同步信号转发方法和用户设备 Synchronization signal forwarding method and user equipment
技术领域 本发明涉及通信技术， 尤其涉及一种同歩信号转发方法和用户设备。 背景技术 移动通信系统发展带来带宽需求的不断加大， 带宽的分配变得越来越拥 挤， 由于可用于移动通信的频谱资源十分有限， 所以可分配到的带宽需求满 足不了实际系统的需求， 端到端 (Device-to-Device， 简称 D2D)通信技术应运 而生， D2D通信是指用户设备间不经过基站中转， 而进行的直接通信， 并可 以在小区网络的控制下与小区用户共享资源，因此频谱的利用率将得到提升， 还可以有效减轻蜂窝网的负担。Technical Field The present invention relates to communication technologies, and in particular to a synchronization signal forwarding method and user equipment. Background of the Invention The development of mobile communication systems has brought about increasing bandwidth requirements, and bandwidth allocation has become more and more crowded. Since the spectrum resources available for mobile communications are very limited, the allocated bandwidth requirements cannot meet the actual system requirements. End-to-end (Device-to-Device, D2D for short) communication technology emerges as the times require. D2D communication refers to direct communication between user equipment without transiting through the base station, and can share resources with community users under the control of the community network. , so the utilization rate of the frequency spectrum will be improved, and the burden of the cellular network can also be effectively reduced.
用户设备进行 D2D通信就需要同歩源为通信的用户设备提供一个统一的 定时， 但同歩源能覆盖到的范围较小， 就需要用户设备来转发同歩信号。 用 户设备一般转发能够接收到的最高精度的同歩信号， 经转发后的同歩信号的 精度低于接收到的精度。 然而， 当某用户设备接收到两个以上不同精度的同 歩信号之后， 如果同歩信号之间存在干扰， 则接收到这些同歩信号的用户设 备无法获得及转发同歩信号。 发明内容 本发明实施例提供一种同歩信号转发方法和用户设备， 以解决不同精度 的同歩信号之间相互干扰导致用户设备无法获得同歩信号的问题。 When the user equipment performs D2D communication, the synchronization source needs to provide a unified timing for the communicating user equipment, but the range covered by the synchronization source is small, and the user equipment is required to forward the synchronization signal. The user equipment generally forwards the synchronization signal with the highest precision that can be received, and the precision of the forwarded synchronization signal is lower than that of the received one. However, after a certain user equipment receives two or more synchronization signals with different precisions, if there is interference between the synchronization signals, the user equipment receiving these synchronization signals cannot obtain and forward the synchronization signals. SUMMARY OF THE INVENTION Embodiments of the present invention provide a synchronization signal forwarding method and user equipment, so as to solve the problem that the synchronization signal cannot be obtained by the user equipment due to mutual interference between synchronization signals with different precisions.
本发明第一方面提供了一种同歩信号转发方法， 包括： The first aspect of the present invention provides a synchronization signal forwarding method, including:
用户设备接收同歩信号； The user equipment receives the synchronization signal;
所述用户设备根据所述同歩信号占用的资源确定所述同歩信号的精度； 所述用户设备根据所述同歩信号的精度确定中转同歩信号的精度； 所述用户设备根据所述中转同歩信号的精度确定所述中转同歩信号占用 的资源； The user equipment determines the accuracy of the synchronization signal according to the resource occupied by the synchronization signal; the user equipment determines the accuracy of the relay synchronization signal according to the accuracy of the synchronization signal; the user equipment determines the accuracy of the relay synchronization signal according to the relay The accuracy of the synchronization signal determines the resource occupied by the relay synchronization signal;
所述用户设备根据所述中转同歩信号占用的资源发送所述中转同歩信 号。 在第一方面的第一种可能实现方式中， 所述用户设备根据所述同歩信号 占用的资源确定所述同歩信号的精度包括： The user equipment sends the relay synchronization signal according to the resources occupied by the relay synchronization signal. In a first possible implementation manner of the first aspect, determining, by the user equipment, the accuracy of the synchronization signal according to resources occupied by the synchronization signal includes:
所述用户设备根据所述同歩信号使用正交频分复用 OFDM符号的个数确 定所述同歩信号的精度， 其中不同精度的同歩信号占用不同的资源。 The user equipment determines the precision of the synchronization signal by using the number of OFDM symbols of the synchronization signal according to the synchronization signal, where synchronization signals with different precisions occupy different resources.
结合第一方面的第一种可能实现方式， 在第一方面的第二种可能实现方 式中， 所述不同精度的同歩信号占用不同的资源， 包括： With reference to the first possible implementation of the first aspect, in the second possible implementation of the first aspect, the synchronization signals with different precision occupy different resources, including:
不同精度的同歩信号占用不同个数的 OFDM符号。 Synchronization signals with different precisions occupy different numbers of OFDM symbols.
结合第一方面的第二种可能实现方式， 在第一方面的第三种可能实现方 式中， 所述不同精度的同歩信号占用不同个数的 OFDM符号， 包括： 高精度 的同歩信号占用的 OFDM符号的个数多于低精度的同歩信号占用的 OFDM 符号的个数。 With reference to the second possible implementation of the first aspect, in the third possible implementation of the first aspect, the synchronization signals with different precisions occupy different numbers of OFDM symbols, including: high-precision synchronization signals occupy The number of OFDM symbols is more than the number of OFDM symbols occupied by low-precision synchronization signals.
结合第一方面的第三种可能实现方式， 在第一方面的第四种可能实现方 式中， 当某个 OFDM符号既属于到达的同歩信号占用的资源集， 又属于中 转同歩信号占用的资源集时， 所述中转同歩信号在所述 OFDM 符号上发 送的内容与接收到的内容相同。 With reference to the third possible implementation of the first aspect, in the fourth possible implementation of the first aspect, when a certain OFDM symbol belongs to both the resource set occupied by the arriving synchronization signal and the resource set occupied by the transit synchronization signal When the resources are set, the content sent by the relay synchronization signal on the OFDM symbol is the same as the received content.
结合第一方面、 第一方面的第一至第四种任意一种可能的实现方式， 在 第一方面的第五种可能实现方式中， 所述用户设备根据所述中转同歩信号占 用的资源发送所述中转同歩信号之后， 还包括： With reference to the first aspect and any one of the first to fourth possible implementation manners of the first aspect, in the fifth possible implementation manner of the first aspect, the resource occupied by the relay synchronization signal according to the user equipment After sending the relay synchronization signal, it also includes:
所述用户设备随机变换发送中转同歩信号为接收同歩信号， 并对接收到 的精度最高的同歩信号进行转发。 The user equipment randomly transforms the transmission and transfer synchronization signal into a reception synchronization signal, and forwards the received synchronization signal with the highest precision.
本发明第二方面提供了一种同歩信号转发装置， 包括： A second aspect of the present invention provides a synchronization signal forwarding device, including:
接收模块， 用于用户设备接收同歩信号； The receiving module is used for the user equipment to receive the synchronization signal;
确定模块， 用于根据接收模块接收到的所述同歩信号占用的资源确定所 述同歩信号的精度， 根据所述同歩信号的精度确定中转同歩信号的精度， 根 据所述中转同歩信号的精度确定所述中转同歩信号占用的资源； a determining module, configured to determine the accuracy of the synchronization signal according to the resource occupied by the synchronization signal received by the receiving module, determine the accuracy of the relay synchronization signal according to the accuracy of the synchronization signal, and determine the accuracy of the relay synchronization signal according to the accuracy of the relay synchronization signal. The accuracy of the signal determines the resource occupied by the relay synchronization signal;
发送模块， 用于根据所述确定模块确定的所述中转同歩信号占用的资源 发送所述中转同歩信号。 A sending module, configured to send the relay synchronization signal according to the resource occupied by the relay synchronization signal determined by the determination module.
在第二方面的第一种可能实现方式中， 所述确定模块具体用于： 根据所述同歩信号使用正交频分复用的 OFDM符号的个数确定所述同歩 信号的精度， 且不同精度的同歩信号占用不同的资源。 在第二方面的第二种可能实现方式中， 所述确定模块具体用于： 确定不同精度的同歩信号占用不同个数的 OFDM符号。 In a first possible implementation manner of the second aspect, the determining module is specifically configured to: determine the precision of the synchronization signal according to the number of OFDM symbols that use orthogonal frequency division multiplexing for the synchronization signal, and Synchronization signals with different precisions occupy different resources. In a second possible implementation manner of the second aspect, the determining module is specifically configured to: determine that synchronization signals with different precisions occupy different numbers of OFDM symbols.
结合第二方面的第二种可能实现方式中， 在第二方面的第三种可能实现 方式中， 所述确定模块确定的精度越高的同歩信号占用的 OFDM符号个数越 多， 精度越低的同歩信号占用的 OFDM符号个数越少。 In conjunction with the second possible implementation of the second aspect, in the third possible implementation of the second aspect, the synchronization signal determined by the determination module with higher precision occupies more OFDM symbols and has a higher precision. The lower the number of OFDM symbols occupied by the synchronization signal is, the smaller the number is.
结合第二方面的第三种可能实现方式中， 在第二方面的第四种可能实现 方式中， 所述确定模块具体用于， 当某个 OFDM符号既属于到达的同歩信 号占用的资源集， 又属于中转同歩信号占用的资源集时， 所述中转同歩信 号在所述 OFDM符号上发送的内容与接收到的内容相同。 In conjunction with the third possible implementation of the second aspect, in the fourth possible implementation of the second aspect, the determining module is specifically configured to, when a certain OFDM symbol belongs to the resource set occupied by the arriving synchronization signal , and belong to the resource set occupied by the relay synchronization signal, the content sent by the relay synchronization signal on the OFDM symbol is the same as the received content.
结合第二方面、 第二方面第一至第四种任意一种可能的实现方式， 所述 装置还包括： In combination with the second aspect and any one of the first to fourth possible implementation manners of the second aspect, the device further includes:
转发模块， 用于根据所述发送模块根据所述中转同歩信号占用的资源发 送所述中转同歩信号之后， 随机变换发送中转同歩信号为接收同歩信号， 并 对接收模块能够接收到的精度最高的同歩信号进行转发。 The forwarding module is configured to randomly convert the transmitted forwarded synchronization signal into a received synchronized signal after sending the forwarded synchronization signal according to the resources occupied by the forwarded synchronized signal by the sending module, and to receive the received synchronization signal by the receiving module The synchronization signal with the highest precision is forwarded.
本发明第三方面提供了一种用户设备， 包括： A third aspect of the present invention provides a user equipment, including:
接收器， 用于接收同歩信号； a receiver, for receiving a synchronization signal;
处理器， 用于根据接收器接收到的所述同歩信号占用的资源确定所述同 歩信号的精度， 根据所述同歩信号的精度确定中转同歩信号的精度， 根据所 述中转同歩信号的精度确定所述中转同歩信号占用的资源； a processor, configured to determine the accuracy of the synchronization signal according to the resources occupied by the synchronization signal received by the receiver, determine the accuracy of the relay synchronization signal according to the accuracy of the synchronization signal, and determine the accuracy of the relay synchronization signal according to the accuracy of the relay synchronization The accuracy of the signal determines the resource occupied by the relay synchronization signal;
发送器， 用于根据所述处理器确定的所述中转同歩信号占用的资源发送 所述中转同歩信号。 A transmitter, configured to send the relay synchronization signal according to the resource occupied by the relay synchronization signal determined by the processor.
在第三方面的第一种可能实现方式中， 所述处理器具体用于： 根据所述 同歩信号使用正交频分复用 OFDM符号的个数确定所述同歩信号的精度， 且 不同精度的同歩信号占用不同的资源。 In a first possible implementation manner of the third aspect, the processor is specifically configured to: determine the precision of the synchronization signal by using the number of OFDM symbols of the synchronization signal according to the synchronization signal, and different The synchronization signal of the precision occupies different resources.
在第三方面的第二种可能实现方式中， 所述处理器具体用于： In a second possible implementation manner of the third aspect, the processor is specifically configured to:
确定不同精度的同歩信号占用不同个数的 OFDM符号。 It is determined that synchronization signals with different precisions occupy different numbers of OFDM symbols.
结合第三方面的第二种可能实现方式， 在第三方面的第三种可能实现方 式中， 所述处理器确定的精度越高的同歩信号占用的 OFDM符号个数越多， 精度越低的同歩信号占用的 OFDM符号个数越少。 With reference to the second possible implementation of the third aspect, in the third possible implementation of the third aspect, the higher the number of OFDM symbols occupied by the synchronization signal determined by the processor with higher accuracy, the lower the accuracy The number of OFDM symbols occupied by the synchronization signal is less.
结合第三方面的第三种可能实现方式， 在第三方面的第四种可能实现方 式种， 所述处理器具体用于， 当某个 OFDM符号既属于接收的同歩信号占 用的资源集， 又属于中转同歩信号占用的资源集时， 所述中转同歩信号在 所述 OFDM符号上发送的内容与接收到的内容相同。 In combination with the third possible implementation of the third aspect, the fourth possible implementation of the third aspectIn this way, the processor is specifically configured to, when a certain OFDM symbol belongs to both the resource set occupied by the received synchronization signal and the resource set occupied by the relay synchronization signal, the relay synchronization signal in the OFDM What is sent on the symbol is the same as what is received.
结合第三方面、 第三方面的第一至第四种任意一种可能的实现， 在第三 方面的第五种可能实现方式中， 所述发送器， 还用于发送所述中转同歩信号 之后， 随机变换发送中转同歩信号为接收同歩信号， 并对接收器能够接收到 的精度最高的同歩信号进行转发。 With reference to the third aspect and any one of the first to fourth possible implementations of the third aspect, in a fifth possible implementation of the third aspect, the transmitter is further configured to send the transit synchronization signal Afterwards, randomly transform the sending and relaying synchronization signal into a receiving synchronization signal, and forward the synchronization signal with the highest accuracy that the receiver can receive.
本发明实施例提供一种同歩信号转发方法和用户设备，用户设备根据接收 到的同歩信号所占用的资源来确定中转同歩信号占用的资源， 然后用户设备 发送中转同歩信号。其中， 同歩信号所占用的资源可以用于标识同歩信号的 精度， 在接收到的同歩信号精度确定后， 用户设备可以根据该精度确定所 中转的同歩信号的精度并且中转该同歩信号。 使得当用户设备接收到两个 以上不同精度的同歩信号时， 仍然能够保证获得同歩信号， 保证了用户设备 的正常通信。 附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案， 下面将对 实施例或现有技术描述中所需要使用的附图作一简单地介绍， 显而易见 地， 下面描述中的附图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。 Embodiments of the present invention provide a synchronization signal forwarding method and user equipment. The user equipment determines the resources occupied by the relay synchronization signal according to the resources occupied by the received synchronization signal, and then the user equipment sends the relay synchronization signal. Wherein, the resource occupied by the synchronization signal may be used to identify the accuracy of the synchronization signal. After the accuracy of the received synchronization signal is determined, the user equipment may determine the accuracy of the relayed synchronization signal according to the accuracy and relay the synchronization signal. Signal. In this way, when the user equipment receives more than two synchronization signals with different precisions, it can still ensure that the synchronization signal is obtained, thereby ensuring the normal communication of the user equipment. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions in 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, in the following description The accompanying drawings are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort.
图 1为本发明一个实施例提供的同歩信号转发方法的流程图； FIG. 1 is a flowchart of a synchronization signal forwarding method provided by an embodiment of the present invention;
图 2 为本发明另一个实施例提供的同歩信号转发方法的同歩信号表示 图； Fig. 2 is a synchronous signal representation diagram of a synchronous signal forwarding method provided by another embodiment of the present invention;
图 3为本发明另一个实施例提供的同歩信号转发方法的场景图； 图 4为本发明另一个实施例提供的同歩信号转发方法的场景图； 图 5为本发明另一个实施例提供的同歩信号转发装置的结构示意图； 图 6为本发明另一个实施例提供的用户设备的结构示意图； Fig. 3 is a scene diagram of a synchronization signal forwarding method provided by another embodiment of the present invention; Fig. 4 is a scene diagram of a synchronization signal forwarding method provided by another embodiment of the present invention; Fig. 5 is provided by another embodiment of the present invention A schematic structural diagram of a synchronization signal forwarding device; FIG. 6 is a schematic structural diagram of a user equipment provided in another embodiment of the present invention;
图 7为本发明另一个实施例提供的用户设备的结构示意图。 具体实施方式 Fig. 7 is a schematic structural diagram of user equipment provided by another embodiment of the present invention.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 technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.
本申请中涉及的用户设备， 可以是无线终端， 无线终端可以是指向用 户提供语音和 /或数据连通性的设备， 具有无线连接功能的手持式设备、或 连接到无线调制解调器的其他处理设备。 无线终端可以是移动终端， 如移 动电话 （或称为"蜂窝"电话） 和具有移动终端的计算机， 例如， 可以是便 携式、 袖珍式、 手持式、 计算机内置的或者车载的移动装置。 例如， 个人 通信业务（PCS , Personal Communication Service ) 电话、 无绳电话、 会话 发起协议 （SIP ) 话机、 无线本地环路 （WLL， Wireless Local Loop ) 站、 个人数字助理 （PDA, Personal Digital Assistant) 等设备。 无线终端也可 以称为系统、 订户单元 （Subscriber Unit) 、 订户站 （ Subscriber Station) ， 移动站（Mobile Station) 、 移动台 （Mobile ) 、 远程站（Remote Station) 、 接入点（Access Point)、远程终端（ Remote Terminal )、接入终端（Access Terminal ) 、 用户终端 ( User Terminal) 、 用户代理 ( User Agent) 、 用户 设备 （User Device ) 、 或用户装备 ( User Equipment) 。 The user equipment involved in this application may be a wireless terminal, and the wireless terminal may be a device that provides voice and/or data connectivity to the user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. The wireless terminal can be a mobile terminal, such as a mobile phone (or called a "cellular" phone) and a computer with a mobile terminal, such as a portable, pocket, hand-held, computer built-in or vehicle-mounted mobile device. For example, personal communication service (PCS, Personal Communication Service) telephone, cordless telephone, session initiation protocol (SIP) telephone, wireless local loop (WLL, Wireless Local Loop) station, personal digital assistant (PDA, Personal Digital Assistant) and other equipment . The wireless terminal may also be called a system, a subscriber unit (Subscriber Unit), a subscriber station (Subscriber Station), a mobile station (Mobile Station), a mobile station (Mobile), a remote station (Remote Station), an access point (Access Point), Remote Terminal (Remote Terminal), Access Terminal (Access Terminal), User Terminal (User Terminal), User Agent (User Agent), User Equipment (User Device), or User Equipment (User Equipment).
另外， 本文中术语"系统"和"网络"在本文中常被可互换使用。 本文中 术语"和 /或"， 仅仅是一种描述关联对象的关联关系， 表示可以存在三种关 系， 例如， A和 /或 B， 可以表示： 单独存在 A， 同时存在 A和 B， 单独存 在 B这三种情况。另外，本文中字符" /"，一般表示前后关联对象是一种"或" 的关系。 Additionally, the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is only an association relationship describing associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate: A exists alone, A and B exist simultaneously, and A exists alone B these three situations. In addition, the character "/" in this article generally indicates that the associated objects are an "or" relationship.
图 1为本发明一个实施例提供的同歩信号转发方法的流程图， 如图 1所 示， 该方法包括： FIG. 1 is a flowchart of a synchronization signal forwarding method provided by an embodiment of the present invention. As shown in FIG. 1, the method includes:
歩骤 101 : 用户设备接收同歩信号； Step 101: the user equipment receives a synchronization signal;
其中， 用户设备接收基站或其他用户设备发送的同歩信号。 Wherein, the user equipment receives the synchronization signal sent by the base station or other user equipment.
歩骤 102: 用户设备根据同歩信号占用的资源确定同歩信号的精度。 歩骤 103 : 用户设备根据同歩信号的精度确定中转同歩信号的精度。 歩骤 104: 用户设备根据中转同歩信号的精度确定中转同歩信号占用的 资源。 Step 102: The user equipment determines the accuracy of the synchronization signal according to the resources occupied by the synchronization signal. Step 103: The user equipment determines the precision of the relayed synchronization signal according to the precision of the synchronization signal. Step 104: The user equipment determines the space occupied by the relay synchronization signal according to the accuracy of the relay synchronization signalresource.
其中， 用户设备根据同步信号使用的正交频分复用 （Orthogonal Frequency-Division Multiple, 简称 OFDM) 符号的个数确定同歩信号的精 度， 且不同精度的同歩信号占用不同的资源， 即不同精度的同歩信号占用 不同个数的 OFDM符号， 作为一种可行实施方式， 高精度的同歩信号占用 的 OFDM符号的个数多于低精度的同歩信号占用的 OFDM符号的个数。 Wherein, the user equipment determines the precision of the synchronization signal according to the number of Orthogonal Frequency-Division Multiplexing (OFDM) symbols used by the synchronization signal, and synchronization signals with different precisions occupy different resources, that is, different Synchronization signals with high precision occupy different numbers of OFDM symbols. As a feasible implementation manner, the number of OFDM symbols occupied by high-precision synchronization signals is greater than the number of OFDM symbols occupied by low-precision synchronization signals.
可选的， 如果某个 OFDM 符号既属于接收到的同歩信号占用的资源 集， 又属于中转同歩信号占用的资源集， 那么中转同歩信号在这个 OFDM 符号上的内容与接收到的同歩信号相同。 其中， 资源集为同歩信号所占用 的资源的总称。 具体的， 用户设备根据接收到的同歩信号占用的资源， 即 OFDM符号的个数确定同歩信号的精度，进而根据所确定的同歩信号的精 度确定中转同歩信号的精度， 其中， 中转同歩信号的精度低于接收到的同 歩信号的精度， 最后根据确定的中转同歩信号的精度确定中转同歩信号所 占用的资源， 即中转同歩信号所包含的 OFDM符号的个数。 Optionally, if a certain OFDM symbol belongs to both the resource set occupied by the received synchronization signal and the resource set occupied by the relay synchronization signal, then the content of the relay synchronization signal on this OFDM symbol is the same as that of the received synchronization signal. The step signal is the same. Wherein, the resource set is a general term for the resources occupied by the synchronization signal. Specifically, the user equipment determines the precision of the synchronization signal according to the resource occupied by the received synchronization signal, that is, the number of OFDM symbols, and then determines the precision of the relayed synchronization signal according to the determined precision of the synchronized signal, wherein, the relayed The accuracy of the synchronization signal is lower than the accuracy of the received synchronization signal, and finally the resource occupied by the relay synchronization signal is determined according to the determined accuracy of the relay synchronization signal, that is, the number of OFDM symbols contained in the relay synchronization signal.
歩骤 105: 用户设备根据中转同歩信号占用的资源发送中转同歩信号。 本发明实施例提供的同歩信号转发方法，用户设备根据接收到的同歩信 号所占用的资源来确定中转同歩信号占用的资源， 然后用户设备发送中转同 歩信号， 其中， 所占用的资源可以用于标识同歩信号的精度， 在接收到的 同歩信号精度确定后， 用户设备可以根据该精度确定所中转的同歩信号的 精度并且中转该同歩信号。使得当用户设备接收到两个以上不同精度的同歩 信号时， 仍然能够保证获得同歩信号， 保证了用户设备的正常通信。 Step 105: The user equipment sends the relay synchronization signal according to the resources occupied by the relay synchronization signal. In the synchronization signal forwarding method provided by the embodiment of the present invention, the user equipment determines the resources occupied by the relay synchronization signal according to the resources occupied by the received synchronization signal, and then the user equipment sends the relay synchronization signal, wherein the resources occupied It may be used to identify the accuracy of the synchronization signal. After the accuracy of the received synchronization signal is determined, the user equipment may determine the accuracy of the relayed synchronization signal according to the accuracy and relay the synchronization signal. So that when the user equipment receives more than two synchronization signals with different precisions, it can still ensure that the synchronization signal is obtained, and the normal communication of the user equipment is guaranteed.
本发明另一个实施例提供的同歩信号转发方法， 本实施例提供了用户设 备在本该发送中转同歩信号时随机变换发送中转同歩信号为接收同歩信号， 以确定是否有更高精度级别的同歩信号被自己忽略。 Another embodiment of the present invention provides a synchronization signal forwarding method. This embodiment provides that the user equipment randomly converts the transmission of the transmission synchronization signal into the reception synchronization signal when the transmission transmission synchronization signal is supposed to be transmitted, so as to determine whether there is a higher precision Level sync signals are ignored by themselves.
其中， 不同精度的同歩信号使用不同级别的同歩信号表示， 或者以其他 形式表述， 只要能够区分同歩信号都是本发明所要保护的范围， 本发明包括 并不限于下述举例。 Wherein, synchronous signals with different precisions are represented by synchronous signals of different levels, or expressed in other forms, as long as the synchronous signals can be distinguished are the scope of protection of the present invention, and the present invention includes but not limited to the following examples.
例如本发明实施例中， 不同精度的同歩信号使用如下方式表述： For example, in the embodiment of the present invention, synchronization signals with different precisions are expressed in the following manner:
1级同歩信号、 2级同歩信号、 3级同歩信号 n级同歩信号来表示， 其中 1级同歩信号的精度最高。 其中，不同精度的同歩信号可以通过预设的方式保存在终端或者基站中， 本发明不对其限制。 Level 1 synchronization signal, level 2 synchronization signal, level 3 synchronization signal and level n synchronization signals, wherein the level 1 synchronization signal has the highest accuracy. Wherein, the synchronization signals with different precisions may be stored in the terminal or the base station in a preset manner, which is not limited by the present invention.
进一歩， 1级同歩信号 （最高级） 由演进型基站 （evolved Node B， 简称 eNB) 在下行频带发送， 与其它级别自然可区分， 其余级别如图 2所示， 可 以通过如下方法区分： Further, the level 1 synchronization signal (the highest level) is sent by the evolved base station (evolved Node B, eNB for short) in the downlink frequency band, which is naturally distinguishable from other levels. As shown in Figure 2, the other levels can be distinguished by the following method:
2级同歩信号使用 4个 OFDM符号； 3级同歩信号使用 3个 OFDM符号； 4级同歩信号使用 2个 OFDM符号； 5级同歩信号使用 1个 OFDM符号， 并 且每个所使用的 OFDM符号发送的信号一样， 其中， 图中每个方框表示一个 OFDM符号， 并用"发11 "表示所使用的 OFDM符号发送的内容， 其中， n可 以为 1、 2、 3、 4 。The level 2 synchronization signal uses 4 OFDM symbols; the level 3 synchronization signal uses 3 OFDM symbols; the level 4 synchronization signal uses 2 OFDM symbols; the level 5 synchronization signal uses 1 OFDM symbol, and each used The signal sent by the OFDM symbol is the same, where each box in the figure represents an OFDM symbol, and "发11 " represents the content sent by the OFDM symbol used, where n can be 1, 2, 3, or 4.
如图 3所示， 假设本实施例场景中， 包括基站 、 用户设 B、 用户设 备 C和用户设备 D， 其中， 基站 A、 用户设 B、 用户设备 C和用户设备 D 的覆盖半径均约为三角形边长的一半， 同歩信号的转发流程如下： As shown in FIG. 3, it is assumed that the scenario of this embodiment includes a base station, user equipment B, user equipment C, and user equipment D, where the coverage radii of base station A, user equipment B, user equipment C, and user equipment D are all about half of the side length of the triangle, the forwarding process of the synchronization signal is as follows:
基站 A发射 1级同歩信号，在基站 A覆盖范围内的用户设备 B在下行频 带接收到基站 A发射的同歩信号后， 判断此同歩信号为 1级同歩信号。 用户 设备 B转发此同歩信号， 被转发后的同歩信号级别低于用户设备接收到的同 歩信号的级别， 例如可以采用之前设定的如下级别中的任一种： 2级、 3级、 4级、 5级;本实施例以 2级同歩信号作为用户设备 B待发送的中转同歩信号； 位于用户设备 B发送信号覆盖范围内的用户设备 C接收到用户设备 B发 送的同歩信号， 根据同歩信号中所使用的 OFDM符号的个数判断出同歩信号 的精度为 2级， 并转发此同歩信号， 被转发后的同歩信号精度级别低于用户 设备 C接收到的同歩信号的精度级别， 例如可以采用之前设定的如下级别中 的任一种： 3级、 4级、 5级， 本实施例以 3级同歩信号作为用户设备 C待发 送的中转同歩信号，然后用户设备 C发送作为中转同歩信号的 3级同歩信号; 位于用户设备 C发送信号覆盖范围内的用户设备 D接收到用户设备 C发 送的同歩信号， 根据同歩信号中所使用的 OFDM符号的个数判断出同歩信号 的精度为 3级同歩信号， 并转发此同歩信号， 转发后的同歩信号的精度级别 低于用户设备 D接收到的同歩信号的精度级别， 例如可以采用之前设定的如 下级别中的任一种： 4级、 5级， 本实施例以 4级同歩信号作为用户设备 D 待发送的中转同歩信号； 此时， 基站 A发送 1级同歩信号， 用户设备 B转发 2级同歩信号， 用户 设备 C转发 3级同歩信号， 用户设备 D转发 4级同歩信号。 The base station A transmits a level 1 synchronization signal, and after receiving the synchronization signal transmitted by the base station A in the downlink frequency band, the user equipment B within the coverage of the base station A judges that the synchronization signal is a level 1 synchronization signal. The user equipment B forwards the synchronization signal, and the level of the forwarded synchronization signal is lower than the level of the synchronization signal received by the user equipment. For example, any of the following levels previously set may be used: level 2, level 3 , Level 4, and Level 5; in this embodiment, the level 2 synchronization signal is used as the relay synchronization signal to be sent by user equipment B; the user equipment C located within the coverage of the signal sent by user equipment B receives the synchronization signal sent by user equipment B signal, according to the number of OFDM symbols used in the synchronization signal, it is judged that the accuracy of the synchronization signal is level 2, and the synchronization signal is forwarded, and the accuracy level of the forwarded synchronization signal is lower than that received by the user equipment C The accuracy level of the synchronization signal, for example, may be any one of the following levels previously set: level 3, level 4, and level 5. In this embodiment, the synchronization signal of level 3 is used as the transit synchronization to be sent by the user equipment C. signal, and then the user equipment C sends a 3-level synchronization signal as a relay synchronization signal; the user equipment D located within the coverage of the signal sent by the user equipment C receives the synchronization signal sent by the user equipment C, and according to the synchronization signal used in the synchronization signal According to the number of OFDM symbols, it is determined that the precision of the synchronization signal is a three-level synchronization signal, and the synchronization signal is forwarded, and the precision level of the forwarded synchronization signal is lower than the precision level of the synchronization signal received by the user equipment D For example, any of the following levels previously set may be used: level 4 and level 5. In this embodiment, a synchronization signal of level 4 is used as a transit synchronization signal to be sent by user equipment D; At this time, base station A sends a level 1 synchronization signal, user equipment B forwards a level 2 synchronization signal, user equipment C forwards a level 3 synchronization signal, and user equipment D forwards a level 4 synchronization signal.
其中， 用户终端所发送的中转同歩信号的级别还可以与设备本身的硬件 条件有关系， 比如： 自身晶振较差的终端可能发送较低级别的同歩信号。 Wherein, the level of the relay synchronization signal sent by the user terminal may also be related to the hardware condition of the device itself, for example: a terminal with a poor crystal oscillator may send a synchronization signal of a lower level.
进一歩的， 如图 4所示， 对于图 3的应用场景， 还可以进一歩包括： 用 户设备 E， 其中， 用户设备 E与基站 A、 用户设 B、 用户设备 C和用户设 备 D的覆盖半径均约为三角形边长的一半， 且基站 A发送 1级同歩信号， 用 户设备 B转发 2级同歩信号， 用户设备 C转发 3级同歩信号， 用户设备 D转 发 4级同歩信号。 Further, as shown in FIG. 4, for the application scenario in FIG. 3, it may further include: user equipment E, wherein, the coverage radius of user equipment E and base station A, user equipment B, user equipment C, and user equipment D Both are about half the side length of the triangle, and base station A sends a level 1 synchronization signal, user equipment B forwards a level 2 synchronization signal, user equipment C forwards a level 3 synchronization signal, and user equipment D forwards a level 4 synchronization signal.
当用户设备 E在图中位置开机时， 它会同时接收基站 A发送的 1级同歩 信号， 用户设备 B转发 2级同歩信号、 用户设备 C转发 3级同歩信号、 用户 设备 D转发 4级同歩信号的叠加信号， 由于基站 A转发的 1级同歩信号在下 行带宽发送， 可以与用户设备 B转发 2级同歩信号、 用户设备 C转发 3级同 歩信号、 用户设备 D转发 4级同歩信号的叠加信号区分开来， 并且由于基站 A转发的 1级同歩信号的级别最高， 此时用户设备 E就会接收最高级别的 1 及同歩信号并转发， 被转发后的同歩信号的精度级别低于用户设备 E接收到 的同歩信号的精度级别， 例如可以采用之前设定的如下级别中的任一种： 2 级、 3级、 4级， 5级， 所发送的中转同歩信号的精度级别与设备 E本身的硬 件条件有关系， 比如： ： 自身晶振较差的终端可能发送较低级别的同歩信号。 本实施例以 2级同歩信号作为用户设备 E待发送的中转同歩信号， 此时， 基 站 A发送 1级同歩不信号， 用户设备 B转发 2级同歩信号， 用户设备 C转发 3级同歩信号， 用户设备 D转发 4级同歩信号， 用户设备 E转发 2级同歩信 号。 When the user equipment E is turned on at the position in the figure, it will simultaneously receive the level 1 synchronization signal sent by the base station A, the user equipment B forwards the level 2 synchronization signal, the user equipment C forwards the level 3 synchronization signal, and the user equipment D forwards the level 4 synchronization signal. The superposition signal of the level 1 synchronization signal, because the level 1 synchronization signal forwarded by the base station A is sent in the downlink bandwidth, can forward the level 2 synchronization signal with the user equipment B, the user equipment C forwards the level 3 synchronization signal, and the user equipment D forwards the level 4 synchronization signal The superposition signal of the level 1 synchronization signal can be distinguished, and since the level 1 synchronization signal forwarded by the base station A has the highest level, at this time, the user equipment E will receive the highest level 1 and the synchronization signal and forward it, and the forwarded synchronization signal The precision level of the synchronous signal is lower than the precision level of the synchronous signal received by the user equipment E, for example, any one of the following levels set before can be used: level 2, level 3, level 4, level 5, the sent The accuracy level of the relay synchronization signal is related to the hardware condition of the device E itself, for example: a terminal with a poor crystal oscillator may send a synchronization signal of a lower level. In this embodiment, the level-2 synchronization signal is used as the relay synchronization signal to be sent by the user equipment E. At this time, the base station A sends the level-1 synchronization signal, the user equipment B forwards the level-2 synchronization signal, and the user equipment C forwards the level-3 synchronization signal For the synchronization signal, the user equipment D forwards the level-4 synchronization signal, and the user equipment E forwards the level-2 synchronization signal.
由于， 同歩信号的精度级别越高， 误差越小， 从而用户设备应该优先选 择自己能够接收到的最高精度级别的同歩信号进行转发， 此时， 用户设备 D 同时处于用户设备 C和用户设备 E的覆盖范围内，而用户设备 C转发的 3级 同歩信号与用户设备 E转发的 2级同歩信号叠加后， 为 2级同歩信号， 而如 果用户设备 D—直处于转发用户设备 C发送的 3级同歩信号的状态， 就无法 接收到用户设备 E所发送的 2级同歩信号。 于是用户设备 D会误认为用户设 E所发送的只不过也是一个 3级同歩信号， 从而不会舍弃自己正在跟踪的 用户设备 C发送的 3级同歩信号转而跟踪用户设备 E发送的 2级同歩信号。 于是失去了获得更高级别同歩的机会。 Because the higher the accuracy level of the synchronization signal, the smaller the error, so the user equipment should preferentially select the synchronization signal with the highest accuracy level that it can receive for forwarding. At this time, the user equipment D is in the user equipment C and the user equipment at the same time. Within the coverage of E, and after the level 3 synchronization signal forwarded by user equipment C is superimposed on the level 2 synchronization signal forwarded by user equipment E, it is a level 2 synchronization signal, and if user equipment D is always in the forwarding position of user equipment C In the state of the sent level 3 synchronization signal, the level 2 synchronization signal sent by the user equipment E cannot be received. So the user equipment D will mistakenly believe that what the user equipment E sends is only a 3-level synchronization signal, so that it will not abandon the signal it is tracking.The level 3 synchronization signal sent by user equipment C turns to track the level 2 synchronization signal sent by user equipment E. The opportunity to obtain a higher level of synchronization is thus lost.
所以用户设备 D应该随机转发为收， 以判断是否有更高精度级别的同歩 信号。 Therefore, user equipment D should randomly forward and receive to determine whether there is a synchronization signal with a higher precision level.
当用户设备 D转发为收， 开始接收同歩信号时， 就会接收到用户设备 E 发送的 2级同歩信号， 并对此 2级同歩信号进行转发。 When the user equipment D forwards to receive and starts to receive the synchronization signal, it will receive the level 2 synchronization signal sent by the user equipment E, and forward the level 2 synchronization signal.
本发明实施例提供的同歩信号转发方法， 用户设备根据接收到的同歩 信号所占用的资源来确定中转同歩信号占用的资源， 然后用户设备发送中 转同歩信号。 其中， 所占用的资源可以用于标识同歩信号的精度， 在接收 到的同歩信号精度确定后， 用户设备可以根据该精度确定所中转的同歩信 号的精度并且中转该同歩信号。 并且， 用户设备会随机转发为收， 从而不会 忽略更高精度级别的同歩信号， 使得当用户设备接收到两个以上不同精度的 同歩信号时， 仍然能够保证获得同歩信号， 并转发更高精度的同歩信号， 保 证了用户设备的正常通信。 In the synchronization signal forwarding method provided by the embodiment of the present invention, the user equipment determines the resources occupied by the relay synchronization signal according to the resources occupied by the received synchronization signal, and then the user equipment sends the relay synchronization signal. Wherein, the occupied resources may be used to identify the accuracy of the synchronization signal, and after the accuracy of the received synchronization signal is determined, the user equipment may determine the accuracy of the relayed synchronization signal according to the accuracy and relay the synchronization signal. Moreover, the user equipment will randomly forward and receive, so as not to ignore the synchronization signal of higher precision level, so that when the user equipment receives more than two synchronization signals with different precision, it can still guarantee to obtain the synchronization signal, and forward The higher-precision synchronization signal ensures the normal communication of the user equipment.
图 5为本发明另一实施例提供的同歩信号转发装置的结构示意图， 如图 FIG. 5 is a schematic structural diagram of a synchronization signal forwarding device provided by another embodiment of the present invention, as shown in FIG.
5所示， 该装置包括： 接收模块 11、 确定模块 12和发送模块 13， 其中接收 模块， 用于用户设备接收同歩信号； 确定模块 12， 用于根据接收模块 11接 收到的同歩信号占用的资源确定同歩信号的精度， 根据同歩信号的精度确定 中转同歩信号的精度， 根据中转同歩信号的精度确定中转同歩信号占用的资 源； 发送模块 13， 用于根据确定模块 11确定的中转同歩信号占用的资源发 送中转同歩信号。As shown in 5, the device includes: a receiving module 11, a determining module 12 and a sending module 13, wherein the receiving module is used for the user equipment to receive the synchronization signal; the determining module 12 is used for occupying the synchronization signal received by the receiving module 11 determine the accuracy of the synchronization signal, determine the accuracy of the relay synchronization signal according to the accuracy of the synchronization signal, and determine the resources occupied by the relay synchronization signal according to the accuracy of the relay synchronization signal; the sending module 13 is used to determine according to the determination module 11 The resource occupied by the relay synchronization signal sends the relay synchronization signal.
其中， 在同歩信号接收-转发过程中， 接收模块 11 接收其他用户设备发 送的同歩信号， 然后确定模块 12根据接收模块 11接收到的同歩信号使用的 OFDM符号的个数确定同歩信号的精度， 可选的， 不同精度的同歩信号占用 不同的资源，进一歩的，不同精度的同歩信号占用不同个数的 OFDM符号， 且精度越高的同歩信号占用的 OFDM 符号个数越多， 精度越低的同歩信 号占用的 OFDM符号个数越少。 Wherein, in the synchronization signal receiving-forwarding process, the receiving module 11 receives the synchronization signal sent by other user equipment, and then the determining module 12 determines the synchronization signal according to the number of OFDM symbols used by the synchronization signal received by the receiving module 11 The precision, optional, the synchronization signal with different precision occupies different resources, further, the synchronization signal with different precision occupies different number of OFDM symbols, and the number of OFDM symbols occupied by the synchronization signal with higher precision The more, the lower the number of OFDM symbols occupied by the synchronization signal with lower precision.
当某个 OFDM符号既属于到达的同歩信号占用的资源集，又属于中转 同歩信号占用的资源集时， 所述中转同歩信号在所述 OFDM 符号上发送 的内容与接收到的内容相同， 其中， 资源集为同歩信号所占用的资源的总 称。 When a certain OFDM symbol belongs to both the resource set occupied by the arriving synchronization signal and the resource set occupied by the relay synchronization signal, the content sent by the relay synchronization signal on the OFDM symbol is the same as the received content , wherein, the resource set is the total resources occupied by the synchronization signalsay.
具体的，确定模块 12根据接收模块 11接收到的同歩信号占用的资源， 即 OFDM 符号的个数确定同歩信号的精度， 进而根据所确定的同歩信号 的精度确定中转同歩信号的精度， 其中， 中转同歩信号的精度低于接收到 的同歩信号的精度， 最后根据确定的中转同歩信号的精度确定中转同歩信 号所占用的资源， 即中转同歩信号所包含的 OFDM 符号的个数， 并将确 定的中转同歩信号所占用的资源发送给发送模块 13 ; 当发送模块 13接收 到确定模块 12所确定的中转同歩信号所占用的资源发送中转同歩信号。 Specifically, the determination module 12 determines the accuracy of the synchronization signal according to the resource occupied by the synchronization signal received by the receiving module 11, that is, the number of OFDM symbols, and then determines the accuracy of the relay synchronization signal according to the accuracy of the determined synchronization signal , wherein the precision of the relay synchronization signal is lower than the precision of the received synchronization signal, and finally the resource occupied by the relay synchronization signal is determined according to the determined precision of the relay synchronization signal, that is, the OFDM symbols included in the relay synchronization signal number, and send the resources occupied by the determined relay synchronization signal to the sending module 13; when the sending module 13 receives the resources occupied by the relay synchronization signal determined by the determination module 12, send the relay synchronization signal.
进一歩的， 如图 6所示， 对于上述的同歩信号转发装置， 其还可以进一 歩包括： 转发模块 14， 用于根据所述发送模块 13根据所述中转同歩信号占 用的资源发送所述中转同歩信号之后， 随机变换发送中转同歩信号为接收同 歩信号， 并对接收模块 11能够接收到的精度最高的同歩信号进行转发。本发 明实施例提供的用户设备， 为本发明实施例一提供的同歩信号转发方法的执 行设备， 其执行同歩信号转发方法的具体过程可参见图 1、 图 2、 图 3和图 4 所示的方法实施例中的相关描述， 在此不再赘述。 Further, as shown in FIG. 6, for the above-mentioned synchronization signal forwarding device, it may further include: a forwarding module 14, configured to transmit the transmission according to the resources occupied by the forwarding synchronization signal according to the sending module 13. After the above-mentioned relay synchronization signal, the transmission relay synchronization signal is randomly transformed into a reception synchronization signal, and the synchronization signal with the highest accuracy that can be received by the receiving module 11 is forwarded. The user equipment provided in the embodiment of the present invention is the execution device of the synchronization signal forwarding method provided in Embodiment 1 of the present invention, and the specific process of executing the synchronization signal forwarding method can be referred to in FIG. 1 , FIG. 2 , FIG. 3 and FIG. 4 Relevant descriptions in the illustrated method embodiments are not repeated here.
本发明实施例提供的用户设备，通过接收到的同歩信号所占用的资源来 确定中转同歩信号占用的资源， 然后用户设备发送中转同歩信号。 其中， 所占用的资源可以用于标识同歩信号的精度， 在接收到的同歩信号精度确 定后， 用户设备可以根据该精度确定所中转的同歩信号的精度并且中转该 同歩信号，且用户设备会随机转发为收，从而不会忽略更高精度的同歩信号， 使得当用户设备接收到两个以上不同精度的同歩信号时， 仍然能够保证获得 同歩信号， 并转发更高精度的同歩信号， 保证了用户设备的正常通信。 The user equipment provided by the embodiment of the present invention determines the resources occupied by the relay synchronization signal according to the resources occupied by the received synchronization signal, and then the user equipment sends the relay synchronization signal. Wherein, the occupied resources may be used to identify the accuracy of the synchronization signal, and after the accuracy of the received synchronization signal is determined, the user equipment may determine the accuracy of the relayed synchronization signal according to the accuracy and relay the synchronization signal, and The user equipment will randomly forward to receive, so as not to ignore the synchronization signal with higher precision, so that when the user equipment receives more than two synchronization signals with different precision, it can still guarantee to obtain the synchronization signal, and forward the synchronization signal with higher precision The synchronization signal ensures the normal communication of the user equipment.
图 7为本发明另一实施例提供的用户设备的结构示意图， 如图 7所示， 本实施例提供的用户设备包括： 接收器 21、 处理器 22和发送器 23， 其中， 接收器 21， 用于接收同歩信号； 处理器 22， 用于根据接收器 21接收到的同 歩信号占用的资源确定同歩信号的精度， 根据同歩信号的精度确定中转同歩 信号的精度， 根据中转同歩信号的精度确定中转同歩信号占用的资源； 发送 器 23， 用于根据处理器 22确定的中转同歩信号占用的资源发送中转同歩信 号。 FIG. 7 is a schematic structural diagram of a user equipment provided by another embodiment of the present invention. As shown in FIG. 7, the user equipment provided by this embodiment includes: a receiver 21, a processor 22, and a transmitter 23, where the receiver 21, for receiving the synchronization signal; the processor 22 is configured to determine the accuracy of the synchronization signal according to the resources occupied by the synchronization signal received by the receiver 21, determine the accuracy of the relay synchronization signal according to the accuracy of the synchronization signal, and determine the accuracy of the relay synchronization signal according to the accuracy of the relay synchronization The accuracy of the synchronization signal determines the resource occupied by the relay synchronization signal; the transmitter 23 is configured to send the relay synchronization signal according to the resource occupied by the relay synchronization signal determined by the processor 22.
其中， 接收器 21接收其他用户设备发送的同歩信号， 然后处理器 22根 据接收器 21接收到的同歩信号使用 OFDM符号的个数确定同歩信号的精度， 可选的， 不同精度的同歩信号占用不同的资源； 进一歩的， 不同精度的同歩 信号使用不同个数的 OFDM符号， 且精度越高的同歩信号使用的 OFDM 符号个数越多， 精度越低的同歩信号使用的 OFDM符号个数越少。 Wherein, the receiver 21 receives the synchronization signal sent by other user equipment, and then the processor 22According to the synchronization signal received by the receiver 21, the accuracy of the synchronization signal is determined using the number of OFDM symbols. Optionally, synchronization signals with different precisions occupy different resources; further, synchronization signals with different precisions use different number of OFDM symbols, and the synchronization signal with higher precision uses more OFDM symbols, and the synchronization signal with lower precision uses less OFDM symbols.
当某个 OFDM符号既属于到达的同歩信号占用的资源集，又属于中转 同歩信号占用的资源集时， 所述中转同歩信号在所述 OFDM 符号上发送 的内容与接收到的内容相同， 其中， 资源集为同歩信号所占用的资源的总 称。 When a certain OFDM symbol belongs to both the resource set occupied by the arriving synchronization signal and the resource set occupied by the relay synchronization signal, the content sent by the relay synchronization signal on the OFDM symbol is the same as the received content , wherein, the resource set is a general term for resources occupied by the synchronization signal.
具体的， 处理器 22 根据确定的接收到的同歩信号占用的资源， 即 OFDM符号的个数确定同歩信号的精度，进而根据所确定的同歩信号的精 度确定中转同歩信号的精度， 其中， 中转同歩信号的精度低于接收到的同 歩信号的精度， 最后根据确定的中转同歩信号的精度确定中转同歩信号所 占用的资源， 即中转同歩信号所包含的 OFDM 符号的个数， 并将确定的 中转同歩信号所占用的资源发送给发送器 23 ; 当发送器 23接收到处理器 22所确定的中转同歩信号所占用的资源发送中转同歩信号。 Specifically, the processor 22 determines the accuracy of the synchronization signal according to the determined resource occupied by the received synchronization signal, that is, the number of OFDM symbols, and then determines the accuracy of the relay synchronization signal according to the determined accuracy of the synchronization signal, Wherein, the precision of the relay synchronization signal is lower than the precision of the received synchronization signal, and finally the resource occupied by the relay synchronization signal is determined according to the determined precision of the relay synchronization signal, that is, the number of OFDM symbols contained in the relay synchronization signal number, and send the resources occupied by the determined relay synchronization signal to the transmitter 23; when the transmitter 23 receives the resource occupied by the relay synchronization signal determined by the processor 22, it sends the relay synchronization signal.
可选的， 发送器 23， 还用于发送中转同歩信号之后， 随机变换发送中转 同歩信号为接收同歩信号，并对接收器 21能够接收到的精度最高的同歩信号 进行转发。 本发明实施例提供的用户设备， 可以用于执行上述方法实施例的 技术方案， 其实现原理和技术效果类似， 此处不再赘述。 Optionally, the transmitter 23 is also configured to randomly convert the transmitted and transmitted synchronization signal into a received synchronization signal after transmitting the relayed synchronization signal, and forward the most accurate synchronization signal that the receiver 21 can receive. The user equipment provided by the embodiments of the present invention can be used to implement the technical solutions of the above method embodiments, and its implementation principles and technical effects are similar, and will not be repeated here.
本领域普通技术人员可以理解： 实现上述方法实施例的全部或部分歩骤 可以通过程序指令相关的硬件来完成， 前述的程序可以存储于一计算机可读 取存储介质中， 该程序在执行时， 执行包括上述方法实施例的歩骤； 而前述 的存储介质包括： ROM、 RAM, 磁碟或者光盘等各种可以存储程序代码的介 质。 Those of ordinary skill in the art can understand that all or part of the steps for implementing the above method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, Executing the steps of the above-mentioned method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk, and other various media that can store program codes.
最后应说明的是： 以上各实施例仅用以说明本发明的技术方案， 而非对 其限制； 尽管参照前述各实施例对本发明进行了详细的说明， 本领域的普通 技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改， 或者对其中部分或者全部技术特征进行等同替换； 而这些修改或者替换， 并 不使相应技术方案的本质脱离本发明各实施例技术方案的范围。 Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.
| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2014/071700WO2015113225A1 (en) | 2014-01-28 | 2014-01-28 | Synchronization signal forwarding method and user equipment |
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| CN105103632Atrue CN105103632A (en) | 2015-11-25 |
| CN105103632B CN105103632B (en) | 2019-02-12 |
| Application Number | Title | Priority Date | Filing Date |
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| CN201480000571.3AActiveCN105103632B (en) | 2014-01-28 | 2014-01-28 | Synchronization signal forwarding method and user equipment |
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| US20100054172A1 (en)* | 2008-09-04 | 2010-03-04 | Nokia Siemens Networks Oy | Frame synchronization using bidirectional transit and receive zones |
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| CN103108389A (en)* | 2011-11-15 | 2013-05-15 | 中兴通讯股份有限公司 | Communication method and communication system from device to device and user devices |
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