CN102315874B - Short-range wireless communication package diversity method - Google Patents

Short-range wireless communication package diversity method Download PDF

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CN102315874B
CN102315874B CN 201110317266 CN201110317266A CN102315874B CN 102315874 B CN102315874 B CN 102315874B CN 201110317266 CN201110317266 CN 201110317266 CN 201110317266 A CN201110317266 A CN 201110317266A CN 102315874 B CN102315874 B CN 102315874B
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short
range
wireless
communication
package
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CN 201110317266
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Chinese (zh)
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CN102315874A (en )
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周望玮
高杉
朱启文
章艳
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南京信息职业技术学院
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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

Abstract

一种短程无线通信包分集方法,步骤包括:1)每个接收节点对当前接收的包信息进行数据解析;2)对已取得的包信息中的数据进行分集处理,得到正确的数据,进而得到对应的包信息;所述分集处理步骤包括:a)对同一组中,如果数据解析得到的包信息只有一个,那么该包信息中的数据即为所需数据;b)对同一组中,如果数据解析得到的包信息多于一个,则先对任意两个包信息中的数据进行比较,如果数据相同,则保留该数据;如果数据不同,则比较这两个包信息中的信号强度RSSI,保留信号强度RSSI大的包信息所对应的数据;所述步骤a、b中,组是指多个无线节点同时接收同一个单元的同一个包信息。 A short-range radio communication packet diversity method, comprising the steps: 1) each receiving node packet information currently received data analysis; 2) of the packet information acquired in the diversity process, to obtain the correct data, and thus to give ; package information corresponding to said sub-set processing step comprises: a) for the same group, if the data packet parsing the information obtained is only one, then the packet data is the desired information data; b) of the same group, if Insights obtained information packet more than one, any two of the first data packet information is compared, if the same data, the data is retained; if data are different, then compare the two signal strengths RSSI information packet, reserved large RSSI signal strength information corresponding to the packet data; said steps a, b, the group refers to a plurality of wireless nodes to simultaneously receive a unit with the same package information. 本方法的分集优点是系统简单、低成本和低功耗,非常适合于短程无线遥测应用。 Diversity advantage of this method is that the system is simple, low cost and low power, short range wireless telemetry is very suitable for application.

Description

短程无线通信包分集方法 Short-range radio communication packet diversity method

技术领域 FIELD

[0001] 本发明属于通信信息处理领域中,短程无线遥测的分集信息处理方法。 [0001] The present invention belongs to the field of information processing in the communication, short-range wireless telemetry diversity information processing method.

背景技术 Background technique

[0002] 短程无线遥测技术是依靠无线技术,在一二百米的有效范围内实现数据测量和数据传输的解决方案。 [0002] The short-range wireless telemetry is to rely on wireless technology, solutions and measured data transmission data in the effective range of two hundred meters.

[0003] 所谓分集接收,是指接收端对它收到的多个衰落特性互相独立(携带同一信息)的信号进行特定的处理,以降低信号电平起伏的办法。 [0003] The so-called diversity reception, fading characteristics of a plurality of receiving means receives the end of its mutually independent (carrying the same information) for specific processing signals, a way to reduce the signal level fluctuates.

[0004] 分集有两重含义: [0004] The diversity has two meanings:

[0005] 1、分散传输:使接收端能获得多个统计独立、携带同一信息的衰落信号。 [0005] 1, transmission dispersion: the reception side to obtain a plurality of statistically independent fading signals carrying the same information.

[0006] 2、集中处理:即接收机把收到的多个统计独立的衰落信号进行合并(包括选择与组合)以降低衰落的影响。 [0006] 2, focus: i.e. a plurality of receivers statistically independent fading signals received are combined (including selection and combination) to reduce the effects of fading.

发明内容 SUMMARY

[0007] 本发明提出一种短程无线遥测的分集方法。 [0007] The present invention provides a diversity method in a short-range wireless telemetry. 其特征是本方法基于多个无线接收节点同时接收一个无线发射单元的数据,通过包分集的方式来接收有效包信息。 Characterized in that the method receiving a radio transmission unit based on a plurality of wireless nodes while data is received, a diversity mode by receiving valid packet to packet information. 本方法基于N个无线接收节点同时接收同一个无线发射单元的数据,通过包分集的方式来接收有效包信息。 This method of simultaneously receiving data of the same radio transmitter unit based on N radio receiving node receives the packet through the packet diversity valid information. N的大小应由短程无线遥测系统的布设环境和条件(如无线接收节点和无线发射单元之间的距离,实际情况下无线传输过程中损耗等)决定。 N size should short-range wireless telemetry system layout and environmental conditions (such as the distance between the wireless node and receiving wireless transmission unit, a wireless transmission during the actual loss, etc.) determined.

[0008] 本方法中的定义:无线发射单元——每个测量模块和对应的无线通信模块;无线接收节点一无线地面接收站;组一多个无线节点同时接收同一个单元的同一个包信息;包信息——其数据结构是,包头+包索引+数据+信号强度RSSI+包校验+奇偶校验+包尾; [0008] The definition of the method: the wireless transmitting unit - each measurement module and a corresponding wireless communication module; a wireless node receives a ground radio station; a plurality of wireless nodes to simultaneously receive the same information packet with a cell ; package information - data structure, the packet header + data + index + + the RSSI signal strength packet parity check + + trailer;

[0009] 包分集步骤包括: [0009] The packet diversity step comprises:

[0010] I)每个接收节点对当前接收的包信息进行数据解析,步骤包括: [0010] I) each receiving node received packet information of the current data analysis, comprising the step of:

[0011] 先取包头,判断当前字节内容是否为包头定义内容,如果是,则进行下一步,如果不是,则取下一个包信息; [0011] First take header, determines whether the current byte in the header is defined as the content, if yes, the next step, if not, the next information packet;

[0012] 再判断包尾是否正确,或者包校验是否正确;这两个条件,任一个正确就可进行奇偶校验;如果这两个条件都不正确,则取下一个包信息; [0012] then determines whether the end of packet correctly, or the check packet is correct; these two conditions can be any of a correct parity; If these two conditions are not correct, the next information packet;

[0013] 最后进行奇偶校验,如奇偶校验正确,则取包信息中的数据;奇偶校验不正确,则取下一个包信息; [0013] Finally, parity, parity checking is correct, then take the data packet information; parity is incorrect, the next information packet;

[0014] 2)对已取得的包信息中的数据进行处理,分集,得到正确的数据、以及对应的包信息: [0014] 2) information of the packet acquired in processing diversity correct data, and the corresponding information packet:

[0015] a)对同一组中,如果解析得到的包信息只有一个,那么该包信息中的数据即为所需数据; [0015] a) of the same group, if the information obtained is only parsing a packet, then the packet data is the desired information data;

[0016] b)对同一组中,如果解析得到的包信息多于一个,则先对任意两个包信息中的数据进行比较,如果数据相同,则保留该数据;如果数据不同,则比较这两个包信息中的信号强度RSSI,保留信号强度RSSI大的包信息所对应的数据。 [0016] b) for the same group, if the package information parsed more than one, any two of the first data packet information is compared, if the same data, the data is retained; if data are different, then compare this signal strength RSSI two package information, the reservation signal strength RSSI large packet data corresponding to the information.

[0017] 对保留的数据,再与其它包信息中的数据进行比较,最终保留的数据即为正确的数据,正确数据对应的包信息即为分集得到的包信息。 [0017] The data retention, then other data packet comparison information, reserved data is the final data is correct, the correct information corresponding to the data packet is the packet information obtained by the diversity.

[0018] 所述步骤I)中,取下一个包信息的方法是,不断取下一个字节,直到所取字节内容为包头时,中断。 [0018] The step I), the method of removing a package of information is continuously removed one byte until the byte is taken content header, the interrupt.

[0019] 本方法的的分集优点是系统简单、低成本和低功耗,非常适合于短程无线遥测应用。 [0019] diversity advantage of this method is that the system is simple, low cost and low power, short range wireless telemetry is very suitable for application.

附图说明 BRIEF DESCRIPTION

[0020] 图1包信息数据结构示意图。 [0020] Fig 1 a schematic view of the data structure of the information packet.

[0021] 图2收取节点数据子程序流程图。 [0021] FIG subroutine flowchart node 2 receives the data.

[0022] 图3数据分集流程图。 [0022] FIG. 3 flowchart data diversity.

具体实施方式 detailed description

[0023] 下面结合附图与具体实施方式对本发明作进一步说明: [0023] The accompanying drawings in conjunction with the following specific embodiments of the present invention will be further described:

[0024] 无线节点:即所述无线地面接收站,用于中继从单元发送来的无线数据。 [0024] Wireless node: i.e. the ground radio station, for relaying data transmitted from the wireless unit's. 无线节点为N个,至少为I个。 Wireless node N, at least one of I. 侦听同一个单元的节点为一组。 Listen on the same node as a set of one unit. 多节点布置的目的是为了在空间上获得携带同一信息的多个无线接收数据,便于处理得到的原始信息。 Multi-purpose node is arranged to carry a plurality of wireless reception of data to obtain the same information in space, to facilitate processing original information obtained.

[0025] 单元:即所述测量模块,它具备采集和无线传输数据的功能,测量单元支持与主机串口直连来配置单元参数。 [0025] Unit: i.e. the measurement module, which has a function of acquisition and wireless transmission of data, and measuring unit supports the main unit to configure the serial port parameters are directly connected.

[0026] 包信息:是无线收发协议中的数据单元,它包括一些必要的控制信息:包头、包索弓丨、数据、信号强度RSS1、包校验、奇偶校验和包尾,其长度共13个字节(参考图1)。 [0026] pack information: a radio protocol data unit, which includes the necessary control information: packet header, the packet index bow Shu, data, signal strength RSS1, packet check, parity and trailer, a total length thereof 13 bytes (see FIG. 1).

[0027] 包分集处理方式:每个时段的节点信息是以包分集的形式处理给后继系统的,即一个数据包包含该频段N个节点的所有信息;每组一个数据包。 [0027] The packet diversity handling: node information packets for each period in the form of diversity to the subsequent processing system, i.e., a packet contains all the information of the band of N nodes; one for each packet.

[0028] 对于一个组的单元发出的无线信号,该组中的N个节点能够同时收到。 [0028] a unit for wireless signal emitted group, the group of N nodes can be simultaneously received. 包分集处理程序将对每个单元的N个包信息进行数据解析,选一个合法包信息放入内存。 Packet diversity processing program N packets of information in each cell will parse the data, selected from a legitimate packet information into memory. 根据判断包信息的信息位来验证包数据的正确性,该过程称为数据解析。 The information bit packet of information is determined to verify the correctness of the packet data, the process is called data analysis. 数据解析流程程序参考图3。 Analytical data flow of the program with reference to FIG.

[0029] 包信息进行数据解析的流程: [0029] The parsed data packet flow information:

[0030] 1、取包头,判断当前字节内容是否为包头定义内容,如果是,则进行下一步,如果不是,则取下一个包信息; [0030] 1, taken header, it determines whether the current header bytes define the content of the content, if yes, the next step, if not, the next information packet;

[0031] 2、包解析条件: [0031] 2, the packet analysis conditions:

[0032] ⑴包尾是否正确; [0032] ⑴ trailer is correct;

[0033] ⑵包校验是否正确; [0033] ⑵ check whether the packet is correct;

[0034] 以上两个条件,满足任一就可以进入奇偶校验,奇偶校验如正确则证明该数据包有效;如果都不满足,则取下一个包信息。 [0034] The above two conditions are satisfied can enter any of parity, the parity is correct as proof that the data packet is valid; if not met, the next information packet.

Claims (2)

  1. 1.一种短程无线通信包分集方法,其特征是本方法基于N个无线接收节点同时接收同一个无线发射单元的数据,通过包分集的方式来接收有效包信息;包信息的数据结构是,包头+包索引+数据+信号强度RSSI+包校验+奇偶校验+包尾; 本方法的步骤包括: 1)每个接收节点对当前接收的包信息进行数据解析; 2)对已取得的包信息中的数据进行分集处理,得到正确的数据,进而得到对应的包信息;所述分集处理步骤包括: a)对同一组中,如果数据解析得到的包信息只有一个,那么该包信息中的数据即为所需数据; b)对同一组中,如果数据解析得到的包信息多于一个,则先对任意两个包信息中的数据进行比较,如果数据相同,则保留该数据;如果数据不同,则比较这两个包信息中的信号强度RSSI,保留信号强度RSSI大的包信息所对应的数据; 所述步骤a、b中,组是指 A short-range radio communication packet diversity method, characterized in that the present method of receiving data with a wireless transmitting unit simultaneously based on the N radio receiving node, received by way of the packet diversity valid packet information; data structure of the packet of information is, packet header + data + index + + the RSSI signal strength packet parity check + + trailer; steps of the method comprising: 1) for each reception node information of a current received packet data analysis; 2) of the package has been achieved data in the diversity process, to obtain the correct data, and thus obtained packet corresponding to the information; set processing step comprises the sub-: a) for the same group, if the data analyzing packet information obtained is only one, then the packet information data is the desired data; b) of the same group, if the package information data parsed more than one, any two of the first data packet information is compared, if the same data, the data is retained; if the data are different, the comparison of these two packages RSSI signal strength information, the reservation signal strength RSSI large package information corresponding to transactions; said steps a, b, the group is a 个无线节点同时接收同一个单元的同一个包信息; 所述步骤I)的步骤包括: 1.1)先取包头,判断当前字节内容是否为包头定义内容,如果是,则进行下一步,如果不是,则取下一个包信息; 1.2)再判断包尾是否正确,或者包校验是否正确;这两个条件,任一个正确就可进行下一步;如果这两个条件都不正确,则取下一个包信息; 1.3)最后进行奇偶校验,如奇偶校验正确,则取包信息中的数据;奇偶校验不正确,则取下一个包信息。 Wireless nodes to simultaneously receive the same unit of the same information packet; said step I) comprises the step of: 1.1) take the first header, it is determined whether the current header bytes define the content of the content, if yes, the next step, if not, then removing a package information; 1.2) and then determines whether the end of packet correctly, or the check packet is correct; these two conditions, the next step can be any of a correctly; If these two conditions are not correct, the next package information; 1.3) Finally, parity, parity checking is correct, then take the data packet information; parity is incorrect, the next information packet.
  2. 2.根据权利要求1所述的短程无线通信包分集方法,其特征是所述步骤I)中,取下一个包信息的方法是,不断取下一个字节,直到所取字节内容为包头时,中断。 The short-range wireless communication packet diversity method according to claim 1, characterized in that said step I), the method of removing a package of information is continuously removed one byte until the byte is taken content header when the interrupt.
CN 201110317266 2011-10-18 2011-10-18 Short-range wireless communication package diversity method CN102315874B (en)

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