WO2018201915A1 - 数据处理方法和装置 - Google Patents

数据处理方法和装置 Download PDF

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Publication number
WO2018201915A1
WO2018201915A1 PCT/CN2018/083798 CN2018083798W WO2018201915A1 WO 2018201915 A1 WO2018201915 A1 WO 2018201915A1 CN 2018083798 W CN2018083798 W CN 2018083798W WO 2018201915 A1 WO2018201915 A1 WO 2018201915A1
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Prior art keywords
time
cbg
frequency resource
data
time domain
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PCT/CN2018/083798
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English (en)
French (fr)
Inventor
杜白
彭金磷
董朋朋
张鹏
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华为技术有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056Systems characterized by the type of code used
    • H04L1/0057Block codes
    • H04L1/0058Block-coded modulation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058Allocation criteria

Definitions

  • the present application relates to communication technologies, and in particular, to a data processing method and apparatus.
  • the fifth-generation mobile communication (5th-generation, 5G) system supports more services, such as 5G systems supporting enhanced mobile broadband (eMBB) services and ultra reliable and low latency communications (ultra reliable and low latency communications).
  • eMBB enhanced mobile broadband
  • ultra reliable and low latency communications ultra reliable and low latency communications
  • URLLC business and mass machine type communications
  • Different services have different requirements for communication systems. How to better support the data transmission requirements of multiple different services at the same time is a technical problem that the 5G system needs to solve at present. For example, how to support both URLLC service and eMBB service is one of the discussion hotspots of current 5G mobile communication systems.
  • the generation of data packets of the URLLC service is bursty and random, and may not generate data packets for a long period of time, or may generate multiple data packets in a short time. If the base station allocates resources for the URLLC service by using reserved resources, the system resources are wasted when there is no URLLC service.
  • the eMBB service has a relatively large amount of data, and the transmission rate is relatively high. Usually, a long time scheduling unit is used for data transmission to improve transmission efficiency. In order to improve the utilization of communication system resources, the base station usually does not reserve resources for downlink data transmission of the URLLC service.
  • the base station may allocate resources for URLLC service data in a preemption manner.
  • the preemption means that the base station selects part or all of the time-frequency resources for transmitting the URLLC service data on the time-frequency resources that have been allocated for transmitting the eMBB service data, and the base station is used for transmitting the time-frequency resources of the URLLC service data. Does not send data for eMBB services.
  • the base station needs to notify the terminal device of the preempted time-frequency resource (also referred to as the time-frequency resource of the punctured location).
  • the base station when transmitting downlink data, when a base station has a large transport block (TB), the base station divides the TB into multiple code blocks (CBs) and divides multiple CBs into multiple codes.
  • CBs code blocks
  • a block group (CBG) which then encodes and modulates each CBG onto a time-frequency resource.
  • each CBG in the existing method cannot guarantee that the mapping is in a complete time-domain symbol. For example, data of two CBGs on a time domain symbol may be present.
  • the correct reception of data of the two CBGs is affected at the same time, which may result in two The retransmission of CBG data reduces the efficiency of data transmission.
  • the present application provides a data processing method and apparatus, which can effectively improve the transmission efficiency of eMBB service data.
  • the first aspect of the present application provides a data processing method, including:
  • the first device determines, according to the size of the transport block TB, the CB number C obtained after the coding block CB segmentation of the TB;
  • the first device Determining, by the first device, the data used to carry the each CBG in the first time-frequency resource according to the number of CBs included in each CBG and the number of time domain symbols in the first time-frequency resource.
  • the number of time domain symbols, wherein the first time-frequency resource is a time-frequency resource for carrying data of the TB;
  • the first device maps data of each CBG to the first time-frequency resource according to the number of time domain symbols used to carry data of each CBG.
  • the first device determines, according to the number of CBs included in each CBG and the number of time domain symbols in the first time-frequency resource, that the first time-frequency resource is used for carrying The number of time domain symbols of the data of each CBG, including:
  • the first device calculates, according to the following formula, the number of time domain symbols used to carry data of each CBG in the first time-frequency resource:
  • N i represents the number of time domain symbols used to carry the data of the i-th CBG in the first time-frequency resource
  • C i represents the number of CBs included in the i-th CBG
  • m represents the number of CBs included in the TB.
  • the number of CBGs, where N is the number of time domain symbols in the first time-frequency resource, and floor represents the largest integer that is not greater than the input value.
  • the first device determines the number of CBs included in each CBG according to the number of the coded block groups CBG and the number of CBs that are included in the TB that are obtained in advance, including:
  • C represents the number of CBs
  • m represents the number of CBGs included in the TB
  • floor represents the largest integer that is not greater than the input value
  • the first ⁇ or the last ⁇ CBGs in the m CBGs include C ⁇ +1 CBs, and the remaining CBGs include C ⁇ CBs.
  • a second aspect of the present application provides a data processing method, including:
  • the second device receives the transport block TB sent by the first device
  • the second device determines, according to the size of the TB, a CB number C obtained by performing coding block CB segmentation on the TB;
  • the second device Determining, by the second device, the data used to carry the CBG in the first time-frequency resource according to the number of CBs included in each CBG and the number of time domain symbols in the first time-frequency resource.
  • the number of time domain symbols, wherein the first time-frequency resource is a time-frequency resource for carrying data of the TB;
  • the second device decodes the data of each CBG from the first time-frequency resource according to the number of time domain symbols used to carry the data of each CBG.
  • the second device determines, according to the number of CBs included in each CBG and the number of time domain symbols in the first time-frequency resource, that the first time-frequency resource is used for carrying The number of time domain symbols of the data of each CBG, including:
  • the second device calculates, according to the following formula, the number of time domain symbols used to carry data of each CBG in the first time-frequency resource:
  • N i represents the number of time domain symbols used to carry the data of the i-th CBG in the first time-frequency resource
  • C i represents the number of CBs included in the i-th CBG
  • m represents the number of CBs included in the TB.
  • the number of CBGs, where N is the number of time domain symbols in the first time-frequency resource, and floor represents the largest integer that is not greater than the input value.
  • the second device determines the number of CBs included in each CBG according to the number of CBGs and the number of CBs that are included in the TB that are obtained in advance, including:
  • C represents the number of CBs
  • m represents the number of CBGs included in the TB
  • floor represents the largest integer that is not greater than the input value
  • the first ⁇ or the last ⁇ CBGs in the m CBGs include C ⁇ +1 CBs, and the remaining CBGs include C ⁇ CBs.
  • a third aspect of the present application provides a data processing apparatus, including:
  • a segmentation module configured to determine, according to the size of the transport block TB, a CB number C obtained by coding the block CB segmentation of the TB;
  • a first determining module configured to determine, according to the pre-obtained number of coded block groups CBG included in the TB and the number of CBs, the number of CBs included in each CBG;
  • a second determining module configured to determine, according to the number of CBs included in each CBG and the number of time domain symbols in the first time-frequency resource, to carry the CBG in the first time-frequency resource The number of time domain symbols of the data, where the first time-frequency resource is a time-frequency resource for carrying data of the TB;
  • mapping module configured to map the data of each CBG to the first time-frequency resource according to the number of time domain symbols used to carry the data of each CBG.
  • the second determining module is specifically configured to:
  • N i represents the number of time domain symbols used to carry the data of the i-th CBG in the first time-frequency resource
  • C i represents the number of CBs included in the i-th CBG
  • m represents the number of CBs included in the TB.
  • the number of CBGs, where N is the number of time domain symbols in the first time-frequency resource, and floor represents the largest integer that is not greater than the input value.
  • the first determining module is specifically configured to:
  • C represents the number of CBs
  • m represents the number of CBGs included in the TB
  • floor represents the largest integer that is not greater than the input value
  • the first ⁇ or the last ⁇ CBGs in the m CBGs include C ⁇ +1 CBs, and the remaining CBGs include C ⁇ CBs.
  • a fourth aspect of the present application provides a data processing apparatus, including:
  • a receiving module configured to receive a transport block TB sent by the first device
  • a segmentation module configured to determine, according to the size of the TB, a CB number C obtained by performing coding block CB segmentation on the TB;
  • a first determining module configured to determine, according to the pre-obtained number of coded block groups CBG included in the TB and the number of CBs, the number of CBs included in each CBG;
  • a second determining module configured to determine, according to the number of CBs included in each CBG and the number of time domain symbols in the first time-frequency resource, to carry the CBG in the first time-frequency resource The number of time domain symbols of the data, where the first time-frequency resource is a time-frequency resource for carrying data of the TB;
  • a decoding module configured to decode the data of each CBG from the first time-frequency resource according to the number of time domain symbols used to carry the data of each CBG.
  • the second determining module is specifically configured to:
  • N i represents the number of time domain symbols used to carry the data of the i-th CBG in the first time-frequency resource
  • C i represents the number of CBs included in the i-th CBG
  • m represents the number of CBs included in the TB.
  • the number of CBGs, where N is the number of time domain symbols in the first time-frequency resource, and floor represents the largest integer that is not greater than the input value.
  • the first determining module is specifically configured to:
  • C represents the number of CBs
  • m represents the number of CBGs included in the TB
  • floor represents the largest integer that is not greater than the input value
  • the first ⁇ or the last ⁇ CBGs in the m CBGs include C ⁇ +1 CBs, and the remaining CBGs include C ⁇ CBs.
  • a fifth aspect of the present application provides a data processing apparatus including a processor, a memory, and a communication interface, wherein the memory is configured to store an instruction, the communication interface is configured to communicate with another device, and the processor is configured to execute the memory Store the instructions to perform the methods described below, specifically:
  • the processor is used to:
  • the first time-frequency resource is a time-frequency resource for carrying data of the TB
  • the processor is specifically configured to:
  • N i represents the number of time domain symbols used to carry the data of the i-th CBG in the first time-frequency resource
  • C i represents the number of CBs included in the i-th CBG
  • m represents the number of CBs included in the TB.
  • the number of CBGs, where N is the number of time domain symbols in the first time-frequency resource, and floor represents the largest integer that is not greater than the input value.
  • the processor is specifically configured to: calculate a first parameter C ⁇ according to the following formula:
  • C represents the number of CBs
  • m represents the number of CBGs included in the TB
  • floor represents the largest integer that is not greater than the input value
  • the first ⁇ or the last ⁇ CBGs in the m CBGs include C ⁇ +1 CBs, and the remaining CBGs include C ⁇ CBs.
  • a sixth aspect of the present application provides a data processing apparatus including a processor, a memory, and a communication interface, wherein the memory is configured to store an instruction, the communication interface is configured to communicate with another device, and the processor is configured to execute the memory Store the instructions to perform the methods described below, specifically:
  • the communication interface is configured to receive a transport block TB sent by the first device
  • the processor is used to:
  • the first time-frequency resource is a time-frequency resource for carrying data of the TB
  • the processor is specifically configured to:
  • N i represents the number of time domain symbols used to carry the data of the i-th CBG in the first time-frequency resource
  • C i represents the number of CBs included in the i-th CBG
  • m represents the number of CBs included in the TB.
  • the number of CBGs, where N is the number of time domain symbols in the first time-frequency resource, and floor represents the largest integer that is not greater than the input value.
  • the processor is specifically configured to:
  • Determining the number of CBs included in each CBG according to the number of CBGs included in the TB and the number of the CBs obtained in advance including:
  • C represents the number of CBs
  • m represents the number of CBGs included in the TB
  • floor represents the largest integer that is not greater than the input value
  • the first ⁇ or the last ⁇ CBGs in the m CBGs include C ⁇ +1 CBs, and the remaining CBGs include C ⁇ CBs.
  • the CB number C is a minimum integer that satisfies the following two conditions, where
  • the CB number C is a minimum integer that satisfies the following three conditions, where
  • a seventh aspect of the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the methods of the first aspect and the various possible designs of the first aspect.
  • An eighth aspect of the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the methods of the various possible designs of the second and second aspects described above.
  • a ninth aspect of the present application provides a computer readable storage medium having stored therein instructions that, when executed on a computer, cause the computer to perform various possible aspects of the first aspect and the first aspect described above The method in the design.
  • a tenth aspect of the present application provides a computer readable storage medium having stored therein instructions that, when executed on a computer, cause the computer to perform various possible aspects of the second aspect and the second aspect described above The method in the design.
  • the first device determines the CB number C obtained by CB segmentation of the TB according to the size of the TB, and determines each according to the number of CBGs and the number of CBs included in the TB acquired in advance.
  • the number of CBs included in the CBG and then determining the time for carrying the data of each CBG in the first time-frequency resource according to the number of CBs included in each CBG and the number of time domain symbols in the first time-frequency resource.
  • the number of domain symbols, and finally the data of each CBG is mapped to the first time-frequency resource according to the number of time-domain symbols used to carry data of each CBG.
  • each CBG is mapped onto one or more complete time domain symbols. Since each CBG data is mapped to one or more complete time domain symbols, there is no data of two CBGs on one time domain symbol, so when the URLLC service data preempts the time-frequency resources of the eMBB service data. At the same time, the resource that preempts a certain time domain symbol only affects the transmission of a certain CBG, and does not affect the transmission of the two CBGs at the same time, thereby effectively improving the transmission efficiency of the eMBB service data.
  • FIG. 1 is a schematic structural diagram of a communication system to which the present application is applied;
  • FIG. 2 is a schematic diagram of URLLC service data preemption for time-frequency resources for transmitting eMBB service data
  • 3 is a schematic diagram of a conventional resource mapping
  • FIG. 5 is a flowchart of a data processing method according to Embodiment 1;
  • Embodiment 6 is a flowchart of a data processing method provided by Embodiment 2;
  • Embodiment 8 is a flowchart of a data processing method provided in Embodiment 4.
  • FIG. 9 is a schematic structural diagram of a data processing apparatus according to Embodiment 5.
  • FIG. 10 is a schematic structural diagram of a data processing apparatus according to Embodiment 6; FIG.
  • FIG. 11 is a schematic structural diagram of a data processing apparatus provided in Embodiment 7.
  • FIG. 12 is a schematic structural diagram of a data processing apparatus according to Embodiment 8.
  • FIG. 1 is a schematic structural diagram of a communication system to which the present application is applicable.
  • the communication system includes an access network.
  • the number of devices and terminal devices may be one or more.
  • the communication system may be a long term evolution (LTE) system, a 5G system, or a wireless-fidelity (WIFI) system.
  • the access network device may be an evolved NodeB (eNB) or a relay station in the LTE system, or may be a base station in the 5G system, an access point (AP) in the WiFi system, or the like. This is not limited here.
  • eNB evolved NodeB
  • AP access point
  • the terminal device may also be called a terminal, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), or the like.
  • the terminal device can be a mobile phone, a tablet, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, industrial control (industrial control) Wireless terminal, wireless terminal in self driving, wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless in transport safety
  • the terminal, the wireless terminal in the smart city, the wireless terminal in the smart home, and the like are not limited herein.
  • the access network device and the terminal device and between the terminal device and the terminal device can communicate through a licensed spectrum, or can communicate through an unlicensed spectrum, or can simultaneously pass the licensed spectrum and the license-free.
  • the spectrum communicates.
  • the access network device and the terminal device and the terminal device and the terminal device can communicate through the spectrum below 6G, or can communicate through the spectrum of 6G or higher, and can simultaneously use the spectrum below 6G and the spectrum above 6G. Communication.
  • the embodiment of the present application does not limit the spectrum resources used between the access network device and the terminal device.
  • typical eMBB services include: ultra-high definition video, AR, VR, etc.
  • the main features of these services are large amount of transmitted data and high transmission rate.
  • Typical URLLC services include wireless control in industrial manufacturing or production processes, motion control for driverless cars and drones, and tactile interaction applications such as remote repair and remote surgery.
  • the main features of these services are ultra-high reliability. Low latency, low data transfer and burstiness.
  • Typical mMTC services include: smart grid distribution automation, smart city, etc. The main features are huge number of networked devices, small amount of transmitted data, and insensitive data transmission delay. These mMTC terminals need to meet low cost and very long standby. The demand for time.
  • the generation of data packets of the URLLC service is bursty and random, and may not generate data packets for a long period of time, or may generate multiple data packets in a short time.
  • the packets of the URLLC service are in most cases small packets, for example 50 bytes.
  • the characteristics of the data packets of the URLLC service affect the way resources are allocated by the communication system.
  • the resources herein include but are not limited to: time domain symbols, frequency domain resources, time-frequency resources, codeword resources, and beam resources.
  • the allocation of system resources is performed by the base station. The following uses a base station as an example for description. If the base station allocates resources for the URLLC service by using reserved resources, the system resources are wasted when there is no URLLC service. Moreover, the short delay feature of the URLLC service requires that the data packet is transmitted in a very short time, so the base station needs to reserve a sufficient bandwidth for the URLLC service, thereby causing a serious drop in system resource utilization.
  • the data volume of the eMBB service is relatively large, and the transmission rate is relatively high.
  • a longer time scheduling unit is used for data transmission to improve transmission efficiency.
  • one time slot of 15 kHz subcarrier spacing is used, corresponding to seven time domain symbols, corresponding to The length of time is 0.5ms.
  • the URLLC service data usually adopts a shorter time scheduling unit to meet the requirements of ultra-short delay, for example, two time domain symbols with 15 kHz subcarrier spacing, or one time slot with 60 kHz subcarrier spacing, corresponding to seven time slots.
  • the domain symbol, the corresponding length of time is 0.125ms.
  • the base station Due to the burstiness of the data of the URLLC service, in order to improve the resource utilization of the communication system, the base station usually does not reserve resources for downlink data transmission of the URLLC service.
  • the base station cannot wait for the scheduled transmission of the eMBB service data to complete the URLLC service data, in order to meet the ultra-short delay requirement of the URLLC service. .
  • the base station may allocate resources for URLLC service data in a preemption manner.
  • the preemption here means that the base station selects part or all of the time-frequency resources for transmitting the URLLC service data on the time-frequency resources that have been allocated for transmitting the eMBB service data, and the base station is used for transmitting the time-frequency resources of the URLLC service data. Does not send data for eMBB services.
  • 2 is a schematic diagram of URLLC service data preemption for time-frequency resources for transmitting eMBB service data. As shown in FIG. 2, the horizontal axis represents time, the vertical axis represents frequency, and the shaded area of FIG. 2 is allocated for transmission of eMBB.
  • the time-frequency resource of the service data, the shaded area of the vertical line is the time-frequency resource of the URLLC service data preemption, that is, the URLLC service data preempts the resources of the third and fourth time domain symbols in one time slot.
  • the time-frequency resource preempted by the URLLC service data is equivalent to a hole in the time-frequency resource of the eMBB service data. Therefore, the time-frequency resource preempted by the URLLC service data is also called the time-frequency resource of the punch location.
  • the base station needs to notify the terminal device of the time-frequency resource of the punctured location. If the existing resource mapping method is adopted, the indication of the time-frequency resource of the punched position is very complicated.
  • the base station uses TB as the smallest unit of data transmission. When the TB is large, the base station divides the TB into multiple CBs, adds a CRC for each CB, and then performs operations for each CB encoding, rate matching, and resource mapping. After sending it out.
  • FIG. 3 is a schematic diagram of a conventional resource mapping. As shown in FIG. 3, the horizontal axis represents the time domain and the vertical axis represents the frequency domain.
  • the time domain resource allocated in the current transmission process is shown in the time domain, specifically, one slot, the slot includes 7 symbols, that is, symbols 0 to 6; the transmission is shown in the frequency domain.
  • FIG. 3 illustrates that the TB transmitted during the current transmission includes six CBs, that is, CB1 to CB6. As shown in FIG. 3, each CB is not a complete symbol after being mapped to a time-frequency resource.
  • the symbols in the present application unless otherwise specified, refer to time domain symbols, such as orthogonal frequency division multiplexing (OFDM) symbols.
  • OFDM orthogonal frequency division multiplexing
  • the URLLC based on the symbol transmission can only preempt one or more CBs, and the time-frequency resource indication of the punch location is simple.
  • all CBs may be divided into several CBGs. If each CBG is encoded and modulated, it can be mapped to time-frequency resources corresponding to several complete symbols (referred to as CBG in box). Bringing a lot of convenience to scheduling.
  • the URLLC sent based on the mini-slot can only preempt a CBG, and the time frequency of the punched position.
  • the resource indication is simple, where a mini-slot includes one or more time domain symbols.
  • a mini-slot includes one or more time domain symbols.
  • only one CBG needs to be mapped into one or more symbols.
  • Each CB in the CBG may occupy a complete symbol or may occupy an incomplete symbol.
  • 4 is a schematic diagram of CBG mapping. As shown in FIG. 4, the TB is divided into three CBGs: CBG1, CBG2, and CBG3.
  • the TB occupies 7 symbols: symbol 0 to symbol 6, and all three CBGs occupy the complete symbol.
  • CBG1 occupies two symbols: symbol 0 and symbol 1
  • CBG2 occupies two symbols: symbol 2 and symbol 3
  • CBG3 occupies three symbols: symbol 4, symbol 5, and symbol 6.
  • CBG1 includes two CBs: CB1 and CB2
  • CBG2 includes two CBs: CB3 and CB4
  • CBG3 includes two CBs: CB5 and CB6,
  • CB1 occupies symbol 0,
  • CB2 occupies symbol 1
  • CB3 occupies symbol 2
  • CB4 occupies symbol 3.
  • CB5 occupies the portion of symbol 4 and symbol 5, and CB6 occupies part of the resource of symbol 5 and symbol 6.
  • a complete symbol referred to in this application refers to a complete symbol within a resource allocated to a UE or a communication link or a data transmission, rather than a complete symbol on the system bandwidth.
  • the system bandwidth is 20 MHz and the UE is allocated 10 MHz. So complete or not only discussed on the allocated 10MHz resources.
  • the above effects can also be referred to as symbol alignment. If you replace all of the above symbols with mini-slot, you can also call it mini-slot alignment, or collectively called resource alignment.
  • the number of CBGs included in the TB is greater than the number of resources. For example, the number of CBGs is greater than the number of symbols or the number of mini-slots. In this case, the resource alignment indicates that only one symbol is included in a symbol or a mini-slot. CBG.
  • the solution of the present application may be applicable to downlink signal transmission, uplink transmission, and device to device (D2D) signaling.
  • the sending device is an access network device
  • the corresponding receiving device is a terminal device.
  • the sending device is a terminal device
  • the corresponding receiving device is an access network device.
  • the transmitting device is a terminal device
  • the corresponding receiving device is also a terminal device.
  • the transmission direction of the signal of the embodiment of the present application is not limited.
  • FIG. 5 is a flowchart of the data processing method provided in the first embodiment. As shown in FIG. 5, the method provided in this embodiment includes the following steps:
  • Step S101 The first device determines, according to the size of the TB, the CB number C obtained by performing CB segmentation on the TB.
  • the TB size (TBS) is known, and the time domain resource allocated to the TB is also known.
  • the time-frequency resource allocated for the TB is called the first time-frequency. Resource, assuming that the first time domain resource includes N time domain symbols in the time domain, and N is a positive integer.
  • the time domain symbol is the smallest resource unit in the time domain.
  • the number C of CBs included in the TB is unknown.
  • the maximum value Z of the size of the CB can be set to different values according to different coding modes. For example, for turbo coding, Z can be set to 6144 bits for low density parity check code (LDPC) coding. , Z can be set to 8192 bits. Therefore, C should be satisfied After transformation can be obtained
  • the CB number C is the smallest integer that satisfies the following two conditions:
  • C CBs are divided into m CBGs.
  • N is the number of time domain symbols in the first time-frequency resource, and N may be the number of mini-slots in the first time-frequency resource, where The mini-slot is smaller than the length of one slot in the LTE system.
  • the length of a slot is 0.5 milliseconds (millisecond, ms), and the length of a mini-slot is less than 0.5 ms.
  • a TB is taken as an example to describe how to perform TB segmentation.
  • the method in this embodiment may also be applied to multiple TBs or a part of one TB.
  • multiple TBs When multiple TBs are segmented, it may be After multiple TBs are cascaded, unified segmentation may be performed, or each of the multiple TBs may be segmented separately.
  • Step S102 The first device determines the number of CBs included in each CBG according to the number of CBGs and the number of CBs included in the TB acquired in advance.
  • the number of CBGs included in the TB may also be implicitly determined. For example, when the data transmission mode between the first device and the second device is the CBG mode, and when the number of CBs is greater than or equal to a certain threshold, the value of m is 4; when between the first device and the second device When the data transmission mode is the CBG mode, and when the number of CBs is less than the threshold, m takes a value of 2 or 1.
  • the value of m is 4; when the data transmission between the first device and the second device When the mode is the CBG mode, and when the TBS is less than the threshold, m takes a value of 2 or 1.
  • the number of CBGs included in the TB may also be configured by signaling.
  • the first device may send the determined value of m to the second device by using signaling, where the signaling may be physical layer signaling or radio resource control (RRC) signaling.
  • RRC radio resource control
  • the first device first calculates the first parameter C - according to the following formula:
  • C is the number of CBs
  • m is the number of CBGs included in the TB
  • floor is the largest integer that is not greater than the input value, and floor can be replaced by a round-down operation.
  • the first ⁇ or the last ⁇ CBGs in the m CBGs include C ⁇ +1 CBs, and the remaining CBGs include C ⁇ CBs.
  • the number of CBs included in the CBG calculated by the method is different by one, so that the number of CBs included in each CBG is as uniform as possible, and the probability that each CBG is correctly received is approximately the same, thereby effectively improving data transmission efficiency.
  • Step S103 The first device determines, according to the number of CBs included in each CBG and the number of time domain symbols in the first time-frequency resource, the number of time domain symbols used to carry data of each CBG in the first time-frequency resource.
  • the first time-frequency resource is a time-frequency resource used to carry data of the TB.
  • the first device calculates, according to the following formula, the number of time domain symbols used to carry data of each CBG in the first time-frequency resource:
  • N i represents the number of time domain symbols used to carry the data of the i-th CBG in the first time-frequency resource
  • C i represents the number of CBs included in the i-th CBG
  • m represents the number of CBGs included in the TB.
  • N is the number of time domain symbols in the first time-frequency resource
  • floor represents the largest integer that is not greater than the input value.
  • the number of time domain symbols used to carry the data of the CBG can also be described as the number of time domain symbols occupied by the data of the CBG. Both descriptions in the present application represent the same meaning. In some cases, the appropriate expression can be selected for convenience. the way.
  • the number of time domain symbols occupied by the data of the last CBG can be obtained by subtracting the number of time domain symbols occupied by data of other CBGs by the number N of time domain symbols in the first time-frequency resource, wherein the data of the CBG is obtained.
  • the number of occupied time domain symbols is the number of the time domain symbols used to carry the CBG.
  • Step S104 The first device maps data of each CBG to the first time-frequency resource according to the number of time domain symbols used to carry data of each CBG.
  • the data according to each CBG ie, the sum of the sizes of CBs included in the CBG
  • the time domain symbols of the data used to carry the CBG are determined.
  • the number of the CBG data is encoded and rate matched, and the encoded data is mapped according to the first frequency domain and the time domain.
  • Step S105 The first device sends the TB mapped to the first time-frequency resource to the second device.
  • step S105 is an optional step.
  • the first device determines the CB number C obtained by CB segmentation of the TB according to the size of the TB, and determines the CB included in each CBG according to the number of CBGs and the number of CBs included in the TB acquired in advance. And determining, according to the number of CBs included in each CBG and the number of time domain symbols in the first time-frequency resource, the number of time domain symbols used to carry data of each CBG in the first time-frequency resource. Finally, the data of each CBG is mapped onto the first time-frequency resource according to the number of time-domain symbols used to carry data of each CBG. It is thus ensured that each CBG is mapped onto one or more complete time domain symbols.
  • the time-frequency required for the retransmitted CBG is required.
  • a resource is a complete time domain symbol with little overhead when indicated.
  • the segmentation method of the TB disclosed in step S101 in the first embodiment can be decoupled from the method of the resource mapping method disclosed in steps S102-S103, that is, the segmentation method of the TB can use the existing method, resource mapping.
  • the method uses the resource mapping method disclosed in steps S102-S103; or the segmentation method of TB uses the segmentation method disclosed in step S101, and the resource mapping method uses other methods, such as using an existing resource mapping method.
  • FIG. 6 is a flowchart of a data processing method according to the second embodiment. As shown in FIG. 6, the method provided in this embodiment includes the following steps:
  • Step S201 The first device determines, according to the size of the TB, the CB number C obtained by performing CB segmentation on the TB.
  • step S101 of the foregoing embodiment refers to the segmentation method of the TB disclosed in step S101 of the foregoing embodiment, and the segmentation method of the existing TB may also be adopted.
  • Step S202 The first device determines, according to the number of CBGs included in the TB and the number of time domain symbols in the first time-frequency resource, the number of time domain symbols used to carry data of each CBG, where
  • the time-frequency resource is a time-frequency resource used to carry data of the TB.
  • the correspondence between the number of time domain symbols, the number of CBGs, and the number of time domain symbols used to carry data of each CBG is predefined in a predefined manner, and the subsequent CBGs included according to the TB are used.
  • the number and the number of time domain symbols in the first time-frequency resource are used to query the corresponding relationship, and the number of time domain symbols for carrying data of each CBG is obtained.
  • the number of time domain symbols in the first time-frequency resource is usually 7 or 14, and the number of CBGs is usually greater than 1 and less than or equal to 4.
  • the first two time domain symbols are control channels.
  • the first device determines the number of time domain symbols occupied by the CBG according to the distribution of the mini-slot in the first time-frequency resource. For example, on the 7 time domain symbols, there are three mini-slots, and the three mini-slots occupy 2, 2, and 3 time domain symbols respectively, and then the three CBGs also occupy 2, 2, and 3 time domain symbols respectively.
  • N + and N - of the number of time domain symbols for carrying the data of the CBG are calculated according to the following formula:
  • N is the number of time domain symbols in the first time-frequency resource
  • m is the number of CBGs included in the TB.
  • N may also be the number of mini-slots in the first time-frequency resource.
  • Step S203 The first device determines the number of CBs included in each CBG according to the number of time domain symbols, the number of CBs, and the number of time domain symbols in the first time-frequency resource used to carry data of each CBG.
  • the first device calculates the number of CBs included in each CBG according to the following formula:
  • N i represents the number of time domain symbols used to carry the data of the i th CBG
  • C i represents the number of CBs included in the i th CBG
  • m represents the number of CBGs included in the TB
  • N is the first time frequency.
  • the number of time domain symbols in the resource, and floor indicates the largest integer that is not greater than the input value.
  • CBG includes calculating the number of CB C i, where, floor taken is not greater than the input value represents the maximum integer, each counting the number of CBG includes a CB, C is updated after each calculation CC i, update of NN i N .
  • the number of CBs included in the last CBG can be obtained by subtracting the number of CBs included in other CBGs from the number of CBs.
  • the resource unit is taken as an example of the number of time domain symbols.
  • the resource unit may also be: a resource element (RE), a resource block (RB), and a resource block group (resource block group, RBG) and so on.
  • the RB occupies 12 consecutive subcarriers in the frequency domain and occupies one slot in the time domain.
  • the RE occupies one subcarrier in the frequency domain and occupies a time domain symbol in the time domain.
  • the RBG includes a plurality of RBs.
  • Step S204 The first device maps data of each CBG to the first time-frequency resource according to the number of time domain symbols used to carry data of each CBG and the number of CBs included in each CBG.
  • Step S205 The first device sends the TB mapped to the first time-frequency resource to the second device.
  • the difference between this embodiment and the first embodiment is: in the first embodiment, in the resource mapping, first determine the number of CBs included in each CBG, and then determine the data used to carry each CBG according to the number of CBs included in each CBG. The number of time domain symbols. In the embodiment, in the resource mapping, first determine the number of time domain symbols used to carry data of each CBG, and then determine the CBs included in each CBG according to the number of time domain symbols used to carry data of each CBG. number. The method of this embodiment can also ensure that each CBG is mapped onto one or more complete time domain symbols.
  • step S201 in the second embodiment the segmentation method of the TB disclosed in step S101 of the embodiment may be used.
  • the method may also be decoupled.
  • the segmentation method of the TB in step S201 may use the existing method, and the resource mapping method uses the resource mapping method disclosed in steps S202-S103; or the segmentation method of the TB in step S201 uses the step disclosed in step S101.
  • the TB segmentation method, the resource mapping method uses other methods, such as using the existing resource mapping method.
  • CBGs may occupy the CBG when mapping.
  • the resource outside the time domain symbol of the data but due to the limitation of the TB segment in the present application, the CBG occupies very few resources outside the time domain symbol of the data carrying the CBG, and the CBG can be considered to occupy the complete time domain. Symbols are acceptable.
  • FIG. 7 is a flowchart of a data processing method according to Embodiment 3. As shown in FIG. 7, the method provided in this embodiment includes the following steps:
  • Step S301 The first device determines, according to the size of the TB, the CB number C obtained by performing CB segmentation on the TB.
  • the sending device may adopt the segmentation method of the TB disclosed in step S101 of the foregoing embodiment, or may adopt the existing method of TB segmentation.
  • Step S302 The first device determines, according to the number of CBs and the number of time domain symbols in the first time-frequency resource, the number of time domain symbols used to carry data of each CB, where the first time-frequency resource is used for Time-frequency resource carrying data of TB.
  • the number of time domain symbols carrying data of each CB is similar or the number of CBs carried on each time domain symbol is similar, which means that the time-frequency resources of data carrying each CB are similar in size.
  • the size of each CB in the TB is proportional to the size of the time-frequency resource carrying the CB, the size of each CB in the TB is similar.
  • the size of each CB in the TB is similar, and the coding gains of the corresponding CBs are similar, so that the data transmission efficiency can be improved.
  • Step S303 The first device determines the size of each CB according to the number of time domain symbols and the number of CBs for carrying data of each CB.
  • the principle is determined that the size of the CB is proportional to the resources occupied by the CB, and the sum of the sizes of the multiple CBs is the length of the TBS plus the new Cyclic Redundancy Check (CRC), and the resources occupied by the CB are ready to use.
  • the CB size is proportional to the time-frequency resource occupied by the CB, so that the code rate of each CB in the actual transmission is similar, so that each CB decoding success rate is similar, thereby improving data transmission efficiency.
  • the CB size is not proportional to the time-frequency resource occupied by the CB, for example, if the time-frequency resource occupied by a certain CB is relatively small, the code rate of the CB will increase, and the CB code rate will decrease the decoding accuracy rate. If the CB decoding fails, it may cause retransmission of TB, CBG or part of CB, which reduces transmission efficiency.
  • the first device calculates the size of each CB according to formula one:
  • s i represents the size of the i-th CB
  • C represents the number of CBs
  • floor represents the largest integer that is not greater than the input value
  • r i represents the number of time-domain symbols used to carry the data of the i-th CB
  • N represents The number of time domain symbols in the first time-frequency resource
  • B' represents the size of the TB plus the CRC of the C CBs.
  • the first device calculates the size of each CB according to formula 2:
  • s i represents the size of the i-th CB
  • C represents the number of CBs
  • floor represents the largest integer that is not greater than the input value
  • the number of time-domain symbols used to carry the data of the i-th CB where N represents the first time The number of time domain symbols in the frequency resource, and B' indicates the size of the TB plus the CRC of the C CBs.
  • Step S304 The first device maps data of each CB to the first time-frequency resource according to the number of time domain symbols used to carry data of each CB and the size of each CB.
  • Step S305 The first device sends the TB mapped to the first time-frequency resource to the second device.
  • the first device may use the existing resource mapping scheme to map the encoded CB to the first time-frequency resource, and map the frequency domain to the time domain in the order of the time domain. .
  • the first device may also determine the number of CBs included in each CBG according to the method disclosed in step S102 in the foregoing first embodiment. Since the number of time domain symbols occupied by data of each CB has been determined, each CBG is determined to be included. After the number of CBs, the number of time domain symbols occupied by each CBG data is uniquely determined, and then each CBG data is mapped to the first time according to the number of time domain symbols occupied by each CBG data. On the frequency resource.
  • the method of the present embodiment can also ensure that each CBG is mapped onto one or more complete time domain symbols. Since each CBG data is mapped to one or more complete time domain symbols, there is no data of two CBGs on one time domain symbol, so when the URLLC service data preempts the time-frequency resources of the eMBB service data. At the same time, the resource that preempts a certain time domain symbol only affects the transmission of a certain CBG, and does not affect the transmission of the two CBGs at the same time, thereby effectively improving the transmission efficiency of the eMBB service data.
  • the network device may notify the terminal device by signaling whether the data of the CBG is mapped to the complete time domain symbol (also referred to as resource alignment).
  • the network device may send indication information to the terminal device by using radio resource control (RRC) signaling or physical layer signaling, where the indication information is used to indicate whether the data of the CBG is mapped to the complete time domain symbol.
  • RRC radio resource control
  • a possible configuration strategy is: for the frequency band in which the URLLC and the eMBB service data coexist, since the URLLC service data may preempt the time-frequency resources of the eMBB service data, it may be configured to map the CBG data to the complete time domain symbol. For the frequency band in which the time-frequency resource of the eMBB service data is not preempted by the URLLC service data, the data of the CBG may not be mapped to the complete time domain symbol.
  • FIG. 8 is a flowchart of a data processing method according to the fourth embodiment.
  • the method in this embodiment is a data processing method at the receiving end corresponding to the data processing method of the sending end provided in the first embodiment. As shown in FIG. 8 , the embodiment provides The method includes the following steps:
  • Step S401 The second device receives the TB sent by the first device.
  • the second device is a receiving end device
  • the first device is a sending end device
  • Step S402 The second device determines, according to the size of the TB, the CB number C obtained by performing CB segmentation on the TB.
  • the number C of CBs is a minimum integer that satisfies the following two conditions, where
  • the number C of CBs is a minimum integer satisfying the following three conditions, wherein
  • Step S403 The second device determines the number of CBs included in each CBG according to the number of CBGs and the number of CBs included in the TB acquired in advance.
  • the second device determines, according to the number of CBGs and the number of CBs included in the TB that are acquired in advance, the number of CBs included in each CBG, specifically:
  • C represents the number of CBs
  • m represents the number of CBGs included in the TB
  • floor represents the largest integer that is not greater than the input value
  • the first ⁇ or the last ⁇ CBG in the m CBGs includes C ⁇ +1 CBs, and the remaining CBGs include C ⁇ CBs.
  • Step S404 The second device determines, according to the number of CBs included in each CBG and the number of time domain symbols in the first time-frequency resource, the number of time domain symbols used to carry data of each CBG in the first time-frequency resource.
  • the first time-frequency resource is a time-frequency resource used to carry data of the TB.
  • the second device calculates, according to the following formula, the number of time domain symbols used to carry data of each CBG in the first time-frequency resource:
  • N i represents the number of time domain symbols used to carry the data of the i-th CBG in the first time-frequency resource
  • C i represents the number of CBs included in the i-th CBG
  • m represents the number of CBGs included in the TB.
  • N is the number of time domain symbols in the first time-frequency resource
  • floor represents the largest integer that is not greater than the input value.
  • Step S405 The second device decodes data of each CBG from the first time-frequency resource according to the number of time domain symbols used to carry data of each CBG.
  • the second device only needs to feed back the NACK message of the CBG to the first device, and the first device retransmits the CBG according to the feedback of the second device, without retransmitting the entire TB. , thereby improving transmission efficiency.
  • the method in this embodiment is the data processing method of the receiving end corresponding to the data processing method of the sending end provided by the first embodiment.
  • the transmitting end and the receiving end use the same method to perform TB segmentation and resource mapping. Add a statement.
  • the receiving end also processes the received TB by using the same data processing method, and the description is not repeated here.
  • FIG. 9 is a schematic structural diagram of a data processing apparatus according to Embodiment 5, as shown in FIG. 9, the data processing apparatus of this embodiment includes:
  • the segmentation module 11 is configured to determine, according to the size of the transport block TB, the CB number C obtained by coding the block TB segment of the TB;
  • a first determining module 12 configured to determine, according to the pre-obtained number of coded block groups CBG included in the TB and the number of CBs, the number of CBs included in each CBG;
  • the second determining module 13 is configured to determine, according to the number of CBs included in each CBG and the number of time domain symbols in the first time-frequency resource, to carry the CBG in the first time-frequency resource.
  • the number of time domain symbols of the data, wherein the first time-frequency resource is a time-frequency resource for carrying data of the TB;
  • the mapping module 14 is configured to map the data of each CBG to the first time-frequency resource according to the number of time domain symbols used to carry the data of each CBG.
  • the second determining module 13 is specifically configured to:
  • N i represents the number of time domain symbols used to carry the data of the i-th CBG in the first time-frequency resource
  • C i represents the number of CBs included in the i-th CBG
  • m represents the number of CBs included in the TB.
  • the number of CBGs, where N is the number of time domain symbols in the first time-frequency resource, and floor represents the largest integer that is not greater than the input value.
  • the CB number C is a minimum integer that satisfies the following two conditions, where
  • the CB number C is a minimum integer that satisfies the following three conditions, where
  • the first determining module is specifically configured to:
  • C represents the number of CBs
  • m represents the number of CBGs included in the TB
  • floor represents the largest integer that is not greater than the input value
  • the first ⁇ or the last ⁇ CBGs in the m CBGs include C ⁇ +1 CBs, and the remaining CBGs include C ⁇ CBs.
  • the device in this embodiment may be used to perform the method in the foregoing Embodiment 1.
  • the specific implementation and technical effects are similar, and are not described herein.
  • FIG. 10 is a schematic structural diagram of a data processing apparatus according to Embodiment 6. As shown in FIG. 10, the data processing apparatus of this embodiment includes:
  • the receiving module 21 is configured to receive the transport block TB sent by the first device
  • the segmentation module 22 is configured to determine, according to the size of the TB, a CB number C obtained by performing coding block CB segmentation on the TB;
  • a first determining module 23 configured to determine, according to the pre-obtained number of coded block groups CBG included in the TB and the number of CBs, the number of CBs included in each CBG;
  • a second determining module 24 configured to determine, according to the number of CBs included in each CBG and the number of time domain symbols in the first time-frequency resource, to carry the CBG in the first time-frequency resource The number of time domain symbols of the data, wherein the first time-frequency resource is a time-frequency resource for carrying data of the TB;
  • the decoding module 25 is configured to decode the data of each CBG from the first time-frequency resource according to the number of time domain symbols used to carry the data of each CBG.
  • the second determining module 24 is specifically configured to:
  • N i represents the number of time domain symbols used to carry the data of the i-th CBG in the first time-frequency resource
  • C i represents the number of CBs included in the i-th CBG
  • m represents the number of CBs included in the TB.
  • the number of CBGs, where N is the number of time domain symbols in the first time-frequency resource, and floor represents the largest integer that is not greater than the input value.
  • the CB number C is a minimum integer that satisfies the following two conditions, where
  • the CB number C is a minimum integer that satisfies the following three conditions, where
  • the first determining module 23 is specifically configured to:
  • C represents the number of CBs
  • m represents the number of CBGs included in the TB
  • floor represents the largest integer that is not greater than the input value
  • the first ⁇ or the last ⁇ CBGs in the m CBGs include C ⁇ +1 CBs, and the remaining CBGs include C ⁇ CBs.
  • the device in this embodiment may be used to perform the method in the foregoing Embodiment 4.
  • the specific implementation is similar to the technical effect, and details are not described herein.
  • the apparatus for performing the method corresponding to the method of the foregoing embodiment 2 and the third embodiment may be directly obtained by referring to the apparatus of the embodiment, and details are not described herein.
  • the data processing apparatus of this embodiment includes: a processor 31, a memory 32, and a communication interface 33, where the memory 32 is used to store instructions.
  • the communication interface 33 is configured to communicate with other devices, and the processor 31 is configured to execute the instructions stored in the memory 32, so that the data processing device performs the methods in the foregoing Embodiments 1 to 3, and the specific implementation is implemented.
  • the technical effects of the method are similar, and will not be described here.
  • the data processing apparatus of this embodiment includes: a processor 41, a memory 42 and a communication interface 43 for storing instructions.
  • the communication interface 43 is configured to communicate with other devices, and the processor 41 is configured to execute the instructions stored in the memory 42 to enable the data processing device to perform the method in the fourth embodiment. Similar, no more details here.
  • the data processing apparatus may also perform the data processing method adopted by the receiving end corresponding to the data processing method of the transmitting end provided by the second embodiment and the third embodiment, wherein the transmitting end and the receiving end adopt the same data processing method, which is not repeated here. description.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a Solid State Disk (SSD)) or the like.
  • a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
  • an optical medium eg, a DVD
  • a semiconductor medium such as a Solid State Disk (SSD)
  • the described device embodiments are only schematic.
  • the division of the unit is only a logical function division, and the actual implementation may have another division manner.
  • multiple units or components may be combined or integrated into another system, or some features may be omitted or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separate, ie may be located in one place, or may be distributed over multiple network elements. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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Abstract

本申请提供一种数据处理方法和装置,第一设备根据TB的大小确定对TB进行CB分段后得到的CB个数C,根据预先获取的TB包括的CBG个数和CB个数,确定每个CBG包括的CB个数,然后根据每个CBG包括的CB个数和第一时频资源中的时域符号个数,确定所述第一时频资源中用于承载每个CBG的数据的时域符号个数,最后根据用于承载每个CBG的数据的时域符号个数,将每个CBG的数据映射到第一时频资源上。从而能够保证将每个CBG映射到一个或多个完整的时域符号上。由于每个CBG的数据都是映射到一个或多个完整的时域符号上,不会出现一个时域符号上有两个CBG的数据,因此当URLLC业务数据抢占eMBB业务数据的时频资源的时候,抢占某一个时域符号的资源只会影响到某一个CBG的传输,而不会同时影响两个CBG的传输,从而能够有效地提升eMBB业务数据的传输效率。

Description

数据处理方法和装置
本申请要求于2017年5月5日提交中国专利局、申请号为201710313982.3、申请名称为“数据处理方法和装置”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
本申请涉及通信技术,尤其涉及一种数据处理方法和装置。
背景技术
第五代移动通信(5th-Generation,5G)系统支持更多的业务,例如5G系统支持增强型移动宽带(enhanced mobile broadband,eMBB)业务、高可靠低时延通信(ultra reliable and low latency communications,URLLC)业务以及海量机器类通信(massive machine type communications,mMTC)业务。不同业务对通信系统的需求不同,如何更好地同时支持多种不同业务的数据传输需求,是5G系统当前所需要解决的技术问题。例如,如何同时支持URLLC业务和eMBB业务就是当前5G移动通信系统的讨论热点之一。
URLLC业务的数据包的产生具有突发性和随机性,可能在很长一段时间内都不会产生数据包,也可能在很短时间内产生多个数据包。如果基站采用预留资源的方式为URLLC业务分配资源,则在无URLLC业务的时候系统资源是浪费的。eMBB业务的数据量比较大,而且传输速率比较高,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。为了提高通信系统资源利用率,基站通常不会为URLLC业务的下行数据传输预留资源。当URLLC业务数据到达基站时,如果此时没有空闲的时频资源,基站为了满足URLLC业务的超短时延需求,无法等待将本次调度的eMBB业务数据传输完成之后再对URLLC业务数据进行调度。基站可以采用抢占(preemption)的方式,为URLLC业务数据分配资源。这里的抢占是指基站在已经分配的、用于传输eMBB业务数据的时频资源上选择部分或全部的时频资源用于传输URLLC业务数据,基站在用于传输URLLC业务数据的时频资源上不发送eMBB业务的数据。
在eMBB业务和URLLC业务共存的场景中,基站需要将抢占的时频资源(也称为打孔位置的时频资源)通知给终端设备。现有技术中,基站在传输下行数据时,当传输块(transport block,TB)较大时,基站将TB分成多个编码块(code block,CB),并将多个CB划分为多个编码块组(code block group,CBG),然后将每个CBG经过编码和调制后映射到时频资源上,但是,现有方法中每个CBG无法保证映射在完整的时域符号中。例如,可能出现某个时域符号上同时承载有两个CBG的数据当这个时域符号的资源被其业务数据抢占的时候,就会同时影响两个CBG的数据的正确接收,从而可能导致两个CBG的数据的重传,降低了数据传输效率。
发明内容
本申请提供一种数据处理方法和装置,从而能够有效地提升eMBB业务数据的传输效率。
本申请第一方面提供一种数据处理方法,包括:
第一设备根据传输块TB的大小确定对所述TB进行编码块CB分段后得到的CB个数C;
所述第一设备根据预先获取的所述TB包括的编码块组CBG个数和所述CB个数,确定每个CBG包括的CB个数;
所述第一设备根据所述每个CBG包括的CB个数和第一时频资源中的时域符号个数,确定所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数,其中,所述第一时频资源为用于承载所述TB的数据的时频资源;
所述第一设备根据用于承载所述每个CBG的数据的时域符号个数,将所述每个CBG的数据映射到所述第一时频资源上。
一种可能的实现方式中,所述第一设备根据所述每个CBG包括的CB个数和第一时频资源中的时域符号个数,确定所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数,包括:
所述第一设备根据如下公式计算所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数:
Figure PCTCN2018083798-appb-000001
其中,N i表示所述第一时频资源中用于承载第i个CBG的数据的时域符号个数,C i表示第i个CBG包括的CB个数,m表示所述TB中包括的CBG的个数,N为所述第一时频资源中的时域符号个数,floor表示取不大于输入值的最大整数。
一种可能的实现方式中,所述第一设备根据预先获取的所述TB包括的编码块组CBG个数和所述CB个数,确定每个CBG包括的CB个数,包括:
根据下述公式计算第一参数C -
Figure PCTCN2018083798-appb-000002
其中,C表示所述CB个数,m表示所述TB中包括的CBG个数,floor表示取不大于输入值的最大整数;
根据所述第一参数C -计算第二参数Δ,Δ=C-mC -
确定所述m个CBG中前Δ个或后Δ个CBG包括C -+1个CB,剩下的CBG包括C -个CB。
本申请第二方面提供一种数据处理方法,包括:
第二设备接收第一设备发送的传输块TB;
所述第二设备根据所述TB的大小确定对所述TB进行编码块CB分段后得到的 CB个数C;
所述第二设备根据预先获取的所述TB包括的编码块组CBG个数和所述CB个数,确定每个CBG包括的CB个数;
所述第二设备根据所述每个CBG包括的CB个数和第一时频资源中的时域符号个数,确定所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数,其中,所述第一时频资源为用于承载所述TB的数据的时频资源;
所述第二设备根据用于承载所述每个CBG的数据的时域符号个数,将所述每个CBG的数据从所述第一时频资源中解码出来。
一种可能的实现方式中,所述第二设备根据所述每个CBG包括的CB个数和第一时频资源中的时域符号个数,确定所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数,包括:
所述第二设备根据如下公式计算所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数:
Figure PCTCN2018083798-appb-000003
其中,N i表示所述第一时频资源中用于承载第i个CBG的数据的时域符号个数,C i表示第i个CBG包括的CB个数,m表示所述TB中包括的CBG的个数,N为所述第一时频资源中的时域符号个数,floor表示取不大于输入值的最大整数。
一种可能的实现方式中,所述第二设备根据预先获取的所述TB包括的CBG个数和所述CB个数,确定每个CBG包括的CB个数,包括:
根据下述公式计算第一参数C -
Figure PCTCN2018083798-appb-000004
其中,C表示所述CB个数,m表示所述TB中包括的CBG个数,floor表示取不大于输入值的最大整数;
根据所述第一参数C -计算第二参数Δ,Δ=C-mC -
确定所述m个CBG中前Δ个或后Δ个CBG包括C -+1个CB,剩下的CBG包括C -个CB。
本申请第三方面提供一种数据处理装置,包括:
分段模块,用于根据传输块TB的大小确定对所述TB进行编码块CB分段后得到的CB个数C;
第一确定模块,用于根据预先获取的所述TB包括的编码块组CBG个数和所述CB个数,确定每个CBG包括的CB个数;
第二确定模块,用于根据所述每个CBG包括的CB个数和第一时频资源中的时域符号个数,确定所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数,其中,所述第一时频资源为用于承载所述TB的数据的时频资源;
映射模块,用于根据用于承载所述每个CBG的数据的时域符号个数,将所述每个 CBG的数据映射到所述第一时频资源上。
一种可能的实现方式中,所述第二确定模块具体用于:
根据如下公式计算所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数:
Figure PCTCN2018083798-appb-000005
其中,N i表示所述第一时频资源中用于承载第i个CBG的数据的时域符号个数,C i表示第i个CBG包括的CB个数,m表示所述TB中包括的CBG的个数,N为所述第一时频资源中的时域符号个数,floor表示取不大于输入值的最大整数。
一种可能的实现方式中,所述第一确定模块具体用于:
根据下述公式计算第一参数C -
Figure PCTCN2018083798-appb-000006
其中,C表示所述CB个数,m表示所述TB中包括的CBG个数,floor表示取不大于输入值的最大整数;
根据所述第一参数C -计算第二参数Δ,Δ=C-mC -
确定所述m个CBG中前Δ个或后Δ个CBG包括C -+1个CB,剩下的CBG包括C -个CB。
本申请第四方面提供一种数据处理装置,包括:
接收模块,用于接收第一设备发送的传输块TB;
分段模块,用于根据所述TB的大小确定对所述TB进行编码块CB分段后得到的CB个数C;
第一确定模块,用于根据预先获取的所述TB包括的编码块组CBG个数和所述CB个数,确定每个CBG包括的CB个数;
第二确定模块,用于根据所述每个CBG包括的CB个数和第一时频资源中的时域符号个数,确定所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数,其中,所述第一时频资源为用于承载所述TB的数据的时频资源;
解码模块,用于根据用于承载所述每个CBG的数据的时域符号个数,将所述每个CBG的数据从所述第一时频资源中解码出来。
一种可能的实现方式中,所述第二确定模块具体用于:
根据如下公式计算所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数:
Figure PCTCN2018083798-appb-000007
其中,N i表示所述第一时频资源中用于承载第i个CBG的数据的时域符号个数,C i表示第i个CBG包括的CB个数,m表示所述TB中包括的CBG的个数,N为所述 第一时频资源中的时域符号个数,floor表示取不大于输入值的最大整数。
一种可能的实现方式中,所述第一确定模块具体用于:
根据下述公式计算第一参数C -
Figure PCTCN2018083798-appb-000008
其中,C表示所述CB个数,m表示所述TB中包括的CBG个数,floor表示取不大于输入值的最大整数;
根据所述第一参数C -计算第二参数Δ,Δ=C-mC -
确定所述m个CBG中前Δ个或后Δ个CBG包括C -+1个CB,剩下的CBG包括C -个CB。
本申请第五方面提供一种数据处理装置,包括处理器、存储器和通信接口,所述存储器用于存储指令,所述通信接口用于和其他设备通信,所述处理器用于执行所述存储器中存储的指令,以执行如下所述方法,具体的:
所述处理器用于:
根据传输块TB的大小确定对所述TB进行编码块CB分段后得到的CB个数C;
根据预先获取的所述TB包括的编码块组CBG个数和所述CB个数,确定每个CBG包括的CB个数;
根据所述每个CBG包括的CB个数和第一时频资源中的时域符号个数,确定所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数,其中,所述第一时频资源为用于承载所述TB的数据的时频资源;
根据用于承载所述每个CBG的数据的时域符号个数,将所述每个CBG的数据映射到所述第一时频资源上。
一种可能的实现方式中,所述处理器具体用于:
根据如下公式计算所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数:
Figure PCTCN2018083798-appb-000009
其中,N i表示所述第一时频资源中用于承载第i个CBG的数据的时域符号个数,C i表示第i个CBG包括的CB个数,m表示所述TB中包括的CBG的个数,N为所述第一时频资源中的时域符号个数,floor表示取不大于输入值的最大整数。
一种可能的实现方式中,所述处理器具体用于:根据下述公式计算第一参数C -
Figure PCTCN2018083798-appb-000010
其中,C表示所述CB个数,m表示所述TB中包括的CBG个数,floor表示取不大于输入值的最大整数;
根据所述第一参数C -计算第二参数Δ,Δ=C-mC -
确定所述m个CBG中前Δ个或后Δ个CBG包括C -+1个CB,剩下的CBG包括C - 个CB。
本申请第六方面提供一种数据处理装置,包括处理器、存储器和通信接口,所述存储器用于存储指令,所述通信接口用于和其他设备通信,所述处理器用于执行所述存储器中存储的指令,以执行如下所述方法,具体的:
所述通信接口,用于接收第一设备发送的传输块TB;
所述处理器用于:
根据所述TB的大小确定对所述TB进行编码块CB分段后得到的CB个数C;
根据预先获取的所述TB包括的编码块组CBG个数和所述CB个数,确定每个CBG包括的CB个数;
根据所述每个CBG包括的CB个数和第一时频资源中的时域符号个数,确定所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数,其中,所述第一时频资源为用于承载所述TB的数据的时频资源;
根据用于承载所述每个CBG的数据的时域符号个数,将所述每个CBG的数据从所述第一时频资源中解码出来。
一种可能的实现方式中,所述处理器具体用于:
根据如下公式计算所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数:
Figure PCTCN2018083798-appb-000011
其中,N i表示所述第一时频资源中用于承载第i个CBG的数据的时域符号个数,C i表示第i个CBG包括的CB个数,m表示所述TB中包括的CBG的个数,N为所述第一时频资源中的时域符号个数,floor表示取不大于输入值的最大整数。
一种可能的实现方式中,所述处理器具体用于:
根据预先获取的所述TB包括的CBG个数和所述CB个数,确定每个CBG包括的CB个数,包括:
根据下述公式计算第一参数C -
Figure PCTCN2018083798-appb-000012
其中,C表示所述CB个数,m表示所述TB中包括的CBG个数,floor表示取不大于输入值的最大整数;
根据所述第一参数C -计算第二参数Δ,Δ=C-mC -
确定所述m个CBG中前Δ个或后Δ个CBG包括C -+1个CB,剩下的CBG包括C -个CB。
在上述第一方面至第六方面中,一种可能的实现方式中,所述CB个数C为满足以下两个条件的最小整数,其中,
条件一:C mod N=0或N mod C=0,其中,N为所述第一时频资源中的时域符号个数,mod表示取余运算;
条件二:
Figure PCTCN2018083798-appb-000013
其中,Z为CB的大小的最大值,TBS为所述TB的大小。
在上述第一方面至第六方面中,一种可能的实现方式中,所述CB个数C为满足以下三个条件的最小整数,其中,
条件一:C mod N=0或N mod C=0,其中,N为所述第一时频资源中的时域符号个数,mod表示取余运算;
条件二:
Figure PCTCN2018083798-appb-000014
其中,Z为CB的大小的最大值,TBS为所述TB的大小;
条件三:C mod m=0,其中,m为所述TB中包括的CBG的个数。
本申请第七方面提供一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行上述第一方面和第一方面的各种可能的设计中的方法。
本申请第八方面提供一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行上述第二方面和第二方面的各种可能的设计中的方法。
本申请第九方面提供一种计算机可读存储介质,所述计算机可读存储介质中存储有指令,当其在计算机上运行时,使得计算机执行上述第一方面和第一方面的各种可能的设计中的方法。
本申请第十方面提供一种计算机可读存储介质,所述计算机可读存储介质中存储有指令,当其在计算机上运行时,使得计算机执行上述第二方面和第二方面的各种可能的设计中的方法。
本申请提供的数据处理方法和装置,第一设备根据TB的大小确定对TB进行CB分段后得到的CB个数C,根据预先获取的TB包括的CBG个数和CB个数,确定每个CBG包括的CB个数,然后根据每个CBG包括的CB个数和第一时频资源中的时域符号个数,确定所述第一时频资源中用于承载每个CBG的数据的时域符号个数,最后根据用于承载每个CBG的数据的时域符号个数,将每个CBG的数据映射到第一时频资源上。从而能够保证将每个CBG映射到一个或多个完整的时域符号上。由于每个CBG的数据都是映射到一个或多个完整的时域符号上,不会出现一个时域符号上有两个CBG的数据,因此当URLLC业务数据抢占eMBB业务数据的时频资源的时候,抢占某一个时域符号的资源只会影响到某一个CBG的传输,而不会同时影响两个CBG的传输,从而能够有效地提升eMBB业务数据的传输效率。
附图说明
图1为本申请适用的通信系统的架构示意图;
图2为URLLC业务数据抢占用于传输eMBB业务数据的时频资源的示意图;
图3为现有的一种资源映射的示意图;
图4是CBG映射的示意图;
图5为实施例一提供的数据处理方法的流程图;
图6为实施例二提供的数据处理方法的流程图;
图7为实施例三提供的数据处理方法的流程图;
图8为实施例四提供的数据处理方法的流程图;
图9为实施例五提供的数据处理装置的结构示意图;
图10为实施例六提供的数据处理装置的结构示意图;
图11为实施例七提供的数据处理装置的结构示意图;
图12为实施例八提供的数据处理装置的结构示意图。
具体实施方式
本申请提供一种数据处理方法,本申请提供的方法可以应用在现有的通信系统中,图1为本申请适用的通信系统的架构示意图,如图1所示,该通信系统包括接入网设备和终端设备,终端设备的个数可以为一个或多个。该通信系统可以为长期演进(long term evolution,LTE)系统、5G系统或无线保真(wireless-fidelity,WIFI)系统。相应的,该接入网设备可以为LTE系统中的演进型基站(evolved NodeB,eNB)或者中继站,还可以是5G系统中的基站、WiFi系统中的接入点(access point,AP)等,在此不作限定。
终端设备也可以称为终端(Terminal)、用户设备(user equipment,UE)、移动台(mobile station,MS)、移动终端(mobile termina,MT)等。终端设备可以是手机(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,在此不做限制。
接入网设备和终端设备之间以及终端设备和终端设备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。接入网设备和终端设备之间以及终端设备和终端设备之间可以通过6G以下的频谱进行通信,也可以通过6G以上的频谱进行通信,还可以同时使用6G以下的频谱和6G以上的频谱进行通信。本申请的实施例对接入网设备和终端设备之间所使用的频谱资源不做限定。
在5G系统中,典型的eMBB业务有:超高清视频、AR、VR等,这些业务的主要特点是传输数据量大、传输速率很高。典型的URLLC业务有:工业制造或生产流程中的无线控制、无人驾驶汽车和无人驾驶飞机的运动控制以及远程修理、远程手术等触觉交互类应用,这些业务的主要特点是超高可靠性、低延时,传输数据量较少以及具有突发性。典型的mMTC业务有:智能电网配电自动化、智慧城市等,主要特点是联网设备数量巨大、传输数据量较小、数据对传输时延不敏感,这些mMTC终端需要满足低成本和非常长的待机时间的需求。
不同业务对通信系统的需求不同,如何更好地同时支持多种不同业务的数据传输需求,是5G系统当前所需要解决的技术问题。例如,如何同时支持URLLC业务和eMBB业务就是当前5G移动通信系统的讨论热点之一。
URLLC业务的数据包的产生具有突发性和随机性,可能在很长一段时间内都不会产生数据包,也可能在很短时间内产生多个数据包。URLLC业务的数据包在多数情况 下为小包,例如50个字节。URLLC业务的数据包的特性会影响通信系统的资源分配方式。这里的资源包括但不限于:时域符号、频域资源、时频资源、码字资源以及波束资源等。通常系统资源的分配由基站来完成,下面以基站为例进行说明。如果基站采用预留资源的方式为URLLC业务分配资源,则在无URLLC业务的时候系统资源是浪费的。而且URLLC业务的短时延特性要求数据包在极短的时间内传输完成,所以基站需要预留足够大的带宽给URLLC业务,从而导致系统资源利用率严重下降。
eMBB业务的数据量比较大,而且传输速率比较高,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7个时域符号,对应的时间长度为0.5ms。URLLC业务数据通常采用较短的时间调度单元,以满足超短时延的需求,例如,采用15kHz子载波间隔的2个时域符号,或者采用60kHz子载波间隔的一个时隙,对应7个时域符号,对应的时间长度为0.125ms。
由于URLLC业务的数据的突发性,为了提高通信系统资源利用率,基站通常不会为URLLC业务的下行数据传输预留资源。当URLLC业务数据到达基站时,如果此时没有空闲的时频资源,基站为了满足URLLC业务的超短时延需求,无法等待将本次调度的eMBB业务数据传输完成之后再对URLLC业务数据进行调度。基站可以采用抢占(preemption)的方式,为URLLC业务数据分配资源。这里的抢占是指基站在已经分配的、用于传输eMBB业务数据的时频资源上选择部分或全部的时频资源用于传输URLLC业务数据,基站在用于传输URLLC业务数据的时频资源上不发送eMBB业务的数据。图2为URLLC业务数据抢占用于传输eMBB业务数据的时频资源的示意图,如图2所示,横轴表示时间,纵轴表示频率,图2斜线阴影区域为已分配的用于传输eMBB业务数据的时频资源,竖线阴影区域为URLLC业务数据抢占的时频资源,即URLLC业务数据抢占了一个时隙内的第三个和第四个时域符号的资源。从图2看,URLLC业务数据抢占的时频资源相当于在eMBB业务数据的时频资源上打了一个孔,因此,URLLC业务数据抢占的时频资源也称为打孔位置的时频资源。
在eMBB业务和URLLC业务共存的场景中,基站需要将打孔位置的时频资源通知给终端设备。如果采用现有的资源映射方法,打孔位置的时频资源的指示非常复杂。LTE系统中,基站将TB作为最小的数据传输单位,当TB较大时,基站将TB分成多个CB,并为每个CB添加CRC,然后为每个CB编码、速率匹配和资源映射等操作后发送出去。图3为现有的一种资源映射的示意图,如图3所示,横轴表示时域,纵轴表示频域。时域上示出了本次传输过程中所分配的时域资源,具体是1个时隙(slot),该slot包括7个符号,即符号0~6;频域上示出了本次传输过程中所分配的频域资源。图3以本次传输过程中传输的TB包括6个CB,即CB1~CB6,为例进行说明的。如图3所示,各CB映射到时频资源后占用的不是完整的符号。本申请中的符号,如无特殊说明,均指时域符号,例如是正交频分复用(orthogonal frequency division multiplexing,OFDM)符号。
在eMBB业务和URLLC业务共存的场景中,如果让一个CB刚好映射在一个符号上,那么基于符号发送的URLLC可以只抢占一个或多个CB,打孔位置的时频资源指示会很简单。已有技术中,也可以将所有CB划分为若干个CBG,如果每个CBG经过编码和调制后,能够映射到若干个完整的符号对应的时频资源上(简称为CBG in  box),则会给调度带来很多便利。比如在eMBB业务和URLLC业务共存的场景中,如果让一个CBG刚好映射在一个微时隙(mini-slot)中,那么基于mini-slot发送的URLLC可以只抢占一个CBG,打孔位置的时频资源指示会很简单,其中,一个mini-slot包括一个或多个时域符号。该方法中只需要将一个CBG映射到完整的一个或多个符号中,CBG中的每个CB可能占用完整的符号,也可能占用不完整的符号。图4是CBG映射的示意图,如图4所示,TB被分为了三个CBG:CBG1、CBG2和CBG3,TB共占用7个符号:符号0~符号6,三个CBG都占用完整的符号,CBG1占用两个符号:符号0和符号1,CBG2占用两个符号:符号2和符号3,CBG3占用三个符号:符号4、符号5和符号6。其中,CBG1包括两个CB:CB1和CB2,CBG2包括两个CB:CB3和CB4,CBG3包括两个CB:CB5和CB6,CB1占用符号0,CB2占用符号1,CB3占用符号2,CB4占用符号3,CB5占用符号4和符号5的部分,CB6占用符号5的部分资源和符号6。
本申请中提到的完整符号,是指给某个UE或某个通信链路或某个数据传输分配的资源内的完整符号,而不是系统带宽上的完整符号。例如,系统带宽20MHz,给UE分配了10MHz。那么完整与否只在分配的这10MHz资源上讨论。上述的效果也可以称之为符号对齐。如果将上述的符号全部替换为mini-slot,也可以称之为mini-slot对齐,或者总称资源对齐。有时候TB包括的CBG个数会大于资源个数,例如CBG个数大于符号个数或者mini-slot个数,这时资源对齐表示,在一个符号上或者一个mini-slot中,只包含完整的CBG。
需要说明的是,本申请的方案可以适用于下行信号传输,也可以适用于上行信号传输,还可以适用于设备到设备(device to device,D2D)的信号传输。对于下行信号传输,发送设备是接入网设备,对应的接收设备是终端设备。对于上行信号传输,发送设备是终端设备,对应的接收设备是接入网设备。对于D2D的信号传输,发送设备是终端设备,对应的接收设备也是终端设备。本申请的实施例信号的传输方向不做限定。
为了解决上述问题,实施例一提供一种数据发送方法,图5为实施例一提供的数据处理方法的流程图,如图5所示,本实施例提供的方法包括以下步骤:
步骤S101、第一设备根据TB的大小确定对TB进行CB分段后得到的CB个数C。
在一次数据发送过程中,TB的大小(TB size,TBS)已知,给该TB分配的时域资源也是已知的,本实施例中将为TB分配的时频资源称为第一时频资源,假设该第一时域资源在时域上包括N个时域符号,N为正整数。该时域符号为时域上的最小资源单位。
本实施例中,TB包括的CB个数C是未知的,为了使得CBG能够映射到完整的时域符号上,C需要满足条件C mod N=0,N为第一时频资源中的时域符号个数,mod表示取余运算,例如C=4,N=2,则可以将4个CB分为两个CBG,每个CBG映射在1个时域符号上。C mod N=0适用于C大于或等于N的情况,在实际应用中C有可能小于N,因此,当C小于N时,C需要满足条件N mod C=0。
CB的大小的最大值Z可以根据编码方式的不同设置为不同的取值,例如,对于turbo编码,Z可以设置为6144比特,对于低密度奇偶校验码(low density parity check  code,LDPC)编码,Z可以设置为8192比特。因此,C应该满足
Figure PCTCN2018083798-appb-000015
经过变换可以得到
Figure PCTCN2018083798-appb-000016
综上所述,一种实现方式中,CB个数C为满足以下两个条件的最小整数:
条件一:C mod N=0或N mod C=0,其中,N为第一时频资源中的时域符号个数,mod表示取余运算;
条件二:
Figure PCTCN2018083798-appb-000017
其中,Z为CB的大小的最大值,TBS为TB的大小。
例如,TBS=10000,N=3,Z=8192,由于
Figure PCTCN2018083798-appb-000018
且C是整数,所以C≥2。如果C=3,则满足C mod N=0,如果C=2,则C mod N=0和N mod C=0都不满足,因此可以确定C=3。
假设将C个CB分成m个CBG,可选的,C需要满足条件:C mod m=0,因此,在另一种实现方式中,CB个数C为满足以下三个条件的最小整数:
条件一:C mod N=0或N mod C=0,其中,N为第一时频资源中的时域符号个数,mod表示取余运算;
条件二:
Figure PCTCN2018083798-appb-000019
其中,Z为CB的大小的最大值,TBS为TB的大小;
条件三:C mod m=0,其中,m为TB中包括的CBG的个数。
需要说明的是,本实施例以N是第一时频资源中的时域符号个数为例进行说明的,实际上N也可以是第一时频资源中的mini-slot的个数,其中,mini-slot小于LTE系统中一个slot的长度,在LTE系统中一个slot的时间长度为0.5毫秒(millisecond,ms),则一个mini-slot的时间长度小于0.5ms。
另外,本实施例中以一个TB为例说明如何进行TB分段,实际上本实施例的方法也可以适用于多个TB或一个TB的一部分,将多个TB进行分段时,可以是将多个TB级联后进行统一分段,也可以是对多个TB中的每个TB分别进行分段。
步骤S102、第一设备根据预先获取的TB包括的CBG个数和CB个数,确定每个CBG包括的CB个数。
TB包括的CBG个数m可以是预定义的。例如,当第一设备和第二设备之间的数据传输模式是CBG模式时,m为一个固定的大于一的整数值,如m=4;当第一设备和第二设备之间的数据传输模式不是CBG模式时,m=1。
TB包括的CBG个数m也可以是隐式确定的。例如,当第一设备和第二设备之间的数据传输模式是CBG模式时,且当CB个数大于等于某个阈值时,m取值为4;当第一设备和第二设备之间的数据传输模式是CBG模式时,且当CB个数小于该阈值时,m取值为2或1。或者,当第一设备和第二设备之间的数据传输模式是CBG模式时,且当TBS大于等于某个阈值时,m取值为4;当第一设备和第二设备之间的数据传输模式是CBG模式时,且当TBS小于该阈值时,m取值为2或1。
TB包括的CBG个数m也可以是通过信令配置。例如,第一设备可以将确定的m 的取值通过信令发送给第二设备,其中,这里的信令可以是物理层信令也可以是无线资源控制(radio resource control,RRC)信令。
一种实现方式中,第一设备先根据下述公式计算第一参数C -
Figure PCTCN2018083798-appb-000020
其中,C表示CB个数,m表示TB中包括的CBG个数,floor表示取不大于输入值的最大整数,floor也可以采用向下取整运算代替。
然后,根据所述第一参数C -计算第二参数Δ,Δ=C-mC -
最后,确定m个CBG中前Δ个或后Δ个CBG包括C -+1个CB,剩下的CBG包括C -个CB。
通过该方法计算得到的CBG包括的CB个数相差1,使得各CBG包括的CB个数尽量均匀,进而使得每个CBG被正确接收的概率近似相同,从而有效提升数据传输效率。
步骤S103、第一设备根据每个CBG包括的CB个数和第一时频资源中的时域符号个数,确定第一时频资源中用于承载每个CBG的数据的时域符号个数,其中,第一时频资源为用于承载TB的数据的时频资源。
一种实现方式中,第一设备根据如下公式计算第一时频资源中用于承载每个CBG的数据的时域符号个数:
Figure PCTCN2018083798-appb-000021
其中,N i表示第一时频资源中用于承载第i个CBG的数据的时域符号个数,C i表示第i个CBG包括的CB个数,m表示TB中包括的CBG的个数,N为第一时频资源中的时域符号个数,floor表示取不大于输入值的最大整数。用于承载CBG的数据的时域符号个数也可以描述为CBG的数据占用的时域符号个数,本申请中两种描述方式都表示同一个含义,在有些时候为了方便表述可以选择合适的方式。
上述实现方式中,一次把所有用于承载CBG的数据的时域符号个数都算出来,例如,C=5,N=7,m=4,C i={2,1,1,1},那么可以计算出Ni={(2/5,1/5,1/5)*7}={2,1,1},最后一个N4=7-2-1-1=3,则N i={2,1,1,3}。
另一种实现方式中,可以用迭代的方式,使用公式
Figure PCTCN2018083798-appb-000022
计算第一时频资源中用于承载每个CBG的数据的时域符号个数N i,其中,floor表示取不大于输入值的最大整数,每次计算一个用于承载CBG的数据的时域符号个数,每次计算完后更新C为C-C i,更新N为N-N i。最后一个CBG的数据的占用的时域符号个数可以用第一时频资源中的时域符号个数N减去其他CBG的数据的占用的时域符号个数得到,其中,CBG的数据的占用的时域符号个数为用于承载CBG的所述的时域符号个数。
步骤S104、第一设备根据用于承载每个CBG的数据的时域符号个数,将每个CBG 的数据映射到第一时频资源上。
由于已经确定了用于承载每个CBG的数据的时域符号个数,那么根据每个CBG的数据(即该CBG包括的CB的大小之和)和用于承载该CBG的数据的时域符号个数,对该CBG的数据进行编码和速率匹配,编码后的数据按照先频域后时域方式进行映射即可。
步骤S105、第一设备将映射到第一时频资源上的TB发送给第二设备。
其中,步骤S105为可选步骤。
本实施例的方法,第一设备根据TB的大小确定对TB进行CB分段后得到的CB个数C,根据预先获取的TB包括的CBG个数和CB个数,确定每个CBG包括的CB个数,然后根据每个CBG包括的CB个数和第一时频资源中的时域符号个数,确定所述第一时频资源中用于承载每个CBG的数据的时域符号个数,最后根据用于承载每个CBG的数据的时域符号个数,将每个CBG的数据映射到第一时频资源上。从而能够保证将每个CBG映射到一个或多个完整的时域符号上。在eMBB业务和URLLC业务共存的场景中,由于每个CBG的数据都是映射到一个或多个完整的时域符号上,不会出现一个时域符号上有两个CBG的数据,因此当URLLC业务数据抢占eMBB业务数据的时频资源的时候,抢占某一个时域符号的资源只会影响到某一个CBG的传输,而不会同时影响两个CBG的传输,从而能够有效地提升eMBB业务数据的传输效率。
另外,当数据传输错误需要重传的场景下,由于重传的数据是若干个CBG,如果重传的CBG映射到一个或多个完整的时域符号上,那么重传的CBG需要的时频资源就是完整的时域符号,在指示时开销小。
需要说明的是,实施例一中步骤S101揭示的TB的分段方法,与步骤S102-S103揭示的资源映射方法的方法可以解耦,即TB的分段方法可以使用现有的方法,资源映射方法使用步骤S102-S103揭示的资源映射方法;或者,TB的分段方法使用步骤S101揭示的分段方法,资源映射方法使用其他的方法,如使用现有的资源映射方法。
图6为实施例二提供的数据处理方法的流程图,如图6所示,本实施例提供的方法包括以下步骤:
步骤S201、第一设备根据TB的大小确定对TB进行CB分段后得到的CB个数C。
本步骤的具体实现方式参照上述实施例一步骤S101揭示的TB的分段方法,也可以采用现有的TB的分段方法。
步骤S202、第一设备根据预先获取的TB包括的CBG个数和第一时频资源中的时域符号个数,确定用于承载每个CBG的数据的时域符号个数,其中,第一时频资源为用于承载TB的数据的时频资源。
第一种实现方式中,采用预定义的方式,预先定义时域符号个数、CBG个数和用于承载每个CBG的数据的时域符号个数的对应关系,后续根据TB包括的CBG个数和第一时频资源中的时域符号个数查询该对应关系,得到用于承载每个CBG的数据的时域符号个数。第一时频资源中的时域符号个数通常为7或14,CBG的个数通常会大于1且小于等于4。当第一时频资源中的时域符号个数为7时,前两个时域符号为控制信道,如果CBG个数m=4,则4个CBG分别占用2、1、1、1个时域符号,如果 m=3,则3个CBG分别占用2、2、1个时域符号,如果m=2,则2个CBG分别占用3、2个符号。当第一时频资源中的时域符号个数为14时,控制信道占用前两个时域符号,如果m=4,则4个CBG分别占用3、3、3、3个时域符号,如果m=3,则3个CBG分别占用4、4、4个时域符号,如果m=2,则2个CBG分别占用6、6个时域符号。或者,第一设备根据第一时频资源中mini-slot的分布来确定CBG占用的时域符号个数。例如,7个时域符号上,有三个mini-slot,三个mini-slot分别占用2、2、3个时域符号,那么三个CBG也分别占用2、2、3个时域符号。
第二种实现方式中,当N≥m时,根据下述公式计算用于承载CBG的数据的时域符号个数的两种可能取值N +和N -
Figure PCTCN2018083798-appb-000023
其中,
Figure PCTCN2018083798-appb-000024
表示向上取整运算,
Figure PCTCN2018083798-appb-000025
表示向下取整运算,N为第一时频资源中的时域符号个数,m表示TB中包括的CBG的个数。
然后,根据N -计算占用N +个时域符号的CBG的个数C +,其中,C +=N-mN -,则占用N -个时域符号的CBG的个数C -为:C -=C-C +。也可以先计算占用N -个时域符号的CBG的个数C -,其中,C -=mN +-N,则占用N +个时域符号的CBG的个数C +:C +=C-C -
在N<m的情况下,不可能做到每个CBG映射到完整符号上,这时需要让每个符号包含完整的CBG,这样可以最小化打孔影响的CBG数。
第三种实现方式中,当N<m时,根据下述公式计算每个时域符号上的CBG的个数的两种取值:m +和m -
Figure PCTCN2018083798-appb-000026
然后,根据m -计算承载m +个CBG的时域符号个数S +,其中,S +=m-Nm -,则承载m -个CBG的时域符号个数S -为:S -=N-S +。也可以先计算承载m -个CBG的时域符号的个数S -,其中,S -=Nm +-m,则承载m +个CBG的时域符号个数S +:S +=N-S -
上述当m=N时,根据第二种实现方式计算用于承载每个CBG的数据的时域符号个数,需要说明的是,当m=N时,也可以根据第三种实现方式计算用于承载每个CBG的数据的时域符号个数。
本实施例以N是第一时频资源中的时域符号个数为例进行说明书,实际上N也可以是第一时频资源中的mini-slot的个数。
步骤S203、第一设备根据用于承载每个CBG的数据的时域符号个数、CB个数和第一时频资源中的时域符号个数,确定每个CBG包括的CB个数。
一种实现方式中,第一设备根据如下公式计算每个CBG包括的CB个数:
Figure PCTCN2018083798-appb-000027
其中,N i表示用于承载第i个CBG的数据的时域符号个数,C i表示第i个CBG 包括的CB个数,m表示TB中包括的CBG个数,N为第一时频资源中的时域符号个数,floor表示取不大于输入值的最大整数。
上述计算方式中,一次把所有CBG包括的CB个数都算出来,另一种实现方式中,可以用迭代的方式,使用公式
Figure PCTCN2018083798-appb-000028
计算CBG包括的CB个数C i,其中,floor表示取不大于输入值的最大整数,每次计算一个CBG包括的CB个数,每次计算完后更新C为C-C i,更新N为N-N i。最后一个CBG包括的CB个数可以用CB个数C减去其他CBG包括的CB个数得到。
本实施例中,以资源单位为时域符号个数为例,当然资源单位也可以是:资源元素(resource element,RE)、资源块(resource block,RB)、资源块组(resource block group,RBG)等。其中,RB在频域上占用12个连续子载波,在时域上占用一个slot。RE在频域上占用一个子载波,在时域上占用一个时域符号。RBG包括多个RB。
步骤S204、第一设备根据用于承载每个CBG的数据的时域符号个数和每个CBG包括的CB个数,将每个CBG的数据映射到第一时频资源上。
步骤S205、第一设备将映射到第一时频资源上的TB发送给第二设备。
本实施例与实施例一的区别是:实施例一中在资源映射时,先确定每个CBG包括的CB个数,再根据每个CBG包括的CB个数确定用于承载每个CBG的数据的时域符号个数。本实施例中在资源映射时,先确定用于承载每个CBG的数据的时域符号个数,再根据用于承载每个CBG的数据的时域符号个数确定每个CBG包括的CB个数。本实施例的方法同样能够保证将每个CBG映射到一个或多个完整的时域符号上。在eMBB业务和URLLC业务共存的场景中,由于每个CBG的数据都是映射到一个或多个完整的时域符号上,不会出现一个时域符号上有两个CBG的数据,因此当URLLC业务数据抢占eMBB业务数据的时频资源的时候,抢占某一个时域符号的资源只会影响到某一个CBG的传输,而不会同时影响两个CBG的传输,从而能够有效地提升eMBB业务数据的传输效率。
需要说明的是,实施例二中步骤S201中可以采用实施例一种步骤S101揭示的TB的分段方法,同理,步骤S201中TB的分段方法与步骤S202-S203揭示的资源映射方法的方法也可以解耦,步骤S201中TB的分段方法可以使用现有的方法,资源映射方法使用步骤S202-S103揭示的资源映射方法;或者,步骤S201中TB的分段方法使用步骤S101揭示的TB的分段方法,资源映射方法使用其他的方法,如使用现有的资源映射方法。这里需要说明的是,现有的资源映射方式中,由于每个时域符号上,参考信号等不能用于数据传输的资源数不同,可能会造成某些CBG在映射时会占用承载该CBG的数据的时域符号外的资源,但是由于本申请在TB分段中的限制,该CBG占用的承载该CBG的数据的时域符号外的资源非常少,可以认为该CBG近似占用完整的时域符号,是可以接受的。
图7为实施例三提供的数据处理方法的流程图,如图7所示,本实施例提供的方法包括以下步骤:
步骤S301、第一设备根据TB的大小确定对TB进行CB分段后得到的CB个数C。
发送设备可以采用上述实施例一步骤S101揭示的TB的分段方法,也可以采用现有的TB分段的方法。
步骤S302、第一设备根据CB个数和第一时频资源中的时域符号个数,确定用于承载每个CB的数据的时域符号个数,其中,第一时频资源为用于承载TB的数据的时频资源。
当C<N时,第一设备先计算用于承载各CB的数据的时域符号个数的两种取值N +和N -,其中,
Figure PCTCN2018083798-appb-000029
Figure PCTCN2018083798-appb-000030
表示向上取整运算,
Figure PCTCN2018083798-appb-000031
表示向下取整运算,C为CB个数,N为第一时频资源中的时域符号个数。然后,第一设备计算用于承载CB的数据的时域符号个数为N +的CB个数C +,其中,C +=N-CN -,则用于承载CB的数据的时域符号个数为N -的CB个数C -为:C -=C-C +。也可以先计算用于承载CB的数据的时域符号个数为N -的CB个数C -,其中,C -=CN +-N,则用于承载CB的数据的时域符号个数为N +的CB个数C +为:C +=C-C -。用于承载CB的数据的时域符号个数也可以描述为CB的数据占用的时域符号个数,本申请中两种描述方式都表示同一个含义,在有些时候为了方便表述可以选择合适的方式。
当C≥N时,先计算用于承载CB的数据的时域符号个数相同的CB个数的两种取值C +和C -,其中,
Figure PCTCN2018083798-appb-000032
Figure PCTCN2018083798-appb-000033
表示向上取整运算,
Figure PCTCN2018083798-appb-000034
表示向下取整运算,C为CB个数,N为第一时频资源中的时域符号个数。然后,计算C +个CB的数据占用的时域符号个数N +,其中,N +=C-NC -,则C -个CB的数据占用的时域符号个数N -为:N -=N-N +。也可以先计算C -个CB的数据占用的时域符号数N -,其中,N -=NC +-C,则C +个CB的数据占用的时域符号个数N +为:N +=N-N -
上述两种计算方式使得每个CB的数据占用的时域符号个数,或者每个时域符号上承载的CB个数,尽量的均匀。例如,当N=7,C=2时,2个CB的数据占用的时域符号个数分别为4、3(也可以是3、4)。当N=7,C=10时,则7个时域符号上承载的CB个数分别为2、2、2、1、1、1、1(也可以是1、1、1、1、2、2、2),也就是说前6个CB的数据占用3个时域符号,每个CB的数据占用半个(0.5)时域符号,而后4个CB占用4个时域符号,每个CB占用1个时域符号。承载每个CB的数据的时域符号个数相近或每个时域符号上承载的CB的个数相近,也就意味着承载每个CB的数据的时频资源大小相近。当该TB中的各个CB的大小与承载CB的时频资源大小成正比时,也就使得该TB中的各个CB的大小相近。该TB中的各个CB的大小相近,对应的各个CB的编码增益也就相近,从而能够提升数据传输效率。
步骤S303、第一设备根据用于承载每个CB的数据的时域符号个数和CB个数确定每个CB的大小(size)。
确定的原则是CB的大小与CB占用的资源成正比,且多个CB的大小之和为TBS 加上新增循环冗余校验(Cyclic Redundancy Check,CRC)的长度,CB占用的资源即用于承载每个CB的数据的时域符号个数。CB大小和CB占用的时频资源成正比,可以使得每个CB在实际发送中的码率相近,进而使得每个CB译码成功率相近,从而提升数据传输效率。这是因为,如果CB大小和CB占用的时频资源成不成正比,例如,某个CB占用的时频资源比较小时,该CB的码率会提高,而CB码率提高会降低解码正确率,如果该CB解码失败,会引起TB、CBG或者部分CB的重传,降低传输效率。
一种实现方式中,第一设备根据公式一计算各CB的大小:
公式一:
Figure PCTCN2018083798-appb-000035
其中,s i表示第i个CB的大小,C表示CB个数,floor表示取不大于输入值的最大整数,r i表示用于承载第i个CB的数据的时域符号个数,N表示第一时频资源中的时域符号个数,B'表示TB大小加上C个CB的CRC后的大小。
另一种实现方式中,第一设备根据公式二计算各CB的大小:
公式二:
Figure PCTCN2018083798-appb-000036
其中,s i表示第i个CB的大小,C表示CB个数,floor表示取不大于输入值的最大整数,用于承载第i个CB的数据的时域符号个数,N表示第一时频资源中的时域符号个数,B'表示TB大小加上C个CB的CRC后的大小。
步骤S304、第一设备根据用于承载每个CB的数据的时域符号个数和每个CB的大小,将每个CB的数据映射到第一时频资源上。
步骤S305、第一设备将映射到第一时频资源上的TB发送给第二设备。
需要说明的是,本实施例中,第一设备可以使用现有资源映射方案,将编码后的CB映射到第一时频资源上,在映射时按照先频域再时域的顺序映射即可。第一设备也可以按照上述实施例一中步骤S102揭示的方法先确定每个CBG包括的CB个数,由于每个CB的数据占用的时域符号个数已经确定了,在确定每个CBG包括的CB个数后,每个CBG的数据占用的时域符号个数也就唯一确定了,然后根据每个CBG的数据占用的时域符号个数,将每个CBG的数据映射到第一时频资源上。因此,本实施例的方法同样能够保证将每个CBG映射到一个或多个完整的时域符号上。由于每个CBG的数据都是映射到一个或多个完整的时域符号上,不会出现一个时域符号上有两个CBG的数据,因此当URLLC业务数据抢占eMBB业务数据的时频资源的时候,抢占某一个时域符号的资源只会影响到某一个CBG的传输,而不会同时影响两个CBG的传输,从而能够有效地提升eMBB业务数据的传输效率。
可选的,网络设备可以通过信令通知终端设备,是否将CBG的数据映射到完整的时域符号上(也称为资源对齐)。例如,网络设备可以通过无线资源控制(radio resource control,RRC)信令或物理层信令向终端设备发送指示信息,该指示信息用于指示是否会将CBG的数据映射到完整的时域符号上。一种可能的配置策略是:对于URLLC和eMBB业务数据共存的频带上,由于可能出现URLLC业务数据抢占eMBB业务数据的时频资源,因此可以配置为将CBG的数据映射到完整的时域符号上;对于不存在URLLC业务数据抢占eMBB业务数据的时频资源的频带上,可以不配置将CBG的数据映射到完整的时域符号上。
图8为实施例四提供的数据处理方法的流程图,本实施例的方法是实施例一提供的发送端的数据处理方法对应的接收端的数据处理方法,该如图8所示,本实施例提供的方法包括以下步骤:
步骤S401、第二设备接收第一设备发送的TB。
本实施例中,第二设备为接收端设备,第一设备为发送端设备。
步骤S402、第二设备根据TB的大小确定对TB进行CB分段后得到的CB个数C。
可选的,CB个数C为满足以下两个条件的最小整数,其中,
条件一:C mod N=0或N mod C=0,其中,N为第一时频资源中的时域符号个数,mod表示取余运算;
条件二:
Figure PCTCN2018083798-appb-000037
其中,Z为CB的大小的最大值,TBS为所述TB的大小。
或者,CB个数C为满足以下三个条件的最小整数,其中,
条件一:C mod N=0或N mod C=0,其中,N为第一时频资源中的时域符号个数,mod表示取余运算;
条件二:
Figure PCTCN2018083798-appb-000038
其中,Z为CB的大小的最大值,TBS为TB的大小;
条件三:C mod m=0,其中,m为TB中包括的CBG的个数。
步骤S403、第二设备根据预先获取的TB包括的CBG个数和CB个数,确定每个CBG包括的CB个数。
可选的,第二设备根据预先获取的TB包括的CBG个数和CB个数,确定每个CBG包括的CB个数,具体为:
根据下述公式计算第一参数C -
Figure PCTCN2018083798-appb-000039
其中,C表示CB个数,m表示所述TB中包括的CBG个数,floor表示取不大于输入值的最大整数;
根据第一参数C -计算第二参数Δ,Δ=C-mC -
确定m个CBG中前Δ个或后Δ个CBG包括C -+1个CB,剩下的CBG包括C -个CB。
步骤S404、第二设备根据每个CBG包括的CB个数和第一时频资源中的时域符 号个数,确定第一时频资源中用于承载每个CBG的数据的时域符号个数,其中,第一时频资源为用于承载TB的数据的时频资源。
可选的,第二设备根据如下公式计算第一时频资源中用于承载每个CBG的数据的时域符号个数:
Figure PCTCN2018083798-appb-000040
其中,N i表示第一时频资源中用于承载第i个CBG的数据的时域符号个数,C i表示第i个CBG包括的CB个数,m表示TB中包括的CBG的个数,N为第一时频资源中的时域符号个数,floor表示取不大于输入值的最大整数。
步骤S405、第二设备根据用于承载每个CBG的数据的时域符号个数,将每个CBG的数据从第一时频资源中解码出来。
如果某个CBG解码失败,则第二设备只需要向第一设备反馈该CBG的NACK消息,第一设备根据第二设备的反馈,对该CBG进行重传,而不需要对整个TB进行重传,从而提高了传输效率。
本实施例的方法是实施例一提供的发送端的数据处理方法对应的接收端的数据处理方法,在一次数据传输过程中,发送端和接收端采用同样的方法进行TB分段以及资源映射,这里不加赘述。
同理,实施例二和实施例三提供的发送端的数据处理方法,接收端也会采用相同的数据处理方法对接收到的TB进行处理,这里不再重复描述。
图9为实施例五提供的数据处理装置的结构示意图,如图9所示,本实施例的数据处理装置包括:
分段模块11,用于根据传输块TB的大小确定对所述TB进行编码块CB分段后得到的CB个数C;
第一确定模块12,用于根据预先获取的所述TB包括的编码块组CBG个数和所述CB个数,确定每个CBG包括的CB个数;
第二确定模块13,用于根据所述每个CBG包括的CB个数和第一时频资源中的时域符号个数,确定所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数,其中,所述第一时频资源为用于承载所述TB的数据的时频资源;
映射模块14,用于根据用于承载所述每个CBG的数据的时域符号个数,将所述每个CBG的数据映射到所述第一时频资源上。
可选的,所述第二确定模块13具体用于:
根据如下公式计算所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数:
Figure PCTCN2018083798-appb-000041
其中,N i表示所述第一时频资源中用于承载第i个CBG的数据的时域符号个数,C i表示第i个CBG包括的CB个数,m表示所述TB中包括的CBG的个数,N为所述第一时频资源中的时域符号个数,floor表示取不大于输入值的最大整数。
可选的,所述CB个数C为满足以下两个条件的最小整数,其中,
条件一:C mod N=0或N mod C=0,其中,N为所述第一时频资源中的时域符号个数,mod表示取余运算;
条件二:
Figure PCTCN2018083798-appb-000042
其中,Z为CB的大小的最大值,TBS为所述TB的大小。
可选的,所述CB个数C为满足以下三个条件的最小整数,其中,
条件一:C mod N=0或N mod C=0,其中,N为所述第一时频资源中的时域符号个数,mod表示取余运算;
条件二:
Figure PCTCN2018083798-appb-000043
其中,Z为CB的大小的最大值,TBS为所述TB的大小;
条件三:C mod m=0,其中,m为所述TB中包括的CBG的个数。
可选的,所述第一确定模块具体用于:
根据下述公式计算第一参数C -
Figure PCTCN2018083798-appb-000044
其中,C表示所述CB个数,m表示所述TB中包括的CBG个数,floor表示取不大于输入值的最大整数;
根据所述第一参数C -计算第二参数Δ,Δ=C-mC -
确定所述m个CBG中前Δ个或后Δ个CBG包括C -+1个CB,剩下的CBG包括C -个CB。
本实施例的装置可以用于执行上述实施例一的方法,具体实现方式和技术效果类似,这里不加赘述。
对于本领域的技术人员,可以参考本实施例的装置直接得到用于执行上述实施例二和实施例三的方法的装置,这里不加赘述。
图10为实施例六提供的数据处理装置的结构示意图,如图10所示,本实施例的数据处理装置包括:
接收模块21,用于接收第一设备发送的传输块TB;
分段模块22,用于根据所述TB的大小确定对所述TB进行编码块CB分段后得到的CB个数C;
第一确定模块23,用于根据预先获取的所述TB包括的编码块组CBG个数和所述CB个数,确定每个CBG包括的CB个数;
第二确定模块24,用于根据所述每个CBG包括的CB个数和第一时频资源中的时域符号个数,确定所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数,其中,所述第一时频资源为用于承载所述TB的数据的时频资源;
解码模块25,用于根据用于承载所述每个CBG的数据的时域符号个数,将所述每个CBG的数据从所述第一时频资源中解码出来。
可选的,所述第二确定模块24具体用于:
根据如下公式计算所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数:
Figure PCTCN2018083798-appb-000045
其中,N i表示所述第一时频资源中用于承载第i个CBG的数据的时域符号个数,C i表示第i个CBG包括的CB个数,m表示所述TB中包括的CBG的个数,N为所述第一时频资源中的时域符号个数,floor表示取不大于输入值的最大整数。
可选的,所述CB个数C为满足以下两个条件的最小整数,其中,
条件一:C mod N=0或N mod C=0,其中,N为所述第一时频资源中的时域符号个数,mod表示取余运算;
条件二:
Figure PCTCN2018083798-appb-000046
其中,Z为CB的大小的最大值,TBS为所述TB的大小。
可选的,所述CB个数C为满足以下三个条件的最小整数,其中,
条件一:C mod N=0或N mod C=0,其中,N为所述第一时频资源中的时域符号个数,mod表示取余运算;
条件二:
Figure PCTCN2018083798-appb-000047
其中,Z为CB的大小的最大值,TBS为所述TB的大小;
条件三:C mod m=0,其中,m为所述TB中包括的CBG的个数。
可选的,所述第一确定模块23具体用于:
根据下述公式计算第一参数C -
Figure PCTCN2018083798-appb-000048
其中,C表示所述CB个数,m表示所述TB中包括的CBG个数,floor表示取不大于输入值的最大整数;
根据所述第一参数C -计算第二参数Δ,Δ=C-mC -
确定所述m个CBG中前Δ个或后Δ个CBG包括C -+1个CB,剩下的CBG包括C -个CB。
本实施例的装置可以用于执行上述实施例四的方法,具体实现方式和技术效果类似,这里不加赘述。
对于本领域的技术人员,可以参考本实施例的装置直接得到用于执行与上述实施例二和实施例三的方法向对应的接收侧的方法的装置,这里不加赘述。
图11为实施例七提供的数据处理装置的结构示意图,如图11所示,本实施例的数据处理装置包括:包括处理器31、存储器32和通信接口33,所述存储器32用于存储指令,所述通信接口33用于和其他设备通信,所述处理器31用于执行所述存储器32中存储的指令,以使所述数据处理装置执行上述实施例一至实施例三的方法,具体实现方式技术效果类似,这里不再赘述。
图12为实施例八提供的数据处理装置的结构示意图,如图12所示,本实施例的数据处理装置包括:包括处理器41、存储器42和通信接口43,所述存储器42用于存储指令,所述通信接口43用于和其他设备通信,所述处理器41用于执行所述存储器42中存储的指令,以使所述数据处理装置执行上述实施例四的方法,具体实现方式技术效果类似,这里不再赘述。该数据处理装置还可以执行实施例二和实施例三提供的发送端的数据处理方法对应的接收端采用的数据处理方法,其中,发送端和接收端采用相同的数据处理方法相同,这里不再重复描述。
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指令。在计算机上加载和执行所述计算机程序指令时,全部或部分地产生按照本发明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。所述计算机指令可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一个计算机可读存储介质传输,例如,所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。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包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质,(例如,软盘、硬盘、磁带)、光介质(例如,DVD)、或者半导体介质(例如固态硬盘(Solid State Disk,SSD))等。
在本申请所提供的几个实施例中,所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。

Claims (20)

  1. 一种数据处理方法,其特征在于,包括:
    第一设备根据传输块TB的大小确定对所述TB进行编码块CB分段后得到的CB个数C;
    所述第一设备根据预先获取的所述TB包括的编码块组CBG个数和所述CB个数,确定每个CBG包括的CB个数;
    所述第一设备根据所述每个CBG包括的CB个数和第一时频资源中的时域符号个数,确定所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数,其中,所述第一时频资源为用于承载所述TB的数据的时频资源;
    所述第一设备根据用于承载所述每个CBG的数据的时域符号个数,将所述每个CBG的数据映射到所述第一时频资源上。
  2. 根据权利要求1所述的方法,其特征在于,所述第一设备根据所述每个CBG包括的CB个数和第一时频资源中的时域符号个数,确定所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数,包括:
    所述第一设备根据如下公式计算所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数:
    Figure PCTCN2018083798-appb-100001
    其中,N i表示所述第一时频资源中用于承载第i个CBG的数据的时域符号个数,C i表示第i个CBG包括的CB个数,m表示所述TB中包括的CBG的个数,N为所述第一时频资源中的时域符号个数,floor表示取不大于输入值的最大整数。
  3. 根据权利要求1或2所述的方法,其特征在于,所述CB个数C为满足以下两个条件的最小整数,其中,
    条件一:C mod N=0或N mod C=0,其中,N为所述第一时频资源中的时域符号个数,mod表示取余运算;
    条件二:
    Figure PCTCN2018083798-appb-100002
    其中,Z为CB的大小的最大值,TBS为所述TB的大小。
  4. 根据权利要求1或2所述的方法,其特征在于,所述CB个数C为满足以下三个条件的最小整数,其中,
    条件一:C mod N=0或N mod C=0,其中,N为所述第一时频资源中的时域符号个数,mod表示取余运算;
    条件二:
    Figure PCTCN2018083798-appb-100003
    其中,Z为CB的大小的最大值,TBS为所述TB的大小;
    条件三:C mod m=0,其中,m为所述TB中包括的CBG的个数。
  5. 根据权利要求1-4任一项所述的方法,其特征在于,所述第一设备根据预先获取的所述TB包括的编码块组CBG个数和所述CB个数,确定每个CBG包括的CB个 数,包括:
    根据下述公式计算第一参数C -
    Figure PCTCN2018083798-appb-100004
    其中,C表示所述CB个数,m表示所述TB中包括的CBG个数,floor表示取不大于输入值的最大整数;
    根据所述第一参数C -计算第二参数Δ,Δ=C-mC -
    确定所述m个CBG中前Δ个或后Δ个CBG包括C -+1个CB,剩下的CBG包括C -个CB。
  6. 一种数据处理方法,其特征在于,包括:
    第二设备接收第一设备发送的传输块TB;
    所述第二设备根据所述TB的大小确定对所述TB进行编码块CB分段后得到的CB个数C;
    所述第二设备根据预先获取的所述TB包括的编码块组CBG个数和所述CB个数,确定每个CBG包括的CB个数;
    所述第二设备根据所述每个CBG包括的CB个数和第一时频资源中的时域符号个数,确定所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数,其中,所述第一时频资源为用于承载所述TB的数据的时频资源;
    所述第二设备根据用于承载所述每个CBG的数据的时域符号个数,将所述每个CBG的数据从所述第一时频资源中解码出来。
  7. 根据权利要求6所述的方法,其特征在于,所述第二设备根据所述每个CBG包括的CB个数和第一时频资源中的时域符号个数,确定所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数,包括:
    所述第二设备根据如下公式计算所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数:
    Figure PCTCN2018083798-appb-100005
    其中,N i表示所述第一时频资源中用于承载第i个CBG的数据的时域符号个数,C i表示第i个CBG包括的CB个数,m表示所述TB中包括的CBG的个数,N为所述第一时频资源中的时域符号个数,floor表示取不大于输入值的最大整数。
  8. 根据权利要求6或7所述的方法,其特征在于,所述CB个数C为满足以下两个条件的最小整数,其中,
    条件一:C mod N=0或N mod C=0,其中,N为所述第一时频资源中的时域符号个数,mod表示取余运算;
    条件二:
    Figure PCTCN2018083798-appb-100006
    其中,Z为CB的大小的最大值,TBS为所述TB的大小。
  9. 根据权利要求6或7所述的方法,其特征在于,所述CB个数C为满足以下三 个条件的最小整数,其中,
    条件一:C mod N=0或N mod C=0,其中,N为所述第一时频资源中的时域符号个数,mod表示取余运算;
    条件二:
    Figure PCTCN2018083798-appb-100007
    其中,Z为CB的大小的最大值,TBS为所述TB的大小;
    条件三:C mod m=0,其中,m为所述TB中包括的CBG的个数。
  10. 根据权利要求6-9任一项所述的方法,其特征在于,所述第二设备根据预先获取的所述TB包括的CBG个数和所述CB个数,确定每个CBG包括的CB个数,包括:
    根据下述公式计算第一参数C -
    Figure PCTCN2018083798-appb-100008
    其中,C表示所述CB个数,m表示所述TB中包括的CBG个数,floor表示取不大于输入值的最大整数;
    根据所述第一参数C -计算第二参数Δ,Δ=C-mC -
    确定所述m个CBG中前Δ个或后Δ个CBG包括C -+1个CB,剩下的CBG包括C -个CB。
  11. 一种数据处理装置,其特征在于,包括:
    分段模块,用于根据传输块TB的大小确定对所述TB进行编码块CB分段后得到的CB个数C;
    第一确定模块,用于根据预先获取的所述TB包括的编码块组CBG个数和所述CB个数,确定每个CBG包括的CB个数;
    第二确定模块,用于根据所述每个CBG包括的CB个数和第一时频资源中的时域符号个数,确定所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数,其中,所述第一时频资源为用于承载所述TB的数据的时频资源;
    映射模块,用于根据用于承载所述每个CBG的数据的时域符号个数,将所述每个CBG的数据映射到所述第一时频资源上。
  12. 根据权利要求11所述的装置,其特征在于,所述第二确定模块具体用于:
    根据如下公式计算所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数:
    Figure PCTCN2018083798-appb-100009
    其中,N i表示所述第一时频资源中用于承载第i个CBG的数据的时域符号个数,C i表示第i个CBG包括的CB个数,m表示所述TB中包括的CBG的个数,N为所述第一时频资源中的时域符号个数,floor表示取不大于输入值的最大整数。
  13. 根据权利要求11或12所述的装置,其特征在于,所述CB个数C为满足以下两个条件的最小整数,其中,
    条件一:C mod N=0或N mod C=0,其中,N为所述第一时频资源中的时域符号个数,mod表示取余运算;
    条件二:
    Figure PCTCN2018083798-appb-100010
    其中,Z为CB的大小的最大值,TBS为所述TB的大小。
  14. 根据权利要求11或12所述的装置,其特征在于,所述CB个数C为满足以下三个条件的最小整数,其中,
    条件一:C mod N=0或N mod C=0,其中,N为所述第一时频资源中的时域符号个数,mod表示取余运算;
    条件二:
    Figure PCTCN2018083798-appb-100011
    其中,Z为CB的大小的最大值,TBS为所述TB的大小;
    条件三:C mod m=0,其中,m为所述TB中包括的CBG的个数。
  15. 根据权利要求11-14任一项所述的装置,其特征在于,所述第一确定模块具体用于:
    根据下述公式计算第一参数C -
    Figure PCTCN2018083798-appb-100012
    其中,C表示所述CB个数,m表示所述TB中包括的CBG个数,floor表示取不大于输入值的最大整数;
    根据所述第一参数C -计算第二参数Δ,Δ=C-mC -
    确定所述m个CBG中前Δ个或后Δ个CBG包括C -+1个CB,剩下的CBG包括C -个CB。
  16. 一种数据处理装置,其特征在于,包括:
    接收模块,用于接收第一设备发送的传输块TB;
    分段模块,用于根据所述TB的大小确定对所述TB进行编码块CB分段后得到的CB个数C;
    第一确定模块,用于根据预先获取的所述TB包括的编码块组CBG个数和所述CB个数,确定每个CBG包括的CB个数;
    第二确定模块,用于根据所述每个CBG包括的CB个数和第一时频资源中的时域符号个数,确定所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数,其中,所述第一时频资源为用于承载所述TB的数据的时频资源;
    解码模块,用于根据用于承载所述每个CBG的数据的时域符号个数,将所述每个CBG的数据从所述第一时频资源中解码出来。
  17. 根据权利要求16所述的装置,其特征在于,所述第二确定模块具体用于:
    根据如下公式计算所述第一时频资源中用于承载所述每个CBG的数据的时域符号个数:
    Figure PCTCN2018083798-appb-100013
    其中,N i表示所述第一时频资源中用于承载第i个CBG的数据的时域符号个数,C i表示第i个CBG包括的CB个数,m表示所述TB中包括的CBG的个数,N为所述第一时频资源中的时域符号个数,floor表示取不大于输入值的最大整数。
  18. 根据权利要求16或17所述的装置,其特征在于,所述CB个数C为满足以下两个条件的最小整数,其中,
    条件一:C mod N=0或N mod C=0,其中,N为所述第一时频资源中的时域符号个数,mod表示取余运算;
    条件二:
    Figure PCTCN2018083798-appb-100014
    其中,Z为CB的大小的最大值,TBS为所述TB的大小。
  19. 根据权利要求16或17所述的装置,其特征在于,所述CB个数C为满足以下三个条件的最小整数,其中,
    条件一:C mod N=0或N mod C=0,其中,N为所述第一时频资源中的时域符号个数,mod表示取余运算;
    条件二:
    Figure PCTCN2018083798-appb-100015
    其中,Z为CB的大小的最大值,TBS为所述TB的大小;
    条件三:C mod m=0,其中,m为所述TB中包括的CBG的个数。
  20. 根据权利要求16-19任一项所述的装置,其特征在于,所述第一确定模块具体用于:
    根据下述公式计算第一参数C -
    Figure PCTCN2018083798-appb-100016
    其中,C表示所述CB个数,m表示所述TB中包括的CBG个数,floor表示取不大于输入值的最大整数;
    根据所述第一参数C -计算第二参数Δ,Δ=C-mC -
    确定所述m个CBG中前Δ个或后Δ个CBG包括C -+1个CB,剩下的CBG包括C -个CB。
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