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 PDFInfo
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- CN101765229B CN101765229B CN2008102077873A CN200810207787A CN101765229B CN 101765229 B CN101765229 B CN 101765229B CN 2008102077873 A CN2008102077873 A CN 2008102077873A CN 200810207787 A CN200810207787 A CN 200810207787A CN 101765229 B CN101765229 B CN 101765229B
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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
Technical field
The present invention relates to solve the method for wlan network coverage hole, relate in particular to a kind of method that solves the wlan network coverage hole with the terminal relaying.
Background technology
Solve the way of coverage hole at present, mainly containing increases access point apparatus (AP), repeater or switch; Improve the wlan device signal sensitivity, increase signal transmission power etc.But there is following shortcoming in these schemes: interpolation equipment can increase entreprise cost, also can increase the complexity of operation maintenance; The mounting condition of access point apparatus is difficult for satisfying in some applied environment; High transmit power can cause the receiving equipment overload; Also can increase in the band simultaneously, be with outer electromagnetic interference, influence the operate as normal of adjacent channel equipment; High transmit power can not reduce building and bring the multiple scattering influence.
Summary of the invention
The object of the invention is exactly in order to overcome the defective that above-mentioned prior art exists, to provide a kind of practical and reliable to solve the method for wlan network coverage hole with the terminal relaying.
The object of the invention can be realized through following technical scheme: a kind of method with terminal relaying solution wlan network coverage hole is characterized in that this method comprises:
(1) sets up tree type routing table according to signal quality, jumping figure and device type;
(2) node signal quality evaluation;
(3) update frequency of raising node is to adapt to the switching under the high-speed mobile environment;
(4) message caching mechanism of handoff procedure;
(5) bag level power control.
Describedly set up tree type routing table according to signal quality, jumping figure and device type and comprise:
(1) the node signal quality settings gets into and withdraws from threshold value, when signal quality is higher than the access door limit value, joins candidate neighbor list; When signal quality is lower than when withdrawing from threshold value, delete out candidate neighbor list;
(2) confirm the root node of tree type route according to device type;
The jumping figure information of (3) carrying according to broadcasting packet is confirmed the routing relation between candidate neighbor list and this node;
The destination address that (4) need send when child node directly sends to root node during not at neighbor list;
The destination address that (5) need send when root node is initiated the route requests process during not at neighbor list.
Described node signal quality evaluation comprises:
(1) adopt signal smoothing to handle, to reduce the influence of random disturbances;
When (2) business being arranged, according to data frame signal quality evaluation link-quality; When not having business, according to broadcast frame signal quality assessing link quality.
The update frequency of described raising node; To adapt to switching under the high-speed mobile environment: during high-speed mobile; Need true in real time its current link quality of reflection, adopt the smoothing parameter of better the present situation of reflection in real time, the signal quality of current message will account for more at high proportion.
The message caching mechanism of described handoff procedure comprises:
(1) in the process of switching, the terminal keeps the context of new and old node, and restore data is sent after routing update, reduces packet loss;
(2) behind the handover success of terminal, send the broadcasting packet of two layers of routing update.
The method of described bag level power control comprises:
(1) nodal distance shortens, and then selects suitable neighbours' threshold value to dwindle transmitted power, guarantees the higher data transmission rate simultaneously;
(2) packet of each transmission is dynamically adjusted, to adapt to the network dramatic performance.
Compared with prior art, the present invention has the following advantages:
(1) utilizes the terminal relaying, expanded the network coverage, save construction cost;
(2) based on tree type route, it is rapid to create link;
(3) optimize data link, promote message transmission rate.
Embodiment
The present invention utilizes the terminal relaying to solve the method for wlan network coverage hole, implements this method and can effectively solve the base station signal covering difficult problem under the complex environment, expands the scope of wlan network.
Base station and terminal equipment are set up basic neighbor list through broadcasting packet, simultaneously according to the topological relation between the jumping figure in the message and establishment of device type sign and the neighbours, and set up basic tree type routing table.The destination address that need send when child node directly sends to root node during not at neighbor list; The destination address that need send when root node is initiated the route requests process during not at neighbor list.Terminal equipment so that long end-to-end communication distance to be provided, provides sufficiently high message transmission rate through a series of terminal nodes through multi-hop simultaneously.And transmitting terminal is compared to the distance between the receiving terminal; Distance between each node (every jumping) is shorter relatively, and each jumping can be accomplished the message transmission rate more much higher than direct communication, thereby makes and in the end-to-end communication system of long distance, can support high data rate equally; In the pattern of this terminal relaying; Each node only need transmit very short distance, so their transmitted power is less relatively, thereby reduces intrasystem interference greatly and makes more crypto set of channeling.In addition, transmit data owing to can jump through intermediate node, network make signal can the cut-through thing and the obturator of local network set up the route of stalwartness.
Claims (1)
1. one kind solves the method for wlan network coverage hole with the terminal relaying, it is characterized in that this method comprises:
(1) sets up tree type routing table according to signal quality, jumping figure and device type;
(2) node signal quality evaluation;
(3) update frequency of raising node is to adapt to the switching under the high-speed mobile environment;
(4) message caching mechanism of handoff procedure;
(5) bag level power control;
Describedly set up tree type routing table according to signal quality, jumping figure and device type and comprise:
(1) the node signal quality settings gets into and withdraws from threshold value, when signal quality is higher than the access door limit value, joins candidate neighbor list; When signal quality is lower than when withdrawing from threshold value, delete out candidate neighbor list;
(2) confirm the root node of tree type route according to device type;
The jumping figure information of (3) carrying according to broadcasting packet is confirmed the routing relation between candidate neighbor list and this node;
The destination address that (4) need send when child node directly sends to root node during not at neighbor list;
The destination address that (5) need send when root node is initiated the route requests process during not at neighbor list;
Described node signal quality evaluation comprises:
(1) adopt signal smoothing to handle, to reduce the influence of random disturbances;
When (2) business being arranged, according to data frame signal quality evaluation link-quality; When not having business, according to broadcast frame signal quality assessing link quality;
The update frequency of described raising node; To adapt to switching under the high-speed mobile environment: during high-speed mobile; Need true in real time its current link quality of reflection, adopt the smoothing parameter of better the present situation of reflection in real time, the signal quality of current message will account for more at high proportion;
The message caching mechanism of described handoff procedure comprises:
(1) in the process of switching, the terminal keeps the context of new and old node, and restore data is sent after routing update, reduces packet loss;
(2) behind the handover success of terminal, send the broadcasting packet of two layers of routing update;
The method of described bag level power control comprises:
(1) nodal distance shortens, and then selects suitable neighbours' threshold value to dwindle transmitted power, guarantees the higher data transmission rate simultaneously;
(2) packet of each transmission is dynamically adjusted, to adapt to the network dramatic performance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102077873A CN101765229B (en) | 2008-12-25 | 2008-12-25 | Method for solving WLAN network coverage blind area by terminal relay |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102077873A CN101765229B (en) | 2008-12-25 | 2008-12-25 | Method for solving WLAN network coverage blind area by terminal relay |
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| Publication Number | Publication Date |
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| CN101765229A CN101765229A (en) | 2010-06-30 |
| CN101765229B true CN101765229B (en) | 2012-07-25 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103517323B (en) * | 2012-06-20 | 2017-03-08 | 华为技术有限公司 | The data transmission method of Wireless Heterogeneous Networks, shunting device, base station equipment |
| WO2017166139A1 (en) | 2016-03-30 | 2017-10-05 | 广东欧珀移动通信有限公司 | Relay transmission method and device |
| CN105873086A (en) * | 2016-06-16 | 2016-08-17 | 中国民用航空总局第二研究所 | Airport surface wireless communication system and wireless terminal |
| CN114046794B (en) * | 2021-09-27 | 2024-01-26 | 高德软件有限公司 | Route planning method, route planning device, navigation method and computer readable storage medium |
Citations (3)
| 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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- 2008-12-25 CN CN2008102077873A patent/CN101765229B/en active Active
Patent Citations (3)
| 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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| CN101765229A (en) | 2010-06-30 |
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Address after: 200241, No. 555 Dongchuan Road, Shanghai, Minhang District, building 6, 02B Applicant after: Shanghai Huanchuang Communication Technology Co., Ltd. Address before: 200241, room 6, building 555, 602 Dongchuan Road, Shanghai, Minhang District Applicant before: Shanghai Gbcom Co., Ltd. |
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