CN105491637B - Based on the best position search method and system for relaying fixed step mobile relay - Google Patents

Based on the best position search method and system for relaying fixed step mobile relay Download PDF

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CN105491637B
CN105491637B CN 201510898373 CN201510898373A CN105491637B CN 105491637 B CN105491637 B CN 105491637B CN 201510898373 CN201510898373 CN 201510898373 CN 201510898373 A CN201510898373 A CN 201510898373A CN 105491637 B CN105491637 B CN 105491637B
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relay
position
communication
performance
best
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CN 201510898373
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CN105491637A (en )
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谢宁
陈敬坤
王晖
林晓辉
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深圳大学
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks
    • Y02D70/30Power-based selection of communication route or path
    • Y02D70/39Power-based selection of communication route or path using selective relaying for reaching a BTS [Base Transceiver Station] or an access point

Abstract

本发明公开了种基于固定步长的移动中继最佳中继位置搜寻方法及系统,该方法包括:移动中继接收源端发送的测试信号,放大后转发给目的端,目的端根据放大的测试信号计算通信性能,并与保存的最佳已知位置的通信性能进行比较后生成比特信息反馈给移动中继,移动中继根据这比特信息及预置的固定步长移动到下个中继位置,再次执行接收源端发送的测试信号的步骤,直至确定最佳中继位置。 The present invention discloses a kind of mobile based fixed step search method and system relay location best relay, the method comprising: receiving a mobile relay sends the test signal source, the amplified forwarded to the destination, the destination of the enlarged after testing communication performance calculation signal, and compared with the known location of the best communication performance to generate the bit stored information back to the mobile relay, mobile relay in accordance with this bit information and preset fixed step moves to the next repeater position, a test step receives a source signal terminal transmitted again until the relay to determine the optimum position. 该方法可提高中继通信的性能,且无需获得源端和目的端的位置信息,无需多天线,且只需要目的端反馈比特信息给移动中继进行搜寻控制,依然可在预定轨迹范围内确定最佳中继位置点,扩大了适用范围。 The relay communication method can improve the performance of, and without obtaining the position information of the source and destination, without a multi-antenna, and only the destination information search control feedback bits to the mobile relay, may still determine the most within a predetermined range of the trajectory Jia relay location and the expansion of the scope of application.

Description

基于固定步长的移动中继最佳中继位置搜寻方法及系统 Based on the best position search method and system for relaying fixed step mobile relay

技术领域 FIELD

[0001] 本发明涉及无线通信技术领域,尤其涉及一种基于固定步长的移动中继最佳中继位置搜寻方法及系统。 [0001] The present invention relates to the field of wireless communication technology, particularly to a mobile based fixed step relay best relay position search method and system.

背景技术 Background technique

[0002] 通信中继可以用来转发不同的节点之间发出的信息,扩大了通信范围,提高了通信系统的性能。 [0002] The communication relay to forward the information sent between different nodes, to expand the communication range, to improve the performance of communication systems. 陆地无线电通信容易被障碍物遮挡和屏蔽,飞机、卫星及无人机(UVAs)可以充当通信中继,因为机载中继可以在崎岖的山区或者市区有效地为需要互相通信的双方建立起连接。 Terrestrial radio communication is easily blocked by obstacles and shield, aircraft, satellites and unmanned aerial vehicles (UVAs) can act as a communications relay, because the on-board relay can effectively communicate with each other as both sides need to build in the rugged mountainous areas or urban areas connection.

[0003] 现有技术中,应用于无人机确定中继位置的方式主要有:利用全球定位系统(GPS, Global Posinioning Sysnem)测量地面通信单元的位置信息,无人机利用GPS搜寻最佳中继位置,以及基于扰动的极值搜索控制算法、基于多载天线的算法等等。 [0003] In the prior art, be applied to determine the intermediate position UAV main ways: measuring the position information of the terrestrial communication unit using the global positioning system (GPS, Global Posinioning Sysnem), the search for the best use of GPS UAV following the position, based on disturbances extremum seeking control algorithm, an algorithm based on multi-carrier antenna and so on.

[0004] 但在以上现有技术中,存在一定的不足和缺陷,主要体现在: [0004] However, the above prior art, there are some disadvantages and drawbacks, mainly in:

[0005] 1、地面通信单元需要利用自身的GPS功能测量自己的位置信息并把该信息发送给无人机,依赖GPS功能容易受到攻击和干扰而导致位置搜寻失败; [0005] 1, need to use the terrestrial communication unit function of measuring its own GPS position information and transmits the information to the UAV, the GPS function dependent vulnerable position and interference caused search failed;

[0006] 2、对于没有GPS功能或者GPS设备已损坏的地面通信单元,现有的一些技术无法使用,即现有的确定中继位置的技术使用受限; [0006] 2, to the GPS device without GPS or terrestrial communication unit is damaged, some of the prior art can not be used, i.e., a conventional technique used to determine the position of the relay is limited;

[0007] 3、使用机载多天线信号到达角(D0A,Direcnion of Arrival)进行估计来确定最佳中继位置,相对于单天线容易出现估计误差,同时也增加了无人机通信设备的复杂度和算法复杂度。 [0007] 3, using airborne multi-antenna signal angle of arrival (D0A, Direcnion of Arrival) estimation to determine the best position of the relay, with respect to the estimation error prone single antenna, but also increases the complexity of the communication device UAV and the degree of complexity of the algorithm.

发明内容 SUMMARY

[0008] 本发明实施例提供了一种基于固定步长的移动中继最佳中继位置搜寻方法及系统,通过对比在不同位置的通信性能来确定移动中继的最佳中继位置,以提高确定移动中继最佳中继位置的效率和准确率,以及增加适用范围。 [0008] Example embodiments provide a mobile based fixed step relay best relay position search method and system to determine the best position of the relay mobile relay communication performance in different positions by comparing the present invention to improve the efficiency and accuracy of determining the optimum mobile relay location a relay, and increasing the scope of application.

[0009] 本发明实施例公开的一种基于固定步长的移动中继最佳中继位置搜寻方法包括: One kind of embodiment of the disclosed embodiment [0009] of the present invention is best fixed step mobile relay location a relay-based search method comprising:

[0010] 步骤A,移动中继在固定轨道的任意位置上,接收来自源端发送的测试信号,并放大转发至目的端; [0010] Step A, the mobile relay at an arbitrary position on the fixed rail, receiving the test signal transmitted from the source terminal, and amplifying forwarded to the destination;

[0011] 步骤B,所述目的端接收所述移动中继发来的信号并计算本次通信性能,所述通信性能包括信噪比、误码率,并根据计算结果与已保存的最佳已知中继位置的通信性能进行比较,并生成一比特信息反馈至所述移动中继,所述一比特信息表示当前通信性能与已保存的最佳已知中继位置的通信性能的比较结果,所述最佳已知中继位置为已测试的通信性能最好的位置; [0011] Procedure B, the destination secondary to the received signal and calculates the current mobile communication performance, the communication performance noise ratio, bit error rate, and the calculation results and saved best communication performance by comparing the known position of the relay, and generates a feedback bits to the mobile relay, the one-bit information indicating a comparison result of the communication performance and communication performance saved current best known position of the relay the best known position of the relay communication performance tested best location;

[0012] 步骤C,所述移动中继记录当前位置信息并根据所述一比特信息及预置的固定步长移动到下一个中继位置,并返回步骤A,直至最终确定最佳中继位置,所述最佳中继位置为:在预设的搜寻时长内通信性能最好的位置,或者,所述移动中继移动完整个所述固定轨道时通信性能最好的位置,或者,所述通信性能满足系统设定要求的位置。 [0012] Procedure C, the mobile relay recording in accordance with current position information and moves further to the one-bit fixed length information and preset to the next relay location, and returns to step A, to a final position to determine the best repeater the optimum position for the relay: length in the best position within a predetermined communication performance when searching, or, the position of the mobile communication best performance when a full-relaying the fixed rail, or the communication system to meet the performance requirements set position.

[0013] 本发明实施例公开的一种基于固定步长的移动中继最佳中继位置搜寻系统包括: One kind of embodiment of the disclosed embodiment [0013] of the present invention is fixed step best relay mobile relay location based search system comprising:

[0014] 移动中继、源端和目的端; [0014] Mobile relay, the source and destination;

[0015] 其中,所述移动中继在固定轨道的任意位置上,接收来自所述源端发送的测试信号,并放大转发至所述目的端; [0015] wherein, the mobile relay at an arbitrary position on the fixed rail, the source of the received test signal transmitted from the terminal, and amplifies forwarded to the destination terminal;

[0016] 所述目的端接收所述移动中继发来的信号并计算本次通信性能,所述通信性能包括信噪比、误码率,并根据计算结果与已保存的最佳已知中继位置的通信性能进行比较,并生成一比特信息反馈至所述移动中继,所述一比特信息表示当前通信性能与已保存的最佳已知中继位置的通信性能的比较结果,所述最佳已知中继位置为已测试的通信性能最好的位置; [0016] The object of the mobile terminal in the received signal and to calculate the secondary current communication performance, the communication performance noise ratio, bit error rate, and the calculation results of the best known and saved in following communication performance compares position, and generates a feedback bits to the mobile relay, a bit of the comparison result information indicates that the current communication performance and communication performance saved best known position of the relay, the best known as the best relay location position of the communication performance tested;

[0017] 所述移动中继记录当前位置信息并根据所述一比特信息及预置的固定步长移动到下一个中继位置,并返回执行步骤移动中继在固定轨道的任意位置上,接收来自所述源端发送的测试信号,并放大转发至所述目的端,直至最终确定最佳中继位置,所述最佳中继位置为:在预设的搜寻时长内通信性能最好的位置,或者,所述移动中继移动完整个所述固定轨道时通信性能最好的位置,或者,所述通信性能满足系统设定要求的位置。 [0017] The current location information of the mobile relay recording length and moves to the next relay location a bit according to the preset information and the fixing step, and returning to step mobile relay in an arbitrary position on the fixed rail, receiving from the test signal sent by the source, and amplifying forwarded to the destination terminal, to determine the best repeater to a final position, the optimum position of the relay: search for the best position within a length of a preset communication performance or, the best position of the mobile communication complete performance of said mobile relay fixed rail, or the performance of the communication system to meet the requirements set position.

[0018] 从以上技术方案可以看出,本发明实施例具有以下优点:通过利用固定的扰动步长及通信性能强度来搜寻移动中继的最佳中继位置,可提高中继通信的性能,而不需要依赖源端和目的端的位置信息,无需多天线,且只需目的端反馈一比特信息给移动中继控制其搜寻最佳中继位置,应用范围更广,适用性更强且受限小,提高确定最佳中继位置的效率和准确性。 [0018] As can be seen from the foregoing technical solutions, embodiments of the present invention has the following advantages: to search for the best position of the relay mobile relay by using a fixed step disturbance communication performance and strength, can improve the performance of the relay communication, without relying on source and location information of the destination terminal, without a multi-antenna, and only one destination bit feedback information to the mobile relay control its search for the best position of the relay, a wider range of applications, and more limited applicability small, to improve the efficiency and accuracy of determining the optimal position of the relay.

附图说明 BRIEF DESCRIPTION

[0019] 图1为本发明第一实施例中的基于固定步长的移动中继最佳中继位置搜寻方法的流程示意图; [0019] FIG. 1 is a schematic flow-based fixed step method of searching for the optimum position of the relay mobile relay in the first embodiment of the present invention;

[0020] 图2为本发明实施例中移动中继中继通信模型示意图; [0020] FIG. 2 is a schematic embodiment of a mobile relay communication relay model embodiment of the present invention;

[0021] 图3a、3b为本发明实施例中移动中继基于信噪比搜寻最佳中继位置的仿真图; [0021] Figures 3a, 3b FIG oriented mobile relay simulation based search for the best signal to noise ratio of the relay location invention embodiment;

[0022] 图4a、4b为本发明实施例中移动中继基于误码率搜寻最佳中继位置的仿真图; [0022] Figures 4a, 4b of the present embodiment, the mobile relay based on simulation of the BER FIG searching the best embodiment of the invention the position of the relay;

[0023] 图5为本发明第二实施例中的基于固定步长的移动中继最佳中继位置搜寻系统结构示意图。 [0023] FIG. 5 is a schematic-based fixed step search position best relay mobile relay system configuration in the second embodiment of the present invention.

具体实施方式 detailed description

[0024] 本发明实施例提供了一种基于固定步长的移动中继最佳中继位置搜寻方法及系统,配置单天线的移动中继根据通信性能强度及固定步长搜寻最佳中继位置点,从而提高中继通信的性能,且无需获得地面的位置信息,依然可在预定轨迹范围内确定最佳中继位置点,扩大了适用范围。 [0024] Example embodiments provide a mobile based fixed step relay best relay position search method and a system configured single best relay mobile relay antenna position in accordance with a communication performance and fixing strength of the present invention, the search step point, thereby improving the performance of the relay communication, and need not obtain location information of the ground, may still determine the optimum position of the relay points within a predetermined range of the track, to expand the scope of application.

[0025] 本发明实施例适用于固定的中继运动轨道,应用场景可以是临时通信系统的搭建、灾害现场的通信连接等场景。 [0025] Example embodiments of the present invention is applicable to a fixed path of movement of the relay, the application scenario may be a temporary communication system structures, and the like disaster site communication connection scenarios.

[0026] 请参阅图1,本发明第一实施例提供的基于固定步长的移动中继最佳中继位置搜寻方法,包括以下步骤: [0026] Referring to FIG. 1, a first embodiment of the present invention provides the best fixed step mobile relay location a relay-based search method, comprising the steps of:

[0027] 步骤A、移动中继在固定轨道的任意位置上,接收来自源端发送的测试信号,并放大转发至目的端。 [0027] Step A, the mobile relay at an arbitrary position on the fixed rail, receiving the test signal transmitted from the source terminal, and amplifying forwarded to the destination.

[0028] 该测试信号是用于测试通信性能的信号,它可以帮助移动中继搜寻到最佳中继位置,可以在该测试信号中携带用来测试通信性能的数据,且在移动中继搜寻到最佳中继位置之前,源端发送的都是测试信号,只有在移动中继找到最佳中继位置之后,源端才将发送真正有用的数据。 [0028] The test signal is a signal for testing communication performance, which can help to find the best relay mobile relay positions, may carry data used to test the communication performance of the test signal, and the mobile relay Search the optimal position before the relay, the transmission source is a test signal, only after the relay mobile relay find the best position, the source transmits only really useful data.

[0029] 在第η时隙,源端发送测试信号给移动中继,移动中继在固定轨道的任意位置上接收源端发送的测试信号,并将该测试信号放大以及转发给目的端,使得该目的端将该测试信号的通信性能强度与保存的最佳已知位置的通信性能强度进行对比。 [0029] In the first time slot η, a test signal source to send a mobile relay, the relay mobile terminal receives the test signal transmitted by the source at an arbitrary position on the fixed rail, and the test signal is amplified and forwarded to the destination, such that the destination communication performance of the intensity of the test signal is compared with the known position of the best communication performance strength saved.

[0030] 步骤Β、该目的端接收该移动中继发来的信号并计算本次通信性能,该通信性能包括信噪比、误码率,并根据计算结果与已保存的最佳已知中继位置的通信性能进行比较,生成一比特信息反馈至该移动中继,该一比特信息表示当前通信性能与已保存的最佳已知中继位置的通信性能的比较结果。 [0030] Step Beta, the destination of the received signal to the secondary moving and calculating the current communication performance, the communication performance noise ratio, bit error rate, and best known and the results saved in accordance following the performance of the communication position compared to generate a feedback bits to the mobile relay, a bit of the comparison result information indicates that the current communication performance of the communication performance saved best known relay positions.

[0031] 该最佳已知中继位置为已测试的通信性能最好的位置。 [0031] The best known position of the relay communication performance tested the best position.

[0032] 在进行最佳中继位置搜寻前,移动中继先要初始化其位置信息,并接收来自源端发射的测试信号并放大转发至目的端,该目的端将计算该次通信性能,并将的计算结果保存为自己的初始记录。 [0032] The optimal intermediate position before performing the search, the mobile relay must first initialize its location information, and receive the test signal emitted from the source and amplifying forwarded to the destination, the destination will count the communication performance, and the calculation results are stored for their initial recording. 每个时隙,该源端都会发送测试信号给该移动中继,该移动中继将该测试信号放大后发送给该目的端,该目的端接收该移动中继发来的信号并计算该次通信性能,该通信性能包括信噪比(SNR,Signal Noise Ratio)、误码率(SER,Symbol Error Rate),其中信噪比越大,则表示通信性能越强,而误码率越小,表示通信性能越强,该信号为该测试信号放大后得到的。 Each time slot, the source will be sent to the mobile relay the test signal, is sent to the destination after the mobile relay the test signal amplification, the object in the mobile terminal for receiving signal and calculating the secondary to secondary communication performance, the communication performance-noise ratio (SNR, Signal Noise ratio), a bit error rate (SER, Symbol Error rate), wherein the larger the SNR, the stronger the communication performance, the smaller the error rate, It indicates a higher communication performance, the test signal is in the signal obtained after amplification.

[0033] 在第η时隙之前的所有测试信号中通信性能强度最大的位置即为该最佳已知位置,该最佳已知位置的信息保存在该目的端中,也保存在该移动中继中。 [0033] In all tests the position of maximum signal strength prior to the performance of the communication slot η is the location of the best known, the best known location information stored in the destination, it is also stored in the movement following in.

[0034] 该目的端根据该信号计算出本次和移动中继的通信性能后,根据计算结果与已保存的最佳已知中继位置的通信性能进行比较,即,比较出本次与该移动中继所在当前位置的通信性能与保存的最佳已知位置的通信性能的大小,以此判断移动中继在当前位置的通信性能是否较之上次所在位置有了提升。 [0034] The destination of the signal is calculated according to the communication performance of this and the mobile relay, the optimal communication performance compared with the known position of the relay according to the results saved, i.e., a comparison of this with the where the size of the communication performance of the current position of the mobile relay communication performance of the best known location stored in order to determine whether or not the mobile relay has improved compared to the last position where the communication performance of the current position. 目的端根据当前通信性能与已保存的最佳已知中继位置的通信性能的比较结果,更新内存中的最佳已知接收信号通信性能。 The destination communication performance with the comparison result of the current communication performance saved best known relay positions, updating the best known receiver signal communication performance memory.

[0035] 进一步地,根据比较结果生成一比特信息,将该一比特信息反馈至该移动中继,该一比特信息表示当前通信性能与已保存的最佳已知中继位置的通信性能的比较结果,即该一比特信息中包含该目的端接收信号性能是否提高的信息。 [0035] Further, to generate one bit of information in accordance with the comparison result, the one bit of information fed back to the mobile relay, the one-bit information indicating the current communication performance comparison communication performance saved best known relay positions the results, i.e. the one-bit information included in the destination information is received signal improved performance. 例如,可以预先设置比特信息1 表示当前通信性能比最佳已知位置的通信性能有提高,比特信息〇表示信号的当前通信性能比最佳已知位置的通信性能有下降。 For example, 1-bit information may be set in advance indicates that the current communication performance improve communication performance over the best known position of the square indicates the current bit information communication performance of a communication signal are lower than the best performance of the known location. 在实际应用中,还可以通过其他的形式设置比较结果,此处不作限定。 In practice, the comparison result may be provided in other forms, not limited herein.

[0036] 具体地,该一比特信息可以是该目的端接收到的该测试信号的信噪比与该目的端上已保存的最佳已知位置的信噪比的对比结果,该最佳已知位置为在第η时隙之前已计算得到的所有测试信号的最大信噪比对应的位置。 [0036] In particular, the information may be a bit on the destination of the signal to noise ratio test signal is received at the object saved SNR comparison results of the best known position, which has the best position of the maximum signal to noise ratio corresponding to the known positions of all of the test signal as calculated before the first time slot η obtained. 该一比特信息也可以是为该目的端接收到的该测试信号的误码率与该目的端上已保存的最佳已知位置的误码率的对比结果,该最佳已知位置为在第η时隙之前已计算得到的所有测试信号的最小误码率对应的位置。 This information may be a bit error rate of the comparison results of the best known position on the saved error rate of the test signal is received at that object to the destination, the optimum position is known as All tests have been calculated before the first signal is obtained η slot position corresponding to the minimum error rate.

[0037] 其中,该源端和该目的端可以是各种类型的无线通信收发设备,如:手机、基站等。 [0037] wherein, the source and the destination may be various types of wireless communication transceiver, such as: mobile phones, base stations. 该移动中继使用机载单天线。 The airborne mobile relay using a single antenna.

[0038] 为了便于理解,简单介绍下移动中继中继通信的场景,请参阅图2,图2为本发明实施例中移动中继中继通信模型示意图。 [0038] For ease of understanding, a brief introduction of the mobile relay communication relay scenario, see Figure 2, Figure 2 a schematic diagram of the mobile relay communication relay model embodiment of the present invention.

[0039] 移动中继分别与源端、目的端通过无线网络连接。 [0039] Mobile relay respectively connected to the source terminal of the destination over the wireless network. 移动中继在柱坐标系上为点R1, R^XOY平面上的投影为点心',源端在柱坐标系的xoy平面上为点S,目的端在柱坐标系的XOY平面上为点D。 Mobile relay based on a cylindrical coordinate point R1, the projection on the R ^ XOY plane refreshments', the source end in the cylinder coordinate plane xoy as point S, the destination column in the XOY plane coordinates of point D .

[0040] 具体地,柱坐标系的原点0的坐标变量是(0,0,z),源端S的坐标变量是(xs,ys,zs), 目的端D的坐标变量是(Xd,yd,zd),移动中继Ri的三个坐标变量是(r,0,z),其中r为移动中继在XOY平面上的运动半径,Θ为从正z轴来看自X轴按逆时针方向转到ORi'所转过的角,z为移动中继的高度。 [0040] Specifically, the origin O of the coordinate variables cylindrical coordinates are (0,0, z), the coordinates of the source terminal S is variable (xs, ys, zs), the coordinates of the destination variable is D (Xd, yd , zd), a mobile relay Ri is three coordinate variables (r, 0, z), where r is the radius of movement of the mobile relay in the XOY plane, Θ is a view from the positive z-axis counterclockwise from the X axis direction to ORi 'are rotated through an angle, z is the height of the mobile relay. 以上柱坐标系的原点、r、z均是预先设定的,从而也就确定了移动中继的运动轨迹,即移动中继在图2中高度为z半径为r的圆周上移动。 The origin of the above cylindrical coordinates, r, z are set in advance and, thus, to determine the trajectory of the mobile relay, i.e., the mobile relay highly mobile on the circumference radius r z is 2 in FIG. 移动中继在第η时隙的坐标为R(r,0 (η),ζ),在第η+1 时隙的坐标为R(r,0 (η+1),ζ)。 Coordinates of the mobile relay slot is [eta] R (r, 0 (η), ζ), the coordinates of the first slot η + 1 is R (r, 0 (η + 1), ζ).

[0041] 柱坐标系(Γ,θ,ζ)与空间直角坐标系(x,y,z)的转换关系如下: [0041] The cylindrical coordinate system (Γ, θ, ζ) spatial rectangular coordinate system (x, y, z) conversion relationship is as follows:

Figure CN105491637BD00071

[0043] 进一步地,在第η时隙,移动中继与源端S之间的通信距离(即直线距离)cU、与目的端D之间的通信距离山分别为: [0043] Further, in the communication distance (i.e., straight line distance) between the first η slots, the source relay and the communication distance S between the mountain cU, and destination D are:

Figure CN105491637BD00072

[0045] 下面以通信性能为信噪比时为例,描述移动中继、源端和目的端的通信过程以及信噪比,请仍参见图2: [0045] In the following an example communications SNR performance, description of the mobile relay, the source and destination of the communication process and the signal to noise ratio, see still Figure 2:

[0046] 第一跳通信:源端到移动中继; [0046] a first multihop communication: the source to the mobile relay;

[0047] 源端发送给移动中继的信号: [0047] The source sends a signal to the mobile relay:

Figure CN105491637BD00073

[0050] 其中,X表示源端发射的测试信号,Ps表示源端的发射功率,Ls,R表示源端到移动中继的自由空间路径损耗,m表示第一跳通信的加性高斯白噪声。 [0050] wherein, X represents a transmitted test signal source, Ps denotes transmit power of the source, Ls, R represents the free space path loss of the source to the mobile relay, m represents a first additive white gaussian noise hop communication. E表示求数学期望,No1表示加性高斯白噪声m的功率。 E represents the mathematical expectation seeking, No1 represents additive white gaussian noise power of m.

[0051] 第一跳通信的自由空间路径损耗: Free-space path [0051] a first-hop communication loss:

Figure CN105491637BD00074

[0053] 其中,λ表示源端发射测试信号的波长,cb表示源端与移动中继之间的距离。 [0053] where, λ represents the wavelength of emission of the test signal source, cb denotes a distance between the source and the mobile relay.

[0054] 信号在传输过程中有衰落,还会受到噪声的干扰,移动中继转发的信息中会包括经过了自由路径衰落的测试信号和高斯白噪声。 [0054] There signal fading during transmission, the interference caused by noise, the information will be forwarded mobile relay comprising a free path through the test signal fading and white Gaussian noise.

[0055] 第二跳通信:移动中继到目的端; [0055] The second hop communication: the mobile relay to the destination;

[0056]移动中继发送给目的端的信号: [0056] transmitted to the destination mobile relay signal:

Figure CN105491637BD00081

[0059] 其中,X表示测试信号,Ps表示源端的发射功率,Ls,R表示源端到移动中继的自由路径损耗,Lr,D表示源端到移动中继的自由路径损耗,G表示移动中继给接收到的测试信号的增益,即中继增益,112表示第二跳通信的加性高斯白噪声。 [0059] wherein, X represents a test signal, Ps denotes transmit power of the source, Ls, R represents a free path of the source to the mobile relay loss, Lr, D represents the free path of the source to the mobile relay loss, G represents a movement to relay the received test signal gain, i.e. the gain of the relay, 112 represents a second additive white gaussian noise hop communication. E表示求数学期望,No2表示加性高斯白噪声112的功率。 E represents the mathematical expectation seeking, No2 represents additive white Gaussian noise power 112.

[0060] 第二跳信道的自由空间路径损耗: [0060] The second hop channel free space path loss:

Figure CN105491637BD00082

[0062] 其中,λ表示移动中继发射的经过放大的测试信号的波长,d2表示目的端与移动中继之间的距离。 [0062] where, λ represents a wavelength of emitted through the mobile relay amplified test signal, d2 denotes a distance between the mobile relay destination.

[0063] 移动中继给接收到的测试信号的增益为: [0063] the mobile relay to the received test signal gain:

Figure CN105491637BD00083

[0065]由公式⑷得源端发送的该测试信号在目的端接收后的信噪比SNR为: [0065] The test signal is obtained by the formula ⑷ source sends the SNR at the receiving end for the purpose of:

Figure CN105491637BD00084

[0067]其中,SNRi、SNR2如下: [0067] wherein, SNRi, SNR2 follows:

Figure CN105491637BD00085

[0070] 公式(7)、⑻、⑼中的参数含义参见前述的描述,此处不再赘述。 [0070] Equation (7), ⑻, see Definition ⑼ in the foregoing description is not repeated here.

[0071] 步骤C、该移动中继记录当前位置信息,并根据该一比特信息及预置的固定步长移动到下一个中继位置,并返回步骤A,直至最终确定最佳中继位置。 [0071] Procedure C, the current location information of the mobile relay recording, and moves to the next long the relay based on the position of a bit of information and a preset fixed step, and returns to step A, to a final position to determine the best repeater.

[0072] 具体地,若该一比特信息表示当前通信性能大于该最佳已知中继位置的通信性能,则将当前位置记录为最佳已知位置,并随机移动一个固定步长以确定及移动到下一个中继位置,随机增加是指随机选取正负符号进行增加。 [0072] Specifically, if the one-bit information indicating the performance of the current communication is larger than the optimum performance of the communication relay known position, the current position is recorded as the optimal position is known, and a random movement to determine a fixed step and move to the next relay location, random randomly increasing means for increasing the sign.

[0073] 若该一比特信息表示当前通信性能小于该最佳已知中继位置的通信性能,则该移动中继先返回到上一次的位置,再随机增加一个固定步长以确定及移动到下一个中继位置,并返回步骤A,直至最终确定最佳中继位置。 [0073] If the one-bit information indicating the current communication performance is less than optimal performance of the communication relay known locations, the mobile relay to return to its previous position, to increase a randomly determined fixed step size and move to the next relay location, and returns to step a, to a final position to determine the best repeater.

[0074] 每个迭代时隙随机增加一个具有固定值的扰动步长: [0074] Each iteration increases a slotted random perturbation step having a fixed length value:

[0075] δ(η)=±δ〇 [0075] δ (η) = ± δ〇

[0076] 其中,δ〇为固定步长,η表示时隙数,每增加一个时隙,δ⑹便增加一个δ〇。 [0076] wherein δ〇 fixed step size, [eta] represents the number of time slots, each additional time slot, δ⑹ a δ〇 is incremented. 当δ (η)= δ〇时,表示移动中继逆时针方向移动一个δ〇,当δ (η) =-δ〇时,表示移动中继顺时针方向移动一个δ〇〇 When δ (η) = δ〇, showing a mobile relay δ〇 counterclockwise direction, when δ (η) = -δ〇, showing a mobile relay clockwise movement δ〇〇

[0077] 需要说明的是,移动中继的移动方向也可以做相反设置,S卩,当δ (η) =δ〇时,表示移动中继顺时针方向移动一个δ〇,当δ (η) =-δ〇时,表示移动中继逆时针方向移动一个δ〇。 [0077] Incidentally, the moving direction of the mobile relay may be provided to do the opposite, S Jie, when δ (η) = δ〇, showing a mobile relay δ〇 moved clockwise, when δ (η) = -δ〇, it indicates that a mobile relay δ〇 counterclockwise direction.

[0078] 移动中继记录其当前位置,以当前位置为最佳已知中继位置,该最佳已知中继位置用θ (η)表示,η表示时隙数。 [0078] Mobile relay records its current location, the current location of the best known position of the relay, the relay of the best known position indicated by θ (η), η represents the number of slots. 移动中继根据固定步长计算下一位置并移动到下一位置,以㈣")表示下一位置,以δ (η)表示随机增加步长,则:舛《) = Θ⑻_+_&>)。 Mobile relay calculated fixed step and moves to the next position to the next position to (iv) ") indicates the next position by δ (η) denotes a random increased by the step, then: contradictory") = Θ⑻ _ + _ & amp;>) .

[0079] 进一步地,该移动中继根据该一比特信息中的该目的端接收信号性能是否提高的信息,以及预置的固定步长确定下一个中继位置。 [0079] Further, the mobile relay receives the information whether a signal based on the object of improving the performance of the end of the one-bit information, and a preset fixed step determines the next relay location. 移动中继对该一比特信息进行判断,判断为目的端接收移动中继的信号性能提高时,即当前通信性能比已保存的最佳已知中继位置的通信性能更高时,将当前位置记录为最佳已知位置θ (η+1) =θ (η) +δ⑹,判断为目的端接收移动中继的信号性能未提高时,即当前通信性能比已保存的最佳已知中继位置的通信性能更差时,则移动中继返回上一时隙的位置θ (η+1) =θ (η),返回步骤Α。 A mobile relay when the judgment bit information, judges the received signal to improve performance of the mobile relay destination, i.e. the current communication performance is higher than the optimum performance of the communication relay known in the saved position, the current position recording the best known position θ (η + 1) = θ (η) + δ⑹, it is determined that the mobile object receives the relay signal performance is not improved, i.e., the current communication performance than the best known relay saved when the communication performance worse position, the mobile relay position [theta] on a return slot (η + 1) = θ (η), returns to step Α.

[0080] 该最佳中继位置包括:在预设的搜寻时长内通信性能最好的位置,或者,该移动中继移动完整个该固定轨道时通信性能最好的位置,或者,该通信性能满足系统设定要求的位置。 [0080] The best relay location comprises: the best position when a predetermined position of the best communication performance within the search length, or, the full movement of a mobile relay communication performance of the fixed rail, or, the communication performance setting a position to meet the system requirements. 即,通过设置移动中继的搜寻时长、搜寻路程、通信性能强度中的任一个参数来确定该最佳中继位置。 That is, by providing the mobile relay long time search, search distance, the communication performance of any one intensity parameter to determine the optimum position of the relay.

[0081] 若该下一个中继位置不是该最佳中继位置,则须再次执行步骤Α:移动中继在固定轨道的任意位置上,接收来自源端发送的测试信号,并放大转发至目的端,这样在步骤A至步骤C之间循环执行,直至搜寻到最佳中继位置。 [0081] If the next hop is not the preferred position of the relay location, steps shall be performed again Α: mobile relay in an arbitrary position on the fixed rail, receiving the test signal transmitted from the source terminal, and amplifying forwarded to the destination end, the cycle executed between step A to step C, and up to find the best position of the relay. 即搜索信号的通信性能强度最大的中继位置,当确定最佳中继位置之后,便停止上述循环搜索过程。 Signal strength search i.e., the communication performance of the maximum position of the relay, when the relay to determine the best location, the circulation stops the search process.

[0082] 具体地,当通信性能为信噪比时,若该对比结果为本次通信的信噪比大于该最佳已知位置的信噪比,则表示当前位置的通信状况更好,更适宜作中继位置,因此,该移动中继将当前位置记录为最佳已知位置,并随机移动一个该固定步长的距离以确定及移动到下一个中继位置。 [0082] Specifically, when the signal to noise ratio performance of the communication, if the comparison result is that the SNR is greater than twice the signal to noise ratio of the communication best known position, the current position of the communication status indicates better and more suitable for the relay location, and therefore, the current position of the mobile relay is the best known location record, and a random movement of the fixing step to determine the distance and move to the next relay location.

[0083] 并且,该移动中继更新最佳接收信号的信噪比,更新规则为: [0083] Further, the mobile relay update best received signal to noise ratio, for the update rule:

Figure CN105491637BD00091

[0085] 其中,SNRbest为第η+1时隙最佳接收信号的信噪比,max (SNRbest (n),SNR (η))表示第η时隙最佳已知位置的信噪比和当前位置的信噪比的最大值,该最大值即为SNRbest。 [0085] wherein, SNRbest is the second best received signal to noise ratio η + 1 slot, max (SNRbest (n), SNR (η)) represents the best known position of the signal to noise ratio of [eta] and the current time slot position of the maximum signal to noise ratio, which is the maximum SNRbest.

[0086] 同时,该移动中继将当前位置更新为最佳已知位置,更新规则如下: [0086] Meanwhile, the mobile relay will update the current position best known location update rules are as follows:

Figure CN105491637BD00092

[0088]该对比结果为本次通信的信噪比小于该最佳已知位置的信噪比,则表示当前位置的通信状况不理想,没有该最佳已知位置更适宜作中继位置,因此,该移动中继将返回到其上一次所在的位置,并随机移动一个该固定步长的距离以确定及移动到下一个中继位置。 [0088] The comparative results based sub SNR less than the SNR of the communication is the best known position, the communication status indicates the current position is not ideal, which is not suitable as the best known position further relay location, Thus, the mobile relay will return to a position which is located on, and a random movement of the fixing step to determine the distance and move to the next relay location.

[0089] 当通信性能为误码率时,若该对比结果为该测试信号的误码率小于该最佳已知位置的误码率,则表示当前位置的通信状况更好,更适宜作中继位置,因此,该移动中继将当前位置记录为最佳已知位置,并随机移动一个该固定步长的距离以确定及移动到下一个中继位置。 [0089] When the communication performance of the BER, bit error rate test signal is less than the error rate of the best known position, the current position of the communication status indicates better, more suitable if the comparison results in that as following the position, the current position of the mobile relay is the best known location record, and a random movement of the fixing step to determine the distance and move to the next relay location.

[0090] 若该对比结果为该测试信号的误码率大于该最佳已知位置的误码率,则表示当前位置的通信状况不理想,没有该最佳已知位置更适宜作中继位置,因此,该移动中继将返回到上一次的位置,并随机移动一个该固定步长的距离以确定及移动到下一个中继位置。 [0090] The bit error rate test signal is greater than the error rate of the best known position, the communication status indicates the current position is not ideal, there is no more the best position suitable for known if the comparison result is that the position of the relay Therefore, the mobile relay will return to its previous position, and a random movement of the fixing step to determine the distance and move to the next relay location.

[0091] 进一步地,若该对比结果为计算得到的该测试信号的信噪比大于该最佳已知位置的信噪比,或者,若该对比结果为计算得到的该测试信号的误码率小于该最佳已知位置的信噪比,则将该移动中继的当前位置更新为该最佳已知位置,并对应更新该测试信号的信噪比或误码率。 [0091] Further, if the comparison result of the test signal is greater than the calculated signal to noise ratio SNR of the best known location, or, if the comparison result of the test signal calculated bit error rate the less than optimum signal to noise ratio of the known position, the current position of the mobile relay for updating the best known position, and updates the corresponding noise ratio or error rate of the test signal.

[0092] 本发明实施例中,通过利用固定的扰动步长及通信性能强度来搜寻移动中继的最佳中继位置,可提高中继通信的性能,而不需要依赖源端和目的端的位置信息,无需多天线,且只需目的端反馈一比特信息给移动中继控制其搜寻最佳中继位置,应用范围更广,适用性更强且受限小,提高确定最佳中继位置的效率和准确性。 Position of embodiment [0092] of the present invention, to search for the best position of the relay mobile relay by using a fixed step disturbance communication performance and strength, can improve the performance of the relay communication, without relying on the source end and the destination end information without multiple antennas and only one bit of feedback destination information to the mobile relay control its search for the best position of the relay, a wider range of applications, and more limited applicability small, increase the relay to determine the best location efficiency and accuracy.

[0093] 在本发明以上基于固定步长的移动中继最佳中继位置搜寻方法的实施例中,通过信噪比搜寻移动中继的最佳中继位置仿真图如图3a、3b所示,通过误码率搜寻移动中继的最佳中继位置仿真图如图4a、4b所示: [0093] Example based fixed step method of searching for the optimum position of the relay mobile relay by the present invention, the above SNR search best relay mobile relay simulation position shown in Figure 3a, 3b shown in FIG. , searching for the optimum position of the relay mobile relay by simulation of the BER shown in Figure 4a, 4b as shown:

[0094] 其中,初始步长: [0094] wherein the initial step:

Figure CN105491637BD00101

[0095] 源端的位置坐标:(xs,ys,zs) = (0,-700,1) [0095] The positional coordinates of the source end: (xs, ys, zs) = (0, -700,1)

[0096] 目的端的位置坐标:(xd,yd,zd) = (30,-600,1) Coordinate position [0096] of the destination: (xd, yd, zd) = (30, -600,1)

[0097] 移动中继的位置坐标:(r,θ⑹,z) = (500,Θ⑹,30) [0097] The movement position coordinates of the relay: (r, θ⑹, z) = (500, Θ⑹, 30)

[0098] 图3a和图3b以信噪比为基准表示通信性能强度,即公式(8),图3a横轴表示θ (η), 纵轴表示与θ (η)相对应的该中继位置的源端到目的端的信噪比SNR。 [0098] Figures 3a and 3b as a reference signal to noise ratio showing communication performance intensity, i.e., the formula (8), FIG. 3a the horizontal axis indicates θ (η), and the vertical axis represents θ (η) corresponding to the position of the relay the SNR of the source to the destination. 图3b横轴表示移动中继搜寻最佳中继位置过程中花费的时隙数,纵轴表示源端到目的端的信噪比。 FIG 3b the horizontal axis represents the number of slots takes best relay mobile relay position search process, the vertical axis represents SNR source to destination. 在搜寻到第35个时隙时,确定最佳中继位置,即图3a中的极大值点对应的位置。 When searching for the 35th time slot, the relay to determine the best position, i.e. the position of maximum points corresponding to figure 3a.

[0099] 图4a和图4b以误码率为基准表示通信性能强度,图4a横轴表示Θ⑹,纵轴表示与Θ (η)相对应的该中继位置的源端到目的端的误码率BER。 [0099] Figures 4a and 4b represents a bit error rate of the communication performance of the reference intensity, the horizontal axis represents FIG. 4a Θ⑹, the vertical axis represents the position of the relay source Θ (η) corresponding to the purpose of end to end error rate BER. 图4b横轴表示移动中继搜寻最佳中继位置过程中花费的时隙数,纵轴表示源端到目的端的误码率。 Figure 4b the horizontal axis represents the number of slots takes best relay mobile relay position search process, the vertical axis represents the bit error rate of the source to the destination. 在搜寻到第35个时隙时,确定最佳中继位置,即图4a中的极小值点对应的位置。 When searching for the 35th time slot, the relay to determine the best location, the position, i.e., the minimum point in FIG. 4a corresponds.

[0100] 请参阅图5,图5是本发明第二实施例提供的基于固定步长的移动中继最佳中继位置搜寻系统的结构示意图,为了便于说明,仅示出了与本发明实施例相关的部分。 [0100] Referring to FIG. 5, FIG. 5 is a schematic structural diagram of a mobile based fixed step search system relay best relay location to a second embodiment of the present invention provides, for convenience of description, only the embodiment of the present invention Examples relevant parts. 该系统主要包括:移动中继501、源端502以及目的端503。 The system comprises: a mobile relay 501, source 502 and destination 503.

[0101] 其中,移动中继501在固定轨道的任意位置上,接收来自源端502发送的测试信号, 并放大转发至目的端503。 [0101] wherein, the mobile relay 501 at an arbitrary position on the fixed rail, receiving the transmitted test signal source 502, amplified and forwarded to the destination 503.

[0102] 目的端503接收移动中继501发来的信号并计算本次通信性能,该通信性能包括信噪比、误码率,并根据计算结果与已保存的最佳已知中继位置的通信性能进行比较,并生成一比特信息反馈至移动中继501,该一比特信息表示当前通信性能与已保存的最佳已知中继位置的通信性能的比较结果,该最佳已知中继位置为已测试的通信性能最好的位置。 [0102] the mobile object 503 receives the signal sent by the relay 501 and calculates the current communication performance, the communication performance noise ratio, bit error rate, and the calculation results and saved best known relay positions comparing communication performance, and generates a feedback bits to the mobile relay 501, a bit of the comparison result information indicates that the current communication performance and communication performance saved best known position of the relay, which is best known relay the best location for the position of the communication performance tested.

[0103] 移动中继501记录当前位置信息并根据该一比特信息及预置的固定步长移动到下一个中继位置,并返回执行步骤移动中继在固定轨道的任意位置上,接收来自该源端发送的测试信号,并放大转发至所述目的端,不断循环,直至最终确定最佳中继位置。 [0103] Mobile relay 501 and moves the recording information of the current position based on the bit information, and a preset fixed step length to the next relay location, and returns to step mobile relay in an arbitrary position on the fixed rail, the receiving It sends a test signal source, and amplifying forwarded to the destination, continuous cycle, to a final position to determine the best repeater. 该最佳中继位置为:在预设的搜寻时长内通信性能最好的位置,或者,移动中继501移动完整个该固定轨道时通信性能最好的位置,或者,该通信性能满足系统设定要求的位置。 The best relay position: in the best position within the communication performance of the long search for a preset time, or a mobile relay 501 is moved in the full time-position of the fixed rail best communication performance, or the communication system design to meet performance requirements of a given location.

[0104] 进一步地,移动中继501在进行最佳中继位置搜寻前,初始化其位置信息,并接收来自源端502发射的该测试信号并放大转发至目的端503。 [0104] Further, the mobile relay 501 relay location before performing the best search position initialization information, and receives the test signal emitted from the source 502 and an enlarged forward end 503 to the destination.

[0105] 进一步地,若该一比特信息表示当前通信性能大于该最佳已知中继位置的通信性能,则将移动中继501当前位置记录为最佳已知位置,并随机移动一个该固定步长以确定及移动到该下一个中继位置。 [0105] Further, if the one-bit information indicating the current communication is larger than the optimum performance of the known position of the relay communication performance, a mobile relay 501 will record the current location of the best known position, and a random movement of the fixing and a step to determine whether the move to the next relay location. 若该一比特信息表示当前通信性能小于该最佳已知中继位置的通信性能,则移动中继移动中继501先返回到上一次的位置,再随机移动一个固定步长以确定及移动到下一个中继位置。 If the one-bit information indicating the current communication performance is less than optimal performance of the communication relay known location, the mobile relay mobile relay 501 to return to its previous position, and then move randomly determine a fixed step size and move to next relay location.

[0106] 本实施例中的基于固定步长的移动中继最佳中继位置搜寻系统的移动中继、源端、目的端实现各自功能的具体过程,请参见上述图1所示实施例中描述的具体内容,此处不再赘述。 [0106] In this embodiment of the fixed step movement of the mobile relay system best relay based on the relay location search, source, destination specific process to achieve the respective functions, see the above-described embodiment shown in FIG. 1 description of the specific content, not repeat them here.

[0107] 本发明实施例中,通过利用固定的扰动步长及通信性能强度来搜寻移动中继的最佳中继位置,可提高中继通信的性能,而不需要依赖源端和目的端的位置信息,无需多天线,且只需目的端反馈一比特信息给移动中继控制其搜寻最佳中继位置,应用范围更广,适用性更强且受限小,提高确定最佳中继位置的效率和准确性。 Position of embodiment [0107] of the present invention, to search for the best position of the relay mobile relay by using a fixed step disturbance communication performance and strength, can improve the performance of the relay communication, without relying on the source end and the destination end information without multiple antennas and only one bit of feedback destination information to the mobile relay control its search for the best position of the relay, a wider range of applications, and more limited applicability small, increase the relay to determine the best location efficiency and accuracy.

[0108] 本领域技术人员可以理解实现上述实施例方法中的全部或部分步骤是可以通过程序来指令相关的硬件完成,所述的程序可以存储于一种计算机可读存储介质中,上述提到的存储介质可以是只读存储器,磁盘或光盘等。 [0108] Those skilled in the art can understand that the above embodiments of the method steps may be all or part by a program instructing relevant hardware, the program may be stored in a computer-readable storage medium mentioned above the storage medium may be a read-only memory, magnetic or optical disk.

[0109] 在上述实施例中,对各个实施例的描述都各有侧重,某个实施例中没有详述的部分,可以参见其它实施例的相关描述。 [0109] In the above embodiment, the description of the various embodiments have different emphases, certain embodiments not detailed in part, reference may be related to other embodiments of the described embodiments.

[0110] 以上对本发明所提供的基于固定步长的移动中继最佳中继位置搜寻方法及系统进行了详细介绍,对于本领域的技术人员,依据本发明实施例的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本发明的限制。 [0110] Although the present invention is provided are described in detail based on the best relay fixed step method and system for search of a mobile relay, to those skilled in the art, according to idea of ​​an embodiment of the present invention, in a specific embodiment and the application scope of the change, Therefore, the specification shall not be construed as limiting the present invention.

Claims (10)

  1. 1. 一种基于固定步长的移动中继最佳中继位置搜寻方法,其特征在于,所述搜寻方法步骤包括: 步骤A,移动中继在固定轨道的任意位置上,接收来自源端发送的测试信号,并放大转发至目的端; 步骤B,所述目的端接收所述移动中继发来的信号并计算本次通信性能,所述通信性能包括信噪比、误码率,并根据计算结果与已保存的最佳已知中继位置的通信性能进行比较, 并生成一比特信息反馈至所述移动中继,所述一比特信息表示当前通信性能与已保存的最佳已知中继位置的通信性能的比较结果,所述最佳已知中继位置为已测试的通信性能最好的位置; 步骤C,若所述一比特信息表示当前通信性能大于所述最佳已知中继位置的通信性能, 则所述移动中继将当前位置记录为最佳已知位置并根据所述一比特信息及预置的固定步长移动到下一个中继位置 A fixed step movement of the best relay location a relay-based search method, characterized in that said step of searching method comprising: a step A, the mobile relay at an arbitrary position on the fixed rail, receiving from a transmission source test signal, and amplify and forward to the destination end; procedure B, the destination terminal for receiving signal to said moving secondary and calculated the amount of communication performance, the communication performance noise ratio, bit error rate, and in accordance with the results were compared with the best known relay communication performance of the saved position, and generates a feedback bits to the mobile relay, the best known one-bit information indicating the current communication performance saved in following the result of comparison of the performance of the communication position, the position of the best known relay communication performance tested as the best location; step C, if the one-bit information indicating the current communication is larger than the optimum performance of the known following the performance of the communication position, the current position of the mobile relay optimum recording according to the known position and movement information of a fixed step and a preset bit to the next relay location 并返回步骤A,直至最终确定最佳中继位置,所述最佳中继位置为:在预设的搜寻时长内通信性能最好的位置,或者,所述移动中继移动完整个所述固定轨道时通信性能最好的位置,或者,所述通信性能满足系统设定要求的位置。 And returns to step A, to determine the best repeater to a final position, the optimum position of the relay: in the best position within the communication performance of a long search for a preset time, or the mobile relay complete movement of said fixing when orbital position of best communication performance, or the performance of the communication system to meet the requirements set position.
  2. 2. 如权利要求1所述的搜寻方法,其特征在于,所述方法还包括: 以yR表示所述移动中继接收到的所述测试信号,则: 2. A search method according to claim 1, characterized in that, said method further comprising: yR indicates the test signal received by the mobile relay, then:
    Figure CN105491637BC00021
    ,其中X表示源端发射的测试信号,Ps表示源端发射功率,Ls,R表示所述源端到所述移动中继的第一跳通信的自由空间路径损耗,m表示所述第一跳通信的加性高斯白噪声; 在进行最佳中继位置搜寻前,所述移动中继初始化其位置信息,并接收来自所述源端发射的所述测试信号并放大转发至所述目的端; 所述目的端计算通信性能,并将计算结果保存为初始记录。 Wherein X represents a test signal emitted by the source, Ps denotes transmit power source, Ls, R represents a movement source to the free space path loss to the first hop relay communications, m represents the first hop additive white gaussian noise in communication; best before relay location search is performed, the mobile relay initializes its location information, and receive the test signal emitted from the source to the destination and an enlarged forward end; the destination communication performance calculation, and the calculation result is stored initially recorded.
  3. 3. 如权利要求1所述的搜寻方法,其特征在于,所述方法还包括: 以yD表示目的端接收到的信号,则: yD = yRGLR,D+n2,其中yR表不移动中继接收的彳目号,G表不中继增侃,Lr,d表不所述移动中继到所述目的端的第二跳通信的自由空间路径损耗,m表示所述第二跳通信的加性高斯白噪声。 3. The search method according to claim 1, characterized in that, said method further comprising: yD receives a signal indicating the object, then: yD = yRGLR, D + n2, where the table does not move relay receiving yR the left foot mesh number, G is not relayed by the table Kan, Lr, d table is not the free space path loss of the second hop mobile relay communication terminal to the destination, m represents a second additive Gaussian hop communication White Noise.
  4. 4. 如权利要求1所述的搜寻方法,其特征在于,所述步骤C中,若所述一比特信息表示当前通信性能大于所述最佳已知中继位置的通信性能,则移动中继将当前位置记录为最佳已知位置并根据所述一比特信息及预置的固定步长确定移动到下一个中继位置,包括: 若所述一比特信息表示当前通信性能大于所述最佳已知中继位置的通信性能,则移动中继将当前位置记录为最佳已知位置,并随机增加一个所述固定步长以确定及移动到所述下一个中继位置,所述随机增加是指随机选取正负符号进行增加; 若所述一比特信息表示当前通信性能小于所述最佳已知中继位置的通信性能,则所述移动中继先返回到上一次的位置,再随机增加一个所述固定步长以确定及移动到下一个中继位置。 4. A search method according to claim 1, wherein said step C, if the one-bit information indicating the current communication is larger than the performance of the best known properties of the communication relay location, the mobile relay the current position is recorded as the best known position and a bit length determined according to the preset information and the fixing step to the next relay location, comprising: if the one-bit information indicating the current communication is larger than said optimum performance relaying communication performance known position, the current position of the mobile relay is the best known location record, and adding a random step to determine the fixation and move to the next relay location, increase the random It means for randomly selecting the sign of increase; if the one-bit information indicating the current communication performance is less than optimal performance of the communication relay known position of the mobile relay then returns to the first position once, randomly adding a step to determine the fixation and move to the next relay location.
  5. 5. 如权利要求1所述的搜寻方法,其特征在于,所述步骤C中,移动中继记录当前位置信息并根据所述一比特信息及预置的固定步长移动到下一个中继位置,包括: 步骤Cl,所述移动中继记录其当前位置㈣:《),n表示时隙数; 步骤C2,所述移动中继根据所述固定步长计算下一位置并移动到所述下一位置,以辦》) 表示所述下一位置,以S (η) = ±δ〇表示随机增加步长,δ〇表示所述固定步长,则: 5. The search method according to claim 1, wherein the step C, the mobile relay and the recording information of the current position according to the wavelength shift to a further bit of information fixed and preset position next hop comprising the steps of: Cl, the mobile relay records its current location (iv): "), n represents the number of time slots; step C2, the lower the mobile relay according to the calculated fixed step size and move to the next position a position to do ") indicates that the next position to S (η) = ± δ〇 represents random step size increases, the fixed step represents δ〇, then:
    Figure CN105491637BC00031
    >,θ (η)表示最佳已知中继位置。 >, Θ (η) represents the best known position of the relay.
  6. 6. 如权利要求5所述的搜寻方法,其特征在于,所述步骤B还包括: 所述目的端根据当前通信性能与已保存的最佳已知中继位置的通信性能的比较结果, 更新内存中的最佳已知接收信号通信性能。 6. The search method according to claim 5, wherein said step B further comprising: the destination terminal according to the current comparison result of the communication with the communication performance properties saved best known relay positions, update best received signal in the communication performance of the memory is known.
  7. 7. 如权利要求6所述的搜寻方法,其特征在于,所述方法还包括: 所述移动中继对所述一比特信息进行判断; 当判断为接收信号性能提高时,将当前位置记录为最佳已知位置θ (η+1) =θ (η) +δ (η), 当判断为接收信号性能未提高时,则返回上一时隙的位置,θ (η+1) =θ (η),并返回步骤A。 7. The search method according to claim 6, wherein said method further comprises: the mobile relay to the one-bit determination information; when it is determined that the received signal to improve performance, the current position is recorded as best known position θ (η + 1) = θ (η) + δ (η), is determined when the received signal does not improve performance, the position of a time slot is returned, θ (η + 1) = θ (η ), and returns to step A.
  8. 8. —种基于固定步长的移动中继最佳中继位置搜寻系统,其特征在于,所述搜寻系统包括移动中继、源端和目的端; 其中,所述移动中继在固定轨道的任意位置上,接收来自所述源端发送的测试信号,并放大转发至所述目的端; 所述目的端接收所述移动中继发来的信号并计算本次通信性能,所述通信性能包括信噪比、误码率,并根据计算结果与已保存的最佳已知中继位置的通信性能进行比较,并生成一比特信息反馈至所述移动中继,所述一比特信息表示当前通信性能与已保存的最佳已知中继位置的通信性能的比较结果,所述最佳已知中继位置为已测试的通信性能最好的位置; 若所述一比特信息表示当前通信性能大于所述最佳已知中继位置的通信性能,则所述移动中继将当前位置记录为最佳已知位置并根据所述一比特信息及预置的固定步长移动到 8. - Species fixed step relay mobile relay optimum position based search system, wherein the search system comprises a mobile relay, the source and destination; wherein the mobile relay fixed rail anywhere on the received test signal from the transmission source terminal, and amplifying forwarded to the destination; the destination mobile terminal in the received signal and to calculate the secondary current communication performance, the communication performance comprising SNR, bit error rate, and compared the calculation result with the optimal performance of the communication relay known position saved, and generates a feedback bits to the mobile relay, the one-bit information indicating the current communication comparison of performance and communication performance saved best known position of the relay, the relay location the best known as the best communication performance tested location; if the one-bit information indicating the current communication is larger than the performance the optimum performance of the communication relay known position, the current position of the mobile relay optimum recording according to the known position and a further fixed bit length information and preset to move 一个中继位置,并返回执行步骤移动中继在固定轨道的任意位置上,接收来自所述源端发送的测试信号,并放大转发至所述目的端,直至最终确定最佳中继位置,所述最佳中继位置为:在预设的搜寻时长内通信性能最好的位置,或者,所述移动中继移动完整个所述固定轨道时通信性能最好的位置,或者,所述通信性能满足系统设定要求的位置。 An intermediate position, and returns to step mobile relay in an arbitrary position on the fixed rail, receiving the test signal sent by the source, and amplifying forwarded to the destination end, to determine the best repeater to a final position, the said relay location is optimal: in the best position within the communication performance of the long search for a preset time, or the position of the mobile communication best performance of the complete movement of the relay of said fixed rail, or the communication performance setting a position to meet the system requirements.
  9. 9. 根据权利要求8所述的搜寻系统,其特征在于, 所述移动中继在进行最佳中继位置搜寻前,初始化其位置信息,并接收来自所述源端发射的所述测试信号并放大转发至所述目的端。 9. The search system as claimed in claim 8, wherein said front relay mobile relay carrying the best search position, position initialization information, and receive the test signal emitted from the source and amplifying forwarded to the destination.
  10. 10. 根据权利要求8或9所述的搜寻系统,其特征在于, 若所述一比特信息表示当前通信性能大于所述最佳已知中继位置的通信性能,则所述移动中继将当前位置记录为最佳已知位置,并随机移动一个所述固定步长以确定及移动到所述下一个中继位置; 若所述一比特信息表示当前通信性能小于所述最佳已知中继位置的通信性能,则所述移动中继先返回到上一次的位置,再随机移动一个所述固定步长以确定及移动到下一个中继位置。 10. The search system of claim 8 or claim 9, wherein, if the one-bit information indicating the current communication is larger than the performance of the communication performance of the best known position of the relay, the relay will move the current the best known position of the recording position, and a random movement to the fixing step and the movement to determine the next relay location; if the one-bit information indicating the current communication is smaller than the optimum performance of the known relay communication performance position, then the mobile relay to return to its previous position, a randomly moving step to determine the fixation and move to the next relay location.
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