CN101902822B - Base station-assisted mobile terminal equipment autonomously accessing method and device - Google Patents

Base station-assisted mobile terminal equipment autonomously accessing method and device Download PDF

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CN101902822B
CN101902822B CN 201010237273 CN201010237273A CN101902822B CN 101902822 B CN101902822 B CN 101902822B CN 201010237273 CN201010237273 CN 201010237273 CN 201010237273 A CN201010237273 A CN 201010237273A CN 101902822 B CN101902822 B CN 101902822B
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signaling
transmitter
resources
data
base station
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CN101902822A (en )
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徐少毅
黄清
陶成
谈振辉
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北京交通大学
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Abstract

本发明提供了一种基站辅助的移动终端设备自主接入的方法和装置,通过发送机给接收机发送请求信令;所述请求信令包括发送机的ID以及接收机的ID,接收机正确接收到请求信令后,回馈可发送信令给发送机,发送机接收到可发信令后,从LTE系统的基站发送的上行资源分配信息中获取当前发送数据可用的资源,用所获取的可用资源进行数据传送,借助终端间握手抢占资源,并采用与LET系统相同的频率和时隙进行传送,保证了用户终端间的快速通信和资源的合理利用。 The present invention provides a method of a base station apparatus and mobile terminal autonomous auxiliary access by sending signaling to the receiver sends a request; signaling the request ID includes the ID transmitter and a receiver, the receiver correctly after receiving the request signaling, the signaling may be sent back to the transmitter, the transmitter can be received signaling, uplink resource allocation information transmitted from the base station of the LTE system acquires the current resources available to transmit data, the use of the acquired resources available for data transmission, handshake preempt resources between terminals, and the LET system using the same frequency and time slot for transmission, it guarantees quick and rational use of resources of communication between the user terminals by means of.

Description

一种基站辅助的移动终端设备自主接入的方法和装置 A base station for a mobile assisted methods and apparatus for autonomous terminal access

技术领域 FIELD

[0001] 本发明涉及移动通信技术领域,特别是涉及一种基站辅助的移动终端设备自主接入的方法和装置。 [0001] The present invention relates to a method of mobile communication technology field, particularly to a base station assisted autonomous mobile terminal and access means.

背景技术 Background technique

[0002] 在MT-Advanced网络中,具有认知功能的终端设备之间在满足一定条件时可以直接进行通信。 [0002] In the MT-Advanced network, between the terminal device having cognitive function may communicate directly when certain conditions are met.

[0003] 目前,主要有两种网络结构:集中式控制的蜂窝网络与分布式控制的Ad-hoc网 [0003] Currently, there are two network structures: Ad-hoc network of a cellular network with distributed control and centralized control

络。 Network.

[0004] 蜂窝网络:终端设备(UE)之间的通信必须要通过基站(BS,或者NB,eNB)的控制。 [0004] cellular networks: the communication between a terminal equipment (UE) must be controlled via a base station (BS, or NB, eNB) of.

[0005] Ad-hoc网络:UE之间可以直接进行通信,或者通过另一个UE进行中继。 [0005] Ad-hoc networks: the direct communication may be performed between the UE, a relay, or by another UE.

[0006] 在蜂窝网络中,即使两个终端设备相邻很近,也必须要通过基站之类的中心控制器来进行通信的控制,包括发射功率的控制以及使用的资源的分配。 [0006] In a cellular network, even if two closely spaced terminal devices, it must also be controlled by the central controller to communicate as a base station, including the control and allocation of resources used in transmission power. 这样的集中式控制的系统带来的好处是便于资源管理以及干扰控制,但是缺点也很明显——资源的使用效率不高,例如,即使两个UE相距很近,也要使用双倍的资源来进行通信。 The benefits of such centralized control system is brought to facilitate resource management and interference control, but the disadvantages are also obvious - not high resource efficiency, for example, even if two closely spaced UE, but also double the resource usage to communicate. 因此,为了提高频谱使用效率,获得更高的系统吞吐量,LTE-Advanced中已经提出了一种设备间直接通信的模式(Device-to-Device communication, D2D),这样,未来的通信网络将不再是单一模式的网络,而是集中式网络和分布式网络并存的混合式网络,未来的混合网络及D2D通信模式中,一个UE可以直接给另一个UE发送数据,也可以在基站的控制下与另一个UE通信,甚至可以同时与基站和其他UE进行通信。 Therefore, to improve the spectral usage efficiency, higher throughput systems, LTE-Advanced mode has been proposed (Device-to-Device communication, D2D) direct communication between an apparatus, so that in future communication networks will not then the network is a single mode, but the centralized network and a distributed network coexist hybrid network, the hybrid network and future D2D communication mode, a UE may transmit data directly to another UE, the base station may be under the control of the , even while communicating with the other UE and the base station communicate with another UE. 与单一模式的网络相比,这种混合网络无疑将带来更大的系统性能的增益。 Compared with single-mode network, this hybrid network will undoubtedly lead to greater gains in system performance.

[0007] 在蜂窝网络中,基站控制了UE之间通信的所有细节,但是在混合网络中,如何控制UE之间的数据通信是一个需要解决的问题。 [0007] In a cellular network, the base station controls all details of the communication between the UE, but in the hybrid network, the problem of how to control the data communication between the UE is a need to be addressed. 关于这个问题,有几个方面需要考虑: On this issue, there are several aspects to consider:

[0008] 第一,如何在授权频带实现D2D传输,这同时也意味着如何在混合网络中实现有效的资源复用。 [0008] First, how to achieve D2D licensed band transmission, this also means that how to achieve efficient resource reuse in a hybrid network.

[0009] 第二,如何实现同步。 [0009] Second, how to achieve synchronization. 在集中式控制的网络中,UE的传输完全由eNB来控制,UE可以实现与eNB之间的同步;而在ad-hoc这样的分布式网络中,设备之间的接入是依靠基于CSMA/CA机制的竞争来实现的,在这样的网络中,设备之间是没有同步的。 In the centralized control network, the transmission of the UE is completely controlled by the eNB, and the UE can achieve synchronization between the eNB; in such a distributed network in an ad-hoc access between devices rely on CSMA / CA mechanism of competition to achieve, in such a network, there is no synchronization between devices.

[0010] 第三,对于复用相同资源的系统而言,如何实现干扰协调。 [0010] Third, the system for reuse the same resources, and how to achieve interference coordination. 这里,除了要考虑系统内部的干扰,还要考虑系统之间的干扰。 Here, in addition to considering interference within the system, but also consider the interference between systems. 同时,信令开销一定要在可以接受的范围之内。 Meanwhile, the signaling overhead must be within the acceptable range.

[0011] 第四,当网络中存在较多的D2D传输对时,如何设计随机接入模式,使得它们既可以实现有效地随机接入和D2D传输,又可以不干扰主系统(LTE系统或者LTE-A系统为主的蜂窝系统)。 [0011] Fourth, when there is more D2D transmission on the network, how to design a random access mode, such that they may be implemented efficiently and D2D random access transmission, and can not interfere with the primary system (LTE system or LTE -A system based cellular system).

[0012] 第五,如何设计和实现有效的握手过程来实现D2D传输。 [0012] Fifth, how to design and implement effective procedures to implement D2D transmission handshake. 否则,D2D的用户不知道何时开始D2D通信,以及采用何种资源进行D2D通信。 Otherwise, D2D users do not know when to start D2D communication, and D2D communication using what resources.

[0013] 在混合网络中,由于D2D传输和蜂窝用户的传输复用相同的频率资源,因此需要无线资源管理更加智能化,以避免干扰改善系统性能。 [0013] In a hybrid network, since the transmission and D2D cellular subscriber transmission frequency reuse the same resources, and therefore requires more intelligent radio resource management, in order to avoid interference to improve system performance. 要求解决方案能够利用所有可获得信息,包括蜂窝网络中的信令,来实现D2D传输的无线资源管理(频率资源的分配、功率控制以及干扰抑制等等)。 A solution that would take advantage of all available information, including cellular network signaling, the radio resource management to implement D2D transmission (frequency resource allocation, power control and interference suppression, etc.).

[0014]目前,一个简单的方法就是eNB完全控制D2D数据传输,就像控制蜂窝系统中的上行传输一样。 [0014] Currently, a simple way is completely eNB D2D data transmission control, as control of the uplink transmission as a cellular system. 比如,如果一个终端UE要发送数据给另一个UE (分别称这两个UE为TxUE与RxUE),在eNB完全控制的场景下,信令发送与接收过程,参照图I所示,为eNB完全控制的D2D传输信令流程示意图。 For example, if a terminal UE to send data to another UE (UE are referred to as two TxUE and RxUE), complete control of the eNB scenario, the signaling transmission and reception, as shown with reference to FIG I, the eNB complete D2D transmission control signaling flow schematic. 这种方法中心控制单元eNB可以容易地控制所有D2D数据传输过程,无需担心由于多个D2D对同时通信产生的混乱,eNB可以在保证一定干扰水平的情况下实现D2D用户与蜂窝用户的资源复用。 In this way the central control unit can easily control all eNB D2D data transmission, without worrying about the confusion of the D2D plurality of simultaneous communications generated, the eNB may achieve cellular subscriber D2D user resource multiplexing in the case where the interference level guaranteed . 但是,由于eNB完全控制了这个过程,所有与D2D有关的信令过程也消耗了蜂窝系统的资源,因此会影响蜂窝系统的性能。 However, due to the eNB full control of this process, all related to the D2D signaling process also consumes resources of the cellular system, thus affecting the performance of the cellular system. 同时,如果混合网络中D2D通信对数量较大时,信令开销也会很大。 Meanwhile, if the mixing amount of the D2D communication network is large, signaling overhead will be great.

[0015] 另外一种解决方案是完全自主通信的方案,与Ad-hoc网络中的实现方法相似,如图2所示,为具有RTS和CTS的CSMA/CA原理,即在IEEE802. 11中采用的具有RTS/CTS的CSMA/CA或者是没有RTS/CTS的CSMA/CA。 [0015] Another solution is to completely independent communication scheme, and Ad-hoc network implementation is similar, as shown in FIG. 2 as CSMA / CA with RTS and CTS principle, i.e. using the in IEEE802. 11 the CSMA / CA has RTS / CTS or no RTS / CTS of CSMA / CA. 这种方法的优点是解决了分布式网络中数据发送时争用资源的问题。 The advantage of this method is to solve the problem of resource contention when sending data in a distributed network. 缺点是RTS,CTS和ACK/NACK等控制信令在数据信道发送,因此在发送控制信令的时候是无法发送数据的。 The disadvantage is that RTS, CTS and ACK / NACK control signaling and other data transmission channel, and therefore can not transmit data at the time of transmitting control signaling. 在CSMA/CA中,载波感知是避免发生数据碰撞的重要方式,然而,在DIFS和SIFS的过程中也不能发送数据。 In CSMA / CA, the carrier sensing is an important way to avoid data collisions occur, however, can not send data during the DIFS and SIFS. 以上两点将会降低频谱使用效率,特别是当需要发送的数据包是大量较短数据包时,这种方法就更低效了。 The above two points will reduce the efficiency of spectrum use, especially when the data packet is a need to send a large number of short packets of this method is even more inefficient. 另外,当异构网络复用相同资源时,使用结合或者不结合RTS/CTS的CSMA/CA时,并不能有效避免来自于蜂窝用户的干扰。 Further, when the reuse the same resources in a heterogeneous network, in combination with or without binding RTS / CTS of CSMA / CA, and can not effectively prevent interference from cellular subscriber.

[0016] 其中:DIFS为上一次长帧发送完成后,进行下一长次帧发送之前的中间间隔的时间。 [0016] wherein: after DIFS is the length of the frame transmission time, before the next time intermediate times longer frame transmission interval.

[0017] SIFS为短帧之间的间隔。 [0017] SIFS is a short interval between frames.

[0018] SIFS比DIFS持续的时间短,使用两种帧间间隔(IFS)是为了区分要传输的数据帧的种类以及优先级。 [0018] SIFS duration shorter than DIFS, two interframe space (IFS) is to distinguish the type of the data frame to be transmitted and the priority.

[0019] 使用DIFS和SIFS的作用是因为在WLAN网络中,节点之间没有中心控制器进行协调,因此碰撞的机会很高。 [0019] the role of the use of DIFS and SIFS is because the WLAN network, there is no central controller to coordinate among the nodes, a high chance of collision. 使用DIFS和SIFS后,就可以减少碰撞的机会。 After using DIFS and SIFS, you can reduce the chance of collision. 节点在发送帧之前,先听信道,没有发现其他节点发送数据后,再侦听一个DIFS或者SIFS的间隔,确定依然没有其他节点在发送数据后,才进行发送。 Node before transmitting the frame, the first listen to channels, the transmission data is not found another node, then the listening interval or a DIFS SIFS determining still no other node after transmitting the data, before transmission.

[0020] 可见,这种原理的弊病在于: [0020] visible, the ills of this principle is that:

[0021] 在IFS期间,无法发送数据,降低了系统效率; [0021] During the IFS, the data can not be sent, reduce the efficiency of the system;

[0022] 对于要发送较多短帧时,要使用大量IFS,更加降低了系统的效率。 [0022] For many short frame is to be transmitted, the IFS uses a large amount, further reducing the efficiency of the system.

[0023] 可见,目前已有的解决方法要么存在信令负载太大的问题,要么存在频谱效率低的问题,都不能提出有效解决方案。 [0023] visible, there are solutions exist either signaling load much of a problem, either there is a low spectral efficiency, we can not come up with effective solutions.

[0024] 因此,目前需要本领域技术人员迫切解决的一个技术问题就是:如何能够创新地提出一种新的实现方法,以解决现有技术中所存在的问题,提高移动终端之间通信的效率。 [0024] Thus, the current urgent need in the art the art that a technical problem to be solved: how to be able to present a new innovative method of realization, the prior art to solve the problems, to improve the efficiency of communication between the mobile terminal .

[0025] 发明内容 [0025] SUMMARY OF THE INVENTION

[0026] 本发明所要解决的技术问题是提供一种基站辅助的移动终端设备自主接入的方法和装置,用以保证用户终端间的快速高效通信。 [0026] The present invention solves the technical problem of providing a method and apparatus of a base station assisted autonomous mobile terminal access to ensure fast and efficient communications between user terminals. [0027] 为了解决上述问题,本发明公开了一种基站辅助的移动终端设备自主接入的方法,所述方法包括: [0027] In order to solve the above problems, the present invention discloses a method of a base station assisted mobile terminal autonomous access, the method comprising:

[0028] 发送机给接收机发送请求信令;所述请求信令包括发送机的ID以及接收机的ID ; [0028] transmitter to the receiver sends a signaling request; signaling includes the request ID transmitter and ID receiver;

[0029] 接收机正确接收到请求信令后,回馈可发送信令给发送机; After [0029] the receiver correctly receives the request signaling, the signaling may be sent back to the transmitter;

[0030] 发送机接收到可发信令后,从基站发送的上行资源分配信息中获取当前发送数据可用的资源;所述基站发送的上行资源即为LTE系统中的上行资源; After the [0030] transmitter to a signaling received, acquires the current resources available to transmit data from a base station transmits uplink resource allocation information in; uplink resource is the resource of the base station sending the LTE system;

[0031] 用所获取的可用资源进行数据传送。 [0031] The resources available for data transmission using the acquired information.

[0032] 优选的,所述方法在用所获取的可用资源完成数据的传送前还包括: [0033] 发送机将所获取的可用资源上的接收信号功率值与预设阀值进行比较; Before [0032] Preferably, the method of transmitting data is completed in the available resources with the acquired further comprises: a received signal power threshold value is compared with a preset value of the resources available on the [0033] transmitting the acquired machine;

[0034] 根据比较结果选取干扰小的可用资源。 [0034] Select small interfering available resources according to the comparison result.

[0035] 优选的,所述方法在基站发送上行分配信息前还包括: [0035] Preferably, the method when the base station transmits uplink allocation information further comprises:

[0036] 定义三个新的与LTE系统具有相同的频率资源与时隙结构的物理信道,分别为公共控制信道、数据控制信道和数据业务信道。 [0036] The definition of three new frequency resources and have the same slot structure and the physical channels in the LTE system, respectively, common control channel, data channel, and traffic channel data.

[0037] 优选的,若接收机未回馈可发送信令给发送机,则发送机退避预设时间段后再次发送请求信令。 [0037] Preferably, if the receiver can not send feedback signaling to the transmitter, the transmitter after a preset period of time backoff request signaling sent again.

[0038] 本发明还公布了一种基站辅助的移动终端设备自主接入的装置,所述装置包括: [0038] The present invention also announced aid of a base station apparatus of mobile terminal access independent, said apparatus comprising:

[0039] 请求信令发送模块,用于发送机给接收机发送请求信令;所述请求信令包括发送机的ID以及接收机的ID ; [0039] Request signaling sending module, configured to send a transmission request signaling to a receiver unit; signaling includes the request ID transmitter and ID receiver;

[0040] 可发送信令回馈模块,用于接收机正确接收到请求信令后,回馈可发送信令给发送机; [0040] The module may send feedback signaling, a receiver for correctly receiving the request signaling, the signaling may be sent back to the transmitter;

[0041] 可用资源获取模块,用于发送机接收到可发信令后,从基站发送的上行资源分配信息中获取当前发送数据可用的资源;所述基站发送的上行资源即为LTE系统中的上行资源; [0041] The available resource acquisition module is configured to, after the transmitter receives signaling may acquire the current send data from available resources uplink resource allocation information from the base station; and the base station sending the uplink resource is the LTE system uplink resources;

[0042] 数据传送模块,用于用所获取的可用资源进行数据传送。 [0042] The data transmission module, acquired by the available resources for data transmission.

[0043] 优选的,所述装置还包括: [0043] Preferably, the apparatus further comprising:

[0044] 比较模块,用于发送机将所获取的可用资源上的接收信号的功率值与预设阀值进行比较; [0044] The comparison module for comparing a threshold value with a preset power signal received on the resources available to the transmitter comparing the acquired;

[0045] 选取模块,用于根据比较结果选取干扰小的可用资源。 [0045] The selection module configured to select small interfering available resources according to the comparison result.

[0046] 优选的,所述装置还包括: [0046] Preferably, the apparatus further comprising:

[0047] 信道定义模块,用于定义三个新的与LTE系统具有相同的频率资源与时隙结构的物理信道,分别为公共控制信道、数据控制信道和数据业务信道。 [0047] The channel definition means for defining three new frequency resources and have the same slot structure and the physical channels in the LTE system, respectively, common control channel, data channel, and traffic channel data.

[0048] 优选的,所述装置还包括: [0048] Preferably, the apparatus further comprising:

[0049] 处理模块,用于在接收机未回馈可发送信令给发送机时,发送机退避预设时间段后再次发送请求信令。 [0049] processing means for when the receiver can not send feedback signaling to the transmitter, the transmitter after a preset period of time backoff request signaling sent again.

[0050] 与现有技术相比,本发明具有以下优点: [0050] Compared with the prior art, the present invention has the following advantages:

[0051] 本发明通过发送机给接收机发送请求信令;所述请求信令包括发送机的ID以及接收机的ID,接收机正确接收到请求信令后,回馈可发送信令给发送机,发送机接收到可发信令后,从LTE系统的基站发送的上行资源分配信息中获取当前发送数据可用的资源,用所获取的可用资源进行数据传送,借助终端间握手抢占资源,并采用与LET系统相同的频率和时隙进行传送,保证了用户终端间的快速通信和资源的合理利用。 [0051] The present invention is a transmission request the transmitter to a receiver via a signaling; signaling after the request ID includes an ID transmitter and a receiver, the receiver correctly receives the request signaling, the signaling may be sent back to the transmitter , the transmitter after receiving the signaling may be acquired from the uplink resource allocation information transmitted from the base station in the LTE system currently available resources to transmit data, data transmission with the resources available on the acquired resource by preemption handshake between terminals, and the use of LET system with the same frequency and time slot for transmission, guarantee quick and rational use of resources of communication between the user terminal.

[0052] 附图说明 [0052] BRIEF DESCRIPTION OF DRAWINGS

[0053] 图I是本发明现有技术中基站(eNB)完全控制的D2D传输信令流程示意图; [0053] FIG. I is prior art to the present invention, a base station (eNB) full control signaling transmitted a D2D schematic flow diagram;

[0054] 图2是本发明现有技术中具有RTS和CTS的CSMA/CA原理示意图; [0054] FIG. 2 is a schematic diagram of the prior art, the present invention has the RTS and CTS CSMA / CA principle;

[0055] 图3是本发明实施例一所述的一种基站辅助的移动终端设备自主接入的方法流程图; [0055] FIG. 3 is a flowchart of a method of a base station according to an embodiment of the auxiliary mobile terminal device autonomously access the embodiment of the present invention;

[0056] 图4是本发明实施例一所述的D2D系统和LTE系统上行复用频率资源的示意图; [0056] FIG. 4 is a schematic embodiment of the present invention, the multiplexing resources according to a frequency of the system and the LTE D2D uplink system;

[0057] 图5是本发明实施例一所述的多个D2D发送-接收UE对之间的资源竞争的示意图; [0057] FIG. 5 is a diagram D2D transmitting a plurality of embodiments according to the present invention - a schematic view of competition for resources among the UE reception;

[0058] 图6是本发明实施例二所述的一种基站辅助的移动终端设备自主接入的装置结构图。 [0058] FIG. 6 shows the structure of a mobile autonomous access terminal apparatus of a base station according to Embodiment 2 of the secondary of the present invention.

具体实施方式 detailed description

[0059] 为使本发明的上述目的、特征和优点能够更加明显易懂,下面结合附图和具体实施方式对本发明作进一步详细的说明。 [0059] For the above-described objects, features and advantages of the invention more apparent, the accompanying drawings and the following specific embodiments of the present invention will be further described in detail.

[0060] 实施例一: [0060] Example a:

[0061] 参照图3,示出了本发明的一种基站辅助的移动终端设备自主接入的方法流程图,所述方法具体包括: Method [0061] Referring to FIG 3, shows a base station according to the present invention, the auxiliary mobile terminal device autonomously access flowchart, the method comprises:

[0062] S301,发送机给接收机发送请求信令;所述请求信令包括发送机的ID以及接收机的ID ; [0062] S301, the transmitter transmits to the receiver request signaling; signaling includes the request ID transmitter and ID receiver;

[0063] S302,接收机正确接收到请求信令后,回馈可发送信令给发送机; [0063] S302, the receiver correctly receives the request signaling, the signaling may be sent back to the transmitter;

[0064] 其中,发送请求信令简称RTS,可发送信令简称CTS。 [0064] wherein the transmission request signaling abbreviated RTS, may send signaling abbreviated CTS.

[0065] 在一种设备间直接通信的模式(Device-to-Device communication,D2D)系统中,发送机和接收机根据RTS/CTS的时隙Aloha(SSARC)的原理进行握手过程,这里所述的握手也即发送机给接收机发送的包括发送机的ID、接收机的ID的请求信令,接收机正确接收到请求信令后,回馈可发送信令给发送机的过程,实际应用中,所述的发送机和接收机都是D2D系统的用户终端,由于系统中存在可能同时存在多对需要发送和接收的数据的终端,这样握手过程也可以理解为是抢占传送数据资源的过程,握手成功也就可以理解为抢占到了传送数据所需的资源。 [0065] In the direct mode of communication between an apparatus (Device-to-Device communication, D2D) system, a transmitter and a receiver according to the principles handshake RTS / CTS slot Aloha (SSARC), where the i.e. handshake transmitter comprises a transmitter ID to a transmission receiver, the receiver ID of the request signaling, the receiver correctly receives the request signaling may be sent back to the transmitter of the signaling process, practical applications , the user terminal transmitter and receiver are D2D system, since there may be present in the system requires the terminal to send and receive data to a plurality of simultaneously, so that the handshake process may be understood as data transmission resource preemption, handshake successful it can be understood as to seize the resources needed to transmit data.

[0066] S303,发送机接收到可发信令后,从基站发送的上行资源分配信息中获取当前发送数据可用的资源;所述基站发送的上行资源即为LTE(Long Term Evolution,长期演进)系统将要使用的上行传输资源; After the [0066] S303, the transmitter receives signaling may be acquired from the uplink resource allocation information transmitted from the base station currently transmitting data resources available; the base station transmits the uplink resource is the LTE (Long Term Evolution, long term evolution) the system uplink transmission resource to be used;

[0067] 基站(eNB)发送蜂窝小区中的用户终端(UE)的上行资源分配信息(即UL MAP信息),具有认知功能的D2D的终端可以译出这个表,进而知道蜂窝小区的终端的上行所要占用的资源的信息。 [0067] D2D terminal station (eNB) transmits the user terminal (UE) in a cell of the uplink resource allocation information (i.e., UL MAP information), can be translated with cognitive function table, and further knows the cell terminal information to be occupied by the uplink resources.

[0068] S304,用所获取的可用资源进行数据传送。 [0068] S304, the resources available for data transmission using the acquired information.

[0069] 优选的,所述方法在用所获取的可用资源完成数据的传送前还包括: Before [0069] Preferably, the method of transmitting data is completed in the available resources with the acquired further comprises:

[0070] 发送机将所获取的可用资源的功率值与预设阀值进行比较;[0071 ] 根据比较结果选取干扰小的可用资源。 [0070] The power value is compared with a preset threshold value of the available resources to the acquired transmitter; [0071] Select small interfering resources available to the comparison result.

[0072] D2D UE对中的发送UE将会对这些资源进行检测,找到哪些资源上对D2D UE的干扰小是他们可以复用的,而哪些资源上对D2D传输的干扰大,是D2D UE要避免使用的。 [0072] sending UE D2D UE pair of these resources will detect, locate resources on which small interference D2D UE is that they can be reused, and what resources on large interference D2D transmission, is to D2D UE avoid use. 具体的检测通过计算所获取的可用资源上的接收信号的功率值与预设阀值进行比较;按照比较结果选取干扰小的可用资源,具体来说,功率值小于预设阀值的干扰就小。 Detected by comparing the specific value with a preset power threshold value calculation on the received signal acquired resources available; small interfering selected according to the comparison result of the available resources, specifically, the interference power is less than the predetermined threshold value is small . 实际应用中,具体要找到多少可用的资源是根据其要发送的数据量大小来定的。 Practical applications, specifically how many resources available to find the size that is based on the amount of data to be transmitted to set. [0073] 优选的,所述方法在基站发送上行分配信息前还包括: [0073] Preferably, the method when the base station transmits uplink allocation information further comprises:

[0074] 定义公共控制信道、数据控制信道和数据业务信道。 [0074] The definition of common control channel, data channel, and traffic channel data.

[0075] 在具体实现中,需要为D2D系统定义三个新的物理信道,这三个新的物理信道与LTE系统具有相同的频率资源与时隙结构。 [0075] In a specific implementation, to define three new physical channel for the D2D system, three new physical channels in the LTE system has the same frequency resource and time slot structure. 所定义的信道具体为公共控制信道、数据控制信道和数据业务信道。 Channel is specifically defined common control channel, data channel, and traffic channel data.

[0076] 优选的,若接收机未回馈可发送信令CTS给发送机,则发送机退避预设时间段后再次发送请求信令。 [0076] Preferably, if the receiver can not send feedback signaling CTS to the transmitter, the transmitter transmits a preset period backoff request signaling again.

[0077] 所定义的三个信道,在公共控制信道Common Control Channel (CCCH),多个D2D通信对基于RTS/CTS原理,通过争用的方式获得D2D传输时的专用资源。 [0077] The three channels defined in the common control channel Common Control Channel (CCCH), dedicated resources for D2D communication plurality of time based on RTS / CTS principle, obtained by way D2D transmission contention. RTS全称RequestTo Send,是由D2D对中的发送终端(TxUE)发送的数据传输请求,也即请求信令,CTS全称Clear To Send,是由D2D对中的接收终端(RxUE)发送的针对RTS发送的应答,也即可发信令。 RTS full name RequestTo Send, data transfer request is transmitted by the transmitting terminal in D2D (TxUE), i.e. request signaling, CTS stands for Clear To Send, RTS is sent by the receiving terminal for (RxUE) pair transmitted D2D the response also can be signaled. RTS和CTS在时域上共享相同的CCCH频率资源,即:在相同的CCCH上,RTS在第一个时隙发送,CTS在第三个时隙发送。 RTS and CTS CCCH share the same frequency resource in the time domain, namely:, RTS transmitted in the first time slot on the same CCCH, transmitted in the third time slot CTS. 本发明中假设多个D2D传输对的CCCH信道可以采用时分多址接入(TDMA,全称:Time Division Multiple Access)的复用模式,采用TDMA的好处是能够避免有两对D2D传输对同时成功接入了信道但是却选择了相同的DTCH,从而造成数据传输时的碰撞。 The present invention assumes that a plurality of transmission channels on the CCCH D2D may employ time division multiple access (TDMA, full name: Time Division Multiple Access) multiplexing mode, the benefits of employing TDMA can be avoided for two simultaneous transmissions successfully received D2D the selected channel but the same DTCH, causing collision of data transmission. 其中,RTS是基于争用的传输,而CTS并不是基于争用的,而是针对某一RTS在指定的时间和频率资源上的唯一确定的响应。 Which, RTS is based on the transmission contention, and CTS is not based on race, but the only response to a RTS determined at a specified time and frequency resources.

[0078] 数据控制信道Data Control Channel (DCCH),被用于承载与数据传输有关的控制消息,包括确认收到信号(ACK)/确认没有收到信号(NACK)。 [0078] Data Control Channel Data Control Channel (DCCH), used to carry the data related to transmission control message, including receipt acknowledgment signal (ACK) / not received acknowledgment signal (NACK). 所述的确认收到和确认没有收到都是针对数据业务信道Data Traffic channels (DTCH),被用于承载数据业务。 Receipt acknowledgment and the acknowledgment is not received for the data traffic channel Data Traffic channels (DTCH), used to carry data traffic. 因为D2D数据传输与蜂窝用户是资源共享的,对应于RTS/CTS的DTCH资源同本地的其他D2D用户无争用,但是可能会与蜂窝用户存在争用,但是这种资源争用会在后文中通过D2D资源管理来解决。 Because D2D data transmission cellular users share the resources corresponding to the RTS / CTS the DTCH resource with local D2D other users contention-free, but may contend with cellular users, but this resource contention will hereinafter in It is solved by D2D resource management.

[0079] eNB将会把D2D的CCCH资源和DCCH资源在整个小区内的广播信道(PBCH)或者下行控制信道(PDCCH)进行广播,将被D2D用户用于握手以及建立D2D通信连接和数据传输认证过程。 [0079] eNB will the DCCH and CCCH resources D2D resources throughout the cell broadcast channel (PBCH) or a downlink channel (PDCCH) broadcast, the user will be used to handshake and establish a D2D D2D communication connection and data transfer certification process. 所有的D2D用户都能很容易地获得CCCH的资源信息,由于CCCH信道占用专门资源,因此具有足够的可靠性,而不会被干扰。 All D2D users can easily obtain information CCCH resources, since CCCH channel occupancy specialized resources, with sufficient reliability, without being disturbed. 由于D2D用户也能够与eNB进行通信,因此D2D信令与通信过程与蜂窝系统遵循相同的帧结构和时间关系。 Since the D2D user can communicate with the eNB, and thus D2D communication process with the cellular signaling systems follow the same frame structure and the time. D2D UE的数据在DTCH信道上发送,且这个数据是与蜂窝小区的UE共享资源进行发送的。 D2D UE in data transmission channel DTCH, and transmits the data to the shared resource and the UE's cell.

[0080] 需要进一步说明的是,LTE系统作为蜂窝系统的例子。 [0080] It is further noted that, LTE system as an example of a cellular system. 在LTE系统中,有三种上行物理信道:PUCCH、PUSCH以及PRACH。 In the LTE system, there are three uplink physical channel: PUCCH, PUSCH, and PRACH. PUCCH将被分配在系统带宽的两侧,PUSCH和PRACH将复用剩下的频率资源,其中PRACH使用中心频段预留的6个物理资源块(PRB)资源。 Both will be assigned PUCCH in the system bandwidth, the PUSCH and PRACH frequency multiplexed with the rest of the resources, wherein the center frequency band reserved PRACH using six physical resource block (PRB) resources. 为了有效解决干扰问题,将要求一些频率资源需要单独划分出来。 In order to effectively solve the interference problem, it will require some frequency resources need to be divided out separately. 这里为了具体说明,以举例的方式进行介绍,具体可参照图4,示出了D2D系统和LTE系统上行复用频率资源的示意图,LTE的PUCCHs/PRACHs将像通常应用一样被保留,而D2D系统的两个控制信道CCCH和DCCH的频率资源需要从LTE的PUSCHs中单独预留出来。 Here, for concrete description, by way of example be described, specifically referring to FIG. 4, there is shown a schematic diagram of D2D system and the LTE system, uplink multiplexing frequency resources, LTE of PUCCHs / PRACHs the like usually applied are retained while D2D system the two control channels CCCH and DCCH frequency resources need to be reserved in the PUSCHs from the LTE separate out. 而剩余的LTE PUSCH资源将与D2D数据通信(DTCH信道)共享资源,这个过程将通过D2D UE的无线资源管理(RRM)算法实现。 While the remaining LTE PUSCH resource shared resource D2D communication data (DTCH channel) with the process D2D UE through radio resource management (RRM) algorithm. 这种资源分配方式可以确保D2D系统和蜂窝系统的控制信令之间没有干扰。 This resource allocation can be ensured without interference between the control system and the signaling D2D cellular system. 原则上,LTE系统的PUCCHs资源也可以与D2D通信复用资源。 In principle, PUCCHs system resources for LTE D2D communication may be with the multiplexing resources.

[0081] 本实施例中所述的F1DCCH即物理下行控制信道,全称Physical Downlink ControlChannel ;PUCCH 即物理上行控制信道,全称Physical Uplink Control Chennel ;PUSCH 即物理上行共享信道,全称Physical Uplink Share Channel ;PRACH即物理随机接入信道,全称Physical Random Access Channel。 F1DCCH [0081] In the embodiment of the present embodiment, i.e., a physical downlink control channel, the full name Physical Downlink ControlChannel; PUCCH physical uplink control channel i.e., the full name Physical Uplink Control Chennel; PUSCH physical uplink shared channel, i.e., full name Physical Uplink Share Channel; PRACH i.e. physical random access channel, the full name of physical random access channel.

[0082] 这里对多个D2D发送-接收UE对之间的资源竞争进行补充介绍,具有RTS/CTS的时隙Aloha(SSARC),参照图5,示出了多个D2D发送-接收UE对之间的资源竞争的示意图;第一对D2D用户,也即D2D对1,和D2D对2在相隔较近且使用相同资源时将要互相干扰。 [0082] Send a plurality of D2D - receiving a resource conflict between the UE supplement introduced with RTS / CTS slot Aloha (SSARC), with reference to FIG. 5, there is shown a plurality of D2D transmission - reception of the UE competition for resources among a schematic view; D2D to a first user, i.e. D2D pair 1, 2 and D2D to interfere with each other to be spaced closer and when using the same resources. 因此,他们将在CCCH信道上进行握手过程,实现资源的争用。 Therefore, they will handshake in CCCH channel to achieve contention for resources. D2D对3距离D2D对I和D2D对2较远,因此将不会对D2D对I和D2D对2的数据传输构成干扰,即使他们使用相同的时频资源进行传输。 D2D D2D distance of 3 to 2 on the I and D2D far, therefore I will not D2D pair D2D and 2 constituting the data transmission interference, even when they use the same frequency resource for transmission.

[0083] 在具体实现握手和数据传送时,实现步骤具体为=TxUE在CCCH上发送RTS命令表明有数据要发送,这个信令同时也是基于争用机制的,周围的多个要发送数据的D2D终端同时发送RTS信令进行数据信道的竞争和抢占。 [0083] In specific implementation of handshaking and data transfer, particularly for the implementation steps RTS = TxUE command transmitted on the CCCH has data to transmit show, this is also the contention-based signaling mechanisms, the plurality of data to be sent around the D2D RTS terminals simultaneously transmitting signaling data channel competition and preemption. 这个信令中应该包括TxUE和RxUE的ID,有时还可以包括RTS的发送功率,以便让RxUE能够检测出这条信道的质量;如果RxUE能够在无碰撞的情况下接收到RTS信号,则还是在这个CCCH信道上反馈给TxUE —个CTS信号,否则将不向TxUE反馈任何消息。 This signaling should include TxUE and RxUE the ID, sometimes further includes a transmission power RTS in order to allow RxUE possible to detect the quality of this channel; if RxUE capable of receiving the RTS signal at a collision-free case, or in the CCCH channel is fed back to TxUE - a CTS signal, otherwise it would not feedback any messages to TxUE. 在CTS信令中应该包括TxUE和RxUE的ID,还可以包括RxUE计算出来的信道质量指示符(CQI)信息,以便TxUE进行D2D的无线资源管理;正确地从RxUE接收到CTS信令意味着TxUE已经获得了在相应的TTI给RxUE发送数据的权利。 Should be included in the CTS signaling RxUE TxUE and the ID, you can further comprise RxUE calculated channel quality indicator (CQI) information, performs radio resource management for TxUE the D2D; RxUE correctly received from the CTS signaling means TxUE RxUE claimed to have been obtained in the corresponding data transmission TTI. 否则,如果RxUE没有向TxUE反馈CTS信令,或者发生CTS信令碰撞的情况,TxUE将退避一段时间后再发送RTS信令。 Otherwise, if there is no feedback RxUE CTS signaling to TxUE, or in the case of CTS signaling collision occurs, TxUE will retreat after a period of time to send RTS signaling. 退避的时间是在一个基本值TO基础上的随机值。 Backoff time base value is a random value in the TO base. 如果又一次发生由于碰撞或者在规定时间内接收不到CTS信令的情况,TO将被增加。 If a collision occurs again or not CTS signaling is received within a predetermined time, TO will be increased. 相反,如果成功收到了CTS信令,那么TO将被减少,作为下一次退避算法的依据。 Conversely, if successfully received CTS signaling, the TO will be reduced, as the basis for the next backoff algorithm. 这样,即使在该区域中有多对D2D传输对,他们的竞争也可以被控制;当TxUE成功地从RxUE接收到CTS后,TxUE将给RxUE发送数据。 Thus, even if the transmission of a plurality of D2D in this region, they are competitive also be controlled; when TxUE successfully received from RxUE to the CTS, will RxUE TxUE transmission data. 发送数据的信道不是在CCCH上,而是通过与蜂窝系统复用资源在DTCH信道上发送。 Channel data is not transmitted in the CCCH, DTCH channel but transmitted in a cellular system by multiplexing resources. 与数据发送有关的控制信令(包括数据调制编码方式,资源复用情况等)将由D2D系统的RRM分配,在DCCH上发送;RxUE将向TxUE发送ACK/NACK来反馈收到的数据的状态,这是TxUE决定是否进行数据重传的依据(MAC层的HARQ或者RLC层的ARQ)。 For transmitting control signaling (including data modulation and coding scheme, etc. where the multiplexing resources) allocated by the RRM D2D system transmits data on a DCCH; RxUE state will send ACK / NACK feedback to the received data TxUE, this is the basis for deciding whether TxUE data retransmission (ARQ HARQ MAC layer or RLC layer).

[0084] 通过上面所述的步骤进行握手具有的优点有:eNB广播D2D CCCHs的资源,基于此,在小区中的所有D2D用户都能共享该CCCHs信道进行D2D传输的握手过程及争用;D2DCCCHs遵循与蜂窝系统相同的帧结构和时隙关系,因此就不再需要CSMA/CA中的DIFS和SIFS来进行侦听了,这样就提高了系统的资源使用效率,通过使用RTS/CTS的资源竞争原理,能够有效避免相距较近的D2D通信对之间的干扰。 [0084] The advantages of having a handshake by the above steps of: eNB D2D CCCHs broadcast resources, based on this, all users in a cell D2D can share the channel handshake CCCHs D2D transmission and contention; D2DCCCHs cellular system follows the same frame structure and slot relationships, there is no longer need for CSMA / CA of the DIFS and SIFS to the listener, thus improving the efficiency of use of system resources, by using the RTS / CTS resource contention principle, possible to effectively avoid interference between closely spaced D2D communication pair. 同时,也能够使得对蜂窝系统的干扰最小。 At the same time, so that it is possible to minimize interference with the cellular system. 同时,D2D用户的发送功率得到了节省。 Meanwhile, D2D transmission power user has been saving. 另外,如果蜂窝用户与D2D用户之间的距离足够大,二者之间的数据传输资源可以复用,这样可以显著提高系统的频率效率和吞吐量。 Further, if the distance between the user and the cellular user D2D large enough, data transmission resources can be multiplexed between the two, which can significantly improve the frequency efficiency and the throughput of the system.

[0085] 这里对时隙进行具体介绍,实际工作中TxUE和RxUE都需要时间来处理D2D CCCHs上的信令并且进行反馈。 [0085] Here we will be specifically described time slot, and the actual work TxUE RxUE need time to process the signaling and the feedback D2D CCCHs. 特别地,由于数据传输和接收是很耗时的,RTS/CTS、数据传输控制信令(Data C trl)以及ACK/NACK之间的时间间隔一般都比较大。 Particularly, since the data transmission and reception is very time consuming, RTS / CTS, data transfer control signaling (Data C trl) and the time between an ACK / NACK spacing is generally greater. 然而,众所周知,不同的UE其硬件处理的能力不同,因此需要的处理数据和信令的时间也不同。 However, it is well known, different capabilities of different UE processing hardware, and therefore the time required to process data and signaling are different. 如果对所有D2D用户而言这几种控制信令的时间关系不同的话,势必将造成数据发送和信令之间的碰撞。 If different D2D for all users of the time these types of control signaling, is bound to cause a collision between data transmission and signaling. SSARC同步的特征将要解决这个问题,即这几种信令之间的时间间隔是由eNB提前规定好的,所有D2D用户必须严格遵守。 SSARC synchronization features will to solve this problem, that is, the time between these types of signaling interval is defined by the eNB good advance, all D2D users must be strictly observed. eNB通过广播信道或者CCCH向所有D2D用户广播这种时间关系,因为这些信令是同步的,因此将不会发生异常的碰撞。 eNB via the broadcast channel or the time CCCH this broadcast to all users D2D, because the signaling is synchronous, and therefore will not collide occurrence of an abnormality. SSARC另一个重要的特征是D2D UE能够利用蜂窝系统的信令和消息来实现D2D系统的RRM。 Another important feature is SSARC D2D UE signaling and messages can be utilized to achieve cellular system D2D system RRM. 一旦发送RTS,TxUE就能确定发送数据的精确时间。 By sending RTS, TxUE able to determine the precise time of transmission data. 在蜂窝系统里,比如在LTE系统中,在HXXH上的上行资源分配和数据传输之间的时隙也是恒定的(一般是4个TTIs,一个TTI代表一个时隙),因此D2D UE就能容易地知道eNB何时发送UL资源分配消息给蜂窝用户。 In cellular systems, such as in the LTE system, the time slots between the uplink resource allocation and data transmission on HXXH is constant (and typically four TTIs, one TTI represents a time slot), and therefore can be easily D2D UE eNB knows when to transmit UL resource allocation message to the cellular user. 而蜂窝用户将与D2D的TxUE在相同的帧上同时发送数据,以达到复用资源和提高频谱使用效率的目的。 And cellular users simultaneously transmit data on the same frame with the D2D TxUE, multiplexing resources in order to achieve spectral efficiency and use. 因此, 如果可能,D2D UE将要尽量从蜂窝系统中译出蜂窝用户的UL资源分配信息以及其他有关信令,以帮助自己实现D2D RRM。 So, if possible, D2D UE will try to decode the UL resource allocation information, and other relevant cellular subscriber signaling from the cellular system to help them achieve D2D RRM.

[0086] 实际工作中,RTS/CTS在CCCH信道上传输,DataCtrl以及ACK/NACK在DCCH上传输,而D2D的数据在DTCH信道上传输,而DTCH又与蜂窝系统的PUSCH复用资源。 [0086] In practice, RTS / CTS transmission channel CCCH transmission, DataCtrl and ACK / NACK on the DCCH, the DTCH D2D data transmission channel, and the DTCH multiplexing with PUSCH resource cellular system.

[0087] 需要说明的是,在eNB在发了UL MAP后,UE将会在第4个时隙进行数据发送;而根据本发明的设计,D2D UE也将在第4时隙进行数据发送,进而能够完全实现两个系统之间的无干扰传输。 [0087] Incidentally, in the hair of the UL MAP, UE will be in the fourth time slot in data transmission eNB; the design according to the invention, D2D UE will transmit the data in the fourth slot, Further fully interference-free transmissions between the two systems. 整个时隙关系都是对应于LTE系统的时隙关系,而不是像在802. 11网络中的那种完全无序的杂乱的时隙,这样,在以下的过程将将不再需要任何帧间间隔进行同步以及避免碰撞。 Entire slot corresponding to the slot relationships are relationships of the LTE system, rather than the kind 802.11 network completely disordered messy slot, so that, in the following procedure will not need any inter interval synchronization and avoid a collision. 由于整个混合网络遵循LTE系统的时隙关系,一旦一对D2D终端抢占到资源,在接下来的一系列对应时隙中,只有这一对D2D UE在使用这个资源,直至传输结束,而不会受到其他D2D传输对的干扰。 Since the entire mixing time slots follow the relationship network of the LTE system, once one pair D2D terminal to seize resource corresponding time slot in the next series, only the use of D2D UE in the resource until the end of the transmission, without D2D interference to other transmission pair.

[0088] 在D2D UE对中,TxUE为发送UE' RxUE为接收UE'则按照LTE的时隙,整个的随机接入和数据发送的过程为:在TTI1,TxUE在CCCH上的某个子资源(假设为fl,tl)上向RxUE发送RTS (即数据请求信令);在TTI2,RxUE无碰撞地接收到这个信息,并准备好发送CTS (即可以发送数据的信令);在1'113,1^服向TxUEl发送CTS ;在TTI4,TxUE无碰撞地收到CTS,表明这一对D2D UE对已经占用了这个资源,在接下来的一系列对应时隙中,将不可能有其他的D2D终端对会对这一对D2D造成干扰;在TTI5内,TxUE对接收到的来自于eNB的UL MAP进行译码,获悉可以在哪个资源块上进行数据发送,同时,蜂窝小区的UE也将使用相同的资源块进行数据发送,而这时这两个系统之间绝不会产生干扰。 [0088] D2D UE pairs, to transmit TxUE UE 'RxUE to receive UE' according to the LTE time slot, and the overall random access process to transmit data in: In TTI1, TxUE a child resources on the CCCH ( the assumed fl, tl) sends RxUE RTS (request signaling i.e., data); in TTI2, RxUE without collision receiving this information, and ready to send CTS (i.e., signaling data may be transmitted); at 1'113 , 1 ^ clothes to send CTS TxUEl; in TTI4, TxUE CTS received without collision, indicating that this pair D2D UE already taking up this resource in the next series of the corresponding time slot, will not have other D2D terminal would cause interference to the D2D; in TTI5, TxUE UL MAP received from the eNB is decoded, the data transmission can be informed on which resource block, while, the UE will also cell using the same resource block for data transmission, but then interference will not occur between the two systems. 注意,eNB在每个时隙都将发送UL MAP信息,所以不会出现TxUE找不到UL MAP的情况;在第TTI5到TTI7这三个时隙内,是TxUE译UL MAP,并且找到可用资源,以及准备要发送的数据的过程(包括对数据进行调制、编码、加密等过程),根据我们的经验以及现有终端的处理能力,3个TTI足够用了;在1'118,TxUE向RxUE在DTCH上发送数据,使用的资源是在上一步中找到的可用资源,而这时还有蜂窝小区的UE也将在TTI8同时同频向eNB发送上行数据,(即D2D的DTCH与蜂窝系统的PUSCH信道复用相同资源),这两种系统之间绝不会产生干扰,进而实现了高效的资源的复用;同时,TxUE还将在DCCH上向RxUE发送数据的控制信息,主要是发送数据的编码及调制信息,以帮助RxUE在接收到数据后进行解调和译码;在TTI12,RxUE收到数据后,在DCCH上反馈ACK/NACK信息,表明成功收到或者没有成功收到TxUE发送 Note, eNB will be sent in each time slot UL MAP information, so the situation can not find TxUE UL MAP does not appear; in the first TTI5 to TTI7 three slots, is TxUE translation UL MAP, and to find the resources available and the process of preparing the data to be transmitted (including the data modulation, coding, encryption process), according to our experience and processing capability of existing terminals, the use enough TTI 3; at 1'118, TxUE to RxUE DTCH data transmission on the resource usage of the available resources found in the previous step, but this time there cell UE will also send the same frequency in the uplink data to the eNB TTI8, (i.e., DTCH and the D2D cellular system PUSCH channel reuse the same resources), interference will not occur between the two systems, thus achieving an efficient reuse of resources; Meanwhile, TxUE also transmits control information to the data in the DCCH RxUE, data are transmitted. coding and modulation information to help RxUE to demodulate and decode after receiving the data; after TTI12, RxUE received data, ACK / NACK feedback information over the DCCH, indicating a successful or not successfully received transmission received TxUE 的消肩、O Erasing shoulder, O

[0089] 其中,之所以单独划出DCCH来传输数据控制信令及ACK/NACK信令,而不是仍然在CCCH上方进行传输,是为了防止之后的D2D UE传输对发送的RTS/CTS信令与正在传输的D2D UE对发送的数据控制信令及ACK/NACK信令发生碰撞。 [0089] wherein, the reason why a separate draw DCCH to transmit data and control signaling ACK / NACK signaling, and not yet transmitted over the CCCH, transmitted a D2D UE to prevent subsequent transmitted RTS / CTS and signaling D2D UE is being transferred to the control signaling and data transmitted ACK / NACK signaling collision. 这里假设TxUE与RxUE之间没有碰撞,如果出现了碰撞,则随机退避一段时间后再发起请求,其余步骤与上述描述相同。 It is assumed that no collision between TxUE RxUE and, if a collision occurs, random backoff period of time after the initiation request, the remaining steps are the same as described above. 这里是以一对TxUE和RxUE为例进行说明。 Here are a pair of TxUE and RxUE example. 实际情况很可能是在TTI2又有一对TxUE和RxUE成功抢占到信道可以进行D2D发送,那么他们的时隙关系就整体顺延I个TTI,而数据发送与接收之间的对应时隙间隔不变。 The actual situation there is likely to be one pair in TTI2 TxUE and RxUE successfully seized the channel may be transmitted D2D, their relationship to the slot the I whole extended the TTI, the corresponding time slot but the data transmission and reception between the same interval. 可以看出,这种实现方法中无线频谱资源的使用效率得到大大提高,而这种情况在单一的蜂窝系统或者单一的基于具有或者没有RTS/CTS的CSMA/CA系统中是不可能达到的。 As can be seen, this implementation use efficiency of radio spectrum resources is greatly improved, and this situation is based on CSMA / CA system with or without RTS / CTS is impossible to achieve in a single cellular system or at a single. 需要说明的是,本实施例中所述的方法,也实现结合较紧密,连贯起来更易进行理解。 Incidentally, the method described in this embodiment, be implemented in conjunction with a tighter, more coherent be understood.

[0090] 实施例二: [0090] Example II:

[0091] 参照图6,示出了本发明的一种基站辅助的移动终端设备自主接入的装置,所述装置包括: [0091] Referring to FIG. 6, there is shown an apparatus independent access to the base station of the present invention, the auxiliary mobile terminal device, the apparatus comprising:

[0092] 请求信令发送模块601,用于发送机给接收机发送请求信令;所述请求信令包括发送机的ID以及接收机的ID ; [0092] Request signaling sending module 601, a transmitter to a receiver for the transmission request signaling; signaling includes the request ID transmitter and ID receiver;

[0093] 可发送信令回馈模块602,用于接收机正确接收到请求信令后,回馈可发送信令给发送机; [0093] The feedback module 602 can send signaling, a receiver for correctly receiving the request signaling, the signaling may be sent back to the transmitter;

[0094] 可用资源获取模块603,用于发送机接收到可发信令后,从基站发送的上行资源分配信息中获取当前发送数据可用的资源;所述基站发送的上行资源即为LTE系统中的上行资源; [0094] The available resources acquisition module 603, a transmitter for the signaling may be received, acquires the current resources available to transmit data from the uplink resource allocation information from the base station; and the base station sending the uplink resource is the LTE system uplink resources;

[0095] 数据传送模块604,用于用所获取的可用资源进行数据传送。 [0095] The data transmission module 604 for performing data transfer with the available resources accessed.

[0096] 优选的,所述装置还包括: [0096] Preferably, the apparatus further comprising:

[0097] 比较模块605,用于发送机将所获取的可用资源的功率值与预设阀值进行比较; [0097] The comparison module 605, power value comparing available resources for transmitting the acquired machine with a preset threshold value;

[0098] 选取模块606,用于根据比较结果选取干扰小的可用资源。 [0098] selection module 606 for selecting small interfering available resources according to the comparison result.

[0099] 优选的,所述装置还包括: [0099] Preferably, the apparatus further comprising:

[0100] 信道定义模块607,用于定义公共控制信道、数据控制信道和数据业务信道。 [0100] channel definition module 607 for defining common control channel, data channel, and traffic channel data.

[0101] 优选的,所述装置还包括: [0101] Preferably, the apparatus further comprising:

[0102] 处理模块608,用于在接收机未回馈可发送信令给发送机时,发送机退避预设时间段后再次发送请求信令。 [0102] Processing module 608, for feedback when the receiver can not send signaling to the transmitter, the transmitter after a preset period of time backoff request signaling sent again.

[0103] 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。 [0103] In the present specification, various embodiments are described in a progressive way, differences from the embodiment and the other embodiments each of which emphasizes embodiment, various portions of the same embodiment of similarity between the embodiments refer to each other. 对于装置实施例而言,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。 For the apparatus of the embodiment, since the method of the embodiment which is substantially similar, the description is relatively simple, the relevant part of the embodiment of the method embodiments to be described.

[0104] 以上对本发明所提供的一种基站辅助的移动终端设备自主接入的方法和装置进行了详细介绍,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的方法及其核心思想;同时,对于本领域的一般技术人员,依据本发明的思想,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。 [0104] The foregoing method and apparatus of a base station assisted present invention provides a mobile terminal device autonomously access described in detail herein through specific examples of the principles and embodiments of the invention are set forth in the above embodiment the description is intended to help understand the method and core idea of ​​the present invention; while those of ordinary skill in the art, according to the ideas of the present invention, there are changes in the specific embodiment and application of the embodiment, the sum described later, the present specification shall not be construed as limiting the present invention. · ·

Claims (8)

  1. 1. 一种基站辅助的移动终端设备自主接入的方法,其特征在于,所述方法包括: 发送机给接收机发送请求信令;所述请求信令包括发送机的ID以及接收机的ID ; 接收机正确接收到请求信令后,回馈可发送信令给发送机; 发送机接收到可发信令后,从基站发送的上行资源分配信息中获取当前发送数据可用的资源;所述基站发送的上行资源即为LTE系统中的上行资源; 用所获取的可用资源进行数据传送。 A method of a base station assisted mobile terminal autonomous access, wherein, said method comprising: a transmitter to a receiver sends a signaling request; signaling the request ID includes a transmitter and a receiver of ID ; the receiver correctly receives the request signaling, the signaling may be sent back to the transmitter; transmitter after receiving the signaling may acquire the current resources available to transmit data from a base station transmits uplink resource allocation information in; the base station is the uplink resource of the uplink transmission resources in the LTE system; available resource for data transmission using the acquired information.
  2. 2.根据权利要求I所述的方法,其特征在于,所述方法在用所获取的可用资源完成数据的传送前还包括: 发送机将所获取的可用资源上的接收信号功率值与预设阀值进行比较; 根据比较结果选取干扰小的可用资源。 2. The method as claimed in claim I, wherein said method is completed before transmission of the data available in the resource further comprises using the obtained: received signal power with a preset value transmitter on the acquired resources available comparing threshold; small interfering select resources available to the comparison result.
  3. 3.根据权利要求I所述的方法,其特征在于,所述方法在基站发送上行分配信息前还包括: 定义三个新的与LTE系统具有相同的频率资源与时隙结构的物理信道,分别为公共控制信道、数据控制信道和数据业务信道。 3. The method as claimed in claim I, wherein, prior to said transmitting method in a base station uplink allocation information further comprises: defining three new frequency resources and have the same slot structure and the LTE system, a physical channel, respectively for the common control channel, data channel, and traffic channel data.
  4. 4.根据权利要求I所述的方法,其特征在于: 若接收机未回馈可发送信令给发送机,则发送机退避预设时间段后再次发送请求信令。 4. The method of claim I, wherein: when the receiver can not send feedback signaling to the transmitter, the transmitter after a preset period of time backoff request signaling sent again.
  5. 5. 一种基站辅助的移动终端设备自主接入的装置,其中特征在于,所述装置包括: 请求信令发送模块,用于发送机给接收机发送请求信令;所述请求信令包括发送机的ID以及接收机的ID ; 可发送信令回馈模块,用于接收机正确接收到请求信令后,回馈可发送信令给发送机; 可用资源获取模块,用于发送机接收到可发信令后,从基站发送的上行资源分配信息中获取当前发送数据可用的资源;所述基站发送的上行资源即为LTE系统中的上行资源;数据传送模块,用于用所获取的可用资源进行数据传送。 Access means independent of the auxiliary base station A mobile terminal device, wherein characterized in that said apparatus comprises: a request signaling sending module, configured to send a transmission request signaling to a receiver unit; sending said request signaling comprises ID and a receiver ID of the machine; feedback module may send signaling, a receiver for correctly receiving the request signaling, the signaling may be sent back to the transmitter; available resources acquisition module, for receiving the transmitter can send after signaling and acquires the current resources available to transmit data from a base station transmits uplink resource allocation information in; uplink resource of the uplink resource from the base station is the LTE system; data transmission module for the available resources accessed by data transmission.
  6. 6.根据权利要求5所述的装置,其特征在于,所述装置还包括: 比较模块,用于发送机将所获取的可用资源上的接收信号的功率值与预设阀值进行比较; 选取模块,用于根据比较结果选取干扰小的可用资源。 6. The apparatus as claimed in claim 5, characterized in that said apparatus further comprising: a comparison module for comparing the power value of the received transmitter signals on the resources available on the acquired threshold value is compared with a preset; select means for selecting small interfering available resources according to the comparison result.
  7. 7.根据权利要求5所述的装置,其特征在于,所述装置还包括: 信道定义模块,用于定义三个新的与LTE系统具有相同的频率资源与时隙结构的物理信道,分别为公共控制信道、数据控制信道和数据业务信道。 7. The apparatus as claimed in claim 5, characterized in that said apparatus further comprises: a channel definition means for defining three new LTE system has the same physical channel frequency and time slot structure of the resources, respectively, common control channel, data channel, and traffic channel data.
  8. 8.根据权利要求5所述的装置,其特征在于,所述装置还包括: 处理模块,用于在接收机未回馈可发送信令给发送机时,发送机退避预设时间段后再次发送请求信令。 After a predetermined period of time a transmitter retransmission backoff processing module, when the receiver is not available for signaling sent back to the transmitter: 8. The device as claimed in claim 5, characterized in that said apparatus further comprises request signaling.
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