, 0.3)) and the data to be transmitted is retransmitted, see table 12, the terminal determines a second retransmission number value (e.g., 4) corresponding to the first CBR predetermined range, the terminal determines the first number of slots to be 4, the first CBR predetermined range falls within the plurality of CBR predetermined ranges (e.g., (0, 0.3)) and the data to be transmitted is initially transmitted, the terminal determines the first number of slots to be 2.
In this example, the first-transmitted data and the retransmitted data correspond to different probability values (or values), and the probability value of the retransmitted data is configured to be greater than the probability value of the first-transmitted data according to different requirements of the service, so that there are more opportunities to transmit the retransmitted data. Further, different CBR preset ranges may correspond to different retransmission probability values and initial transmission probability values. Alternatively, different CBR predetermined ranges may correspond to different retransmission count values and initial transmission count values. The terminal acquires a measured value of the CBR (or CR), if the measured value belongs to a first CBR preset range, the first CBR preset range corresponds to a second retransmission probability value (or a second initial transmission probability value), and the number of the first time slots is determined according to the second retransmission probability value (or the second initial transmission probability value). Or, the first CBR preset range corresponds to a second retransmission number value (or a second initial transmission number value), and the second retransmission number value (or a second initial transmission probability value) is the first time slot number. Through the restriction of the first number of time slot candidate resources, the potential conflict of the reserved resources with the R16 communication device is reduced, and the opportunity of sending the emergency message is further ensured to be improved under certain interference conditions.
Corresponding to the method provided by the above method embodiment, the embodiment of the present application further provides a corresponding apparatus, which includes a module for executing the above embodiment. The module may be software, hardware, or a combination of software and hardware.
Fig. 5 shows a schematic structural diagram of a communication device. The apparatus 500 may be a network device, a terminal device, a drive test unit, a chip system, a processor, or the like, which supports the network device to implement the method, or a chip, a chip system, a processor, or the like, which supports the terminal device to implement the method. The apparatus may be configured to implement the method described in the method embodiment, and refer to the description in the method embodiment.
The apparatus 500 may comprise one or more processors 501, where the processors 501 may also be referred to as processing units and may implement certain control functions. The processor 501 may be a general purpose processor or a special purpose processor, etc. For example, a baseband processor or a central processor. The baseband processor may be configured to process communication protocols and communication data, and the central processor may be configured to control a communication device (e.g., a base station, a baseband chip, a terminal chip, a DU or CU, etc.), execute a software program, and process data of the software program.
In an alternative design, the processor 501 may also store instructions and/or data 503, and the instructions and/or data 503 may be executed by the processor, so that the apparatus 500 performs the method described in the above method embodiment.
In an alternative design, processor 501 may include a transceiver unit to perform receive and transmit functions. The transceiving unit may be, for example, a transceiving circuit, or an interface circuit. The transmit and receive circuitry, interfaces or interface circuitry used to implement the receive and transmit functions may be separate or integrated. The transceiver circuit, the interface circuit or the interface circuit may be used for reading and writing code/data, or the transceiver circuit, the interface circuit or the interface circuit may be used for transmitting or transferring signals.
In yet another possible design, the apparatus 500 may include circuitry that may implement the functionality of transmitting or receiving or communicating in the foregoing method embodiments.
Optionally, the apparatus 500 may include one or more memories 502, on which instructions 504 may be stored, and the instructions may be executed on the processor, so that the apparatus 500 performs the methods described in the above method embodiments. Optionally, the memory may further store data therein. Optionally, instructions and/or data may also be stored in the processor. The processor and the memory may be provided separately or may be integrated together. For example, the correspondence described in the above method embodiments may be stored in a memory or in a processor.
Optionally, the apparatus 500 may further comprise a transceiver 505 and/or an antenna 506. The processor 501, which may be referred to as a processing unit, controls the apparatus 500. The transceiver 505 may be referred to as a transceiver unit, a transceiver circuit, a transceiver device, a transceiver module, etc. for implementing a transceiving function.
Optionally, the apparatus 500 in the embodiment of the present application may be configured to execute the method described in fig. 3 in the embodiment of the present application, and may also be configured to execute a method of various implementation manners corresponding to the embodiment of the method corresponding to fig. 3 and a method of combining various implementation manners.
As shown in fig. 6, another embodiment of the present application provides a communication device 600. The device may be a terminal or a component of a terminal (e.g., an integrated circuit, a chip, etc.). Alternatively, the apparatus may be a network device, or a component of a network device (e.g., an integrated circuit, a chip, etc.). The apparatus may also be another communication module, which is used to implement the method in the embodiment of the method of the present application. The apparatus 600 may include: the transceiver module 602 (or called transceiver unit). Optionally, the system may further include a processing module 601 (or referred to as a processing unit) and a storage module 603 (or referred to as a storage unit).
In one possible design, one or more of the modules in FIG. 6 may be implemented by one or more processors or by one or more processors and memory; or by one or more processors and transceivers; or by one or more processors, memories, and transceivers, which are not limited in this application. The processor, the memory and the transceiver can be arranged independently or integrated.
Optionally, each module in the apparatus 600 in the embodiment of the present application may be configured to execute the method described in fig. 3 in the embodiment of the present application, and may also be configured to execute a method of various implementation manners corresponding to the embodiment of the method corresponding to fig. 3 and a method of combining various implementation manners.
In one possible design, a communications apparatus 600 may include: a processing module 601 and a transceiver module 602.
A transceiver module 602, configured to obtain configuration information, where the configuration information includes first parameter information, and the first parameter information is used to determine a randomly selected first slot number;
a processing module 601, configured to randomly select a first time slot for sideline transmission in a time domain resource set according to the number of the first time slots obtained by the transceiver module 602;
a transceiver module 602, configured to send data to be transmitted on the first timeslot.
Optionally, the first parameter information includes probability information and/or indication information of the first time slot number.
Optionally, the processing module 601 is further configured to: randomly selecting a time slot of the first number of time slots within the set of time domain resources; determining the first time slot among the first number of time slots.
Optionally, the configuration information further includes time slot information, where the time slot information is used to determine the time domain resource set;
the processing module 601 is further configured to: determining the time domain resource set according to a starting time slot and the time slot information, wherein the starting time slot is a first time slot which can be used for data transmission; randomly selecting a time slot of the first number of time slots within the set of time domain resources; determining the first time slot among the first number of time slots.
Optionally, the timeslot information includes at least one of an end timeslot available for data transmission, an interval duration between the start timeslot and the end timeslot, or a second timeslot number.
Optionally, the probability information includes a first probability; the processing module 601 is further configured to determine the number of time slots according to the first frequency domain resource number, the first probability, and the second frequency domain resource number on one time slot, which are required by the data to be transmitted.
Optionally, the probability information includes a plurality of probability values, each of the probability values corresponds to a timeslot group, and the timeslot group includes at least one timeslot; the processing module 601 is further configured to determine the first number of time slots in the plurality of time slot groups in the time domain resource set according to the plurality of probability values.
Optionally, an nth probability value of the plurality of probability values is less than or equal to an (n +1) th probability value, or the nth probability value is greater than or equal to the (n +1) th probability value.
Optionally, the probability information includes a plurality of probability values, and the configuration information includes: a plurality of the probability values and a plurality of QoS values corresponding to the plurality of probability values.
Optionally, the processing module 601 is further configured to: determining a first QoS value, the first QoS value belonging to the plurality of QoS values; determining a first probability value corresponding to the first QoS according to the first QoS value, the first probability value belonging to the probability values, the first probability value being used for determining the first number of time slots.
Optionally, the QoS value is a parameter value of at least one of a channel busy ratio CBR, a channel occupied ratio CR, and priority information.
Optionally, the Qos values are: a plurality of thresholds corresponding to the plurality of CBR preset ranges; the processing module 601 is further configured to: obtaining a CBR measurement value; and determining a second probability value corresponding to the first CBR preset range, wherein the second probability value is contained in the plurality of probability values, and the second probability value is used for determining the number of the first time slots.
Optionally, the first parameter information includes a data initial transmission parameter value and a data retransmission parameter value; the processing module 601 is further configured to: the data to be transmitted is initial transmission data, and a first time slot for side transmission is randomly selected in a time domain resource set according to the first time slot number determined by the initial data transmission parameter value; or, the data to be transmitted is retransmission data, and a first time slot for side row transmission is randomly selected in a time domain resource set according to the first time slot number determined by the data retransmission parameter value.
Optionally, the last time slot in the time domain resource set is located in a time slot corresponding to a delay margin allowed for transmitting the data to be transmitted.
Optionally, the configuration information is indicated by signaling in the sidelink resource pool.
It is understood that some optional features in the embodiments of the present application may be implemented independently without depending on other features in some scenarios, such as a currently-based solution, to solve corresponding technical problems and achieve corresponding effects, or may be combined with other features according to requirements in some scenarios. Accordingly, the apparatuses provided in the embodiments of the present application may also implement these features or functions, which are not described herein again.
It is understood that the processor in the embodiments of the present application may be an integrated circuit chip having signal processing capability. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The processor may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, or discrete hardware components.
The approaches described herein may be implemented in a variety of ways. For example, these techniques may be implemented in hardware, software, or a combination of hardware and software. For a hardware implementation, the processing units used to perform these techniques at a communication device (e.g., a base station, terminal, network entity, or chip) may be implemented in one or more general-purpose processors, DSPs, digital signal processing devices, ASICs, programmable logic devices, FPGAs, or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combinations of the above. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.
It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM, enhanced SDRAM, SLDRAM, Synchronous Link DRAM (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
The present application also provides a computer-readable medium having stored thereon a computer program which, when executed by a computer, performs the functions of any of the method embodiments described above.
The present application also provides a computer program product which, when executed by a computer, implements the functionality of any of the above-described method embodiments.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.
It should be understood that, in the present application, "when …", "if" and "if" all refer to the fact that the device performs the corresponding processing under certain objective conditions, and are not limited to time, and do not require any judgment action for the device to perform, nor do they imply other limitations.
Reference in the present application to an element using the singular is intended to mean "one or more" rather than "one and only one" unless specifically stated otherwise. In the present application, unless otherwise specified, "at least one" is intended to mean "one or more" and "a plurality" is intended to mean "two or more".
Herein, the term "at least one of … …" or "at least one of … …" means all or any combination of the listed items, e.g., "at least one of A, B and C", may mean: the compound comprises six cases of separately existing A, separately existing B, separately existing C, simultaneously existing A and B, simultaneously existing B and C, and simultaneously existing A, B and C, wherein A can be singular or plural, B can be singular or plural, and C can be singular or plural.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The same or similar parts between the various embodiments in this application may be referred to each other. In the embodiments and the implementation methods/implementation methods in the embodiments in the present application, unless otherwise specified or conflicting in logic, terms and/or descriptions between different embodiments and between various implementation methods/implementation methods in various embodiments have consistency and can be mutually cited, and technical features in different embodiments and various implementation methods/implementation methods in various embodiments can be combined to form new embodiments, implementation methods, or implementation methods according to the inherent logic relationships thereof. The above-described embodiments of the present application do not limit the scope of the present application.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application.

Claims (33)

1. A data transmission method is applied to sending terminal equipment and comprises the following steps:
acquiring configuration information, wherein the configuration information comprises first parameter information, and the first parameter information is used for determining the number of randomly selected first time slots;
randomly selecting a first time slot for side row transmission in a time domain resource set according to the number of the first time slots;
and sending data to be transmitted on the first time slot.
2. The method according to claim 1, wherein the first parameter information comprises probability information and/or information indicative of the first number of time slots.
3. The method of claim 1, wherein randomly selecting a first time slot for sidelink transmission within a set of time domain resources according to the first number of time slots comprises:
randomly selecting a time slot of the first number of time slots within the set of time domain resources;
determining the first time slot among the first number of time slots.
4. The method of claim 1, wherein the configuration information further comprises time slot information, and wherein the time slot information is used for determining the set of time domain resources;
the randomly selecting a first time slot for sidelink transmission within a set of time domain resources according to the first number of time slots comprises:
determining the time domain resource set according to a starting time slot and the time slot information, wherein the starting time slot is a first time slot which can be used for data transmission;
randomly selecting a time slot of the first number of time slots within the set of time domain resources;
determining the first time slot among the first number of time slots.
5. The method of claim 4, wherein the slot information comprises at least one of an end slot available for transmitting data, a gap duration between the start slot and the end slot, or a second number of slots.
6. The method of claim 2, wherein the probability information comprises a first probability;
and determining the time slot number according to the first frequency domain resource number, the first probability and the second frequency domain resource number on one time slot required by the data to be transmitted.
7. The method of claim 2, wherein the probability information comprises a plurality of probability values, each of the plurality of probability values corresponding to a group of slots, the group of slots comprising at least one slot;
the method further comprises the following steps:
determining the first number of time slots in the plurality of time slot groups within the set of time domain resources according to the plurality of probability values.
8. The method of claim 7, wherein an nth probability value of the plurality of probability values is less than or equal to an (n +1) th probability value, or wherein the nth probability value is greater than or equal to the (n +1) th probability value.
9. The method of claim 2, wherein the probability information comprises a plurality of probability values for determining the first number of time slots, and wherein the configuration information comprises:
a plurality of the probability values and a plurality of QoS values corresponding to the plurality of probability values.
10. The method of claim 9, further comprising:
determining a first QoS value, the first QoS value belonging to the plurality of QoS values;
determining a first probability value corresponding to the first QoS according to the first QoS value, the first probability value belonging to the probability values, the first probability value being used for determining the first number of time slots.
11. The method of claim 9 or 10, wherein the QoS value is a parameter value of at least one of a channel busy ratio CBR, a channel occupied ratio CR and priority information.
12. The method of claim 9, wherein the plurality of Qos values are: a plurality of thresholds corresponding to a plurality of CBR preset ranges, the method further comprising:
obtaining a CBR measurement value;
and determining a second probability value corresponding to the first CBR preset range, wherein the second probability value is contained in the plurality of probability values, and the second probability value is used for determining the number of the first time slots.
13. The method according to any one of claims 1-8, wherein the first parameter information comprises a data initial transmission parameter value and a data retransmission parameter value;
the randomly selecting a first time slot for sidelink transmission within a set of time domain resources according to the first number of time slots comprises:
the data to be transmitted is initial transmission data, and a first time slot for side transmission is randomly selected in a time domain resource set according to the first time slot number determined by the initial data transmission parameter value;
or the like, or, alternatively,
and the data to be transmitted is retransmission data, and a first time slot for side row transmission is randomly selected in a time domain resource set according to the first time slot number determined by the data retransmission parameter value.
14. The method according to any of claims 1-13, wherein a last time slot in the time domain resource set is located within a time slot corresponding to a delay margin allowed for transmitting the data to be transmitted.
15. The method according to any of claims 1-14, wherein the configuration information is indicated by signaling in a sidelink resource pool.
16. A communications apparatus, comprising:
a transceiver module, configured to acquire configuration information, where the configuration information includes first parameter information, and the first parameter information is used to determine a randomly selected first slot number;
the processing module is used for randomly selecting a first time slot for side row transmission in a time domain resource set according to the number of the first time slots acquired by the transceiver module;
the transceiver module is further configured to send data to be transmitted on the first time slot.
17. The apparatus according to claim 16, wherein the first parameter information comprises probability information and/or information indicative of the first number of time slots.
18. The apparatus of claim 16, wherein the processing module is further configured to:
randomly selecting a time slot of the first number of time slots within the set of time domain resources;
determining the first time slot among the first number of time slots.
19. The apparatus of claim 16, wherein the configuration information further comprises time slot information, and wherein the time slot information is used for determining the set of time domain resources;
the processing module is further configured to:
determining the time domain resource set according to a starting time slot and the time slot information, wherein the starting time slot is a first time slot which can be used for data transmission;
randomly selecting a time slot of the first number of time slots within the set of time domain resources;
determining the first time slot among the first number of time slots.
20. The apparatus of claim 19, wherein the slot information comprises at least one of an end slot available for transmitting data, a gap duration between the start slot and the end slot, or a second number of slots.
21. The apparatus of claim 17, wherein the probability information comprises a first probability;
the processing module is further configured to determine the number of time slots according to a first frequency domain resource number required by the data to be transmitted, the first probability, and a second frequency domain resource number on one time slot.
22. The apparatus of claim 17, wherein the probability information comprises a plurality of probability values, each of the plurality of probability values corresponding to a group of slots, the group of slots comprising at least one slot;
the processing module is further configured to determine the first number of time slots in the plurality of time slot groups in the time domain resource set according to the plurality of probability values.
23. The apparatus of claim 22, wherein an nth probability value of the plurality of probability values is less than or equal to an (n +1) th probability value, or wherein the nth probability value is greater than or equal to the (n +1) th probability value.
24. The apparatus of claim 17, wherein the probability information comprises a plurality of probability values, and wherein the configuration information comprises: a plurality of the probability values and a plurality of QoS values corresponding to the plurality of probability values.
25. The apparatus of claim 24, wherein the processing module is further configured to:
determining a first QoS value, the first QoS value belonging to the plurality of QoS values;
determining a first probability value corresponding to the first QoS according to the first QoS value, the first probability value belonging to the probability values, the first probability value being used for determining the first number of time slots.
26. The apparatus of claim 24 or 25, wherein the QoS value is a parameter value of at least one of a channel busy ratio CBR, a channel occupied ratio CR and priority information.
27. The apparatus of claim 24, wherein the plurality of Qos values are: a plurality of thresholds corresponding to the plurality of CBR preset ranges;
the processing module is further configured to:
obtaining a CBR measurement value;
and determining a second probability value corresponding to the first CBR preset range, wherein the second probability value is contained in the plurality of probability values, and the second probability value is used for determining the number of the first time slots.
28. The apparatus according to any of claims 16-23, wherein the first parameter information comprises a data initial transmission parameter value and a data retransmission parameter value;
the processing module is further configured to:
the data to be transmitted is initial transmission data, and a first time slot for side transmission is randomly selected in a time domain resource set according to the first time slot number determined by the initial data transmission parameter value;
or the like, or, alternatively,
and the data to be transmitted is retransmission data, and a first time slot for side row transmission is randomly selected in a time domain resource set according to the first time slot number determined by the data retransmission parameter value.
29. The apparatus of any one of claims 16-28, wherein a last timeslot in the set of time domain resources is located within a timeslot corresponding to a latency margin allowed for transmission of the data to be transmitted.
30. The apparatus of any of claims 16-29, wherein the configuration information is indicated by signaling in a sidelink resource pool.
31. A communications apparatus comprising a processor coupled with at least one memory, the processor to read a computer program stored by the at least one memory so that the apparatus performs the method of any of claims 1 to 15.
32. A computer-readable storage medium, for storing a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 15.
33. A chip comprising a processor and a communication interface, the processor being configured to read instructions to perform the method of any of claims 1 to 15.
CN202010417960.3A 2020-05-15 2020-05-15 Data transmission method and communication device Pending CN113677023A (en)

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