WO2018040645A1 - 传输信息的方法及其设备 - Google Patents

传输信息的方法及其设备 Download PDF

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Publication number
WO2018040645A1
WO2018040645A1 PCT/CN2017/086602 CN2017086602W WO2018040645A1 WO 2018040645 A1 WO2018040645 A1 WO 2018040645A1 CN 2017086602 W CN2017086602 W CN 2017086602W WO 2018040645 A1 WO2018040645 A1 WO 2018040645A1
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Prior art keywords
frequency
khz
hopping channel
frequency hopping
subcarrier
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PCT/CN2017/086602
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English (en)
French (fr)
Inventor
张言飞
张武荣
于光炜
温容慧
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华为技术有限公司
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Publication of WO2018040645A1 publication Critical patent/WO2018040645A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H04B1/7136—Arrangements for generation of hop frequencies, e.g. using a bank of frequency sources, using continuous tuning or using a transform
    • 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
    • H04L27/2626—Arrangements specific to the transmitter only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H04B1/7136—Arrangements for generation of hop frequencies, e.g. using a bank of frequency sources, using continuous tuning or using a transform
    • H04B2001/71362—Arrangements for generation of hop frequencies, e.g. using a bank of frequency sources, using continuous tuning or using a transform using a bank of frequency sources

Definitions

  • the embodiments of the present application relate to the field of communications, and more specifically, to a method and device for transmitting information.
  • Orthogonal Frequency Division Multiple Access is a combination of Orthogonal Frequency Division Multiplexing (OFDM) and Frequency Division Multiple Access (FDMA). It is a transmission method in which 110 transmission data is loaded on a part of subcarriers after sub-carrierization of the channel by OFDM.
  • the frequency resource of the spectrum is large, and the transmission is suitable for adopting a frequency hopping mechanism, thereby having better anti-interference and anti-fading.
  • a frequency hopping mechanism is employed in an OFDMA system, it means that the subcarrier resources allocated to the user equipment change over time. In each hopping time unit, the user extracts only a few subcarriers (frequency hopping channels composed of subcarrier groups) in all subcarriers, and on the next hopping time unit, the user randomly uses several other subcarriers (in addition The subcarrier group consists of a frequency hopping channel).
  • the frequency hopping channel is composed of specific subcarriers, there is no guard interval between the hopping channels, and the signal leaks out of the channel. Therefore, the frequency hopping scheme cannot meet the hopping channel specified in the regulations.
  • the bandwidth must be greater than or equal to the 20 dB bandwidth requirement of the signal.
  • the embodiment of the present application provides a method for transmitting information, which can reduce signal interference between frequency hopping channels.
  • a method for transmitting information comprising: determining a first frequency hopping channel, wherein the first frequency hopping channel and an adjacent first There is one empty subcarrier between the two hopping channels, the null subcarrier is a subcarrier that is not used to carry useful information, the first hopping channel includes m consecutive subcarriers, and the second hopping channel includes n consecutive a subcarrier, where m, n is an integer greater than or equal to 1; information is transmitted on the first hopping channel.
  • the subcarrier is a minimum frequency unit carrying a signal in the frequency domain, and each frequency hopping channel is composed of at least one subcarrier, and thus the frequency hopping channel is used to carry useful information transmitted by the base station or the user equipment.
  • the first hopping channel may be any hopping channel in the system bandwidth, which is not limited in this application.
  • embodiments of the present application may transmit information by using a first frequency hopping channel and/or a second frequency hopping with one null subcarrier.
  • the embodiment of the present application can reduce the interference of signals between the first frequency hopping channel and the second frequency hopping channel by transmitting information on the first frequency hopping channel having one empty subcarrier with the adjacent second frequency hopping channel.
  • the first frequency hopping channel and the second frequency hopping channel are located in a target frequency band when 25 kHz ⁇ (m+n)/2*f
  • Q is the number of subcarriers above the target frequency band
  • f is the frequency interval between two adjacent subcarriers
  • f is a positive real number
  • the present application combines an OFDM frequency hopping system with related regulatory constraints, and the method for subcarrier division of the OFDM system is such that one subcarrier is vacated between the hopping channels, which can reduce the channel. Inter-interference can meet regulatory restrictions.
  • the method includes: moving a center frequency of a baseband signal obtained by performing OFDM modulation by a user equipment to a space of a target frequency band On the carrier, wherein the user equipment performs information transmission on the first frequency hopping channel.
  • the method in the embodiment of the present application can shift the baseband DC position to the null subcarrier, and reduce the interference of the baseband DC to other subcarriers.
  • the frequency interval f is any one of the following: 3.75 kHz, 7.5 kHz, 15 kHz.
  • a user equipment is provided for performing the method of any of the above first aspect or any of the possible implementations of the first aspect.
  • the network device comprises means for performing the method of any of the above-described first aspect or any of the possible implementations of the first aspect.
  • a network device for performing the method of any of the first aspect or the first aspect of the first aspect.
  • the network device comprises means for performing the method of any of the above-described first aspect or any of the possible implementations of the first aspect.
  • an apparatus comprising: the apparatus comprising: a transceiver, a memory, a processor, and a bus system.
  • the transceiver, the memory and the processor are coupled by the bus system for storing instructions for executing instructions stored by the memory to control the transceiver to receive signals and/or transmit signals, and
  • the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of the first aspect or any of the possible implementations of the first aspect.
  • a computer readable medium for storing a computer program, the computer program comprising instructions for performing the method of the first aspect or any of the possible implementations of the first aspect.
  • FIG. 1 is a diagram of a wireless communication system in accordance with various embodiments described herein.
  • FIG. 2 is a schematic diagram of a prior art OFDMA frequency hopping system.
  • 3 is a schematic diagram of the power spectrum of an OFDMA frequency hopping system without guard spacing.
  • FIG. 4 is a schematic diagram of the power spectrum of an OFDMA frequency hopping system without guard spacing.
  • Figure 5 is a schematic flow diagram of one method of the present application.
  • Figure 6 is a schematic illustration of a method of one embodiment of the present application.
  • FIG. 7 is a schematic diagram of a method of another embodiment of the present application.
  • FIG. 8 is a schematic block diagram of a user equipment according to an embodiment of the present application.
  • FIG. 9 is a schematic block diagram of a network device according to another embodiment of the present application.
  • Figure 10 is a schematic block diagram of an apparatus of one embodiment of the present application.
  • FIG. 1 is a diagram of a wireless communication system in accordance with various embodiments described herein.
  • a component can be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer.
  • an application running on a computing device and a computing device can be a component.
  • One or more components can reside within a process and/or execution thread, and the components can be located on one computer and/or distributed between two or more computers.
  • these components can execute from various computer readable media having various data structures stored thereon.
  • a component may, for example, be based on signals having one or more data packets (eg, data from two components interacting with another component between the local system, the distributed system, and/or the network, such as the Internet interacting with other systems) Communicate through local and/or remote processes.
  • data packets eg, data from two components interacting with another component between the local system, the distributed system, and/or the network, such as the Internet interacting with other systems
  • the base station can be used for communicating with a mobile device, and the base station can be a Global System of Mobile communication (GSM) or a Base Transceiver Station (BTS) in Code Division Multiple Access (CDMA), or
  • GSM Global System of Mobile communication
  • BTS Base Transceiver Station
  • CDMA Code Division Multiple Access
  • NodeB, NB in the Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • eNB evolved base station
  • LTE Long Term Evolution
  • an access terminal which may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, and a wireless communication device.
  • User agent user equipment or user equipment (User Equipment, UE).
  • the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the term "article of manufacture” as used in this application encompasses a computer program accessible from any computer-readable device, carrier, or media.
  • the computer readable medium may include, but is not limited to, a magnetic storage device (eg, a hard disk, a floppy disk, or a magnetic tape, etc.), such as a compact disk (CD), a digital versatile disk (Digital Versatile Disk, DVD). Etc.), smart cards and flash memory devices (eg, Erasable Programmable Read-Only Memory (EPROM), cards, sticks or key drivers, etc.).
  • various storage media described herein can represent one or more devices and/or other machine-readable media for storing information.
  • the term "machine-readable medium” may include, but is not limited to, a wireless channel and various other mediums capable of storing, containing, and/or carrying instructions and/or data.
  • the wireless communication system 100 includes a base station 102 that can include multiple antenna groups.
  • Each antenna group may include one or more antennas, for example, one antenna group may include antennas 104 and 106, another antenna group may include antennas 108 and 110, and an additional group may include antennas 112 and 114.
  • Figure 2 shows 2 antennas for each antenna group, but for each group Use more or fewer antennas.
  • Base station 102 can additionally include a transmitter chain and a receiver chain, as will be understood by those of ordinary skill in the art, which can include multiple components associated with signal transmission and reception (e.g., processor, modulator, multiplexer, demodulation) , demultiplexer or antenna, etc.).
  • Base station 102 can communicate with one or more access terminals, such as access terminal 116 and access terminal 122. However, it will be appreciated that base station 102 can communicate with any number of access terminals similar to access terminal 116 or 122. Access terminals 116 and 122 can be, for example, cellular telephones, smart phones, portable computers, handheld communication devices, handheld computing devices, satellite radios, global positioning systems, PDAs, and/or any other for communicating over wireless communication system 100. Suitable for equipment. As shown, access terminal 116 is in communication with antennas 112 and 114, with antennas 112 and 114 transmitting information to access terminal 116 over forward link 118 and receiving information from access terminal 116 over reverse link 120.
  • access terminal 116 is in communication with antennas 112 and 114, with antennas 112 and 114 transmitting information to access terminal 116 over forward link 118 and receiving information from access terminal 116 over reverse link 120.
  • access terminal 122 is in communication with antennas 104 and 106, wherein antennas 104 and 106 transmit information to access terminal 122 over forward link 124 and receive information from access terminal 122 over reverse link 126.
  • FDD Frequency Division Duplex
  • the forward link 118 can utilize a different frequency band than that used by the reverse link 120, and the forward link 124 can utilize the reverse link 126. Different frequency bands used.
  • TDD Time Division Duplex
  • the forward link 118 and the reverse link 120 can use a common frequency band
  • the forward link 124 and the reverse link 126 can use a common frequency band.
  • Each set of antennas and/or regions designed for communication is referred to as a sector of base station 102.
  • the antenna group can be designed to communicate with access terminals in sectors of the coverage area of base station 102.
  • the transmit antenna of base station 102 may utilize beamforming to improve the signal to noise ratio of forward links 118 and 124.
  • the base station 102 uses beamforming to transmit signals to the randomly dispersed access terminals 116 and 122 in the relevant coverage area, the base station 102 uses a single antenna to transmit signals to all of its access terminals. Mobile devices are subject to less interference.
  • base station 102, access terminal 116, or access terminal 122 may be a wireless communication transmitting device and/or a wireless communication receiving device.
  • the wireless communication transmitting device can encode the data for transmission.
  • the wireless communication transmitting device may acquire (eg, generate, receive from other communication devices, or save in memory, etc.) a certain number of data bits to be transmitted over the channel to the wireless communication receiving device.
  • Such data bits may be included in a transport block (or multiple transport blocks) of data that may be segmented to produce multiple code blocks.
  • FIG. 2 is a schematic diagram of a prior art OFDMA frequency hopping system.
  • Figure 2 shows an OFDMA frequency hopping system with 1 OFDM symbol as a frequency hopping time unit.
  • the abscissa is the time axis, with 1 OFDM symbol as the time unit; the ordinate is the frequency axis.
  • a plurality of subcarriers form a frequency hopping channel, and a user equipment uses a frequency hopping channel for signal transmission in a frequency hopping time unit characterized by an OFDM symbol.
  • Two user equipments are shown in the figure: user equipment 1 and user equipment 2. Taking user equipment 1 as an example, different hopping channels are used for signal transmission on two adjacent OFDM symbol units.
  • the channel division of the frequency hopping system has the following requirements: the frequency hopping channel of the frequency hopping system is divided by the 20 dB bandwidth of the signal or the channel spacing of at least 25 kHz, to two The larger of the values is accurate. Therefore, the interval of the frequency hopping channel must be greater than or equal to 25 kHz, and the 20 dB bandwidth of the signal must not exceed the channel bandwidth.
  • 3 and 4 are diagrams showing power spectra of an unprotected interval OFDMA frequency hopping system, where vertical lines are boundaries of frequency hopping channels, and each boundary corresponds to the center of subcarriers at the edge position of one frequency hopping channel in an OFDM system. frequency.
  • the signal shown in Figure 3 is not filtered.
  • the signal in Figure 4 is the filtered signal power spectrum. It can be seen that even after filtering, the signal power at the channel boundary does not fall below 20 dB. Therefore, this frequency hopping scheme without guard interval cannot meet regulatory restrictions.
  • Figure 5 is a schematic flow diagram of one method of the present application.
  • the executor of the method may be a user equipment or a network device, as shown in FIG. 5, the method includes:
  • Step 410 Determine a first frequency hopping channel, where there is a null subcarrier between the first hopping channel and the adjacent second hopping channel, where the null subcarrier is a subcarrier that is not used to carry useful information, and the first frequency hopping
  • the channel includes m consecutive subcarriers
  • the second hopping channel includes n consecutive subcarriers, where m, n are integers greater than or equal to one.
  • Step 420 transmitting information on the first frequency hopping channel.
  • the subcarriers are minimum frequency units carrying signals on the frequency domain, and each frequency hopping channel is composed of at least one subcarrier, and thus the frequency hopping channel is used to carry useful information sent by the base station or the user equipment.
  • the first hopping channel may be any hopping channel in the system bandwidth, which is not limited in this application.
  • the information transmitted on the first frequency hopping channel or the second frequency hopping channel may refer to the uplink data transmission of the user equipment to the network equipment, and may also refer to the downlink data transmission of the network equipment to the user equipment. It should also be understood that the user equipment may choose to transmit signals on the first frequency hopping channel and/or the second frequency hopping channel in different time domains.
  • the user equipment 1 can send data to the network device as an example.
  • the user equipment 1 can perform data transmission on the first frequency hopping channel, and the user equipment 2 can select the second frequency hopping channel. Data transfer. Since there is one empty subcarrier between the first frequency hopping channel and the second frequency hopping channel, the signal isolation effect can be achieved.
  • the signals of different user equipments may be carried on the first frequency hopping channel and the second frequency hopping channel, and the first frequency hopping channel and the second frequency hopping channel may be used. There is an empty subcarrier between them, so it can also have the effect of signal isolation.
  • different frequency hopping channels can be selected for data transmission in different time periods.
  • the embodiment of the present application can reduce the interference of signals between the first frequency hopping channel and the second frequency hopping channel by transmitting information on the first frequency hopping channel having one empty subcarrier with the adjacent second frequency hopping channel.
  • the first frequency hopping channel and the second frequency hopping channel are located in a target frequency band, and the target frequency band may be a subset of the 902-928 MHz unlicensed frequency band.
  • the number of frequency hopping channels is limited as follows: if the frequency hopping channel bandwidth is less than 250 kHz, the frequency hopping system at least makes 50 hopping channels are used; if the bandwidth of the hopping channel is greater than or equal to 250 kHz, the frequency hopping system uses at least 25 frequency hopping channels.
  • the present application combines an OFDM frequency hopping system with related regulatory constraints, and the method for subcarrier division of the OFDM system is such that one subcarrier is vacated between the hopping channels, which can reduce the channel. Inter-interference can meet regulatory restrictions.
  • the center frequency of the baseband signal obtained when the user equipment performs OFDM modulation is moved to a null subcarrier of the target frequency band, where the user equipment performs information transmission on the first frequency hopping channel.
  • the baseband signal center that is, the direct component (DC) position
  • DC direct component
  • the baseband signal center in LTE is only half of the subcarriers carrying the wanted signal. Therefore, since there is one empty subcarrier between two adjacent channels in the embodiment of the present application, the user equipment is performed.
  • the center frequency of the baseband signal obtained during OFDM modulation is shifted to the null subcarrier of the target frequency band, that is, the baseband DC position is modulated at the center position of the null subcarrier, and the baseband DC position distance between the subcarriers carrying the useful signal exists.
  • the distance between subcarrier spacings is shifted to the null subcarrier of the target frequency band, that is, the baseband DC position is modulated at the center position of the null subcarrier, and the baseband DC position distance between the subcarriers carrying the useful signal exists.
  • the baseband signal when the uplink SC-FDMA baseband signal is generated, the baseband signal is offset by half of the subcarriers (k+1/2 in the formula), such that the DC corresponds to the intermediate position of the two subcarriers.
  • This formula represents the time domain continuous signal on symbol l on antenna port p Generate a formula.
  • the meaning of the above formula is: for the time domain symbol 1, starting from the subcarrier numbered 0 (ie, the first subcarrier, the subcarrier with the lowest center frequency), the modulation content (bearing information) on each subcarrier is (If the subcarrier is not used, its value is 0), multiply each ecarrier by a different e-index (that is, loading frequency information). Finally, the signals after each subcarrier loading frequency are superimposed to obtain the baseband signal on symbol 1.
  • k denotes the number of each subcarrier
  • +n denotes that each subcarrier is shifted to n subcarriers at a high frequency during modulation, and the final effect is that the baseband signal is shifted to n subcarriers at a high frequency as a whole.
  • the method in the embodiment of the present application can shift the baseband DC position to the null subcarrier, and reduce the interference of the baseband DC to other subcarriers.
  • the frequency interval f is any one of the following:
  • Figure 6 is a schematic illustration of a method of one embodiment of the present application.
  • the subcarrier spacing between two adjacent subcarriers is 3.75 kHz, so there are a total of 401 subcarriers in the bandwidth of 1.5 MHz, numbered [0, 1, 2, ..., 400], respectively.
  • the subcarriers numbered 8*(i-1) are not used to carry useful information, which is called null subcarrier, and the null subcarrier is used as the boundary of the frequency hopping channel.
  • the hopping channel boundary of one frequency hopping channel includes 7 subcarriers. It is used to carry or transmit the useful signal.
  • the subcarriers numbered 0 and 400 are the boundary of the entire system bandwidth, and do not count the boundary of the frequency hopping channel. Therefore, there are 49 empty subcarriers.
  • the subcarrier spacing is 3.75 kHz, and every 7 consecutive subcarriers, there is one empty subcarrier, and the number of null subcarriers is not less than 49.
  • FIG. 7 is a schematic diagram of a method of another embodiment of the present application.
  • each subcarrier is separated by one subcarrier as a boundary of the hopping channel, and each hopping channel includes one subband.
  • Carrier Specifically, the solid line in the figure is the used subcarrier, and the broken line is the empty subcarrier.
  • FIG. 8 is a schematic block diagram of a user equipment according to an embodiment of the present application. As shown in FIG. 8, the user equipment 700 is applied to an OFDM frequency hopping system, including:
  • a determining unit 710 configured to determine a first frequency hopping channel, where the first hopping channel and the adjacent second hopping channel have one empty subcarrier, where the null subcarrier is not used a subcarrier carrying useful information, the first hopping channel includes m consecutive subcarriers, and the second hopping channel includes n consecutive subcarriers, where m, n is an integer greater than or equal to 1;
  • the sending unit 720 is configured to send information on the first frequency hopping channel.
  • the first frequency hopping channel and the second frequency hopping channel are located in a target frequency band, and the target frequency band may be a subset of an 902-928 MHz unlicensed frequency band.
  • the determining unit 710 is further configured to:
  • the center frequency of the baseband signal obtained when the user equipment performs OFDM modulation is moved to a null subcarrier of the target frequency band.
  • the frequency interval f is any one of the following:
  • the embodiment of the present application can reduce the interference of signals between the first frequency hopping channel and the second frequency hopping channel by transmitting information on the first frequency hopping channel and/or the second frequency hopping frequency with one null subcarrier.
  • FIG. 9 is a schematic block diagram of a network device 800 according to another embodiment of the present application.
  • the network device 800 is applied to an orthogonal frequency division multiplexing OFDM frequency hopping system, including:
  • a determining unit 810 configured to determine a first frequency hopping channel and a second frequency hopping channel located in a target frequency band, wherein a first one of the first frequency hopping channel and the adjacent second frequency hopping channel exists a null subcarrier, the null subcarrier is a subcarrier not used to carry useful information, the first hopping channel includes m consecutive subcarriers, and the second hopping channel includes n consecutive subcarriers, where m, n An integer greater than or equal to 1;
  • the receiving unit 810 is configured to receive information on the target frequency band.
  • the target frequency band is a subset of the 902-928 MHz unlicensed frequency band.
  • the frequency interval f is any one of the following:
  • the embodiment of the present application can reduce the interference of signals between the first frequency hopping channel and the second frequency hopping channel by transmitting information on the first frequency hopping channel and/or the second frequency hopping frequency with one null subcarrier.
  • Figure 10 is a schematic block diagram of an apparatus of one embodiment of the present application.
  • the apparatus 900 includes a processor 910, a transceiver 920, and a memory 930.
  • the processor 910, the transceiver 920 and the memory 930 are connected by a bus system for storing instructions, and the processor 910 is configured to execute instructions stored in the memory 930 to control the transceiver 920 to send signals and receive signals. .
  • Memory 930 can include read only memory and random access memory and provides instructions and data to processor 910.
  • the various components of the transmitting device 900 are coupled together by a bus system.
  • the transmitting device 900 can be the base station 102 shown in FIG.
  • the sending device 900 can implement the corresponding processes in the foregoing method embodiments. To avoid repetition, details are not described herein again.
  • the processor 910 may be a central processing unit (“CPU"), and the processor 910 may also be other general-purpose processors, digital signal processors (DSPs). , an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, and the like.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • Memory 930 can include read only memory and random access memory and provides instructions and data to processor 11. A portion of the memory 930 may also include a non-volatile random access memory. For example, the memory 930 can also store information of the device type.
  • each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 910 or an instruction in a form of software.
  • the steps of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 930, and the processor 910 reads the information in the memory 930 and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • RAM random access memory
  • ROM read only memory
  • EEPROM electrically programmable ROM
  • EEPROM electrically erasable programmable ROM
  • registers hard disk, removable disk, CD-ROM, Or any other form of storage medium known in the art.

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Abstract

本申请实施例提供一种传输信息的方法，该方法应用于正交频分复用OFDM跳频系统，包括：确定第一跳频信道，其中，所述第一跳频信道与相邻的第二跳频信道之间存在一个空子载波，所述空子载波为不用于承载有用信息的子载波，所述第一跳频信道包括m个连续子载波，所述第二跳频信道包括n个连续子载波，其中，m，n为大于或等于1的整数；在所述第一跳频信道上传输信息。因此，本申请实施例通过在与相邻的第二跳频信道具有一个空子载波的第一跳频信道上传输信息，能够降低第一跳频信道与第二跳频信道之间信号的干扰。

Description

传输信息的方法及其设备
本申请要求于2016年08月31日提交中国专利局、申请号为201610788053.3、发明名称为“传输信息的方法及其设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信领域，并且更具体地，涉及一种传输信息的方法及设备。
背景技术
正交频分多址技术(Orthogonal Frequency Division Multiple Access，OFDMA)是正交频分复用技术(Orthogonal Frequency Division Multiplexing，OFDM)与频分多址技术(Frequency Division Multiple Access，FDMA)的结合，也就是在利用OFDM对信道进行子载波化后，在部分子载波上加载110传输数据的一种传输方法。
此外，在非授权频段，频谱的频率资源较多，传输适于采用跳频机制，从而具有较好的抗干扰和抗衰落性。在OFDMA系统中如果采用跳频机制，意味着分配给用户设备的子载波资源随时间变化。在每一个跳频时间单元内，用户只在所有子载波中抽取若干子载波(子载波组组成的跳频信道)使用，而在下一个跳频时间单元上，用户随机使用其他若干个子载波(另外的子载波组组成的跳频信道)使用。
现有跳频OFDMA方案中，跳频信道虽然由具体子载波组成，但跳频信道之间没有保护间隔，信号会泄露到信道之外，因此该跳频方案无法满足法规中规定跳频信道的带宽必须大于等于信号20dB带宽的要求。
发明内容
本申请实施例提供一种传输信息的方法，能够降低跳频信道之间的信号干扰。
第一方面，提供一种传输信息的方法，该方法应用于正交频分复用OFDM跳频系统，包括：确定第一跳频信道，其中，所述第一跳频信道与相邻的第二跳频信道之间存在一个空子载波，所述空子载波为不用于承载有用信息的子载波，所述第一跳频信道包括m个连续子载波，所述第二跳频信道包括n个连续子载波，其中，m，n为大于或等于1的整数；在所述第一跳频信道上传输信息。
子载波为频域上承载信号的最小频率单元，每个跳频信道由至少一个子载波组成，因此跳频信道用于承载基站或用户设备发送的有用信息。其中，第一跳频信道可以为系统带宽内的任意一个跳频信道，本申请不作限定。第一跳频信道与相邻的第二跳频信道之间存在一个空子载波，该空子载波的中心频率位置即第一跳频信道与所述第二跳频信道之间的信道边界。
应理解，本申请实施例可以通过在具有一个空子载波的第一跳频信道和/或第二跳频传输信息。
因此，本申请实施例通过在与相邻的第二跳频信道具有一个空子载波的第一跳频信道上传输信息，能够降低第一跳频信道与第二跳频信道之间信号的干扰。
结合第一方面，在第一方面的第一种可能的实现方式中，所述第一跳频信道、所述第二跳频信道位于目标频段，当25kHz≤(m+n)/2*f≤250kHz时，Q≥49；当250kHz ≤(m+n)/2*f≤500kHz时，Q≥24，其中，Q为所述目标频段上空子载波的数目，f为两个相邻子载波之间的频率间隔，f为正实数，单位为kHz。
因此，本申请实施例的方法，本申请将OFDM跳频系统与相关的法规约束相结合，该方法对OFDM系统的子载波划分规则使得跳频信道之间空一个子载波，既能够降低信道之间的相互干扰，又能够满足法规限制。
结合第一方面及其上述实现方式，在第一方面的第二种可能的实现方式中，所述方法包括：将用户设备进行OFDM调制时得到的基带信号的中心频点移到目标频段的空子载波上，其中所述用户设备在第一跳频信道上进行信息传输。
因此，本申请实施例的方法可以将基带DC位置偏移到空子载波上，减小基带DC对其他子载波的干扰。
结合第一方面，在第一方面的第三种可能的实现方式中，所述频率间隔f为下列中的任意一种：3.75kHz，7.5kHz，15kHz。
第二方面，提供一种用户设备，用于执行上述第一方面或第一方面的任意可能的实现方式中的方法。具体地，该网络设备包括用于执行上述第一方面或第一方面的任意可能的实现方式中的方法的单元。
第三方面，提供一种网络设备，用于执行上述第一方面或第一方面的任意可能的实现方式中的方法。具体地，该网络设备包括用于执行上述第一方面或第一方面的任意可能的实现方式中的方法的单元。
第四方面，提供一种装置，该装置包括：该装置包括：收发器、存储器、处理器和总线系统。其中，该收发器、该存储器和该处理器通过该总线系统相连，该存储器用于存储指令，该处理器用于执行该存储器存储的指令，以控制该收发器接收信号和/或发送信号，并且当该处理器执行该存储器存储的指令时，该执行使得该处理器执行第一方面或第一方面的任意可能的实现方式中的方法。
第五方面，提供了一种计算机可读介质，用于存储计算机程序，该计算机程序包括用于执行第一方面或第一方面的任意可能的实现方式中的方法的指令。
附图说明
图1是根据本文所述的各个实施例的无线通信系统的示图。
图2是现有技术OFDMA跳频系统的示意图。
图3是无保护间隔的OFDMA跳频系统的功率谱的示意图。
图4是无保护间隔的OFDMA跳频系统的功率谱的示意图。
图5是本申请一个方法的示意性流程图。
图6是本申请一个实施例的方法的示意图。
图7是本申请另一实施例的方法的示意图。
图8是本申请一个实施例的用户设备的示意性框图。
图9是本申请另一实施例的网络设备的示意性框图。
图10是本申请一个实施例的装置的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整 地描述。
图1是根据本文所述的各个实施例的无线通信系统的示图。
现在参照附图描述多个实施例，其中用相同的附图标记指示本文中的相同元件。在下面的描述中，为便于解释，给出了大量具体细节，以便提供对一个或多个实施例的全面理解。然而，很明显，也可以不用这些具体细节来实现所述实施例。在其它例子中，以方框图形式示出公知结构和设备，以便于描述一个或多个实施例。
在本说明书中使用的术语"部件"、"模块"、"系统"等用于表示计算机相关的实体、硬件、固件、硬件和软件的组合、软件、或执行中的软件。例如，部件可以是但不限于，在处理器上运行的进程、处理器、对象、可执行文件、执行线程、程序和/或计算机。通过图示，在计算设备上运行的应用和计算设备都可以是部件。一个或多个部件可驻留在进程和/或执行线程中，部件可位于一个计算机上和/或分布在2个或更多个计算机之间。此外，这些部件可从在上面存储有各种数据结构的各种计算机可读介质执行。部件可例如根据具有一个或多个数据分组(例如来自与本地系统、分布式系统和/或网络间的另一部件交互的二个部件的数据，例如通过信号与其它系统交互的互联网)的信号通过本地和/或远程进程来通信。
此外，结合基站描述了各个实施例。基站可用于与移动设备通信，基站可以是全球移动通讯(Global System of Mobile communication，GSM)或码分多址(Code Division Multiple Access，CDMA)中的基站(Base Transceiver Station，BTS)，也可以是宽带码分多址(Wideband Code Division Multiple Access，WCDMA)中的基站(NodeB，NB)，还可以是长期演进(Long Term Evolution，LTE)中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者中继站或接入点，或者未来5G网络中的基站设备等。此外，结合接入终端描述了各个实施例，接入终端也可以称为系统、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理、用户装置或用户设备(User Equipment，UE)。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备。
此外，本申请的各个方面或特征可以实现成方法、装置或使用标准编程和/或工程技术的制品。本申请中使用的术语"制品"涵盖可从任何计算机可读器件、载体或介质访问的计算机程序。例如，计算机可读介质可以包括，但不限于:磁存储器件(例如，硬盘、软盘或磁带等)，光盘(例如，压缩盘(Compact Disk，CD)、数字通用盘(Digital Versatile Disk，DVD)等)，智能卡和闪存器件(例如，可擦写可编程只读存储器(Erasable Programmable Read-Only Memory，EPROM)、卡、棒或钥匙驱动器等)。另外，本文描述的各种存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读介质。术语"机器可读介质"可包括但不限于，无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
现在，参照图1，示出根据本文所述的各个实施例的无线通信系统100。无线通信系统100包括基站102，基站102可包括多个天线组。每个天线组可以包括一个或多个天线，例如，一个天线组可包括天线104和106，另一个天线组可包括天线108和110，附加组可包括天线112和114。图1中对于每个天线组示出了2个天线，然而可对于每个组 使用更多或更少的天线。基站102可附加地包括发射机链和接收机链，本领域普通技术人员可以理解，它们均可包括与信号发送和接收相关的多个部件(例如处理器、调制器、复用器、解调器、解复用器或天线等)。
基站102可以与一个或多个接入终端(例如接入终端116和接入终端122)通信。然而，可以理解，基站102可以与类似于接入终端116或122的任意数目的接入终端通信。接入终端116和122可以是例如蜂窝电话、智能电话、便携式电脑、手持通信设备、手持计算设备、卫星无线电装置、全球定位系统、PDA和/或用于在无线通信系统100上通信的任意其它适合设备。如图所示，接入终端116与天线112和114通信，其中天线112和114通过前向链路118向接入终端116发送信息，并通过反向链路120从接入终端116接收信息。此外，接入终端122与天线104和106通信，其中天线104和106通过前向链路124向接入终端122发送信息，并通过反向链路126从接入终端122接收信息。在频分双工(Frequency Division Duplex，FDD)系统中，例如，前向链路118可利用与反向链路120所使用的不同频带，前向链路124可利用与反向链路126所使用的不同频带。此外，在时分双工(Time Division Duplex，TDD)系统中，前向链路118和反向链路120可使用共同频带，前向链路124和反向链路126可使用共同频带。
被设计用于通信的每组天线和/或区域称为基站102的扇区。例如，可将天线组设计为与基站102覆盖区域的扇区中的接入终端通信。在基站102通过前向链路118和124分别与接入终端116和122进行通信的过程中，基站102的发射天线可利用波束成形来改善前向链路118和124的信噪比。此外，与基站通过单个天线向它所有的接入终端发送信号的方式相比，在基站102利用波束成形向相关覆盖区域中随机分散的接入终端116和122发送信号时，相邻小区中的移动设备会受到较少的干扰。
在给定时间，基站102、接入终端116或接入终端122可以是无线通信发送设备和/或无线通信接收设备。当发送数据时，无线通信发送设备可对数据进行编码以用于传输。具体地，无线通信发送设备可获取(例如生成、从其它通信装置接收、或在存储器中保存等)要通过信道发送至无线通信接收设备的一定数目的数据比特。这种数据比特可包含在数据的传输块(或多个传输块)中，传输块可被分段以产生多个码块。
图2是现有技术OFDMA跳频系统的示意图。
图2示出了以1个OFDM符号为跳频时间单元的OFDMA跳频系统。图中横坐标为时间轴，以1个OFDM符号为时间单元；纵坐标为频率轴。其中，若干个子载波组成了跳频信道，一个用户设备在一个OFDM符号表征的跳频时间单元内，采用一个跳频信道进行信号的传输。图中标出了两个用户设备：用户设备1和用户设备2，以用户设备1为例，在相邻的两个OFDM符号单元上，分别采用不同跳频信道进行信号的传输。
现有技术中，相邻两个跳频信道之间没有保护间隔，也就是说，一个跳频信道的最后一个子载波与相邻跳频信道的第一子载波是相邻的两个子载波。
在于拉美地区902-928MHz非授权频段上，根据美国FCC法规，对于跳频系统的信道划分有如下要求：跳频系统的跳频信道以信号的20dB带宽或至少25kHz的信道间隔进行划分，以两者中较大值为准。所以跳频信道的间隔既要大于等于25kHz，又要满足信号的20dB带宽不能超过信道带宽。
因此，跳频信道的带宽必须大于等于信号的20dB带宽，而OFDM系统的带外功率谱密度下降速度较慢，信号会泄漏到信道之外，且信道边界处的功率较大，即使用滤波 或“加窗”处理也很难将带外的功率降到20dB以下。图3和图4是无保护间隔的OFDMA跳频系统的功率谱的示意图，其中，竖线为跳频信道的边界，每个边界对应了OFDM系统中一个跳频信道边缘位置的子载波的中心频率。图3中所示的信号没有经过滤波处理，图4中的信号为经过滤波后的信号功率谱，可以看出，即使经过滤波，信道边界处信号功率仍然没有降到20dB以下。因此，这种没有保护间隔的跳频方案不能满足法规限制。
图5是本申请一个方法的示意性流程图。该方法的执行主体可以为用户设备也可以为网络设备，如图5所示，该方法包括：
步骤410，确定第一跳频信道，其中，第一跳频信道与相邻的第二跳频信道之间存在一个空子载波，该空子载波为不用于承载有用信息的子载波，第一跳频信道包括m个连续子载波，该第二跳频信道包括n个连续子载波，其中，m，n为大于或等于1的整数。
步骤420，在第一跳频信道上传输信息。
具体地，在步骤410中，子载波为频域上承载信号的最小频率单元，每个跳频信道由至少一个子载波组成，因此跳频信道用于承载基站或用户设备发送的有用信息。其中，第一跳频信道可以为系统带宽内的任意一个跳频信道，本申请不作限定。第一跳频信道与相邻的第二跳频信道之间存在一个空子载波，该空子载波的中心频率位置即第一跳频信道与所述第二跳频信道之间的信道边界。
应理解，m与n可以相等，也可以不相等，本申请不作限定，优选地，n＝m＝7。
在步骤420中，应理解，在第一跳频信道或第二跳频信道上传输信息既可以是指用户设备向网络设备的上行数据传输，也可以指网络设备向用户设备的下行数据传输。还应理解，用户设备在不同时域上可以选择在第一跳频信道和/或第二跳频信道上进行信号的传输。
具体地，以用户设备向网络设备上行数据发送信息为例，在同一个时间段内，用户设备1可以在第一跳频信道上进行数据传输，用户设备2可以选择在第二跳频信道上进行数据传输。由于第一跳频信道和第二跳频信道之间具有一个空子载波，因此，可以起到信号隔离的效果。
具体地，如果以网络设备接收用户设备发送的信号时，可能第一跳频信道上和第二跳频信道上可能承载了不同用户设备的信号，第一跳频信道和第二跳频信道之间具有一个空子载波，因此，也可以起到信号隔离的效果。
应理解，对于同一个用户设备来讲，可以在不同的时间段内选择不同的跳频信道进行数据传输。
因此，本申请实施例通过在与相邻的第二跳频信道具有一个空子载波的第一跳频信道上传输信息，能够降低第一跳频信道与第二跳频信道之间信号的干扰。
可选地，作为本申请一个实施例，第一跳频信道、第二跳频信道位于目标频段，目标频段可以为902-928MHz非授权频段的子集，
当25kHz≤min[(m+n)/2]*f≤250kHz时，Q≥49；
当250kHz≤min[(m+n)/2]*f≤500kHz时，Q≥24,其中，Q为所述目标频段上空子载波的数目，f为两个相邻子载波之间的频率间隔，f为正实数。
也就是说，当该方法至少适用于拉美地区902-928MHz非授权频段时，根据美国法规，对于跳频信道的数量有如下限制：若跳频信道带宽小于250kHz,则该跳频系统至少使 用50个跳频信道；若跳频信道的带宽大于等于250kHz，则该跳频系统至少使用25个跳频信道。
其中，(m+n)/2*f指的是第一跳频信道与第二跳频信道的中心频点的距离，min[(m+n)/2]指的是第一跳频信道与第二跳频信道的中心频点的距离的最小值。
因此，本申请实施例的方法，本申请将OFDM跳频系统与相关的法规约束相结合，该方法对OFDM系统的子载波划分规则使得跳频信道之间空一个子载波，既能够降低信道之间的相互干扰，又能够满足法规限制。
可选地，作为本申请一个实施例，将用户设备进行OFDM调制时得到的基带信号的中心频点移到目标频段的空子载波上，其中所述用户设备在第一跳频信道上进行信息传输。应理解，基带信号中心即直流分量(Direct Component，DC)位置，在发送前上变频时，这个位置会有较大噪声，所以这个位置是没法用的，而且这个位置距离其他有用的子载波越远越好，例如，在LTE里基带信号中心距离承载有用信号的子载波只有半个子载波，因此，由于本申请实施例两个相邻信道之间存在一个空子载波，因此通过将用户设备进行OFDM调制时得到的基带信号的中心频点平移到目标频段的空子载波上，也就是将基带DC位置调制在空子载波的中心位置，可以实现基带DC位置距离承载有用信号的子载波之间存在1个子载波间隔的距离。
具体地，以在LTE中为例，上行SC-FDMA基带信号产生时，基带信号偏移半个子载波(公式中为k+1/2)，这样DC对应到两个子载波的中间位置。而本申请实施例中，由于信道之间空了一个子载波，因此在生成SC-FDMA基带信号时，偏移一个子载波(公式中为k+n，n＝1),可以将DC正好对应到空子载波上。这样使得DC与两侧使用的子载波的间隔正好为一个子载波间隔。这样，DC对用到的子载波上的干扰会更小。
Figure PCTCN2017086602-appb-000001
该公式表示天线端口p上，符号l上的时域连续信号
Figure PCTCN2017086602-appb-000002
生成公式。
其中
Figure PCTCN2017086602-appb-000003
为系统使用的子载波总数，
Figure PCTCN2017086602-appb-000004
为向下取整符号，
Figure PCTCN2017086602-appb-000005
为向上取整符号，
Figure PCTCN2017086602-appb-000006
为当前时域符号l上，子载波编号
Figure PCTCN2017086602-appb-000007
举例假设
Figure PCTCN2017086602-appb-000008
则上行有100个子载波，k的取值为
Figure PCTCN2017086602-appb-000009
到
Figure PCTCN2017086602-appb-000010
即-50到49，k(-)的取值范围为0～99。Ts为采样周期，NCP,l为常数，n为正整数。
上面公式的意义是：对于时域符号l，从编号为0的子载波(即第一个子载波，中心频率最低的子载波)开始，每个子载波上的调制内容(承载的信息)为
Figure PCTCN2017086602-appb-000011
(如果该子载波没有用到，其值为0)，在每个子载波上乘以不同的e指数
Figure PCTCN2017086602-appb-000012
(也就是加载频率信息)。最后把每个子载波加载频率后的信号叠加，得到符号l上的基带信号。k表示每个子载波的编号，+n表示调制时每个子载波都向高频移n个子载波，最终效果是基带信号整体向高频移了n个子载波。
例如，在本申请实施例中，当n＝1时，表示调制时将每个子载波都向高频移了1个子载波，最终效果是基带信号整体向高频移了1个子载波。
因此，本申请实施例的方法可以将基带DC位置偏移到空子载波上，减小基带DC对其他子载波的干扰。
可选地，作为本申请一个实施例，上述频率间隔f为下列中的任意一种：
3.75kHz，7.5kHz，15kHz。
图6是本申请一个实施例的方法的示意图。
如图6所示，相邻两个子载波间的子载波间隔为3.75kHz，因此在1.5MHz的带宽上一共有401个子载波，编号分别为[0，1，2，……，400]，其中，编号为8*(i-1)的子载波不用于承载有用信息，称之为空子载波，空子载波作为跳频信道的边界，一个跳频信道的跳频信道边界内包括了7个子载波，用于承载或传递有用信号，此外，编号为0和编号为400的子载波为整个系统带宽的边界，不算跳频信道的边界，因此，共有49个空子载波。
如图6所示，子载波间隔为3.75kHz，每隔7个连续子载波，就会有一个空子载波，空子载波的个数不少于49。
图7是本申请另一实施例的方法的示意图。
如图7所示，在LTE系统中，以15kHz为子载波间隔，一共12个跳频信道，每一个子载波就空一个子载波作为跳频信道的边界，每个跳频信道内包括一个子载波。具体地，图中实线为使用的子载波，虚线为空子载波。这样在生成基带信号时，偏移一个子载波可以将基带的DC移到空子载波上。
图8是本申请一个实施例的用户设备的示意性框图。如图8所示，该用户设备700应用于正交频分复用OFDM跳频系统中，包括：
确定单元710，所述确定单元710用于确定第一跳频信道，其中，所述第一跳频信道与相邻的第二跳频信道之间存在一个空子载波，所述空子载波为不用于承载有用信息的子载波，所述第一跳频信道包括m个连续子载波，所述第二跳频信道包括n个连续子载波，其中，m，n为大于或等于1的整数；
发送单元720，所述发送单元720用于在所述第一跳频信道上发送信息。
可选地，作为本申请一个实施例，所述第一跳频信道、所述第二跳频信道位于目标频段，所述目标频段可以为902-928MHz非授权频段的子集，
当25kHz≤(m+n)/2*f≤250kHz时，Q≥49；
当250kHz≤(m+n)/2*f≤500kHz时，Q≥24，其中，Q为所述目标频段上空子载波的数目，f为两个相邻子载波之间的频率间隔，f为正实数，单位为kHz。
可选地，作为本申请一个实施例，所述确定单元710还用于：
将所述用户设备进行OFDM调制时得到的基带信号的中心频点移到目标频段的空子载波上。
可选地，作为本申请一个实施例，所述频率间隔f为下列中的任意一种：
3.75kHz，7.5kHz，15kHz。
因此，本申请实施例通过在具有一个空子载波的第一跳频信道和/或第二跳频传输信息，能够降低第一跳频信道与第二跳频信道之间信号的干扰。
图9是本申请另一实施例的网络设备800的示意性框图。该网络设备800应用于正交频分复用OFDM跳频系统，包括：
确定单元810，所述确定单元810用于确定位于目标频段的第一跳频信道和第二跳频信道，其中，所述第一跳频信道与相邻的第二跳频信道之间存在一个空子载波，所述空子载波为不用于承载有用信息的子载波，所述第一跳频信道包括m个连续子载波，所述第二跳频信道包括n个连续子载波，其中，m，n为大于或等于1的整数；
接收单元810，所述接收单元820用于在所述目标频段上接收信息。
可选地，作为本申请一个实施例，所述目标频段为902-928MHz非授权频段的子集，
当25kHz≤(m+n)/2*f≤250kHz时，Q≥49；
当250kHz≤(m+n)/2*f≤500kHz时，Q≥24，其中，Q为所述目标频段上空子载波的数目，f为两个相邻子载波之间的频率间隔，f为正实数，单位为kHz。
可选地，作为本申请一个实施例，所述频率间隔f为下列中的任意一种：
3.75kHz，7.5kHz，15kHz。
因此，本申请实施例通过在具有一个空子载波的第一跳频信道和/或第二跳频传输信息，能够降低第一跳频信道与第二跳频信道之间信号的干扰。
图10是本申请一个实施例的装置的示意性框图。如图10所示，该装置900包括处理器910、收发器920和存储器930。其中，处理器910、收发器920和存储器930通过总线系统相连，该存储器930用于存储指令，该处理器910用于执行该存储器930存储的指令，以控制该收发器920发送信号和接收信号。
存储器930可以包括只读存储器和随机存取存储器，并向处理器910提供指令和数据。发送装置900的各个组件通过总线系统耦合在一起。例如，发送装置900可以为图1中示出的基站102。发送装置900能够实现前述方法实施例中的相应流程，为避免重复，这里不再赘述。
应理解，在本申请实施例中，该处理器910可以是中央处理单元(Central Processing Unit，简称为“CPU”)，该处理器910还可以是其他通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现成可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
存储器930可以包括只读存储器和随机存取存储器，并向处理器11提供指令和数据。存储器930的一部分还可以包括非易失性随机存取存储器。例如，存储器930还可以存储设备类型的信息。
在实现过程中，上述方法的各步骤可以通过处理器910中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器930，处理器910读取存储器930中的信息，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
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中描述的各方法步骤和单元，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各实施例的步骤及组成。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。本领域普通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申请的范围。
结合本文中所公开的实施例描述的方法或步骤可以用硬件、处理器执行的软件程序，或者二者的结合来实施。软件程序可以置于随机存储器(RAM)、内存、只读存储器(ROM)、电可编程ROM、电可擦除可编程ROM、寄存器、硬盘、可移动磁盘、CD-ROM、 或技术领域内所公知的任意其它形式的存储介质中。
尽管通过参考附图并结合优选实施例的方式对本申请进行了详细描述，但本申请并不限于此。在不脱离本申请的精神和实质的前提下，本领域普通技术人员可以对本申请的实施例进行各种等效的修改或替换，而这些修改或替换都应在本申请的涵盖范围内。

Claims (11)

  1. 一种传输信息的方法，该方法应用于正交频分复用OFDM跳频系统，其特征在于，包括：
    确定第一跳频信道，其中，所述第一跳频信道与相邻的第二跳频信道之间存在一个空子载波，所述空子载波为不用于承载有用信息的子载波，所述第一跳频信道包括m个连续子载波，所述第二跳频信道包括n个连续子载波，其中，m，n为大于或等于1的整数；
    在所述第一跳频信道上传输信息。
  2. 根据权利要求1所述的方法，其特征在于，所述第一跳频信道、所述第二跳频信道位于目标频段，当25kHz≤(m+n)/2*f≤250kHz时，Q≥49；
    当250kHz≤(m+n)/2*f≤500kHz时，Q≥24，其中，Q为所述目标频段上空子载波的数目，f为两个相邻子载波之间的频率间隔，f为正实数，单位为kHz。
  3. 根据权利要求1或2所述的方法，其特征在于，所述方法包括：
    将进行OFDM调制时得到的基带信号的中心频点移到目标频段的空子载波上，其中所述用户设备在第一跳频信道上进行信息传输。
  4. 根据权利要求2所述的方法，其特征在于，所述频率间隔f为下列中的任意一种：
    3.75kHz，7.5kHz，15kHz。
  5. 一种用户设备，其特征在于，所述用户设备应用于正交频分复用OFDM跳频系统中，其特征在于，包括：
    确定单元，所述确定单元用于确定第一跳频信道，其中，所述第一跳频信道与相邻的第二跳频信道之间存在一个空子载波，所述空子载波为不用于承载有用信息的子载波，所述第一跳频信道包括m个连续子载波，所述第二跳频信道包括n个连续子载波，其中，m，n为大于或等于1的整数；
    发送单元，所述发送单元用于在所述第一跳频信道上发送信息。
  6. 根据权利要求5所述的用户设备，其特征在于，所述第一跳频信道、所述第二跳频信道位于目标频段，
    当25kHz≤(m+n)/2*f≤250kHz时，Q≥49；
    当250kHz≤(m+n)/2*f≤500kHz时，Q≥24，其中，Q为所述目标频段上空子载波的数目，f为两个相邻子载波之间的频率间隔，f为正实数，单位为kHz。
  7. 根据权利要求5或6所述的用户设备，其特征在于，所述确定单元还用于：
    将所述用户设备进行OFDM调制时得到的基带信号的中心频点移到目标频段的空子载波上。
  8. 根据权利要求6所述的用户设备，其特征在于，所述频率间隔f为下列中的任意一种：
    3.75kHz，7.5kHz，15kHz。
  9. 一种网络设备，其特征在于，该网络设备应用于正交频分复用OFDM跳频系统，包括：
    确定单元，所述确定单元用于确定位于目标频段的第一跳频信道和第二跳频信道，其中，所述第一跳频信道与相邻的第二跳频信道之间存在一个空子载波，所述空子载波为不用于承载有用信息的子载波，所述第一跳频信道包括m个连续子载波，所述第二跳 频信道包括n个连续子载波，其中，m，n为大于或等于1的整数；
    接收单元，所述接收单元用于在所述目标频段上接收信息。
  10. 根据权利要求9所述的网络设备，其特征在于，所述目标频段为902-928MHz非授权频段的子集，
    当25kHz≤(m+n)/2*f≤250kHz时，Q≥49；
    当250kHz≤(m+n)/2*f≤500kHz时，Q≥24，其中，Q为所述目标频段上空子载波的数目，f为两个相邻子载波之间的频率间隔，f为正实数，单位为kHz。
  11. 根据权利要求10所述的网络设备，其特征在于，所述频率间隔f为下列中的任意一种：
    3.75kHz，7.5kHz，15kHz。
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