WO2016106546A1 - 基于ca的信号传输方法、装置和设备 - Google Patents

基于ca的信号传输方法、装置和设备 Download PDF

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Publication number
WO2016106546A1
WO2016106546A1 PCT/CN2014/095515 CN2014095515W WO2016106546A1 WO 2016106546 A1 WO2016106546 A1 WO 2016106546A1 CN 2014095515 W CN2014095515 W CN 2014095515W WO 2016106546 A1 WO2016106546 A1 WO 2016106546A1
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Prior art keywords
time
secondary carrier
carrier
cca
value
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PCT/CN2014/095515
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English (en)
French (fr)
Inventor
武雨春
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华为技术有限公司
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Priority to CN201480084241.7A priority Critical patent/CN107113631A/zh
Priority to PCT/CN2014/095515 priority patent/WO2016106546A1/zh
Publication of WO2016106546A1 publication Critical patent/WO2016106546A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices

Definitions

  • Embodiments of the present invention relate to a wireless communication technology, and in particular, to a CA-based signal transmission method, apparatus, and device.
  • Carrier Aggregation means that the carrier used in the communication process is not limited to one, but communicates simultaneously on one primary carrier and several secondary carriers.
  • LAA Licensed Assisted Access
  • L-Carrier licensed carrier
  • U-carrier unlicensed carrier
  • CA Carrier Aggregation
  • the U-Carrier when the signal is transmitted by using the CA in the LAA, it is first necessary to detect whether the U-carrier is occupied by other devices. If not, the U-Carrier is in an idle state, and the preset duration is The data is sent by the U-Carrier. After the data of the preset duration is sent, if the signal needs to continue to be sent through the U-Carrier, the U-Carrier is re-listed to determine whether the U-Carrier is occupied by other devices.
  • L-Carrier and U-Carrier synchronous transmission mode there are usually two modes: one is L-Carrier and U-Carrier synchronous transmission mode, and the other is L-Carrier and U-Carrier asynchronous transmission mode, in which L-Carrier In the mode of synchronous transmission with the U-Carrier, if the base station detects that the U-carrier is not occupied by other devices, it sends a preamble signal to the user equipment (User Equipment; UE for short) until the subframe boundary of the next L-carrier. And then start sending data to the UE. In the L-Carrier and U-Carrier asynchronous transmission modes, the subframe boundaries of U-Carrier and L-Carrier are not necessarily aligned.
  • the UE since the UE does not know when the base station starts to transmit signals on the U-Carrier, the UE needs to detect the signal on the U-carrier at all times to receive the data sent by the base station, resulting in The complexity and power consumption of the communication system is high.
  • Embodiments of the present invention provide a CA-based signal transmission method, apparatus, and device for reducing complexity and power consumption of a communication system.
  • an embodiment of the present invention provides a CA-based signal transmission method, including:
  • the method further includes:
  • N is an integer and is greater than zero.
  • the determining whether the secondary carrier is in the detection state of the receiving device includes:
  • M is an integer greater than or equal to 0 and less than or equal to N.
  • the determining whether the secondary carrier is in the receiving state needs to detect the state includes:
  • N is an integer and is greater than zero.
  • an embodiment of the present invention provides a CA-based signal transmission method, including:
  • the indication signal is carried in the subframe, detecting, according to the indication signal, whether the signal sent by the sending side device is on the secondary carrier.
  • the method further includes:
  • the signal sent by the sending side device is not detected on the secondary carrier.
  • an embodiment of the present invention provides a CA-based signal transmission apparatus, including:
  • a determining module configured to determine whether the secondary carrier is in a detection state on the receiving side device
  • a processing module configured to generate an indication signal if the judging module determines that the secondary carrier is in a detection state, and the indication signal is carried in a subframe of the primary carrier and sent to the receiving device And the receiving side device detects, according to the indication signal, whether there is a signal sent by the sending side device on the secondary carrier.
  • the processing module is further configured to set a value of an available channel assessment CCA counter to a random number N;
  • the device further includes: a detecting module and a sending module; wherein
  • the detecting module is configured to perform CCA detection on the secondary carrier. If the detection result is that the secondary carrier is not occupied, the value of the CCA counter is decremented by one, and the step is repeated until the CCA counter is performed. When the value of 0 is 0, the sending module is triggered to send a signal on the secondary carrier; where N is an integer and is greater than 0.
  • the determining module includes:
  • An acquiring unit when the sending module sends the current subframe by using the primary carrier, acquiring a value M of the current CCA counter from the detecting module;
  • the obtaining unit is further configured to: when the value of the CCA counter is greater than 0, calculate a first time that is obtained by subtracting the value M of the CCA counter to 0;
  • a determining unit configured to compare the first time and the second time, where the second time is a time remaining in a current subframe of the primary carrier; if the first time is less than or equal to the second time Time, determining that the secondary carrier is in the detection state of the receiving side device;
  • M is an integer greater than or equal to 0 and less than or equal to N.
  • the method further includes: a detecting module and a sending module;
  • the detecting module is configured to detect CCA of the secondary carrier
  • the sending module is configured to send a current subframe to the receiving side device by using the primary carrier
  • the determining module comprises:
  • an acquiring unit configured to: when the sending module sends the current subframe to the receiving device by using the primary carrier, start, by the detecting module, CCA detection of the secondary carrier, and The value is set to a random number N;
  • the obtaining unit is further configured to calculate a third time that is obtained by subtracting the value N from the CCA counter to 0;
  • a judging unit configured to compare the third time and the second time, where the second time is a time remaining from a start CCA detection to a current subframe end in a current subframe of the primary carrier; If the third time is less than or equal to the second time, determining that the secondary carrier is in the detection state of the receiving side device;
  • N is an integer and is greater than zero.
  • an embodiment of the present invention provides a CA-based signal transmission apparatus, including:
  • a receiving module configured to receive a subframe that is sent by the sending side device by using the primary carrier
  • the detecting module is configured to detect, according to the indication signal, whether a signal sent by the sending side device is detected on the secondary carrier, if the indication signal is carried in the subframe received by the receiving module.
  • the detecting module is further configured to: if the indication received by the receiving module does not carry an indication signal, Whether there is a signal sent by the transmitting side device on the secondary carrier.
  • an embodiment of the present invention provides a sending side device, including:
  • a processor configured to determine whether the secondary carrier is in a detection state on the receiving side device
  • the processor is further configured to generate an indication signal if the secondary carrier is in a detection state, and carry the indication signal in a subframe of the primary carrier;
  • a transmitter configured to send, by using the primary carrier, the subframe to the receiving device, where the receiving device detects, according to the indication signal, whether a signal sent by the sending device is detected on the secondary carrier.
  • the method further includes:
  • the processor is further configured to set a value of an available channel assessment CCA counter to a random number N;
  • the processor is further configured to perform CCA detection on the secondary carrier. If the detection result is that the secondary carrier is not occupied, the value of the CCA counter is decremented by one, and the step is repeated until the CCA is performed. When the value of the counter is 0, a signal is transmitted on the secondary carrier; wherein N is an integer and is greater than zero.
  • the processor is further configured to: when the current subframe is sent by using the primary carrier, a value M of the CCA counter; if the value of the CCA counter is greater than 0, calculating a first time corresponding to subtracting the value M from the CCA counter to 0; comparing the first time and the second time, wherein The second time is the time remaining in the current subframe of the primary carrier; if the first time is less than or equal to the second time, determining that the secondary carrier is in the detection state of the receiving device
  • M is an integer greater than or equal to 0 and less than or equal to N.
  • the processor is further configured to start in a process of sending the current subframe to the receiving side device by using the primary carrier Performing CCA detection on the secondary carrier, and setting the value of the CCA counter to a random number N; calculating a third time corresponding to subtracting the value N from the CCA counter to 0; comparing the third time and the second time The second time is the time remaining from the initiation of the CCA detection to the end of the current subframe in the current subframe of the primary carrier; if the third time is less than or equal to the second time, the determination is performed.
  • the secondary carrier is in a state in which the receiving side device needs to detect; wherein N is an integer and is greater than 0.
  • an embodiment of the present invention provides a receiving device, including:
  • a receiver configured to receive a subframe that is sent by the sending side device by using the primary carrier
  • a processor configured to detect, according to the indication signal, whether a signal sent by the sending side device is detected according to the indication signal, if the subframe received by the receiver carries an indication signal.
  • the processor is further configured to: if the indicator received by the receiver does not carry an indication signal, Auxiliary Whether there is a signal sent by the transmitting side device on the carrier.
  • the CA-based signal transmission method, device, and device determine whether the secondary carrier is in the receiving state and needs to detect the state; if the secondary carrier is in the receiving state, the indication signal is generated, and the indication signal is generated.
  • the device is carried in the subframe of the primary carrier and sent to the receiving device, so that the receiving device detects, according to the indication signal, whether there is a signal sent by the transmitting device on the secondary carrier.
  • the transmitting-side device sends an indication signal to the receiving-side device when the secondary carrier is in the state that the receiving-side device needs to be detected, so that the receiving-side device starts detecting whether the signal sent by the transmitting-side device is detected on the secondary carrier after receiving the indication signal.
  • Embodiment 1 is a schematic flowchart of Embodiment 1 of a CA-based signal transmission method according to the present invention
  • Embodiment 2 is a schematic flowchart of Embodiment 2 of a CA-based signal transmission method according to the present invention
  • Embodiment 3 is a schematic flowchart of Embodiment 3 of a CA-based signal transmission method according to the present invention.
  • Embodiment 4 is a schematic flowchart diagram of Embodiment 4 of a CA-based signal transmission method according to the present invention.
  • Embodiment 5 is a schematic flowchart of Embodiment 5 of a CA-based signal transmission method according to the present invention.
  • Embodiment 1 of a CA-based signal transmission apparatus according to the present invention
  • Embodiment 7 is a schematic structural diagram of Embodiment 2 of a CA-based signal transmission apparatus according to the present invention.
  • Embodiment 8 is a schematic structural diagram of Embodiment 3 of a CA-based signal transmission apparatus according to the present invention.
  • Embodiment 4 of a CA-based signal transmission apparatus is a schematic structural diagram of Embodiment 4 of a CA-based signal transmission apparatus according to the present invention.
  • FIG. 10 is a schematic structural diagram of Embodiment 1 of a transmitting device according to the present invention.
  • FIG. 11 is a schematic structural diagram of Embodiment 1 of a receiving device according to the present invention.
  • FIG. 1 is a schematic flowchart diagram of Embodiment 1 of a CA-based signal transmission method according to the present invention.
  • the embodiment of the present invention provides a CA-based signal transmission method.
  • the executor of the present embodiment is a transmitting-side device, which may be, for example, a base station or a UE.
  • the transmitting-side device is a base station
  • the corresponding receiving-side device is a UE.
  • the transmitting device is a UE
  • the corresponding receiving device is a base station.
  • the base station is the transmitting side device
  • the UE is the receiving side device as an example.
  • the processing procedure when the base station is the transmitting side device and the base station is the receiving side device is similar to that, and details are not described herein again.
  • the method in this embodiment may include:
  • Step 101 Determine whether the secondary carrier is in a detection state on the receiving side device.
  • the primary carrier is an L-carrier and the secondary carrier is a U-carrier as an example.
  • U-Carriers follow the principle of fair sharing of resources with other systems (such as WiFi) when transmitting signals through U-Carrier.
  • the base station first performs a Clear Channel Assessment (CCA) detection on the U-Carrier. If the U-Carrier carrier is not occupied by other devices, that is, when it is in an idle state, it is on the U-Carrier. Signal transmission.
  • CCA Clear Channel Assessment
  • the base station determines whether the secondary carrier is in the idle state by using the possibility that the secondary carrier is in the idle state within the preset time period, and if the secondary carrier is in the idle state within the preset time period, It is in the state that the UE needs to detect. Otherwise, the UE does not detect the secondary carrier.
  • Step 102 If the secondary carrier is in the detection state, the indication signal is generated, and the indication signal is carried in the subframe of the primary carrier and sent to the receiving device, where the receiving device detects the secondary carrier according to the indication signal. Is there a signal sent by the transmitting device?
  • the base station may send a subframe to the UE by using the primary carrier before or after determining whether the secondary carrier is in the state that the UE needs to detect.
  • an indication signal is generated, and the indication signal is carried in the subframe of the primary carrier and sent to the UE.
  • the UE After receiving the indication signal, the UE according to the indication The signal is detected from the sub-frame to detect whether the base station transmits the signal through the U-carrier. If the UE detects that the U-carrier has a signal transmitted by the base station in the subframe, the base station and the UE start at the U. - Communicate on the carrier. It can be seen that the UE only starts detecting the U-Carrier after receiving the indication signal, so as to receive the data, instead of detecting the U-Carrier at all times. Thereby reducing the complexity and power consumption of the communication system.
  • the indication signal may be a signal carried in a new channel on the L-Carrier, for example, by designing a new Physical Unlicensed Indicator Channel (PUICH), and carrying the indication signal in the channel;
  • the physical downlink control channel Physical Downlink Control Channel; PDCCH
  • ePDCCH enhanced physical downlink control channel
  • PCFICH Physical Control Format Indicator Channel
  • the present invention is not particularly limited herein for the specific implementation of the indication signal.
  • the CA-based signal transmission method determines whether the secondary carrier is in the detection state by the receiving device. If the secondary carrier is in the detection state, the indicator signal is generated, and the indication signal is carried on the primary carrier.
  • the subframe is sent to the receiving device, so that the receiving device detects, according to the indication signal, whether there is a signal sent by the transmitting device on the secondary carrier.
  • the transmitting device sends an indication signal to the receiving device when the secondary carrier is in the state that the receiving device needs to be detected. After receiving the indication signal, the receiving device starts detecting whether the secondary carrier has a signal sent by the transmitting device. Thereby reducing the complexity and power consumption of the communication system.
  • FIG. 2 is a schematic flowchart diagram of Embodiment 2 of a CA-based signal transmission method according to the present invention. This embodiment will be described in detail on the basis of the embodiment shown in FIG. 1 for transmitting a signal on a secondary carrier. As shown in FIG. 2, the method in this embodiment may include:
  • Step 201 Set the value of the CCA counter to a random number N; wherein N is an integer and is greater than 0.
  • the U-Carrier before the data is transmitted on the U-Carrier, the U-Carrier needs to be intercepted to detect whether the U-Carrier is occupied by other devices, that is, whether it is in an idle state.
  • the state of the U-Carrier can be monitored by means of energy detection or signal detection.
  • the energy detection is taken as an example.
  • the base station detects whether the signal power value exceeds a preset threshold by detecting a signal power value on the U-Carrier channel within a preset time period. The U-Carrier is occupied by other devices. If the preset threshold is not exceeded, the U-Carrier is idle.
  • the preset time range and the preset threshold can be selected according to experience or actual conditions.
  • the base station uses energy detection When the U-Carrier is listening, after continuously detecting 20us, if the detected signal power exceeds -62dBm, the U-Carrier is considered to be occupied by other devices.
  • the U-Carrier is generally detected N times by combining the CCA counters to improve the accuracy of the detection. Specifically, when the detection is started, the value of the CCA counter is set to N, where N is an integer that is randomly selected within a preset value range and is greater than 0, and the preset value range may be, for example, 4-32, for a preset value.
  • the scope of the present embodiment is not particularly limited herein.
  • Step 202 Perform CCA detection on the secondary carrier. If the detection result is that the secondary carrier is not occupied, reduce the value of the CCA counter by 1, and repeat this step until the value of the CCA counter is 0, and send a signal on the secondary carrier. .
  • the base station starts to continuously listen to the state of the secondary carrier, and if it detects that the secondary carrier is not occupied by other devices, the value of the CCA counter is used.
  • Minus 1 If the result of a CCA check is that the secondary carrier is occupied by other devices before the value of the CCA counter is reduced to 0, the current value of the CCA counter is cleared, and a random N' is randomly selected within the preset value range. The value, the value of the CCA counter is set to N', the detection is restarted, and the process is repeated continuously until the value of the CCA counter is reduced to 0, and the base station can transmit the signal on the secondary carrier.
  • the secondary carrier After the signal is transmitted by the secondary carrier for a certain period of time, if the signal needs to be continuously transmitted, the secondary carrier must be re-listened. After confirming that no other device occupies the secondary carrier, the transmission can be continued. If the secondary carrier is found to be occupied by other devices, the base station needs to wait until the secondary carrier is in an idle state before continuing to transmit. If the secondary carrier is always in the occupied state within the preset time period, the base station sends a signal through the primary carrier, or discards the data to be sent. In a specific implementation process, an appropriate preset time period may be selected according to experience or service type.
  • the preset time period is selected as 80 ms, and when browsing the webpage, the preset time period is preset. Select as 2s and so on.
  • the embodiment is not particularly limited herein.
  • the CA-based signal transmission method determines whether the secondary carrier is in the detection state by the receiving device. If the secondary carrier is in the detection state, the indicator signal is generated, and the indication signal is carried on the primary carrier.
  • the subframe is sent to the receiving device, so that the receiving device detects, according to the indication signal, whether there is a signal sent by the transmitting device on the secondary carrier.
  • the receiving device When the secondary device is in a state in which the secondary carrier needs to be detected, the receiving device is in the state that the receiving device needs to be detected.
  • the receiving device starts to detect whether there is a signal sent by the transmitting device on the secondary carrier after receiving the indication signal, thereby reducing the complexity and power consumption of the communication system.
  • the transmitting device can send a signal through the secondary carrier. Since the primary carrier and the secondary carrier communicate at the same time, the number of carriers is increased, thereby greatly improving the communication rate.
  • FIG. 3 is a schematic flowchart diagram of Embodiment 3 of a CA-based signal transmission method according to the present invention.
  • the method in this embodiment may include:
  • Step 301 Acquire a value M of the CCA counter when the current subframe is sent by the primary carrier, where M is an integer greater than or equal to 0 and less than or equal to N.
  • the base station has started to detect the state of the secondary carrier before transmitting the current subframe through the primary carrier, and the detection process continues when the base station sends the current subframe through the primary carrier. Get the value M to the CCA counter. Specifically, if the base station detects that the secondary carrier is not occupied by other devices in the process of detecting the state of the secondary carrier, the value M is a result obtained by continuously decreasing the initial value N of the CCA counter by the number of detections. In this case, M is an integer greater than or equal to 0 and less than N; if the base station transmits the current subframe through the primary carrier, since the secondary carrier is occupied by other devices, the value of the CCA counter needs to be at a preset value. If the value is reselected within the range and the reselected value is taken as the value M of the CCA counter, then M may be equal to N or possibly less than N.
  • Step 302 If the value of the CCA counter is greater than 0, calculate a first time corresponding to subtracting the value M from the CCA counter to 0.
  • the first time corresponding to the value M of the CCA counter is reduced to 0, that is, the time required for the base station to detect the state of the secondary carrier M times.
  • the obtained value of the CCA counter is 21, and if the time required for detecting the secondary carrier once is 20 us, the first time obtained by the calculation is 420 us.
  • Step 303 Compare the first time and the second time, where the second time is the time remaining in the current subframe of the primary carrier.
  • the base station transmits data through a radio frame
  • the period of one radio frame is 10 ms, which includes 10 subframes. Therefore, the time required to transmit one subframe is 1 ms. Since the first time is before the base station sends the current subframe It has been obtained, therefore, the time remaining in the current subframe of the primary carrier is the time required to transmit the entire current subframe, that is, the second time is 1 ms.
  • Step 304 If the first time is less than or equal to the second time, determine that the secondary carrier is in the detection state of the receiving side device.
  • the first time is less than or equal to the second time, it indicates that the CCA counter that has been started may be generated during the current subframe transmission by the primary carrier. If the value is reduced to 0, the secondary carrier is in the state that the UE needs to be detected, and the base station generates an indication signal, and carries the indication signal in the current subframe and sends the indication signal to the UE.
  • the first time is assuming that the secondary carrier has not been occupied by other devices, and the time required for continuous detection of M times. If the first time is less than or equal to the second time, the second carrier cannot be indicated. The time is idle. For example, when the current subframe is sent to the receiving device by using the primary carrier, the first time is calculated to be less than or equal to the second time. At this time, the indication signal is carried in the current subframe and sent to the UE. However, the detection process of the secondary carrier state will continue. If the secondary carrier is found to be occupied by other devices during the detection process, the secondary carrier cannot transmit the signal. In this case, after the UE receives the indication signal, although the secondary carrier is detected according to the indication signal, the signal transmitted by the base station may not be detected on the secondary carrier.
  • the CA-based signal transmission method determines whether the secondary carrier is in the detection state by the receiving device. If the secondary carrier is in the detection state, the indicator signal is generated, and the indication signal is carried on the primary carrier.
  • the subframe is sent to the receiving device, so that the receiving device detects, according to the indication signal, whether there is a signal sent by the transmitting device on the secondary carrier.
  • the transmitting device sends an indication signal to the receiving device when the secondary carrier is in the state that the receiving device needs to be detected. After receiving the indication signal, the receiving device starts detecting whether the secondary carrier has a signal sent by the transmitting device. Thereby reducing the complexity and power consumption of the communication system.
  • the secondary carrier is in the detection state of the receiving device. Therefore, it is determined whether or not the indication signal is transmitted to the receiving side device, whereby the transmission of the signal by the secondary carrier can be performed with maximum efficiency.
  • FIG. 4 is a schematic flowchart diagram of Embodiment 4 of a CA-based signal transmission method according to the present invention.
  • this embodiment on the basis of the embodiment shown in FIG. 1, it is required to detect whether the secondary carrier is on the receiving side device.
  • the embodiment of the state will be described in detail.
  • the difference between this embodiment and the third embodiment is: if the CCA detection of the secondary carrier is started in the process of transmitting the current subframe to the receiving device by using the primary carrier, how to determine whether the secondary carrier is in the receiving device needs to be detected. status.
  • the method in this embodiment may include:
  • Step 401 In the process of transmitting the current subframe to the receiving device by using the primary carrier, start CCA detection on the secondary carrier, and set the value of the CCA counter to a random number N, where N is an integer and is greater than 0.
  • the base station when the base station sends the current subframe to the UE through the primary carrier, if the secondary carrier determines whether the secondary carrier needs to be in the detection state, the base station initiates CCA detection on the secondary carrier state.
  • a value N is randomly selected within the preset value range as the value of the CCA counter.
  • Step 402 Calculate a third time corresponding to subtracting from the value N of the CCA counter to 0.
  • the third time corresponding to the value N of the CCA counter is reduced to 0, that is, the time required for the base station to detect the state of the secondary carrier N times.
  • Step 403 Compare the third time and the second time, where the second time is the time remaining from the start of the CCA detection to the end of the current subframe in the current subframe of the primary carrier.
  • the time required to transmit one subframe in one radio frame is 1 ms
  • the third time is obtained because the CCA detection of the secondary carrier is started in the process of transmitting the current subframe by the base station. Therefore, the second time is the time remaining in the current subframe of the primary carrier from the start of the CCA detection to the end of the current subframe, for example, the base station calculates the third time after starting to transmit the current subframe 200us. The third time that the base station will obtain is compared with the time 800us remaining from the start of the CCA detection to the end of the current subframe in the current subframe of the primary carrier.
  • Step 404 If the third time is less than or equal to the second time, determine that the secondary carrier is in the detection state of the receiving side device.
  • the base station after comparing the third time and the second time, if the third time is less than or equal to the second time, it indicates that the CCA counter that the base station starts to start before the current subframe transmitted by the primary carrier ends. It may be reduced to 0. At this time, it is determined that the secondary carrier is in the UE to be detected. Therefore, the base station generates an indication signal, and carries the indication signal in the current subframe of the primary carrier, and sends the indication signal to the UE.
  • the third time is to assume that the secondary carrier has not been occupied by other devices.
  • the time required for consecutively detecting N times, if the third time is less than or equal to the second time, does not indicate that the secondary carrier is in an idle state in the second time.
  • the third time is calculated to be less than or equal to the second time.
  • the base station sends the indication signal to the UE in the current subframe of the primary carrier.
  • the detection process of the secondary carrier state continues. If the secondary carrier is found to be occupied by other devices during the detection process, the signal cannot be transmitted through the secondary carrier. In this case, after the UE receives the indication signal, although the secondary carrier is detected according to the indication signal, the signal transmitted by the transmission side device may not be detected on the secondary carrier.
  • the CA-based signal transmission method determines whether the secondary carrier is in the detection state by the receiving device. If the secondary carrier is in the detection state, the indicator signal is generated, and the indication signal is carried on the primary carrier.
  • the subframe is sent to the receiving device, so that the receiving device detects, according to the indication signal, whether there is a signal sent by the transmitting device on the secondary carrier.
  • the transmitting device sends an indication signal to the receiving device when the secondary carrier is in the state that the receiving device needs to be detected. After receiving the indication signal, the receiving device starts detecting whether the secondary carrier has a signal sent by the transmitting device. Thereby reducing the complexity and power consumption of the communication system.
  • the secondary carrier is obtained. Whether the device on the receiving side needs to detect the state, thereby determining whether to send an indication signal to the receiving device, thereby using the secondary carrier to transmit the signal with maximum efficiency.
  • FIG. 5 is a schematic flowchart diagram of Embodiment 5 of a CA-based signal transmission method according to the present invention.
  • the embodiment of the present invention provides a CA-based signal transmission method.
  • the executor of the present embodiment is a receiving-side device, which may be, for example, a base station or a UE.
  • the transmitting-side device is a base station
  • the corresponding receiving-side device is a UE.
  • the transmitting device is a UE
  • the corresponding receiving device is a base station.
  • a base station is used as a transmitting device
  • a UE is a receiving device.
  • the method in this embodiment may include:
  • Step 501 Receive a subframe that is sent by the sending side device by using the primary carrier.
  • Step 502 If the indication signal is carried in the subframe, detecting, according to the indication signal, whether there is a signal sent by the sending side device on the secondary carrier.
  • the generated indication signal is carried in the currently transmitting subframe, and the subframe is sent to the UE.
  • UE is picking up
  • the subframe is parsed. If the subframe carries the indication signal, the secondary carrier is intercepted from the subframe according to the indication signal to detect whether the secondary carrier is present. The signal sent by the sending side device. If it is detected in the subframe that there is a signal transmitted by the transmitting device on the secondary carrier, the base station and the UE start to communicate on the secondary carrier.
  • the CA-based signal transmission method receives the subframe that is sent by the transmitting device through the primary carrier, and if the subframe carries the indication signal, detects whether the secondary carrier sends the secondary carrier according to the indication signal. signal. Since the receiving side device starts to detect whether there is a signal sent by the transmitting side device only after receiving the indication signal, it does not need to perform detection at any time, thereby reducing the complexity and power consumption of the communication system.
  • the indication signal is not carried in the subframe, whether the signal sent by the sending side device is detected on the secondary carrier is not detected.
  • the UE After the UE receives the subframe sent by the base station and parses the subframe, and finds that the subframe does not carry the indication signal, it does not detect whether there is a signal sent by the transmitting device on the secondary carrier.
  • FIG. 6 is a schematic structural diagram of Embodiment 1 of a CA-based signal transmission apparatus according to the present invention.
  • the CA-based signal transmission apparatus provided by the embodiment of the present invention includes a judging module 11 and a processing module 12.
  • the determining module 11 is configured to determine whether the secondary carrier is in the detection state of the receiving device, and the processing module 12 is configured to generate an indication signal if the determining module 11 determines that the secondary carrier is in the detection state of the receiving device, and The indication signal is carried in the subframe of the primary carrier and sent to the receiving device, so that the receiving device detects, according to the indication signal, whether there is a signal sent by the transmitting device on the secondary carrier.
  • the CA-based signal transmission apparatus determines whether the secondary carrier is in the receiving state and needs to detect the state; if the secondary carrier is in the detection state, the indication signal is generated, and the indication signal is carried on the primary carrier.
  • the subframe is sent to the receiving device, so that the receiving device detects, according to the indication signal, whether there is a signal sent by the transmitting device on the secondary carrier.
  • the transmitting device sends an indication signal to the receiving device when the secondary carrier is in the state that the receiving device needs to be detected. After receiving the indication signal, the receiving device starts detecting whether the secondary carrier has a signal sent by the transmitting device. Thereby reducing the complexity and power consumption of the communication system.
  • FIG. 7 is a schematic structural diagram of Embodiment 2 of a CA-based signal transmission apparatus according to the present invention. As shown in FIG. 7, this embodiment is based on the embodiment shown in FIG. 6, and the apparatus further includes a detection module 13 and Send module 14.
  • the processing module 12 is further configured to: set the value of the available channel assessment CCA counter to a random number N; the detecting module 13 is configured to perform CCA detection on the secondary carrier, if the detection result is that the secondary carrier is not If occupied, the value of the CCA counter is decremented by 1 and the step is repeated until the value of the CCA counter is 0, triggering the sending module 14 to send a signal on the secondary carrier; where N is an integer And greater than 0.
  • the determining module 11 includes:
  • the obtaining unit 111 acquires the current value of the CCA counter from the detecting module when the sending module 14 sends the current subframe through the primary carrier;
  • the obtaining unit 111 is further configured to: when the value of the CCA counter is greater than 0, calculate a first time corresponding to subtracting the value M from the CCA counter to 0;
  • the determining unit 112 is configured to compare the first time and the second time, where the second time is a time remaining in a current subframe of the primary carrier; if the first time is less than or equal to the first time Two times, determining that the secondary carrier is in the detection state of the receiving side device;
  • M is an integer greater than or equal to 0 and less than or equal to N.
  • the CA-based signal transmission apparatus of this embodiment may be used to implement the technical solution of the CA-based signal transmission method provided by any embodiment of the present invention, and the implementation principle and technical effects thereof are similar, and details are not described herein again.
  • FIG. 8 is a schematic structural diagram of Embodiment 3 of a CA-based signal transmission apparatus according to the present invention. As shown in FIG. 8, the present embodiment further includes a detection module 15 and a transmission module 16 on the basis of the embodiment shown in FIG. .
  • the detecting module 15 is configured to detect CCA of the secondary carrier.
  • the sending module 16 is configured to send a current subframe to the receiving side device by using the primary carrier;
  • the determining module 11 includes:
  • the obtaining unit 113 is configured to start the CCA detection of the secondary carrier by the detecting module 15 in the process that the sending module 16 sends the current subframe to the receiving side device by using the primary carrier, and
  • the value of the CCA counter is set to a random number N;
  • the obtaining unit 113 is further configured to calculate a third time that is obtained by subtracting the value N from the CCA counter to 0;
  • the determining unit 114 is configured to compare the third time and the second time, wherein the second time And determining, in the current subframe of the primary carrier, a time remaining from the initiation of the CCA to the end of the current subframe; if the third time is less than or equal to the second time, determining that the secondary carrier is on the receiving side
  • the device needs to detect the status;
  • N is an integer and is greater than zero.
  • the CA-based signal transmission apparatus of this embodiment may be used to implement the technical solution of the CA-based signal transmission method provided by any embodiment of the present invention, and the implementation principle and technical effects thereof are similar, and details are not described herein again.
  • FIG. 9 is a schematic structural diagram of Embodiment 4 of a CA-based signal transmission apparatus according to the present invention.
  • the CA-based signal transmission apparatus provided by the embodiment of the present invention includes a receiving module 21 and a detecting module 22.
  • the receiving module 21 is configured to receive a subframe that is sent by the sending device by using the primary carrier, and the detecting module 22 is configured to detect, according to the indication signal, that the subframe received by the receiving module 21 carries an indication signal. Whether there is a signal sent by the transmitting side device on the secondary carrier.
  • the CA-based signal transmission apparatus receives the subframe transmitted by the transmitting-side device through the primary carrier, and if the subframe carries the indication signal, detects whether the secondary carrier transmits the secondary carrier according to the indication signal. signal. Since the receiving side device starts to detect whether there is a signal sent by the transmitting side device only after receiving the indication signal, it does not need to perform detection at any time, thereby reducing the complexity and power consumption of the communication system.
  • the detecting module 22 is further configured to: if the indication signal received by the receiving module 21 does not carry the indication signal, do not detect whether the signal sent by the sending side device is sent on the secondary carrier.
  • the CA-based signal transmission apparatus of this embodiment may be used to implement the technical solution of the CA-based signal transmission method provided by any embodiment of the present invention, and the implementation principle and technical effects thereof are similar, and details are not described herein again.
  • FIG. 10 is a schematic structural diagram of Embodiment 1 of a transmitting device according to the present invention.
  • the transmitting side device provided by the embodiment of the present invention includes a processor 31 and a transmitter 32.
  • the processor 31 is configured to determine whether the secondary carrier is in the detection state of the receiving device, and the processor 31 is further configured to generate an indication signal if the secondary carrier is in the detection state of the receiving device, and generate the indication
  • the signal is carried in the subframe of the primary carrier, and the transmitter 32 is configured to send, by using the primary carrier, the subframe to the receiving device, according to the indication signal, Detecting whether there is a signal sent by the transmitting side device on the secondary carrier.
  • the device on the sending side of the present embodiment can be used to implement the technical solution of the CA-based signal transmission method provided by any embodiment of the present invention.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • the processor 31 is further configured to: set the value of the available channel assessment CCA counter to a random number N; the processor 31 is further configured to perform CCA detection on the secondary carrier, if the detection result is the auxiliary If the carrier is not occupied, the value of the CCA counter is decremented by 1, and the step is repeated until the value of the CCA counter is 0, and a signal is sent on the secondary carrier; where N is an integer and is greater than 0.
  • the processor 31 is further configured to: when the current subframe is sent by using the primary carrier, acquire the value M of the CCA counter; if the value of the CCA counter is greater than 0, calculate the acquisition Determining the value of the CCA counter to a first time corresponding to 0; comparing the first time and the second time, wherein the second time is a time remaining in a current subframe of the primary carrier; If the first time is less than or equal to the second time, it is determined that the secondary carrier is in the detection state of the receiving side device; where M is an integer greater than or equal to 0 and less than or equal to N.
  • the processor 31 is further configured to: initiate CCA detection on the secondary carrier, and set a value of the CCA counter in the process of sending the current subframe to the receiving side device by using the primary carrier. Setting a random number N; calculating a third time corresponding to subtracting from the value N of the CCA counter to 0; comparing the third time and the second time, wherein the second time is current of the primary carrier Determining, in the subframe, the time remaining from the start of the CCA to the end of the current subframe; if the third time is less than or equal to the second time, determining that the secondary carrier is in the detection state of the receiving device; N is an integer and is greater than zero.
  • the device on the sending side of the present embodiment can be used to implement the technical solution of the CA-based signal transmission method provided by any embodiment of the present invention.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 11 is a schematic structural diagram of Embodiment 1 of a receiving device according to the present invention.
  • the receiving side device provided by the embodiment of the present invention includes a receiver 41 and a processor 42.
  • the receiver 41 is configured to receive a subframe that is sent by the sending device by using the primary carrier, and the processor 42 is configured to: if the indicator received by the receiver 41 carries the indication signal, detect the indicator according to the indication signal. Whether there is a signal sent by the sending side device on the secondary carrier.
  • the receiving side device provided in this embodiment may be used to implement the technical solution of the CA-based signal transmission method provided by any embodiment of the present invention, and the implementation principle and technical effects thereof are similar, and details are not described herein again.
  • the processor 42 is further configured to: if the indication signal received by the receiver 41 does not carry the indication signal, whether the signal sent by the sending side device is not detected on the secondary carrier.
  • the receiving side device provided in this embodiment may be used to implement the technical solution of the CA-based signal transmission method provided by any embodiment of the present invention, and the implementation principle and technical effects thereof are similar, and details are not described herein again.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used. Combinations 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 units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application 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 a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • a computer device which may be a personal computer, server, or network device, etc.
  • processor is implemented to perform all or part of the steps of the methods described in various embodiments of the present application.
  • 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. .

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Abstract

本发明实施例涉及一种基于CA的信号传输方法、装置和设备。该方法包括：判断辅载波是否处于接收侧设备需要检测状态；若辅载波处于接收侧设备需要检测状态，则生成指示信号，并将指示信号携带在主载波的子帧中发送给接收侧设备，以供接收侧设备根据指示信号，检测辅载波上是否有发送侧设备发送的信号。本发明实施例提供的基于CA的信号传输方法、装置和设备降低了通信系统的复杂度和功耗。

Description

基于CA的信号传输方法、装置和设备 技术领域
本发明实施例涉及无线通信技术，尤其涉及一种基于CA的信号传输方法、装置和设备。
背景技术
载波汇聚(Carrier Aggregation；简称：CA)是指在通信过程中所使用的载波不仅限于一个，而是在一个主载波和若干个辅载波上同时进行通信。在授权频带辅助接入(Licensed Assisted Access；简称：LAA)中，将授权载波(Licensed carrier；简称：L-Carrier)作为主载波，将非授权载波(Unlicensed Carrier；简称：U-Carrier)作为辅载波，U-Carrier在L-Carrier的协助下进行通信。采用CA进行通信，由于增加了载波的数量，因此，可以极大的提高通信的速率。
现有技术中，在LAA中采用CA的方式进行信号的传输时，首先需要侦听U-Carrier是否被其它设备所占用，若没有，即U-Carrier处于空闲状态时，则将预设时长的数据通过U-Carrier进行发送，该预设时长的数据发送完毕后，若有信号需要继续通过U-Carrier发送，则重新侦听U-Carrier，以判断该U-Carrier是否被其它设备占用。采用CA的方式传输信号时，通常有两种模式：一种是L-Carrier和U-Carrier同步发射的模式，一种是L-Carrier和U-Carrier异步发射的模式，其中，在L-Carrier和U-Carrier同步发射的模式中，若基站检测出U-Carrier没有被其它设备占用，则向用户设备(User Equipment；简称：UE)发送前导信号，直到下一个L-Carrier的子帧边界处，然后开始向UE发送数据。在L-Carrier和U-Carrier异步发射的模式中，U-Carrier和L-Carrier的子帧边界不一定对齐。
然而，在现有的两种发射模式中，由于UE并不知道基站何时开始在U-Carrier上发送信号，因此，UE需要时刻检测U-Carrier上的信号，以接收基站发送的数据，造成通信系统的复杂度和功耗较高。
发明内容
本发明实施例提供一种基于CA的信号传输方法、装置和设备，用以减小通信系统的复杂度和功耗。
第一方面，本发明实施例提供一种基于CA的信号传输方法，包括：
判断辅载波是否处于接收侧设备需要检测状态；
若所述辅载波处于接收侧设备需要检测状态，则生成指示信号，并将所述指示信号携带在主载波的子帧中发送给所述接收侧设备，以供所述接收侧设备根据所述指示信号，检测所述辅载波上是否有发送侧设备发送的信号。
结合第一方面，在第一方面的第一种可能的实现方式中，还包括：
将可用信道评估CCA计数器的值置为随机数N；
对所述辅载波进行CCA检测，若检测结果为所述辅载波没有被占用，则将所述CCA计数器的值减1，并重复执行此步骤，直至所述CCA计数器的值为0时，在所述辅载波上发送信号；
其中，N为整数，且大于0。
结合第一方面的第一种可能的实现方式，在第一方面的第二种可能的实现方式中，所述判断辅载波是否处于接收侧设备需要检测状态，包括：
在通过所述主载波发送所述当前子帧时，获取所述CCA计数器的值M；
若所述CCA计数器的值大于0时，计算获取从所述CCA计数器的值M减至0对应的第一时间；
比较所述第一时间和第二时间，其中，所述第二时间为所述主载波的当前子帧所剩余的时间；
若所述第一时间小于或等于所述第二时间，则判断所述辅载波处于所述接收侧设备需要检测状态；
其中，M为大于或等于0，且小于或等于N的整数。
结合第一方面，在第一方面的第三种可能的实现方式中，所述判断辅载波是否处于接收侧设备需要检测状态，包括：
在通过所述主载波向所述接收侧设备发送所述当前子帧的过程中，启动对所述辅载波的CCA检测，并将CCA计数器的值置为随机数N；
计算获取从所述CCA计数器的值N减至0对应的第三时间；
比较所述第三时间和第二时间，其中，所述第二时间为所述主载波的当 前子帧中从启动CCA检测到当前子帧结束所剩余的时间；
若所述第三时间小于或等于所述第二时间，则判断所述辅载波处于所述接收侧设备需要检测状态；
其中，N为整数，且大于0。
第二方面，本发明实施例提供一种基于CA的信号传输方法，包括：
接收发送侧设备通过主载波发送的子帧；
若所述子帧中携带有指示信号，则根据所述指示信号，检测辅载波上是否有所述发送侧设备发送的信号。
结合第二方面，在第二方面的第一种可能的实现方式中，还包括：
若所述子帧中未携带有指示信号，则不检测所述辅载波上是否有所述发送侧设备发送的信号。
第三方面，本发明实施例提供一种基于CA的信号传输装置，包括：
判断模块，用于判断辅载波是否处于接收侧设备需要检测状态；
处理模块，用于若所述判断模块判断出所述辅载波处于接收侧设备需要检测状态，则生成指示信号，并将所述指示信号携带在主载波的子帧中发送给所述接收侧设备，以供所述接收侧设备根据所述指示信号，检测所述辅载波上是否有发送侧设备发送的信号。
结合第三方面，在第三方面的第一种可能的实现方式中，所述处理模块，还用于将可用信道评估CCA计数器的值置为随机数N；
则所述装置还包括：检测模块和发送模块；其中，
所述检测模块，用于对所述辅载波进行CCA检测，若检测结果为所述辅载波没有被占用，则将所述CCA计数器的值减1，并重复执行此步骤，直至所述CCA计数器的值为0时，触发所述发送模块在所述辅载波上发送信号；其中，N为整数，且大于0。
结合第三方面的第一种可能的实现方式，在第三方面的第二种可能的实现方式中，所述判断模块包括：
获取单元，在所述发送模块通过所述主载波发送所述当前子帧时，从所述检测模块中获取当前所述CCA计数器的值M；
所述获取单元，还用于若所述CCA计数器的值大于0时，计算获取从所述CCA计数器的值M减至0对应的第一时间；
判断单元，用于比较所述第一时间和第二时间，其中，所述第二时间为所述主载波的当前子帧所剩余的时间；若所述第一时间小于或等于所述第二时间，则判断所述辅载波处于所述接收侧设备需要检测状态；
其中，M为大于或等于0，且小于或等于N的整数。
结合第三方面，在第三方面的第三种可能的实现方式中，还包括：检测模块和发送模块；其中，
所述检测模块，用于对所述辅载波的CCA检测；
所述发送模块，用于通过所述主载波向所述接收侧设备发送当前子帧；
则所述判断模块包括：
获取单元，用于在所述发送模块通过所述主载波向所述接收侧设备发送所述当前子帧的过程中，启动所述检测模块对所述辅载波的CCA检测，并将CCA计数器的值置为随机数N；
所述获取单元，还用于计算获取从所述CCA计数器的值N减至0对应的第三时间；
判断单元，用于比较所述第三时间和第二时间，其中，所述第二时间为所述主载波的当前子帧中从启动CCA检测到当前子帧结束所剩余的时间；若所述第三时间小于或等于所述第二时间，则判断所述辅载波处于所述接收侧设备需要检测状态；
其中，N为整数，且大于0。
第四方面，本发明实施例提供一种基于CA的信号传输装置，包括：
接收模块，用于接收发送侧设备通过主载波发送的子帧；
检测模块，用于若所述接收模块接收的所述子帧中携带有指示信号，则根据所述指示信号，检测辅载波上是否有所述发送侧设备发送的信号。
结合第四方面，在第四方面的第一种可能的实现方式中，所述检测模块，还用于若所述接收模块接收的所述子帧中未携带有指示信号，则不检测所述辅载波上是否有所述发送侧设备发送的信号。
第五方面，本发明实施例提供一种发送侧设备，包括：
处理器，用于判断辅载波是否处于接收侧设备需要检测状态；
所述处理器，还用于若所述辅载波处于接收侧设备需要检测状态，则生成指示信号，并将所述指示信号携带在主载波的子帧中；
发送器，用于通过所述主载波向接收侧设备发送所述子帧，以供所述接收侧设备根据所述指示信号，检测所述辅载波上是否有发送侧设备发送的信号。
结合第五方面，在第五方面的第一种可能的实现方式中，还包括：
所述处理器，还用于将可用信道评估CCA计数器的值置为随机数N；
所述处理器，还用于对所述辅载波进行CCA检测，若检测结果为所述辅载波没有被占用，则将所述CCA计数器的值减1，并重复执行此步骤，直至所述CCA计数器的值为0时，在所述辅载波上发送信号；其中，N为整数，且大于0。
结合第五方面的第一种可能的实现方式，在第五方面的第二种可能的实现方式中，所述处理器，还用于在通过所述主载波发送所述当前子帧时，获取所述CCA计数器的值M；若所述CCA计数器的值大于0时，计算获取从所述CCA计数器的值M减至0对应的第一时间；比较所述第一时间和第二时间，其中，所述第二时间为所述主载波的当前子帧所剩余的时间；若所述第一时间小于或等于所述第二时间，则判断所述辅载波处于所述接收侧设备需要检测状态；其中，M为大于或等于0，且小于或等于N的整数。
结合第五方面，在第五方面的第三种可能的实现方式中，所述处理器，还用于在通过所述主载波向所述接收侧设备发送所述当前子帧的过程中，启动对所述辅载波的CCA检测，并将CCA计数器的值置为随机数N；计算获取从所述CCA计数器的值N减至0对应的第三时间；比较所述第三时间和第二时间，其中，所述第二时间为所述主载波的当前子帧中从启动CCA检测到当前子帧结束所剩余的时间；若所述第三时间小于或等于所述第二时间，则判断所述辅载波处于所述接收侧设备需要检测状态；其中，N为整数，且大于0。
第六方面，本发明实施例提供一种接收侧设备，包括：
接收器，用于接收发送侧设备通过主载波发送的子帧；
处理器，用于若所述接收器接收的所述子帧中携带有指示信号，则根据所述指示信号，检测所述辅载波上是否有所述发送侧设备发送的信号。
结合第六方面，在第六方面的第一种可能的实现方式中，所述处理器，还用于若所述接收器接收的所述子帧中未携带有指示信号，则不检测所述辅 载波上是否有所述发送侧设备发送的信号。
本发明实施例提供的基于CA的信号传输方法、装置和设备，通过判断辅载波是否处于接收侧设备需要检测状态；若辅载波处于接收侧设备需要检测状态，则生成指示信号，并将指示信号携带在主载波的子帧中发送给接收侧设备，以供接收侧设备根据指示信号，检测辅载波上是否有发送侧设备发送的信号。由于发送侧设备在辅载波处于接收侧设备需要检测的状态时向接收侧设备发送指示信号，以使接收侧设备在接收到指示信号之后才开始检测辅载波上是否有发送侧设备发送的信号，从而降低了通信系统的复杂度和功耗。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明基于CA的信号传输方法实施例一的流程示意图；
图2为本发明基于CA的信号传输方法实施例二的流程示意图；
图3为本发明基于CA的信号传输方法实施例三的流程示意图；
图4为本发明基于CA的信号传输方法实施例四的流程示意图；
图5为本发明基于CA的信号传输方法实施例五的流程示意图；
图6为本发明基于CA的信号传输装置实施例一的结构示意图；
图7为本发明基于CA的信号传输装置实施例二的结构示意图；
图8为本发明基于CA的信号传输装置实施例三的结构示意图；
图9为本发明基于CA的信号传输装置实施例四的结构示意图；
图10为本发明提供的发送侧设备实施例一的结构示意图；
图11为本发明提供的接收侧设备实施例一的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚地描述，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做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。
图1为本发明基于CA的信号传输方法实施例一的流程示意图。本发明实施例提供了一种基于CA的信号传输方法，本实施例的执行主体为发送侧设备，例如可以为基站或者UE，当发送侧设备为基站时，对应的接收侧设备为UE，当发送侧设备为UE时，对应的接收侧设备为基站。本实施例中以基站为发送侧设备，UE为接收侧设备为例进行详细说明，若以UE为发送侧设备，基站为接收侧设备时的处理过程与其类似，此处不再赘述。如图1所示，本实施例的方法可以包括：
步骤101、判断辅载波是否处于接收侧设备需要检测状态。
在本实施例中，以主载波为L-Carrier，辅载波为U-Carrier为例进行详细说明。与L-Carrier不同的是，通过U-Carrier传输信号时，U-Carrier要遵循和其它系统(例如WiFi等)进行公平共享资源的原则。在实际应用中，基站首先要对U-Carrier进行可用信道评估(Clear Channel Assessment；简称：CCA)检测，若U-Carrier载波没有被其它设备占用，即处于空闲状态时，则在U-Carrier上进行信号的传输。因此，基站通过判断辅载波在预设时间段内处于空闲状态的可能性，从而确定辅载波是否处于UE需要检测状态，若辅载波在预设时间段内处于空闲状态的可能性较大，则其处于UE需要检测状态，否则，UE不对辅载波进行检测。
步骤102、若辅载波处于接收侧设备需要检测状态，则生成指示信号，并将指示信号携带在主载波的子帧中发送给接收侧设备，以供接收侧设备根据指示信号，检测辅载波上是否有发送侧设备发送的信号。
在本实施例中，基站可以在判断辅载波是否处于UE需要检测状态之前或之后，通过主载波向UE发送子帧。另外，若基站通过判断获知U-Carrier处于UE需要检测状态，则生成一个指示信号，并将该指示信号携带在主载波的子帧中发送给UE，当UE接收到该指示信号之后，根据指示信号从本子帧开始对U-Carrier进行检测，以获知基站是否通过U-Carrier进行信号的传输，若UE在本子帧内检测到U-Carrier上有基站发送的信号，则基站和UE开始在U-Carrier上进行通信。由此可见，UE只在接收到指示信号之后才开始检测U-Carrier，以便进行数据的接收，而不是时刻对U-Carrier进行检测， 从而降低了通信系统的复杂度和功耗。
另外，指示信号可以为L-Carrier上的一个新的信道中承载的信号，例如通过设计一个新的物理非授权指示信道(Physical Unlicensed Indicator Channel；简称：PUICH)，在该信道中承载指示信号；也可以是现有的物理下行控制信道(Physical Downlink Control Channel；简称：PDCCH)/增强型物理下行控制信道(enhanced physical downlink control channel；简称：ePDCCH)/物理控制格式指示信道(Physical Control Format Indicator Channel；简称：PCFICH)中经重新解释后的信号。对于指示信号的具体实现方式，本发明在此不作特别限制。
本发明实施例提供的基于CA的信号传输方法，通过判断辅载波是否处于接收侧设备需要检测状态；若辅载波处于接收侧设备需要检测状态，则生成指示信号，并将指示信号携带在主载波的子帧中发送给接收侧设备，以供接收侧设备根据指示信号，检测辅载波上是否有发送侧设备发送的信号。由于发送侧设备在辅载波处于接收侧设备需要检测的状态时，向该接收侧设备发送指示信号，接收侧设备在接收到指示信号之后才开始检测辅载波上是否有发送侧设备发送的信号，从而降低了通信系统的复杂度和功耗。
图2为本发明基于CA的信号传输方法实施例二的流程示意图。本实施例在图1所示实施例的基础上，对在辅载波上发送信号的实施例，做详细说明。如图2所示，本实施例的方法可以包括：
步骤201、将CCA计数器的值置为随机数N；其中，N为整数，且大于0。
在本实施例中，由于在U-Carrier上传输数据之前，需要先对U-Carrier进行侦听，以检测该U-Carrier有没有被其它设备所占用，即是否处于空闲状态。在具体的实现过程中，可以通过能量检测或信号检测等方法对该U-Carrier的状态进行侦听。本实施例中以能量检测为例进行说明，具体地，基站通过在预设时间段内检测U-Carrier信道上的信号功率值，判断该信号功率值是否超过预设阈值，若超过，则说明U-Carrier被其它设备所占用，若没有超过该预设阈值，则说明U-Carrier处于空闲状态，其中，预设时间段和预设阈值的取值可以根据经验或者实际情况进行选择，对于预设时间段和预设阈值的具体值的选取，本实施例在此不作特别限制。例如：基站采用能量检测的方式 对U-Carrier进行侦听时，通过持续检测20us后，如果检测到的信号功率超过-62dBm，则认为该U-Carrier被其它设备所占用。在实际应用过程中，一般通过结合CCA计数器的方式，对U-Carrier进行N次检测，以提高检测的准确性。具体地，开始检测时，将CCA计数器的值置为N，其中，N为在预设数值范围内随机选取的一个大于0的整数，预设数值范围例如可以为4-32，对于预设数值范围，本实施例在此不作特别限制。
步骤202、对辅载波进行CCA检测，若检测结果为辅载波没有被占用，则将CCA计数器的值减1，并重复执行此步骤，直至CCA计数器的值为0时，在辅载波上发送信号。
在本实施例中，将CCA计数器的值置为N之后，基站开始不断的侦听辅载波的状态，若每侦听一次，发现该辅载波没有被其它设备所占用，则将CCA计数器的值减1。如果在CCA计数器的值减到0之前，某一次CCA检测的结果是辅载波被其它设备所占用，则将CCA计数器当前的值清零，并重新在预设的数值范围内随机选取一个N’值，将CCA计数器的值置为N’，重新开始检测，并不断地重复这个过程，直到CCA计数器的值减到0时，基站才可以在辅载波上发送信号。
需要进行说明的是，通过辅载波发送一定时长的信号之后，若需要继续发送信号，则必须对辅载波进行重新侦听，当确认没有其它设备占用辅载波后，才能继续发送，若侦听之后发现该辅载波被其它设备占用了，则基站就需要等待，直到辅载波处于空闲状态后，才可以继续发送。若辅载波在预设时间段内一直处于被占用的状态，则基站通过主载波发送信号，或将待发送的数据进行丢弃。在具体的实现过程中，可根据经验或者业务类型选择合适的预设时间段，例如，当业务类型为语音通话时，将预设时间段选取为80ms，当浏览网页时，将预设时间段选取为2s等。对于预设时间段的具体值的选取，本实施例在此不作特别限制。
本发明实施例提供的基于CA的信号传输方法，通过判断辅载波是否处于接收侧设备需要检测状态；若辅载波处于接收侧设备需要检测状态，则生成指示信号，并将指示信号携带在主载波的子帧中发送给接收侧设备，以供接收侧设备根据指示信号，检测辅载波上是否有发送侧设备发送的信号。由于发送侧设备在辅载波处于接收侧设备需要检测的状态时，向该接收侧设备 发送指示信号，接收侧设备在接收到指示信号之后才开始检测辅载波上是否有发送侧设备发送的信号，从而降低了通信系统的复杂度和功耗。另外，当检测到辅载波没有被其它设备占用时，发送侧设备可以通过辅载波发送信号，由于通过主载波和辅载波同时进行通信，增加了载波的数量，从而极大地提高了通信的速率。
图3为本发明基于CA的信号传输方法实施例三的流程示意图。本实施例在图1和图2所示实施例的基础上，对判断辅载波是否处于接收侧设备需要检测状态的实施例，做详细说明。如图3所示，本实施例的方法可以包括：
步骤301、在通过主载波发送当前子帧时，获取CCA计数器的值M，其中，M为大于或等于0，且小于或等于N的整数。
在本实施例中，若在通过主载波发送当前子帧之前，基站就已经开始检测辅载波的状态，而且在基站通过主载波发送当前子帧时，该检测过程还在继续，此时，可以获取到CCA计数器的数值M。具体地，若基站在检测辅载波的状态的过程中，发现该辅载波没有被其它设备所占用，则数值M为CCA计数器的初始值N随着检测次数不断的减1之后，得到的结果，此时，M为大于或等于0，且小于N的整数；若在基站通过主载波发送当前子帧时，由于辅载波被其它设备所占用，此时，需要对CCA计数器的值在预设数值范围内重新选取，并将重新选取的数值作为CCA计数器的值M，则M有可能等于N，也有可能小于N。
步骤302、若CCA计数器的值大于0时，计算获取从CCA计数器的值M减至0对应的第一时间。
在本实施例中，当获取到CCA计数器的值M后，计算从CCA计数器的值M减至0对应的第一时间，即基站对辅载波的状态检测M次所需要的时间。例如，获取到的CCA计数器的值M为21，假设对辅载波检测一次所需要的时间为20us，则计算获取到的第一时间为420us。
步骤303、比较第一时间和第二时间，其中，第二时间为主载波的当前子帧所剩余的时间。
在本实施例中，本领域技术人员可以理解，基站通过无线帧进行数据的传输时，其中，一个无线帧的周期为10ms，其包括10个子帧。因此，每发送一个子帧所需要的时间为1ms。由于第一时间是在基站发送当前子帧之前 就已经获得，因此，主载波的当前子帧所剩余的时间为发送整个当前子帧所需要的时间，即第二时间为1ms。
步骤304、若第一时间小于或等于第二时间，则判断辅载波处于接收侧设备需要检测状态。
在本实施例中，对第一时间和第二时间进行比较之后，若第一时间小于或等于第二时间，则说明在通过主载波发送当前子帧期间内，已经启动的CCA计数器有可能会减到0，此时，将获知辅载波处于UE需要检测状态，而且基站会生成一个指示信号，并将该指示信号携带在当前子帧中，发送给UE。
需要进行说明的是，第一时间是假设辅载波一直没有被其它设备所占用，连续的检测M次所需要的时间，若第一时间小于或等于第二时间，并不能说明辅载波在第二时间内是处于空闲状态的。例如：在通过主载波向接收侧设备发送当前子帧时，计算获知第一时间小于或等于第二时间，此时，会将指示信号携带在当前子帧中发送给UE。但是，对辅载波状态的检测过程会继续进行，若在检测过程中，发现辅载波被其它设备占用了，此时，便不能通过辅载波进行信号的传输。在这种情况下，当UE接收到指示信号之后，虽然会根据指示信号对辅载波进行检测，但是不一定会在辅载波上检测到基站发送的信号。
本发明实施例提供的基于CA的信号传输方法，通过判断辅载波是否处于接收侧设备需要检测状态；若辅载波处于接收侧设备需要检测状态，则生成指示信号，并将指示信号携带在主载波的子帧中发送给接收侧设备，以供接收侧设备根据指示信号，检测辅载波上是否有发送侧设备发送的信号。由于发送侧设备在辅载波处于接收侧设备需要检测的状态时，向该接收侧设备发送指示信号，接收侧设备在接收到指示信号之后才开始检测辅载波上是否有发送侧设备发送的信号，从而降低了通信系统的复杂度和功耗。另外，通过比较从CCA计数器的值M减至0对应的第一时间，和通过主载波发送当前子帧所剩余的第二时间之间的大小，得出辅载波是否处于接收侧设备需要检测状态，从而决定是否对接收侧设备发送指示信号，由此可以最大效率的利用辅载波进行信号的传输。
图4为本发明基于CA的信号传输方法实施例四的流程示意图。本实施例在图1所示实施例的基础上，对判断辅载波是否处于接收侧设备需要检测 状态的实施例，做详细说明。本实施例与实施例三的不同之处在于：若在通过主载波向接收侧设备发送当前子帧的过程中，开始对辅载波进行CCA检测时，如何判断辅载波是否处于接收侧设备需要检测状态。如图4所示，本实施例的方法可以包括：
步骤401、在通过主载波向接收侧设备发送当前子帧的过程中，启动对辅载波的CCA检测，并将CCA计数器的值置为随机数N，其中，N为整数，且大于0。
在本实施例中，在基站通过主载波向UE发送当前子帧的过程中，若在判断辅载波是否处于接收侧设备需要检测状态时，基站启动对辅载波状态的CCA检测，此时，从预设的数值范围内随机选取一个数值N，作为CCA计数器的值。
步骤402、计算获取从CCA计数器的值N减至0对应的第三时间。
在本实施例中，当获取到CCA计数器的值N后，计算从CCA计数器的值N减至0对应的第三时间，即基站对辅载波的状态检测N次所需要的时间。
步骤403、比较第三时间和第二时间，其中，第二时间为主载波的当前子帧中从启动CCA检测到当前子帧结束所剩余的时间。
在本实施例中，每发送一个无线帧中的一个子帧所需要的时间为1ms，而由于在基站发送当前子帧的过程中才启动对辅载波的CCA检测，即才获得第三时间，因此，第二时间为主载波的当前子帧中从启动CCA检测到当前子帧结束所剩余的时间，例如：在开始发送当前子帧后的200us时，基站才计算获得第三时间，此时，基站将得到的第三时间，与在主载波的当前子帧中从启动CCA检测到当前子帧结束所剩余的时间800us进行比较。
步骤404、若第三时间小于或等于第二时间，则判断辅载波处于接收侧设备需要检测状态。
在本实施例中，对第三时间和第二时间进行比较之后，若第三时间小于或等于第二时间，则说明基站在通过主载波发送的当前子帧在结束之前，开始启动的CCA计数器有可能会减到0，此时，将判断获知辅载波处于UE需要检测状态，因此基站会生成指示信号，并将该指示信号携带在主载波的当前子帧中，发送给UE。
需要进行说明的是，第三时间是假设辅载波一直没有被其它设备所占用， 连续的检测N次所需要的时间，若第三时间小于或等于第二时间，并不能说明辅载波在第二时间内是处于空闲状态的。例如：在通过主载波向UE发送当前子帧时，计算获知第三时间小于或等于第二时间，此时，基站会将指示信号携带在主载波的当前子帧中发送给UE。但是，对辅载波状态的检测过程继续进行，若在检测过程中，发现辅载波被其它设备占用了，此时，便不能通过辅载波进行信号的传输。在这种情况下，当UE接收到指示信号之后，虽然会根据指示信号对辅载波进行检测，但是在辅载波上不一定能检测到发送侧设备发送的信号。
本发明实施例提供的基于CA的信号传输方法，通过判断辅载波是否处于接收侧设备需要检测状态；若辅载波处于接收侧设备需要检测状态，则生成指示信号，并将指示信号携带在主载波的子帧中发送给接收侧设备，以供接收侧设备根据指示信号，检测辅载波上是否有发送侧设备发送的信号。由于发送侧设备在辅载波处于接收侧设备需要检测的状态时，向该接收侧设备发送指示信号，接收侧设备在接收到指示信号之后才开始检测辅载波上是否有发送侧设备发送的信号，从而降低了通信系统的复杂度和功耗。另外，通过比较从CCA计数器的值N减至0对应的第三时间，和主载波的当前子帧从启动CCA检测到当前子帧结束所剩余的第二时间之间的大小，得出辅载波是否处于接收侧设备需要检测状态，从而决定是否对接收侧设备发送指示信号，由此可以最大效率的利用辅载波进行信号的传输。
图5为本发明基于CA的信号传输方法实施例五的流程示意图。本发明实施例提供了一种基于CA的信号传输方法，本实施例的执行主体为接收侧设备，例如可以为基站或者UE，当发送侧设备为基站时，对应的接收侧设备为UE，当发送侧设备为UE时，对应的接收侧设备为基站。本实施例中以基站为发送侧设备，UE为接收侧设备为例进行说明。如图5所示，本实施例的方法可以包括：
步骤501、接收发送侧设备通过主载波发送的子帧。
步骤502、若子帧中携带有指示信号，则根据指示信号，检测辅载波上是否有发送侧设备发送的信号。
在本实施例中，当基站判断出辅载波处于UE需要检测状态时，将生成的指示信号携带在当前正在发送的子帧中，并将该子帧发送给UE。UE在接 收到基站发送的子帧后，会对该子帧进行解析，若子帧中携带有指示信号，则根据该指示信号，从本子帧开始对辅载波进行侦听，以检测该辅载波上是否有发送侧设备发送的信号。若在本子帧内检测到辅载波上有发送侧设备发送的信号，则基站和UE开始在辅载波上进行通信。
本发明实施例提供的基于CA的信号传输方法，通过接收发送侧设备通过主载波发送的子帧，若子帧中携带有指示信号，则根据指示信号，检测辅载波上是否有发送侧设备发送的信号。由于接收侧设备只在接收到指示信号之后才开始检测辅载波上是否有发送侧设备发送的信号，而不需要时时进行检测，从而降低了通信系统的复杂度和功耗。
可选地，如上所述的方法实施例，若子帧中未携带有指示信号，则不检测辅载波上是否有发送侧设备发送的信号。
具体地，当UE接收到基站发送的子帧并对该子帧进行解析之后，发现子帧中未携带有指示信号，则不检测辅载波上是否有发送侧设备发送的信号。
图6为本发明基于CA的信号传输装置实施例一的结构示意图。如图6所示，本发明实施例提供的基于CA的信号传输装置包括判断模块11和处理模块12。
其中，判断模块11用于判断辅载波是否处于接收侧设备需要检测状态；处理模块12用于若所述判断模块11判断出所述辅载波处于接收侧设备需要检测状态，则生成指示信号，并将所述指示信号携带在主载波的子帧中发送给所述接收侧设备，以供所述接收侧设备根据所述指示信号，检测所述辅载波上是否有发送侧设备发送的信号。
本发明实施例提供的基于CA的信号传输装置，通过判断辅载波是否处于接收侧设备需要检测状态；若辅载波处于接收侧设备需要检测状态，则生成指示信号，并将指示信号携带在主载波的子帧中发送给接收侧设备，以供接收侧设备根据指示信号，检测辅载波上是否有发送侧设备发送的信号。由于发送侧设备在辅载波处于接收侧设备需要检测的状态时，向该接收侧设备发送指示信号，接收侧设备在接收到指示信号之后才开始检测辅载波上是否有发送侧设备发送的信号，从而降低了通信系统的复杂度和功耗。
图7为本发明基于CA的信号传输装置实施例二的结构示意图，如图7所示，本实施例在图6所示实施例的基础上，所述装置还包括检测模块13和 发送模块14。
其中，所述处理模块12还用于将可用信道评估CCA计数器的值置为随机数N；所述检测模块13用于对所述辅载波进行CCA检测，若检测结果为所述辅载波没有被占用，则将所述CCA计数器的值减1，并重复执行此步骤，直至所述CCA计数器的值为0时，触发所述发送模块14在所述辅载波上发送信号；其中，N为整数，且大于0。
可选地，所述判断模块11包括：
获取单元111在所述发送模块14通过所述主载波发送所述当前子帧时，从所述检测模块中获取当前所述CCA计数器的值M；
所述获取单元111还用于若所述CCA计数器的值大于0时，计算获取从所述CCA计数器的值M减至0对应的第一时间；
判断单元112，用于比较所述第一时间和第二时间，其中，所述第二时间为所述主载波的当前子帧所剩余的时间；若所述第一时间小于或等于所述第二时间，则判断所述辅载波处于所述接收侧设备需要检测状态；
其中，M为大于或等于0，且小于或等于N的整数。
本实施例的基于CA的信号传输装置，可以用于执行本发明任意实施例所提供的基于CA的信号传输方法的技术方案，其实现原理和技术效果类似，此处不再赘述。
图8为本发明基于CA的信号传输装置实施例三的结构示意图，如图8所示，本实施例在图6所示实施例的基础上，所述装置还包括检测模块15和发送模块16。
其中，所述检测模块15用于对所述辅载波的CCA检测；
所述发送模块16用于通过所述主载波向所述接收侧设备发送当前子帧；
则所述判断模块11包括：
获取单元113，用于在所述发送模块16通过所述主载波向所述接收侧设备发送所述当前子帧的过程中，启动所述检测模块15对所述辅载波的CCA检测，并将CCA计数器的值置为随机数N；
所述获取单元113还用于计算获取从所述CCA计数器的值N减至0对应的第三时间；
判断单元114用于比较所述第三时间和第二时间，其中，所述第二时间 为所述主载波的当前子帧中从启动CCA检测到当前子帧结束所剩余的时间；若所述第三时间小于或等于所述第二时间，则判断所述辅载波处于所述接收侧设备需要检测状态；
其中，N为整数，且大于0。
本实施例的基于CA的信号传输装置，可以用于执行本发明任意实施例所提供的基于CA的信号传输方法的技术方案，其实现原理和技术效果类似，此处不再赘述。
图9为本发明基于CA的信号传输装置实施例四的结构示意图。如图9所示，本发明实施例提供的基于CA的信号传输装置包括接收模块21和检测模块22。
其中，接收模块21用于接收发送侧设备通过主载波发送的子帧；检测模块22用于若所述接收模块21接收的所述子帧中携带有指示信号，则根据所述指示信号，检测辅载波上是否有所述发送侧设备发送的信号。
本发明实施例提供的基于CA的信号传输装置，通过接收发送侧设备通过主载波发送的子帧，若子帧中携带有指示信号，则根据指示信号，检测辅载波上是否有发送侧设备发送的信号。由于接收侧设备只在接收到指示信号之后才开始检测辅载波上是否有发送侧设备发送的信号，而不需要时时进行检测，从而降低了通信系统的复杂度和功耗。
可选地，所述检测模块22还用于若所述接收模块21接收的所述子帧中未携带有指示信号，则不检测所述辅载波上是否有所述发送侧设备发送的信号。
本实施例的基于CA的信号传输装置，可以用于执行本发明任意实施例所提供的基于CA的信号传输方法的技术方案，其实现原理和技术效果类似，此处不再赘述。
图10为本发明提供的发送侧设备实施例一的结构示意图。如图10所示，本发明实施例提供的发送侧设备包括处理器31和发送器32。
其中，处理器31用于判断辅载波是否处于接收侧设备需要检测状态；所述处理器31还用于若所述辅载波处于接收侧设备需要检测状态，则生成指示信号，并将所述指示信号携带在主载波的子帧中；发送器32用于通过所述主载波向接收侧设备发送所述子帧，以供所述接收侧设备根据所述指示信号， 检测所述辅载波上是否有发送侧设备发送的信号。
本实施例提供的发送侧设备，可以用于执行本发明任意实施例所提供的基于CA的信号传输方法的技术方案，其实现原理和技术效果类似，此处不再赘述。
可选地，所述处理器31还用于将可用信道评估CCA计数器的值置为随机数N；所述处理器31还用于对所述辅载波进行CCA检测，若检测结果为所述辅载波没有被占用，则将所述CCA计数器的值减1，并重复执行此步骤，直至所述CCA计数器的值为0时，在所述辅载波上发送信号；其中，N为整数，且大于0。
可选地，所述处理器31还用于在通过所述主载波发送所述当前子帧时，获取所述CCA计数器的值M；若所述CCA计数器的值大于0时，计算获取从所述CCA计数器的值M减至0对应的第一时间；比较所述第一时间和第二时间，其中，所述第二时间为所述主载波的当前子帧所剩余的时间；若所述第一时间小于或等于所述第二时间，则判断所述辅载波处于所述接收侧设备需要检测状态；其中，M为大于或等于0，且小于或等于N的整数。
可选地，所述处理器31还用于在通过所述主载波向所述接收侧设备发送所述当前子帧的过程中，启动对所述辅载波的CCA检测，并将CCA计数器的值置为随机数N；计算获取从所述CCA计数器的值N减至0对应的第三时间；比较所述第三时间和第二时间，其中，所述第二时间为所述主载波的当前子帧中从启动CCA检测到当前子帧结束所剩余的时间；若所述第三时间小于或等于所述第二时间，则判断所述辅载波处于所述接收侧设备需要检测状态；其中，N为整数，且大于0。
本实施例提供的发送侧设备，可以用于执行本发明任意实施例所提供的基于CA的信号传输方法的技术方案，其实现原理和技术效果类似，此处不再赘述。
图11为本发明提供的接收侧设备实施例一的结构示意图。如图11所示，本发明实施例提供的接收侧设备包括接收器41和处理器42。
其中，接收器41用于接收发送侧设备通过主载波发送的子帧；处理器42用于若所述接收器41接收的所述子帧中携带有指示信号，则根据所述指示信号，检测所述辅载波上是否有所述发送侧设备发送的信号。
本实施例提供的接收侧设备，可以用于执行本发明任意实施例所提供的基于CA的信号传输方法的技术方案，其实现原理和技术效果类似，此处不再赘述。
可选地，所述处理器42还用于若所述接收器41接收的所述子帧中未携带有指示信号，则不检测所述辅载波上是否有所述发送侧设备发送的信号。
本实施例提供的接收侧设备，可以用于执行本发明任意实施例所提供的基于CA的信号传输方法的技术方案，其实现原理和技术效果类似，此处不再赘述。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，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。上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，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，所述模块或单元的划分，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，在本申请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，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本 申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (18)

  1. 一种基于CA的信号传输方法，其特征在于，包括：
    判断辅载波是否处于接收侧设备需要检测状态；
    若所述辅载波处于接收侧设备需要检测状态，则生成指示信号，并将所述指示信号携带在主载波的子帧中发送给所述接收侧设备，以供所述接收侧设备根据所述指示信号，检测所述辅载波上是否有发送侧设备发送的信号。
  2. 根据权利要求1所述的方法，其特征在于，还包括：
    将可用信道评估CCA计数器的值置为随机数N；
    对所述辅载波进行CCA检测，若检测结果为所述辅载波没有被占用，则将所述CCA计数器的值减1，并重复执行此步骤，直至所述CCA计数器的值为0时，在所述辅载波上发送信号；
    其中，N为整数，且大于0。
  3. 根据权利要求2所述的方法，其特征在于，所述判断辅载波是否处于接收侧设备需要检测状态，包括：
    在通过所述主载波发送所述当前子帧时，获取所述CCA计数器的值M；
    若所述CCA计数器的值大于0时，计算获取从所述CCA计数器的值M减至0对应的第一时间；
    比较所述第一时间和第二时间，其中，所述第二时间为所述主载波的当前子帧所剩余的时间；
    若所述第一时间小于或等于所述第二时间，则判断所述辅载波处于所述接收侧设备需要检测状态；
    其中，M为大于或等于0，且小于或等于N的整数。
  4. 根据权利要求1所述的方法，其特征在于，所述判断辅载波是否处于接收侧设备需要检测状态，包括：
    在通过所述主载波向所述接收侧设备发送所述当前子帧的过程中，启动对所述辅载波的CCA检测，并将CCA计数器的值置为随机数N；
    计算获取从所述CCA计数器的值N减至0对应的第三时间；
    比较所述第三时间和第二时间，其中，所述第二时间为所述主载波的当前子帧从启动CCA检测到所述当前子帧结束所剩余的时间；
    若所述第三时间小于或等于所述第二时间，则判断所述辅载波处于所述 接收侧设备需要检测状态；
    其中，N为整数，且大于0。
  5. 一种基于CA的信号传输方法，其特征在于，包括：
    接收发送侧设备通过主载波发送的子帧；
    若所述子帧中携带有指示信号，则根据所述指示信号，检测辅载波上是否有所述发送侧设备发送的信号。
  6. 根据权利要求5所述的方法，其特征在于，还包括：
    若所述子帧中未携带有指示信号，则不检测所述辅载波上是否有所述发送侧设备发送的信号。
  7. 一种基于CA的信号传输装置，其特征在于，包括：
    判断模块，用于判断辅载波是否处于接收侧设备需要检测状态；
    处理模块，用于若所述判断模块判断出所述辅载波处于接收侧设备需要检测状态，则生成指示信号，并将所述指示信号携带在主载波的子帧中发送给所述接收侧设备，以供所述接收侧设备根据所述指示信号，检测所述辅载波上是否有发送侧设备发送的信号。
  8. 根据权利要求7所述的装置，其特征在于，所述处理模块，还用于将可用信道评估CCA计数器的值置为随机数N；
    则所述装置还包括：检测模块和发送模块；其中，
    所述检测模块，用于对所述辅载波进行CCA检测，若检测结果为所述辅载波没有被占用，则将所述CCA计数器的值减1，并重复执行此步骤，直至所述CCA计数器的值为0时，触发所述发送模块在所述辅载波上发送信号；其中，N为整数，且大于0。
  9. 根据权利要求8所述的装置，其特征在于，所述判断模块包括：
    获取单元，在所述发送模块通过所述主载波发送所述当前子帧时，从所述检测模块中获取当前所述CCA计数器的值M；
    所述获取单元，还用于若所述CCA计数器的值大于0时，计算获取从所述CCA计数器的值M减至0对应的第一时间；
    判断单元，用于比较所述第一时间和第二时间，其中，所述第二时间为所述主载波的当前子帧所剩余的时间；若所述第一时间小于或等于所述第二时间，则判断所述辅载波处于所述接收侧设备需要检测状态；
    其中，M为大于或等于0，且小于或等于N的整数。
  10. 根据权利要求7所述的装置，其特征在于，还包括：检测模块和发送模块；其中，
    所述检测模块，用于对所述辅载波的CCA检测；
    所述发送模块，用于通过所述主载波向所述接收侧设备发送当前子帧；
    则所述判断模块包括：
    获取单元，用于在所述发送模块通过所述主载波向所述接收侧设备发送所述当前子帧的过程中，启动所述检测模块对所述辅载波的CCA检测，并将CCA计数器的值置为随机数N；
    所述获取单元，还用于计算获取从所述CCA计数器的值N减至0对应的第三时间；
    判断单元，用于比较所述第三时间和第二时间，其中，所述第二时间为所述主载波的当前子帧中从启动CCA检测到当前子帧结束所剩余的时间；若所述第三时间小于或等于所述第二时间，则判断所述辅载波处于所述接收侧设备需要检测状态；
    其中，N为整数，且大于0。
  11. 一种基于CA的信号传输装置，其特征在于，包括：
    接收模块，用于接收发送侧设备通过主载波发送的子帧；
    检测模块，用于若所述接收模块接收的所述子帧中携带有指示信号，则根据所述指示信号，检测辅载波上是否有所述发送侧设备发送的信号。
  12. 根据权利要求11所述的装置，其特征在于，所述检测模块，还用于若所述接收模块接收的所述子帧中未携带有指示信号，则不检测所述辅载波上是否有所述发送侧设备发送的信号。
  13. 一种发送侧设备，其特征在于，包括：
    处理器，用于判断辅载波是否处于接收侧设备需要检测状态；
    所述处理器，还用于若所述辅载波处于接收侧设备需要检测状态，则生成指示信号，并将所述指示信号携带在主载波的子帧中；
    发送器，用于通过所述主载波向接收侧设备发送所述子帧，以供所述接收侧设备根据所述指示信号，检测所述辅载波上是否有发送侧设备发送的信号。
  14. 根据权利要求13所述的发送侧设备，其特征在于，所述处理器，还用于将可用信道评估CCA计数器的值置为随机数N；
    所述处理器，还用于对所述辅载波进行CCA检测，若检测结果为所述辅载波没有被占用，则将所述CCA计数器的值减1，并重复执行此步骤，直至所述CCA计数器的值为0时，在所述辅载波上发送信号；其中，N为整数，且大于0。
  15. 根据权利要求14所述的发送侧设备，其特征在于，所述处理器，还用于在通过所述主载波发送所述当前子帧时，获取所述CCA计数器的值M；若所述CCA计数器的值大于0时，计算获取从所述CCA计数器的值M减至0对应的第一时间；比较所述第一时间和第二时间，其中，所述第二时间为所述主载波的当前子帧所剩余的时间；若所述第一时间小于或等于所述第二时间，则判断所述辅载波处于所述接收侧设备需要检测状态；其中，M为大于或等于0，且小于或等于N的整数。
  16. 根据权利要求13所述的发送侧设备，其特征在于，所述处理器，还用于在通过所述主载波向所述接收侧设备发送所述当前子帧的过程中，启动对所述辅载波的CCA检测，并将CCA计数器的值置为随机数N；计算获取从所述CCA计数器的值N减至0对应的第三时间；比较所述第三时间和第二时间，其中，所述第二时间为所述主载波的当前子帧中从启动CCA检测到当前子帧结束所剩余的时间；若所述第三时间小于或等于所述第二时间，则判断所述辅载波处于所述接收侧设备需要检测状态；其中，N为整数，且大于0。
  17. 一种接收侧设备，其特征在于，包括：
    接收器，用于接收发送侧设备通过主载波发送的子帧；
    处理器，用于若所述接收器接收的所述子帧中携带有指示信号，则根据所述指示信号，检测所述辅载波上是否有所述发送侧设备发送的信号。
  18. 根据权利要求17所述的接收侧设备，其特征在于，所述处理器，还用于若所述接收器接收的所述子帧中未携带有指示信号，则不检测所述辅载波上是否有所述发送侧设备发送的信号。
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