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WO2019170084A1 - Procédé, dispositif et système de transmission d'informations de préemption - Google Patents

Procédé, dispositif et système de transmission d'informations de préemption Download PDF

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Publication number
WO2019170084A1
WO2019170084A1 PCT/CN2019/077015 CN2019077015W WO2019170084A1 WO 2019170084 A1 WO2019170084 A1 WO 2019170084A1 CN 2019077015 W CN2019077015 W CN 2019077015W WO 2019170084 A1 WO2019170084 A1 WO 2019170084A1
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WO
WIPO (PCT)
Prior art keywords
resource
communication device
information
preemption
preemption information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/077015
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English (en)
Chinese (zh)
Inventor
鲁振伟
刘德平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2019170084A1 publication Critical patent/WO2019170084A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • the present application relates to the field of wireless communication technologies, and in particular, to a method, device, and system for transmitting preemptive information.
  • V2V vehicle-to-vehicle communication
  • the base station Each terminal allocates resources on the side link for the terminal to perform control information and data transmission; the other is mode 4, and the terminal determines the candidate resource set according to the existing sensing process. Then, the resource is randomly selected in the candidate resource set for the terminal to perform control information and data transmission.
  • 3GPP 3rd generation partnership project
  • the existing listening process is selected by continuously increasing the reference signal received power (RSRP) threshold.
  • RSRP reference signal received power
  • the embodiment of the present application provides a method, a device, and a system for transmitting preemptive information, which can improve the reliability of burst service data transmission.
  • the first aspect provides a method for transmitting preemption information, where the method includes: determining, by the first communications device, a first resource to be occupied and a second resource for sending preemption information, where the preemption information is used to indicate the first The resource is occupied by the first communication device, and the time domain location of the second resource is before the time domain location of the first resource; the first communication device sends the preemption information to the second communication device on the second resource.
  • the first communication device may send, to the second communication device, the preemption information indicating that the first resource is occupied by the first communication device, after the first communication device determines the first resource to be occupied.
  • the second communication device can learn that the first resource is occupied by the first communication device, and then evades the first resource, so that when the first communication device has a burst service, the first communication device and the second communication device are selected to be the same.
  • the probability of resources thereby improving the reliability of bursty data transmission.
  • the second resource is a resource in a dedicated resource set for sending preemption information; the first communications device determines a second resource for sending preemption information, including: the first communications device according to the first The parameter determines the set of dedicated resources available to transmit the preemption information; the first communication device determines the second resource for transmitting the preemption information from the set of dedicated resources. Based on the scheme, the first communications device can determine a second resource for transmitting preemption information.
  • the first parameter is a parameter in the resource configuration parameter, where the resource configuration parameter is a parameter configured by the network device or a parameter pre-configured on the first communication device.
  • the second resource is a resource in a reserved resource of the first communication device. Based on the solution, since no additional dedicated resources for sending preemption information are needed, resource waste is reduced and resource utilization is improved.
  • the reserved resource is further configured to send a side-line control information (SCI), where the SCI includes first indication information, where the first indication information is used to indicate that preemption information is sent in the reserved resource.
  • SCI side-line control information
  • the second communications device can learn whether preemptive information is sent on the reserved resource.
  • the SCI further includes a resource configuration parameter, where the resource configuration parameter is used by the second communications device to receive the preemption information, where the resource configuration parameter includes: time domain location information of the second resource, the second At least one of frequency domain location information of the resource or a modulation and coding format MCS of the preemptive information.
  • the second communication device can receive the preemption information according to the resource configuration parameter.
  • the data on the reserved resource includes non-burst service data
  • the data on the first resource includes burst service data
  • the data on the reserved resource and the data on the first resource both include bursty service data. Based on the scheme, since the burst service data can be transmitted by using the reserved resources, the use of the resources is made more flexible.
  • the data on the first resource and the data on the reserved resource are channel-encoded data as a whole; correspondingly, the SCI or the preemption information further includes second indication information, and the second indication information And indicating that the data on the first resource and the data on the reserved resource are one transport block TB, or the second indication information is used to indicate that the data on the first resource and the data on the reserved resource are jointly encoded, or The two indication information is used to indicate that the data on the first resource and the data on the reserved resource need to be jointly decoded on the receiving side.
  • the second communication device can learn the coding mode of the channel, thereby correctly performing channel coding.
  • the data on the first resource and the data on the reserved resource are data that are separately channel-coded;
  • the SCI or the preemption information further includes second indication information, where the second indication information is used to indicate The data on the resource and the data on the reserved resource are independent TBs, or the second indication information is used to indicate that the data on the first resource and the data on the reserved resource are independently coded, or the second indication information
  • the data on the first resource and the data on the reserved resource need to be separately decoded on the receiving side, or the second indication information is used to instruct the receiving side to receive in a normal manner.
  • the second communication device can either encode the channel or not, thereby correctly performing channel coding.
  • the second resource is a resource in a resource for transmitting an SCI. Based on the solution, since no additional dedicated resources for sending preemption information are needed, resource waste is reduced and resource utilization is improved.
  • the preemption information includes second indication information, where the second indication information is used to indicate that the information is preemptive information; or the preemption information is scrambled by using a scrambling sequence different from the SCI. Based on the solution, the second communication device can correctly distinguish whether the information on the second resource is SCI or preemption information.
  • the first communication device determines the first resource to be occupied, including: the first communication device according to the received service priority indicated in the SCI sent by the other communication device, and the SCI sent by the other communication device The resource indicated in the determination of the first resource to be occupied. Based on the scheme, the first communication device can determine the first resource to be occupied.
  • the method for sending the preemptive information provided by the embodiment of the present application may further include: determining, by the first communications device, the permission according to the first parameter. Send preemption information. That is, the first communication device determines the second resource for transmitting the preemption information, if allowed.
  • the problem of failure of the burst service data transmission of the first communication device can be avoided, and the reliability of the data transmission can be improved; on the other hand, the interference of the data transmission of the first communication device to the data transmission of other communication devices can be avoided. To improve the quality of data transmission of other communication devices.
  • a method for receiving preemption information comprising: receiving, by a second communication device, preemption information from a first communication device, where the preemption information is used to indicate that the first resource is used by the first communication The device is occupied, wherein the time domain location of the second resource is before the time domain location of the first resource; and the second communication device performs resource avoidance on the first resource according to the preemption information.
  • the second communication device can receive the preemption information indicating that the first resource is occupied by the first communication device, and learn that the first resource is occupied by the first communication device, and then the first resource is used. The avoidance is performed, so that when the first communication device has a burst service, the probability that the first communication device and the second communication device select the same resource is reduced, thereby improving the reliability of the burst service data transmission.
  • the second communication device performs resource evasion on the first resource according to the preemption information, including: when the second communication device is performing resource selection, the second communication device determines, according to the preemption information, The first resource overlaps with a third resource in the candidate resource set of the second communications device; the second communications device excludes the third resource from the candidate resource set.
  • the resource avoidance of the first resource can be implemented when the second communication device is performing resource selection, thereby reducing the probability that the first communication device and the second communication device select the same resource, thereby improving the burst service. The reliability of data transmission.
  • the second communication device performs resource evasion on the first resource according to the preemption information, including: in case the second communication device has selected the third resource, the second communication device is configured according to the preemption information Determining that the third resource overlaps with the first resource; the second communications device stops transmitting data on the third resource.
  • the resource avoidance of the first resource may be implemented if the second communication device has selected the third resource, thereby reducing the probability that the first communication device and the second communication device select the same resource, thereby improving the probability The reliability of the transmission of business data.
  • the method for receiving the preemptive information provided by the embodiment of the present application may further include: determining, by the second communications device, that the number of consecutively preempted resources occupied by the second communications device is greater than or equal to a preset threshold; The communication device re-selects resources. Based on the solution, the service interruption caused by the second communication device waiting for a long time can be avoided, and the reliability of the data transmission of the second communication device is improved.
  • the second resource is a resource in the dedicated resource set for sending the preemption information.
  • the method for receiving the preemptive information provided by the embodiment of the present application may further include: determining, by the second communications device, the first parameter.
  • the dedicated resource set that can be used to receive the preemption information, wherein the second resource is included in the dedicated resource set; and the second communication device detects the preemption information on the resource in the dedicated resource set. Based on the solution, the second communication device may detect the preemption information on the second resource, and may further receive the preemption information from the first communication device on the second resource.
  • the first parameter is a parameter in the resource configuration parameter, where the resource configuration parameter is a parameter configured by the network device or a parameter pre-configured on the second communication device.
  • the second resource is a resource in a reserved resource of the first communication device. Based on the solution, since no additional dedicated resources for sending preemption information are needed, resource waste is reduced and resource utilization is improved.
  • the reserved resource is further used to send the side-line control information SCI, where the SCI includes the first indication information, and the method further includes: determining, by the second communications device, the pre-determination according to the first indication information
  • the reserved resources are sent with preemptive information. Based on the solution, the second communications device can learn whether preemptive information is sent on the reserved resource.
  • the SCI further includes a resource configuration parameter, where the resource configuration parameter includes: time domain location information of the second resource, frequency domain location information of the second resource, or a modulation and coding format MCS of the preemption information.
  • the resource configuration parameter includes: time domain location information of the second resource, frequency domain location information of the second resource, or a modulation and coding format MCS of the preemption information.
  • At least one of the second communication device receiving the preemption information from the first communication device on the second resource the second communication device receiving the preemption information from the first communication device on the second resource according to the resource configuration parameter . Based on the solution, the second communication device can receive the preemption information according to the resource configuration parameter.
  • the data on the reserved resource includes non-burst service data
  • the data on the first resource includes burst service data
  • the data on the reserved resource and the data on the first resource both include bursty service data. Based on the scheme, since the burst service data can be transmitted by using the reserved resources, the use of the resources is made more flexible.
  • the data on the first resource and the data on the reserved resource are channel-encoded data as a whole; correspondingly, the SCI or the preemption information further includes second indication information, and the second indication information And indicating that the data on the first resource and the data on the reserved resource are one transport block TB, or the second indication information is used to indicate that the data on the first resource and the data on the reserved resource are jointly encoded, or The second indication information is used to indicate that the data on the first resource and the data on the reserved resource need to be jointly decoded on the receiving side.
  • the method for receiving the preemptive information provided by the embodiment of the present application may further include: the second terminal according to the second indication information, The data on the first resource and the data on the reserved resource are jointly decoded. Based on this scheme, since the second communication device can learn the coding mode of the channel, channel coding can be performed correctly.
  • the data on the first resource and the data on the reserved resource are data that are separately channel-coded;
  • the SCI or the preemption information further includes second indication information, where the second indication information is used to indicate The data on the resource and the data on the reserved resource are independent TBs, or the second indication information is used to indicate that the data on the first resource and the data on the reserved resource are independently coded, or the second indication information
  • the data on the first resource and the data on the reserved resource need to be separately decoded on the receiving side, or the second indication information is used to indicate that the receiving side performs the receiving in the normal manner; the receiving information is received in the embodiment of the present application.
  • the method may further include: the second terminal separately decoding the data on the first resource and the data on the reserved resource according to the second indication information. Based on this scheme, since the second communication device can learn the coding mode of the channel, channel coding can be performed correctly.
  • the second resource is a resource in a resource for transmitting an SCI. Based on the solution, since no additional dedicated resources for sending preemption information are needed, resource waste is reduced and resource utilization is improved.
  • the preemption information includes the second indication information.
  • the method for receiving the preemption information provided by the embodiment of the present application may further include: determining, by the second communications device, that the information on the second resource is preempted according to the second indication information. information. Based on the solution, the second communication device can correctly distinguish whether the information on the second resource is SCI or preemption information.
  • the preemption information is scrambled by using a scrambling sequence different from the SCI.
  • the method for receiving the preemption information provided by the embodiment of the present application may further include: adding, by the second communication device, information according to the second resource.
  • the scrambling sequence determines that the information on the second resource is preemption information. Based on the solution, the second communication device can correctly distinguish whether the information on the second resource is SCI or preemption information.
  • the method for receiving the preemption information provided by the embodiment of the present application may further include: A parameter determination allows the reception of preemption information. That is, the second communication device receives the preemption information from the first communication device on the second resource, if allowed. In this way, on the one hand, the problem of failure of the burst service data transmission of the first communication device can be avoided, and the reliability of the data transmission can be improved; on the other hand, the interference of the data transmission of the first communication device to the data transmission of other communication devices can be avoided. To improve the quality of data transmission of other communication devices.
  • the preemption information includes time domain location information of the first resource, frequency domain location information of the first resource, priority of data on the first resource, and first At least one of the MCS of the data on the resource, the period of the first resource, or the expected number of occupations.
  • a first communication device having the functionality to implement the method of any of the preceding aspects.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • a first communication device comprising: a processor and a memory; the memory is configured to store a computer execution instruction, and when the first communication device is in operation, the processor executes the computer execution instruction stored in the memory And the first communication device performs the method of transmitting the preemption information according to any one of the above first aspects.
  • a first communication device comprising: a processor; the processor is configured to couple with a memory, and after reading an instruction in the memory, perform any one of the foregoing first aspects according to the instruction The method for transmitting the preemption information.
  • a computer readable storage medium storing instructions for causing a computer to perform the preemption information according to any one of the above first aspects when executed on a computer The method of sending.
  • a computer program product comprising instructions for causing a computer to perform the method of transmitting preemption information according to any of the above first aspects, when executed on a computer, is provided.
  • a chip system comprising a processor, configured to support a first communication device to implement the functions involved in the foregoing aspects, such as determining a first resource to be occupied and a method for transmitting preemption information Two resources.
  • the chip system further includes a memory for storing program instructions and data necessary for the first communication device.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • a second communication device having the function of implementing the method of any of the above second aspects.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • a second communication device comprising: a processor and a memory; the memory is configured to store a computer execution instruction, and when the second communication device is in operation, the processor executes the computer execution instruction stored in the memory
  • the second communication device is configured to perform the preemption information receiving method according to any one of the above second aspects.
  • a second communication device comprising: a processor; the processor is configured to couple with a memory, and after reading an instruction in the memory, perform any one of the second aspects as described above according to the instruction The method for receiving preemption information described in the item.
  • a twelfth aspect a computer readable storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the preemption of any of the above second aspects How to receive information.
  • a thirteenth aspect a computer program product comprising instructions for causing a computer to perform the method of receiving preemptive information according to any of the above second aspects, when run on a computer.
  • a chip system comprising a processor, configured to support the second communication device to implement the functions involved in the foregoing aspects, for example, performing resource avoidance on the first resource according to the preemption information.
  • the chip system further includes a memory for storing necessary program instructions and data for the second communication device.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • a preemptive information transmission system comprising the first communication device of any of the above aspects, and the at least one second communication device of any of the above aspects.
  • FIG. 1 is a schematic diagram 1 of a resource structure provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram 2 of a resource structure provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a PRB according to an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a preemption information transmission system according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of hardware of a communication device according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic flowchart of a method for transmitting preemption information according to an embodiment of the present disclosure
  • FIG. 7 is a schematic diagram of selection of a first resource according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram 1 of resource distribution according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram 2 of resource distribution according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram 3 of resource distribution according to an embodiment of the present application.
  • FIG. 11 is a schematic diagram 4 of resource distribution according to an embodiment of the present application.
  • FIG. 12 is a schematic diagram 5 of resource distribution according to an embodiment of the present application.
  • FIG. 13 is a schematic diagram 6 of resource distribution provided by an embodiment of the present application.
  • FIG. 14 is a schematic diagram 7 of resource distribution provided by an embodiment of the present application.
  • Figure 15 is a schematic diagram 8 of resource distribution provided by an embodiment of the present application.
  • FIG. 16 is a schematic diagram 9 of resource distribution provided by an embodiment of the present application.
  • FIG. 17 is a schematic diagram 10 of resource distribution provided by an embodiment of the present application.
  • FIG. 18 is a schematic diagram 11 of resource distribution provided by an embodiment of the present application.
  • FIG. 19 is a schematic diagram 12 of resource distribution provided by an embodiment of the present application.
  • FIG. 20 is a schematic diagram of resource distribution provided by an embodiment of the present application.
  • FIG. 21 is a schematic diagram showing the distribution of resources according to an embodiment of the present application.
  • FIG. 22 is a schematic diagram of resource distribution provided by an embodiment of the present application.
  • 23 is a schematic diagram 16 of resource distribution provided by an embodiment of the present application.
  • FIG. 24 is a schematic diagram of resource distribution according to an embodiment of the present application.
  • 25 is a schematic diagram of resource distribution provided by an embodiment of the present application.
  • 26 is a schematic diagram of resource distribution provided by an embodiment of the present application.
  • FIG. 27 is a schematic diagram of resource distribution provided by an embodiment of the present application.
  • FIG. 29 is a schematic diagram of resource distribution provided by an embodiment of the present application.
  • FIG. 30 is a schematic diagram of resource distribution provided by an embodiment of the present application.
  • FIG. 31 is a schematic diagram of resource distribution provided by an embodiment of the present application.
  • FIG. 33 is a schematic diagram 1 of resource avoidance provided by an embodiment of the present application.
  • FIG. 34 is a schematic diagram 2 of resource avoidance according to an embodiment of the present application.
  • FIG. 35 is a schematic diagram 3 of resource avoidance provided by an embodiment of the present application.
  • FIG. 36 is a schematic structural diagram of a first communications device according to an embodiment of the present disclosure.
  • FIG. 37 is a schematic structural diagram of a second communication device according to an embodiment of the present application.
  • the resources in the embodiment of the present application may also be referred to as time-frequency resources, that is, include time domain resources and frequency domain resources.
  • time-frequency resources that is, include time domain resources and frequency domain resources.
  • the smallest unit of the time domain resource is a symbol; the smallest unit of the frequency domain resource is a subcarrier.
  • a radio frame is defined to include 10 subframes, each subframe has a length of 1 millisecond (ms), and each subframe includes two slots. Each slot is 0.5ms. The number of symbols included in each slot is related to the length of the cyclic prefix (CP) in the subframe. If the CP is a normal CP, each slot includes 7 symbols, and each subframe is composed of 14 symbols. For example, as shown in FIG. 1, each subframe can be numbered by #0, #1, # 2, #3, #4, #5, #6, #7, #8, #9, #10, #11, #12, #13 symbol composition. If the CP is an extended CP, each slot includes 6 OFDM symbols, and each subframe is composed of 12 symbols.
  • CP is an extended CP
  • each subframe may be numbered as #0, #1, respectively.
  • the size of a physical resource block is defined as one time slot in the time domain and 180 kHz in the frequency domain.
  • PRB physical resource block
  • one PRB includes 12 subcarriers in the frequency domain, and at this time, one PRB includes 84 or 72 resource elements (REs), and the RE may be Uniquely identified by the index pair (k, l), where k is the subcarrier index and l is the symbol index.
  • the PRB is numbered in the frequency domain, which is a PRB index or a PRB sequence number.
  • a PRB pair is defined as a pair of PRBs with the same PRB index or PRB sequence number of two slots on one subframe.
  • one radio frame is defined to include 10 subframes, each subframe has a length of 1 millisecond (ms), and each subframe includes one or more slots.
  • a physical resource block PRB is defined to include 12 subcarriers in the frequency domain, and the PRBs are numbered in the frequency domain, that is, a PRB index or a PRB sequence number.
  • the PRB sequence number is the number of the PRB in the frequency domain, and the frequency domain includes 12 subcarriers. Therefore, the PRB sequence number in the figure of the embodiment of the present application is not in the coordinate system. Represents a coordinate value, but only schematically represents the frequency domain range of a PRB. For example, in FIG. 3, a PRB with a PRB number q indicates a frequency domain range between the dotted line 1 and the broken line 2, which is uniformly described herein, and will not be described below.
  • Preemption information is used to indicate that the first resource is occupied by the first communication device.
  • the preemption information may include, for example, time domain location information of the first resource, frequency domain location information of the first resource, priority of data on the first resource, and modulation and coding mode of data on the first resource (Modulation and Coding Scheme, At least one of the MCS), the period of the first resource, or the expected number of occupations.
  • the time domain location information of the first resource may include, for example, a time interval between the first resource and the second resource used to send the preemption information, and a time domain size of the first resource; or, optionally, The time domain location information of the first resource may include, for example, a time domain start location of the first resource and a time domain end location of the first resource; or, optionally, to reduce the delay, if preemptive information for sending the preemption information is configured in advance
  • the second resource and the first resource to be occupied by the first communication device occupy the continuous time domain resource, and the first resource and the second resource used to send the preemption information may not be indicated in the time domain location information of the first resource.
  • the time interval or the time domain start position of the first resource is uniformly described herein, and will not be described below.
  • the frequency domain location information of the first resource may include, for example, a frequency domain start location of the first resource and a frequency domain end location of the first resource, or the frequency domain location information of the first resource may include, for example, The frequency domain start position of a resource and the frequency domain size of the first resource.
  • the frequency domain start position of the first resource is represented by a frequency domain start PRB sequence number of the first resource
  • the frequency domain end position of the first resource is represented by a frequency domain end PRB sequence number of the first resource, where the first resource is
  • the frequency domain size is usually characterized by the number of PRB sequence numbers corresponding to the first resource or the number of subcarriers corresponding to the first resource.
  • the time domain of the first resource may also be referred to as a time domain resource corresponding to the first resource
  • the frequency domain of the first resource may also be referred to as a frequency domain resource corresponding to the first resource. This embodiment of the present application does not specifically limit this.
  • Time division The time division in the embodiment of the present application refers to resources in the same frequency domain and different time domain resources.
  • Frequency division The frequency division in the embodiment of the present application means that the time domain resources may be the same or different in different frequency domain resources.
  • the SCI in the embodiment of the present application refers to control information sent from the sending end, and is used to indicate information such as resources, MCS, or service priority occupied by the data transmission, and the receiving end.
  • the data can be received according to the indication of the SCI.
  • the SCI in the embodiment of the present application may also be referred to as a scheduling assignment (SA), which is uniformly described herein, and is not further described below.
  • SA scheduling assignment
  • the words “first”, “second”, and the like are used to distinguish the same items or similar items whose functions and functions are substantially the same. Those skilled in the art can understand that the words “first”, “second” and the like do not limit the number and execution order, and the words “first”, “second” and the like are not necessarily limited.
  • the network architecture and the service scenario described in the embodiments of the present application are for the purpose of more clearly illustrating the technical solutions of the embodiments of the present application, and are not limited to the technical solutions provided by the embodiments of the present application.
  • the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.
  • a preemption information transmission system 40 is provided in the embodiment of the present application.
  • the preemption information transmission system 40 includes a first communication device 401 and one or more second communication with the first communication device 401.
  • Communication device 402. The communication between the first communication device 401 and any second communication device 402 will be described below as an example.
  • the first communication device 401 is configured to determine a first resource to be occupied and a second resource for sending preemption information, and send preemption information to the second communication device 402 on the second resource.
  • the preemption information is used to indicate that the first resource is occupied by the first communications device, and the time domain location of the second resource is before the time domain location of the first resource.
  • the second communication device 402 is configured to receive the preemption information from the first communication device 401 on the second resource, and perform resource avoidance on the first resource according to the preemption information.
  • the preemption information transmission system 40 may further include a network device for configuring the first communication device 401 and the second communication device 402 with information required for resource pool configuration, as in the following embodiments.
  • the resource configuration parameters and the like are not specifically limited in this embodiment of the present application.
  • the network device in the embodiment of the present application may include, for example, a base station, a relay station, or an access point, and the like.
  • the base station in the embodiment of the present application may be, for example, a base transceiver station in a global system for mobile communication (GSM) or a code division multiple access (CDMA) network.
  • GSM global system for mobile communication
  • CDMA code division multiple access
  • BTS which may also be an NB (NodeB) in wideband code division multiple access (WCDMA), or an eNodeB (evolutional NodeB) in LTE or a base station in other networks in the future, etc.
  • NodeB nodeB
  • WCDMA wideband code division multiple access
  • eNodeB evolutional NodeB
  • the communication device (including the first communication device 401, the second communication device 402, and the following third communication device, etc.) involved in the embodiments of the present application may include, for example, a terminal or a chip in the terminal.
  • the embodiment of the present application does not specifically limit this.
  • the terminal in the embodiment of the present application may include, for example, various handheld devices having wireless communication functions, an in-vehicle device, a wearable device, a computing device, or other processing device connected to the wireless modem; and may further include a subscriber unit.
  • cellular phone smart phone, wireless data card, personal digital assistant (PDA) computer, tablet computer, wireless modem, handheld, laptop Laptop computer, cordless phone or wireless local loop (WLL) station, machine type communication (MTC) terminal, user equipment (UE), mobile station ( Mobile station, MS), terminal device or relay user equipment.
  • PDA personal digital assistant
  • WLL wireless local loop
  • MTC machine type communication
  • UE user equipment
  • MS mobile station
  • terminal device or relay user equipment.
  • the relay user equipment may be, for example, a 5G residential gateway (RG).
  • RG 5G residential gateway
  • the first communication device may send, to the second communication device, the preemption information indicating that the first resource is occupied by the first communication device, after the first communication device determines the first resource to be occupied.
  • the second communication device can learn that the first resource is occupied by the first communication device, and then evades the first resource, so that when the first communication device has a burst service, the first communication device and the second communication device are selected to be the same. The probability of resources, thereby improving the reliability of bursty data transmission.
  • the first communication device or the second communication device in the embodiment of the present application may be implemented by one device, or may be implemented by multiple devices, or may be a functional module in a device.
  • This example does not specifically limit this. It can be understood that the above functions can be either a network component in a hardware device, a software function running on dedicated hardware, or a virtualization function instantiated on a platform (for example, a cloud platform).
  • FIG. 5 is a schematic structural diagram of hardware of a communication device according to an embodiment of the present application.
  • the communication device 500 includes at least one processor 501, a communication line 502, a memory 503, and at least one communication interface 504.
  • the processor 501 can be a general central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the execution of the program of the present application. integrated circuit.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • Communication line 502 can include a path for communicating information between the components described above.
  • Communication interface 504 using any type of transceiver, for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc. .
  • RAN radio access network
  • WLAN wireless local area networks
  • the memory 503 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type that can store information and instructions.
  • the dynamic storage device can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, and a disc storage device. (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be Any other media accessed, but not limited to this.
  • the memory may be stand-alone and connected to the processor via communication line 502. The memory can also be integrated with the processor.
  • the memory 503 is used to store computer execution instructions for executing the solution of the present application, and is controlled by the processor 501 for execution.
  • the processor 501 is configured to execute the computer-executed instructions stored in the memory 503, so as to implement the method for transmitting the preemptive information provided by the following embodiments of the present application.
  • the computer-executed instructions in the embodiment of the present application may also be referred to as an application code, which is not specifically limited in this embodiment of the present application.
  • the processor 501 may include one or more CPUs, such as CPU0 and CPU1 in FIG.
  • communication device 500 can include multiple processors, such as processor 501 and processor 508 in FIG. Each of these processors can be a single-CPU processor or a multi-core processor.
  • processors herein may refer to one or more devices, circuits, and/or processing cores for processing data, such as computer program instructions.
  • the communication device 500 can also include an output device 505 and an input device 506.
  • Output device 505 is in communication with processor 501 and can display information in a variety of ways.
  • the output device 505 can be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. Wait.
  • Input device 506 is in communication with processor 501 and can receive user input in a variety of ways.
  • input device 506 can be a mouse, keyboard, touch screen device, or sensing device, and the like.
  • the communication device 500 described above may be a general purpose device or a dedicated device.
  • the communication device 500 can be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, an embedded device, or the like in FIG. device.
  • PDA personal digital assistant
  • the embodiment of the present application does not limit the type of the communication device 500.
  • the transmission system of the preemptive information shown in FIG. 4 is used as an example of the communication between the first communication device and any of the second communication devices. As shown in FIG. Including the following steps:
  • the first communications device determines a first resource to be occupied.
  • the first communications device determines a second resource for sending preemption information, where a time domain location of the second resource is before a time domain location of the first resource.
  • the first communications device sends preemption information to the second communications device on the second resource.
  • the second communications device receives the preemption information from the first communications device on the second resource.
  • the second communications device performs resource avoidance on the first resource according to the preemption information.
  • step S601 of the embodiment of the present application :
  • the first communication device can determine the first resource to be occupied by the following manner.
  • the first communication device determines the first resource to be occupied according to the received service priority indicated in the SCI sent by the other terminal and the resource indicated in the SCI sent by the other terminal.
  • the first communication device may compare the received service priority in the SCI sent by the other communication device with the service priority of the first terminal itself, and set the service priority to be higher than or equal to the service priority. After the resources indicated in the SCI sent by the service priority communication device are excluded from the candidate resource set, the first resource to be occupied is selected from the candidate resource set.
  • the service priority indicated in the SCI sent by the fourth communication device is A
  • the SCI indicated by the fifth communication device indicates The service priority is B
  • the service priority of the first communication device is C. If the priority level is A>C>B, that is, the service priority of the first communication device is lower than the service priority of the fourth communication device.
  • the service priority of the first communication device is higher than the service priority of the fifth communication device, and the first communication device excludes the resource indicated in the SCI sent by the fourth communication device from the candidate resource set, and then selects the candidate resource. Select the first resource to be occupied in the collection. For example, if the candidate resource set includes the resource indicated in the SCI sent by the fifth communications device, the first communications device may determine that the first resource is the resource indicated in the SCI sent by the fifth communications device.
  • the first communications device may compare the received service priority indicated by the received SCI with the preset service priority, and set the service priority to be higher than or equal to the preset. After the resources indicated in the SCI sent by the service priority communication device are excluded from the candidate resource set, the first resource to be occupied is selected from the candidate resource set.
  • the service priority indicated in the SCI sent by the fourth communication device is A
  • the SCI indicated by the fifth communication device indicates The service priority is B
  • the default service priority is C.
  • the priority level is A>C>B, that is, the preset service priority is lower than the service priority of the fourth communication device, and the preset service is The priority is higher than the service priority of the fifth communication device, after the first communication device excludes the resource indicated in the SCI sent by the fourth communication device from the candidate resource set, and selects the first to be occupied from the candidate resource combination.
  • a resource For example, if the candidate resource set includes the resource indicated in the SCI sent by the fifth communications device, the first communications device may determine that the first resource is the resource indicated in the SCI sent by the fifth communications device.
  • the first communication device may randomly select one of the resources indicated in the SCI sent by the multiple communication devices.
  • the resource is used as the first resource, which is not specifically limited in this embodiment of the present application.
  • the first resource may be a resource occupied by the third communication device or a part of resources occupied by the third communication device. That is to say, the first communication device occupies resources of one other communication device as much as possible to minimize the amount of data of the affected communication device.
  • the first communication device when the first communication device has three candidate resources (two solid frame resources and one dotted frame resource), the first communication device preferentially selects the solid frame resource, and tries to avoid selection. Dotted box resource. The reason is that if the solid frame resource is selected, only one other communication device (such as the fourth communication device or the fifth communication device) is affected, and when the dotted frame resource is selected, there are more other communication devices ( For example, the fourth communication device and the fifth communication device are affected.
  • the first communications device may also determine the first resource to be occupied by other means, such as from The first resource or the like is randomly selected in the set of the candidate resources, or the method is used to determine the first resource to be occupied by the first communication device.
  • step S602 of the embodiment of the present application :
  • the first communication device may determine the second resource for transmitting the preemption information by:
  • the second resource is a resource in a dedicated resource set for sending preemption information.
  • a resource set may be pre-configured, and the resources in the resource set are only used to send preemption information, and cannot be used to send other information except preemption information.
  • the first communications device may first determine, according to the first parameter, a dedicated resource set that can be used to send the preemption information, and then determine, from the dedicated resource set, the second resource used to send the preemption information.
  • the resource is randomly selected from the dedicated resource set as the second resource, or the second resource is further determined according to the second parameter, which is not specifically limited in this embodiment of the present application.
  • the first parameter or the second parameter may be a parameter in a resource configuration parameter.
  • the resource configuration parameter in the embodiment of the present application may be a parameter configured by the network device or a parameter configured in advance on the first communication device, and is not specifically limited in this embodiment.
  • the first parameter or the second parameter in the embodiment of the present application may include, for example, at least one of time domain location information or frequency domain location information of a dedicated resource set for transmitting preemption information.
  • the first parameter in the embodiment of the present application may include, for example, a dedicated resource set for sending preemption information (ie, in FIG. 8 The frequency domain location information of the resource set 2); optionally, the first parameter may further include time domain location information of the dedicated resource set for sending the preemption information, which is not specifically limited in this embodiment of the present application.
  • the resource set 1 in FIG. 8 is a set of resources for transmitting other information than the preemption information, including the first resource described above.
  • the first resource set and the second resource set in the embodiment of the present application may be a set of resources that are consecutive in the frequency domain, or may be a set of resources that are discontinuous in the frequency domain, and FIG. 8 is only a schematic diagram.
  • the first resource set and the second resource set are a set of resources that are not consecutive in the frequency domain. The embodiment of the present application does not specifically limit this.
  • the first resource set and the second resource set are a set of resources that are discontinuous in the frequency domain
  • the first resource set and the second resource set generally belong to different resource pools
  • the first parameter in the embodiment of the present application may include, for example, a dedicated resource set for sending preemption information, such as each scheduling.
  • the last two symbols of the time unit hereinafter referred to as the time unit
  • the first parameter may further include the frequency domain location information of the dedicated resource set for sending the preemption information, which is not specifically limited in this embodiment of the present application.
  • time unit in the embodiment of the present application may be, for example, a subframe in the LTE system or a time slot in the 5G system, which is not specifically limited in this embodiment of the present application.
  • the second resource is a resource in the reserved resource of the first communication device.
  • the preemption information may be sent by using the reserved resource, which is not specifically limited in this embodiment of the present application.
  • the reserved resource is a reserved resource that has a periodicity in time, and is generally used to send periodic data.
  • the reserved resource is described in units of one time unit in the time domain. , hereby unified, the following will not repeat.
  • the reserved resource in the embodiment of the present application may also be used to send the SCI and the data corresponding to the SCI. That is, the preemption information in the embodiment of the present application may be sent along with the data corresponding to the SCI or the SCI.
  • the schematic diagram of the preemption information being sent along with the data corresponding to the SCI or the SCI may be as shown in FIG. 10 to FIG.
  • the resource for transmitting data and the resource for transmitting the SCI belong to the same resource pool; in FIG. 12 and FIG. 13, the resource for transmitting data and the resource for transmitting SCI It belongs to different resource pools.
  • the SCI resource pool is used to send SCI; the data resource pool is used to send data.
  • the resource for transmitting the preemption information and the resource for transmitting the SCI are time-division; in FIG.
  • the resource for transmitting the preemption information and the resource for transmitting the SCI are frequency-divided;
  • the preemption information is sent along with the SCI, and the resource for transmitting the preemption information and the resource for sending the SCI are frequency-divided;
  • the preemption information is sent along with the data corresponding to the SCI, and is used for sending the preemption information.
  • the resources and resources used to transmit the data corresponding to the SCI are frequency-divided.
  • the preemption information may be sent along with the data corresponding to the SCI or the SCI.
  • the preemption information may be sent along with the data corresponding to the SCI or the SCI.
  • the resource for transmitting the preemption information and the resource for transmitting the SCI may also be time-division; in FIG. 13, the resource for transmitting the preemption information and the resource for transmitting the data corresponding to the SCI are also The embodiment of the present application does not specifically limit this.
  • the schematic diagram of the preemption information being sent along with the data corresponding to the SCI or the SCI may be as shown in FIG. 14 to FIG. 17.
  • the resource for transmitting data and the resource for transmitting the SCI belong to the same resource pool; in FIG. 16 and FIG. 17, the resource for transmitting data and the resource for transmitting SCI It belongs to different resource pools.
  • the SCI resource pool is used to send SCI; the data resource pool is used to send data.
  • the resource for transmitting the preemption information and the resource for transmitting the SCI are time-division; in FIG.
  • the resource for transmitting the preemption information and the resource for transmitting the SCI are frequency-divided;
  • the preemption information is sent along with the SCI, and the resource for transmitting the preemption information and the resource for sending the SCI are frequency-divided;
  • the preemption information is sent along with the data corresponding to the SCI, and is used for sending the preemption information.
  • the resources and resources used to transmit the data corresponding to the SCI are frequency-divided.
  • the preemption information may be sent along with the data corresponding to the SCI or the SCI.
  • the preemption information may be sent along with the data corresponding to the SCI or the SCI.
  • the resource for transmitting the preemption information and the resource for transmitting the SCI may also be time-division; in FIG. 17, the resource for transmitting the preemption information and the resource for transmitting the data corresponding to the SCI are also The embodiment of the present application does not specifically limit this.
  • the resource for transmitting the preemption information and the resource for transmitting the SCI may be one resource, or may be independent.
  • the second resource in the embodiment of the present application may be used to send the preemption information, or the second resource in the embodiment of the present application may send the SCI in addition to the preemption information. The embodiment does not specifically limit this.
  • the first communications device may determine, according to the resource configuration parameter, a second resource that is used to send the preemption information, where the resource configuration parameter may include: time domain location information of the second resource, and the second resource. At least one of frequency domain location information or MCS preempting information.
  • the resource configuration parameter may be a parameter configured for the network device or a parameter that is pre-configured on the first communication device, and the like, which is not specifically limited in this embodiment.
  • the resource configuration parameter is non-fixed.
  • the SCI may further include the resource configuration parameter, where the resource configuration parameter is used by the second communications device to receive the preemption information.
  • the resource configuration parameter is fixed.
  • the time-frequency resource location used to send the preemption information is fixed.
  • the third symbol is used to transmit preemption information; or, in FIG. 11 or FIG. 15, resources with PRB numbers 3 and 4 are used to transmit preemption information, and the like.
  • the MCS is also fixed.
  • the MCS is a quadrature phase shift keying (QPSK), which is not specifically limited in this embodiment of the present application.
  • the third parameter in the resource configuration parameter is fixed, and the fourth parameter is non-fixed.
  • the SCI may further include the fourth parameter, where the fourth parameter is used.
  • the second communication device receives the preemption information, which is not specifically limited in this embodiment of the present application.
  • the resource configuration parameter may be pre-configured on the second communication device, so the resource configuration parameter may not be carried in the SCI. , will not repeat them below.
  • the SCI may further include first indication information, where the first indication information is used to indicate that the preemption information is sent on the reserved resource. For example, if 1 bit is used, 1 means that there is preemption information transmission on the reserved resource, and 0 means that there is no preemption information transmission on the reserved resource.
  • the resource configuration parameter may be further included in the SCI, so that the second communication device can obtain the resource configuration parameter in time. The resource configuration parameter is used to send the preemption information, and the second communication device can receive the preemption information according to the resource configuration parameter.
  • the data part transmission in the reserved resource may have different implementation manners, which will be exemplarily described below.
  • the data on the reserved resource includes non-burst service data
  • the data on the first resource includes burst service data.
  • the case where the resources in the resource pool can be time-divided is taken as an example.
  • the data on the reserved resources in FIG. 14 to FIG. 17 may be non-burst service data
  • the data on the first resource may include burst service data. The results are shown in Figures 18 to 21, respectively.
  • the data on the reserved resource and the data on the first resource both include burst service data.
  • the data on the reserved resources in FIG. 14 to FIG. 17 may be burst service data
  • the data on the first resource may include burst service data.
  • the results are shown in Figures 22 to 25, respectively. This situation is generally applicable to scenarios where non-burst service data has been sent, such as periodic, there are reserved resources, but there are no periodic non-burst service data to be sent, or non-burst service data is large. In the scenario, and so on, the embodiment of the present application does not specifically limit this.
  • the data on the first resource and the data on the reserved resource may be data that is channel-encoded as a whole, or may be data that is separately encoded by the channel, which is not specifically limited in this embodiment of the present application.
  • the SCI or the preemption information may further include third indication information, where the third indication information is used to indicate the first resource, if the data on the first resource and the data on the reserved resource may be the data that is channel-encoded as a whole.
  • the data on the data and the reserved resource is a transport block (TB), or the third indication information is used to indicate that the data on the first resource and the data on the reserved resource are jointly encoded, or a third indication
  • the information is used to indicate that the data on the first resource and the data on the reserved resource need to be jointly decoded on the receiving side.
  • the SCI or the preemption information further includes third indication information, where the third indication information is used to indicate the first resource.
  • the data and the data on the reserved resource are independent TBs, or the third indication information is used to indicate that the data on the first resource and the data on the reserved resource are independently coded, or the third indication information is used to indicate the first resource.
  • the data on the upper data and the reserved resource need to be separately decoded on the receiving side, or the third indication information is used to instruct the receiving side to receive in the normal manner.
  • the data on the first resource and the data on the reserved resource are one TB, or the data on the first resource and the data on the reserved resource are indicated. It is jointly coded, or indicates that the data on the first resource and the data on the reserved resource need to be jointly decoded on the receiving side; when 0, the data on the first resource and the data on the reserved resource are independent TBs. Or indicating that the data on the first resource and the data on the reserved resource are independently coded, or that the data on the first resource and the data on the reserved resource need to be separately decoded on the receiving side, or the receiving side is instructed to perform the normal manner. receive.
  • the SCI or the preemption information is used.
  • the receiving side communication device may be separately received and decoded according to two independent TBs on two time units, which is not specifically limited in this embodiment.
  • the reservation may be directly used as shown in FIG. 26 to FIG. 31.
  • the resource sends the burst service data without additional resource preemption, so that the transmission delay of the burst service data can be further reduced, which is not specifically limited in this embodiment of the present application.
  • the resource for transmitting data and the resource for transmitting the SCI belong to the same resource pool; in FIG. 28 and FIG. 31, resources for transmitting data and The resources used to send the SCI belong to different resource pools.
  • the SCI resource pool is used to send SCI; the data resource pool is used to send data.
  • the resources in the resource pool are frequency-divided, and in FIG. 26, the resources for transmitting the burst service data and the resources for transmitting the SCI are time-division, and in FIG. 27, The resource for transmitting the burst service data and the resource for transmitting the SCI are frequency-divided; in FIG. 29 and FIG.
  • the resources in the resource pool are time-division, and in FIG. 29, the data for transmitting the burst service data is used.
  • the resource and the resource for transmitting the SCI are time-division.
  • the resource for transmitting the burst service data and the resource for transmitting the SCI are frequency-divided.
  • the advantage of the foregoing mode 2 with respect to the mode 1 is: on the one hand, the mode 2 does not need an additional dedicated resource for sending the preemption information, thereby reducing resource waste and improving resource utilization; on the other hand, The use of reserved resources to send bursty service data makes the use of resources more flexible.
  • the second resource is a resource in a resource for sending an SCI.
  • the first communications device may send the preemption information by using the resource that sends the SCI.
  • the SCI resource pool is used to send the SCI, and in addition, the first communication device may also send the preemption information in the SCI resource pool. Since no additional dedicated resources for sending preemption information are needed, resource waste is reduced and resource utilization is improved.
  • the resource for transmitting the SCI and the resource for sending the preemption information are frequency divisions.
  • the resource for sending the SCI and the resource for sending the preemption information may also be time-division. This is not specifically limited.
  • the SCI resource pool can be used to send the SCI and the preemption information. Therefore, the SCI and the preemption information need to be distinguished.
  • the preemption information or a field added to the SCI is used to distinguish the two, for example, 1 bit, when 0, the information is SCI, and when 1 is 1, the information is preemption information.
  • the two use different scrambling sequences, for example, if different sequence initialization IDs (c init ) are used, when the sequence initialization ID is ID1, the information is SCI, and when the sequence initialization ID is ID2 Indicates that the information is preemption information and the like.
  • the resource configuration parameter in the embodiment of the present application may further include a parameter, where the parameter is used to indicate whether the burst is allowed to be sent in the resource pool corresponding to the resource configuration parameter.
  • the parameter is used to indicate whether the burst is allowed to be sent in the resource pool corresponding to the resource configuration parameter.
  • Business data For example, if 1 bit is used, 1 means permission, and 0 means not.
  • the first communication device determines the second resource for transmitting the preemption information, and if not allowed, the first communication device determines that the burst is not sent in the resource pool corresponding to the resource configuration parameter.
  • Business data For example, if 1 bit is used, 1 means permission, and 0 means not.
  • the problem of failure of the burst service data transmission of the first communication device can be avoided, and the reliability of the data transmission can be improved; on the other hand, the interference of the data transmission of the first communication device to the data transmission of other communication devices can be avoided. To improve the quality of data transmission of other communication devices.
  • the preemption information in the embodiment of the present application may include all information in the existing SCI, that is, the preemption may be sent in an existing SCI format.
  • the SCI corresponding to the data may be sent on the first resource according to the existing manner; or the SCI may not be sent on the first resource, because the preemption information already includes the information.
  • the SCI is not specifically limited in this embodiment.
  • the embodiment of the present application may also define a new control information format for sending preemption information, where the preemption information includes only the minimum information indicating the first resource, such as when only the necessary first resource is included.
  • the domain location information, the frequency domain location information of the first resource, or the priority of the data on the first resource At this time, when the data is sent on the first resource, the data needs to be sent on the first resource according to the existing method.
  • the corresponding SCI is not specifically limited in this embodiment.
  • step S604 of the embodiment of the present application :
  • the method for transmitting the preemptive information provided by the embodiment of the present application may further include: the second communication device Determining, according to the first parameter, a dedicated resource set that is used to receive the preemption information, wherein the dedicated resource set includes the second resource; and further, the second communication device detects the preemption information on the resource in the dedicated resource set.
  • the second communication device since the first communication device sends the preemption information on the second resource, the second communication device may detect the preemption information on the second resource, and the second communication device may receive the second resource.
  • the preemption information For a description of the first parameter and the dedicated resource set, reference may be made to the method 1 in step S602, and details are not described herein again.
  • the embodiment of the present application may further include: determining, by the second communications device, that the preemptive information is sent on the reserved resource according to the first indication information.
  • the second communication device can receive the preemption information on the second resource.
  • the second communications device may receive the preemption information from the first communications device on the second resource according to the resource configuration parameter.
  • the resource configuration parameter refer to the description of the resource configuration parameter in the second mode in step S602, and details are not described herein again.
  • the second resource is the resource in the resource for sending the SCI corresponding to the mode 3 in the step S602
  • the method for distinguishing the preemption information from the SCI is to add a domain to the preemption information or the SCI.
  • the second communication device first determines whether the received SCI or the preemption information is received according to the domain after receiving an SCI or preemption information. If the SCI is, the SCI is interpreted according to the format of the SCI, if the preemption information is obtained. The description is based on the format of the preemptive information, which is not specifically limited in the embodiment of the present application.
  • the second resource is the resource in the resource for sending the SCI corresponding to the mode 3 in the step S602
  • the preemption information and the SCI are distinguished
  • different scrambling sequences are used to distinguish the two.
  • the second communication device attempts to perform blind solution with different scrambling sequences respectively, and if the SCI scrambling sequence is used, the blind solution is successful (for example, the cyclic redundancy check is adopted).
  • CRC cyclic redundant check
  • the scrambling sequence of the preemptive information is successfully blinded (such as through the CRC check)
  • the application is interpreted according to the format of the preemption information.
  • the embodiment does not specifically limit this.
  • the method for transmitting the preemptive information provided in the embodiment of the present application may further include: The second communication device jointly decodes the data on the first resource and the data on the reserved resource according to the second indication information.
  • the method for transmitting the preemptive information provided in the embodiment of the present application may further include The second communication device separately decodes the data on the first resource and the data on the reserved resource according to the second indication information.
  • step S605 of the embodiment of the present application :
  • the second communication device needs to listen in the [n-1000, n-1] range (listening window), and according to the interception result, Resource selection is performed in the range of [n+T1, n+T2] (resource selection window).
  • the second communication device performs resource evasion on the first resource according to the preemption information, which may include: determining, by the second communication device, the first resource and the second communication device according to the preemption information.
  • the third resource in the set of candidate resources has an overlap; the second communication device excludes the third resource from the set of candidate resources. For example, as shown in FIG. 33, when the second communication device learns that the third resource in the resource selection window overlaps with the first resource, the third resource is directly excluded from the candidate resource set.
  • overlap between the first resource and the third resource in the implementation of the present application may be partially overlapped or may be overlapped.
  • the second communication device performs resource evasion on the first resource according to the preemption information, which may include: determining, by the second communication device, the preemption information.
  • the third resource overlaps with the first resource; the second communication device stops transmitting data on the third resource. That is to say, even if the second communication device has selected the third resource, it continues to detect the monitoring preemption information.
  • the second communication device stops transmitting data on the third resource.
  • the third resource in this case is usually a reserved resource, which is uniformly described herein, and is not described here.
  • the method for transmitting the preemptive information provided by the embodiment of the present application may further include: determining, by the second communications device, that the number of times that the resource occupied by the second communications device is continuously preempted is greater than or equal to a preset threshold; select.
  • the preemption information includes the number of times the first communication device is expected to be occupied 4 times, and the preset threshold is 3, that is, the second communication device determines that the number of resources occupied by the second communication device is continuously preempted is greater than a preset threshold, then The communication device needs to perform resource selection again; or, for example, if the preemption information includes the number of times the first communication device is expected to be occupied 4 times, the preset threshold is 4, that is, the second communication device determines that the resource occupied by the second communication device is If the number of consecutive preemptions is equal to the preset threshold, the second communication device needs to perform resource selection again. By reselecting the resources, the service interruption caused by the second communication device waiting for a long time can be avoided, and the reliability of the data transmission of the second communication device is improved.
  • the second communication device determines the third resource according to the preemption information, If the first resource is overlapped, and the number of times the first communication device is expected to be preempted is less than the preset threshold, the second communication device does not use the third resource to send data, and then sends the data to the reserved resource in the next cycle. data.
  • the second communication device in a case where the second communication device has selected the third resource and the third resource is a reserved resource, if the second communication device determines the third according to the preemption information, The resource overlaps with the first resource, and the number of times the first communication device is expected to preempt is three times, which is greater than or equal to the preset threshold, and the second communication device is triggered to perform resource reselection.
  • the second communication device may perform resource reselection when the number of times that the resource occupied by the second communication device is continuously preempted is greater than or equal to a preset threshold, for example, obtaining preemption information, according to After the preemption information is known to be the number of times the first communication device is expected to be occupied, the second communication device may know that the occupied resources have been continuously preempted for more than the number of times the second communication device is not aware of the expected number of occupations by the first communication device.
  • the resource reselection is performed when the threshold is equal to or equal to the preset threshold, which is not specifically limited in this embodiment.
  • the first communication device may send the preemption information indicating that the first resource is occupied by the first communication device to the second communication device after determining the first resource to be occupied, so that The second communication device can learn that the first resource is occupied by the first communication device, and then evades the first resource, so that when the first communication device has a burst service, the first communication device and the second communication device are selected to be the same.
  • the probability of resources thereby improving the reliability of bursty data transmission.
  • the action of the first communication device or the second communication device in the foregoing steps S601 to S605 can be performed by the processor 501 in the communication device 500 shown in FIG. 5 calling the application code stored in the memory 503, this embodiment There are no restrictions on this.
  • the embodiment of the present application discloses a method for transmitting preemption information, including: a first communication device determines a first resource to be occupied, and a second resource for sending preemption information, wherein the preemption information is used to indicate The first resource is occupied by the first communication device, and the time domain location of the second resource is before the time domain location of the first resource; the first communication device sends the preemption information to the second communication device on the second resource.
  • the second resource is a resource in the dedicated resource set for sending the preemption information; the first communications device determines the second resource used to send the preemption information, where the first communications device determines that the first communications device is available according to the first parameter. Sending a dedicated resource set of preemption information; the first communication device determines a second resource for transmitting preemption information from the set of dedicated resources.
  • the second resource is a resource in a reserved resource of the first communication device.
  • the second resource is a resource in a resource for transmitting the SCI.
  • the first terminal determines the first resource to be occupied, including: the first terminal according to the received service priority indicated by the SCI sent by other terminals, and other The resource indicated in the SCI sent by the terminal determines the first resource to be occupied.
  • the operation of the first communication device may refer to the operation of the first communication device in FIG. 6 and the related text description, and details are not described herein again.
  • the embodiment of the present application discloses a method for receiving preemption information, including: the second communication device receives the preemption information from the first communication device on the second resource, where the preemption information is used to indicate that the first resource is occupied by the first communication device, The time domain location of the second resource is before the time domain location of the first resource; and the second communication device performs resource avoidance on the first resource according to the preemption information.
  • the second communication device performs resource evasion on the first resource according to the preemption information, including: when the second communication device is performing resource selection, the second communication device determines, according to the preemption information, the first resource and the first The third resource in the set of candidate resources of the two communication devices overlaps; the second communication device excludes the third resource from the set of candidate resources.
  • the second communications device performs resource evasion on the first resource according to the preemption information, including: when the second communications device has selected the third resource, the second communications device determines the third according to the preempting information.
  • the resource overlaps with the first resource; the second communication device stops transmitting data on the third resource.
  • the method for receiving the preemptive information disclosed in the embodiment of the present application may further include: determining, by the second communications device, that the number of times that the resource occupied by the second communications device is continuously preempted is greater than or equal to a preset threshold; select.
  • the second resource is a resource in the dedicated resource set for sending the preemption information.
  • the method for receiving the preemptive information disclosed in the embodiment of the present application may further include: determining, by the second communications device, that the second communication device is configured to receive the preemption according to the first parameter.
  • the second resource is a resource in a reserved resource of the first communication device.
  • the reserved resource is further used to send the SCI, where the SCI includes the first indication information.
  • the method for receiving the preemption information disclosed in the embodiment of the present application may further include: determining, by the second communication device, that the second communication device is reserved according to the first indication information. Resources have preemptive information to send.
  • the SCI further includes a resource configuration parameter, where the resource configuration parameter includes: time domain location information of the second resource, frequency domain location information of the second resource, or at least one of a modulation and coding format MCS of the preemption information;
  • the communications device receives the preemption information from the first communications device on the second resource, including:
  • the second communication device receives the preemption information from the first communication device on the second resource according to the resource configuration parameter.
  • the second resource is a resource in a resource for transmitting the SCI.
  • the preemptive information includes the second indication information.
  • the method for receiving the preemptive information disclosed in the embodiment of the present application may further include: determining, by the second communications device, information on the second resource as the preemption information according to the second indication information.
  • the optional preemption information is scrambled by using a scrambling sequence different from the SCI.
  • the method for receiving preemptive information disclosed in the embodiment of the present application may further include: a scrambling sequence of the second communication device according to the information on the second resource, The information on the second resource is determined to be preemptive information.
  • the operation of the second communication device may refer to the operation of the second communication device in FIG. 6 and the related text description, and details are not described herein again.
  • the first communication device or the second communication device includes a hardware structure and/or a software module corresponding to each function.
  • the present application can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.
  • the embodiment of the present application may divide the function module by using the first communication device or the second communication device according to the foregoing method example.
  • each function module may be divided according to each function, or two or more functions may be integrated into one.
  • Processing module can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner.
  • FIG. 36 shows a schematic structural diagram of a first communication device 360.
  • the first communication device 360 may include, for example, a chip or a circuit in the terminal or the terminal, which is not specifically limited in this embodiment of the present application.
  • the first communication device 360 includes: a processing module 3601 and a transceiver module 3602.
  • the processing module 3601 is configured to determine a first resource to be occupied and a second resource for sending preemption information, where the preemption information is used to indicate that the first resource is occupied by the first communication device, and the time domain location of the second resource is in the first
  • the transceiver module 3602 is configured to send the preemption information to the second communication device on the second resource.
  • the second resource is a resource in the dedicated resource set for sending the preemption information; the processing module 3601 is specifically configured to: determine, according to the first parameter, a dedicated resource set that can be used to send the preemption information; A second resource for transmitting preemption information is determined in the set.
  • the second resource is a resource in a reserved resource of the first communications device.
  • the second resource is a resource in a resource used for sending the SCI.
  • the processing module 3601 is specifically configured to: determine, according to the received service priority indicated by the SCI sent by the other terminal and the resource indicated in the SCI sent by the other terminal, the first resource to be occupied.
  • the first communication device 360 is presented in a form that divides the various functional modules in an integrated manner.
  • a “module” herein may refer to a particular ASIC, circuitry, processor and memory that executes one or more software or firmware programs, integrated logic circuitry, and/or other devices that provide the functionality described above.
  • the first communication device 360 can take the form shown in FIG.
  • the processor 501 in FIG. 5 can execute the instruction by calling the computer stored in the memory 503, so that the first communication device 360 performs the transmission method of the preemptive information in the foregoing method embodiment.
  • the function/implementation process of the processing module 3601 and the transceiver module 3602 in FIG. 36 can be implemented by the processor 501 in FIG. 5 calling a computer execution instruction stored in the memory 503.
  • the function/implementation process of the processing module 3601 in FIG. 36 can be implemented by the processor 501 in FIG. 5 calling the computer execution instructions stored in the memory 503, and the function/implementation process of the transceiver module 3602 in FIG.
  • the communication interface 504 in 5 is implemented.
  • the memory 503 may be a memory unit within a chip or a circuit, such as a register, a cache, or the like.
  • the memory 503 may be a storage unit located outside the chip in the terminal, which is not specifically limited in this embodiment of the present application.
  • the first communication device provided by the embodiment of the present application can be used to perform the foregoing method for transmitting the preemptive information. Therefore, the technical effects of the foregoing method can be referred to the foregoing method embodiments, and details are not described herein again.
  • FIG. 37 shows a schematic structural diagram of a second communication device 370.
  • the second communication device 370 may include, for example, a chip or a circuit in the terminal or the terminal, which is not specifically limited in this embodiment of the present application.
  • the second communication device 370 includes a processing module 3701 and a transceiver module 3702.
  • the transceiver module 3702 is configured to receive preemption information from the first communication device on the second resource, where the preemption information is used to indicate that the first resource is occupied by the first communication device, where the time domain location of the second resource is in the first resource. Before the time domain location;
  • the processing module 3701 is configured to perform resource avoidance on the first resource according to the preemption information.
  • the processing module 3701 is specifically configured to: when the second communication device is performing resource selection, determine, according to the preemption information, that the first resource overlaps with the third resource in the candidate resource set of the second communication device.
  • the third resource is excluded from the set of alternate resources.
  • the processing module 3701 is specifically configured to: when the second communication device has selected the third resource, determine, according to the preemption information, that the third resource overlaps with the first resource; and stops on the third resource. send data.
  • processing module 3701 is further configured to determine that the number of times that the resource occupied by the second communication device is continuously preempted is greater than or equal to a preset threshold; and the processing module 3701 is further configured to perform resource selection again.
  • the second resource is a resource in a dedicated resource set for sending preemption information.
  • the processing module 3701 is further configured to determine, according to the first parameter, a dedicated resource set that can be used to receive the preemption information, where the dedicated resource set includes the second resource; the processing module 3701 is further configured to use the resource in the dedicated resource set. Preempt the preemption information.
  • the second resource is a resource in a reserved resource of the first communications device.
  • the reserved resource is further used to send the side-line control information SCI, where the SCI includes the first indication information, and the processing module 3701 is further configured to determine, according to the first indication information, that the reserved resource has the preemptive information transmission.
  • the optional SCI further includes a resource configuration parameter, where the resource configuration parameter includes: time domain location information of the second resource, frequency domain location information of the second resource, or at least one of the MCS of the preemption information; the transceiver module 3702 is specifically configured to: Obtaining preemption information from the first communication device on the second resource according to the resource configuration parameter.
  • the second resource is a resource in a resource used for sending the SCI.
  • the preemption information includes second indication information.
  • the processing module 3701 is further configured to determine, according to the second indication information, the information on the second resource as preemption information; or, correspondingly, the preemption information uses scrambling different from SCI. The sequence is scrambled; the processing module 3701 is further configured to determine, according to the scrambling sequence of the information on the second resource, the information on the second resource as preemption information.
  • the second communication device 370 is presented in a form that divides the various functional modules in an integrated manner.
  • a “module” herein may refer to a particular ASIC, circuitry, processor and memory that executes one or more software or firmware programs, integrated logic circuitry, and/or other devices that provide the functionality described above.
  • the second communication device 370 can take the form shown in FIG.
  • the processor 501 in FIG. 5 can execute the instruction by calling the computer stored in the memory 503, so that the second communication device 370 performs the transmission method of the preemptive information in the foregoing method embodiment.
  • the function/implementation process of the processing module 3701 and the transceiver module 3702 in FIG. 37 can be implemented by the processor 501 in FIG. 5 calling a computer execution instruction stored in the memory 503.
  • the function/implementation process of the processing module 3701 in FIG. 37 can be implemented by the processor 501 in FIG. 5 calling the computer execution instructions stored in the memory 503, and the function/implementation process of the transceiver module 3702 in FIG.
  • the communication interface 504 in 5 is implemented.
  • the memory 503 may be a memory unit in a chip or a circuit, such as a register, a cache, or the like.
  • the memory 503 may be a storage unit located outside the chip in the terminal, which is not specifically limited in this embodiment of the present application.
  • the second communication device provided by the embodiment of the present application can be used to perform the foregoing method for transmitting the preemptive information. Therefore, the technical effects of the foregoing method can be referred to the foregoing method embodiments, and details are not described herein again.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • a software program it 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.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server or data center via wired (eg coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device that includes one or more servers, data centers, etc. that can be integrated with the media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)) or the like.
  • a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
  • an optical medium eg, a DVD
  • a semiconductor medium such as a solid state disk (SSD)

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Abstract

La présente invention concerne, dans les modes de réalisation, un procédé, un dispositif et un système de transmission d'informations de préemption, permettant une fiabilité accrue de transmission de données de trafic en rafale. Le procédé comprend les étapes suivantes : un premier dispositif de communication détermine une première ressource à occuper et une seconde ressource utilisée pour transmettre des informations de préemption, les informations de préemption étant utilisées pour indiquer que la première ressource est occupée par le premier dispositif de communication et la position dans le domaine temporel de la seconde ressource arrive avant la position dans le domaine temporel de la première ressource ; et le premier dispositif de communication transmet les informations de préemption sur la seconde ressource à un second dispositif de communication.
PCT/CN2019/077015 2018-03-07 2019-03-05 Procédé, dispositif et système de transmission d'informations de préemption Ceased WO2019170084A1 (fr)

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