技术领域technical field
本发明涉及通信技术领域，尤其涉及一种D2D通信中的资源协商方法及设备。The present invention relates to the field of communication technologies, and in particular to a resource negotiation method and device in D2D communication.
背景技术Background technique
物联网是指，通过部署具有一定感知、计算、执行和通信能力的各种设备，获取物理世界的信息，并通过网络实现信息传输、协同和处理，从而实现人与物、物与物的互联的网络。简而言之，物联网就是要实现人与物、物与物的互联互通。物联网的应用包括智能电网、智能农业、智能交通以及环境检测等各个方面。D2D(Device-to-Device，设备对设备)通信，作为物联网应用的一种，主要是实现两个设备之间的直接通信。D2D通信涉及的技术包括：WPAN(Wireless Personal Area NetworkCommunication Technologies，无线个人局域网通信技术)、UWB(UltraWideband，超宽带)、蓝牙(Bluetooth)、Wifi(无线宽带)等短距无线通信技术。The Internet of Things refers to the acquisition of information in the physical world by deploying various devices with certain perception, calculation, execution and communication capabilities, and realizes information transmission, collaboration and processing through the network, thereby realizing the interconnection between people and things, and things and things. network of. In short, the Internet of Things is to realize the interconnection between people and things, things and things. The application of the Internet of Things includes various aspects such as smart grid, smart agriculture, smart transportation, and environmental detection. D2D (Device-to-Device, device-to-device) communication, as a kind of Internet of Things application, mainly realizes direct communication between two devices. The technologies involved in D2D communication include: WPAN (Wireless Personal Area Network Communication Technologies, wireless personal area network communication technology), UWB (UltraWideband, ultra-wideband), Bluetooth (Bluetooth), Wifi (wireless broadband) and other short-range wireless communication technologies.
为加强移动运营商在物联网领域的控制权，已经有相关公司开展了在运营商的授权频段支持D2D应用的研究，并积极推动在知名标准组织3GPP立项，目的是使用运营商的授权频段来支持和实现D2D应用。在运营商授权频段实现D2D通信，首要解决的问题就是，在不影响现有蜂窝通信的情况下，如何进行设备发现、资源协商和资源分配。现有UWB系统提供一种设备发现的方法，因为UWB是一种完全分布式系统，所以UWB设备之间通过定期在超帧中发送信标帧来实现设备发现和资源协商。其中，一个UWB超帧，长度为65536μs，由256个MAS(Medium Access Slot，媒介接入时隙)组成，每个MAS长度为256μs。每个UWB超帧的开头都是一个BP(信标周期，beacon period)，每个信标周期可以包括若干个信标时隙(beacon slot)，信标时隙的长度可以为85μs，而BP的最大长度可以为96个信标时隙。In order to strengthen the control of mobile operators in the field of Internet of Things, relevant companies have carried out research on supporting D2D applications in the operator's authorized frequency band, and actively promoted the establishment of projects in the well-known standards organization 3GPP, with the purpose of using the operator's authorized frequency band to Support and implement D2D applications. To realize D2D communication in the frequency band authorized by the operator, the first problem to be solved is how to perform device discovery, resource negotiation and resource allocation without affecting the existing cellular communication. The existing UWB system provides a device discovery method, because UWB is a completely distributed system, so UWB devices periodically send beacon frames in superframes to realize device discovery and resource negotiation. Among them, a UWB superframe, with a length of 65536 μs, is composed of 256 MAS (Medium Access Slot, medium access slot), and each MAS has a length of 256 μs. The beginning of each UWB superframe is a BP (beacon period, beacon period), each beacon period can include several beacon slots (beacon slot), the length of the beacon slot can be 85μs, and BP The maximum length can be 96 beacon slots.
基于上述设备发现方法，现有技术中的资源分配方式包括：一种是预留资源的方式，就是为之预留资源的设备在预留资源内可以发送信息；另外一种就是竞争方式，即是在BP和上述预留资源外，采用竞争方式发送信息。Based on the above-mentioned device discovery method, resource allocation methods in the prior art include: one is the method of reserving resources, that is, the device for which resources are reserved can send information within the reserved resources; the other is the method of competition, that is, In addition to the BP and the above-mentioned reserved resources, the information is sent in a competitive manner.
因为设备在进行发现时，没有考虑发送信标帧的可用资源问题，在现有的蜂窝通信的资源上任意发送信标帧，这就会对已有的蜂窝通信造成干扰，即便设备能够实现发现，但是也无法得知相互之间的资源预留情况，这就会导致设备在发现之后进行竞争资源占用，或者进行复杂的预留资源协商过程，直接应用到蜂窝通信环境中时效率较低；进一步的，如果信标帧中包含直接关于某个MAS的预留信息，那么，就有可能存在资源预留冲突，而需要进行复杂的冲突处理过程，也会导致设备之间资源协商的效率相对较低。Because the device does not consider the available resources for sending beacon frames when performing discovery, and sends beacon frames arbitrarily on existing cellular communication resources, which will cause interference to existing cellular communications, even if the device can achieve discovery , but it is also impossible to know the resource reservation between each other, which will cause the devices to compete for resource occupancy after discovery, or perform a complicated negotiation process for reserved resources, and the efficiency is low when directly applied to the cellular communication environment; Furthermore, if the beacon frame contains reservation information directly related to a certain MAS, then there may be resource reservation conflicts, and a complicated conflict handling process is required, which will also lead to relatively inefficient resource negotiation between devices. lower.
发明内容Contents of the invention
本发明实施例提供一种D2D通信中的资源协商方法及设备，以通过对资源协商过程的改进，提升D2D通信中设备之间资源协商的效率。Embodiments of the present invention provide a method and device for resource negotiation in D2D communication, so as to improve the efficiency of resource negotiation between devices in D2D communication by improving the resource negotiation process.
为解决上述技术问题，本发明实施例提供了一种D2D通信中的资源协商方法，该方法包括：In order to solve the above technical problems, an embodiment of the present invention provides a resource negotiation method in D2D communication, the method includes:
所述当前设备接收其他设备在当前超帧发送的资源需求信息，所述资源需求信息包括所述其他设备的业务优先级、所述其他设备信标所在的信标时隙和/或所述其他设备申请资源的数量；The current device receives resource requirement information sent by other devices in the current superframe, where the resource requirement information includes the service priority of the other device, the beacon slot where the other device beacons are located and/or the other The number of resources requested by the device;
所述当前设备依据所述其他设备的业务优先级、所述其他设备信标所在的信标时隙和/或所述其他设备申请资源的数量，计算所述当前设备能够分配到的资源位置。The current device calculates the resource position that the current device can allocate according to the service priority of the other device, the beacon slot where the beacon of the other device is located, and/or the quantity of resources applied by the other device.
本发明实施例还提供了一种D2D通信中的设备，该设备包括：The embodiment of the present invention also provides a device in D2D communication, the device includes:
第一接收模块，用于接收其他设备在当前超帧发送的资源需求信息，所述资源需求信息包括所述其他设备的业务优先级、所述其他设备信标所在的信标时隙和/或所述其他设备申请资源的数量；The first receiving module is configured to receive resource requirement information sent by other devices in the current superframe, where the resource requirement information includes the service priority of the other device, the beacon slot where the other device's beacon is located and/or The number of resources requested by the other devices;
计算模块，用于依据所述其他设备的业务优先级、所述其他设备信标所在的信标时隙和/或所述其他设备申请资源的数量，计算所述设备能够分配到的资源位置。A calculation module, configured to calculate resource positions that can be allocated to the device according to the service priority of the other device, the beacon time slot where the other device beacons are located, and/or the number of resources applied for by the other device.
本发明实施例具有以下优点：Embodiments of the present invention have the following advantages:
本发明实施例进行设备之间进行资源协商时，通过设备的业务优先级、信标所在的信标时隙和/或设备申请资源的数量等资源需求信息，可以计算出每个设备自身能够分配到的资源位置，这样每个设备都在自己能够分配到的资源位置上发送信息，就使得资源协商效率都得到提升，进而也能够提高发送信息的效率。When performing resource negotiation between devices in the embodiment of the present invention, it can be calculated that each device itself can allocate In this way, each device sends information at the resource location that it can allocate, so that the efficiency of resource negotiation is improved, and the efficiency of sending information can also be improved.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.
图1是本发明的设备发现方法实施例1的流程图；FIG. 1 is a flowchart of Embodiment 1 of the device discovery method of the present invention;
图2是本发明的设备发现方法实施例2的流程图；FIG. 2 is a flowchart of Embodiment 2 of the device discovery method of the present invention;
图3是本发明的资源协商方法实施例的流程图；Fig. 3 is a flowchart of an embodiment of the resource negotiation method of the present invention;
图4是图3所示的流程图中步骤301的流程图；Fig. 4 is the flowchart of step 301 in the flowchart shown in Fig. 3;
图5是本发明的信息发送方法实施例的流程图；Fig. 5 is a flowchart of an embodiment of the information sending method of the present invention;
图6是本发明的一种设备实施例1的结构示意图；Fig. 6 is a schematic structural view of a device embodiment 1 of the present invention;
图7是的图6所示的实施例中发现模块602的结构示意图；FIG. 7 is a schematic structural diagram of the discovery module 602 in the embodiment shown in FIG. 6;
图8是本发明的一种设备实施例2的结构示意图；Fig. 8 is a schematic structural view of a device embodiment 2 of the present invention;
图9是本发明的另一种设备实施例的结构示意图；Fig. 9 is a schematic structural diagram of another device embodiment of the present invention;
图10是图9所示的设备实施例中计算模块902的结构示意图；FIG. 10 is a schematic structural diagram of the computing module 902 in the device embodiment shown in FIG. 9;
图11是本发明的又一种设备实施例的结构示意图。Fig. 11 is a schematic structural diagram of another device embodiment of the present invention.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
在本发明实施例中，与现有技术不同的是本发明实施例中的设备，首先从蜂窝通信的基站或者别的设备获取信标帧可用资源的操作，以及本发明实施例中使用的信标帧包括的内容，本发明实施例中的信标帧除了包括信标发送设备标识、信标接收设备标识和信标时隙编号之外，还包括如下字段中的一种或几种：信标帧类型标识、主从通信设备标识、信标帧可用资源位置、业务类型、通信对端设备标识、所申请资源数量和信息发送的位置。其中，信标帧中包括哪些字段可以根据参与D2D通信的设备是进行互相发现、进行资源协商还是进行信息发送而有所不同。D2D通信的设备通过运营商的授权频段进行通信。In the embodiment of the present invention, the difference from the prior art is that the device in the embodiment of the present invention first acquires the available resources of the beacon frame from the base station of cellular communication or other devices, and the information used in the embodiment of the present invention Contents included in the beacon frame, the beacon frame in the embodiment of the present invention includes, in addition to the identifier of the beacon sending device, the identifier of the beacon receiving device, and the number of the beacon slot, one or more of the following fields: Beacon Frame type identification, master-slave communication device identification, beacon frame available resource location, service type, communication peer device identification, number of requested resources and information sending location. Wherein, which fields are included in the beacon frame may be different according to whether the devices participating in the D2D communication are performing mutual discovery, resource negotiation or information transmission. The device of D2D communication communicates through the authorized frequency band of the operator.
其中，信标帧类型标识：可以标识信标帧的类型，可以为“设备发现信标帧”、“资源申请信标帧”和“信息发送知会信标帧”等。其中，参与D2D通信的设备可以发送上述设备发现信标帧来实现其它设备对于信标帧发送设备的发现，或者对于其它指定设备的发现，而资源申请信标帧则可以用于发现设备之后，当需要发送信息时发送该信标帧来协商可用资源，同时，信息发送知会信标帧则可以用来指示当前超帧中有信息发送，指示接收设备在对应的资源位置上接收信息。可见不同的信标帧类型包含不同的信息内容，也能满足实际应用中不同的功能需求。Wherein, the beacon frame type identification: can identify the type of the beacon frame, which can be "device discovery beacon frame", "resource application beacon frame" and "information sending notification beacon frame" and so on. Among them, the devices participating in the D2D communication can send the above-mentioned device discovery beacon frame to realize the discovery of the beacon frame sending device by other devices, or the discovery of other specified devices, and the resource application beacon frame can be used after discovering the device, When information needs to be sent, the beacon frame is sent to negotiate available resources. At the same time, the information sending notification beacon frame can be used to indicate that there is information to send in the current superframe, and instruct the receiving device to receive information at the corresponding resource location. It can be seen that different beacon frame types contain different information content, and can also meet different functional requirements in practical applications.
需要说明的是，资源申请是在设备成功发现之后进行的，但是，设备在接收到资源申请信标帧时也是可以实现设备发现的，其中包括对指定设备的发现；同样，信息发送知会信标帧是在资源申请成功的基础上进行的，但是设备在接收到资源申请信标帧时也可以实现设备发现或者资源协商。It should be noted that the resource application is performed after the device is successfully discovered. However, the device can also realize the device discovery when it receives the resource application beacon frame, including the discovery of the specified device; The beacon frame is performed on the basis of successful resource application, but the device can also realize device discovery or resource negotiation when receiving the resource application beacon frame.
主从通信设备标识：用来标识发送信标帧的设备是主设备还是从设备。D2D通信双方，无论是否与基站失去连接，只要以主从方式进行通信，处于主地位的设备为主设备，处于从地位的设备为从设备。如果不以主从方式进行通信，D2D通信双方地位平等，则不区分主从设备。其中，主设备可以从蜂窝通信的基站侧或者其它主设备侧获取发送信标帧的可用资源位置信息，也可以自己定义信标帧可用资源位置信息，并可以根据需要把上述获取的、或者定义的信标帧可用资源位置信息发送给从设备；从设备可以从蜂窝通信的基站侧或者主设备侧获取信标帧可用资源位置信息，而不能自己定义信标帧可用资源位置信息。主从设备在发送信标帧之前，都需要获取信标帧可用资源位置信息。Master-slave communication device identification: used to identify whether the device sending the beacon frame is a master device or a slave device. Both sides of the D2D communication, no matter whether they lose connection with the base station or not, as long as they communicate in a master-slave manner, the device in the master position is the master device, and the device in the slave position is the slave device. If the communication is not performed in a master-slave manner, and the status of both D2D communication parties is equal, no distinction is made between the master and slave devices. Among them, the main device can obtain the available resource location information for sending beacon frames from the base station side of the cellular communication or other main device sides, or can define the available resource location information of the beacon frame by itself, and can use the above obtained or defined resource location information as needed The available resource location information of the beacon frame can be sent to the slave device; the slave device can obtain the available resource location information of the beacon frame from the base station side or the master device side of the cellular communication, but cannot define the available resource location information of the beacon frame by itself. Before sending the beacon frame, the master and slave devices need to obtain the available resource location information of the beacon frame.
其中，在下述三种场景下，主从设备的定义标准可以为：(1)、所有D2D设备都能与蜂窝通信网基站连接的情况下，所有设备都可以从蜂窝通信基站侧获取信标帧可用资源位置信息，可以以是否选择主从式通信、以及在主从式通信中的主从地位，确定设备是主设备还是从设备；(2)、在有部分D2D设备与基站失去连接的情况下，与基站失去连接的设备可以是从设备，其它设备可以根据是否选择主从式通信模式，以及在主从通信模式中的主从地位，来确定主设备还是从设备；(3)、在所有D2D通信的设备都与基站失去连接的情况下，可以按照一定的规则，选择部分设备作为主设备，比如选择信标时隙为0、1或者其它时隙的设备作为主设备，并将剩余时隙对应的设备作为从设备。需要说明的是，除非经过预先设定，一个参与D2D通信的设备默认情况下为主设备；Among them, in the following three scenarios, the definition standard of the master-slave device can be: (1), when all D2D devices can be connected to the base station of the cellular communication network, all devices can obtain the beacon frame from the side of the cellular communication base station Available resource location information can determine whether the device is a master device or a slave device based on whether to choose master-slave communication and the master-slave status in master-slave communication; (2) In the case that some D2D devices lose connection with the base station In this case, the device that loses connection with the base station can be a slave device, and other devices can determine whether the master device or the slave device is based on whether to choose the master-slave communication mode and the master-slave status in the master-slave communication mode; (3). When all D2D communication devices lose connection with the base station, some devices can be selected as master devices according to certain rules, for example, devices with beacon timeslots of 0, 1 or other timeslots can be selected as master devices, and the remaining The device corresponding to the time slot acts as a slave device. It should be noted that, unless pre-set, a device participating in D2D communication is the master device by default;
信标帧可用资源位置：可以以位图(bitmap)的形式示意出可以发送信标帧的资源位置；Available resource locations for beacon frames: the resource locations that can send beacon frames can be indicated in the form of bitmaps;
业务类型：用来标识信标发送设备要求的业务类型，可以表示当前设备在进行哪一种业务类型，比如语音业务，视频业务，抄表业务等。需要说明的是，设备的业务类型可以预先定义优先级。Service type: used to identify the service type required by the beacon sending device, which can indicate which service type the current device is performing, such as voice service, video service, meter reading service, etc. It should be noted that, the service type of the device may pre-define the priority.
通信对端设备标识：用来唯一标识通信对端设备，该通信对端设备标识根据信标帧的类型，设置不同的通信对端设备的标识；Communication peer device identification: used to uniquely identify the communication peer device, the communication peer device ID is set according to the type of the beacon frame, and different communication peer device identifications are set;
所申请资源数量：表示信标帧的发送设备在下一超帧中申请的资源数量。需要说明的是，为公平起见，可以限定每个超帧周期内，每个设备申请的资源的数量，以为其它设备在同一个超帧中申请资源保留机会；The number of resources applied for: indicates the number of resources that the sending device of the beacon frame applies for in the next superframe. It should be noted that, for the sake of fairness, the number of resources applied by each device in each superframe period can be limited, so that other devices can apply for resource reservation opportunities in the same superframe;
信息发送的位置：指示当前超帧中，信息发送所使用的资源位置。Information sending location: indicates the resource location used for information sending in the current superframe.
需要说明的是，上述字段，并不一定会在每个类型的信标帧中都全部包含，可以根据功能需要进行取舍。信标帧所包括的内容可以根据“信标帧类型标识”字段确定。It should be noted that the above-mentioned fields may not all be included in every type of beacon frame, and may be selected according to functional requirements. The content included in the beacon frame can be determined according to the "beacon frame type identifier" field.
则本发明实施例在实际应用中，把可用资源定义为“超帧周期”，并把一个“超帧周期”划分成“信标周期”和“数据周期”，参与D2D通信的设备可以在“信标周期”内发送各种类型的信标帧，在“数据周期”内发送信息。其中，“超帧周期”并不局限于时域上的一段时间，也可以是一段时间和/或一段频段上的所有可用资源。比如，可以是LTE(LongTerm Evolution，长期演进)系统中的一个子帧中的所有可用时频资源块；同样，“信标周期”和“数据周期”也不局限于时域上的一段时间，也可以是频域上的一段频段。“信标周期”又划分成若干“信标时隙”，比如，可以是LTE系统中相对“信标周期”更小的一块时频资源。Then, in the practical application of the embodiment of the present invention, the available resources are defined as "superframe period", and a "superframe period" is divided into "beacon period" and "data period", and the devices participating in D2D communication can be in " Various types of beacon frames are sent during the "beacon period" and information is sent during the "data period". Wherein, the "superframe period" is not limited to a period of time in the time domain, and may also be a period of time and/or all available resources in a frequency band. For example, it can be all available time-frequency resource blocks in a subframe in an LTE (LongTerm Evolution, long-term evolution) system; similarly, the "beacon period" and "data period" are not limited to a period of time in the time domain, It may also be a frequency band in the frequency domain. The "beacon period" is further divided into several "beacon slots", for example, it may be a piece of time-frequency resource smaller than the "beacon period" in the LTE system.
参考图1，在本发明一个实施例中，实现本发明实施例所提供的设备发现方法的一种实施例，可以包括以下步骤：Referring to FIG. 1, in one embodiment of the present invention, implementing an embodiment of the device discovery method provided by the embodiment of the present invention may include the following steps:
步骤101：接收设备接收其他D2D设备发送的第一设备发现信标帧，所述第一设备发现信标帧的参数包括：第一通信对端设备标识；所述第一通信对端设备标识不为空时表示信标帧发送设备在参与所述接收设备的设备发现过程，不为空的通信对端设备标识即为所述接收设备的标识。Step 101: The receiving device receives the first device discovery beacon frame sent by other D2D devices, and the parameters of the first device discovery beacon frame include: the first communication peer device identifier; the first communication peer device identifier is not When it is empty, it means that the beacon frame sending device is participating in the device discovery process of the receiving device, and the identifier of the communication peer device that is not empty is the identifier of the receiving device.
在本发明实施例中，如果其他D2D设备向当前设备发送了设备发现信标帧，而该设备发现信标帧的参数至少可以包括：通信对端设备标识；通信对端设备标识不为空时表示所述其他设备在参与所述当前设备的设备发现过程，不为空的所述第一通信对端设备标识为所述当前设备的标识。在本步骤中，当该通信对端设备标识指示出了所述接收设备的标识时，就能够实现对指定设备(即是接收设备)的发现，或者能够实现对于接收设备之前发送的指定设备发现请求的响应。In the embodiment of the present invention, if other D2D devices send a device discovery beacon frame to the current device, and the parameters of the device discovery beacon frame may at least include: the identifier of the communication peer device; when the identifier of the communication peer device is not empty Indicates that the other device is participating in the device discovery process of the current device, and the identifier of the first communication peer device that is not empty is the identifier of the current device. In this step, when the identification of the communication peer device indicates the identification of the receiving device, the discovery of the designated device (that is, the receiving device) can be realized, or the discovery of the designated device sent by the receiving device can be realized. The response to the request.
在实际应用中，所述设备发现信标帧还可以包括主从通信设备标识，所述主动通信设备标识可以表示发送设备发现信标帧的设备是主设备还是从设备。设备发现过程因为设备发现信标帧所包括的字段不同，也可以分为第一设备发现子过程和第二设备发现子过程。在第一设备发现子过程中，发送设备发现信标帧1(为了方便区分，将在第一设备发现子过程中发送的设备发现信标帧定义为设备发现信标帧1，而将第二设备发现子过程中发送的设备发现信标帧定义为设备发现信标帧2)的其他设备为主设备，在这种情况下所述设备发现信标帧1具体可以包括：信标帧类型标识、主从通信设备标识、信标帧可用资源位置、通信对端设备标识和业务类型；其中，信标帧类型标识指示当前信标帧为设备发现信标帧1，也即，当前参与的设备发现过程为第一设备发现子过程；主从通信设备标识则指示为主设备；信标帧可用资源位置可以以bitmap形式指示可以发送信标帧的资源；而对于通信对端设备标识来讲：如果指示发现目标设备，或者针对别的设备发现请求的响应，那么，该字段设置为待发现的目标设备的标识，或者发送所述发现请求的设备的标识；否则，通信对端设备标识为空；业务类型：指示发送设备发现信标帧的其他设备所要求的业务类型。In practical applications, the device discovery beacon frame may further include a master-slave communication device identifier, and the active communication device identifier may indicate whether the device sending the device discovery beacon frame is a master device or a slave device. The device discovery process can also be divided into a first device discovery sub-process and a second device discovery sub-process because the fields included in the device discovery beacon frame are different. In the first device discovery sub-process, the sending device discovers beacon frame 1 (for convenience of distinction, the device discovery beacon frame sent in the first device discovery sub-process is defined as device discovery beacon frame 1, and the second The device discovery beacon frame sent in the device discovery sub-process is defined as other devices in the device discovery beacon frame 2) master device, in this case, the device discovery beacon frame 1 may specifically include: beacon frame type identification , the master-slave communication device identifier, the available resource location of the beacon frame, the communication peer device identifier, and the service type; wherein, the beacon frame type identifier indicates that the current beacon frame is the device discovery beacon frame 1, that is, the currently participating device The discovery process is the first device discovery sub-process; the master-slave communication device identifier indicates the master device; the available resource position of the beacon frame can indicate the resource that can send the beacon frame in the form of a bitmap; and for the communication peer device identifier: If it indicates the discovery of the target device, or the response to the discovery request of other devices, then this field is set to the identity of the target device to be discovered, or the identity of the device that sent the discovery request; otherwise, the identity of the communication peer device is empty ; Service type: Indicates the service type required by other devices sending the device discovery beacon frame.
而在主设备发送所述设备发现信标帧1的情况下，如果网络中没有从设备存在，即：在网络中没有监听到“主从通信设备标识”字段指示为从设备的信标帧，或者，网络中没有需要从其它主设备获取信标帧位置信息的主设备存在时，则可以选定主设备定期发送该信标帧；如果网络中有从设备存在，即，在网络中监听到“主从通信设备标识”字段指示为从设备的信标帧，或者网络中有需要从其它主设备获取信标帧位置信息的主设备存在时，选定主设备持续发送该信标帧。上述“选定主设备”，可以根据既定规则选取。比如，网络中存在多个主设备时，可以选择信标时隙编号较小或者较大的主设备；网络中不存在主设备时，设备可以以志愿的方式，或者，约定由某些设备(比如信标时隙较小或者较大的设备)进行角色变化，转换成主设备，然后从变换后的主设备中，选择设备作为“选定主设备”。In the case where the master device sends the device discovery beacon frame 1, if there is no slave device in the network, that is: the beacon frame indicated as a slave device is not detected in the network in the "master-slave communication device identification" field, Or, when there is no master device in the network that needs to obtain the position information of the beacon frame from other master devices, the master device can be selected to send the beacon frame periodically; if there is a slave device in the network, that is, the The "master-slave communication device identification" field indicates a beacon frame of a slave device, or when there is a master device in the network that needs to obtain beacon frame location information from other master devices, the selected master device continues to send the beacon frame. The above "selected master device" can be selected according to established rules. For example, when there are multiple master devices in the network, the master device with a smaller or larger beacon slot number can be selected; For example, a device with a smaller or larger beacon time slot) changes its role and converts it into a master device, and then selects the device from the converted master devices as the "selected master device".
在第二设备发现子过程中，其他设备发送的“设备发现信标帧2”具体包括的字段有：信标帧类型标识、主从通信设备标识、通信对端设备标识和业务类型。其中，该信标帧类型标识指示为当前信标帧为设备发现信标帧2，也即，当前参与的设备发现过程为第二设备发现子过程；主从通信设备标识则根据发送信标帧的设备是从设备还是主设备设定；而对于通信对端设备标识来讲：如果指示发现目标，或者针对其它设备的发现请求的响应，那么，该字段设置为发现目标设备的标识，或者发送发现请求的该设备的标识；否则，该标识设置为空；业务类型则设置为指示信标发送设备要求的业务类型。In the second device discovery sub-process, the "device discovery beacon frame 2" sent by other devices specifically includes the following fields: beacon frame type identifier, master-slave communication device identifier, communication peer device identifier and service type. Wherein, the beacon frame type identifier indicates that the current beacon frame is the device discovery beacon frame 2, that is, the currently participating device discovery process is the second device discovery sub-process; the master-slave communication device identifier is based on sending the beacon frame It is set whether the device is a slave device or a master device; and for the identification of the communication peer device: if it indicates the discovery target, or the response to the discovery request of other devices, then this field is set to the identification of the discovery target device, or send The identification of the device for the discovery request; otherwise, the identification is set to null; the service type is set to indicate the service type required by the beacon sending device.
在第二设备发现子过程中，设备发现信标帧2主要由从设备进行发送，使别的设备能够对其进行发现，或者发现指定设备。而对于主设备，在第一设备发现子过程中被选定需要定期或者持续发送设备发现信标帧1的主设备，也可以在发送“设备发现信标帧1”之外，发送该设备发现信标帧2；而未被选定发送“设备发现信标帧1”的主设备，可以持续发送该设备发现信标帧2。In the second device discovery sub-process, the device discovery beacon frame 2 is mainly sent by the slave device, so that other devices can discover it, or discover a specified device. As for the master device, in the first device discovery sub-process, the master device that needs to periodically or continuously send the device discovery beacon frame 1 can also send the device discovery beacon frame 1 in addition to sending the "device discovery beacon frame 1". Beacon frame 2; while the master device that is not selected to send the "device discovery beacon frame 1" can continue to send the device discovery beacon frame 2.
步骤102：接收设备依据所述第一设备发现信标帧中的第一通信对端设备标识实现对所述其他设备的发现。Step 102: The receiving device discovers the other device according to the first communication peer device identifier in the first device discovery beacon frame.
针对于前述的接收设备，不管是接收到设备发现信标帧1还是设备发现信标帧2都能根据其中的字段来实现对所述其他设备的发现。For the aforementioned receiving device, no matter whether the device discovery beacon frame 1 or the device discovery beacon frame 2 is received, the other devices can be discovered according to the fields therein.
具体的，在所述设备发现信标帧中的通信对端标识为空的情况下，所述接收设备通过接收所述设备发现信标帧就实现了对所述发送设备的发现。而如果通信对端标识不为空，接收设备就需要判断自己是否曾经向所述其他设备发送过设备发现信标帧，如果否，则所述接收设备向所述其他设备返回设备发现信标帧，用于响应信标帧发送设备的指示发现目标的设备发现请求，其中，所述返回的设备发现信标帧中的通信对端设备标识为所述其他设备的标识；如果是，则接收设备直接依据所述设备发现信标帧实现对所述其他设备的发现，即是该接收到的信标帧是对于接收设备之前发送的信标帧的响应，就完成了自己之前发起的指示发现目标的设备发现过程。Specifically, in the case that the communication peer identifier in the device discovery beacon frame is empty, the receiving device discovers the sending device by receiving the device discovery beacon frame. And if the communication peer identification is not empty, the receiving device needs to judge whether it has ever sent a device discovery beacon frame to the other device, if not, the receiving device returns a device discovery beacon frame to the other device , for responding to a device discovery request indicating a discovery target from a beacon frame sending device, wherein the returned device discovers that the communication peer device identifier in the beacon frame is the identifier of the other device; if yes, the receiving device Realize the discovery of the other devices directly based on the device discovery beacon frame, that is, the received beacon frame is a response to the beacon frame sent by the receiving device before, and the instruction discovery goal initiated by itself is completed device discovery process.
对于接收设备是从设备，或者接收设备是需要从其它主设备获取信标帧可用资源位置信息的主设备来讲，接收设备也可以根据该信标帧携带的“信标帧可用资源位置”信息，获取可以发送信标帧的资源位置，然后根据监听的其它设备发送的信标帧信息，选择一个空闲时隙，在信标帧可用资源中未被使用的资源上，发送自己的设备发现信标帧，从而能够让别的设备发现自己。If the receiving device is a slave device, or the receiving device is a master device that needs to obtain information about the location of resources available for beacon frames from other master devices, the receiving device can also use the "resource location available for beacon frames" information carried by the beacon frame , to obtain the resource location where the beacon frame can be sent, and then select a free time slot according to the beacon frame information sent by other monitored devices, and send your own device discovery signal on the unused resources in the available resources of the beacon frame Mark the frame so that other devices can discover themselves.
需要说明的是，对于上述设备发现过程中的指定了发现目标设备(即是通信对端标识字段所表示的通信对端)的设备发现过程而言，发送设备发现请求的设备Drequest，需要监听到发现目标设备Dresponse发送的相应的设备发现信标帧作为响应，才完成整个发现过程。在实际应用中也可以设定，如果设备Drequest尝试发送若干次针对设备Dresponse的特定设备发现信标帧之后，或者在某次特定设备发现信标发送之后的若干周期内，未接收到所述发现目标设备Dresponse的响应信标帧，则认为发现目标设备Dresponse不在其通信范围内。It should be noted that, for the device discovery process in which the discovery target device (that is, the communication peer represented by the communication peer identification field) is specified in the above device discovery process, the device Drequest that sends the device discovery request needs to monitor the The entire discovery process is completed only when the corresponding device discovery beacon frame sent by the target device Dresponse is found as a response. In practical applications, it can also be set that if the device Drequest tries to send a specific device discovery beacon frame for the device Dresponse several times, or within several cycles after a specific device discovery beacon is sent, the discovery is not received. If the target device Dresponse responds to the beacon frame, it is considered that the target device Dresponse is not within its communication range.
在本实施例中，设备进行发现时发送设备发送信标帧，还包括了通信对端设备标识，该通信对端设备标识为空时能实现任意设备的发现，不为空时该通信对端设备标识就指示了指定设备，当某个接收设备的标识与该通信对端设备标识相同时，该接收设备再向发送信标帧的其他设备返回通信对端设备标识设置为该其他设备标识的设备发现信标帧，就能够实现指定设备的发现过程，也为下一步的资源协商过程可以节省出时间，从而在后续进行资源协商时提高效率。In this embodiment, when the device is discovering, the sending device sends a beacon frame, which also includes the identification of the communication peer device. When the communication peer device ID is empty, it can realize the discovery of any device. When it is not empty, the communication peer The device ID indicates the designated device. When the ID of a receiving device is the same as the ID of the communication peer device, the receiving device returns to the other device that sent the beacon frame. When the device discovers the beacon frame, the discovery process of the specified device can be realized, and it can also save time for the next resource negotiation process, thereby improving the efficiency of subsequent resource negotiation.
参考图2，在本发明一个实施例中，实现本发明实施例所提供的设备发现方法的另一种实施例，可以包括以下步骤：Referring to FIG. 2, in one embodiment of the present invention, implementing another embodiment of the device discovery method provided by the embodiment of the present invention may include the following steps:
步骤201：发送设备获取信标帧可用资源位置信息和超帧周期信息，并至少扫描一个信标周期，在所述信标周期内扫描到至少一个信标帧的情况下，进入步骤202，在所述信标周期内没有扫描到信标帧的情况下，进入步骤203。Step 201: The sending device obtains the available resource location information of the beacon frame and the superframe period information, and scans at least one beacon period. If at least one beacon frame is scanned within the beacon period, enter step 202, and If no beacon frame is scanned within the beacon period, go to step 203 .
步骤202：在所述信标周期中选择一个空闲的信标时隙，并在所述信标时隙上向D2D通信中的其他设备发送第一设备发现信标帧。Step 202: Select an idle beacon slot in the beacon period, and send a first device discovery beacon frame to other devices in D2D communication on the beacon slot.
步骤203：在信标周期内任意选择一个信标时隙，并在所述任意选择的信标时隙上向D2D通信中的其他设备发送第二设备发现信标帧。Step 203: Randomly select a beacon slot in the beacon period, and send a second device discovery beacon frame to other devices in the D2D communication on the randomly selected beacon slot.
在本实施例中，发送设备在发送信标帧之前，首先获取信标帧可用资源位置信息和超帧周期信息，主设备可以从蜂窝通信网络侧或者其它主设备侧获取信标帧可用资源位置信息，或者自己定义信标帧可用资源位置信息，并根据需要把上述信标帧可用资源位置信息广播给其它设备；从设备，可以从蜂窝通信的网络侧或者主设备侧获取信标帧可用资源位置信息。并至少扫描一个信标周期以获取现有的信标信息。如果设备扫描到一个或多个信标帧，设备在信标周期中选择一个空闲的信标时隙发送自己的信标帧；否则，设备可以在信标周期内任意选择一个信标时隙发送自己的信标帧；每个设备在自己的信标时隙上发送设备自己的信标，在其它时隙上接收其它设备发送的信标。In this embodiment, before sending the beacon frame, the sending device first obtains the location information of the available resources of the beacon frame and the information of the superframe period, and the master device can obtain the location of the available resources of the beacon frame from the cellular communication network side or other master devices. Information, or define the location information of the available resources of the beacon frame by yourself, and broadcast the location information of the available resources of the beacon frame to other devices as needed; the slave device can obtain the available resources of the beacon frame from the network side or the main device side of the cellular communication location information. And scan for at least one beacon cycle for existing beacon information. If the device scans one or more beacon frames, the device selects an idle beacon slot in the beacon period to send its own beacon frame; otherwise, the device can arbitrarily select a beacon slot to send in the beacon period Own beacon frame; each device sends its own beacon on its own beacon slot, and receives beacons sent by other devices on other slots.
步骤204：所述其他设备依据所述第一设备发现信标帧或第二设备发现信标帧实现与所述发送设备的同步。Step 204: The other device implements synchronization with the sending device according to the first device discovery beacon frame or the second device discovery beacon frame.
如果所述其他设备在接收到第一设备发现信标帧或第二设备发现信标帧之后，还未完成与D2D通信网络的同步，则除完成对于发送第一或第二设备发现信标帧的发送设备实现发现之外，还可以根据该信标帧获得与发送设备的同步，比如，信标帧接收时间为TRx，信标帧时隙编号为SN，信标时隙长度为TS，那么，可以计算信标周期的开始时间就为：T＝TRx-TS×SN。If the other device has not yet completed synchronization with the D2D communication network after receiving the first device discovery beacon frame or the second device discovery beacon frame, except for sending the first or second device discovery beacon frame In addition to realizing the discovery of the sending device, the synchronization with the sending device can also be obtained according to the beacon frame. For example, the receiving time of the beacon frame is TRx, the time slot number of the beacon frame is SN, and the length of the beacon time slot is TS. , the start time of the beacon period can be calculated as: T=TRx-TS×SN.
在实际应用中，需要同步的不一定只是从设备，主设备如果不能与蜂窝网络同步，并且自己又没有定义自己的超帧周期的话，就需要与现有的超帧周期同步。两个主设备也可以进行通信。In practical applications, it is not necessarily only the slave device that needs to be synchronized. If the master device cannot synchronize with the cellular network and does not define its own superframe period, it needs to synchronize with the existing superframe period. Two master devices can also communicate.
步骤205：所述其他设备依据所述第一设备发现信标帧或第二设备发现信标帧实现对所述其他设备的发现。Step 205: The other device discovers the other device according to the first device discovery beacon frame or the second device discovery beacon frame.
所述其他设备再依据接收到的第一设备发现信标帧或第二设备发现信标帧对发送设备进行发现。具体的发现过程在实施例1中已经详细介绍，在此不再赘述。The other device then discovers the sending device according to the received first device discovery beacon frame or the second device discovery beacon frame. The specific discovery process has been introduced in detail in Embodiment 1, and will not be repeated here.
步骤206：在所述第一或第二设备发现信标帧的参数还包括信标帧可用资源位置的情况下，所述信标帧可用资源位置用于指示当前可以发送信标帧的资源；所述其他设备依据所述第一设备发现信标帧，获取可以发送第三设备发现信标帧的信标帧可用资源位置。Step 206: In the case where the first or second device finds that the parameters of the beacon frame also include the available resource position of the beacon frame, the available resource position of the beacon frame is used to indicate the resources that can currently send the beacon frame; The other device obtains, according to the first device discovery beacon frame, the available resource location of the beacon frame that can send the third device discovery beacon frame.
在本实施例中，所述第一或者第二设备发现信标帧中的参数还包括信标帧可用资源位置的情况下，所述信标帧可用资源位置可以指示当前可以发送信标帧的资源，。In this embodiment, when the first or second device finds that the parameters in the beacon frame also include the available resource location of the beacon frame, the available resource location of the beacon frame may indicate the location where the beacon frame can currently be sent. resource,.
需要说明的是，在存在从设备的场景下，如果主设备能够与基站连接，那么发送设备发现信标帧的主设备就可以从基站侧获取信标帧可用资源位置；如果主设备不能与基站连接，那么主设备或者从别的主设备侧获取信标帧可用资源位置信息，或者自己设置信标帧可用资源位置。主设备根据需要把信标帧可用资源位置发送给其它主设备或者从设备；从设备基于主设备发送的信标帧可用资源位置，完成同步和可用资源选择。It should be noted that, in the scenario where there is a slave device, if the master device can connect to the base station, then the master device that the sending device discovers the beacon frame can obtain the available resource location of the beacon frame from the base station side; if the master device cannot connect to the base station connection, then the master device either obtains information on the available resource location of the beacon frame from another master device, or sets the available resource location of the beacon frame by itself. The master device sends the available resource position of the beacon frame to other master devices or slave devices as needed; the slave device completes synchronization and available resource selection based on the available resource position of the beacon frame sent by the master device.
步骤207：接收设备在信标帧可用资源中未被使用的资源位置上返回第三设备发现信标帧。Step 207: The receiving device returns the third device to discover a beacon frame at an unused resource position in the available resources of the beacon frame.
接收设备可以在信标帧可用资源中未被使用的资源位置上返回第三设备发现信标帧，以实现所述其他设备对所述当前设备的发现，其中，所述第三设备发现信标帧中的第二通信对端设备标识为所述其他设备的标识。The receiving device may return a third device discovery beacon frame at an unused resource position in the available resources of the beacon frame, so as to realize the discovery of the current device by the other device, wherein the third device discovers the beacon frame The identifier of the second communication peer device in the frame is the identifier of the other device.
另外，在本实施例中如果接收设备为从设备，或者需要从其它主设备获取信标帧可用资源位置信息的主设备，接收设备也可以根据“信标帧可用资源位置”信息，获取可以发送信标帧的资源位置，然后再根据监听的其它设备发送的信标帧信息，选择一个空闲时隙，在信标帧可用资源中未被使用的资源上，发送自己的信标帧，从而能够让其它设备能够发现自己。In addition, in this embodiment, if the receiving device is a slave device, or a master device that needs to obtain information about the location of resources available for beacon frames from other master devices, the receiving device can also obtain information about the location of available resources for beacon frames according to the information about the location of available resources for beacon frames. Send the resource position of the beacon frame, and then select a free time slot according to the beacon frame information sent by other monitoring devices, and send your own beacon frame on the unused resources in the available resources of the beacon frame, so that Allow other devices to discover themselves.
本实施例中，当前设备在发送设备发现信标帧之前先进行扫描，并且能够实现与其他设备的同步，以及还可以在实现对其他设备进行发现的基础上，向其他设备发送设备发现信标帧以实现其他设备对自己的发现。In this embodiment, the current device scans before sending the device discovery beacon frame, and can realize synchronization with other devices, and can also send device discovery beacons to other devices on the basis of realizing discovery of other devices frame to enable other devices to discover themselves.
参考图3，在本发明一个实施例中，实现本发明实施例所提供的资源协商方法，可以包括以下步骤：Referring to FIG. 3, in one embodiment of the present invention, implementing the resource negotiation method provided by the embodiment of the present invention may include the following steps:
步骤301：当前设备接收其他设备在当前超帧发送的资源需求信息，所述资源需求信息包括所述其他设备的业务优先级、所述其他设备信标所在的信标时隙和/或所述其他设备申请资源的数量。Step 301: The current device receives the resource requirement information sent by other devices in the current superframe, the resource requirement information includes the service priority of the other device, the beacon slot where the other device's beacon is located and/or the The number of resources requested by other devices.
本实施例可以应用于参与物联网D2D通信的已经互相发现的当前设备和其他设备上，当前设备在接收到的其他设备发送的信标帧并获取资源需求信息之后，就可以根据其中的其他设备的业务优先级、和/或其他设备信标所在的信标时隙和/或其他设备申请资源的数量计算自己能够发送信息的资源位置。This embodiment can be applied to the current device and other devices that have discovered each other participating in the D2D communication of the Internet of Things. After the current device receives the beacon frame sent by other devices and obtains the resource requirement information, it can Calculate the resource position where it can send information based on the priority of the business, and/or the beacon time slot where the beacon of other devices is located and/or the number of resources applied for by other devices.
步骤302：当前设备依据其他设备的业务优先级、所述其他设备信标所在的信标时隙和/或所述其他设备申请资源的数量，计算所述当前设备能够分配到的资源位置。Step 302: The current device calculates the resource position that the current device can allocate to according to the service priority of other devices, the beacon slot where the other device is located and/or the number of resources applied by the other device.
已经完成设备发现的当前设备和其他设备需要进行通信时，可以通过约定的方式进行资源协商，参考图4所示，所述步骤302，具体可以包括：When the current device that has completed device discovery needs to communicate with other devices, resource negotiation can be performed in an agreed manner. Referring to FIG. 4, the step 302 can specifically include:
步骤401：当前设备按照所述其他设备的业务优先级、和/或所述其他设备信标所在的信标时隙和/或所述其他设备申请资源的数量对有资源申请需求的的设备进行排序；所述有资源申请需求的的设备包括所述当前设备和所述其他设备；Step 401: The current device conducts a resource application request for the device according to the service priority of the other device, and/or the beacon time slot where the other device's beacon is located, and/or the number of resources applied by the other device. Sorting; the device with resource application requirements includes the current device and the other devices;
其中，Dsender为信息发送设备，Dreceiver为信息接收设备，有信息发送需求的所有的Dsender设备，在获取到资源需求信息之后，根据如下规则进行资源协商：Among them, Dsender is an information sending device, Dreceiver is an information receiving device, and all Dsender devices that have information sending requirements, after obtaining resource requirement information, perform resource negotiation according to the following rules:
Dsender设备监听到所有信标之后，获取自己和相邻设备的资源需求信息，然后，对资源需求信息按照业务优先级从高到低、请求设备信标所在的信标时隙从大到小(或者从小到大)、所申请资源的数量从大到小(或者从小到大)排序，然后对下一超帧的“数据周期”中的可用资源进行分配，并计算自身可以分配到的资源的位置。例如，所有资源需求信息中，业务优先级较高的需求，优先获得资源分配；在同等业务优先级情况下，信标时隙较小(大)的需求优先获得资源分配；或者，在同等业务优先级情况下，资源申请数量较大(小)的需求优先获得资源分配。那么，Dsender按照上述优先级对申请资源的设备进行排序，比如排序结果为：D1、D2、...、Dsender、...、Dn-1、Dn，相应的所申请的资源分别为：R1、R2、...、Rsender、...、Rn-1、Rn。D Afterthe sender device listens to all the beacons, it obtains the resource requirement information of itself and neighboring devices, and then, the resource requirement information is ranked from high to low according to the business priority, and the beacon time slot where the request device beacon is located is from large to small (or from small to large), sort the number of requested resources from large to small (or from small to large), and then allocate the available resources in the "data period" of the next superframe, and calculate the resources that can be allocated by itself s position. For example, in all resource demand information, the demand with higher business priority will be given priority in resource allocation; in the case of the same business priority, the demand with smaller (larger) beacon slots will be given priority in resource allocation; or, in the same business In the case of priority, the demand with a large (small) number of resource applications is given priority in resource allocation. Then, Dsender sorts the devices applying for resources according to the above priorities, for example, the sorting results are: D1 , D2 , ..., Dsender , ..., Dn-1 , Dn The resources are respectively: R1 , R2 , . . . , Rsender , . . . , Rn-1 , Rn .
需要说明的是，所述当前设备可以通过接收包括所申请资源的数量的资源申请信标帧，或者通过接收包括所申请资源的数量的信息发送知会信标帧的方式，获取所述资源需求信息中的所述其他设备申请资源的数量。It should be noted that, the current device may obtain the resource requirement by receiving a resource request beacon frame including the quantity of requested resources, or by receiving information including the quantity of requested resources and sending a notification beacon frame The number of resources requested by the other devices in the information.
步骤402：按照所述排序的结果计算所述当前设备能够分配到的资源。Step 402: Calculate resources that can be allocated to the current device according to the sorting result.
根据在步骤401中的排序结果，可以得知Dsender的可以占用的资源就是从开始的Rsender个资源，s即是排序的序号。According to the sorting result in step 401, it can be known that the resource that can be occupied by Dsender is from The first Rsender resources, s is the serial number of sorting.
可以理解的是，如果设备通过计算，发现自己在一个超帧的“数据周期”中能够分得所申请的资源，则在下一超帧的信标帧中包含申请到的资源的位置；否则，设备继续在下一超帧的“信标周期”中继续发送“资源请求信标帧”，继续申请资源。It can be understood that if the device finds that it can obtain the requested resources in the "data period" of a superframe through calculation, the location of the requested resources will be included in the beacon frame of the next superframe; otherwise, The device continues to send the "resource request beacon frame" in the "beacon period" of the next superframe, and continues to apply for resources.
为公平起见，可以设定一个周期，使得资源分配的优先级以业务优先级从小到大为顺序进行分配，信标时隙和所申请资源的数量，也可以以一定的周期为参考进行资源分配优先级从小到大或者从大到小的变换，或者信标时隙的优先级可以以循环移位的方式进行，比如有N个信标时隙，第一次以“N-1、N-2、...、1、0”为优先级顺序，第二次以“N-2、...、1、0、N-1”为优先级顺序，依次循环下去。For the sake of fairness, a period can be set so that the priority of resource allocation is allocated in order of business priority from small to large, and the number of beacon slots and applied resources can also be allocated with reference to a certain period The priority can be changed from small to large or from large to small, or the priority of beacon slots can be shifted in a cyclic manner. For example, if there are N beacon slots, the first time is "N-1, N- 2, ..., 1, 0" is the priority order, and the second time is "N-2, ..., 1, 0, N-1" as the priority order, and the cycle continues in turn.
本实施例中的资源申请过程也可以根据发送的资源申请信标帧的不同而分为第一资源申请子过程和第二资源申请子过程，在第一资源申请子过程中，所发送的“第一资源申请信标帧”包含信标帧类型标识、主从通信设备标识、信标帧可用资源位置、通信对端设备标识、业务类型和所申请资源数量；其中，信标帧类型标识：用于指示为“第一资源申请信标帧”；主从通信设备标识则根据当前设备是从设备还是主设备设定；信标帧可用资源位置则以bitmap形式指示可以发送信标帧的资源；通信对端设备标识则指示申请资源进行通信的对端设备的标识；业务类型：指示信标发送设备(当前设备)要求的业务类型；所申请资源数量用于指示申请的资源数量。The resource application process in this embodiment can also be divided into a first resource application sub-process and a second resource application sub-process according to the resource application beacon frames sent. In the first resource application sub-process, the sent " The first resource application beacon frame" includes the beacon frame type identifier, the master-slave communication device identifier, the available resource location of the beacon frame, the communication peer device identifier, the service type, and the number of resources requested; among them, the beacon frame type identifier: It is used to indicate "the first resource applies for a beacon frame"; the master-slave communication device identifier is set according to whether the current device is a slave device or a master device; the available resource position of the beacon frame indicates the resource that can send the beacon frame in the form of a bitmap The identification of the communication peer device indicates the identification of the peer device applying for resources for communication; service type: indicates the service type required by the beacon sending device (current device); the number of requested resources is used to indicate the number of resources requested.
该第一资源申请信标帧可以由需要发送“设备发现信标帧1”的“选定主设备”，在需要进行资源申请时发送，以进行资源申请。The first resource application beacon frame may be sent by the "selected master device" that needs to send the "device discovery beacon frame 1" when resource application is required, so as to perform resource application.
相应的，第二资源申请子过程则发送“第二资源申请信标帧”，包括信标帧类型标识、主从通信设备标识、通信对端设备标识、业务类型和所申请资源数量；其中，信标帧类型标识指示为“第二资源申请信标帧”；主从通信设备标识则根据当前设备是从设备还是主设备设定；通信对端设备标识则指示申请资源进行通信的对端设备的标识；业务类型则指示信标发送设备要求的业务类型；所申请资源数量用于指示申请的资源数量。Correspondingly, the second resource application sub-process sends a "second resource application beacon frame", including beacon frame type identification, master-slave communication device identification, communication peer device identification, business type and the number of resources requested; wherein, The beacon frame type identifier indicates "second resource application beacon frame"; the master-slave communication device identifier is set according to whether the current device is a slave device or a master device; the communication peer device identifier indicates the peer device that applies for resources for communication The service type indicates the service type required by the beacon sending device; the requested resource quantity is used to indicate the requested resource quantity.
该第二资源申请信标帧可以由需要发送“设备发现信标帧1”的“选定主设备”，在需要进行资源申请时，且在不需要发送“设备发现信标帧1”时，发送该第二资源申请信标帧进行资源申请；上述“选定主设备”之外的主设备，以及从设备，在需要进行资源申请时，可以发送该第二资源申请信标帧进行资源申请。The second resource application beacon frame can be sent by the "selected master device" that needs to send the "device discovery beacon frame 1", when resource application needs to be performed, and when the "device discovery beacon frame 1" does not need to be sent, Send the second resource application beacon frame for resource application; master devices other than the above "selected master device" and slave devices can send the second resource application beacon frame for resource application when resource application is required .
需要说明的是，本实施例中所发送的资源申请信标帧申请的是下一个超帧中的资源。也即发送资源申请信标帧的设备在当前超帧中通过发送“资源申请信标帧”来申请资源，而在下一个超帧中使用申请的资源(如果资源申请成功的话)发送信息，而如果设备没有申请到资源，下一超帧则会继续申请资源。It should be noted that the resource application beacon frame sent in this embodiment applies for resources in the next superframe. That is, the device that sends the resource application beacon frame applies for resources by sending a "resource application beacon frame" in the current superframe, and uses the requested resources (if the resource application is successful) to send information in the next superframe, and if If the device does not apply for resources, it will continue to apply for resources in the next superframe.
在本实施例中，通过在已经实现发现的两个设备上进行资源申请的协商，可以简化设备在发现之后的资源协商过程，并且因为各个设备都是基于自己及其他设备的资源申请情况进行的资源协商，所以可以提高设备之间资源协商的效率。In this embodiment, by negotiating resource applications on two devices that have already been discovered, the resource negotiation process after discovery can be simplified, and because each device is based on the resource application status of itself and other devices Resource negotiation, so the efficiency of resource negotiation between devices can be improved.
参考图5，在本发明一个实施例中，实现本发明实施例所提供的信息发送方法，可以包括以下步骤：Referring to FIG. 5, in one embodiment of the present invention, implementing the information sending method provided by the embodiment of the present invention may include the following steps:
步骤501：所述当前设备接收其他设备在当前超帧发送的资源需求信息，所述资源需求信息包括所述其他设备的业务优先级、所述其他设备信标所在的信标时隙和/或所述其他设备申请资源的数量；Step 501: The current device receives resource requirement information sent by other devices in the current superframe, the resource requirement information includes the service priority of the other device, the beacon slot where the other device beacons are located and/or The number of resources requested by the other devices;
本实施例应用于参与物联网D2D通信的已经互相发现的当前设备和其他设备上，所述当前设备即为需要发送信息的那个设备。This embodiment is applied to the current device and other devices that have discovered each other participating in the D2D communication of the Internet of Things, and the current device is the device that needs to send information.
步骤502：所述当前设备依据所述其他设备的业务优先级、所述其他设备信标所在的信标时隙和/或所述其他设备申请资源的数量，计算所述当前设备能够分配到的资源位置；Step 502: The current device calculates the number of resources that the current device can allocate according to the service priority of the other device, the beacon time slot where the other device's beacon is located, and/or the number of resources that the other device applies for. resource location;
步骤503：在所述当前超帧的下一个超帧中，所述当前设备向所述其他设备发送信息发送知会信标帧，所述信息发送知会信标帧包括信息发送的位置，所述信息发送的位置用于指示所述当前设备当前使用的资源位置。Step 503: In the next superframe of the current superframe, the current device sends an information transmission notification beacon frame to the other device, and the information transmission notification beacon frame includes the location of the information transmission, so The location where the information is sent is used to indicate the resource location currently used by the current device.
在所述当前设备资源申请成功之后，该当前设备就可以在申请的资源上发送信息。该信息发送过程也因为信息发送知会信标帧的不同，而分为第一信息发送子过程和第二信息发送子过程，其中，信息发送知会信标帧用来通知接收设备当前超帧中有信息发送。After the current device successfully applies for resources, the current device can send information on the applied resources. The information sending process is also divided into the first information sending sub-process and the second information sending sub-process because of the difference of the information sending notification beacon frame, wherein the information sending notification beacon frame is used to notify the receiving device of the current superframe There is a message sent in .
在所述第一信息发送子过程中，发送的第一信息发送知会信标帧包括：信标帧类型标识、主从通信设备标识、信标帧可用资源位置、通信对端设备标识、业务类型、所申请资源数量和信息发送的位置；其中，信标帧类型标识指示为“第一信息发送知会信标帧”；主从通信设备标识则根据设备是从设备还是主设备设定；信标帧可用资源位置可以bitmap形式指示可以发送信标帧的资源；通信对端设备标识则指示信息接收设备的标识；业务类型则指示信标发送设备要求的业务类型；所申请资源数量：如果信息发送设备信息未发送完毕，该字段设置为信息发送设备继续申请的资源的数量。否则，如果信息发送设备信息发送完毕，该字段置空，表明下一超帧信息发送设备不再申请资源；信息发送的位置则指示信息发送所使用的资源的起始位置。In the first information sending sub-process, the sent first information sending notification beacon frame includes: beacon frame type identifier, master-slave communication device identifier, beacon frame available resource location, communication peer device identifier, service type, the number of resources applied for, and the location of information transmission; among them, the beacon frame type identification is indicated as "the first information transmission notification beacon frame"; the master-slave communication device identification is set according to whether the device is a slave device or a master device; The available resource position of the beacon frame can indicate the resource that can send the beacon frame in the form of bitmap; the identification of the communication peer device indicates the identification of the information receiving device; the service type indicates the service type required by the beacon sending device; the number of resources requested: if The information sending device has not finished sending the information, and this field is set to the number of resources that the information sending device continues to apply for. Otherwise, if the information sending device has finished sending the information, this field is left blank, indicating that the information sending device will not apply for resources in the next superframe; the location of information sending indicates the starting location of the resource used for information sending.
上述第一信息发送知会信标帧由需要发送“设备发现信标帧1”的“选定主设备”，在需要进行信息发送知会时发送，用来进行信息发送知会。The above-mentioned first information transmission notification beacon frame is sent by the "selected master device" that needs to send "device discovery beacon frame 1" when it is necessary to perform information transmission notification, and is used for information transmission notification.
在上述第二信息发送子过程中，发送的“第二信息发送知会信标帧”包括：信标帧类型标识、主从通信设备标识、通信对端设备标识、业务类型、所申请资源数量和信息发送的位置；其中，信标帧类型标识指示为“第二信息发送知会信标帧”；主从通信设备标识则根据发送设备是从设备还是主设备设定；通信对端设备标识则指示信息接收设备的标识；业务类型则指示信标发送设备要求的业务类型；所申请资源数量：如果信息发送设备信息未发送完毕，该字段设置为信息发送设备继续申请的资源的数量。否则，如果信息发送设备信息发送完毕，该字段置空，表明下一超帧信息发送设备不再申请资源；信息发送的位置则指示信息发送当前所使用的资源的位置。In the above-mentioned second information sending sub-process, the sent "second information sending notification beacon frame" includes: beacon frame type identification, master-slave communication device identification, communication peer device identification, business type, and the number of resources requested and the location where the information is sent; among them, the beacon frame type identifier is indicated as "second information sending notification beacon frame"; the master-slave communication device identifier is set according to whether the sending device is a slave device or a master device; the communication peer device identifier It indicates the identification of the information receiving device; the service type indicates the service type required by the beacon sending device; the number of resources applied for: if the information of the information sending device has not been sent, this field is set to the number of resources that the information sending device continues to apply for. Otherwise, if the information sending device has finished sending the information, this field will be left blank, indicating that the information sending device will not apply for resources in the next superframe; the information sending location indicates the location of the resource currently used for information sending.
上述第二信息发送知会信标帧由需要发送“设备发现信标帧1”的“选定主设备”，在需要进行信息发送知会时，且在不需要发送“设备发现信标帧1”时，发送该第二信息发送知会信标帧进行信息发送知会；上述“选定主设备”之外的主设备，以及从设备，在需要进行信息发送知会时，发送该第二信息发送知会信标帧进行信息发送知会。The above-mentioned second information sending notification beacon frame is sent by the "selected master device" that needs to send "device discovery beacon frame 1". ", send the second information transmission notification beacon frame for information transmission notification; the master device other than the above "selected master device", and the slave device, when it is necessary to perform information transmission notification, send the second The information transmission notification beacon frame performs the information transmission notification.
所述其他设备可以在所述当前使用的资源位置上接收信息。对于接收信息发送知会信标帧的接收设备Dreceiver来讲，在一个超帧的信标周期内完成所有信标接收后，如果接收到“通信对端设备标识”设置为自身的标识的“信息发送知会信标帧”，则在该信息发送知会信标帧中的“信息发送的位置”项指示的“数据周期”的资源上去接收信息。当然，接收设备也可以在接收到“通信对端设备标识”设置为自身的标识的“资源申请信标帧”后，做必要的准备，以便为在下一超帧中更好的接收信息。The other device may receive information at the currently used resource location. For the receiving device Dreceiver that receives information and sends notification beacon frames, after completing all beacon receptions within the beacon period of a superframe, if it receives the "communication peer device identity" set as its own identity " Information transmission notification beacon frame", then the information is received on the resources of the "data period" indicated by the "information transmission location" item in the information transmission notification beacon frame. Of course, the receiving device can also make necessary preparations after receiving the "resource application beacon frame" in which the "communication peer device identifier" is set as its own identifier, so as to better receive information in the next superframe.
本实施例所述的信息发送方法基于资源协商进行，可以很好的解决现有技术中设备之间竞争资源导致的信息发送效率较低的问题，并且因为前述的资源协商基于设备自身所申请的资源进行，也能够使得信息发送过程相对简单，提高了设备之间信息发送的效率。The information sending method described in this embodiment is based on resource negotiation, which can well solve the problem of low information sending efficiency caused by competition for resources between devices in the prior art, and because the aforementioned resource negotiation is based on the resources requested by the device itself resources, it can also make the information sending process relatively simple, and improve the efficiency of information sending between devices.
需要说明的是，对于前述的各方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本发明并不受所描述的动作顺序的限制，因为依据本发明，某些步骤可以采用其他顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定是本发明所必须的。It should be noted that for the foregoing method embodiments, for the sake of simple description, they are expressed as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described action sequence. Because of the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.
与上述本发明实施例所提供的设备发现方法相对应，参见图6，本发明实施例还提供了一种设备实施例的结构示意图，所述设备具体可以包括：Corresponding to the device discovery method provided by the above-mentioned embodiment of the present invention, referring to FIG. 6 , the embodiment of the present invention also provides a schematic structural diagram of a device embodiment, and the device may specifically include:
第二接收模块601，用于接收参与所述D2D通信的其他设备发送的第一设备发现信标帧，所述第一设备发现信标帧的参数包括：第一通信对端设备标识；所述第一通信对端设备标识不为空时表示所述其他设备在参与所述接收设备的设备发现过程，不为空的所述第一通信对端设备标识为所述接收设备的标识；以及The second receiving module 601 is configured to receive a first device discovery beacon frame sent by other devices participating in the D2D communication, where the parameters of the first device discovery beacon frame include: a first communication peer device identifier; the When the first communication peer device identifier is not empty, it means that the other device is participating in the device discovery process of the receiving device, and the first communication peer device identifier that is not empty is the identifier of the receiving device; and
发现模块602，用于依据所述第一设备发现信标帧中的第一通信对端设备标识实现对所述其他设备的发现。The discovery module 602 is configured to realize the discovery of the other device according to the first communication peer device identifier in the first device discovery beacon frame.
在所述主从通信设备标识为空的情况下，所述发现模块602具体可以用于：通过接收所述第一设备发现信标帧实现对所述其他设备的发现。In the case that the master-slave communication device identifier is empty, the discovery module 602 may specifically be configured to: discover the other devices by receiving the first device discovery beacon frame.
在实际应用中，所述发现模块602可以包括：In practical applications, the discovery module 602 may include:
判断子模块701，用于判断是否曾经向所述其他设备发送过第二设备发现信标帧；A judging submodule 701, configured to judge whether a second device discovery beacon frame has ever been sent to the other device;
返回子模块702，用于在所述判断模块的结果为否的情况下，向所述其他设备返回第三设备发现信标帧，以实现所述其他设备对所述接收设备的发现，其中，所述第三设备发现信标帧中的第二通信对端设备标识为所述其他设备的标识；Return submodule 702, configured to return a third device discovery beacon frame to the other device when the result of the judging module is negative, so as to realize the discovery of the receiving device by the other device, wherein, The third device discovers that the second communication peer device identifier in the beacon frame is the identifier of the other device;
发现子模块703，用于在所述判断模块的结果为是的情况下，直接依据所述第一设备发现信标帧实现对所述其他设备的发现。The discovery submodule 703 is configured to realize the discovery of the other devices directly according to the discovery beacon frame of the first device when the result of the judging module is yes.
本实施例所述的设备进行发现时发送的设备发送信标帧，还包括了主从通信设备标识和通信对端设备标识，用于表示当前进行设备发现的设备是主设备和从设备，以及通过通信对端设备标识的设置也能够直接进行设备发现过程，因此与现有技术中的设备发现方法，为下一步的资源协商过程可以节省出时间，从而在后续进行资源协商时提高效率。The beacon frame sent by the device when the device in this embodiment discovers also includes a master-slave communication device identifier and a communication peer device identifier, which are used to indicate that the device currently performing device discovery is a master device and a slave device, and The device discovery process can also be directly performed by setting the communication peer device identifier, so compared with the device discovery method in the prior art, time can be saved for the next resource negotiation process, thereby improving efficiency in the subsequent resource negotiation.
参考图8所示，为与设备发现方法相对应的设备实施例2的结构示意图，本实施例所述的设备具体可以包括：Referring to FIG. 8 , which is a schematic structural diagram of a device embodiment 2 corresponding to a device discovery method, the device described in this embodiment may specifically include:
扫描模块801，用于至少扫描一个信标周期。The scanning module 801 is configured to scan at least one beacon period.
第一选择模块802，用于在扫描到信标周期的情况下，在所述信标周期中选择一个空闲的信标时隙。The first selection module 802 is configured to select an idle beacon time slot in the beacon period when the beacon period is scanned.
第二选择模块803，用于在没有扫描到所述信标周期的情况下，在所述信标周期内任意选择一个信标时隙。The second selection module 803 is configured to arbitrarily select a beacon time slot within the beacon period when the beacon period is not scanned.
发送信标帧模块804，用于在所述信标时隙上向当前物联网中的其他设备发送设备发现信标帧；或者，在所述任意选择的信标时隙上向当前物联网中的其他设备发送设备发现信标帧。Sending a beacon frame module 804, configured to send a device discovery beacon frame to other devices in the current Internet of Things on the beacon time slot; or, send a device discovery beacon frame to the current Internet of Things on the randomly selected beacon time slot The other devices send Device Discovery Beacon frames.
第二接收模块601，用于接收参与所述D2D通信的其他设备发送的第一设备发现信标帧，所述第一设备发现信标帧的参数包括：第一通信对端设备标识；所述第一通信对端设备标识不为空时表示所述其他设备在参与所述接收设备的设备发现过程，不为空的所述第一通信对端设备标识为所述接收设备的标识。The second receiving module 601 is configured to receive a first device discovery beacon frame sent by other devices participating in the D2D communication, where the parameters of the first device discovery beacon frame include: a first communication peer device identifier; the When the first communication peer device identifier is not empty, it means that the other device is participating in the device discovery process of the receiving device, and the first communication peer device identifier that is not empty is the identifier of the receiving device.
发现模块602，用于依据所述第一设备发现信标帧中的第一通信对端设备标识实现对所述其他设备的发现。The discovery module 602 is configured to realize the discovery of the other device according to the first communication peer device identifier in the first device discovery beacon frame.
在所述接收设备为从设备，且所述从设备未完成与当前D2D的同步的情况下，还可以包括：In the case that the receiving device is a slave device, and the slave device has not completed synchronization with the current D2D, it may further include:
同步模块805，用于依据所述设备发现信标帧实现与所述其他设备的同步。A synchronization module 805, configured to realize synchronization with the other devices according to the device discovery beacon frame.
在所述设备发现信标帧的参数还包括信标帧可用资源位置的情况下，所述信标帧可用资源位置用于指示当前可以发送信标帧的资源；则所述返回子模块可以包括：When the device discovers that the parameters of the beacon frame also include the available resource position of the beacon frame, the available resource position of the beacon frame is used to indicate the resources that can currently send the beacon frame; then the returning submodule may include :
获取资源位置子模块806，用于依据监听的其他设备发送的第一设备发现信标帧，获取可以发送第三设备发现信标帧的信标帧可用资源的位置；Obtaining a resource location submodule 806, configured to obtain the location of available resources of a beacon frame that can send a third device discovery beacon frame according to the first device discovery beacon frame sent by other monitored devices;
发送子模块807，用于在信标帧可用资源中未被使用的资源位置上，选择空闲时隙发送所述第三设备发现信标帧。The sending submodule 807 is configured to select an idle time slot at an unused resource position in the available resources of the beacon frame to send the third device discovery beacon frame.
在本实施例中，当前设备在发送设备发现信标帧之前先进行扫描，并且能够实现与其他设备的同步，以及还可以在实现对其他设备进行发现的基础上，向其他设备发送设备发现信标帧以实现其他设备对自己的发现。In this embodiment, the current device scans before sending the device discovery beacon frame, and can realize synchronization with other devices, and can also send a device discovery signal to other devices on the basis of realizing discovery of other devices. Frames are used to enable other devices to discover themselves.
与已经互相发现的设备之间进行的资源申请方法相对应，参考图9所示，本发明实施例还提供了另一种设备的结构示意图，该设备为参与物联网D2D通信已经发现其他设备的当前设备，具体可以包括：Corresponding to the resource application method between devices that have discovered each other, as shown in FIG. 9 , an embodiment of the present invention also provides a schematic structural diagram of another device, which is a device that has discovered other devices that have participated in D2D communication in the Internet of Things. Current equipment, which may specifically include:
第一接收模块901，用于接收已经发现的其他设备在当前超帧发送的资源需求信息，所述资源需求信息包括所述其他设备的业务优先级、所述其他设备信标所在的信标时隙和/或所述其他设备申请资源的数量；The first receiving module 901 is configured to receive the resource requirement information sent by other discovered devices in the current superframe, the resource requirement information includes the service priority of the other device, the beacon hour of the other device's beacon slots and/or the number of other devices applying for resources;
其中，所述第一接收模块901，具体可以包括：接收子模块，用于接收资源申请信标帧或信息发送知会信标帧；获取资源数量子模块，用于从所述资源申请信标帧或信息发送知会信标帧中获取所述资源需求信息中所述其他设备申请资源的数量。Wherein, the first receiving module 901 may specifically include: a receiving submodule, configured to receive a resource application beacon frame or an information transmission notification beacon frame; a resource quantity acquisition submodule, configured to apply for a beacon frame from the resource The frame or information sending notifies the number of resources applied for by the other device in the resource requirement information acquired in the beacon frame.
计算模块902，用于依据所述其他设备的业务优先级、所述其他设备信标所在的信标时隙和/或所述其他设备申请资源的数量，计算所述设备能够分配到的资源位置。Calculation module 902, configured to calculate resource positions that can be allocated to the device according to the service priority of the other device, the beacon time slot where the other device beacons are located, and/or the number of resources applied for by the other device .
所述计算模块902具体可以通过接收包括所申请资源的数量的资源申请信标帧，或者通过接收包括所申请资源的数量的信息发送信标帧的方式，获取所述资源需求信息中的所申请资源的数量。Specifically, the calculation module 902 may obtain the requested resource request information in the resource requirement information by receiving a resource application beacon frame including the requested resource quantity, or by receiving information including the requested resource quantity and sending a beacon frame. the number of resources.
在实际应用中，所述计算模块902可以包括：In practical applications, the calculation module 902 may include:
排序子模块1001，用于按照所述其他设备的业务优先级、和/或所述其他设备信标所在的信标时隙和/或所述其他设备申请资源的数量对有资源申请需求的设备进行排序；所述有资源申请需求的设备包括所述当前设备和所述其他设备。The sorting sub-module 1001 is configured to sort the devices that have resource application requirements according to the service priority of the other devices, and/or the beacon time slot where the other device beacons are located and/or the number of resources that the other devices apply for Sorting; the devices that need resource application include the current device and the other devices.
计算子模块1002，用于按照所述排序的结果计算所述当前设备能够分配到的资源。The calculation submodule 1002 is configured to calculate the resources that can be allocated to the current device according to the sorting result.
在本实施例中，因为当前设备基于自己及相邻设备的资源申请情况进行的资源协商，所以在资源申请过程中不会与其他设备产生冲突，可以提高设备之间资源协商的效率。In this embodiment, because the current device performs resource negotiation based on the resource application status of itself and neighboring devices, there will be no conflict with other devices during the resource application process, which can improve the efficiency of resource negotiation between devices.
与前述的在已经发现的设备之间进行的信息发送方法相对应，参考图11，本发明实施例还提供了又一种设备实施例的结构示意图，具体可以包括：Corresponding to the aforementioned method for sending information between discovered devices, referring to FIG. 11 , the embodiment of the present invention also provides a schematic structural diagram of another device embodiment, which may specifically include:
第一接收模块901，用于接收已经发现的其他设备在当前超帧发送的资源需求信息，所述资源需求信息包括所述其他设备的业务优先级、所述其他设备信标所在的信标时隙和/或所述其他设备申请资源的数量；The first receiving module 901 is configured to receive the resource requirement information sent by other discovered devices in the current superframe, the resource requirement information includes the service priority of the other device, the beacon hour of the other device's beacon slots and/or the number of other devices applying for resources;
计算模块902，用于依据所述其他设备的业务优先级、所述其他设备信标所在的信标时隙和/或所述其他设备申请资源的数量，计算所述设备能够分配到的资源位置。Calculation module 902, configured to calculate resource positions that can be allocated to the device according to the service priority of the other device, the beacon time slot where the other device beacons are located, and/or the number of resources applied for by the other device .
发送模块1101，用于在所述当前超帧的下一个超帧中，向所述其他设备发送信息发送知会信标帧，所述信息发送知会信标帧包括信息发送的位置，所述信息发送的位置用于指示所述当前设备当前使用的资源位置。The sending module 1101 is configured to send an information sending notification beacon frame to the other device in the next superframe of the current superframe, the information sending notification beacon frame includes the location of information sending, the The location where the information is sent is used to indicate the resource location currently used by the current device.
本实施例所述的设备基于前述的资源协商进行信息发送，可以很好的解决现有技术中设备之间竞争资源导致的信息发送效率较低的问题，并且因为前述的资源协商基于设备自身所申请的资源进行，也能够使得信息发送过程相对简单，提高了设备之间信息发送的效率。The device described in this embodiment sends information based on the aforementioned resource negotiation, which can well solve the problem of low information sending efficiency caused by competition for resources between devices in the prior art, and because the aforementioned resource negotiation is based on the device itself Applying for resources can also make the information sending process relatively simple and improve the efficiency of information sending between devices.
需要说明的是，本说明书中的各个实施例均采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似的部分互相参见即可。对于设备类实施例而言，由于其与方法实施例基本相似，所以描述的比较简单，相关之处参见方法实施例的部分说明即可。It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. For the same and similar parts in each embodiment, refer to each other, that is, Can. As for the device embodiment, because it is basically similar to the method embodiment, the description is relatively simple, and for the related parts, please refer to the part of the description of the method embodiment.
还需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个......”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。It should also be noted that in this document, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements , but also includes other elements not expressly listed, or also includes elements inherent in such process, method, article or equipment. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.
以上对本发明实施例所提供的一种D2D通信中的资源协商方法及设备进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明实施例的方法及其思想；同时，对于本领域的一般技术人员，依据本发明实施例的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。The resource negotiation method and equipment in D2D communication provided by the embodiments of the present invention are described above in detail. In this paper, specific examples are used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for To help understand the methods and ideas of the embodiments of the present invention; at the same time, for those of ordinary skill in the art, according to the ideas of the embodiments of the present invention, there will be changes in the specific implementation and application scope. In summary, The contents of this description should not be construed as limiting the present invention.
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| CN201210026398.7ACN102547871B (en) | 2012-02-07 | 2012-02-07 | Resource negotiation method and apparatus in a kind of D2D communication |
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| CN201210026398.7ACN102547871B (en) | 2012-02-07 | 2012-02-07 | Resource negotiation method and apparatus in a kind of D2D communication |
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| CN201210026398.7AActiveCN102547871B (en) | 2012-02-07 | 2012-02-07 | Resource negotiation method and apparatus in a kind of D2D communication |
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