WO2017049720A1 - 信道检测方法和信道检测装置 - Google Patents

信道检测方法和信道检测装置 Download PDF

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WO2017049720A1
WO2017049720A1 PCT/CN2015/093485 CN2015093485W WO2017049720A1 WO 2017049720 A1 WO2017049720 A1 WO 2017049720A1 CN 2015093485 W CN2015093485 W CN 2015093485W WO 2017049720 A1 WO2017049720 A1 WO 2017049720A1
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channel
ecca
data
transmitted
detection process
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French (fr)
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李明菊
朱亚军
张云飞
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • 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

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  • the present invention relates to the field of communications technologies, and in particular, to a channel detecting method and a channel detecting apparatus.
  • LTE Long Term Evolution
  • LTE Long Term Evolution
  • Wi-Fi Long Term Evolution
  • LBT Long Term Evolution
  • the LTE system needs an LBT mechanism. In this way, if the LTE detects that the channel is busy on the unlicensed spectrum, the LTE cannot occupy the frequency band, and if the channel is detected to be idle, it can be occupied.
  • an LBT mechanism based on LBE is proposed in the related art, as shown in FIG. 1.
  • the LBT-based LBT mechanism is cycle-free, and CCA is triggered as long as the service arrives. Detection, if the CCA detection is idle, immediately send signaling or data; if the channel is detected to be busy, take a random number N, N ranges from 1 to q, where q is the length of the contention window, and its value The range is 4 to 32.
  • the ECCA (Extended CCA) mechanism is adopted, that is, the random value N, N ranges from 1 to q. If the value is 8, it means that in the next consecutive CCA detection time, each The channel is detected at the CCA detection time. If the channel is detected to be idle, N-1, if the channel is detected to be busy, N is unchanged, and when N is 0, signaling or data is transmitted.
  • LBE adopts different ICCA (initial CCA) and ECCA values, where the first CCA test is called ICCA, and the time granularity is relatively large, such as 34us; when the channel busy is detected or the channel occupancy time is cut off, the time granularity of the ECCA is relatively small, such as 9us. .
  • ICCA initial CCA
  • each packet arrives at a certain size, and generally requires multiple maximum channel occupation times to be transmitted. If the channel is busy, the value of the contention window q may be large, and the time required for the ECCA process will be long. Then, after the end of one channel occupation time, the transmission point may not perform the ECCA process, but perform an initial ICCA channel detection before the data transmission, which will easily preempt the channel than the ECCA process, but this method affects the transmission point. Fairness in preempting unlicensed spectrum.
  • the present invention is based on at least one of the above technical problems, and proposes a new channel detection scheme, which can clarify the conditions for the sender to perform the ECCA process and the ICCA process, and effectively ensure the fairness of the sender when preempting the unlicensed spectrum.
  • a channel detection method including: determining, by a sender, whether a channel occupation time ends in a process of occupying a channel to transmit data; and determining that any channel occupation time ends, Turn on the ECCA channel detection process.
  • the end of the channel occupation time includes the following two situations: one is that the duration of occupying the channel reaches the maximum channel occupation time; and the other is that all data in the buffer is completely transmitted.
  • the method further includes: determining, at the end of the ECCA channel detection process, whether there is data to be transmitted; if it is determined that the data to be transmitted does not exist, entering an idle state, and starting ICCA when the data to be transmitted arrives a channel detecting process; determining whether to transmit the data to be transmitted according to a detection result of the ICCA channel detecting process.
  • the method further includes: if the data to be transmitted is already present when the ECCA channel detection process is started, or the data to be transmitted is in the After the end of the ECCA channel detection process, the data to be transmitted is determined according to the detection result of the ECCA channel detection process after the end of the ECCA channel detection process.
  • the method further includes: if the data to be transmitted arrives before the end of the ECCA channel detection process, at the end of the ECCA channel detection process Or, when the data to be transmitted arrives, restarting the ECCA channel detection process, and determining whether to send the data to be transmitted according to the detection result of the restarted ECCA channel detection process.
  • the method further includes:
  • Defer period process is performed after any one channel occupancy time ends, and before the ECCA channel detection process is turned on;
  • the defer period process is performed after the ECCA detection granularity.
  • a channel detecting apparatus including: a first determining unit, configured to determine, by a sender, whether a channel occupation time ends in a process of occupying a channel to transmit data; and a processing unit, configured to The first determining unit determines that the ECCA channel detecting process is started when any of the channel occupation time ends.
  • the end of the channel occupation time includes the following two situations: one is that the duration of occupying the channel reaches the maximum channel occupation time; and the other is that all data in the buffer is completely transmitted.
  • the method further includes: a second determining unit, configured to determine, at the end of the ECCA channel detection process, whether there is data to be transmitted; the processing unit is further configured to: The second determining unit determines that the data to be transmitted does not exist, controls the sender to enter an idle state, and starts an ICCA channel detecting process when the data to be transmitted arrives; the channel detecting apparatus further includes: And a sending unit, configured to determine, according to the detection result of the ICCA channel detecting process, whether to send the data to be transmitted.
  • the method further includes: a second sending unit, if the data to be transmitted already exists when the ECCA channel detecting process is started, or the data to be transmitted is in the ECCA channel detecting process Arriving before the end, after the end of the ECCA channel detection process, determining whether to transmit the data to be transmitted according to the detection result of the ECCA channel detection process.
  • the processing unit is further configured to: when the data to be transmitted arrives before the end of the ECCA channel detection process, at the end of the ECCA channel detection process or in the waiting When the transmitted data arrives, the ECCA channel detection process is restarted; the channel detecting apparatus further includes: a third sending unit, configured to determine whether to send the to-be-transmitted according to the detection result of the restarted ECCA channel detecting process The data.
  • the processing unit is further configured to:
  • Defer period process is performed after any one channel occupancy time ends, and before the ECCA channel detection process is turned on;
  • the defer period process is performed after the ECCA detection granularity.
  • the conditions for the sender to perform the ECCA process and the ICCA process can be clarified, and the fairness of the sender when preempting the unlicensed spectrum is effectively ensured.
  • FIG. 1 is a schematic diagram showing a frame structure of an LBT-based LBT mechanism
  • FIG. 2 shows a schematic diagram of a frame structure of an LBE mechanism including a defer period process
  • FIG. 3 shows a schematic flow chart of a channel detecting method according to an embodiment of the present invention
  • FIG. 4 shows a schematic block diagram of a channel detecting apparatus according to an embodiment of the present invention
  • Figure 5 shows a schematic block diagram of a base station in accordance with an embodiment of the present invention
  • Figure 6 shows a schematic block diagram of a terminal in accordance with an embodiment of the present invention.
  • FIG. 3 shows a schematic flow chart of a channel detecting method according to an embodiment of the present invention.
  • a channel detecting method includes:
  • Step 302 The sender determines whether the channel occupation time ends in the process of occupying the channel to transmit data.
  • Step 304 When it is determined that any of the channel occupation time ends, the ECCA channel detection process is started.
  • the end of the channel occupation time includes the following two situations: one is that the duration of occupying the channel reaches the maximum channel occupation time; and the other is that all data in the buffer is completely transmitted.
  • the method further includes: determining, by the end of the ECCA channel detection process, whether there is data to be transmitted; if it is determined that the data to be transmitted does not exist And entering an idle state, and when the data to be transmitted arrives, starting an ICCA channel detection process; determining whether to send the data to be transmitted according to the detection result of the ICCA channel detection process.
  • the technical solution clarifies the conditions for the sender to perform the ICCA process. Specifically, when the ECCA channel detection process ends, if the data to be transmitted still does not arrive, the sender can enter the idle state. State, when there is data to be transmitted, the ICCA channel detection process is performed.
  • the step of determining whether to send data to be transmitted according to the detection result of the ICCA channel detection process specifically includes: if the ICCA channel detection process detects that the channel is idle, transmitting data to be transmitted; if the ICCA channel detection process detects that the channel is busy, The data to be transmitted is not sent.
  • the method further includes: if the data to be transmitted is already present when the ECCA channel detection process is started, or the data to be transmitted is in the After the end of the ECCA channel detection process, the data to be transmitted is determined according to the detection result of the ECCA channel detection process after the end of the ECCA channel detection process.
  • the step of determining whether to send the data to be transmitted according to the detection result of the ECCA channel detection process specifically includes: if the ECCA channel detection process detects that the channel is idle, transmitting the data to be transmitted; if the ECCA channel detection process detects that the channel is busy, The data to be transmitted is not sent.
  • the method further includes: if the data to be transmitted arrives before the end of the ECCA channel detection process, at the end of the ECCA channel detection process Or, when the data to be transmitted arrives, restarting the ECCA channel detection process, and determining whether to send the data to be transmitted according to the detection result of the restarted ECCA channel detection process.
  • the step of determining whether to send the data to be transmitted according to the detection result of the restarted ECCA channel detection process specifically includes: if the restarted ECCA channel detection process detects that the channel is idle, transmitting the data to be transmitted; if the ECCA is restarted When the channel detection process detects that the channel is busy, the data to be transmitted is not transmitted.
  • the method further includes:
  • Defer period process is performed after any one channel occupancy time ends, and before the ECCA channel detection process is turned on;
  • the defer period process is performed after the ECCA detection granularity.
  • FIG. 4 shows a schematic block diagram of a channel detecting apparatus according to an embodiment of the present invention.
  • a channel detecting apparatus 400 includes: The determining unit 402 and the processing unit 404.
  • the first determining unit 402 is configured to determine, by the sender, whether the channel occupation time is ended in the process of occupying the channel to transmit data, and the processing unit 404 is configured to: when the first determining unit 402 determines that the channel occupancy time ends , the ECCA channel detection process is turned on.
  • the end of the channel occupation time includes the following two situations: one is that the duration of occupying the channel reaches the maximum channel occupation time; and the other is that all data in the buffer is completely transmitted.
  • the method further includes: a second determining unit 406, configured to determine, at the end of the ECCA channel detecting process, whether there is data to be transmitted; the processing unit 404 is further configured to: When the second determining unit 406 determines that the data to be transmitted does not exist, the sender is controlled to enter an idle state, and when the data to be transmitted arrives, an ICCA channel detecting process is initiated; the channel detecting device 400 The method further includes: a first sending unit 408, configured to determine, according to the detection result of the ICCA channel detecting process, whether to send the data to be transmitted.
  • the technical solution clarifies the conditions for the sender to perform the ICCA process. Specifically, when the ECCA channel detection process ends, if the data to be transmitted still does not arrive, the sender can enter the idle state, and when there is data to be transmitted, the ICCA is executed. Channel detection process.
  • the step of determining whether to send data to be transmitted according to the detection result of the ICCA channel detection process specifically includes: if the ICCA channel detection process detects that the channel is idle, transmitting data to be transmitted; if the ICCA channel detection process detects that the channel is busy, The data to be transmitted is not sent.
  • the method further includes: a second sending unit 410, if the data to be transmitted already exists when the ECCA channel detecting process is started, or the data to be transmitted is detected in the ECCA channel Arriving before the end of the process, after the end of the ECCA channel detection process, whether to transmit the data to be transmitted is determined according to the detection result of the ECCA channel detection process.
  • determining whether to send the number to be transmitted according to the detection result of the ECCA channel detection process includes: if the ECCA channel detection process detects that the channel is idle, transmitting the data to be transmitted; if the ECCA channel detection process detects that the channel is busy, the data to be transmitted is not sent.
  • the processing unit 404 is further configured to: when the data to be transmitted arrives before the end of the ECCA channel detection process, at the end of the ECCA channel detection process or in the When the data to be transmitted arrives, the ECCA channel detection process is restarted; the channel detecting apparatus further includes: a third sending unit 412, configured to determine, according to the detection result of the restarted ECCA channel detecting process, whether to send the The data to be transmitted.
  • the step of determining whether to send the data to be transmitted according to the detection result of the restarted ECCA channel detection process specifically includes: if the restarted ECCA channel detection process detects that the channel is idle, transmitting the data to be transmitted; if the ECCA is restarted When the channel detection process detects that the channel is busy, the data to be transmitted is not transmitted.
  • processing unit 404 is further configured to:
  • Defer period process is performed after any one channel occupancy time ends, and before the ECCA channel detection process is turned on;
  • the defer period process is performed after the ECCA detection granularity.
  • Figure 5 shows a schematic block diagram of a base station in accordance with an embodiment of the present invention.
  • a base station 500 includes: a channel detecting apparatus 400 as shown in FIG.
  • Figure 6 shows a schematic block diagram of a terminal in accordance with an embodiment of the present invention.
  • a terminal 600 includes: a channel detecting apparatus 400 as shown in FIG.
  • the present invention mainly provides conditions for triggering an ECCA channel process and an ICCA channel detection trigger to ensure fairness of multiple transmission points when preempting an unlicensed spectrum. details as follows:
  • the ECCA channel detection process is turned on regardless of whether there is data in the buffer of the transmission point.
  • the sending point can enter the idle state. In the following time, if the data packet arrives, ICCA channel detection can be used.
  • the transmission point may not perform the ECCA process after the end of the primary channel occupation time, but may perform an initial process before the data is transmitted.
  • ICCA channel detection which will easily preempt the channel than the ECCA process, affecting the fairness of the transmission point when preempting the unlicensed spectrum. Therefore, the present invention proposes a new channel detection scheme, which can clarify the conditions for the sender to perform the ECCA process and the ICCA process, and effectively ensure the fairness of the sender when preempting the unlicensed spectrum.

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Abstract

本发明提供了一种信道检测方法和信道检测装置，其中，所述信道检测方法，包括：发送方在占用信道传输数据的过程中，判断信道占用时间是否结束；在判定任一次信道占用时间结束时，开启ECCA信道检测过程。通过本发明的技术方案，可以明确发送方执行ECCA过程和ICCA过程的条件，有效保证了发送方在抢占非授权频谱时的公平性。

Description

信道检测方法和信道检测装置 技术领域
本发明涉及通信技术领域，具体而言，涉及一种信道检测方法和一种信道检测装置。
背景技术
目前，3GPP提出了LAA(LTE Assisted Access，LTE辅助接入)的概念，用于借助LTE(Long Term Evolution，长期演进)授权频谱的帮助来使用未授权频谱。而LTE网络在使用非授权频段时，最主要的关键点之一是确保LAA系统能够在公平友好的基础上和现有的接入技术(比如Wi-Fi)共存。而传统的LTE系统中没有LBT(Listen Before Talk，先听后说)的机制来避免碰撞，为了与Wi-Fi更好的共存，LTE系统需要一种LBT机制。这样，LTE在非授权频谱上如果检测到信道忙，则不能占用该频段，如果检测到信道闲，才能占用。
基于上述问题，相关技术中提出了一种基于LBE(Load based equipment，基于负载的设备)的LBT机制，如图1所示：基于LBE的LBT机制是无周期的，只要业务到达，则触发CCA检测，如果CCA检测空闲，则马上发送信令或数据；若检测到信道忙，则取一个随机数N，N的取值范围为1到q，其中，q是竞争窗口的长度，其取值范围是4到32。图1示出了q＝16的情况，此时，当检测到信道空闲时，信道最大占用时间为(13/32)×q＝6.5ms。在6.5ms之后，采取ECCA(即Extended CCA)机制，即也是随机取值N，N的范围为1到q，若取值为8，则表示在接下来的连续的CCA检测时间中，每个CCA检测时间都要检测信道，若检测到信道空闲，则N-1，若检测到信道忙，则N不变，当N为0时，发送信令或数据。
此外，为了更进一步与Wi-Fi保持公平性，LBE采取不同的ICCA (initial CCA)和ECCA的值，其中，第一次CCA检测称为ICCA，这个时间粒度比较大，比如34us；当检测到信道忙或者信道占用时间截止之后的ECCA的时间粒度比较小，比如9us。同时，如图2所示，在信道检测中，若检测到信道忙，则要增加一个defer period(延迟时间)，该defer period的值与initial CCA的值相当，也就是说必须再次长时间的检测到信道空闲，才能继续N-1。
由于每次数据包到达的时候都有一定的大小，而且一般来说都是需要多个最大信道占用时间才能传输完。若在信道较繁忙的情况下，竞争窗口q的值可能会较大，导致ECCA的过程所需要的时间将会很长。那么在一次信道占用时间结束之后，发送点可能会不进行ECCA过程，而是在数据发送之前进行一次初始的ICCA信道检测，这样将比ECCA过程容易抢占到信道，但是这种做法影响了发送点在抢占非授权频谱时的公平性。
因此，如何能够明确发送点执行ECCA过程和ICCA过程的条件，以保证发送点在抢占非授权频谱时的公平性成为亟待解决的技术问题。
发明内容
本发明正是基于上述技术问题至少之一，提出了一种新的信道检测方案，可以明确发送方执行ECCA过程和ICCA过程的条件，有效保证了发送方在抢占非授权频谱时的公平性。
有鉴于此，根据本发明的第一方面，提出了一种信道检测方法，包括：发送方在占用信道传输数据的过程中，判断信道占用时间是否结束；在判定任一次信道占用时间结束时，开启ECCA信道检测过程。
在该技术方案中，通过在任一次信道占用时间结束时开启ECCA信道检测过程，可以避免发送方在信道占用时间结束后进行ICCA信道检测过程而比进行ECCA信道检测过程的其它发送点更容易抢占到信道的问题，有效确保了不同的发送方在抢占非授权频谱发送数据时的公平性。其中，信道占用时间结束包括以下两种情况：一种是占用信道的时长达到了最大信道占用时间；另一种是缓存区(buffer)内的数据全部传输完成。
在上述技术方案中，优选地，在开启所述ECCA信道检测过程之后， 还包括：在所述ECCA信道检测过程结束时，判断是否存在待传输的数据；若判定不存在所述待传输的数据，则进入空闲状态，并在所述待传输的数据到达时，启动ICCA信道检测过程；根据所述ICCA信道检测过程的检测结果确定是否发送所述待传输的数据。
在上述任一技术方案中，优选地，在开启所述ECCA信道检测过程之后，还包括：若待传输的数据在所述ECCA信道检测过程开启时已经存在，或所述待传输的数据在所述ECCA信道检测过程结束之前到达，则在所述ECCA信道检测过程结束后，根据所述ECCA信道检测过程的检测结果确定是否发送所述待传输的数据。
在上述任一技术方案中，优选地，在开启所述ECCA信道检测过程之后，还包括：若待传输的数据在所述ECCA信道检测过程结束之前到达，则在所述ECCA信道检测过程结束时或在所述待传输的数据到达时，重新启动所述ECCA信道检测过程，并根据重新启动的所述ECCA信道检测过程的检测结果确定是否发送所述待传输的数据。
在上述任一技术方案中，优选地，还包括：
在任一次信道占用时间结束后，且在开启所述ECCA信道检测过程之前，执行defer period过程；以及
在所述ECCA信道检测过程中，若任一ECCA检测粒度检测到信道忙，则在所述任一ECCA检测粒度后执行defer period过程。
根据本发明的第二方面，还提出了一种信道检测装置，包括：第一判断单元，用于发送方在占用信道传输数据的过程中，判断信道占用时间是否结束；处理单元，用于在所述第一判断单元判定任一次信道占用时间结束时，开启ECCA信道检测过程。
在该技术方案中，通过在任一次信道占用时间结束时开启ECCA信道检测过程，可以避免发送方在信道占用时间结束后进行ICCA信道检测过程而比进行ECCA信道检测过程的其它发送点更容易抢占到信道的问题，有效确保了不同的发送方在抢占非授权频谱发送数据时的公平性。其中，信道占用时间结束包括以下两种情况：一种是占用信道的时长达到了最大信道占用时间；另一种是缓存区(buffer)内的数据全部传输完成。
在上述任一技术方案中，优选地，还包括：第二判断单元，用于在所述ECCA信道检测过程结束时，判断是否存在待传输的数据；所述处理单元还用于，在所述第二判断单元判定不存在所述待传输的数据时，控制所述发送方进入空闲状态，并在所述待传输的数据到达时，启动ICCA信道检测过程；所述信道检测装置还包括：第一发送单元，用于根据所述ICCA信道检测过程的检测结果确定是否发送所述待传输的数据。
在上述任一技术方案中，优选地，还包括：第二发送单元，若待传输的数据在所述ECCA信道检测过程开启时已经存在，或所述待传输的数据在所述ECCA信道检测过程结束之前到达，则在所述ECCA信道检测过程结束后，根据所述ECCA信道检测过程的检测结果确定是否发送所述待传输的数据。
在上述任一技术方案中，优选地，所述处理单元还用于，若待传输的数据在所述ECCA信道检测过程结束之前到达，则在所述ECCA信道检测过程结束时或在所述待传输的数据到达时，重新启动所述ECCA信道检测过程；所述信道检测装置还包括：第三发送单元，用于根据重新启动的所述ECCA信道检测过程的检测结果确定是否发送所述待传输的数据。
在上述任一技术方案中，优选地，所述处理单元还用于：
在任一次信道占用时间结束后，且在开启所述ECCA信道检测过程之前，执行defer period过程；以及
在所述ECCA信道检测过程中，若任一ECCA检测粒度检测到信道忙，则在所述任一ECCA检测粒度后执行defer period过程。
通过以上技术方案，可以明确发送方执行ECCA过程和ICCA过程的条件，有效保证了发送方在抢占非授权频谱时的公平性。
附图说明
图1示出了基于LBE的LBT机制的帧结构示意图；
图2示出了包含有defer period过程的LBE机制的帧结构示意图；
图3示出了根据本发明的实施例的信道检测方法的示意流程图；
图4示出了根据本发明的实施例的信道检测装置的示意框图；
图5示出了根据本发明的实施例的基站的示意框图；
图6示出了根据本发明的实施例的终端的示意框图。
具体实施方式
为了能够更清楚地理解本发明的上述目的、特征和优点，下面结合附图和具体实施方式对本发明进行进一步的详细描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本发明，但是，本发明还可以采用其他不同于在此描述的其他方式来实施，因此，本发明的保护范围并不受下面公开的具体实施例的限制。
图3示出了根据本发明的实施例的信道检测方法的示意流程图。
如图3所示，根据本发明的实施例的信道检测方法，包括：
步骤302，发送方在占用信道传输数据的过程中，判断信道占用时间是否结束；
步骤304，在判定任一次信道占用时间结束时，开启ECCA信道检测过程。
在该技术方案中，通过在任一次信道占用时间结束时开启ECCA信道检测过程，可以避免发送方在信道占用时间结束后进行ICCA信道检测过程而比进行ECCA信道检测过程的其它发送点更容易抢占到信道的问题，有效确保了不同的发送方在抢占非授权频谱发送数据时的公平性。其中，信道占用时间结束包括以下两种情况：一种是占用信道的时长达到了最大信道占用时间；另一种是缓存区(buffer)内的数据全部传输完成。
在上述技术方案中，优选地，在开启所述ECCA信道检测过程之后，还包括：在所述ECCA信道检测过程结束时，判断是否存在待传输的数据；若判定不存在所述待传输的数据，则进入空闲状态，并在所述待传输的数据到达时，启动ICCA信道检测过程；根据所述ICCA信道检测过程的检测结果确定是否发送所述待传输的数据。
该技术方案明确了发送方执行ICCA过程的条件，具体地，当ECCA信道检测过程结束时，若待传输的数据仍未到达，则发送方可以进入空闲 状态，当有待传输的数据时，执行ICCA信道检测过程。其中，根据ICCA信道检测过程的检测结果确定是否发送待传输的数据的步骤具体包括：若ICCA信道检测过程检测到信道空闲，则发送待传输的数据；若ICCA信道检测过程检测到信道忙，则不发送待传输的数据。
在上述任一技术方案中，优选地，在开启所述ECCA信道检测过程之后，还包括：若待传输的数据在所述ECCA信道检测过程开启时已经存在，或所述待传输的数据在所述ECCA信道检测过程结束之前到达，则在所述ECCA信道检测过程结束后，根据所述ECCA信道检测过程的检测结果确定是否发送所述待传输的数据。
其中，根据ECCA信道检测过程的检测结果确定是否发送待传输的数据的步骤具体包括：若ECCA信道检测过程检测到信道空闲，则发送待传输的数据；若ECCA信道检测过程检测到信道忙，则不发送待传输的数据。
在上述任一技术方案中，优选地，在开启所述ECCA信道检测过程之后，还包括：若待传输的数据在所述ECCA信道检测过程结束之前到达，则在所述ECCA信道检测过程结束时或在所述待传输的数据到达时，重新启动所述ECCA信道检测过程，并根据重新启动的所述ECCA信道检测过程的检测结果确定是否发送所述待传输的数据。
其中，根据重新启动的ECCA信道检测过程的检测结果确定是否发送待传输的数据的步骤具体包括：若重新启动的ECCA信道检测过程检测到信道空闲，则发送待传输的数据；若重新启动的ECCA信道检测过程检测到信道忙，则不发送待传输的数据。
在上述任一技术方案中，优选地，还包括：
在任一次信道占用时间结束后，且在开启所述ECCA信道检测过程之前，执行defer period过程；以及
在所述ECCA信道检测过程中，若任一ECCA检测粒度检测到信道忙，则在所述任一ECCA检测粒度后执行defer period过程。
图4示出了根据本发明的实施例的信道检测装置的示意框图。
如图4所示，根据本发明的实施例的信道检测装置400，包括：第一 判断单元402和处理单元404。
其中，第一判断单元402，用于发送方在占用信道传输数据的过程中，判断信道占用时间是否结束；处理单元404，用于在所述第一判断单元402判定任一次信道占用时间结束时，开启ECCA信道检测过程。
在该技术方案中，通过在任一次信道占用时间结束时开启ECCA信道检测过程，可以避免发送方在信道占用时间结束后进行ICCA信道检测过程而比进行ECCA信道检测过程的其它发送点更容易抢占到信道的问题，有效确保了不同的发送方在抢占非授权频谱发送数据时的公平性。其中，信道占用时间结束包括以下两种情况：一种是占用信道的时长达到了最大信道占用时间；另一种是缓存区(buffer)内的数据全部传输完成。
在上述任一技术方案中，优选地，还包括：第二判断单元406，用于在所述ECCA信道检测过程结束时，判断是否存在待传输的数据；所述处理单元404还用于，在所述第二判断单元406判定不存在所述待传输的数据时，控制所述发送方进入空闲状态，并在所述待传输的数据到达时，启动ICCA信道检测过程；所述信道检测装置400还包括：第一发送单元408，用于根据所述ICCA信道检测过程的检测结果确定是否发送所述待传输的数据。
该技术方案明确了发送方执行ICCA过程的条件，具体地，当ECCA信道检测过程结束时，若待传输的数据仍未到达，则发送方可以进入空闲状态，当有待传输的数据时，执行ICCA信道检测过程。其中，根据ICCA信道检测过程的检测结果确定是否发送待传输的数据的步骤具体包括：若ICCA信道检测过程检测到信道空闲，则发送待传输的数据；若ICCA信道检测过程检测到信道忙，则不发送待传输的数据。
在上述任一技术方案中，优选地，还包括：第二发送单元410，若待传输的数据在所述ECCA信道检测过程开启时已经存在，或所述待传输的数据在所述ECCA信道检测过程结束之前到达，则在所述ECCA信道检测过程结束后，根据所述ECCA信道检测过程的检测结果确定是否发送所述待传输的数据。
其中，根据ECCA信道检测过程的检测结果确定是否发送待传输的数 据的步骤具体包括：若ECCA信道检测过程检测到信道空闲，则发送待传输的数据；若ECCA信道检测过程检测到信道忙，则不发送待传输的数据。
在上述任一技术方案中，优选地，所述处理单元404还用于，若待传输的数据在所述ECCA信道检测过程结束之前到达，则在所述ECCA信道检测过程结束时或在所述待传输的数据到达时，重新启动所述ECCA信道检测过程；所述信道检测装置还包括：第三发送单元412，用于根据重新启动的所述ECCA信道检测过程的检测结果确定是否发送所述待传输的数据。
其中，根据重新启动的ECCA信道检测过程的检测结果确定是否发送待传输的数据的步骤具体包括：若重新启动的ECCA信道检测过程检测到信道空闲，则发送待传输的数据；若重新启动的ECCA信道检测过程检测到信道忙，则不发送待传输的数据。
在上述任一技术方案中，优选地，所述处理单元404还用于：
在任一次信道占用时间结束后，且在开启所述ECCA信道检测过程之前，执行defer period过程；以及
在所述ECCA信道检测过程中，若任一ECCA检测粒度检测到信道忙，则在所述任一ECCA检测粒度后执行defer period过程。
图5示出了根据本发明的实施例的基站的示意框图。
如图5所示，根据本发明的实施例的基站500，包括：如图4中所示的信道检测装置400。
图6示出了根据本发明的实施例的终端的示意框图。
如图6所示，根据本发明的实施例的终端600，包括：如图4中所示的信道检测装置400。
综上所述，本发明主要是给出了触发ECCA信道过程以及ICCA信道检测触发的条件，以保证多个发送点在抢占非授权频谱时的公平性。具体如下：
一、在任何一次信道占用时间结束之后，不管发送点的buffer里是否还有数据，都要开启ECCA信道检测过程。
1、如果在该ECCA检测过程结束时，buffer里还没有数据，那么该发送点可以进入idle(空闲)状态。在接下来的时间里，若数据包到来，则可以使用ICCA信道检测。
2、如果在该ECCA检测过程开始时，buffer里就有数据，则在ECCA过程结束后，若ECCA检测结果为信道空闲，则开始新一次的信道占用时间，发送buffer里的数据。
3、如果在该ECCA检测过程期间有数据到达，则可以有如下两种处理方法：
1)在该次ECCA过程结束后，若ECCA检测结果为信道空闲，则开始新一次的信道占用时间，发送buffer里的数据。
2)在该次ECCA过程结束后或者数据到达时，重新启动一次新的ECCA检测过程，在新的ECCA检测过程结束后，若新的ECCA检测结果为信道空闲，则开始新一次的信道占用时间，发送buffer里的数据。
二、在信道占用时间结束之后，且在ECCA过程开启之前，需要配置一个defer period的过程。在ECCA过程中，若任一ECCA检测粒度检测到信道忙，则也需要配置一个defer period的过程。
以上结合附图详细说明了本发明的技术方案，考虑到在信道较繁忙的情况下，发送点在一次信道占用时间结束之后，可能会不进行ECCA过程，而是在数据发送之前进行一次初始的ICCA信道检测，这样将比ECCA过程容易抢占到信道，影响了发送点在抢占非授权频谱时的公平性。因此，本发明提出了一种新的信道检测方案，可以明确发送方执行ECCA过程和ICCA过程的条件，有效保证了发送方在抢占非授权频谱时的公平性。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种信道检测方法，其特征在于，包括：
    发送方在占用信道传输数据的过程中，判断信道占用时间是否结束；
    在判定任一次信道占用时间结束时，开启ECCA信道检测过程。
  2. 根据权利要求1所述的信道检测方法，其特征在于，在开启所述ECCA信道检测过程之后，还包括：
    在所述ECCA信道检测过程结束时，判断是否存在待传输的数据；
    若判定不存在所述待传输的数据，则进入空闲状态，并在所述待传输的数据到达时，启动ICCA信道检测过程；
    根据所述ICCA信道检测过程的检测结果确定是否发送所述待传输的数据。
  3. 根据权利要求1所述的信道检测方法，其特征在于，在开启所述ECCA信道检测过程之后，还包括：
    若待传输的数据在所述ECCA信道检测过程开启时已经存在，或所述待传输的数据在所述ECCA信道检测过程结束之前到达，则在所述ECCA信道检测过程结束后，根据所述ECCA信道检测过程的检测结果确定是否发送所述待传输的数据。
  4. 根据权利要求1所述的信道检测方法，其特征在于，在开启所述ECCA信道检测过程之后，还包括：
    若待传输的数据在所述ECCA信道检测过程结束之前到达，则在所述ECCA信道检测过程结束时或在所述待传输的数据到达时，重新启动所述ECCA信道检测过程，并根据重新启动的所述ECCA信道检测过程的检测结果确定是否发送所述待传输的数据。
  5. 根据权利要求1至4中任一项所述的信道检测方法，其特征在于，还包括：
    在任一次信道占用时间结束后，且在开启所述ECCA信道检测过程之前，执行defer period过程；以及
    在所述ECCA信道检测过程中，若任一ECCA检测粒度检测到信道 忙，则在所述任一ECCA检测粒度后执行defer period过程。
  6. 一种信道检测装置，其特征在于，包括：
    第一判断单元，用于发送方在占用信道传输数据的过程中，判断信道占用时间是否结束；
    处理单元，用于在所述第一判断单元判定任一次信道占用时间结束时，开启ECCA信道检测过程。
  7. 根据权利要求6所述的信道检测装置，其特征在于，还包括：第二判断单元，用于在所述ECCA信道检测过程结束时，判断是否存在待传输的数据；
    所述处理单元还用于，在所述第二判断单元判定不存在所述待传输的数据时，控制所述发送方进入空闲状态，并在所述待传输的数据到达时，启动ICCA信道检测过程；
    所述信道检测装置还包括：第一发送单元，用于根据所述ICCA信道检测过程的检测结果确定是否发送所述待传输的数据。
  8. 根据权利要求6所述的信道检测装置，其特征在于，还包括：
    第二发送单元，若待传输的数据在所述ECCA信道检测过程开启时已经存在，或所述待传输的数据在所述ECCA信道检测过程结束之前到达，则在所述ECCA信道检测过程结束后，根据所述ECCA信道检测过程的检测结果确定是否发送所述待传输的数据。
  9. 根据权利要求6所述的信道检测装置，其特征在于，所述处理单元还用于，若待传输的数据在所述ECCA信道检测过程结束之前到达，则在所述ECCA信道检测过程结束时或在所述待传输的数据到达时，重新启动所述ECCA信道检测过程；
    所述信道检测装置还包括：第三发送单元，用于根据重新启动的所述ECCA信道检测过程的检测结果确定是否发送所述待传输的数据。
  10. 根据权利要求6至9中任一项所述的信道检测装置，其特征在于，所述处理单元还用于：
    在任一次信道占用时间结束后，且在开启所述ECCA信道检测过程之前，执行defer period过程；以及
    在所述ECCA信道检测过程中，若任一ECCA检测粒度检测到信道忙，则在所述任一ECCA检测粒度后执行defer period过程。
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