WO2020088392A1 - 数据传输方法和装置 - Google Patents

数据传输方法和装置 Download PDF

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Publication number
WO2020088392A1
WO2020088392A1 PCT/CN2019/113613 CN2019113613W WO2020088392A1 WO 2020088392 A1 WO2020088392 A1 WO 2020088392A1 CN 2019113613 W CN2019113613 W CN 2019113613W WO 2020088392 A1 WO2020088392 A1 WO 2020088392A1
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Prior art keywords
message
preempted
data
indication information
resource
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PCT/CN2019/113613
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English (en)
French (fr)
Inventor
王俊伟
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华为技术有限公司
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Publication of WO2020088392A1 publication Critical patent/WO2020088392A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1861—Physical mapping arrangements
    • 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
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals

Definitions

  • This application relates to the field of communications, and in particular to a data transmission method and device.
  • the minimum time scheduling unit is a transmission time interval (TTI) corresponding to a millisecond (ms) time length.
  • TTI transmission time interval
  • URLLC ultra-reliable and low-latency communications
  • a mini-slot includes one or more time-domain symbols, where the time-domain symbols may be orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbols, or single carrier frequency division multiple access (single carrier) frequency-division multiple access (SC-FDMA) symbol, where SC-FDMA is also called orthogonal frequency division multiplexing with conversion precoding (orthogonal frequency division multiplexing with transform precoding, OFDM with TP).
  • OFDM orthogonal frequency division multiplexing
  • SC-FDMA single carrier frequency division multiple access
  • SC-FDMA orthogonal frequency division multiplexing with conversion precoding
  • the corresponding time length is 0.5 ms; for a time slot with a subcarrier spacing of 60 kHz, the corresponding time length Then shortened to 0.125ms.
  • the enhanced mobile broadband (eMBB) service has a relatively large data volume, and the transmission rate is relatively high, it is not sensitive to delay.
  • the current new radio (NR) requires one-way 4ms to meet the service Therefore, a longer time scheduling unit is usually used for data transmission to improve transmission efficiency. For example, a time slot of 15 kHz subcarrier interval is used, corresponding to 14 OFDM symbols, and the corresponding time length is 1 ms.
  • the base station needs to send out URLLC service data as soon as possible.
  • URLLC service data can be sent directly, but the current system is busy, or the system has scheduled eMBB service, in order to avoid the URLLC service data delay is too large, the base station will be ready to transmit or is transmitting eMBB service
  • the transmission resources of data are preempted, that is, the sending of eMBB service data is stopped, and the URLLC service data is sent instead.
  • eMBB service resources are transmitted in time slot n, including eMBB control information and eMBB data information, and the eMBB control information is used to demodulate eMBB service data information; in time slots n + 1 is only used to transmit URLLC service resources.
  • the URLLC service resources also include URLLC control information and URLLC data information; between eMBB service data transmitted in time slot n and URLLC service data transmitted in time slot n + 1 No conflict, that is, no preemption occurs.
  • the present application provides a data transmission method and device, which can be used to solve the problem of how to deal with the problem of improving user satisfaction when the transmission resource is preempted by other business data.
  • the base station periodically sends a paging message to the terminal at a specific paging occasion.
  • the terminal When the terminal is in the idle state, it enters the sleep and power-saving state, and only receives the paging message when the paging opportunity comes.
  • the interval period at which the base station sends a paging message can reach tens of milliseconds or hundreds of millimeters.
  • the terminal When the base station's resources for sending paging messages are preempted by other services, the terminal must wait for the next paging occasion before it is possible to receive the paging message correctly. This will cause the terminal to receive a paging message at a longer interval and affect user experience.
  • an embodiment of the present application provides a data transmission method to solve the technical problem that affects user experience when a paging message sent by a base station is preempted by URLLC service data.
  • the execution subject of the method may be a terminal or a chip applied to the terminal. The method will be described below by taking the terminal as an execution subject for example.
  • the method includes: a terminal receives a system message from a network device, the system message includes first indication information, and the first indication information is used to indicate whether a common transmission resource is likely to be preempted; in the first Receiving the first message on the time domain resource; when the terminal fails to receive the first message on the first time domain resource, and the first indication information indicates that the common transmission resource has the possibility of being preempted , Receiving the first message on the second time domain resource.
  • the first message is a paging message or a broadcast message.
  • the preset time interval between the second time domain resource and the first time domain resource is less than a first threshold.
  • the first threshold is a paging cycle of the paging message.
  • the preset duration may be determined according to a protocol, or the preset duration may be configured by the base station and notified to the terminal through signaling.
  • part or all of the common transmission resource is used to transmit the first message.
  • the method effectively reduces The delay of transmitting the first message is improved, thereby improving the user experience.
  • the value of the first indication information includes a first value, and the first value is used to indicate that the common transmission resource is likely to be preempted, for example, the first value is TRUE.
  • the first indication information acquired by the receiving end includes the first value, it indicates that some or all of the common transmission resources used to transmit the first message may be preempted. If the first indication information does not include the first value, it indicates that there is no possibility of being preempted.
  • the value of the first indication information further includes a second value, and the second value is used to indicate the possibility that the common transmission resource is not preempted, for example, the second value is FALSE.
  • the first indication information includes one of a first value and a second value. If the content carried in the first indication information is the second value FALSE, it indicates that the public is used to transmit the first message. There is no possibility that some or all of the transmission resources will be preempted.
  • the first indication information is a first information element.
  • the method further includes: receiving second indication information from the network device, where the second indication information is used to indicate that the common transmission resource is Preemption. Further, the second indication information is used to indicate that the common transmission resource that transmitted the same type of message or data last time is preempted.
  • the terminal receives the second indication information sent by the network device to indicate that the transmission resource of the last transmission of the first message is preempted by other service data, so that when the terminal performs hybrid automatic retransmission request combination on the received data, It can discard the data on the preempted resources, prevent the data on the preempted resources from "polluting" the original business data, and avoid the demodulation errors caused by merging the wrong data.
  • This method improves the success rate of decoding the first message .
  • the method further includes: receiving third indication information from the network device, where the third indication information is used to indicate the preempted public transmission Resource block information of resources.
  • the resource block information includes time domain information, frequency domain information, or time domain information and frequency domain information. Further, the time domain information is used to indicate the frequency domain position of the preempted resource, and the time domain information is used to indicate the time domain position of the preempted resource.
  • the terminal receives the third indication information sent by the network device to indicate the time domain position and / or frequency domain position where the public transmission resource for the last transmission of the first message was preempted by other service data, so that the terminal When the HARQ merging of the data is performed, the data on the preempted resources can be discarded to prevent the data on the preempted resources from "polluting" the original service data, and the success rate of decoding the first message is improved.
  • the HARQ redundancy version number used by the first message received on the second time domain resource is 0 or 3, due to redundancy
  • the remaining version numbers 0 and 3 have self-decoding characteristics, that is, they can be decoded separately, and the performance of individual decoding is superior to other redundant versions, so the decoding performance is superior to other redundant versions.
  • an embodiment of the present application further provides a data transmission method.
  • the execution subject of the method may be a network device, such as a base station, or a chip applied to the network device. The method will be described below by taking a network device as an execution subject as an example.
  • the method includes: a network device sends a system message, where the system message includes first indication information, where the first indication information is used to indicate whether a common transmission resource is likely to be preempted; A message; when part or all of the transmission resources transmitting the first message are preempted, the first message is sent again on the second time domain resource, wherein the transmission resource transmitting the first message is the common Some or all of the transmission resources.
  • the first message is a paging message or a broadcast message.
  • the preset duration of the interval between the second time domain resource and the first time domain resource is less than a first threshold.
  • the first threshold is a paging cycle of the paging message.
  • the value of the first indication information includes a first value, and the first value is used to indicate that the common transmission resource is likely to be preempted.
  • the value of the first indication information further includes a second value, and the second value is used to indicate the possibility that the common transmission resource is not preempted.
  • the method further includes: the network device sends second indication information, where the second indication information is used to indicate that the common transmission resource is preempted.
  • the method further includes sending third indication information, where the third indication information is used to indicate resource block information of the preempted common transmission resource.
  • the HARQ redundancy version number used by the first message sent on the second time domain resource is 0 or 3.
  • the HARQ redundancy version number of the network device sending the broadcast message on the second time domain resource is 0 or 3.
  • an embodiment of the present application also provides a data transmission method, which is used to solve the problem that transmission resources are preempted when a network device sends a contention resolution message during a random access process.
  • the method may be executed by a terminal It can also be a chip applied to the terminal. The method will be described below by taking the terminal as an execution subject for example.
  • the method includes: a terminal receives a system message from a network device, the system message includes first indication information, and the first indication information is used to indicate whether a common transmission resource is likely to be preempted; in the first Receiving first data from the network device on the time-frequency resource, the first data being the initial transmission data of the contention resolution message; when the decoding of the contention resolution message fails, on the second time-frequency resource Receiving second data from the network device, the second data being retransmission data of the contention resolution message; processing the first data and the second data according to the first instruction information.
  • the value of the first indication information includes a first value, and the first value is used to indicate that the common transmission resource is likely to be preempted.
  • the value of the first indication information further includes a second value, and the second value is used to indicate the possibility that the common transmission resource is not preempted.
  • the method further includes: the terminal receives resource block information that may be preempted from the network device, and the terminal determines that the resource block that may be preempted is Whether there are overlapping resources between the first time-frequency resources: if there are overlapping resources, it means that the first time-frequency resources may be partially or fully preempted, and the terminal caches the data in the overlapping resources from the cache Discard or discard; if there are no overlapping resources, the terminal retains the first data received on the first time-frequency resource in the buffer.
  • the resource block information includes: time domain information, frequency domain information, time domain information, and frequency domain information. Further, the time domain information is used to indicate the frequency domain position of the preempted resource, and the time domain information is used to indicate the time domain position of the preempted resource.
  • processing the first data and the second data according to the first indication information includes: when the value of the first indication information is When the first value is taken, the first data is discarded so that the first data does not participate in HARQ merging, preventing data on resources that may be preempted from causing potential "pollution" to business data, thereby effectively improving the resolution of competition The success rate of decoding the message.
  • the HARQ redundancy version number used by the second data is 0 or 3.
  • the terminal indicates whether the currently transmitted data is likely to be preempted by acquiring the first indication information from the network device, and the initial transmission data of the contention resolution message in the random access process is
  • the base station sends the retransmission data of the contention resolution message to the terminal again, so that the terminal discards the data on the preempted resource during the data processing process to prevent the data on the preempted resource from "polluting" the service data The success rate of decoding the contention resolution message.
  • an embodiment of the present application further provides a data transmission method.
  • the execution subject of the method may be a terminal or a chip applied to the terminal. The method will be described below by taking the terminal as an execution subject for example.
  • the method includes: a terminal receives a system message from a network device, the system message includes fourth indication information, and the fourth indication information is used to indicate resource block information that may be preempted in a common transmission resource; at the first time frequency The first data from the network device is received on the resource, the first data is the initial transmission data of the contention resolution message; when the contention resolution message received on the first time-frequency resource fails to decode, the second data Receiving second data on the time-frequency resource, the second data being retransmission data of the contention resolution message; processing the first data and the second data according to the fourth instruction information.
  • the resource block information includes: time domain information, frequency domain information, time domain information, and frequency domain information. Further, the time domain information is used to indicate the frequency domain position of the preempted resource, and the time domain information is used to indicate the time domain position of the preempted resource.
  • the processing the first data and the second data according to the fourth indication information includes: the terminal determining the resource that may be preempted Whether there are overlapping resources between the block and the first time-frequency resource: if there are overlapping resources, it means that the first time-frequency resource may be partially or fully preempted, and the terminal removes the data from the overlapping resource from the cache or Discard; if there are no overlapping resources, the terminal retains the first data received on the first time-frequency resource in the buffer.
  • This method prevents the first data on the resources that may be preempted from participating in the HARQ merge of the contention resolution message, prevents the data on the resources that may be preempted from causing potential "pollution" to business data, and thus can effectively improve Solve the decoding success rate of the message.
  • the redundancy version of HARQ used by the second data is 0 or 3.
  • embodiments of the present application also provide a data transmission method.
  • the execution subject of the method may be a network device or a chip applied to the network device. The method will be described below by taking a network device as an execution subject as an example.
  • the method includes: a network device sends a system message, and the system message includes fourth indication information, and the fourth indication information is used to indicate resource block information that may be preempted in a common transmission resource; and sent on the first time-frequency resource
  • First data the first data is the initial transmission data of the contention resolution message; in the case of receiving a negative response from the terminal, the second data is sent to the terminal on a second time-frequency resource, the second The data is retransmission data of the contention resolution message, and the negative response indicates that the decoding of the first data failed.
  • an embodiment of the present application further provides a communication device, including a functional unit for performing the methods in the various implementation manners of the foregoing first aspect to fifth aspect.
  • the functional unit includes a receiving unit, a processing unit, and a sending unit.
  • a storage unit and the like may also be included.
  • an embodiment of the present application further provides a communication device.
  • the communication device includes a processor.
  • the processor is coupled to a memory.
  • the memory is used to store instructions.
  • the processor is used to execute the memory.
  • the instruction causes the communication device to execute the data transmission method in the various implementation manners of the foregoing first aspect to fifth aspect.
  • an embodiment of the present application further provides a computer-readable storage medium having instructions stored therein, and when the instructions run on a computer, various implementations of the foregoing first to fifth aspects are performed The data transmission method in the mode.
  • an embodiment of the present application further provides a computer program product.
  • the computer program product includes computer instructions. When the instructions are executed together, they can implement the various implementations of the foregoing first to fifth aspects. Data transmission method.
  • an embodiment of the present application further provides a chip system.
  • the chip system includes a processor and an interface circuit.
  • the interface circuit is coupled to the processor.
  • the processor is used to execute a computer program or instruction.
  • the interface circuit is used to communicate with other modules than the chip system.
  • the method and apparatus provided in the embodiments of the present application when the cell common transmission resource used to transmit the paging message or the broadcast message is preempted for transmitting the URLLC service, by carrying the preemption indication in the system message, and proactively responding to the paging message Or broadcast the message for retransmission.
  • this method avoids that the "contaminated" data transmitted initially affects the decoding of paging messages or broadcast messages by the terminal, and improves the decoding success rate; Call messages or broadcast messages, thereby effectively reducing the transmission delay of paging messages or broadcast messages, and improving user experience.
  • FIG. 1 is a schematic diagram of a transmission resource of eMBB service data and a transmission resource of URLLC service data provided by this application;
  • FIG. 2 is a schematic structural diagram of an applied mobile communication system provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of sending a paging message at a paging occasion provided by an embodiment of the present application
  • FIG. 4 is a schematic flowchart of a data transmission method according to an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of sending a paging message according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of indicating resource block information provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a hardware device according to an embodiment of the present application.
  • the technical solution of the present application can be applied to various mobile communication systems, for example, a new radio (NR) system in the fifth generation (5G) mobile communication system or a future mobile communication system, this application There are no restrictions on this.
  • NR new radio
  • 5G fifth generation
  • FIG. 2 is a schematic structural diagram of a mobile communication system applied in an embodiment of the present application.
  • the mobile communication system includes a core network device, a radio access network device, and at least one terminal (such as terminal 1 and terminal 2 in FIG. 2).
  • the terminal is connected to the wireless access network device in a wireless manner
  • the wireless access network device is connected to the core network device in a wireless or wired manner.
  • the core network device and the wireless access network device may be independent and different physical devices, or they may integrate the functions of the core network device and the logical function of the wireless access network device on the same physical device, or may be a physical device It integrates the functions of some core network devices and some of the wireless access network devices.
  • the terminal may be fixed or mobile.
  • the communication system shown in FIG. 2 may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG. 2.
  • the embodiments of the present application do not limit the number of core network devices, wireless access network devices, and terminals included in the mobile communication system.
  • the wireless access network device is an access device in which the terminal accesses the mobile communication system in a wireless manner, and may be a base station NodeB, an evolved base station (evolved NodeB, eNodeB), a transmission and reception point (TRP), 5G
  • the base station in the mobile communication system, the base station in the future mobile communication system, or the access node in the WiFi system, etc., the embodiments of the present application do not limit the specific technology and the specific device form adopted by the wireless access network device.
  • the wireless access network equipment is referred to as network equipment for short. Unless otherwise specified, in this application, network equipment refers to wireless access network equipment.
  • the terminal may also be referred to as terminal equipment, user equipment (UE), mobile station (MS), mobile terminal (MT), etc.
  • the terminal can be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal device, industrial control (industrial wireless terminal in control, wireless terminal in self-driving, wireless terminal in remote surgery, wireless terminal in smart grid, and transportation terminal in transportation safety Wireless terminals, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • the embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal.
  • network equipment and terminals can be deployed on land, including indoor or outdoor, handheld or in-vehicle; they can also be deployed on the water; they can also be deployed on airplanes, balloons and artificial satellites in the air.
  • the embodiments of the present application do not limit the application scenarios of the network device and the terminal.
  • Network devices and terminals can communicate through licensed spectrum (licensed spectrum), unlicensed spectrum (unlicensed spectrum), or both licensed spectrum and unlicensed spectrum.
  • Network devices and terminals can communicate through the spectrum below 6 gigahertz (GHz), or through the spectrum above 6 GHz, and can also use the spectrum below 6 GHz and the spectrum above 6 GHz for communication.
  • GHz gigahertz
  • the embodiments of the present application do not limit the spectrum resources used between the network device and the terminal.
  • the network device is used as the base station and the terminal is used as the UE as an example to explain each technical solution.
  • the technical solution provided by the embodiments of the present application aims to deal with the situation that the common transmission resource may be preempted by other service data, and process the data transmitted on the common transmission resource, thereby reducing the common transmission resource when the transmission resource is preempted
  • the impact of the transmitted data improves the efficiency of transmitting data on public transmission resources.
  • the common transmission resource may be used to transmit paging messages, system messages or conflict resolution messages.
  • the service data preempting the common transmission resource may be URLLC service data or other service data, which is not limited in the embodiment of the present application.
  • the UE When the UE is in the idle state, the UE needs to periodically receive the paging message sent by the base station.
  • the "period" in the paging message sent periodically by the base station can be called the paging cycle and is denoted by T.
  • the paging cycle T may be a discontinuous reception cycle of the idle UE.
  • the paging occasion (PO) at which the UE receives the paging message can be determined according to the protocol. Among them, PO is the paging moment when the base station sends a paging message.
  • the paging message may also be called paging information.
  • a radio frame with frame number 0 is a paging radio frame 0
  • the paging radio frame 0 Including 10 timeslots with timeslot numbers 0-9, each timeslot can be called a paging occasion.
  • the time slot 4 of the paging radio frame of each paging cycle T is set as the paging occasion of UE1, which is used to send a paging message to UE1. That is, the paging occasion that the base station sends to UE1 in each paging cycle T can only be the time slot 4 of the paging radio frame, where the paging radio frame can be paging radio frame 0 in FIG. 3 or it can be Page radio frame 4. During this period, the base station needs to have a paging cycle T between the time slot 4 of the first paging and the time slot 4 of the second paging.
  • the paging radio frame n in the present application represents a paging radio frame with frame number n
  • the time slot m represents a time slot with time slot number m
  • n and m are both non-negative integers.
  • the UE When the transmission resource of the base station sending the paging message in the time slot 4 of the paging radio frame 0 is preempted by the URLLC service data, the UE must wait until the next paging occasion, that is, when the time slot 4 of the paging radio frame 4 arrives Receiving the paging message again will increase the paging delay and affect the user's experience.
  • This embodiment provides a data transmission method, which is used to solve the problem that when the transmission resource for sending a paging message or broadcast message is preempted by the URLLC service, the time interval for the UE to receive the paging message or broadcast message again is long.
  • the method includes:
  • the base station sends a system message to the UE.
  • the UE receives the system message from the base station.
  • the system message includes first indication information, and the first indication information is used to indicate whether a common transmission resource may be preempted.
  • the common transmission resource refers to: a physical resource used by the base station to send common data or messages, and may specifically include time domain resources, frequency domain resources, time frequency resources, and frequency domain resources.
  • the public data or message may include: a paging message, a broadcast message, or a message during random access.
  • the first indication information is used to indicate whether the public transmission resource may be preempted by URLLC service data, specifically including the following two cases:
  • the base station When the base station receives the service data of the URLLC terminal, if there is no transmission resource that can be used to transmit the service data of the URLLC terminal, the base station may use the allocated common transmission resources for transmitting public data to transmit the URLLC terminal. Business data, this process is called public transmission resources are preempted.
  • the base station may receive the service data of the URLLC terminal at any time, that is to say, public transmission resources may be seize.
  • the URLLC terminal may be understood as a terminal that initiated a URLLC service session.
  • the value of the first indication information includes a first value, and the first value is used to indicate that the common transmission resource is likely to be preempted. If the first indication information is not included in the system message, it indicates that there is no possibility that the common transmission resource is preempted. Optionally, the content of the first value is "TRUE".
  • the first indication information includes a first value and a second value, and the first value is used to indicate that the common transmission resource is likely to be preempted;
  • the second value is used to indicate the possibility that the common transmission resource is not preempted.
  • the first value content is "TRUE” and the second value content is "FALSE”; or the first value content is "FALSE” and the second value content is "TRUE”.
  • the specific manner in which the base station sends the system message in step 101 may be broadcast, that is, the base station sends the system message to all UEs within the coverage of a cell of the base station.
  • system message is system message block type 1 (system information block type 1, SIB1).
  • the base station sends the first message to the UE on the first time domain resource.
  • the first message is a paging message or a broadcast message.
  • the broadcast message may also be called broadcast information.
  • the first time domain resource may be a certain time slot. Specifically, when the first message is a paging message, the first time domain resource is the paging occasion, such as time slot 4 in paging radio frame 0 in FIG. 3, or paging radio Time slot 4 of frame 4. When the first message is a broadcast message, the first time domain resource is a certain moment in the broadcast message sending cycle.
  • the paging message sent by the base station includes control information and data information, and the control information is used to indicate demodulation and decoding of data.
  • the base station sends the broadcast message in each broadcast message transmission period.
  • the broadcast message may specifically be a broadcast control channel (broadcast control channel, BCCH).
  • BCCH broadcast control channel
  • the base station will send the BCCH transmission packet multiple times, and the receiving end will receive the BCCH transmission packet broadcast by the base station each time, demodulate and decode the information of these BCCH transmission packets, and finally merge to obtain complete information.
  • the base station When part or all of the transmission resources for transmitting the first message are preempted, the base station sends the first message to the UE on the second time domain resource. Wherein, the transmission resources for transmitting the first message are some or all of the common transmission resources.
  • the UE when the UE fails to receive the first message on the first time domain resource, and the first indication information indicates that the common transmission resource is likely to be preempted, the UE is in the second time Receiving the first message on a domain resource.
  • the UE determines whether the first indication information indicates that the common transmission resource has the possibility of being preempted, reference may be made to the related description in 101 above.
  • the preset time interval between the second time domain resource and the first time domain resource is less than the first threshold.
  • the first threshold is a paging cycle of the paging message.
  • the preset duration may be one or more time slots.
  • the paging message sent by the base station to the UE in the time slot 4 of the paging radio frame 0 is preempted by the URLLC service data, then the base station paging the time slot 7 of the paging radio frame 0 after two time slots apart Sending the paging message to the UE.
  • the first time domain resource is the time slot 4 of the paging radio frame 0
  • the second time domain resource is the time slot 7 of the paging radio frame 0
  • the preset duration is two time slots.
  • the first threshold is the paging cycle T.
  • the base station may also select any timing within the time window of time slot 5 to time slot 9 of the paging radio frame 0 to send the paging message to the UE again.
  • the UE can receive the paging message at the corresponding paging occasion.
  • the preset duration for example, the number of time slots in the interval may be pre-defined by the protocol, or may be configured by the base station as a parameter to the UE, which is not limited in this application.
  • the first time domain resource in this application may be referred to as a first paging occasion
  • the second time domain resource may be referred to as a second paging occasion or an alternative paging occasion.
  • the second time domain resource is a time slot after one broadcast period.
  • the base station can use different hybrid automatic repeat request (HARQ) redundancy versions.
  • the redundancy version can be transmitted through the physical downlink control channel (PDCCH) in the physical downlink control channel (PDCCH).
  • Downlink control information (downlink control Information, DCI) to indicate.
  • DCI downlink control Information
  • the HARQ redundancy version number used by the broadcast message sent by the base station on the second time domain resource is 0 or 3.
  • Data transmitted using redundant version numbers 0 and 3 has a self-decoding feature, that is, it can be decoded independently without relying on initial transmission data.
  • step 103 includes the following:
  • the preempted may be understood as: (1) The UE does not detect the control channel that schedules the first message in the first time domain resource, that is, the control channel that sends the first message The resource is preempted; (2) The UE detects the control channel of the first message on the first time domain resource, but the decoding of the first message fails, which can be understood as the resource of the data channel transmitting the first message is preempted.
  • the preempted may be understood as: (2) The UE detects the control channel of the first message on the first time domain resource, but the decoding of the first message fails, It can be understood that the resources of the data channel transmitting the first message are preempted.
  • the preemption indication is carried in the system message, and the paging message or the broadcast message is actively replayed. Transmission, thereby avoiding that the terminal needs to wait for a long time before correctly receiving the paging message or the broadcast message again, thereby effectively reducing the waiting time and improving the user experience.
  • the above method includes:
  • the base station sends second indication information to the UE.
  • the UE receives the second indication information from the base station.
  • the second indication information is used to indicate that the common transmission resource is preempted. Specifically, it can be understood that the second indication information is used to indicate that “the possibility of being preempted” indicated by the first indication information becomes already preempted.
  • the value in the second indication information is "Y" or the value is 1.
  • the second indication information may also be used to indicate that “the possibility of being preempted” indicated by the first indication information is not actually preempted, for example, the value of the second indication information is “N "Or the value is 0.
  • the above method includes:
  • the base station sends third indication information to the UE.
  • the UE receives the third indication information from the base station.
  • the third indication information is used to indicate resource block information of the preempted common transmission resource.
  • the resource block information of the common transmission resource includes: time domain information, frequency domain information, time domain information, and frequency domain information, where the time domain information is used to indicate the time domain location of the preempted resource, and the frequency The domain information is used to indicate the frequency domain position of the preempted resource.
  • both the time domain information and the frequency domain information occupy 2 bits.
  • the above steps 104 and 105 may be two parallel schemes, that is, the base station may only send the second indication information, or may also send only the third indication information.
  • the base station only sends the third indication information
  • the situation that the common transmission resource is indeed "preempted” is expressed by directly indicating the time domain and / or frequency domain position of the preempted common transmission resource.
  • the value of the third indication information is "all 0s”
  • the value of the third indication information is not "all 0s”
  • the second indication information or the third indication information may be carried by the first message sent on the second time domain resource.
  • the paging message or broadcast message sent by the base station on the second time domain resource includes the second indication information or the third indication information.
  • the broadcast message sent by the base station on the first time domain resource can use any HARQ redundancy version number, for example, Use any one of the redundant version numbers 0 to 3.
  • the UE detects the control channel of the first message on the first time domain resource, but the decoding of the data channel of the first message fails, possibly because the resource of the data channel transmitting the first message is URLLC Service data preemption may also be due to the failure of decoding due to the fading of the wireless channel or interference from neighboring cells.
  • the UE may cache the data received on the first time domain resource in the HARQ cache, so as to merge with subsequent retransmission data, thereby improving the success rate of decoding after the retransmission.
  • the UE may discard the initial transmission data of the first message buffered in the HARQ buffer. If the UE receives the third indication information, specifically indicating the resource block information of the preempted common transmission resource, the UE may discard the data transmitted through the preempted resource block in the HARQ buffer. Discarding the data transmitted on the preempted resource block in the HARQ cache can avoid the URLLC service data transmitted on the preempted resource from "polluting" the data of the first message, thereby improving the success rate of decoding the first message.
  • the first transmission data of the first message in the HARQ buffer may be HARQ merged with the retransmission data of the subsequent first message, because the first message The transmitted data is not "contaminated".
  • the time domain information and / or frequency domain information indicated by the third indication information may be implemented in the following manner:
  • Time domain information can be indicated by 2bit, for example, setting “00” means that the common transmission resource is not preempted; “10” means that the left half of the common transmission resource is preempted; “01” means the right of the common transmission resource Half of it is preempted; "00” means that all public transmission resources are preempted.
  • the frequency domain information can also be indicated by 2bits. For example, setting “00" indicates that the common transmission resource is not preempted; “10” indicates that the upper half of the common transmission resource is preempted; “01” indicates the common transmission resource. The lower half is preempted; "00" indicates that all public transmission resources are preempted.
  • the time domain range corresponding to the common transmission resource is from symbol 0 to symbol 13
  • the corresponding frequency domain range is from physical resource block (PRB) 1 to PRB6.
  • the shaded area in FIG. 6 is the preempted public transmission resources, that is, the time domain range corresponding to the preempted public transmission resources is from symbol 0 to symbol 6, and the corresponding frequency domain range is from PRB1 to PRB6.
  • the frequency domain information and the time domain information indicated in the third indication information may be: the value of the time domain information is "10" and the value of the frequency domain information is "10".
  • the symbols in the embodiments of the present application all refer to time domain symbols.
  • the time-domain symbols in this application may be orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbols, or single carrier frequency division multiple access (single carrier frequency division multiple access, SC-FDMA) symbols, where SC-FDMA is also known as orthogonal frequency division multiplexing with conversion precoding (orthogonal frequency division multiplexing with transform precoding, OFDM with TP).
  • OFDM orthogonal frequency division multiplexing
  • SC-FDMA single carrier frequency division multiple access
  • SC-FDMA orthogonal frequency division multiplexing with conversion precoding
  • m in “symbol m" represents the index or number of the symbol
  • m in "slot m" represents the index or number of the time slot.
  • a data transmission method is also provided, which is used to solve the problem that contention transmission resources of the message are preempted during the random access process of the UE.
  • the random access process includes:
  • Step 1 The UE sends a message (MSG) 1 to the base station.
  • the UE randomly selects a preamble sequence and sends MSG1 on a random access channel (RACH). After the UE sends the preamble sequence, it receives a random access response (RAR) message, also known as MSG2, within a time window. If the base station receives MSG2 within the time window, it proceeds to step 3; Otherwise continue to step 1.
  • RACH random access channel
  • Step 2 The base station sends a RAR message to the UE.
  • the base station After detecting that a preamble sequence is sent, the base station sends a random access response in the downlink.
  • the random access response should contain at least the following information: the number of the received preamble sequence, timing adjustment information, and the location indication of the uplink resource allocated to the UE Information, temporarily assigned cell radio network temporary identifier (cell radio network temporary identifier, C-RNTI).
  • Step 3 The UE sends MSG3 to the base station.
  • the UE After receiving the random access response, the UE sends an uplink message to the base station on the uplink resources allocated by the base station. This message is also called MSG3.
  • Step 4 The base station sends a contention resolution message to the UE, namely MSG4.
  • the base station After receiving the MSG3 sent by the UE, the base station returns MSG4 to the UE that has successfully accessed. If the UE receives the control information of MSG4, but the data decoding fails, the UE feeds back a negative acknowledgement (NACK) to the base station, requesting the base station to resend MSG4.
  • NACK negative acknowledgement
  • the UE When the resources for transmitting MSG4 during the random access process are preempted by the URLLC service, the UE cannot complete the random access in time, and will also participate in the combined decoding of the retransmitted data due to the "contaminated" data, resulting in the decoding of the retransmitted data failure.
  • this embodiment provides a data transmission method. As shown in FIG. 8, the method includes:
  • the base station sends a system message to the UE.
  • the UE receives the system message from the base station.
  • the system message includes first indication information, where the first indication information is used to indicate whether the public transmission resource has the possibility of being preempted.
  • first indication information is used to indicate whether the public transmission resource has the possibility of being preempted.
  • the base station periodically sends system messages, and each system message includes the first indication information, which is used to indicate whether the common transmission resource at the current moment is likely to be preempted.
  • the UE periodically receives system messages sent by the base station, and each of the system messages carries first indication information.
  • the UE in this application includes a connected state UE, an idle state UE, or an inactive state UE.
  • the system message includes fourth indication information, and the fourth indication information is used to indicate resource block information that may be preempted in the common transmission resource.
  • the resource block information includes time domain information, frequency domain information, time domain information, and frequency domain information, and can be used to indicate the time domain resource location and frequency domain resource location that may be preempted. It can be understood that the resource block information that may be preempted may also be carried on messages or signaling other than system messages.
  • the design of the fourth indication information can be directly obtained by referring to the method for designing the third indication information in the foregoing embodiment, and details are not described here.
  • the base station sends the first data to the UE on the first time-frequency resource.
  • the UE receives the first data from the base station on the first time-frequency resource.
  • the first data is the initial transmission data of the contention resolution message, for example, the contention resolution message is MSG4.
  • step 301 and step 302 also include a base station random access process, such as the transmission process of MSG1, MSG2, and MSG3.
  • a base station random access process such as the transmission process of MSG1, MSG2, and MSG3.
  • the UE may feed back a NACK to the base station.
  • the UE When the UE fails to decode the data channel of the first data, it may not feedback NACK to the base station or any other information to the base station; only when the UE decodes the data channel of the first data When it is correct, an acknowledgement (acknowledge, ACK) is fed back to the base station.
  • an acknowledgement (acknowledge, ACK) is fed back to the base station.
  • the base station if the base station does not receive the information fed back by the UE within a certain period of time after sending the first data, the base station will consider that the UE has not correctly received the first data.
  • the UE may cache the received first data in the corresponding HARQ buffer, so as to facilitate HARQ combining with subsequent retransmitted data.
  • the failure to decode the data channel of the first data may be due to the resource that transmits the first data being preempted by the URLLC service data, or it may be caused by the fading of the wireless channel or the interference of the neighboring cell.
  • the base station When the base station receives the NACK fed back by the UE, it sends second data to the UE on the second time-frequency resource. Correspondingly, when the UE fails to decode the contention resolution message received on the first time-frequency resource, the UE receives the second data on the second time-frequency resource.
  • the second data is retransmission data of the contention resolution message, that is, MSG4 retransmission data.
  • the NACK is used to indicate that the first data decoding failed.
  • the second data is also sent on the second time-frequency resource.
  • the HARQ redundancy version number used by the base station to send the second data on the second time-frequency resource may be 0 or 3. If the first time-frequency resource for transmitting the first data is not preempted by other service data, the HARQ redundancy version number used by the base station to send the second data to the UE may be unlimited, and the corresponding redundancy version number may be 0, 1 , 2 or 3.
  • the base station may notify the UE of the redundancy version number through the DCI in the PDCCH.
  • the UE processes the first data and the second data according to the first indication information or the fourth indication information.
  • the UE processes the first data and the second data according to the first indication information. Specifically, when the value of the first indication information is the first value, the first data is discarded, so that the first data does not participate in HARQ merging, so as to avoid "pollution" of the second data by the preempted data , Thereby affecting the decoding of the second data; when the system message does not include the first indication information or the first indication information is the second value, the first data is retained, and the first data and the second data are processed After the HARQ is merged, the contention resolution message is decoded.
  • the UE processes the first data and the second data according to the fourth indication information. Specifically, the UE determines whether there are overlapping resources between the resource block that may be preempted and the first time-frequency resource: if there are overlapping resources, it indicates that the first time-frequency resource may be partially or fully preempted, then The UE removes or discards the data in the overlapping resources from the cache; if there are no overlapping resources, the terminal retains the first data received on the first time-frequency resource in the cache and replaces the first data After the HARQ combination of the first data and the second data, the contention resolution message is decoded.
  • the base station may notify the UE of the first time-frequency resource and the second time-frequency resource through the DCI in the PDCCH.
  • the UE may determine that the first time-frequency resource is preempted before receiving the second data; or, the UE may determine the first time-frequency resource after receiving the second data. Time-frequency resources are preempted. This embodiment does not specifically limit the time point when the UE judges that the first time-frequency resource is preempted.
  • This embodiment may further include step 104 or 105 in FIG. 4 so that the UE can know that the common transmission resource is preempted by receiving the second indication information from the base station; or the UE can receive the third indication information from the base station To know the resource block information of the preempted common transmission resource.
  • the base station when the resources used to transmit the contention resolution message during the random access process are preempted by other service data, the base station retransmits the contention resolution message and indicates that the common transmission resource may be preempted or may be preempted Information; or specifically indicating that the public transmission resource has been preempted or resource block information that has been preempted, so that the initial transmission data of the contention resolution message in this scenario does not participate in HARQ merger to avoid other services transmitted on the preempted transmission resource
  • the data "pollution" competes to resolve the retransmission data of the message.
  • the method can effectively improve the decoding success rate of the contention resolution message.
  • the data transmission method provided in this embodiment can be applied not only to the processing when the transmission resources of MSG4 are preempted, but also to the processing when the transmission resources of MSG2 are preempted during the random access process.
  • the base station may perform the second transmission of MSG2.
  • the UE fails to decode the service data of MSG2, it continues to detect and receive MSG2 until the UE receives the data of MSG2 or the end of the listening window time of MSG2.
  • Whether the initial transmission data of MSG2 participates in HARQ merging can be determined according to one or more of the first indication information, the second indication information, the third indication information, and the fourth indication information.
  • the public transmission resources described in the embodiments of the present application are preempted by other service data, which may be URLLC service data preempting transmission resources of paging messages, system messages, and contention resolution messages, or URLLC.
  • the service data preempts the transmission resources of the eMBB service data, or it can be the high-priority service of the same service type to preempt the transmission resource of the low-priority service.
  • the situation that the common transmission resource is preempted can be extended to the scenario where the base station does not successfully send data due to various reasons, while being preempted can be understood as that the base station cannot Send predetermined data on a predetermined time-frequency resource, for example:
  • Some time slots or symbols in the time domain resource used to transmit downlink data are changed to uplink time slots or symbols, so that the base station cannot send data to the UE.
  • the mechanism stipulates that the base station can send data to the UE only when the channel listening result is idle, if the channel listens If the result of is not idle, data cannot be sent, and in the case that the interception result is not idle, the base station cannot obtain unlicensed spectrum resources within a predetermined time, which results in the base station being unable to send data to the UE.
  • FIG. 9 it is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • the device may be the terminal in the foregoing embodiment, or may be a chip applied to the terminal, for implementing the data transmission method shown in FIG. 4 in the foregoing method embodiment.
  • the communication device includes a receiving unit 901 and a processing unit 902.
  • the receiving unit 901 is configured to receive a system message from a network device, where the system message includes first indication information, and the first indication information is used to indicate whether a common transmission resource may be preempted.
  • the receiving unit 901 is further configured to receive the first message on the first time domain resource; and, when the first message is not successfully received on the first time domain resource and the first indication information indicates The public transmission resource may be preempted, and the first message is received on the second time domain resource.
  • the processing unit 902 is configured to detect whether the first message is successfully received, and determine whether the common transmission resource is preempted according to the first indication information.
  • the first message is a paging message or a broadcast message.
  • the HARQ redundancy version number used by the first message received on the second time domain resource is 0 or 3.
  • the preset time interval between the second time domain resource and the first time domain resource is less than a first threshold.
  • the first threshold is a paging cycle of the paging message.
  • the receiving unit 901 is further configured to receive second indication information from the network device, and the second indication information is used to indicate the public transmission Resources are preempted.
  • the receiving unit 901 is further configured to receive third indication information from the network device, where the third indication information is used to indicate the preempted public Resource block information of transmission resources.
  • the communication device provided in this embodiment can also be used to implement the data transmission method shown in FIG. 8 of the embodiment of the present application.
  • the receiving unit 901 is used to receive a system from a network device Message, the system message includes first indication information, and the first indication information is used to indicate whether a common transmission resource may be preempted.
  • the value of the first indication information includes a first value, and the first value is used to indicate that the common transmission resource is likely to be preempted.
  • the value of the first indication information further includes a second value, and the second value is used to indicate the possibility that the common transmission resource is not preempted.
  • the receiving unit 901 is further configured to receive first data from the network device on the first time-frequency resource, and the first data is the initial transmission data of the contention resolution message; the processing unit 902 is configured to use the first time-frequency resource Detect whether the first data is received, and demodulate and decode the data information of the contention resolution message; the receiving unit 901 is also used when the processing unit 902 fails the contention resolution message When receiving the second data retransmitted by the network device on the second time-frequency resource, the second data is the retransmission data of the contention resolution message; the processing unit 902 is further used for Processing the first data and the second data.
  • the processing unit 902 is specifically configured to discard the first data when the value of the first indication information is the first value, only The second data is demodulated and decoded so that the first data does not participate in HARQ merging.
  • the apparatus further includes a sending unit 903, and the sending unit 903 is configured to send a NACK to the base station when the processing unit 902 detects an error in decoding the first data .
  • the contention resolution message in the random access process is preempted by other services, the contention resolution message retransmitted is received, so that the terminal will be the first in the first transmission in the process of demodulating and combining data
  • the cache data corresponding to the data is cleared to avoid "polluting" other correctly received data.
  • the apparatus is further configured to: receive a system message from a network device, where the system message includes fourth indication information, and the fourth indication information is used to indicate a common transmission resource Resource block information of transmission resources that may be preempted; receiving first data from the network device on the first time-frequency resource, where the first data is the initial transmission data of the contention resolution message; when in the first time-frequency resource Under the condition that the received contention resolution message is decoded incorrectly, receive second data on the second time-frequency resource, and the second data is retransmission data of the contention resolution message; The first data and the second data are processed.
  • the resource block information includes: time domain information, frequency domain information, time domain information and frequency domain information, the time domain information is used to indicate the frequency domain position of the preempted resource, and the time domain information is used to indicate The time-domain location of the preempted resource.
  • the processing of the first data and the second data according to the fourth indication information includes: the terminal determining whether there are overlapping resources between the resource block that may be preempted and the first time-frequency resource : If there are overlapping resources, it means that the first time-frequency resources may be partially or fully preempted.
  • the terminal deletes or discards the data in the overlapping resources from the cache; if there are no overlapping resources, the terminal keeps in the cache Receiving the first data on the first time-frequency resource, so that the first data on the resource that may be preempted does not participate in the HARQ merge of the contention resolution message, and prevents data on the resource that may be preempted Potential "pollution" of business data, which can effectively improve the success rate of decoding of competitive resolution messages.
  • the redundancy version of HARQ used by the second data is 0 or 3.
  • an embodiment of the present application further provides a communication device, which may be the network device in the foregoing embodiment, or may be a chip applied to the network device for implementing the method shown in FIG. 4 in the foregoing method embodiment. Data transmission method.
  • the communication device further includes a sending unit 903.
  • the sending unit 903 is configured to send a system message, where the system message includes first indication information, and the first indication information is used to indicate whether a common transmission resource may be preempted.
  • the sending unit 903 is also used to send the first message on the first time domain resource; the processing unit 902 is used to determine whether the common transmission resource is preempted according to the first indication information; the sending unit 903 is also used to transmit When all or part of the transmission resources of the first message are preempted, the first message is sent on the second time domain resource, and the transmission resources of the first message are some or all of the common transmission resources.
  • the first message is a paging message or a broadcast message.
  • the preset time interval between the second time domain resource and the first time domain resource is less than a first threshold.
  • the first threshold value is a paging cycle of the paging message.
  • processing unit 902 and the sending unit 903 reference may be made directly to the related description of the network device in the method embodiment described in FIG. 4, such as the UE, and details are not described here.
  • the device provided in this embodiment may also be used to implement the data transmission method shown in FIG. 8 in the embodiment of the present application.
  • the sending unit 903 is used to send a system message, the system The message includes first indication information, and the first indication information is used to indicate whether the common transmission resource may be preempted.
  • the sending unit 903 is further configured to send first data on the first time-frequency resource, where the first data is the initial transmission data of the contention resolution message; and, when receiving the NACK feedback from the UE, on the second time-frequency resource Sending second data to the UE, where the second data is retransmission data of the contention resolution message.
  • the value of the first indication information includes a first value, and the first value is used to indicate that the common transmission resource is likely to be preempted.
  • the value of the first indication information further includes a second value, and the second value is used to indicate the possibility that the common transmission resource is not preempted.
  • the HARQ redundancy version number used by the second data is 0 or 3.
  • an embodiment of the present application further provides a hardware device, which is used to implement the data transmission method described in the foregoing embodiment.
  • the hardware device includes: a transceiver 1001 and a processor 1002.
  • the processor 1002 is used to perform the functions of the processing unit 902 described above, and the transceiver 1001 is used to perform the functions of the receiving unit 901 and the sending unit 903 described above.
  • the hardware device further includes a memory 1003, which is used to store various messages during transmission, and computer program instructions, etc.
  • the hardware device may be a chip system.
  • the chip system includes a processor and an interface circuit.
  • the interface circuit is coupled to the processor.
  • the processor is used to execute a computer program or instruction to implement The method in each of the foregoing embodiments; the interface circuit is used to communicate with other modules than the chip system.
  • the chip system may also be other devices or devices having the functions of the above-mentioned communication device.
  • processors in the embodiment of the present application may be a central processing unit (CPU), and may also be other general-purpose processors, digital signal processors (DSPs), and special-purpose integrated circuits. (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof.
  • a general-purpose processor may be a microprocessor or any conventional processor.
  • the transceiver 1001 may include components such as a receiver, a transmitter, and an antenna; used to receive various messages, such as system messages, paging messages, or broadcast information, and establish a communication connection with an external network device and perform data transmission. It can be understood that the transceiver 1001 may be a transceiver circuit or an input-output interface.
  • the transceiver 1001 may include a communication module such as a wireless local area network (WLAN) module, a Bluetooth module, a baseband module, and a radio frequency (RF) circuit corresponding to the communication module.
  • a communication module such as a wireless local area network (WLAN) module, a Bluetooth module, a baseband module, and a radio frequency (RF) circuit corresponding to the communication module.
  • WLAN wireless local area network
  • RF radio frequency
  • the transceiver module can support direct memory access.
  • the method steps in the embodiments of the present application may be implemented by hardware, or by a processor executing software instructions.
  • Software instructions can be composed of corresponding software modules, which can be stored in random access memory (random access memory, RAM), flash memory, read-only memory (read-only memory (ROM), programmable read-only memory (programmable ROM , PROM), erasable programmable read only memory (erasable PROM, EPROM), electrically erasable programmable read only memory (electrically EPROM, EEPROM), registers, hard disk, removable hard disk, CD-ROM or well-known in the art In any other form of storage medium.
  • RAM random access memory
  • ROM read-only memory
  • PROM programmable read-only memory
  • EPROM erasable programmable read only memory
  • electrically erasable programmable read only memory electrically EPROM, EEPROM
  • registers hard disk, removable hard disk, CD-ROM or well-known in the art In any other form of storage medium.
  • An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and can write information to the storage medium.
  • the storage medium may also be a component of the processor.
  • the processor and the storage medium may be located in the ASIC.
  • the ASIC may be located in a network device or a terminal device.
  • the processor and the storage medium may also exist as separate components in the sending device or the receiving device.
  • the embodiments of the present application also provide a computer program product.
  • the computer program product includes computer instructions. When the instructions are executed concurrently, the data transmission method in each of the foregoing embodiments may be implemented.
  • the computer program product includes one or more computer programs or instructions.
  • the computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices.
  • the computer program or instructions may be stored in a computer-readable storage medium or transmitted through the computer-readable storage medium.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server integrating one or more available media.
  • the usable medium may be a magnetic medium, such as a floppy disk, a hard disk, or a magnetic tape; it may also be an optical medium, such as a DVD; or a semiconductor medium, such as a solid state disk (SSD).

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Abstract

本申请公开了一种数据传输方法和装置。当用于传输寻呼消息或广播消息的小区公共传输资源被抢占用于传输URLLC业务时，通过在系统消息中携带抢占指示，并主动对该寻呼消息或广播消息进行重传。本方法一方面避免了初传的"被污染"的数据影响终端对寻呼消息或广播消息的译码，提高了译码成功率；另一方面避免终端需要等待较长的时间才能正确接收寻呼消息或广播消息，从而有效地减小了寻呼消息或广播消息的传输时延，提高了用户体验。

Description

数据传输方法和装置
本申请要求于2018年10月31日提交中国专利局、申请号为201811287429.8、发明名称为“数据传输方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，尤其涉及一种数据传输方法和装置。
背景技术
在长期演进(long term evolution，LTE)系统中，最小的时间调度单元为1毫秒(millisecond，ms)时间长度所对应的传输时间间隔(transmission time interval，TTI)。为了满足高可靠低时延通信(ultra reliable and low latency communications，URLLC)业务的传输时延需求，无线空口的数据传输可以使用更短的时间调度单元，例如，使用迷你时隙(mini-slot)或更大的子载波间隔的时隙作为最小的时间调度单元。其中，一个mini-slot包括一个或多个时域符号，这里的时域符号可以是正交频分复用(orthogonal frequency division multiplexing，OFDM)符号，也可以是单载波频分多址(single carrier frequency division multiple access，SC-FDMA)符号，其中SC-FDMA又称为带有转换预编码的正交频分复用(orthogonal frequency division multiplexing with transform precoding，OFDM with TP)。对于子载波间隔为15千赫兹(kilohertz，kHz)的一个时隙，包括6个或7个OFDM符号，对应的时间长度为0.5ms；对于子载波间隔为60kHz的一个时隙，对应的时间长度则缩短为0.125ms。
由于增强型移动宽带(enhanced mobile broadband，eMBB)业务的数据量比较大，而且传输速率比较高，对时延不敏感，如当前新空口(new radio，NR)要求单向达到4ms即能够满足业务需求，因此通常采用较长的时间调度单元进行数据传输以提高传输效率，例如采用15kHz子载波间隔的一个时隙，对应14个OFDM符号，对应的时间长度为1ms。
为满足URLLC业务低时延要求，当URLLC业务数据到达时，基站需要尽快将URLLC业务的数据发送出去。当系统资源比较空闲时，URLLC业务数据可以直接发送，但当前系统比较繁忙，或者系统已经调度了eMBB业务时，为避免URLLC业务数据的时延过大，基站会对准备传输或者正在传输eMBB业务数据的传输资源进行抢占，即停止发送eMBB业务数据，改为发送URLLC业务数据。
参见图1中的(a)所示，在时隙n用于传输eMBB的业务资源，包括eMBB控制信息和eMBB数据信息，所述eMBB控制信息用于解调eMBB业务的数据信息；在时隙n+1中仅用于传输URLLC业务资源，该URLLC业务资源也包括URLLC控制信息和URLLC数据信息；在时隙n中传输的eMBB业务数据和时隙n+1中传输的URLLC业务数据之间不冲突，即未发生抢占现象。如图1中的(b)所示，当时隙n+1用于传输eMBB业务时，eMBB业务的数据信息中有部分资源被URLLC业务抢占，进而影响了终端对eMBB业务数据的正常接收，降低了用户体验。
发明内容
本申请提供了一种数据传输方法和装置，可用于解决当正在传输资源被其它业务数据抢占时，如何处理以便提高用户满意度的问题。
示例性地，在一种可能的场景下，基站周期性地在特定的寻呼时机向终端发送寻呼消息。当终端处于空闲态时，会进入休眠省电的状态，并且只有在寻呼时机到来时才接收寻呼消息。通常为了减小终端耗电，基站发送寻呼消息的间隔周期可达几十毫秒或者上百毫米。当基站发送寻呼消息的资源被其它业务抢占时，终端必须等到下一个寻呼时机才有可能正确接收寻呼消息，这会造成终端接收寻呼消息间隔的时延较长，影响用户感受。
第一方面，本申请实施例提供了一种数据传输方法，以解决基站发送的寻呼消息被URLLC业务数据抢占时，影响用户体验的技术问题。本方法的执行主体可以是终端，也可以是应用于终端的芯片。下面以终端作为执行主体为例，对本方法进行描述。
具体地，本方法包括：终端接收来自网络设备的系统消息，所述系统消息中包括第一指示信息，所述第一指示信息用于指示公共传输资源是否有被抢占的可能性；在第一时域资源上接收第一消息；当终端在所述第一时域资源上未成功接收到所述第一消息，且所述第一指示信息指示所述公共传输资源有被抢占的可能性时，在第二时域资源上接收所述第一消息。
可选的，所述第一消息为寻呼消息或广播消息。
可选的，在所述第一消息为寻呼消息的条件下，所述第二时域资源与所述第一时域资源之间间隔的预设时长小于第一阈值。可选的，所述第一阈值为所述寻呼消息的寻呼周期。
可选的，所述预设时长可以根据协议确定，或该预设时长可以由基站配置并通过信令通知给终端。
此外，所述公共传输资源的部分或者全部用于传输所述第一消息。
本方面提供的方法，当终端未成功接收到网络设备发送的第一消息，且第一指示信息指示用于传输第一消息的公共传输资源可能被抢占时，在预设时长再次接收第一消息，且该预设时长小于原第一消息发送的时间间隔，从而避免终端需要等待原来第一阈值所对应的第一消息的发送时间间隔结束才能再次接收第一消息，本方法有效性地减小了传输第一消息的时延，从而提高了用户体验。
可选的，所述第一指示信息的取值包括第一取值，所述第一取值用于指示所述公共传输资源有被抢占的可能性，比如第一取值为TRUE。当接收端获取的第一指示信息中包括第一取值时，表明用于传输第一消息的公共传输资源的部分或全部有被抢占的可能性。如果第一指示信息中不包括第一取值，则表明没有被抢占的可能性。
可选的，所述第一指示信息的取值还包括第二取值，所述第二取值用于指示所述公共传输资源没有被抢占的可能性，比如第二取值为FALSE。所述第一指示信息中包括第一取值和第二取值中的一种，如果所述第一指示信息中携带的内容是第二取值FALSE，则表明用于传输第一消息的公共传输资源的部分或全部没有被抢占的可能性。
可选的，所述第一指示信息为第一信元。
结合第一方面，在第一方面的一种可能的实现中，所述方法还包括：接收来自所 述网络设备的第二指示信息，所述第二指示信息用于指示所述公共传输资源被抢占，进一步地，所述第二指示信息用于指示上一次传输相同类型消息或数据的公共传输资源被抢占。
本实现方式中，终端接收网络设备发送的第二指示信息，来指示上一次传输第一消息的传输资源被其它业务数据抢占，从而使得终端在对接收的数据进行混合自动重传请求合并时，能够丢弃被抢占资源上的数据，防止被抢占资源上的数据“污染”原业务数据，避免了因合并错误的数据而导致解调发生错误，本方法提高了对第一消息译码的成功率。
结合第一方面，在第一方面的另一种可能的实现中，所述方法还包括：接收来自所述网络设备的第三指示信息，所述第三指示信息用于指示被抢占的公共传输资源的资源块信息。该资源块信息包括时域信息、频域信息、或者时域信息和频域信息。进一步地，所述时域信息用于指示被抢占的资源的频域位置，所述时域信息用于指示被抢占的资源的时域位置。
本实现方式中，终端接收网络设备发送的第三指示信息，来指示上一次传输第一消息的公共传输资源被其它业务数据抢占的时域位置和/或频域位置，从而使得终端在对接收的数据进行HARQ合并时，能够丢弃被抢占资源上的数据，防止被抢占资源上的数据“污染”原业务数据，提高了第一消息译码的成功率。
结合第一方面，在第一方面的又一种可能的实现中，在所述第二时域资源上接收的所述第一消息所使用的HARQ的冗余版本号为0或3，由于冗余版本号0和3具有自解码特性，即能够单独译码，且单独译码性能优于其它冗余版本，所以译码性能优于其它冗余版本。
第二方面，本申请实施例还提供了一种数据传输方法，本方法的执行主体可以是网络设备，比如基站，也可以是应用于网络设备的芯片。下面以网络设备作为执行主体为例，对本方法进行描述。
本方法包括：网络设备发送系统消息，所述系统消息中包括第一指示信息，所述第一指示信息用于指示公共传输资源是否有被抢占的可能性；在第一时域资源上发送第一消息；当传输所述第一消息的传输资源部分或全部被抢占时，在第二时域资源上再次发送所述第一消息，其中，传输所述第一消息的传输资源为所述公共传输资源中的部分或全部。
结合第二方面，在第二方面的一种可能的实现中，所述第一消息为寻呼消息或广播消息。
进一步地，在所述第一消息为寻呼消息的条件下，所述第二时域资源与所述第一时域资源之间间隔的预设时长小于第一阈值。可选的，所述第一阈值为所述寻呼消息的寻呼周期。
可选的，所述第一指示信息的取值包括第一取值，所述第一取值用于指示所述公共传输资源有被抢占的可能性。
可选的，所述第一指示信息的取值还包括第二取值，所述第二取值用于指示所述公共传输资源没有被抢占的可能性。
结合第二方面，在第二方面的一种可能的实现中，所述方法还包括：网络设备发 送第二指示信息，所述第二指示信息用于指示所述公共传输资源被抢占。
结合第二方面，在第二方面的另一种可能的实现中，所述方法还包括：发送第三指示信息，所述第三指示信息用于指示被抢占的公共传输资源的资源块信息。
结合第二方面，在第二方面的又一种可能的实现中，在所述第二时域资源上发送的所述第一消息使用的HARQ的冗余版本号为0或3。例如，所述网络设备在第二时域资源上发送广播消息的HARQ的冗余版本号为0或3。
第三方面，本申请实施例还提供了一种数据传输方法，用于解决随机接入过程中，网络设备发送竞争解决消息时其传输资源被抢占的问题，本方法的执行主体可以是终端，也可以是应用于终端的芯片。下面以终端作为执行主体为例，对本方法进行描述。
具体地，本方法包括：终端接收来自网络设备的系统消息，所述系统消息中包括第一指示信息，所述第一指示信息用于指示公共传输资源是否有被抢占的可能性；在第一时频资源上接收来自所述网络设备的第一数据，所述第一数据为竞争解决消息的初传数据；当对所述竞争解决消息译码失败的条件下，在第二时频资源上接收来自所述网络设备的第二数据，所述第二数据为所述竞争解决消息的重传数据；根据所述第一指示信息对所述第一数据和第二数据进行处理。
可选的，所述第一指示信息的取值包括第一取值，所述第一取值用于指示所述公共传输资源有被抢占的可能性。
可选的，所述第一指示信息的取值还包括第二取值，所述第二取值用于指示所述公共传输资源没有被抢占的可能性。
结合第三方面，在第三方面的一种可能的实现中，所述方法还包括：终端接收来自所述网络设备的可能被抢占的资源块信息，终端判断所述可能被抢占的资源块与所述第一时频资源之间是否有重叠的资源：如果有重叠的资源，则说明所述第一时频资源可能被部分或全部抢占，则终端将所述重叠的资源中的数据从缓存中剔除或丢弃；如果没有重叠的资源，则终端在缓存中保留在所述第一时频资源上接收到的所述第一数据。
可选的，所述资源块信息包括：时域信息、频域信息、时域信息和频域信息。进一步地，所述时域信息用于指示被抢占的资源的频域位置，所述时域信息用于指示被抢占的资源的时域位置。
结合第三方面，在第三方面的另一种可能的实现中，根据所述第一指示信息对所述第一数据和第二数据进行处理，包括：当所述第一指示信息的取值为第一取值时，丢弃所述第一数据，使得所述第一数据不参与HARQ合并，防止可能被抢占资源上的数据对业务数据造成潜在的“污染”，从而能够有效提高对竞争解决消息的译码成功率。
结合第三方面，在第三方面的又一种可能的实现中，所述第二数据所使用的HARQ的冗余版本号为0或3。
本方面提供的方法，终端通过获取来自网络设备的第一指示信息，来指示当前传输的数据是否有被抢占的可能性，并且，在随机接入过程中的竞争解决消息的初传数据被其它业务数据抢占情况下，基站再次向终端发送竞争解决消息的重传数据，使得终端在数据进行处理的过程中丢弃被抢占资源上的数据，防止被抢占资源上的数据“污染”业务数据，提高对竞争解决消息的译码成功率。
第四方面，本申请实施例还提供了一种数据传输方法。本方法的执行主体可以是终端，也可以是应用于终端的芯片。下面以终端作为执行主体为例，对本方法进行描述。
本方法包括：终端接收来自网络设备的系统消息，所述系统消息中包括第四指示信息，所述第四指示信息用于指示公共传输资源中可能被抢占的资源块信息；在第一时频资源上接收来自所述网络设备的第一数据，所述第一数据为竞争解决消息的初传数据；当在第一时频资源上接收的竞争解决消息译码失败的条件下，在第二时频资源上接收第二数据，所述第二数据为所述竞争解决消息的重传数据；根据所述第四指示信息对所述第一数据和第二数据进行处理。
可选的，所述资源块信息包括：时域信息、频域信息、时域信息和频域信息。进一步地，所述时域信息用于指示被抢占的资源的频域位置，所述时域信息用于指示被抢占的资源的时域位置。
结合第四方面，在第四方面的一种可能的实现中，所述根据所述第四指示信息对所述第一数据和第二数据进行处理，包括：终端判断所述可能被抢占的资源块与第一时频资源之间是否有重叠的资源：如果有重叠的资源，则说明第一时频资源可能被部分或全部抢占，终端将所述重叠的资源中的数据从缓存中剔除或丢弃；如果没有重叠的资源，则终端在缓存中保留在所述第一时频资源上接收到的所述第一数据。本方法使得所述可能被抢占的资源上的第一数据不参与所述竞争解决消息的HARQ合并，防止可能被抢占资源上的数据对业务数据造成潜在的“污染”，从而能够有效提高对竞争解决消息的译码成功率。
结合第四方面，在第四方面的另一种可能的实现中，所述第二数据所使用的HARQ的冗余版本为0或3。
第五方面，本申请实施例还提供了一种数据传输方法。本方法的执行主体可以是网络设备，也可以是应用于网络设备的芯片。下面以网络设备作为执行主体为例，对本方法进行描述。
本方法包括：网络设备发送系统消息，所述系统消息中包括第四指示信息，所述第四指示信息用于指示公共传输资源中可能被抢占的资源块信息；在第一时频资源上发送第一数据，所述第一数据为竞争解决消息的初传数据；在接收到来自终端的否定应答的情况下，在第二时频资源上向所述终端发送第二数据，所述第二数据为所述竞争解决消息的重传数据，所述否定应答指示所述第一数据译码失败。
第六方面，本申请实施例还提供了一种通信装置，包括用于执行前述第一方面至第五方面各种实现方式中的方法的功能单元。
可选的，所述功能单元包括接收单元、处理单元和发送单元。此外，还可以包括存储单元等。
第七方面，本申请实施例还提供了一种通信装置，所述通信装置包括处理器，所述处理器与存储器耦合，所述存储器用于存储指令；所述处理器用于执行所述存储器中的指令，使得所述通信装置执行前述第一方面至第五方面各种实现方式中的数据传输方法。
第八方面，本申请实施例还提供了一种计算机可读存储介质，所述存储介质中存 储有指令，当所述指令在计算机上运行时，执行前述第一方面至第五方面各种实现方式中的数据传输方法。
第九方面，本申请实施例还提供了一种计算机程序产品，所述计算机程序产品包括计算机指令，当所述指令并执行时，可实现前述第一方面至第五方面各种实现方式中的数据传输方法。
第十方面，本申请实施例还提供了一种芯片系统，所述芯片系统包括处理器和接口电路，所述接口电路与所述处理器耦合，所述处理器用于执行计算机程序或指令，以实现前述第一方面至第五方面各种实现方式中的方法；所述接口电路用于与所述芯片系统之外的其它模块进行通信。
本申请实施例提供的方法和装置，当用于传输寻呼消息或广播消息的小区公共传输资源被抢占用于传输URLLC业务时，通过在系统消息中携带抢占指示，并主动对该寻呼消息或广播消息进行重传。本方法一方面避免了初传的“被污染”的数据影响终端对寻呼消息或广播消息的译码，提高了译码成功率；另一方面避免终端需要等待较长的时间才能正确接收寻呼消息或广播消息，从而有效地减小了寻呼消息或广播消息的传输时延，提高了用户体验。
附图说明
图1为本申请提供的一种eMBB业务数据的传输资源与URLLC业务数据的传输资源之间的示意图；
图2为本申请实施例提供的一种应用的移动通信系统的架构示意图；
图3为本申请实施例提供的一种在寻呼时机发送寻呼消息的示意图；
图4为本申请实施例提供的一种数据传输方法的流程示意图；
图5为本申请实施例提供的一种发送寻呼消息的流程示意图；
图6为本申请实施例提供的一种指示资源块信息的示意图；
图7为本申请实施例提供的一种随机接入的流程图；
图8为本申请实施例提供的另一种数据传输方法的流程流程图；
图9为本申请实施例提供的一种通信装置的结构示意图；
图10为本申请实施例提供的一种硬件设备的结构示意图。
具体实施方式
在对本申请实施例的技术方案说明之前，首先结合附图对本申请实施例的技术场景和涉及的网元设备进行介绍。
本申请的技术方案可应用于各种移动通信系统，例如可应用于第五代(5th generation，5G)移动通信系统中的新无线(new radio，NR)系统或未来的移动通信系统，本申请对此不作限定。
参见图2，为本申请实施例应用的移动通信系统的架构示意图。
如图2所示，该移动通信系统包括核心网设备、无线接入网设备和至少一个终端(如图2中的终端1和终端2)。其中，终端通过无线的方式与无线接入网设备相连，无线接入网设备通过无线或有线方式与核心网设备连接。核心网设备与无线接入网设备可以是独立的不同的物理设备，也可以是将核心网设备的功能与无线接入网设备的逻辑功能集成在同 一个物理设备上，还可以是一个物理设备上集成了部分核心网设备的功能和部分的无线接入网设备的功能。所述终端可以是固定位置的，也可以是可移动的。
此外，图2所示的通信系统中还可以包括其它网络设备，比如还可以包括无线中继设备和无线回传设备，在图2中未画出。本申请的实施例对该移动通信系统中包括的核心网设备、无线接入网设备和终端的数量不做限定。
无线接入网设备是终端通过无线方式接入到该移动通信系统中的接入设备，可以是基站NodeB、演进型基站(evolved NodeB，eNodeB)、传输接收点(transmission reception point，TRP)、5G移动通信系统中的基站、未来移动通信系统中的基站或WiFi系统中的接入节点等，本申请的实施例对无线接入网设备所采用的具体技术和具体设备形态不做限定。在本申请中，无线接入网设备简称网络设备，如果无特殊说明，在本申请中，网络设备均指无线接入网设备。
终端也可以称为终端设备、用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端(mobile terminal，MT)等。其中，终端可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等等。本申请的实施例对终端所采用的具体技术和具体设备形态不做限定。
可选的，网络设备和终端可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上；还可以部署在空中的飞机、气球和人造卫星上。本申请的实施例对网络设备和终端的应用场景不做限定。
网络设备和终端之间可以通过授权频谱(licensed spectrum)进行通信，也可以通过免授权频谱(unlicensed spectrum)进行通信，也可以同时通过授权频谱和免授权频谱进行通信。网络设备和终端之间可以通过6吉兆赫(gigahertz，GHz)以下的频谱进行通信，也可以通过6GHz以上的频谱进行通信，还可以同时使用6GHz以下的频谱和6GHz以上的频谱进行通信。本申请的实施例对网络设备和终端之间所使用的频谱资源不做限定。
本申请如下各个实施例中，以网络设备为基站，终端为UE举例，对各个技术方案进行说明。
本申请实施例提供的技术方案目的为了应对公共传输资源可能被其它业务数据抢占的情景下，对在公共传输资源上传输的数据进行处理，从而减小传输资源被抢占时对在公共传输资源上传输的数据产生的影响，提高在公共传输资源上传输数据的效率。
其中，所述公共传输资源可以用于传输寻呼消息、系统消息或冲突解决消息等。所述抢占公共传输资源的业务数据可以是URLLC业务数据，也可以是其它的业务数据，本申请实施例对此不予限制。
首先，对传输寻呼消息或寻呼数据的资源被URLLC业务数据抢占时产生的问题做简单地介绍。
当UE处于空闲状态时，UE需要周期性地接收基站发送的寻呼消息。对应的，基站周 期性地发送寻呼消息中的“周期”即可称为寻呼周期，用T表示。其中，寻呼周期T可以是空闲态UE的不连续接收周期。具体地，UE在哪一个寻呼时刻(paging occasion，PO)接收寻呼消息，可以根据协议确定。其中，PO为基站发送寻呼消息的寻呼时刻。在本申请中，所述寻呼消息也可以称为寻呼信息。
对于一个UE而言，在一个寻呼周期T内的多个帧中一般只有一个帧用来寻呼。如图3所示，以T等于40ms为例，帧号为0到3的四个无线帧组成一个寻呼周期，帧号为0的无线帧为寻呼无线帧0，该寻呼无线帧0中包括时隙编号为0至9共10个时隙，每个时隙可以称为一个寻呼时机。
如图3所示，一种具体实现中，设每个寻呼周期T的寻呼无线帧的时隙4为UE1的寻呼时机，用于发送寻呼消息给UE1。即基站在每个寻呼周期T内发送给UE1的寻呼时机只能是寻呼无线帧的时隙4，这里的寻呼无线帧可以是图3中的寻呼无线帧0，也可以是寻呼无线帧4。期间，基站从第一次寻呼的时隙4到第二次寻呼的时隙4之间需要间隔一个寻呼周期T。本申请中的寻呼无线帧n表示帧号为n的寻呼无线帧，时隙m表示时隙号为m的时隙，n和m均为非负整数。
当基站在寻呼无线帧0的时隙4发送寻呼消息的传输资源被URLLC业务数据抢占时，UE必须等到下一个寻呼时机，即寻呼无线帧4的时隙4到来时才有可能再次接收寻呼消息，此时将会增大寻呼时延，影响用户感受。
本实施例提供了一种数据传输方法，用于解决发送寻呼消息或广播消息的传输资源被URLLC业务抢占时，UE再次接收寻呼消息或广播消息的时间间隔较长的问题。
具体地，如图4所示，该方法包括：
101：基站向UE发送系统消息。对应的，UE接收来自基站的系统消息。
所述系统消息中包括第一指示信息，所述第一指示信息用于指示公共传输资源是否有被抢占的可能性。所述公共传输资源是指：基站用于发送公共数据或者消息的物理资源，具体可以包括时域资源、频域资源、时频资源和频域资源。进一步地，所述公共数据或者消息可以包括：寻呼消息、广播消息或随机接入过程中的消息等。
进一步地，所述第一指示信息用于指示所述公共传输资源是否有被URLLC业务数据抢占的可能性，具体包括以下两种情况：
1、有被抢占的可能性；
2、没有被抢占的可能性。
当基站收到URLLC终端的业务数据的时候，如果没有可以用于传输该URLLC终端的业务数据的传输资源，基站可以把已经分配的、用于传输公共数据的公共传输资源用于传输URLLC终端的业务数据，这个过程称之为公共传输资源被抢占。
当基站的某个小区内有处于连接态的URLLC终端时，由于URLLC终端的业务数据的突发性，基站随时可能会收到该URLLC终端的业务数据，也就是说公共传输资源随时有可能被抢占。当基站的某个小区内没有处于连接态的URLLC终端时，公共传输资源就没有被URLLC终端抢占的可能。在本申请中，所述URLLC终端可以理解为发起了URLLC业务会话的终端。
在一种可能的指示方式中，所述第一指示信息的取值包括第一取值，所述第一取值用于指示所述公共传输资源有被抢占的可能性。如果系统消息中不包括第一指示信息，则表 示所述公共传输资源没有被抢占的可能性。可选的，所述第一取值内容为“TRUE”。
在另一种可能的指示方式中：所述第一指示信息中包括第一取值和第二取值，所述第一取值用于指示所述公共传输资源有被抢占的可能性；所述第二取值用于指示所述公共传输资源没有被抢占的可能性。可选的，第一取值内容为“TRUE”，第二取值内容为“FALSE”；或者第一取值内容为“FALSE”，第二取值内容为“TRUE”。
可选的，在步骤101中基站发送系统消息的具体方式可以是广播，即基站向该基站的某一个小区的覆盖范围内的所有UE发送系统消息。其中，广播所述系统消息的广播周期是指基站按照一定的时间间隔t发送系统消息，比如t＝40ms，每次广播的系统消息中所携带的第一指示信息的内容可能相同也可能不同。
可选的，所述系统消息为系统消息块类型1(system information block type 1，SIB1)。
102：基站在第一时域资源上向UE发送第一消息。
其中，所述第一消息为寻呼消息或广播消息。在本申请中，所述广播消息也可以称为广播信息。
所述第一时域资源可以是某一个时隙。具体地，当所述第一消息为寻呼消息时，该所述第一时域资源为所述寻呼时机，比如图3中的寻呼无线帧0中的时隙4，或者寻呼无线帧4的时隙4。当所述第一消息为广播消息时，所述第一时域资源为广播消息发送周期的某一时刻。
进一步地，所述基站发送的所述寻呼消息中包括控制信息和数据信息，所述控制信息用于指示数据的解调和译码。或者，基站在每个广播消息的发送周期内发送广播消息。所述广播消息具体可以为广播控制信道(broadcast control channel，BCCH)。一般基站会将该BCCH传输包发送多次，接收端会接收每次基站广播的BCCH传输包，并将这些BCCH传输包的信息进行解调和译码，最后合并得到完整的信息。
103：当传输所述第一消息的传输资源的部分或全部被抢占时，基站在第二时域资源上向UE发送所述第一消息。其中，所述传输所述第一消息的传输资源为所述公共传输资源中的部分或全部。
对应的，当UE在所述第一时域资源上未成功接收到所述第一消息，且所述第一指示信息指示所述公共传输资源有被抢占的可能性时，UE在第二时域资源上接收所述第一消息。具体UE如何判断所述第一指示信息是否指示所述公共传输资源有被抢占的可能性，可以参见上述101中的相关描述。当UE在第一时域资源上成功接收到第一消息或系统消息中不包括第一指示信息或第一指示信息指示所述公共传输资源没有被抢占的可能性时，UE执行现有技术中的寻呼处理流程。
如果所述第一消息为寻呼消息，则所述第二时域资源与第一时域资源之间间隔的预设时长小于第一阈值。可选的，所述第一阈值为所述寻呼消息的寻呼周期。所述预设时长可以为一个或多个时隙。
如图5所示，基站在寻呼无线帧0的时隙4向UE发送的寻呼消息被URLLC业务数据抢占，则基站在间隔两个时隙之后的寻呼无线帧0的时隙7再次向UE发送所述寻呼消息。其中，所述第一时域资源为寻呼无线帧0的时隙4，所述第二时域资源为寻呼无线帧0的时隙7，所述预设时长为两个时隙，所述第一阈值为寻呼周期T。可选的，基站还可以在寻呼无线帧0的时隙5至时隙9的时间窗内选择任一时机再次向UE发送所述寻呼消息。 对应的，UE可以在相应的寻呼时机接收寻呼消息。
具体地，所述预设时长，比如间隔的时隙数可以是协议预定义，也可以是基站作为参数配置给UE，本申请对此不予限制。
另外，可选的，本申请中所述第一时域资源可以称为第一寻呼时机，所述第二时域资源可以称为第二寻呼时机或者备选寻呼时机。
如果所述第一消息为广播消息，则所述第二时域资源为经过一个广播周期之后的时隙。
其中，第一消息的重传，基站可以采用不同的混合自动重传请求(hybrid automatic repeat request，HARQ)冗余版本，冗余版本可以通过物理下行控制信道(physical downlink control channel，PDCCH)中的下行控制信息(downlink control Information，DCI)来指示。重传和初传采用不同的冗余版本可以提高UE对数据的译码成功率。
具体地，所述基站在所述第二时域资源上发送的广播消息使用的HARQ冗余版本号为0或3。使用冗余版本号为0和3进行传输的数据具有自解码特性，即能够单独译码而无需依赖初传数据。
此外，对于上述步骤103中“传输所述第一消息的传输资源部分或全部被抢占”的具体描述包括如下：
在第一消息为寻呼消息的条件下，所述被抢占可以理解为：(1)UE在第一时域资源未检测到调度第一消息的控制信道，即发送第一消息的控制信道的资源被抢占；(2)UE在第一时域资源上检测到第一消息的控制信道，但是对该第一消息的译码失败，可以理解为传输第一消息的数据信道的资源被抢占。
在第一消息为广播消息的条件下，所述被抢占可以理解为：(2)UE在第一时域资源上检测到第一消息的控制信道，但是对该第一消息的译码失败，可以理解为传输第一消息的数据信道的资源被抢占。
本实施例提供的方法，当用于传输寻呼消息的小区公共传输资源被抢占用于传输URLLC业务数据时，通过在系统消息中携带抢占指示，并主动对该寻呼消息或广播消息进行重传，从而避免了终端需要等待较长的时间才能再次正确接收到寻呼消息或广播消息，从而有效地减小了等待时间，提高了用户体验。
可选的，上述方法包括：
104：基站向UE发送第二指示信息。对应的，UE接收来自基站的第二指示信息。
其中，所述第二指示信息用于指示所述公共传输资源被抢占。具体可以理解为，所述第二指示信息用于指示所述第一指示信息指示的“有被抢占的可能性”变成了已经被抢占。
可选的，所述第二指示信息中的取值为“Y”或取值为1。
可选的，所述第二指示信息还可以用于指示所述第一指示信息指示的“有被抢占的可能性”但实际未被抢占，例如所述第二指示信息的取值为“N”或取值为0。
可选的，上述方法包括：
105：基站向UE发送第三指示信息。对应的，UE接收来自基站的第三指示信息。
其中，所述第三指示信息用于指示被抢占的公共传输资源的资源块信息。进一步地，所述公共传输资源的资源块信息包括：时域信息、频域信息、时域信息和频域信息，所述时域信息用于指示被抢占的资源的时域位置，所述频域信息用于指示被抢占的资源的频域 位置。可选的，所述时域信息和频域信息均占用2比特(bit)。
可以理解的是，上述步骤104和105为可以是两个并列的方案，即基站可以只发送第二指示信息，或者也可以只发送第三指示信息。当基站只发送第三指示信息时，通过直接指示被抢占的公共传输资源的时域和/或频域位置来表达所述公共传输资源确实“被抢占”的情况。例如，当第三指示信息取值为“全0”时，表示初传的数据没有被其它业务抢占；当第三指示信息的取值为非“全0”时，表示所述公共传输资源的部分或全部被抢占，以及指示该被抢占的公共传输资源的资源位置。
可选的，所述第二指示信息或第三指示信息可以通过所述第二时域资源上发送的第一消息来承载。换句话说，所述基站在第二时域资源上发送的寻呼消息或广播消息中包括所述第二指示信息或所述第三指示信息。
可选的，如果基站发送的第一时域资源上的广播消息未被其它业务抢占，则基站在所述第二时域资源上发送的广播消息可以使用任意一个HARQ冗余版本号，比如可以使用冗余版本号0至3中的任意一个。
在前述步骤103中，UE在第一时域资源上检测到第一消息的控制信道，但是对该第一消息的数据信道译码失败，可能是由于传输第一消息的数据信道的资源被URLLC业务数据抢占，也可能是由于无线信道的衰落或邻区的干扰导致的译码失败。此时UE可以将在第一时域资源上接收到的数据缓存在HARQ缓存中，以便跟后续的重传数据合并，从而提高重传之后的译码成功率。
如果UE接收到的第二指示信息指示所述公共传输资源被抢占，则UE可以将该HARQ缓存中缓存的第一消息的初传数据丢弃。如果UE接收到第三指示信息，具体指示了被抢占的公共传输资源的资源块信息，则UE可以将HARQ缓存中通过被抢占的资源块传输的数据丢弃。上述丢弃HARQ缓存中被抢占的资源块上传输的数据，可以避免被抢占的资源上传输的URLLC业务数据“污染”第一消息的数据，从而提高对第一消息译码的成功率。
如果UE接收到的第二指示信息指示所述公共传输资源未被抢占，则HARQ缓存中的第一消息的初传数据可以与后续第一消息的重传数据进行HARQ合并，因为第一消息的传输数据没有被“污染”。
上述第三指示信息指示的时域信息和/或频域信息可以通过如下方式实现：
时域信息可以通过2bit来指示，例如，设定“00”表示该公共传输资源未被抢占；“10”表示该公共传输资源的左半部分被抢占；“01”表示该公共传输资源的右半部分被抢占；“00”表示该公共传输资源全部被抢占。
频域信息也可以通过2bit来指示，例如，设定“00”表示该公共传输资源未被抢占；“10”表示该公共传输资源的上半部分被抢占；“01”表示该公共传输资源的下半部分被抢占；“00”表示该公共传输资源全部被抢占。
如图6所示，假设上述公共传输资源对应的时域范围为从符号0到符号13、对应的频域范围为从物理资源块(physical resource block，PRB)1到PRB6。图6中阴影区域为被抢占的公共传输资源，即被抢占公共传输资源对应的时域范围为从符号0至符号6、对应的频域范围从PRB1到PRB6。对应的，第三指示信息中指示的频域信息和时域信息可以为：时域信息取值为“10”和频域信息取值为“10”。
如果没有特殊说明，在本申请的实施例中的符号均指时域符号。本申请中的时域符号， 可以是正交频分复用(orthogonal frequency division multiplexing，OFDM)符号，也可以是单载波频分多址(single carrier frequency division multiple access，SC-FDMA)符号，其中SC-FDMA又称为带有转换预编码的正交频分复用(orthogonal frequency division multiplexing with transform precoding，OFDM with TP)。在本申请中，“符号m”中的m表示符号的索引或编号，“时隙m”中的m表示时隙的索引或编号。
在本申请的另一个实施例中，还提供了一种数据传输方法，用于解决在UE随机接入过程中，竞争解决消息的传输资源被抢占的问题。
首先，对基于竞争的随机接入过程进行简单介绍。如图7所示，该随机接入过程包括：
第1步：UE向基站发送消息(message，MSG)1。
UE随机选择一个前导序列，在随机接入信道(random access channel，RACH)上发送MSG1。UE发送完前导序列后，在一个时间窗内接收基站回复的随机接入响应(random access response，RAR)消息，也称MSG2，如果基站在该时间窗内接收到MSG2，则进入第3步；否则继续第1步。
第2步：基站向UE发送RAR消息。
基站在检测到有前导序列发送后，下行发送随机接入响应，随机接入响应中至少应包含以下信息：所收到的前导序列的编号、定时调整信息、为该UE分配的上行资源位置指示信息、临时分配的小区无线网络临时标识(cell radio network temporary identifier，C-RNTI)。
第3步：UE向基站发送MSG3。
UE在收到随机接入响应后，在基站分配的上行资源上向基站发送上行消息，这个消息也称为MSG3。
第4步：基站向UE发送竞争解决消息，即MSG4。
基站接收UE发送的MSG3后，向接入成功的UE返回MSG4。如果UE收到MSG4的控制信息，但数据译码失败，则UE向基站反馈否定应答(negative acknowledge，NACK)，请求基站重发MSG4。
当随机接入过程中传输MSG4的资源被URLLC业务抢占，则UE不能及时完成随机接入，并且还会因为被“污染”的数据参与重传数据的合并译码，导致重传数据也译码失败。
为解决上述问题，本实施例提供了一种数据传输方法，如图8所示，该方法包括：
301：基站向UE发送系统消息。对应的，UE接收来自基站的系统消息。
可选的，所述系统消息中包括第一指示信息，所述第一指示信息用于指示公共传输资源是否有被抢占的可能性。有关第一指示信息的详细描述可以参考图4中步骤101的相关描述。
具体地，基站周期性地发送系统消息，每个系统消息中包括所述第一指示信息，用于指示当前时刻的公共传输资源是否有被抢占的可能性。UE周期性地接收基站发送的系统消息，每个所述系统消息中携带第一指示信息。可选的，本申请中的UE包括连接态的UE、空闲态UE或者非激活(inactive)态的UE。
可选的，所述系统消息中包括第四指示信息，第四指示信息用于指示公共传输资源中可能被抢占的资源块信息。所述资源块信息包括时域信息、频域信息、时域信息和频域信息，可用于指示可能被抢占的时域资源位置和频域资源位置。可以理解的是，该可能被抢 占的资源块信息也可以承载在除系统消息之外的其它消息或信令上。第四指示信息的设计可以参考上述实施例中第三指示信息的设计方法直接得到，这里不加赘述。
302：基站在第一时频资源上向UE发送第一数据。对应的，UE在第一时频资源上接收来自基站的第一数据。
其中，所述第一数据为竞争解决消息的初传数据，比如所述竞争解决消息为MSG4。
可选的，在步骤301和步骤302之间还包括基站随机接入过程中，比如MSG1、MSG2和MSG3的传输过程，具体的过程可以参见图7中的第1步至第3步。
如果UE在第一时频资源上检测到第一数据的控制信道，但对该第一数据的数据信道译码失败，则UE可以向基站反馈NACK。
当所述UE对第一数据的数据信道译码失败时，也可以不向基站反馈NACK，也不向所述基站不反馈其它任何信息；只有当UE对所述第一数据的数据信道译码正确时，才向基站反馈肯定应答(acknowledge，ACK)。对应的，基站在发送了第一数据的一定时间内，如果未接收到所述UE反馈的信息，则会认为UE没有正确接收到第一数据。
如果UE对第一数据译码失败，UE可以将接收到的第一数据缓存在对应的HARQ缓存中，以便于与后续的重传数据进行HARQ合并。
第一数据的数据信道译码失败可能是由于传输第一数据的资源被URLLC业务数据抢占，也可能是由于无线信道的衰落或邻区的干扰导致的。
303：当所述基站接收到UE反馈的NACK时，在第二时频资源上向所述UE发送第二数据。对应的，当UE在第一时频资源上接收的竞争解决消息译码失败的条件下，UE在第二时频资源上接收第二数据。
所述第二数据为所述竞争解决消息的重传数据，即MSG4的重传数据。所述NACK用于指示第一数据译码失败。
可选的，如果基站在发送完第一数据后的一定时间内未接收到UE的任何反馈，则也在所述第二时频资源上发送所述第二数据。
如果传输第一数据的第一时频资源被其它业务数据抢占，那么所述基站在第二时频资源上发送所述第二数据所使用的HARQ冗余版本号可以为0或3。如果传输第一数据的第一时频资源没有被其它业务数据抢占，则基站向UE发送第二数据所使用的HARQ冗余版本号可以不受限制，对应的冗余版本号可以为0、1、2或者3。基站可以通过PDCCH中的DCI将冗余版本号通知给所述UE。
304：UE根据第一指示信息或第四指示信息对所述第一数据和第二数据进行处理。
当步骤301中的系统消息中包括第一指示信息时，UE根据第一指示信息对第一数据和第二数据进行处理。具体的，当所述第一指示信息的取值为第一取值时，丢弃所述第一数据，使得所述第一数据不参与HARQ合并，以避免被抢占的数据“污染”第二数据，从而影响对第二数据的译码；当系统消息中不包括第一指示信息或第一指示信息取值为第二取值时，保留第一数据，并将第一数据与第二数据进行HARQ合并后再对竞争解决消息进行译码。
当步骤301中的系统消息中包括第四指示信息时，UE根据第四指示信息对第一数据和第二数据进行处理。具体的，UE判断所述可能被抢占的资源块与第一时频资源之间是否有重叠的资源：如果有重叠的资源，则说明用于第一时频资源可能被部分或全部抢占，则UE 将所述重叠的资源中的数据从缓存中剔除或丢弃；如果没有重叠的资源，则终端在缓存中保留在所述第一时频资源上接收到的所述第一数据，并将第一数据与第二数据进行HARQ合并后再对竞争解决消息进行译码。
可以理解的是，基站可以通过PDCCH中的DCI将第一时频资源和第二时频资源通知给UE。
需要说明的是，本实施例中，UE可以在接收第一数据之后在接收第二数据之前，判断第一时频资源被抢占；或者，UE可以在在接收第二数据之后再判断所述第一时频资源被抢占。本实施例对UE判断第一时频资源被抢占的时间点不做具体限制。
本实施例还可以包括图4中的步骤104或105，使得UE可以通过接收来自基站的第二指示信息，从而知道所述公共传输资源被抢占；或者UE可以通过接收来自基站的第三指示信息，从而知道被抢占的公共传输资源的资源块信息。
本实施例提供的方法，当随机接入过程中用于传输竞争解决消息的资源被其它业务数据抢占时，基站重传竞争解决消息，并指示公共传输资源可能被抢占或可能被抢占的资源块信息；或者具体指示公共传输资源已经被抢占或已经被抢占的资源块信息，使得这种场景下的竞争解决消息的初传数据不参与HARQ合并，以避免被抢占的传输资源上传输的其它业务的数据“污染”竞争解决消息的重传数据。本方法可以有效提高竞争解决消息的译码成功率。
另外，本实施例提供的数据传输方法不仅可以应用MSG4的传输资源被抢占时的处理，还可以应用于随机接入过程中的MSG2的传输资源被抢占时的处理。
具体地，如果MSG2的传输资源被URLLC业务抢占，则基站可以进行第二次MSG2的发送。在接收端，如果UE对MSG2的业务数据译码失败，则继续进行MSG2的检测和接收，直到UE接收到MSG2的数据或者在MSG2的监听窗时间结束为止。MSG2的初传数据是否参与HARQ合并，可以根据上述第一指示信息、第二指示信息、第三指示信息和第四指示信息中的一个或多个来确定。
另外，需要说明的是，本申请的各个实施例中所述的公共传输资源被其它业务数据抢占，可以是URLLC业务数据抢占寻呼消息、系统消息和竞争解决消息的传输资源，也可以是URLLC业务数据抢占eMBB业务数据的传输资源，还可以是同一种业务类型中高优先级的业务抢占低优先级业务的传输资源。
可以理解地，本申请上述各个实施例中，所述公共传输资源被抢占的情况，可扩展至因为各种原因导致基站没有成功发送数据的情景，同时被抢占可以理解成基站由于某种原因无法在预定的时频资源上发送预定的数据，例如：
a.用于传输下行数据的时域资源中的部分时隙或者符号被更改为上行时隙或者符号，使得基站无法向UE发送数据。
b.对于在非授权频谱中的数据传输，由于基站需要采用先侦听后发送的机制，该机制规定只有在对信道侦听结果为空闲时，基站才能够向UE发送数据，如果信道侦听的结果不为空闲，则不能发送数据，进而在所述侦听结果不为空闲的情况下，使得基站在预定时间内无法获得非授权频谱资源，将导致所述基站无法向UE发送数据。
下面介绍与上述各方法实施例对应的装置实施例。
参见图9，为本申请实施例提供的一种通信装置的结构示意图。所述装置可以是前述 实施例中的终端，也可以是应用于终端的芯片，用于实现前述方法实施例中图4所示的数据传输方法。
如图9所示，所述通信装置包括接收单元901和处理单元902。
进一步地，接收单元901，用于接收来自网络设备的系统消息，所述系统消息中包括第一指示信息，所述第一指示信息用于指示公共传输资源是否有被抢占的可能性。
接收单元901，还用于在第一时域资源上接收第一消息；以及，当在所述第一时域资源上未成功接收到所述第一消息，且所述第一指示信息指示的公共传输资源有被抢占的可能性，在第二时域资源上接收所述第一消息。
处理单元902，用于检测是否成功接收所述第一消息，以及根据所述第一指示信息判断公共传输资源是否被抢占等。
其中，可选的，所述第一消息为寻呼消息或广播消息。
可选的，在本实施例的一种具体的实现方式中，在所述第二时域资源上接收的所述第一消息所使用的HARQ的冗余版本号为0或3。
可选的，在所述第一消息为寻呼消息的条件下，所述第二时域资源与所述第一时域资源之间间隔的预设时长小于第一阈值。
可选的，所述第一阈值为所述寻呼消息的寻呼周期。
可选的，在本实施例的另一种具体的实现方式中，接收单元901，还用于接收来自所述网络设备的第二指示信息，所述第二指示信息用于指示所述公共传输资源被抢占。
可选的，在本实施例的又一种具体的实现方式中，接收单元901，还用于接收来自所述网络设备的第三指示信息，所述第三指示信息用于指示被抢占的公共传输资源的资源块信息。
另外，有关上述接收单元901和处理单元902更详细的描述可以直接参考上述图4所述方法实施例中终端的相关描述直接得到，此处不加赘述。
此外，本实施例提供的通信装置还可以用于实现本申请实施例的图8所示的数据传输方法，具体地，图9所示的装置中，接收单元901用于接收来自网络设备的系统消息，所述系统消息中包括第一指示信息，所述第一指示信息用于指示公共传输资源是否有被抢占的可能性。
可选的，所述第一指示信息的取值包括第一取值，所述第一取值用于指示所述公共传输资源有被抢占的可能性。
可选的，所述第一指示信息的取值还包括第二取值，所述第二取值用于指示所述公共传输资源没有被抢占的可能性。
接收单元901，还用于在第一时频资源上接收来自所述网络设备第一数据，所述第一数据为竞争解决消息的初传数据；处理单元902，用于在第一时频资源上检测是否接收到所述第一数据，以及对所述竞争解决消息的数据信息进行解调和译码等；接收单元901，还用于当处理单元902对所述竞争解决消息失败的条件下时，在第二时频资源上接收所述网络设备重传的第二数据，所述第二数据为竞争解决消息的重传数据；处理单元902，还用于在根据所述第一指示信息对所述第一数据和第二数据进行处理。
可选的，在本实施例的一种具体的实现方式中，处理单元902具体用于当所述第一指示信息的取值为第一取值时，丢弃所述第一数据，仅对所述第二数据进行解调和译码，使 得所述第一数据不参与HARQ的合并。
可选的，在本实施例的一种具体的实现方式中，所述装置还包括发送单元903，所述发送单元903用于在处理单元902检测对第一数据译码错误时向基站发送NACK。
本实施例中，当随机接入过程中的竞争解决消息被其它业务抢占后，接收重传的所述竞争解决消息，使得终端在对数据解调和合并的过程中，将首次传输中第一数据所对应的缓存数据清除，避免“污染”其它正确接收的数据。
可选的，在另一种实现方式中，该装置还用于：接收来自网络设备的系统消息，所述系统消息中包括第四指示信息，所述第四指示信息用于指示公共传输资源中可能被抢占的传输资源的资源块信息；在第一时频资源上接收来自所述网络设备的第一数据，所述第一数据为竞争解决消息的初传数据；当在第一时频资源上接收的竞争解决消息译码错误的条件下，在第二时频资源上接收第二数据，所述第二数据为所述竞争解决消息的重传数据；根据所述第一指示信息对所述第一数据和第二数据进行处理。
其中，所述资源块信息包括：时域信息、频域信息、时域信息和频域信息，所述时域信息用于指示被抢占的资源的频域位置，所述时域信息用于指示被抢占的资源的时域位置。
可选的，所述根据所述第四指示信息对所述第一数据和第二数据进行处理包括：终端判断所述可能被抢占的资源块与第一时频资源之间是否有重叠的资源：如果有重叠的资源，则说明第一时频资源可能被部分或全部抢占，终端将所述重叠的资源中的数据从缓存中剔除或丢弃；如果没有重叠的资源，则终端在缓存中保留在所述第一时频资源上接收到的所述第一数据，使得所述可能被抢占的资源上的第一数据不参与所述竞争解决消息的HARQ合并，防止可能被抢占资源上的数据对业务数据造成潜在的“污染”，从而能够有效提高对竞争解决消息的译码成功率。
可选的，所述第二数据所使用的HARQ的冗余版本为0或3。
另外，本申请实施例还提供了一种通信装置，所述装置可以是前述实施例中的网络设备，也可以是应用于网络设备的芯片，用于实现前述方法实施例中图4所示的数据传输方法。如图9所示，所述通信装置还包括发送单元903。
进一步地，发送单元903，用于发送系统消息，所述系统消息中包括第一指示信息，所述第一指示信息用于指示公共传输资源是否有被抢占的可能性。
发送单元903，还用于在第一时域资源上发送第一消息；处理单元902，用于根据所述第一指示信息判断公共传输资源是否被抢占；发送单元903，还用于当传输所述第一消息的传输资源全部或部分被抢占时，在第二时域资源上发送所述第一消息，所述第一消息的传输资源为所述公共传输资源中的部分或全部。
其中，所述第一消息为寻呼消息或广播消息。
可选的，在所述第一消息为寻呼消息的条件下，所述第二时域资源与所述第一时域资源之间间隔的预设时长小于第一阈值。进一步地，所述第一阈值为所述寻呼消息的寻呼周期。
另外，有关上述处理单元902和发送单元903更详细的描述可以直接参考上述图4中所述方法实施例中网络设备，比如UE的相关描述直接得到，此处不再赘述。
此外，本实施例提供的装置还可以用于实现本申请实施例的图8所示的数据传输方法， 具体地，图9所示的装置中，发送单元903用于发送系统消息，所述系统消息中包括第一指示信息，所述第一指示信息用于指示公共传输资源是否有被抢占的可能性。
发送单元903，还用于在第一时频资源上发送第一数据，所述第一数据为竞争解决消息的初传数据；以及，当接收来自UE反馈的NACK时，在第二时频资源上向所述UE发送第二数据，所述第二数据为所述竞争解决消息的重传数据。
其中，所述第一指示信息的取值包括第一取值，所述第一取值用于指示所述公共传输资源有被抢占的可能性。
可选的，所述第一指示信息的取值还包括第二取值，所述第二取值用于指示所述公共传输资源没有被抢占的可能性。
可选的，在本实施例的一种具体的实现方式中，所述第二数据所使用的HARQ的冗余版本号为0或3。
参见图10，本申请实施例还提供了一种硬件设备，用于实现前述实施例所述的数据传输方法。该硬件设备包括：收发器1001和处理器1002。其中，处理器1002用于执行上述处理单元902的功能，收发器1001用于执行上述接收单元901和发送单元903的功能。
其中，所述硬件设备还包括存储器1003，用于存储传输过程中的各种消息，以及计算机程序指令等。
可选的，所述硬件设备可以为一种芯片系统，所述芯片系统包括处理器和接口电路，所述接口电路与所述处理器耦合，所述处理器用于执行计算机程序或指令，以实现前述各个实施例中的方法；所述接口电路用于与所述芯片系统之外的其它模块进行通信。另外，所述芯片系统还可以是具备上述通信装置功能的其它设备或装置。
可以理解的是，本申请的实施例中的处理器可以是中央处理单元(central processing unit，CPU)，还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现场可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件，硬件部件或者其任意组合。通用处理器可以是微处理器，也可以是任何常规的处理器。
收发器1001可以包括接收机、发射机与天线等部件；用于接收各种消息，比如系统消息，寻呼消息或广播信息等，以及与外部网络设备建立通信连接，并进行数据传输。可以理解的是，收发器1001可以为收发电路或输入输出接口。
具体地，收发器1001可以包括无线局域网(wireless local area network，WLAN)模块、蓝牙模块、基带(base band)模块等通信模块，以及该通信模块对应的射频(radio frequency，RF)电路，用于进行无线局域网络通信、蓝牙通信、红外线通信和/或蜂窝通信。所述收发模块可以支持直接内存存取(direct memory access)。
本申请的实施例中的方法步骤可以通过硬件的方式来实现，也可以由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器(random access memory，RAM)、闪存、只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)、寄存器、硬盘、移动硬盘、CD-ROM或者本领域熟知的任何其它形式的存储介质中。
一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于网络设备或终端设备中。当然，处理器和存储介质也可以作为分立组件存在于发送设备或接收设备中。
另外，本申请的实施例还提供了一种计算机程序产品，所述计算机程序产品包括计算机指令，当所述指令并执行时，可实现前述各个实施例中的数据传输方法。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机程序或指令。在计算机上加载和执行所述计算机程序或指令时，全部或部分地执行本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机程序或指令可以存储在计算机可读存储介质中，或者通过所述计算机可读存储介质进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是集成一个或多个可用介质的服务器等数据存储设备。所述可用介质可以是磁性介质，例如，软盘、硬盘、磁带；也可以是光介质，例如，DVD；还可以是半导体介质，例如，固态硬盘(solid state disk，SSD)。
在本申请的各个实施例中，如果没有特殊说明以及逻辑冲突，不同的实施例之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A,B可以是单数或者复数。在本申请的文字描述中，字符“/”，一般表示前后关联对象是一种“或”的关系。
可以理解的是，在本申请的实施例中涉及的各种数字编号仅为描述方便进行的区分，并不用来限制本申请的实施例的范围。上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定。

Claims (20)

  1. 一种数据传输方法，其特征在于，所述方法包括：
    接收来自网络设备的系统消息，所述系统消息中包括第一指示信息，所述第一指示信息用于指示公共传输资源是否有被抢占的可能性；
    在第一时域资源上接收第一消息；
    当在所述第一时域资源上未成功接收到所述第一消息，且所述第一指示信息指示所述公共传输资源有被抢占的可能性时，在第二时域资源上接收所述第一消息。
  2. 根据权利要求1所述的方法，其特征在于，
    所述第一指示信息的取值包括第一取值，所述第一取值用于指示所述公共传输资源有被抢占的可能性。
  3. 根据权利要求2所述的方法，其特征在于，
    所述第一指示信息的取值还包括第二取值，所述第二取值用于指示所述公共传输资源没有被抢占的可能性。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述方法还包括：
    接收来自所述网络设备的第二指示信息，所述第二指示信息用于指示所述公共传输资源被抢占。
  5. 根据权利要求1至3中任一项所述的方法，其特征在于，所述方法还包括：
    接收来自所述网络设备的第三指示信息，所述第三指示信息用于指示被抢占的公共传输资源的资源块信息。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，在所述第二时域资源上接收的所述第一消息所使用的混合自动重传请求HARQ的冗余版本号为0或3。
  7. 根据权利要求1至6中任一项所述的方法，其特征在于，所述第一消息为寻呼消息或广播消息。
  8. 根据权利要求7所述的方法，其特征在于，
    在所述第一消息为寻呼消息的条件下，所述第二时域资源与所述第一时域资源之间间隔的预设时长小于第一阈值，所述第一阈值为所述寻呼消息的寻呼周期。
  9. 一种数据传输方法，其特征在于，所述方法包括：
    发送系统消息，所述系统消息中包括第一指示信息，所述第一指示信息用于指示公共传输资源是否有被抢占的可能性；
    在第一时域资源上发送第一消息；
    当传输所述第一消息的传输资源部分或全部被抢占时，在第二时域资源上发送所述第一消息，其中，所述传输所述第一消息的传输资源为所述公共传输资源中的部分或全部。
  10. 根据权利要求9所述的方法，其特征在于，
    所述第一指示信息的取值包括第一取值，所述第一取值用于指示所述公共传输资源有被抢占的可能性。
  11. 根据权利要求10所述的方法，其特征在于，
    所述第一指示信息的取值还包括第二取值，所述第二取值用于指示所述公共传输资源没有被抢占的可能性。
  12. 根据权利要求9至11中任一项所述的方法，其特征在于，所述方法还包括：
    发送第二指示信息，所述第二指示信息用于指示所述公共传输资源被抢占。
  13. 根据权利要求9至11中任一项所述的方法，其特征在于，所述方法还包括：
    发送第三指示信息，所述第三指示信息用于指示被抢占的公共传输资源的资源块信息。
  14. 根据权利要求9至13中任一项所述的方法，其特征在于，在所述第二时域资源上发送的所述第一消息使用的混合自动重传请求HARQ的冗余版本号为0或3。
  15. 根据权利要求9至14中任一项所述的方法，其特征在于，所述第一消息为寻呼消息或广播消息。
  16. 根据权利要求15所述的方法，其特征在于，
    在所述第一消息为寻呼消息的条件下，所述第二时域资源与所述第一时域资源之间间隔的预设时长小于第一阈值，所述第一阈值为所述寻呼消息的寻呼周期。
  17. 一种通信装置，其特征在于，包括用于执行如权利要求1至16中任一项所述方法的功能单元。
  18. 一种通信装置，包括处理器，所述处理器与存储器耦合，其特征在于，
    所述存储器，用于存储指令；
    所述处理器，用于执行所述存储器中的指令，使得所述通信装置执行如权利要求1至16中任一项所述的方法。
  19. 一种计算机可读存储介质，所述存储介质中存储有指令，其特征在于，
    当所述指令被运行时，实现如权利要求1至16中任一项所述的方法。
  20. 一种芯片系统，其特征在于，所述芯片系统包括处理器和接口电路，所述接口电路与所述处理器耦合，
    所述处理器用于执行计算机程序或指令，以实现如权利要求1至16中任一项所述的方法；
    所述接口电路用于与所述芯片系统之外的其它模块进行通信。
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