WO2017185931A1 - 一种生成传输块的方法和装置 - Google Patents

一种生成传输块的方法和装置 Download PDF

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Publication number
WO2017185931A1
WO2017185931A1 PCT/CN2017/078186 CN2017078186W WO2017185931A1 WO 2017185931 A1 WO2017185931 A1 WO 2017185931A1 CN 2017078186 W CN2017078186 W CN 2017078186W WO 2017185931 A1 WO2017185931 A1 WO 2017185931A1
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tbs
resource
rbs
receiving device
symbols
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PCT/CN2017/078186
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English (en)
French (fr)
Inventor
葛士斌
毕晓艳
陈大庚
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华为技术有限公司
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Priority to EP17788584.5A priority Critical patent/EP3439361B1/en
Publication of WO2017185931A1 publication Critical patent/WO2017185931A1/zh
Priority to US16/169,849 priority patent/US10834633B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • H04L1/0007—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a method and apparatus for generating a transport block.
  • a transport block is a basic unit for exchanging data between a physical layer and a Media Access Control (MAC) layer.
  • the transport block size (TBS) depends on the Modulation and Coding Scheme (MCS) and the time-frequency resource size allocated to the terminal.
  • MCS Modulation and Coding Scheme
  • FIG. 1 is a schematic diagram of a logical structure of an existing resource block pair 100.
  • the resource block pair 100 is located within a subframe (not shown), and in addition to the resource block pair 100 shown in FIG. 1, the subframe further includes other resource block pairs (not shown).
  • the resource block pair 100 includes a resource block 102 and a resource block 104.
  • the resource block 102 and the resource block 104 are carried by the same set of consecutive subcarriers (Subcarriers) in the frequency domain, and the set of subcarriers includes 12 subcarriers.
  • resource block 102 and resource block 104 belong to different slots, such as resource block 102 belonging to slot 0 and resource block 104 belonging to slot 1.
  • each time slot contains seven symbols in the time domain, as shown in FIG.
  • each slot contains 6 symbols (not shown) in the time domain.
  • the smallest resource unit in the resource block pair 100 is a Resource Element (RE), such as a resource granule 106, and each resource granule is carried by one subcarrier in the frequency domain and one symbol in the time domain, so the conventional cyclic prefix is adopted.
  • RE Resource Element
  • each of the resource blocks 102 and the resource block 104 contains 168 resource particles; in the case of the extended cyclic prefix, the resource block 102 and the resource block 104 are both Contains 72 (12 ⁇ 6) resource particles, and resource block pair 100 contains 144 resource particles.
  • a resource block is also called a Physical Resource Block (PRB).
  • the existing LTE standard determines the TBS by using the following method: determining the MCS used for the time-frequency resource bearer data allocated to the terminal; and obtaining the TBS corresponding to the determined MCS index value of the MCS from the correspondence table of the MCS index value and the TBS index value
  • the index value is obtained by acquiring the number of PRBs allocated to the terminal; and in the correspondence table of the TBS index value, the number of PRBs, and the TBS, searching for the TBS corresponding to the acquired TBS index value and the number of PRBs.
  • the number of symbols included in the PRB is fixed (7 or 6) after the cyclic prefix type (conventional cyclic prefix or extended cyclic prefix) is determined.
  • the number of symbols included in the PRB may not be fixed, but may be changed frequently according to needs (such as service type). As a result, the existing method of determining TBS will no longer apply.
  • the embodiment of the present invention provides a method and an apparatus for generating a transport block.
  • the technical solution is as follows:
  • an embodiment of the present invention provides a method for generating a transport block, where the method includes:
  • a size TBS of the transport block TB based on a modulation and coding policy MCS of the receiving device, a resource feature and a number of symbols of the resource block RB allocated to the receiving device, wherein the number of symbols is a symbol included in each of the RBs Quantity, each of the RBs contains the same number of symbols;
  • the TB is generated based on the TBS.
  • the TBS is determined based on the MCS of the receiving device, the resource characteristics of the RBs allocated to the receiving device, and the number of symbols included in the RB, and generates a TB based on the determined TBS. Since the number of symbols included in the RB is taken into consideration in determining the TBS, when the number of symbols included in the RB changes, the determined TBS may change accordingly, and the TB generated based on the determined TBS may avoid causing waste of time-frequency resources and The error correction performance is poor to meet the business needs, and is suitable for generating TB in the case of a change in the number of symbols included in the RB.
  • determining the TBS based on the MCS of the receiving device, the resource feature of the RB allocated to the receiving device, and the number of symbols specifically:
  • the TBS is determined based on the TBS index value, resource characteristics of the RB, and the number of symbols.
  • the TBS index value is first determined based on the MCS, and then the TBS is determined according to the TBS index value, which has less modification to the prior art and is more compatible.
  • the resource feature of the RB is the number of the RBs.
  • the resource feature of the RB is the number of equivalent RBs, the number of the equivalent RBs is associated with the resource utilization of the RB, and the resource utilization of the RB is occupied by data in the RB.
  • Adaptation is made to the change of resource utilization of RB.
  • the determining the TBS based on the TBS index value, the resource feature of the RB, and the number of the symbols includes:
  • the TBS is determined based on the TBS index value, the number of equivalent RBs, and the number of symbols.
  • the determining the TBS based on the TBS index value, the resource feature of the RB, and the number of the symbols includes:
  • the TBS is determined based on the TBS index value, the number of equivalent RBs, and the number of symbols.
  • a method for determining the number of two equivalent RBs is provided, and an optimal implementation can be selected according to actual conditions.
  • the resource feature of the RB is a product of the number of the RBs and the number of spatial multiplexing layers.
  • the determining the TBS based on the TBS index value, the resource feature of the RB, and the number of the symbols includes:
  • the TBS of the layer determines the TBS.
  • TBS For the impact of the spatial multiplexing technology on the TBS, different methods are used to determine the TBS for the size relationship between the resource size allocated to the receiving device and the size of the base station callable time-frequency resource, and the TBS correspondence table is allocated to the receiving station at the base station.
  • an embodiment of the present invention provides an apparatus for generating a transport block, the apparatus comprising means for implementing the method of the first aspect, such as a determining unit and a generating unit.
  • an embodiment of the present invention further provides an apparatus for generating a transport block, where the apparatus includes: a memory, a processor connected to the memory, the memory is used to store a software program and a module, when the processor is used by
  • the method of the first aspect can be performed when running or executing a software program and modules stored in the memory.
  • an embodiment of the present invention further provides a computer readable medium for storing program code for execution by a terminal, the program code comprising instructions for performing the method of the first aspect.
  • the TBS is determined based on the MCS of the receiving device, the number of RBs allocated to the receiving device, and the number of symbols included in the RB, and generates a TB based on the determined TBS. Since the number of symbols included in the RB is taken into consideration in determining the TBS, when the number of symbols included in the RB changes, the determined TBS may change accordingly, and the TB generated based on the determined TBS may avoid causing waste of time-frequency resources and The error correction performance is poor to meet the business needs, and is suitable for generating TB in the case of a change in the number of symbols included in the RB.
  • FIG. 1 is a schematic structural diagram of a resource block pair according to an embodiment of the present invention.
  • FIG. 2 is an application scenario diagram of a method for generating a TB according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of time-frequency resources allocated to a terminal according to an embodiment of the present invention.
  • FIG. 4 is a hardware structural diagram of a base station for implementing a method for generating a TBS according to an embodiment of the present invention
  • FIG. 5a is a flowchart of a method for generating a TB according to an embodiment of the present invention
  • FIG. 5b is a flowchart of another method for generating a TB according to an embodiment of the present invention.
  • FIG. 5c is a flowchart of still another method for generating a TB according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of still another method for generating a TB according to an embodiment of the present invention.
  • FIG. 5e is a flowchart of still another method for generating a TB according to an embodiment of the present invention.
  • FIG. 5f is a flowchart of still another method for generating a TB according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a resource mapping mode according to an embodiment of the present invention.
  • FIG. 7a is a flowchart of still another method for generating a TB according to an embodiment of the present invention.
  • FIG. 7b is a flowchart of still another method for generating a TB according to an embodiment of the present invention.
  • FIG. 7c is a flowchart of still another method for generating a TB according to an embodiment of the present invention.
  • FIG. 7d is a flowchart of still another method for generating a TB according to an embodiment of the present invention.
  • FIG. 7e is a flowchart of still another method for generating a TB according to an embodiment of the present invention.
  • FIG. 7f is a flowchart of still another method for generating a TB according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of still another method for generating a TB according to an embodiment of the present invention.
  • FIG. 8b is a flowchart of still another method for generating a TB according to an embodiment of the present invention.
  • FIG. 8c is a flowchart of still another method for generating a TB according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of still another method for generating a TB according to an embodiment of the present invention.
  • FIG. 8e is a flowchart of still another method for generating a TB according to an embodiment of the present invention.
  • FIG. 8f is a flowchart of still another method for generating a TB according to an embodiment of the present invention.
  • FIG. 9 is a flowchart of still another method for generating a TB according to an embodiment of the present invention.
  • FIG. 9b is a flowchart of still another method for generating a TB according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of an apparatus for generating a TB according to an embodiment of the present invention.
  • a “module” as referred to herein refers to a program or instruction stored in a memory that is capable of implementing certain functions;
  • "unit” as referred to herein refers to a functional structure that is logically divided, the “unit” may be Pure hardware implementation, or a combination of hardware and software.
  • the terminal 10 and the terminal 20 are located in a service area of the base station 30 (circled in an elliptical shape in FIG. 2), and the base station 30 allocates time-frequency resources to the terminal 10 and the terminal 20, respectively.
  • the time-frequency resources allocated by the base station 30 to the terminal 10 are used to carry data transmitted by the base station 30 to the terminal 10.
  • the time-frequency resources allocated by the base station 30 to the terminal 20 are used to carry data transmitted by the base station 10 to the terminal 20.
  • the number of terminals in FIG. 2 is only an example, and the actual number of terminals that provide communication services by the base station is subject to change.
  • the time-frequency resources allocated by the base station 30 for the terminal 10 include two RB pairs that are consecutive in the frequency domain, and the time-frequency resources allocated by the base station 30 for the terminal 20 are included in the frequency domain. Three consecutive RB pairs.
  • the RB of the present application may be similar to the RB in the existing LTE standard, except that although all RBs in the same scheduling interval contain the same number of symbols, RBs in different scheduling intervals may have different numbers of symbols.
  • the scheduling interval here may be one time slot, or one subframe, or a time interval of other values, and the specific length may be set according to requirements. For example, if the scheduling interval is one slot, the number of symbols included in all RBs in slot A is the same, but the number of symbols included in the RB in slot A is different from the number of symbols included in the RB in slot B.
  • resource blocks in the LTE standard can be simplified into a single form, a resource unit.
  • the resource unit is carried by a set of consecutive or non-contiguous subcarriers and carried on a set of consecutive or non-contiguous symbols.
  • the number of symbols included in resource units in different scheduling intervals may be different, and the number of subcarriers included in resource units in different scheduling intervals may also be different.
  • the technical solutions of the present application are still described by taking RB as an example, but those skilled in the art should understand that such RB can be understood as the above resource unit.
  • the fifth generation mobile communication technology supports Enhanced Mobile Broadband (eMBB), Massive Machine Type Communication (MMTC), and ultra-high reliability.
  • Low latency communication Ultra Reliable and Low Latency Communication (UR/LI) is a three-category application scenario.
  • the eMBB is characterized by a high throughput.
  • TTI Transmission Time Interval
  • mMTC supports high-density connections and is typically transmitted in packets, which is suitable for shorter TTIs; UR/LI requires low latency and requires a shorter TTI. In this way, the 5G system supports different lengths of scheduling intervals for different scenarios.
  • the embodiment of the present invention provides a technique for determining a TBS and generating a TB based on the determined TBS, considering the MCS, the number of symbols, and the number of RBs, and can be applied to symbols included in RBs such as 5G.
  • the system in which the number changes can also be applied to a system in which the number of symbols included in the RB such as LTE is constant.
  • the MCS is an MCS in a scheduling interval
  • the RB is an RB allocated to, for example, a terminal in one scheduling interval.
  • the number of symbols included in all RBs is the same in one scheduling interval, so the number of the above-mentioned symbols considered in determining the TBS is the symbol included in each RB in one scheduling interval. Quantity.
  • a base station that implements the method for generating a TB provided by an embodiment of the present invention is described below in conjunction with a specific hardware structure.
  • FIG. 4 shows a base station structure for implementing a method for generating a TB according to an embodiment of the present invention.
  • the base station 30 includes a plurality of antennas 31 and a radio frequency module 32 (Radio Remote Unit (RRU) or Radio Frequency Unit (RFU), and a Baseband Unit (BBU) 33.
  • the baseband unit 33 includes a memory 331, a processor 332, a transmitter 333, and a receiver 334. It should be noted that the structure of the base station 30 shown in FIG. 3 does not constitute a limitation of the base station 30, and may include a ratio in practical applications. More or fewer components are illustrated, or some components are combined, or different component arrangements.
  • the processor 332 is the control center of the base station 30, which connects various portions of the entire base station 30 using various interfaces and lines, by running or executing software programs and/or modules stored in the memory 331, and recalling data stored in the memory 331.
  • the various functions and processing data of the base station 30 are performed to perform overall control of the base station 30.
  • processor 332 can include one or more processing cores.
  • Memory 331 can be used to store various data, such as various configuration parameters, as well as to store software programs and modules.
  • the processor 332 executes various functional applications and data processing by running software programs and modules stored in the memory 331.
  • the memory 331 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system 331a, a determination module 331b, a generation module 331c, and the like; the storage data area may store data created according to the use of the base station 30, such as TBS. Index value, etc.
  • the memory 331 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as a static random access memory (SRAM), an electrically erasable programmable read only memory.
  • SRAM static random access memory
  • memory 331 may also include a memory controller to provide processor 332 access to memory 331.
  • the BBU 33 is connected to the RF module 32, and the RF module 32 is connected to the antenna 31 via a cable.
  • the BBU 33 outputs a baseband signal to the RF module 32.
  • the RF module 32 converts the baseband signal to the intermediate frequency signal, converts the intermediate frequency signal to the RF signal, and then amplifies the RF signal by using a power amplifier unit (such as a radio frequency power amplifier), and finally transmits the amplified RF signal through the antenna 31.
  • a power amplifier unit such as a radio frequency power amplifier
  • the radio frequency signal from the terminal is transmitted to the radio frequency module 32 via the antenna 31.
  • the RF module 32 first amplifies the RF signal, converts it to an IF signal, and then changes The frequency is transmitted to the baseband signal, and then the baseband signal is output to the BBU 33.
  • the plurality of antennas 31 can implement MIMO spatial multiplexing.
  • the same time-frequency resources are used to transmit different data on different spatially divided layers, and the space resources are utilized to increase the system capacity.
  • the technical solution described below should be understood as a method of generating a TB for one scheduling interval unless otherwise specified.
  • the MCS remains unchanged, and the number of symbols included in all RBs is the same, so the number of symbols considered in determining the TBS is the number of symbols included in each RB in a scheduling interval.
  • FIG. 5a is a flowchart of a method for generating a TB according to an exemplary embodiment of the present application.
  • the transmitting device (the base station as described in FIG. 4) allocates time-frequency resources to the receiving device (such as the terminal), and the time-frequency resource allocated to the receiving device includes one or more RBs.
  • the method includes:
  • Step 201a Determine the TBS based on the MCS of the receiving device, the number of RBs allocated to the receiving device, and the number of symbols.
  • each RB includes the same number of symbols, and the number of symbols on which the TBS is determined is determined to be the number of symbols included in each RB.
  • the sending device determines the MCS according to the channel condition fed back by the receiving device, and can allocate the receiving device according to the callable time-frequency resource, the service type of the receiving device (such as a call, a short message), and the channel condition fed back by the receiving device.
  • the channel status may include one or more of a Channel Quality Indication (CQI), a Pre-coding Matrix Indicator (PMI), and a Rank Indication (RI).
  • CQI Channel Quality Indication
  • PMI Pre-coding Matrix Indicator
  • RI Rank Indication
  • the step 201a may include:
  • Step 201aa Determine a TBS index value based on the MCS of the receiving device.
  • Step 201ab Determine the TBS based on the determined TBS index value, the number of RBs allocated to the receiving device, and the number of symbols.
  • the step 201aa may include:
  • the TBS index value corresponding to the index value of the MCS of the receiving device is searched.
  • the TBS index table is used to indicate a correspondence between the MCS index value and the TBS index value.
  • the TBS index table can be as shown in Table 1 below:
  • the MCS index table may include other information, such as the modulation order in Table 1, in addition to the MCS index value and the TBS index value, which is not limited in this application.
  • the TBS index table may no longer include other information.
  • the step 201ab may include:
  • the corresponding TBS is searched according to the number of RBs allocated to the receiving device and the number of symbols.
  • the TBS correspondence table is used to indicate the number of RBs, the number of symbols, and the correspondence between TBSs.
  • the TBS index value is in one-to-one correspondence with the TBS correspondence table.
  • the corresponding TBS correspondence table may be as shown in Table 2 below:
  • Step 202a Generate a TB based on the determined TBS.
  • the step 202a may include:
  • a TB is generated from the acquired data.
  • the embodiment of the present invention determines the TBS based on the MCS of the receiving device, the number of RBs allocated to the receiving device, and the number of symbols included in the RB, and generates a TB based on the determined TBS. Since the number of symbols included in the RB is taken into consideration in determining the TBS, when the number of symbols included in the RB changes, the determined TBS may change accordingly, based on the determined TBS generation.
  • the TB can avoid causing waste of time-frequency resources and poor error correction performance to meet business needs, and is suitable for generating TBs when the number of symbols included in the RB changes.
  • step 201a may be implemented by the processor 332 in the base station shown in FIG. 2 executing the determining module 331b in the memory 331; the above step 202a may be performed by the processor 332 in the base station shown in FIG. 2 to perform the generation in the memory 331.
  • Module 331c is implemented.
  • FIG. 5b is a flowchart of another method for generating a TB according to an exemplary embodiment of the present application.
  • the embodiment shown in Figure 5b differs from the embodiment shown in Figure 5a in that the resource mapping mode employed by the RB can vary.
  • a resource mapping mode is a way of mapping resources to individual channels and individual signals. Different resource mapping modes are adopted for the same resource, and at least one channel or signal in each channel and each signal is mapped to a different resource size.
  • the resource mapping mode adopted by the RB in the TTI 0 includes a downlink control segment, a data segment, a protection segment, and an uplink segment
  • the resource mapping mode adopted by the RB in the TTI 1 includes a data segment, a protection segment, and an uplink segment.
  • the method includes:
  • Step 201b Determine the TBS based on the MCS of the receiving device, the number of RBs allocated to the receiving device, and the number of symbols.
  • the definition and determination method of the number of MCSs, the number of RBs, and the number of symbols may be the same as the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the step 201b may include:
  • Step 201ba Determine a TBS index value based on the MCS of the receiving device.
  • Step 201bb Determine the number of equivalent RBs based on the ratio of the resource mapping mode adopted by each RB to the resource mapping mode transmission data size as a reference.
  • Step 201bc Determine the TBS based on the determined TBS index value, the number of equivalent RBs, and the number of symbols.
  • the number of equivalent RBs is associated with the resource utilization of the RB.
  • the resource utilization of the RB may be a ratio between the number of REs occupied by data in the RB and the number of REs occupied by the RB. In practical applications, the resource utilization of the RB may also be a ratio between the number of REs occupied by the data in the RB and the number of REs in the RB except the number of REs occupied by the data.
  • the TBS correspondence table may be separately established for each resource mapping mode, and the corresponding TBS correspondence table is searched according to the adopted resource mapping mode when determining the TBS, but this will result in a large workload for building the table.
  • a resource mapping mode is selected as a reference to establish a TBS correspondence table.
  • the ratio of the resource mapping mode to the resource mapping mode as the reference is first converted, and then the resource is used as a reference according to the conversion result.
  • the TBS correspondence table corresponding to the mapping mode is used to search for the corresponding TBS, and the TBS can be determined in all resource mapping modes, and the workload of building the table is greatly reduced, and the table lookup is also convenient.
  • the step 201ba may be the same as the step 201aa in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the step 201bb may include:
  • the determined equivalent coefficients of the respective RBs are accumulated, and the value rounded up by the accumulated result and the maximum value among 1 are determined as the number of equivalent RBs.
  • the equivalent coefficient table of the resource mapping mode relative to the resource mapping mode as the reference may be established in advance, and the table may be directly looked up when determining the equivalent coefficient of each RB.
  • the equivalent coefficient table is used to indicate the correspondence between the adopted resource mapping mode and the equivalent coefficient.
  • the table of equivalent coefficients can be as shown in Table 3 below:
  • the number of equivalent RBs can be calculated by the following formula (1):
  • N' RB is the number of equivalent RBs
  • N RB is the number of RBs
  • w i is the equivalent coefficient of each RB.
  • Equation (1) rounding down in equation (1) is to ensure that the number of equivalent RBs does not cause the final determined TBS to be too large and affects the communication quality.
  • the maximum value is compared with 1 in the formula (1) to ensure that the number of equivalent RBs is at least 1.
  • the resource mapping mode as a reference may be arbitrarily selected, which is not limited in this application.
  • the step 201bc may include:
  • TBS correspondence table (similar to Table 2) established for the resource mapping mode as a reference based on the determined TBS index value
  • the corresponding TBS is searched according to the number of equivalent RBs and the number of symbols.
  • Step 202b Generate a TB based on the determined TBS.
  • step 202b may be the same as step 202a in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the mapping mode establishes the TBS correspondence table to find the TBS corresponding to the number of equivalent RBs in all resource mapping modes, which greatly saves the workload of building tables and looking up tables.
  • the TBS is determined based on the TBS index value determined by the MCS of the receiving device, the number of equivalent RBs, and the number of symbols included in the RB, and the number of symbols included in the RB is taken into account in determining the TBS, so the symbols included in the RB are
  • the determined TBS can change accordingly, and the TB generated based on the determined TBS can avoid causing waste of time-frequency resources and poor error correction performance to meet service requirements, and is applicable to the case where the number of symbols included in the RB changes. Generate TB.
  • step 201b may be implemented by the processor 332 in the base station shown in FIG. 2 executing the determining module 331b in the memory 331; the above step 202b may be performed by the processor 332 in the base station shown in FIG. 2 to perform the generation in the memory 331.
  • Module 331c is implemented.
  • FIG. 5c is a flow chart showing still another method for generating a TB according to an exemplary embodiment of the present application.
  • the embodiment shown in Figure 5c differs from the embodiment shown in Figure 5b in that the manner in which the number of equivalent RBs is determined is different.
  • the method includes:
  • Step 201c Determine the TBS based on the MCS of the receiving device, the number of RBs allocated to the receiving device, and the number of symbols.
  • the definition and determination method of the number of MCSs, the number of RBs, and the number of symbols may be the same as the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the step 201c may include:
  • Step 201ca Determine a TBS index value based on the MCS of the receiving device.
  • Step 201cb Determine the number of equivalent RBs based on a ratio of resource mapping patterns adopted by all RBs to resource mapping mode transmission data sizes as a reference.
  • Step 201cc Determine the TBS based on the determined TBS index value, the number of equivalent RBs, and the number of symbols.
  • the step 201ca may be the same as the step 201aa in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • This step 201cc may be the same as step 201bc in the embodiment shown in FIG. 5b, and will not be described in detail herein.
  • the step 201cb may include:
  • the value obtained by rounding down the equivalent coefficient of the resources of all the RBs determined and the maximum value among 1 are determined as the number of equivalent RBs.
  • the number of equivalent RBs can be calculated by the following formula (2):
  • N' RB is the number of equivalent RBs
  • w is the equivalent coefficient of all RBs.
  • the rounding down in the formula (2) is to ensure that the number of equivalent RBs does not cause the final determined TBS to be too large and affects the communication quality.
  • the maximum value is compared with 1 in formula (2) to ensure that the number of equivalent RBs is at least 1.
  • the resource mapping mode as a reference may be arbitrarily selected, which is not limited in this application.
  • Step 202c Generate a TB based on the determined TBS.
  • step 202c may be the same as step 202a in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the mapping mode establishes the TBS correspondence table to find the TBS corresponding to the number of equivalent RBs in all resource mapping modes, which greatly saves the workload of building tables and looking up tables.
  • the TBS is determined based on the TBS index value determined by the MCS of the receiving device, the number of equivalent RBs, and the number of symbols included in the RB, and the number of symbols included in the RB is taken into account in determining the TBS, so the symbols included in the RB are
  • the determined TBS can change accordingly, and the TB generated based on the determined TBS can avoid causing waste of time-frequency resources and poor error correction performance to meet service requirements, and is applicable to the case where the number of symbols included in the RB changes. Generate TB.
  • step 201c may be performed by the processor 332 in the base station shown in FIG. 2 in the memory 331.
  • the determining module 331b is implemented; the above step 202c can be implemented by the processor 332 in the base station shown in FIG. 2 executing the generating module 331c in the memory 331.
  • FIG. 5d is a flow chart showing still another method for generating a TB according to an exemplary embodiment of the present application.
  • the embodiment shown in Figure 5d differs from the embodiment shown in Figure 5a in that spatial multiplexing techniques are used to transmit data to the receiving device, i.e., data transmitted to the receiving device is carried over multiple layers of the same time-frequency resource.
  • the method includes:
  • Step 201d Determine the TBS based on the MCS of the receiving device, the number of RBs allocated to the receiving device, and the number of symbols.
  • the definition and determination method of the number of MCSs, the number of RBs, and the number of symbols may be the same as the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the step 201d may include:
  • Step 201da Determine a TBS index value based on the MCS of the receiving device.
  • Step 201db Determine whether the number of RBs allocated to the receiving device is greater than the RB threshold. When the number of RBs is less than or equal to the RB threshold, step 201dc is performed: when the number of RBs is greater than the RB threshold, step 201dd-step 201de is performed.
  • Step 201dc Determine the TBS based on the determined TBS index value, the product of the number of RBs allocated to the receiving device, and the number of layers of spatial multiplexing, and the number of symbols.
  • Step 201dd Determine the TBS of the first layer based on the determined TBS index value, the number of RBs allocated to the receiving device, and the number of symbols.
  • Step 201de Determine the TBS based on the number of layers of the spatial multiplexing and the TBS of the first layer.
  • the TBS correspondence table is established according to the size of the time-frequency resources that the base station can call.
  • the transmitted data is carried on multiple layers of the same time-frequency resource, and the size of the time-frequency resource allocated to the receiving device after multiplexing may exceed the size of the time-frequency resource that the base station can call.
  • the size of the schedulable resource (100 RBs). Therefore, when the spatial multiplexing technology is adopted, it is first determined whether the resource size allocated by the base station to the receiving device exceeds the size of the time-frequency resource that the base station can call, and the TBS is determined in different manners based on the determination result.
  • the RB threshold may be set according to the number of layers of spatial multiplexing and the bandwidth configured by the base station (the size of the base station callable time-frequency resource in the frequency domain).
  • the bandwidth configured by the base station is equivalent to 100 RBs
  • the number of spatially multiplexed layers is two layers
  • the time-frequency resource allocated to the receiving device is smaller than the time-frequency resource configurable by the base station;
  • the number of RBs to the receiving device is 51, 51>50, that is, the number of RBs allocated to the receiving device is greater than the RB threshold, and the time-frequency resource allocated to the receiving device is greater than the time-frequency resource schedulable by the base station.
  • the base station when the number of RBs allocated to the receiving device is greater than the size of the time-frequency resource that can be called by the base station, the base station cannot implement data transmission, and directly ends, and does not perform TBS determination and TB generation.
  • the step 201da may be the same as the step 201aa in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the step 201dc may include:
  • the corresponding TBS is searched based on the product of the number of RBs allocated to the receiving device and the number of spatially multiplexed layers, and the number of symbols.
  • the step 201dd may include:
  • the corresponding TBS is searched according to the number of RBs allocated to the receiving device and the number of symbols, and the found TBS is used as the TBS of the first layer.
  • the step 201de may include:
  • the corresponding TBS is searched according to the number of layers of spatial multiplexing and the TBS of the first layer.
  • the TBS conversion table is used to indicate the correspondence between the number of layers of spatial multiplexing and the TBS.
  • the number of layers of spatial multiplexing corresponds to the TBS conversion table.
  • the corresponding TBS conversion table can be as shown in Table 4 below:
  • Step 202d Generate a TB based on the determined TBS.
  • step 202d may be the same as step 202a in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the first embodiment determines whether the resource size allocated by the base station to the receiving device exceeds the size of the time-frequency resource that the base station can call, and determines the TBS in different manners based on the judgment result.
  • the problem that the TBS correspondence table cannot be directly used when the resource allocated by the base station to the receiving device exceeds the size of the base station callable time-frequency resource is solved.
  • the number of symbols included in the RB is taken into account. Therefore, when the number of symbols included in the RB changes, the determined TBS can change accordingly, and the TB generated based on the determined TBS can be avoided. Time-frequency resource waste and error correction performance are poor to meet business needs, and it is suitable for generating TB in the case of a change in the number of symbols included in the RB.
  • step 201d may be implemented by the processor 332 in the base station shown in FIG. 2 executing the determining module 331b in the memory 331; the above step 202d may be performed by the processor 332 in the base station shown in FIG. 2 to perform the generation in the memory 331.
  • Module 331c is implemented.
  • FIG. 5e is a flow chart showing still another method for generating a TB according to an exemplary embodiment of the present application.
  • the embodiment shown in Figure 5e differs from the embodiment shown in Figure 5d in that the resource mapping mode employed by the RB can vary.
  • the introduction of the resource mapping mode can be seen in the embodiment shown in FIG. 5b, and will not be described in detail herein.
  • the method includes:
  • Step 201e Determine the TBS based on the MCS of the receiving device, the number of RBs allocated to the receiving device, and the number of symbols.
  • the definition and determination method of the number of MCSs, the number of RBs, and the number of symbols may be the same as the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the step 201e may include:
  • Step 201ea Determine a TBS index value based on the MCS of the receiving device.
  • Step 201eb Determine the number of equivalent RBs based on the ratio of the resource mapping mode adopted by each RB to the resource mapping mode transmission data size as a reference.
  • Step 201ec Determine whether the number of equivalent RBs is greater than an RB threshold. When the number of equivalent RBs is less than or equal to the RB threshold, step 201ed is performed; when the number of equivalent RBs is greater than the RB threshold, step 201ee-step 201ef is performed.
  • Step 201ed Determine the TBS based on the determined TBS index value, the product of the number of equivalent RBs and the number of layers of spatial multiplexing, and the number of symbols.
  • Step 201ee Determine the TBS of the first layer based on the determined TBS index value, the number of equivalent RBs, and the number of symbols.
  • Step 201ef Determine the TBS based on the number of layers of spatial multiplexing and the TBS of the first layer.
  • the step 201ea may be the same as the step 201aa in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • This step 201eb can be the same as step 201bb in the embodiment shown in FIG. 5b, and will not be described in detail herein.
  • the RB threshold can be determined in the manner provided by the embodiment shown in Figure 5d and will not be described in detail herein.
  • This step 201ef can be the same as step 201de in the embodiment shown in FIG. 5d, and will not be described in detail herein.
  • the step 201ed may include:
  • the corresponding TBS is searched for based on the product of the number of equivalent RBs and the number of layers of spatial multiplexing, and the number of symbols.
  • the step 201ee may include:
  • the corresponding TBS is searched according to the number of equivalent RBs and the number of symbols, and the found TBS is used as the TBS of the first layer.
  • Step 202e Generate a TB based on the determined TBS.
  • step 202e may be the same as step 202a in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the mapping mode establishes the TBS correspondence table to find the TBS corresponding to the number of equivalent RBs in all resource mapping modes, which greatly saves the workload of building tables and looking up tables.
  • the TBS is determined in different manners based on the judgment result, and the TBS corresponding is solved.
  • the number of symbols included in the RB is taken into consideration when determining the TBS based on the judgment result in different manners. Therefore, when the number of symbols included in the RB changes, it is determined.
  • the TBS can be changed accordingly.
  • the TB generated based on the determined TBS can avoid causing waste of time-frequency resources and poor error correction performance to meet service requirements, and is suitable for generating TBs when the number of symbols included in the RB changes.
  • step 201e may be implemented by the processor 332 in the base station shown in FIG. 2 executing the determining module 331b in the memory 331; the above step 202e may be performed by the processor 332 in the base station shown in FIG. Module 331c is implemented.
  • FIG. 5f is a flowchart of still another method for generating a TB according to an exemplary embodiment of the present application.
  • the embodiment shown in Fig. 5f differs from the embodiment shown in Fig. 5e in that the manner in which the number of equivalent RBs is determined is different.
  • the method includes:
  • Step 201f Determine the TBS based on the MCS of the receiving device, the number of RBs allocated to the receiving device, and the number of symbols.
  • the definition and determination method of the number of MCSs, the number of RBs, and the number of symbols may be the same as the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the step 201f may include:
  • Step 201fa Determine a TBS index value based on the MCS of the receiving device.
  • Step 201fb Determine the number of equivalent RBs based on a ratio of resource mapping patterns adopted by all RBs to resource mapping mode transmission data sizes as a reference.
  • Step 201fc Determine whether the number of equivalent RBs is greater than an RB threshold. When the number of equivalent RBs is less than or equal to the RB threshold, step 201fd is performed; when the number of equivalent RBs is greater than the RB threshold, step 201fe-step 201ff is performed.
  • Step 201fd Determine the TBS based on the product of the determined TBS index value, the number of equivalent RBs, and the number of layers of spatial multiplexing, and the number of symbols.
  • Step 201fe Determine the TBS of the first layer based on the determined TBS index value, the number of equivalent RBs, and the number of symbols.
  • Step 201ff Determine the TBS based on the number of layers of spatial multiplexing and the TBS of the first layer.
  • the step 201fa may be the same as the step 201aa in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • This step 201fb may be the same as step 201cb in the embodiment shown in FIG. 5c, and will not be described in detail herein.
  • the RB threshold can be determined in the manner provided by the embodiment shown in Figure 5d and will not be described in detail herein.
  • This step 201fd can be the same as step 201ed in the embodiment shown in FIG. 5e, and will not be described in detail herein.
  • This step 201fe may be the same as step 201ee in the embodiment shown in FIG. 5e, and will not be described in detail herein.
  • This step 201ff can be the same as step 201de in the embodiment shown in FIG. 5d, and will not be described in detail herein.
  • Step 202f Generate a TB based on the determined TBS.
  • step 202f may be the same as step 202a in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the mapping mode establishes the TBS correspondence table to find the TBS corresponding to the number of equivalent RBs in all resource mapping modes, which greatly saves the workload of building tables and looking up tables.
  • the TBS is determined in different manners based on the judgment result, and the TBS corresponding is solved.
  • the TBS is determined in a different manner based on the judgment result, and the number of symbols included in the RB is taken into account.
  • the determined TBS may change accordingly, and the TB generated based on the determined TBS may be avoided.
  • the time-frequency resource is wasted and the error correction performance is poor to meet the business needs, and is suitable for generating the TB in the case of a change in the number of symbols included in the RB.
  • step 201f may be implemented by the processor 332 in the base station shown in FIG. 2 executing the determining module 331b in the memory 331; the above step 202f may be performed by the processor 332 in the base station shown in FIG. 2 to generate the memory 331.
  • Module 331c is implemented.
  • FIG. 7a is a flow chart showing still another method for generating a TB according to an exemplary embodiment of the present application.
  • the embodiment shown in Figure 7a differs from the embodiment shown in Figure 5a in that the time-frequency resources allocated to the receiving device comprise one or more TTI units (Unit TTIs).
  • the TTI unit is carried by N sc consecutive subcarriers in the frequency domain and N Symbol consecutive symbols in the time domain, and N sc and N Symbol are positive integers.
  • N sc and N Symbol are fixed values, but the specific values of N sc and N Symbol are not limited in this application.
  • a TTI unit is carried by 12 consecutive subcarriers in the frequency domain and 7 consecutive symbols in the time domain.
  • the number of TTI units carried by the same group of consecutive subcarriers may be any positive integer, and the number of TTI units carried by the same group of consecutive symbols may also be any positive integer.
  • the number of TTI units allocated to the receiving device's time-frequency resources changes accordingly.
  • the method includes:
  • Step 301a Determine the TBS based on the MCS of the receiving device and the number of TTI units allocated to the receiving device.
  • the determination of the MCS and the allocation of the time-frequency resources may be the same as the embodiment shown in FIG. 5a, and will not be described in detail herein. If the time-frequency resource is allocated to the receiving device in units of resource block pairs, the number of TTI units is calculated by the following formula (3):
  • N Unit TTI (N RB ⁇ L Symbol ) / (N sc ⁇ N Symbol ); (3)
  • the N Unit TTI is the number of TTI units
  • the N RB is the number of RBs allocated to the receiving device
  • the L Symbol is the number of symbols included in the RB
  • the N sc is the subcarrier occupied by the TTI unit in the frequency domain.
  • Quantity N Symbol is the number of symbols that the TTI unit occupies in the time domain.
  • the step 301a may include:
  • Step 301aa Determine a TBS index value based on the MCS of the receiving device.
  • Step 301ab Determine the TBS based on the determined TBS index value and the number of TTI units allocated to the receiving device.
  • step 301aa may be the same as step 201aa in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the step 301ab may include:
  • the corresponding TBS is searched according to the determined TBS index value and the number of TTI units allocated to the receiving device.
  • the TBS correspondence table is used to indicate a TBS index value, a number of TTI units, and a correspondence relationship between TBSs.
  • the TBS correspondence table can be as shown in Table 5 below:
  • Step 302a Generate a TB based on the determined TBS.
  • step 302a may be the same as step 202a in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the embodiment of the present invention determines the TBS based on the MCS of the receiving device, the number of TTI units allocated to the receiving device, and generates a TB based on the determined TBS. Since the number of TTI units varies with the length of the TTI, when the TTI length changes, the determined The TBS can be changed accordingly.
  • the TB generated based on the determined TBS can avoid causing waste of time-frequency resources and poor error correction performance to meet service requirements, and is suitable for generating TB in the case of a change in TTI length.
  • step 301a may be implemented by the processor 332 in the base station shown in FIG. 2 executing the determining module 331b in the memory 331; the above step 302a may be performed by the processor 332 in the base station shown in FIG. 2 to perform the generation in the memory 331.
  • Module 331c is implemented.
  • FIG. 7b is a flow chart showing still another method for generating a TB according to an exemplary embodiment of the present application.
  • the embodiment shown in Figure 7b differs from the embodiment shown in Figure 7a in that the resource mapping mode employed by the TTI unit can vary.
  • the introduction of the resource mapping mode can be seen in the embodiment shown in FIG. 5b, and will not be described in detail herein.
  • the method includes:
  • Step 301b Determine the TBS based on the MCS of the receiving device and the number of TTI units allocated to the receiving device.
  • the definition and determination method of the MCS and the TTI unit may be the same as the embodiment shown in FIG. 7a, and will not be described in detail herein.
  • the step 301b may include:
  • Step 301ba Determine a TBS index value based on the MCS of the receiving device.
  • Step 301bb Determine the number of equivalent TTI units based on the ratio of the resource mapping mode adopted by each TTI unit to the resource mapping mode transmission data size as a reference.
  • Step 301bc Determine the TBS based on the determined TBS index value, the number of equivalent TTI units.
  • the number of equivalent TTI units is associated with the resource utilization of the TTI unit.
  • the resource utilization of the TTI unit may be a ratio between the number of REs occupied by data in the TTI unit and the number of REs occupied by the TTI unit. In practical applications, the resource utilization of the TTI unit may also be a ratio between the number of REs occupied by data in the TTI unit and the number of REs in the TTI unit other than the number of REs occupied by the data.
  • a resource mapping mode is selected as a reference to establish a TBS correspondence table.
  • the ratio of the resource mapping mode to the resource mapping mode transmission data size as a reference is first converted. Then, according to the conversion result, the TBS corresponding to the resource mapping mode corresponding to the reference is searched for the corresponding TBS, and the TBS can be determined in all the resource mapping modes, and the workload of the built table is greatly reduced, and the table lookup is also convenient.
  • the step 301ba may be the same as the step 201aa in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the step 301bb may include:
  • the determined equivalent coefficients of the respective TTI units are accumulated, and the value of the rounding down of the accumulated result and the maximum value among 1 are determined as the number of equivalent TTI units.
  • various resource mapping modes are fixed, and the size of the resource mapping mode transmission data is fixed, and the equivalent of the resource mapping mode relative to the resource mapping mode as a reference may be established in advance.
  • the coefficient table can be directly checked when determining the equivalent coefficient of each TTI unit.
  • the equivalent coefficient table is used to indicate the correspondence between the resource mapping mode and the equivalent coefficient adopted by the TTI unit.
  • the table of equivalent coefficients can be as shown in Table 6 below:
  • the number of equivalent TTI units can be calculated by the following formula (4):
  • the N' Unit TTI is the number of equivalent TTI units
  • the N Unit TTI is the number of TTI units
  • w i is the equivalent coefficient of each TTI unit.
  • the rounding down in equation (4) is to ensure that the number of equivalent TTI units does not cause the final determined TBS to be too large and affects the communication quality.
  • the maximum value is compared with 1 in equation (4) to ensure that the number of equivalent TTI units is at least 1.
  • the resource mapping mode as a reference may be arbitrarily selected, which is not limited in this application.
  • the step 301bc may include:
  • the corresponding TBS is searched according to the determined TBS index value and the number of equivalent TTI units.
  • Step 302b Generate a TB based on the determined TBS.
  • step 302b may be the same as step 202a in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the ratio of the resource mapping mode adopted by each TTI unit to the data transmission mode of the resource mapping mode as the reference is determined, and the number of equivalent TTI units is determined.
  • the reference resource mapping mode establishes the TBS correspondence table to find the TBS corresponding to the number of equivalent TTI units in all resource mapping modes, which greatly saves the workload of building tables and looking up tables.
  • the TBS is determined based on the MCS of the receiving device, the number of TTI units allocated to the receiving device, and the TB is generated based on the determined TBS.
  • the determined TBS may follow The change, based on the determined TBS generated TB can avoid causing waste of time-frequency resources and poor error correction performance to meet business needs, suitable for use in TTI TB is generated in the case of a change in length.
  • step 301b may be implemented by the processor 332 in the base station shown in FIG. 2 executing the determining module 331b in the memory 331; the above step 302b may be performed by the processor 332 in the base station shown in FIG. 2 to perform the generation in the memory 331.
  • Module 331c is implemented.
  • FIG. 7c is a flow chart showing still another method for generating a TB according to an exemplary embodiment of the present application.
  • the embodiment shown in Figure 7c differs from the embodiment shown in Figure 7b in that the manner in which the number of equivalent TTI units is determined is different.
  • the method includes:
  • Step 301c Determine the TBS based on the MCS of the receiving device and the number of TTI units allocated to the receiving device.
  • the definition and determination method of the MCS and the TTI unit may be the same as the embodiment shown in FIG. 7a, and will not be described in detail herein.
  • the step 301c may include:
  • Step 301ca Determine a TBS index value based on the MCS of the receiving device.
  • Step 301cb Determine the number of equivalent TTI units based on the ratio of the resource mapping mode adopted by all TTI units to the resource mapping mode transmission data size as a reference.
  • Step 301cc Determine the TBS based on the determined TBS index value, the number of equivalent TTI units.
  • the step 301ca may be the same as the step 201aa in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • This step 301cc may be the same as step 301bc in the embodiment shown in FIG. 7b, and will not be described in detail herein.
  • the step 301cb may include:
  • the value rounded down to the determined equivalent coefficient of all TTI units and the maximum value among 1 are determined as the number of equivalent TTI units.
  • the number of equivalent TTI units can be calculated by the following formula (5):
  • N' Unit TTI is the number of equivalent TTI units
  • w is the equivalent coefficient of all TTI units.
  • the rounding down in the formula (5) is to ensure that the number of equivalent TTI units does not cause the final determined TBS to be too large and affects the communication quality.
  • the maximum value is compared with 1 in equation (5) to ensure that the number of equivalent TTI units is at least 1.
  • the resource mapping mode as a reference may be arbitrarily selected, which is not limited in this application.
  • Step 302c Generate a TB based on the determined TBS.
  • step 302c may be the same as step 202a in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the ratio of the resource mapping mode adopted by all the TTI units to the resource mapping mode of the reference resource mapping mode is determined, and the number of equivalent TTI units is determined.
  • the reference resource mapping mode establishes the TBS correspondence table to find the TBS corresponding to the number of equivalent TTI units in all resource mapping modes, which greatly saves the workload of building tables and looking up tables.
  • the TBS is determined based on the MCS of the receiving device, the number of TTI units allocated to the receiving device, and the TB is generated based on the determined TBS.
  • the determined TBS may follow The change, based on the determined TBS generated TB can avoid causing waste of time-frequency resources and poor error correction performance to meet business needs, and is suitable for generating TB in the case of a change in TTI length.
  • step 301c may be implemented by the processor 332 in the base station shown in FIG. 2 executing the determining module 331b in the memory 331; the above step 302c may be performed by the processor 332 in the base station shown in FIG. 2 to perform the generation in the memory 331.
  • Module 331c is implemented.
  • FIG. 7d is a flow chart showing still another method for generating a TB according to an exemplary embodiment of the present application.
  • the embodiment shown in Figure 7d differs from the embodiment shown in Figure 7a in that spatial multiplexing techniques are used to transmit data to the receiving device, i.e., the data transmitted to the receiving device is carried over multiple layers of the same time-frequency resource.
  • the method includes:
  • Step 301d Determine the TBS based on the MCS of the receiving device and the number of TTI units allocated to the receiving device.
  • the definition and determination method of the MCS and the TTI unit may be the same as the embodiment shown in FIG. 7a, and will not be described in detail herein.
  • the step 301d may include:
  • Step 301da Determine a TBS index value based on the MCS of the receiving device.
  • Step 301db Determine whether the number of TTI units allocated to the receiving device is greater than a TTI threshold. When the number of TTI units is less than or equal to the TTI unit threshold, step 301dc is performed; when the number of TTI units is greater than the TTI threshold, step 301dd-step 301de is performed.
  • Step 301dc Determine the TBS based on the determined TBS index value, the product of the number of TTI units allocated to the receiving device, and the number of layers of spatial multiplexing.
  • Step 301dd Determine the TBS of the first layer based on the determined TBS index value and the number of TTI units allocated to the receiving device.
  • Step 301de Determine the TBS based on the number of layers of the spatial multiplexing and the TBS of the first layer.
  • the TBS correspondence table is established according to the size of the base station callable time-frequency resource.
  • the transmitted data is carried on multiple layers of the same time-frequency resource, and the size of the time-frequency resource allocated to the receiving device after spatial multiplexing may exceed the size of the base station callable time-frequency resource.
  • the spatial multiplexing technology it is first determined whether the resource size allocated by the base station to the receiving device exceeds the size of the time-frequency resource that the base station can call, and the TBS is determined in different manners based on the determination result.
  • the TTI unit threshold may be set according to the number of layers of spatial multiplexing and the size of the base station callable time-frequency resource.
  • the base station cannot implement data transmission, and directly ends, and does not perform TBS determination and TB generation.
  • the step 301da may be the same as the step 201aa in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • This step 301de may be the same as step 201de in the embodiment shown in FIG. 5d, and will not be described in detail herein.
  • the step 301dc may include:
  • the corresponding TBS is searched for based on the determined TBS index value, the product of the number of TTI units allocated to the receiving device, and the number of spatially multiplexed layers.
  • the step 301dd may include:
  • the corresponding TBS is searched according to the determined TBS index value and the number of TTI units allocated to the receiving device, and the found TBS is used as the TBS of the first layer.
  • Step 302d Generate a TB based on the determined TBS.
  • step 302d may be the same as step 202a in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the TBS is determined to solve the problem that the TBS correspondence table cannot be directly used when the resource allocated by the base station to the receiving device exceeds the size of the base station callable time-frequency resource.
  • the TBS is determined based on the MCS of the receiving device, the number of TTI units allocated to the receiving device, and the TB is generated based on the determined TBS.
  • the determined TBS may follow The change, based on the determined TBS generated TB can avoid causing waste of time-frequency resources and poor error correction performance to meet business needs, and is suitable for generating TB in the case of a change in TTI length.
  • step 301d may be implemented by the processor 332 in the base station shown in FIG. 2 executing the determining module 331b in the memory 331; the above step 302d may be performed by the processor 332 in the base station shown in FIG. Module 331c is implemented.
  • FIG. 7e is a flowchart of still another method for generating a TB according to an exemplary embodiment of the present application.
  • the embodiment shown in Figure 7e differs from the embodiment shown in Figure 7d in that the resource mapping mode employed by the TTI unit can vary.
  • the introduction of the resource mapping mode can be seen in the embodiment shown in FIG. 5b, and will not be described in detail herein.
  • the method includes:
  • Step 301e Determine the TBS based on the MCS of the receiving device and the number of TTI units allocated to the receiving device.
  • the definition and determination method of the MCS and the TTI unit may be the same as the embodiment shown in FIG. 7a, and will not be described in detail herein.
  • the step 301e may include:
  • Step 301ea Determine a TBS index value based on the MCS of the receiving device.
  • Step 301eb Determine the number of equivalent TTI units based on the ratio of the resource mapping mode adopted by each TTI unit to the resource mapping mode transmission data size as a reference.
  • Step 301ec Determine whether the number of equivalent TTI units is greater than a TTI threshold. When the number of equivalent TTI units is less than or equal to the TTI unit threshold, step 301ed is performed; when the number of equivalent TTI units is greater than the TTI unit threshold, step 301ee-step 301ef is performed.
  • Step 301ed Determine the TBS based on the product of the determined TBS index value, the number of equivalent TTI units, and the number of layers of spatial multiplexing.
  • Step 301ee Determine the TBS of the first layer based on the determined TBS index value and the number of equivalent TTI units.
  • Step 301ef Determine the TBS based on the number of layers of the spatial multiplexing and the TBS of the first layer.
  • the step 301ea may be the same as the step 201aa in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • This step 301eb can be the same as step 301bb in the embodiment shown in FIG. 7b, and will not be described in detail herein.
  • the TTI cell threshold can be determined in the manner provided by the embodiment shown in Figure 7d and will not be described in detail herein.
  • This step 301ef can be the same as step 301de in the embodiment shown in FIG. 7d, and will not be described in detail herein.
  • the step 301ed may include:
  • the corresponding TBS is searched for based on the determined TBS index value, the number of equivalent TTI units, and the number of spatially multiplexed layers.
  • the step 301ee may include:
  • the corresponding TBS is searched according to the determined TBS index value, the number of equivalent TTI units, and the number of spatially multiplexed layers, and the found TBS is used as the TBS of the first layer.
  • Step 302e Generate a TB based on the determined TBS.
  • step 302e may be the same as step 202a in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the embodiment of the present invention is directed to the change of the resource mapping mode adopted by the TTI unit, and is adopted based on each TTI unit.
  • the ratio of the resource mapping mode to the resource mapping mode transmission data size as the reference determine the number of equivalent TTI units, and only need to establish a TBS correspondence table for the resource mapping mode as the reference to find the equivalent TTI in all resource mapping modes.
  • the number of units corresponds to the TBS, which greatly saves the workload of building tables and looking up tables.
  • the TBS is determined in different manners based on the judgment result, and the TBS corresponding is solved.
  • the TBS is determined based on the MCS of the receiving device, the number of TTI units allocated to the receiving device, and the TB is generated based on the determined TBS.
  • the determined TBS may As a result, the TB generated based on the determined TBS can avoid causing waste of time-frequency resources and poor error correction performance to meet service requirements, and is suitable for generating TB in the case of a change in TTI length.
  • step 301e may be implemented by the processor 332 in the base station shown in FIG. 2 executing the determining module 331b in the memory 331; the above step 302e may be performed by the processor 332 in the base station shown in FIG. Module 331c is implemented.
  • FIG. 7f is a flowchart of still another method for generating a TB according to an exemplary embodiment of the present application.
  • the embodiment shown in Figure 7f differs from the embodiment shown in Figure 7e in that the manner in which the number of equivalent TTI units is determined is different.
  • the method includes:
  • Step 301f Determine the TBS based on the MCS of the receiving device and the number of TTI units allocated to the receiving device.
  • the definition and determination method of the MCS and the TTI unit may be the same as the embodiment shown in FIG. 7a, and will not be described in detail herein.
  • the step 301f may include:
  • Step 301fa Determine a TBS index value based on the MCS of the receiving device.
  • Step 301fb Determine the number of equivalent TTI units based on a ratio of resource mapping patterns adopted by all TTI units to resource mapping mode transmission data sizes as a reference.
  • Step 301fc Determine whether the number of equivalent TTI units is greater than a TTI threshold. When the number of equivalent TTI units is less than or equal to the TTI unit threshold, step 301fd is performed; when the number of equivalent TTI units is greater than the TTI unit threshold, step 301fe-step 301ff is performed.
  • Step 301fd Determine the TBS based on the product of the determined TBS index value, the number of equivalent TTI units, and the number of layers of spatial multiplexing.
  • Step 301fe Determine the TBS of the first layer based on the determined TBS index value and the number of equivalent TTI units.
  • Step 301ff Determine the TBS based on the number of layers of spatial multiplexing and the TBS of the first layer.
  • the step 301fa may be the same as the step 201aa in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • This step 301fb may be the same as step 301cb in the embodiment shown in FIG. 7c, and will not be described in detail herein.
  • the TTI cell threshold can be determined in the manner provided by the embodiment shown in Figure 7d and will not be described in detail herein.
  • This step 301fd may be the same as step 301ed in the embodiment shown in FIG. 7e, and will not be described in detail herein.
  • This step 301fe may be the same as step 301ee in the embodiment shown in FIG. 7e, and will not be described in detail herein.
  • This step 301ff can be the same as step 301de in the embodiment shown in FIG. 7d, and will not be described in detail herein.
  • Step 302f Generate a TB based on the determined TBS.
  • step 302f may be the same as step 202a in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the embodiment of the present invention is directed to the case where the resource mapping mode adopted by the TTI unit changes, and is adopted based on all TTI units.
  • the ratio of the resource mapping mode to the resource mapping mode transmission data size as the reference determine the number of equivalent TTI units, and only need to establish a TBS correspondence table for the resource mapping mode as the reference to find the equivalent TTI in all resource mapping modes.
  • the number of units corresponds to the TBS, which greatly saves the workload of building tables and looking up tables.
  • the TBS is determined in different manners based on the judgment result, and the TBS corresponding is solved.
  • the TBS is determined based on the MCS of the receiving device, the number of TTI units allocated to the receiving device, and the TB is generated based on the determined TBS.
  • the determined TBS may As a result, the TB generated based on the determined TBS can avoid causing waste of time-frequency resources and poor error correction performance to meet service requirements, and is suitable for generating TB in the case of a change in TTI length.
  • step 301f may be implemented by the processor 332 in the base station shown in FIG. 2 executing the determining module 331b in the memory 331; the above step 302f may be performed by the processor 332 in the base station shown in FIG. 2 to perform the generation in the memory 331.
  • Module 331c is implemented.
  • FIG. 8a is a flow chart showing still another method for generating a TB according to an exemplary embodiment of the present application.
  • the embodiment shown in Figure 8a differs from the embodiment shown in Figure 5a in that the time-frequency resources allocated to the receiving device comprise one or more symbol units (Symbol symbols).
  • the symbol unit is carried by N sc consecutive subcarriers in the frequency domain and N Symbol consecutive symbols in the time domain, and N sc and N Symbol are positive integers.
  • N sc and N Symbol are fixed values, but the specific values of N sc and N Symbol are not limited in this application.
  • a symbol unit is carried by 12 consecutive subcarriers in the frequency domain and 1 symbol in the time domain.
  • the number of symbol units carried by the same group of consecutive sub-carriers may be any positive integer, and the number of symbol units carried by the same group of consecutive symbols may also be any positive integer.
  • the symbol length changes, the number of symbol units of the time-frequency resource allocated to the receiving device changes accordingly.
  • the method includes:
  • Step 401a Determine the TBS based on the MCS of the receiving device and the number of symbol units allocated to the receiving device.
  • the determination of the MCS and the allocation of the time-frequency resources may be the same as the embodiment shown in FIG. 5a, and will not be described in detail herein. If the time-frequency resource is allocated to the receiving device in units of resource blocks, the number of symbol units is calculated using the following formula (6):
  • N Unit Symbol (N RB ⁇ L Symbol ) / (N sc ⁇ N Symbol ); (6)
  • N Unit Symbol is the number of symbol units
  • N RB is the number of RBs allocated to the receiving device
  • L Symbol is the number of symbols included in the RB
  • N sc is the subcarrier occupied by the symbol unit in the frequency domain.
  • Quantity N Symbol is the number of symbols that the symbol unit occupies in the time domain.
  • the step 401a may include:
  • Step 401aa Determine a TBS index value based on the MCS of the receiving device.
  • Step 401ab Determine the TBS based on the determined TBS index value and the number of symbol units allocated to the receiving device.
  • step 401aa may be the same as step 201aa in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the step 401ab may include:
  • the corresponding TBS is searched according to the determined TBS index value and the number of symbol units allocated to the receiving device.
  • the TBS correspondence table is used to indicate a TBS index value, a number of symbol units, and a correspondence relationship between TBSs.
  • the TBS correspondence table can be as shown in Table 7 below:
  • Step 402a Generate a TB based on the determined TBS.
  • step 402a may be the same as step 202a in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the embodiment of the present invention determines the TBS based on the MCS of the receiving device, the number of symbol units allocated to the receiving device, and generates a TB based on the determined TBS. Since the number of symbol units varies with the change of the symbol length, when the symbol length changes, the determined The TBS can be changed accordingly.
  • the TB generated based on the determined TBS can avoid causing waste of time-frequency resources and poor error correction performance to meet service requirements, and is suitable for generating TB in the case of a change in symbol length.
  • step 401a may be implemented by the processor 332 in the base station shown in FIG. 2 executing the determining module 331b in the memory 331; the above step 402a may be performed by the processor 332 in the base station shown in FIG. 2 to perform the generation in the memory 331.
  • Module 331c is implemented.
  • FIG. 8b is a flowchart of still another method for generating a TB according to an exemplary embodiment of the present application.
  • the embodiment shown in Figure 8b differs from the embodiment shown in Figure 8a in that the resource mapping mode employed by the symbol unit can vary.
  • the introduction of the resource mapping mode can be seen in the embodiment shown in FIG. 5b, and will not be described in detail herein.
  • the method includes:
  • Step 401b Determine the TBS based on the MCS of the receiving device and the number of symbol units allocated to the receiving device.
  • the definition and determination method of the MCS and the symbol unit may be the same as the embodiment shown in FIG. 8a, and will not be described in detail herein.
  • the step 401b may include:
  • Step 401ba Determine a TBS index value based on the MCS of the receiving device.
  • Step 401bb Determine the number of equivalent symbol units based on a ratio of a resource mapping pattern adopted by each symbol unit to a resource mapping mode transmission data size as a reference.
  • Step 401bc Determine the TBS based on the determined TBS index value and the number of equivalent symbol units.
  • the number of equivalent symbol units is associated with the resource utilization of the symbol unit.
  • the resource utilization of the symbol unit may be the ratio between the number of REs occupied by data in the symbol unit and the number of REs occupied by the symbol unit. In practical applications, the resource utilization of the symbol unit may also be a ratio between the number of REs occupied by data in the symbol unit and the number of REs in the symbol unit other than the number of REs occupied by the data.
  • a resource mapping mode is selected as a reference to establish a TBS correspondence table, and when determining the TBS, the ratio of the resource mapping mode used to the resource mapping mode as the reference is converted. According to the conversion result, the TBS corresponding to the resource mapping mode corresponding to the reference is searched for the corresponding TBS, and the TBS can be determined in all resource mapping modes, and the workload of the table construction is greatly reduced, and the table lookup is also convenient.
  • the step 401ba may be the same as the step 201aa in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the step 401bb may include:
  • the determined equivalent coefficients of the respective symbol units are accumulated, and the value rounded up by the accumulated result and the maximum value among 1 are determined as the number of equivalent symbol units.
  • various resource mapping modes are fixed, and the size of the resource mapping mode transmission data is fixed, and the equivalent of the resource mapping mode relative to the resource mapping mode as a reference may be established in advance.
  • the coefficient table can be directly checked when determining the equivalent coefficient of each symbol unit.
  • the equivalent coefficient table is used to indicate the correspondence between the resource mapping mode and the equivalent coefficient adopted by the symbol unit.
  • the table of equivalent coefficients can be as shown in Table 8 below:
  • the number of equivalent symbol units can be calculated by the following formula (7):
  • N' Unit Symbol is the number of equivalent symbol units
  • N Unit Symbol is the number of symbol units
  • w i is the equivalent coefficient of each symbol unit.
  • the resource mapping mode as a reference may be arbitrarily selected, which is not limited in this application.
  • the step 401bc may include:
  • the corresponding TBS is searched based on the determined TBS index value and the number of equivalent symbol units.
  • Step 402b Generate a TB based on the determined TBS.
  • step 402b may be the same as step 202a in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the number of equivalent symbol units is determined based on the ratio of the resource mapping mode adopted by each symbol unit to the resource mapping mode used as the reference, and only needs to be targeted.
  • the reference resource mapping mode establishes the TBS correspondence table to find the TBS corresponding to the number of equivalent symbol units in all resource mapping modes, which greatly saves the workload of building tables and looking up tables.
  • the TBS is determined based on the MCS of the receiving device, the number of symbol units allocated to the receiving device, and the TB is generated based on the determined TBS.
  • the determined TBS can follow The change, based on the determined TBS generated TB can avoid causing waste of time-frequency resources and poor error correction performance to meet business needs, and is suitable for generating TB in the case of symbol length change.
  • step 401b may be implemented by the processor 332 in the base station shown in FIG. 2 executing the determining module 331b in the memory 331; the above step 402b may be performed by the processor 332 in the base station shown in FIG. 2 to perform the generation in the memory 331.
  • Module 331c is implemented.
  • FIG. 8c is a flow chart showing still another method for generating a TB according to an exemplary embodiment of the present application.
  • the embodiment shown in Fig. 8c differs from the embodiment shown in Fig. 8b in that the manner in which the number of equivalent symbol units is determined is different.
  • the method includes:
  • Step 401c Determine the TBS based on the MCS of the receiving device and the number of symbol units allocated to the receiving device.
  • the definition and determination method of the MCS and the symbol unit may be the same as the embodiment shown in FIG. 8a, and will not be described in detail herein.
  • the step 401c may include:
  • Step 401ca Determine a TBS index value based on the MCS of the receiving device.
  • Step 401cb Determine the number of equivalent symbol units based on a ratio of a resource mapping pattern adopted by all symbol units to a resource mapping mode transmission data size as a reference.
  • Step 401cc Determine the TBS based on the determined TBS index value and the number of equivalent symbol units.
  • the step 401ca may be the same as the step 201aa in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • This step 401cc may be the same as step 401bc in the embodiment shown in FIG. 8b, and will not be described in detail herein.
  • the step 401cb may include:
  • the value rounded down to the equivalent coefficient of all the symbol units determined and the maximum value among 1 are determined as the number of equivalent symbol units.
  • the number of equivalent symbol units can be calculated by the following formula (8):
  • N' Unit Symbol is the number of equivalent symbol units, and w is the equivalent coefficient of all symbol units.
  • the rounding down in the formula (8) is to ensure that the number of equivalent symbol units does not cause the final determined TBS to be too large and affects the communication quality.
  • the formula (8) is the largest compared with 1 The value is to ensure that the number of equivalent symbol units is at least 1.
  • the resource mapping mode as a reference may be arbitrarily selected, which is not limited in this application.
  • Step 402c Generate a TB based on the determined TBS.
  • step 402c may be the same as step 202a in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the ratio of the resource mapping mode adopted by all the symbol units to the resource mapping mode of the reference resource mapping mode is determined, and the number of equivalent symbol units is determined.
  • the reference resource mapping mode establishes the TBS correspondence table to find the TBS corresponding to the number of equivalent symbol units in all resource mapping modes, which greatly saves the workload of building tables and looking up tables.
  • the TBS is determined based on the MCS of the receiving device, the number of symbol units allocated to the receiving device, and the TB is generated based on the determined TBS.
  • the determined TBS can follow The change, based on the determined TBS generated TB can avoid causing waste of time-frequency resources and poor error correction performance to meet business needs, and is suitable for generating TB in the case of symbol length change.
  • step 401c may be implemented by the processor 332 in the base station shown in FIG. 2 executing the determining module 331b in the memory 331; the above step 402c may be performed by the processor 332 in the base station shown in FIG. 2 to perform the generation in the memory 331.
  • Module 331c is implemented.
  • FIG. 8d is a flow chart showing still another method for generating a TB according to an exemplary embodiment of the present application.
  • the embodiment shown in Figure 8d differs from the embodiment shown in Figure 8a in that spatial multiplexing techniques are used to transmit data to the receiving device, i.e., the data transmitted to the receiving device is carried over multiple layers of the same time-frequency resource.
  • the method includes:
  • Step 401d Determine the TBS based on the MCS of the receiving device and the number of symbol units allocated to the receiving device.
  • the definition and determination method of the MCS and the symbol unit may be the same as the embodiment shown in FIG. 8a, and will not be described in detail herein.
  • the step 401d may include:
  • Step 401da Determine a TBS index value based on the MCS of the receiving device.
  • Step 401db Determine whether the number of symbol units allocated to the receiving device is greater than a symbol threshold. When the number of symbol units is less than or equal to the symbol unit threshold, step 401dc is performed; when the number of symbol units is greater than the symbol threshold, step 401dd-step 401de is performed.
  • Step 401dc Determine the TBS based on the determined TBS index value, the product of the number of symbol units allocated to the receiving device, and the number of layers of spatial multiplexing.
  • Step 401dd Determine the TBS of the first layer based on the determined TBS index value and the number of symbol units allocated to the receiving device.
  • Step 401de Determine the TBS based on the number of layers of spatial multiplexing and the TBS of the first layer.
  • the TBS correspondence table is established according to the size of the base station callable time-frequency resource.
  • the transmitted data is carried on multiple layers of the same time-frequency resource, and the size of the time-frequency resource allocated to the receiving device after spatial multiplexing may exceed the size of the base station callable time-frequency resource.
  • the spatial multiplexing technology it is first determined whether the resource size allocated by the base station to the receiving device exceeds the size of the time-frequency resource that the base station can call, and the TBS is determined in different manners based on the determination result.
  • the symbol unit threshold may be set according to the number of layers of spatial multiplexing and the size of the base station callable time-frequency resource.
  • the base station cannot implement data transmission, and directly ends, and does not perform TBS determination and TB generation.
  • the step 401da may be the same as the step 201aa in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • This step 401de may be the same as step 201de in the embodiment shown in FIG. 5d, and will not be described in detail herein.
  • the step 401dc can include:
  • the corresponding TBS is searched for based on the determined TBS index value, the product of the number of symbol units allocated to the receiving device, and the number of spatially multiplexed layers.
  • the step 401dd may include:
  • the corresponding TBS is searched according to the determined TBS index value, the number of symbol units allocated to the receiving device, and the found TBS is used as the TBS of the first layer.
  • Step 402d Generate a TB based on the determined TBS.
  • step 402d may be the same as step 202a in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the first embodiment determines whether the resource size allocated by the base station to the receiving device exceeds the size of the time-frequency resource that the base station can call, and determines the TBS in different manners based on the judgment result.
  • the problem that the TBS correspondence table cannot be directly used when the resource allocated by the base station to the receiving device exceeds the size of the base station callable time-frequency resource is solved.
  • the TBS is determined based on the MCS of the receiving device, the number of symbol units allocated to the receiving device, and the TB is generated based on the determined TBS.
  • the determined TBS can follow The change, based on the determined TBS generated TB can avoid causing waste of time-frequency resources and poor error correction performance to meet business needs, and is suitable for generating TB in the case of symbol length change.
  • step 401d may be implemented by the processor 332 in the base station shown in FIG. 2 executing the determining module 331b in the memory 331; the above step 402d may be performed by the processor 332 in the base station shown in FIG. Module 331c is implemented.
  • FIG. 8e is a flow chart showing still another method for generating a TB according to an exemplary embodiment of the present application.
  • the embodiment shown in Figure 8e differs from the embodiment shown in Figure 8d in that the resource mapping mode employed by the symbol unit can vary.
  • the introduction of the resource mapping mode can be seen in the embodiment shown in FIG. 5b, and will not be described in detail herein.
  • the method includes:
  • Step 401e Determine the TBS based on the MCS of the receiving device and the number of symbol units allocated to the receiving device.
  • the definition and determination method of the MCS and the symbol unit may be the same as the embodiment shown in FIG. 8a, and will not be described in detail herein.
  • the step 401e may include:
  • Step 401ea Determine a TBS index value based on the MCS of the receiving device.
  • Step 401eb Determine the number of equivalent symbol units based on the ratio of the resource mapping mode adopted by each symbol unit to the resource mapping mode transmission data size as a reference.
  • Step 401ec Determine whether the number of equivalent symbol units is greater than the symbol unit threshold. When the number of equivalent symbol units is less than or equal to the symbol unit threshold, step 401ed is performed; when the number of equivalent symbol units is greater than the symbol unit threshold, step 401ee-step 401ef is performed.
  • Step 401ed Determine the TBS based on the product of the determined TBS index value, the number of equivalent symbol units, and the number of layers of spatial multiplexing.
  • Step 401ee Determine the TBS of the first layer based on the determined TBS index value and the number of equivalent symbol units.
  • Step 401ef Determine the TBS based on the number of layers of spatial multiplexing and the TBS of the first layer.
  • the step 401ea may be the same as the step 201aa in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • This step 401eb may be the same as step 401bb in the embodiment shown in FIG. 8b, and will not be described in detail herein.
  • the symbol unit threshold can be determined in the manner provided by the embodiment shown in Figure 8d and will not be described in detail herein.
  • This step 401ef can be the same as step 401de in the embodiment shown in FIG. 8d, and will not be described in detail herein.
  • the step 401ed may include:
  • the corresponding TBS is searched for based on the product of the determined TBS index value, the number of equivalent symbol units, and the number of spatially multiplexed layers.
  • the step 401ee may include:
  • the corresponding TBS is searched according to the determined product of the TBS index value, the number of equivalent symbol units, and the number of spatially multiplexed layers, and the found TBS is used as the TBS of the first layer.
  • Step 402e Generate a TB based on the determined TBS.
  • step 402e may be the same as step 202a in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the number of equivalent symbol units is determined based on the ratio of the resource mapping mode adopted by each symbol unit to the resource mapping mode used as the reference, and only needs to be targeted.
  • the reference resource mapping mode establishes the TBS correspondence table to find the TBS corresponding to the number of equivalent symbol units in all resource mapping modes, which greatly saves the workload of building tables and looking up tables.
  • the TBS is determined in different manners based on the judgment result, and the TBS corresponding is solved.
  • the TBS is determined based on the MCS of the receiving device, the number of symbol units allocated to the receiving device, and the TB is generated based on the determined TBS.
  • the determined TBS may As a result, the TB generated based on the determined TBS can avoid causing waste of time-frequency resources and poor error correction performance to meet service requirements, and is suitable for generating TB in the case of a change in symbol length.
  • step 401e may be implemented by the processor 332 in the base station shown in FIG. 2 executing the determining module 331b in the memory 331; the above step 402e may be performed by the processor 332 in the base station shown in FIG. Module 331c is implemented.
  • FIG. 8f is a flowchart of still another method for generating a TB according to an exemplary embodiment of the present application.
  • the embodiment shown in Fig. 8f differs from the embodiment shown in Fig. 8e in that the manner in which the number of equivalent symbol units is determined is different.
  • the method includes:
  • Step 401f Determine the TBS based on the MCS of the receiving device and the number of symbol units allocated to the receiving device.
  • the definition and determination method of the MCS and the symbol unit may be the same as the embodiment shown in FIG. 8a, and will not be described in detail herein.
  • the step 401f may include:
  • Step 401fa Determine a TBS index value based on the MCS of the receiving device.
  • Step 401fb Determine the number of equivalent symbol units based on a ratio of a resource mapping pattern adopted by all symbol units to a resource mapping mode transmission data size as a reference.
  • Step 401fc Determine whether the number of equivalent symbol units is greater than the symbol unit threshold. When the number of equivalent symbol units is less than or equal to the symbol unit threshold, step 401fd is performed; when the number of equivalent symbol units is greater than the symbol unit threshold, step 401fe-step 401ff is performed.
  • Step 401fd based on the determined TBS index value, the number of equivalent symbol units, and the number of spatially multiplexed layers Set TBS.
  • Step 401fe Determine the TBS of the first layer based on the determined TBS index value and the number of equivalent symbol units.
  • Step 401ff Determine the TBS based on the number of layers of spatial multiplexing and the TBS of the first layer.
  • the step 401fa may be the same as step 201aa in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • This step 401fb may be the same as step 401cb in the embodiment shown in FIG. 8c, and will not be described in detail herein.
  • the symbol unit threshold can be determined in the manner provided by the embodiment shown in Figure 8d and will not be described in detail herein.
  • This step 401fd may be the same as step 301ed in the embodiment shown in FIG. 8e, and will not be described in detail herein.
  • This step 401fe may be the same as step 301ee in the embodiment shown in FIG. 8e, and will not be described in detail herein.
  • This step 401ff can be the same as step 301de in the embodiment shown in FIG. 8d, and will not be described in detail herein.
  • Step 402f Generate a TB based on the determined TBS.
  • step 402f may be the same as step 202a in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the ratio of the resource mapping mode adopted by all the symbol units to the resource mapping mode of the reference resource mapping mode is determined, and the number of equivalent symbol units is determined.
  • the reference resource mapping mode establishes the TBS correspondence table to find the TBS corresponding to the number of equivalent symbol units in all resource mapping modes, which greatly saves the workload of building tables and looking up tables.
  • it is first determined whether the resource size allocated by the base station to the receiving device exceeds the size of the time-frequency resource that the base station can call, and the TBS is determined in different manners based on the judgment result, and the TBS corresponding is solved.
  • the TBS is determined based on the MCS of the receiving device, the number of symbol units allocated to the receiving device, and the TB is generated based on the determined TBS. Since the number of symbol units varies with the change of the symbol length, when the symbol length changes, the determined TBS may As a result, the TB generated based on the determined TBS can avoid causing waste of time-frequency resources and poor error correction performance to meet service requirements, and is suitable for generating TB in the case of a change in symbol length.
  • step 401f may be implemented by the processor 332 in the base station shown in FIG. 2 executing the determining module 331b in the memory 331; the above step 402f may be performed by the processor 332 in the base station shown in FIG. Module 331c is implemented.
  • FIG. 9a is a flow chart showing still another method for generating a TB according to an exemplary embodiment of the present application.
  • the embodiment shown in Figure 9a differs from the embodiment shown in Figure 5a in that the time-frequency resources allocated to the receiving device comprise one or more REs.
  • the method includes:
  • Step 501a Determine the TBS based on the MCS of the receiving device and the number of REs allocated to the receiving device.
  • the determination of the MCS and the allocation of the time-frequency resources may be the same as the embodiment shown in FIG. 5a, and will not be described in detail herein. If the time-frequency resource is allocated to the receiving device in units of resource blocks, the number of TTI units is calculated using the following formula (9):
  • N RE N RB ⁇ L Symbol ; (9)
  • N RE is the number of REs
  • N RB is the number of RBs allocated to the time-frequency resources of the receiving device
  • L Symbol is the number of symbols included in the RB.
  • the step 501a may include:
  • Step 501aa Determine a TBS index value based on the MCS of the receiving device.
  • Step 501ab Determine the TBS based on the determined TBS index value and the number of REs allocated to the receiving device.
  • step 501aa may be the same as step 201aa in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the step 501ab may include:
  • the corresponding TBS is searched according to the determined TBS index value and the number of REs allocated to the receiving device.
  • the TBS correspondence table is used to indicate a TBS index value, a number of REs, and a correspondence relationship between TBSs.
  • the TBS correspondence table can be as shown in Table 9 below:
  • Step 502a Generate a TB based on the determined TBS.
  • step 502a may be the same as step 202a in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the embodiment of the present invention determines the TBS based on the MCS of the receiving device, the number of REs allocated to the receiving device, and generates a TB based on the determined TBS. Since the number of REs varies with the length of the TTI, when the TTI length changes, the determined TBS may As a result, the TB generated based on the determined TBS can avoid causing waste of time-frequency resources and poor error correction performance to meet service requirements, and is suitable for generating TB in the case of a change in TTI length.
  • step 501a may be implemented by the processor 332 in the base station shown in FIG. 2 executing the determining module 331b in the memory 331; the above step 502a may be performed by the processor 332 in the base station shown in FIG. 2 to perform the generation in the memory 331.
  • Module 331c is implemented.
  • FIG. 9b is a flowchart of still another method for generating a TB according to an exemplary embodiment of the present application.
  • the embodiment shown in Figure 9b differs from the embodiment shown in Figure 9a in that spatial multiplexing techniques are used to transmit data to the receiving device, i.e., the data transmitted to the receiving device is carried over multiple layers of the same time-frequency resource.
  • the method includes:
  • Step 501b Determine the TBS based on the MCS of the receiving device and the number of REs allocated to the receiving device.
  • the definition and determination method of the MCS and the RE may be the same as the embodiment shown in FIG. 9a, and will not be described in detail herein.
  • the step 501b may include:
  • Step 501ba Determine a TBS index value based on the MCS of the receiving device.
  • Step 501bb Determine whether the number of REs allocated to the receiving device is greater than an RE threshold. When the number of REs is less than or equal to the RE threshold, step 501bc is performed; when the number of REs is greater than the RE threshold, step 501bd-step 501be is performed.
  • Step 501bc Determine the TBS based on the determined TBS index value, the product of the number of REs allocated to the receiving device, and the number of layers of spatial multiplexing.
  • Step 501bd Determine the TBS of the first layer based on the determined TBS index value and the number of REs allocated to the receiving device.
  • Step 501be Determine the TBS based on the number of layers of the spatial multiplexing and the TBS of the first layer.
  • the TBS correspondence table is established according to the size of the base station callable time-frequency resource.
  • the transmitted data is carried on multiple layers of the same time-frequency resource, and the size of the time-frequency resource allocated to the receiving device after spatial multiplexing may exceed the size of the base station callable time-frequency resource.
  • the spatial multiplexing technology it is first determined whether the resource size allocated by the base station to the receiving device exceeds the size of the time-frequency resource that the base station can call, and the TBS is determined in different manners based on the determination result.
  • the RE threshold may be set according to the number of layers of spatial multiplexing and the size of the time-frequency resource that the base station can call.
  • the base station cannot implement data transmission, and directly ends, and does not perform TBS determination and TB generation.
  • the step 501ba may be the same as the step 201aa in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the 501be may be the same as step 201de in the embodiment shown in FIG. 5d, and will not be described in detail herein.
  • the step 501bc may include:
  • the corresponding TBS is searched for based on the determined TBS index value, the number of REs allocated to the receiving device, and the number of spatially multiplexed layers.
  • the step 501bd may include:
  • the corresponding TBS is searched according to the determined TBS index value and the number of REs allocated to the receiving device, and the found TBS is used as the TBS of the first layer.
  • Step 502b Generate a TB based on the determined TBS.
  • the step 502b may be the same as the step 202a in the embodiment shown in FIG. 5a, and will not be described in detail herein.
  • the first embodiment determines whether the resource size allocated by the base station to the receiving device exceeds the size of the time-frequency resource that the base station can call, and determines the TBS in different manners based on the judgment result.
  • the problem that the TBS correspondence table cannot be directly used when the resource allocated by the base station to the receiving device exceeds the size of the base station callable time-frequency resource is solved.
  • the TBS is determined based on the MCS of the receiving device, the number of REs allocated to the receiving device, and the TB is generated based on the determined TBS. Since the number of REs varies with the length of the TTI, when the TTI length changes, the determined TBS can change accordingly.
  • the TB generated based on the determined TBS can avoid causing waste of time-frequency resources and poor error correction performance to meet service requirements, and is suitable for generating TB in the case of a change in TTI length.
  • step 501b may be implemented by the processor 332 in the base station shown in FIG. 2 executing the determining module 331b in the memory 331; the above step 502b may be performed by the processor 332 in the base station shown in FIG. Module 331c is implemented.
  • FIG. 10 is a schematic structural diagram of an apparatus for generating a TB according to an exemplary embodiment of the present application.
  • the device It can be realized by software, hardware or a combination of both to become all or part of the base station, so as to realize the generation provided by any one of FIG. 5a - FIG. 5f, FIG. 7a - FIG. 7f, FIG. 8a - FIG. 8f, and FIG. 9a - FIG. TB method.
  • the apparatus includes a determining unit 601 and a generating unit 602.
  • the determining unit 601 is configured to perform step 201a in the embodiment shown in FIG. 5a, and the generating unit 602 is configured to execute step 202a in the embodiment shown in FIG. 5a.
  • the determining unit 601 is configured to perform step 201b in the embodiment shown in FIG. 5b
  • the generating unit 602 is configured to perform step 202b in the embodiment shown in FIG. 5b.
  • the determining unit 601 is configured to perform step 201c in the embodiment shown in FIG. 5c
  • the generating unit 602 is configured to perform step 202c in the embodiment shown in FIG. 5c.
  • the determining unit 601 is configured to perform step 201d in the embodiment shown in FIG. 5d
  • the generating unit 602 is configured to perform step 202d in the embodiment shown in FIG. 5d.
  • the determining unit 601 is configured to perform step 201e in the embodiment shown in FIG. 5e
  • the generating unit 602 is configured to perform step 202e in the embodiment shown in FIG. 5e.
  • the determining unit 601 is configured to perform step 201f in the embodiment shown in FIG. 5f
  • the generating unit 602 is configured to perform step 202f in the embodiment shown in FIG. 5f.
  • the determining unit 601 is configured to perform step 301a in the embodiment shown in FIG. 7a
  • the generating unit 602 is configured to perform step 302a in the embodiment shown in FIG. 7a.
  • the determining unit 601 is configured to perform step 301b in the embodiment shown in FIG. 7b
  • the generating unit 602 is configured to perform step 302b in the embodiment shown in FIG. 7b.
  • the determining unit 601 is configured to perform step 301c in the embodiment shown in FIG. 7c
  • the generating unit 602 is configured to perform step 302c in the embodiment shown in FIG. 7c.
  • the determining unit 601 is configured to perform step 301d in the embodiment shown in FIG. 7d
  • the generating unit 602 is configured to perform step 302d in the embodiment shown in FIG. 7d.
  • the determining unit 601 is configured to perform step 301e in the embodiment shown in FIG. 7e
  • the generating unit 602 is configured to perform step 302e in the embodiment shown in FIG. 7e.
  • the determining unit 601 is configured to perform step 301f in the embodiment shown in FIG. 7f
  • the generating unit 602 is configured to perform step 302f in the embodiment shown in FIG. 7f.
  • the determining unit 601 is configured to perform step 401a in the embodiment shown in FIG. 8a
  • the generating unit 602 is configured to perform step 402a in the embodiment shown in FIG. 8a.
  • the determining unit 601 is configured to perform step 401b in the embodiment shown in FIG. 8b
  • the generating unit 602 is configured to perform step 402b in the embodiment shown in FIG. 8b.
  • the determining unit 601 is configured to perform step 401c in the embodiment shown in FIG. 8c
  • the generating unit 602 is configured to perform step 402c in the embodiment shown in FIG. 8c.
  • the determining unit 601 is configured to perform step 401d in the embodiment shown in FIG. 8d
  • the generating unit 602 is configured to perform step 402d in the embodiment shown in FIG. 8d.
  • the determining unit 601 is configured to perform step 401e in the embodiment shown in FIG. 8e
  • the generating unit 602 is configured to perform step 402e in the embodiment shown in FIG. 8e.
  • the determining unit 601 is configured to perform step 401f in the embodiment shown in FIG. 8f
  • the generating unit 602 is configured to perform step 402f in the embodiment shown in FIG. 8f.
  • the determining unit 601 is configured to perform step 501a in the embodiment shown in FIG. 9a
  • the generating unit 602 is configured to perform step 502a in the embodiment shown in FIG. 9a.
  • the determining unit 601 is configured to perform step 501b in the embodiment shown in FIG. 9b
  • the generating unit 602 is configured to perform step 502b in the embodiment shown in FIG. 9b.
  • the apparatus for generating a TB provided by the embodiment of the present invention has the same technical features as the method for generating a TB provided by any of the foregoing embodiments, the same technical problem can be solved, and the same technical effect is produced.
  • the apparatus for generating a TB when generating a TB, the apparatus for generating a TB provided by the foregoing embodiment is only illustrated by the division of each functional module, and in actual application, the function allocation may be completed by different functional modules as needed.
  • the internal structure of the device is divided into different functional modules to perform all or part of the functions described above.
  • the device for generating a TB provided by the foregoing embodiment is the same as the method for generating a TB, and the specific implementation process is described in detail in the method embodiment, and details are not described herein again.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

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Abstract

本申请公开了一种生成传输块的方法和装置，属于通信技术领域。所述方法包括：基于接收设备的MCS、分配给接收设备的RB的资源特征和符号数量确定TBS，其中，符号数量为每个RB内包含的符号数量，各个RB包含的符号数量相同；基于TBS生成TB。本申请基于接收设备的MCS、分配给接收设备的RB数量和RB内包含的符号数量确定TBS，并基于确定的TBS生成TB。由于在确定TBS的过程中考虑到RB内包含的符号数量，因此当RB内包含的符号数量变化时，确定的TBS可以随之变化，基于确定的TBS生成的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在RB内包含的符号数量变化的情况下生成TB。

Description

一种生成传输块的方法和装置
本申请要求于2016年4月25日提交中国专利局、申请号为201610262568.X、发明名称为“一种生成传输块的方法和装置”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领域，特别涉及一种生成传输块的方法和装置。
背景技术
传输块(Transport Block，简称TB)是物理层和介质访问控制(Media Access Control，简称MAC)层之间交换数据的基本单元。传输块的大小(Transport Block Size，简称TBS)取决于调制与编码策略(Modulating and Coding Scheme，简称MCS)和分配给终端的时频资源大小。
依照现有的LTE(Long Term Evolution，长期演进)标准，基站通常将时频资源以资源块(Resource Block，RB)对为单位分配给终端。图1是现有资源块对100的逻辑结构示意图。该资源块对100位于一子帧(Subframe)(未示出)内，且除了图1所示的资源块对100之外，该子帧还包含其他资源块对(未示出)。如图1所示，该资源块对100包括资源块102和资源块104。资源块102和资源块104在频域内由同一组连续的子载波(Subcarrier)承载，这组子载波中包含12个子载波。此外，资源块102和资源块104分属不同的时隙(Slot)，如资源块102属于时隙0，资源块104属于时隙1。在采用常规循环前缀(Cyclic Prefix，CP)的情况下，每个时隙包含时域内的7个符号(Symbol)，如图1所示。在采用扩展循环前缀的情况下，每个时隙包含时域内的6个符号(未示出)。同时资源块对100中的最小资源单位为资源粒(Resource Element，RE)，如资源粒106，每个资源粒由频域内的一个子载波和时域内的一个符号承载，因此在采用常规循环前缀的情况下，资源块102和资源块104均包含84(12×7)个资源粒，资源块对100包含168个资源粒；在采用扩展循环前缀的情况下，资源块102和资源块104均包含72(12×6)个资源粒，资源块对100包含144个资源粒。有时，资源块也称为物理资源块(Physical Resource Block，PRB)。
现有LTE标准采用如下方法确定TBS：确定分配给终端的时频资源承载数据采用的MCS；从MCS索引值与TBS索引值的对应表中，获取与确定出的MCS的MCS索引值对应的TBS索引值；获取分配给终端的PRB的数量；在TBS索引值、PRB的数量、TBS的对应表中，查找与获取到的TBS索引值和PRB的数量对应的TBS。
基于现有的LTE标准，在所采用的循环前缀类型(常规循环前缀或者扩展循环前缀)确定下来之后，PRB内包含的符号数量是固定的(7个或者6个)。然而，为适应新的业务场景的需要，在未来新的蜂窝通信标准中，PRB内包含的符号数量可能不再是固定不变的，而是可以根据需要(例如业务类型)经常发生变化的。如此一来，现有确定TBS的方式将不再适用。
发明内容
为了解决现有技术无法在PRB内包含的符号数量可变的情况下确定TBS的问题，本发明实施例提供了一种生成传输块的方法和装置。所述技术方案如下：
第一方面，本发明实施例提供了一种生成传输块的方法，所述方法包括：
基于接收设备的调制与编码策略MCS、分配给所述接收设备的资源块RB的资源特征和符号数量确定传输块TB的大小TBS，其中，所述符号数量为每个所述RB内包含的符号数量，各个所述RB包含的符号数量相同；
基于所述TBS生成所述TB。
基于接收设备的MCS、分配给接收设备的RB的资源特征和RB内包含的符号数量确定TBS，并基于确定的TBS生成TB。由于在确定TBS的过程中考虑到RB内包含的符号数量，因此当RB内包含的符号数量变化时，确定的TBS可以随之变化，基于确定的TBS生成的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在RB内包含的符号数量变化的情况下生成TB。
可选地，所述基于接收设备的MCS、分配给所述接收设备的RB的资源特征和符号数量确定TBS，具体包括：
基于所述MCS确定TBS索引值；
基于所述TBS索引值、所述RB的资源特征和所述符号数量确定所述TBS。
结合现有确定TBS的方法，先基于MCS确定TBS索引值，再根据TBS索引值确定TBS，对现有技术的改动较小，兼容性较强。
可选地，所述RB的资源特征为所述RB的数量。
可选地，所述RB的资源特征为等效RB的数量，所述等效RB的数量与所述RB的资源利用率相关联，所述RB的资源利用率为所述RB内数据占用的资源粒RE数量与所述RB占用的RE数量之间的比值。
针对RB的资源利用率的变化进行适应性调整。
可选地，所述基于所述TBS索引值、所述RB的资源特征和所述符号数量确定所述TBS，具体包括：
基于各个RB采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定所述等效RB的数量；
基于所述TBS索引值、所述等效RB的数量和所述符号数量确定所述TBS。
可选地，所述基于所述TBS索引值、所述RB的资源特征和所述符号数量确定所述TBS，具体包括：
基于所有RB采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定所述等效RB的数量；
基于所述TBS索引值、所述等效RB的数量和所述符号数量确定所述TBS。
提供两种等效RB的数量的确定方式，可根据实际情况进行选择较优的一种实现。
可选地，所述RB的资源特征为所述RB的数量与空间复用层数的乘积。
可选地，所述基于所述TBS索引值、所述RB的资源特征和所述符号数量确定所述TBS，具体包括：
判断所述RB的数量是否大于RB阈值；
当所述RB的数量小于或等于所述RB阈值时，基于所述TBS索引值、所述RB的数量与所述空间复用层数的乘积、以及所述符号数量确定所述TBS；
当所述RB的数量大于所述RB阈值时，基于所述TBS索引值、所述RB的资源特征和所述符号数量确定第一层的TBS；基于所述空间复用的层数、第一层的TBS确定所述TBS。
考虑到空间复用技术对TBS的影响，针对分配给接收设备的资源大小与基站可调用时频资源的大小之间的大小关系，采用不同的方法确定TBS，解决TBS对应表在基站分配给接收设备的资源大小超过基站可调用时频资源的大小时无法直接使用的问题。
第二方面，本发明实施例提供了一种生成传输块的装置，所述装置包括用于实现第一方面所述的方法的单元，例如确定单元、生成单元。
第三方面，本发明实施例还提供了一种生成传输块的装置，所述装置包括：存储器、与存储器连接的处理器，所述存储器用于存储软件程序以及模块，当所述处理器用于运行或执行存储在所述存储器内的软件程序以及模块时，可以执行第一方面所述的方法。
第四方面，本发明实施例还提供了一种计算机可读介质，用于存储供终端执行的程序代码，所述程序代码包括执行第一方面所述的方法的指令。
本发明实施例提供的技术方案带来的有益效果是：
基于接收设备的MCS、分配给接收设备的RB数量和RB内包含的符号数量确定TBS，并基于确定的TBS生成TB。由于在确定TBS的过程中考虑到RB内包含的符号数量，因此当RB内包含的符号数量变化时，确定的TBS可以随之变化，基于确定的TBS生成的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在RB内包含的符号数量变化的情况下生成TB。
附图说明
图1是本发明实施例提供的资源块对的结构示意图；
图2是本发明实施例提供的生成TB的方法的应用场景图；
图3是本发明实施例提供的为分配给终端的时频资源的结构示意图；
图4是本发明实施例提供的实现生成TBS的方法的基站的硬件结构图；
图5a是本发明实施例提供的一种生成TB的方法的流程图；
图5b是本发明实施例提供的另一种生成TB的方法的流程图；
图5c是本发明实施例提供的又一种生成TB的方法的流程图；
图5d是本发明实施例提供的又一种生成TB的方法的流程图；
图5e是本发明实施例提供的又一种生成TB的方法的流程图；
图5f是本发明实施例提供的又一种生成TB的方法的流程图；
图6是本发明实施例提供的资源映射模式的结构示意图；
图7a是本发明实施例提供的又一种生成TB的方法的流程图；
图7b是本发明实施例提供的又一种生成TB的方法的流程图；
图7c是本发明实施例提供的又一种生成TB的方法的流程图；
图7d是本发明实施例提供的又一种生成TB的方法的流程图；
图7e是本发明实施例提供的又一种生成TB的方法的流程图；
图7f是本发明实施例提供的又一种生成TB的方法的流程图；
图8a是本发明实施例提供的又一种生成TB的方法的流程图；
图8b是本发明实施例提供的又一种生成TB的方法的流程图；
图8c是本发明实施例提供的又一种生成TB的方法的流程图；
图8d是本发明实施例提供的又一种生成TB的方法的流程图；
图8e是本发明实施例提供的又一种生成TB的方法的流程图；
图8f是本发明实施例提供的又一种生成TB的方法的流程图；
图9a是本发明实施例提供的又一种生成TB的方法的流程图；
图9b是本发明实施例提供的又一种生成TB的方法的流程图；
图10是本发明实施例提供的一种生成TB的装置的结构示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。
在本文提及的“模块”是指存储在存储器中的能够实现某些功能的程序或指令；在本文中提及的“单元”是指按照逻辑划分的功能性结构，该“单元”可以由纯硬件实现，或者，软硬件的结合实现。
下面先结合图2简单介绍一下本发明实施例提供的生成TB的方法的应用场景。如图1所示，终端10和终端20位于基站30的服务区域(图2中用椭圆形圈出)内，基站30分别为终端10和终端20分配时频资源。基站30分配给终端10的时频资源用于承载基站30向终端10传输的数据，基站30分配给终端20的时频资源用于承载基站10向终端20传输的数据。需要说明的是，图2中的终端数量仅为举例，实际中以基站提供通信服务的终端数量为准。
具体地，参见图3，在一个子帧内，基站30为终端10分配的时频资源包括在频域上连续的两个RB对，基站30为终端20分配的时频资源包括在频域上连续的三个RB对。
本申请的RB可以与现有的LTE标准中的RB类似，不同之处在于，虽然同一调度区间内所有RB包含的符号数量相同，但是不同调度区间内的RB包含的符号数量可以不同。这里的调度区间可以是一个时隙，或者一个子帧，或者长度为其他值的时间区间，具体长度可根据需求设定。例如，若调度区间为一个时隙，则时隙A内所有RB包含的符号数量是相同的，但是时隙A内RB包含的符号数量与时隙B内RB包含的符号数量不同。上述不同也适用于频域，即同一调度区间内所有RB包含的子载波数量相同，不同调度区间内的RB包含的子载波数量可以不同。简单来说，在本申请中，LTE标准中的资源块可简化为一种单一的形式，即资源单元。该资源单元由一组连续或者非连续的子载波承载，且承载在一组连续或者非连续的符号上。不同调度区间内的资源单元包含的符号数量可以不同，不同调度区间内的资源单元包含的子载波数量也可以不同。为便于描述，下文仍以RB为例来描述本申请的技术方案，但本领域的技术人员应当明白，这种RB可理解为上述资源单元。
第五代移动通信技术(the fifth Generation mobile communication technology，简称5G)支持移动宽带增强(Enhanced Mobile Broadband，简称eMBB)、大规模机器类型通信(Massive Machine Type Communication，简称mMTC)、超高可靠性与低时延通信(Ultra  Reliable and Low Latency Communication，简称UR/LI)三大类应用场景。其中，eMBB的特点为高吞吐量，为了减少控制信令、混合自动重传请求(Hybrid Automatic Repeat Request，简称HARQ)造成的开销，需要采用较长的传输时间间隔(Transmission Time Interval，简称TTI)；mMTC支持高密度连接且通常采用小包传输，适合采用较短的TTI；UR/LI要求低时延，需要采用较短的TTI。如此一来，针对不同的场景，5G系统支持不同长度的调度区间。
本发明实施例针对5G系统的上述特点，提供一种同时考虑到MCS、符号的数量、RB的数量三个条件确定TBS并基于确定的TBS生成TB的技术，可以应用于5G等RB包含的符号数量变化的系统，也可以应用于LTE等RB包含的符号数量不变的系统。其中，上述MCS为一个调度区间内的MCS，上述RB为一个调度区间内为例如终端分配的RB。如上文所述，在本申请中，在一个调度区间内，所有RB内包含的符号数量是相同的，因此在确定TBS时考虑的上述符号的数量就是一个调度区间内每个RB内包含的符号数量。
下面结合具体的硬件结构对实现本发明实施例提供的生成TB的方法的基站进行说明。
图4示出了实现本发明实施例提供的生成TB的方法的基站结构。基站30包括多根天线31、射频模块32(射频拉远单元(Radio Remote Unit，简称RRU)或者(射频单元(Radio Frequency Unit，简称RFU))、基带单元(Building Base band Unit，简称BBU)33。基带单元33包括存储器331、处理器332、发送器333和接收器334。需要说明的是，图3示出的基站30的结构并不构成对基站30的限定，在实际应用中可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。
处理器332是基站30的控制中心，利用各种接口和线路连接整个基站30的各个部分，通过运行或执行存储在存储器331内的软件程序和/或模块，以及调用存储在存储器331内的数据，执行基站30的各种功能和处理数据，从而对基站30进行整体控制。可选的，处理器332可包括一个或多个处理核心。
存储器331可用于存储各种数据，例如各种配置参数，以及存储软件程序以及模块。处理器332通过运行存储在存储器331的软件程序以及模块，从而执行各种功能应用以及数据处理。存储器331可主要包括程序存储区和数据存储区，其中，程序存储区可存储操作系统331a、确定模块331b、生成模块331c等；存储数据区可存储根据基站30的使用所创建的数据，例如TBS索引值等。此外，存储器331可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(Static Random Access Memory，简称SRAM)，电可擦除可编程只读存储器(Electrically Erasable Programmable Read-Only Memory，简称EEPROM)，可擦除可编程只读存储器(Erasable Programmable Read Only Memory，简称EPROM)，可编程只读存储器(Programmable Read-Only Memory，简称PROM)，只读存储器(Read Only Memory，简称ROM)，磁存储器，快闪存储器，磁盘或光盘。相应地，存储器331还可以包括存储器控制器，以提供处理器332对存储器331的访问。
BBU 33通过与射频模块32连接，射频模块32通过电缆与天线31连接。在下行链路方向，BBU 33输出基带信号至射频模块32。射频模块32将基带信号变频到中频信号，再将中频信号变频到射频信号，然后采用功放单元(例如射频功率放大器)将射频信号放大，最后将放大后的射频信号通过天线31发射出去。在上行链路方向，来自终端的射频信号经天线31传递至射频模块32。射频模块32先将射频信号放大，再变频到中频信号，接着变 频到基带信号，然后将基带信号输出至BBU 33。
另外，多根天线31可以实现MIMO空间复用，通过调整多根天线31的角度，在空间上划分出的不同层上采用相同的时频资源传输不同的数据，充分利用空间资源增加系统容量。
下文就对本申请提供实施例的技术方案进行描述，应注意，如无特别说明，下文描述的技术方案应当理解为，为一个调度区间生成TB的方法。在一个调度区间内，MCS保持不变，所有RB内包含的符号数量是相同的，因此在确定TBS时考虑的符号数量就是一个调度区间内每个RB内包含的符号数量。
图5a示出了本申请一示例性实施例提供的一种生成TB的方法的流程图。在图5a所示的实施例中，发送设备(如图4所述的基站)为接收设备(如终端)分配时频资源，分配给接收设备的时频资源包括一个或多个RB。如图5a所示，该方法包括：
步骤201a：基于接收设备的MCS、分配给接收设备的RB数量和符号数量确定TBS。
在本实施例中，各个RB包含的符号数量相同，确定TBS所基于的符号数量为每个RB内包含的符号数量。
在实际应用中，发送设备根据接收设备反馈的信道状况确定MCS，并可根据可调用的时频资源、接收设备的业务类型(如通话、短信)、以及接收设备反馈的信道状况为接收设备分配时频资源。其中，信道状况可以包括信道质量指示(Channel Quality Indication，简称CQI)、预编码矩阵指示(Pre-coding Matrix Indicator，简称PMI)、秩指示(Rank Indication，简称RI)中的一种或多种。有关MCS和时频资源的分配可参考现有技术，本申请不再赘述。
具体地，该步骤201a可以包括：
步骤201aa：基于接收设备的MCS确定TBS索引值。
步骤201ab：基于确定的TBS索引值、分配给接收设备的RB数量和符号数量确定TBS。
可选地，该步骤201aa可以包括：
在TBS索引表中，查找接收设备的MCS的索引值对应的TBS索引值。
在本实施例中，TBS索引表用于表示MCS索引值和TBS索引值之间的对应关系。例如，TBS索引表可以如下表一所示：
Figure PCTCN2017078186-appb-000001
在实际应用中，MCS索引表除了包括MCS索引值和TBS索引值之外，还可以包括其它信息，比如表一中的调制阶数，本申请对此不作限制。当然，本领域的技术人员应当明白， 除了包括MCS索引值和TBS索引值，TBS索引表也可不再包括其他信息。
可选地，该步骤201ab可以包括：
基于确定的TBS索引值，确定对应的TBS对应表；
在确定的TBS对应表中，根据分配给接收设备的RB数量和符号数量查找对应的TBS。
在本实施例中，TBS对应表用于表示RB数量、符号数量、以及TBS之间的对应关系。在具体实现中，TBS索引值与TBS对应表一一对应。当确定的TBS索引值为某个定值时，对应的TBS对应表可以如下表二所示：
表二
Figure PCTCN2017078186-appb-000002
步骤202a：基于确定的TBS生成TB。
具体地，该步骤202a可以包括：
基于确定的TBS获取数据；
由获取的数据生成TB。
本发明实施例基于接收设备的MCS、分配给接收设备的RB数量和RB内包含的符号数量确定TBS，并基于确定的TBS生成TB。由于在确定TBS的过程中考虑到RB内包含的符号数量，因此当RB内包含的符号数量变化时，确定的TBS可以随之变化，基于确定的TBS生成 的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在RB内包含的符号数量变化的情况下生成TB。
需要说明的是，上述步骤201a可由图2所示的基站中处理器332执行存储器331中的确定模块331b来实现；上述步骤202a可由图2所示的基站中处理器332执行存储器331中的生成模块331c来实现。
图5b示出了本申请一示例性实施例提供的另一种生成TB的方法的流程图。图5b所示的实施例与图5a所示的实施例的不同之处在于，RB采用的资源映射模式可以变化。
资源映射模式(resource mapping mode)是将资源映射到各个信道和各个信号的方式。对同一资源采用不同资源映射模式，各个信道和各个信号中至少一个信道或信号映射到的资源大小不同。例如，参见图6，TTI 0内RB采用的资源映射模式包括下行控制段、数据段、保护段、上行段，TTI 1内RB采用的资源映射模式包括数据段、保护段、上行段。TTI0内下行控制段和数据段占据的符号数量之和等于TTI 1内数据段占据的符号数量，因此TTI 0内数据段占据的符号数量与TTI包含的符号数量之间的比值，小于TTI 1内数据段占据的符号数量与TTI包含的符号数量之间的比值。因此不同的资源映射模式传输数据的大小是不同的，进而TBS也会随之不同。如图5b所示，该方法包括：
步骤201b：基于接收设备的MCS、分配给接收设备的RB数量和符号数量确定TBS。
在本实施例中，MCS、RB数量和符号数量的定义以及确定方法可以与图5a所示的实施例相同，在此不再详述。
具体地，该步骤201b可以包括：
步骤201ba：基于接收设备的MCS确定TBS索引值。
步骤201bb：基于各个RB采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效RB的数量。
步骤201bc：基于确定的TBS索引值、等效RB的数量和符号数量确定TBS。
在本实施例中，等效RB的数量与RB的资源利用率相关联。RB的资源利用率可以为RB内数据占用的RE数量与RB占用的RE数量之间的比值。在实际应用中，RB的资源利用率也可以为RB内数据占用的RE数量与RB内除数据占用的RE数量之外的RE数量之间的比值。
在实际应用中，还可以为每种资源映射模式分别建立TBS对应表，确定TBS时根据采用的资源映射模式查找相应的TBS对应表，但这样会造成建表的工作量较大，查表时也不方便。本实施例选择一种资源映射模式作为基准建立TBS对应表，确定TBS时先根据采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值进行换算，再根据换算结果在作为基准的资源映射模式对应的TBS对应表进行查找对应的TBS，可以实现所有资源映射模式下TBS的确定，并且建表的工作量大大减少，查表也方便。
具体地，该步骤201ba可以与图5a所示的实施例中的步骤201aa相同，在此不再详述。
可选地，该步骤201bb可以包括：
以一种资源映射模式为基准，根据各个RB采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定各个RB的等效系数；
对确定出的各个RB的等效系数进行累加，并将累加结果向下取整的数值与1之中的最大值确定为等效RB的数量。
在实际应用中，各种资源映射模式是固定的，资源映射模式传输数据的大小随之固定， 可以预先建立各种资源映射模式相对作为基准的资源映射模式的等效系数表，确定各个RB的等效系数时直接查表即可。
在本实施例中，等效系数表用于表示采用的资源映射模式和等效系数之间的对应关系。等效系数表可以如下表三所示：
表三
Figure PCTCN2017078186-appb-000003
具体地，等效RB的数量可以采用如下公式(1)计算：
Figure PCTCN2017078186-appb-000004
其中，N‘RB为等效RB的数量，NRB为RB的数量，wi为各个RB的等效系数。
需要说明的是，公式(1)中进行向下取整是为了确保等效RB的数量不会造成最终确定的TBS过大而影响通信质量。同时公式(1)中与1比较取最大值是为了确保等效RB的数量至少为1。
另外，作为基准的资源映射模式可以任意选取，本申请对此不作限制。
本实施例仅以计算等效RB的数量为例，在实际应用中，还可以计算等效符号的数量，或者同时计算等效RB的数量和等效符号的数量。具体的计算方式可以与本实施例提供的计算等效RB的数量类似，在此不再详述。
可选地，该步骤201bc可以包括：
基于确定的TBS索引值，在针对作为基准的资源映射模式建立的TBS对应表(与表二类似)中，确定对应的TBS对应表；
在确定的TBS对应表中，根据等效RB的数量和符号数量查找对应的TBS。
步骤202b：基于确定的TBS生成TB。
具体地，该步骤202b可以与图5a所示的实施例中的步骤202a相同，在此不再详述。
本发明实施例针对RB采用的资源映射模式变化的情况，基于各个RB采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效RB的数量，只需要针对作为基准的资源映射模式建立TBS对应表即可在所有资源映射模式下找到等效RB的数量对应的TBS，大大节省建表和查表的工作量。同时基于由接收设备的MCS确定的TBS索引值、等效RB的数量和RB内包含的符号数量确定TBS，在确定TBS的过程中考虑到RB内包含的符号数量，因此当RB内包含的符号数量变化时，确定的TBS可以随之变化，基于确定的TBS生成的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在RB内包含的符号数量变化的情况下生成TB。
需要说明的是，上述步骤201b可由图2所示的基站中处理器332执行存储器331中的确定模块331b来实现；上述步骤202b可由图2所示的基站中处理器332执行存储器331中的生成模块331c来实现。
图5c示出了本申请一示例性实施例提供的又一种生成TB的方法的流程图。图5c所示的实施例与图5b所示的实施例的不同之处在于，确定等效RB的数量的方式不同。如图5c所示，该方法包括：
步骤201c：基于接收设备的MCS、分配给接收设备的RB数量和符号数量确定TBS。
在本实施例中，MCS、RB数量和符号数量的定义以及确定方法可以与图5a所示的实施例相同，在此不再详述。
具体地，该步骤201c可以包括：
步骤201ca：基于接收设备的MCS确定TBS索引值。
步骤201cb：基于所有RB采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效RB的数量。
步骤201cc：基于确定的TBS索引值、等效RB的数量和符号数量确定TBS。
具体地，该步骤201ca可以与图5a所示的实施例中的步骤201aa相同，在此不再详述。该步骤201cc可以与图5b所示的实施例中的步骤201bc相同，在此也不再详述。
可选地，该步骤201cb可以包括：
以一种资源映射模式为基准，根据所有RB采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定所有RB的等效系数；
将确定出的所有RB的资源的等效系数向下取整的数值与1之中的最大值确定为等效RB的数量。
具体地，等效RB的数量可以采用如下公式(2)计算：
Figure PCTCN2017078186-appb-000005
其中，N‘RB为等效RB的数量，w为所有RB的等效系数。
需要说明的是，与公式(1)相同，公式(2)中进行向下取整是为了确保等效RB的数量不会造成最终确定的TBS过大而影响通信质量。同时公式(2)中与1比较取最大值是为了确保等效RB的数量至少为1。
另外，作为基准的资源映射模式可以任意选取，本申请对此不作限制。
本实施例仅以计算等效RB的数量为例，在实际应用中，还可以计算等效符号的数量，或者同时计算等效RB的数量和等效符号的数量。具体的计算方式可以与本实施例提供的计算等效RB的数量类似，在此不再详述。
步骤202c：基于确定的TBS生成TB。
具体地，该步骤202c可以与图5a所示的实施例中的步骤202a相同，在此不再详述。
本发明实施例针对RB采用的资源映射模式变化的情况，基于所有RB采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效RB的数量，只需要针对作为基准的资源映射模式建立TBS对应表即可在所有资源映射模式下找到等效RB的数量对应的TBS，大大节省建表和查表的工作量。同时基于由接收设备的MCS确定的TBS索引值、等效RB的数量和RB内包含的符号数量确定TBS，在确定TBS的过程中考虑到RB内包含的符号数量，因此当RB内包含的符号数量变化时，确定的TBS可以随之变化，基于确定的TBS生成的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在RB内包含的符号数量变化的情况下生成TB。
需要说明的是，上述步骤201c可由图2所示的基站中处理器332执行存储器331中的 确定模块331b来实现；上述步骤202c可由图2所示的基站中处理器332执行存储器331中的生成模块331c来实现。
图5d示出了本申请一示例性实施例提供的又一种生成TB的方法的流程图。图5d所示的实施例与图5a所示的实施例的不同之处在于，采用空间复用技术向接收设备传输数据，即向接收设备传输的数据承载在多层相同的时频资源上。如图5d所示，该方法包括：
步骤201d：基于接收设备的MCS、分配给接收设备的RB数量和符号数量确定TBS。
在本实施例中，MCS、RB数量和符号数量的定义以及确定方法可以与图5a所示的实施例相同，在此不再详述。
具体地，该步骤201d可以包括：
步骤201da：基于接收设备的MCS确定TBS索引值。
步骤201db：判断分配给接收设备的RB数量是否大于RB阈值。当RB数量小于或等于RB阈值时，执行步骤201dc：当RB数量大于RB阈值时，执行步骤201dd-步骤201de。
步骤201dc：基于确定的TBS索引值、分配给接收设备的RB数量与空间复用的层数的乘积、符号数量确定TBS。
步骤201dd：基于确定的TBS索引值、分配给接收设备的RB数量、符号数量确定第一层的TBS。
步骤201de：基于空间复用的层数、第一层的TBS确定TBS。
在实际应用中，TBS对应表是根据基站可调用时频资源的大小建立的。当采用空间复用技术时，传输的数据承载在多层相同的时频资源上，分配给接收设备的时频资源空间复用之后的大小可能超过基站可调用时频资源的大小。例如，基站可调用时频资源包括100个RB，基站分配给接收设备的时频资源包括两层数量为51的RB，基站分配给接收设备的资源大小(51*2＝102个RB)超过基站可调度资源的大小(100个RB)。因此当采用空间复用技术时，先判断基站分配给接收设备的资源大小是否超过基站可调用时频资源的大小，并基于判断结果采用不同的方式确定TBS。
在具体实现中，RB阈值可以根据空间复用的层数、基站配置的带宽(基站可调用时频资源在频域上的大小)设定。例如，基站配置的带宽等效为100个RB，空间复用的层数为两层，则RB阈值为100/2＝50。此时若基站分配给接收设备的RB数量为49，49＜50，即分配给接收设备的RB数量小于RB阈值，分配给接收设备的时频资源小于基站可调度的时频资源；若基站分配给接收设备的RB数量为51，51＞50，即分配给接收设备的RB数量大于RB阈值，分配给接收设备的时频资源大于基站可调度的时频资源。
需要说明的是，当分配给接收设备的RB数量大于基站可调用时频资源大小时，基站无法实现数据的传输，直接结束，不进行TBS的确定和TB的生成。
具体地，该步骤201da可以与图5a所示的实施例中的步骤201aa相同，在此不再详述。
可选地，该步骤201dc可以包括：
基于确定的TBS索引值，确定对应的TBS对应表；
在确定的TBS对应表中，根据分配给接收设备的RB数量与空间复用的层数的乘积、以及符号数量查找对应的TBS。
可选地，该步骤201dd可以包括：
基于确定的TBS索引值，确定对应的TBS对应表；
在确定的TBS对应表中，根据分配给接收设备的RB数量和符号数量查找对应的TBS，并将找到的TBS作为第一层的TBS。
可选地，该步骤201de可以包括：
基于空间复用的层数，确定对应的TBS转换表；
在确定的TBS转换表中，根据空间复用的层数和第一层的TBS查找对应的TBS。
在本实施例中，TBS转换表用于表示空间复用的层数和TBS之间的对应关系。在具体实现中，空间复用的层数与TBS转换表一一对应。当空间复用的层数为两层时，对应的TBS转换表可以如下表四所示：
表四
第一层的TBS 两层的TBS 第一层的TBS 两层的TBS
X X X X
X X X X
X X X X
X X X X
X X X X
X X X X
X X X X
X X X X
X X X X
X X X X
X X X X
X X X X
X X X X
X X X X
X X X X
X X X X
步骤202d：基于确定的TBS生成TB。
具体地，该步骤202d可以与图5a所示的实施例中的步骤202a相同，在此不再详述。
本发明实施例针对采用空间复用技术向接收设备传输数据的情况，先判断基站分配给接收设备的资源大小是否超过基站可调用时频资源的大小，并基于判断结果采用不同的方式确定TBS，解决TBS对应表在基站分配给接收设备的资源大小超过基站可调用时频资源的大小时无法直接使用的问题。同时基于判断结果采用不同的方式确定TBS时均考虑到RB内包含的符号数量，因此当RB内包含的符号数量变化时，确定的TBS可以随之变化，基于确定的TBS生成的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在RB内包含的符号数量变化的情况下生成TB。
需要说明的是，上述步骤201d可由图2所示的基站中处理器332执行存储器331中的确定模块331b来实现；上述步骤202d可由图2所示的基站中处理器332执行存储器331中的生成模块331c来实现。
图5e示出了本申请一示例性实施例提供的又一种生成TB的方法的流程图。图5e所示的实施例与图5d所示的实施例的不同之处在于，RB采用的资源映射模式可以变化。其中，资源映射模式的介绍可以见图5b所示的实施例，在此不再详述。如图5e所示，该方法包括：
步骤201e：基于接收设备的MCS、分配给接收设备的RB数量和符号数量确定TBS。
在本实施例中，MCS、RB数量和符号数量的定义以及确定方法可以与图5a所示的实施例相同，在此不再详述。
具体地，该步骤201e可以包括：
步骤201ea：基于接收设备的MCS确定TBS索引值。
步骤201eb：基于各个RB采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效RB的数量。
步骤201ec：判断等效RB的数量是否大于RB阈值。当等效RB的数量小于或等于RB阈值时，执行步骤201ed；当等效RB的数量大于RB阈值时，执行步骤201ee-步骤201ef。
步骤201ed：基于确定的TBS索引值、等效RB的数量与空间复用的层数的乘积、符号数量确定TBS。
步骤201ee：基于确定的TBS索引值、等效RB的数量、符号数量确定第一层的TBS。
步骤201ef：基于空间复用的层数、第一层的TBS确定TBS。
具体地，该步骤201ea可以与图5a所示的实施例中的步骤201aa相同，在此不再详述。该步骤201eb可以与图5b所示的实施例中的步骤201bb相同，在此也不再详述。RB阈值可以按照图5d所示的实施例提供的方式确定，在此也不再详述。该步骤201ef可以与图5d所示的实施例中的步骤201de相同，在此不再详述。
可选地，该步骤201ed可以包括：
基于确定的TBS索引值，确定对应的TBS对应表；
在确定的TBS对应表中，根据等效RB的数量与空间复用的层数的乘积、以及符号数量查找对应的TBS。
可选地，该步骤201ee可以包括：
基于确定的TBS索引值，确定对应的TBS对应表；
在确定的TBS对应表中，根据等效RB的数量和符号数量查找对应的TBS，并将找到的TBS作为第一层的TBS。
步骤202e：基于确定的TBS生成TB。
具体地，该步骤202e可以与图5a所示的实施例中的步骤202a相同，在此不再详述。
本发明实施例针对RB采用的资源映射模式变化的情况，基于各个RB采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效RB的数量，只需要针对作为基准的资源映射模式建立TBS对应表即可在所有资源映射模式下找到等效RB的数量对应的TBS，大大节省建表和查表的工作量。同时针对采用空间复用技术向接收设备传输数据的情况，先判断基站分配给接收设备的资源大小是否超过基站可调用时频资源的大小，并基于判断结果采用不同的方式确定TBS，解决TBS对应表在基站分配给接收设备的资源大小超过基站可调用时频资源的大小时无法直接使用的问题。另外，基于判断结果采用不同的方式确定TBS时均考虑到RB内包含的符号数量，因此当RB内包含的符号数量变化时，确定 的TBS可以随之变化，基于确定的TBS生成的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在RB内包含的符号数量变化的情况下生成TB。
需要说明的是，上述步骤201e可由图2所示的基站中处理器332执行存储器331中的确定模块331b来实现；上述步骤202e可由图2所示的基站中处理器332执行存储器331中的生成模块331c来实现。
图5f示出了本申请一示例性实施例提供的又一种生成TB的方法的流程图。图5f所示的实施例与图5e所示的实施例的不同之处在于，确定等效RB的数量的方式不同。如图5f所示，该方法包括：
步骤201f：基于接收设备的MCS、分配给接收设备的RB数量和符号数量确定TBS。
在本实施例中，MCS、RB数量和符号数量的定义以及确定方法可以与图5a所示的实施例相同，在此不再详述。
具体地，该步骤201f可以包括：
步骤201fa：基于接收设备的MCS确定TBS索引值。
步骤201fb：基于所有RB采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效RB的数量。
步骤201fc：判断等效RB的数量是否大于RB阈值。当等效RB的数量小于或等于RB阈值时，执行步骤201fd；当等效RB的数量大于RB阈值时，执行步骤201fe-步骤201ff。
步骤201fd：基于确定的TBS索引值、等效RB的数量与空间复用的层数的乘积、符号数量确定TBS。
步骤201fe：基于确定的TBS索引值、等效RB的数量、符号数量确定第一层的TBS。
步骤201ff：基于空间复用的层数、第一层的TBS确定TBS。
具体地，该步骤201fa可以与图5a所示的实施例中的步骤201aa相同，在此不再详述。该步骤201fb可以与图5c所示的实施例中的步骤201cb相同，在此也不再详述。RB阈值可以按照图5d所示的实施例提供的方式确定，在此也不再详述。该步骤201fd可以与图5e所示的实施例中的步骤201ed相同，在此也不再详述。该步骤201fe可以与图5e所示的实施例中的步骤201ee相同，在此也不再详述。该步骤201ff可以与图5d所示的实施例中的步骤201de相同，在此不再详述。
步骤202f：基于确定的TBS生成TB。
具体地，该步骤202f可以与图5a所示的实施例中的步骤202a相同，在此不再详述。
本发明实施例针对RB采用的资源映射模式变化的情况，基于所有RB采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效RB的数量，只需要针对作为基准的资源映射模式建立TBS对应表即可在所有资源映射模式下找到等效RB的数量对应的TBS，大大节省建表和查表的工作量。同时针对采用空间复用技术向接收设备传输数据的情况，先判断基站分配给接收设备的资源大小是否超过基站可调用时频资源的大小，并基于判断结果采用不同的方式确定TBS，解决TBS对应表在基站分配给接收设备的资源大小超过基站可调用时频资源的大小时无法直接使用的问题。另外，基于判断结果采用不同的方式确定TBS时均考虑到RB内包含的符号数量，因此当RB内包含的符号数量变化时，确定的TBS可以随之变化，基于确定的TBS生成的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在RB内包含的符号数量变化的情况下生成TB。
需要说明的是，上述步骤201f可由图2所示的基站中处理器332执行存储器331中的确定模块331b来实现；上述步骤202f可由图2所示的基站中处理器332执行存储器331中的生成模块331c来实现。
图7a示出了本申请一示例性实施例提供的又一种生成TB的方法的流程图。图7a所示的实施例与图5a所示的实施例的不同之处在于，分配给接收设备的时频资源包括一个或多个TTI单元(Unit TTI)。
TTI单元由频域内Nsc个连续的子载波和时域内NSymbol个连续的符号承载，Nsc、NSymbol均为正整数。Nsc、NSymbol为定值，但本申请不限制Nsc、NSymbol的具体数值。例如，TTI单元由频域内12个连续的子载波和时域内7个连续的符号承载。另外，分配给接收设备的时频资源中，由同一组连续的子载波承载的TTI单元数量可以为任意正整数，由同一组连续的符号承载的TTI单元数量也可以为任意正整数。当TTI长度变化时，分配给接收设备的时频资源的TTI单元数量随之变化。
如图7a所示，该方法包括：
步骤301a：基于接收设备的MCS、分配给接收设备的TTI单元数量确定TBS。
在实际应用中，MCS的确定、以及时频资源的分配均可以与图5a所示的实施例相同，在此不再详述。如果时频资源以资源块对为单位分配给接收设备，则采用如下公式(3)计算TTI单元的数量：
NUnit TTI＝(NRB×LSymbol)/(Nsc×NSymbol)；    (3)
其中，NUnit TTI为TTI单元的数量，NRB为分配给接收设备的时频资源的RB数量，LSymbol为RB内包含的符号数量，Nsc为TTI单元在频域上占据的子载波的数量，NSymbol为TTI单元在时域上占据的符号的数量。
由公式(3)可知，当RB内包含的符号数量时，TTI单元数量随之变化。
具体地，该步骤301a可以包括：
步骤301aa：基于接收设备的MCS确定TBS索引值。
步骤301ab：基于确定的TBS索引值、分配给接收设备的TTI单元数量确定TBS。
具体地，该步骤301aa可以与图5a所示的实施例中的步骤201aa相同，在此不再详述。
可选地，该步骤301ab可以包括：
在TBS对应表中，根据确定的TBS索引值、分配给接收设备的TTI单元数量查找对应的TBS。
在本实施例中，TBS对应表用于表示TBS索引值、TTI单元数量、以及TBS之间的对应关系。例如，TBS对应表可以如下表五所示：
表五
Figure PCTCN2017078186-appb-000006
Figure PCTCN2017078186-appb-000007
步骤302a：基于确定的TBS生成TB。
具体地，该步骤302a可以与图5a所示的实施例中的步骤202a相同，在此不再详述。
本发明实施例基于接收设备的MCS、分配给接收设备的TTI单元数量确定TBS，并基于确定的TBS生成TB，由于TTI单元数量随TTI长度的变化而变化，因此当TTI长度变化时，确定的TBS可以随之变化，基于确定的TBS生成的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在TTI长度变化的情况下生成TB。
需要说明的是，上述步骤301a可由图2所示的基站中处理器332执行存储器331中的确定模块331b来实现；上述步骤302a可由图2所示的基站中处理器332执行存储器331中的生成模块331c来实现。
图7b示出了本申请一示例性实施例提供的又一种生成TB的方法的流程图。图7b所示的实施例与图7a所示的实施例的不同之处在于，TTI单元采用的资源映射模式可以变化。其中，资源映射模式的介绍可以见图5b所示的实施例，在此不再详述。如图7b所示，该方法包括：
步骤301b：基于接收设备的MCS、分配给接收设备的TTI单元数量确定TBS。
在本实施例中，MCS和TTI单元的定义以及确定方法可以与图7a所示的实施例相同，在此不再详述。
具体地，该步骤301b可以包括：
步骤301ba：基于接收设备的MCS确定TBS索引值。
步骤301bb：基于各个TTI单元采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效TTI单元的数量。
步骤301bc：基于确定的TBS索引值、等效TTI单元的数量确定TBS。
在本实施例中，等效TTI单元的数量与TTI单元的资源利用率相关联。TTI单元的资源利用率可以为TTI单元内数据占用的RE数量与TTI单元占用的RE数量之间的比值。在实际应用中，TTI单元的资源利用率也可以为TTI单元内数据占用的RE数量与TTI单元内除数据占用的RE数量之外的RE数量之间的比值。
如图5b所示的实施例所述，选择一种资源映射模式作为基准建立TBS对应表，确定TBS时先根据采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值进行换算， 再根据换算结果在作为基准的资源映射模式对应的TBS对应表进行查找对应的TBS，可以实现所有资源映射模式下TBS的确定，并且建表的工作量大大减少，查表也方便。
具体地，该步骤301ba可以与图5a所示的实施例中的步骤201aa相同，在此不再详述。
可选地，该步骤301bb可以包括：
以一种资源映射模式为基准，根据各个TTI单元采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定各个TTI单元的等效系数；
对确定出的各个TTI单元的等效系数进行累加，并将累加结果向下取整的数值与1之中的最大值确定为等效TTI单元的数量。
又如图5b所示的实施例所述，各种资源映射模式是固定的，资源映射模式传输数据的大小随之固定，可以预先建立各种资源映射模式相对作为基准的资源映射模式的等效系数表，确定各个TTI单元的等效系数时直接查表即可。
在本实施例中，等效系数表用于表示TTI单元采用的资源映射模式和等效系数之间的对应关系。等效系数表可以如下表六所示：
表六
Figure PCTCN2017078186-appb-000008
具体地，等效TTI单元的数量可以采用如下公式(4)计算：
Figure PCTCN2017078186-appb-000009
其中，N‘Unit TTI为等效TTI单元的数量，NUnit TTI为TTI单元的数量，wi为各个TTI单元的等效系数。
需要说明的是，公式(4)中进行向下取整是为了确保等效TTI单元的数量不会造成最终确定的TBS过大而影响通信质量。同时公式(4)中与1比较取最大值是为了确保等效TTI单元的数量至少为1。
另外，作为基准的资源映射模式可以任意选取，本申请对此不作限制。
可选地，该步骤301bc可以包括：
在针对作为基准的资源映射模式建立的TBS对应表(与表五类似)中，根据确定的TBS索引值、等效TTI单元的数量查找对应的TBS。
步骤302b：基于确定的TBS生成TB。
具体地，该步骤302b可以与图5a所示的实施例中的步骤202a相同，在此不再详述。
本发明实施例针对TTI单元采用的资源映射模式变化的情况，基于各个TTI单元采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效TTI单元的数量，只需要针对作为基准的资源映射模式建立TBS对应表即可在所有资源映射模式下找到等效TTI单元的数量对应的TBS，大大节省建表和查表的工作量。同时基于接收设备的MCS、分配给接收设备的TTI单元数量确定TBS，并基于确定的TBS生成TB，由于TTI单元数量随TTI长度的变化而变化，因此当TTI长度变化时，确定的TBS可以随之变化，基于确定的TBS生成的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在TTI 长度变化的情况下生成TB。
需要说明的是，上述步骤301b可由图2所示的基站中处理器332执行存储器331中的确定模块331b来实现；上述步骤302b可由图2所示的基站中处理器332执行存储器331中的生成模块331c来实现。
图7c示出了本申请一示例性实施例提供的又一种生成TB的方法的流程图。图7c所示的实施例与图7b所示的实施例的不同之处在于，确定等效TTI单元的数量的方式不同。如图7c所示，该方法包括：
步骤301c：基于接收设备的MCS、分配给接收设备的TTI单元数量确定TBS。
在本实施例中，MCS和TTI单元的定义以及确定方法可以与图7a所示的实施例相同，在此不再详述。
具体地，该步骤301c可以包括：
步骤301ca：基于接收设备的MCS确定TBS索引值。
步骤301cb：基于所有TTI单元采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效TTI单元的数量。
步骤301cc：基于确定的TBS索引值、等效TTI单元的数量确定TBS。
具体地，该步骤301ca可以与图5a所示的实施例中的步骤201aa相同，在此不再详述。该步骤301cc可以与图7b所示的实施例中的步骤301bc相同，在此不再详述。
可选地，该步骤301cb可以包括：
以一种资源映射模式为基准，根据所有TTI单元采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定所有TTI单元的等效系数；
对确定出的所有TTI单元的等效系数向下取整的数值与1之中的最大值确定为等效TTI单元的数量。
具体地，等效TTI单元的数量可以采用如下公式(5)计算：
Figure PCTCN2017078186-appb-000010
其中，N‘Unit TTI为等效TTI单元的数量，w为所有TTI单元的等效系数。
需要说明的是，与公式(4)相同，公式(5)中进行向下取整是为了确保等效TTI单元的数量不会造成最终确定的TBS过大而影响通信质量。同时公式(5)中与1比较取最大值是为了确保等效TTI单元的数量至少为1。
另外，作为基准的资源映射模式可以任意选取，本申请对此不作限制。
步骤302c：基于确定的TBS生成TB。
具体地，该步骤302c可以与图5a所示的实施例中的步骤202a相同，在此不再详述。
本发明实施例针对TTI单元采用的资源映射模式变化的情况，基于所有TTI单元采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效TTI单元的数量，只需要针对作为基准的资源映射模式建立TBS对应表即可在所有资源映射模式下找到等效TTI单元的数量对应的TBS，大大节省建表和查表的工作量。同时基于接收设备的MCS、分配给接收设备的TTI单元数量确定TBS，并基于确定的TBS生成TB，由于TTI单元数量随TTI长度的变化而变化，因此当TTI长度变化时，确定的TBS可以随之变化，基于确定的TBS生成的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在TTI长度变化的情况下生成TB。
需要说明的是，上述步骤301c可由图2所示的基站中处理器332执行存储器331中的确定模块331b来实现；上述步骤302c可由图2所示的基站中处理器332执行存储器331中的生成模块331c来实现。
图7d示出了本申请一示例性实施例提供的又一种生成TB的方法的流程图。图7d所示的实施例与图7a所示的实施例的不同之处在于，采用空间复用技术向接收设备传输数据，即向接收设备传输的数据承载在多层相同的时频资源上。如图7d所示，该方法包括：
步骤301d：基于接收设备的MCS、分配给接收设备的TTI单元数量确定TBS。
在本实施例中，MCS和TTI单元的定义以及确定方法可以与图7a所示的实施例相同，在此不再详述。
具体地，该步骤301d可以包括：
步骤301da：基于接收设备的MCS确定TBS索引值。
步骤301db：判断分配给接收设备的TTI单元数量是否大于TTI阈值。当TTI单元数量小于或等于TTI单元阈值时，执行步骤301dc；当TTI单元数量大于TTI阈值时，执行步骤301dd-步骤301de。
步骤301dc：基于确定的TBS索引值、分配给接收设备的TTI单元数量与空间复用的层数的乘积确定TBS。
步骤301dd：基于确定的TBS索引值、分配给接收设备的TTI单元数量确定第一层的TBS。
步骤301de：基于空间复用的层数、第一层的TBS确定TBS。
如图5d所示的实施例所述，TBS对应表是根据基站可调用时频资源的大小建立的。当采用空间复用技术时，传输的数据承载在多层相同的时频资源上，分配给接收设备的时频资源空间复用之后的大小可能超过基站可调用时频资源的大小，因此当采用空间复用技术时，先判断基站分配给接收设备的资源大小是否超过基站可调用时频资源的大小，并基于判断结果采用不同的方式确定TBS。TTI单元阈值可以根据空间复用的层数、基站可调用时频资源大小设定。例如，基站可调用时频资源为100个TTI单元，空间复用的层数为两层，则TTI单元阈值为100/2＝50。另外，当分配给接收设备的TTI单元数量大于基站可调用时频资源大小时，基站无法实现数据的传输，直接结束，不进行TBS的确定和TB的生成。
具体地，该步骤301da可以与图5a所示的实施例中的步骤201aa相同，在此不再详述。该步骤301de可以与图5d所示的实施例中的步骤201de相同，在此不再详述。
可选地，该步骤301dc可以包括：
在TBS对应表中，根据确定的TBS索引值、分配给接收设备的TTI单元数量与空间复用的层数的乘积查找对应的TBS。
可选地，该步骤301dd可以包括：
在TBS对应表中，根据确定的TBS索引值、分配给接收设备的TTI单元数量查找对应的TBS，并将找到的TBS作为第一层的TBS。
步骤302d：基于确定的TBS生成TB。
具体地，该步骤302d可以与图5a所示的实施例中的步骤202a相同，在此不再详述。
本发明实施例针对采用空间复用技术向接收设备传输数据的情况，先判断基站分配给接收设备的资源大小是否超过基站可调用时频资源的大小，并基于判断结果采用不同的方 式确定TBS，解决TBS对应表在基站分配给接收设备的资源大小超过基站可调用时频资源的大小时无法直接使用的问题。同时基于接收设备的MCS、分配给接收设备的TTI单元数量确定TBS，并基于确定的TBS生成TB，由于TTI单元数量随TTI长度的变化而变化，因此当TTI长度变化时，确定的TBS可以随之变化，基于确定的TBS生成的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在TTI长度变化的情况下生成TB。
需要说明的是，上述步骤301d可由图2所示的基站中处理器332执行存储器331中的确定模块331b来实现；上述步骤302d可由图2所示的基站中处理器332执行存储器331中的生成模块331c来实现。
图7e示出了本申请一示例性实施例提供的又一种生成TB的方法的流程图。图7e所示的实施例与图7d所示的实施例的不同之处在于，TTI单元采用的资源映射模式可以变化。其中，资源映射模式的介绍可以见图5b所示的实施例，在此不再详述。如图7e所示，该方法包括：
步骤301e：基于接收设备的MCS、分配给接收设备的TTI单元数量确定TBS。
在本实施例中，MCS和TTI单元的定义以及确定方法可以与图7a所示的实施例相同，在此不再详述。
具体地，该步骤301e可以包括：
步骤301ea：基于接收设备的MCS确定TBS索引值。
步骤301eb：基于各个TTI单元采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效TTI单元的数量。
步骤301ec：判断等效TTI单元的数量是否大于TTI阈值。当等效TTI单元的数量小于或等于TTI单元阈值时，执行步骤301ed；当等效TTI单元的数量大于TTI单元阈值时，执行步骤301ee-步骤301ef。
步骤301ed：基于确定的TBS索引值、等效TTI单元的数量与空间复用的层数的乘积确定TBS。
步骤301ee：基于确定的TBS索引值、等效TTI单元的数量确定第一层的TBS。
步骤301ef：基于空间复用的层数、第一层的TBS确定TBS。
具体地，该步骤301ea可以与图5a所示的实施例中的步骤201aa相同，在此不再详述。该步骤301eb可以与图7b所示的实施例中的步骤301bb相同，在此也不再详述。TTI单元阈值可以按照图7d所示的实施例提供的方式确定，在此也不再详述。该步骤301ef可以与图7d所示的实施例中的步骤301de相同，在此不再详述。
可选地，该步骤301ed可以包括：
在TBS对应表中，根据确定的TBS索引值、等效TTI单元的数量与空间复用的层数的乘积查找对应的TBS。
可选地，该步骤301ee可以包括：
在TBS对应表中，根据确定的TBS索引值、等效TTI单元的数量与空间复用的层数的乘积查找对应的TBS，并将找到的TBS作为第一层的TBS。
步骤302e：基于确定的TBS生成TB。
具体地，该步骤302e可以与图5a所示的实施例中的步骤202a相同，在此不再详述。
本发明实施例针对TTI单元采用的资源映射模式变化的情况，基于各个TTI单元采用 的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效TTI单元的数量，只需要针对作为基准的资源映射模式建立TBS对应表即可在所有资源映射模式下找到等效TTI单元的数量对应的TBS，大大节省建表和查表的工作量。同时针对采用空间复用技术向接收设备传输数据的情况，先判断基站分配给接收设备的资源大小是否超过基站可调用时频资源的大小，并基于判断结果采用不同的方式确定TBS，解决TBS对应表在基站分配给接收设备的资源大小超过基站可调用时频资源的大小时无法直接使用的问题。另外，基于接收设备的MCS、分配给接收设备的TTI单元数量确定TBS，并基于确定的TBS生成TB，由于TTI单元数量随TTI长度的变化而变化，因此当TTI长度变化时，确定的TBS可以随之变化，基于确定的TBS生成的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在TTI长度变化的情况下生成TB。
需要说明的是，上述步骤301e可由图2所示的基站中处理器332执行存储器331中的确定模块331b来实现；上述步骤302e可由图2所示的基站中处理器332执行存储器331中的生成模块331c来实现。
图7f示出了本申请一示例性实施例提供的又一种生成TB的方法的流程图。图7f所示的实施例与图7e所示的实施例的不同之处在于，确定等效TTI单元的数量的方式不同。如图7f所示，该方法包括：
步骤301f：基于接收设备的MCS、分配给接收设备的TTI单元数量确定TBS。
在本实施例中，MCS和TTI单元的定义以及确定方法可以与图7a所示的实施例相同，在此不再详述。
具体地，该步骤301f可以包括：
步骤301fa：基于接收设备的MCS确定TBS索引值。
步骤301fb：基于所有TTI单元采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效TTI单元的数量。
步骤301fc：判断等效TTI单元的数量是否大于TTI阈值。当等效TTI单元的数量小于或等于TTI单元阈值时，执行步骤301fd；当等效TTI单元的数量大于TTI单元阈值时，执行步骤301fe-步骤301ff。
步骤301fd：基于确定的TBS索引值、等效TTI单元的数量与空间复用的层数的乘积确定TBS。
步骤301fe：基于确定的TBS索引值、等效TTI单元的数量确定第一层的TBS。
步骤301ff：基于空间复用的层数、第一层的TBS确定TBS。
具体地，该步骤301fa可以与图5a所示的实施例中的步骤201aa相同，在此不再详述。该步骤301fb可以与图7c所示的实施例中的步骤301cb相同，在此也不再详述。TTI单元阈值可以按照图7d所示的实施例提供的方式确定，在此也不再详述。该步骤301fd可以与图7e所示的实施例中的步骤301ed相同，在此不再详述。该步骤301fe可以与图7e所示的实施例中的步骤301ee相同，在此不再详述。该步骤301ff可以与图7d所示的实施例中的步骤301de相同，在此不再详述。
步骤302f：基于确定的TBS生成TB。
具体地，该步骤302f可以与图5a所示的实施例中的步骤202a相同，在此不再详述。
本发明实施例针对TTI单元采用的资源映射模式变化的情况，基于所有TTI单元采用 的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效TTI单元的数量，只需要针对作为基准的资源映射模式建立TBS对应表即可在所有资源映射模式下找到等效TTI单元的数量对应的TBS，大大节省建表和查表的工作量。同时针对采用空间复用技术向接收设备传输数据的情况，先判断基站分配给接收设备的资源大小是否超过基站可调用时频资源的大小，并基于判断结果采用不同的方式确定TBS，解决TBS对应表在基站分配给接收设备的资源大小超过基站可调用时频资源的大小时无法直接使用的问题。另外，基于接收设备的MCS、分配给接收设备的TTI单元数量确定TBS，并基于确定的TBS生成TB，由于TTI单元数量随TTI长度的变化而变化，因此当TTI长度变化时，确定的TBS可以随之变化，基于确定的TBS生成的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在TTI长度变化的情况下生成TB。
需要说明的是，上述步骤301f可由图2所示的基站中处理器332执行存储器331中的确定模块331b来实现；上述步骤302f可由图2所示的基站中处理器332执行存储器331中的生成模块331c来实现。
图8a示出了本申请一示例性实施例提供的又一种生成TB的方法的流程图。图8a所示的实施例与图5a所示的实施例的不同之处在于，分配给接收设备的时频资源包括一个或多个符号单元(Symbol符号)。
符号单元由频域内Nsc个连续的子载波和时域内NSymbol个连续的符号承载，Nsc、NSymbol均为正整数。Nsc、NSymbol为定值，但本申请不限制Nsc、NSymbol的具体数值。例如，符号单元由频域内12个连续的子载波和时域内1个符号承载。另外，分配给接收设备的时频资源中，由同一组连续的子载波承载的符号单元数量可以为任意正整数，由同一组连续的符号承载的符号单元数量也可以为任意正整数。当符号长度变化时，分配给接收设备的时频资源的符号单元数量随之变化。
如图8a所示，该方法包括：
步骤401a：基于接收设备的MCS、分配给接收设备的符号单元数量确定TBS。
在实际应用中，MCS的确定、以及时频资源的分配均可以与图5a所示的实施例相同，在此不再详述。如果时频资源以资源块对为单位分配给接收设备，则采用如下公式(6)计算符号单元的数量：
NUnit Symbol＝(NRB×LSymbol)/(Nsc×NSymbol)；    (6)
其中，NUnit Symbol为符号单元的数量，NRB为分配给接收设备的时频资源的RB数量，LSymbol为RB内包含的符号数量，Nsc为符号单元在频域上占据的子载波的数量，NSymbol为符号单元在时域上占据的符号的数量。
由公式(3)可知，当RB内包含的符号数量时，符号单元数量随之变化。
具体地，该步骤401a可以包括：
步骤401aa：基于接收设备的MCS确定TBS索引值。
步骤401ab：基于确定的TBS索引值、分配给接收设备的符号单元数量确定TBS。
具体地，该步骤401aa可以与图5a所示的实施例中的步骤201aa相同，在此不再详述。
可选地，该步骤401ab可以包括：
在TBS对应表中，根据确定的TBS索引值、分配给接收设备的符号单元数量查找对应的TBS。
在本实施例中，TBS对应表用于表示TBS索引值、符号单元数量、以及TBS之间的对应关系。例如，TBS对应表可以如下表七所示：
表七
Figure PCTCN2017078186-appb-000011
步骤402a：基于确定的TBS生成TB。
具体地，该步骤402a可以与图5a所示的实施例中的步骤202a相同，在此不再详述。
本发明实施例基于接收设备的MCS、分配给接收设备的符号单元数量确定TBS，并基于确定的TBS生成TB，由于符号单元数量随符号长度的变化而变化，因此当符号长度变化时，确定的TBS可以随之变化，基于确定的TBS生成的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在符号长度变化的情况下生成TB。
需要说明的是，上述步骤401a可由图2所示的基站中处理器332执行存储器331中的确定模块331b来实现；上述步骤402a可由图2所示的基站中处理器332执行存储器331中的生成模块331c来实现。
图8b示出了本申请一示例性实施例提供的又一种生成TB的方法的流程图。图8b所示的实施例与图8a所示的实施例的不同之处在于，符号单元采用的资源映射模式可以变化。其中，资源映射模式的介绍可以见图5b所示的实施例，在此不再详述。如图8b所示，该方法包括：
步骤401b：基于接收设备的MCS、分配给接收设备的符号单元数量确定TBS。
在本实施例中，MCS和符号单元的定义以及确定方法可以与图8a所示的实施例相同，在此不再详述。
具体地，该步骤401b可以包括：
步骤401ba：基于接收设备的MCS确定TBS索引值。
步骤401bb：基于各个符号单元采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效符号单元的数量。
步骤401bc：基于确定的TBS索引值、等效符号单元的数量确定TBS。
在本实施例中，等效符号单元的数量与符号单元的资源利用率相关联。符号单元的资源利用率可以为符号单元内数据占用的RE数量与符号单元占用的RE数量之间的比值。在实际应用中，符号单元的资源利用率也可以为符号单元内数据占用的RE数量与符号单元内除数据占用的RE数量之外的RE数量之间的比值。
如图5b所示的实施例所述，选择一种资源映射模式作为基准建立TBS对应表，确定TBS时先根据采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值进行换算，再根据换算结果在作为基准的资源映射模式对应的TBS对应表进行查找对应的TBS，可以实现所有资源映射模式下TBS的确定，并且建表的工作量大大减少，查表也方便。
具体地，该步骤401ba可以与图5a所示的实施例中的步骤201aa相同，在此不再详述。
可选地，该步骤401bb可以包括：
以一种资源映射模式为基准，根据各个符号单元采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定各个符号单元的等效系数；
对确定出的各个符号单元的等效系数进行累加，并将累加结果向下取整的数值与1之中的最大值确定为等效符号单元的数量。
又如图5b所示的实施例所述，各种资源映射模式是固定的，资源映射模式传输数据的大小随之固定，可以预先建立各种资源映射模式相对作为基准的资源映射模式的等效系数表，确定各个符号单元的等效系数时直接查表即可。
在本实施例中，等效系数表用于表示符号单元采用的资源映射模式和等效系数之间的对应关系。等效系数表可以如下表八所示：
表八
Figure PCTCN2017078186-appb-000012
具体地，等效符号单元的数量可以采用如下公式(7)计算：
Figure PCTCN2017078186-appb-000013
其中，N‘Unit Symbol为等效符号单元的数量，NUnit Symbol为符号单元的数量，wi为各个符号单元的等效系数。
需要说明的是，公式(7)中进行向下取整是为了确保等效符号单元的数量不会造成最终确定的TBS过大而影响通信质量。同时公式(7)中与1比较取最大值是为了确保等效符号单元的数量至少为1。
另外，作为基准的资源映射模式可以任意选取，本申请对此不作限制。
可选地，该步骤401bc可以包括：
在针对作为基准的资源映射模式建立的TBS对应表(与表五类似)中，根据确定的TBS索引值、等效符号单元的数量查找对应的TBS。
步骤402b：基于确定的TBS生成TB。
具体地，该步骤402b可以与图5a所示的实施例中的步骤202a相同，在此不再详述。
本发明实施例针对符号单元采用的资源映射模式变化的情况，基于各个符号单元采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效符号单元的数量，只需要针对作为基准的资源映射模式建立TBS对应表即可在所有资源映射模式下找到等效符号单元的数量对应的TBS，大大节省建表和查表的工作量。同时基于接收设备的MCS、分配给接收设备的符号单元数量确定TBS，并基于确定的TBS生成TB，由于符号单元数量随符号长度的变化而变化，因此当符号长度变化时，确定的TBS可以随之变化，基于确定的TBS生成的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在符号长度变化的情况下生成TB。
需要说明的是，上述步骤401b可由图2所示的基站中处理器332执行存储器331中的确定模块331b来实现；上述步骤402b可由图2所示的基站中处理器332执行存储器331中的生成模块331c来实现。
图8c示出了本申请一示例性实施例提供的又一种生成TB的方法的流程图。图8c所示的实施例与图8b所示的实施例的不同之处在于，确定等效符号单元的数量的方式不同。如图8c所示，该方法包括：
步骤401c：基于接收设备的MCS、分配给接收设备的符号单元数量确定TBS。
在本实施例中，MCS和符号单元的定义以及确定方法可以与图8a所示的实施例相同，在此不再详述。
具体地，该步骤401c可以包括：
步骤401ca：基于接收设备的MCS确定TBS索引值。
步骤401cb：基于所有符号单元采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效符号单元的数量。
步骤401cc：基于确定的TBS索引值、等效符号单元的数量确定TBS。
具体地，该步骤401ca可以与图5a所示的实施例中的步骤201aa相同，在此不再详述。该步骤401cc可以与图8b所示的实施例中的步骤401bc相同，在此不再详述。
可选地，该步骤401cb可以包括：
以一种资源映射模式为基准，根据所有符号单元采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定所有符号单元的等效系数；
对确定出的所有符号单元的等效系数向下取整的数值与1之中的最大值确定为等效符号单元的数量。
具体地，等效符号单元的数量可以采用如下公式(8)计算：
Figure PCTCN2017078186-appb-000014
其中，N‘Unit Symbol为等效符号单元的数量，w为所有符号单元的等效系数。
需要说明的是，与公式(7)相同，公式(8)中进行向下取整是为了确保等效符号单元的数量不会造成最终确定的TBS过大而影响通信质量。同时公式(8)中与1比较取最大 值是为了确保等效符号单元的数量至少为1。
另外，作为基准的资源映射模式可以任意选取，本申请对此不作限制。
步骤402c：基于确定的TBS生成TB。
具体地，该步骤402c可以与图5a所示的实施例中的步骤202a相同，在此不再详述。
本发明实施例针对符号单元采用的资源映射模式变化的情况，基于所有符号单元采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效符号单元的数量，只需要针对作为基准的资源映射模式建立TBS对应表即可在所有资源映射模式下找到等效符号单元的数量对应的TBS，大大节省建表和查表的工作量。同时基于接收设备的MCS、分配给接收设备的符号单元数量确定TBS，并基于确定的TBS生成TB，由于符号单元数量随符号长度的变化而变化，因此当符号长度变化时，确定的TBS可以随之变化，基于确定的TBS生成的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在符号长度变化的情况下生成TB。
需要说明的是，上述步骤401c可由图2所示的基站中处理器332执行存储器331中的确定模块331b来实现；上述步骤402c可由图2所示的基站中处理器332执行存储器331中的生成模块331c来实现。
图8d示出了本申请一示例性实施例提供的又一种生成TB的方法的流程图。图8d所示的实施例与图8a所示的实施例的不同之处在于，采用空间复用技术向接收设备传输数据，即向接收设备传输的数据承载在多层相同的时频资源上。如图8d所示，该方法包括：
步骤401d：基于接收设备的MCS、分配给接收设备的符号单元数量确定TBS。
在本实施例中，MCS和符号单元的定义以及确定方法可以与图8a所示的实施例相同，在此不再详述。
具体地，该步骤401d可以包括：
步骤401da：基于接收设备的MCS确定TBS索引值。
步骤401db：判断分配给接收设备的符号单元数量是否大于符号阈值。当符号单元数量小于或等于符号单元阈值时，执行步骤401dc；当符号单元数量大于符号阈值时，执行步骤401dd-步骤401de。
步骤401dc：基于确定的TBS索引值、分配给接收设备的符号单元数量与空间复用的层数的乘积确定TBS。
步骤401dd：基于确定的TBS索引值、分配给接收设备的符号单元数量确定第一层的TBS。
步骤401de：基于空间复用的层数、第一层的TBS确定TBS。
如图5d所示的实施例所述，TBS对应表是根据基站可调用时频资源的大小建立的。当采用空间复用技术时，传输的数据承载在多层相同的时频资源上，分配给接收设备的时频资源空间复用之后的大小可能超过基站可调用时频资源的大小，因此当采用空间复用技术时，先判断基站分配给接收设备的资源大小是否超过基站可调用时频资源的大小，并基于判断结果采用不同的方式确定TBS。符号单元阈值可以根据空间复用的层数、基站可调用时频资源大小设定。例如，基站可调用时频资源为100个符号单元，空间复用的层数为两层，则符号单元阈值为100/2＝50。另外，当分配给接收设备的符号单元数量大于基站可调用时频资源大小时，基站无法实现数据的传输，直接结束，不进行TBS的确定和TB的生成。
具体地，该步骤401da可以与图5a所示的实施例中的步骤201aa相同，在此不再详述。该步骤401de可以与图5d所示的实施例中的步骤201de相同，在此不再详述。
可选地，该步骤401dc可以包括：
在TBS对应表中，根据确定的TBS索引值、分配给接收设备的符号单元数量与空间复用的层数的乘积查找对应的TBS。
可选地，该步骤401dd可以包括：
在TBS对应表中，根据确定的TBS索引值、分配给接收设备的符号单元数量查找对应的TBS，并将找到的TBS作为第一层的TBS。
步骤402d：基于确定的TBS生成TB。
具体地，该步骤402d可以与图5a所示的实施例中的步骤202a相同，在此不再详述。
本发明实施例针对采用空间复用技术向接收设备传输数据的情况，先判断基站分配给接收设备的资源大小是否超过基站可调用时频资源的大小，并基于判断结果采用不同的方式确定TBS，解决TBS对应表在基站分配给接收设备的资源大小超过基站可调用时频资源的大小时无法直接使用的问题。同时基于接收设备的MCS、分配给接收设备的符号单元数量确定TBS，并基于确定的TBS生成TB，由于符号单元数量随符号长度的变化而变化，因此当符号长度变化时，确定的TBS可以随之变化，基于确定的TBS生成的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在符号长度变化的情况下生成TB。
需要说明的是，上述步骤401d可由图2所示的基站中处理器332执行存储器331中的确定模块331b来实现；上述步骤402d可由图2所示的基站中处理器332执行存储器331中的生成模块331c来实现。
图8e示出了本申请一示例性实施例提供的又一种生成TB的方法的流程图。图8e所示的实施例与图8d所示的实施例的不同之处在于，符号单元采用的资源映射模式可以变化。其中，资源映射模式的介绍可以见图5b所示的实施例，在此不再详述。如图8e所示，该方法包括：
步骤401e：基于接收设备的MCS、分配给接收设备的符号单元数量确定TBS。
在本实施例中，MCS和符号单元的定义以及确定方法可以与图8a所示的实施例相同，在此不再详述。
具体地，该步骤401e可以包括：
步骤401ea：基于接收设备的MCS确定TBS索引值。
步骤401eb：基于各个符号单元采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效符号单元的数量。
步骤401ec：判断等效符号单元的数量是否大于符号单元阈值。当等效符号单元的数量小于或等于符号单元阈值时，执行步骤401ed；当等效符号单元的数量大于符号单元阈值时，执行步骤401ee-步骤401ef。
步骤401ed：基于确定的TBS索引值、等效符号单元的数量与空间复用的层数的乘积确定TBS。
步骤401ee：基于确定的TBS索引值、等效符号单元的数量确定第一层的TBS。
步骤401ef：基于空间复用的层数、第一层的TBS确定TBS。
具体地，该步骤401ea可以与图5a所示的实施例中的步骤201aa相同，在此不再详述。 该步骤401eb可以与图8b所示的实施例中的步骤401bb相同，在此也不再详述。符号单元阈值可以按照图8d所示的实施例提供的方式确定，在此也不再详述。该步骤401ef可以与图8d所示的实施例中的步骤401de相同，在此不再详述。
可选地，该步骤401ed可以包括：
在TBS对应表中，根据确定的TBS索引值、等效符号单元的数量与空间复用的层数的乘积查找对应的TBS。
可选地，该步骤401ee可以包括：
在TBS对应表中，根据确定的TBS索引值、等效符号单元的数量与空间复用的层数的乘积查找对应的TBS，并将找到的TBS作为第一层的TBS。
步骤402e：基于确定的TBS生成TB。
具体地，该步骤402e可以与图5a所示的实施例中的步骤202a相同，在此不再详述。
本发明实施例针对符号单元采用的资源映射模式变化的情况，基于各个符号单元采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效符号单元的数量，只需要针对作为基准的资源映射模式建立TBS对应表即可在所有资源映射模式下找到等效符号单元的数量对应的TBS，大大节省建表和查表的工作量。同时针对采用空间复用技术向接收设备传输数据的情况，先判断基站分配给接收设备的资源大小是否超过基站可调用时频资源的大小，并基于判断结果采用不同的方式确定TBS，解决TBS对应表在基站分配给接收设备的资源大小超过基站可调用时频资源的大小时无法直接使用的问题。另外，基于接收设备的MCS、分配给接收设备的符号单元数量确定TBS，并基于确定的TBS生成TB，由于符号单元数量随符号长度的变化而变化，因此当符号长度变化时，确定的TBS可以随之变化，基于确定的TBS生成的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在符号长度变化的情况下生成TB。
需要说明的是，上述步骤401e可由图2所示的基站中处理器332执行存储器331中的确定模块331b来实现；上述步骤402e可由图2所示的基站中处理器332执行存储器331中的生成模块331c来实现。
图8f示出了本申请一示例性实施例提供的又一种生成TB的方法的流程图。图8f所示的实施例与图8e所示的实施例的不同之处在于，确定等效符号单元的数量的方式不同。如图8f所示，该方法包括：
步骤401f：基于接收设备的MCS、分配给接收设备的符号单元数量确定TBS。
在本实施例中，MCS和符号单元的定义以及确定方法可以与图8a所示的实施例相同，在此不再详述。
具体地，该步骤401f可以包括：
步骤401fa：基于接收设备的MCS确定TBS索引值。
步骤401fb：基于所有符号单元采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效符号单元的数量。
步骤401fc：判断等效符号单元的数量是否大于符号单元阈值。当等效符号单元的数量小于或等于符号单元阈值时，执行步骤401fd；当等效符号单元的数量大于符号单元阈值时，执行步骤401fe-步骤401ff。
步骤401fd：基于确定的TBS索引值、等效符号单元的数量与空间复用的层数的乘积确 定TBS。
步骤401fe：基于确定的TBS索引值、等效符号单元的数量确定第一层的TBS。
步骤401ff：基于空间复用的层数、第一层的TBS确定TBS。
具体地，该步骤401fa可以与图5a所示的实施例中的步骤201aa相同，在此不再详述。该步骤401fb可以与图8c所示的实施例中的步骤401cb相同，在此也不再详述。符号单元阈值可以按照图8d所示的实施例提供的方式确定，在此也不再详述。该步骤401fd可以与图8e所示的实施例中的步骤301ed相同，在此不再详述。该步骤401fe可以与图8e所示的实施例中的步骤301ee相同，在此不再详述。该步骤401ff可以与图8d所示的实施例中的步骤301de相同，在此不再详述。
步骤402f：基于确定的TBS生成TB。
具体地，该步骤402f可以与图5a所示的实施例中的步骤202a相同，在此不再详述。
本发明实施例针对符号单元采用的资源映射模式变化的情况，基于所有符号单元采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定等效符号单元的数量，只需要针对作为基准的资源映射模式建立TBS对应表即可在所有资源映射模式下找到等效符号单元的数量对应的TBS，大大节省建表和查表的工作量。同时针对采用空间复用技术向接收设备传输数据的情况，先判断基站分配给接收设备的资源大小是否超过基站可调用时频资源的大小，并基于判断结果采用不同的方式确定TBS，解决TBS对应表在基站分配给接收设备的资源大小超过基站可调用时频资源的大小时无法直接使用的问题。另外，基于接收设备的MCS、分配给接收设备的符号单元数量确定TBS，并基于确定的TBS生成TB，由于符号单元数量随符号长度的变化而变化，因此当符号长度变化时，确定的TBS可以随之变化，基于确定的TBS生成的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在符号长度变化的情况下生成TB。
需要说明的是，上述步骤401f可由图2所示的基站中处理器332执行存储器331中的确定模块331b来实现；上述步骤402f可由图2所示的基站中处理器332执行存储器331中的生成模块331c来实现。
图9a示出了本申请一示例性实施例提供的又一种生成TB的方法的流程图。图9a所示的实施例与图5a所示的实施例的不同之处在于，分配给接收设备的时频资源包括一个或多个RE。当TTI长度变化时，分配给接收设备的时频资源的RE数量随之变化。如图9a所示，该方法包括：
步骤501a：基于接收设备的MCS、分配给接收设备的RE数量确定TBS。
在实际应用中，MCS的确定、以及时频资源的分配均可以与图5a所示的实施例相同，在此不再详述。如果时频资源以资源块对为单位分配给接收设备，则采用如下公式(9)计算TTI单元的数量：
NRE＝NRB×LSymbol；    (9)
其中，NRE为RE数量，NRB为分配给接收设备的时频资源的RB数量，LSymbol为RB内包含的符号数量。
由公式(9)可知，当RB内包含的符号数量时，RE数量随之变化。
具体地，该步骤501a可以包括：
步骤501aa：基于接收设备的MCS确定TBS索引值。
步骤501ab：基于确定的TBS索引值、分配给接收设备的RE数量确定TBS。
具体地，该步骤501aa可以与图5a所示的实施例中的步骤201aa相同，在此不再详述。
可选地，该步骤501ab可以包括：
在TBS对应表中，根据确定的TBS索引值、分配给接收设备的RE数量查找对应的TBS。
在本实施例中，TBS对应表用于表示TBS索引值、RE数量、以及TBS之间的对应关系。例如，TBS对应表可以如下表九所示：
表九
Figure PCTCN2017078186-appb-000015
步骤502a：基于确定的TBS生成TB。
具体地，该步骤502a可以与图5a所示的实施例中的步骤202a相同，在此不再详述。
本发明实施例基于接收设备的MCS、分配给接收设备的RE数量确定TBS，并基于确定的TBS生成TB，由于RE数量随TTI长度的变化而变化，因此当TTI长度变化时，确定的TBS可以随之变化，基于确定的TBS生成的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在TTI长度变化的情况下生成TB。
需要说明的是，上述步骤501a可由图2所示的基站中处理器332执行存储器331中的确定模块331b来实现；上述步骤502a可由图2所示的基站中处理器332执行存储器331中的生成模块331c来实现。
图9b示出了本申请一示例性实施例提供的又一种生成TB的方法的流程图。图9b所示的实施例与图9a所示的实施例的不同之处在于，采用空间复用技术向接收设备传输数据，即向接收设备传输的数据承载在多层相同的时频资源上。如图9b所示，该方法包括：
步骤501b：基于接收设备的MCS、分配给接收设备的RE数量确定TBS。
在本实施例中，MCS和RE的定义以及确定方法可以与图9a所示的实施例相同，在此不再详述。
具体地，该步骤501b可以包括：
步骤501ba：基于接收设备的MCS确定TBS索引值。
步骤501bb：判断分配给接收设备的RE数量是否大于RE阈值。当RE数量小于或等于RE阈值时，执行步骤501bc；当RE数量大于RE阈值时，执行步骤501bd-步骤501be。
步骤501bc：基于确定的TBS索引值、分配给接收设备的RE数量与空间复用的层数的乘积确定TBS。
步骤501bd：基于确定的TBS索引值、分配给接收设备的RE数量确定第一层的TBS。
步骤501be：基于空间复用的层数、第一层的TBS确定TBS。
如图5d所示的实施例所述，TBS对应表是根据基站可调用时频资源的大小建立的。当采用空间复用技术时，传输的数据承载在多层相同的时频资源上，分配给接收设备的时频资源空间复用之后的大小可能超过基站可调用时频资源的大小，因此当采用空间复用技术时，先判断基站分配给接收设备的资源大小是否超过基站可调用时频资源的大小，并基于判断结果采用不同的方式确定TBS。RE阈值可以根据空间复用的层数、基站可调用时频资源大小设定。例如，基站可调用时频资源为100个RE，空间复用的层数为两层，则RE阈值为100/2＝50。另外，当分配给接收设备的RE数量大于基站可调用时频资源大小时，基站无法实现数据的传输，直接结束，不进行TBS的确定和TB的生成。
具体地，该步骤501ba可以与图5a所示的实施例中的步骤201aa相同，在此不再详述。该501be可以与图5d所示的实施例中的步骤201de相同，在此不再详述。
可选地，该步骤501bc可以包括：
在TBS对应表中，根据确定的TBS索引值、分配给接收设备的RE数量与空间复用的层数的乘积查找对应的TBS。
可选地，该步骤501bd可以包括：
在TBS对应表中，根据确定的TBS索引值、分配给接收设备的RE数量查找对应的TBS，并将找到的TBS作为第一层的TBS。
步骤502b：基于确定的TBS生成TB。
具体地，该步骤502b可以与图5a所示的实施例中的步骤202a相同，在此不再详述。
本发明实施例针对采用空间复用技术向接收设备传输数据的情况，先判断基站分配给接收设备的资源大小是否超过基站可调用时频资源的大小，并基于判断结果采用不同的方式确定TBS，解决TBS对应表在基站分配给接收设备的资源大小超过基站可调用时频资源的大小时无法直接使用的问题。同时基于接收设备的MCS、分配给接收设备的RE数量确定TBS，并基于确定的TBS生成TB，由于RE数量随TTI长度的变化而变化，因此当TTI长度变化时，确定的TBS可以随之变化，基于确定的TBS生成的TB可以避免造成时频资源浪费和纠错性能较差以达到业务需要，适用于在TTI长度变化的情况下生成TB。
需要说明的是，上述步骤501b可由图2所示的基站中处理器332执行存储器331中的确定模块331b来实现；上述步骤502b可由图2所示的基站中处理器332执行存储器331中的生成模块331c来实现。
图10示出了本申请一示例性实施例提供的一种生成TB的装置的结构示意图。该装置 可以通过软件、硬件或者两者的结合实现成为基站的全部或者一部分，以实现图5a-图5f、图7a-图7f、图8a-图8f、图9a-图9b中任一个图提供的生成TB的方法。该装置包括确定单元601、生成单元602。
其中，确定单元601用于执行图5a所示的实施例中的步骤201a，生成单元602用于执行图5a所示的实施例中的步骤202a。
或者，确定单元601用于执行图5b所示的实施例中的步骤201b，生成单元602用于执行图5b所示的实施例中的步骤202b。
或者，确定单元601用于执行图5c所示的实施例中的步骤201c，生成单元602用于执行图5c所示的实施例中的步骤202c。
或者，确定单元601用于执行图5d所示的实施例中的步骤201d，生成单元602用于执行图5d所示的实施例中的步骤202d。
或者，确定单元601用于执行图5e所示的实施例中的步骤201e，生成单元602用于执行图5e所示的实施例中的步骤202e。
或者，确定单元601用于执行图5f所示的实施例中的步骤201f，生成单元602用于执行图5f所示的实施例中的步骤202f。
或者，确定单元601用于执行图7a所示的实施例中的步骤301a，生成单元602用于执行图7a所示的实施例中的步骤302a。
或者，确定单元601用于执行图7b所示的实施例中的步骤301b，生成单元602用于执行图7b所示的实施例中的步骤302b。
或者，确定单元601用于执行图7c所示的实施例中的步骤301c，生成单元602用于执行图7c所示的实施例中的步骤302c。
或者，确定单元601用于执行图7d所示的实施例中的步骤301d，生成单元602用于执行图7d所示的实施例中的步骤302d。
或者，确定单元601用于执行图7e所示的实施例中的步骤301e，生成单元602用于执行图7e所示的实施例中的步骤302e。
或者，确定单元601用于执行图7f所示的实施例中的步骤301f，生成单元602用于执行图7f所示的实施例中的步骤302f。
或者，确定单元601用于执行图8a所示的实施例中的步骤401a，生成单元602用于执行图8a所示的实施例中的步骤402a。
或者，确定单元601用于执行图8b所示的实施例中的步骤401b，生成单元602用于执行图8b所示的实施例中的步骤402b。
或者，确定单元601用于执行图8c所示的实施例中的步骤401c，生成单元602用于执行图8c所示的实施例中的步骤402c。
或者，确定单元601用于执行图8d所示的实施例中的步骤401d，生成单元602用于执行图8d所示的实施例中的步骤402d。
或者，确定单元601用于执行图8e所示的实施例中的步骤401e，生成单元602用于执行图8e所示的实施例中的步骤402e。
或者，确定单元601用于执行图8f所示的实施例中的步骤401f，生成单元602用于执行图8f所示的实施例中的步骤402f。
或者，确定单元601用于执行图9a所示的实施例中的步骤501a，生成单元602用于执行图9a所示的实施例中的步骤502a。
或者，确定单元601用于执行图9b所示的实施例中的步骤501b，生成单元602用于执行图9b所示的实施例中的步骤502b。
由于本发明实施例提供的生成TB的装置与上述任一实施例提供的生成TB的方法具有相同的技术特征，所以也能解决同样的技术问题，产生相同的技术效果。
需要说明的是：上述实施例提供的生成TB的装置在生成TB时，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。另外，上述实施例提供的生成TB的装置与生成TB的方法实施例属于同一构思，其具体实现过程详见方法实施例，这里不再赘述。
上述本发明实施例序号仅仅为了描述，不代表实施例的优劣。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述仅为本申请的可选实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (16)

  1. 一种生成传输块的方法，其特征在于，所述方法包括：
    基于接收设备的调制与编码策略MCS、分配给所述接收设备的资源块RB的资源特征和符号数量确定传输块TB的大小TBS，其中，所述符号数量为每个所述RB内包含的符号数量，各个所述RB包含的符号数量相同；
    基于所述TBS生成所述TB。
  2. 如权利要求1所述的方法，其特征在于，所述基于接收设备的MCS、分配给所述接收设备的RB的资源特征和符号数量确定TBS，具体包括：
    基于所述MCS确定TBS索引值；
    基于所述TBS索引值、所述RB的资源特征和所述符号数量确定所述TBS。
  3. 如权利要求2所述的方法，其特征在于，所述RB的资源特征为所述RB的数量。
  4. 如权利要求2所述的方法，其特征在于，所述RB的资源特征为等效RB的数量，所述等效RB的数量与所述RB的资源利用率相关联，所述RB的资源利用率为所述RB内数据占用的资源粒RE数量与所述RB占用的RE数量之间的比值。
  5. 如权利要求4所述的方法，其特征在于，所述基于所述TBS索引值、所述RB的资源特征和所述符号数量确定所述TBS，具体包括：
    基于各个RB采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定所述等效RB的数量；
    基于所述TBS索引值、所述等效RB的数量和所述符号数量确定所述TBS。
  6. 如权利要求4所述的方法，其特征在于，所述基于所述TBS索引值、所述RB的资源特征和所述符号数量确定所述TBS，具体包括：
    基于所有RB采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定所述等效RB的数量；
    基于所述TBS索引值、所述等效RB的数量和所述符号数量确定所述TBS。
  7. 如权利要求2所述的方法，其特征在于，所述RB的资源特征为所述RB的数量与空间复用层数的乘积。
  8. 如权利要求7所述的方法，其特征在于，所述基于所述TBS索引值、所述RB的资源特征和所述符号数量确定所述TBS，具体包括：
    判断所述RB的数量是否大于RB阈值；
    当所述RB的数量小于或等于所述RB阈值时，基于所述TBS索引值、所述RB的数量与所述空间复用层数的乘积、以及所述符号数量确定所述TBS；
    当所述RB的数量大于所述RB阈值时，基于所述TBS索引值、所述RB的资源特征和所述符号数量确定第一层的TBS；基于所述空间复用的层数、第一层的TBS确定所述TBS。
  9. 一种生成传输块的装置，其特征在于，所述装置包括：
    确定单元，用于基于接收设备的调制与编码策略MCS、分配给所述接收设备的资源块RB的资源特征和符号数量确定传输块TB的大小TBS，其中，所述符号数量为每个所述RB内包含的符号数量，各个所述RB包含的符号数量相同；
    生成单元，用于基于所述TBS生成所述TB。
  10. 如权利要求9所述的装置，其特征在于，所述确定单元具体用于，
    基于所述MCS确定TBS索引值；
    基于所述TBS索引值、所述RB的资源特征和所述符号数量确定所述TBS。
  11. 如权利要求10所述的装置，其特征在于，所述RB的资源特征为所述RB的数量。
  12. 如权利要求10所述的装置，其特征在于，所述RB的资源特征为等效RB的数量，所述等效RB的数量与所述RB的资源利用率相关联，所述RB的资源利用率为所述RB内数据占用的资源粒RE数量与所述RB占用的RE数量之间的比值。
  13. 如权利要求12所述的装置，其特征在于，所述确定单元具体用于，
    基于各个RB采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定所述等效RB的数量；
    基于所述TBS索引值、所述等效RB的数量和所述符号数量确定所述TBS。
  14. 如权利要求12所述的装置，其特征在于，所述确定单元具体用于，
    基于所有RB采用的资源映射模式与作为基准的资源映射模式传输数据大小的比值，确定所述等效RB的数量；
    基于所述TBS索引值、所述等效RB的数量和所述符号数量确定所述TBS。
  15. 如权利要求10所述的装置，其特征在于，所述RB的资源特征为所述RB的数量与空间复用层数的乘积。
  16. 如权利要求15所述的装置，其特征在于，所述确定单元具体用于，
    判断所述RB的数量是否大于RB阈值；
    当所述RB的数量小于或等于所述RB阈值时，基于所述TBS索引值、所述RB的数量与所述空间复用层数的乘积、以及所述符号数量确定所述TBS；
    当所述RB的数量大于所述RB阈值时，基于所述TBS索引值、所述RB的资源特征和所述符号数量确定第一层的TBS；基于所述空间复用的层数、第一层的TBS确定所述TBS。
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Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2735383C1 (ru) * 2017-01-05 2020-10-30 Гуандун Оппо Мобайл Телекоммьюникейшнс Корп., Лтд. Способ передачи данных, оконечное устройство и сетевое устройство
US11399309B2 (en) * 2017-05-05 2022-07-26 Telefonaktiebolaget Lm Ericsson (Publ) Transmission block size determination
CN109803426B (zh) * 2017-11-17 2023-04-07 华为技术有限公司 传输数据的方法和装置
CN110611549B (zh) * 2018-06-15 2021-04-09 华为技术有限公司 一种确定传输块大小的方法、传输方法及装置
EP3923494A4 (en) * 2019-03-05 2022-03-16 Huawei Technologies Co., Ltd. TRANSPORT BLOCK SIZING METHOD AND COMMUNICATION APPARATUS
CN111669251B (zh) * 2019-03-05 2022-07-22 华为技术有限公司 传输块大小的确定方法及通信装置
WO2020199044A1 (zh) * 2019-03-29 2020-10-08 华为技术有限公司 一种tbs的确定方法及装置
CN110536453B (zh) * 2019-09-16 2023-09-26 中兴通讯股份有限公司 数据传输方法、装置和系统
WO2021097625A1 (zh) * 2019-11-18 2021-05-27 华为技术有限公司 信道确定的方法和通信装置
WO2021159270A1 (zh) * 2020-02-11 2021-08-19 北京小米移动软件有限公司 数据传输方法、数据传输装置及存储介质
CN113824533A (zh) * 2020-06-19 2021-12-21 中兴通讯股份有限公司 确定调制编码方式mcs的方法、设备和存储介质

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011111961A2 (en) * 2010-03-07 2011-09-15 Lg Electronics Inc. Method and apparatus for determining size of transport block transmitted by base station to relay node in radio communication system
CN104038970A (zh) * 2013-03-05 2014-09-10 电信科学技术研究院 一种通信处理方法及设备

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2454807C2 (ru) * 2006-05-19 2012-06-27 Панасоник Корпорейшн Радиопередающее устройство и способ радиопередачи
EP2635082A1 (en) * 2012-02-29 2013-09-04 Panasonic Corporation Dynamic subframe bundling
EP2639983A1 (en) * 2012-03-16 2013-09-18 Panasonic Corporation MCS table adaptation for low power ABS
CN103733584A (zh) * 2012-05-11 2014-04-16 华为技术有限公司 数据传输方法和设备
CN103795509A (zh) 2012-11-02 2014-05-14 北京三星通信技术研究有限公司 一种传输harq指示信息的方法和设备
US20150195819A1 (en) * 2014-01-06 2015-07-09 Intel IP Corporation Systems and methods for modulation and coding scheme selection and configuration
KR102316775B1 (ko) * 2015-04-02 2021-10-26 삼성전자 주식회사 무선 셀룰라 통신 시스템에서 전송시간구간 감소를 위한 송수신 방법 및 장치
KR102068568B1 (ko) * 2015-05-08 2020-01-21 엘지전자 주식회사 기계타입통신을 지원하는 무선 접속 시스템에서 기계타입통신 단말을 위해 정의되는 전송블록크기를 이용한 데이터를 송수신하는 방법 및 장치
US10123233B2 (en) * 2016-01-18 2018-11-06 Softbank Corp. Base station apparatus and communication system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011111961A2 (en) * 2010-03-07 2011-09-15 Lg Electronics Inc. Method and apparatus for determining size of transport block transmitted by base station to relay node in radio communication system
CN104038970A (zh) * 2013-03-05 2014-09-10 电信科学技术研究院 一种通信处理方法及设备

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
HUAWEI ET AL.: "TBS determination for short TTI", 3GPP TSG RAN WG1 MEETING #87 RENO, RL-1611877, 18 November 2016 (2016-11-18), XP051175844 *
KT CORP: "Views on TBS determination for Rel-13 MTC", 3GPP TSG RAN WG1 MEETING #82BIS , R1-156028, 9 October 2015 (2015-10-09), XP051002769 *
See also references of EP3439361A4 *

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