WO2017020384A1

WO2017020384A1 - Load-based lbt channel detection method and system, base station, and terminal

Info

Publication number: WO2017020384A1
Application number: PCT/CN2015/088489
Authority: WO
Inventors: 李明菊; 朱亚军; 张云飞
Original assignee: 宇龙计算机通信科技(深圳)有限公司
Priority date: 2015-07-31
Filing date: 2015-08-30
Publication date: 2017-02-09
Also published as: CN105634859B; CN105634859A

Abstract

The present invention provides a load-based LBT channel detection method, a load-based LBT channel detection system, a base station, and a terminal. The load-based LBT channel detection method comprises: when detecting that a channel is busy in an initial CCA channel detection time or in a current ECCA detection granularity of an ECCA channel detection time of load-based LBT channel detection, configuring M defer periods after the initial CCA channel detection time or the current ECCA detection granularity; and carrying out the load-based LBT channel detection in the M defer periods by using the defer periods as a granularity, M being an integer greater than or equal to 1. By means of the technical solution of the present invention, a defer period (defer period) can be accurately defined, so that different defer periods can be configured for different sending objects, and different channel occupation probabilities can be realized, thereby improving the channel detection efficiency.

Description

基于负载的LBT信道检测方法及***、基站和终端Load-based LBT channel detection method and system, base station and terminal

技术领域Technical field

本发明涉及通信技术领域，具体而言，涉及一种基于负载的LBT信道检测方法、一种基于负载的LBT信道检测***、一种基站和一种终端。The present invention relates to the field of communications technologies, and in particular, to a load-based LBT channel detection method, a load-based LBT channel detection system, a base station, and a terminal.

背景技术Background technique

随着通信业务量的急剧增加，3GPP(The 3^rd Generation Partnership Project，第三代移动通信伙伴组织)的授权频谱越来越不足以提供更高的网络容量。为了进一步提高频谱资源的利用率，3GPP正讨论如何在授权频谱的帮助下使用未授权频谱，如2.4GHz和5GHz频段。这些未授权频谱目前主要是Wi-Fi、蓝牙、雷达、医疗等***在使用。With the dramatic increase in communications ^{traffic, 3GPP (The 3 rd Generation Partnership} Project, the third generation mobile communications partner organization) of licensed spectrum increasingly insufficient to provide higher network capacity. To further increase the utilization of spectrum resources, 3GPP is discussing how to use unlicensed spectrum, such as the 2.4 GHz and 5 GHz bands, with the help of licensed spectrum. These unlicensed spectrum are currently mainly used in systems such as Wi-Fi, Bluetooth, radar, and medical.

通常情况下，为已授权频段设计的接入技术，如LTE(Long Term Evolution，长期演进)不适合在非授权频段上使用，因为LTE这类接入技术对频谱效率和用户体验优化的要求非常高。然而，载波聚合(Carrier Aggregation，CA)功能让将LTE部署于非授权频段变为可能。3GPP提出了LAA(LTE Assisted Access，LTE辅助接入)的概念，借助LTE授权频谱的帮助来使用未授权频谱。而未授权频谱可以有两种工作方式，一种是补充下行(SDL，Supplemental Downlink)，即只有下行传输子帧；另一种是TDD模式，既包含下行子帧、上行子帧。补充下行这种情况只能是借助载波聚合技术使用。而TDD模式除了可以借助载波聚合技术使用外，还可以借助DC(Dual Connectivity，双连通)使用，也可以独立使用。如图1所示。In general, access technologies designed for licensed frequency bands, such as LTE (Long Term Evolution), are not suitable for use in unlicensed bands, because access technologies such as LTE are very demanding for spectrum efficiency and user experience optimization. high. However, the Carrier Aggregation (CA) feature makes it possible to deploy LTE in unlicensed bands. 3GPP proposes the concept of LAA (LTE Assisted Access), which uses the help of LTE licensed spectrum to use unlicensed spectrum. The unlicensed spectrum can work in two modes. One is the downlink (SDL), that is, only the downlink transmission subframe, and the other is the TDD mode, which includes the downlink subframe and the uplink subframe. This situation can only be supplemented by the carrier aggregation technology. In addition to the carrier aggregation technology, the TDD mode can also be used by DC (Dual Connectivity) or independently. As shown in Figure 1.

相比于Wi-Fi***，工作在非授权频段的LTE***有能力提供更高的频谱效率和更大的覆盖效果，同时基于同一个核心网让数据流量在授权频段和非授权频段之间无缝切换。对用户来说，这意味着更好的宽带体验、更高的速率、更好的稳定性和移动便利。Compared with Wi-Fi systems, LTE systems operating in unlicensed bands have the ability to provide higher spectral efficiency and greater coverage, while relying on the same core network to allow data traffic between licensed and unlicensed bands. Sew switch. For the user, this means a better broadband experience, Higher speed, better stability and mobility.

现有的在非授权频谱上使用的接入技术，如Wi-Fi，具有较弱的抗干扰能力。为了避免干扰，Wi-Fi***设计了很多干扰避免规则，如CSMA/CD(Carrier Sense Multiple Access/Collision Detection，载波监听多路访问/冲突检测方法)，这种方法的基本原理是Wi-Fi的AP(Access Point，接入点)或者终端在发送信令或者数据之前，要先监听检测周围是否有其他AP或者其他终端在发送/接收信令或数据，若有，则继续监听，直到监听到没有为止；若没有，则生成一个随机数作为退避时间，在这个退避时间内，如果没检测到有信令或数据传输，那么在退避时间结束之后，AP或终端可以开始发送信令或数据。该过程如图2所示。Existing access technologies used on unlicensed spectrum, such as Wi-Fi, have weaker anti-jamming capabilities. In order to avoid interference, the Wi-Fi system has designed many interference avoidance rules, such as CSMA/CD (Carrier Sense Multiple Access/Collision Detection). The basic principle of this method is Wi-Fi. Before the AP (Access Point) or the terminal sends signaling or data, it must first monitor whether other APs or other terminals are transmitting/receiving signaling or data. If so, continue to listen until it is monitored. If not, a random number is generated as the backoff time. If no signaling or data transmission is detected during this backoff time, the AP or the terminal may start transmitting signaling or data after the end of the backoff time. The process is shown in Figure 2.

但是，LTE网络中由于有很好的正交性保证了干扰水平，所以基站与用户的上下行传输不用考虑周围是否有其他基站或其他用户在传输数据。如果LTE在非授权频段上使用时也不考虑周围是否有其他设备在使用非授权频段，那么将对Wi-Fi设备带来极大的干扰。因为LTE只要有业务就进行传输，没有任何监听规则，那么Wi-Fi设备在LTE有业务传输时就不能传输，只能等到LTE业务传输完成，才能检测到信道空闲状态以进行数据传输。However, since the LTE network has good orthogonality to ensure the interference level, the uplink and downlink transmissions between the base station and the user do not need to consider whether other base stations or other users are transmitting data. If LTE is used on an unlicensed band, it does not consider whether other devices are using unlicensed bands nearby, which will cause great interference to Wi-Fi devices. Because LTE transmits as long as there is traffic, there is no monitoring rule, then the Wi-Fi device cannot transmit when LTE has service transmission, and can only detect the channel idle state for data transmission after the LTE service transmission is completed.

所以LTE在使用非授权频段时，最主要的关键点之一是确保LAA(LTE assisted access，LTE辅助的接入技术)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***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。Therefore, one of the most important key points when LTE uses unlicensed frequency bands is to ensure that LAA (LTE assisted access) can be used on a fair and friendly basis and existing access technologies (such as Wi-Fi). )coexist. In the traditional LTE system, there is no LBT (Listen Before Talk) mechanism to avoid collisions. In order to coexist better with Wi-Fi, LTE requires 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.

基于上述问题，目前，提出了一种基于帧结构的(FBE，Frame based equipment)的LBT机制(如图3所示)，左斜线是CCA(Clear Channel Assessment，空闲信道评估)的信道检测时间，CCA检测时间周期性重复出现，若检测到信道空闲，则占用信道，在信道占用时间达到最大信道占用时间之后，有一个idle(空闲)时间，在idle时间，发送点不发送信号和数据，以便于其它发送点抢占信道。在idle时间之后，又出现CCA检测时间，若检测到信道忙，则不占用信道，直到下一周期的CCA检测时间出现时再次检测信道。当然，信道检测时间也属于idle时间，idle时长必须大于信道最大占用时间的5％。idle时间加上信道占用最大时间即周期。Based on the above problems, a LBT mechanism based on frame-based (FBE) (as shown in Figure 3) is proposed. The left slash is the channel detection time of CCA (Clear Channel Assessment). The CCA detection time is periodically repeated. If the channel is idle, the channel is occupied. After the channel occupancy time reaches the maximum channel occupation time, there is an idle time. At the idle time, the transmission point does not send signals and data. So that other sending points can preempt the channel. After the idle time, CCA check again The measurement time, if the channel is detected to be busy, does not occupy the channel until the CCA detection time of the next cycle occurs, and the channel is detected again. Of course, the channel detection time also belongs to the idle time, and the idle duration must be greater than 5% of the maximum channel occupation time. The idle time plus the maximum time occupied by the channel is the period.

目前，还提出了一种基于负载的(LBE，Load based equipment)的LBT机制，如图4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(即竞争窗口长度)，q的取值范围是4到32。图4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extended CCA(ECCA，延长的信道检测时间)机制，即也是随机取值N，N的范围为1到16，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。At present, an LBT mechanism based on load-based (LBE) is proposed, as shown in Figure 4. The LBT-based LBT mechanism is cycle-free. As long as the service arrives, the CCA detection is triggered. If the CCA detects 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 (ie, the length of the contention window), and q ranges from 4 to 32. Fig. 4 shows the case of q = 16, in which case, when the channel is detected to be idle, the channel maximum occupation time is (13/32) × q = 6.5 ms. After 6.5ms, the extended CCA (ECCA, extended channel detection time) mechanism is adopted, that is, the random value N, N ranges from 1 to 16. If the value is 8, it indicates the next consecutive CCA detection. In the time, the channel is detected every CCA detection time. If the channel is detected to be idle, then N-1, if the channel is detected to be busy, N is unchanged, and when N is 0, signaling or data is sent.

另外，为了更进一步与Wi-Fi保持公平性，LBE采取不同的initial CCA(初始信道检测时间)和extended CCA(ECCA，延长的信道检测时间)的值，比如第一次CCA检测，叫initial CCA，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。另外，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。In addition, in order to further maintain fairness with Wi-Fi, the LBE adopts different initial CCA (initial channel detection time) and extended CCA (ECCA, extended channel detection time) values, such as the first CCA detection, called initial CCA. This time granularity is relatively large, such as 34us; when the channel is busy or the channel occupancy time is cut off, the ECCA time granularity is relatively small, such as 9us. In addition, in the channel detection, if the channel is detected to be busy, a defer period is added, and the value of the defer period is equal to the value of the initial CCA, that is, the channel idle time must be detected again for a long time. Continue N-1.

而且，如果发送时产生了碰撞(比如收到较多的NACK反馈)，则下次进行LBT信道检测时的竞争窗口q值就需要增大。Moreover, if a collision occurs during transmission (such as receiving more NACK feedback), the value of the contention window q of the next LBT channel detection needs to be increased.

问题在于，目前LAA***中的延迟时间(defer period)的定义还不明确。The problem is that the definition of the defer period in the current LAA system is not clear.

因此，如何实现对延迟时间(defer period)的准确定义成为亟待解决的问题。 Therefore, how to achieve an accurate definition of the defer period becomes an urgent problem to be solved.

发明内容Summary of the invention

本发明正是基于上述问题，提出了一种新的技术方案，可以实现对延迟时间(defer period)的准确定义，从而可以针对不同的发送对象配置不同的延迟时间，实现不同的信道占用概率，以提高信道检测的效率。The present invention is based on the above problems, and proposes a new technical solution, which can accurately define the defer period, so that different delay times can be configured for different transmission objects, and different channel occupancy probabilities can be realized. To improve the efficiency of channel detection.

有鉴于此，本发明的第一方面，提出了一种基于负载的LBT信道检测方法，包括：当在所述基于负载的LBT信道检测的initial CCA信道检测时间或ECCA信道检测时间的当前ECCA检测粒度内检测到信道忙时，在所述initial CCA信道检测时间或所述当前ECCA检测粒度之后配置M个延迟时间；在所述M个延迟时间内以延迟时间为粒度继续进行所述基于负载的LBT信道检测，其中，M为大于或等于1的整数。In view of this, in a first aspect of the present invention, a load-based LBT channel detection method is provided, including: current ECCA detection when an initial CCA channel detection time or an ECCA channel detection time is detected on the load-based LBT channel. Configuring M delay times after the initial CCA channel detection time or the current ECCA detection granularity is detected within the granularity; and performing the load-based processing with the delay time as the granularity within the M delay times LBT channel detection, where M is an integer greater than or equal to one.

在该技术方案中，当进行基于LBE的LBT机制时，通过在基于负载的LBT信道检测的initial CCA信道检测时间或ECCA信道检测时间的当前ECCA检测粒度内检测到信道忙时，即在第一次CCA(initial CCA)检测或者ECCA检测的某一粒度中检测到信道忙时，则可以在该initial CCA信道检测时间或者当前ECCA检测粒度之后配置M个延迟时间，以供继续以延迟时间为粒度进行基于负载的LBT信道检测，其中，M为大于或等于1的整数，且M的具体取值根据具体情况而定，从而实现了对延迟时间(defer period)的准确定义。In this technical solution, when the LBE-based LBT mechanism is performed, the channel busy time is detected by the current ECCA detection granularity of the initial CCA channel detection time or the ECCA channel detection time detected by the load-based LBT channel, that is, at the first When channel busy is detected in a certain granularity of secondary CCA (initial CCA) detection or ECCA detection, M delay times may be configured after the initial CCA channel detection time or the current ECCA detection granularity for continuing to be granular in delay time. Load-based LBT channel detection is performed, where M is an integer greater than or equal to 1, and the specific value of M is determined according to a specific situation, thereby realizing an accurate definition of a defer period.

在上述技术方案中，优选地，所述M个延迟时间顺次相邻且每相邻的两个延迟时间之间不存在重叠的部分，以组成第一型延迟时间；或者所述M个延迟时间中的每相邻的两个延迟时间之间存在重叠的部分，以组成第二型延迟时间。In the above technical solution, preferably, the M delay times are sequentially adjacent and there is no overlapping portion between each adjacent two delay times to constitute a first type delay time; or the M delays There is an overlap between each adjacent two delay times in time to constitute a second type delay time.

在该技术方案中，实现了对延迟时间类型的定义，具体地，若M个延迟时间顺次相邻且每相邻的两个延迟时间之间不存在重叠的部分(即延迟时间为固定的)，则为第一型延迟时间，而当M个延迟时间中的每相邻的两个延迟时间之间存在重叠的部分(即延迟时间为滑动的)，则为第二型延迟时间，如此，细化了延迟时间的定义，从而使延迟时间的定义更加清晰、明了，且可以满足对延迟时间的对多样化需求。In this technical solution, the definition of the delay time type is implemented, specifically, if the M delay times are sequentially adjacent and there is no overlap between each adjacent two delay times (ie, the delay time is fixed) ), which is the first type delay time, and when there is an overlap between each adjacent two delay times of the M delay times (ie, the delay time is sliding), then the second type delay time, so The definition of delay time is refined, so that the definition of delay time is clearer and clearer, and can meet the diversified demand for delay time.

在上述技术方案中，优选地，所述第二型延迟时间的除所述重叠的部分外的非重叠的部分由预设数量的所述ECCA检测粒度组成，其中，所述预设数量大于或等于1个且小于所述每个延迟时间中的ECCA检测粒度的总数。In the above technical solution, preferably, the overlapping portion of the second type delay time The extra non-overlapping portions are composed of a preset number of the ECCA detection granularities, wherein the predetermined number is greater than or equal to one and less than the total number of ECCA detection granularities in each of the delay times.

在该技术方案中，当M个延迟时间中的每相邻的两个延迟时间之间存在重叠的部分时，配置第二型延迟时间的除重叠的部分外的非重叠的部分由预设数量的ECCA检测粒度组成，其中，预设数量大于或等于1个且小于每个延迟时间中的ECCA检测粒度的总数(如果每个延迟时间不是ECCA检测粒度的整数倍，则为小于每个延迟时间中的ECCA检测粒度的向上取整的个数)，即每相邻的两个延迟时间至少有一个ECCA检测粒度未重叠但至少存在重叠的部分，而该重叠的部分可以是ECCA检测粒度的整数倍也可以不是(如果每个延迟时间是ECCA检测粒度的整数倍，则重叠的部分也是ECCA检测粒度的整数倍；否则，不是)，根据具体情况配置，以实现更宽松的信道检测。In this technical solution, when there is an overlapping portion between each adjacent two delay times of the M delay times, the non-overlapping portion of the second type delay time except the overlapping portion is configured by a preset number ECCA detection granularity composition, wherein the preset number is greater than or equal to 1 and less than the total number of ECCA detection granularities in each delay time (if each delay time is not an integer multiple of the ECCA detection granularity, then less than each delay time) The ECCA detects the number of rounding up the granularity), that is, at least one ECCA detection granularity per adjacent two delay times does not overlap but at least overlaps, and the overlapping portion may be an integer of the ECCA detection granularity The multiple may also be (if each delay time is an integer multiple of the ECCA detection granularity, the overlapping portion is also an integer multiple of the ECCA detection granularity; otherwise, not), configured as appropriate to achieve more relaxed channel detection.

在上述技术方案中，优选地，所述M个延迟时间中的每个延迟时间均为ECCA检测粒度的大于或等于2的整数倍。In the above technical solution, preferably, each of the M delay times is an integer multiple of the ECCA detection granularity greater than or equal to 2.

在该技术方案中，M个延迟时间中的每个延迟时间至少包括大于或等于2的整数个的基于LBE的LBT机制的ECCA检测粒度，以再次长时间的检测信道是否空闲，并限定了延迟时间与ECCA检测粒度的关系，而且当每个延迟时间均为ECCA检测粒度的大于或等于2的整数倍时，第二型延迟时间的重叠的部分和非重叠的部分均可由整数个的ECCA检测粒度组成，从而实现了对延迟时间的进一步定义。In this technical solution, each of the M delay times includes at least an integer number of EBE detection granularities of the LBE-based LBT mechanism greater than or equal to 2 to detect whether the channel is idle for a long time and limit the delay. The relationship between the time and the ECCA detection granularity, and when each delay time is an integer multiple of the ECCA detection granularity greater than or equal to 2, the overlapping portion and the non-overlapping portion of the second type delay time can be detected by an integer number of ECCAs The granularity is made to achieve a further definition of the delay time.

在上述技术方案中，优选地，根据发送对象的信道占用优先级配置所述M个延迟时间的组成类型，其中，为所述信道占用优先级靠后的发送对象配置所述第一型延迟时间，以及为所述信道占用优先级靠前的发送对象配置所述第二型延迟时间。In the above technical solution, preferably, the component type of the M delay times is configured according to a channel occupation priority of the transmission target, wherein the first type delay time is configured for the transmission object with the channel occupation priority later And configuring the second type of delay time for the transmit object with the channel occupying priority.

在该技术方案中，通过根据发送对象的信道占用优先级(即不同的发送对象)配置M个延迟时间的组成类型，具体地，若发送对象占用信道的优先级靠后，则可配置第一型延迟时间，若发送对象占用信道的优先级靠前，则配置更容易检测到信道空闲的第二型延迟时间，比如，用于下行 PDCCH(Physical Downlink Control Channel物理下行控制信道)/EPDCCH(Enhanced Physical Downlink Control Channel增强物理下行控制信道)发送UL grant(上行授权)或发送上行的PUSCH(Physical Uplink Shared Channel物理上行共享信道)优先级高于发送下行PDSCH(Physical Downlink Shared Channel物理下行共享信道)，用于发送下行发现参考信号优先级高于发送下行PDSCH，被非授权频谱发送UL grant调度的PUSCH优先级高于被授权频谱发送UL grant调度的PUSCH，时延敏感的PDSCH(或PUSCH)优先级高于时延不敏感的PDSCH(或PUSCH)，针对以上多种比较对象组合，与后者相比，前者希望更容易抢占到信道，所以前者配置第二型延迟时间，而后者则应配置第一型延迟时间，以实现不同的信道占用概率，并提高信道检测的效率，进而提高信道占用概率。In this technical solution, the component types of the M delay times are configured according to the channel occupation priority (that is, different transmission objects) of the transmission target. Specifically, if the priority of the transmission object occupying the channel is later, the first configuration may be configured. Type delay time, if the priority of the channel occupied by the transmitting object is higher, the configuration is easier to detect the second type delay time of the channel idle, for example, for downlink The PDCCH (Physical Downlink Control Channel)/EPDCCH (Enhanced Physical Downlink Control Channel) transmits a UL grant (uplink grant) or transmits an uplink PUSCH (Physical Uplink Shared Channel) with a high priority. The downlink PDSCH (Physical Downlink Shared Channel) is used to transmit the downlink discovery reference signal with a higher priority than the downlink downlink PDSCH, and the PUSCH priority of the unlicensed spectrum transmission UL grant scheduling is higher than the authorized spectrum transmission UL grant. The scheduled PUSCH, the delay-sensitive PDSCH (or PUSCH) priority is higher than the delay-insensitive PDSCH (or PUSCH), and the former is more likely to preempt the channel than the latter. Therefore, the former configures the second type delay time, and the latter should configure the first type delay time to achieve different channel occupancy probabilities, and improve channel detection efficiency, thereby increasing channel occupancy probability.

在上述技术方案中，优选地，当在所述M个延迟时间中的任一延迟时间内持续检测到信道空闲时，则停止在所述任一延迟时间之后进行所述以延迟时间为粒度的信道检测，并按所述ECCA检测粒度继续进行信道检测。In the above technical solution, preferably, when the channel idle is continuously detected during any one of the M delay times, stopping the granularity after the delay time is performed. Channel detection, and channel detection continues according to the ECCA detection granularity.

在该技术方案中，若在M个延迟时间中的任一延迟时间内持续检测到信道空闲，则可停止在任一延迟时间之后进行以延迟时间为粒度的信道检测，而恢复按ECCA检测粒度继续进行信道检测，通过上述技术方案，确定了以延迟时间为粒度进行信道检测何时停止的定义，同时提供了确定M的具体取值的依据，从而使延迟时间的定义更加完善。In this technical solution, if the channel idle is continuously detected in any one of the M delay times, the channel detection with the granularity of the delay time may be stopped after any delay time, and the recovery continues according to the ECCA detection granularity. Channel detection is performed. Through the above technical solution, the definition of when the channel detection stops with the granularity of the delay time is determined, and the basis for determining the specific value of M is provided, so that the definition of the delay time is more perfect.

在上述技术方案中，优选地，还包括：记录所述initial CCA信道检测时间或所述当前ECCA检测粒度结束时的ECCA随机数N的当前数值；以及当在所述M个延迟时间中的所述任一延迟时间内持续检测到信道空闲时，控制保持所述ECCA随机数N的当前数值不变。In the above technical solution, preferably, the method further includes: recording a current value of the initial CCA channel detection time or an ECCA random number N at the end of the current ECCA detection granularity; and when in the M delay times When the channel idle is continuously detected during any delay time, the control keeps the current value of the ECCA random number N unchanged.

在该技术方案中，规定了在延迟时间中随机数N值的递减与否的操作，具体地，通过记录initial CCA信道检测时间或当前ECCA检测粒度结束时的ECCA随机数N的当前数值，以及若在M个延迟时间内的任一延迟时间内持续检测到信道空闲时，则控制保持ECCA随机数N的当前数值不变，即在延迟时间内进行ECCA随机数N的当前数值不递减的操作。In this technical solution, an operation of decrementing the value of the random number N in the delay time is specified, specifically, by recording the current value of the initial CCA channel detection time or the ECCA random number N at the end of the current ECCA detection granularity, and If the channel idle is continuously detected within any delay time of the M delay times, then the control keeps the current value of the ECCA random number N unchanged, that is, the current value of the ECCA random number N is not decremented during the delay time. Work.

本发明的第二方面，提出了一种基于负载的LBT信道检测***，包括：配置模块，用于当在所述基于负载的LBT信道检测的initial CCA信道检测时间或ECCA信道检测时间的当前ECCA检测粒度内检测到信道忙时，在所述initial CCA信道检测时间或所述当前ECCA检测粒度之后配置M个延迟时间；控制模块，用于在所述M个延迟时间内以延迟时间为粒度继续进行所述基于负载的LBT信道检测，其中，M为大于或等于1的整数。In a second aspect of the present invention, a load-based LBT channel detection system is provided, comprising: a configuration module, configured to use an initial ECCA when an initial CCA channel detection time or an ECCA channel detection time is detected on the load-based LBT channel Configuring a delay time after the initial CCA channel detection time or the current ECCA detection granularity is detected in the detection granularity; and the control module is configured to continue with the delay time as the granularity within the M delay time Performing the load-based LBT channel detection, where M is an integer greater than or equal to one.

在上述技术方案中，优选地，所述配置模块具体用于：所述M个延迟时间顺次相邻且每相邻的两个延迟时间之间不存在重叠的部分，以组成第一型延迟时间；或者所述M个延迟时间中的每相邻的两个延迟时间之间存在重叠的部分，以组成第二型延迟时间。In the above technical solution, preferably, the configuration module is specifically configured to: the M delay times are sequentially adjacent and there is no overlapping portion between two adjacent delay times to form a first type delay Time; or there is an overlap between each two adjacent delay times of the M delay times to constitute a second type delay time.

在上述技术方案中，优选地，所述配置模块具体还用于：配置所述第二型延迟时间的除所述重叠的部分外的非重叠的部分由预设数量的所述ECCA检测粒度组成，其中，所述预设数量大于或等于1个且小于所述每个延迟时间中的ECCA检测粒度的总数。In the above technical solution, preferably, the configuration module is further configured to: configure a non-overlapping portion of the second type delay time except the overlapping portion to be composed of a preset number of the ECCA detection granularities Wherein the preset number is greater than or equal to 1 and less than the each The total number of ECCA detection granularities in a delay time.

在该技术方案中，当M个延迟时间中的每相邻的两个延迟时间之间存在重叠的部分时，配置第二型延迟时间的除重叠的部分外的非重叠的部分由预设数量的ECCA检测粒度组成，其中，预设数量大于或等于1个且小于每个延迟时间中的ECCA检测粒度的总数(如果每个延迟时间不是ECCA检测粒度的整数倍，则为小于每个延迟时间中的ECCA检测粒度的向上取整的个数)，即每相邻的两个延迟时间至少有一个ECCA检测粒度未重叠但至少存在重叠的部分，而该重叠的部分可以ECCA检测粒度的整数倍也可以不是(如果每个延迟时间是ECCA检测粒度的整数倍，则重叠的部分也是ECCA检测粒度的整数倍；否则，不是)，根据具体情况配置，以实现更宽松的信道检测。In this technical solution, when there is an overlapping portion between each adjacent two delay times of the M delay times, the non-overlapping portion of the second type delay time except the overlapping portion is configured by a preset number ECCA detection granularity composition, wherein the preset number is greater than or equal to 1 and less than the total number of ECCA detection granularities in each delay time (if each delay time is not an integer multiple of the ECCA detection granularity, then less than each delay time) The ECCA detects the number of rounding up the granularity), that is, at least one ECCA detection granularity per adjacent two delay times does not overlap but at least overlaps, and the overlapping portion can be an integer multiple of the ECCA detection granularity It may or may not be (if each delay time is an integer multiple of the ECCA detection granularity, the overlapping portion is also an integer multiple of the ECCA detection granularity; otherwise, not), configured as appropriate to achieve more relaxed channel detection.

在上述技术方案中，优选地，所述配置模块具体还用于：配置所述M个延迟时间中的每个延迟时间均为ECCA检测粒度的大于或等于2的整数倍。In the above technical solution, preferably, the configuration module is further configured to: configure each of the M delay times to be an integer multiple of the ECCA detection granularity greater than or equal to 2.

在上述技术方案中，优选地，所述配置模块具体还用于：根据发送对象的信道占用优先级配置所述M个延迟时间的组成类型，其中，为所述信道占用优先级靠后的发送对象配置所述第一型延迟时间，以及为所述信道占用优先级靠前的发送对象配置所述第二型延迟时间。In the foregoing technical solution, the configuration module is further configured to: configure, according to a channel occupation priority of the transmission object, a composition type of the M delay times, where the channel is occupied with a lower priority priority. The object configures the first type of delay time and configures the second type of delay time for the transmit object with the channel occupying priority.

在该技术方案中，通过根据发送对象的信道占用优先级(即不同的发送对象)配置M个延迟时间的组成类型，具体地，若发送对象占用信道的优先级靠后，则可配置第一型延迟时间，若发送对象占用信道的优先级靠前，则配置更容易检测到信道空闲的第二型延迟时间，比如，用于下行PDCCH(Physical Downlink Control Channel物理下行控制信道) /EPDCCH(Enhanced Physical Downlink Control Channel增强物理下行控制信道)发送UL grant(上行授权)或发送上行的PUSCH(Physical Uplink Shared Channel物理上行共享信道)优先级高于发送下行PDSCH(Physical Downlink Shared Channel物理下行共享信道)，用于发送下行发现参考信号优先级高于发送下行PDSCH，被非授权频谱发送UL grant调度的PUSCH优先级高于被授权频谱发送UL grant调度的PUSCH，时延敏感的PDSCH(或PUSCH)优先级高于时延不敏感的PDSCH(或PUSCH)，针对以上多种比较对象组合，与后者相比，前者希望更容易抢占到信道，所以前者配置第二型延迟时间，而后者则应配置第一型延迟时间，以实现不同的信道占用概率，并提高信道检测的效率，进而提高信道占用概率。In this technical solution, the component types of the M delay times are configured according to the channel occupation priority (that is, different transmission objects) of the transmission target. Specifically, if the priority of the transmission object occupying the channel is later, the first configuration may be configured. The delay time of the type, if the priority of the channel occupied by the transmitting object is higher, the configuration is easier to detect the second type delay time of the channel idle, for example, for the downlink PDCCH (Physical Downlink Control Channel) /EPDCCH (Enhanced Physical Downlink Control Channel) transmits a UL grant (uplink grant) or transmits an uplink PUSCH (Physical Uplink Shared Channel) with a higher priority than a downlink downlink SCHSCH (Physical Downlink Shared Channel) The shared channel is configured to transmit a downlink discovery reference signal with a higher priority than the downlink PDSCH, and the unlicensed spectrum transmission UL grant scheduling PUSCH priority is higher than the licensed spectrum transmission UL grant scheduling PUSCH, delay-sensitive PDSCH (or PUSCH) has a higher priority than the delay-insensitive PDSCH (or PUSCH). For the above comparison object combinations, the former wants to preempt the channel more easily than the latter, so the former configures the second type delay time, while the latter The first type delay time should be configured to achieve different channel occupancy probabilities and improve channel detection efficiency, thereby increasing channel occupancy probability.

在上述技术方案中，优选地，所述控制模块具体用于：当在所述M个延迟时间中的任一延迟时间内持续检测到信道空闲时，则停止在所述任一延迟时间之后进行所述以延迟时间为粒度的信道检测，并按所述ECCA检测粒度继续进行信道检测。In the above technical solution, preferably, the control module is specifically configured to stop performing after any one of the delay times when any of the M delay times is continuously detected. The channel detection is performed with a granularity of delay time, and channel detection is continued according to the ECCA detection granularity.

在该技术方案中，若在M个延迟时间中的任一延迟时间内持续检测到信道空闲，则可停止在任一延迟时间之后进行以延迟时间为粒度的信道检测，而恢复按ECCA检测粒度继续进行信道检测，通过上述技术方案，确定了以延迟时间为粒度进行信道检测何时停止的定义，同时给出了确定M的具体取值的依据，从而使延迟时间的定义更加完善。In this technical solution, if the channel idle is continuously detected in any one of the M delay times, the channel detection with the granularity of the delay time may be stopped after any delay time, and the recovery continues according to the ECCA detection granularity. Channel detection is performed. Through the above technical solution, the definition of when the channel detection stops with the granularity of the delay time is determined, and the basis for determining the specific value of M is given, so that the definition of the delay time is more perfect.

在上述技术方案中，优选地，还包括：记录模块，用于记录所述initial CCA信道检测时间或所述当前ECCA检测粒度结束时的ECCA随机数N的当前数值；以及所述控制模块还用于：当在所述M个延迟时间中的所述任一延迟时间内持续检测到信道空闲时，控制保持所述ECCA随机数N的当前数值不变。In the above technical solution, preferably, the method further includes: a recording module, configured to record a current value of the initial CCA channel detection time or an ECCA random number N at the end of the current ECCA detection granularity; and the control module further uses And: controlling to keep the current value of the ECCA random number N unchanged when the channel idle is continuously detected during any one of the M delay times.

本发明的第三方面，提出了一种基站，包括：如上述第二方面中任一项所述的基于负载的LBT信道检测***，因此，该基站具有和第二方面中任一项所述的基于负载的LBT信道检测***相同的技术效果，在此不再赘述。According to a third aspect of the present invention, a base station, comprising: the load-based LBT channel detection system according to any one of the preceding aspects, wherein the base station has any one of the second aspect The same technical effects of the load-based LBT channel detection system are not described herein.

本发明的第四方面，提出了一种终端，包括：如上述第二方面中任一项所述的基于负载的LBT信道检测***，因此，该终端具有和第二方面中任一项所述的基于负载的LBT信道检测***相同的技术效果，在此不再赘述。A fourth aspect of the present invention provides a terminal, comprising: the load-based LBT channel detecting system according to any one of the preceding aspects, wherein the terminal has any one of the second aspect The same technical effects of the load-based LBT channel detection system are not described herein.

通过本发明的技术方案，可以实现对延迟时间(defer period)的准确定义，从而可以针对不同的发送对象配置不同的延迟时间，实现不同的信道占用概率，以提高信道检测的效率。With the technical solution of the present invention, an accurate definition of a defer period can be implemented, so that different delay times can be configured for different transmission objects, and different channel occupancy probabilities can be realized to improve channel detection efficiency.

附图说明DRAWINGS

图1示出了非授权频谱的两种工作方式的示意图；Figure 1 shows a schematic diagram of two modes of operation of an unlicensed spectrum;

图2示出了Wi-Fi***的干扰避免规则的示意图；2 is a schematic diagram showing an interference avoidance rule of a Wi-Fi system;

图3示出了相关技术中基于FBE的帧结构的结构示意图；FIG. 3 is a schematic structural diagram of a FBE-based frame structure in the related art;

图4示出了相关技术中基于LBE的帧结构的结构示意图；FIG. 4 is a schematic structural diagram of an LBE-based frame structure in the related art;

图5示出了根据本发明的一个实施例的基于负载的LBT信道检测方法的流程示意图；FIG. 5 is a flow chart showing a load-based LBT channel detecting method according to an embodiment of the present invention; FIG.

图6示出了根据本发明的一个实施例的基于负载的LBT信道检测***的框图；6 shows a block diagram of a load-based LBT channel detection system in accordance with one embodiment of the present invention;

图7示出了根据本发明的一个实施例的基站的框图；Figure 7 shows a block diagram of a base station in accordance with one embodiment of the present invention;

图8示出了根据本发明的一个实施例的终端的框图；Figure 8 shows a block diagram of a terminal in accordance with one embodiment of the present invention;

图9示出了根据本发明的一个实施例的第一型defer period的示意图；Figure 9 shows a schematic diagram of a first type of defer period in accordance with one embodiment of the present invention;

图10示出了根据本发明的一个实施例的第二型defer period的示意图；Figure 10 shows a schematic diagram of a second type of defer period in accordance with one embodiment of the present invention;

图11示出了根据本发明的一个实施例的在第一型defer period内随机数N值不递减的示意图；Figure 11 illustrates randomization within a first type of defer period, in accordance with one embodiment of the present invention. A schematic diagram in which the number of N values is not decremented;

图12示出了根据本发明的一个实施例的在第二型defer period内随机数N值不递减的示意图。Figure 12 is a diagram showing the non-decreasing random number N value in a second type defer period, in accordance with one embodiment of the present invention.

具体实施方式detailed description

为了可以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。The above described objects, features and advantages of the present invention will become more apparent from the detailed description of the appended claims. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

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。In the following description, numerous specific details are set forth in order to provide a full understanding of the invention, but the invention may be practiced otherwise than as described herein. Limitations of the embodiments.

图5示出了根据本发明的一个实施例的基于负载的LBT信道检测方法的流程示意图。FIG. 5 is a flow chart showing a load-based LBT channel detecting method according to an embodiment of the present invention.

如图5所示，根据本发明的一个实施例的基于负载的LBT信道检测方法，包括：步骤502，当在所述基于负载的LBT信道检测的initial CCA信道检测时间或ECCA信道检测时间的当前ECCA检测粒度内检测到信道忙时，在所述initial CCA信道检测时间或所述当前ECCA检测粒度之后配置M个延迟时间；步骤504，在所述M个延迟时间内以延迟时间为粒度继续进行所述基于负载的LBT信道检测，其中，M为大于或等于1的整数。As shown in FIG. 5, a load-based LBT channel detection method according to an embodiment of the present invention includes: Step 502, when an initial CCA channel detection time or an ECCA channel detection time of the load-based LBT channel detection is current When the channel busy is detected in the ECCA detection granularity, M delay times are configured after the initial CCA channel detection time or the current ECCA detection granularity; and in step 504, the delay time is used as the granularity in the M delay times. The load-based LBT channel detection, wherein M is an integer greater than or equal to 1.

在上述技术方案中，优选地，所述M个延迟时间顺次相邻且每相邻的两个延迟时间之间不存在重叠的部分，以组成第一型延迟时间；或者所述M个延迟时间中的每相邻的两个延迟时间之间存在重叠的部分，以组成第二型延迟时间。In the above technical solution, preferably, the M delay times are sequentially adjacent and adjacent to each other There is no overlapping portion between the two delay times to constitute the first type delay time; or there is an overlapping portion between each adjacent two delay times of the M delay times to form the second type delay.

在上述技术方案中，优选地，所述第二型延迟时间的除所述重叠的部分外的非重叠的部分由预设数量的所述ECCA检测粒度组成，其中，所述预设数量大于或等于1个且小于所述每个延迟时间中的ECCA检测粒度的总数。In the above technical solution, preferably, the non-overlapping portion of the second type delay time except the overlapped portion is composed of a preset number of the ECCA detection granularities, wherein the preset number is greater than or Equal to 1 and less than the total number of ECCA detection granularities in each of the delay times.

在该技术方案中，M个延迟时间中的每个延迟时间至少包括大于或等于2的整数个的基于LBE的LBT机制的ECCA检测粒度，以再次长时间的检测信道是否空闲，并限定了延迟时间与ECCA检测粒度的关系，而且当每个延迟时间均为ECCA检测粒度的大于或等于2的整数倍时，第二型延迟时间的重叠的部分和非重叠的部分均可由整数个的ECCA检测粒度组成，从而实现了对延迟时间的进一步定义。In this technical solution, each of the M delay times includes at least an integer number of EBE detection granularities of the LBE-based LBT mechanism greater than or equal to 2 to detect whether the channel is idle for a long time and limit the delay. The relationship between time and ECCA detection granularity, and when each delay time is greater than or equal to an integer multiple of 2 of the ECCA detection granularity, the second type Both the overlapping and non-overlapping portions of the delay time can be composed of an integer number of ECCA detection granularities, thereby enabling further definition of the delay time.

在该技术方案中，通过根据发送对象的信道占用优先级(即不同的发送对象)配置M个延迟时间的组成类型，具体地，若发送对象占用信道的优先级靠后，则可配置第一型延迟时间，若发送对象占用信道的优先级靠前，则配置更容易检测到信道空闲的第二型延迟时间，比如，用于下行PDCCH(Physical Downlink Control Channel物理下行控制信道)/EPDCCH(Enhanced Physical Downlink Control Channel增强物理下行控制信道)发送UL grant(上行授权)或发送上行的PUSCH(Physical Uplink Shared Channel物理上行共享信道)优先级高于发送下行PDSCH(Physical Downlink Shared Channel物理下行共享信道)，用于发送下行发现参考信号优先级高于发送下行PDSCH，被非授权频谱发送UL grant调度的PUSCH优先级高于被授权频谱发送UL grant调度的PUSCH，时延敏感的PDSCH(或PUSCH)优先级高于时延不敏感的PDSCH(或PUSCH)，针对以上多种比较对象组合，与后者相比，前者希望更容易抢占到信道，所以前者配置第二型延迟时间，而后者则应配置第一型延迟时间，以实现不同的信道占用概率，并提高信道检测的效率，进而提高信道占用概率。In this technical solution, the component types of the M delay times are configured according to the channel occupation priority (that is, different transmission objects) of the transmission target. Specifically, if the priority of the transmission object occupying the channel is later, the first configuration may be configured. The delay time of the type, if the priority of the channel occupied by the transmitting object is higher, the configuration is easier to detect the second type delay time of the channel idle, for example, for the downlink PDCCH (Physical Downlink Control Channel)/EPDCCH (Enhanced) The Physical Downlink Control Channel enhances the physical downlink control channel, and transmits the UL grant (uplink grant) or the uplink PUSCH (Physical Uplink Shared Channel) with higher priority than the downlink downlink SCHSCH (Physical Downlink Shared Channel). The priority of transmitting the downlink discovery reference signal is higher than that of the downlink PDSCH, and the priority of the PUSCH scheduled by the unlicensed spectrum to be transmitted by the UL grant is higher than the PUSCH scheduled by the licensed spectrum to transmit the UL grant, and the delay-sensitive PDSCH (or PUSCH) priority PDSCH (or PUSCH) that is higher than the delay-insensitive Compared with the latter, the former wants to preempt the channel more easily, so the former configures the second type delay time, while the latter should configure the first type delay time to achieve different channel occupancy probability and improve The efficiency of channel detection, which in turn increases the probability of channel occupancy.

在该技术方案中，若在M个延迟时间中的任一延迟时间内持续检测到信道空闲，则可停止在任一延迟时间之后进行以延迟时间为粒度的信道检测，而恢复按ECCA检测粒度继续进行信道检测，通过上述技术方案，确定了以延迟时间为粒度进行信道检测何时停止的定义，同时提供了确定 M的具体取值的依据，从而使延迟时间的定义更加完善。In this technical solution, if the channel idle is continuously detected in any one of the M delay times, the channel detection with the granularity of the delay time may be stopped after any delay time, and the recovery continues according to the ECCA detection granularity. Channel detection is performed, and by the above technical solution, a definition of when channel detection is stopped with a granularity of delay time is determined, and a determination is provided The basis for the specific value of M, so that the definition of delay time is more perfect.

在该技术方案中，规定了在延迟时间中随机数N值的递减与否的操作，具体地，通过记录initial CCA信道检测时间或当前ECCA检测粒度结束时的ECCA随机数N的当前数值，以及若在M个延迟时间内的任一延迟时间内持续检测到信道空闲时，则控制保持ECCA随机数N的当前数值不变，即在延迟时间内进行ECCA随机数N的当前数值不递减的操作。In this technical solution, an operation of decrementing the value of the random number N in the delay time is specified, specifically, by recording the current value of the initial CCA channel detection time or the ECCA random number N at the end of the current ECCA detection granularity, and If the channel idle is continuously detected within any delay time of the M delay times, then the control keeps the current value of the ECCA random number N unchanged, that is, the current value of the ECCA random number N is not decremented during the delay time. .

图6示出了根据本发明的一个实施例的基于负载的LBT信道检测***的框图。6 shows a block diagram of a load based LBT channel detection system in accordance with one embodiment of the present invention.

如图6所示，根据本发明的一个实施例的基于负载的LBT信道检测***600，包括：配置模块602，用于当在所述基于负载的LBT信道检测的initial CCA信道检测时间或ECCA信道检测时间的当前ECCA检测粒度内检测到信道忙时，在所述initial CCA信道检测时间或所述当前ECCA检测粒度之后配置M个延迟时间；控制模块604，用于在所述M个延迟时间内以延迟时间为粒度继续进行所述基于负载的LBT信道检测，其中，M为大于或等于1的整数。As shown in FIG. 6, a load-based LBT channel detection system 600 according to an embodiment of the present invention includes: a configuration module 602 for detecting an initial CCA channel detection time or an ECCA channel on the load-based LBT channel. Configuring a delay time after the initial CCA channel detection time or the current ECCA detection granularity is detected within the current ECCA detection granularity of the detection time; the control module 604 is configured to use the M delay time The load-based LBT channel detection is continued with a granularity of delay time, where M is an integer greater than or equal to one.

在上述技术方案中，优选地，所述配置模块602具体用于：所述M 个延迟时间顺次相邻且每相邻的两个延迟时间之间不存在重叠的部分，以组成第一型延迟时间；或者所述M个延迟时间中的每相邻的两个延迟时间之间存在重叠的部分，以组成第二型延迟时间。In the above technical solution, preferably, the configuration module 602 is specifically configured to: the M The delay times are sequentially adjacent and there is no overlapping portion between each adjacent two delay times to constitute a first type delay time; or each adjacent two delay times of the M delay times There are overlapping parts to form a second type of delay time.

在上述技术方案中，优选地，所述配置模块602具体还用于：配置所述第二型延迟时间的除所述重叠的部分外的非重叠的部分由预设数量的所述ECCA检测粒度组成，其中，所述预设数量大于或等于1个且小于所述每个延迟时间中的ECCA检测粒度的总数。In the above technical solution, preferably, the configuration module 602 is further configured to: configure a non-overlapping portion of the second type delay time except the overlapping portion by a preset number of the ECCA detection granularity And a composition, wherein the preset number is greater than or equal to 1 and less than a total number of ECCA detection granularities in each of the delay times.

在上述技术方案中，优选地，所述配置模块602具体还用于：配置所述M个延迟时间中的每个延迟时间均为ECCA检测粒度的大于或等于2的整数倍。In the foregoing technical solution, the configuration module 602 is further configured to: configure each of the M delay times to be an integer multiple of the ECCA detection granularity greater than or equal to 2.

在该技术方案中，M个延迟时间中的每个延迟时间至少包括大于或等于2的整数个的基于LBE的LBT机制的ECCA检测粒度，以再次长时间的检测信道是否空闲，并限定了延迟时间与ECCA检测粒度的关系，而且当每个延迟时间均为ECCA检测粒度的大于或等于2的整数倍时，第二型延迟时间的重叠的部分和非重叠的部分均可由整数个的ECCA检测粒度组成，从而实现了对延迟时间的进一步定义。In this technical solution, each of the M delay times includes at least an integer number of EBE detection granularities of the LBE-based LBT mechanism greater than or equal to 2 to detect whether the channel is idle for a long time and limit the delay. The relationship between time and ECCA detection granularity, and When each delay time is an integer multiple of the ECCA detection granularity greater than or equal to 2, the overlapping portion and the non-overlapping portion of the second type delay time can be composed of an integer number of ECCA detection granularities, thereby realizing the delay time. Further definition.

在上述技术方案中，优选地，所述配置模块602具体还用于：根据发送对象的信道占用优先级配置所述M个延迟时间的组成类型，其中，为所述信道占用优先级靠后的发送对象配置所述第一型延迟时间，以及为所述信道占用优先级靠前的发送对象配置所述第二型延迟时间。In the above technical solution, the configuration module 602 is further configured to: configure a composition type of the M delay times according to a channel occupation priority of the transmission object, where the priority of the channel is lower The transmitting object configures the first type of delay time, and configures the second type of delay time for the transmitting object with the channel occupying priority.

在上述技术方案中，优选地，所述控制模块604具体用于：当在所述M个延迟时间中的任一延迟时间内持续检测到信道空闲时，则停止在所述任一延迟时间之后进行所述以延迟时间为粒度的信道检测，并按所述ECCA检测粒度继续进行信道检测。In the foregoing technical solution, preferably, the control module 604 is specifically configured to stop after any one of the delay times when the channel idle is continuously detected during any one of the M delay times. The channel detection with granularity of delay time is performed, and channel detection is continued according to the ECCA detection granularity.

在该技术方案中，若在M个延迟时间中的任一延迟时间内持续检测到信道空闲，则可停止在任一延迟时间之后进行以延迟时间为粒度的信道检测，而恢复按ECCA检测粒度继续进行信道检测，通过上述技术方案，确定了以延迟时间为粒度进行信道检测何时停止的定义，同时给出了确定M的具体取值的依据，从而使延迟时间的定义更加完善。In this technical solution, if the channel idle is continuously detected in any one of the M delay times, the channel detection with the granularity of the delay time may be stopped after any delay time, and the recovery continues according to the ECCA detection granularity. Perform channel detection, through the above technical solution, The definition of when the channel detection stops with the granularity of the delay time is determined, and the basis for determining the specific value of M is given, so that the definition of the delay time is more perfect.

在上述技术方案中，优选地，还包括：记录模块606，用于记录所述initial CCA信道检测时间或所述当前ECCA检测粒度结束时的ECCA随机数N的当前数值；以及所述控制模块还用于：当在所述M个延迟时间中的所述任一延迟时间内持续检测到信道空闲时，控制保持所述ECCA随机数N的当前数值不变。In the foregoing technical solution, preferably, the method further includes: a recording module 606, configured to record a current value of the initial CCA channel detection time or an ECCA random number N at the end of the current ECCA detection granularity; and the control module further For controlling to keep the current value of the ECCA random number N unchanged when the channel idle is continuously detected during any of the M delay times.

图7示出了根据本发明的一个实施例的基站的框图。Figure 7 shows a block diagram of a base station in accordance with one embodiment of the present invention.

如图7所示，根据本发明的一个实施例的基站700，包括：如上述第二方面中任一项所述的基于负载的LBT信道检测***600，因此，该基站700具有和第二方面中任一项所述的基于负载的LBT信道检测***600相同的技术效果，在此不再赘述。As shown in FIG. 7, a base station 700 according to an embodiment of the present invention, comprising: the load-based LBT channel detecting system 600 according to any one of the foregoing second aspects, the base station 700 has the second aspect The same technical effects of the load-based LBT channel detection system 600 described in any one of the above are not described herein.

图8示出了根据本发明的一个实施例的终端的框图。Figure 8 shows a block diagram of a terminal in accordance with one embodiment of the present invention.

如图8所示，根据本发明的一个实施例的终端800，包括：如上述第二方面中任一项所述的基于负载的LBT信道检测***600，因此，该终端800具有和第二方面中任一项所述的基于负载的LBT信道检测***600相同的技术效果，在此不再赘述。As shown in FIG. 8, a terminal 800 according to an embodiment of the present invention, comprising: the load-based LBT channel detecting system 600 according to any one of the above second aspects, the terminal 800 has a second aspect The same technical effects of the load-based LBT channel detection system 600 described in any one of the above are not described herein.

下面结合图9、图10、图11和图12说明本发明的技术方案。The technical solution of the present invention will be described below with reference to Figs. 9, 10, 11, and 12.

图9示出了根据本发明的一个实施例的第一型defer period的示意图。Figure 9 shows a schematic diagram of a first type of defer period in accordance with one embodiment of the present invention.

图10示出了根据本发明的一个实施例的第二型defer period的示意图。Figure 10 shows a schematic diagram of a second type of defer period in accordance with one embodiment of the present invention.

图11示出了根据本发明的一个实施例的在第一型defer period内随机数N值不递减的示意图。Figure 11 illustrates randomization within a first type of defer period, in accordance with one embodiment of the present invention. A schematic diagram in which the number of N values is not decremented.

第一种是固定的defer period(延迟时间，即第一型延迟时间)位置，如图9所示，这里示意图中一个defer period用4个ECCA slot(ECCA检测粒度)来表示，共配置了3(即M取为3)个defer period。可以看出，每个defer period包含的是不重叠的ECCA slot。如果第一个延迟时间，没有检测出信道持续空闲，则在第二个延迟时间中继续检测。如果检测到信道空闲，则没有第二个及后续的延迟时间，而是恢复ECCA slot的检测粒度，除非再次在ECCA slot中检测到信道忙。然而，本领域技术人员应当知晓，这里仅是以M＝3，每个defer period用4个ECCA slot表示为例进行说明，而M的具体取值以及每个defer period所包含的ECCA slot的个数根据具体情况而定，优选地，M的取值以在第几个defer period内持续检测到信道空闲为依据进行配置。The first type is the fixed defer period (delay time, that is, the first type delay time) position, as shown in Figure 9, where a defer period is represented by 4 ECCA slots (ECCA detection granularity), and a total of 3 are configured. (ie, M is taken as 3) defer period. It can be seen that each defer period contains ECCA slots that do not overlap. If the first delay time does not detect that the channel is continuously idle, then the detection continues in the second delay time. If the channel is detected to be idle, there is no second and subsequent delay time, but the detection granularity of the ECCA slot is restored unless the channel busy is detected again in the ECCA slot. However, those skilled in the art should know that only M=3 is used here, and each defer period is illustrated by using four ECCA slot representations, and the specific value of M and the ECCA slot included in each defer period. The number is determined on a case-by-case basis. Preferably, the value of M is configured based on continuously detecting the channel idleness in the first defer period.

第二种是滑动的defer period(延迟时间，即第二型延迟时间)位置，如图10所示，这里示意图中一个defer period用4个ECCA slot(ECCA检测粒度)来表示，共配置了3(即M取为3)个defer period。可以看出，相邻的延迟时间包含有重叠的3个ECCA slot(重叠的部分)，也就是说后一个defer period比前一个defer period向后滑动了1个ECCA slot(非重叠的部分)的长度。这相对于第一种不包含重叠的ECCA slot来说，LBT机制更宽松，更容易检测到信道空闲。然而，本领域技术人员应当知晓，这里仅是以M＝3，每个defer period用4个ECCA slot表示为例进行说明，而M的具体取值以及每个defer period所包含的ECCA slot的个数根据具体情况而定，优选地，M的取值以在第几个defer period内持续检测到信道空闲为依据进行配置。The second type is the position of the sliding defer period, as shown in Figure 10. Here, a defer period is represented by 4 ECCA slots (ECCA detection granularity), and a total of 3 are configured. (ie, M is taken as 3) defer period. It can be seen that the adjacent delay time includes three ECCA slots (overlapping portions) that overlap, that is, the latter defer period slides back one ECCA slot (non-overlapping portion) from the previous defer period. length. Compared to the first ECCA slot that does not contain overlap, the LBT mechanism is more lenient and it is easier to detect channel idleness. However, those skilled in the art should know that only M=3 is used here, and each defer period is illustrated by using four ECCA slot representations, and the specific value of M and the ECCA slot included in each defer period. The number is determined on a case-by-case basis. Preferably, the value of M is configured based on continuously detecting the channel idleness in the first defer period.

当defer period固定(即第一型延迟时间)时，在defer period之内，N值不递减，如图11所示，ECCA开始时，在前面两个ECCA slot中检测信道空闲，则N变为N-2，在第三个ECCA slot中检测到信道忙，则开启defer period(即进行以延迟时间为粒度的基于负载的LBT信道检测)。在第一个和第二个defer period中，没有持续检测到信道空闲，而第三个defer period期间，持续检测到信道空闲，那么在第三个defer period结束时，还是N-2，在后面的ECCA slot中，若检测到信道空闲，则递减为N-3，N-4……。When the defer period is fixed (that is, the first type delay time), the N value is not decremented within the defer period. As shown in FIG. 11, when the ECCA starts, the channel is idle in the first two ECCA slots, and then N becomes N-2, when the channel is busy in the third ECCA slot, the defer period is turned on (that is, the load-based LBT channel detection with granularity of delay time is performed). In the first and second defer periods, the channel idle is not continuously detected, and during the third defer period, the channel idle is continuously detected, then at the end of the third defer period, it is still N-2, behind In the ECCA slot, if the channel is detected to be idle, it is decremented to N-3, N-4, ....

而当defer period滑动(即第二型延迟时间)时，在defer period之内，N值不递减，如图12所示，ECCA开始时，在前面两个ECCA slot中检测信道空闲，则N变为N-2，在第三个ECCA slot中检测到信道忙，则开启defer period(即进行以延迟时间为粒度的基于负载的LBT信道检测)。在第一个和第二个defer period中，没有持续检测到信道空闲，而第三个defer period期间，持续检测到信道空闲，那么在第三个defer period结束时，还是N-2，在后面的ECCA slot中，若检测到信道空闲，则递减为N-3，N-4……。When the defer period is slid (ie, the second type delay time), the N value is not decremented within the defer period. As shown in FIG. 12, when the ECCA starts, the channel is idle in the first two ECCA slots, and then the N is changed. For N-2, if the channel is busy in the third ECCA slot, the defer period is turned on (that is, the load-based LBT channel detection with granularity of delay time is performed). In the first and second defer periods, the channel idle is not continuously detected, and during the third defer period, the channel idle is continuously detected, then at the end of the third defer period, it is still N-2, behind In the ECCA slot, if the channel is detected to be idle, it is decremented to N-3, N-4, ....

以上结合附图详细说明了本发明的技术方案，可以实现对延迟时间(defer period)的准确定义，从而可以针对不同的发送对象配置不同的延迟时间，实现不同的信道占用概率，以提高信道检测的效率。The technical solution of the present invention is described in detail with reference to the accompanying drawings, and an accurate definition of a defer period can be implemented, so that different delay times can be configured for different transmission objects, and different channel occupancy probabilities can be realized to improve channel detection. s efficiency.

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。 The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

一种基于负载的LBT信道检测方法，其特征在于，包括：A load-based LBT channel detection method, comprising:

当在所述基于负载的LBT信道检测的initial CCA信道检测时间或ECCA信道检测时间的当前ECCA检测粒度内检测到信道忙时，在所述initial CCA信道检测时间或所述当前ECCA检测粒度之后配置M个延迟时间；When the channel busy is detected within the current ECCA detection granularity of the initial CCA channel detection time or the ECCA channel detection time of the load-based LBT channel detection, configured after the initial CCA channel detection time or the current ECCA detection granularity M delay times;

在所述M个延迟时间内以延迟时间为粒度继续进行所述基于负载的LBT信道检测，其中，M为大于或等于1的整数。The load-based LBT channel detection is continued with the delay time as the granularity within the M delay times, where M is an integer greater than or equal to 1.
根据权利要求1所述的基于负载的LBT信道检测方法，其特征在于，The load-based LBT channel detecting method according to claim 1, wherein

所述M个延迟时间顺次相邻且每相邻的两个延迟时间之间不存在重叠的部分，以组成第一型延迟时间；或者The M delay times are sequentially adjacent and there is no overlapping portion between each adjacent two delay times to constitute a first type delay time; or

所述M个延迟时间中的每相邻的两个延迟时间之间存在重叠的部分，以组成第二型延迟时间。There is an overlap between each two adjacent delay times of the M delay times to constitute a second type delay time.
根据权利要求2所述的基于负载的LBT信道检测方法，其特征在于，The load-based LBT channel detecting method according to claim 2, wherein

所述第二型延迟时间的除所述重叠的部分外的非重叠的部分由预设数量的所述ECCA检测粒度组成，其中，所述预设数量大于或等于1个且小于所述每个延迟时间中的ECCA检测粒度的总数。The non-overlapping portion of the second type delay time except the overlapped portion is composed of a preset number of the ECCA detection granularities, wherein the preset number is greater than or equal to 1 and less than each of the The total number of ECCA detection granularities in the delay time.
根据权利要求3所述的基于负载的LBT信道检测方法，其特征在于，The load-based LBT channel detecting method according to claim 3, wherein

所述M个延迟时间中的每个延迟时间均为ECCA检测粒度的大于或等于2的整数倍。Each of the M delay times is an integer multiple of the ECCA detection granularity greater than or equal to 2.
根据权利要求2所述的基于负载的LBT信道检测方法，其特征在于，The load-based LBT channel detecting method according to claim 2, wherein

根据发送对象的信道占用优先级配置所述M个延迟时间的组成类型，其中，为所述信道占用优先级靠后的发送对象配置所述第一型延迟时间，以及为所述信道占用优先级靠前的发送对象配置所述第二型延迟时间。Configuring a composition type of the M delay times according to a channel occupation priority of the transmission object, where the first type delay time is configured for the transmission target with the channel occupation priority lower, and the channel occupation priority is used The first transmission object is configured with the second type delay between.
根据权利要求1至5中任一项所述的基于负载的LBT信道检测方法，其特征在于，The load-based LBT channel detecting method according to any one of claims 1 to 5, characterized in that

当在所述M个延迟时间中的任一延迟时间内持续检测到信道空闲时，则停止在所述任一延迟时间之后进行所述以延迟时间为粒度的信道检测，并按所述ECCA检测粒度继续进行信道检测。When the channel idle is continuously detected during any one of the M delay times, stopping the channel detection with granularity of delay time after the any delay time, and detecting by the ECCA The granularity continues with channel detection.
根据权利要求6所述的基于负载的LBT信道检测方法，其特征在于，还包括：The load-based LBT channel detection method according to claim 6, further comprising:

记录所述initial CCA信道检测时间或所述当前ECCA检测粒度结束时的ECCA随机数N的当前数值；以及Recording the current value of the initial CCA channel detection time or the ECCA random number N at the end of the current ECCA detection granularity;

当在所述M个延迟时间中的所述任一延迟时间内持续检测到信道空闲时，控制保持所述ECCA随机数N的当前数值不变。The control maintains the current value of the ECCA random number N unchanged when the channel idle is continuously detected during any of the M delay times.
一种基于负载的LBT信道检测***，其特征在于，包括：A load-based LBT channel detection system, comprising:

配置模块，用于当在所述基于负载的LBT信道检测的initial CCA信道检测时间或ECCA信道检测时间的当前ECCA检测粒度内检测到信道忙时，在所述initial CCA信道检测时间或所述当前ECCA检测粒度之后配置M个延迟时间；a configuration module, configured to: when the channel busy is detected within a current ECCA detection granularity of the initial CCA channel detection time or the ECCA channel detection time of the load-based LBT channel detection, at the initial CCA channel detection time or the current After the ECCA detects the granularity, M delay times are configured;

控制模块，用于在所述M个延迟时间内以延迟时间为粒度继续进行所述基于负载的LBT信道检测，其中，M为大于或等于1的整数。And a control module, configured to continue the load-based LBT channel detection with the delay time as a granularity in the M delay time, where M is an integer greater than or equal to 1.
根据权利要求8所述的基于负载的LBT信道检测***，其特征在于，所述配置模块具体用于：The load-based LBT channel detection system according to claim 8, wherein the configuration module is specifically configured to:

所述M个延迟时间顺次相邻且每相邻的两个延迟时间之间不存在重叠的部分，以组成第一型延迟时间；或者The M delay times are sequentially adjacent and there is no overlapping portion between each adjacent two delay times to constitute a first type delay time; or

所述M个延迟时间中的每相邻的两个延迟时间之间存在重叠的部分，以组成第二型延迟时间。There is an overlap between each two adjacent delay times of the M delay times to constitute a second type delay time.
根据权利要求9所述的基于负载的LBT信道检测***，其特征在于，所述配置模块具体还用于：The load-based LBT channel detection system according to claim 9, wherein the configuration module is further configured to:

配置所述第二型延迟时间的除所述重叠的部分外的非重叠的部分由预设数量的所述ECCA检测粒度组成，其中，所述预设数量大于或等于1个且小于所述每个延迟时间中的ECCA检测粒度的总数。Configuring a non-overlapping portion of the second type delay time other than the overlapped portion is composed of a preset number of the ECCA detection granularities, wherein the preset number is greater than or equal to 1 And less than the total number of ECCA detection granularities in each of the delay times.
根据权利要求10所述的基于负载的LBT信道检测***，其特征在于，所述配置模块具体还用于：The load-based LBT channel detection system according to claim 10, wherein the configuration module is further configured to:

配置所述M个延迟时间中的每个延迟时间均为ECCA检测粒度的大于或等于2的整数倍。Each of the M delay times is configured to be an integer multiple of the ECCA detection granularity greater than or equal to 2.
根据权利要求9所述的基于负载的LBT信道检测***，其特征在于，所述配置模块具体还用于：The load-based LBT channel detection system according to claim 9, wherein the configuration module is further configured to:

根据发送对象的信道占用优先级配置所述M个延迟时间的组成类型，其中，为所述信道占用优先级靠后的发送对象配置所述第一型延迟时间，以及为所述信道占用优先级靠前的发送对象配置所述第二型延迟时间。Configuring a composition type of the M delay times according to a channel occupation priority of the transmission object, where the first type delay time is configured for the transmission target with the channel occupation priority lower, and the channel occupation priority is used The second type of delay time is configured by the previous transmission object.
根据权利要求8至12中任一项所述的基于负载的LBT信道检测***，其特征在于，所述控制模块具体用于：The load-based LBT channel detection system according to any one of claims 8 to 12, wherein the control module is specifically configured to:

当在所述M个延迟时间中的任一延迟时间内持续检测到信道空闲时，则停止在所述任一延迟时间之后进行所述以延迟时间为粒度的信道检测，并按所述ECCA检测粒度继续进行信道检测。When the channel idle is continuously detected during any one of the M delay times, stopping the channel detection with granularity of delay time after the any delay time, and detecting by the ECCA The granularity continues with channel detection.
根据权利要求13所述的基于负载的LBT信道检测***，其特征在于，还包括：The load-based LBT channel detection system according to claim 13, further comprising:

记录模块，用于记录所述initial CCA信道检测时间或所述当前ECCA检测粒度结束时的ECCA随机数N的当前数值；以及a recording module, configured to record the current value of the initial CCA channel detection time or the ECCA random number N at the end of the current ECCA detection granularity;

所述控制模块还用于：当在所述M个延迟时间中的所述任一延迟时间内持续检测到信道空闲时，控制保持所述ECCA随机数N的当前数值不变。The control module is further configured to: when the channel idle is continuously detected during any one of the M delay times, control to keep the current value of the ECCA random number N unchanged.
一种基站，其特征在于，包括：如权利要求8至14中任一项所述的基于负载的LBT信道检测***。A base station, comprising: the load-based LBT channel detection system according to any one of claims 8 to 14.
一种终端，其特征在于，包括：如权利要求8至14中任一项所述的基于负载的LBT信道检测***。 A terminal, comprising: the load-based LBT channel detection system according to any one of claims 8 to 14.