WO2021007827A1 - Procédés et appareils d'indication et de détermination d'informations, dispositif de communication et support d'informations - Google Patents

Procédés et appareils d'indication et de détermination d'informations, dispositif de communication et support d'informations Download PDF

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Publication number
WO2021007827A1
WO2021007827A1 PCT/CN2019/096441 CN2019096441W WO2021007827A1 WO 2021007827 A1 WO2021007827 A1 WO 2021007827A1 CN 2019096441 W CN2019096441 W CN 2019096441W WO 2021007827 A1 WO2021007827 A1 WO 2021007827A1
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WIPO (PCT)
Prior art keywords
mcs
mapping relationship
repeated
repeated transmissions
indication information
Prior art date
Application number
PCT/CN2019/096441
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English (en)
Chinese (zh)
Inventor
牟勤
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北京小米移动软件有限公司
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Publication date
Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to PCT/CN2019/096441 priority Critical patent/WO2021007827A1/fr
Priority to CN201980001431.0A priority patent/CN110546970B/zh
Publication of WO2021007827A1 publication Critical patent/WO2021007827A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • 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
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • This application relates to the field of wireless communication technology, but is not limited to the field of wireless communication technology, and in particular to a method and device for information indication and determination, communication equipment and storage medium.
  • Machine Type Communication is a typical representative of cellular IoT technology.
  • MTC technology has been widely used in smart cities, such as meter reading; smart agriculture, such as the collection of information such as temperature and humidity; smart transportation, such as shared bicycles and many other fields.
  • a terminal applying MTC technology can be called an MTC terminal.
  • the embodiment of the application discloses an information indication and determination method and device, communication equipment and storage medium.
  • the first aspect of the embodiments of the present application provides an information indication method, which is applied in a base station, and includes:
  • joint indication information is issued.
  • the joint indication information is used to indicate the mapping Relationship, indicating the number of repeated transmissions of the scheduled TB and at the same time indicating the MCS.
  • the second aspect of the embodiments of the present application provides an information determination method, which is applied to a terminal, and includes:
  • the number of repeated transmissions of the transport block TB is determined, and the modulation and coding strategy MCS is determined.
  • a third aspect of the embodiments of the present application provides an information indicating device, including:
  • the issuing module is configured to issue joint indication information according to the number of repeated transmissions of the transmission block TB and the mapping relationship between the modulation and coding strategy MCS, where the joint indication information is used to indicate the mapping relationship, Indicate the number of repeated transmissions of the scheduled TB and indicate the MCS at the same time.
  • a fourth aspect of the embodiments of the present application provides an information determining device, which includes:
  • the receiving module is configured to receive joint indication information
  • the determining module is configured to determine the number of repeated transmissions of the transmission block TB according to the mapping relationship indicated by the joint indication information, and determine the modulation and coding strategy MCS.
  • a fifth aspect of the embodiments of the present application provides a communication device, including:
  • the processor is respectively connected to the antenna and the memory, and is configured to execute computer-executable instructions stored on the memory, control the transmission and reception of the antenna, and be able to implement what is provided by the first aspect and/or the second aspect method.
  • a sixth aspect of the embodiments of the present application provides a computer storage medium that stores computer-executable instructions, and the computer-executable instructions are executed by a processor to implement the methods provided in the first aspect and/or the second aspect .
  • FIG. 1 is a schematic structural diagram of a wireless system provided by an embodiment of this application.
  • FIG. 2 is a schematic flowchart of an information indication method provided by an embodiment of this application.
  • FIG. 3 is a schematic diagram of an indication of an MPDCCH message of an MTC terminal according to an embodiment of the application
  • FIG. 4 is a schematic flowchart of another information indication method provided by an embodiment of the application.
  • FIG. 5 is a schematic flowchart of an information determination method provided by an embodiment of this application.
  • FIG. 6 is a schematic structural diagram of an information indicating device provided by an embodiment of this application.
  • FIG. 7 is a schematic structural diagram of another information determining device provided by an embodiment of this application.
  • FIG. 8 is a schematic structural diagram of a terminal provided by an embodiment of this application.
  • FIG. 9 is a schematic structural diagram of a base station provided by an embodiment of this application.
  • FIG. 1 shows a schematic structural diagram of a wireless communication system provided by an embodiment of the present application.
  • the wireless communication system is a communication system based on cellular mobile communication technology, and the wireless communication system may include several terminals 110 and several base stations 120.
  • the terminal 110 may be a device that provides voice and/or data connectivity to the user.
  • the terminal 110 can communicate with one or more core networks via a radio access network (RAN).
  • RAN radio access network
  • the terminal 110 can be an Internet of Things terminal, such as a sensor device, a mobile phone (or “cellular” phone), and
  • the computer of the Internet of Things terminal for example, may be a fixed, portable, pocket-sized, handheld, computer built-in device, or a vehicle-mounted device.
  • station For example, station (Station, STA), subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), mobile station (mobile), remote station (remote station), access point, remote terminal ( remote terminal), access terminal (access terminal), user device (user terminal), user agent (user agent), user equipment (user device), or user terminal (user equipment, UE).
  • the terminal 110 may also be a device of an unmanned aerial vehicle.
  • the terminal 110 may also be an in-vehicle device, for example, it may be a trip computer with a wireless communication function, or a wireless communication device connected to the trip computer.
  • the terminal 110 may also be a roadside device, for example, it may be a street lamp, signal lamp, or other roadside device with a wireless communication function.
  • the base station 120 may be a network side device in a wireless communication system.
  • the wireless communication system may be the 4th generation mobile communication (4G) system, also known as the Long Term Evolution (LTE) system; or, the wireless communication system may also be a 5G system, Also known as the new radio (NR) system or 5G NR system.
  • the wireless communication system may also be the next-generation system of the 5G system.
  • the access network in the 5G system can be called NG-RAN (New Generation-Radio Access Network).
  • the base station 120 may be an evolved base station (eNB) used in a 4G system.
  • the base station 120 may also be a base station (gNB) adopting a centralized and distributed architecture in the 5G system.
  • the base station 120 adopts a centralized and distributed architecture it usually includes a centralized unit (CU) and at least two distributed units (DU).
  • the centralized unit is provided with a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer, a radio link layer control protocol (Radio Link Control, RLC) layer, and a media access control (Media Access Control, MAC) layer.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC media access control
  • a physical (Physical, PHY) layer protocol stack is provided in the unit, and the embodiment of the present application does not limit the specific implementation manner of the base station 120.
  • a wireless connection can be established between the base station 120 and the terminal 110 through a wireless air interface.
  • the wireless air interface is a wireless air interface based on the fourth-generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth-generation mobile communication network technology (5G) standard, such as The wireless air interface is a new air interface; or, the wireless air interface may also be a wireless air interface based on 5G-based next-generation mobile communication network technology standards.
  • an E2E (End to End) connection may also be established between the terminals 110.
  • V2V vehicle to vehicle
  • V2I vehicle to Infrastructure
  • V2P vehicle to pedestrian
  • the above-mentioned wireless communication system may further include a network management device 130.
  • the network management device 130 may be a core network device in a wireless communication system.
  • the network management device 130 may be a mobility management entity (Mobility Management Entity) in an evolved packet core network (Evolved Packet Core, EPC). MME).
  • the network management device may also be other core network devices, such as Serving GateWay (SGW), Public Data Network GateWay (PGW), policy and charging rules function unit (Policy and Charging Rules). Function, PCRF) or Home Subscriber Server (HSS), etc.
  • SGW Serving GateWay
  • PGW Public Data Network GateWay
  • Policy and Charging Rules Policy and Charging Rules
  • Function PCRF
  • HSS Home Subscriber Server
  • this embodiment provides an information indication method, including:
  • joint indication information is issued, where the joint indication information is used to indicate the mapping relationship to indicate the number of repeated transmissions of the scheduled TB and indicate the MCS at the same time.
  • the information indication method provided in this embodiment can be applied to a base station.
  • the TB here is a kind of content block; different TBs contain different data content.
  • the TB here may be the transport block proposed in the MTC technology.
  • MTC terminal Before the MTC terminal uses the TB for data transmission, it can use the MTC Physical Downlink Control Channel (MPDCCH) to schedule TB transmission, for example, use the Downlink Control Information (DCI) issued by the MPDCCH to indicate the TB , The number of TBs and the number of repeated transmissions of a TB.
  • MPDCCH Physical Downlink Control Channel
  • DCI Downlink Control Information
  • the number of repeated transmissions can be any positive integer.
  • the number of repeated transmissions for a TB is determined, and the reliability of transmission can be ensured by repeated transmission.
  • the TB can be successfully received through repeated transmissions; for another example, when the corresponding TB is not completely successfully received in one transmission, multiple receptions of repeated transmissions and joint decoding can be used to ensure the TB Transmission success rate.
  • the base station pre-configures the number of repeated transmissions of the TB and the mapping relationship between the MCS; or, pre-prescribes the number of repeated transmissions of the TB and the mapping relationship between the MCS in the communication protocol.
  • This mapping relationship can also be sent to the terminal by the base station.
  • the number of repeated transmissions of TB and MCS are indicated by using different information fields, and the number of bits occupied by each information field is related to the number of candidates for the number of repeated transmissions of TB and the backup of MCS.
  • the number is relevant.
  • the M1 bit is used to indicate the number of repeated transmissions
  • the M2 bit is used to indicate the MCS, so that a total of at least M1+M2 bits are consumed.
  • the joint indication information indicates the mapping relationship between the number of repeated transmissions of the TB and the MCS.
  • N N is less than M1+M2 bits
  • N N is less than M1+M2 bits
  • the terminal After receiving the N-bit joint indication information, the number of repeated transmissions and MCS indicated by the base station can be determined at the same time, thereby reducing signaling overhead.
  • Table 1 is a mapping relationship between joint indication information, repeated transmission times, repeated transmission times, and MCS:
  • the number of repeated transmissions R1, R2, R3, and R4 in Table 1 can be any positive integer.
  • R1, R2, R3, and R4 increase sequentially.
  • mapping relationship between the number of repeated transmissions and the MCS in Table 1 is adopted, so only 5 bits are needed to simultaneously complete the indication of the number of repeated transmissions and the MCS level.
  • the TB may be the TB allocated to the MTC terminal.
  • MTC terminals have relatively weak processing capabilities. equipment. Therefore, it is necessary to enhance the coverage of the MTC terminal.
  • the same content is repeatedly transmitted in multiple transmission time units, and the receiving end (for example, the MTC terminal) performs information recovery in conjunction with the repeatedly transmitted content.
  • the number of repeated transmissions is generally set according to channel conditions. The worse the channel condition, the greater the number of repeated transmissions.
  • MTC has two coverage enhancement modes, coverage enhancement mode A and coverage enhancement mode B.
  • Coverage enhancement mode A is used when channel conditions are good, so the number of repetitive transmissions that can be supported under coverage enhancement mode A is relatively small.
  • Coverage enhancement mode B is usually applied to poor channel conditions, so the number of repeated transmissions that can be supported is relatively large.
  • the base station first configures multiple optional repeated transmission times for the terminal through high-layer signaling (for example, RRC signaling), for example, configures 4 optional repeated transmission times.
  • the base station will set an appropriate number of repeated transmissions among multiple candidate repeated transmissions according to the user's current channel conditions and MCS selection, and indicate in the DCI.
  • the high-level signaling here may be signaling above the physical layer, for example, through media access control (MAC) layer signaling or radio resource control (RRC) signaling layer signaling.
  • MAC media access control
  • RRC radio resource control
  • the MTC terminal supports different modulation and demodulation schemes to deal with different channel scenarios. For example, in MTC coverage enhancement mode A, 16 MCSs are supported. The 16 types of MCS can carry different numbers of bits in different resource allocations.
  • I MCS is the number of the MCS level
  • I TBS is the number of the corresponding TBS.
  • N PRB is the number of physical resources allocated to the user.
  • the numbers in Table 2 indicate the bits of information carried by the data blocks transmitted under different modulation and coding schemes and different resource configurations. For example, when I MCS is 9 and N PRB is 6, the size of the corresponding data block is 936.
  • the transmission block set (Transmission Block Set, TBS) in Table 2 refers to the combination of PRB allocation and MCS level.
  • One MPDCCH message of the MTC terminal can be used to schedule a physical downlink shared channel (MPDSCH) or physical uplink shared channel (PUSCH) of an MTC terminal.
  • the MTC terminal needs to receive and blindly check the MPDCCH before receiving or sending data.
  • the MTC terminal sends or a data packet with a large amount of data, it needs several rounds of scheduling to complete.
  • the scheduling content of several MPDCCHs are similar. Even in this case, the terminal still needs to demodulate each scheduled MPDCCH, which consumes power. In order to reduce power consumption, the MPDCCH scheduling method shown in FIG. 3 of the MTC terminal in the embodiment of the present application.
  • the MPDCCH message at one time schedules the transmission of the MPDSCH at four times.
  • the 4 MPDSCHs in Figure 3 are MPDSCH1, MPDSCH2, MPDSCH3 and MPDSCH4.
  • the joint indication information may be information carried in the MPDCCH message.
  • the MPDCCH message is a message sent using the MPDCCH.
  • MTC coverage enhancement mode A one DCI issued by MPDCCH can schedule up to 8 downlink received TBs.
  • coverage enhancement mode B a DCI issued by an MPDCCH can schedule up to 4 downlink received TBs.
  • the joint indication information issued by the base station provided in this embodiment may be DCI sent when the MTC terminal is in enhanced coverage mode A or enhanced coverage mode B.
  • mapping relationship between the number of repeated transmissions of TB and MCS includes:
  • mapping relationship between the number of repeated transmissions of TB and different MCS levels is the mapping relationship between the number of repeated transmissions of TB and different MCS levels.
  • the number of repeated transmissions R1, R2, R3, and R4 all correspond to different MCS levels; and the five bits corresponding to different mapping relationships have different bit values.
  • the terminal receives the five issued by the base station.
  • the joint indication information of the bit can clearly know the number of repeated transmissions and the MCS level indicated by the current base station.
  • the enhanced coverage effect and the number of repeated transmissions will be balanced to ensure successful reception by the receiving end such as MTC terminals. rate.
  • mapping relationship between the number of repeated transmissions of TB and different MCS levels includes:
  • the first set of times is a mapping relationship between MCS levels higher than the first threshold, where the first set of times includes: one or more repeated transmission times;
  • the second set of times is a mapping relationship between MCS levels equal to or lower than the first threshold, where the second set of times includes: one or more repeated transmission times;
  • the number of repeated transmission times included in the second set of times is different from the number of repeated transmission times included in the first set of times, and/or at least one of the included repeated transmission times is different.
  • the first threshold is the level threshold of the MCS level.
  • the first number set and the second number set include at least one repeated transmission number.
  • the number of repeated transmission times contained in the first number set and the second number set are different, or the number is the same but the value of the repeated transmission number is different.
  • the MCS level supported by the terminal is based on the first threshold in at least two sub-ranges, and the first set of times and the second set of times are respectively set for the two sub-ranges.
  • the joint indication information can simply tell the terminal the number of repeated transmissions of the TB indicated by the current base station and the MCS level allowed to be used by the terminal by indicating the mapping relationship.
  • the issuing of joint indication information includes:
  • joint indication information is issued.
  • the joint indication information is also used to indicate the number of TBs by indicating the mapping relationship.
  • the mapping relationship is further the mapping relationship between the number of repeated transmissions, the MCS and the number of TBs.
  • the number of TBs is the number of different TBs, that is, the number of TBs that transmit different content.
  • the number of TBs is related to the amount of data that the terminal needs to transmit.
  • Table 3 is a mapping relationship between the number of repeated transmissions of TB, MCS, and the number of TBs provided in an embodiment of this application.
  • the joint indication information that can be completely carried by one information field, the number of repeated transmissions, the number of TBs, and the MCS level indicated at the same time, saves signaling overhead again.
  • the mapping relationship between the number of repeated transmissions, the MCS and the number of TBs is defined, and the indication can be completed using only 6 bits.
  • the method provided in the embodiment of the present application may specifically be:
  • joint indication information is issued.
  • mapping relationship between the number of repeated transmissions of TB and the number of MCS and TB includes:
  • the third number set the mapping relationship between the first TB number and the first MCS set, where the third number set includes at least one repeated transmission number; the first MCS set includes at least one MCS level;
  • the fourth order set the mapping relationship between the second TB number and the second MCS set
  • the fourth number set includes at least one repeated transmission number; the second MCS set includes at least one MCS level.
  • the MCS level can be 0 to 15, that is, the first MCS set can include MCS levels numbered 0 to 15.
  • the corresponding number of repeated transmissions can be changed among R1 to R4 based on the number of the first TB and the MCS level.
  • the MCS levels may be 9-15, that is, the second MCS set may include MCS levels numbered 9-15.
  • the corresponding number of repeated transmissions can be changed from R3 to R4 based on the second TB number and MCS level.
  • the number of the first TB is 3, and the MCS levels may be 11 and 13, that is, the first MCS set may include MCS levels numbered 0 and 13.
  • the corresponding number of repeated transmissions can be changed in R3 to R4 based on the number of the first TB and the MCS level.
  • the second number of TBs is greater than the first number of TBs
  • the number of MCS levels contained in the second MCS set is more than the data contained in the first MCS set
  • the number of repetitive transmission times contained in the third frequency set is greater than the number of repetitive transmission times contained in the fourth frequency set; and/or the average value of the repeated transmission times contained in the third frequency set is less than the repetition contained in the fourth frequency set The average value of the number of transfers.
  • the joint indication information is used to inform the terminal of the number of repeated transmissions at once through the indication of the mapping relationship.
  • the mapping relationship may be: the mapping relationship pre-written in the communication protocol. In this way, the mapping relationship is written when the terminal leaves the factory or the base station is established.
  • the mapping relationship may be a pre-negotiated mapping relationship, for example, a mapping relationship issued by a base station in a broadcast message or a multicast message.
  • both the base station and the terminal know any of the foregoing mapping relationships in advance.
  • the base station sends the joint indication information, it queries the mapping relationship and sends the joint indication information according to the requirement of the number of repeated transmissions.
  • this embodiment provides an information determination method, which includes:
  • Step S210 Receive joint indication information
  • Step S220 Determine the number of repeated transmissions of the TB according to the mapping relationship indicated by the joint indication information, and determine the MCS.
  • the method for determining information in this embodiment is applied to a terminal, for example, the aforementioned MTC terminal. What the terminal receives is the joint indication information, rather than the separate indication information indicating the content of one information.
  • the terminal knows the number of repeated transmissions and the MCS through the reception of a joint indication information, which reduces the signaling overhead of the reception.
  • the method further includes:
  • the number of TBs is determined according to the mapping relationship indicated by the joint indication information.
  • the mapping relationship may be the mapping relationship between the number of repeated transmissions and the MCS, or the mapping relationship between the number of repeated transmissions, the MCS, and the number of TBs. If the mapping relationship is between the three, the terminal will also determine the number of TBs according to the joint indication information.
  • mapping relationship between the number of repeated transmissions and MCS or the mapping relationship between the number of repeated transmissions, the number of MCS, and the number of TBs, refer to the foregoing embodiment, and will not be omitted here. repeated.
  • this embodiment provides an information indicating device, including:
  • the issuing module is configured to issue joint indication information according to the number of repeated transmissions of the transmission block TB and the mapping relationship between the modulation and coding strategy MCS.
  • the joint indication information is used to indicate the scheduled mapping relationship by indicating the mapping relationship.
  • the issuing module provided in this embodiment may be a program module, and after the program module is executed by the processor, the issuing of the joint indication information can be realized.
  • the apparatus may further include: a storage module; the storage module may be used to store the mapping relationship and/or the association indication information.
  • the issuing module may be a combination of software and hardware; the combination of software and hardware may be various programmable arrays; programmable arrays include but are not limited to complex programmable arrays or field programmable arrays.
  • the issuing module may be a pure hardware module; the pure hardware module includes, but is not limited to, an application specific integrated circuit.
  • mapping relationship between the number of repeated transmissions of TB and MCS includes:
  • mapping relationship between the number of repeated transmissions of TB and different MCS levels is the mapping relationship between the number of repeated transmissions of TB and different MCS levels.
  • mapping relationship between the number of repeated transmissions of TB and different MCS levels includes:
  • the second set of times is a mapping relationship between MCS levels equal to or lower than the first threshold, where the second set of times includes: one or more repeated transmission times;
  • the number of repeated transmission times included in the second set of times is different from the number of repeated transmission times included in the first set of times, and/or at least one of the included repeated transmission times is different.
  • issuing the joint indication information includes:
  • joint indication information is issued, where the joint indication information is also used to indicate the number of TBs by indicating the mapping relationship.
  • the mapping relationship between the number of repeated transmissions of TB and the number of MCS and TB includes:
  • the third number set the mapping relationship between the first TB number and the first MCS set, where the third number set includes at least one repeated transmission number; the first MCS set includes at least one MCS level;
  • the fourth order set the mapping relationship between the second TB number and the second MCS set
  • the fourth number set includes at least one repeated transmission number; the second MCS set includes at least one MCS level.
  • the second number of TBs is greater than the first number of TBs
  • the number of MCS levels contained in the second MCS set is more than the data contained in the first MCS set
  • the number of repetitive transmission times contained in the third frequency set is greater than the number of repetitive transmission times contained in the fourth frequency set; and/or the average value of the repeated transmission times contained in the third frequency set is less than the repetition contained in the fourth frequency set The average value of the number of transfers.
  • this embodiment provides an information determination device, including:
  • the receiving module 210 is configured to receive joint indication information
  • the determining module 220 is configured to determine the number of repeated transmissions of the TB according to the mapping relationship indicated by the joint indication information, and determine the MCS.
  • the receiving module 210 and the determining module 220 provided in this embodiment may be program modules. After the program module is executed by the processor, it can realize the reception of joint indication information, the number of repeated transmissions, and the determination of MCS.
  • the receiving module 210 and the determining module 220 may be a combination of software and hardware; the combination of software and hardware may be various programmable arrays; programmable arrays include, but are not limited to, complex programmable arrays or field programmable arrays.
  • the receiving module 210 and the determining module 220 may be pure hardware modules; the pure hardware modules include but are not limited to application specific integrated circuits.
  • the determining module 220 is further configured to determine the number of TBs according to the mapping relationship indicated by the joint indication information.
  • MCS selection and the setting of the number of repeated transmissions are set based on channel conditions.
  • a higher-level MCS can be set, and the number of repeated transmissions will increase at this time.
  • Another situation is to set a lower level of MCS, then the number of repeated transmissions will be relatively small at this time.
  • the MCS and the number of repeated transmissions can be jointly coded to obtain the aforementioned joint coding information.
  • the data volume of the data packet is relatively large.
  • the data volume of the transmitted data blocks is limited, for example, only large data blocks are allowed to be transmitted.
  • a larger MCS needs to be selected.
  • the number of scheduled TBs and MCS can be jointly coded.
  • MCS the number of repeated transmissions, and the number of scheduled TBs can be jointly coded.
  • the number of optional repeated transmissions configured by the base station for the user is ⁇ R1, R2, R3, R4 ⁇ .
  • limit the optional repeated transmission times For example, when the MCS level is less than the threshold X1, the optional repeated transmission times are only ⁇ R1, R2 ⁇ , and when the MCS level is greater than the threshold, the optional repeated transmissions The number of transmissions is ⁇ R3, R4 ⁇ .
  • the MCS and its corresponding optional number of repeated transmissions are jointly coded to generate the mapping relationship between the joint indication information, MCS and the number of repeated transmissions as shown in Table 1.
  • the compression and joint coding between the number of TBs and MCS are scheduled to obtain the aforementioned joint indication information.
  • the number of scheduled TBs is less than the threshold Y1, more MCS levels can be used, and when the number of scheduled TBs is greater than this threshold, the number of MCS levels used is limited.
  • the above threshold can be fixed by the protocol, or configured by high-level signaling.
  • the number of scheduled TBs when the number of scheduled TBs is 1, all MCS levels can be used at this time, and when the number of scheduled TBs is 2, only four MCS levels can be used at this time. When the number of scheduled TBs is greater than 2, Two of the MCS levels are used at this time.
  • Table 4 provides a mapping relationship between the joint indication information, the number of TBs, and the MCS level provided by this example.
  • This method is a combination of method one and method two, that is, the MCS level is restricted under different TB numbers, the number of repeated transmissions is restricted under a specific MCS, and the number of TBs, MCS levels and the number of repeated transmissions are jointly encoded.
  • the number of optional repeated transmissions is limited under different MCS, and joint coding is performed to obtain joint indication information.
  • the MCS selection is restricted under different scheduling TB numbers, and joint coding is performed.
  • the mapping relationship provided in this example can be as shown in Table 3 above.
  • This embodiment also provides a communication device, including:
  • the processor is respectively connected to the antenna and the memory, and is used to control the antenna to send and receive wireless signals by executing executable programs stored on the memory, and can execute the steps of the information indication method and/or information determination method provided by any of the foregoing embodiments.
  • the communication device provided in this embodiment may be the aforementioned terminal or base station.
  • the terminal can be various human-borne terminals or vehicle-mounted terminals.
  • the base station may be various types of base stations, for example, a 4G base station or a 5G base station.
  • the antenna may be various types of antennas, for example, a mobile antenna such as a 3G antenna, a 4G antenna, or a 5G antenna; the antenna may also include a WiFi antenna or a wireless charging antenna.
  • a mobile antenna such as a 3G antenna, a 4G antenna, or a 5G antenna
  • the antenna may also include a WiFi antenna or a wireless charging antenna.
  • the memory may include various types of storage media, and the storage media is a non-transitory computer storage medium that can continue to store the information stored thereon after the communication device is powered off.
  • the processor may be connected to the antenna and the memory through a bus or the like, and used to read executable programs stored on the memory, for example, through the information indicating method and/or information determining method shown in FIG. 2, FIG. 4, and/or FIG.
  • the implementation of this application also provides a non-transitory computer-readable storage medium that stores an executable program, where the executable program is executed by a processor to implement the information indicating method provided by any of the foregoing embodiments And/or the steps of the information determining method, for example, at least one of the methods shown in FIG. 2, FIG. 4, and/or FIG. 5.
  • Fig. 8 shows a terminal according to an exemplary embodiment.
  • the terminal may be a mobile phone, a computer, a digital broadcasting terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.
  • the terminal 800 may include one or more of the following components: a processing component 802, a memory 804, a power supply component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, And the communication component 816.
  • the processing component 802 generally controls the overall operations of the terminal 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations.
  • the processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the foregoing method.
  • the processing component 802 may include one or more modules to facilitate the interaction between the processing component 802 and other components.
  • the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.
  • the memory 804 is configured to store various types of data to support operations in the terminal 800. Examples of these data include instructions for any application or method operated on the terminal 800, contact data, phone book data, messages, pictures, videos, etc.
  • the memory 804 can be implemented by any type of volatile or nonvolatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic Disk or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Magnetic Disk Magnetic Disk or Optical Disk.
  • the power supply component 806 provides power for various components of the terminal 800.
  • the power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the terminal 800.
  • the multimedia component 808 includes a screen that provides an output interface between the terminal 800 and the user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user.
  • the touch panel includes one or more touch sensors to sense touch, sliding, and gestures on the touch panel. The touch sensor can not only sense the boundary of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation.
  • the multimedia component 808 includes a front camera and/or a rear camera. When the terminal 800 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.
  • the audio component 810 is configured to output and/or input audio signals.
  • the audio component 810 includes a microphone (MIC).
  • the microphone When the terminal 800 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive an external audio signal.
  • the received audio signal may be further stored in the memory 804 or transmitted via the communication component 816.
  • the audio component 810 further includes a speaker for outputting audio signals.
  • the I/O interface 812 provides an interface between the processing component 802 and a peripheral interface module.
  • the peripheral interface module may be a keyboard, a click wheel, a button, and the like. These buttons may include but are not limited to: home button, volume button, start button, and lock button.
  • the sensor component 814 includes one or more sensors for providing the terminal 800 with various status assessments.
  • the sensor component 814 can detect the open/close state of the terminal 800 and the relative positioning of components, such as the display and keypad of the terminal 800.
  • the sensor component 814 can also detect the position change of the terminal 800 or a component of the terminal 800. The presence or absence of contact with the terminal 800, the orientation or acceleration/deceleration of the terminal 800, and the temperature change of the terminal 800.
  • the sensor component 814 may include a proximity sensor configured to detect the presence of nearby objects when there is no physical contact.
  • the sensor component 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.
  • the communication component 816 is configured to facilitate wired or wireless communication between the terminal 800 and other devices.
  • the terminal 800 can access a wireless network based on a communication standard, such as Wi-Fi, 2G or 3G, or a combination thereof.
  • the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication.
  • the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.
  • RFID radio frequency identification
  • IrDA infrared data association
  • UWB ultra-wideband
  • Bluetooth Bluetooth
  • the terminal 800 may be configured by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable A gate array (FPGA), controller, microcontroller, microprocessor, or other electronic components are implemented to implement the above methods.
  • ASIC application specific integrated circuits
  • DSP digital signal processors
  • DSPD digital signal processing devices
  • PLD programmable logic devices
  • FPGA field programmable A gate array
  • controller microcontroller, microprocessor, or other electronic components are implemented to implement the above methods.
  • non-transitory computer-readable storage medium including instructions, such as the memory 804 including instructions, which can be executed by the processor 820 of the terminal 800 to complete the foregoing method.
  • the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.
  • Figure 9 is a schematic diagram of a base station.
  • the base station 900 includes a processing component 922, which further includes one or more processors, and a memory resource represented by a memory 932, for storing instructions that can be executed by the processing component 922, such as application programs.
  • the application program stored in the memory 932 may include one or more modules each corresponding to a set of instructions.
  • the processing component 922 is configured to execute instructions.
  • the base station 900 may also include a power supply component 926 configured to perform power management of the base station 900, a wired or wireless network interface 950 configured to connect the base station 900 to the network, and an input output (I/O) interface 958.
  • the base station 900 can operate based on an operating system stored in the memory 932, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM or the like.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne des procédés et des appareils d'indication et de détermination d'informations, ainsi qu'un dispositif de communication et un support d'informations. Le procédé d'indication d'informations consiste : à émettre des informations d'indication conjointes selon une relation de mappage entre le nombre de retransmissions d'un bloc de transmission (TB) et une stratégie de codage de modulation (MCS), les informations d'indication conjointes étant utilisées pour indiquer le nombre de retransmissions du TB planifié et la MCS en indiquant la relation de mappage.
PCT/CN2019/096441 2019-07-17 2019-07-17 Procédés et appareils d'indication et de détermination d'informations, dispositif de communication et support d'informations WO2021007827A1 (fr)

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PCT/CN2019/096441 WO2021007827A1 (fr) 2019-07-17 2019-07-17 Procédés et appareils d'indication et de détermination d'informations, dispositif de communication et support d'informations
CN201980001431.0A CN110546970B (zh) 2019-07-17 2019-07-17 信息指示、确定方法及装置、通信设备及存储介质

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EP4093067A4 (fr) * 2020-01-15 2023-10-18 Beijing Xiaomi Mobile Software Co., Ltd. Procédé et appareil de transmission d'informations de commande de liaison descendante, dispositif de communication et support de stockage

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