WO2017049727A1 - 一种基于上行复用的数据传输方法及装置 - Google Patents

一种基于上行复用的数据传输方法及装置 Download PDF

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Publication number
WO2017049727A1
WO2017049727A1 PCT/CN2015/093507 CN2015093507W WO2017049727A1 WO 2017049727 A1 WO2017049727 A1 WO 2017049727A1 CN 2015093507 W CN2015093507 W CN 2015093507W WO 2017049727 A1 WO2017049727 A1 WO 2017049727A1
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uplink
transmission channel
uplink transmission
data
base station
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PCT/CN2015/093507
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English (en)
French (fr)
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朱亚军
李明菊
张云飞
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宇龙计算机通信科技(深圳)有限公司
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Publication of WO2017049727A1 publication Critical patent/WO2017049727A1/zh

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    • 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
    • H04W16/14—Spectrum sharing arrangements between different networks
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

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  • the present invention relates to the field of communications technologies, and in particular, to a data transmission method and apparatus based on uplink multiplexing.
  • LAA licensed-assisted access
  • the transmission of mobile communication can be carried on an unlicensed spectrum, such as the 5 GHz band.
  • unlicensed spectrums currently mainly WiFi, Bluetooth, radar, medical and other systems are in use.
  • the direct use of the LTE mechanism on the unlicensed spectrum cannot guarantee the security of the user and the stability of the connection. Therefore, in the LAA mechanism, the licensed spectrum is used to assist in access on the unlicensed spectrum.
  • a data transmission method based on uplink multiplexing comprising:
  • the service data transmission is performed through the uplink transmission channel.
  • the step of detecting whether the uplink transmission channel is occupied further includes:
  • the step of generating preset occupation data further includes:
  • the step of receiving the preset signal feature corresponding to the cell to which the base station delivers is:
  • the step of detecting whether the uplink transmission channel is occupied further includes:
  • Offset data in the uplink transport channel according to a preset signal feature corresponding to the cell to which the base station delivers.
  • the step of detecting whether the uplink transmission channel is occupied further includes:
  • the uplink transmission channel is abandoned and the detection is continued.
  • the step of acquiring an upload time slot allocated by the base station is:
  • Radio resource control RRC signaling Receiving radio resource control RRC signaling, MAC CE or physical layer signaling of the base station on the licensed spectrum or the unlicensed spectrum, and parsing the uplink time slot allocated by the base station.
  • a data transmission device based on uplink multiplexing comprising:
  • a channel occupancy detecting module configured to detect whether an uplink transmission channel is occupied
  • An occupation data generating module configured to generate preset occupation data when detecting that the uplink transmission channel is not occupied
  • An uplink transmission channel occupant module configured to acquire an uplink time slot allocated by the base station, and send the occupied space by using the uplink transmission channel before detecting that the first uplink time slot after the uplink transmission channel is not occupied arrives data;
  • an uplink transmission module configured to perform service data transmission by using the uplink transmission channel when detecting that the first uplink time slot after the uplink transmission channel is not occupied arrives.
  • the apparatus further includes a signal feature receiving module, configured to receive a preset signal feature corresponding to the cell to which the base station delivers;
  • the occupancy data generating module is further configured to generate occupancy data according to the received signal feature corresponding to the cell to which the cell belongs.
  • the signal feature receiving module is configured to receive RRC signaling, MAC CE, or physical layer signaling sent by the base station on the licensed spectrum or the unlicensed spectrum, and parse the signal characteristics corresponding to the cell to which the cell belongs.
  • the apparatus further includes a channel data cancellation module, configured to cancel data in the uplink transmission channel according to a preset signal feature corresponding to the cell to which the base station delivers.
  • the channel occupancy detecting module is further configured to, when detecting that the uplink transmission channel is occupied, abandon the occupation of the uplink transmission channel, and continue to detect the channel.
  • the uplink transmission channel occupation module is further configured to receive radio resource control RRC, MAC CE signaling, or physical layer signaling of the base station on the licensed spectrum or the unlicensed spectrum, and parse the base station.
  • the assigned upload slot is further configured to receive radio resource control RRC, MAC CE signaling, or physical layer signaling of the base station on the licensed spectrum or the unlicensed spectrum, and parse the base station.
  • the assigned upload slot is further configured to receive radio resource control RRC, MAC CE signaling, or physical layer signaling of the base station on the licensed spectrum or the unlicensed spectrum.
  • the terminal in the same cell can prevent the terminal of another cell from occupying the channel resource transmission data allocated by the base station of the cell by transmitting the occupied data corresponding to the cell (due to other).
  • the terminal of the cell is not the service object of the base station of the cell, even if the upload is discarded, thereby becoming an interference signal, and the terminal of the same cell can also determine the uplink transmission channel of the unlicensed spectrum by canceling the occupied data with each other. It is not occupied, so that the channel resources of the base station can be multiplexed when the uplink time slot allocated by the base station of the cell arrives, thereby improving resource utilization.
  • 1 is a networking diagram of an LAA system in an embodiment
  • FIG. 2 is a flow chart of a data transmission method based on uplink multiplexing in an embodiment
  • FIG. 3 is a schematic diagram of a subframe slot of an OFDM system in an embodiment
  • FIG. 4 is a schematic diagram of a process in which multiple terminals compete for time slot resources in an embodiment
  • FIG. 5 is a schematic diagram of a data transmission apparatus based on uplink multiplexing in one embodiment.
  • LAA base station 1 and LAA base station 2 coexist with a WiFi system
  • the user served by the LAA base station 1 It is the terminals 1 and 2
  • the terminal served by the LAA base station 2 is the terminal 3
  • the terminal served by the WiFi AP is the terminal 4.
  • These three cells can work on the same channel and need to compete to use channel resources. If the channel resources are allocated in the traditional way of competing for channel resources in the technology, the success rate of the LBT is low due to interference between the terminals, and it is difficult to compete for channel resources, thereby causing insufficient resource utilization.
  • a A data transmission method based on uplink multiplexing which may be implemented by a mobile terminal supporting the LAA system.
  • the method includes:
  • Step S102 When the preset detection time slot arrives, it is detected whether the uplink transmission channel is occupied.
  • the terminal can detect whether the uplink transmission channel that uploads data to the base station is occupied when the preset detection time slot arrives, and the terminal uses the LBT mechanism to detect whether the uplink transmission channel is occupied, and can be detected by using FBE or LBE. Whether other terminals in the uplink transmission channel are uploading data to the base station.
  • the terminal can periodically detect whether the uplink transmission channel is occupied by the LBT mechanism, and the preset detection time slot is a plurality of time slot intervals that arrive periodically, and each time periodically arrives at the detection time slot. At the time of the moment, the above process of detecting whether the uplink transmission channel is occupied may be performed.
  • the LBE mode according to the service requirement, when the detection time slot defined by the upper layer service arrives, the process of detecting whether the uplink transmission channel is occupied is performed.
  • FIG. 3 shows an Orthogonal Frequency Division Multiplexing (OFDM) system, that is, a frame structure in data transmission, and the data transmitted by the terminal to the base station is a structure of multiple subframes.
  • Each subframe contains a slot resource.
  • Each subframe contains a plurality of OFDM symbols, and each OFDM symbol corresponds to a corresponding slot resource.
  • the terminal may detect whether the uplink transmission channel is occupied when the terminal arrives at a time corresponding to a time slot of an OFDM symbol of a certain OFDM subframe, and the time slot is a preset detection time slot.
  • CCA Clear Channel Assessment
  • a device when a device needs to transmit data on a certain channel, it first receives on the channel. If a device does not find that another device transmits data on the channel after a given time, it determines that the channel is idle. If found to have it When his device is sending data, he will retry the process again after escaping for a while.
  • the method can effectively avoid collisions on the wireless channel, also called Carrier Sense Multiple Access with Conflict Avoidance (CSMA/CA).
  • CSMA/CA Carrier Sense Multiple Access with Conflict Avoidance
  • Step S104 Generate preset occupation data when it is detected that the uplink transmission channel is not occupied.
  • Step S106 Acquire an uplink time slot allocated by the base station, and send the occupied data through the uplink transmission channel before detecting that the first uplink time slot after the uplink transmission channel is not occupied.
  • the base station may allocate time slot resources on the unlicensed spectrum to the plurality of terminals served by the base station according to the idle condition of the channel resource, so that the terminal can upload to the terminal through the unlicensed spectrum when the corresponding time slot resource arrives. data.
  • the base station can notify the symbol 4 and symbol 11 of the terminal subframe N as the upload time at the time of the subframe N-4 (the channel resources of the base station may be used for other services such as downlink data transmission).
  • the starting time position of the data the base station may send RRC signaling, MAC CE or physical layer signaling (either broadcast or separate transmission) to all terminals on the channel, the terminal, on the licensed spectrum or the unlicensed spectrum.
  • Radio resource control RRC signaling Receiving radio resource control RRC signaling, MAC CE or physical layer signaling of the transmission of the base station on the licensed spectrum or the unlicensed spectrum, and parsing the uplink time slot allocated by the base station, that is, symbol 4 and symbol 11 of the subframe N Gap.
  • the base station transmitting the allocation of the uplink time slot is the base station 1 in FIG. 1, as described above, since the LAA base station 1, the LAA base station 2, and the wifi three cells operate on the same channel in the LAA system, The terminal 1, the terminal 2, the terminal 3, and the terminal 4 need to compete for the use of the channel. If the resource competition is performed according to the conventional technology, the competition behavior of the terminal 3 and the terminal 4 interferes with the terminal 1 and the terminal 2.
  • the terminal 1 performs the LBT by using the symbol8 slot of the subframe N as the detection slot, and passes the CAA check, it can determine that the channel is in the subframe.
  • the slot position of symbol 8 of N is idle.
  • terminal 1 can continuously transmit the occupied data using the uplink transmission channel at the slot position of symbol 9 of subframe N.
  • the terminal 3 performs LBT in the symbol9 position of the subframe N to detect whether the uplink transmission channel is occupied, since the uplink transmission channel has been occupied by the occupied data sent by the terminal 1, the terminal 3 cannot Through the CAA check, it will always be determined that the uplink transport channel is in an occupied state.
  • Step S108 When it is detected that the first uplink time slot after the uplink transmission channel is not occupied, the service data transmission is performed by using the uplink transmission channel.
  • the terminal 1 detects that the uplink transmission channel is idle, and continuously transmits the occupied data through the uplink transmission channel, that is, continuously transmits the occupied data in the slot positions of symbol 9 and symbol 10 of the subframe N. Therefore, the device of the other cell such as the terminal 3 determines that the upload transport channel is occupied, and therefore does not use the upload transport channel to send data to the base station.
  • the terminal 1 ends transmitting the occupied data, and then transmits the service data to be transmitted to the base station, thereby Complete the upload of the data.
  • the terminal 3 since the uplink transmission channel that is continuously detected is in an occupied state, the terminal 3 does not use the uplink transmission channel to transmit data, and therefore does not interfere with the uploading behavior of the terminal 1.
  • the terminal may also receive the uplink transmission channel before the step of detecting whether the uplink transmission channel is occupied.
  • the step of generating the preset occupation data by the terminal may be specifically: generating the occupation data according to the received signal feature corresponding to the cell.
  • the terminal may further cancel the data in the uplink transmission channel according to a preset signal feature corresponding to the cell to which the base station sends the signal.
  • the LAA base station 1 can transmit the signal characteristics corresponding to the LAA base station 1 to the terminal 1 and the terminal 2 in advance through RRC signaling or physical signaling (LAA base station 1 is terminal 1 and terminal 2)
  • the cell base station to which it belongs for example, the cell identity of the LAA base station 1
  • the LAA base station 2 can transmit the signal feature corresponding to the LAA base station 2 to the terminal 3 by RRC signaling or physical signaling in advance (LAA base station 2 is the cell to which the terminal 3 belongs) Base station), such as the cell identity of the LAA base station 2.
  • Step S104 Send the cell identifier of the LAA base station 1 by using the uplink transmission channel of the unlicensed spectrum.
  • the terminal 3 since the cell identity of the LAA base station 1 on the uplink transmission channel of the unlicensed spectrum is unsuccessful through the cell identity of the LAA base station 2, the LAA base station 1 on the uplink transmission channel of the unlicensed spectrum The cell identifier is the transmission data on the uplink transmission channel of the unlicensed spectrum for the terminal 3, and the terminal 3 occupies the uplink transmission channel. At this time, the terminal 3 can abandon the occupation of the uplink transmission channel and continue to perform detection.
  • the base station 1 broadcasts symbol4 and symbol1 of the subframe N as an upload slot through the licensed spectrum or the unlicensed spectrum, the detection slot of the terminal 1 is symbol6, and the detection slot of the terminal 2 is symbol8.
  • the detection time slot of the terminal 3 is symbol8. Therefore, when the symbol4 time slot of the subframe N arrives, since the terminal 1, the terminal 2, and the terminal 3 do not start to perform LBT to detect the uplink transmission channel, therefore, in the subframe N In the symbol4 time slot, no terminal occupies the uplink transmission channel to upload data to the base station.
  • the terminal 1 When the time reaches the symbol6 time slot of the subframe N, the terminal 1 starts detecting the LBT to detect the uplink transmission channel of the unlicensed spectrum, and if the CAA check is passed, determining that the uplink transmission channel of the unlicensed spectrum is not It is occupied, and the cell identifier of the LAA base station 1 is transmitted using the uplink transmission channel of the unlicensed spectrum in the symbol 7 slot of the subframe N.
  • the terminal 2 When the time reaches the symbol8 time slot of the subframe N, the terminal 2 starts to perform the LBT to detect the uplink transmission channel of the unlicensed spectrum, and first uses the cell identifier of the LAA base station 1 to cancel the uplink transmission channel of the unlicensed spectrum. Since the terminal 1 continuously transmits the cell identity of the LAA base station 1 using the uplink transmission channel of the unlicensed spectrum starting from the symbol 7 slot of the subframe N, the data received by the terminal 2 through the uplink transmission channel of the unlicensed spectrum is cancelled.
  • the CA2 can also start to use the uplink transmission channel of the unlicensed spectrum to transmit the cell identifier of the LAA base station 1, that is, the uplink transmission channel of the unlicensed spectrum is started in the symbol9 slot of the subframe N.
  • the cell identity of the LAA base station 1 is transmitted.
  • the terminal 3 when the time reaches the symbol8 time slot of the subframe N, the terminal 3 also starts to perform the LBT to detect the uplink transmission channel of the unlicensed spectrum, and first uses the cell identifier of the LAA base station 2 to uplink the transmission channel of the unlicensed spectrum. To perform the cancellation, since the terminal 1 and the terminal 2 continue to use the uplink transmission channel of the unlicensed spectrum to transmit the cell identity of the LAA base station 1 at the beginning of the symbol 7 slot of the subframe N, the terminal 2 passes the uplink transmission channel of the unlicensed spectrum.
  • the received cell identifier of the LAA base station 1 cannot be cancelled by the cell identifier of the LAA base station 2, so that the terminal 3 cannot pass the CAA check, thereby It is determined that the uplink transmission channel of the unlicensed spectrum is occupied, and at this time, the terminal 3 can abandon the occupation of the uplink transmission channel and continue to perform detection.
  • the terminal 1 and the terminal 2 both transmit data to the base station by using the uplink transmission channel of the unlicensed spectrum at this time.
  • the terminal 1 or the terminal 2 in the same cell can prevent the terminal of other cells from occupying the channel resource transmission data allocated by the base station of the cell by transmitting the occupied data corresponding to the cell (due to the terminal of other cells)
  • a terminal in an LAA system, may be sent as an uplink transmission channel of an unlicensed spectrum as the identity of the terminal 1 in the above example.
  • Occupancy data may also be used as the identity of the terminal 2 in the above example, and cancel the uplink transmission channel of the unlicensed spectrum according to the signal characteristics corresponding to the cell, and cancel the success; or may be the identity of the terminal 3 in the above example, according to The signal characteristics corresponding to the associated cell cancel the uplink transmission channel of the unlicensed spectrum, and cancel the failure.
  • the terminal has less opportunity to occupy the channel when transmitting data in the uplink, so that the utilization problem of the channel resource is insufficient.
  • a data transmission apparatus based on uplink multiplexing is proposed.
  • the apparatus includes a channel occupancy detection module 102, an occupied data generation module 104, an uplink transmission channel occupation module 106, and an uplink transmission module 108, where:
  • the channel occupancy detecting module 102 is configured to detect whether the uplink transmission channel is occupied.
  • the occupancy data generating module 104 is configured to generate preset occupation data when detecting that the uplink transmission channel is not occupied.
  • the uplink transmission channel occupation module 106 is configured to acquire an uplink time slot allocated by the base station, and send the occupied data by using the uplink transmission channel before detecting that the first uplink time slot after the channel is not occupied.
  • the uplink transmission module 108 is configured to perform service data transmission on the uplink transmission channel when the first uplink time slot after the detection time slot arrives.
  • the device further includes a signal feature receiving module 110, configured to receive a preset signal feature corresponding to the cell to which the base station delivers.
  • the occupancy data generating module 104 is further configured to generate occupancy data according to the received signal feature corresponding to the cell to which the cell belongs.
  • the preset signal characteristics corresponding to the cell to which the base station receives the signal received by the signal feature receiving module 110 are predefined or transmitted by the receiving base station on the licensed spectrum or the unlicensed spectrum. CE or physical layer signaling is known.
  • the device further includes a channel data cancellation module 112, configured to perform data on the uplink transmission channel according to a preset signal feature corresponding to the cell to which the base station is delivered. offset.
  • the channel occupancy detecting module 102 is further configured to, when detecting that the uplink transmission channel is occupied, abandon the occupation of the uplink transmission channel, and continue to detect the channel.
  • the uplink transmission channel occupation module 106 is further configured to receive radio resource control RRC, MAC CE signaling, or physical layer signaling of the base station to transmit on the licensed spectrum or the unlicensed spectrum, and parse the allocation of the base station. Upload time slot.
  • the terminal in the same cell can prevent the terminal of another cell from occupying the channel resource transmission data allocated by the base station of the cell by transmitting the occupied data corresponding to the cell (due to other).
  • the terminal of the cell is not the service object of the base station of the cell, even if the upload is discarded, thereby becoming an interference signal, and the terminal of the same cell can also determine the uplink transmission channel of the unlicensed spectrum by canceling the occupied data with each other. It is not occupied, so that the channel resources of the base station can be multiplexed when the uplink time slot allocated by the base station of the cell arrives, thereby improving resource utilization.

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Abstract

本发明实施例公开了一种基于上行复用的数据传输方法，包括：检测上行传输信道是否被占用(S102)；在检测到所述上行传输信道未被占用时，生成预设的占用数据(S104)；获取基站分配的上传时隙，在检测到所述上行传输信道未被占用后的第一所述上传时隙抵达之前，通过所述上行传输信道发送所述占用数据(S106)；在检测到所述上行传输信道未被占用后的第一个所述上传时隙抵达时，通过所述上行传输信道进行业务数据传输(S108)。本发明还公开了一种基于上行复用的数据传输装置。通过应用本发明的基于上行复用的数据传输方法及装置，可以提高信道资源的资源利用率。

Description

一种基于上行复用的数据传输方法及装置 技术领域
本发明涉及通信技术领域，尤其涉及一种基于上行复用的数据传输方法及装置。
背景技术
随着移动业务的快速发展，现有的分配给移动业务的无线频谱的容量已经无法满足要求了。在3GPP Rel-13阶段，一种称作LAA(licensed-assisted access)的机制被引入了。在LAA机制中，移动通信的传输可以在非授权频谱上承载，如5GHz的频段。在这些非授权频谱上，目前主要是WiFi，蓝牙，雷达，医疗等***在使用。
由于非授权频谱上***的多样性和复杂性，直接把LTE的机制用于非授权频谱上是无法保证用户的安全性以及连接的稳定性的。因此，在LAA的机制中，使用授权频谱来帮助非授权频谱上的接入。
在LAA***中，为了保证与其他***的公平共享非授权频谱。一种先听后说(listen before talk)的机制被引入了。也就是说在发送数据之前，需要发送端去检测信道是否空闲。当信道空闲的时候才能够去发送数据。LBT机制的使用大致分为两种方法，一种是FBE(Frame-Based Equipment)，一种是LBE(Load-Based Equipment)。FBE的情况下，可以使得不同的发送端可以在相对固定的时间去检测信道，从而提高了复用的机会；然而占用频谱的机会可能较少；LBE可以由业务驱动，随时的去检测信道，提高了信道占用的机会，然而无法保证发送端在同一个时刻去占用信道，因为无法保证不同发送端的复用。因此，传统技术中的LAA***中，终端在上行传输数据时，占用信道的机会较少，使得信道资源的利用率不足。
发明内容
基于此，为解决上述提到的传统技术中的LAA***中，终端在上行传输数 据时，占用信道的机会较少，使得信道资源的利用率不足的技术问题，特提出了一种基于上行复用的数据传输方法。
一种基于上行复用的数据传输方法，包括：
检测上行传输信道是否被占用；
在检测到所述上行传输信道未被占用时，生成预设的占用数据；
获取基站分配的上传时隙，在检测到所述上行传输信道未被占用后的第一个所述上传时隙抵达之前，通过所述上行传输信道发送所述占用数据；
在检测到所述上行传输信道未被占用后的第一个所述上传时隙抵达时，通过所述上行传输信道进行业务数据传输。
在其中一个实施例中，所述检测上行传输信道是否被占用的步骤之前还包括：
接收所述基站下发的预设的与所属小区对应信号特征；
所述生成预设的占用数据的步骤还包括：
根据所述接收到的与所属小区对应信号特征生成占用数据。
在其中一个实施例中，所述接收所述基站下发的预设的与所属小区对应信号特征的步骤为：
接收基站在授权频谱或非授权频谱上发送的RRC信令、MAC CE或是物理层信令，解析得到与所属小区对应信号特征。
在其中一个实施例中，所述检测上行传输信道是否被占用的步骤之前还包括：
根据所述基站下发的预设的与所属小区对应信号特征对所述上行传输信道中的数据进行抵消。
在其中一个实施例中，所述检测上行传输信道是否被占用的步骤之后还包括：
在检测到上行传输信道被占用时，放弃占用所述上行传输信道，继续进行检测。
在其中一个实施例中，所述获取基站分配的上传时隙的步骤为：
接收基站在授权频谱或非授权频谱上的发送的无线资源控制RRC信令、MAC CE或物理层信令，解析得到所述基站分配的上传时隙。
此外，为解决上述提到的传统技术中的LAA***中，终端在上行传输数据时，占用信道的机会较少，使得信道资源的利用率不足的技术问题，特提出了一种基于上行复用的数据传输装置。
一种基于上行复用的数据传输装置，包括：
信道占用检测模块，用于检测上行传输信道是否被占用；
占用数据生成模块，用于在检测到上行传输信道未被占用时，生成预设的占用数据；
上行传输信道占用模块，用于获取基站分配的上传时隙，在检测到所述上行传输信道未被占用后的第一个所述上传时隙抵达之前，通过所述上行传输信道发送所述占用数据；
上行传输模块，用于在检测到所述上行传输信道未被占用后的第一个所述上传时隙抵达时，通过所述上行传输信道进行业务数据传输。
在其中一个实施例中，所述装置还包括信号特征接收模块，用于接收所述基站下发的预设的与所属小区对应信号特征；
所述占用数据生成模块还用于根据所述接收到的与所属小区对应信号特征生成占用数据。
在其中一个实施例中，所述信号特征接收模块用于接收基站在授权频谱或非授权频谱上发送的RRC信令、MAC CE或是物理层信令，解析得到与所属小区对应信号特征。在其中一个实施例中，所述装置还包括信道数据抵消模块，用于根据所述基站下发的预设的与所属小区对应信号特征对所述上行传输信道中的数据进行抵消。
在其中一个实施例中，所述信道占用检测模块还用于在检测到上行传输信道被占用时，放弃占用所述上行传输信道，并继续检测信道。
在其中一个实施例中，所述上行传输信道占用模块还用于接收基站在授权频谱或非授权频谱上的发送的无线资源控制RRC、MAC CE信令或物理层信令，解析得到所述基站分配的上传时隙。
实施本发明实施例，将具有如下有益效果：
在上述基于上行复用的数据传输方法即装置中，处于同一个小区的终端可通过发送与该小区对应的占用数据，防止其他小区的终端占用该小区的基站分配的信道资源传输数据(由于其他小区的终端不是该小区的基站的服务对象，即使上传也会被丢弃，从而变为干扰信号)，而同一个小区的终端也可通过相互抵消占用数据，而判定非授权频谱的上行传输信道为未被占用，从而可在该小区的基站分配的上传时隙抵达时，复用该基站的信道资源，从而提高了资源利用率。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
其中：
图1为一个实施例中一种LAA***的组网图；
图2为一个实施例中一种基于上行复用的数据传输方法流程图；
图3为一个实施例中OFDM***的子帧时隙的示意图；
图4为一个实施例中多个终端竞争时隙资源的过程示意图；
图5为一个实施例中基于上行复用的数据传输装置的示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
传统技术中，以图1中的部署场景为例，考虑了两个LAA小区(LAA基站1和LAA基站2)与一个WiFi***共存的例子，其中LAA基站1服务的用户 是终端1和2；LAA基站2服务的终端是终端3；WiFi的AP服务的终端是终端4。这三个小区可以工作在相同的信道上，需要竞争去使用信道资源。若采用传统是技术中竞争信道资源的方式去分配信道资源，由于终端之间的干扰，使得终端做LBT的成功率较低，很难竞争到信道资源，从而造成资源利用率不足的问题。
因此，为解决上述提到的传统技术中的LAA***中，终端在上行传输数据时，占用信道的机会较少，使得信道资源的利用率不足的技术问题，在本实施例中，提出了一种基于上行复用的数据传输方法，该方法可依赖于支持LAA***的移动终端实现。
具体的，如图2所示，该方法包括：
步骤S102：在预设的检测时隙抵达时，检测上行传输信道是否被占用。
在LAA***中，终端可在预先设定的检测时隙抵达时检测向基站上传数据的上行传输信道是否被占用，终端采用LBT机制检测上行传输信道是否被占用，可采用FBE或LBE的方式检测上行传输信道中是否有其他终端在向基站上传数据。在FBE方式中，终端可周期性地通过LBT机制检测上行传输信道是否被占用，预设的检测时隙即为周期性抵达的多个时隙区间，每当周期性地抵达检测时隙所对应的时刻时，均可执行上述检测上行传输信道是否被占用的过程。而在LBE的方式中，可根据业务需要，在上层业务定义的检测时隙抵达时，执行上述检测上行传输信道是否被占用的过程。
如图3所示，图3展示了正交频分复用技术(英文：Orthogonal Frequency Division Multiplexing，简称：OFDM)即数据传输中的帧结构，终端向基站发送的数据为多个子帧的结构，每个子帧包含有时隙资源。每个子帧包含有多个OFDM符号(symbol)，每个OFDM symbol即对应相应的时隙资源。在LAA***中，终端可在预设的某个OFDM子帧的某个OFDM symbol的时隙对应的时刻抵达时，检测上行传输信道是否被占用，该时隙即为预设的检测时隙。
在本实施例中，可通过空闲信道评估(英文：Clear Channel Assessment，简称：CCA)检测上行传输信道是否被占用。在无线通信***中，当设备需要在某一信道上发送数据之前，首先在这个频道上进行接收，如果经过给定的时间，没有发现有其它设备在此频道上发送数据，则判定该信道空闲；如果发现有其 他设备在发送数据，则随机避让一段时间后再次重试此过程。该方法能够有效地避免无线信道上的冲突，也叫做带有冲突避免的载频侦听多路访问(Carrier Sense Multiple Access with Conflict Avoidance,CSMA/CA)。
步骤S104：在检测到上行传输信道未被占用时，生成预设的占用数据。
步骤S106：在获取基站分配的上传时隙，在检测到上行传输信道未被占用后的第一个所述上传时隙抵达之前，通过所述上行传输信道发送所述占用数据。
在本实施例中，基站可根据信道资源的空闲情况为其服务的多个终端分配非授权频谱上的时隙资源，使得终端能够在相应的时隙资源抵达时，通过非授权频谱向终端上传数据。如图3所示，基站可在子帧N-4(此时基站的信道资源可能用于下行数据传输等其他业务)的时刻通知终端子帧N的symbol4和symbol11两个时隙位置可作为上传数据的起始时间位置，基站可在授权频谱或非授权频谱上发送无线资源控制RRC信令、MAC CE或物理层信令发送(广播或单独发送均可)给该信道上的所有终端，终端接收基站在授权频谱或非授权频谱上的发送的无线资源控制RRC信令、MAC CE或物理层信令，解析得到所述基站分配的上传时隙，即子帧N的symbol4和symbol11两个时隙。
若发送该上传时隙分配情况的基站为图1中的基站1，则如前所述，由于上述LAA***中，LAA基站1、LAA基站2和wifi三个小区工作在相同的信道上，因此，终端1、终端2、终端3和终端4需要竞争使用信道，若按照传统技术的方式进行资源竞争，则终端3和终端4的竞争行为会对终端1和终端2进行干扰。
在本实施例中，为避免上述干扰，如图3所示，终端1若将子帧N的symbol8时隙作为检测时隙，进行LBT，通过了CAA校验，则可判定该信道在子帧N的symbol8的时隙位置为空闲状态，此时，终端1可在子帧N的symbol9的时隙位置使用该上行传输信道持续地发送占用数据。对于终端3而言，若终端3在子帧N的symbol9位置进行LBT，检测该上行传输信道是否被占用，则由于该上行传输信道已经被终端1发送的占用数据所占用，因此，终端3无法通过CAA校验，将一直判定上行传输信道处于被占用的状态。
步骤S108：在检测到所述上行传输信道未被占用后的第一个所述上传时隙抵达时，通过所述上行传输信道进行业务数据传输。
在上例中，终端1在检测时隙抵达时，检测到上行传输信道处于空闲后，将通过上行传输信道持续发送占用数据，即在子帧N的symbol9、symbol10的时隙位置持续发送占用数据，使得终端3等其他小区的设备判定该上传传输信道为被占用，因此不会使用该上传传输信道向基站发送数据。但当子帧N的symbol11时隙抵达时，由于该时隙为基站预先分配的上行传输数据的起始位置，则终端1结束发送占用数据，而转而发送需要发送的业务数据至基站，从而完成数据的上传。而对于终端3而言，由于其持续检测到的该上行传输信道为被占用状态，则终端3不会使用该上行传输信道发送数据，因此不会对终端1的上传行为进行干扰。
在本实施例中，为了让同一小区的终端可复用非授权频谱的同一时隙资源内的上行传输信道，终端在检测上行传输信道是否被占用的步骤之前还可接收所述基站下发的预设的与所属小区对应信号特征，该信号特征是预定义的或是通过接收基站在授权频谱或非授权频谱上发送的RRC信令、MAC CE或是物理层信令获知的；
而终端生成预设的占用数据的步骤还可具体为根据所述接收到的与所属小区对应信号特征生成占用数据。
进一步的，终端检测上行传输信道是否被占用的步骤之前还可根据所述基站下发的预设的与所属小区对应信号特征对所述上行传输信道中的数据进行抵消。
也即是说，如图1所示，LAA基站1可预先通过RRC信令或物理信令将与LAA基站1对应的信号特征发送给终端1和终端2(LAA基站1为终端1和终端2所属的小区基站)，例如LAA基站1的小区标识；LAA基站2可预先通过RRC信令或物理信令将与LAA基站2对应的信号特征发送给终端3(LAA基站2为终端3所属的小区基站)，例如LAA基站2的小区标识。
终端1在执行上述方法，检测到非授权频谱的上行传输信道未占用时，则通过上行传输信道上传LAA基站1的小区标识作为占用数据；终端2在后续执行上述方法，检测到非授权频谱的上行传输信道是否被占用时，则可先使用LAA基站1的小区标识对上行传输信道中的占用数据进行抵消，若抵消成功，则也判定非授权频谱的上行传输信道为未被占用状态，可选的，也可继续执行上述 步骤S104，使用该非授权频谱的上行传输信道发送LAA基站1的小区标识。
而对于终端3而言，由于其通过LAA基站2的小区标识去抵消非授权频谱的上行传输信道上的LAA基站1的小区标识无法成功，因此，非授权频谱的上行传输信道上的LAA基站1的小区标识对于终端3而言即为非授权频谱的上行传输信道上的传输数据，终端3将上行传输信道被占用，此时终端3可放弃占用所述上行传输信道，并继续进行检测。
具体的，如图4所示，基站1通过授权频谱或非授权频谱广播了子帧N的symbol4和symbol1为上传时隙，终端1的检测时隙为symbol6，终端2的检测时隙为symbol8，终端3的检测时隙为symbol8，因此，在子帧N的symbol4时隙抵达时，由于终端1、终端2和终端3均未开始做LBT对上行传输信道进行检测，因此，在子帧N的symbol4时隙时，没有终端占用上行传输信道向基站上传数据。而当时间抵达子帧N的symbol6时隙时，终端1开始检测做LBT对该非授权频谱的上行传输信道进行检测，若通过了CAA校验，则判定该非授权频谱的上行传输信道为未被占用，并在子帧N的symbol7时隙开始使用该非授权频谱的上行传输信道发送LAA基站1的小区标识。
当时间抵达子帧N的symbol8时隙时，终端2开始做LBT对该非授权频谱的上行传输信道进行检测，并先使用LAA基站1的小区标识对该非授权频谱的上行传输信道进行抵消，由于终端1在子帧N的symbol7时隙开始便持续使用该非授权频谱的上行传输信道发送LAA基站1的小区标识，因此，终端2通过该非授权频谱的上行传输信道接收到的数据被抵消，从而也通过CAA校验，终端2也可开始持续使用该非授权频谱的上行传输信道发送LAA基站1的小区标识，即在子帧N的symbol9时隙开始使用该非授权频谱的上行传输信道发送LAA基站1的小区标识。
同样，当时间抵达子帧N的symbol8时隙时，终端3也开始做LBT对该非授权频谱的上行传输信道进行检测，并先使用LAA基站2的小区标识对该非授权频谱的上行传输信道进行抵消，由于终端1和终端2在子帧N的symbol7时隙开始便持续使用该非授权频谱的上行传输信道发送LAA基站1的小区标识，因此，终端2通过该非授权频谱的上行传输信道接收到的LAA基站1的小区标识无法被LAA基站2的小区标识抵消，使得终端3无法通过CAA校验，从而 判定该非授权频谱的上行传输信道被占用，此时终端3可放弃占用所述上行传输信道，并继续进行检测。
当时间抵达子帧N的symbol11时隙时，由于该时隙为基站1分配的上传时隙，因此，终端1和终端2在该时刻均采用该非授权频谱的上行传输信道向基站传输数据。
由上述过程可看出，处于同一个小区的终端1或终端2可通过发送与该小区对应的占用数据，防止其他小区的终端占用该小区的基站分配的信道资源传输数据(由于其他小区的终端不是该小区的基站的服务对象，即使上传也会被丢弃，从而变为干扰信号)，而同一个小区的终端1或终端2也可通过相互抵消占用数据，而判定非授权频谱的上行传输信道为未被占用，从而可在该小区的基站分配的上传时隙抵达时，复用该基站的信道资源，从而提高了资源利用率。
需要说明的是，上述方法的执行中，该方法可由同一终端执行，如上例中，在一个LAA***中，一个终端既可能作为上述实例中的终端1的身份使用非授权频谱的上行传输信道发送占用数据，也可能作为上述实例中的终端2的身份，根据与所属小区对应信号特征对非授权频谱的上行传输信道进行抵消，并抵消成功；也可能作为上述实例中的终端3的身份，根据与所属小区对应信号特征对非授权频谱的上行传输信道进行抵消，并抵消失败。
此外，为解决上述提到的传统技术中的LAA***中，终端在上行传输数据时，占用信道的机会较少，使得信道资源的利用率不足的技术问题，在一个实施例中，如图5所示，提出了一种基于上行复用的数据传输装置，该装置包括信道占用检测模块102、占用数据生成模块104、上行传输信道占用模块106和上行传输模块108，其中：
信道占用检测模块102，用于检测上行传输信道是否被占用。
占用数据生成模块104，用于在检测到上行传输信道未被占用时，生成预设的占用数据。
上行传输信道占用模块106，用于获取基站分配的上传时隙，在检测到信道未被占用后的第一个所述上传时隙抵达之前，通过所述上行传输信道发送所述占用数据。
上行传输模块108，用于在所述检测时隙之后的第一个所述上传时隙抵达时，通过所述上行传输信道进行业务数据传输。
在本实施例中，如图5所示，该装置还包括信号特征接收模块110，用于接收所述基站下发的预设的与所属小区对应信号特征。
占用数据生成模块104还用于根据所述接收到的与所属小区对应信号特征生成占用数据。
在本实施例中，信号特征接收模块110接收的基站下发的预设的与所属小区对应信号特征是预定义的或是通过接收基站在授权频谱或非授权频谱上发送的RRC信令、MAC CE或是物理层信令获知的。
在本实施例中，如图5所示，该装置还包括信道数据抵消模块112，用于根据所述基站下发的预设的与所属小区对应信号特征对所述上行传输信道中的数据进行抵消。
在本实施例中，信道占用检测模块102还用于在检测到上行传输信道被占用时，放弃占用所述上行传输信道，并继续检测信道。
在本实施例中，上行传输信道占用模块106还用于接收基站在授权频谱或非授权频谱上的发送的无线资源控制RRC、MAC CE信令或物理层信令，解析得到所述基站分配的上传时隙。
实施本发明实施例，将具有如下有益效果：
在上述基于上行复用的数据传输方法即装置中，处于同一个小区的终端可通过发送与该小区对应的占用数据，防止其他小区的终端占用该小区的基站分配的信道资源传输数据(由于其他小区的终端不是该小区的基站的服务对象，即使上传也会被丢弃，从而变为干扰信号)，而同一个小区的终端也可通过相互抵消占用数据，而判定非授权频谱的上行传输信道为未被占用，从而可在该小区的基站分配的上传时隙抵达时，复用该基站的信道资源，从而提高了资源利用率。
以上所揭露的仅为本发明较佳实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。

Claims (11)

  1. 一种基于上行复用的数据传输方法，其特征在于，包括：
    检测上行传输信道是否被占用；
    在检测到所述上行传输信道未被占用时，生成预设的占用数据；
    获取基站分配的上传时隙，在检测到所述上行传输信道未被占用后的第一个所述上传时隙抵达之前，通过所述上行传输信道发送所述占用数据；
    在检测到所述上行传输信道未被占用后的第一个所述上传时隙抵达时，通过所述上行传输信道进行业务数据传输。
  2. 根据权利要求1所述的基于上行复用的数据传输方法，其特征在于，所述检测上行传输信道是否被占用的步骤之前还包括：
    接收所述基站下发的预设的与所属小区对应信号特征；
    所述生成预设的占用数据的步骤还包括：
    根据所述接收到的与所属小区对应信号特征生成占用数据。
  3. 根据权利要求2所述的方法，其特征在于，所述接收所述基站下发的预设的与所属小区对应信号特征的步骤为：
    接收基站在授权频谱或非授权频谱上发送的RRC信令、MAC CE或是物理层信令，解析得到与所属小区对应信号特征。
  4. 根据权利要求2所述的基于上行复用的数据传输方法，其特征在于，所述检测上行传输信道是否被占用的步骤之前还包括：
    根据所述基站下发的预设的与所属小区对应信号特征对所述上行传输信道中的数据进行抵消。
  5. 根据权利要求1所述的基于上行复用的数据传输方法，其特征在于，所述检测上行传输信道是否被占用的步骤之后还包括：
    在检测到上行传输信道被占用时，放弃占用所述上行传输信道，继续进行检测。
  6. 根据权利要求1所述的基于上行复用的数据传输方法，其特征在于，所述获取基站分配的上传时隙的步骤为：
    接收基站在授权频谱或非授权频谱上的发送的无线资源控制RRC信令、 MAC CE或物理层信令，解析得到所述基站分配的上传时隙。
  7. 一种基于上行复用的数据传输装置，其特征在于，包括：
    信道占用检测模块，用于检测上行传输信道是否被占用；
    占用数据生成模块，用于在检测到上行传输信道未被占用时，生成预设的占用数据；
    上行传输信道占用模块，用于获取基站分配的上传时隙，在检测到所述上行传输信道未被占用后的第一个所述上传时隙抵达之前，通过所述上行传输信道发送所述占用数据；
    上行传输模块，用于在检测到所述上行传输信道未被占用后的第一个所述上传时隙抵达时，通过所述上行传输信道进行业务数据传输。
  8. 根据权利要求7所述的基于上行复用的数据传输装置，其特征在于，所述装置还包括信号特征接收模块，用于接收所述基站下发的预设的与所属小区对应信号特征；
    所述占用数据生成模块还用于根据所述接收到的与所属小区对应信号特征生成占用数据。
  9. 根据权利要求8所述的基于上行复用的数据传输装置，其特征在于，所述信号特征接收模块用于接收基站在授权频谱或非授权频谱上发送的RRC信令、MAC CE或是物理层信令，解析得到与所属小区对应信号特征。10、根据权利要求8所述的基于上行复用的数据传输装置，其特征在于，所述装置还包括信道数据抵消模块，用于根据所述基站下发的预设的与所属小区对应信号特征对所述上行传输信道中的数据进行抵消。
  10. 根据权利要求7所述的基于上行复用的数据传输装置，其特征在于，所述信道占用检测模块还用于在检测到上行传输信道被占用时，放弃占用所述上行传输信道，并继续检测信道。
  11. 根据权利要求7所述的基于上行复用的数据传输装置，其特征在于，所述上行传输信道占用模块还用于接收基站在授权频谱或非授权频谱上的发送的无线资源控制RRC、MAC CE信令或物理层信令，解析得到所述基站分配的上传时隙。
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