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WO2017133011A1 - Tti长度的通知方法、设备及系统 - Google Patents

Tti长度的通知方法、设备及系统 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
Application number
PCT/CN2016/073704
Other languages
English (en)
French (fr)
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.)
Filing date
Publication date
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/zh
Publication of WO2017133011A1 publication Critical patent/WO2017133011A1/zh

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Classifications

    • 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 signalling, 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—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • 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—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH

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

本发明公开了TTI长度的通知方法、设备及系统，涉及无线通信技术领域，以解决现有通过RRC信令给用户通知TTI，使TTI不能适应无线信道的变化，导致系统的性能下降的问题。本发明提供的方法包括：基站配置至少一个TTI长度集合；所述至少一个TTI长度集合中的每个TTI长度集合包含：M个不同的TTI长度子集，每个TTI长度子集包含：N个TTI长度，所述N个TTI长度与N个信道一一对应；所述M为大于或等于2的整数，N为大于或等于1的整数；通过物理层信令向用户设备发送用于确定第一TTI长度集合中的第一TTI长度子集，使通信双发按照所述第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息。

Description

TTI长度的通知方法、设备及系统 技术领域
本发明涉及无线通信技术领域，尤其涉及一种传输时间间隔(Transmission Time Interval，TTI)长度的通知方法、设备及系统。
背景技术
随着通信技术的演进，现有通信系统可能存在多个不同长度的TTI，例如，之前的长期演进(Long Term Evolution，LTE)系统仅支持一种长度的TTI，如1ms，而现在由于不同数据可能有不同的时延要求、不同用户可能有不同的覆盖需求、不同信道也可能有不同的覆盖要求，为了满足这些不同的要求，使得LTE系统可能存在多个不同的长度的TTI，如：高时延的数据采用长TTI，而低时延的数据则需要采用短TTI；又例如，现有通用移动通信系统(Universal Mobile Telecommunications System，UMTS)也存在两种不同长度的TTI：10ms和2ms。虽然，采用不同长度的TTI可以满足不同的通信需求，但是，如何给用户通知TTI，成为一个亟需解决的问题。
目前，主用通过将TTI携带在无线资源控制(Radio Resource Control，RRC)信令中通知给用户，使用户按照接收到的RRC信令中的TTI收发数据或控制信息；其中，由于RRC信令的发送时长一般需要至少一百毫秒级别，也就是说，TTI需要一百多毫秒才能发生变化。
但是，在实际应用中，由于无线信道变化是非常快的(通常在一百多毫秒内可能存在多次不同的变化)，使得适应该无线信道的TTI也变化非常快，如：信噪比比较差的信道，需要长TTI，而质量比较好的信道，需要短TTI，此时，若用RRC信令通知TTI，显然地，使TTI不能适应无线信道的变化，如：在无线信道变为信噪比比较差的信道时，不能通过RRC信令及时通知对方更换为长TTI，使得通信双发仍采用短TTI收发数据或控制信息，使数据或控制信 息无法正确被解调，从而导致系统的性能下降。
发明内容
本发明的实施例提供一种TTI长度的通知方法、设备及系统，以解决现有通过RRC信令给用户通知TTI，使TTI不能适应无线信道的变化，导致系统的性能下降的问题。
为达到上述目的，本发明的实施例采用如下技术方案：
第一方面，本发明实施例提供一种传输时间间隔TTI长度的通知方法，可以包括：
基站配置至少一个TTI长度集合；所述至少一个TTI长度集合中的每个TTI长度集合包含：M个不同的TTI长度子集，每个TTI长度子集包含：N个TTI长度，所述N个TTI长度与N个信道一一对应；所述M为大于或等于2的整数，所述N为大于或等于1的整数；
所述基站通过物理层信令向用户设备发送第一信息，所述第一信息用于确定第一TTI长度集合中的第一TTI长度子集；所述第一TTI长度集合为所述至少一个TTI长度集合中的任一TTI长度集合；
所述基站按照所述第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息。
如此，通过物理层向用户设备通知TTI长度，由于物理层信令比较灵活，相对于无线资源控制(Radio Resource Control，RRC)信令而言，物理层信令发送时间快，可以很好地适应业务数据的时延要求和/或无线信道的变化要求，所以，本案中采用物理层信令向用户设备通知TTI长度的方法可以很好地提高系统的整体性能，避免了现有通过RRC配置信令通知TTI长度导致的系统性能下降的问题。
其中，所述N个信道可以为下述信道中的N个信道：
物理下行共享信道PDSCH、物理上行共享信道PUSCH、物理上行控制信道PUCCH。
其中，第一信息可以为第一TTI长度子集中的各TTI长度值， 且该TTI长度值为基站根据业务数据的时延的要求和/或无线信道的变化从配置的TTI长度集合中确定出的TTI长度值。
优选的，第一信息还可以为指示第一TTI长度子集的指示信息，以此降低传输比特数，提供传输速率；因此，在第一方面的一种可实现方式中，当第一信息为指示第一TTI长度子集的指示信息时，在所述基站配置至少一个TTI长度集合之后，通过物理层信令向用户设备发送第一信息之前，所述方法还包括：
所述基站通过无线资源控制RRC配置信令向所述用户设备发送所述至少一个TTI长度集合。
在第一方面的又一种可实现方式中，基站通过物理层信令向用户设备发送第一信息可以包括：
通过物理下行控制信道PDCCH中的公共搜索空间向一组用户设备发送第二信息，所述第二信息包含：与所述用户设备相对应的第一信息；
或者，通过PDCCH中的用户设备UE专用搜索空间向所述用户设备发送第一信息；
或者，通过非PDCCH向用户设备发送第一信息。
此外，在本发明实施例中，还可以为确定出的第一TTI长度子集设置一个有效期，即在该有效期内基站和用户设备才允许采用第一TTI长度子集中的TTI长度收或发数据或控制信息，而在该有效期外，可能采用基站预先配置的或默认的其他的TTI长度子集收或发数据或控制信息；具体的，在通过物理层向用户设备发送第一消息时，所述方法还可以包括：
在物理层信令中携带第三信息，所述第三信息用于指示：第一TTI长度子集的有效期，进而使用户设备可以结合该有效期灵活的使用TTI长度收或发数据或控制信息。
作为与基站侧相对应的用户设备侧，在第二方面，本发明实施例又提供一种传输时间间隔TTI长度的通知方法，所述方法可以包括：
用户设备接收基站通过物理层信令发送的第一信息，所述第一信息用于确定第一TTI长度集合中的第一TTI长度子集，所述第一TTI长度集合为至少一个TTI长度集合中的任一TTI长度集合；所述至少一个TTI长度集合由所述基站配置，每个TTI长度集合包含：M个不同的TTI长度子集，每个TTI长度子集包含：N个TTI长度，所述N个TTI长度与N个信道一一对应；所述M为大于或等于2的整数，所述N为大于或等于1的整数；
所述用户设备按照所述第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息。
如此，通过物理层向用户设备通知TTI长度，由于物理层信令比较灵活，相对于无线资源控制(Radio Resource Control，RRC)信令而言，物理层信令发送时间快，可以很好地适应业务数据的时延要求和/或无线信道的变化要求，所以，本案中采用物理层信令向用户设备通知TTI长度的方法可以很好地提高系统的整体性能，避免了现有通过RRC配置信令通知TTI长度导致的系统性能下降的问题。
其中，第一信息可以为第一TTI长度子集中的各TTI长度值，且该TTI长度值为基站根据业务数据的时延的要求和/或无线信道的变化从配置的TTI长度集合中确定出的TTI长度值。
优选的，第一信息还可以为指示第一TTI长度子集的指示信息，以此降低传输比特数，提供传输速率；因此，在第二方面的一种可实现方式中，当第一信息为指示第一TTI长度子集的指示信息时，在所述用户设备接收基站通过物理层信令发送的第一信息之前，所述方法还包括：
所述用户设备接收所述基站通过无线资源控制RRC配置信令发送的所述至少一个TTI长度集合。
此外，在本发明实施例中，还可以为确定出的第一TTI长度子集设置一个有效期，即在该有效期内基站和用户设备才允许采用第一TTI长度子集中的TTI长度收或发数据或控制信息，而在该有效 期外，可能采用基站预先配置的或默认的其他的TTI长度子集收或发数据或控制信息；具体的，在第二方面接收基站通过物理层向用户设备发送第一消息时，所述方法还可以包括：
在物理层信令中携带第三信息，所述第三信息用于指示：第一TTI长度子集的有效期。
若在所述第一TTI长度子集的有效期之后，所述用户设备未接收到所述基站通过物理层信令发送的第四信息，则所述用户设备仍按照所述第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息，或者按照默认的TTI长度收或发数据或控制信息；所述第四信息用于确定第二TTI长度集合中的第二TTI长度子集。
第三方面，本发明实施例提供一种基站，所述基站可以包括：
配置单元，用于配置至少一个TTI长度集合；所述至少一个TTI长度集合中的每个TTI长度集合包含：M个不同的TTI长度子集，每个TTI长度子集包含：N个TTI长度，所述N个TTI长度与N个信道一一对应；所述M为大于或等于2的整数，所述N为大于或等于1的整数；
发送单元，用于通过物理层信令向用户设备发送第一信息，所述第一信息用于确定所述配置单元配置的第一TTI长度集合中的第一TTI长度子集；所述第一TTI长度集合为所述至少一个TTI长度集合中的任一TTI长度集合；
传输单元，用于按照所述第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息。
如此，通过物理层向用户设备通知TTI长度，由于物理层信令比较灵活，相对于无线资源控制(Radio Resource Control，RRC)信令而言，物理层信令发送时间快，可以很好地适应业务数据的时延要求和/或无线信道的变化要求，所以，本案中采用物理层信令向用户设备通知TTI长度的方法可以很好地提高系统的整体性能，避免了现有通过RRC配置信令通知TTI长度导致的系统性能下降的问题。
具体的，第三方面中各功能单元的实现方式可以参考第一方面提供的TTI长度的通知方法中基站的行为的功能。
第四方面，本发明实施例提供一种用户设备，所述用户设备可以包括：
接收单元，用于接收基站通过物理层信令发送的第一信息，所述第一信息用于确定第一TTI长度集合中的第一TTI长度子集，所述第一TTI长度集合为至少一个TTI长度集合中的任一TTI长度集合；所述至少一个TTI长度集合由所述基站配置，每个TTI长度集合包含：M个不同的TTI长度子集，每个TTI长度子集包含：N个TTI长度，所述N个TTI长度与N个信道一一对应；所述M为大于或等于2的整数，所述N为大于或等于1的整数；
传输单元，用于按照所述第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息。
如此，通过物理层接收基站通知的TTI长度，由于物理层信令比较灵活，相对于无线资源控制(Radio Resource Control，RRC)信令而言，物理层信令发送时间快，可以很好地适应业务数据的时延要求和/或无线信道的变化要求，所以，本案中采用物理层信令向用户设备通知TTI长度的方法可以很好地提高系统的整体性能，避免了现有通过RRC配置信令通知TTI长度导致的系统性能下降的问题。
具体的，第四方面中各功能单元的实现方式可以参考第二方面提供的TTI长度的通知方法中用户设备的行为的功能。
需要说明的是，上述第三方面和第四方面所述功能模块可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。例如，接收机用于完成接收单元的功能，发送机用于完成发送单元的功能，处理器，用于完成处理单元的功能，处理器、发送机、接收机和存储器通过总线连接并完成相互间的通信。具体实现如下：
第五方面，本发明实施例提供一种基站，所述基站可以包括：
处理器，用于配置至少一个TTI长度集合；所述至少一个TTI长度集合中的每个TTI长度集合包含：M个不同的TTI长度子集，每个TTI长度子集包含：N个TTI长度，所述N个TTI长度与N个信道一一对应；所述M为大于或等于2的整数，所述N为大于或等于1的整数；
发送机，用于通过物理层信令向用户设备发送第一信息，所述第一信息用于确定所述处理器配置的第一TTI长度集合中的第一TTI长度子集；所述第一TTI长度集合为所述至少一个TTI长度集合中的任一TTI长度集合；
所述发送机，还用于按照所述第一TTI长度子集中的N个TTI长度在N个信道上向所述用户设备发送数据或控制信息；
接收机，用于按照所述第一TTI长度子集中的N个TTI长度在N个信道上接收所述用户设备发送的数据或控制信息。
如此，通过物理层向用户设备通知TTI长度，由于物理层信令比较灵活，相对于无线资源控制(Radio Resource Control，RRC)信令而言，物理层信令发送时间快，可以很好地适应业务数据的时延要求和/或无线信道的变化要求，所以，本案中采用物理层信令向用户设备通知TTI长度的方法可以很好地提高系统的整体性能，避免了现有通过RRC配置信令通知TTI长度导致的系统性能下降的问题。
具体的，第五方面中处理器的实现方式可参考第三方面中配置单元的实现方式，接收机和发送机的实现方式可参考第三方面中发送单元和传输单元的实现方式。
第六方面，本发明实施例提供一种用户设备，所述用户设备可以包括：
接收机，用于接收基站通过物理层信令发送的第一信息，所述第一信息用于确定第一TTI长度集合中的第一TTI长度子集，所述第一TTI长度集合为至少一个TTI长度集合中的任一TTI长度集合；所述至少一个TTI长度集合由所述基站配置，每个TTI长度集合包 含：M个不同的TTI长度子集，每个TTI长度子集包含：N个TTI长度，所述N个TTI长度与N个信道一一对应；所述M为大于或等于2的整数，所述N为大于或等于1的整数；
所述接收机，还用于按照所述第一TTI长度子集中的N个TTI长度在N个信道上接收所述基站发送的数据或控制信息；
发送机，还用于按照所述第一TTI长度子集中的N个TTI长度在N个信道上向所述基站发送数据或控制信息。
如此，通过物理层接收基站通知的TTI长度，由于物理层信令比较灵活，相对于无线资源控制(Radio Resource Control，RRC)信令而言，物理层信令发送时间快，可以很好地适应业务数据的时延要求和/或无线信道的变化要求，所以，本案中采用物理层信令向用户设备通知TTI长度的方法可以很好地提高系统的整体性能，避免了现有通过RRC配置信令通知TTI长度导致的系统性能下降的问题。
具体的，第六方面中接收机和发送机的实现方式可参考第四方面中接收单元和传输单元的实现方式。
由上可知，本发明实施例提供一种TTI长度的通知方法、设备及系统，基站预先配置至少一个TTI长度集合；所述至少一个TTI长度集合中的每个TTI长度集合包含：M个不同的TTI长度子集，每个TTI长度子集包含：N个TTI长度，所述N个TTI长度与N个信道一一对应；所述M为大于或等于2的整数，所述N为大于或等于1的整数；通过物理层信令向用户设备发送确定第一TTI长度集合中的第一TTI长度子集第一信息，基站和用户设备按照所述第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息。如此，通过物理层向用户设备通知TTI长度，由于物理层信令比较灵活，相对于无线资源控制(Radio Resource Control，RRC)信令而言，物理层信令发送时间快，可以很好地适应业务数据的时延要求和/或无线信道的变化要求，所以，本案中采用物理层信令向用户设备通知TTI长度的方法可以很好地提高系统的整体性能，避 免了现有通过RRC配置信令通知TTI长度导致的系统性能下降的问题。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种系统架构图；
图2为本发明实施例提供的一种TTI长度的通知方法的流程图；
图3为本发明实施例提供的一种基站的结构图；
图4为本发明实施例提供的一种用户设备的结构图；
图5为本发明实施例提供的一种TTI长度的通知系统的结构图。
具体实施方式
本发明的核心思想是：基站侧预先配置信道可能采用的一些传输时间间隔(Transmission Time Interval，TTI)长度，然后根据传输的业务数据的时延要求和/或无线信道的变化要求，通过物理层信令向用户设备发送通知，使用户设备从预先配置的一些TTI长度中确定满足该要求的TTI长度，采用该TTI长度在信道上与基站之间收或发数据或控制信息；由于，物理层信令比较灵活，相对于无线资源控制(Radio Resource Control，RRC)信令而言，发送时间快，可以很好地适应业务数据的时延要求和/或无线信道的变化要求，所以，本案中采用物理层信令向用户设备通知TTI长度的方法可以很好地提高系统的整体性能。
下面结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明的是，本发明实施例提供的TTI长度的通知方法可以适用于任何一个多TTI的通信系统，如：可以为第二代移动通信(2nd Generation；2G)系统、第三代移动通信(3rd Generation；3G)系统和下一代通信系统、全球移动通信(Global System for Mobile communications；GSM)系统、码分多址(Code Division Multiple Access；CDMA)系统、时分多址(Time Division Multiple Access；TDMA)系统、宽带码分多址(Wideband Code Division Multiple Access Wireless；WCDMA)系统、频分多址(Frequency Division Multiple Addressing；FDMA)系统、正交频分多址(Orthogonal Frequency Division Multiple Access；OFDMA)系统、单载波FDMA(Single Carrier-FDMA；SC-FDMA)系统、通用分组无线业务(General Packet Radio Service；GPRS)系统或长期演进(Long Term Evolution；LTE)系统中的任一系统，具体的，该方法适用于哪个多TTI长度的通信系统，本发明实施例对此不进行限定，本发明实施例仅以LTE系统为例，对TTI长度的通知方法进行说明。
参照图1，为本发明实施例提供的系统架构图；如图1所示，该系统架构可以包括：基站10和用户设备(User Equipment)20，基站10和用户设备20之间可以建立无线资源控制(Radio Resource Control，RRC)连接；其中，基站10可以是指接入网中在空中接口上通过一个或多个扇区与用户设备20通信的设备，如：可以为LTE中的演进型基站(NodeB或eNB或e-NodeB)，本发明并不限定；用户设备20，可以是无线终端，用于经无线接入网(Radio Access Network；RAN)与一个或多个基站进行通信，如：用户设备20可以为：个人通信业务(Personal Communication Service；PCS)电话、无绳电话、会话发起协议(Session Initiation Protocol；SIP)话机、无线本地环路(Wireless Local Loop；WLL)站、个人数字助理(Personal Digital Assistant；PDA)、平板电脑、笔记本电脑、超级移动个人计算机(Ultra-mobile Personal Computer，UMPC)、上网本、个人数字助理(Personal Digital Assistant，PDA)等任一终端设备。
具体的，为了实现本发明提供的TTI长度的通知方法，如图1所示，所述基站10可以包括：发送机1011、处理器1012、存储器1013、接收机1015以及至少一个通信总线1014，通信总线1014用于实现这些装置之间的连接和相互通信；所述用户设备20可以包括：接收机2011、处理器2012、存储器2013、发送机2015以及至少一个通信总线2014，用于实现这些装置之间的连接和相互通信；
其中，发送机1011和接收机1015可集成为基站10的收发单元，用于与外部网元之间进行数据交互，如：基站10的发送机1011可向用户设备20发送数据或控制信息；接收机1015可接收用户设备20的发送的数据或控制信息；
接收机2011和发送机2015可集成为用户设备20的收发单元，用于与外部网元之间进行数据交互，如：用户设备20的接收机2011可接收基站10发送的数据或控制信息；发送机2015可向基站10发送数据或控制信息；
处理器1012、处理器2012，可能是一个中央处理器(central processing unit，简称为CPU)，也可以是特定集成电路(Application Specific Integrated Circuit，ASIC)，或者是被配置成实施本发明实施例的一个或多个集成电路，例如：一个或多个微处理器(digital singnal processor，DSP)，或，一个或者多个现场可编程门阵列(Field Programmable Gate Array，FPGA)。
存储器1013、存储器2013，可以是易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)；或者非易失性存储器(non-volatile memory)，例如只读存储器(read-only memory，ROM)，快闪存储器(flash memory)，硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)；或者上述种类的存储器的组合。
通信总线1014、通信总线2014可以分为地址总线、数据总线、控制总线等，可以是工业标准体系结构(Industry Standard Architecture，ISA)总线、外部设备互连(Peripheral Component， PCI)总线或扩展工业标准体系结构(Extended Industry Standard Architecture，EISA)总线等。为便于表示，图1中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
示例性的，在执行本发明提供的TTI长度的通知方法的过程中，所述处理器1012主要用于预先配置至少一个TTI长度集合；其中，每个TTI长度集合可以包含M个不同的取值，即M个不同的TTI长度子集，每个TTI长度子集又可以包含：与N个信道一一对应的N个TTI长度；所述M为大于或等于2的整数，所述N为大于或等于1的整数；例如，当N＝1，即为一个信道预先配置可能使用的TTI长度时，每个TTI长度子集包含1个TTI，此时，TTI长度集合中存在M个不同TTI长度，即相当于为该信道预先配置M个不同取值的TTI；当N大于1时，如为2时，TTI长度子集则包含与2个信道相对应的TTI长度，而TTI长度集合则包含这两个信道组合可能使用的M种不同的TTI长度组合。
随后，处理器1012会检测传输的业务数据的时延要求和/或无线信道的变化情况，当根据业务数据的时延要求和/无线信道发生变化时，通知发送机1011，使发送机1011通过物理层信令向用户设备20的接收机2011发送用于确定TTI长度集合中的第一TTI长度子集的第一信息，同时，并控制发送机1011采用第一TTI长度子集中的N个TTI长度在N个信道上向接收机2011发送数据或控制信息、以及控制接收机1015采用第一TTI长度子集中的N个TTI长度在N个信道上接收发送机2015发送的数据或控制信息；其中，所述第一TTI长度子集符合业务数据的时延要求和/或无线信道的变化要求，如此，可以尽可能地为用户提供可感知的吞吐量和更低的时延和/或更高的速率。
其中，发送机1011通过物理层信令发送给用户设备的第一信息可以为第一TTI长度子集中的各TTI长度值，也可以为指示第一TTI长度子集的指示信息；当该信息为指示第一TTI长度子集的指示信息时，在发送机1011通过物理层信令向接收机2011发送确定第一 TTI长度子集的信息之前，发送机1011还用于：
通过无线资源控制RRC配置信令向所述用户设备发送所述至少一个TTI长度集合，以便用户设备20的处理器2012在接收机2011接收到该指示信息后，根据该指示信息从接收到的至少一个TTI长度集合中确定出该第一TTI长度子集，进而根据第一TTI长度子集中的TTI长度控制接收机2011接收基站10的发送机1011发送的数据或控制信息，以及控制发送机2015向基站10的接收机1015发送数据或控制信息。
可选的，在本发明实施例中，发送机1011可以通过物理下行控制信道(Physical Downlink Control Channel，PDCCH)中的公共搜索空间向一组用户设备发送包含与所述用户设备20相对应的第一信息的第二信息，以便用户设备20的处理器2012对第二信息进行盲解，获取与自身对应的第一信息；
或者，通过PDCCH中的用户设备UE专用搜索空间向所述用户设备20的发送第一信息；
或者，通过非PDCCH向用户设备发送第一信息，如：可以通过物理混合重传指示信道(Physical Hybrid Indicator Channel，PHICH区域中的信道向用户设备发送第一信息。
此外，在本发明实施例中，还可以为确定出的第一TTI长度子集设置一个有效期，即在该有效期内基站10和用户设备20才允许采用第一TTI长度子集中的TTI长度收或发数据或控制信息，而在该有效期外，可能采用基站10预先配置的或默认的其他的TTI长度子集收或发数据或控制信息；
具体的，发送机1011在通过物理层向用户设备20的接收机2011发送第一消息时，还可以同时在物理层信令中携带第一TTI长度子集的有效期，使用户设备20结合该有效期灵活的使用TTI长度收或发数据或控制信息。
其中，有效期可以为基站10预先配置的，还可以为通信系统标准中预定义的。
需要说明的是，本发明实施例所述的N个信道可以为下述信道中的N个信道：物理下行共享信道(Physical Downlink Shared Channel，PDSCH)、物理上行共享信道(Physical Uplink Shared Channel，PUSCH)、物理上行控制信道(Physical Uplink Control Channel，PUCCH)。
由上可知，本发明实施例提供一种系统，用于向用户设备通知TTI长度，所述系统可以包括基站和用户设备，基站预先配置至少一个TTI长度集合；所述至少一个TTI长度集合中的每个TTI长度集合包含：M个不同的TTI长度子集，每个TTI长度子集包含：N个TTI长度，所述N个TTI长度与N个信道一一对应；所述M为大于或等于2的整数，所述N为大于或等于1的整数；通过物理层信令向用户设备发送确定第一TTI长度集合中的第一TTI长度子集第一信息，基站和用户设备按照所述第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息。如此，通过物理层向用户设备通知TTI长度，由于物理层信令比较灵活，相对于无线资源控制(Radio Resource Control，RRC)信令而言，物理层信令发送时间快，可以很好地适应业务数据的时延要求和/或无线信道的变化要求，所以，本案中采用物理层信令向用户设备通知TTI长度的方法可以很好地提高系统的整体性能，避免了现有通过RRC配置信令通知TTI长度导致的系统性能下降的问题。
为了便于描述，以下实施例一以步骤的形式示出并详细描述了本发明提供的TTI长度的通知过程，其中，示出的步骤除在图1所示的系统架构中执行外，还可以在一组可执行指令的计算机系统中执行。此外，虽然在图中示出了逻辑顺序，但是在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤。
实施例一
图2为本发明实施例提供的一种TTI长度的通知方法的流程图，由图1所示的基站和用户设备交互执行，如图2所示，所述方法可以包括以下步骤：
S101：基站配置至少一个TTI长度集合；所述至少一个TTI长度集合中的每个TTI长度集合包含：M个不同的TTI长度子集，每个TTI长度子集包含：N个TTI长度，所述N个TTI长度与N个信道一一对应；所述M为大于或等于2的整数，所述N为大于或等于1的整数。
可选的，基站可以通过高层信令配置至少一个TTI长度集合，或者通过标准预定义至少一个TTI长度集合。
其中，所述N个信道可以为下述信道中的任意N个信道：物理下行共享信道(Physical Downlink Shared Channel，PDSCH)、物理上行共享信道(Physical Uplink Shared Channel，PUSCH)、物理上行控制信道(Physical Uplink Control Channel，PUCCH)；还可以为其他一些物理信道，在此不再一一列举。
例如：当N＝1时，可以为PDSCH信道，也可以为PUSCH信道，还可以为PUCCH信道；当N＝2时，这两个信道可以为：PCSCH信道和PUSCH信道，也可以为：PCSCH信道和PUCCH信道，还可以为：PUSCH信道和PUCCH信道；当N＝3时，可以为PDSCH信道、PUSCH信道和PUCCH信道。
因此，当N＝1时，TTI长度集合为单个信道的M个不同长度的TTI的集合，当N为大于1的整数，TTI长度集合为多个信道组合的TTI长度的M种可能取值的集合。
下面，以LTE系统中的TTI配置为例，对步骤S101进行说明：
由于，在当前的LTE系统中，一个子帧的时长为1毫秒(ms)，每个子帧又被分为两个0.5ms的时隙(slot)，对于普通循环前缀(Normal cyclic prefix，normal CP)，每个时隙由7个正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)符号组成；对于长CP(Extended cyclic prefix，extended CP)，每个时隙由6个OFDM符号组成(以下将OFDM符号简称为符号)，目前，以前LTE系统的TTI长度为一个子帧的时长，即1ms，随着通信技术的演进，数据传输可支持的短TTI可达到1个时隙的时长，甚至1个OFDM 符号的时长。
所以，在本发明实施例中，对于某个信道而言，若该信道支持2个不同的TTI长度，即该信道的TTI可以根据需要存在2个不同的取值，则在对该信道进行TTI长度集合配置时，可以将下述包含2个TTI长度的集合作为该信道的TTI长度集合：{1ms，0.5ms}、{1ms，1个符号}、{1ms，2个符号}、{1ms，3/4个符号}、{1个符号，0.5ms}、{2个符号，1个符号}、{2个符号，0.5ms}、{3/4符号，1个符号}、{3/4符号，0.5ms}、{2个符号，3/4个符号}；此时，若为该信道配置的TTI长度集合为{2个符号，1个符号}，且第一信息可以确定出该集合中的2个符号的TTI长度，则基站和用户设备按照2个符号的TTI收或发数据或控制信息；
若该信道支持4个不同的TTI长度，即该信道的TTI可以根据需要存在4个不同的取值，则在对该信道进行TTI长度集合配置时，可以将下述包含4个TTI长度的集合作为该信道的TTI长度集合：{1ms，1个符号，2个符号，0.5ms}、{1ms，3/4符号，2个符号，0.5ms}、{1个符号，3/4符号，2个符号，0.5ms}、{1ms，3/4符号，2个符号，1个符号}、{1ms，3/4符号，0.5ms，1个符号}。
需要说明的，在对单个信道进行TTI长度集合的配置时，PDSCH信道配置的TTI长度集合，可以与PUSCH这个信道配置的TTI长度集合相同，也可以不同；同理，PDSCH信道与PUCCH信道配置的TTI长度集合可以相同，也可以不同，此外；PUCCH信道与PUSCH信道配置的TTI长度集合可以相同，也可以不同。
此外，对多个信道进行TTI长度集合配置时，TTI长度集合中的TTI长度子集则会是多个信道的TTI长度的组合，例如，若下行数据信道(如：PDSCH)的TTI长度是X，上行数据信道(如：PUSCH)的TTI长度是Y，上行控制信道(如：PUCCH)的TTI长度Z，则当对下行数据信道(如：PDSCH)、上行数据信道(如：PUSCH)和上行控制信道(如：PUCCH)进行TTI长度集合配置时，其中的TTI长度子集为：{X，Y，Z}；具体的，X、Y、Z的取值可以是集合{1 个符号，2个符号，3个符号，4个符号，0.5ms，1ms}中的任一取值，也可能是其他值，此时，基站可以根据X、Y、Z的可能取值确定出下述4个不同的TTI长度子集，将该4个TTI长度子集作为这三个信道对应的TTI长度集合：{2个符号，0.5ms，0.5ms}，{2个符号，0.5ms，1ms}，{0.5ms，0.5ms，0.5ms}，{1个符号，2个符号，0.5ms}。
S102：基站通过物理层信令向用户设备发送第一信息，所述第一信息用于确定第一TTI长度集合中的第一TTI长度子集；所述第一TTI长度集合为所述至少一个TTI长度集合中的任一TTI长度集合。
其中，第一信息可以为第一TTI长度子集中的各TTI长度值，且该TTI长度值为基站根据业务数据的时延的要求和/或无线信道的变化从配置的TTI长度集合中确定出的TTI长度值。
优选的，第一信息还可以为指示第一TTI长度子集的指示信息，以此降低传输比特数，提供传输速率；例如：某一信道对应的TTI长度集合中包含2个TTI长度子集，则可以用比特数0或1来指示第一TTI长度子集，若该信道对应的TTI长度集合中包含4个TTI长度子集，则可以用2bit指示这4个TTI长度子集中的第一TTI长度子集。
可理解的是，当第一信息为指示第一TTI长度子集的指示信息时，在步骤S101之后，基站通过物理层信令向用户设备发送第一信息之前，所述方法还可以包括：
通过RRC配置信令向所述用户设备发送所述至少一个TTI长度集合，以便用户设备在接收到该指示信息后，根据该指示信息从接收到的至少一个TTI长度集合中确定出该第一TTI长度子集，进而根据第一TTI长度子集中的TTI长度收或发数据或控制信息。
可选的，基站通过物理层信令向用户设备发送第一信息可以为下述三种方式中的任一方式：
方式一：基站通过物理下行控制信道PDCCH中的公共搜索空 间向一组用户设备发送第二信息，所述第二信息包含：与所述用户设备相对应的第一信息。
例如：基站可以采用公共搜索空间的format 1C/1a/3/3a with group RNTI或新的DCI格式向一组用户设备发送第二信息，其中，第二信息中包含与该组用户设备中各个用户设备一一对应的指示信息，且该指示信息用于确定用户设备采用的TTI长度子集。
方式二：通过PDCCH中的用户设备UE专用搜索空间向所述用户设备发送第一信息。
例如：可以采用UE的specific搜索空间with specific C-RNTI发送第一信息，如：可以用format 1a中的某个域来指示TTI长度子集，这个域可以是新增的，也可以是重用已有的field。
方式三：通过非PDCCH向用户设备发送第一信息
例如：可以通过物理混合重传指示信道(Physical Hybrid Indicator Channel，PHICH区域中的信道向用户设备发送第一信息，具体的，可以采用隐性方式或显性方式向用户设备发送第一信息，其中，所述隐性方式可以为：将信道标识与用户设备的标识进行映射，使用户设备接收到PHICH区域中的一信道发送的第一信息后，可以根据自身标识和该信道的标识，确定该信道发送的第一信息确定出TTI长度为自身收或发数据或控制信息需要的TTI长度；所述显性方式：指定PHICH区域中的一信道发送的第一信息为该用户设备确定TTI长度的信息。
S103：用户设备根据基站发送的第一信息，确定出第一TTI长度子集。
相对应第一信息的两种不同取值，用户设备也可以有两种不同的方式确定第一TTI长度子集；如：当第一信息为第一TTI长度子集中各TTI长度取值时，用户设备可以在接收到第一信息，直接就可以确定出第一TTI长度子集；
当第一信息为指示第一TTI长度子集的指示信息时，用户设备还需要根据该指示信息，在基站通过RRC配置信令发送的信道对应 的TTI长度集合中确定出第一TTI长度子集。
S104：基站和用户设备之间采用第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息。
可选的，基站和用户设备之间可以通过无线通信网络，采用第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息。
此外，在本发明实施例中，还可以为确定出的第一TTI长度子集设置一个有效期，即在该有效期内基站和用户设备才允许采用第一TTI长度子集中的TTI长度收或发数据或控制信息，而在该有效期外，可能采用基站预先配置的或默认的其他的TTI长度子集收或发数据或控制信息；具体的，在通过物理层向用户设备发送第一消息时，所述方法还可以包括：
在物理层信令中携带第三信息，所述第三信息用于指示：第一TTI长度子集的有效期，进而使用户设备可以结合该有效期灵活的使用TTI长度收或发数据或控制信息。
其中，有效期可以为基站预先配置的，还可以为通信系统标准中预定义的，例如，可以为10ms、40ms、80ms、160ms、320ms、640ms中的任一取值。
若在所述第一TTI长度子集的有效期之后，所述用户设备未接收到所述基站通过物理层信令发送的第四信息，则所述用户设备仍按照所述第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息，或者按照默认的TTI长度收或发数据或控制信息；
其中，所述第四信息用于确定第二TTI长度集合中的第二TTI长度子集，默认的TTI长度可以是1ms的TTI长度。
由上可知，本发明实施例提供一种TTI长度的通知方法，基站预先配置至少一个TTI长度集合；所述至少一个TTI长度集合中的每个TTI长度集合包含：M个不同的TTI长度子集，每个TTI长度子集包含：N个TTI长度，所述N个TTI长度与N个信道一一对应；所述M为大于或等于2的整数，所述N为大于或等于1的整数；通 过物理层信令向用户设备发送确定第一TTI长度集合中的第一TTI长度子集第一信息，基站和用户设备按照所述第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息。如此，通过物理层向用户设备通知TTI长度，由于物理层信令比较灵活，相对于无线资源控制(Radio Resource Control，RRC)信令而言，物理层信令发送时间快，可以很好地适应业务数据的时延要求和/或无线信道的变化要求，提供用户可感知的吞吐量和更低的时延/更高的速率，所以，本案中采用物理层信令向用户设备通知TTI长度的方法可以很好地提高系统的整体性能，避免了现有通过RRC配置信令通知TTI长度导致的系统性能下降的问题。
实施例二
图3为本发明实施例提供的一种基站30的结构图，用于执行实施例一中与基站相对应的方法，如图3所示，所述基站30可以包括：
配置单元301，用于配置至少一个TTI长度集合；所述至少一个TTI长度集合中的每个TTI长度集合包含：M个不同的TTI长度子集，每个TTI长度子集包含：N个TTI长度，所述N个TTI长度与N个信道一一对应；所述M为大于或等于2的整数，所述N为大于或等于1的整数。
发送单元302，用于通过物理层信令向用户设备发送第一信息，所述第一信息用于确定所述配置单元301配置的第一TTI长度集合中的第一TTI长度子集；所述第一TTI长度集合为所述至少一个TTI长度集合中的任一TTI长度集合。
传输单元303，用于按照所述第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息。
可选的，配置单元301可以通过高层信令配置至少一个TTI长度集合，或者通过标准预定义至少一个TTI长度集合。
其中，所述N个信道可以为下述信道中的任意N个信道：物理下行共享信道(Physical Downlink Shared Channel，PDSCH)、物理上行共享信道(Physical Uplink Shared Channel，PUSCH)、物理上 行控制信道(Physical Uplink Control Channel，PUCCH)；还可以为其他一些物理信道，在此不再一一列举；
其中，第一信息可以为第一TTI长度子集中的各TTI长度值，且该TTI长度值为基站根据业务数据的时延的要求和/或无线信道的变化从配置的TTI长度集合中确定出的TTI长度值。
优选的，第一信息还可以为指示第一TTI长度子集的指示信息，以此降低传输比特数，提供传输速率；例如：某一信道对应的TTI长度集合中包含2个TTI长度子集，则可以用比特数0或1来指示第一TTI长度子集，若该信道对应的TTI长度集合中包含4个TTI长度子集，则可以用2bit指示这4个TTI长度子集中的第一TTI长度子集。
可理解的是，当第一信息为指示第一TTI长度子集的指示信息时，所述发送单元302还用于：
在配置单元301配置至少一个TTI长度集合之后，发送单元302通过物理层信令向用户设备发送第一信息之前，通过RRC配置信令向所述用户设备发送所述至少一个TTI长度集合，以便用户设备在接收到该指示信息后，根据该指示信息从接收到的至少一个TTI长度集合中确定出该第一TTI长度子集，进而根据第一TTI长度子集中的TTI长度收或发数据或控制信息。
可选的，发送单元302具体用于通过下述三种方式中的任一方式向用户设备发送第一信息：
方式一：通过物理下行控制信道PDCCH中的公共搜索空间向一组用户设备发送第二信息，所述第二信息包含：与所述用户设备相对应的第一信息。
例如：可以采用公共搜索空间的format 1C/1a/3/3a with group RNTI或新的DCI格式向一组用户设备发送第二信息，其中，第二信息中包含与该组用户设备中各个用户设备一一对应的指示信息，且该指示信息用于确定用户设备采用的TTI长度子集。
方式二：通过PDCCH中的用户设备UE专用搜索空间向所述用 户设备发送第一信息。
例如：可以采用UE的specific搜索空间with specific C-RNTI发送第一信息，如：可以用format 1a中的某个域来指示TTI长度子集，这个域可以是新增的，也可以是重用已有的field。
方式三：通过非PDCCH向用户设备发送第一信息
例如：可以通过物理混合重传指示信道(Physical Hybrid Indicator Channel，PHICH区域中的信道向用户设备发送第一信息，具体的，可以采用隐性方式或显性方式向用户设备发送第一信息，其中，所述隐性方式可以为：将信道标识与用户设备的标识进行映射，使用户设备接收到PHICH区域中的一信道发送的第一信息后，可以根据自身标识和该信道的标识，确定该信道发送的第一信息确定出TTI长度为自身收或发数据或控制信息需要的TTI长度；所述显性方式：指定PHICH区域中的一信道发送的第一信息为该用户设备确定TTI长度的信息。
此外，在本发明实施例中，还可以为确定出的第一TTI长度子集设置一个有效期，即在该有效期内基站和用户设备才允许采用第一TTI长度子集中的TTI长度收或发数据或控制信息，而在该有效期外，可能采用基站预先配置的或默认的其他的TTI长度子集收或发数据或控制信息；具体的：
在发送单元302通过物理层向用户设备发送第一消息时，所述物理层信令中还可以携带第三信息，所述第三信息用于指示：第一TTI长度子集的有效期，进而使用户设备可以结合该有效期灵活的使用TTI长度收或发数据或控制信息。
其中，有效期可以为基站预先配置的，还可以为通信系统标准中预定义的，例如，可以为10ms、40ms、80ms、160ms、320ms、640ms中的任一取值。
若在所述第一TTI长度子集的有效期之后，所述用户设备未接收到所述基站通过物理层信令发送的第四信息，则所述用户设备仍按照所述第一TTI长度子集中的N个TTI长度在N个信道上收或发 数据或控制信息，或者按照默认的TTI长度收或发数据或控制信息；
其中，所述第四信息用于确定第二TTI长度集合中的第二TTI长度子集，默认的TTI长度可以是1ms的TTI长度。
由上可知，本发明实施例提供一种基站，配置至少一个TTI长度集合；所述至少一个TTI长度集合中的每个TTI长度集合包含：M个不同的TTI长度子集，每个TTI长度子集包含：N个TTI长度，所述N个TTI长度与N个信道一一对应；所述M为大于或等于2的整数，所述N为大于或等于1的整数；通过物理层信令向用户设备发送确定第一TTI长度集合中的第一TTI长度子集第一信息，基站和用户设备按照所述第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息。如此，通过物理层向用户设备通知TTI长度，由于物理层信令比较灵活，相对于无线资源控制(Radio Resource Control，RRC)信令而言，物理层信令发送时间快，可以很好地适应业务数据的时延要求和/或无线信道的变化要求，所以，本案中采用物理层信令向用户设备通知TTI长度的方法可以很好地提高系统的整体性能，避免了现有通过RRC配置信令通知TTI长度导致的系统性能下降的问题。
实施例三
图4为本发明实施例提供的一种用户设备40，用于执行实施例一中用户设备40执行的方法，如图4所示，所述用户设备40包括：
接收单元401，用于接收基站通过物理层信令发送的第一信息，所述第一信息用于确定第一TTI长度集合中的第一TTI长度子集，所述第一TTI长度集合为至少一个TTI长度集合中的任一TTI长度集合；所述至少一个TTI长度集合由所述基站配置，每个TTI长度集合包含：M个不同的TTI长度子集，每个TTI长度子集包含：N个TTI长度，所述N个TTI长度与N个信道一一对应；所述M为大于或等于2的整数，所述N为大于或等于1的整数。
传输单元402，用于按照所述第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息。
其中，所述N个信道可以为下述信道中的任意N个信道：物理下行共享信道(Physical Downlink Shared Channel，PDSCH)、物理上行共享信道(Physical Uplink Shared Channel，PUSCH)、物理上行控制信道(Physical Uplink Control Channel，PUCCH)；还可以为其他一些物理信道，在此不再一一列举。
其中，第一信息可以为第一TTI长度子集中的各TTI长度值，且该TTI长度值为基站根据业务数据的时延的要求和/或无线信道的变化从配置的TTI长度集合中确定出的TTI长度值。
优选的，第一信息还可以为指示第一TTI长度子集的指示信息，以此降低传输比特数，提供传输速率；例如：某一信道对应的TTI长度集合中包含2个TTI长度子集，则可以用比特数0或1来指示第一TTI长度子集，若该信道对应的TTI长度集合中包含4个TTI长度子集，则可以用2bit指示这4个TTI长度子集中的第一TTI长度子集。
可理解的是，当第一信息为指示第一TTI长度子集的指示信息时，所述接收单元401，还用于：
在所述接收单元401接收基站通过物理层信令发送的第一信息之前，接收所述基站通过无线资源控制RRC配置信令发送的所述至少一个TTI长度集合，在接收到该指示信息后，根据该指示信息从接收到的至少一个TTI长度集合中确定出该第一TTI长度子集，进而根据第一TTI长度子集中的TTI长度收或发数据或控制信息。
可选的，接收单元401具体用于：
接收基站通过物理下行控制信道PDCCH中的公共搜索空间向一组用户设备发送第二信息，所述第二信息包含：与所述用户设备相对应的第一信息；
或者，接收基站通过PDCCH中的用户设备UE专用搜索空间向所述用户设备发送第一信息；
或者，接收基站通过非PDCCH向用户设备发送第一信息。
此外，在本发明实施例中，还可以为确定出的第一TTI长度子 集设置一个有效期，即在该有效期内基站和用户设备才允许采用第一TTI长度子集中的TTI长度收或发数据或控制信息，而在该有效期外，可能采用基站预先配置的或默认的其他的TTI长度子集收或发数据或控制信息；具体的：
在接收单元401接收基站通过物理层向用户设备发送第一消息的同时，在物理层信令中还可以携带第三信息，所述第三信息用于指示：第一TTI长度子集的有效期，进而用户设备可以结合该有效期灵活的使用TTI长度收或发数据或控制信息。
其中，有效期可以为基站预先配置的，还可以为通信系统标准中预定义的，例如，可以为10ms、40ms、80ms、160ms、320ms、640ms中的任一取值。
若在所述第一TTI长度子集的有效期之后，所述用户设备未接收到所述基站通过物理层信令发送的第四信息，则所述用户设备仍按照所述第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息，或者按照默认的TTI长度收或发数据或控制信息；
其中，所述第四信息用于确定第二TTI长度集合中的第二TTI长度子集，默认的TTI长度可以是1ms的TTI长度。
由上可知，本发明实施例提供一种用户设备，接收基站通过物理层信令发送的第一信息，所述第一信息用于确定第一TTI长度集合中的第一TTI长度子集，所述第一TTI长度集合为至少一个TTI长度集合中的任一TTI长度集合；所述至少一个TTI长度集合由所述基站配置，每个TTI长度集合包含：M个不同的TTI长度子集，每个TTI长度子集包含：N个TTI长度，所述N个TTI长度与N个信道一一对应；所述M为大于或等于2的整数，所述N为大于或等于1的整数，按照所述第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息。如此，通过物理层向用户设备通知TTI长度，由于物理层信令比较灵活，相对于无线资源控制(Radio Resource Control，RRC)信令而言，物理层信令发送时间快，可以很好地适应业务数据的时延要求和/或无线信道的变化要求，所以， 本案中采用物理层信令向用户设备通知TTI长度的方法可以很好地提高系统的整体性能，避免了现有通过RRC配置信令通知TTI长度导致的系统性能下降的问题。
实施例四
图5为本发明实施例提供的一种TTI长度的通知系统的结构图，用于执行实施例一所述的方法，如图5所示，所述系统可以包括：基站30和用户设备40；
其中，基站30与实施例二所述的基站30的功能相同，用户设备40与实施例三所述的用户设备40相同，在此不再一一赘述。
由上可知，本发明实施例提供一种TTI长度的通知系统，用于向用户设备通知TTI长度，所述系统可以包括基站和用户设备，基站预先配置至少一个TTI长度集合；所述至少一个TTI长度集合中的每个TTI长度集合包含：M个不同的TTI长度子集，每个TTI长度子集包含：N个TTI长度，所述N个TTI长度与N个信道一一对应；所述M为大于或等于2的整数，所述N为大于或等于1的整数；通过物理层信令向用户设备发送确定第一TTI长度集合中的第一TTI长度子集第一信息，基站和用户设备按照所述第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息。如此，通过物理层向用户设备通知TTI长度，由于物理层信令比较灵活，相对于无线资源控制(Radio Resource Control，RRC)信令而言，物理层信令发送时间快，可以很好地适应业务数据的时延要求和/或无线信道的变化要求，所以，本案中采用物理层信令向用户设备通知TTI长度的方法可以很好地提高系统的整体性能，避免了现有通过RRC配置信令通知TTI长度导致的系统性能下降的问题。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的单元和系统的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，设备和方法，可以通过其它的方式实现。例如，以上所描述的设备 实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，简称ROM)、随机存取存储器(Random Access Memory，简称RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件(例如处理器)来完成，该程序可以存储于一计算机可读存储介质中，存储介质可以包括：只读存储器、随机存储器、磁盘或光盘等。
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换； 而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (45)

  1. 一种传输时间间隔TTI长度的通知方法，其特征在于，包括：
    基站配置至少一个TTI长度集合；所述至少一个TTI长度集合中的每个TTI长度集合包含：M个不同的TTI长度子集，每个TTI长度子集包含：N个TTI长度，所述N个TTI长度与N个信道一一对应；所述M为大于或等于2的整数，所述N为大于或等于1的整数；
    所述基站通过物理层信令向用户设备发送第一信息，所述第一信息用于确定第一TTI长度集合中的第一TTI长度子集；所述第一TTI长度集合为所述至少一个TTI长度集合中的任一TTI长度集合；
    所述基站按照所述第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息。
  2. 根据权利要求1所述的方法，其特征在于，所述第一信息为指示所述第一TTI长度子集的指示信息；在所述基站配置至少一个TTI长度集合之后，通过物理层信令向用户设备发送第一信息之前，所述方法还包括：
    所述基站通过无线资源控制RRC配置信令向所述用户设备发送所述至少一个TTI长度集合。
  3. 根据权利要求1或2所述的方法，其特征在于，所述基站通过物理层信令向用户设备发送第一信息包括：
    所述基站通过物理下行控制信道PDCCH中的公共搜索空间向一组用户设备发送第二信息，所述第二信息包含：与所述用户设备相对应的第一信息。
  4. 根据权利要求1或2所述的方法，其特征在于，所述基站通过物理层信令向用户设备发送第一信息包括：
    所述基站通过PDCCH中的用户设备UE专用搜索空间向所述用户设备发送第一信息。
  5. 根据权利要求1或2所述的方法，其特征在于，所述基站通过物理层信令向用户设备发送第一信息包括：
    所述基站通过非PDCCH向用户设备发送第一信息。
  6. 根据权利要求1-5任一项所述的方法，其特征在于，所述物理层信令还包括：第三信息；所述第三信息用于确定所述第一TTI长度子集的有效期。
  7. 根据权利要求1-6任一项所述的方法，其特征在于，所述N个信道可以为下述信道中的N个信道：
    物理下行共享信道PDSCH、物理上行共享信道PUSCH、物理上行控制信道PUCCH。
  8. 一种传输时间间隔TTI长度的通知方法，其特征在于，包括：
    用户设备接收基站通过物理层信令发送的第一信息，所述第一信息用于确定第一TTI长度集合中的第一TTI长度子集，所述第一TTI长度集合为至少一个TTI长度集合中的任一TTI长度集合；所述至少一个TTI长度集合由所述基站配置，每个TTI长度集合包含：M个不同的TTI长度子集，每个TTI长度子集包含：N个TTI长度，所述N个TTI长度与N个信道一一对应；所述M为大于或等于2的整数，所述N为大于或等于1的整数；
    所述用户设备按照所述第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息。
  9. 根据权利要求8所述的方法，其特征在于，所述第一信息为：指示所述第一TTI长度子集的指示信息；在所述用户设备接收基站通过物理层信令发送的第一信息之前，所述方法还包括：
    所述用户设备接收所述基站通过无线资源控制RRC配置信令发送的所述至少一个TTI长度集合。
  10. 根据权利要求8或9所述的方法，其特征在于，所述用户设备接收基站通过物理层信令发送的第一信息包括：
    所述用户设备接收所述基站通过物理下行控制信道PDCCH中的公共搜索空间发送的第一信息。
  11. 根据权利要求8或9所述的方法，其特征在于，所述用户设备接收基站通过物理层信令发送的第一信息包括：
    所述用户设备接收所述基站通过PDCCH中的用户设备UE专用 搜索空间发送的第一信息。
  12. 根据权利要求8或9所述的方法，其特征在于，所述用户设备接收基站通过物理层信令发送的第一信息包括：
    所述用户设备接收所述基站通过非PDCCH发送的第一信息。
  13. 根据权利要求8-12任一项所述的方法，其特征在于，所述物理层信令还包括：第三信息；所述第三信息用于确定所述第一TTI长度子集的有效期。
  14. 根据权利要求13所述的方法，其特征在于，所述方法还包括：
    若在所述第一TTI长度子集的有效期之后，所述用户设备未接收到所述基站通过物理层信令发送的第四信息，则所述用户设备仍按照所述第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息，或者按照默认的TTI长度收或发数据或控制信息；所述第四信息用于确定第二TTI长度集合中的第二TTI长度子集。
  15. 根据权利要求8-14任一项所述的方法，其特征在于，所述N个信道可以为下述信道中的N个信道：
    物理下行共享信道PDSCH、物理上行共享信道PUSCH、物理上行控制信道PUCCH。
  16. 一种基站，其特征在于，包括：
    配置单元，用于配置至少一个TTI长度集合；所述至少一个TTI长度集合中的每个TTI长度集合包含：M个不同的TTI长度子集，每个TTI长度子集包含：N个TTI长度，所述N个TTI长度与N个信道一一对应；所述M为大于或等于2的整数，所述N为大于或等于1的整数；
    发送单元，用于通过物理层信令向用户设备发送第一信息，所述第一信息用于确定所述配置单元配置的第一TTI长度集合中的第一TTI长度子集；所述第一TTI长度集合为所述至少一个TTI长度集合中的任一TTI长度集合；
    传输单元，用于按照所述第一TTI长度子集中的N个TTI长度 在N个信道上收或发数据或控制信息。
  17. 根据权利要求16所述的基站，其特征在于，所述第一信息为指示所述第一TTI长度子集的指示信息；所述发送单元，还用于：
    在所述配置单元配置至少一个TTI长度集合之后，所述发送单元通过物理层信令向用户设备发送第一信息之前，通过无线资源控制RRC配置信令向所述用户设备发送所述至少一个TTI长度集合。
  18. 根据权利要求16或17所述的基站，其特征在于，所述发送单元具体用于：
    通过物理下行控制信道PDCCH中的公共搜索空间向一组用户设备发送第二信息，所述第二信息包含：与所述用户设备相对应的第一信息。
  19. 根据权利要求1或17所述的基站，其特征在于，所述发送单元具体用于：
    通过PDCCH中的用户设备UE专用搜索空间向所述用户设备发送第一信息。
  20. 根据权利要求1或17所述的基站，其特征在于，所述发送单元具体用于：
    通过非PDCCH向用户设备发送第一信息。
  21. 根据权利要求1-5任一项所述的基站，其特征在于，
    所述物理层信令还包括：第三信息；所述第三信息用于确定所述第一TTI长度子集的有效期。
  22. 根据权利要求1-6任一项所述的基站，其特征在于，所述N个信道可以为下述信道中的N个信道：
    物理下行共享信道PDSCH、物理上行共享信道PUSCH、物理上行控制信道PUCCH。
  23. 一种用户设备，其特征在于，包括：
    接收单元，用于接收基站通过物理层信令发送的第一信息，所述第一信息用于确定第一TTI长度集合中的第一TTI长度子集，所述第一TTI长度集合为至少一个TTI长度集合中的任一TTI长度集合；所 述至少一个TTI长度集合由所述基站配置，每个TTI长度集合包含：M个不同的TTI长度子集，每个TTI长度子集包含：N个TTI长度，所述N个TTI长度与N个信道一一对应；所述M为大于或等于2的整数，所述N为大于或等于1的整数；
    传输单元，用于按照所述第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息。
  24. 根据权利要求23所述的用户设备，其特征在于，所述第一信息为：指示所述第一TTI长度子集的指示信息；所述接收单元，还用于：
    在所述接收单元接收基站通过物理层信令发送的第一信息之前，接收所述基站通过无线资源控制RRC配置信令发送的所述至少一个TTI长度集合。
  25. 根据权利要求23或24所述的用户设备，其特征在于，所述接收单元具体用于：
    接收所述基站通过物理下行控制信道PDCCH中的公共搜索空间发送的第一信息。
  26. 根据权利要求23或24所述的用户设备，其特征在于，所述接收单元具体用于：
    接收所述基站通过PDCCH中的用户设备UE专用搜索空间发送的第一信息。
  27. 根据权利要求23或24所述的用户设备，其特征在于，所述接收单元具体用于：
    接收所述基站通过非PDCCH发送的第一信息。
  28. 根据权利要求23-27任一项所述的用户设备，其特征在于，所述物理层信令还包括：第三信息；所述第三信息用于确定所述第一TTI长度子集的有效期。
  29. 根据权利要求28所述的用户设备，其特征在于，所述传输单元，还用于：
    若在所述第一TTI长度子集的有效期之后，所述接收单元未接收 到所述基站通过物理层信令发送的第四信息，则所述传输单元仍按照所述第一TTI长度子集中的N个TTI长度在N个信道上收或发数据或控制信息，或者按照默认的TTI长度收或发数据或控制信息；所述第四信息用于确定第二TTI长度集合中的第二TTI长度子集。
  30. 根据权利要求8-29任一项所述的用户设备，其特征在于，所述N个信道可以为下述信道中的N个信道：
    物理下行共享信道PDSCH、物理上行共享信道PUSCH、物理上行控制信道PUCCH。
  31. 一种基站，其特征在于，包括：
    处理器，用于配置至少一个TTI长度集合；所述至少一个TTI长度集合中的每个TTI长度集合包含：M个不同的TTI长度子集，每个TTI长度子集包含：N个TTI长度，所述N个TTI长度与N个信道一一对应；所述M为大于或等于2的整数，所述N为大于或等于1的整数；
    发送机，用于通过物理层信令向用户设备发送第一信息，所述第一信息用于确定所述处理器配置的第一TTI长度集合中的第一TTI长度子集；所述第一TTI长度集合为所述至少一个TTI长度集合中的任一TTI长度集合；
    所述发送机，还用于按照所述第一TTI长度子集中的N个TTI长度在N个信道上向所述用户设备发送数据或控制信息；
    接收机，用于按照所述第一TTI长度子集中的N个TTI长度在N个信道上接收所述用户设备发送的数据或控制信息。
  32. 根据权利要求31所述的基站，其特征在于，所述第一信息为指示所述第一TTI长度子集的指示信息；所述发送机，还用于：
    在所述处理器配置至少一个TTI长度集合之后，所述发送机通过物理层信令向用户设备发送第一信息之前，通过无线资源控制RRC配置信令向所述用户设备发送所述至少一个TTI长度集合。
  33. 根据权利要求31或32所述的基站，其特征在于，所述发送机具体用于：
    通过物理下行控制信道PDCCH中的公共搜索空间向一组用户设备发送第二信息，所述第二信息包含：与所述用户设备相对应的第一信息。
  34. 根据权利要求1或32所述的基站，其特征在于，所述发送机具体用于：
    通过PDCCH中的用户设备UE专用搜索空间向所述用户设备发送第一信息。
  35. 根据权利要求1或32所述的基站，其特征在于，所述发送机具体用于：
    通过非PDCCH向用户设备发送第一信息。
  36. 根据权利要求1-5任一项所述的基站，其特征在于，
    所述物理层信令还包括：第三信息；所述第三信息用于确定所述第一TTI长度子集的有效期。
  37. 根据权利要求1-6任一项所述的基站，其特征在于，所述N个信道可以为下述信道中的N个信道：
    物理下行共享信道PDSCH、物理上行共享信道PUSCH、物理上行控制信道PUCCH。
  38. 一种用户设备，其特征在于，包括：
    接收机，用于接收基站通过物理层信令发送的第一信息，所述第一信息用于确定第一TTI长度集合中的第一TTI长度子集，所述第一TTI长度集合为至少一个TTI长度集合中的任一TTI长度集合；所述至少一个TTI长度集合由所述基站配置，每个TTI长度集合包含：M个不同的TTI长度子集，每个TTI长度子集包含：N个TTI长度，所述N个TTI长度与N个信道一一对应；所述M为大于或等于2的整数，所述N为大于或等于1的整数；
    所述接收机，还用于按照所述第一TTI长度子集中的N个TTI长度在N个信道上接收所述基站发送的数据或控制信息；
    发送机，用于按照所述第一TTI长度子集中的N个TTI长度在N个信道上向所述基站发送数据或控制信息。
  39. 根据权利要求38所述的用户设备，其特征在于，所述第一信息为：指示所述第一TTI长度子集的指示信息；所述接收机，还用于：
    在所述接收机接收基站通过物理层信令发送的第一信息之前，接收所述基站通过无线资源控制RRC配置信令发送的所述至少一个TTI长度集合。
  40. 根据权利要求38或39所述的用户设备，其特征在于，所述接收机具体用于：
    接收所述基站通过物理下行控制信道PDCCH中的公共搜索空间发送的第一信息。
  41. 根据权利要求38或39所述的用户设备，其特征在于，所述接收机具体用于：
    接收所述基站通过PDCCH中的用户设备UE专用搜索空间发送的第一信息。
  42. 根据权利要求38或39所述的用户设备，其特征在于，所述接收机具体用于：
    接收所述基站通过非PDCCH发送的第一信息。
  43. 根据权利要求38-42任一项所述的用户设备，其特征在于，所述物理层信令还包括：第三信息；所述第三信息用于确定所述第一TTI长度子集的有效期。
  44. 根据权利要求43所述的用户设备，其特征在于，所述处理器，还用于：
    若在所述第一TTI长度子集的有效期之后，所述接收机未接收到所述基站通过物理层信令发送的第四信息，则所述接收机仍按照所述第一TTI长度子集中的N个TTI长度在N个信道上接收所述基站发送的数据或控制信息，或者按照默认的TTI长度接收所述基站发送的数据或控制信息；所述第四信息用于确定第二TTI长度集合中的第二TTI长度子集。
  45. 根据权利要求38-44任一项所述的用户设备，其特征在于， 所述N个信道可以为下述信道中的N个信道：
    物理下行共享信道PDSCH、物理上行共享信道PUSCH、物理上行控制信道PUCCH。
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