WO2017195653A1 - 無線通信装置及び無線通信方法 - Google Patents
無線通信装置及び無線通信方法 Download PDFInfo
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- WO2017195653A1 WO2017195653A1 PCT/JP2017/016911 JP2017016911W WO2017195653A1 WO 2017195653 A1 WO2017195653 A1 WO 2017195653A1 JP 2017016911 W JP2017016911 W JP 2017016911W WO 2017195653 A1 WO2017195653 A1 WO 2017195653A1
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- data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/40—Network security protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
Definitions
- the present invention relates to a wireless communication apparatus and a wireless communication method in a wireless communication system.
- 5G next-generation system
- LTE Long Term Evolution
- 5G three use cases of eMBB (extended Mobile Broadband), mMTC (massiveachMachine Type Communication), and URLLC (Ultra Reliability and Low Latency Communication) are assumed (see Non-Patent Document 1).
- URLLC aims to realize wireless communication with low delay and high reliability.
- introduction of a Short TTI length also referred to as a subframe length or a subframe interval
- a reduction in control delay from packet generation to data transmission are being studied.
- introduction of a coding method and a modulation method with a low coding rate for realizing a low bit error rate, utilization of diversity, and the like are being studied.
- mission critical MTC Machine Type Communication
- telemedicine and vehicle behavior control for accident prevention is mainly assumed.
- This kind of highly urgent data may occur during the transmission of other data.
- a URLLC data packet is generated during transmission of eMBB data.
- transmission of highly urgent data for example, URLLC
- other data for example, eMBB
- An object of the present invention is to transmit highly urgent data with low delay while reducing interference between highly urgent data and other data.
- a wireless communication apparatus is a wireless communication apparatus that functions as a transmitter in a wireless communication system including a transmitter and a receiver, A first data generation unit that generates first data transmitted by the first transmission method; A second data generation unit that generates second data transmitted by the second transmission method; Of the resources allocated for transmission of the first data, a portion where a predetermined signal is transmitted is punctured, the first data is transmitted in a portion that is not punctured, and the second portion is transmitted in a portion that is punctured
- a transmitter for transmitting the data of It is characterized by having.
- FIG. 1 is a schematic diagram illustrating a wireless communication system according to an embodiment of the present invention. Schematic showing an example of transmitting URLLC data during transmission of eMBB data
- FIG. 2 is a sequence diagram of a wireless communication method in a wireless communication system according to an embodiment of the present invention. Schematic showing Example 1 of puncturing eMBB data Schematic showing Example 2 of puncturing eMBB data Schematic showing Example 3 of puncturing eMBB data
- the block diagram which shows the function structure of the transmitter which concerns on the Example of this invention.
- the block diagram which shows the function structure of the receiver which concerns on the Example of this invention
- the wireless communication device that is a transmitter transmits the second data transmitted by the second transmission method (for example, URLLC) during the transmission of the first data transmitted by the first transmission method (for example, eMBB). Is generated, the portion of the resource allocated for transmission of the first data is punctured in the portion where the predetermined signal is transmitted, the first data is transmitted in the portion that is not punctured, and the portion that is punctured To transmit the second data.
- the second transmission method for example, URLLC
- the first transmission method for example, eMBB
- the predetermined signal to be punctured may be a signal having a low importance for the first transmission scheme
- the signal not to be punctured may be a signal having a high importance for the first transmission scheme.
- the wireless communication apparatus as a receiver detects that the second data transmitted by the second transmission method is transmitted in the punctured portion, and receives the first data in the non-punctured portion. The second data is received in the punctured part. In this way, the wireless communication device can transmit the second data with low delay.
- eMBB and URLLC will be described as examples of the first transmission method and the second transmission method, respectively. However, eMBB, URLLC, and mMTC are used as the first transmission method and the second transmission method, respectively.
- LTE has a wide meaning including not only a communication method corresponding to Release 8 or 9 of 3GPP but also a fifth generation communication method corresponding to Release 10, 11, 12, 13, or Release 14 or later of 3GPP. use.
- eMBB data data transmitted by eMBB
- URLLC data data transmitted by URLLC
- FIG. 1 is a schematic diagram illustrating a configuration example of a wireless communication system according to an embodiment of the present invention.
- wireless communications system which concerns on the Example of this invention has the base station eNB and the mobile station UE.
- the base station eNB and the mobile station UE are illustrated, but a plurality of base stations eNB may be included or a plurality of mobile stations UE may be included.
- the base station eNB can accommodate one or a plurality of (for example, three) cells (also called sectors). When the base station eNB accommodates multiple cells, the entire coverage area of the base station eNB can be partitioned into multiple smaller areas, each smaller area being a base station subsystem (e.g., an indoor small base station RRH). : Remote Radio Head) can provide communication services.
- the term “cell” or “sector” refers to part or all of the coverage area of a base station and / or base station subsystem that provides communication services in this coverage. Further, the terms “base station”, “eNB”, “cell”, and “sector” may be used interchangeably herein.
- the base station eNB may be referred to by terms such as a fixed station (fixed station), a NodeB, an eNodeB (eNB), an access point (access point), a femto cell, and a small cell.
- the mobile station UE is defined by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, It may also be referred to as a wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other appropriate terminology.
- the base station eNB and the mobile station UE perform downlink (DL: Downlink) and uplink (UL: Uplink) communication using a predetermined band.
- the predetermined band may be an LTE system band (for example, 20 MHz), or may be a narrower band (for example, 1.4 MHz or 180 kHz) than the LTE system band.
- the mobile station UE needs to perform a cell search in order to communicate with the base station eNB.
- the signal used for the cell search is called a synchronization signal (SS: Synchronization Signal), and the synchronization signal mainly includes PSS (Primary Synchronization Signal) for the purpose of symbol timing synchronization and local ID detection, and mainly a radio frame.
- PSS Primary Synchronization Signal
- SSS Secondary Synchronization Signal
- broadcast information Basic information that the mobile station UE should read after cell search is called broadcast information, and includes MIB (Master Information Block) including system bandwidth and system frame number, and SIB (System Information Block) that is other system information. Is included.
- SIB may be transmitted on a downlink data channel described later.
- the mobile station UE receives downlink control information (DCI: Downlink Control Information) using a downlink control channel arranged in a predetermined band, and the downlink control channel is PDCCH (Physical Downlink Control Channel) or ePDCCH (enhanced). Physical Downlink Control ⁇ ⁇ Channel).
- DCI Downlink Control Information
- PDCCH Physical Downlink Control Channel
- ePDCCH enhanced Physical Downlink Control ⁇ ⁇ Channel
- PCFICH Physical Control Format Format Indicator Channel
- PCFICH Physical Control Format Indicator Channel
- PCFICH, PDCCH, and ePDCCH may be referred to as L1 / L2 control signals.
- the mobile station UE receives downlink data using a downlink shared channel (downlink data channel) arranged in a predetermined band, and the downlink shared channel may be called PDSCH (Physical (Downlink Shared Channel). Good.
- PDSCH Physical (Downlink Shared Channel).
- acknowledgment information (ACK / NACK) is transmitted for the uplink data channel, but the acknowledgment information may be referred to as UL A / N or PHICH (Physical HARQ Indicator Channel). Also good.
- a data demodulation reference signal is used for channel estimation, symbol timing synchronization, reception quality measurement, etc. for demodulating the data signal.
- the reference signal may be abbreviated as RS (Reference Signal), and may be referred to as a pilot depending on an applied standard.
- the data demodulation reference signal includes DMRS (Demodulation Reference Signal) and CRS (Cell-specific Reference Signal).
- CSI-RS Channel State Information Reference Signal
- the mobile station UE transmits uplink data using an uplink shared channel (uplink data channel) arranged in a predetermined band, and the uplink shared channel may be referred to as PUSCH (Physical-Uplink-Shared Channel).
- uplink shared channel uplink data channel
- PUSCH Physical-Uplink-Shared Channel
- acknowledgment information (ACK / NACK) is transmitted to the downlink data channel, but the acknowledgment information may be referred to as DL A / N.
- the mobile station UE may transmit an SR (Scheduling Request) in order to request the base station eNB to allocate an uplink data channel.
- SR Service Request
- the mobile station UE that has received the CSI-RS may transmit CSI (Channel State Information) in order to transmit quality measurement information to the base station.
- CSI Channel State Information
- a data demodulation reference signal is used for channel estimation, symbol timing synchronization, reception quality measurement, etc. for demodulating the data signal.
- the data demodulation reference signal may be referred to as DMRS (Demodulation Reference Signal).
- SRS Solid Reference Signal
- the L1 / L2 control signal may be used in the uplink signal.
- the above channels and signals are examples in LTE, and names different from the above names may be used.
- a radio frame may be composed of one or more frames in the time domain. Each frame or frames in the time domain may be referred to as a subframe. A subframe may further be composed of one or more slots in the time domain. A slot may further be composed of one or more symbols (OFDM symbols, SC-FDMA symbols, etc.) in the time domain. Each of the radio frame, subframe, slot, and symbol represents a time unit for transmitting a signal. Radio frames, subframes, slots, and symbols may be called differently corresponding to each.
- the base station performs scheduling for allocating radio resources (frequency bandwidth, transmission power, etc. that can be used in each mobile station) to each mobile station.
- the minimum time unit of scheduling may be called TTI (Transmission Time Interval).
- TTI Transmission Time Interval
- one subframe may be called a TTI
- a plurality of consecutive subframes may be called a TTI
- one slot may be called a TTI.
- the resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or a plurality of continuous subcarriers in the frequency domain.
- one or a plurality of symbols may be included, and one slot, one subframe, or a length of 1 TTI may be included.
- One TTI and one subframe may each be composed of one or a plurality of resource blocks.
- the structure of the radio frame described above is merely an example, and the number of subframes included in the radio frame, the number of slots included in the subframe, the number of symbols and resource blocks included in the slots, and the subframes included in the resource block The number of carriers can be variously changed.
- URLLC data with a high degree of urgency is generated while the mobile station UE or the base station eNB transmits eMBB data.
- a part of resources allocated to eMBB transmission is punctured, and URLLC data is transmitted in the punctured part.
- FIG. 2 is a schematic diagram illustrating an example of transmitting URLLC data during transmission of eMBB data.
- FIG. 2 shows a case where URLLC data corresponding to a transmission period of 2 symbols is generated during transmission of eMBB data corresponding to a transmission period of 20 symbols.
- a resource corresponding to a transmission period of 2 symbols allocated to eMBB is punctured, and URLLC data is transmitted in the punctured portion.
- Puncture means that a signal is not transmitted in a part of resources allocated for signal transmission. For example, as shown in FIG. 2, the puncture may not transmit all or a part of eMBB symbols. In this case, URLLC symbols are transmitted instead of all or part of eMBB symbols that are not transmitted. In the following description, an example in which all or some of the symbols are not transmitted will be described.
- puncturing can be realized by other methods. For example, puncturing may be realized by overriding information bits of eMBB with information bits of URLLC. In this case, a part of the segment before encoding the eMBB data is used for URLLC. As another example, puncturing may be realized by changing the modulation order of eMBB data.
- the modulation method of eMBB data may be changed from QPSK (2 bits) to 16QAM (4 bits), and the URLLC signal may be embedded in the surplus 2 bits.
- the modulation order of the eMBB data may not be changed, and a part of the bits may be shared between the eMBB data and the URLLC data.
- the modulation method is QPSK
- the first half of 2 bits that can be transmitted may be used for eMBB
- the second half may be used for URLLC.
- the bit of eMBB interrupted by URLLC is punctured.
- puncturing eMBB data and interrupting URLLC data puncturing a signal having high importance for eMBB may degrade the signal detection accuracy or frequency utilization efficiency of eMBB data. For this reason, in the embodiment of the present invention, a signal having high importance for eMBB is not punctured.
- an L1 / L2 control signal (PCFICH, PDCCH, ePDCCH), broadcast information ( MIB, SIB), synchronization signals (PSS, SSS), data demodulation reference signals (DMRS, CRS), and UL A / N (PHICH) may be classified as signals that cannot be punctured, and data signals (PDSCH),
- the quality measurement reference signal (CSI-RS) may be classified as a signal that may be punctured. For example, when a part of the data signal (PDSCH) is punctured, the data signal can be transmitted at a part that is not punctured by increasing the coding rate.
- the quality measurement reference signal (CSI-RS) If some are punctured, these signals may be considered less important for eMBB because they can be substituted with quality measurement reference signals transmitted in other subframes.
- the quality measurement reference signal (CSI-RS) is punctured, the mobile station UE may be prohibited from measuring the channel quality using the punctured quality measurement reference signal.
- the L1 / L2 control signal, the data demodulation reference signal (DMRS), DL A / N, and SR may be classified as signals that cannot be punctured, and the data signal (PUSCH), CSI, and
- the quality measurement reference signal (SRS) may be classified as a signal that may be punctured. For example, when a part of the data signal (PUSCH) is punctured, it is possible to transmit the data signal at an unpunctured part by increasing the coding rate. For example, the CSI and the quality measurement reference signal (SRS) If some are punctured, these signals may be considered less important for eMBB because they can be substituted with signals transmitted in other subframes.
- the quality measurement reference signal (SRS) is punctured, the base station eNB may be prohibited from measuring the channel quality using the punctured quality measurement reference signal.
- the coding rate of punctured eMBB data becomes a value that is difficult to detect in a realistic environment (for example, 0.931 defined by LTE)
- transmission of URLLC data by puncturing of the eMBB data is prohibited.
- the eMBB data may be punctured so as not to exceed the coding rate, and the URLLC data coding rate may be adjusted and transmitted.
- FIG. 3 is a sequence diagram of a wireless communication method in the wireless communication system according to the embodiment of the present invention.
- the base station eNB may notify (for example, broadcast) to the mobile station UE a signal that cannot be punctured and / or a signal that may be punctured (S101). Signals that cannot be punctured and / or signals that may be punctured may be classified based on whether they are more or less important for eMBB as described above.
- the mobile station UE may transmit an SR to the base station eNB and request the base station eNB to allocate resources.
- the base station eNB notifies the mobile station UE of resource allocation, and the mobile station UE may transmit eMBB data over a plurality of symbols (S103, S103 ′,).
- the mobile station UE punctures a portion allocated to a signal that may be punctured among resources allocated for transmission of eMBB data (S105).
- FIG. 4A to 4C show examples of puncturing eMBB data.
- 6-symbol URLLC data is generated during transmission of eMBB data.
- the mobile station UE punctures resources necessary for transmitting 6-symbol URLLC data among the resources allocated to the eMBB data.
- FIG. 4A when there is no signal that cannot be punctured in a resource to which URLLC data is to be transmitted, the mobile station UE punctures a resource of 6 symbols and transmits URLLC data in the punctured portion.
- the mobile station UE when there is a signal (for example, DMRS) that cannot be punctured in the resource to which URLLC data is to be transmitted, the mobile station UE does not change the transmission resource amount of the URLLC data and the resource of the signal that cannot be punctured. , Puncture 6 symbol resources and transmit URLLC data in the punctured part. In this case, resources of URLLC data can be secured, but resources of eMBB data are reduced.
- DMRS for example, DMRS
- the mobile station UE when there is a signal that cannot be punctured (for example, DMRS) in the resource to which URLLC data is to be transmitted, the mobile station UE avoids the resource of the signal that cannot be punctured, for example, a resource of 4 symbols. Puncture. Then, rate matching of URLLC data is performed to increase the encoding rate of 6-symbol URLLC data so that it can be transmitted with 4 symbols. As a result, the number of symbols of the punctured eMBB data can be reduced to the minimum. In this case, eMBB data resources can be secured, but the encoding rate of URLLC data increases.
- DMRS signal that cannot be punctured
- eMBB data when the coding rate of punctured eMBB data is higher than the threshold, transmission of URLLC data by puncturing of the eMBB data may be prohibited.
- the eMBB data may be punctured so as not to exceed the threshold, and the encoding rate of the URLLC data may be adjusted and transmitted.
- the mobile station UE transmits URLLC data in the punctured part (S107).
- the mobile station UE may transmit URLLC data over a plurality of symbols (S107, S107 ′,).
- the mobile station UE may request a resource for transmitting the URLLC data from the base station eNB, may transmit the URLLC data using the resource allocated by the base station eNB, and may use the resource for transmitting the URLLC data.
- the URLLC data may be transmitted without requesting the base station eNB.
- the base station eNB When the base station eNB allocates URLLC data resources, the base station eNB can receive URLLC data in the allocated resources. On the other hand, when the base station eNB does not allocate the resource of the URLLC data, the base station eNB needs to detect that the URLLC data is embedded and transmitted during the transmission of the eMBB data. For example, a candidate in which URLLC data is embedded may be defined in advance, and the base station eNB may perform detection by performing blind estimation within the candidate. In this case, detection may be performed using a URLLC CRC (Cyclic Redundancy Check), or detection may be performed by adding a preamble for easier detection to URLLC data.
- URLLC CRC Cyclic Redundancy Check
- the mobile station UE may resume the eMBB data transmission (S109, S109 ′,).
- uplink communication from the mobile station UE to the base station eNB is shown.
- the present invention is not limited to uplink communication, and is also applied to downlink communication from the base station eNB to the mobile station UE. Is possible.
- downlink communication instead of requesting the base station eNB for resources for the mobile station UE to transmit eMBB data and / or URLLC data, eMBB data and / or URLLC data is transmitted.
- the present invention is not limited to uplink communication and can also be applied to downlink communication. Therefore, a transmitter that is a device that transmits eMBB data and URLLC data, and eMBB data and URLLC data are received. A receiver that is a device that performs the above will be described.
- FIG. 5 is a configuration diagram of the transmitter 10 according to the embodiment of the present invention.
- the transmitter 10 includes an eMBB data generation unit 101, a URLLC data generation unit 103, and a transmission unit 105.
- the transmitter 10 corresponds to the base station eNB.
- the transmitter 10 notifies the mobile station UE of a signal that cannot be punctured and / or a signal that may be punctured. 107 may be further included.
- the eMBB data generation unit 101 generates data (eMBB data) transmitted by eMBB.
- the eMBB data may be transmitted using resources allocated by the base station eNB according to the SR from the mobile station UE.
- the eMBB data may be transmitted using resources allocated by scheduling in the base station eNB.
- the URLLC data generation unit 103 generates data (URLLC data) transmitted by URLLC.
- the URLLC data may be transmitted using resources allocated by the base station eNB according to the SR from the mobile station UE, without the SR from the mobile station UE. It may be transmitted among predefined resource candidates.
- the eMBB data may be transmitted using resources allocated in the scheduling in the base station eNB, and the resources defined in advance without scheduling in the base station eNB. It may be transmitted among the candidates.
- the transmission unit 105 punctures a portion to which a predetermined signal is transmitted among resources allocated for transmission of eMBB, and eMBB data in a portion that is not punctured And URLL data is transmitted in the punctured portion.
- the predetermined signal to be punctured may be determined based on whether importance is high or low for eMBB.
- FIG. 6 is a configuration diagram of the receiver 20 according to the embodiment of the present invention.
- the receiver 20 includes a detection unit 201 and a reception unit 203.
- the receiver 20 corresponds to the base station eNB.
- the receiver 20 notifies the mobile station UE of a signal that cannot be punctured and / or a signal that may be punctured. 205 may be further included.
- the detection unit 201 detects that a part to which a predetermined signal is transmitted is punctured among resources allocated for transmission of eMBB data, and URLLC data is transmitted in the punctured part.
- the detection unit 201 may detect transmission of URLLC data based on the resource allocation. Further, the detection unit 201 may detect transmission of URLL data by performing blind estimation within a candidate in which URLLC data is embedded.
- the detection unit 201 detects that the quality measurement reference signal has been punctured, channel quality estimation using the punctured quality measurement reference signal may be prohibited.
- the receiving unit 203 receives eMBB data in a non-punctured part and receives URLLC data in a punctured part.
- each functional block is realized by one device physically and / or logically coupled, and two or more devices physically and / or logically separated may be directly and / or indirectly. (For example, wired and / or wireless) and may be realized by these plural devices.
- a transmitter, a receiver, etc. in an embodiment of the present invention may function as a computer that performs processing of the wireless communication method of the present invention.
- FIG. 7 is a diagram illustrating an example of a hardware configuration of a transmitter and a receiver according to an embodiment of the present invention.
- the transmitter 10 and the receiver 20 described above may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. .
- the term “apparatus” can be read as a circuit, a device, a unit, or the like.
- the hardware configuration of the transmitter 10 and the receiver 20 may be configured to include one or a plurality of the devices illustrated in the figure, or may be configured not to include some devices.
- Each function in the transmitter 10 and the receiver 20 is obtained by reading predetermined software (program) on hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs an operation and performs communication by the communication device 1004 and memory. This is realized by controlling data reading and / or writing in the storage 1003 and the storage 1003.
- the processor 1001 controls the entire computer by operating an operating system, for example.
- the processor 1001 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, and the like.
- CPU central processing unit
- the above-described eMBB data generation unit 101, URLLC data generation unit 103, puncture classification notification unit 107, detection unit 201, puncture classification notification unit 205, and the like may be realized by the processor 1001.
- the processor 1001 reads programs (program codes), software modules, and data from the storage 1003 and / or the communication device 1004 to the memory 1002, and executes various processes according to these.
- the program a program that causes a computer to execute at least a part of the operations described in the above embodiments is used.
- the eMBB data generation unit 101 of the transmitter 10 may be realized by a control program stored in the memory 1002 and operated by the processor 1001, and may be realized similarly for other functional blocks.
- the above-described various processes have been described as being executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001.
- the processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via a telecommunication line.
- the memory 1002 is a computer-readable recording medium, and includes, for example, at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), and the like. May be.
- the memory 1002 may be called a register, a cache, a main memory (main storage device), or the like.
- the memory 1002 can store a program (program code), a software module, and the like that can be executed to implement the wireless communication method according to an embodiment of the present invention.
- the storage 1003 is a computer-readable recording medium such as an optical disc such as a CD-ROM (Compact Disc ROM), a hard disc drive, a flexible disc, a magneto-optical disc (eg, a compact disc, a digital versatile disc, a Blu-ray). (Registered trademark) disk, smart card, flash memory (for example, card, stick, key drive), floppy (registered trademark) disk, magnetic strip, and the like.
- the storage 1003 may be referred to as an auxiliary storage device.
- the storage medium described above may be, for example, a database, server, or other suitable medium including the memory 1002 and / or the storage 1003.
- the communication device 1004 is hardware (transmission / reception device) for performing communication between computers via a wired and / or wireless network, and is also referred to as a network device, a network controller, a network card, a communication module, or the like.
- a network device for example, the transmission unit 105 and the reception unit 203 described above may be realized by the communication device 1004.
- the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts an input from the outside.
- the output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that performs output to the outside.
- the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
- each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information.
- the bus 1007 may be configured with a single bus or may be configured with different buses between apparatuses.
- the transmitter 10 and the receiver 20 include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA). Hardware may be configured, and a part or all of each functional block may be realized by the hardware. For example, the processor 1001 may be implemented by at least one of these hardware.
- DSP digital signal processor
- ASIC application specific integrated circuit
- PLD programmable logic device
- FPGA field programmable gate array
- ⁇ Effect of the embodiment of the present invention it is possible to transmit high-urgency data with low delay while reducing interference between high-urgency data and other data.
- the URLLC data can be embedded and transmitted in the eMBB data, and the URLLC data can be transmitted with low delay.
- the receiver can blindly detect that the URLLC data is being transmitted during the transmission of the eMBB data by defining a detection preamble and the like.
- Puncturing may be realized by overriding eMBB information bits with URLLC information bits, in which case the receiver needs to blind detect that URLLC data is being transmitted during the transmission of eMBB data. Disappear. Puncturing may be realized by not transmitting a part of the eMBB data signal by changing the modulation order of the eMBB data. In this case, the eMBB data may not be received. The loss of eMBB data can be eliminated. Puncturing may be realized by changing a modulation order of eMBB data and sharing a part of the bits between eMBB data and URLLC data. In this case, the detection accuracy of eMBB data can be ensured. it can.
- Each aspect / example described in this specification includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G, 5G, FRA (Future Radio Access), W-CDMA.
- LTE Long Term Evolution
- LTE-A Long Term Evolution-Advanced
- SUPER 3G IMT-Advanced
- 4G 5G
- FRA Full Radio Access
- W-CDMA Wideband
- GSM registered trademark
- CDMA2000 Code Division Multiple Access 2000
- UMB User Mobile Broadband
- IEEE 802.11 Wi-Fi
- IEEE 802.16 WiMAX
- IEEE 802.20 UWB (Ultra-WideBand
- the present invention may be applied to a Bluetooth (registered trademark), a system using another appropriate system, and / or a next generation system extended based on the system.
- system and “network” used in this specification are used interchangeably.
- the specific operation assumed to be performed by the base station in the present specification may be performed by the upper node in some cases.
- various operations performed for communication with the terminal may be performed by the base station and / or other network nodes other than the base station (e.g., Obviously, this may be done by MME or S-GW, but not limited to these.
- MME Mobility Management Entity
- S-GW Serving Mobility Management Entity
- Information etc. can be output from the upper layer (or lower layer) to the lower layer (or upper layer). Input / output may be performed via a plurality of network nodes.
- the input / output information or the like may be stored in a specific place (for example, a memory) or may be managed by a management table. Input / output information and the like can be overwritten, updated, or additionally written. The output information or the like may be deleted. The input information or the like may be transmitted to another device.
- notification of information is not limited to the aspect / example described in this specification, and may be performed by other methods.
- notification of information includes physical layer signaling (for example, DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, It may be implemented by broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof.
- the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC connection setup (RRC Connection Setup) message, an RRC connection reconfiguration (RRC Connection Reconfiguration) message, or the like.
- the determination may be performed by a value represented by 1 bit (0 or 1), may be performed by a true / false value (Boolean: true or false), or may be performed by comparing numerical values (for example, a predetermined value) Comparison with the value).
- software, instructions, etc. may be transmitted / received via a transmission medium.
- software may use websites, servers, or other devices using wired technology such as coaxial cable, fiber optic cable, twisted pair and digital subscriber line (DSL) and / or wireless technology such as infrared, wireless and microwave.
- wired technology such as coaxial cable, fiber optic cable, twisted pair and digital subscriber line (DSL) and / or wireless technology such as infrared, wireless and microwave.
- DSL digital subscriber line
- wireless technology such as infrared, wireless and microwave.
- the channel and / or symbol may be a signal.
- the signal may be a message.
- the component carrier (CC) may be called a carrier frequency, a cell, or the like.
- information, parameters, and the like described in this specification may be represented by absolute values, may be represented by relative values from a predetermined value, or may be represented by other corresponding information.
- the radio resource may be indicated by an index.
- determining may encompass a wide variety of actions.
- “Judgment”, “decision” can be, for example, calculating, computing, processing, deriving, investigating, looking up (eg, table, database or another (Searching in the data structure), and confirming (ascertaining) what has been confirmed may be considered as “determining” or “determining”.
- “determination” and “determination” include receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access. (accessing) (e.g., accessing data in a memory) may be considered as “determined” or "determined”.
- determination and “decision” means that “resolving”, “selecting”, “choosing”, “establishing”, and “comparing” are regarded as “determining” and “deciding”. May be included. In other words, “determination” and “determination” may include considering some operation as “determination” and “determination”.
- the phrase “based on” does not mean “based only on”, unless expressly specified otherwise. In other words, the phrase “based on” means both “based only on” and “based at least on.”
- any reference to elements using designations such as “first”, “second”, etc. as used herein does not generally limit the amount or order of those elements. These designations can be used herein as a convenient way to distinguish between two or more elements. Thus, a reference to the first and second elements does not mean that only two elements can be employed there, or that in some way the first element must precede the second element.
- notification of predetermined information is not limited to explicitly performed, but is performed implicitly (for example, notification of the predetermined information is not performed). Also good.
- eNB base station UE mobile station 10 transmitter 101 eMBB data generation unit 103 URLLC data generation unit 105 transmission unit 107 puncture classification notification unit 20 receiver 201 detection unit 203 reception unit 205 puncture classification notification unit 1001 processor 1002 memory 1003 storage 1004 communication apparatus 1005 Input device 1006 Output device 1007 Bus
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Abstract
Description
第1の送信方式で送信される第1のデータを生成する第1データ生成部と、
第2の送信方式で送信される第2のデータを生成する第2データ生成部と、
前記第1のデータの送信に割り当てられたリソースのうち、所定の信号が送信される部分をパンクチャし、パンクチャされていない部分において前記第1のデータを送信し、パンクチャされた部分において前記第2のデータを送信する送信部と、
を有することを特徴とする。
図1は、本発明の実施例に係る無線通信システムの構成例を示す概略図である。図1に示すように、本発明の実施例に係る無線通信システムは、基地局eNBと移動局UEとを有する。図1の例では、基地局eNB及び移動局UEが1つずつ図示されているが、複数の基地局eNBを有していてもよいし、複数の移動局UEを有していてもよい。
図3は、本発明の実施例に係る無線通信システムにおける無線通信方法のシーケンス図である。
上記のように、本発明は、上りの通信に限定されず、下りの通信にも適用可能であるため、eMBBデータ及びURLLCデータを送信する装置である送信機と、eMBBデータ及びURLLCデータを受信する装置である受信機とについて説明する。
なお、上記実施例の説明に用いたブロック図は、機能単位のブロックを示している。これらの機能ブロック(構成部)は、ハードウェア及び/又はソフトウェアの任意の組み合わせによって実現される。また、各機能ブロックの実現手段は特に限定されない。すなわち、各機能ブロックは、物理的及び/又は論理的に結合した1つの装置により実現されてもよいし、物理的及び/又は論理的に分離した2つ以上の装置を直接的及び/又は間接的に(例えば、有線及び/又は無線)で接続し、これら複数の装置により実現されてもよい。
本発明の実施例によれば、緊急度の高いデータと、他のデータとの干渉を低減しつつ、緊急度の高いデータを低遅延で送信することが可能になる。例えば、eMBBデータの送信中に、緊急度の高いURLLCデータのパケットが発生した場合、eMBBデータにURLLCデータを埋め込ませて送信することができ、URLLCデータを低遅延で送信することが可能になる。
本明細書で説明した各態様/実施例は、LTE(Long Term Evolution)、LTE-A(LTE-Advanced)、SUPER 3G、IMT-Advanced、4G、5G、FRA(Future Radio Access)、W-CDMA(登録商標)、GSM(登録商標)、CDMA2000、UMB(Ultra Mobile Broadband)、IEEE 802.11(Wi-Fi)、IEEE 802.16(WiMAX)、IEEE 802.20、UWB(Ultra-WideBand)、Bluetooth(登録商標)、その他の適切なシステムを利用するシステム及び/又はこれらに基づいて拡張された次世代システムに適用されてもよい。
UE 移動局
10 送信機
101 eMBBデータ生成部
103 URLLCデータ生成部
105 送信部
107 パンクチャ分類通知部
20 受信機
201 検出部
203 受信部
205 パンクチャ分類通知部
1001 プロセッサ
1002 メモリ
1003 ストレージ
1004 通信装置
1005 入力装置
1006 出力装置
1007 バス
Claims (6)
- 送信機と受信機とを含む無線通信システムにおいて送信機として機能する無線通信装置であって、
第1の送信方式で送信される第1のデータを生成する第1データ生成部と、
第2の送信方式で送信される第2のデータを生成する第2データ生成部と、
前記第1のデータの送信中に前記第2のデータが生成された場合、前記第1のデータの送信に割り当てられたリソースのうち、所定の信号が送信される部分をパンクチャし、パンクチャされていない部分において前記第1のデータを送信し、パンクチャされた部分において前記第2のデータを送信する送信部と、
を有する無線通信装置。 - 前記送信部は、前記第1のデータの送信に割り当てられたリソースのうち、パンクチャできない信号を避けて、前記所定の信号が送信される部分をパンクチャし、パンクチャされた部分において前記第2のデータを送信する、請求項1に記載の無線通信装置。
- 前記送信部は、前記第2のデータのレートマッチングを行い、パンクチャされた部分において前記第2のデータを送信する、請求項2に記載の無線通信装置。
- 送信機と受信機とを含む無線通信システムにおいて受信機として機能する無線通信装置であって、
第1の送信方式で送信される第1のデータの送信に割り当てられたリソースのうち、所定の信号が送信される部分がパンクチャされ、パンクチャされた部分において、第2の送信方式で送信される第2のデータが送信されることを検出する検出部と、
パンクチャされていない部分において前記第1のデータを受信し、パンクチャされた部分において前記第2のデータを受信する受信部と、
を有する無線通信装置。 - 送信機と受信機とを含む無線通信システムにおいて送信機として機能する無線通信装置における無線通信方法であって、
第1の送信方式で送信される第1のデータを生成するステップと、
前記第1のデータを送信するステップと、
第2の送信方式で送信される第2のデータを生成するステップと、
前記第1のデータの送信中に前記第2のデータが生成された場合、前記第1のデータの送信に割り当てられたリソースのうち、所定の信号が送信される部分をパンクチャし、パンクチャされた部分において前記第2のデータを送信するステップと、
を有する無線通信方法。 - 送信機と受信機とを含む無線通信システムにおいて受信機として機能する無線通信装置における無線通信方法であって、
第1の送信方式で送信される第1のデータの送信に割り当てられたリソースのうち、所定の信号が送信される部分がパンクチャされ、パンクチャされた部分において、第2の送信方式で送信される第2のデータが送信されることを検出するステップと、
パンクチャされていない部分において前記第1のデータを受信し、パンクチャされた部分において前記第2のデータを受信するステップと、
を有する無線通信方法。
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| CN109076565B (zh) | 2023-10-03 |
| EP3457794A4 (en) | 2019-11-06 |
| JPWO2017195653A1 (ja) | 2019-04-04 |
| US11057906B2 (en) | 2021-07-06 |
| JP7057749B2 (ja) | 2022-04-20 |
| EP3457794A1 (en) | 2019-03-20 |
| CN109076565A (zh) | 2018-12-21 |
| US20190191443A1 (en) | 2019-06-20 |
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