CN101765229B - Method for solving WLAN network coverage blind area by terminal relay - Google Patents

Method for solving WLAN network coverage blind area by terminal relay Download PDF

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Publication number
CN101765229B
CN101765229B CN 200810207787 CN200810207787A CN101765229B CN 101765229 B CN101765229 B CN 101765229B CN 200810207787 CN200810207787 CN 200810207787 CN 200810207787 A CN200810207787 A CN 200810207787A CN 101765229 B CN101765229 B CN 101765229B
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node
signal quality
method
quality
signal
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CN 200810207787
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CN101765229A (en
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吴亮
韩冲
韩晓光
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上海寰创通信科技股份有限公司
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Abstract

The invention relates to a method for solving a WLAN network coverage blind area by a terminal relay, which comprises the steps of: building a treelike route table according to the quality and the hop count of a signal and the type of equipment; valuing the quality of a node signal; improving the update frequentness of a node to be adapted to switching under the environment with high-speed movement; caching a report in the process of switching; and controlling the power of package level. Compared with the prior art, the method has the following advantages of expanding the network coverage, saving the building cost with the terminal relay, fast building a link based on the treelike route and optimizing data link and improving data transmission speed.

Description

—种用终端中继解决WLAN网络覆盖盲区的方法 - a relay method to solve the kind of terminal WLAN network coverage hole

技术领域 FIELD

[0001] 本发明涉及解决WLAN网络覆盖盲区的方法,尤其涉及一种用终端中继解决WLAN 网络覆盖盲区的方法。 [0001] The present invention relates to a method to solve the WLAN network coverage hole, particularly relates to a method of solving the relay terminal of the WLAN coverage hole.

背景技术 Background technique

[0002]目前解决覆盖盲区的办法,主要有増加接入点设备(AP)、中继器或交換机;提高WLAN设备信号灵敏度,増加信号发射功率等。 [0002] The current solution to the coverage hole, mainly to increase in the access point device (the AP), a repeater or switch; WLAN device to improve signal sensitivity, the signal to increase in transmit power. 但是这些方案存在以下缺点:添加设备会增加企业成本,还会增加运行维护的复杂性;某些应用环境中接入点设备的安装条件不易满足;高发射功率会造成接收设备过载;同时也会增加带内,带外电磁干扰,影响相邻信道设备的正常工作;高发射功率不能降低建筑物带来多径散射影响。 But the existence of these programs the following disadvantages: add device will increase the cost of doing business, but also increase the complexity of the operation and maintenance; installation conditions in certain application environments access point device is not easy to meet; high transmit power will cause the receiving device overload; will also increase in the band, band electromagnetic interference, affecting the normal operation of the adjacent channel device; high transmit power can not be reduced to bring the building influence of multipath scattering.

发明内容 SUMMARY

[0003] 本发明的目的就是为了克服上述现有技术存在的缺陷,提供ー种实用可靠的用终端中继解决WLAN网络覆盖盲区的方法。 [0003] The object of the present invention is to solve the problems of the above prior art, there is provided a method ー kinds of practical and reliable solution relay terminal WLAN network coverage hole.

[0004] 本发明的目的可以通过以下技术方案来实现:一种用终端中继解决WLAN网络覆盖盲区的方法,其特征在于,该方法包括: [0004] The object of the present invention can be achieved by the following technical solution: A method for solving the WLAN terminal repeater coverage hole, characterized in that, the method comprising:

[0005] (I)根据信号质量、跳数及设备类型建立树型路由表; [0005] (I) according to the signal quality, number of hops and tree routing table to establish the type of device;

[0006] (2)节点信号质量评估; [0006] (2) a signal quality evaluation node;

[0007] (3)提高节点的更新頻度,以适应高速移动环境下的切換; [0007] (3) to increase the update frequency of the node to adapt to high-speed mobile environment is switched;

[0008] (4)切换过程的报文缓存机制; [0008] The packet buffer mechanism (4) handover procedure;

[0009] (5)包级功率控制。 [0009] (5) the packet-level power control.

[0010] 所述的根据信号质量、跳数及设备类型建立树型路由表包括: [0010] According to the signal quality, number of hops and tree routing table to establish the type of device comprising:

[0011] (I)节点信号质量设定进入和退出门限值,当信号质量高于进入门限值时,加入到候选邻居列表;当信号质量低于退出门限值时,删除出候选邻居列表; [0011] (I) the node entry and exit signal quality threshold setting, when the signal quality is higher than the threshold value entered, added to the candidate neighbor list; exit when the signal quality is below the threshold, deleting the candidate neighbor list;

[0012] (2)根据设备类型确定树型路由的根节点; [0012] (2) determining the root tree routing device type;

[0013] (3)根据广播报文携帯的跳数信息确定候选邻居列表与本节点之间的路由关系; [0013] (3) determining the routing relationship between the candidate neighbor node with the list of broadcast packets carrying Bands of number of hops;

[0014] (4)当子节点需要发送的目的地址不在邻居列表时,直接发送到根节点; [0014] (4) When the destination address of the child node sends neighbor list is not sent directly to the root node;

[0015] (5)当根节点需要发送的目的地址不在邻居列表吋,发起路由请求过程。 [0015] (5) when the destination address is not the root node needs to send a neighbor list inch, initiates a route request procedure.

[0016] 所述的节点信号质量评估包括: [0016] The signal quality evaluation node comprising:

[0017] (I)采用信号平滑处理,以减少随机干扰的影响; [0017] (I) using the signal smoothing to reduce the effect of random noise;

[0018] (2)有业务时,根据数据帧信号质量评估链路质量;没有业务时,根据广播帧信号质量评估链路质量。 [0018] (2) when there is traffic, link quality assessment in accordance with the signal quality of the data frame; when there is no traffic, the link quality signal quality evaluated according to the broadcast frame.

[0019] 所述的提高节点的更新頻度,以适应高速移动环境下的切换为:高速移动时,需要实时真实反映其当前的链路质量,采用更好实时反映当前状况的平滑參数,当前报文的信号质量将占更高比例。 Improve the node [0019] The update frequency, switching to accommodate high-speed mobile environment: moving at high speed, which requires real-time transactions to reflect the current link quality using the smoothing parameter to better reflect the current situation, the current signal quality will account for a higher proportion of packets.

[0020] 所述的切换过程的报文缓存机制包括:[0021] (I)在切换的过程中,終端保持新旧节点的上下文,当路由更新后恢复数据发送, 减少丢包; Packet cache mechanism of a handover procedure according to [0020] comprising: [0021] (I) in the process of handover, the terminal holding old and new context node, when the routing update recover the transmitted data, reducing the packet loss;

[0022] (2)終端切換成功后,发送ニ层路由更新的广播报文。 [0022] (2) switch terminal successfully transmits Ni layer routing update broadcast messages.

[0023] 所述的包级功率控制的方法包括: [0023] The method of controlling the power level of the packet comprises:

[0024] (I)节点距离缩短,则选择合适的邻居门限值以缩小发送功率,同时保证较高的数据发送速率; [0024] (I) node distance is shortened, the neighbors select the appropriate threshold value to reduce transmission power while maintaining a high data transmission rate;

[0025] (2)对每个发送的数据包进行动态调整,以适应网络多变特性。 [0025] (2) is dynamically adjusted for each packet sent, in order to adapt to the changing characteristics of the network.

[0026] 与现有技术相比,本发明具有以下优点: [0026] Compared with the prior art, the present invention has the following advantages:

[0027] (I)利用終端中继,扩展了网络覆盖,节省建设费用; [0027] (I) using the relay terminal, expanded coverage, cost-saving construction;

[0028] (2)基于树型路由,创建链路迅速; [0028] (2) based on the routing tree, creating a link quickly;

[0029] (3)优化数据链路,提升数据传输速率。 [0029] (3) optimizing a data link, to enhance the data transmission rate.

具体实施方式 Detailed ways

[0030] 本发明为利用終端中继解决WLAN网络覆盖盲区的方法,实施该方法可以有效解决复杂环境下的基站信号覆盖难题,拓展WLAN网络的范围。 [0030] The present invention is a method of using the terminal WLAN coverage blind relay solved embodiment the method may effectively solve the problem of the base station coverage in complex environments, to expand the range of the WLAN.

[0031] 基站和终端设备通过广播报文建立基本邻居列表,同时根据报文中的跳数和设备类型标识确立和邻居之间的拓扑关系,并建立基本树型路由表。 [0031] the base station and the terminal apparatus is established by broadcasting packets substantially neighbor list, while establishing the relationship between the topology and the neighbor packets according to the number of hops and the device type identifier, and to establish the basic tree routing table. 当子节点需要发送的目的地址不在邻居列表时,直接发送到根节点;当根节点需要发送的目的地址不在邻居列表吋, 发起路由请求过程。 When the destination address of the child node sends neighbor list is not sent directly to the root node; when the destination address is not the root node needs to send a neighbor list inch, initiates a route request procedure. 终端设备通过多跳,经ー系列終端节点以提供长的端到端通信距离, 同时提供足够高的数据传输速率。 Multi-hop terminal, the terminal node ー series end to provide a long communication distance, while providing a sufficiently high data transfer rate. 和发送端到接收端之间的距离相比,各节点之间的距离(每跳)相对较短,每ー跳可以完成比直接通信高得多的数据传输速率,从而使得在长距离的端到端通信系统中同样能支持高数据传输速率,在这种终端中继的模式中,每个节点只需传输很短的距离,所以它们的发送功率相对较小,从而大大降低系统内的干扰并使频率复用可以更加密集。 And compared to the distance between the sender to the receiving end, the distance between nodes (per hop) is relatively short, each hop can be done ー much higher data transfer rate than the direct communication, so that the end of the long distance Similarly to the end of the communication system to support high data transfer rates, the relay terminal in this mode, each node transmitted only a short distance, so that their transmission power is relatively small, thus greatly reducing the interference in the system and frequency reuse can be more intensive. 另外,由于可跳经中间节点传送数据,网络使得信号可以绕过障碍物和本地网络的阻塞物建立健壮的路由。 Further, since the intermediate node to transmit data via the jump, so that the signal can be a network and a local network around obstacles to establish robust obstruction route.

Claims (1)

1. 一种用终端中继解决WLAN网络覆盖盲区的方法,其特征在于,该方法包括:(1)根据信号质量、跳数及设备类型建立树型路由表;(2)节点信号质量评估;(3)提高节点的更新頻度,以适应高速移动环境下的切換;(4)切换过程的报文缓存机制;(5)包级功率控制;所述的根据信号质量、跳数及设备类型建立树型路由表包括:(1)节点信号质量设定进入和退出门限值,当信号质量高于进入门限值时,加入到候选邻居列表;当信号质量低于退出门限值时,删除出候选邻居列表;(2)根据设备类型确定树型路由的根节点;(3)根据广播报文携帯的跳数信息确定候选邻居列表与本节点之间的路由关系;(4)当子节点需要发送的目的地址不在邻居列表时,直接发送到根节点;(5)当根节点需要发送的目的地址不在邻居列表吋,发起路由请求过程;所述的节点信号质量评估包括: CLAIMS 1. A method in a network terminal WLAN coverage hole relaying solution, characterized in that the method comprises: (1) The signal quality, number of hops and tree routing table to establish the type of equipment; (2) the signal quality evaluation node; (3) to increase the update frequency of the node to accommodate handover in high-speed mobile environment; packet buffer mechanism (4) handover procedure; (5) the packet-level power control; according to signal quality, number of hops and the type of device to establish tree routing table comprising: (1) setting the node entry and exit signal quality threshold, when the signal quality is higher than the threshold value entered, added to the candidate neighbor list; exit when the signal quality is below the threshold, deleting candidate neighbor list; (2) the type of tree routing determination device according to the root; (4) when the child node; and (3) determining the routing relationship between the candidate neighbor node list information according to the number of hops of broadcast packets carrying Bands when the destination address of the transmission is not in the neighbor list, sent directly to the root node; (5) when the destination address is not the root node needs to send a neighbor list inch, initiates a route request process; assessment of the signal quality of the node comprises: (1)采用信号平滑处理,以减少随机干扰的影响;(2)有业务时,根据数据帧信号质量评估链路质量;没有业务时,根据广播帧信号质量评估链路质量;所述的提高节点的更新频度,以适应高速移动环境下的切换为:高速移动时,需要实时真实反映其当前的链路质量,采用更好实时反映当前状况的平滑參数,当前报文的信号质量将占更闻比例;所述的切换过程的报文缓存机制包括:(1)在切换的过程中,終端保持新旧节点的上下文,当路由更新后恢复数据发送,減少丢包;(2)終端切換成功后,发送ニ层路由更新的广播报文;所述的包级功率控制的方法包括:(1)节点距离缩短,则选择合适的邻居门限值以缩小发送功率,同时保证较高的数据发送速率;(2)对每个发送的数据包进行动态调整,以适应网络多变特性。 (1) The signal smoothing to reduce the effect of random interference; (2) there is traffic, link quality based on the data frame signal quality evaluation; when there is no traffic, the quality of the broadcast frame based on the evaluation signal quality of the link; the improvement update frequency, to accommodate high-speed mobile switching node environment: moving at high speed, which requires real-time transactions to reflect the current link quality using the smoothing parameter to better reflect the current state of the current signal quality of the packets more proportion accounted smell; packet cache mechanism of the handover procedure comprises: (1) during the handover, the terminal holding old and new context node, when the routing update recover the transmitted data, to reduce loss; (2) switch terminal after successfully sending routing update messages broadcast Ni layer; method of package-level power control comprises: (1) node distance is shortened, the neighbors select the appropriate threshold to reduce the transmission power while ensuring high data transmission rate; (2) is dynamically adjusted for each packet sent, in order to adapt to the changing characteristics of the network.
CN 200810207787 2008-12-25 2008-12-25 Method for solving WLAN network coverage blind area by terminal relay CN101765229B (en)

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CN1675892A (en) 2002-08-23 2005-09-28 皇家飞利浦电子股份有限公司 Method and apparatus for assuring quality of service in wireless local area networks
CN1750489A (en) 2004-09-17 2006-03-22 武汉中维宽带通信技术有限公司 Method for constructing extendable WLAN network using general WLAN access point
WO2006031159A1 (en) 2004-09-17 2006-03-23 Telefonaktiebolaget Lm Ericsson (Publ) 3g/gsm and wlan integration of telephony

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Publication number Priority date Publication date Assignee Title
CN1675892A (en) 2002-08-23 2005-09-28 皇家飞利浦电子股份有限公司 Method and apparatus for assuring quality of service in wireless local area networks
CN1750489A (en) 2004-09-17 2006-03-22 武汉中维宽带通信技术有限公司 Method for constructing extendable WLAN network using general WLAN access point
WO2006031159A1 (en) 2004-09-17 2006-03-23 Telefonaktiebolaget Lm Ericsson (Publ) 3g/gsm and wlan integration of telephony

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