技术领域Technical field
本发明涉及通信领域，具体而言，涉及一种执行空闲信道评估的反馈方法及装置。The present invention relates to the field of communications, and in particular, to a feedback method and device for performing idle channel assessment.
背景技术Background technique
在相关技术中，长期演进技术(LTE)的通信网络都是部署在授权载波中运营的，随着LTE的发展，一些公司提出了“建议研究LTE部署在非授权载波中的课题”，例如美国的高通公司认为：随着数据业务的快速增长，在不久的将来，授权载波将不能承受快速业务增长带来的巨大的数据量。考虑通过在非授权载波中部署LTE，以此来分担授权载波中的数据流量，可以解决业务增长带来的数据量压力。同时，非授权载波具有以下特点：一方面，由于非授权载波不需要购买，或者载波资源为零成本，因此非授权载波免费或低费用；另一方面，由于个人、企业都可以参与部署，设备商的设备也可以，因此非授权载波的准入要求低；再者，非授权载波具有共享性，通过多个不同系统都运营其中时或者同一系统的不同运营商运营其中时，可以考虑一些共享资源的方式，以提高载波效率。Among related technologies, long-term evolution (LTE) communication networks are all deployed and operated on licensed carriers. With the development of LTE, some companies have proposed “research on the topic of LTE deployed on unlicensed carriers”, such as the United States Qualcomm believes that with the rapid growth of data services, authorized carriers will not be able to withstand the huge amount of data brought by rapid business growth in the near future. Consider deploying LTE in unlicensed carriers to share the data traffic in licensed carriers, which can solve the data volume pressure caused by business growth. At the same time, unlicensed carriers have the following characteristics: On the one hand, because unlicensed carriers do not need to be purchased, or the carrier resources are zero cost, unlicensed carriers are free or low-cost; on the other hand, because individuals and enterprises can participate in the deployment, equipment The equipment of the manufacturer can also be used, so the access requirements for unlicensed carriers are low; furthermore, unlicensed carriers are shared, and when they are operated by multiple different systems or when different operators of the same system operate them, some sharing can be considered resources to improve carrier efficiency.
综上所述，虽然LTE部署在非授权载波中具有明显的优势，但是，在部署的过程中，依然存在问题；其中，无线接入技术多(跨不同的通信标准，协作难，网络拓扑多样)和无线接入站点多(用户数量大，协作难度大，集中式管理开销大)。由于无线接入技术多，非授权载波中将存在各种各样的无线系统，彼此之间难于协调，干扰严重。因此，针对LTE部署在非授权载波中，仍然需要支持非授权载波的管制，多数国家要求系统在非授权载波中部署时，需要支持先听后说机制。通过先听后说机制可以避免相邻系统之间同时使用非授权载波而为彼此带来的干扰。并且进一步引入竞争回退机制，即邻近的系统站点(一般是同一系统的邻近传输节点)，通过竞争回退机制后可以避免相同系统的邻近传输节点同时使用非授权载波时带来的干扰。并且，管制中规定，使用非授权载波的设备(包括基站和用户设备UE)在发送之前都是需要进行先听后说机制，先听后说机制也叫即空闲信道评估(Clear ChannelAssessment，简称为CCA)，也称(Listen Before Talk，简称为LBT)，当信道空闲时，设备才能使用非授权载波信道进行数据发送。HARQ是将FEC与ARQ结合起来使用，称为混合自动重传请求，即Hybird ARQ。HARQ的基本原理如下：In summary, although LTE deployment in unlicensed carriers has obvious advantages, there are still problems during the deployment process; among them, there are many wireless access technologies (across different communication standards, collaboration is difficult, and network topologies are diverse ) and many wireless access sites (large number of users, difficulty in collaboration, and large centralized management overhead). Since there are many wireless access technologies, there will be various wireless systems in unlicensed carriers, which will be difficult to coordinate with each other and cause serious interference. Therefore, when LTE is deployed in unlicensed carriers, it is still necessary to support the control of unlicensed carriers. Most countries require that when systems are deployed in unlicensed carriers, they need to support the listen-before-talk mechanism. The listen-before-talk mechanism can avoid interference caused by adjacent systems using unlicensed carriers at the same time. And further introduces a competition back-off mechanism, that is, adjacent system sites (generally adjacent transmission nodes of the same system), through the competition back-off mechanism can avoid interference caused by adjacent transmission nodes of the same system using unlicensed carriers at the same time. Moreover, regulations stipulate that equipment using unlicensed carriers (including base stations and user equipment UE) needs to perform a listen-before-talk mechanism before transmitting. The listen-before-talk mechanism is also called Clear Channel Assessment (Clear Channel Assessment, referred to as CCA), also known as (Listen Before Talk, abbreviated as LBT), when the channel is idle, the device can use the unlicensed carrier channel to send data. HARQ combines FEC and ARQ, which is called hybrid automatic repeat request, or Hybird ARQ. The basic principles of HARQ are as follows:
在接收端使用FEC技术纠正所有错误中能够纠正的那一部分。FEC technology is used at the receiving end to correct the portion of all errors that can be corrected.
通过错误检测判断不能纠正错误的数据包。Error detection determines that erroneous packets cannot be corrected.
丢弃不能纠错的数据包，向发射端请求重新发送相同的数据包。Discard the data packets that cannot be corrected and request the transmitter to resend the same data packets.
在LTE系统中，支持HARQ，并作为LTE系统最主要的特性之一，提升了数据传输的可靠性。但是在非授权载波或者是授权频谱辅助接入(License Assisted Access，简称为LAA)系统(LAA系统，即将LTE部署在非授权载波的系统,或者，在非授权载波使用LTE的技术的系统)中，HARQ面临新的问题。In the LTE system, HARQ is supported, and as one of the most important features of the LTE system, it improves the reliability of data transmission. However, in unlicensed carriers or licensed spectrum assisted access (License Assisted Access, referred to as LAA) systems (LAA systems, systems that deploy LTE on unlicensed carriers, or systems that use LTE technology on unlicensed carriers) , HARQ faces new problems.
在LAA系统中，上行传输时，由于UE在被调度传输之后，UE实际传输之前需要执行CCA检测信道是否空闲，当信道空闲时，UE才能够按照之前调度来完成对应的数据传输。但是目前UE如果执行CCA失败后，基站并不清楚UE是否按照之前调度发送了对应的上行数据，当这种情况发生在重传过程中时，可能会产生下面几个影响。第一，导致UE实际重传的次数，低于标准规定的期望重传的次数，最终导致HARQ重传的性能下降。第二，导致HARQ合并时，可能将无效的数据进行了合并，影响HARQ合并的性能。In the LAA system, during uplink transmission, after the UE is scheduled to transmit, the UE needs to perform CCA to detect whether the channel is idle before actual transmission. When the channel is idle, the UE can complete the corresponding data transmission according to the previous schedule. However, if the UE fails to perform CCA at present, the base station does not know whether the UE has sent the corresponding uplink data according to the previous schedule. When this happens during the retransmission process, the following effects may occur. First, the actual number of retransmissions by the UE is lower than the expected number of retransmissions stipulated in the standard, which ultimately leads to a degradation in HARQ retransmission performance. Second, during HARQ merging, invalid data may be merged, affecting the performance of HARQ merging.
针对相关技术中存在的上述问题，目前尚未发现有效的解决方案。No effective solution has yet been found for the above problems existing in related technologies.
发明内容Contents of the invention
本发明提供了一种执行空闲信道评估的反馈方法及装置，以至少解决相关技术在LAA系统中由于CCA失败导致终端重传性能下降的问题。The present invention provides a feedback method and device for performing idle channel assessment, so as to at least solve the problem of terminal retransmission performance degradation due to CCA failure in related technologies in the LAA system.
根据本发明的一个方面，提供了一种执行空闲信道评估的反馈方法，包括：在用户设备UE被调度在非授权载波第n个子帧中发送上行数据时，在发送所述上行数据之前，执行空闲信道评估CCA检测，其中，所述n为自然数；将所述CCA检测的检测结果反馈给基站。According to an aspect of the present invention, a feedback method for performing idle channel assessment is provided, including: when the user equipment UE is scheduled to send uplink data in the nth subframe of an unlicensed carrier, before sending the uplink data, perform Idle channel evaluation CCA detection, where n is a natural number; the detection result of the CCA detection is fed back to the base station.
进一步地，所述检测结果包括以下之一：成功、失败，将所述CCA检测的检测结果反馈给基站包括以下方式至少之一：在所述CCA检测失败时，将所述检测结果通过物理上行控制信道PUCCH发送给基站，或，将所述检测结果通过物理上行共享信道PUSCH中发送上行控制信息UCI的资源发送给基站；在所述CCA检测成功时，将所述检测结果通过PUCCH发送给基站，或，将所述检测结果通过PUSCH中发送UCI的资源发送给基站；在所述CCA检测成功或失败时，将所述检测结果通过PUCCH发送给基站，或，将所述检测结果通过PUSCH中发送UCI的资源发送给基站。Further, the detection result includes one of the following: success or failure. Feedback of the detection result of the CCA detection to the base station includes at least one of the following methods: when the CCA detection fails, the detection result is transmitted through the physical uplink The control channel PUCCH is sent to the base station, or the detection result is sent to the base station through the resource for sending uplink control information UCI in the physical uplink shared channel PUSCH; when the CCA detection is successful, the detection result is sent to the base station through the PUCCH , or, the detection result is sent to the base station through the resource for sending UCI in PUSCH; when the CCA detection is successful or fails, the detection result is sent to the base station through PUCCH, or the detection result is sent to the base station through PUSCH. Send UCI resources to the base station.
进一步地，在所述CCA检测失败时，将所述检测结果通过PUCCH资源发送给基站，包括：通过物理上行控制信道PUCCH格式1将所述检测结果发送给基站；和/或在所述CCA检测成功时，将所述检测结果通过PUCCH资源发送给基站，包括：通过物理上行控制信道PUCCH格式1将所述检测结果发送给基站；其中，所述PUCCH格式1包括以下至少之一：与PUCCH格式1相同的编码方式、时域资源分配方式、频域资源分配方式、码域资源分配方式、映射发送方式。Further, when the CCA detection fails, sending the detection result to the base station through PUCCH resources includes: sending the detection result to the base station through the physical uplink control channel PUCCH format 1; and/or performing the CCA detection on When successful, sending the detection result to the base station through PUCCH resources includes: sending the detection result to the base station through the physical uplink control channel PUCCH format 1; wherein the PUCCH format 1 includes at least one of the following: and PUCCH format 1 The same coding method, time domain resource allocation method, frequency domain resource allocation method, code domain resource allocation method, and mapping transmission method.
进一步地，在所述CCA检测成功或失败时，将所述检测结果通过PUCCH资源发送给基站，包括：通过PUCCH格式1a将所述检测结果发送给基站；其中，所述PUCCH格式1a包括以下至少之一：与PUCCH格式1a相同的编码方式、时域资源分配方式、频域资源分配方式、码域资源分配方式、映射发送方式。Further, when the CCA detection succeeds or fails, sending the detection result to the base station through PUCCH resources includes: sending the detection result to the base station through PUCCH format 1a; wherein the PUCCH format 1a includes at least the following: One: the same coding method, time domain resource allocation method, frequency domain resource allocation method, code domain resource allocation method, and mapping transmission method as PUCCH format 1a.
进一步地，通过基站和UE约定的方式为所述检测结果和确认/不确认ACK/NACK或调度请求SR分配不同的PUCCH格式1或PUCCH格式1a的资源索引或通过基站和UE约定的方式通过第n-k子帧中承载的上行授权信息的物理下行控制信道PDCCH或增强的PDCCH的控制信道元素CCE中索引号最小的CCE来推算第n子帧中所述UE反馈所述检测结果的资源索引/>的取值；其中，所述/>为PUCCH格式1或1a的资源索引，所述k为上行授权信息发送子帧与对应的上行数据发送子帧的间隔子帧数。Further, allocate different resource indexes of PUCCH format 1 or PUCCH format 1a to the detection results and confirmation/non-confirmation ACK/NACK or scheduling request SR in a manner agreed between the base station and the UE. Or in a manner agreed between the base station and the UE, the UE in the nth subframe is deduced from the CCE with the smallest index number among the physical downlink control channel PDCCH or the control channel element CCE of the enhanced PDCCH carrying the uplink grant information in the nkth subframe. Feedback the resource index of the detection results/> The value of; among them, the/> is the resource index of PUCCH format 1 or 1a, and k is the number of subframes between the uplink grant information sending subframe and the corresponding uplink data sending subframe.
进一步地，所述依据协议LTE TS 36.211vd00推算所述UE发送所述检测结果的时域、频域、码域资源。Further, the According to the protocol LTE TS 36.211vd00, the time domain, frequency domain and code domain resources used by the UE to send the detection result are estimated.
进一步地，将所述CCA检测的检测结果反馈给所述基站包括：在授权载波中与所述第n个子帧对应的子帧或对应的子帧之后的第一个子帧中将所述CCA检测的检测结果反馈给所述基站。Further, feeding back the detection result of the CCA detection to the base station includes: transmitting the CCA in the subframe corresponding to the n-th subframe or the first subframe after the corresponding subframe in the licensed carrier. The detected detection results are fed back to the base station.
进一步地，在所述第n个子帧在授权载波中对应的子帧为下行子帧时，通过基站和UE约定的方式在所述第n个子帧在授权载波中对应的子帧后的第1个上行子帧中将所述CCA检测的检测结果反馈给基站，和/或，在所述第n个子帧在授权载波中对应的子帧之后的第1个子帧为下行子帧时，通过基站和UE约定的方式在所述第n个子帧在授权载波中对应的子帧之后的第1个子帧后的第1个上行子帧中将所述CCA检测的检测结果反馈给基站。Further, when the subframe corresponding to the n-th subframe in the licensed carrier is a downlink subframe, the first subframe after the subframe corresponding to the n-th subframe in the licensed carrier is used in a manner agreed between the base station and the UE. The detection result of the CCA detection is fed back to the base station in uplink subframes, and/or, when the first subframe after the corresponding subframe of the nth subframe in the licensed carrier is a downlink subframe, the base station In the manner agreed with the UE, the detection result of the CCA detection is fed back to the base station in the first uplink subframe after the first subframe after the nth subframe in the licensed carrier.
进一步地，在所述基站和UE约定在n个子帧后的第1个上行子帧或在n个子帧后的第2个上行子帧将所述CCA检测的检测结果反馈给基站时，所述检测结果还包括所述UE累计的CCA失败或成功次数。Further, when the base station and the UE agree to feed back the detection result of the CCA detection to the base station in the first uplink subframe after n subframes or in the second uplink subframe after n subframes, the The detection result also includes the cumulative number of CCA failures or successes of the UE.
进一步地，当基站在第n-k个子帧中发送上行授权信息的PDCCH或增强的PDCCH时，通过基站和UE约定的方式在所述UE在主载波的第n个或第n+1个子帧中反馈所述检测结果给基站，其中，所述k为上行授权信息发送子帧与对应的上行数据发送子帧的间隔子帧数。Further, when the base station sends the PDCCH or enhanced PDCCH of the uplink grant information in the n-k subframe, the base station and the UE provide feedback in the nth or n+1 subframe of the main carrier in a manner agreed between the base station and the UE. The detection result is sent to the base station, where k is the number of subframes between the uplink authorization information sending subframe and the corresponding uplink data sending subframe.
进一步地，在所述检测结果为失败时，UE将不能按照上行授权信息发送上行数据第n个子帧，UE将本次重传视为无效，且将本次重传的次数排除从实际重传次数计数结果中。Further, when the detection result is failure, the UE will not be able to send the nth subframe of uplink data according to the uplink authorization information, the UE will regard this retransmission as invalid, and exclude the number of this retransmission from the actual retransmission. count results.
进一步地，当基站接收到第n个子帧对应的CCA检测结果，且为失败时，或者基站根据UE反馈的CCA检测结果获知UE由于CCA检测失败时，所述基站将本次重传的次数排除从实际重传次数计数结果中。Further, when the base station receives the CCA detection result corresponding to the n-th subframe and it fails, or when the base station learns that the UE failed the CCA detection based on the CCA detection result fed back by the UE, the base station excludes the number of retransmissions this time. From the actual retransmission count results.
进一步地，当基站接收到第n个子帧对应的CCA检测结果，且为失败时，或者基站根据UE反馈的CCA检测结果获知UE由于CCA检测失败时，所述基站将接收到的信号放弃进行所述上行数据的混合自动重传请求HARQ合并。Further, when the base station receives the CCA detection result corresponding to the n-th subframe and it fails, or when the base station learns that the UE failed the CCA detection based on the CCA detection result fed back by the UE, the base station will give up the received signal. The above-mentioned hybrid automatic repeat transmission request HARQ combining of the upstream data.
根据本发明的另一方面，提供了一种执行空闲信道评估的反馈装置，包括：检测模块，用于在用户设备UE被调度在非授权载波第n个子帧中发送上行数据时，在发送所述上行数据之前，执行空闲信道评估CCA检测，其中，所述n为自然数；反馈模块，用于将所述CCA检测的检测结果反馈给基站。According to another aspect of the present invention, a feedback device for performing idle channel assessment is provided, including: a detection module configured to detect when the user equipment UE is scheduled to send uplink data in the nth subframe of an unlicensed carrier. Before the uplink data, idle channel assessment CCA detection is performed, where n is a natural number; a feedback module is used to feed back the detection results of the CCA detection to the base station.
进一步地，所述检测结果包括以下之一：成功、失败，反馈模块包括：第一反馈单元，用于在所述CCA检测失败时，将所述检测结果通过PUCCH发送给基站，或，将所述检测结果通过PUSCH中发送UCI的资源发送给基站；第二反馈单元，用于在所述CCA检测成功时，将所述检测结果通过PUCCH发送给基站，或，将所述检测结果通过PUSCH中发送UCI的资源发送给基站；第三反馈单元，用于在所述CCA检测成功或失败时，将所述检测结果通过PUCCH发送给基站，或，将所述检测结果通过PUSCH中发送UCI的资源发送给基站。Further, the detection result includes one of the following: success or failure, and the feedback module includes: a first feedback unit, configured to send the detection result to the base station through the PUCCH when the CCA detection fails, or to send the detection result to the base station through the PUCCH. The detection result is sent to the base station through the UCI sending resource in the PUSCH; the second feedback unit is used to send the detection result to the base station through the PUCCH when the CCA detection is successful, or to send the detection result to the base station through the PUSCH. The resources for sending UCI are sent to the base station; the third feedback unit is used to send the detection result to the base station through PUCCH when the CCA detection succeeds or fails, or, the detection result is sent through the resource of UCI in PUSCH. sent to the base station.
通过本发明，采用在用户设备UE被调度在第n个子帧中发送上行数据时，在发送所述上行数据之前，执行空闲信道评估CCA检测，再将所述CCA检测的检测结果反馈给基站，解决了相关技术在LAA系统中由于CCA失败导致终端重传性能下降的问题，使得基站可以明确的获知被调度的UE在对应的子帧中是否发送了对应的上行数据，从而基站能够明确本次接收的数据是否为有效数据，以便于基站对于接收数据的使用，在重传时避免了无效数据参与HARQ合并，也可以保证HARQ重传的实际次数不受CCA检测失败的影响，进而达到了提高数据传输效率的效果。Through the present invention, when the user equipment UE is scheduled to send uplink data in the nth subframe, before sending the uplink data, the idle channel assessment CCA detection is performed, and then the detection result of the CCA detection is fed back to the base station. It solves the problem of terminal retransmission performance degradation due to CCA failure in related technologies in the LAA system, so that the base station can clearly know whether the scheduled UE has sent the corresponding uplink data in the corresponding subframe, so that the base station can clearly know whether the scheduled UE has sent the corresponding uplink data in the corresponding subframe. Whether the received data is valid data, so that the base station can use the received data, avoid invalid data from participating in HARQ merging during retransmission, and also ensure that the actual number of HARQ retransmissions is not affected by CCA detection failure, thus achieving improvement The effect of data transmission efficiency.
附图说明Description of the drawings
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：The drawings described here are used to provide a further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached picture:
图1是根据本发明实施例的执行空闲信道评估的反馈方法的流程图；Figure 1 is a flow chart of a feedback method for performing idle channel assessment according to an embodiment of the present invention;
图2是根据本发明实施例的执行空闲信道评估的反馈装置的结构框图；Figure 2 is a structural block diagram of a feedback device for performing idle channel assessment according to an embodiment of the present invention;
图3是根据本发明实施例的执行空闲信道评估的反馈装置的可选结构框图；Figure 3 is an optional structural block diagram of a feedback device for performing idle channel assessment according to an embodiment of the present invention;
图4是根据本发明实施例1的检测结果反馈示意图；Figure 4 is a schematic diagram of detection result feedback according to Embodiment 1 of the present invention;
图5是根据本发明实施例3基于TDD模式的检测结果反馈示意图；Figure 5 is a schematic diagram of detection result feedback based on TDD mode according to Embodiment 3 of the present invention;
图6为根据本发明可选实施例的基站侧基本处理流程；Figure 6 is a basic processing flow at the base station side according to an optional embodiment of the present invention;
图7为根据本发明可选实施例的UE侧基本处理流程。Figure 7 is a basic processing flow on the UE side according to an optional embodiment of the present invention.
具体实施方式Detailed ways
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other.
需要说明的是，本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
在本实施例中提供了一种执行空闲信道评估的反馈方法，图1是根据本发明实施例的执行空闲信道评估的反馈的方法流程图，如图1所示，该流程包括如下步骤：This embodiment provides a feedback method for performing idle channel assessment. Figure 1 is a flow chart of a method for performing feedback on idle channel assessment according to an embodiment of the present invention. As shown in Figure 1, the process includes the following steps:
步骤S102，在用户设备UE被调度在非授权载波第n个子帧中发送上行数据时，在发送上行数据之前，执行空闲信道评估CCA检测，其中，n为自然数；Step S102: When the user equipment UE is scheduled to send uplink data in the nth subframe of the unlicensed carrier, before sending the uplink data, perform idle channel assessment CCA detection, where n is a natural number;
步骤S104，将CCA检测的检测结果反馈给基站。Step S104: Feed back the detection results of CCA detection to the base station.
通过上述步骤，采用在用户设备UE被调度在第n个子帧中发送上行数据时，在发送上行数据之前，执行空闲信道评估CCA检测，再将CCA检测的检测结果反馈给基站，解决了相关技术在LAA系统中由于CCA失败导致终端重传性能下降的问题，使得基站可以明确的获知被调度的UE在对应的子帧中是否发送了对应的上行数据，从而基站能够明确本次接收的数据是否为有效数据，以便于基站对于接收数据的使用，在重传时避免了无效数据参与HARQ合并，也可以保证HARQ重传的实际次数不受CCA检测失败的影响，进而达到了提高数据传输效率的效果。Through the above steps, when the user equipment UE is scheduled to send uplink data in the n-th subframe, before sending the uplink data, the idle channel assessment CCA detection is performed, and then the detection result of the CCA detection is fed back to the base station, which solves the problem of related technologies. In the LAA system, due to the problem of terminal retransmission performance degradation due to CCA failure, the base station can clearly know whether the scheduled UE has sent the corresponding uplink data in the corresponding subframe, so that the base station can know whether the data received this time is For valid data, it is convenient for the base station to use the received data, and it avoids invalid data from participating in HARQ merging during retransmission. It can also ensure that the actual number of HARQ retransmissions is not affected by CCA detection failure, thus achieving the goal of improving data transmission efficiency. Effect.
在本实施中，第n个子帧即子帧n，对应的，下文所述的第n个子帧后的第1个子帧即子帧n+1，依次类推。In this implementation, the nth subframe is subframe n, and correspondingly, the first subframe after the nth subframe described below is subframe n+1, and so on.
可选的，将CCA检测的检测结果反馈给基站至少包括下列方式：Optionally, feedback of CCA detection results to the base station includes at least the following methods:
方式1，当UE被调度在子帧n中发送上行数据时，在上行数据发送之前UE执行CCA检测，如果CCA检测失败(即UE不可以使用非授权载波发送数据)，UE则将CCA检测结果发送给基站。如果CCA检测成功(即UE可以使用非授权载波发送数据)，UE则不发送CCA检测结果信息给基站。基站在对应的子帧中没有接收到UE的CCA检测结果反馈信息时，基站认为UECCA检测成功，且已发送对应的上行数据。如果基站接收到UE发送的CCA检测结果为失败，基站认为UE没有发送对应的上行数据。Method 1, when the UE is scheduled to send uplink data in subframe n, the UE performs CCA detection before sending the uplink data. If the CCA detection fails (that is, the UE cannot use an unlicensed carrier to send data), the UE will use the CCA detection result. sent to the base station. If the CCA detection is successful (that is, the UE can use an unlicensed carrier to send data), the UE does not send CCA detection result information to the base station. When the base station does not receive the UE's CCA detection result feedback information in the corresponding subframe, the base station considers that the UECCA detection is successful and has sent the corresponding uplink data. If the base station receives the CCA detection result sent by the UE as failed, the base station considers that the UE did not send the corresponding uplink data.
方式2，当UE被调度在子帧n中发送上行数据时，在上行数据发送之前UE执行CCA检测，如果CCA检测成功，UE则将CCA检测结果发送给基站。如果CCA检测失败，UE则不发送CCA检测结果信息给基站。基站在对应的子帧中没有接收到UE的CCA检测结果反馈信息时，基站认为UECCA检测失败，且没有发送对应的上行数据。Method 2, when the UE is scheduled to send uplink data in subframe n, the UE performs CCA detection before sending the uplink data. If the CCA detection is successful, the UE sends the CCA detection result to the base station. If the CCA detection fails, the UE does not send CCA detection result information to the base station. When the base station does not receive the CCA detection result feedback information of the UE in the corresponding subframe, the base station considers that the UECCA detection has failed and does not send the corresponding uplink data.
方式3，当UE被调度在子帧n中发送上行数据时，在上行数据发送之前UE执行CCA检测，UE则将CCA检测结果发送给基站。其中检测结果包括：成功、失败。基站和UE处理参考方式1和方式2。Method 3: When the UE is scheduled to send uplink data in subframe n, the UE performs CCA detection before sending the uplink data, and the UE sends the CCA detection result to the base station. The test results include: success and failure. For base station and UE processing, refer to Mode 1 and Mode 2.
在本实施例中，检测结果可以但不限于为：检测成功、检测失败。在具体将上述检测结果发送给基站时，可以通过物理上行控制信道PUCCH发送给基站，也可以将所述检测结果通过物理上行共享信道PUSCH中发送上行控制信息UCI的资源发送给基站In this embodiment, the detection result may be, but is not limited to, detection success or detection failure. When specifically sending the above detection results to the base station, the detection results can be sent to the base station through the physical uplink control channel PUCCH, or the detection results can be sent to the base station through the resources for sending uplink control information UCI in the physical uplink shared channel PUSCH.
可选的，方式1中基站和UE约定通过上行PUCCH格式1来反馈CCA失败，或者，方式2中基站和UE约定通过上行PUCCH格式1来反馈CCA成功。方式3，基站和UE约定通过上行PUCCH格式1a来反馈CCA检测的结果。Optionally, in method 1, the base station and the UE agree to feedback CCA failure through uplink PUCCH format 1, or in method 2, the base station and UE agree to feedback CCA success through uplink PUCCH format 1. Method 3: The base station and the UE agree to feed back the CCA detection results through the uplink PUCCH format 1a.
在根据本实施例的可选实施例方式中，基站为UE发送PUCCH格式1或格式1a确定不同于其他UE或不同于其他的ACK/NACK的资源索引其中/>的含义参考36.211vd00协议。或者，基站通过为不同UE配置的DCI的最小CCE索引不同来确定不同UE的不同，其中，基站和UE根据调度的DCI信息的最小CCE索引确定对应的/>In an optional embodiment according to this embodiment, the base station sends PUCCH format 1 or format 1a to the UE to determine a resource index that is different from other UEs or different from other ACK/NACKs. Among them/> The meaning refers to the 36.211vd00 protocol. Alternatively, the base station determines the minimum CCE index of the DCI configured for different UEs by using different minimum CCE indexes. Different, wherein the base station and the UE determine the corresponding /> based on the minimum CCE index of the scheduled DCI information.
可选的，基站和UE根据计算对应的接收和发送资源的规则与LTE的协议36.211vd00的规定相同。Optional, base station and UE based on The rules for calculating the corresponding receiving and transmitting resources are the same as those specified in LTE protocol 36.211vd00.
在根据本实施例的可选实施例方式中，UE在授权载波中与子帧n对应的子帧或对应的子帧之后的第一个子帧中发送方式1、2、3中的反馈信息。In an optional embodiment according to this embodiment, the UE sends the feedback information in methods 1, 2, and 3 in the subframe corresponding to subframe n or the first subframe after the corresponding subframe in the authorized carrier. .
在根据本实施例的可选实施例方式中，子帧n在授权载波中对应的子帧或对应的子帧之后的第一个子帧为下行子帧时，基站和UE约定顺延至第一个上行子帧进行反馈。尤其是主载波是时分双工TDD的场景下,下文将对TDD场景进行说明。当顺延发生时，基站和UE约定，方式1或方式2下UE反馈的为累计的CCA失败或成功次数。当基站在子帧n-k中发送上行授权信息的PDCCH时，基站和UE约定，UE在子帧n或n+1中，且在主载波中发送UE在子帧n中发送上行数据之前的CCA检测情况。In an optional embodiment according to this embodiment, when the corresponding subframe of subframe n in the licensed carrier or the first subframe after the corresponding subframe is a downlink subframe, the base station and the UE agree to postpone it to the first subframe. feedback in uplink subframes. Especially in the scenario where the main carrier is time division duplex TDD, the TDD scenario will be explained below. When a delay occurs, the base station and the UE agree that the feedback from the UE in Mode 1 or Mode 2 is the accumulated number of CCA failures or successes. When the base station sends the PDCCH of the uplink grant information in subframe n-k, the base station and the UE agree that the UE is in subframe n or n+1, and the CCA detection before the UE sends uplink data in subframe n is sent in the main carrier. Condition.
在根据本实施例的可选实施例方式中，当UE确定子帧n的数据不能被发送的原因是因为对应的CCA检测失败导致的，UE认为本次重传是无效的，UE不将本次重传次数计算在实际的重传次数内。或者，当基站获知UE在子帧n中的数据没有发送由于对应的CCA检测失败，则基站认为本次重传是无效的，基站和UE不将本次重传次数计算在实际要求的重传次数内。In an optional embodiment according to this embodiment, when the UE determines that the reason why the data of subframe n cannot be sent is because the corresponding CCA detection fails, the UE considers that this retransmission is invalid, and the UE does not The number of retransmissions is calculated into the actual number of retransmissions. Or, when the base station learns that the UE's data in subframe n has not been sent due to the corresponding CCA detection failure, the base station considers this retransmission to be invalid, and the base station and the UE do not count the number of retransmissions in the actual required retransmissions. within the number of times.
在根据本实施例的可选实施例方式中，当基站获知UE在子帧n中的数据没有发送由于对应的CCA检测失败，则基站不将接收信号进行HARQ合并。In an optional embodiment according to this embodiment, when the base station learns that the UE's data in subframe n is not sent because the corresponding CCA detection fails, the base station does not perform HARQ combining of the received signals.
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的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(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本发明各个实施例的方法。Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is Better implementation. Based on this understanding, the technical solution of the present invention can be embodied in the form of a software product in essence or the part that contributes to the existing technology. The computer software product is stored in a storage medium (such as ROM/RAM, disk, CD), including several instructions to cause a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods of various embodiments of the present invention.
在本实施例中还提供了一种执行空闲信道评估的反馈装置，该装置用于实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。This embodiment also provides a feedback device for performing idle channel assessment. This device is used to implement the above embodiments and preferred implementations. What has been described will not be described again. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.
图2是根据本发明实施例的执行空闲信道评估的反馈装置的结构框图，如图2所示，该装置包括：Figure 2 is a structural block diagram of a feedback device for performing idle channel assessment according to an embodiment of the present invention. As shown in Figure 2, the device includes:
检测模块20，用于在用户设备UE被调度在非授权载波第n个子帧中发送上行数据时，在发送上行数据之前，执行空闲信道评估CCA检测，其中，n为自然数；The detection module 20 is configured to perform idle channel assessment CCA detection before sending the uplink data when the user equipment UE is scheduled to send uplink data in the nth subframe of the unlicensed carrier, where n is a natural number;
反馈模块22，用于将CCA检测的检测结果反馈给基站。The feedback module 22 is used to feed back the detection results of CCA detection to the base station.
图3是根据本发明实施例的执行空闲信道评估的反馈装置的可选结构框图，如图3所示，该装置除包括图2所示的所有模块外，反馈模块22还包括：Figure 3 is an optional structural block diagram of a feedback device for performing idle channel assessment according to an embodiment of the present invention. As shown in Figure 3, in addition to all the modules shown in Figure 2, the feedback module 22 also includes:
第一反馈单元30，用于在所述CCA检测失败时，将所述检测结果通过PUCCH发送给基站，或，将所述检测结果通过PUSCH中发送UCI的资源发送给基站；The first feedback unit 30 is configured to send the detection result to the base station through the PUCCH when the CCA detection fails, or send the detection result to the base station through the UCI sending resource in the PUSCH;
第二反馈单元32，用于在所述CCA检测成功时，将所述检测结果通过PUCCH发送给基站，或，将所述检测结果通过PUSCH中发送UCI的资源发送给基站；The second feedback unit 32 is configured to send the detection result to the base station through the PUCCH when the CCA detection is successful, or send the detection result to the base station through the UCI sending resource in the PUSCH;
第三反馈单元34，用于在所述CCA检测成功或失败时，将所述检测结果通过PUCCH发送给基站，或，将所述检测结果通过PUSCH中发送UCI的资源发送给基站。The third feedback unit 34 is configured to send the detection result to the base station through the PUCCH when the CCA detection succeeds or fails, or sends the detection result to the base station through the UCI sending resource in the PUSCH.
需要说明的是，第一反馈单元30、第二反馈单元32、第三反馈单元34可以同时设置在反馈模块22中，也可以将其中的一个或多个设置在反馈模块22中。It should be noted that the first feedback unit 30 , the second feedback unit 32 , and the third feedback unit 34 may be provided in the feedback module 22 at the same time, or one or more of them may be provided in the feedback module 22 .
下面结合根据本发明的可选实施例进行详细具体的说明：A detailed description is given below in conjunction with optional embodiments according to the present invention:
包括以下方案：Includes the following options:
方案1：当UE被调度传输在非授权载波中时，UE反馈被调度数据之前的CCA失败的信息，包括：CCA失败，或CCA成功。具体通过PUCCH进行反馈，包括使用：ACK/NACK进行上述反馈，可以通过授权载波或所述非授权载波。Solution 1: When the UE is scheduled to transmit on an unlicensed carrier, the UE feeds back the CCA failure information before the scheduled data, including: CCA failure, or CCA success. Specifically, feedback is performed through PUCCH, including using ACK/NACK to perform the above feedback, which can be through a licensed carrier or the unlicensed carrier.
方案2：UE反馈在被调度数据发送之前的CCA失败的信息，当基站接收到该信息后，则认为本次重传的数据没有发送，基站将这次接收的数据不与之间的接收数据进行HARQ合并。Option 2: The UE feeds back the CCA failure information before the scheduled data is sent. When the base station receives this information, it considers that the data retransmitted this time has not been sent, and the base station will compare the data received this time with the received data in between. Perform HARQ merging.
方案3：UE反馈在被调度数据发送之前的CCA失败的信息，基站和UE约定，从配置的UE重传中次数中剔除由于CCA失败导致重传未发送的次数，使得实际重传次数满足配置的要求。例如不计入配置的重传次数。Solution 3: The UE feeds back information about CCA failure before the scheduled data is sent. The base station and the UE agree to exclude the number of retransmissions due to CCA failure from the configured number of retransmissions for the UE, so that the actual number of retransmissions meets the configuration. requirements. For example, the configured number of retransmissions is not included.
实施例1Example 1
对应方式1，描述UE和基站的反馈CCA检测情况方法。图4是根据本发明实施例1的检测结果反馈示意图，如图4所示，在第n个上行子帧反馈检测结果。Corresponding to mode 1, the method of feedback CCA detection status of UE and base station is described. Figure 4 is a schematic diagram of detection result feedback according to Embodiment 1 of the present invention. As shown in Figure 4, the detection result is fed back in the nth uplink subframe.
当基站和UE约定反馈CCA检测情况，具体为，当CCA检测失败时进行对应的反馈。那么就使用现有LTE系统中的PUCCH格式1。现有的PUCCH格式1是用于发送调度请求(SR)的，基站仅仅通过能量检测的方式来判断是否有SR请求发送。When the base station and the UE agree to feedback the CCA detection status, specifically, corresponding feedback will be provided when the CCA detection fails. Then use the PUCCH format 1 in the existing LTE system. The existing PUCCH format 1 is used to send scheduling requests (SR), and the base station only determines whether there is an SR request to send through energy detection.
如果PUCCH格式1被用于发送CCA检测失败，那么约定当CCA检测失败时，UE发送对应的反馈信号，这里的反馈信号与SR请求相同，只是发送的码资源不同(包括发送的时频域资源等)。具体的根据UE专用RRC消息中获得发送PUCCH格式1的码资源。优选的，针对CCA检测情况下，SR请求的发送周期为1ms或2ms，这样便于UE存在可以使用的SR资源。If PUCCH format 1 is used to send CCA detection failure, it is agreed that when CCA detection fails, the UE sends a corresponding feedback signal. The feedback signal here is the same as the SR request, except that the code resources sent are different (including the time-frequency domain resources sent). wait). Specifically, code resources for sending PUCCH format 1 are obtained from the UE-specific RRC message. Preferably, in the case of CCA detection, the sending period of the SR request is 1 ms or 2 ms, so that there are SR resources available for the UE.
例如，为被调度在非授权载波中的UE，配置对应的SR请求周期为1ms，请并且通过专用RRC消息发送了对应的SR请求资源。那么当UE在子帧n中对应的CCA检测失败时，就使用SR请求资源发送CCA检测失败。当基站在子帧n授权载波对应的SR资源上检测到SR请求信号，则表明UE在子帧n的CCA检测失败。For example, for a UE scheduled in an unlicensed carrier, the corresponding SR request period is configured as 1ms, and the corresponding SR request resource is sent through a dedicated RRC message. Then when the UE fails to detect the corresponding CCA in subframe n, it uses the SR request resource to send the CCA detection failure. When the base station detects the SR request signal on the SR resource corresponding to the authorized carrier of subframe n, it indicates that the UE fails to detect CCA in subframe n.
显然，这种方式适合非授权载波不支持真实的SR请求的情况，或者不允许UE在非授权载波中发送SR请求的情况。如果非授权载波支持发送SR请求，那么就会导致实际的SR请求与CCA检测失败冲突。Obviously, this method is suitable for situations where the unlicensed carrier does not support real SR requests, or the UE is not allowed to send SR requests in the unlicensed carrier. If the unlicensed carrier supports sending SR requests, it will cause the actual SR request to conflict with the CCA detection failure.
为了避免后面这种情况。下面给出优化方案：In order to avoid the latter situation. The optimization plan is given below:
基站通过UE专用RRC消息中增加为CCA检测失败信息发送的资源配置信息，从而将实际的SR请求的资源配置信息与CCA检测失败信息的资源分别配置，这样即使SR请求和CCA检测失败信息在同一子帧中发送，也会由于码资源不同而容易被区分。The base station adds the resource configuration information sent for the CCA detection failure information through the UE-specific RRC message, thereby configuring the actual resource configuration information of the SR request and the resources of the CCA detection failure information separately, so that even if the SR request and the CCA detection failure information are in the same Sent in subframes, they are also easily distinguished due to different code resources.
并且，可以将CCA检测失败信息的资源的子帧周期配置为1ms或2ms。也就是SR请求的子帧周期与CCA检测失败信息的资源的子帧周期分别配置。Furthermore, the subframe period of the resource for CCA detection failure information can be configured as 1 ms or 2 ms. That is, the subframe period of the SR request and the subframe period of the resource for the CCA detection failure information are configured separately.
对应的UE反馈CCA检测成功的信息也可以适用。The corresponding UE feedback information of successful CCA detection may also be applicable.
实施例2Example 2
对应方式3，描述UE和基站的反馈CCA检测情况方法。Corresponding to mode 3, the method of feedback CCA detection status of UE and base station is described.
当基站和UE约定反馈CCA检测情况，具体为，当CCA检测失败时UE反馈1，CCA检测成功时UE反馈0。反之也可以。其中1或0采用PUCCH格式1a的编码以及发送方式。这种反馈可以与现有LTE系统中PUCCH格式1a对应，目前格式1a用于反馈UE是否正确接收到下行数据。When the base station and the UE agree to feedback the CCA detection status, specifically, the UE will feedback 1 when the CCA detection fails, and the UE will feedback 0 when the CCA detection is successful. Vice versa is also possible. Among them, 1 or 0 adopts the encoding and transmission method of PUCCH format 1a. This feedback can correspond to PUCCH format 1a in the existing LTE system. Currently, format 1a is used to feedback whether the UE correctly receives downlink data.
基站和UE约定，基站为非授权载波中调度的UE在对应的上行子帧n对应的授权载波的子帧n中配置有用于反馈CCA检测失败/成功信息的反馈资源。当UE根据基站的调度，在对应上行子帧发送数据之前执行CCA检测时，如果信道检测失败/成功，在UE在授权载波的对应子帧中发送CCA检测失败或成功的信息给基站。The base station and the UE agree that the base station configures feedback resources for feeding back CCA detection failure/success information in the subframe n of the licensed carrier corresponding to the corresponding uplink subframe n for the UE scheduled in the unlicensed carrier. When the UE performs CCA detection before sending data in the corresponding uplink subframe according to the base station's scheduling, if the channel detection fails/successes, the UE sends CCA detection failure or success information to the base station in the corresponding subframe of the authorized carrier.
CCA检测失败或成功信息的编码和资源确定按照LTE协议36.211vd00的5.4节进行。The encoding and resource determination of CCA detection failure or success information are carried out in accordance with Section 5.4 of LTE protocol 36.211vd00.
其中所述5.4节在进行资源确定的过程中需要一个参数该参数根据对应的调度信息(即发送上行授权信息的PDCCH)的CCE最小索引推算得出，具体的推算与现有LTE的协议保持一致。其中p∈[p0，p1]，p表示天线端口，包括端口0和1。/>映射到端口p为PUCCH格式1a。其中，/>nCCE表示对应的PDCCH中最小CCE索引，/>为高层信号配置。具体可以参考36.213vd00协议的10.1.2.1节。As mentioned in Section 5.4, a parameter is required during the resource determination process. This parameter is calculated based on the minimum CCE index of the corresponding scheduling information (that is, the PDCCH that sends the uplink authorization information). The specific calculation is consistent with the existing LTE protocol. Where p∈[p0 , p1 ], p represents the antenna port, including ports 0 and 1. /> Mapping to port p is PUCCH format 1a. Among them,/> nCCE represents the minimum CCE index in the corresponding PDCCH,/> Configure for high-level signals. For details, please refer to Section 10.1.2.1 of the 36.213vd00 protocol.
基站和UE根据上述约定的方式计算接收和发送的CCA失败/成功信息的资源。The base station and the UE calculate the resources for the received and sent CCA failure/success information according to the above agreed method.
为了避免与实际的ACK/NACK反馈冲突，基站需要配置实际的ACK/NACK的物理资源或码资源不同于CCA检测失败/成功的物理资源或码资源。具体可以通过配置各自的PDCCH发送时的CCE的最小索引值不同。In order to avoid conflict with the actual ACK/NACK feedback, the base station needs to configure the physical resources or code resources of the actual ACK/NACK to be different from the physical resources or code resources of the CCA detection failure/success. Specifically, the minimum index value of the CCE when sending respective PDCCHs can be configured to be different.
本实施例中，用于CCA检测结果发送的资源(包括时域、频域和码资源)，也可以是通过高层信令为UE分配的，例如使用UE专用的RRC消息发送。In this embodiment, the resources (including time domain, frequency domain and code resources) used for sending CCA detection results may also be allocated to the UE through higher layer signaling, for example, using UE-specific RRC messages to send.
实施例3Example 3
基于实施例1、2，当主载波或授权载波为TDD模式时，图5是根据本发明实施例3基于TDD模式的检测结果反馈示意图，如图5所示，在第n+1个上行子帧反馈检测结果。此时主载波中与非授权载波中子帧n(发送上行数据的子帧且发送之前执行CCA)对应子帧可能为下行，UE无法发送CCA检测结果，此时需要在主载波中顺延至之后第一个上行子帧才能发送CCA检测结果，此时有可能会造成错失反馈时机的问题。Based on Embodiments 1 and 2, when the main carrier or authorized carrier is in TDD mode, Figure 5 is a schematic diagram of detection result feedback based on TDD mode according to Embodiment 3 of the present invention. As shown in Figure 5, in the n+1th uplink subframe Feedback test results. At this time, the subframe corresponding to subframe n in the main carrier and the unlicensed carrier (the subframe for sending uplink data and performing CCA before sending) may be downlink, and the UE cannot send the CCA detection result. In this case, it needs to be postponed to later in the main carrier. CCA detection results can only be sent in the first uplink subframe, which may cause the problem of missing feedback opportunities.
如果顺延发生时，基站需要在所述之后第一个上行子帧中按照子帧n中的方式预留资源，UE仍然按照子帧n中分配的CCA检测结果上报的资源在所述之后第一个上行子帧中发送CCA检测结果。If a delay occurs, the base station needs to reserve resources in the first uplink subframe after the above in the manner in subframe n, and the UE still reports the resources according to the CCA detection result allocated in subframe n in the first after the above. CCA detection results are sent in uplink subframes.
如果顺延发生，优选的，基站和UE需要约定最大的顺延时间，超过最大顺延时间，则不再反馈。If a delay occurs, preferably, the base station and the UE need to agree on a maximum delay time. If the maximum delay time is exceeded, no feedback will be given.
如果顺延发生，优选的，基站和UE约定UE反馈CCA检测结果为多次的CCA检测反馈结果。基站和UE约定第一次的CCA检测结果沿用子帧n中相同的资源在所述之后第一个上行子帧中发送，第二次CCA检测结果，使用的资源为第一次CCA检测结果之后紧邻的资源，依次类推。If a delay occurs, preferably, the base station and the UE agree that the UE will feedback the CCA detection results multiple times. The base station and the UE agree that the first CCA detection result will be sent in the first uplink subframe using the same resources in subframe n. The second CCA detection result will use resources after the first CCA detection result. The immediately adjacent resources are in turn, and so on.
如果顺延发生，优选的，基站和UE预定反馈累计的CCA检测失败或成功的次数。If a delay occurs, preferably, the base station and the UE are scheduled to feedback the accumulated number of CCA detection failures or successes.
针对主载波是TDD模式的情况，基站最好在调度非授权载波的UE传输上行数据时，事先计算被调度的UE在非授权载波中发送上行数据的子帧恰好对应主载波的上行子帧。因为TDD模式的上下行子帧配置时固定，LAA载波与主载波子帧时对齐的，上行授权信息(调度UE的信息)的发送与上行数据的发送的间隔时固定的或可以配置的，所以基站容易确定发送上行授权信息的子帧，在间隔k个子帧后，对应的上行数据发送的子帧在主载波是否为上行子帧。When the main carrier is in TDD mode, it is best for the base station to calculate in advance that the subframe in which the scheduled UE sends uplink data in the unlicensed carrier exactly corresponds to the uplink subframe of the main carrier when scheduling the UE on the unlicensed carrier to transmit uplink data. Because the uplink and downlink subframe configurations in TDD mode are fixed, the LAA carrier and the main carrier subframe are aligned, and the interval between the sending of uplink authorization information (information for scheduling UEs) and the sending of uplink data is fixed or configurable, so The base station can easily determine the subframe in which uplink authorization information is sent. After an interval of k subframes, whether the corresponding subframe in which uplink data is sent is an uplink subframe on the main carrier.
实施例4Example 4
基站接收到UE反馈的CCA检测结果后，基站按照下面的方式处理，图6为根据本发明可选实施例的基站侧处理流程图，如图6，包括：After the base station receives the CCA detection result fed back by the UE, the base station processes it in the following manner. Figure 6 is a base station side processing flow chart according to an optional embodiment of the present invention, as shown in Figure 6, including:
S601,在子帧n-k通过主载波或LAA载波的PDCCH(或ePDCCH)发送针对LAA载波的上行授权信息给UE；S601. In subframe n-k, send the uplink authorization information for the LAA carrier to the UE through the PDCCH (or ePDCCH) of the main carrier or the LAA carrier;
S602,接收UE上报的CCA检测结果；S602: Receive the CCA detection results reported by the UE;
S603,根据上行授权信息接收UE可能发送的上行数据；S603: Receive uplink data that may be sent by the UE according to the uplink authorization information;
S604,根据CCA检测结果确定后续处理(包括，是否重传，接收到的数据是否有效，是否计入实际重传次数，是否与之前结构的数据合并)。S604: Determine subsequent processing based on the CCA detection results (including whether to retransmit, whether the received data is valid, whether to include the actual number of retransmissions, and whether to merge with the data of the previous structure).
LAA载波(非授权载波)与授权载波以载波聚合的方式运营，子帧是对齐的。LAA carriers (unlicensed carriers) and licensed carriers operate in a carrier aggregation manner, and the subframes are aligned.
基站在子帧n-k(k为正整数)中通过主载波(授权载波)或LAA载波的PDCCH(或增强的PDCCH，即ePDCCH，下同)发送上行授权信息调度UE在非授权载波的子帧n中进行上行数据发送。基站在非授权载波的子帧n中接收可能的上行数据，同时在主载波对应的子帧中接收UE上报的针对非授权载波的子帧n中发送上行数据之前的CCA检测结果。The base station sends uplink authorization information in subframe n-k (k is a positive integer) through the PDCCH of the main carrier (authorized carrier) or LAA carrier (or enhanced PDCCH, ePDCCH, the same below) to schedule the UE in subframe n of the unlicensed carrier. to send uplink data. The base station receives possible uplink data in subframe n of the unlicensed carrier, and at the same time receives the CCA detection results reported by the UE before sending uplink data in subframe n of the unlicensed carrier in the subframe corresponding to the main carrier.
当基站接收到所述UE上报针对非授权载波的子帧n中发送上行数据之前的CCA检测结果为失败时(CCA检测结果为信道非空闲)，则基站认为所述UE并未在子帧n中发送被调度的数据。基站可以将接收的上行数据丢弃。认为此次重传是无效的，不计为实际重传的次数中。基站也不将该次接收的上行数据与之前接收的上行数据进行HARQ合并。When the base station receives a report from the UE that the CCA detection result before sending uplink data in subframe n of an unlicensed carrier is a failure (the CCA detection result is that the channel is not idle), the base station considers that the UE is not in subframe n. Send scheduled data. The base station may discard the received uplink data. This retransmission is considered invalid and is not counted in the actual number of retransmissions. The base station also does not HARQ combine the uplink data received this time with the uplink data received previously.
当基站接收到UE上报的CCA检测结果为成功时(CCA检测结果为信道空闲)，基站认为UE按照上行授权信息发送了上行数据。认为接收到的上行数据为有效数据，将本次重传计入实际重传次数中。When the base station receives the CCA detection result reported by the UE as successful (the CCA detection result is that the channel is idle), the base station considers that the UE has sent uplink data according to the uplink authorization information. The received uplink data is considered to be valid data, and this retransmission is included in the actual number of retransmissions.
对于上述不同的CCA结果反馈方式，基站的处理情况不同，如果UE仅在CCA失败时发送CCA检测结果，那么基站接收到CCA检测结果，则认为UE不能按照上行授权信息发送上行数据。如果基站没有接收到CCA检测失败的信息(因为此时UECCA检测成功了，不发送CCA检测结果的，所以基站接收不到)，则基站认为UE按照上行授权信息发送了上行数据。For the above different CCA result feedback methods, the base station handles them differently. If the UE only sends CCA detection results when CCA fails, then the base station receives the CCA detection results and considers that the UE cannot send uplink data according to the uplink authorization information. If the base station does not receive the CCA detection failure information (because the UECCA detection is successful at this time and the CCA detection result is not sent, the base station cannot receive it), the base station considers that the UE has sent uplink data according to the uplink authorization information.
对于UE仅仅反馈CCA检测成功的结果，处理原理是类似的，这里不再赘述。For the UE to only feedback the result of successful CCA detection, the processing principle is similar and will not be described again here.
对于UE不仅反馈CCA检测失败的信息，还反馈CCA检测成功的信息的情况，基站直接根据接收到的反馈信息判断即可。For the situation where the UE not only feeds back information about CCA detection failure, but also feedback information about successful CCA detection, the base station can directly make a judgment based on the received feedback information.
实施例5Example 5
图7为根据本发明可选实施例的UE侧处理流程图，用于说明本发明中的UE行为，如图7：包括：Figure 7 is a UE side processing flow chart according to an optional embodiment of the present invention, used to illustrate the UE behavior in the present invention, as shown in Figure 7: including:
S701,在子帧n-k接收基站通过PDCCH(或ePDCCH)发送的针对LAA载波的上行授权信息；S701. Receive the uplink authorization information for the LAA carrier sent by the base station through the PDCCH (or ePDCCH) in subframe n-k;
S702,根据上行授权信息，在子帧n发送数据之前执行CCA检测；S702: According to the uplink authorization information, perform CCA detection before sending data in subframe n;
S703,上报CCA检测检测结果；S703, report the CCA test results;
S704,根据CCA检测结果确定是否继续根据PDCCH，在子帧n发送上行数据。S704: Determine whether to continue sending uplink data in subframe n based on the PDCCH based on the CCA detection result.
UE在主载波或LAA载波的子帧n-k中接收PDCCH(或ePDCCH)获取上行授权信息，并根据上行授权信息确定在LAA载波的子帧n中发送上行数据。The UE receives the PDCCH (or ePDCCH) in subframe n-k of the main carrier or LAA carrier to obtain uplink grant information, and determines to send uplink data in subframe n of the LAA carrier based on the uplink grant information.
UE在LAA载波的子帧n中发送上行数据之前，UE先执行CCA检测，如果信道为空闲，则UE根据上行授权信息发送对应的上行数据。UE同时发送CCA检测结果给基站(根据前述方式1、2、3不同，UE的发送CCA检测结果行为不同)。如果信道为非空闲，则UE放弃本次在子帧n中的上行数据发送。UE时发送CCA检测结果给基站(根据前述方式1、2、3不同，UE的发送CCA检测结果行为不同)。UE认为本次调度或重传是无效的，不计入实际的重传次数。Before the UE sends uplink data in subframe n of the LAA carrier, the UE first performs CCA detection. If the channel is idle, the UE sends corresponding uplink data according to the uplink authorization information. The UE simultaneously sends the CCA detection results to the base station (according to the aforementioned methods 1, 2, and 3, the behavior of the UE in sending CCA detection results is different). If the channel is not idle, the UE gives up this uplink data transmission in subframe n. The UE sends CCA detection results to the base station (according to the aforementioned methods 1, 2, and 3, the behavior of the UE in sending CCA detection results is different). The UE considers this scheduling or retransmission to be invalid and will not be counted in the actual number of retransmissions.
实施例6Example 6
随着UE同时聚合的LAA载波数量增加，例如典型值4个LAA载波，目前按照LTE协议的规定，最大支持32个载波聚合，如果其中LAA载波最多为31个，并且这些载波在相同的子帧位置被调度发送上行数据时，那么UE需要在每个载波分别执行CCA，那么如何同时反馈每个载波的CCA检测结果呢？本实施例给出方法。As the number of LAA carriers aggregated by the UE at the same time increases, for example, the typical value is 4 LAA carriers, currently according to the provisions of the LTE protocol, a maximum of 32 carrier aggregation is supported, if the maximum number of LAA carriers is 31, and these carriers are in the same subframe When the location is scheduled to send uplink data, the UE needs to perform CCA on each carrier separately. So how to feed back the CCA detection results of each carrier at the same time? This embodiment gives the method.
利用现有LTE系统中UCI的发送机制，包括不同的PUCCH格式(格式1b、2、2a、2b、3以及后续可能增加格式)以及通过PUSCH传输UCI(上行控制信息)的发送机制。具体是(多个载波在同一载波同一子帧的一个PUCCH资源中反馈)：Utilize the UCI transmission mechanism in the existing LTE system, including different PUCCH formats (formats 1b, 2, 2a, 2b, 3 and possible additional formats in the future) and the transmission mechanism for transmitting UCI (uplink control information) through PUSCH. Specifically (multiple carriers feed back in one PUCCH resource of the same carrier and the same subframe):
以PUCCH格式2b为例说明，假设基站为UE配置了21个LAA载波聚合，并且同时在每个载波同一子帧被调度发送上行数据。那么UE需要针对21个载波分别执行CCA检测，并上报CCA检测结果。此时，基站和UE约定采用某一PUCCH格式进行CCA检测结果的反馈，例如格式2b。基站在调度UE在子帧n中发送上行数据时，基站需要按照目前LTE系统中为PUCCH格式2b分配资源的方式配置对应的资源在主载波的子帧n中。然后UE针对21个载波执行CCA检测，每个LAA载波的检测结果按照约定的顺序(例如服务小区索引从小到大)排列对应的CCA检测结果(如果每个载波1个比特描述CCA检测是否成功)，形成待反馈比特。然后按照现有PUCCH格式2b的编码调制、序列选择、资源计算的方式来获取对应的反馈资源并进行发送。注意，此时使用的CCE索引值为本次上行调度的PDCCH的最小CCE索引。Taking PUCCH format 2b as an example, it is assumed that the base station configures 21 LAA carrier aggregation for the UE, and is scheduled to send uplink data in the same subframe of each carrier at the same time. Then the UE needs to perform CCA detection on each of the 21 carriers and report the CCA detection results. At this time, the base station and the UE agree to use a certain PUCCH format to feedback the CCA detection results, such as format 2b. When the base station schedules the UE to send uplink data in subframe n, the base station needs to configure the corresponding resources in subframe n of the main carrier in accordance with the way in which resources are allocated for PUCCH format 2b in the current LTE system. Then the UE performs CCA detection on 21 carriers, and the detection results of each LAA carrier are arranged in the agreed order (for example, the serving cell index is from small to large) and the corresponding CCA detection results are arranged (if 1 bit for each carrier describes whether the CCA detection is successful) , forming the bits to be fed back. Then, the corresponding feedback resources are obtained and sent according to the coding modulation, sequence selection, and resource calculation methods of the existing PUCCH format 2b. Note that the CCE index value used at this time is the minimum CCE index of the PDCCH scheduled for this uplink.
基站也是根据所述CCE索引推算本次的CCA检测结果上报使用的资源，然后进行解码等处理，此时基站将格式2b的比特都按照事先约定CCA检测结果进行解析。The base station also calculates the resources used for reporting this CCA detection result based on the CCE index, and then performs decoding and other processing. At this time, the base station analyzes the bits of format 2b according to the pre-agreed CCA detection results.
对于多个载波在同一载波同一子帧的不同的资源中反馈CCA检测结果的情况，上述方式1、2、3能被沿用，且与现有的多个载波在同一载波的不同资源中反馈ACK/NACK的资源确定方式相同(36.213vd00的10.1.2.2节)。For the situation where multiple carriers feed back CCA detection results in different resources of the same subframe of the same carrier, the above methods 1, 2, and 3 can be used, and are different from the existing multiple carriers that feed back ACK in different resources of the same carrier. The resource determination method for /NACK is the same (Section 10.1.2.2 of 36.213vd00).
实施例7Example 7
对于利用现有的PUSCH的方式传输UCI的方式承载CCA检测结果。具体为：The existing PUSCH method is used to transmit UCI to carry CCA detection results. Specifically:
基站和UE约定，当子帧n-k发送PDCCH调度UE在多个非授权载波的子帧n中发送上行数据时，UE在发送数据之前需要先执行CCA检测，那么CCA检测的结果需要上报给基站，优选在授权载波子帧n中上报。The base station and the UE agree that when subframe n-k sends PDCCH and schedules the UE to send uplink data in subframe n of multiple unlicensed carriers, the UE needs to perform CCA detection before sending data, and then the CCA detection results need to be reported to the base station. It is preferably reported in subframe n of the authorized carrier.
基站和UE约定，子帧n的上报CCA检测结果的资源通过现有的PUSCH发送UCI的方式来确定(即使用现有的PUSCH发送UCI时的资源分配方式(见36.212vd00的5.2.4节)，为CCA检测结果反馈分配资源)。此时确定资源的过程使用子帧n-k中的PDCCH的CCE来确定(具体CCE的选择和用法同现有协议)。基站在按照上述规则约定的资源上接收UE反馈的CCA检测结果，并将其中的比特按照CCA检测结果进行解析。The base station and the UE agree that the resources for reporting CCA detection results in subframe n are determined by the existing PUSCH method of transmitting UCI (that is, using the existing resource allocation method when PUSCH transmits UCI (see Section 5.2.4 of 36.212vd00) , allocate resources for CCA test result feedback). At this time, the process of determining resources is determined by using the CCE of the PDCCH in subframe n-k (the specific selection and usage of CCE are the same as the existing protocols). The base station receives the CCA detection results fed back by the UE on the resources agreed according to the above rules, and parses the bits in them according to the CCA detection results.
本申请主要是利用现有的PUCCH或PUSCH为UCI发送的机制，重新定义其中的比特含义为CCA检测结果，从而传输CCA检测结果信息给基站，其余的资源分配、编码、发送等沿用现有机制。上述多个实施例中，在确定CCA检测结果反馈的资源时，都是使用本次上行调度的上行授权信息的PDCCH的CCE和高层信令通知的参数结合确定的，确定方式与现有协议相同。This application mainly uses the existing PUCCH or PUSCH transmission mechanism for UCI, and redefines the meaning of the bits as CCA detection results, thereby transmitting CCA detection result information to the base station. The remaining resource allocation, coding, transmission, etc. follow the existing mechanism. . In the above-mentioned embodiments, when determining the resources for CCA detection result feedback, the CCE of the PDCCH of the uplink grant information of this uplink scheduling is combined with the parameters notified by the higher layer signaling. The determination method is the same as the existing protocol. .
实施例1至实施例7，也可以说成是使用现有的PUCCH格式(或传输UCI的PUSCH)传输一个新的信息，即UE的CCA检测结果。可以与现有的PUCCH格式(PUSCH中的UCI)中的信息混合传输(混合传输时，需要事先预定传输的信息中那些比特为CCA检测的结果)，也可以单独分配独立的PUCCH资源进行传输。优选后者。Embodiment 1 to Embodiment 7 can also be said to use the existing PUCCH format (or PUSCH for transmitting UCI) to transmit a new information, that is, the CCA detection result of the UE. It can be mixed with the information in the existing PUCCH format (UCI in PUSCH) for transmission (in mixed transmission, those bits in the transmitted information need to be pre-scheduled to be the result of CCA detection), or independent PUCCH resources can be allocated separately for transmission. The latter is preferred.
实施例8Example 8
本实施例要解决的问题不同于前7个实施例，但是原来同上述实施例。本实施例提供一种半静态调度下的UE是否发送了数据的反馈信息。The problem to be solved by this embodiment is different from the previous seven embodiments, but it is the same as the above-mentioned embodiments. This embodiment provides feedback information on whether the UE has sent data under semi-static scheduling.
本实施例8解决的问题：在LTE系统中，目前存在半静态调度(SPS，Semi-Persistent Scheduling)，例如，基站发送一次上行授权信息后，该上行授权信息较长时间内一直有效(基站未发送终止信息之前)，UE按照该上行授权信息在对应的子帧中发送上行数据，但是，UE有时在对应的上行子帧到来时，UE恰好没有数据需要发送，此时，LTE的做法的，UE发送一些填充的数据(无效数据)，以保证半静态调度的持续性，如果UE不发送数据，有可能被终止半静态调度。但是这种做法不利于UE省电，且对于邻小区带来干扰。如果进一步将半静态调度的发送间隔缩小，那么问题将更加严重。另外，对于增强后的动态调度也是可能存在类似问题，例如动态调度下，UE采用从资源池中竞争到资源来发送上行数据时，也存在UE竞争到了资源但是没有数据发送的情况。所以本申请的方案也可以解决动态调度时没有数据发送的指示。The problem solved by this embodiment 8: In the LTE system, there is currently Semi-Persistent Scheduling (SPS). For example, after the base station sends the uplink authorization information once, the uplink authorization information will remain valid for a long time (the base station has not Before sending the termination information), the UE sends uplink data in the corresponding subframe according to the uplink authorization information. However, sometimes the UE happens to have no data to send when the corresponding uplink subframe arrives. At this time, the LTE approach is, The UE sends some padding data (invalid data) to ensure the continuity of semi-static scheduling. If the UE does not send data, semi-static scheduling may be terminated. However, this approach is not conducive to power saving of the UE and causes interference to neighboring cells. If the transmission interval of semi-static scheduling is further reduced, the problem will be more serious. In addition, there may be similar problems with enhanced dynamic scheduling. For example, under dynamic scheduling, when the UE competes for resources from the resource pool to send uplink data, there may also be situations where the UE competes for resources but does not send data. Therefore, the solution of this application can also solve the problem of no indication of data transmission during dynamic scheduling.
为了克服上述问题，本申请提供一种UE上报信息，该信息用于描述，UE此时没有需要发送的数据(后续还是需要继续发送的)。基站接收到该信息后，也不会终止UE的半静态调度。In order to overcome the above problems, this application provides a kind of UE reporting information, which is used to describe that the UE has no data that needs to be sent at this time (it still needs to continue to send it later). After receiving this information, the base station will not terminate the semi-static scheduling of the UE.
本实施例具体的实施方式为：The specific implementation manner of this embodiment is:
当UE处于半静态调度时(上行授权信息之前已经接收到了，且较长时间段内有效)，在对应的发送子帧(或时机)时，UE没有需要发送的上行数据时，UE给基站反馈上报信息1。其中信息1，描述此时UE没有对应的上行数据发送。如果UE在对应的子帧时，UE有数据发送时，也可以发送UE发送了数据的指示信息(原理与发送信息1相同，下面以信息1为例)。When the UE is in semi-static scheduling (the uplink authorization information has been received before and is valid for a long period of time), when the UE has no uplink data to send in the corresponding sending subframe (or timing), the UE will feedback to the base station Report information 1. Information 1 describes that the UE has no corresponding uplink data to send at this time. If the UE is in the corresponding subframe and the UE has data to send, it can also send indication information indicating that the UE has sent data (the principle is the same as sending information 1, and information 1 is taken as an example below).
基站和UE约定在发送被半静态的数据对应的载波(或，基站和UE约定在发送半静态的数据对应的载波配对的主载波)中对应的子帧(即被调度发送半静态数据的子帧，但没有数据发送的子帧)中为UE配置反馈上述信息1的资源，包括时域、频域或码资源。通过上述资源区分该信息1与其他信息的不同。具体的资源配置方式，可以采用现有LTE中传输UE的PUCCH格式的资源分配方式(也包括传输UCI的PUSCH资源分配方式)，包括分配时域、频域或码子资源等。并且采用与现有LTE中传输UE的PUCCH格式相同的编码方式、映射方式(也包括通过PUSCH传输UCI的编码方式和映射方式)。The base station and the UE agree to send the corresponding subframe in the carrier corresponding to the semi-static data (or the base station and the UE agree to send the main carrier of the carrier pair corresponding to the semi-static data) (that is, the subframe scheduled to send the semi-static data). frame, but no subframe for data transmission), the UE is configured with resources to feed back the above information 1, including time domain, frequency domain or code resources. Distinguish the difference between this information 1 and other information through the above resources. The specific resource configuration method can adopt the existing resource allocation method of PUCCH format for transmitting UE in LTE (also including the PUSCH resource allocation method for transmitting UCI), including allocating time domain, frequency domain or code sub-resources, etc. And the same encoding method and mapping method are used as the PUCCH format for transmitting UE in existing LTE (also including the encoding method and mapping method for transmitting UCI through PUSCH).
优选的，信息1包括1比特信息，优选采用与PUCCH格式1a的方式来承载，包括分配时频域、码域资源，此时基站和UE约定分配用于传输信息1的资源，然后将信息1按照格式1a的编码、映射、加扰方式进行处理，然后再信息1分配的资源上进行传输(这样不需要重新设计信息1的编码、映射、加扰方式)。Preferably, information 1 includes 1 bit of information, and is preferably carried in the same manner as PUCCH format 1a, including allocating time-frequency domain and code domain resources. At this time, the base station and the UE agree to allocate resources for transmitting information 1, and then transmit information 1 It is processed according to the encoding, mapping, and scrambling methods of format 1a, and then transmitted on the resources allocated for information 1 (so there is no need to redesign the encoding, mapping, and scrambling methods of information 1).
本实施例中，也可以说成是使用现有的PUCCH格式(或传输UCI的PUSCH)传输一个新的信息，即信息1。可以与现有的PUCCH格式(PUSCH中的UCI)中的信息混合传输(混合传输时，需要事先约定传输的信息中那些比特为信息1)，也可以分配独立的PUCCH资源(PUSCH资源，包括时域、频域、码子资源，其中一种不同都可以认为资源不同与现有的)进行传输。优选后者。In this embodiment, it can also be said that the existing PUCCH format (or PUSCH for transmitting UCI) is used to transmit a new information, that is, information 1. It can be mixed with the information in the existing PUCCH format (UCI in PUSCH) for mixed transmission (in mixed transmission, it is necessary to agree in advance which bits in the transmitted information are information 1), or independent PUCCH resources (PUSCH resources, including time) can be allocated. Domain, frequency domain, code sub-resources, any of which are different can be considered as resources different from existing ones) for transmission. The latter is preferred.
实施例9Example 9
对于上行发送数据的资源通过UE从基站事先分配的资源池中抢占而来的，本申请提供下面的方式以减少基站侧的盲检。例如，资源池中包括n个资源块，UE需要从n个中竞争一个或多个来发送上行数据，此时基站需要盲检来发现UE使用了那个资源块发送了上行数据，显然，比较复杂。For uplink data transmission resources that are preempted by the UE from the resource pool allocated in advance by the base station, this application provides the following method to reduce blind detection on the base station side. For example, the resource pool includes n resource blocks, and the UE needs to compete for one or more of the n to send uplink data. At this time, the base station needs blind detection to discover which resource block the UE used to send uplink data. Obviously, it is more complicated. .
本实施例中提供下面的方式：This embodiment provides the following methods:
UE在从资源池中竞争到用于上行数据发送的资源后，发送上行数据，同时，UE发送使用的资源索引给基站。资源索引通过PUCCH方式发送给基站，或通过PUSCH中发送UCI的方式发送给基站。具体的传输资源索引的方式与前述的信息1或CCA检测结果的方式是相同。此时也可以在本载波的传输。After competing for resources for uplink data transmission from the resource pool, the UE sends uplink data. At the same time, the UE sends the used resource index to the base station. The resource index is sent to the base station through PUCCH, or UCI is sent through PUSCH. The specific method of transmitting the resource index is the same as the aforementioned information 1 or CCA detection result. At this time, transmission on this carrier is also possible.
考虑到资源索引可以超过2个比特，所以优先考虑使用PUSCH中传输UCI的方式。Considering that the resource index can exceed 2 bits, the method of transmitting UCI in PUSCH is preferred.
即基站为发送资源索引而分配一份资源(包括时域、频域、码域)，分配方式与为传输UCI的方式相同。只是此时基站和UE约定该资源用于传输资源索引。然后UE采用与现有UCI相同的编码、调制、加扰、映射发送进行发送。也就是借助UCI的传输方式来传输资源索引，此时基站和UE约定该资源上的信息为资源索引即可。That is, the base station allocates a resource (including time domain, frequency domain, code domain) for sending the resource index, and the allocation method is the same as for transmitting UCI. Only at this time, the base station and the UE agree that the resource is used to transmit the resource index. Then the UE uses the same coding, modulation, scrambling, and mapping transmission as the existing UCI to transmit. That is, the resource index is transmitted using the UCI transmission method. At this time, the base station and the UE agree that the information on the resource is the resource index.
基站的行为：基站接收到UE发送的资源索引信息，并根据资源索引在截取对应的资源中的数据进行解码。Behavior of the base station: The base station receives the resource index information sent by the UE, and intercepts and decodes the data in the corresponding resource based on the resource index.
UE在抢占到的资源中发送上行数据，并在分配的资源中发送资源索引给基站。The UE sends uplink data in the preempted resources and sends the resource index in the allocated resources to the base station.
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述模块分别位于多个处理器中。It should be noted that each of the above modules can be implemented through software or hardware. For the latter, it can be implemented in the following ways, but is not limited to this: the above modules are all located in the same processor; or the above modules are located on multiple processors. in the processor.
本发明的实施例还提供了一种存储介质。可选地，在本实施例中，上述存储介质可以被设置为存储用于执行以下步骤的程序代码：An embodiment of the present invention also provides a storage medium. Optionally, in this embodiment, the above-mentioned storage medium may be configured to store program codes for performing the following steps:
S1，在用户设备UE被调度在非授权载波第n个子帧中发送上行数据时，在发送上行数据之前，执行空闲信道评估CCA检测，其中，n为自然数；S1, when the user equipment UE is scheduled to send uplink data in the nth subframe of the unlicensed carrier, before sending the uplink data, perform idle channel assessment CCA detection, where n is a natural number;
S2，将CCA检测的检测结果反馈给基站。S2: Feed back the detection results of CCA detection to the base station.
可选地，在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。Optionally, in this embodiment, the above-mentioned storage medium may include but is not limited to: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic Various media that can store program code, such as discs or optical disks.
可选地，在本实施例中，处理器根据存储介质中已存储的程序代码执行在用户设备UE被调度在非授权载波第n个子帧中发送上行数据时，在发送上行数据之前，执行空闲信道评估CCA检测，其中，n为自然数；Optionally, in this embodiment, the processor performs idle operation before sending the uplink data when the user equipment UE is scheduled to send uplink data in the nth subframe of the unlicensed carrier according to the program code stored in the storage medium. Channel assessment CCA detection, where n is a natural number;
可选地，在本实施例中，处理器根据存储介质中已存储的程序代码执行将CCA检测的检测结果反馈给基站。Optionally, in this embodiment, the processor executes and feeds back the detection results of the CCA detection to the base station according to the program code stored in the storage medium.
可选地，本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。Optionally, for specific examples in this embodiment, reference can be made to the examples described in the above-mentioned embodiments and optional implementations, and details will not be described again in this embodiment.
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。Obviously, those skilled in the art should understand that the above-mentioned modules or steps of the present invention can be implemented using general-purpose computing devices. They can be concentrated on a single computing device, or distributed across a network composed of multiple computing devices. , optionally, they may be implemented in program code executable by a computing device, such that they may be stored in a storage device for execution by the computing device, and in some cases, may be in a sequence different from that herein. The steps shown or described are performed either individually as individual integrated circuit modules, or as multiple modules or steps among them as a single integrated circuit module. As such, the invention is not limited to any specific combination of hardware and software.
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 descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610202559.1ACN107295677B (en) | 2016-03-31 | 2016-03-31 | Feedback method and device for performing idle channel assessment |
| PCT/CN2017/076511WO2017167004A1 (en) | 2016-03-31 | 2017-03-13 | Feedback method for performing clear channel assessment, device, and computer storage medium |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610202559.1ACN107295677B (en) | 2016-03-31 | 2016-03-31 | Feedback method and device for performing idle channel assessment |
| Publication Number | Publication Date |
|---|---|
| CN107295677A CN107295677A (en) | 2017-10-24 |
| CN107295677Btrue CN107295677B (en) | 2023-10-17 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610202559.1AActiveCN107295677B (en) | 2016-03-31 | 2016-03-31 | Feedback method and device for performing idle channel assessment |
| Country | Link |
|---|---|
| CN (1) | CN107295677B (en) |
| WO (1) | WO2017167004A1 (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110034871B (en)* | 2018-01-11 | 2020-07-31 | 上海朗帛通信技术有限公司 | Method and device used in user equipment and base station for wireless communication |
| CN110891314B (en) | 2018-09-11 | 2022-08-19 | 华为技术有限公司 | Communication method, resource allocation method and device |
| CN110932820B (en)* | 2018-09-19 | 2022-01-14 | 华为技术有限公司 | Method for transmitting and receiving uplink control information and communication device |
| CN111565093B (en)* | 2019-02-14 | 2022-08-26 | 华为技术有限公司 | Information transmission method, terminal equipment and network equipment |
| CN111770575B (en) | 2019-04-02 | 2023-05-26 | 上海朗帛通信技术有限公司 | Method and apparatus in a node for wireless communication |
| CN111246579B (en)* | 2020-01-10 | 2023-04-14 | 展讯通信（上海）有限公司 | Uplink authorization information transmission method and device |
| CN111885735B (en)* | 2020-06-30 | 2023-10-31 | 广东小天才科技有限公司 | Uplink scheduling indication method, terminal equipment and network equipment |
| CN114828087A (en)* | 2021-01-18 | 2022-07-29 | 大唐移动通信设备有限公司 | Data transmission method, terminal, network side equipment and computer readable storage medium |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102244568A (en)* | 2011-06-24 | 2011-11-16 | 华南理工大学 | Wireless network congestion control method with attached-type cross-layer design |
| CN103493416A (en)* | 2011-03-03 | 2014-01-01 | Lg电子株式会社 | Method and apparatus for transmitting ack/nack information in wireless communication system |
| CN104540230A (en)* | 2015-01-30 | 2015-04-22 | 深圳酷派技术有限公司 | Uplink scheduling method and uplink scheduling device |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2723009B1 (en)* | 2011-06-15 | 2020-02-19 | LG Electronics Inc. | Method for receiving downlink control information in wireless access system and terminal therefor |
| CN102291187B (en)* | 2011-07-15 | 2013-09-25 | 大唐移动通信设备有限公司 | Method and equipment for detecting PUCCH (physical uplink control channel) |
| US9713035B2 (en)* | 2013-05-20 | 2017-07-18 | Qualcomm Incorporated | Beacon transmission over unlicensed spectrum |
| US9949275B2 (en)* | 2013-10-01 | 2018-04-17 | Qualcomm Incorporated | Physical uplink control management in LTE/LTE-A systems with unlicensed spectrum |
| CN104486013B (en)* | 2014-12-19 | 2017-01-04 | 宇龙计算机通信科技(深圳)有限公司 | Channel detection method, Channel Detection system, terminal and base station |
| CN105072690B (en)* | 2015-09-06 | 2018-08-28 | 魅族科技（中国）有限公司 | Data transmission method based on unlicensed spectrum and device |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103493416A (en)* | 2011-03-03 | 2014-01-01 | Lg电子株式会社 | Method and apparatus for transmitting ack/nack information in wireless communication system |
| CN102244568A (en)* | 2011-06-24 | 2011-11-16 | 华南理工大学 | Wireless network congestion control method with attached-type cross-layer design |
| CN104540230A (en)* | 2015-01-30 | 2015-04-22 | 深圳酷派技术有限公司 | Uplink scheduling method and uplink scheduling device |
| Title |
|---|
| On the LAA uplink: scheduling, LBT, and HARQ;Intel Corporation;《3GPP TSG RAN WG1 Meeting #80 R1-150507》;20150213;全文* |
| Publication number | Publication date |
|---|---|
| WO2017167004A1 (en) | 2017-10-05 |
| CN107295677A (en) | 2017-10-24 |
| Publication | Publication Date | Title |
|---|---|---|
| US12388579B2 (en) | Method and apparatus for transmitting and receiving a feedback signal in a wireless communication system | |
| CN107295677B (en) | Feedback method and device for performing idle channel assessment | |
| US20220116151A1 (en) | Method and device for transmitting data | |
| CN112042141B (en) | HARQ codebook for radio access network | |
| US11252604B2 (en) | Data transmission method, apparatus, and system | |
| US20200154404A1 (en) | Communication device, system and method for communication using feedback | |
| JP6120112B2 (en) | Feedback information processing method, base station, and user equipment | |
| JP5453492B2 (en) | Method, apparatus, and computer-readable recording medium for receiving acknowledgment information of semi-persistent scheduling data packet | |
| EP3526920B1 (en) | Base stations, user equipments and a system for wireless communication, as well as the corresponding methods | |
| JP6200434B2 (en) | Device for sending and receiving feedback information | |
| CN106452661B (en) | Response information transmission method and device, base station and terminal | |
| CN101958777B (en) | Processing method and device for sending correct/error response messages | |
| JP2019510441A (en) | Reducing latency on physical channels in LTE networks | |
| WO2018126948A1 (en) | Data transmission method, device, terminal, base station and storage medium | |
| CN110352574B (en) | Improved acknowledgement signalling | |
| JP2018515004A (en) | Method, user equipment, and base station for transmitting control information | |
| US10986619B2 (en) | Method and apparatus for determining uplink transmission timing in wireless communication system | |
| CN108737036B (en) | Feedback information receiving method, sending method, device and system | |
| CN110366833B (en) | Retransmission timing for acknowledgment signaling | |
| WO2018121643A1 (en) | Data transmission method, apparatus and system | |
| CN108512633A (en) | A kind of data transmission method and device | |
| WO2012106975A1 (en) | Method for transmitting acknowledgement/negative acknowledgement and terminal for implementing the same | |
| JP2019146258A (en) | Method, user apparatus, and base station for sending control information | |
| CN118435545A (en) | Techniques for enhanced side link feedback transmission |
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TG01 | Patent term adjustment | ||
| TG01 | Patent term adjustment |