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WO2017024446A1 - 一种数据传输方法、设备及系统 - Google Patents

一种数据传输方法、设备及系统 Download PDF

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Publication number
WO2017024446A1
WO2017024446A1 PCT/CN2015/086381 CN2015086381W WO2017024446A1 WO 2017024446 A1 WO2017024446 A1 WO 2017024446A1 CN 2015086381 W CN2015086381 W CN 2015086381W WO 2017024446 A1 WO2017024446 A1 WO 2017024446A1
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WO
WIPO (PCT)
Prior art keywords
window
base station
window identifier
user equipment
dci
Prior art date
Application number
PCT/CN2015/086381
Other languages
English (en)
French (fr)
Inventor
徐凯
李晓翠
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 CN201580073707.8A priority Critical patent/CN107113277B/zh
Priority to PCT/CN2015/086381 priority patent/WO2017024446A1/zh
Priority to EP15900645.1A priority patent/EP3310014A4/en
Publication of WO2017024446A1 publication Critical patent/WO2017024446A1/zh

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    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • 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
    • H04L5/0094—Indication of how sub-channels of the path are allocated

Definitions

  • the present invention relates to the field of communications, and in particular, to a data transmission method, device, and system.
  • the spectrum used by wireless communication systems is divided into two categories, licensed spectrum (English: licensed spectrum) and unlicensed spectrum (English: unlicensed spectrum).
  • licensed spectrum International spectrum
  • unlicensed spectrum For commercial mobile communication systems, operators need to auction licensed spectrum. After obtaining authorization, they can use the corresponding spectrum to carry out mobile communication operations.
  • Unlicensed spectrum does not require auctions, and anyone can legally use these bands, such as WiFi in the 2.4GHz and 5GHz bands (English name: Wireless-Fidelity, Chinese: Wireless Fidelity) devices.
  • a carrier on a licensed spectrum is called an authorized carrier
  • a carrier on an unlicensed spectrum is called an unlicensed carrier.
  • LAA-LTE Long Term Evolution
  • CSMA Carrier Sense Multiple Access
  • the LBT is used to contend for the access channel, but the starting time point of the channel occupancy in this mode is random, so the starting time point of the LAA-LTE carrier occurrence signal is also random, then the LAA-LTE subframe occupies the channel.
  • the start time and the sub-frame boundary of the sub-frame occupied channel on the licensed spectrum are not aligned. Therefore, it is a great possibility that after the base station occupies the channel, an incomplete subframe is transmitted first, and the time of the incomplete subframe continues until the end of the corresponding subframe on the licensed spectrum, and then the complete sub-transmission is started. frame. In other words, the first subframe is incomplete and the next subframe is complete.
  • the remaining sub-frames and the sub-frames on the licensed spectrum are aligned in time, but the last sub-frame may also be incomplete. If the first subframe is an incomplete subframe, because it is not aligned with the subframe boundary of the licensed spectrum, the UE (English name: User Equipment, English abbreviation: UE) cannot know the incomplete subframe.
  • the starting position in the current 3rd Generation Partnership Project (English: 3rd Generation Partnership Project, 3GPP), one of the possible solutions is to detect the preamble signal on the unlicensed spectrum. The starting position of the English (preamble), thereby obtaining the starting transmission position of the data on the unlicensed spectrum.
  • the preamble generally sends the data before the base station preempts the channel, and can be used for time-frequency synchronization. If the initial transmission time of the data is obtained in the LAA-LTE system, the receiving end needs to continue to be blind. Detection, so that the receiving end consumes a large amount of power.
  • the embodiments of the present invention provide a data transmission method, device, and system, which can reduce the blind detection range of the receiving end, thereby reducing the power consumption of the UE.
  • a data transmission method including:
  • the base station configures one subframe of the unlicensed carrier as n windows, where n is a positive integer
  • the base station acquires a window identifier of a window to which the OFDM symbol corresponding to the start position of the transmission data belongs, where the window corresponding to the window identifier includes m orthogonal frequency division multiplexing OFDM symbols, where m is a positive integer;
  • the base station sends the window identifier to the user equipment by using an authorized carrier.
  • the data comprises a preamble.
  • the sending, by the base station, the window identifier to the user equipment by using the authorized carrier includes:
  • the base station adds a bit for indicating the window identifier to the downlink control information DCI of the authorized carrier, and sends the DCI to the user equipment.
  • the sending, by the base station, the window identifier to the user equipment by using the authorized carrier includes:
  • the base station multiplexes existing bits in the downlink control information DCI (Downlink Control Information) of the authorized carrier to indicate the window identifier, and sends the DCI to the user equipment.
  • DCI Downlink Control Information
  • the second aspect provides a data transmission method, including:
  • the user equipment receives the window identifier sent by the base station by using the authorized carrier, where the window corresponding to the window identifier includes m orthogonal frequency division multiplexing OFDM symbols, where m is a positive integer;
  • the data includes a preamble.
  • the user equipment receiving the window identifier sent by the base station by using the authorized carrier includes:
  • the user equipment receives the downlink control information DCI sent by the base station, and adds a bit in the DCI to indicate the window identifier.
  • the receiving, by the user equipment, the window identifier sent by the base station by using the authorized carrier includes:
  • the user equipment receives the downlink control information DCI sent by the base station, and multiplexes existing bits in the DCI, and is used to indicate the window identifier.
  • a base station is provided.
  • a configuration unit configured to configure one subframe of the unlicensed carrier as n windows, where n is a positive integer
  • An acquiring unit where the window identifier of the window to which the OFDM symbol corresponding to the start position of the data is located is obtained, where the window corresponding to the window identifier includes m orthogonal frequency division multiplexing OFDM symbols, where m is a positive integer;
  • a sending unit configured to pass the window identifier acquired by the acquiring unit by authorization
  • the carrier is sent to the user equipment.
  • the data includes a preamble.
  • the sending unit is specifically configured to add a bit for indicating the window identifier in a downlink control information DCI of the authorized carrier, and send the DCI To the user equipment.
  • the sending unit is specifically configured to: multiplex existing bits in the downlink control information DCI of the authorized carrier to indicate the window identifier, and the DCI Sent to the user device.
  • the fourth aspect provides a user equipment, including:
  • a receiving unit configured to receive a window identifier sent by the base station by using an authorized carrier, where the window corresponding to the window identifier includes m orthogonal frequency division multiplexing OFDM symbols, where m is a positive integer;
  • An acquiring unit configured to acquire, according to the window identifier received by the receiving unit, a starting location of received data corresponding to an orthogonal frequency division multiplexing OFDM symbol in the window, where the window is an unlicensed carrier of the base station
  • One of the subframes is configured as one of the n windows, where n is a positive integer.
  • the data includes a preamble.
  • the receiving unit is configured to receive downlink control information (DCI) sent by the base station, and add a bit in the DCI to indicate the window identifier. .
  • DCI downlink control information
  • the receiving unit is configured to receive downlink control information DCI sent by the base station, and multiplex existing bits in the DCI, to indicate the Window identifier.
  • a fifth aspect provides a base station, including: a processor, an interface circuit, a memory, and a bus; wherein the processor, the interface circuit, and the memory are connected through the bus and complete communication with each other;
  • the processor is configured to configure one subframe of the unlicensed carrier into n windows, Where n is a positive integer; the window identifier of the window to which the OFDM symbol corresponding to the start position of the transmitted data belongs is obtained, wherein the window corresponding to the window identifier includes m orthogonal frequency division multiplexing OFDM symbols, where m is positive Integer
  • the interface circuit is configured to send the window identifier acquired by the processor to the user equipment by using an authorized carrier.
  • the data includes a preamble.
  • the interface circuit is specifically configured to add a bit for indicating the identifier of the window in a downlink control information DCI of the authorized carrier, and send the DCI To the user equipment.
  • the interface circuit is specifically configured to: multiplex existing bits in the downlink control information DCI of the authorized carrier to indicate the window identifier, and the DCI Sent to the user device.
  • a sixth aspect provides a user equipment, including: a processor, an interface circuit, a memory, and a bus; the processor, the interface circuit, and the memory are connected through the bus and complete communication with each other;
  • the interface circuit is configured to receive a window identifier that is sent by the base station by using an authorized carrier, where the window corresponding to the window identifier includes m orthogonal frequency division multiplexing OFDM symbols, where m is a positive integer;
  • the processor is configured to acquire, according to the window identifier received by the interface circuit, a starting location of received data corresponding to an orthogonal frequency division multiplexing OFDM symbol in the window, where the window is the base station
  • One subframe of the unlicensed carrier is configured as one of the n windows, where n is a positive integer.
  • the data includes a preamble.
  • the interface circuit is specifically configured to receive downlink control information (DCI) sent by the base station, and add a bit in the DCI to indicate the window identifier. .
  • DCI downlink control information
  • the interface circuit Specifically, it is used to receive the downlink control information DCI sent by the base station, and multiplex the existing bits in the DCI to indicate the window identifier.
  • the seventh aspect provides a communication system, which is applied to data transmission on an unlicensed spectrum, and the base station according to any one of the third aspect or the third aspect, Or the user equipment according to any one of the possible implementation manners of the fourth aspect;
  • any one of the fifth aspect or the fifth aspect wherein the any one of the sixth aspect or the sixth aspect, any one of the possible implementations User equipment as described.
  • the base station can configure one subframe of the unlicensed carrier as n windows, where n is a positive integer; and acquire an OFDM symbol corresponding to the start position of the transmitted data
  • the window identifier of the window to which it belongs then the window identifier is sent to the user equipment through the authorized carrier; after receiving the window identifier sent by the base station through the authorized carrier, the user equipment acquires the reception corresponding to the orthogonal frequency division multiplexing OFDM symbol in the window according to the window identifier.
  • the starting position of the data so that the blind detection range of the receiving end can be reduced, thereby reducing the power consumption of the UE.
  • FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of window division of bearer data according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of another window division of carrying data according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart diagram of a data transmission method according to another embodiment of the present invention.
  • FIG. 6 is a schematic flowchart diagram of a data transmission method according to still another embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a base station according to another embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a user equipment according to another embodiment of the present invention.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • the user equipment (English name: User Equipment, English abbreviation: UE) provided by the embodiment of the present invention may be a cellular phone, a cordless phone, a session initiation protocol (English name: Session Initiation Protocol, SIP: phone), a wireless local ring. Road (English full name: Wireless Local Loop, English abbreviation: WLL) Station, personal digital processing (English full name: Personal Digital Assistant, English abbreviation: PDA), handheld devices with wireless communication capabilities, in-vehicle devices, wearable devices, computing devices or other devices connected to wireless modems.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • a base station provided by an embodiment of the present invention may refer to a device in an access network that communicates with user equipment over one or more sectors on an air interface.
  • the base station can be used to convert the received air frame and the Internet Protocol (English full name: Internet Protocol, English abbreviation: IP) into a router between the user equipment and the rest of the access network, wherein the rest of the access network Some can include an IP network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a base station in a global mobile communication system (Global System for Mobile communication, English abbreviation: GSM) or code division multiple access (English full name: Code Division Multiple Access, English abbreviation: CDMA) (English full name: Base Transceiver) Station, English abbreviation: BTS), can also be the base station in the Wideband Code Division Multiple Access (English name: Wideband Code Division Multiple Access, English abbreviation: WCDMA) (English name: Base Station, English abbreviation: BS), or Evolved base station (English full name: evolutional Node B, English abbreviation: NodeB or eNB or e-NodeB) in long-term evolution (English full name: Long Term Evolution, English abbreviation LTE), and macro base station in cellular wireless communication system
  • GSM Global System for Mobile communication
  • CDMA Code Division Multiple Access
  • BTS Base Transceiver Station
  • WCDMA Wideband Code Division Multiple Access
  • BS Base Station
  • Evolved base station English
  • the embodiment of the present invention is used in the communication system shown in FIG. 1, including the base station D1 and the user equipment D2, and the base station D1 and the user equipment D2 need to perform data transmission in the unlicensed spectrum.
  • an embodiment of the present invention provides a data transmission method. Referring to FIG. 2, the method includes the following steps:
  • the base station configures one subframe of the unlicensed carrier as n windows.
  • n is a positive integer.
  • the base station acquires a window identifier of a window to which the OFDM symbol corresponding to the start position of the transmitted data belongs.
  • the window corresponding to the window identifier includes m orthogonal frequency division multiplexing OFDM symbols, where m is a positive integer.
  • the subframe includes n windows, where n is a positive integer; wherein it is required to indicate a regular cyclic prefix in each subframe.
  • each window may also contain a different number of OFDM symbols, in which case m ⁇ 12.
  • a conventional CP is similar and will not be described again.
  • the starting position of the data sent in step 102 is the time when the base station preempts the unlicensed carrier.
  • the base station sends the window identifier to the user equipment by using an authorized carrier.
  • the user equipment receives a window identifier sent by the base station by using an authorized carrier.
  • the window corresponding to the window identifier includes m orthogonal frequency division multiplexing OFDM symbols, where m is a positive integer.
  • the user equipment acquires, according to the window identifier, a starting location of the received data corresponding to the orthogonal frequency division multiplexing OFDM symbol in the window.
  • the window is one of n windows configured by the base station to configure one subframe of the unlicensed carrier, where n is a positive integer.
  • the data includes a preamble
  • the preamble is used to indicate a starting location of the data sent on the unlicensed carrier
  • the preamble signal is generally sent before the packet data is sent.
  • the manner of obtaining the starting position of the received data in the window can be obtained by using the blind detection method in the prior art, and details are not described herein again.
  • the base station can configure one subframe of the unlicensed carrier as n windows, where n is a positive integer; and acquire a window to which the OFDM symbol corresponding to the start position of the transmitted data belongs
  • the window identifier is sent to the user equipment by using the authorized carrier.
  • the user equipment After receiving the window identifier sent by the base station through the authorized carrier, the user equipment acquires the start of the received data corresponding to the orthogonal frequency division multiplexing OFDM symbol in the window according to the window identifier. Position, thereby reducing the blind detection range at the receiving end, thereby reducing UE power consumption.
  • Another embodiment of the present invention provides a data transmission method, which is applied to data transmission on an unlicensed spectrum.
  • the method includes the following steps:
  • the base station configures one subframe of the unlicensed carrier as n windows.
  • n is a positive integer.
  • the base station acquires a window identifier of a window to which the OFDM symbol corresponding to the start position of the transmitted data belongs.
  • the window corresponding to the window identifier includes m orthogonal frequency division multiplexing OFDM symbols, where m is a positive integer.
  • the base station adds a bit for indicating the window identifier to the downlink control information DCI of the authorized carrier, and sends the DCI to the user equipment.
  • the values of 01, 10, and 11 are divided into four windows. 00 is used to indicate the window with the window identifier 1 and 01 is used to indicate the window with the window identifier 2, and 10 is used to indicate that the window identifier is 3. Window, 11 is used to indicate the window whose window is identified as 4. Therefore, if the preamble is in the window whose window is identified as 2, then 01 is sent to the UE, and the UE detects the window by using the indication information to the window identifier 2, thereby narrowing the range of blind detection.
  • the user equipment receives the downlink control information DCI sent by the base station, and adds a bit in the DCI to indicate the window identifier.
  • the user equipment acquires, according to the window identifier, a starting position of the received data corresponding to the orthogonal frequency division multiplexing OFDM symbol in the window.
  • the window is one of n windows configured by the base station to configure one subframe of the unlicensed carrier, where n is a positive integer.
  • the base station can configure one subframe of the unlicensed carrier as n windows, where n is a positive integer; and acquire a window to which the OFDM symbol corresponding to the start position of the transmitted data belongs
  • the window identifier is sent to the user equipment by using the authorized carrier; the user equipment receives the window identifier sent by the base station through the authorized carrier, and obtains the orthogonal frequency division multiplexing OFDM in the window according to the window identifier.
  • the symbol corresponds to the starting position of the received data, so that the blind detection range of the receiving end can be reduced, thereby reducing the power consumption of the UE.
  • Another embodiment of the present invention provides a data transmission method, which is applied to data transmission on an unlicensed spectrum.
  • the method includes the following steps:
  • the base station configures one subframe of the unlicensed carrier as n windows.
  • n is a positive integer.
  • the base station acquires a window identifier of a window to which the OFDM symbol corresponding to the start position of the transmitted data belongs.
  • the window corresponding to the window identifier includes m orthogonal frequency division multiplexing OFDM symbols, where m is a positive integer.
  • the base station multiplexes existing bits in the downlink control information DCI of the authorized carrier to indicate the window identifier, and sends the DCI to the user equipment.
  • the existing signaling in the DCI can be multiplexed, for example, using 1 bit in the RV (English full name: Redundancy Version, Chinese version: Redundancy Version) version field in the DCI to indicate the window.
  • RV American full name: Redundancy Version
  • Cisco Chinese version: Redundancy Version
  • Identification of course, the shortcoming of this program is that it may bring certain scheduling restrictions.
  • the specific manner can refer to the way of adding a bit in the DCI, and the description will not be repeated here, and the scheme can be reduced. Scheduling restrictions, reducing signaling overhead, and the same can reduce the scope of blind detection.
  • the user equipment receives the downlink control information DCI sent by the base station, and multiplexes the existing bits in the DCI to indicate the window identifier.
  • the user equipment acquires, according to the window identifier, a starting position of the received data corresponding to the orthogonal frequency division multiplexing OFDM symbol in the window.
  • the window is one of n windows configured by the base station to configure one subframe of the unlicensed carrier, where n is a positive integer.
  • the base station can configure one subframe of the unlicensed carrier as n windows, where n is a positive integer; and acquire a window to which the OFDM symbol corresponding to the start position of the transmitted data belongs Window identifier; then the window identifier is sent to the user equipment through the authorized carrier; the user equipment receives the base station through the authorization After the window identifier is sent by the wave, the starting position of the received data corresponding to the orthogonal frequency division multiplexing OFDM symbol in the window is obtained according to the window identifier, so that the blind detection range of the receiving end can be reduced, thereby reducing the power consumption of the UE.
  • a base station including:
  • the configuration unit 71 is configured to configure one subframe of the unlicensed carrier as n windows, where n is a positive integer;
  • the obtaining unit 72 is configured to obtain a window identifier of a window to which the OFDM symbol corresponding to the start position of the transmission data belongs, where the window identifier includes m orthogonal frequency division multiplexing OFDM symbols, where m is a positive integer;
  • the sending unit 73 is configured to send the window identifier acquired by the acquiring unit 72 to the user equipment by using an authorized carrier.
  • the data includes a preamble.
  • the sending unit 73 is specifically configured to add a bit for indicating the window identifier to the downlink control information DCI of the authorized carrier, and send the DCI to the user equipment.
  • the sending unit 73 is specifically configured to: multiplex existing bits in the downlink control information DCI of the authorized carrier to indicate the window identifier, and send the DCI to the user equipment.
  • the sending unit 73 in this embodiment may be an interface circuit, such as a transmitter, having a transmitting function on the base station.
  • the configuration unit 71 and the obtaining unit 72 may be separately set up processors, or may be integrated in one processor of the base station, or may be stored in the memory of the base station in the form of program code, and processed by one of the base stations.
  • the function of the above configuration unit 71 and the acquisition unit 72 is called and executed.
  • the processor described herein may be a central processing unit (English name: Central Processing Unit, English abbreviation: CPU), or a specific integrated circuit (English name: Application Specific Integrated Circuit, English abbreviation: ASIC), or configured One or more integrated circuits implementing embodiments of the present invention.
  • the base station provided by the embodiment of the present invention can configure one subframe of the unlicensed carrier as n windows, where n is a positive integer; and acquires a starting position pair with the transmitted data.
  • the starting position of the received data corresponding to the OFDM symbol thereby reducing the blind detection range of the receiving end, thereby reducing the power consumption of the UE.
  • a user equipment is provided,
  • the receiving unit 81 is configured to receive a window identifier that is sent by the base station by using the authorized carrier, where the window identifier includes m orthogonal frequency division multiplexing OFDM symbols, where m is a positive integer;
  • the obtaining unit 82 is configured to acquire, according to the window identifier received by the receiving unit 81, a starting location of the received data corresponding to the orthogonal frequency division multiplexing OFDM symbol in the window, where the window is One subframe of the authorized carrier is configured as one of n windows, where n is a positive integer.
  • the data includes a preamble signal.
  • the receiving unit 81 is configured to receive downlink control information (DCI) sent by the base station, and add a bit in the DCI to indicate the window identifier.
  • DCI downlink control information
  • the receiving unit 81 is configured to receive the downlink control information DCI sent by the base station, and multiplex the existing bits in the DCI to indicate the window identifier.
  • the receiving unit 81 in this embodiment may be an interface circuit with a receiving function in the user equipment, such as a receiver.
  • the obtaining unit 82 may be a separately set processor, or may be implemented in one processor of the user equipment, or may be stored in the memory of the user equipment in the form of program code, by a processor of the user equipment. The function of the above obtaining unit 82 is called and executed.
  • the processor described herein may be a central processing unit (English name: Central Processing Unit, English abbreviation: CPU), or a specific integrated circuit (English name: Application Specific Integrated Circuit, English abbreviation: ASIC), or configured One or more integrated circuits implementing embodiments of the present invention.
  • the user equipment provided by the embodiment of the present invention, at the base station, one of the unlicensed carriers
  • the subframe is configured as n windows, where n is a positive integer; and the window identifier of the window to which the OFDM symbol corresponding to the start position of the transmitted data belongs is obtained; after the window identifier is sent to the user equipment through the authorized carrier; the user equipment receives After the base station identifies the window sent by the authorized carrier, the start position of the received data corresponding to the orthogonal frequency division multiplexing OFDM symbol in the window is obtained according to the window identifier, so that the blind detection range of the receiving end can be reduced, thereby reducing the power consumption of the UE.
  • a base station including: a processor 901, an interface circuit 902, a memory 903, and a bus 904.
  • the processor 901, the interface circuit 902, and the memory 903 are connected by a bus 904 and complete communication with each other.
  • the processor 901 herein may be a processor or a collective name of multiple processing elements.
  • the processor may be a central processing unit CPU, or a specific integrated circuit ASIC, or one or more integrated circuits configured to implement embodiments of the present invention, such as one or more microprocessors (English full name) : digital singnal processor, English abbreviation: DSP), or one or more field programmable gate arrays (English full name: Field Programmable Gate Array, English abbreviation: FPGA).
  • the memory 903 may be a storage device or a collective name of a plurality of storage elements, and is used to store executable program code or parameters, data, and the like required for the operation of the access network management device.
  • the memory 903 may include a random access memory (English name: Random-Access Memory, English abbreviation: RAM), and may also include non-volatile memory (English name: non-volatile memory, English abbreviation: NVRAM), such as disk storage, flash memory. (Flash) and so on.
  • the bus 904 can be an industry standard architecture (English name: Industry Standard Architecture, English abbreviation: ISA) bus, external device interconnection (English full name: Peripheral Component, English abbreviation: PCI) bus or extended industry standard architecture (English full name: Extended Industry Standard Architecture, English abbreviation: EISA) bus.
  • the bus 904 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 9, but it does not mean that there is only one bus or one type of bus.
  • the processor 901 is configured to configure one subframe of the unlicensed carrier as n windows, where n is a positive integer, and obtain a window identifier of a window to which the OFDM symbol corresponding to the start position of the transmitted data belongs,
  • the window corresponding to the window identifier includes m orthogonal frequency division multiplexing OFDM symbols, where m is a positive integer;
  • the interface circuit 902 is configured to send the window identifier acquired by the processor 901 to the user equipment by using an authorized carrier.
  • the base station provided by the embodiment of the present invention can configure one subframe of the unlicensed carrier as n windows, where n is a positive integer; and acquire a window identifier of a window to which the OFDM symbol corresponding to the start position of the transmitted data belongs; And then sending the window identifier to the user equipment by using the authorized carrier; after receiving the window identifier sent by the base station by using the authorized carrier, the user equipment acquires a starting position of the received data corresponding to the orthogonal frequency division multiplexing OFDM symbol in the window according to the window identifier, thereby The blind detection range of the receiving end can be reduced, thereby reducing the power consumption of the UE.
  • the data includes a preamble signal.
  • the interface circuit 902 is specifically configured to add a bit for indicating the window identifier to the downlink control information DCI of the authorized carrier, and send the DCI to the user equipment.
  • the interface circuit 902 is specifically configured to: multiplex existing bits in the downlink control information DCI of the authorized carrier to indicate the window identifier, and send the DCI to the user equipment.
  • a user equipment for data transmission on an unlicensed spectrum, including: a processor 1001, an interface circuit 1002, a memory 1003, and a bus 1004.
  • the processor 1001, the interface circuit 1002, and the memory 1003 pass through a bus. 1004 connects and completes communication with each other;
  • the interface circuit 1002 is configured to receive a window identifier that is sent by the base station by using an authorized carrier, where the window identifier includes m orthogonal frequency division multiplexing OFDM symbols, where m is a positive integer;
  • the processor 1001 is configured to acquire, according to the window identifier received by the interface circuit 1002, the received data corresponding to the orthogonal frequency division multiplexing OFDM symbol in the window. a start position, the window being one of n windows configured by the base station to configure one subframe of an unlicensed carrier, where n is a positive integer.
  • the user equipment configureds, in the base station, one subframe of the unlicensed carrier as n windows, where n is a positive integer; and acquires a window to which the OFDM symbol corresponding to the start position of the transmitted data belongs. a window identifier; after the window identifier is sent to the user equipment by using the authorized carrier; the user equipment receives the window identifier sent by the base station through the authorized carrier, and obtains a starting position of the received data corresponding to the orthogonal frequency division multiplexing OFDM symbol in the window according to the window identifier Therefore, the blind detection range of the receiving end can be reduced, thereby reducing the power consumption of the UE.
  • the data includes a preamble signal.
  • the interface circuit 1102 is configured to receive downlink control information (DCI) sent by the base station, and add a bit in the DCI to indicate the window identifier.
  • DCI downlink control information
  • the interface circuit 1102 is configured to receive the downlink control information DCI sent by the base station, and multiplex the existing bits in the DCI to indicate the window identifier.
  • a computer readable medium comprising computer readable instructions that, when executed, perform the operations of 101 to 105, 201 to 205, 301 to 305 of the method in the above embodiments. .
  • a computer program product including the computer readable medium described above.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • 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 exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part 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 (English abbreviation: ROM, English full name: Read-Only Memory), a random access memory (English abbreviation: RAM, English full name: Random Access Memory), magnetic A variety of media that can store program code, such as a disc or a disc.

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Abstract

本发明的实施例提供一种数据传输方法、设备及系统，涉及通信领域，能够减小接收端的盲检测范围，从而降低UE功耗。该方法包括：基站将非授权载波的一个子帧配置为n个窗口，其中n为正整数；所述基站获取与发送数据的起始位置对应的OFDM符号所属的窗口的窗口标识，其中，所述窗口标识对应的窗口中包括m个正交频分复用OFDM符号，m为正整数；所述基站将所述窗口标识通过授权载波发送至用户设备。用于数据传输。

Description

一种数据传输方法、设备及系统 技术领域
本发明涉及通信领域，尤其涉及一种数据传输方法、设备及系统。
背景技术
无线通信系统使用的频谱分为两类，授权频谱(英文：licensed spectrum)和非授权频谱(英文：unlicensed spectrum)。对于商用的移动通信系统，运营商需要拍卖授权频谱，获得授权后，可以使用相应的频谱开展移动通信的运营活动。非授权频谱不需要拍卖，任何人都可以合法的使用这些频段，比如在2.4GHz和5GHz频带上的WiFi(英文全称：Wireless-Fidelity，中文：无线保真)设备。通常，授权频谱上的载波称为授权载波，非授权频谱上的载波称为非授权载波。随着无线通信技术的发展，无线通信网络中传输的信息量日益增加，抢占非授权频谱传输信息，可以提高无线通信网络中的数据吞吐量，更好地满足用户的需求。在长期演进的非授权频谱(英文全称：Licensed-Assisted Access Using Long Term Evolution，英文缩写：LAA-LTE)系统中，LAA-LTE的节点通过说前先听原则(英文全称：listen before talk，英文缩写：LBT)使用信道资源，其中，LBT是一种载波监听多路访问(英文全称：Carrier Sense Multiple Access，英文缩写：CSMA)技术。
在LAA系统中，采用LBT方式竞争接入信道，但该方式中信道占用的开始时间点是随机的，因此LAA-LTE载波出现信号的开始时间点也是随机的，那么LAA-LTE子帧占用信道的开始时间和授权频谱上子帧占用信道的子帧边界就会不对齐。所以，很大的可能性是基站占用信道后，先发送的是一个不完整的子帧，这个不完整的子帧的时间一直持续到授权频谱上对应子帧的结束，然后开始发送完整的子帧。也就是说，第一个子帧不完整，接下来的子帧是完整的， 并且剩下的子帧和授权频谱上的子帧在时间上是对齐的，但是最后一个子帧也可能是不完整的。而如果第一个子帧是一个不完整的子帧，因为其与授权频谱的子帧边界不对齐，所以UE(英文全称：User Equipment，英文缩写：UE)就不能够获知该不完整子帧的起始位置，在现在在现在第三代合作伙伴计划(英文：3rd Generation Partnership Project，简称：3GPP)中有关LAA的方案中，其中一种可能的解决方案是通过检测非授权频谱上前导信号(英文：preamble)的起始位置，从而获得非授权频谱上数据的起始发送位置。其中，preamble一般都在基站抢占到信道后，数据发送之前进行发送，其可以用于进行时频同步等，如果在LAA-LTE系统中获得数据的起始发送时刻，那么需要接收端持续进行盲检测，从而使得接收端功耗较大。
发明内容
本发明的实施例提供一种数据传输方法、设备及系统，能够减小接收端的盲检测范围，从而降低UE功耗。
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，提供一种数据传输方法，包括：
基站将非授权载波的一个子帧配置为n个窗口，其中n为正整数；
所述基站获取与发送数据的起始位置对应的OFDM符号所属的窗口的窗口标识，其中，所述窗口标识对应的窗口中包括m个正交频分复用OFDM符号，m为正整数；
所述基站将所述窗口标识通过授权载波发送至用户设备。
结合第一方面，在第一种可能的实现方式中，所述数据包括前导信号。
结合第一方面，在第二种可能的实现方式中，所述基站将所述窗口标识通过授权载波发送至用户设备包括：
所述基站在所述授权载波的下行控制信息DCI中增加用于指示所述窗口标识的比特，并将所述DCI发送至所述用户设备。
结合第一方面，在第三种可能的实现方式中，所述基站将所述窗口标识通过授权载波发送至用户设备包括：
所述基站复用所述授权载波的下行控制信息DCI(英文全称：Downlink Control Information)中的已有比特来指示所述窗口标识，并将所述DCI发送至所述用户设备。
第二方面提供一种数据传输方法，包括：
用户设备接收基站通过授权载波发送的窗口标识，其中，所述窗口标识对应的窗口中包括m个正交频分复用OFDM符号，m为正整数；
所述用户设备根据所述窗口标识获取与所述窗口中正交频分复用OFDM符号对应的接收数据的起始位置，所述窗口为所述基站将非授权载波的一个子帧配置为的n个窗口中的一个，其中n为正整数。
结合第二方面，在第一种可能的实现方式中，所述数据包括前导信号。
结合第二方面，在第二种可能的实现方式中，所述用户设备接收基站通过授权载波发送的窗口标识包括：
所述用户设备接收所述基站发送的下行控制信息DCI，在所述DCI中新增比特，用于指示所述窗口标识。
结合第二方面，在第三种可能的实现方式中，所述用户设备接收基站通过授权载波发送的窗口标识包括：
所述用户设备接收所述基站发送的下行控制信息DCI，复用所述DCI中的已有比特，用于指示所述窗口标识。
第三方面，提供一种基站，
配置单元，用于将非授权载波的一个子帧配置为n个窗口，其中n为正整数；
获取单元，获取与发送数据的起始位置对应的OFDM符号所属的窗口的窗口标识，其中，所述窗口标识对应的窗口中包括m个正交频分复用OFDM符号，m为正整数；
发送单元，用于将所述获取单元获取的所述窗口标识通过授权 载波发送至用户设备。
结合第三方面，在第一种可能的实现方式中，所述数据包括前导信号。
结合第三方面，在第二种可能的实现方式中，所述发送单元具体用于在所述授权载波的下行控制信息DCI中增加用于指示所述窗口标识的比特，并将所述DCI发送至所述用户设备。
结合第三方面，在第三种可能的实现方式中，所述发送单元具体用于复用所述授权载波的下行控制信息DCI中的已有比特来指示所述窗口标识，并将所述DCI发送至所述用户设备。
第四方面提供一种用户设备，包括：
接收单元，用于接收基站通过授权载波发送的窗口标识，其中，所述窗口标识对应的窗口中包括m个正交频分复用OFDM符号，m为正整数；
获取单元，用于根据所述接收单元接收的所述窗口标识获取与所述窗口中正交频分复用OFDM符号对应的接收数据的起始位置，所述窗口为所述基站将非授权载波的一个子帧配置为的n个窗口中的一个，其中n为正整数。
结合第四方面，在第一种可能的实现方式中，所述数据包括前导信号。
结合第四方面，在第二种可能的实现方式中，所述接收单元，具体用于接收所述基站发送的下行控制信息DCI，在所述DCI中新增比特，用于指示所述窗口标识。
结合第四方面，在第三种可能的实现方式中，所述接收单元，具体用于接收所述基站发送的下行控制信息DCI，复用所述DCI中的已有比特，用于指示所述窗口标识。
第五方面，提供一种基站，包括：处理器、接口电路、存储器和总线；所述处理器、接口电路、存储器通过所述总线连接并完成相互间的通信；
所述处理器，用于将非授权载波的一个子帧配置为n个窗口， 其中n为正整数；获取与发送数据的起始位置对应的OFDM符号所属的窗口的窗口标识，其中，所述窗口标识对应的窗口中包括m个正交频分复用OFDM符号，m为正整数；
所述接口电路，用于将所述处理器获取的所述窗口标识通过授权载波发送至用户设备。
结合第五方面，在第一种可能的实现方式中，所述数据包括前导信号。
结合第五方面，在第二种可能的实现方式中，所述接口电路具体用于在所述授权载波的下行控制信息DCI中增加用于指示所述窗口标识的比特，并将所述DCI发送至所述用户设备。
结合第五方面，在第三种可能的实现方式中，所述接口电路具体用于复用所述授权载波的下行控制信息DCI中的已有比特来指示所述窗口标识，并将所述DCI发送至所述用户设备。
第六方面提供一种用户设备，包括：处理器、接口电路、存储器和总线；所述处理器、接口电路、存储器通过所述总线连接并完成相互间的通信；
所述接口电路，用于接收基站通过授权载波发送的窗口标识，其中，所述窗口标识对应的窗口中包括m个正交频分复用OFDM符号，m为正整数；
所述处理器，用于用于根据所述接口电路接收的所述窗口标识获取与所述窗口中正交频分复用OFDM符号对应的接收数据的起始位置，所述窗口为所述基站将非授权载波的一个子帧配置为的n个窗口中的一个，其中n为正整数。
结合第六方面，在第一种可能的实现方式中，所述数据包括前导信号。
结合第六方面，在第二种可能的实现方式中，所述接口电路，具体用于接收所述基站发送的下行控制信息DCI，在所述DCI中新增比特，用于指示所述窗口标识。
结合第六方面，在第三种可能的实现方式中，所述接口电路， 具体用于接收所述基站发送的下行控制信息DCI，复用所述DCI中的已有比特，用于指示所述窗口标识。
第七方面，提供一种通信系统，应用于非授权频谱上的数据传输，包括第三方面或第三方面任意一种可能的实现方式所述的任一项所述的基站，以及第四方面或第四方面任意一种可能的实现方式所述的任一项所述的用户设备；
或者，包括第五方面或第五方面任意一种可能的实现方式所述的任一项所述的基站，以及第六方面或第六方面任意一种可能的实现方式所述的任一项所述的用户设备。
本发明的实施例提供的数据传输方法、设备及系统，基站能够将非授权载波的一个子帧配置为n个窗口，其中n为正整数；并获取与发送数据的起始位置对应的OFDM符号所属的窗口的窗口标识；然后将窗口标识通过授权载波发送至用户设备；用户设备接收基站通过授权载波发送的窗口标识后，根据窗口标识获取与窗口中正交频分复用OFDM符号对应的接收数据的起始位置，从而能够减小接收端的盲检测范围，从而降低UE功耗。
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为本发明的实施例提供的一种通信系统的结构示意图；
图2为本发明的实施例提供的一种数据传输方法的流程示意图；
图3为本发明的实施例提供的一种承载数据的窗口划分示意图；
图4为本发明的实施例提供的另一种承载数据的窗口划分示意图；
图5为本发明的另一实施例提供的一种数据传输方法的流程示意图；
图6为本发明的又一实施例提供的一种数据传输方法的流程示意图；
图7为本发明的实施例提供的一种基站的结构示意图；
图8为本发明的实施例提供的一种用户设备的结构示意图；
图9为本发明的另一实施例提供的一种基站的结构示意图；
图10为本发明的另一实施例提供的一种用户设备的结构示意图。
具体实施方式
下面将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。
应理解，本发明实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、LTE频分双工(Frequency Division Duplex，FDD)系统、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)或全球互联微波接入(Worldwide Interoperability for Microwave Access，WiMAX)通信系统等。
本发明的实施例提供的用户设备(英文全称：User Equipment，英文缩写：UE)可以是蜂窝电话、无绳电话、会话启动协议(英文全称：Session Initiation Protocol，英文缩写：SIP)电话、无线本地环路(英文全称：Wireless Local Loop，英文缩写：WLL) 站、个人数字处理(英文全称：Personal Digital Assistant，英文缩写：PDA)、具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它设备。
本发明的实施例提供的基站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通信的设备。基站可用于将收到的空中帧与网际协议(英文全称：Internet Protocol，英文缩写：IP)分组进行相互转换，作为用户设备与接入网的其余部分之间的路由器，其中接入网的其余部分可包括IP网络。基站还可协调对空中接口的属性管理。基站可以是全球移动通信系统(英文全称：Global System for Mobile communication，英文缩写：GSM)或码分多址(英文全称：Code Division Multiple Access，英文缩写：CDMA)中的基站(英文全称：Base Transceiver Station，英文缩写：BTS)，也可以是宽带码分多址(英文全称：Wideband Code Division Multiple Access，英文缩写：WCDMA)中的基站(英文全称：Base Station，英文缩写：BS)，还可以是长期演进(英文全称：Long Term Evolution，英文缩写LTE)中的演进型基站(英文全称：evolutional Node B，英文缩写：NodeB或eNB或e-NodeB)，又如蜂窝无线通信系统中的宏基站和微基站，本发明实施例中并不限定。
本发明的实施例用于如图1所示的通信系统，包括基站D1和用户设备D2，基站D1和用户设备D2需要在非授权频谱中进行数据传输。
具体的，本发明的实施例提供一种数据传输方法，参照图2所示，包括如下步骤：
101、基站将非授权载波的一个子帧配置为n个窗口。
其中，其中n为正整数。
102、基站获取与发送数据的起始位置对应的OFDM符号所属的窗口的窗口标识。其中，窗口标识对应的窗口中包括m个正交频分复用OFDM符号，m为正整数。其中，子帧包含n个窗口，其中n为正整数；其中需要说明的是在在每个子帧中，常规循环前缀(英文 全称：Cyclic Prefix，简称：CP)通常包括14个OFDM符号，扩展CP通常包括12个OFDM(英文全称：Orthogonal Frequency Division Multiplexing，中文全称：正交频分复用技术)符号；对于每个窗口而言应该包含整数个OFDM符号。如图3、4所示，提供一种示例每个子帧中包含12个OFDM符号，则可以将12个OFDM符号等分成n＝3、n＝6个窗口，此时m＝4、m＝2，当然另一种情况是n＝2、m＝6，本发明的实施例中未给出图例，当然，每个窗口中也可以包含不同数量的OFDM符号，此时m≤12。对于常规CP的情况类似不再赘述。
可以理解的是，步骤102中发送数据的起始位置就是基站抢占到非授权载波的时刻。
103、基站将窗口标识通过授权载波发送至用户设备。
104、用户设备接收基站通过授权载波发送的窗口标识。
其中，窗口标识对应的窗口中包括m个正交频分复用OFDM符号，m为正整数。
105、用户设备根据窗口标识获取与窗口中正交频分复用OFDM符号对应的接收数据的起始位置。
其中，窗口为基站将非授权载波的一个子帧配置为的n个窗口中的一个，其中n为正整数。可选的，数据包括前导信号，该前导信号(英文：preamble)用于指示非授权载波上发送数据的起始位置，且一般前导信号在发送报文数据前发送。其中在窗口中获取接收数据的起始位置的方式可以采用现有技术中的盲检方式获取，这里不再赘述。
本发明的实施例提供的数据传输方法，基站能够将非授权载波的一个子帧配置为n个窗口，其中n为正整数；并获取与发送数据的起始位置对应的OFDM符号所属的窗口的窗口标识；然后将窗口标识通过授权载波发送至用户设备；用户设备接收基站通过授权载波发送的窗口标识后，根据窗口标识获取与窗口中正交频分复用OFDM符号对应的接收数据的起始位置，从而能够减小接收端的盲检测范围，从而降低UE功耗。
本发明的另一实施例提供一种数据传输方法，应用于非授权频谱上的数据传输，参照图5所示，包括如下步骤：
201、基站将非授权载波的一个子帧配置为n个窗口。
其中，其中n为正整数。
202、基站获取与发送数据的起始位置对应的OFDM符号所属的窗口的窗口标识。
其中，窗口标识对应的窗口中包括m个正交频分复用OFDM符号，m为正整数。
203、基站在授权载波的下行控制信息DCI中增加用于指示窗口标识的比特，并将DCI发送至用户设备。
示例性的，在授权频谱的DCI中加入新的比特指示窗口标识(n＜＝14)，增加不同的比特数对应着不同的窗口数目，最多增加4个比特；比如增加2比特，则有00、01、10和11四个取值，此时分成四个窗口，00就用于指示窗口标识为1的窗口，01用于指示窗口标识为2的窗口，10用于指示窗口标识为3的窗口，11用于指示窗口标识为4的窗口。所以，如果preamble在窗口标识为2的窗口，那么就发送01给UE，UE通过该指示信息到窗口标识为2的窗口内进行检测，从而缩小了盲检测的范围。
203、用户设备接收基站发送的下行控制信息DCI，在DCI中新增比特，用于指示窗口标识。
204、用户设备根据窗口标识获取与窗口中正交频分复用OFDM符号对应的接收数据的起始位置。
其中，窗口为基站将非授权载波的一个子帧配置为的n个窗口中的一个，其中，n为正整数。
本发明的实施例提供的数据传输方法，基站能够将非授权载波的一个子帧配置为n个窗口，其中n为正整数；并获取与发送数据的起始位置对应的OFDM符号所属的窗口的窗口标识；然后将窗口标识通过授权载波发送至用户设备；用户设备接收基站通过授权载波发送的窗口标识后，根据窗口标识获取与窗口中正交频分复用OFDM 符号对应的接收数据的起始位置，从而能够减小接收端的盲检测范围，从而降低UE功耗。
本发明的另一实施例提供一种数据传输方法，应用于非授权频谱上的数据传输，参照图6所示，包括如下步骤：
301、基站将非授权载波的一个子帧配置为n个窗口。
其中，其中n为正整数。
302、基站获取与发送数据的起始位置对应的OFDM符号所属的窗口的窗口标识。
其中，窗口标识对应的窗口中包括m个正交频分复用OFDM符号，m为正整数。
303、基站复用授权载波的下行控制信息DCI中的已有比特来指示所述窗口标识，并将DCI发送至用户设备。
示例性的，当分组数较少时，可以复用DCI中现有的信令，比如利用DCI中的RV(英文全称：Redundancy Version，中文：冗余版本)版本字段中的1比特来指示窗口标识，当然该方案的缺点是可能会带来一定调度限制。当然也可以从现有的信令中，选择那些没有进行定义的比特位或数字位赋予它新的含义，其中具体方式可以参照在DCI中增加比特的方式这里不再赘述，该方案中能够减少调度限制，减小信令开销，同样的能够缩小盲检测的范围。
304、用户设备接收基站发送的下行控制信息DCI，复用DCI中的已有比特，用于指示窗口标识。
305、用户设备根据窗口标识获取与窗口中正交频分复用OFDM符号对应的接收数据的起始位置。
其中，窗口为基站将非授权载波的一个子帧配置为的n个窗口中的一个，其中，n为正整数。
本发明的实施例提供的数据传输方法，基站能够将非授权载波的一个子帧配置为n个窗口，其中，n为正整数；并获取与发送数据的起始位置对应的OFDM符号所属的窗口的窗口标识；然后将窗口标识通过授权载波发送至用户设备；用户设备接收基站通过授权载 波发送的窗口标识后，根据窗口标识获取与窗口中正交频分复用OFDM符号对应的接收数据的起始位置，从而能够减小接收端的盲检测范围，从而降低UE功耗。
参照图7所示，提供一种基站，包括：
配置单元71，用于将非授权载波的一个子帧配置为n个窗口，其中n为正整数；
获取单元72，获取与发送数据的起始位置对应的OFDM符号所属的窗口的窗口标识，所述窗口标识对应的窗口中包括m个正交频分复用OFDM符号，m为正整数；
发送单元73，用于将所述获取单元72获取的所述窗口标识通过授权载波发送至用户设备。
一种优选方式，数据包括前导信号。
可选的，所述发送单元73具体用于在所述授权载波的下行控制信息DCI中增加用于指示所述窗口标识的比特，并将所述DCI发送至所述用户设备。
可选的，所述发送单元73具体用于复用所述授权载波的下行控制信息DCI中的已有比特来指示所述窗口标识，并将所述DCI发送至所述用户设备。
需要说明的是，本实施例中的发送单元73可以为基站上具备发射功能的接口电路，如发射机。配置单元71、获取单元72可以为单独设立的处理器，也可以集成在基站的某一个处理器中实现，此外，也可以以程序代码的形式存储于基站的存储器中，由基站的某一个处理器调用并执行以上配置单元71、获取单元72的功能。这里所述的处理器可以是一个中央处理器(英文全称：Central Processing Unit，英文简称：CPU)，或者是特定集成电路(英文全称：Application Specific Integrated Circuit，英文简称：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。
本发明的实施例提供的基站能够将非授权载波的一个子帧配置为n个窗口，其中，n为正整数；并获取与发送数据的起始位置对 应的OFDM符号所属的窗口的窗口标识；然后将窗口标识通过授权载波发送至用户设备；以便用户设备接收基站通过授权载波发送的窗口标识后，根据窗口标识获取与窗口中正交频分复用OFDM符号对应的接收数据的起始位置，从而能够减小接收端的盲检测范围，从而降低UE功耗。
参照图8所示，提供一种用户设备，
接收单元81，用于接收基站通过授权载波发送的窗口标识，所述窗口标识对应的窗口中包括m个正交频分复用OFDM符号，m为正整数；
获取单元82，用于根据所述接收单元81接收的所述窗口标识获取与所述窗口中正交频分复用OFDM符号对应的接收数据的起始位置，所述窗口为所述基站将非授权载波的一个子帧配置为的n个窗口中的一个，其中n为正整数。
可选的，所述数据包括前导信号。
可选的，所述接收单元81，具体用于接收所述基站发送的下行控制信息DCI，在所述DCI中新增比特，用于指示所述窗口标识。
可选的，所述接收单元81，具体用于接收所述基站发送的下行控制信息DCI，复用所述DCI中的已有比特，用于指示所述窗口标识。
需要说明的是，本实施例中的接收单元81可以为用户设备中的具备接收功能的接口电路，如：接收机。获取单元82可以为单独设立的处理器，也可以集成在用户设备的某一个处理器中实现，此外，也可以以程序代码的形式存储于用户设备的存储器中，由用户设备的某一个处理器调用并执行以上获取单元82的功能。这里所述的处理器可以是一个中央处理器(英文全称：Central Processing Unit，英文简称：CPU)，或者是特定集成电路(英文全称：Application Specific Integrated Circuit，英文简称：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。
本发明的实施例提供的用户设备，在基站将非授权载波的一个 子帧配置为n个窗口，其中，n为正整数；并获取与发送数据的起始位置对应的OFDM符号所属的窗口的窗口标识；将窗口标识通过授权载波发送至用户设备后；用户设备接收基站通过授权载波发送的窗口标识后，根据窗口标识获取与窗口中正交频分复用OFDM符号对应的接收数据的起始位置，从而能够减小接收端的盲检测范围，从而降低UE功耗。
参照图9所示，提供一种基站，包括：处理器901、接口电路902、存储器903和总线904；处理器901、接口电路902、存储器903通过总线904连接并完成相互间的通信；
需要说明的是，这里的处理器901可以是一个处理器，也可以是多个处理元件的统称。例如，该处理器可以是中央处理器CPU，也可以是特定集成电路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(英文全称：digital singnal processor，英文简称：DSP)，或，一个或者多个现场可编程门阵列(英文全称：Field Programmable Gate Array，英文简称：FPGA)。
存储器903可以是一个存储装置，也可以是多个存储元件的统称，且用于存储可执行程序代码或接入网管理设备运行所需要参数、数据等。且存储器903可以包括随机存储器(英文全称：Random-Access Memory，英文简称：RAM)，也可以包括非易失性存储器(英文全称：non-volatile memory，英文简称：NVRAM)，例如磁盘存储器，闪存(Flash)等。
总线904可以是工业标准体系结构(英文全称：Industry Standard Architecture，英文简称：ISA)总线、外部设备互连(英文全称：Peripheral Component，英文简称：PCI)总线或扩展工业标准体系结构(英文全称：Extended Industry Standard Architecture，英文简称：EISA)总线等。该总线904可以分为地址总线、数据总线、控制总线等。为便于表示，图9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。
所述处理器901，用于将非授权载波的一个子帧配置为n个窗口，其中，n为正整数；获取与发送数据的起始位置对应的OFDM符号所属的窗口的窗口标识，所述窗口标识对应的窗口中包括m个正交频分复用OFDM符号，m为正整数；
所述接口电路902，用于将所述处理器901获取的所述窗口标识通过授权载波发送至用户设备。
本发明的实施例提供的基站能够将非授权载波的一个子帧配置为n个窗口，其中，n为正整数；并获取与发送数据的起始位置对应的OFDM符号所属的窗口的窗口标识；然后将窗口标识通过授权载波发送至用户设备；用户设备接收基站通过授权载波发送的窗口标识后，根据窗口标识获取与窗口中正交频分复用OFDM符号对应的接收数据的起始位置，从而能够减小接收端的盲检测范围，从而降低UE功耗。
进一步的，一种优选方式，所述数据包括前导信号。
可选的，所述接口电路902具体用于在所述授权载波的下行控制信息DCI中增加用于指示所述窗口标识的比特，并将所述DCI发送至所述用户设备。
可选的，所述接口电路902具体用于复用所述授权载波的下行控制信息DCI中的已有比特来指示所述窗口标识，并将所述DCI发送至所述用户设备。
参照图10所示，提供一种用户设备，应用于非授权频谱上的数据传输，包括：处理器1001、接口电路1002、存储器1003和总线1004；处理器1001、接口电路1002、存储器1003通过总线1004连接并完成相互间的通信；
可选的，接口电路1002，用于接收基站通过授权载波发送的窗口标识，所述窗口标识对应的窗口中包括m个正交频分复用OFDM符号，m为正整数；
处理器1001，用于根据所述接口电路1002接收的所述窗口标识获取与所述窗口中正交频分复用OFDM符号对应的接收数据的起 始位置，所述窗口为所述基站将非授权载波的一个子帧配置为的n个窗口中的一个，其中，n为正整数。
本发明的实施例提供的用户设备，在基站将非授权载波的一个子帧配置为n个窗口，其中，n为正整数；并获取与发送数据的起始位置对应的OFDM符号所属的窗口的窗口标识；将窗口标识通过授权载波发送至用户设备后；用户设备接收基站通过授权载波发送的窗口标识，根据窗口标识获取与窗口中正交频分复用OFDM符号对应的接收数据的起始位置，从而能够减小接收端的盲检测范围，从而降低UE功耗。
可选的，所述数据包括前导信号。
可选的，接口电路1102，具体用于接收所述基站发送的下行控制信息DCI，在所述DCI中新增比特，用于指示所述窗口标识。
可选的，接口电路1102，具体用于接收所述基站发送的下行控制信息DCI，复用所述DCI中的已有比特，用于指示所述窗口标识。
此外，还提供一种计算可读媒体(或介质)，包括在被执行时进行以下操作的计算机可读指令：执行上述实施例中的方法的101至105、201至205、301至305的操作。
另外，还提供一种计算机程序产品，包括上述计算机可读介质。
应理解，在本发明的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本发明实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
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，上述描述的系统、装置和单元的具体工作过程，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。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，设备或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
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存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品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全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(英文简称：ROM，英文全称：Read-Only Memory)、随机存取存储器(英文简称：RAM，英文全称：Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技 术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应所述以权利要求的保护范围为准。

Claims (25)

  1. 一种数据传输方法，其特征在于，包括：
    基站将非授权载波的一个子帧配置为n个窗口，其中n为正整数；
    所述基站获取与发送数据的起始位置对应的OFDM符号所属的窗口的窗口标识，其中，所述窗口标识对应的窗口中包括m个正交频分复用OFDM符号，m为正整数；
    所述基站将所述窗口标识通过授权载波发送至用户设备。
  2. 根据权利要求1所述的方法，其特征在于，所述数据包括前导信号。
  3. 根据权利要求1所述的方法，其特征在于，所述基站将所述窗口标识通过授权载波发送至用户设备包括：
    所述基站在所述授权载波的下行控制信息DCI中增加用于指示所述窗口标识的比特，并将所述DCI发送至所述用户设备。
  4. 根据权利要求1所述的方法，其特征在于，所述基站将所述窗口标识通过授权载波发送至用户设备包括：
    所述基站复用所述授权载波的下行控制信息DCI中的已有比特来指示所述窗口标识，并将所述DCI发送至所述用户设备。
  5. 一种数据传输方法，其特征在于，包括：
    用户设备接收基站通过授权载波发送的窗口标识，其中，所述窗口标识对应的窗口中包括m个正交频分复用OFDM符号，m为正整数；
    所述用户设备根据所述窗口标识获取与所述窗口中正交频分复用OFDM符号对应的接收数据的起始位置，所述窗口为所述基站将非授权载波的一个子帧配置为的n个窗口中的一个，其中n为正整数。
  6. 根据权利要求5所述的方法，其特征在于，所述数据包括前导信号。
  7. 根据权利要求5所述的方法，其特征在于，所述用户设备接收基站通过授权载波发送的窗口标识包括：
    所述用户设备接收所述基站发送的下行控制信息DCI，在所述DCI中新增比特，用于指示所述窗口标识。
  8. 根据权利要求5所述的方法，其特征在于，所述用户设备接收基站通过授权载波发送的窗口标识包括：
    所述用户设备接收所述基站发送的下行控制信息DCI，复用所述DCI中的已有比特，用于指示所述窗口标识。
  9. 一种基站，其特征在于，包括：
    配置单元，用于将非授权载波的一个子帧配置为n个窗口，其中n为正整数；
    获取单元，获取与发送数据的起始位置对应的OFDM符号所属的窗口的窗口标识，其中，所述窗口标识对应的窗口中包括m个正交频分复用OFDM符号，m为正整数；
    发送单元，用于将所述获取单元获取的所述窗口标识通过授权载波发送至用户设备。
  10. 根据权利要求9所述的基站，其特征在于，所述数据包括前导信号。
  11. 根据权利要求9所述的基站，其特征在于，所述发送单元具体用于在所述授权载波的下行控制信息DCI中增加用于指示所述窗口标识的比特，并将所述DCI发送至所述用户设备。
  12. 根据权利要求9所述的基站，其特征在于，所述发送单元具体用于复用所述授权载波的下行控制信息DCI中的已有比特来指示所述窗口标识，并将所述DCI发送至所述用户设备。
  13. 一种用户设备，其特征在于，包括：
    接收单元，用于接收基站通过授权载波发送的窗口标识，其中，所述窗口标识对应的窗口中包括m个正交频分复用OFDM符号，m为正整数；
    获取单元，用于根据所述接收单元接收的所述窗口标识获取与所述窗口中正交频分复用OFDM符号对应的接收数据的起始位置，所述窗口为所述基站将非授权载波的一个子帧配置为的n个窗口中的一个，其中n为正整数。
  14. 根据权利要求13所述的设备，其特征在于，所述数据包括 前导信号。
  15. 根据权利要求13所述的设备，其特征在于，所述接收单元，具体用于接收所述基站发送的下行控制信息DCI，在所述DCI中新增比特，用于指示所述窗口标识。
  16. 根据权利要求13所述的设备，其特征在于，所述接收单元，具体用于接收所述基站发送的下行控制信息DCI，复用所述DCI中的已有比特，用于指示所述窗口标识。
  17. 一种基站，其特征在于，包括：处理器、接口电路、存储器和总线；所述处理器、接口电路、存储器通过所述总线连接并完成相互间的通信；
    所述处理器，用于将非授权载波的一个子帧配置为n个窗口，其中n为正整数；获取与发送数据的起始位置对应的OFDM符号所属的窗口的窗口标识，其中，所述窗口标识对应的窗口中包括m个正交频分复用OFDM符号，m为正整数；
    所述接口电路，用于将所述处理器获取的所述窗口标识通过授权载波发送至用户设备。
  18. 根据权利要求17所述的基站，其特征在于，所述数据包括前导信号。
  19. 根据权利要求17所述的基站，其特征在于，所述接口电路具体用于在所述授权载波的下行控制信息DCI中增加用于指示所述窗口标识的比特，并将所述DCI发送至所述用户设备。
  20. 根据权利要求17所述的基站，其特征在于，所述接口电路具体用于复用所述授权载波的下行控制信息DCI中的已有比特来指示所述窗口标识，并将所述DCI发送至所述用户设备。
  21. 一种用户设备，其特征在于，包括：处理器、接口电路、存储器和总线；所述处理器、接口电路、存储器通过所述总线连接并完成相互间的通信；
    所述接口电路，用于接收基站通过授权载波发送的窗口标识，其中，所述窗口标识对应的窗口中包括m个正交频分复用OFDM符号，m 为正整数；
    所述处理器，用于根据所述接口电路接收的所述窗口标识获取与所述窗口中正交频分复用OFDM符号对应的接收数据的起始位置，所述窗口为所述基站将非授权载波的一个子帧配置为的n个窗口中的一个，其中n为正整数。
  22. 根据权利要求21所述的设备，其特征在于，所述数据包括前导信号。
  23. 根据权利要求21所述的设备，其特征在于，所述接口电路，具体用于接收所述基站发送的下行控制信息DCI，在所述DCI中新增比特，用于指示所述窗口标识。
  24. 根据权利要求21所述的设备，其特征在于，所述接口电路，具体用于接收所述基站发送的下行控制信息DCI，复用所述DCI中的已有比特，用于指示所述窗口标识。
  25. 一种通信系统，其特征在于，应用于非授权频谱上的数据传输，包括权利要求9-12任一项所述的基站，以及权利要求13-16任一项所述的用户设备；
    或者，包括权利要求17-20任一项所述的基站，以及权利要求21-24任一项所述的用户设备。
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