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WO2017101821A1 - 一种数据符号传输方法及无线网络设备 - Google Patents

一种数据符号传输方法及无线网络设备 Download PDF

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Publication number
WO2017101821A1
WO2017101821A1 PCT/CN2016/110186 CN2016110186W WO2017101821A1 WO 2017101821 A1 WO2017101821 A1 WO 2017101821A1 CN 2016110186 W CN2016110186 W CN 2016110186W WO 2017101821 A1 WO2017101821 A1 WO 2017101821A1
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WO
WIPO (PCT)
Prior art keywords
length
guard band
network device
wireless network
symbol
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2016/110186
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English (en)
French (fr)
Inventor
任海豹
曲秉玉
李元杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP16874878.8A priority Critical patent/EP3382967B1/en
Publication of WO2017101821A1 publication Critical patent/WO2017101821A1/zh
Priority to US16/009,204 priority patent/US10693690B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03343—Arrangements at the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • 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
    • H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • H04L27/2607—Cyclic extensions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40052—High-speed IEEE 1394 serial bus
    • H04L12/40071—Packet processing; Packet format
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
    • H04L2025/03535—Variable structures
    • H04L2025/03547—Switching between time domain structures
    • H04L2025/0356—Switching the time direction of equalisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03159—Arrangements for removing intersymbol interference operating in the frequency domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H04L51/06—Message adaptation to terminal or network requirements
    • H04L51/063—Content adaptation, e.g. replacement of unsuitable content
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H04L51/06—Message adaptation to terminal or network requirements
    • H04L51/066—Format adaptation, e.g. format conversion or compression
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a data symbol transmission method and a wireless network device.
  • the receiver when receiving data, the receiver generally performs frequency domain equalization to combat channel frequency domain selective fading due to multipath.
  • frequency domain equalization the receiver must ensure that the received previous symbol has no intersymbol interference with the latter symbol. This requires a guard band to be reserved in front of each symbol to resist intersymbol interference of the previous symbol.
  • Common protection band design methods include a cyclic prefix ("CP") method, a zero prefix (“ZP”) method, and a Zero Tail (ZT) method.
  • CP cyclic prefix
  • ZP zero prefix
  • ZT Zero Tail
  • beamforming beamforming, referred to as "BF" can be performed through multiple antennas to increase the coverage of the base station, including the digital beam.
  • DBF digital beamforming
  • ABSF analog beamforming
  • HBF hybrid beamforming
  • Embodiments of the present invention provide a data symbol transmission method and a wireless network device, which can improve resources. Utilization, increase system capacity.
  • an embodiment of the present invention provides a wireless network device, including: an information determining unit, a configuration unit, and a sending unit;
  • An information determining unit configured to determine a location in the current subframe that requires hardware switching, and a switching time of the hardware switching
  • a configuration unit configured to configure, according to the switching time, a first protection band for the first data symbol corresponding to the location, where a length of the first protection band is greater than or equal to the switching time;
  • the configuration unit is further configured to use a data symbol other than the first data symbol in the subframe as a second data symbol, and configure a second guard band for the second data symbol;
  • a sending unit configured to send the subframe to another wireless network device.
  • the wireless network device may be a base station or a user equipment; another wireless network device may be a user equipment or a base station.
  • the communication involved in the embodiment of the present invention may be between a base station and a user equipment, or between a base station and a base station, such as between a macro base station and a small base station, and may also be a user equipment and a user equipment. Between, for example, communication in a D2D network.
  • the first protection band may include a zero insertion prefix ZP or a zero insertion suffix ZT, and the second protection band may be a cyclic prefix CP.
  • the sending unit is specifically configured to:
  • the wireless network device further includes:
  • a comparing unit configured to compare a length of the first guard band with a length of the second guard band, wherein a length of the second guard band is pre-configured
  • the configuration unit is further configured to configure, when the comparison result of the comparison unit is that the length of the first protection band is smaller than the length of the second protection band, configure the length of the first protection band to be The second guard band has the same length.
  • the wireless network device further includes:
  • a comparing unit configured to compare a length of the first guard band with a length of the second guard band and a length of a second symbol, where the second symbol includes the second data symbol and the second Guarantee Guard belt
  • a determining unit configured to determine whether the system in which the subframe is located is a single carrier system
  • the configuration unit is further configured to: determine, by the determining unit, that the system in which the subframe is located is a single carrier system, and the comparison result of the comparing unit is that the length of the first guard band is greater than the second protection a length of the strip, and when a length of the first guard band is less than a length of the second symbol, a difference between a length of the second symbol and a length of the first guard band is used as the first data symbol The length of the data that needs to be transferred.
  • the wireless network device further includes:
  • a comparing unit configured to compare a length of the first guard band with a length of the second guard band and a length of a second symbol, where the second symbol includes the second data symbol and the second Protective tape
  • a determining unit configured to determine whether the system in which the subframe is located is a single carrier system
  • a mapping unit configured to determine, in the determining unit, that the system in which the subframe is located is not a single carrier system, and a comparison result of the comparison unit is that a length of the first guard band is greater than a length of the second guard band And when a length of the first guard band is less than a length of the second symbol, calculating a difference between a length of the first guard band and a length of the second guard band, according to the difference and the The length of the second data symbol determines the number of subcarriers that need to be separated, and performs frequency domain distributed resource mapping according to the number of the subcarriers;
  • the configuration unit is further configured to use a difference between a length of the second symbol and a length of the first guard band as a length of the first data symbol, and use a target length in the first data symbol as The length of data to be transmitted, wherein the target length is a quotient of the length of the second data symbol plus one of the number of subcarriers.
  • the distributed resource mapping refers to performing data mapping of one sub-carrier at a certain interval sub-carrier (that is, the number of sub-carriers mentioned above), and does not send the sub-carrier corresponding to the number of sub-carriers of the interval sub-carrier. Data or zero-fill.
  • the specific manner of determining, by the mapping unit, the number of subcarriers to be separated according to the difference and the length of the second data symbol is: a quotient of the difference between the difference and the length of the second data symbol (k-1)/k, k/(k+1) for comparison; if the quotient is less than or equal to (k-1)/k, determining that the number of subcarriers required to be spaced is k-1; If the quotient is greater than (k-1) and less than k/(k+1), then the need is determined.
  • the number of separated subcarriers is k. Where k is an integer greater than or equal to 2.
  • the sending unit is further configured to send a notification message to the another wireless network device, where the notification message is used to notify configuration information of the subframe of the another wireless network device,
  • the configuration information includes one or more of location information of the first data symbol, location information of the first guard band, and length information of the first guard band.
  • the notification message may be that the wireless network device sends to the another wireless network device by using a broadcast channel or a control channel.
  • the notification message includes, but is not limited to, a synchronization channel, a physical broadcast message, a system broadcast message indicated by a physical common control channel, and the like.
  • the location information of the first data symbol, the location information of the first guard band, and the length information of the first guard band are determined in advance with the other wireless network device.
  • an embodiment of the present invention provides a wireless network device, including: a receiving unit and a processing unit;
  • a receiving unit configured to receive a subframe sent by another wireless network device, where the subframe includes a first symbol configured with a first guard band and a second symbol configured with a second guard band;
  • a processing unit configured to perform frequency domain equalization on the first symbol by using a frequency domain equalization technology corresponding to the first protection band, and adopting a frequency domain equalization technology corresponding to the second protection band to the pair
  • the second symbol performs frequency domain equalization.
  • the wireless network device may be a user equipment or a base station; another wireless network device may be a base station or a user equipment.
  • the first symbol further includes a first data symbol
  • the second symbol further includes a second data symbol
  • the first data symbol and the second data symbol include data to be transmitted.
  • the first protection band may include a zero insertion prefix ZP or a zero insertion suffix ZT
  • the second protection band may be a cyclic prefix CP.
  • the processing unit performs frequency domain equalization on the first symbol by using a frequency domain equalization technology corresponding to the first protection band:
  • frequency domain equalization is performed on the first symbol by using a frequency domain equalization technology corresponding to the first protection band;
  • frequency domain equalization is performed on the first symbol by using a frequency domain equalization technique corresponding to the second guard band.
  • the receiving unit is further configured to receive, by the another wireless network device, a notification message that includes configuration information of the subframe, and receive the subframe according to the configuration information, where
  • the configuration information includes one or more of location information of the first data symbol, location information of the first guard band, and length information of the first guard band.
  • the location information of the first data symbol, the location information of the first guard band, and the length information of the first guard band are determined in advance with the other wireless network device.
  • an embodiment of the present invention provides a data symbol transmission method, which is applied to a wireless network device, and includes:
  • the subframe is transmitted to another wireless network device.
  • the first protection band may include a zero insertion prefix ZP or a zero insertion suffix ZT, and the second protection band may be a cyclic prefix CP.
  • the transmitting the subframe to another wireless network device comprises:
  • the method before the transmitting the subframe to another wireless network device, the method further includes:
  • the length of the first guard band is less than the length of the second guard band, the length of the first guard band is configured to be the same as the length of the second guard band.
  • the method before the transmitting the subframe to another wireless network device, the method further includes:
  • the length of the first guard band is greater than the length of the second guard band, and the length of the first guard band is less than the length of the second symbol, And the difference between the length of the second symbol and the length of the first guard band is used as the length of data to be transmitted in the first data symbol.
  • the method before the transmitting the subframe to another wireless network device, the method further includes:
  • the system in which the subframe is located is not a single carrier system, and the length of the first guard band is greater than the length of the second guard band, and the length of the first guard band is less than the length of the second symbol And calculating a difference between the length of the first guard band and the length of the second guard band, determining the number of subcarriers to be separated according to the difference and the length of the second data symbol, and according to the The number of subcarriers is subjected to frequency domain distributed resource mapping, so that the another wireless network device demodulates the first data symbol;
  • the target length is a quotient of the length of the second data symbol plus the number of the subcarriers plus one.
  • the distributed resource mapping refers to performing data mapping of one sub-carrier at a certain interval sub-carrier (that is, the number of sub-carriers mentioned above), and does not send the sub-carrier corresponding to the number of sub-carriers of the interval sub-carrier. Data or zero-fill.
  • the specific manner of determining the number of subcarriers to be separated according to the difference and the length of the second data symbol is: a quotient of the difference between the difference and the length of the second data symbol (k-1)/k, k/(k+1) for comparison; if the quotient is less than or equal to (k-1)/k, determining that the number of subcarriers required to be spaced is k-1; If the quotient is greater than (k-1) and less than k/(k+1), it is determined that the number of subcarriers required to be spaced is k. Where k is an integer greater than or equal to 2.
  • the method further includes:
  • the notification message may be that the wireless network device sends to the another wireless network device by using a broadcast channel or a control channel.
  • the notification message includes, but is not limited to, a synchronization channel, a physical broadcast message, a system broadcast message indicated by a physical common control channel, and the like.
  • the location information of the first data symbol, the location information of the first guard band, and the length information of the first guard band are determined in advance with the other wireless network device.
  • the embodiment of the present invention further provides a data symbol transmission method, which is applied to a wireless network device, and includes:
  • the first symbol further includes a first data symbol
  • the second symbol further includes a second data symbol
  • the first data symbol and the second data symbol include data to be transmitted.
  • the first protection band may include a zero insertion prefix ZP or a zero insertion suffix ZT
  • the second protection band may be a cyclic prefix CP.
  • the frequency domain equalization of the first symbol is performed by using a frequency domain equalization technique corresponding to the first guard band, including:
  • frequency domain equalization is performed on the first symbol by using a frequency domain equalization technique corresponding to the second guard band.
  • the method further includes:
  • a notification message including configuration information of the subframe, and receiving the subframe according to the configuration information, where the configuration information includes location information of the first data symbol And one or more of position information of the first guard band and length information of the first guard band.
  • the location information of the first data symbol, the location information of the first guard band, and the length information of the first guard band are determined in advance with the other wireless network device.
  • an embodiment of the present invention provides a data symbol transmission system, including: a first wireless network device and a second wireless network device;
  • the first wireless network device is configured to determine a location in the current subframe that requires hardware switching and a handover time of the hardware handover; and configure a first protection band according to the switching time as a first data symbol corresponding to the location
  • the length of the first guard band is greater than or equal to the switching time; the data symbol except the first data symbol in the subframe is used as the second data symbol, and the second data symbol is configured for the second data symbol.
  • a second guard band transmitting the subframe to the second wireless network device;
  • the second wireless network device is configured to receive a subframe that is sent by the first wireless network device, where the subframe includes a first symbol configured with a first protection band and a second symbol configured with a second protection band;
  • the frequency domain equalization technique corresponding to the first guard band performs frequency domain equalization on the first symbol, and performs frequency domain equalization on the second symbol by using a frequency domain equalization technique corresponding to the second guard band.
  • the first wireless network device may be a base station or a user equipment.
  • the second wireless network device may be a user equipment or a base station.
  • the communication involved in the embodiment of the present invention may be between a base station and a user equipment, or between a base station and a base station, such as between a macro base station and a small base station, and may also be a user equipment and a user equipment. Between, for example, communication in a D2D network.
  • the first symbol includes a first guard band and a first data symbol
  • the second symbol further includes a second guard band and a second data symbol
  • the first data symbol and the second data symbol include The data to be transferred.
  • the first protection band may include a zero insertion prefix ZP or a zero insertion suffix ZT
  • the second protection band may be a cyclic prefix CP.
  • the second wireless network device performs frequency domain equalization on the first symbol by using a frequency domain equalization technology corresponding to the first protection band, and may specifically be: the second wireless network device Determining whether the carrier system in which the subframe is located is a single carrier system; if it is a single carrier system, the second wireless network device adopts a frequency domain equalization technology corresponding to the first protection band to the first symbol Performing frequency domain equalization; if not a single carrier system, the second wireless network device performs frequency domain equalization on the first symbol by using a frequency domain equalization technology corresponding to the second guard band.
  • system further comprises:
  • the first wireless network device Transmitting, by the first wireless network device, a notification message including configuration information of the subframe to the second wireless network device, where the configuration information includes location information of the first data symbol, the first protection One or more of position information of the belt and length information of the first guard band;
  • the second wireless network device receives a notification message including configuration information of the subframe, and receives the subframe according to the configuration information.
  • the location information of the first data symbol, the location information of the first guard band, and the length information of the first guard band may also be the first wireless network device and the second The wireless network device is pre-negotiated and determined.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores a program, and the program includes some or all of the steps of the data symbol transmission method of the third aspect.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores a program, and the program includes some or all of the steps of the data symbol transmission method of the fourth aspect.
  • an embodiment of the present invention provides a wireless network device, including: a communication interface, a memory, and a processor, where the processor is respectively connected to the communication interface and the memory;
  • the memory is used to store driver software
  • the processor reads the driver software from the memory and performs some or all of the steps of the data symbol transmission method of the third aspect described above by the driver software.
  • the wireless network device is a base station, or a user equipment.
  • an embodiment of the present invention provides a wireless network device, including: a communication interface, a memory, and a processor, where the processor is respectively connected to the communication interface and the memory;
  • the memory is used to store driver software
  • the processor reads the driver software from the memory and performs some or all of the steps of the data symbol transmission method of the fourth aspect described above by the driver software.
  • the wireless network device is a base station, or a user equipment.
  • the wireless network device can dynamically configure the guard band of the symbol of the local cell according to the location of the hardware handover and the required handover time, and perform special processing on the transmitted symbol at the hardware switching position without setting an extra
  • the GP which reduces the air interface reservation overhead required for the hardware switching location, effectively improves the air interface resource utilization, increases the available air interface resources, and improves the system capacity.
  • different cells can implement adaptive configuration of the guard band, which reduces the complexity of the unified design frame structure.
  • FIG. 1 is a frame structure diagram of a beam switching in the prior art
  • FIG. 2 is a structural diagram of a communication system according to an embodiment of the present invention.
  • 3a is a schematic structural diagram of a base station in the communication system shown in FIG. 2;
  • FIG. 3b is a schematic structural diagram of a user equipment in the communication system shown in FIG. 2;
  • FIG. 3b is a schematic structural diagram of a user equipment in the communication system shown in FIG. 2;
  • FIG. 4 is a schematic diagram of a hybrid beamforming structure according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a wireless network device according to an embodiment of the present disclosure.
  • FIG. 6 is a structural diagram of a subframe according to an embodiment of the present invention.
  • FIG. 6b is a hardware switching scenario diagram according to an embodiment of the present invention.
  • FIG. 6c is another hardware switching scenario diagram provided by an embodiment of the present invention.
  • FIG. 6 is a further hardware switching scenario diagram provided by an embodiment of the present invention.
  • FIG. 6e is a schematic diagram of a frequency domain distributed mapping according to an embodiment of the present invention.
  • FIG. 7 is a structural diagram of another seed frame according to an embodiment of the present invention.
  • FIG. 7b is still another hardware switching scenario diagram provided by an embodiment of the present invention.
  • FIG. 7c is still another hardware switching scenario diagram provided by an embodiment of the present invention.
  • FIG. 7d is still another hardware switching scenario diagram provided by an embodiment of the present invention.
  • FIG. 8 is a schematic flowchart of a data symbol transmission method according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a data symbol transmission system according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of another wireless network device according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of still another wireless network device according to an embodiment of the present invention.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access wireless
  • GPRS general packet radio service
  • LTE long term evolution Evolution
  • future networks such as 5G, D2D (device to device) networks, M2M (machine to machine) networks, and so on.
  • the embodiment of the present invention is described in connection with a wireless network device, where the wireless network device may be a base station or a user equipment.
  • the communication involved in the embodiment of the present invention may be between a base station and a user equipment, or between a base station and a base station, such as between a macro base station and a small base station, and may also be a user equipment and a user equipment.
  • communication in a D2D network may be a D2D network.
  • a user equipment may also be called a terminal, a mobile station (“MS”) or a mobile terminal. It can communicate with one or more core networks via a radio access network (eg, RAN, radio access network), which can be a mobile terminal, such as a mobile phone (or “cellular” phone) and a computer with a mobile terminal It can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges language and/or data with the wireless access network.
  • a radio access network eg, RAN, radio access network
  • RAN radio access network
  • the base station may be a base station in GSM or CDMA, such as a base transceiver station ("BTS"), or a base station in WCDMA, such as a NodeB, or an evolved type in LTE.
  • the base station such as an eNB or an e-NodeB (evolutional Node B), or a base station in a future network, is not limited in the embodiment of the present invention.
  • FIG. 2 is a structural diagram of a communication system according to an embodiment of the present invention.
  • the communication system includes a base station and at least one user equipment (only user equipment 1, user equipment 2, and user equipment 3 are shown in the figure), and the base station and the user equipment perform wireless signals.
  • Communication the wireless signal consisting of a sub-frame comprising a plurality of symbols, which can be used as a basic unit of a wireless signal.
  • the wireless signal commonly used for communication is transmitted and received in a certain modulation manner, and can be classified into single carrier modulation (such as time division multiple access, code division multiple access) and multi-carrier modulation (such as frequency) according to the modulation method of the wireless signal.
  • single carrier modulation such as time division multiple access, code division multiple access
  • multi-carrier modulation such as frequency
  • the communication system may further include neighboring base stations and user equipments that transmit services on the same time-frequency resource except the base station, and each of the base stations may include other numbers of user equipments in the coverage.
  • the wireless communication system in which the base station and the user equipment are located in FIG. 2 may further include other network entities, such as a mobility management entity, which are not limited in the embodiment of the present invention.
  • FIG. 3a is a schematic structural diagram of a base station in the communication system shown in FIG. 2, and FIG. 3b is a structure of a user equipment in the communication system shown in FIG. schematic diagram.
  • the base station may include an antenna array, a duplexer, a transmitter (referred to as "TX”), and a receiver (receiver, referred to as "RX”) (TX and RX may be collectively referred to as a transceiver TRX).
  • TX and RX may be collectively referred to as a transceiver TRX
  • the duplexer is used to implement an antenna array, which can be used for both transmitting signals and receiving signals.
  • TX is used to convert between RF signal and baseband signal.
  • TX can include power amplifier (referred to as "PA”), digital to analog converter (“DAC”) and inverter.
  • PA power amplifier
  • DAC digital to analog converter
  • the RX may include a low noise amplifier (“LNA”), an analog to digital converter (“ADC”), and a frequency converter.
  • LNA low noise amplifier
  • ADC analog to digital converter
  • the baseband processing section is used to implement processing of transmitted or received signals, such as layer mapping, precoding, modulation/demodulation, encoding/compiling, etc., and for physical control channels, physical data channels, physical broadcast channels, reference signals, and the like. Separate processing.
  • the base station may further include a control part, configured to perform multi-user scheduling and resource allocation, pilot scheduling, user physical layer parameter configuration, and the like.
  • FIG. 3b is a schematic structural diagram of a user equipment in the communication system shown in FIG. 2.
  • User equipment may include an antenna, a duplexer, TX and RX (TX and RX may be collectively referred to as transceiver TRX), and a baseband processing portion.
  • the user equipment has a single antenna. It should be understood that the user equipment may also have multiple antennas (ie, antenna arrays).
  • the duplexer enables the antenna array to be used for both transmitting signals and receiving signals.
  • TX is used to convert between RF signal and baseband signal.
  • TX can include PA, DAC and inverter.
  • the UE side is battery-powered, which is more sensitive to PA power amplifier efficiency.
  • RX can include LNA, ADC and Inverter.
  • the baseband processing section is used to implement processing of transmitted or received signals, such as layer mapping, precoding, modulation/demodulation, encoding/decoding, etc., and for physical control channels, physical data channels, physical broadcast channels, reference signals Wait for separate processing.
  • the user equipment may further include a control part, configured to request an uplink physical resource, calculate channel state information (CSI) corresponding to the downlink channel, and determine whether the downlink data packet is successfully received.
  • CSI channel state information
  • FIG. 4 is a schematic diagram of a hybrid beamforming structure according to an embodiment of the present invention, which may be specifically configured in a wireless network device.
  • the baseband processing section performs general baseband digital signal processing, including one or more of CRC check, encoding, modulation, scrambling, and digital beamforming; and baseband processed digital signal feed.
  • a radio frequency (Radio Frequency, referred to as "RF") link (only two RF links are shown in the figure. In practical applications, one or more RF links may be included), and the radio link is transmitted to perform upsampling and transmission. Forming filtering, clipping, analog to digital conversion, etc.; the RF processed analog signal is sent to multiple power amplifiers, phase shifters, and antenna units for analog beamforming; the baseband processing section controls RF shifting.
  • the phase of the phaser can realize the transmission of a signal with a certain directivity.
  • the directivity refers to the directivity of electromagnetic wave energy, and the signal with directivity synthesized by a plurality of analog phase shifters is called an analog beam.
  • the RF phase shifter is generally implemented by a delay line or a PIN diode. It takes a certain time to adjust the phase. Therefore, when designing the communication protocol, the influence of the beam switching time needs to be considered. Therefore, assuming that the beams currently used by the wireless network device, such as the base station, are beam 1 and beam 6, respectively, when performing analog beam switching, the beam 1 can be switched to any of the beams 2-4, and the beam 6 is switched to the beam. Any of 5, 7, and 8.
  • the baseband processing portion corresponds to the baseband processing module of FIG. 3a, and the RF, power amplifier, and phase shifter may be disposed in the transmitter in FIG. 3a, and each RF link corresponds to a group of beams.
  • the system does not need to perform hardware switching in all symbols.
  • one or several hardware switches exist in each subframe or each radio frame (in the case of an LTE system, one radio frame includes 10 subframes). s position.
  • different base station cells may correspond to different hardware switching time points. For example, since the hardware parameters and configurations of different base stations may be different, the time for hardware handover by different base stations is different; different base stations may be configured with different antenna numbers and cover different ranges, which may make the number of beams in different base stations possible. The difference is that the number of hardware switches and the switching position are different. Therefore, each base station can independently perform protection band configuration on data symbols that need to be transmitted.
  • the embodiment of the invention discloses a data symbol transmission method, a wireless network device and a system, which can improve resource utilization and increase system capacity. The details are explained below.
  • FIG. 5 is a schematic structural diagram of a wireless network device according to an embodiment of the present invention.
  • the wireless network device in the embodiment of the present invention may include an information determining unit 11, a configuration unit 12, and a sending unit 13. among them,
  • the information determining unit 11 is configured to determine a location in the current subframe that requires hardware switching and a switching time of the hardware handover.
  • the wireless network device in the embodiment of the present invention corresponds to the foregoing wireless network device.
  • the communication between the base station and the user equipment is taken as an example, that is, the wireless network device is a base station.
  • the communication between the base station and the user equipment may be based on a subframe including a plurality of symbols.
  • the information determining unit 11 can detect whether hardware switching, such as analog beam switching, is required. If hardware switching is required, the base station can further determine. The location of the hardware switch in the subframe, and the time required to determine the hardware switch, that is, the switch time, to select and configure the data symbol guard band based on the switch time.
  • the configuration unit 12 is configured to configure a first protection band according to the switching time as a first data symbol corresponding to the location, where a length of the first protection band is greater than or equal to the switching time.
  • the configuration unit 12 may configure the first protection band for the first data symbol corresponding to the location according to the switching time, for example, The guard band of the data symbol at the switching position, that is, the first guard band, is configured as a guard band having a length not lower than the switching time.
  • the first protection band may include a Zero Period ("ZP” for short) or a Zero Tail (“ZT” for short).
  • ZP Zero Period
  • ZT Zero Tail
  • the configuration unit 12 is further configured to use a data symbol other than the first data symbol in the subframe as a second data symbol, and configure a second guard band for the second data symbol.
  • the configuration unit 12 may also configure a second guard band, such as a cyclic prefix CP, for the second data symbol.
  • a second guard band such as a cyclic prefix CP
  • the sending unit 13 is configured to send the subframe to another wireless network device.
  • the communication between the base station and the user equipment is taken as an example, that is, the other wireless network device is a user equipment.
  • the sending unit 13 may be specifically configured to:
  • the sending unit 13 is further configured to send, to the another wireless network device, a notification message, where the notification message is used to notify configuration information of the subframe of the another wireless network device, where the configuration information includes the One or more of position information of the first data symbol, position information of the first guard band, and length information of the first guard band.
  • the notification message may be sent by the base station to the user equipment by using a broadcast channel or a control channel, so that the user equipment receives a notification message including configuration information of the subframe. And receiving the subframe according to the configuration information.
  • the notification message is a message that all users in the base station cell can receive, including but not limited to a synchronization channel, a physical broadcast message, a system broadcast message indicated by a physical common control channel, and the like.
  • the sending unit 13 may specifically send the notification message to the user equipment after the information determining unit 11 determines the location of the hardware switching in the current subframe and the switching time; or the sending unit 13 may configure the first for the subframe configuration unit 12 After the guard band and the second guard band complete the guard band configuration of the subframe, the notification message is sent to the user equipment; or the sending unit 13 may further determine the location and switching time of the hardware switch in the current subframe in the information determining unit 11, respectively. And then sending, to the user equipment, a notification message that includes the location information of the first data symbol that needs to perform hardware switching, and after the configuration unit 12 completes the guard band configuration of the subframe, sends the location and length including the first protection band to the user equipment, and the like.
  • the notification message of the information, and the like are not limited in the embodiment of the present invention.
  • the location information of the first data symbol, the location information of the first guard band, and the length information of the first guard band may also be determined by the base station and the user equipment in advance.
  • the base station and the user equipment may determine the location and length information of the first data symbol and the first guard band according to a preset negotiation algorithm; or the location and length information is pre-configured in the base station and the user equipment.
  • the base station is configured to perform guard band configuration and transmission based on the location and length information, that is, a first guard band of a negotiated length is configured for the first data symbol at the negotiated location, and a second protection is configured for the remaining symbols of the subframe, that is, the second data symbol.
  • the user equipment performs data reception based on the location and length information, that is, receives the first data symbol and the first guard band at the negotiated location, and receives the second data symbol and the second guard band of the remaining positions of the subframe.
  • the data symbol and its corresponding guard band may be collectively referred to as a symbol, that is, the first data symbol and the first guard band may serve as a first symbol, and the second data symbol and the second guard band may serve as a second symbol.
  • the first symbol is the same length as the second symbol
  • the second data symbols in the subframe are the same length.
  • the transmitting unit 13 first transmits a ZP, that is, a first guard band, and then transmits a data portion, that is, a first data symbol, for the first symbol of the ZP.
  • the data is sent first. Part, then send ZT.
  • the ZP equalization method is used for frequency domain equalization.
  • the CP equalization method is used for frequency domain equalization, thereby improving system equalization performance.
  • the CP can be directly discarded and only the data part is processed; when the frequency domain equalization is performed by the ZP (or ZT) equalization method, the ZP (or ZT) cannot be directly discarded. Need To superimpose the part of the symbol ZP (or ZT) into the preceding symbol to form a cyclic symbol, the linear convolution system is changed into a circular convolution system to achieve frequency domain equalization, which will not be described here.
  • the length between symbols may be different. Since the length of the subframe is configured to be a fixed length, after the configuration unit 12 completes the configuration of the first guard band and the configuration of the second guard band, the subframe after the guard band configuration is further detected (one subframe includes multiple Whether the total length of each symbol can be divided into data symbols and guard bands) reaches the fixed length.
  • the preset position in the subframe such as the length of the guard band of the first symbol or the guard band length of the last symbol, may be controlled such that the total length of the subframe reaches the fixed length; Similarly, if the total length of the subframe exceeds the fixed length, the length of the guard band shortening the preset position in the subframe may be controlled such that the total length of the subframe is shortened to the fixed length.
  • one slot (one subframe is divided into two slots) includes 7 OFDM symbols, and the guard band of the first symbol, such as the CP length, is configured to be longer than the guard bands of the remaining 6 OFDM symbols, to Make sure that the length of one time slot is a fixed length of 0.5ms.
  • the first guard band is a ZP and the second guard band is a CP.
  • FIG. 6a it is a subframe structure diagram according to an embodiment of the present invention.
  • an uplink part and a downlink part may be included in one subframe, and uplink and downlink handover protection time (ie, GP in the figure) is configured between the uplink part and the downlink part, and the uplink part includes N symbols, and the downlink part includes M symbols.
  • N symbols and/or M symbols that requires hardware switching, as shown in the downlink portion ZP in the figure, which is a location where hardware switching is required.
  • N and M are greater than or equal to 1.
  • the time division duplex (“TDD”) system is shown in the figure, and the uplink and downlink handover protection time length is greater than the symbol length (such as the length of the symbol n: data length plus CP length). It should be understood that in other optional embodiments, the communication system may also be a Frequency Division Duplex (“FDD”) system. Moreover, if the uplink and downlink handover protection time length is less than or equal to the data length plus the CP length, the processing can still be performed according to the embodiment.
  • FDD Frequency Division Duplex
  • the wireless network device may further include (not shown):
  • a comparing unit 14 configured to compare a length of the first guard band with a length of the second guard band, wherein a length of the second guard band is pre-configured
  • the configuration unit 12 is further configured to: the comparison result in the comparison unit 14 is the first protection When the length of the belt is smaller than the length of the second protective tape, the length of the first protective tape is configured to be the same as the length of the second protective tape.
  • the base station can perform a guard band design based on the location of the hardware handover and the handover time.
  • the comparing unit 14 may obtain the length of the first guard band configured at the hardware switching position, and acquire the length of the second guard band at the non-hardware switching position, and compare the length of the first guard band with the first The length of the two guard bands is compared.
  • the configuration unit 12 can configure the length of the first protection band to be the same as the length of the second protection band, such as by using the first protection band.
  • the zero-padding process is implemented to configure the length of the first guard band to be the same as the length of the second guard band.
  • the configuration unit 12 may further configure, according to the length difference between the second guard band and the first guard band, a second guard band having the same length and the length difference for the first data symbol, configured for the first data symbol.
  • the guard band includes the first guard band corresponding to the switching time and the second guard band having the same length difference.
  • FIG. 6b is a hardware switching scenario diagram according to an embodiment of the present invention.
  • the first protection band is a ZP
  • the second protection band is a CP.
  • the location of the downlink part ZP in Figure 6a is the location where hardware switching is required. It is assumed that hardware switching such as analog beam switching is required between the symbol n and the symbol n+1 in the subframe, and the symbol n+1 corresponds to the above.
  • the length of the first guard band that is, the length of the ZP, which is equal to the switching time of the hardware switching
  • T_GP the length of the second guard band configured for the second data symbol
  • T_CP the length of the normal CP
  • the symbol is the second symbol (including the symbol n), and the normal CP is configured; at the symbol with beam switching, the front part of the CP is used for analog beam switching, which is equivalent to the ZP configured with the T_GP length (T_CP-T_GP can be called Remaining CP).
  • the configuration unit 12 can also configure the ZP length as a normal CP length, for example, by performing zero-padding on the ZP, and configuring the ZP length to be the same as the normal CP length. That is to say, the transmitting unit 13 has symbols for analog beam switching, such as Orthogonal Frequency Division Multiple Access (OFDMA) symbols.
  • OFDM Orthogonal Frequency Division Multiple Access
  • the guard band configured for the first data symbol that is, the guard band in the symbol n+1
  • the guard band configured for the first data symbol includes the ZP (first guard band) and the remaining CP
  • the user equipment receives the symbol.
  • the ZP and the CP can be directly removed, and the frequency domain equalization is directly performed (that is, the user equipment is equivalent to treating the ZP as a CP); or the user equipment can also estimate the channel delay extension between the base station and the user equipment. According to the relationship between the channel delay spread and the remaining CPs, CP equalization or ZP equalization is performed.
  • the channel delay spread is smaller than the remaining CP length
  • CP equalization is performed, and when the remaining CP length is smaller than the channel delay spread, the channel delay spread is subtracted from the residual CP as the "channel delay spread length" in the ZP system.
  • ZP equalization is performed.
  • the comparing unit 14 is further configured to compare a length of the first guard band with a length of the second symbol, where the second symbol includes the second data symbol and the second guard band;
  • the wireless network device further includes:
  • the determining unit 15 is configured to determine whether the system in which the subframe is located is a single carrier system. For example, when the comparison result of the comparison unit 14 is that the length of the first guard band is greater than the length of the second guard band, and the length of the first guard band is less than the length of the second symbol , the determination is made; the determination can also be made at other time points, which is not limited herein.
  • the configuration unit 12 is further configured to determine, in the determining unit 15, that the system in which the subframe is located is a single carrier system, and the comparison result of the comparison unit 14 is that the length of the first guard band is greater than the second protection. a length of the strip, and when a length of the first guard band is less than a length of the second symbol, a difference between a length of the second symbol and a length of the first guard band is used as the first data symbol The length of the data that needs to be transferred.
  • the determining unit 15 may further determine whether the current communication system is a single carrier system or a multi-carrier system. As shown in FIG. 6c, if the current communication system is a single carrier system, the configuration unit 12 can configure a normal CP at the symbol without the beam switching, that is, at the symbol n, where the symbol with the beam switching, that is, the symbol n+1, The T_GP is filled with 0 or other processing (so that the user equipment does not receive the T_GP part of the information, or makes the user set It is assumed that this part of the information is invalid and not received, and the user equipment needs to know the length of the first guard band), and the length of the second data symbol and the second guard band and (the length of the symbol n), that is, T_symb and the first The difference of the guard band, that is, T_GP, is the length of the first data symbol, and the first data symbol length can be used for transmitting
  • the wireless network device may further include (not shown):
  • the mapping unit 16 is configured to determine, in the determining unit 15, that the system in which the subframe is located is not a single carrier system, and the length of the first guard band is greater than the length of the second guard band, and the Calculating a difference between a length of the first guard band and a length of the second guard band when the length of a guard band is less than a length of the second symbol, according to the difference and the second data symbol Determining the number of subcarriers that need to be separated, and performing frequency domain distributed resource mapping according to the number of subcarriers, so that the user equipment demodulates the first data symbol;
  • the configuration unit 12 is further configured to use a difference between a length of the second symbol and a length of the first guard band as a length of the first data symbol, and a target length in the first data symbol As the length of data to be transmitted, the target length is a quotient of the length of the second data symbol plus the number of the subcarriers plus one.
  • the subframe is determined to be in a multi-carrier system.
  • the multi-carrier system includes, but is not limited to, an OFDM system, a pre-coded OFDM system (discrete four-ier transform-spread OFDM, or "DFT-s-OFDM").
  • the distributed resource mapping refers to performing data mapping of one subcarrier at a certain interval subcarrier (that is, the number of subcarriers mentioned above), and does not send data on the subcarrier corresponding to the number of subcarriers of the interval subcarrier or Fill in the zero.
  • the mapping unit 16 determines, according to the difference value and the length of the second data symbol, a specific manner of the number of subcarriers to be separated: a quotient of the difference and the length of the second data symbol.
  • the value is compared with (k-1)/k, k/(k+1); if the quotient is less than or equal to (k-1)/k, it is determined that the number of subcarriers required to be spaced is k-1; If the quotient is greater than (k-1)/k and less than k/(k+1), it is determined that the number of subcarriers required to be spaced is k.
  • k is an integer greater than or equal to 2.
  • the configuration unit 12 can configure a normal CP at the symbol n of the beamless handover, at the symbol n+1 where the beam switching is performed,
  • the mapping unit 16 determines the number of subcarriers required to be separated according to the difference between the length of the first guard band and the length of the second guard band, that is, (T_GP-T_CP) and the normal data length T_data, so that distributed resource mapping is performed, etc.
  • the effect is that the valid information is repeatedly transmitted in the time domain, and the configuration unit 12 configures the normal CP at the symbol n, and at the symbol n+1, the T_GP is filled with 0 or performs other processing (so that the user equipment does not receive the T_GP part).
  • the effective data length is shortened (the effective data length is the target length, that is, the quotient of T_data plus the number of subcarriers required to be added by one). Further, please refer to FIG.
  • the user equipment may demodulate the remaining part of the data, that is, T_CP' as the equivalent CP of the data part of the symbol n+1. For example, the user equipment may directly remove the ZP and the CP, and directly perform the frequency. Domain equalization, or CP equalization or ZP equalization can be performed by estimating the channel delay spread between the base station and the user equipment, and details are not described herein again.
  • the valid data received by the user equipment is the (T_data-T_CP'-(T_GP-T_CP)) part, that is, T_data/2.
  • mapping unit 16 may be in T_data*3/4>(T_GP-T_CP)>2*T_data/3.
  • the valid data transmitted by the transmitting unit 13 at the symbol n+1 is T_data/4.
  • FIG. 7a is a block diagram of another seed frame according to an embodiment of the present invention.
  • an uplink part and a downlink part may be included in one subframe, and uplink and downlink handover protection time is configured between the uplink part and the downlink part (ie, In the figure, GP)
  • the uplink portion includes N symbols
  • the downlink portion includes M symbols.
  • N and M are greater than or equal to 1.
  • T_symb each symbol including a data portion (data symbol) and a guard band portion, and assuming that the total length of each symbol is the same, is denoted as T_symb.
  • T_GP the length of the first guard band, that is, the length of the ZT, which is equal to the switching time of the hardware switching
  • T_CP the length of the second guard band, which is the second data symbol, that is, the normal CP
  • the configuration unit 12 may be in the no-beam switching symbol.
  • the normal CP is configured; at the symbol n with beam switching, the front portion of the CP is used for analog beam switching, equivalent to the ZT configuring the length of the T_GP, or the configuration unit 12 is You can configure the ZT length as T_CP, which is not mentioned here.
  • the user equipment adopts the ZT method for frequency domain equalization.
  • the CP method is used for frequency domain equalization, thereby improving the system equalization performance.
  • the determining unit 15 may further determine whether the current communication system is a single carrier system or a multi-carrier system. As shown in FIG. 7c, if the current communication system is a single carrier system, the configuration unit 12 can configure a normal CP at the symbol of no beam switching, that is, the symbol n+1, and at the symbol n with the beam switching symbol, The T_GP is filled with 0, (T_symb-T_GP) is used as the length of the first data symbol, and the (T_symb-T_GP) can be used for transmitting data, and the effective data length transmitted by the transmitting unit 13 is shortened.
  • the user equipment When receiving the normal CP, the user equipment adopts the CP method for frequency domain equalization.
  • the ZP method is used for frequency domain equalization, thereby improving the system equalization performance.
  • the comparison unit 14 detects T_CP ⁇ T_GP ⁇ T_symb, and the determining unit 15 determines that the current communication system is a multi-carrier system, as shown in FIG. 7d
  • the configuration unit 12 can configure the normal CP at the symbol n+1 without beam switching.
  • the mapping unit 16 determines the subcarriers that need to be spaced according to the difference between the length of the first guard band and the length of the second guard band, that is, (T_GP-T_CP) and the normal data length T_data.
  • the number is used for distributed resource mapping.
  • the mapping unit 16 can control every One subcarrier performs frequency domain resource mapping such that the effective information is repeatedly transmitted in the time domain, and the valid data transmitted by the transmitting unit 13 is (T_data-T_CP'-(T_GP-T_CP)), that is, T_data/2.
  • the base station can also perform other distributed mapping selection according to the required analog beam switching time, and details are not described herein again.
  • the base station can dynamically configure the guard band of the local cell symbol according to the location of the hardware handover and the required handover time, and perform special processing on the transmitted symbol at the hardware switching position without setting an additional GP. Therefore, the air interface reservation overhead required for the hardware switching location is reduced, which effectively improves the air interface resource utilization, increases the available air interface resources, and improves the system capacity.
  • different base station cells can implement adaptive configuration of the guard band, which reduces the complexity of the unified design frame structure.
  • FIG. 8 is a schematic flowchart of a data symbol transmission method according to an embodiment of the present invention. Specifically, as shown in FIG. 8, the method includes the following steps:
  • the first wireless network device determines a location in the current subframe that requires hardware switching and a handover time of the hardware handover.
  • the first wireless network device configures a first protection band according to the switching time as a first data symbol corresponding to the location.
  • the length of the first guard band is greater than or equal to the switching time.
  • the first wireless network device uses, as the second data symbol, a data symbol other than the first data symbol in the subframe, and configures a second guard band for the second data symbol.
  • the first protection band may include a zero insertion prefix ZP, and the second protection band is a cyclic prefix CP.
  • the first guard band may include a zero insertion suffix ZT, and the second guard band is a cyclic prefix CP.
  • the first wireless network device may compare the length of the first protection band with the length of the second protection band; if the length of the first protection band is less than the length of the second protection band
  • the length of the first guard band is configured to be the same as the length of the second guard band.
  • the length of the second guard band may be pre-configured.
  • the first wireless network device may further compare the length of the first guard band with the length of the second guard band and the length of the second symbol, where the second symbol includes the second a data symbol and the second guard band; determining whether the system in which the subframe is located is a single carrier system; The system in which the frame is located is a single carrier system, and the length of the first guard band is greater than the length of the second guard band, and the length of the first guard band is less than the length of the second symbol, A difference between a length of the second symbol and a length of the first guard band is used as a length of data to be transmitted in the first data symbol.
  • the first wireless network device may also be in a system in which the subframe is not a single carrier system, and a length of the first guard band is greater than a length of the second guard band, and the first Calculating a difference between a length of the first guard band and a length of the second guard band when the length of a guard band is less than a length of the second symbol, according to the difference and the second data symbol Determining the number of subcarriers that need to be separated, and performing frequency domain distributed resource mapping according to the number of subcarriers, so that the second wireless network device demodulates the first data symbol; a difference between a length of the first guard band and a length of the first guard band, and a target length in the first data symbol as a length of data to be transmitted, wherein the target length is A quotient of the length of the second data symbol plus the number of the subcarriers plus one.
  • the first wireless network device may further send a notification message to the second wireless network device, where the notification message is used to notify the second wireless network device.
  • the configuration information of the subframe where the configuration information includes any one or more of location information of the first data symbol, location information of the first guard band, and length information of the first guard band .
  • the user equipment is enabled to perform data reception based on the subframe configuration information.
  • the notification message may be sent by the first wireless network device, such as a base station, to the second wireless network device, such as a user equipment, through a broadcast channel or a control channel.
  • the notification message is a message that all users in the base station cell can receive, including but not limited to a synchronization channel, a physical broadcast message, a system broadcast message indicated by a physical common control channel, and the like.
  • the location information of the first data symbol, the location information of the first guard band, and the length information of the first guard band may also be determined in advance by the user equipment.
  • the first wireless network device sends the subframe to a second wireless network device.
  • the sending the subframe to the second wireless network device may be specifically: sending, by using a time division multiplexing manner, the first data symbol, the first protection band, and the first Two data symbols and the second guard band, the first data symbol and the second data symbol including data to be transmitted.
  • the embodiment of the present invention is based on the same concept as the device embodiment of FIG. 5, where the first wireless network device corresponds to the wireless network device in the corresponding embodiment of FIG. 5, and the second wireless network device corresponds to the embodiment in FIG.
  • the technical effects are the same.
  • the specific implementation refer to the description of the embodiment of FIG. 5, and details are not described herein again.
  • FIG. 9 is a schematic structural diagram of a data symbol transmission system according to an embodiment of the present invention.
  • the data symbol transmission system according to an embodiment of the present invention includes: a first wireless network.
  • the first wireless network device 1 is configured to determine a location in the current subframe that requires hardware switching and a handover time of the hardware handover, and configure a first protection according to the handover time as a first data symbol corresponding to the location a length of the first guard band is greater than or equal to the switching time; a data symbol other than the first data symbol in the subframe is used as a second data symbol, and configured for the second data symbol a second guard band; transmitting the subframe to the second wireless network device 2;
  • the second wireless network device 2 is configured to receive a subframe sent by the first wireless network device 1, where the subframe includes a first symbol configured with a first protection band and a second configured with a second protection band a frequency domain equalization technique corresponding to the first guard band, performing frequency domain equalization on the first symbol, and using a frequency domain equalization technique corresponding to the second guard band to pair the second symbol Perform frequency domain equalization.
  • the first wireless network device may be a base station or a user equipment.
  • the second wireless network device may be a user equipment or a base station.
  • the communication involved in the embodiment of the present invention may be between a base station and a user equipment, or between a base station and a base station, such as between a macro base station and a small base station, and may also be a user equipment and a user equipment. Between, for example, communication in a D2D network.
  • the first symbol includes a first guard band and a first data symbol
  • the second symbol further includes a second guard band and a second data symbol, where the first data symbol and the second data symbol include The data transferred.
  • the first protection band may be a zero insertion prefix ZP or a zero insertion suffix ZT
  • the second protection band may be a cyclic prefix CP.
  • the second wireless network device performs frequency domain equalization on the first symbol by using a frequency domain equalization technology corresponding to the first protection band, where the second wireless network device determines that the second wireless network device determines Whether the carrier system in which the subframe is located is a single carrier system; if it is a single carrier system, the second wireless The network device performs frequency domain equalization on the first symbol by using a frequency domain equalization technology corresponding to the first protection band; if not a single carrier system, the second wireless network device adopts the second protection Performing frequency domain equalization on the first symbol with a corresponding frequency domain equalization technique.
  • system further includes:
  • the first wireless network device 1 transmits, to the second wireless network device 2, a notification message including configuration information of the subframe, where the configuration information includes location information of the first data symbol, the first One or more of position information of a guard band and length information of the first guard band;
  • the second wireless network device 2 receives the notification message including the configuration information of the subframe sent by the first wireless network device 1, and receives the subframe according to the configuration information.
  • the location information of the first data symbol, the location information of the first guard band, and the length information of the first guard band may also be the first wireless network device and the second wireless network.
  • the equipment is pre-negotiated and determined.
  • the first wireless network device such as the base station
  • the first symbol (including the ZP and the data part) of the ZP is configured, and the first protection band is transmitted, and the first data band is transmitted.
  • the data part is sent first, and then ZT is sent.
  • the second wireless network device such as the user equipment
  • receives the first symbol of the ZP the ZP equalization method is used for frequency domain equalization, and when the second symbol of the CP is received, the CP equalization method is used for frequency domain equalization, thereby improving System balance performance.
  • the CP When the user equipment performs frequency domain equalization by the CP equalization method, the CP can be directly discarded and only the data part is processed; when the frequency domain equalization is performed by the ZP (or ZT) equalization method, the ZP (or ZT) after the symbol cannot be used. Superimposed on the preceding symbols to form a cyclic symbol, the linear convolution system is changed into a circular convolution system to achieve frequency domain equalization, which will not be described here.
  • the first wireless network device 1 can be used to perform the data symbol transmission method shown in FIG. 8 and corresponds to the wireless network device in the embodiment of FIG. 5.
  • the first wireless network device 1 can be used to perform the data symbol transmission method shown in FIG. 8 and corresponds to the wireless network device in the embodiment of FIG. 5.
  • the wireless network device such as the base station
  • the extra GP is reserved, which reduces the air interface reservation overhead required for the hardware switching position, which effectively improves the air interface resource utilization and increases the available air interface. Resources and increased system capacity.
  • different base station cells can implement adaptive configuration of the guard band, which reduces the complexity of the unified design frame structure.
  • FIG. 10 is a schematic structural diagram of another wireless network device according to an embodiment of the present invention.
  • the wireless network device in the embodiment of the present invention includes: a communication interface 300, a memory 200, and The processor 100 is connected to the communication interface 300 and the memory 200, respectively.
  • the memory 200 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory.
  • the communication interface 300, the memory 200, and the processor 100 may be connected to each other through a bus, or may be connected by other means. In the present embodiment, a bus connection will be described.
  • the wireless network device in the embodiment of the present invention may correspond to the wireless network device corresponding to FIG. 5 and the first wireless network device in the corresponding embodiment of FIG. 9, and may specifically be a base station in the communication network. Or the user equipment.
  • the wireless network device in the embodiment of the present invention may correspond to the wireless network device corresponding to FIG. 5 and the first wireless network device in the corresponding embodiment of FIG. 9, and may specifically be a base station in the
  • the memory 200 is configured to store driver software
  • the processor 100 reads the driver software from the memory and executes it under the action of the driver software:
  • the subframe is transmitted to the other wireless network device through the communication interface 300.
  • the processor 100 is configured to send the subframe to another wireless network device, and specifically perform the following steps:
  • the first data symbol and the second data symbol include data that needs to be transmitted.
  • the processor 100 is further configured to read the driver software from the memory and execute the function of the driver software:
  • the length of the first guard band is less than the length of the second guard band, the length of the first guard band is configured to be the same as the length of the second guard band.
  • the processor 100 is further configured to read the driver software from the memory and execute the function of the driver software:
  • the length of the first guard band is greater than the length of the second guard band, and the length of the first guard band is less than the length of the second symbol, And the difference between the length of the second symbol and the length of the first guard band is used as the length of data to be transmitted in the first data symbol.
  • the processor 100 is further configured to read the driver software from the memory and execute the function of the driver software:
  • the system in which the subframe is located is not a single carrier system, and the length of the first guard band is greater than the length of the second guard band, and the length of the first guard band is less than the length of the second symbol And calculating a difference between the length of the first guard band and the length of the second guard band, determining the number of subcarriers to be separated according to the difference and the length of the second data symbol, and according to the The number of subcarriers is subjected to frequency domain distributed resource mapping, so that the another wireless network device demodulates the first data symbol;
  • the target length is a quotient of the length of the second data symbol plus the number of the subcarriers plus one.
  • the processor 100 is further configured to read the driver software from the memory and execute the function of the driver software:
  • a notification message to the another wireless network device, where the notification message is used to notify configuration information of the subframe of the another wireless network device, where the configuration information includes the first data One or more of position information of the symbol, position information of the first guard band, and length information of the first guard band.
  • the location information of the first data symbol, the location information of the first guard band, and the length information of the first guard band are determined in advance by the another wireless network device.
  • the first protection band includes a zero insertion prefix ZP
  • the second protection band includes a cyclic prefix CP.
  • the first protection band includes a zero insertion suffix ZT
  • the second protection band includes a cyclic prefix CP.
  • FIG. 11 is a schematic structural diagram of still another wireless network device according to an embodiment of the present invention.
  • the wireless network device according to the embodiment of the present invention includes: a communication interface. 600.
  • the memory 500 and the processor 400 are respectively connected to the communication interface 600 and the memory 500.
  • the memory 500 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory.
  • the communication interface 600, the memory 500, and the processor 400 may be connected to each other through a bus, or may be connected by other means. In the present embodiment, a bus connection will be described.
  • the wireless network device in the embodiment of the present invention may be specifically referred to the related description of the other wireless network device in the foregoing embodiment of FIG. 5 and the second wireless network device in the corresponding embodiment of FIG.
  • the memory 500 is configured to store driver software
  • the processor 400 reads the driver software from the memory and executes it under the action of the driver software:
  • the processor 400 is configured to perform the frequency domain corresponding to the first protection band.
  • the balance technique performs frequency domain equalization on the first symbol, and specifically performs the following steps:
  • frequency domain equalization is performed on the first symbol by using a frequency domain equalization technology corresponding to the first protection band;
  • frequency domain equalization is performed on the first symbol by using a frequency domain equalization technique corresponding to the second guard band.
  • the first symbol further includes a first data symbol
  • the second symbol further includes a second data symbol
  • the first data symbol and the second data symbol include data to be transmitted.
  • the first protection band includes a zero insertion prefix ZP
  • the second protection band includes a cyclic prefix CP.
  • the first protection band includes a zero insertion suffix ZT
  • the second protection band includes a cyclic prefix CP.
  • processor 400 is further configured to perform the following steps:
  • a notification message that includes configuration information of the subframe sent by the another wireless network device, and receiving the subframe according to the configuration information, where the configuration information includes the One or more of position information of a data symbol, position information of the first guard band, and length information of the first guard band.
  • the location information of the first data symbol, the location information of the first guard band, and the length information of the first guard band are determined in advance by the another wireless network device.
  • the disclosed apparatus and method 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 in an electrical, mechanical or other form.
  • the unit described as a separate component may or may not be physically separated.
  • the components displayed for the unit may or may not be physical units, ie may be located in one place, or may be distributed over 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 above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the above software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present invention. Part of the steps.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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Abstract

本发明实施例公开了一种数据符号传输方法及无线网络设备，其中，所述无线网络设备包括：信息确定单元，用于确定当前子帧中需要进行硬件切换的位置以及所述硬件切换的切换时间；配置单元，用于根据所述切换时间为所述位置对应的第一数据符号配置第一保护带，所述第一保护带的长度大于或等于所述切换时间；所述配置单元，还用于将所述子帧中除所述第一数据符号以外的数据符号作为第二数据符号，并为所述第二数据符号配置第二保护带；发送单元，用于向另一无线网络设备发送所述子帧。采用本方案，能够提升资源利用率，增加系统容量。

Description

一种数据符号传输方法及无线网络设备 技术领域
本发明涉及通信技术领域，尤其涉及一种数据符号传输方法及无线网络设备。
背景技术
在宽带通信系统中，接收机在接收数据时，一般会进行频域均衡，以对抗由于多径引起的信道频域选择性衰落。接收机在进行频域均衡时，必须保证接收到的前一符号对后一符号无符号间干扰，这就需要在每个符号前预留保护带以抵抗前一符号的符号间干扰。常用保护带设计方法包括循环前缀(cyclic prefix，简称为“CP”)法、插零前缀(zero prefix，简称为“ZP”)法和插零后缀(Zero Tail，简称为“ZT”)法。此外，为了降低基站及用户设备(user equipment，简称为“UE”)的功耗，目前可通过多根天线进行波束成形(beamforming，简称为“BF”)，增大基站覆盖范围，包括数字波束成形(digital beamforming，简称为“DBF”)、模拟波束成形(analog beamforming，简称为“ABF”)和混合模拟波束成形(hybrid beamforming，简称为“HBF”)三种。其中，ABF和HBF技术中的波束成形是依赖于射频移相器完成的，该射频移相器在进行相位调整时需要消耗一定的时间，即需要考虑波束切换时间的影响。
目前，在实际应用中，如在CP通信系统中，如图1所示，考虑到波束切换时间，是在需要进行波束切换的符号处的CP前面，预留一定的保护间隔(guard period，简称为“GP”)，使得波束切换不影响后一符号的正常发送或接收。然而，该方式需要在CP的基础上预留额外的GP，减少了可用的空口资源，导致空口资源利用率下降，降低了系统容量。
发明内容
本发明实施例提供一种数据符号传输方法及无线网络设备，能够提升资源 利用率，增加系统容量。
第一方面，本发明实施例提供了一种无线网络设备，包括：信息确定单元、配置单元以及发送单元；其中，
信息确定单元，用于确定当前子帧中需要进行硬件切换的位置以及所述硬件切换的切换时间；
配置单元，用于根据所述切换时间为所述位置对应的第一数据符号配置第一保护带，所述第一保护带的长度大于或等于所述切换时间；
所述配置单元，还用于将所述子帧中除所述第一数据符号以外的数据符号作为第二数据符号，并为所述第二数据符号配置第二保护带；
发送单元，用于向另一无线网络设备发送所述子帧。
其中，该无线网络设备可以是基站，也可以是用户设备；另一无线网络设备可以是用户设备，也可以是基站。示例的，本发明实施例中涉及的通信既可以是基站和用户设备之间的，也可以是基站和基站之间的，比如宏基站和小基站之间的，还可以是用户设备和用户设备之间的，比如D2D网络中的通信。
其中，所述第一保护带可包括插零前缀ZP或插零后缀ZT，所述第二保护带可以为循环前缀CP。
在一些实施例中，所述发送单元具体用于：
以时分复用的方式向另一无线网络设备发送所述第一数据符号、所述第一保护带、所述第二数据符号及所述第二保护带，所述第一数据符号和所述第二数据符号包括需要传输的数据。
在一些实施例中，所述无线网络设备还包括：
比较单元，用于将所述第一保护带的长度与所述第二保护带的长度进行比较，其中，所述第二保护带的长度是预先配置得到的；
所述配置单元，还用于在所述比较单元的比较结果为所述第一保护带的长度小于所述第二保护带的长度时，将所述第一保护带的长度配置为与所述第二保护带的长度相同。
在一些实施例中，所述无线网络设备还包括：
比较单元，用于分别将所述第一保护带的长度与所述第二保护带的长度及第二符号的长度进行比较，所述第二符号包括所述第二数据符号和所述第二保 护带；
确定单元，用于确定所述子帧所处系统是否为单载波系统；
所述配置单元，还用于在所述确定单元确定出所述子帧所处系统为单载波系统，且所述比较单元的比较结果为所述第一保护带的长度大于所述第二保护带的长度，且所述第一保护带的长度小于所述第二符号的长度时，将所述第二符号的长度与所述第一保护带的长度的差作为所述第一数据符号中需要传输的数据的长度。
在一些实施例中，所述无线网络设备还包括：
比较单元，用于分别将所述第一保护带的长度与所述第二保护带的长度及第二符号的长度进行比较，所述第二符号包括所述第二数据符号和所述第二保护带；
确定单元，用于确定所述子帧所处系统是否为单载波系统；
映射单元，用于在所述确定单元确定出所述子帧所处系统不为单载波系统且所述比较单元的比较结果为所述第一保护带的长度大于所述第二保护带的长度，且所述第一保护带的长度小于所述第二符号的长度时，计算所述第一保护带的长度与所述第二保护带的长度的差值，根据所述差值以及所述第二数据符号的长度确定需要间隔的子载波数目，并按照所述子载波数目进行频域分布式资源映射；
所述配置单元，还用于将所述第二符号的长度与所述第一保护带的长度的差作为所述第一数据符号的长度，并将所述第一数据符号中的目标长度作为需要传输的数据的长度，其中，所述目标长度为所述第二数据符号的长度与所述子载波数目加一的商。
其中，所述分布式资源映射是指每隔一定的间隔子载波(即上述的子载波数目)进行一个子载波的数据映射，在该间隔子载波即该子载波数目对应的子载波上不发送数据或者填零。
其中，所述映射单元根据所述差值以及所述第二数据符号的长度确定需要间隔的子载波数目的具体方式为：将所述差值与所述第二数据符号的长度的商值和(k-1)/k、k/(k+1)进行比较；若所述商值小于或等于(k-1)/k，则确定需要间隔的子载波数目为k-1；若所述商值大于(k-1)、且小于k/(k+1)，则确定需要间 隔的子载波数目为k。其中，k为大于等于2的整数。
在一些实施例中，所述发送单元，还用于向所述另一无线网络设备发送通知消息，所述通知消息用于通知所述另一无线网络设备所述子帧的配置信息，所述配置信息包括所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息中的一项或多项。
其中，所述通知消息可以是所述无线网络设备通过广播信道或者控制信道发送给所述另一无线网络设备的。具体的，该通知消息包括但不限于同步信道、物理广播消息、物理公共控制信道指示的系统广播消息等等。
在一些实施例中，所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息是与所述另一无线网络设备预先协商确定出的。
第二方面，本发明实施例提供了还一种无线网络设备，包括：接收单元以及处理单元；其中，
接收单元，用于接收另一无线网络设备发送的子帧，所述子帧包括配置有第一保护带的第一符号以及配置有第二保护带的第二符号；
处理单元，用于采用与所述第一保护带对应的频域均衡技术对所述对第一符号进行频域均衡，并采用与所述第二保护带对应的频域均衡技术对所述对第二符号进行频域均衡。
其中，该无线网络设备可以是用户设备，也可以是基站；另一无线网络设备可以是基站，也可以是用户设备。
其中，所述第一符号还包括第一数据符号，所述第二符号还包括第二数据符号，所述第一数据符号和所述第二数据符号包括需要传输的数据。可选的，所述第一保护带可包括插零前缀ZP或插零后缀ZT，所述第二保护带可以为循环前缀CP。
在一些实施例中，所述处理单元在执行所述采用与所述第一保护带对应的频域均衡技术对所述对第一符号进行频域均衡的具体方式为：
确定所述子帧所处载波系统是否为单载波系统；
若为单载波系统，则采用与所述第一保护带对应的频域均衡技术对所述对第一符号进行频域均衡；
若不为单载波系统，则采用与所述第二保护带对应的频域均衡技术对所述对第一符号进行频域均衡。
在一些实施例中，所述接收单元，还用于接收所述另一无线网络设备发送的包括所述子帧的配置信息的通知消息，并根据所述配置信息接收所述子帧，其中，所述配置信息包括所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息中的一项或多项。
在一些实施例中，所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息是与所述另一无线网络设备预先协商确定出的。
第三方面，本发明实施例提供了一种数据符号传输方法，应用于无线网络设备中，包括：
确定当前子帧中需要进行硬件切换的位置以及所述硬件切换的切换时间；
根据所述切换时间为所述位置对应的第一数据符号配置第一保护带，所述第一保护带的长度大于或等于所述切换时间；
将所述子帧中除所述第一数据符号以外的数据符号作为第二数据符号，并为所述第二数据符号配置第二保护带；
向另一无线网络设备发送所述子帧。
其中，所述第一保护带可包括插零前缀ZP或插零后缀ZT，所述第二保护带可以为循环前缀CP。
在一些实施例中，所述向另一无线网络设备发送所述子帧，包括：
以时分复用的方式向另一无线网络设备发送所述第一数据符号、所述第一保护带、所述第二数据符号及所述第二保护带，所述第一数据符号和所述第二数据符号包括需要传输的数据。
在一些实施例中，在所述向另一无线网络设备发送所述子帧之前，所述方法还包括：
将所述第一保护带的长度与所述第二保护带的长度进行比较，其中，所述第二保护带的长度是预先配置得到的；
若所述第一保护带的长度小于所述第二保护带的长度时，将所述第一保护带的长度配置为与所述第二保护带的长度相同。
在一些实施例中，在所述向另一无线网络设备发送所述子帧之前，所述方法还包括：
分别将所述第一保护带的长度与所述第二保护带的长度及第二符号的长度进行比较，所述第二符号包括所述第二数据符号和所述第二保护带；
确定所述子帧所处系统是否为单载波系统；
若所述子帧所处系统为单载波系统，且所述第一保护带的长度大于所述第二保护带的长度，且所述第一保护带的长度小于所述第二符号的长度，则将所述第二符号的长度与所述第一保护带的长度的差作为所述第一数据符号中需要传输的数据的长度。
在一些实施例中，在所述向另一无线网络设备发送所述子帧之前，所述方法还包括：
分别将所述第一保护带的长度与所述第二保护带的长度及第二符号的长度进行比较，所述第二符号包括所述第二数据符号和所述第二保护带；
确定所述子帧所处系统是否为单载波系统；
若所述子帧所处系统不为单载波系统，且所述第一保护带的长度大于所述第二保护带的长度，且所述第一保护带的长度小于所述第二符号的长度，则计算所述第一保护带的长度与所述第二保护带的长度的差值，根据所述差值以及所述第二数据符号的长度确定需要间隔的子载波数目，并按照所述子载波数目进行频域分布式资源映射，以使所述另一无线网络设备对所述第一数据符号进行解调；
将所述第二符号的长度与所述第一保护带的长度的差作为所述第一数据符号的长度，并将所述第一数据符号中的目标长度作为需要传输的数据的长度，其中，所述目标长度为所述第二数据符号的长度与所述子载波数目加一的商。
其中，所述分布式资源映射是指每隔一定的间隔子载波(即上述的子载波数目)进行一个子载波的数据映射，在该间隔子载波即该子载波数目对应的子载波上不发送数据或者填零。
其中，所述根据所述差值以及所述第二数据符号的长度确定需要间隔的子载波数目的具体方式为：将所述差值与所述第二数据符号的长度的商值和 (k-1)/k、k/(k+1)进行比较；若所述商值小于或等于(k-1)/k，则确定需要间隔的子载波数目为k-1；若所述商值大于(k-1)、且小于k/(k+1)，则确定需要间隔的子载波数目为k。其中，k为大于等于2的整数。
在一些实施例中，所述方法还包括：
向所述另一无线网络设备发送通知消息，所述通知消息用于通知所述另一无线网络设备所述子帧的配置信息，所述配置信息包括所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息中的一项或多项。
其中，所述通知消息可以是所述无线网络设备通过广播信道或者控制信道发送给所述另一无线网络设备的。具体的，该通知消息包括但不限于同步信道、物理广播消息、物理公共控制信道指示的系统广播消息等等。
在一些实施例中，所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息是与所述另一无线网络设备预先协商确定出的。
第四方面，本发明实施例还提供了一种数据符号传输方法，应用于无线网络设备中，包括：
接收另一无线网络设备发送的子帧，所述子帧包括配置有第一保护带的第一符号以及配置有第二保护带的第二符号；
采用与所述第一保护带对应的频域均衡技术对所述对第一符号进行频域均衡，并采用与所述第二保护带对应的频域均衡技术对所述对第二符号进行频域均衡。
其中，所述第一符号还包括第一数据符号，所述第二符号还包括第二数据符号，所述第一数据符号和所述第二数据符号包括需要传输的数据。可选的，所述第一保护带可包括插零前缀ZP或插零后缀ZT，所述第二保护带可以为循环前缀CP。
在一些实施例中，所述采用与所述第一保护带对应的频域均衡技术对所述对第一符号进行频域均衡，包括：
确定所述子帧所处载波系统是否为单载波系统；
若为单载波系统，则采用与所述第一保护带对应的频域均衡技术对所述对 第一符号进行频域均衡；
若不为单载波系统，则采用与所述第二保护带对应的频域均衡技术对所述对第一符号进行频域均衡。
在一些实施例中，所述方法还包括：
接收所述另一无线网络设备发送的包括所述子帧的配置信息的通知消息，并根据所述配置信息接收所述子帧，其中，所述配置信息包括所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息中的一项或多项。
在一些实施例中，所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息是与所述另一无线网络设备预先协商确定出的。
第五方面，本发明实施例提供了一种数据符号传输系统，包括：第一无线网络设备和第二无线网络设备；其中，
所述第一无线网络设备，用于确定当前子帧中需要进行硬件切换的位置以及所述硬件切换的切换时间；根据所述切换时间为所述位置对应的第一数据符号配置第一保护带，所述第一保护带的长度大于或等于所述切换时间；将所述子帧中除所述第一数据符号以外的数据符号作为第二数据符号，并为所述第二数据符号配置第二保护带；向所述第二无线网络设备发送所述子帧；
所述第二无线网络设备，用于接收第一无线网络设备发送的子帧，所述子帧包括配置有第一保护带的第一符号以及配置有第二保护带的第二符号；采用与所述第一保护带对应的频域均衡技术对所述对第一符号进行频域均衡，并采用与所述第二保护带对应的频域均衡技术对所述对第二符号进行频域均衡。
其中，所述第一无线网络设备可以是基站，也可以是用户设备；所述第二无线网络设备可以是用户设备，也可以是基站。示例的，本发明实施例中涉及的通信既可以是基站和用户设备之间的，也可以是基站和基站之间的，比如宏基站和小基站之间的，还可以是用户设备和用户设备之间的，比如D2D网络中的通信。
其中，所述第一符号包括第一保护带和第一数据符号，所述第二符号还包括第二保护带和第二数据符号，所述第一数据符号和所述第二数据符号包括需 要传输的数据。可选的，所述第一保护带可包括插零前缀ZP或插零后缀ZT，所述第二保护带可以为循环前缀CP。
在一些实施例中，所述第二无线网络设备采用与所述第一保护带对应的频域均衡技术对所述对第一符号进行频域均衡，可以具体为：所述第二无线网络设备确定所述子帧所处载波系统是否为单载波系统；若为单载波系统，则所述第二无线网络设备采用与所述第一保护带对应的频域均衡技术对所述对第一符号进行频域均衡；若不为单载波系统，则所述第二无线网络设备采用与所述第二保护带对应的频域均衡技术对所述对第一符号进行频域均衡。
在一些实施例中，所述系统还包括：
所述第一无线网络设备向所述第二无线网络设备发送包括所述子帧的配置信息的通知消息，其中，所述配置信息包括所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息中的一项或多项；
所述第二无线网络设备接收包括所述子帧的配置信息的通知消息，并根据所述配置信息接收所述子帧。
在一些实施例中，所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息还可以是所述第一无线网络设备与所述第二无线网络设备预先协商确定出的。
第六方面，本发明实施例还提供了一种计算机存储介质，所述计算机存储介质存储有程序，所述程序执行时包括上述第三方面的数据符号传输方法的部分或全部的步骤。
第七方面，本发明实施例还提供了一种计算机存储介质，所述计算机存储介质存储有程序，所述程序执行时包括上述第四方面的数据符号传输方法的部分或全部的步骤。
第八方面，本发明实施例提供了一种无线网络设备，包括：通信接口、存储器和处理器，所述处理器分别与所述通信接口和存储器连接；其中，
所述存储器用于存储驱动软件；
所述处理器从所述存储器读取所述驱动软件并在所述驱动软件的作用下执行上述第三方面的数据符号传输方法的部分或全部的步骤。
可选的，该无线网络设备为基站，或，用户设备。
第九方面，本发明实施例提供了一种无线网络设备，包括：通信接口、存储器和处理器，所述处理器分别与所述通信接口和存储器连接；其中，
所述存储器用于存储驱动软件；
所述处理器从所述存储器读取所述驱动软件并在所述驱动软件的作用下执行上述第四方面的数据符号传输方法的部分或全部的步骤。
可选的，该无线网络设备为基站，或，用户设备。
实施本发明实施例，具有如下有益效果：
本发明实施例中，无线网络设备能够根据硬件切换的位置及所需的切换时间来动态配置本小区符号的保护带，通过在硬件切换位置处对发送符号进行特殊处理，而无需预留额外的GP，从而降低了为硬件切换位置所需提供的空口预留开销，使得有效提升了空口资源利用率，增加了可以使用的空口资源，并提升了系统容量。同时，使得不同小区可以实现保护带的自适应配置，则降低了统一设计帧结构的复杂度。
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。
图1是现有技术中的一种波束切换的帧结构图；
图2是本发明实施例提供的一种通信系统的架构图；
图3a是图2所示的通信系统中的一种基站的结构示意图；
图3b是图2所示的通信系统中的一种用户设备的结构示意图；
图4是本发明实施例提供的一种混合波束成形结构示意图；
图5是本发明实施例提供的一种无线网络设备的结构示意图；
图6a是本发明实施例提供的一种子帧结构图；
图6b是本发明实施例提供的一种硬件切换场景图；
图6c是本发明实施例提供的另一种硬件切换场景图；
图6d是本发明实施例提供的再一种硬件切换场景图；
图6e是本发明实施例提供的一种频域分布式映射示意图；
图7a是本发明实施例提供的另一种子帧结构图；
图7b是本发明实施例提供的又一种硬件切换场景图；
图7c是本发明实施例提供的又一种硬件切换场景图；
图7d是本发明实施例提供的又一种硬件切换场景图；
图8是本发明实施例提供的一种数据符号传输方法的流程示意图；
图9是本发明实施例提供的一种数据符号传输系统的结构示意图；
图10是本发明实施例提供的另一种无线网络设备的结构示意图；
图11是本发明实施例提供的又一种无线网络设备的结构示意图。
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描述。
应理解，本发明实施例的技术方案可具体应用于各种通信网络中,例如：全球移动通讯系统(global system of mobile communication，简称为“GSM”)，码分多址(code division multiple access，简称为“CDMA”)系统，宽带码分多址(wideband code division multiple access wireless，简称为“WCDMA”)，通用分组无线业务(general packet radio service，简称为“GPRS”)，长期演进(long term evolution，简称为“LTE”)，未来网络，如5G，D2D(device to device)网络，M2M(machine to machine)网络等等。
本发明实施例结合无线网络设备进行描述，其中，无线网络设备可以是基站，也可以是用户设备。示例的，本发明实施例中涉及的通信既可以是基站和用户设备之间的，也可以是基站和基站之间的，比如宏基站和小基站之间的，还可以是用户设备和用户设备之间的，比如D2D网络中的通信。
在本发明实施例中，用户设备(user equipment，简称为“UE”)还可称之为终端(terminal)、移动台(mobile station，简称为“MS”)或移动终端(mobile terminal)等。其可以经无线接入网(如RAN，radio access network)与一个或多个核心网进行通信，用户设备可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。在本发 明实施例中，基站可以是GSM或CDMA中的基站，如基站收发台(base transceiver station，简称为“BTS”)，也可以是WCDMA中的基站，如NodeB，还可以是LTE中的演进型基站，如eNB或e-NodeB(evolutional Node B)，或未来网络中的基站，本发明实施例不做限定。
下面对本发明实施例的应用场景进行介绍，以基站和用户设备之间的通信为例进行描述。请参见图2，图2是本发明实施例提供的一种通信系统的架构图。具体的，如图2所示，该通信系统中包括基站和至少一个用户设备(图中仅示出用户设备1、用户设备2和用户设备3)，该基站和用户设备之间通过无线信号进行通信，该无线信号由包括多个符号的子帧组成，该符号可作为无线信号的基本单位。通常用于通信的无线信号是以某种调制方式实现发送和接收的，根据无线信号的调制方式，可以分为单载波调制(如时分多址、码分多址)和多载波调制(如频分多址)两大类。
应理解，图2所示的通信系统架构中仅示出了一个基站(孤立基站)的情形，但本发明实施例并不限于此。该通信系统中还可包括除该基站以外的在相同的时频资源上传输业务的近邻基站和用户设备，每个基站的覆盖范围内还可以包括其他数量的用户设备。进一步可选的，图2中基站和用户设备所在的无线通信系统还可以包括移动管理实体等其他网络实体，本发明实施例不做限定。
进一步的，请一并参见图3a和图3b，图3a为图2所示的通信系统中的一种基站的结构示意图，图3b为图2所示的通信系统中的一种用户设备的结构示意图。如图3a所示，基站可以包括天线阵列、双工器、发射机(transmitter，简称为“TX”)、接收机(receiver，简称为“RX”)(TX和RX可以统称为收发机TRX)、以及基带处理部分。其中，双工器用于实现天线阵列，既可用于发送信号，又可用于接收信号。TX用于实现射频信号和基带信号之间的转换，通常TX可以包括功率放大器(power amplifier，简称为“PA”)、数模转换器(digital to analog converter，简称为“DAC”)和变频器，PA一般工作在一定的线性范围内，当输入的信号幅度变换太大时，会使得PA工作到非线性区间，降低PA的效率。通常RX可以包括低噪声放大器(low noise amplifier，简称为“LNA”)、模数转换器(analog to digital converter，简称为“ADC”)和变频器。 基带处理部分用于实现所发送或接收的信号的处理，比如层映射、预编码、调制/解调、编码/编译等，并且对于物理控制信道、物理数据信道、物理广播信道、参考信号等进行分别的处理。进一步的，基站还可以包括控制部分，用于进行多用户调度和资源分配、导频调度、用户物理层参数配置等。
如图3b所示，图3b为图2所示的通信系统中的一种用户设备的结构示意图。用户设备可以包括天线、双工器、TX和RX(TX和RX可以统称为收发机TRX)，以及基带处理部分。如图3b所示，用户设备具有单天线。应理解，用户设备也可以具有多天线(即天线阵列)。其中，双工器使天线阵列实现既可用于发送信号，又可用于接收信号。TX用于实现射频信号和基带信号之间的转换，通常TX可以包括PA、DAC和变频器，UE侧由于是电池供电，其对PA的功放效率更为敏感，通常RX可以包括LNA、ADC和变频器。基带处理部分用于实现所发送或接收的信号的处理，比如，层映射、预编码、调制/解调、编码/译码等，并且对于物理控制信道、物理数据信道、物理广播信道、参考信号等进行分别的处理。进一步的，用户设备还可以包括控制部分，用于请求上行物理资源、计算下行信道对应的信道状态信息(channel state information，简称为“CSI”)、判断下行数据包是否接收成功等。
需要说明的是，本发明实施例的技术方案可具体应用于上述的基带处理部分。
应理解，在通信系统中具有硬件切换时延导致不连续发送或接收时，则需为系统预留硬件切换保护间隔，所述硬件切换包括但不限双工器切换、天线阵列形成的波束切换等，所述天线阵列的波束切换包括天线阵列形成的模拟波束切换和混合波束切换。进一步的，请参见图4，图4是本发明实施例提供的一种混合波束成形结构示意图，具体可设置于无线网络设备中。如图4所示，基带处理部分完成一般的基带数字信号处理，包括CRC校验、编码、调制、加扰和数字波束成形中的一种或多于一种；基带处理后的数字信号送入发射射频(Radio Frequency，简称为“RF”)链路(图中仅画出两个射频链路，在实际应用中，可以包含一个至多个射频链路)，发射射频链路完成上采样、发射成形滤波、削波、模拟数字转换等功能；射频处理后的模拟信号被送到多个功放、移相器、天线单元中，用来进行模拟波束成形；基带处理部分通过控制射频移 相器的相位，即可实现具有一定指向性的信号的发送。所述指向性指的是电磁波能量的传播指向性，这种由多个模拟移相器合成的具有指向性的信号称为模拟波束。射频移相器一般是通过延迟线或者PIN二极管实现的，在相位调整时需要消耗一定时间，因此在进行通信协议设计时，需要考虑波束切换时间的影响。由此，假设无线网络设备如基站当前使用的波束分别为波束1和波束6，则在进行模拟波束切换时，可将该波束1切换至波束2-4中任一个，将波束6切换至波束5、7、8中任一个。其中，该基带处理部分与图3a中的基带处理模块相对应，该RF、功放、移相器可设置于图3a中的发射机中，每个RF链路对应一组波束。
在实际应用中，系统不需要在所有符号中都进行硬件切换，一般在每个子帧或者每个无线帧(以LTE系统为例，一个无线帧包括10个子帧)中存在一个或几个硬件切换的位置。且不同的基站小区可能对应不同的硬件切换时间点。比如，由于不同基站的硬件参数和配置可能不同，这就使得不同基站进行硬件切换的时间不同；不同基站可能配置有不同的天线数目，覆盖不同的范围，这就使得不同基站中波束的数目可能不同，从而该硬件切换的数目及切换位置不同。因此，每个基站可独立的对需要传输的数据符号进行保护带配置。
本发明实施例公开了一种数据符号传输方法、无线网络设备及系统，能够提升资源利用率，增加系统容量。以下分别详细说明。
请参见图5，是本发明实施例的一种无线网络设备的结构示意图。具体的，如图5所示，本发明实施例的所述无线网络设备可包括信息确定单元11、配置单元12以及发送单元13。其中，
所述信息确定单元11，用于确定当前子帧中需要进行硬件切换的位置以及所述硬件切换的切换时间。
需要说明的是，本发明实施例的所述无线网络设备与上述的无线网络设备相对应。在本发明实施例中，以基站和用户设备之间的通信为例进行描述，即该无线网络设备为基站。
具体实施例中，基站和用户设备之间可基于包括多个符号的子帧进行通信。基站在向用户设备发送子帧之前，可通过信息确定单元11检测当前是否需要进行硬件切换如模拟波束切换，若需要进行硬件切换，则可进一步确定出 该子帧中该硬件切换的位置，以及确定出该硬件切换所需的时间即切换时间，以基于该切换时间进行数据符号保护带的选择和配置。
所述配置单元12，用于根据所述切换时间为所述位置对应的第一数据符号配置第一保护带，所述第一保护带的长度大于或等于所述切换时间。
具体的，在信息确定单元11确定出当前子帧中硬件切换的位置及切换时间之后，配置单元12即可根据该切换时间为所述位置对应的第一数据符号配置第一保护带，比如将该切换位置处的数据符号的保护带即第一保护带配置为长度不低于该切换时间的保护带。
可选的，所述第一保护带可包括插零前缀(Zero Period，简称为“ZP”)或插零后缀(Zero Tail，简称为“ZT”)。
所述配置单元12，还用于将所述子帧中除所述第一数据符号以外的数据符号作为第二数据符号，并为所述第二数据符号配置第二保护带。
在硬件切换以外的位置，即对于该子帧中除该第一数据符号以外的数据符号，配置单元12还可为该第二数据符号配置第二保护带，如循环前缀CP。其中，该第二数据符号以及第二保护带的长度可分别预先配置得到。
所述发送单元13，用于向另一无线网络设备发送所述子帧。
以基站和用户设备之间的通信为例进行描述，即该另一无线网络设备为用户设备。
进一步的，在本发明实施例中，所述发送单元13可具体用于：
以时分复用的方式向另一无线网络设备发送所述第一数据符号、所述第一保护带、所述第二数据符号及所述第二保护带，所述第一数据符号和所述第二数据符号包括需要传输的数据。
可选的，在本发明实施例中，
所述发送单元13，还用于向所述另一无线网络设备发送通知消息，所述通知消息用于通知所述另一无线网络设备所述子帧的配置信息，所述配置信息包括所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息中的一项或多项。
其中，所述通知消息可以是所述基站通过广播信道或者控制信道发送给所述用户设备的，以使所述用户设备接收包括所述子帧的配置信息的通知消息， 并根据所述配置信息接收所述子帧。具体的，该通知消息为基站小区中所有用户都能够收到的消息，包括但不限于同步信道、物理广播消息、物理公共控制信道指示的系统广播消息等等。发送单元13具体可在信息确定单元11确定当前子帧中硬件切换的位置及切换时间之后向用户设备发送该通知消息；或者，发送单元13可在配置单元12为该子帧配置得到该第一保护带和第二保护带即完成子帧的保护带配置之后再向用户设备发送该通知消息；或者，发送单元13还可分别在信息确定单元11确定当前子帧中硬件切换的位置及切换时间之后向用户设备发送包括需要进行硬件切换的第一数据符号的位置信息的通知消息，并在配置单元12完成子帧的保护带配置之后向用户设备发送包括该第一保护带的位置及长度等信息的通知消息，等等，本发明实施例不做限定。
可选的，所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息还可以是所述基站与所述用户设备预先协商确定出的。比如该基站和用户设备可根据预设的协商算法确定出该第一数据符号和第一保护带的位置及长度信息；或者该基站和用户设备中预先配置有该位置及长度信息。使得基站基于该位置和长度信息进行保护带配置和发送，即在该协商的位置为第一数据符号配置协商长度的第一保护带，为子帧的其余符号即第二数据符号配置第二保护带；用户设备基于该位置和长度信息进行数据接收，即在该协商的位置接收第一数据符号及第一保护带，并接收子帧的其余位置的第二数据符号及第二保护带。
具体的，该数据符号及其对应的保护带可统称为符号，也即，该第一数据符号和第一保护带可作为第一符号，该第二数据符号和第二保护带可作为第二符号。一般情况下，该第一符号与该第二符号的长度相同，且该子帧中的第二数据符号的长度均相同。发送单元13在进行子帧的发送时，对于配置ZP的第一符号，先发送ZP即第一保护带，再发送数据部分即第一数据符号；对于配置ZT的第一符号，则先发送数据部分，再发送ZT。用户设备在接收有ZP的第一符号时，则采用ZP均衡法进行频域均衡，在接收有CP的第二符号时，则采用CP均衡方法进行频域均衡，从而提升系统均衡性能。其中，用户设备通过CP均衡法进行频域均衡时，可以直接将CP丢弃，只处理数据部分；通过ZP(或ZT)均衡法进行频域均衡时，则不能将ZP(或ZT)直接丢弃，需 要将符号后的部分ZP(或ZT)叠加到前面符号中，以构成循环符号，将线性卷积系统变为循环卷积系统，实现频域均衡，此处不再赘述。
需要说明的是，在某些情况下，符号间的长度可能不同。由于子帧的长度被配置为固定长度，因此，可在配置单元12完成第一保护带的配置和第二保护带的配置之后，进一步检测该保护带配置后的子帧(一个子帧包括多个符号，每个符号可分为数据符号和保护带)的总长度是否达到该固定长度。若未达到该固定长度，则可控制增加该子帧中的预设位置如第一个符号的保护带的长度或最后一个符号的保护带长度，使得该子帧的总长度达到该固定长度；类似地，若该子帧的总长度超过该固定长度，则可控制缩短该子帧中的预设位置的保护带的长度，使得该子帧的总长度缩短到该固定长度。例如，LTE正常CP时一个时隙(一个子帧分为两个时隙)包括7个OFDM符号，第一个符号的保护带如CP长度被配置为长于其余6个OFDM符号的保护带，以确保一个时隙的长度为固定长度0.5ms。
举例来说，以第一保护带为ZP，第二保护带为CP为例，请参见图6a，是本发明实施例提供的一种子帧结构图。如图6a所示，一个子帧中可能包括上行部分和下行部分，上行部分和下行部分间配置有上下行切换保护时间(即图中的GP)，该上行部分包括N个符号，下行部分包括M个符号。在该N个符号和/或M个符号中可能存在需要进行硬件切换的位置，如图中下行部分ZP处即为需要进行硬件切换的位置。其中，N、M大于等于1。
其中，图中所示为时分双工(Time Division Duplex，简称为“TDD”)系统，且上下行切换保护时间长度大于符号长度(如符号n的长度：数据长度加上CP长度)。应理解，在其他可选的实施例中，该通信系统还可以为频分双工(Frequency Division Duplex，简称为“FDD”)系统。而且，若该上下行切换保护时间长度小于或等于数据长度加上CP长度，仍然可以按照本实施例进行处理。
进一步的，在本发明实施例中，所述无线网络设备还可包括(图中未示出)：
比较单元14，用于将所述第一保护带的长度与所述第二保护带的长度进行比较，其中，所述第二保护带的长度是预先配置得到的；
所述配置单元12，还用于在所述比较单元14的比较结果为所述第一保护 带的长度小于所述第二保护带的长度时，将所述第一保护带的长度配置为与所述第二保护带的长度相同。
具体实施例中，基站可基于该硬件切换的位置及切换时间进行保护带设计。具体的，比较单元14可通过获取该硬件切换位置处配置的第一保护带的长度，以及获取非硬件切换位置处的第二保护带的长度，并将该第一保护带的长度与该第二保护带的长度进行比较。当该第一保护带的长度小于该第二保护带的长度时，配置单元12即可将该第一保护带的长度配置为与该第二保护带的长度相同，比如通过对第一保护带进行补零处理实现将该第一保护带的长度配置为与该第二保护带的长度相同。或者，配置单元12还可根据该第二保护带与第一保护带的长度差，为该第一数据符号配置长度与该长度差相同的第二保护带，则为该第一数据符号配置的保护带包括该与切换时间对应的第一保护带以及与该长度差相同的第二保护带。
具体的，进一步的，请参见图6b，图6b是本发明实施例提供的一种硬件切换场景图，结合图6a，以第一保护带为ZP，第二保护带为CP为例，在该图6a中下行部分ZP处即为需要进行硬件切换的位置，假设子帧中的符号n和符号n+1之间需要进行硬件切换如模拟波束切换，且该符号n+1即对应上述的第一符号，该符号n即对应上述的第二符号，每个符号包括数据部分(数据符号)和保护带部分，并假设该符号n+1与该符号n的总长度相同，记为T_symb。此外，将长度等于该硬件切换的切换时间的第一保护带即ZP的长度记为T_GP，将为第二数据符号配置的第二保护带即正常CP的长度记为T_CP(即不进行硬件切换时，符号应该发送的CP的长度)，以便于描述。如图6b所示，在信息确定单元11检测到该需要进行硬件切换的位置如符号n+1处，且在比较单元14检测到T_GP小于或等于T_CP时，配置单元12可在无波束切换的符号即第二符号处(包括符号n)，配置正常CP；在具有波束切换的符号处，CP前面部分被用于模拟波束切换，等价于配置T_GP长度的ZP(T_CP-T_GP即可称为剩余CP)。可选的，该配置单元12还可以将ZP长度配置为正常CP长度，比如通过对ZP进行补零处理，将ZP长度配置为与正常CP长度相同。也就是说，发送单元13在有模拟波束切换的符号如正交频分多址(Orthogonal Frequency Division Multiple Access，简称为“OFDMA”)符号 处发送ZP-OFDM，其他符号则发送CP-OFDM。用户设备在接收有正常CP的符号时，则采用CP方法进行频域均衡，在接收有ZP的符号时，则采用ZP法进行频域均衡，从而提升系统均衡性能。
进一步的，若T_GP小于或等于T_CP时，为该第一数据符号配置的保护带即符号n+1中的保护带包括ZP(第一保护带)和剩余CP，则用户设备在接收该符号时，可直接把将该ZP和CP去掉，直接进行频域均衡(即用户设备相当于把ZP当做CP处理)；或者，用户设备还可以通过估计出基站和用户设备之间的信道时延扩展，按照信道时延扩展、剩余CP之间的关系，进行CP均衡或者ZP均衡。如在信道时延扩展小于剩余CP长度时，进行CP均衡，在剩余CP长度小于信道时延扩展时将信道时延扩展减去剩余CP的差作为ZP系统中“信道时延扩展长度”，进行ZP均衡。
进一步的，在本发明实施例中，
所述比较单元14，还用于将所述第一保护带的长度与第二符号的长度进行比较，所述第二符号包括所述第二数据符号和所述第二保护带；
所述无线网络设备还包括：
确定单元15，用于确定所述子帧所处系统是否为单载波系统。示例的，可以在所述比较单元14的比较结果为所述第一保护带的长度大于所述第二保护带的长度，且所述第一保护带的长度小于所述第二符号的长度时，进行确定；也可以在其他时间点进行确定，在此不予限定。
所述配置单元12，还用于在所述确定单元15确定出所述子帧所处系统为单载波系统且比较单元14的比较结果为所述第一保护带的长度大于所述第二保护带的长度，且所述第一保护带的长度小于所述第二符号的长度时，将所述第二符号的长度与所述第一保护带的长度的差作为所述第一数据符号中需要传输的数据的长度。
具体的，当比较单元14检测到T_CP<T_GP<T_symb时，确定单元15还可进一步确定当前通信系统为单载波系统还是多载波系统。如图6c所示，若当前通信系统为单载波系统，则配置单元12可在无波束切换的符号即该符号n处配置正常CP，在有波束切换的符号即该符号n+1处，将T_GP处都填0或进行其他处理(使得用户设备收不到T_GP这部分信息，或者使得用户设 备认为这部分信息是无效的而不进行接收，用户设备需要知道该第一保护带的长度)，将第二数据符号与第二保护带的长度和(符号n的长度)即T_symb与第一保护带即T_GP的差作为所述第一数据符号的长度，且该第一数据符号长度均可用于传输数据，发送单元13发送的有效数据长度缩短。用户设备在接收正常CP时，采用CP方法进行频域均衡，在接收有ZP的符号时，采用ZP法进行频域均衡，从而提升系统均衡性能。
进一步的，在本发明实施例中，所述无线网络设备还可包括(图中未示出)：
映射单元16，用于在所述确定单元15确定出所述子帧所处系统不为单载波系统，且所述第一保护带的长度大于所述第二保护带的长度，且所述第一保护带的长度小于所述第二符号的长度时，计算所述第一保护带的长度与所述第二保护带的长度的差值，根据所述差值以及所述第二数据符号的长度确定需要间隔的子载波数目，并按照所述子载波数目进行频域分布式资源映射，以使所述用户设备对所述第一数据符号进行解调；
所述配置单元12，还用于将所述第二符号的长度与所述第一保护带的长度的差作为所述第一数据符号的长度，并将所述第一数据符号中的目标长度作为需要传输的数据的长度，所述目标长度为所述第二数据符号的长度与所述子载波数目加一的商。
其中，所述子帧所处系统不为单载波系统时即可确定该子帧处于多载波系统。该所述多载波系统包括但不限OFDM系统、经过预编码后的OFDM系统(discrete fourier transform-spread OFDM，简称“DFT-s-OFDM”)等。所述分布式资源映射是指每隔一定的间隔子载波(即上述的子载波数目)进行一个子载波的数据映射，在该间隔子载波即该子载波数目对应的子载波上不发送数据或者填零。
示例的，所述映射单元16根据所述差值以及所述第二数据符号的长度确定需要间隔的子载波数目的具体方式为：将所述差值与所述第二数据符号的长度的商值和(k-1)/k、k/(k+1)进行比较；若所述商值小于或等于(k-1)/k，则确定需要间隔的子载波数目为k-1；若所述商值大于(k-1)/k、且小于k/(k+1)，则确定需要间隔的子载波数目为k。其中，k为大于等于2的整数。
进一步的，当比较单元14检测到T_CP<T_GP<T_symb，且确定单元15 确定出当前通信系统不为单载波系统即为多载波系统时，如图6d所示，配置单元12可在无波束切换的符号n处配置正常CP，在有波束切换的符号n+1处，映射单元16根据第一保护带的长度与所述第二保护带的长度的差值即(T_GP-T_CP)和正常数据长度T_data确定出需要间隔的子载波数目来进行分布式资源映射，这样等效为有效信息在时域进行重复发送，配置单元12在符号n处配置正常CP，在该符号n+1处，将T_GP处都填0或进行其他处理(使得用户设备收不到T_GP这部分信息，或者使得用户设备认为这部分信息是无效的而不进行接收，用户设备需要知道该第一保护带的长度)，以确保用户设备对该符号n+1成功解调，发送单元13发送的有效数据长度缩短(该有效数据长度即为该目标长度，即T_data与该需要间隔的子载波数目加一的商)。进一步的，请结合图6e，是本发明实施例提供的一种频域分布式映射示意图，假设(T_GP-T_CP)<T_data/2即第一保护带的长度与第二保护带的长度的差值与第二数据符号的长度的商值(T_GP-T_CP)/T_data<1/2，即k＝2时，则映射单元16可确定出需要间隔的子载波数目为1，则可控制进行1/2长度映射，即每隔一个子载波进行频域映射，并将其余子载波进行填0处理，发送单元13在符号n+1发送的有效数据为(T_data-T_CP’-(T_GP-T_CP))即T_data/2，其中，T_CP’＝T_data/2-(T_GP-T_CP)。用户设备在接收该子帧时，则可将剩余部分的数据即T_CP’作为符号n+1数据部分的等效CP进行解调，比如用户设备可直接把将该ZP和CP去掉，直接进行频域均衡，或者还可通过估计出基站和用户设备之间的信道时延扩展，进行CP均衡或者ZP均衡，此处不再赘述。用户设备接收的有效数据为(T_data-T_CP’-(T_GP-T_CP))部分，即T_data/2。
应理解，在实际应用场景中，还可以根据需要的模拟波束切换时间，进行其他分布式映射的选择，比如映射单元16可在T_data*3/4>(T_GP-T_CP)>2*T_data/3时，每隔3个子载波进行频域资源映射，发送单元13在符号n+1发送的有效数据为T_data/4。
又例如，以第一保护带为ZT，第二保护带为CP为例，请参见图7a，是本发明实施例提供的另一种子帧结构图。如图7a所示，一个子帧中可能包括上行部分和下行部分，上行部分和下行部分间配置有上下行切换保护时间(即 图中的GP)，该上行部分包括N个符号，下行部分包括M个符号。在该N个符号和/或M个符号中可能存在需要进行硬件切换的位置，如图中下行部分ZT处即为需要进行硬件切换的位置。其中，N、M大于等于1。同样假设子帧中的符号n和符号n+1之间需要进行硬件切换如模拟波束切换(其中，n为自然数)，且该符号n即对应上述的第一符号，该符号n+1即对应上述的第二符号，每个符号包括数据部分(数据符号)和保护带部分，并假设每个符号的总长度相同，记为T_symb。此外，将长度等于该硬件切换的切换时间的第一保护带即ZT的长度记为T_GP，将为第二数据符号配置的第二保护带即正常CP的长度记为T_CP。如图7b所示，当信息确定单元11检测到该需要进行硬件切换的位置如符号n处，且在比较单元14检测到T_GP小于或等于T_CP时，配置单元12可在无波束切换的符号即第二符号(包括符号n+1)处，配置正常CP；在具有波束切换的符号n处，CP前面部分被用于模拟波束切换，等价于配置T_GP长度的ZT，或者该配置单元12还可以将ZT长度配置为T_CP，此处不再赘述。用户设备在接收有ZT的符号时，则采用ZT法进行频域均衡，在接收有正常CP的符号时，则采用CP方法进行频域均衡，从而提升系统均衡性能。
进一步的，当比较单元14检测到T_CP<T_GP<T_symb时，确定单元15还可进一步确定当前通信系统为单载波系统还是多载波系统。如图7c所示，若当前通信系统为单载波系统，则配置单元12可在无波束切换的符号即该符号n+1处配置正常CP，在有波束切换的符号即该符号n处，将T_GP处都填0，将(T_symb-T_GP)作为所述第一数据符号的长度，且该(T_symb-T_GP)均可用于传输数据，发送单元13发送的有效数据长度缩短。用户设备在接收正常CP时，采用CP方法进行频域均衡，在接收有ZT的符号时，采用ZP法进行频域均衡，从而提升系统均衡性能。当比较单元14检测到T_CP<T_GP<T_symb，且确定单元15确定出当前通信系统为多载波系统时，如图7d所示，配置单元12可在无波束切换的符号n+1处配置正常CP，在有波束切换的符号n处，映射单元16根据第一保护带的长度与所述第二保护带的长度的差值即(T_GP-T_CP)和正常数据长度T_data确定出需要间隔的子载波数目来进行分布式资源映射。比如在(T_GP-T_CP)<T_data/2时，映射单元16可控制每隔 一个子载波进行频域资源映射，这样等效为有效信息在时域进行重复发送，则发送单元13发送的有效数据为(T_data-T_CP’-(T_GP-T_CP))部分即T_data/2。在实际应用场景中，基站还可以根据需要的模拟波束切换时间，进行其他分布式映射的选择，此处不再赘述。
在本发明实施例中，基站能够根据硬件切换的位置及所需的切换时间来动态配置本小区符号的保护带，通过在硬件切换位置处对发送符号进行特殊处理，而无需预留额外的GP，从而降低了为硬件切换位置所需提供的空口预留开销，使得有效提升了空口资源利用率，增加了可以使用的空口资源，并提升了系统容量。同时，使得不同基站小区可以实现保护带的自适应配置，则降低了统一设计帧结构的复杂度。
请参见图8，图8是本发明实施例的一种数据符号传输方法的流程示意图。具体的，如图8所示，所述方法包括以下步骤：
101、第一无线网络设备确定当前子帧中需要进行硬件切换的位置以及所述硬件切换的切换时间。
102、所述第一无线网络设备根据所述切换时间为所述位置对应的第一数据符号配置第一保护带。
其中，所述第一保护带的长度大于或等于所述切换时间。
103、所述第一无线网络设备将所述子帧中除所述第一数据符号以外的数据符号作为第二数据符号，并为所述第二数据符号配置第二保护带。
可选的，所述第一保护带可包括插零前缀ZP，所述第二保护带为循环前缀CP。或者，所述第一保护带可包括插零后缀ZT，所述第二保护带为循环前缀CP。
可选的，第一无线网络设备可将所述第一保护带的长度与所述第二保护带的长度进行比较；若所述第一保护带的长度小于所述第二保护带的长度时，将所述第一保护带的长度配置为与所述第二保护带的长度相同。其中，所述第二保护带的长度可以是预先配置得到的。
可选的，该第一无线网络设备还可分别将所述第一保护带的长度与所述第二保护带的长度及第二符号的长度进行比较，所述第二符号包括所述第二数据符号和所述第二保护带；确定所述子帧所处系统是否为单载波系统；若所述子 帧所处系统为单载波系统，且所述第一保护带的长度大于所述第二保护带的长度，且所述第一保护带的长度小于所述第二符号的长度，则将所述第二符号的长度与所述第一保护带的长度的差作为所述第一数据符号中需要传输的数据的长度。
进一步可选的，该第一无线网络设备还可在所述子帧所处系统不为单载波系统，且所述第一保护带的长度大于所述第二保护带的长度，且所述第一保护带的长度小于所述第二符号的长度时，计算所述第一保护带的长度与所述第二保护带的长度的差值，根据所述差值以及所述第二数据符号的长度确定需要间隔的子载波数目，并按照所述子载波数目进行频域分布式资源映射，以使所述第二无线网络设备对所述第一数据符号进行解调；将所述第二符号的长度与所述第一保护带的长度的差作为所述第一数据符号的长度，并将所述第一数据符号中的目标长度作为需要传输的数据的长度，其中，所述目标长度为所述第二数据符号的长度与所述子载波数目加一的商。
可选的，该第一无线网络设备在完成对当前子帧的保护带配置后，还可向所述第二无线网络设备发送通知消息，所述通知消息用于通知所述第二无线网络设备所述子帧的配置信息，所述配置信息包括所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息中的任一项或多项。使得用户设备能够基于该子帧配置信息进行数据接收。
其中，所述通知消息可以是第一无线网络设备如基站通过广播信道或者控制信道发送给所述第二无线网络设备如用户设备的。具体的，该通知消息为基站小区中所有用户都能够收到的消息，包括但不限于同步信道、物理广播消息、物理公共控制信道指示的系统广播消息等等。
可选的，所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息还可以是与所述用户设备预先协商确定出的。
104、所述第一无线网络设备向第二无线网络设备发送所述子帧。
具体的，所述向第二无线网络设备发送所述子帧，可以具体为：以时分复用的方式向所述用户设备发送所述第一数据符号、所述第一保护带、所述第二数据符号及所述第二保护带，所述第一数据符号和所述第二数据符号包括需要传输的数据。
本发明实施例与图5的设备实施例基于同一构思，该第一无线网络设备与图5对应实施例中的无线网络设备相对应，该第二无线网络设备与该图5对应实施例中的另一无线网络设备相对应，其带来的技术效果也相同，具体实施方式可参照图5的实施例的描述，此处不再赘述。
请参见图9，图9是本发明实施例提供的一种数据符号传输系统的结构示意图，具体的，如图9所示，本发明实施例的所述数据符号传输系统包括：第一无线网络设备1和第二无线网络设备2；其中，
所述第一无线网络设备1，用于确定当前子帧中需要进行硬件切换的位置以及所述硬件切换的切换时间；根据所述切换时间为所述位置对应的第一数据符号配置第一保护带，所述第一保护带的长度大于或等于所述切换时间；将所述子帧中除所述第一数据符号以外的数据符号作为第二数据符号，并为所述第二数据符号配置第二保护带；向所述第二无线网络设备2发送所述子帧；
所述第二无线网络设备2，用于接收所述第一无线网络设备1发送的子帧，所述子帧包括配置有第一保护带的第一符号以及配置有第二保护带的第二符号；采用与所述第一保护带对应的频域均衡技术对所述对第一符号进行频域均衡，并采用与所述第二保护带对应的频域均衡技术对所述对第二符号进行频域均衡。
其中，所述第一无线网络设备可以是基站，也可以是用户设备；所述第二无线网络设备可以是用户设备，也可以是基站。示例的，本发明实施例中涉及的通信既可以是基站和用户设备之间的，也可以是基站和基站之间的，比如宏基站和小基站之间的，还可以是用户设备和用户设备之间的，比如D2D网络中的通信。
其中，所述第一符号包括第一保护带和第一数据符号，所述第二符号还包括第二保护带和第二数据符号，所述第一数据符号和所述第二数据符号包括需要传输的数据。可选的，所述第一保护带可以为插零前缀ZP或插零后缀ZT，所述第二保护带可以为循环前缀CP。
可选的，所述第二无线网络设备采用与所述第一保护带对应的频域均衡技术对所述对第一符号进行频域均衡，可以具体为：所述第二无线网络设备确定所述子帧所处载波系统是否为单载波系统；若为单载波系统，则所述第二无线 网络设备采用与所述第一保护带对应的频域均衡技术对所述对第一符号进行频域均衡；若不为单载波系统，则所述第二无线网络设备采用与所述第二保护带对应的频域均衡技术对所述对第一符号进行频域均衡。
可选的，所述系统还包括：
所述第一无线网络设备1向所述第二无线网络设备2发送包括所述子帧的配置信息的通知消息，其中，所述配置信息包括所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息中的一项或多项；
所述第二无线网络设备2接收所述第一无线网络设备1发送的包括所述子帧的配置信息的通知消息，并根据所述配置信息接收所述子帧。
可选的，所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息还可以是所述第一无线网络设备与所述第二无线网络设备预先协商确定出的。
具体的，第一无线网络设备如基站在进行子帧发送时，对于配置ZP的第一符号(包括ZP和数据部分)，先发送ZP即第一保护带，再发送数据部分即第一数据符号；对于配置ZT的第一符号(包括ZT和数据部分)，则先发送数据部分，再发送ZT。第二无线网络设备如用户设备在接收有ZP的第一符号时，则采用ZP均衡法进行频域均衡，在接收有CP的第二符号时，则采用CP均衡方法进行频域均衡，从而提升系统均衡性能。其中，用户设备通过CP均衡法进行频域均衡时，可以直接将CP丢弃，只处理数据部分；通过ZP(或ZT)均衡法进行频域均衡时，则不可将符号后的部分ZP(或ZT)叠加到前面符号中，以构成循环符号，将线性卷积系统变为循环卷积系统，实现频域均衡，此处不再赘述。
其中，所述第一无线网络设备1可用于执行图8所示的数据符号传输方法，并与图5的实施例中的无线网络设备相对应。关于本实施例涉及的术语的含义以及举例，可以参考图5及图8对应的实施例，此处不再赘述。
在本发明实施例中，无线网络设备如基站能够根据硬件切换的位置及所需的切换时间来动态配置本小区符号的保护带，通过在硬件切换位置处对发送符号进行特殊处理，而无需预留额外的GP，从而降低了为硬件切换位置所需提供的空口预留开销，使得有效提升了空口资源利用率，增加了可以使用的空口 资源，并提升了系统容量。同时，使得不同基站小区可以实现保护带的自适应配置，则降低了统一设计帧结构的复杂度。
请参见图10，是本发明实施例提供的另一种无线网络设备的结构示意图，具体的，如图10所示，本发明实施例的所述无线网络设备包括：通信接口300、存储器200和处理器100，所述处理器100分别与所述通信接口300及所述存储器200连接。所述存储器200可以是高速RAM存储器，也可以是非不稳定的存储器(non-volatile memory)，例如至少一个磁盘存储器。所述通信接口300、存储器200以及处理器100之间可以通过总线进行数据连接，也可以通过其他方式数据连接。本实施例中以总线连接进行说明。具体的，本发明实施例中的所述无线网络设备可与上述图5对应的无线网络设备以及图9对应实施例中的第一无线网络设备相对应，并可具体为通信网络中的基站，或者是用户设备，具体请参照图5-10对应实施例的相关描述。其中，
所述存储器200用于存储驱动软件；
所述处理器100从所述存储器读取所述驱动软件并在所述驱动软件的作用下执行：
确定当前子帧中需要进行硬件切换的位置以及所述硬件切换的切换时间；
根据所述切换时间为所述位置对应的第一数据符号配置第一保护带，所述第一保护带的长度大于或等于所述切换时间；
将所述子帧中除所述第一数据符号以外的数据符号作为第二数据符号，并为所述第二数据符号配置第二保护带；
通过所述通信接口300向另一无线网络设备发送所述子帧。
可选的，所述处理器100在执行所述向另一无线网络设备发送所述子帧，具体执行以下步骤：
通过所述通信接口300并以时分复用的方式向另一无线网络设备发送所述第一数据符号、所述第一保护带、所述第二数据符号及所述第二保护带，所述第一数据符号和所述第二数据符号包括需要传输的数据。
可选的，所述处理器100还用于从所述存储器读取所述驱动软件并在所述驱动软件的作用下执行：
将所述第一保护带的长度与所述第二保护带的长度进行比较，其中，所述 第二保护带的长度是预先配置得到的；
若所述第一保护带的长度小于所述第二保护带的长度时，将所述第一保护带的长度配置为与所述第二保护带的长度相同。
可选的，所述处理器100还用于从所述存储器读取所述驱动软件并在所述驱动软件的作用下执行：
分别将所述第一保护带的长度与所述第二保护带的长度及第二符号的长度进行比较，所述第二符号包括所述第二数据符号和所述第二保护带；
确定所述子帧所处系统是否为单载波系统；
若所述子帧所处系统为单载波系统，且所述第一保护带的长度大于所述第二保护带的长度，且所述第一保护带的长度小于所述第二符号的长度，则将所述第二符号的长度与所述第一保护带的长度的差作为所述第一数据符号中需要传输的数据的长度。
可选的，所述处理器100还用于从所述存储器读取所述驱动软件并在所述驱动软件的作用下执行：
分别将所述第一保护带的长度与所述第二保护带的长度及第二符号的长度进行比较，所述第二符号包括所述第二数据符号和所述第二保护带；
确定所述子帧所处系统是否为单载波系统；
若所述子帧所处系统不为单载波系统，且所述第一保护带的长度大于所述第二保护带的长度，且所述第一保护带的长度小于所述第二符号的长度，则计算所述第一保护带的长度与所述第二保护带的长度的差值，根据所述差值以及所述第二数据符号的长度确定需要间隔的子载波数目，并按照所述子载波数目进行频域分布式资源映射，以使所述另一无线网络设备对所述第一数据符号进行解调；
将所述第二符号的长度与所述第一保护带的长度的差作为所述第一数据符号的长度，并将所述第一数据符号中的目标长度作为需要传输的数据的长度，其中，所述目标长度为所述第二数据符号的长度与所述子载波数目加一的商。
可选的，所述处理器100还用于从所述存储器读取所述驱动软件并在所述驱动软件的作用下执行：
通过所述通信接口300向所述另一无线网络设备发送通知消息，所述通知消息用于通知所述另一无线网络设备所述子帧的配置信息，所述配置信息包括所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息中的一项或多项。
可选的，所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息是与所述另一无线网络设备预先协商确定出的。
可选的，所述第一保护带包括插零前缀ZP，所述第二保护带包括循环前缀CP。
可选的，所述第一保护带包括插零后缀ZT，所述第二保护带包括循环前缀CP。
进一步的，请参见图11，图11是本发明实施例提供的又一种无线网络设备的结构示意图，具体的，如图11所示，本发明实施例的所述无线网络设备包括：通信接口600、存储器500和处理器400，所述处理器400分别与所述通信接口600及所述存储器500连接。所述存储器500可以是高速RAM存储器，也可以是非不稳定的存储器(non-volatile memory)，例如至少一个磁盘存储器。所述通信接口600、存储器500以及处理器400之间可以通过总线进行数据连接，也可以通过其他方式数据连接。本实施例中以总线连接进行说明。具体的，本发明实施例中的所述无线网络设备具体可参照上述图5实施例中的另一无线网络设备及图9对应实施例中的第二无线网络设备的相关描述，并可具体为通信网络中的用户设备，或者是基站。其中，
所述存储器500用于存储驱动软件；
所述处理器400从所述存储器读取所述驱动软件并在所述驱动软件的作用下执行：
通过所述通信接口600接收另一无线网络设备发送的子帧，所述子帧包括配置有第一保护带的第一符号以及配置有第二保护带的第二符号；
采用与所述第一保护带对应的频域均衡技术对所述对第一符号进行频域均衡，并采用与所述第二保护带对应的频域均衡技术对所述对第二符号进行频域均衡。
可选的，所述处理器400在执行所述采用与所述第一保护带对应的频域均 衡技术对所述对第一符号进行频域均衡，具体执行以下步骤：
确定所述子帧所处载波系统是否为单载波系统；
若为单载波系统，则采用与所述第一保护带对应的频域均衡技术对所述对第一符号进行频域均衡；
若不为单载波系统，则采用与所述第二保护带对应的频域均衡技术对所述对第一符号进行频域均衡。
其中，所述第一符号还包括第一数据符号，所述第二符号还包括第二数据符号，所述第一数据符号和所述第二数据符号包括需要传输的数据。
可选的，所述第一保护带包括插零前缀ZP，所述第二保护带包括循环前缀CP。
可选的，所述第一保护带包括插零后缀ZT，所述第二保护带包括循环前缀CP。
可选的，所述处理器400还用于执行以下步骤：
通过所述通信接口600接收所述另一无线网络设备发送的包括所述子帧的配置信息的通知消息，并根据所述配置信息接收所述子帧，其中，所述配置信息包括所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息中的一项或多项。
可选的，所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息是与所述另一无线网络设备预先协商确定出的。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
在本发明所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置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，装置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。
所述该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。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本发明各个实施例所述方法的部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
本领域技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。上述描述的装置的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (18)

  1. 一种无线网络设备，其特征在于，包括：
    信息确定单元，用于确定当前子帧中需要进行硬件切换的位置以及所述硬件切换的切换时间；
    配置单元，用于根据所述切换时间为所述位置对应的第一数据符号配置第一保护带，所述第一保护带的长度大于或等于所述切换时间；
    所述配置单元，还用于将所述子帧中除所述第一数据符号以外的数据符号作为第二数据符号，并为所述第二数据符号配置第二保护带；
    发送单元，用于向另一无线网络设备发送所述子帧。
  2. 根据权利要求1所述的无线网络设备，其特征在于，所述发送单元具体用于：
    以时分复用的方式向另一无线网络设备发送所述第一数据符号、所述第一保护带、所述第二数据符号及所述第二保护带，所述第一数据符号和所述第二数据符号包括需要传输的数据。
  3. 根据权利要求1或2所述的无线网络设备，其特征在于，所述无线网络设备还包括：
    比较单元，用于将所述第一保护带的长度与所述第二保护带的长度进行比较，其中，所述第二保护带的长度是预先配置得到的；
    所述配置单元，还用于在所述比较单元的比较结果为所述第一保护带的长度小于所述第二保护带的长度时，将所述第一保护带的长度配置为与所述第二保护带的长度相同。
  4. 根据权利要求1或2所述的无线网络设备，其特征在于，所述无线网络设备还包括：
    比较单元，用于分别将所述第一保护带的长度与所述第二保护带的长度及第二符号的长度进行比较，所述第二符号包括所述第二数据符号和所述第二保 护带；
    确定单元，用于确定所述子帧所处系统是否为单载波系统；
    所述配置单元，还用于在所述确定单元确定出所述子帧所处系统为单载波系统，且所述比较单元的比较结果为所述第一保护带的长度大于所述第二保护带的长度，且所述第一保护带的长度小于所述第二符号的长度时，将所述第二符号的长度与所述第一保护带的长度的差作为所述第一数据符号中需要传输的数据的长度。
  5. 根据权利要求1或2所述的无线网络设备，其特征在于，所述无线网络设备还包括：
    比较单元，用于分别将所述第一保护带的长度与所述第二保护带的长度及第二符号的长度进行比较，所述第二符号包括所述第二数据符号和所述第二保护带；
    确定单元，用于确定所述子帧所处系统是否为单载波系统；
    映射单元，用于在所述确定单元确定出所述子帧所处系统不为单载波系统，且所述比较单元的比较结果为所述第一保护带的长度大于所述第二保护带的长度，且所述第一保护带的长度小于所述第二符号的长度时，计算所述第一保护带的长度与所述第二保护带的长度的差值，根据所述差值以及所述第二数据符号的长度确定需要间隔的子载波数目，并按照所述子载波数目进行频域分布式资源映射；
    所述配置单元，还用于将所述第二符号的长度与所述第一保护带的长度的差作为所述第一数据符号的长度，并将所述第一数据符号中的目标长度作为需要传输的数据的长度，其中，所述目标长度为所述第二数据符号的长度与所述子载波数目加一的商。
  6. 根据权利要求1-5任一项所述的无线网络设备，其特征在于，
    所述发送单元，还用于向所述另一无线网络设备发送通知消息，所述通知消息用于通知所述另一无线网络设备所述子帧的配置信息，所述配置信息包括所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护 带的长度信息中的一项或多项。
  7. 根据权利要求1-6任一项所述的无线网络设备，其特征在于，所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息是与所述另一无线网络设备预先协商确定出的。
  8. 根据权利要求1-7任一项所述的无线网络设备，其特征在于，所述第一保护带包括插零前缀ZP，所述第二保护带包括循环前缀CP。
  9. 根据权利要求1-7任一项所述的无线网络设备，其特征在于，所述第一保护带包括插零后缀ZT，所述第二保护带包括循环前缀CP。
  10. 一种数据符号传输方法，其特征在于，包括：
    第一无线网络设备确定当前子帧中需要进行硬件切换的位置以及所述硬件切换的切换时间；
    所述第一无线网络设备根据所述切换时间为所述位置对应的第一数据符号配置第一保护带，所述第一保护带的长度大于或等于所述切换时间；
    所述第一无线网络设备将所述子帧中除所述第一数据符号以外的数据符号作为第二数据符号，并为所述第二数据符号配置第二保护带；
    所述第一无线网络设备向第二无线网络设备发送所述子帧。
  11. 根据权利要求10所述的方法，其特征在于，所述第一无线网络设备向第二无线网络设备发送所述子帧，包括：
    所述第一无线网络设备以时分复用的方式向所述第二无线网络设备发送所述第一数据符号、所述第一保护带、所述第二数据符号及所述第二保护带，所述第一数据符号和所述第二数据符号包括需要传输的数据。
  12. 根据权利要求10或11所述的方法，其特征在于，在所述第一无线网络设备向第二无线网络设备发送所述子帧之前，所述方法还包括：
    所述第一无线网络设备将所述第一保护带的长度与所述第二保护带的长度进行比较，其中，所述第二保护带的长度是预先配置得到的；
    若所述第一保护带的长度小于所述第二保护带的长度时，所述第一无线网络设备将所述第一保护带的长度配置为与所述第二保护带的长度相同。
  13. 根据权利要求10或11所述的方法，其特征在于，在所述第一无线网络设备向第二无线网络设备发送所述子帧之前，所述方法还包括：
    所述第一无线网络设备分别将所述第一保护带的长度与所述第二保护带的长度及第二符号的长度进行比较，所述第二符号包括所述第二数据符号和所述第二保护带；
    所述第一无线网络设备确定所述子帧所处系统是否为单载波系统；
    若所述子帧所处系统为单载波系统，且所述第一保护带的长度大于所述第二保护带的长度，且所述第一保护带的长度小于所述第二符号的长度，则所述第一无线网络设备将所述第二符号的长度与所述第一保护带的长度的差作为所述第一数据符号中需要传输的数据的长度。
  14. 根据权利要求10或11所述的方法，其特征在于，在所述第一无线网络设备向第二无线网络设备发送所述子帧之前，所述方法还包括：
    所述第一无线网络设备分别将所述第一保护带的长度与所述第二保护带的长度及第二符号的长度进行比较，所述第二符号包括所述第二数据符号和所述第二保护带；
    所述第一无线网络设备确定所述子帧所处系统是否为单载波系统；
    若所述子帧所处系统不为单载波系统，且所述第一保护带的长度大于所述第二保护带的长度，且所述第一保护带的长度小于所述第二符号的长度，则所述第一无线网络设备计算所述第一保护带的长度与所述第二保护带的长度的差值，根据所述差值以及所述第二数据符号的长度确定需要间隔的子载波数目，并按照所述子载波数目进行频域分布式资源映射；
    所述第一无线网络设备将所述第二符号的长度与所述第一保护带的长度的差作为所述第一数据符号的长度，并将所述第一数据符号中的目标长度作为 需要传输的数据的长度，其中，所述目标长度为所述第二数据符号的长度与所述子载波数目加一的商。
  15. 根据权利要求10-14任一项所述的方法，其特征在于，所述方法还包括：
    所述第一无线网络设备向所述第二无线网络设备发送通知消息，所述通知消息用于通知所述第二无线网络设备所述子帧的配置信息，所述配置信息包括所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息中的一项或多项。
  16. 根据权利要求10-15任一项所述的方法，其特征在于，所述第一数据符号的位置信息、所述第一保护带的位置信息以及所述第一保护带的长度信息是所述第一无线网络设备与所述第二无线网络设备预先协商确定出的。
  17. 根据权利要求10-16任一项所述的方法，其特征在于，所述第一保护带包括插零前缀ZP，所述第二保护带包括循环前缀CP。
  18. 根据权利要求10-16任一项所述的方法，其特征在于，所述第一保护带包括插零后缀ZT，所述第二保护带包括循环前缀CP。
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