WO2017133011A1 - Procédé, dispositif et système de notification de longueur d'intervalle de temps de transmission (tti) - Google Patents

Procédé, dispositif et système de notification de longueur d'intervalle de temps de transmission (tti) Download PDF

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Publication number
WO2017133011A1
WO2017133011A1 PCT/CN2016/073704 CN2016073704W WO2017133011A1 WO 2017133011 A1 WO2017133011 A1 WO 2017133011A1 CN 2016073704 W CN2016073704 W CN 2016073704W WO 2017133011 A1 WO2017133011 A1 WO 2017133011A1
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WO
WIPO (PCT)
Prior art keywords
tti length
information
user equipment
tti
base station
Prior art date
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PCT/CN2016/073704
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English (en)
Chinese (zh)
Inventor
吕永霞
李超君
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201680060785.9A priority Critical patent/CN108141718A/zh
Priority to PCT/CN2016/073704 priority patent/WO2017133011A1/fr
Publication of WO2017133011A1 publication Critical patent/WO2017133011A1/fr

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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
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • 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
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0092—Indication of how the channel is divided
    • 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

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method, a device, and a system for notifying a transmission time interval (TTI) length.
  • TTI transmission time interval
  • the LTE system may have multiple TTIs of different lengths.
  • the previous Long Term Evolution (LTE) system only supports one-length TTI, such as 1 ms, but now due to different data.
  • TTIs such as:
  • the data of the delay uses a long TTI, while the data of the low delay requires a short TTI; for example, the existing Universal Mobile Telecommunications System (UMTS) also has two TTIs of different lengths: 10 ms and 2 ms.
  • UMTS Universal Mobile Telecommunications System
  • the primary device notifies the user by transmitting the TTI in the Radio Resource Control (RRC) signaling, so that the user can send and receive data or control information according to the TTI in the received RRC signaling;
  • RRC Radio Resource Control
  • the transmission duration typically requires at least one hundred milliseconds, which means that the TTI takes more than a hundred milliseconds to change.
  • the TTI adapted to the wireless channel also changes very fast, such as: signal to noise ratio comparison
  • a poor channel requires a long TTI, and a better quality channel requires a short TTI.
  • the TTI is notified by RRC signaling, it is obvious that the TTI cannot adapt to the change of the wireless channel, for example, the wireless channel becomes a signal.
  • the channel with poor noise ratio When the channel with poor noise ratio is poor, it cannot be notified to the other party to change to a long TTI through RRC signaling, so that the communication dual-issue still uses short TTI to send and receive data or control information, so that the data or control signal The information cannot be demodulated correctly, resulting in a performance degradation of the system.
  • the embodiment of the present invention provides a method, a device, and a system for notifying a TTI length, so as to solve the problem that the TTI cannot be adapted to the change of the wireless channel by the RRC signaling, so that the performance of the system is degraded.
  • the embodiment of the present invention provides a method for notifying a length of a transmission time interval TTI, which may include:
  • the base station configures at least one TTI length set; each TTI length set in the at least one TTI length set includes: M different TTI length subsets, each TTI length subset includes: N TTI lengths, the N The TTI length is in one-to-one correspondence with N channels; the M is an integer greater than or equal to 2, and the N is an integer greater than or equal to 1;
  • the first information is used to determine a first TTI length subset in the first TTI length set;
  • the first TTI length set is the at least one Any set of TTI lengths in the TTI length set;
  • the base station receives or sends data or control information on N channels according to N TTI lengths in the first TTI length subset.
  • the TTI length is notified to the user equipment through the physical layer. Since the physical layer signaling is flexible, the physical layer signaling time is fast and can be well adapted to the radio resource control (RRC) signaling. The delay requirement of the service data and/or the requirement of the change of the wireless channel. Therefore, the method of using the physical layer signaling to notify the user equipment of the TTI length in the present case can improve the overall performance of the system, and avoids the existing RRC configuration information. A problem that informs the system that the TTI length is degraded.
  • RRC radio resource control
  • the N channels may be N channels of the following channels:
  • the physical downlink shared channel PDSCH, the physical uplink shared channel PUSCH, and the physical uplink control channel PUCCH are the physical downlink shared channel PDSCH, the physical uplink shared channel PUSCH, and the physical uplink control channel PUCCH.
  • the first information may be each TTI length value in the first TTI length subset.
  • the TTI length value is a TTI length value determined by the base station according to the requirement of the delay of the service data and/or the change of the wireless channel from the configured TTI length set.
  • the first information may also be indication information indicating a subset of the first TTI length, thereby reducing the number of transmission bits and providing a transmission rate; therefore, in an implementation manner of the first aspect, when the first information is And the method further includes: before the first information is sent to the user equipment by the physical layer signaling, after the at least one TTI length set is configured by the base station, the method further includes:
  • the base station sends the at least one TTI length set to the user equipment by using radio resource control RRC configuration signaling.
  • the sending, by the base station, the first information to the user equipment by using physical layer signaling may include:
  • the second information includes: first information corresponding to the user equipment;
  • a validity period may be set for the determined first TTI length subset, that is, the base station and the user equipment allow the TTI length in the first TTI length subset to receive or send data during the validity period.
  • the base station may pre-configure or default other TTI length subsets to receive or send data or control information; specifically, when the first message is sent to the user equipment through the physical layer,
  • the method can also include:
  • the third layer information is used to indicate the validity period of the first TTI length subset, so that the user equipment can flexibly use the TTI length to receive or send data or control information in conjunction with the validity period.
  • the embodiment of the present invention further provides a method for notifying the length of the transmission time interval TTI, and the method may include:
  • the user equipment receives the first information that is sent by the base station by using physical layer signaling, where the first information is used to determine a first TTI length subset in the first TTI length set, where the first TTI length set is at least one TTI length set. Any one of the TTI length sets; the at least one TTI length set is configured by the base station, each TTI length set includes: M different TTI length subsets, each TTI length subset includes: N TTI lengths, The N TTIs are in one-to-one correspondence with N channels; the M is an integer greater than or equal to 2, and the N is an integer greater than or equal to 1;
  • the user equipment receives or sends data or control information on N channels according to N TTI lengths in the first TTI length subset.
  • the TTI length is notified to the user equipment through the physical layer. Since the physical layer signaling is flexible, the physical layer signaling time is fast and can be well adapted to the radio resource control (RRC) signaling. The delay requirement of the service data and/or the requirement of the change of the wireless channel. Therefore, the method of using the physical layer signaling to notify the user equipment of the TTI length in the present case can improve the overall performance of the system, and avoids the existing RRC configuration information. A problem that informs the system that the TTI length is degraded.
  • RRC radio resource control
  • the first information may be each TTI length value in the first TTI length subset, and the TTI length value is determined by the base station according to the delay requirement of the service data and/or the change of the wireless channel from the configured TTI length set. TTI length value.
  • the first information may also be indication information indicating a subset of the first TTI length, thereby reducing the number of transmission bits and providing a transmission rate; therefore, in an implementation manner of the second aspect, when the first information is And the method further includes: before the user equipment receives the first information that is sent by the base station by using the physical layer signaling, when the user equipment receives the first information of the first TTI length subset, the method further includes:
  • the user equipment receives the at least one TTI length set sent by the base station by using a radio resource control RRC configuration signaling.
  • a validity period may be set for the determined first TTI length subset, that is, the base station and the user equipment allow the TTI length in the first TTI length subset to receive or send data during the validity period. Or control information while it is valid
  • the data may be sent or sent by using the other TTI length subsets that are pre-configured or default by the base station. Specifically, when the receiving base station sends the first message to the user equipment through the physical layer, the method is used. It can also include:
  • the third layer information is carried in the physical layer signaling, where the third information is used to indicate: a validity period of the first TTI length subset.
  • N TTI lengths receive or transmit data or control information on N channels, or receive or transmit data or control information according to a default TTI length; the fourth information is used to determine a second TTI in the second TTI length set A subset of length.
  • an embodiment of the present invention provides a base station, where the base station may include:
  • each TTI length set in the at least one TTI length set includes: M different TTI length subsets, each TTI length subset includes: N TTI lengths, The N TTIs are in one-to-one correspondence with N channels; the M is an integer greater than or equal to 2, and the N is an integer greater than or equal to 1;
  • a sending unit configured to send first information to the user equipment by using physical layer signaling, where the first information is used to determine a first TTI length subset in the first TTI length set configured by the configuration unit;
  • the TTI length set is any set of TTI lengths in the at least one TTI length set;
  • a transmitting unit configured to receive or send data or control information on the N channels according to the N TTI lengths in the first TTI length subset.
  • the TTI length is notified to the user equipment through the physical layer. Since the physical layer signaling is flexible, the physical layer signaling time is fast and can be well adapted to the radio resource control (RRC) signaling. The delay requirement of the service data and/or the requirement of the change of the wireless channel. Therefore, the method of using the physical layer signaling to notify the user equipment of the TTI length in the present case can improve the overall performance of the system, and avoids the existing RRC configuration information. A problem that informs the system that the TTI length is degraded.
  • RRC radio resource control
  • each functional unit in the third aspect may refer to the function of the behavior of the base station in the TTI length notification method provided by the first aspect.
  • the embodiment of the present invention provides a user equipment, where the user equipment may include:
  • each TTI length set includes: M different TTI length subsets, each TTI length subset includes: N a TTI length, the N TTI lengths are in one-to-one correspondence with N channels; the M is an integer greater than or equal to 2, and the N is an integer greater than or equal to 1;
  • a transmitting unit configured to receive or send data or control information on the N channels according to the N TTI lengths in the first TTI length subset.
  • the TTI length notified by the base station is received by the physical layer.
  • the physical layer signaling is flexible, the physical layer signaling time is fast and can be well adapted to the radio resource control (RRC) signaling.
  • RRC radio resource control
  • the delay requirement of the service data and/or the requirement of the change of the wireless channel. Therefore, the method of using the physical layer signaling to notify the user equipment of the TTI length in the present case can improve the overall performance of the system, and avoids the existing RRC configuration information. A problem that informs the system that the TTI length is degraded.
  • each functional unit in the fourth aspect may refer to the function of the behavior of the user equipment in the TTI length notification method provided by the second aspect.
  • the functional modules described in the foregoing third and fourth aspects may be implemented by hardware, or may be implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the receiver is used to complete the function of the receiving unit
  • the transmitter is used to complete the function of the transmitting unit
  • the processor is used to complete the function of the processing unit
  • the processor, the transmitter, the receiver, and the memory are connected through the bus and complete each other. Communication.
  • an embodiment of the present invention provides a base station, where the base station may include:
  • each TTI length set in the at least one TTI length set includes: M different TTI length subsets, each TTI length subset includes: N TTI lengths, The N TTIs are in one-to-one correspondence with N channels; the M is an integer greater than or equal to 2, and the N is an integer greater than or equal to 1;
  • a transmitter configured to send first information to the user equipment by using physical layer signaling, where the first information is used to determine a first TTI length subset in the first TTI length set configured by the processor;
  • the TTI length set is any set of TTI lengths in the at least one TTI length set;
  • the transmitter is further configured to send data or control information to the user equipment on the N channels according to the N TTI lengths in the first TTI length subset;
  • a receiver configured to receive data or control information sent by the user equipment on the N channels according to the N TTI lengths in the first TTI length subset.
  • the TTI length is notified to the user equipment through the physical layer. Since the physical layer signaling is flexible, the physical layer signaling time is fast and can be well adapted to the radio resource control (RRC) signaling. The delay requirement of the service data and/or the requirement of the change of the wireless channel. Therefore, the method of using the physical layer signaling to notify the user equipment of the TTI length in the present case can improve the overall performance of the system, and avoids the existing RRC configuration information. A problem that informs the system that the TTI length is degraded.
  • RRC radio resource control
  • the implementation manner of the processor in the fifth aspect may refer to the implementation manner of the configuration unit in the third aspect
  • the implementation manner of the receiver and the transmitter may refer to the implementation manner of the sending unit and the transmission unit in the third aspect.
  • the embodiment of the present invention provides a user equipment, where the user equipment may include:
  • a receiver configured to receive first information that is sent by the base station by using physical layer signaling, where the first information is used to determine a first TTI length subset in the first TTI length set, where the first TTI length set is at least one Any set of TTI lengths in the set of TTI lengths; the set of at least one TTI length configured by the base station, each TTI length set packet Include: M different subsets of TTI lengths, each TTI length subset includes: N TTI lengths, the N TTI lengths are one-to-one corresponding to N channels; the M is an integer greater than or equal to 2, Said N is an integer greater than or equal to 1;
  • the receiver is further configured to receive data or control information sent by the base station on N channels according to N TTI lengths in the first TTI length subset;
  • the transmitter is further configured to send data or control information to the base station on the N channels according to the N TTI lengths in the first TTI length subset.
  • the TTI length notified by the base station is received by the physical layer.
  • the physical layer signaling is flexible, the physical layer signaling time is fast and can be well adapted to the radio resource control (RRC) signaling.
  • RRC radio resource control
  • the delay requirement of the service data and/or the requirement of the change of the wireless channel. Therefore, the method of using the physical layer signaling to notify the user equipment of the TTI length in the present case can improve the overall performance of the system, and avoids the existing RRC configuration information. A problem that informs the system that the TTI length is degraded.
  • the implementation manner of the receiver and the transmitter in the sixth aspect may refer to the implementation manner of the receiving unit and the transmitting unit in the fourth aspect.
  • the embodiment of the present invention provides a TTI length notification method, device, and system, where a base station pre-configures at least one TTI length set; each of the at least one TTI length set includes: M different a TTI length subset, each TTI length subset includes: N TTI lengths, the N TTI lengths are one-to-one corresponding to N channels; the M is an integer greater than or equal to 2, and the N is greater than or equal to An integer of 1; the first information of the first TTI length subset in the first TTI length set is sent to the user equipment by using physical layer signaling, and the base station and the user equipment are in accordance with the N TTI lengths in the first TTI length subset. Receive or transmit data or control information on N channels.
  • the TTI length is notified to the user equipment through the physical layer. Since the physical layer signaling is flexible, the physical layer signaling time is fast and can be well adapted to the radio resource control (RRC) signaling. The delay requirement of the service data and/or the change requirement of the wireless channel, therefore, the method of using the physical layer signaling to notify the user equipment of the TTI length in the present case can improve the overall performance of the system and avoid The problem of the system performance degradation caused by the TTI length notified by the RRC configuration signaling is eliminated.
  • RRC radio resource control
  • FIG. 1 is a schematic structural diagram of a system according to an embodiment of the present disclosure
  • FIG. 2 is a flowchart of a method for notifying a TTI length according to an embodiment of the present invention
  • FIG. 3 is a structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 4 is a structural diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 5 is a structural diagram of a TTI length notification system according to an embodiment of the present invention.
  • the core idea of the present invention is that the base station side pre-configures some Transmission Time Interval (TTI) lengths that may be adopted by the channel, and then passes through the physical layer according to the delay requirement of the transmitted service data and/or the change requirement of the wireless channel.
  • the signaling sends a notification to the user equipment, so that the user equipment determines a TTI length that satisfies the requirement from some pre-configured TTI lengths, and uses the TTI length to receive or send data or control information between the base station and the base station;
  • the signaling is relatively flexible. Compared with the Radio Resource Control (RRC) signaling, the transmission time is fast, and can be well adapted to the delay requirement of the service data and/or the change requirement of the wireless channel. Therefore, in this case,
  • the method of using physical layer signaling to notify the user equipment of the TTI length can improve the overall performance of the system.
  • RRC Radio Resource Control
  • the TTI length notification method provided by the embodiment of the present invention can be applied to any multi-TTI communication system, such as: a second generation mobile communication (2nd Generation; 2G) system, and a third generation mobile communication ( 3rd Generation; 3G) systems and next-generation communication systems, Global System for Mobile communications (GSM) systems, Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) System, Wideband Code Division Multiple Access Wireless (WCDMA) system, Frequency Division Multiple Addressing (FDMA) system, Orthogonal Frequency Division Multiple Access (OFDMA) system a single carrier FDMA (Single Carrier-FDMA; SC-FDMA) system, a General Packet Radio Service (GPRS) system, or a Long Term Evolution (LTE) system, specifically, the system
  • GSM Global System for Mobile communications
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access Wireless
  • FDMA Frequency Division Multiple Addressing
  • OFDMA Orthogonal
  • the system architecture may include: a base station 10 and a user equipment (User Equipment) 20, and a radio resource may be established between the base station 10 and the user equipment 20.
  • a radio resource control (RRC) connection where the base station 10 can refer to a device in the access network that communicates with the user equipment 20 over one or more sectors on the air interface, such as an evolved base station in LTE.
  • RRC radio resource control
  • the user equipment 20 may be a wireless terminal for communicating with one or more base stations via a radio access network (RAN), such as:
  • RAN radio access network
  • the user equipment 20 can be: Personal Communication Service (PCS) telephone, cordless telephone, Session Initiation Protocol (SIP) telephone, Wireless Local Loop (WLL) station, personal digital assistant ( Personal Digital Assistant; PDA), tablet, laptop, Ultra-mobile Personal Computer (UMPC), netbook A personal digital assistant (Personal Digital Assistant, PDA) to any other terminal apparatus.
  • PCS Personal Communication Service
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • PDA Personal Digital Assistant
  • tablet laptop
  • Ultra-mobile Personal Computer UMPC
  • netbook A personal digital assistant Personal Digital Assistant
  • the base station 10 may include: a transmitter 1011, a processor 1012, a memory 1013, a receiver 1015, and at least one communication bus 1014.
  • the bus 1014 is used to implement the connection and mutual communication between these devices;
  • the user equipment 20 may include: a receiver 2011, a processor 2012, a memory 2013, a transmitter 2015, and at least one communication bus 2014 for implementing these devices. Interconnection and mutual communication;
  • the transmitter 1011 and the receiver 1015 can be integrated into the transceiver unit of the base station 10 for performing data interaction with the external network element.
  • the transmitter 1011 of the base station 10 can send data or control information to the user equipment 20;
  • the machine 1015 can receive the transmitted data or control information of the user equipment 20;
  • the receiver 2011 and the transmitter 2015 can be integrated into the transceiver unit of the user equipment 20 for data interaction with the external network element.
  • the receiver 2011 of the user equipment 20 can receive data or control information sent by the base station 10;
  • the machine 2015 can send data or control information to the base station 10;
  • the processor 1012 and the processor 2012 may be a central processing unit (CPU), may be an Application Specific Integrated Circuit (ASIC), or be configured to implement an embodiment of the present invention.
  • CPU central processing unit
  • ASIC Application Specific Integrated Circuit
  • DSPs digital singular processors
  • FPGAs Field Programmable Gate Arrays
  • the memory 1013 and the memory 2013 may be a volatile memory such as a random-access memory (RAM) or a non-volatile memory such as a read-only memory (read).
  • RAM random-access memory
  • ROM read-only memory
  • flash memory hard disk drive (HDD) or solid-state drive (SSD); or a combination of the above types of memory.
  • HDD hard disk drive
  • SSD solid-state drive
  • the communication bus 1014 and the communication bus 2014 can be divided into an address bus, a data bus, a control bus, etc., and can be an Industry Standard Architecture (ISA) bus or a Peripheral Component (Peripheral Component). PCI) bus or extended Industry Standard Architecture (EISA) bus. For ease of representation, only one thick line is shown in Figure 1, but it does not mean that there is only one bus or one type of bus.
  • ISA Industry Standard Architecture
  • PCI Peripheral Component
  • EISA extended Industry Standard Architecture
  • the TTI length subset includes the TTI length corresponding to the two channels, and the TTI length set includes The M different combinations of TTI lengths that may be used for these two channel combinations.
  • the processor 1012 detects the delay requirement of the transmitted service data and/or the change of the wireless channel.
  • the transmitter 1011 is notified to enable the transmitter 1011 to pass.
  • the physical layer signaling transmits first information for determining the first TTI length subset in the TTI length set to the receiver 2011 of the user equipment 20, and controls the transmitter 1011 to adopt N TTIs in the first TTI length subset.
  • the length transmits data or control information to the receiver 2011 on N channels, and the control receiver 1015 receives data or control information transmitted by the transmitter 2015 on the N channels using N TTI lengths in the first subset of TTI lengths;
  • the first subset of TTI lengths meets the latency requirements of the traffic data and/or the requirements of the wireless channel, so that the user can be provided with perceptible throughput and lower latency and/or higher. s speed.
  • the first information that the transmitter 1011 sends to the user equipment by using the physical layer signaling may be the TTI length value in the first TTI length subset, or may be the indication information indicating the first TTI length subset;
  • the transmitter 1011 sends the determination to the receiver 2011 through the physical layer signaling.
  • the transmitter 1011 is also used to:
  • the radio resource control RRC configuration signaling Sending, by the radio resource control RRC configuration signaling, the at least one TTI length set to the user equipment, so that the processor 2012 of the user equipment 20 receives the indication information from the receiver 2011, and receives at least the received information according to the indication information. Determining the first TTI length subset in a TTI length set, and further controlling the receiver 2011 to receive data or control information sent by the transmitter 1011 of the base station 10 according to the TTI length in the first TTI length subset, and controlling the transmitter 2015 to The receiver 1015 of the base station 10 transmits data or control information.
  • the transmitter 1011 may send, by using a common search space in a Physical Downlink Control Channel (PDCCH), a group of user equipments, corresponding to the user equipment 20. a second information of the information, so that the processor 2012 of the user equipment 20 performs blind solution on the second information, and acquires first information corresponding to itself;
  • PDCCH Physical Downlink Control Channel
  • the first information is sent to the user equipment by using the non-PDCCH, for example, the first information may be sent to the user equipment by using a physical hybrid indicator channel (Physical Hybrid Indicator Channel).
  • a physical hybrid indicator channel Physical Hybrid Indicator Channel
  • an effective period may also be set for the determined first TTI length subset, that is, the base station 10 and the user equipment 20 are allowed to adopt the TTI length of the first TTI length subset during the validity period. Sending data or control information, and outside the validity period, it may adopt other TTI length subsets pre-configured or default by the base station 10 to receive or send data or control information;
  • the transmitter 1011 may also carry the validity period of the first TTI length subset in the physical layer signaling, so that the user equipment 20 combines the validity period. Flexible use of TTI length to receive or send data or control information.
  • the validity period may be pre-configured by the base station 10, and may also be predefined in the communication system standard.
  • N channels in the embodiments of the present invention may be N channels in the following channels: a Physical Downlink Shared Channel (PDSCH) and a Physical Uplink Shared Channel (PUSCH). ), Physical Uplink Control Channel (PUCCH).
  • PDSCH Physical Downlink Shared Channel
  • PUSCH Physical Uplink Shared Channel
  • PUCCH Physical Uplink Control Channel
  • the embodiment of the present invention provides a system for notifying a user equipment of a TTI length
  • the system may include a base station and a user equipment, where the base station pre-configures at least one TTI length set; and the at least one TTI length set
  • Each TTI length set includes: M different TTI length subsets, each TTI length subset includes: N TTI lengths, the N TTI lengths are one-to-one corresponding to N channels; and the M is greater than or equal to An integer of 2, the N is an integer greater than or equal to 1; the first information of the first TTI length subset in the first TTI length set is sent to the user equipment by using physical layer signaling, and the base station and the user equipment follow the
  • the N TTI lengths in a subset of TTI lengths receive or transmit data or control information on N channels.
  • the TTI length is notified to the user equipment through the physical layer. Since the physical layer signaling is flexible, the physical layer signaling time is fast and can be well adapted to the radio resource control (RRC) signaling. The delay requirement of the service data and/or the requirement of the change of the wireless channel. Therefore, the method of using the physical layer signaling to notify the user equipment of the TTI length in the present case can improve the overall performance of the system, and avoids the existing RRC configuration information. A problem that informs the system that the TTI length is degraded.
  • RRC radio resource control
  • embodiment 1 shows and describes in detail the TTI length notification process provided by the present invention in the form of steps, wherein the illustrated steps may be performed in addition to the system architecture shown in FIG. Executed in a set of computer systems that execute instructions. Moreover, although logical sequences are shown in the figures, in some cases the steps shown or described may be performed in a different order than the ones described herein.
  • FIG. 2 is a flowchart of a TTI length notification method according to an embodiment of the present invention.
  • the base station and the user equipment shown in FIG. 1 are mutually performed. As shown in FIG. 2, the method may include the following steps:
  • the base station configures at least one TTI length set; each TTI length set in the at least one TTI length set includes: M different TTI length subsets, each TTI length subset includes: N TTI lengths, The N TTI lengths are in one-to-one correspondence with N channels; the M is an integer greater than or equal to 2, and the N is an integer greater than or equal to 1.
  • the base station may configure at least one TTI length set by using high layer signaling, or predefine at least one TTI length set by using a standard.
  • the N channels may be any N channels of the following: a Physical Downlink Shared Channel (PDSCH), a Physical Uplink Shared Channel (PUSCH), and a Physical Uplink Control Channel ( Physical Uplink Control Channel (PUCCH); can also be other physical channels, which are not listed here.
  • PDSCH Physical Downlink Shared Channel
  • PUSCH Physical Uplink Shared Channel
  • PUCCH Physical Uplink Control Channel
  • the two channels may be: a PCSCH channel and a PUSCH channel, or may be: a PCSCH channel.
  • the TTI length is set to a set of M different lengths of TTIs of a single channel, and when N is an integer greater than 1, the TTI length set is M possible values of TTI lengths of multiple channel combinations. set.
  • step S101 takes the TTI configuration in the LTE system as an example to describe step S101:
  • each subframe is divided into two 0.5 ms slots, for a normal cyclic prefix (normal CP).
  • Each time slot is composed of 7 Orthogonal Frequency Division Multiplexing (OFDM) symbols; for extended CP (extended CP), each time slot is composed of 6 OFDM symbols (below)
  • OFDM Orthogonal Frequency Division Multiplexing
  • each time slot is composed of 6 OFDM symbols (below)
  • the OFDM symbol is simply referred to as a symbol.
  • the TTI length of the previous LTE system is the duration of one subframe, that is, 1 ms. With the evolution of the communication technology, the short TTI supported by the data transmission can reach the duration of one slot, and even 1 OFDM The length of the symbol.
  • the TTI is performed on the channel.
  • the following set of 2 TTI lengths may be used as the TTI length set of the channel: ⁇ 1ms, 0.5ms ⁇ , ⁇ 1ms, 1 symbol ⁇ , ⁇ 1ms, 2 symbols ⁇ , ⁇ 1ms, 3/4 symbols ⁇ , ⁇ 1 symbol, 0.5ms ⁇ , ⁇ 2 symbols, 1 symbol ⁇ , ⁇ 2 symbols, 0.5ms ⁇ , ⁇ 3/4 symbols, 1 symbol ⁇ , ⁇ 3/4 Symbol, 0.5ms ⁇ , ⁇ 2 symbols, 3/4 symbols ⁇ ; at this time, if the TTI length set configured for the channel is ⁇ 2 symbols, 1 symbol ⁇ , and the first information can determine the set The length of the TTI of the two symbols, the base station and the user equipment receive or transmit data or control information according to the TTI of two symbols;
  • the channel supports four different TTI lengths, that is, the TTI of the channel may have four different values as needed
  • the following set of four TTI lengths may be included.
  • the TTI length set of the channel ⁇ 1ms, 1 symbol, 2 symbols, 0.5ms ⁇ , ⁇ 1ms, 3/4 symbol, 2 symbols, 0.5ms ⁇ , ⁇ 1 symbol, 3/4 symbol, 2 Symbols, 0.5ms ⁇ , ⁇ 1ms, 3/4 symbols, 2 symbols, 1 symbol ⁇ , ⁇ 1ms, 3/4 symbol, 0.5ms, 1 symbol ⁇ .
  • the set of TTI lengths of the PDSCH channel configuration may be the same as or different from the set of TTI lengths of the channel configuration of the PUSCH; similarly, the PDSCH channel and the PUCCH channel are configured.
  • the TTI length set may be the same or different.
  • the TTI length set of the PUCCH channel and the PUSCH channel configuration may be the same or different.
  • the TTI length subset in the TTI length set is a combination of TTI lengths of multiple channels, for example, if the TTI length of the downlink data channel (eg, PDSCH) is X.
  • the TTI length of the uplink data channel (eg, PUSCH) is Y, and the TTI length Z of the uplink control channel (eg, PUCCH) is used for the downlink data channel (eg, PDSCH), the uplink data channel (eg, PUSCH), and the uplink.
  • the TTI length subset is: ⁇ X, Y, Z ⁇ ; specifically, the values of X, Y, and Z may be the set ⁇ 1 Any of the symbols, 2 symbols, 3 symbols, 4 symbols, 0.5ms, 1ms ⁇ , or other values.
  • the base station can determine the possible values based on X, Y, and Z.
  • TTI length set corresponding to the three channels ⁇ 2 symbols, 0.5 ms, 0.5 ms ⁇ , ⁇ 2 symbols, 0.5 ms, 1ms ⁇ , ⁇ 0.5ms, 0.5ms, 0.5ms ⁇ , ⁇ 1 symbol, 2 symbols, 0.5ms ⁇ .
  • the base station sends the first information to the user equipment by using the physical layer signaling, where the first information is used to determine a first TTI length subset in the first TTI length set; the first TTI length set is the at least one Any set of TTI lengths in the TTI length set.
  • the first information may be each TTI length value in the first TTI length subset, and the TTI length value is determined by the base station according to the delay requirement of the service data and/or the change of the wireless channel from the configured TTI length set. TTI length value.
  • the first information may also be indication information indicating a subset of the first TTI length, thereby reducing the number of transmission bits and providing a transmission rate; for example, the TTI length set corresponding to a certain channel includes two TTI length subsets.
  • the first TTI length subset may be indicated by the number of bits 0 or 1. If the TTI length set corresponding to the channel includes 4 TTI length subsets, the first TTI of the 4 TTI length subsets may be indicated by 2 bits. A subset of length.
  • the method may further include: before the step S101, before the base station sends the first information to the user equipment by using the physical layer signaling, the method may further include:
  • the length subset further receives or transmits data or control information according to the TTI length in the first TTI length subset.
  • the sending, by the base station, the first information to the user equipment by using physical layer signaling may be any one of the following three manners:
  • Manner 1 The base station passes the public search in the physical downlink control channel PDCCH.
  • the second information is sent to a group of user equipments, where the second information includes: first information corresponding to the user equipment.
  • the base station may send the second information to a group of user equipments by using the format 1C/1a/3/3a with group RNTI or the new DCI format of the common search space, where the second information includes each user in the group of user equipments.
  • the device has one-to-one corresponding indication information, and the indication information is used to determine a subset of TTI lengths adopted by the user equipment.
  • Manner 2 The first information is sent to the user equipment by using a user equipment UE-specific search space in the PDCCH.
  • the first information may be sent by using a specific search space of the UE with a specific C-RNTI.
  • a certain field in the format 1a may be used to indicate a TTI length subset. This domain may be added or reused.
  • the first information may be sent to the user equipment by using a physical hybrid indicator channel (Physical Hybrid Indicator Channel), and the first information may be sent to the user equipment in an implicit manner or an explicit manner.
  • the implicit mode may be: mapping the channel identifier to the identifier of the user equipment, and after receiving the first information sent by the channel in the PHICH area, the user equipment may determine the identifier according to the identifier of the channel and the identifier of the channel.
  • the first information sent by the channel determines that the length of the TTI is the length of the TTI required for receiving or transmitting the data or the control information.
  • the explicit mode is: determining that the first information sent by one channel in the PHICH region determines the TTI length of the user equipment. information.
  • the user equipment determines, according to the first information sent by the base station, the first TTI length subset.
  • the user equipment may determine the first TTI length subset in two different manners; for example, when the first information is the value of each TTI length in the first TTI length subset, The user equipment can directly determine the first TTI length subset after receiving the first information.
  • the user equipment When the first information is the indication information indicating the first TTI length subset, the user equipment further needs to correspond to the channel sent by the base station by using the RRC configuration signaling according to the indication information.
  • a subset of the first TTI length is determined in the set of TTI lengths.
  • S104 The base station and the user equipment receive or send data or control information on the N channels by using N TTI lengths in the first TTI length subset.
  • the base station and the user equipment can receive or send data or control information on the N channels by using N TTI lengths in the first TTI length subset through the wireless communication network.
  • a validity period may be set for the determined first TTI length subset, that is, the base station and the user equipment allow the TTI length in the first TTI length subset to receive or send data during the validity period.
  • the base station may pre-configure or default other TTI length subsets to receive or send data or control information; specifically, when the first message is sent to the user equipment through the physical layer,
  • the method can also include:
  • the third layer information is used to indicate the validity period of the first TTI length subset, so that the user equipment can flexibly use the TTI length to receive or send data or control information in conjunction with the validity period.
  • the validity period may be pre-configured by the base station, or may be predefined in the communication system standard.
  • the value may be any one of 10ms, 40ms, 80ms, 160ms, 320ms, and 640ms.
  • N TTI lengths receive or transmit data or control information on N channels, or receive or send data or control information according to the default TTI length;
  • the fourth information is used to determine a second TTI length subset in the second TTI length set, and the default TTI length may be a TTI length of 1 ms.
  • the embodiment of the present invention provides a method for notifying a TTI length, where a base station pre-configures at least one TTI length set; each TTI length set in the at least one TTI length set includes: M different TTI length subsets.
  • Each TTI length subset includes: N TTI lengths, the N TTI lengths are in one-to-one correspondence with N channels; the M is an integer greater than or equal to 2, and the N is an integer greater than or equal to 1;
  • the TTI length is notified to the user equipment through the physical layer.
  • the physical layer signaling is flexible, the physical layer signaling time is fast and can be well adapted to the radio resource control (RRC) signaling.
  • RRC radio resource control
  • the delay requirement of the service data and/or the change requirement of the wireless channel provide the user-perceived throughput and the lower delay/higher rate. Therefore, in this case, the physical layer signaling is used to notify the user equipment of the TTI length.
  • the method can improve the overall performance of the system well, and avoids the problem that the system performance degradation caused by the TTI length is notified by the RRC configuration signaling.
  • FIG. 3 is a structural diagram of a base station 30 according to an embodiment of the present invention. The method for performing the method corresponding to the base station in the first embodiment is performed. As shown in FIG. 3, the base station 30 may include:
  • the configuration unit 301 is configured to configure at least one TTI length set; each TTI length set in the at least one TTI length set includes: M different TTI length subsets, each TTI length subset includes: N TTI lengths
  • the N TTI lengths are in one-to-one correspondence with N channels; the M is an integer greater than or equal to 2, and the N is an integer greater than or equal to 1.
  • the sending unit 302 is configured to send first information to the user equipment by using physical layer signaling, where the first information is used to determine a first TTI length subset in the first TTI length set configured by the configuration unit 301;
  • the first TTI length set is any one of the at least one TTI length set.
  • the transmitting unit 303 is configured to receive or send data or control information on the N channels according to the N TTI lengths in the first TTI length subset.
  • the configuration unit 301 may configure at least one TTI length set by using high layer signaling, or predefine at least one TTI length set by using a standard.
  • the N channels may be any N channels of the following: a Physical Downlink Shared Channel (PDSCH), a Physical Uplink Shared Channel (PUSCH), and a physical Physical Uplink Control Channel (PUCCH); other physical channels, which are not listed here;
  • PDSCH Physical Downlink Shared Channel
  • PUSCH Physical Uplink Shared Channel
  • PUCCH physical Physical Uplink Control Channel
  • the first information may be each TTI length value in the first TTI length subset, and the TTI length value is determined by the base station according to the delay requirement of the service data and/or the change of the wireless channel from the configured TTI length set. TTI length value.
  • the first information may also be indication information indicating a subset of the first TTI length, thereby reducing the number of transmission bits and providing a transmission rate; for example, the TTI length set corresponding to a certain channel includes two TTI length subsets.
  • the first TTI length subset may be indicated by the number of bits 0 or 1. If the TTI length set corresponding to the channel includes 4 TTI length subsets, the first TTI of the 4 TTI length subsets may be indicated by 2 bits. A subset of length.
  • the sending unit 302 is further configured to:
  • the sending unit 302 sends the at least one TTI length set to the user equipment by using RRC configuration signaling, before the first information is sent to the user equipment by using the physical layer signaling, so that the user
  • the device determines the first TTI length subset from the received at least one TTI length set according to the indication information, and further receives or sends data or control according to the TTI length in the first TTI length subset. information.
  • the sending unit 302 is specifically configured to send the first information to the user equipment in any one of the following three manners:
  • Manner 1 The second information is sent to a group of user equipments by using a common search space in the physical downlink control channel PDCCH, where the second information includes: first information corresponding to the user equipment.
  • the second information may be sent to a group of user equipments by using a format 1C/1a/3/3a with group RNTI or a new DCI format of the common search space, where the second information includes each user equipment in the group of user equipments.
  • One-to-one corresponding indication information, and the indication information is used to determine a subset of TTI lengths adopted by the user equipment.
  • Manner 2 The user equipment UE-specific search space in the PDCCH is used for the foregoing The user device sends the first message.
  • the first information may be sent by using a specific search space of the UE with a specific C-RNTI.
  • a certain field in the format 1a may be used to indicate a TTI length subset. This domain may be added or reused.
  • the first information may be sent to the user equipment by using a physical hybrid indicator channel (Physical Hybrid Indicator Channel), and the first information may be sent to the user equipment in an implicit manner or an explicit manner.
  • the implicit mode may be: mapping the channel identifier to the identifier of the user equipment, and after receiving the first information sent by the channel in the PHICH area, the user equipment may determine the identifier according to the identifier of the channel and the identifier of the channel.
  • the first information sent by the channel determines that the length of the TTI is the length of the TTI required for receiving or transmitting the data or the control information.
  • the explicit mode is: determining that the first information sent by one channel in the PHICH region determines the TTI length of the user equipment. information.
  • a validity period may be set for the determined first TTI length subset, that is, the base station and the user equipment allow the TTI length in the first TTI length subset to receive or send data during the validity period.
  • the base station may pre-configure or default other TTI length subsets to receive or send data or control information; specific:
  • the physical layer signaling may further carry the third information, where the third information is used to indicate: the validity period of the first TTI length subset, thereby enabling The user equipment can flexibly use the TTI length to receive or transmit data or control information in conjunction with the validity period.
  • the validity period may be pre-configured by the base station, or may be predefined in the communication system standard.
  • the value may be any one of 10ms, 40ms, 80ms, 160ms, 320ms, and 640ms.
  • N TTI lengths are received or transmitted on N channels Data or control information, or receive or send data or control information according to the default TTI length;
  • the fourth information is used to determine a second TTI length subset in the second TTI length set, and the default TTI length may be a TTI length of 1 ms.
  • an embodiment of the present invention provides a base station, configured with at least one TTI length set; each TTI length set in the at least one TTI length set includes: M different TTI length subsets, each TTI length sub- The set includes: N TTI lengths, the N TTI lengths are in one-to-one correspondence with N channels; the M is an integer greater than or equal to 2, and the N is an integer greater than or equal to 1;
  • the user equipment sends the first information of the first TTI length subset in the first TTI length set, and the base station and the user equipment receive or send data or control on the N channels according to the N TTI lengths in the first TTI length subset. information.
  • the TTI length is notified to the user equipment through the physical layer. Since the physical layer signaling is flexible, the physical layer signaling time is fast and can be well adapted to the radio resource control (RRC) signaling. The delay requirement of the service data and/or the requirement of the change of the wireless channel. Therefore, the method of using the physical layer signaling to notify the user equipment of the TTI length in the present case can improve the overall performance of the system, and avoids the existing RRC configuration information. A problem that informs the system that the TTI length is degraded.
  • RRC radio resource control
  • FIG. 4 is a schematic diagram of a user equipment 40 for performing the method performed by the user equipment 40 in the first embodiment of the present invention. As shown in FIG. 4, the user equipment 40 includes:
  • the receiving unit 401 is configured to receive first information that is sent by the base station by using physical layer signaling, where the first information is used to determine a first TTI length subset in the first TTI length set, where the first TTI length set is at least Any set of TTI lengths in a set of TTI lengths; the at least one set of TTI lengths configured by the base station, each set of TTI lengths comprising: M different subsets of TTI lengths, each subset of TTI lengths comprising: N
  • the length of the TTI is one-to-one corresponding to the N channels; the M is an integer greater than or equal to 2, and the N is an integer greater than or equal to 1.
  • the transmitting unit 402 is configured to receive or send data or control information on the N channels according to the N TTI lengths in the first TTI length subset.
  • the N channels may be any N channels of the following: a Physical Downlink Shared Channel (PDSCH), a Physical Uplink Shared Channel (PUSCH), and a Physical Uplink Control Channel ( Physical Uplink Control Channel (PUCCH); can also be other physical channels, which are not listed here.
  • PDSCH Physical Downlink Shared Channel
  • PUSCH Physical Uplink Shared Channel
  • PUCCH Physical Uplink Control Channel
  • the first information may be each TTI length value in the first TTI length subset, and the TTI length value is determined by the base station according to the delay requirement of the service data and/or the change of the wireless channel from the configured TTI length set. TTI length value.
  • the first information may also be indication information indicating a subset of the first TTI length, thereby reducing the number of transmission bits and providing a transmission rate; for example, the TTI length set corresponding to a certain channel includes two TTI length subsets.
  • the first TTI length subset may be indicated by the number of bits 0 or 1. If the TTI length set corresponding to the channel includes 4 TTI length subsets, the first TTI of the 4 TTI length subsets may be indicated by 2 bits. A subset of length.
  • the receiving unit 401 is further configured to:
  • the receiving unit 401 is specifically configured to:
  • the receiving base station sends the second information to the group of user equipments by using a common search space in the physical downlink control channel PDCCH, where the second information includes: first information corresponding to the user equipment;
  • the receiving base station sends the first information to the user equipment by using a user equipment UE-specific search space in the PDCCH;
  • the receiving base station sends the first information to the user equipment by using the non-PDCCH.
  • the first TTI length may also be determined.
  • the set sets an expiration period, that is, the base station and the user equipment allow the TTI length in the first TTI length subset to receive or transmit data or control information during the validity period, and outside the validity period, the base station may be pre-configured or default.
  • the subset of TTI lengths receives or sends data or control information; specific:
  • the third layer information may be further included in the physical layer signaling, where the third information is used to indicate: the validity period of the first TTI length subset,
  • the user equipment can flexibly use the TTI length to receive or transmit data or control information in conjunction with the validity period.
  • the validity period may be pre-configured by the base station, or may be predefined in the communication system standard.
  • the value may be any one of 10ms, 40ms, 80ms, 160ms, 320ms, and 640ms.
  • N TTI lengths receive or transmit data or control information on N channels, or receive or send data or control information according to the default TTI length;
  • the fourth information is used to determine a second TTI length subset in the second TTI length set, and the default TTI length may be a TTI length of 1 ms.
  • an embodiment of the present invention provides a user equipment, which receives first information that is sent by a base station by using physical layer signaling, where the first information is used to determine a first TTI length subset in a first TTI length set.
  • the first TTI length set is any one of the at least one TTI length set; the at least one TTI length set is configured by the base station, and each TTI length set includes: M different TTI length subsets, each The TTI length subset includes: N TTI lengths, the N TTI lengths are one-to-one corresponding to N channels; the M is an integer greater than or equal to 2, and the N is an integer greater than or equal to 1, according to The N TTI lengths in the first TTI length subset receive or transmit data or control information on N channels. In this way, the TTI length is notified to the user equipment through the physical layer. Since the physical layer signaling is flexible, the physical layer signaling time is fast and can be well adapted to the radio resource control (RRC) signaling.
  • RRC radio resource control
  • the delay requirement of the service data and/or the change requirement of the wireless channel therefore,
  • the method of using the physical layer signaling to notify the user equipment of the TTI length in the present case can improve the overall performance of the system, and avoids the problem that the system performance degradation caused by the TTI length is notified through the RRC configuration signaling.
  • FIG. 5 is a structural diagram of a TTI length notification system according to an embodiment of the present invention, for performing the method described in Embodiment 1, as shown in Figure 5, the system may include: a base station 30 and a user equipment 40;
  • the base station 30 has the same function as the base station 30 described in the second embodiment, and the user equipment 40 is the same as the user equipment 40 described in the third embodiment, and details are not described herein again.
  • the embodiment of the present invention provides a TTI length notification system, configured to notify a user equipment of a TTI length
  • the system may include a base station and a user equipment, where the base station pre-configures at least one TTI length set; the at least one TTI
  • Each TTI length set in the length set includes: M different TTI length subsets, each TTI length subset includes: N TTI lengths, and the N TTI lengths are in one-to-one correspondence with N channels; For an integer greater than or equal to 2, the N is an integer greater than or equal to 1; the first information of determining the first TTI length subset in the first TTI length set, the base station and the user equipment are sent to the user equipment by physical layer signaling.
  • Data or control information is received or transmitted on the N channels according to the N TTI lengths in the first TTI length subset.
  • the TTI length is notified to the user equipment through the physical layer.
  • the physical layer signaling is flexible, the physical layer signaling time is fast and can be well adapted to the radio resource control (RRC) signaling.
  • RRC radio resource control
  • the delay requirement of the service data and/or the requirement of the change of the wireless channel. Therefore, the method of using the physical layer signaling to notify the user equipment of the TTI length in the present case can improve the overall performance of the system, and avoids the existing RRC configuration information. A problem that informs the system that the TTI length is degraded.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device described above The embodiment is merely illustrative.
  • the division of the unit is only a logical function division, and the actual implementation may have another division manner, for example, multiple units or components may be combined or may be integrated into another system. Or some features can be ignored or not executed.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically separate, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the software functional units described above are stored in a storage medium and include instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform portions of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, and the program code can be stored. Medium.
  • the storage medium may include a read only memory, a random access memory, a magnetic disk or an optical disk, or the like.

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Abstract

La présente invention a trait au domaine technique de la communication radio. La présente invention concerne un procédé, un dispositif et un système de notification de longueur d'intervalle de temps de transmission (TTI) permettant de traiter un problème dans lequel un TTI n'est pas apte à s'adapter à un changement d'un canal radio et entraîne des performances de système réduites lors d'une utilisation d'une signalisation RRC en vue d'informer un utilisateur du TTI. Le procédé consiste : à configurer une station de base avec au moins un ensemble de longueurs de TTI, chacune de l'ensemble de longueurs de TTI du ou des ensembles de longueurs de TTI comprenant M sous-ensembles de longueurs de TTI différents, chacun des sous-ensembles de longueurs de TTI comprenant N longueurs de TTI, et les N longueurs de TTI correspondant respectivement une à une à N canaux, M étant un nombre entier supérieur ou égal à 2, et N étant un nombre entier supérieur ou égal à 1; et à envoyer, à une unité d'équipement utilisateur, et au moyen d'une signalisation de couche physique, un premier sous-ensemble de longueurs de TTI permettant de déterminer un premier ensemble de longueurs de TTI, autorisant ainsi une transmission duplex à recevoir ou à envoyer, sur les N canaux et sur la base des N longueurs de TTI dans le premier sous-ensemble de longueurs de TTI, des données ou des informations de commande.
PCT/CN2016/073704 2016-02-05 2016-02-05 Procédé, dispositif et système de notification de longueur d'intervalle de temps de transmission (tti) WO2017133011A1 (fr)

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CN102740468A (zh) * 2011-04-02 2012-10-17 华为技术有限公司 分配信道资源的方法、基站设备、终端设备和通信系统
CN104620629A (zh) * 2012-09-12 2015-05-13 华为技术有限公司 用于自适应发送时间间隔(tti)结构的系统和方法
CN104468030A (zh) * 2014-08-26 2015-03-25 上海华为技术有限公司 一种数据传输方法、用户设备及基站

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