CN101237682A - Wireless network system and its connection method - Google Patents
Wireless network system and its connection method Download PDFInfo
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- CN101237682A CN101237682A CNA200710019966XA CN200710019966A CN101237682A CN 101237682 A CN101237682 A CN 101237682A CN A200710019966X A CNA200710019966X A CN A200710019966XA CN 200710019966 A CN200710019966 A CN 200710019966A CN 101237682 A CN101237682 A CN 101237682A
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Abstract
The invention discloses a wireless network system and a connection method thereof, relating to the wireless mesh network design field, wherein each movable node inside the network at least comprises two wireless devices respectively using a first wireless channel and a second wireless channel; when a node is connected with the network for the first time, or needs to be reconnected due to the interruption of a first type of link, or needs to be connected with a new uplink node due to position change, the node searches a wireless device in an access point mode inside the connectible uplink node; therefore, a corresponding customer mode inside both wireless devices is adjusted accordingly to be connected with the uplink node through the first wireless channel or the second wireless channel. The wireless network system, which allows part or all nodes inside the wireless network to move, realizes dynamic reconfiguration of the wireless mesh network and ensures smooth network connection.
Description
Technical field:
The present invention relates to a kind of Radio Network System and attaching method thereof, particularly relevant a kind of based on wireless mesh network (Wireless Mesh Network, WMN) system and attaching method thereof that under mobile and/or one or more node off state, keeps communication capacity.
Background technology:
(use of WLAN is universal day by day in recent years for Wireless Local Area Network, the WLAN) fast development of technology along with WLAN (wireless local area network).By means of the WLAN technology, the user can (Access Point passes through the AP access to LAN in wireless signal covering area range AP) at its access point.Yet, although the development of WLAN has entered the technology maturation phase, its technical defective also is conspicuous, because the limited coverage area of each AP, WLAN can't accomplish to resemble that ubiquitous signal covers the cellular network, and the raising of its coverage rate is cost with the sky high cost.Therefore, a kind of based on wireless mesh network (WMN) technology with self (Self-Organized) and oneself's setting (Self-Configured) ability is being released rapidly in the several years recently, and becomes new generation of wireless Research of Communication Technology focus.
WMN is a kind of based on wireless mesh network based on " point-to-point " multi-hop route technology, and usually, WMN forms network structure by client node (Client Node), AP that is router node (RouterNode) and gateway node (Gateway Node).WMN can be divided into planar structure, multilevel hierarchy and mixed structure by the network configuration level, in the WMN of different structure level, its function of dissimilar nodes also has nothing in common with each other, for example in the WMN of planar structure, each node all comprises identical MAC (Medium Access Control, the medium access control), route, management and security protocol, both had the client node function, have the AP nodal function that can transmit data again.And in multilevel hierarchy and mixed structure, client node is connected by the relaying IAD between the AP and then with wired internet by communicating by letter with other client nodes then in the wireless signal between the AP.Therefore, in the WMN of multistage or mixed structure, the data that the client node of each AP in will being responsible for transmitting itself coverage requires to transmit, also must be responsible for other AP and require the data of sending, transmit with " relay " that realizes data-signal in the network.
Owing to be to interconnect and transmit data between each AP among the WMN by the radio frequency mode, do not coordinate to dispose less radio-frequency channel (Radio Channel) between each node if having effective scheme or agreement, then each node can't be kept reliable connection each other, and it is fragile that the communication capacity of WMN becomes.Therefore, for the based on wireless mesh network node that a plurality of radio devices are arranged, the configuration of less radio-frequency channel is the vital factor that influences node connection and whole network performance.In any wireless network,, will directly have a negative impact to end-to-end capacity in the network if any one quality of radio connection has problem in the network.For example, in the local wireless mesh network structure that comprises node 10,20 and 30 shown in Figure 1:
Wherein, R
i(i=A, B, C, D) be to use less radio-frequency channel i (i=A, B, C, radio device D):
R
ACan only pass through channel A and other R
AConnect;
R
BCan only pass through channel B and other R
BConnect;
R
CCan only pass through channel C and other R
CConnect;
R
DCan only pass through channel D and other R
DConnect.
And, the R in the node 10
AWith R
B, the R in the node 20
BAnd R
CAnd the R in the node 30
CAnd R
DBe respectively to link together by wired mode, Ethernet (Ethernet) for example.
Communication between node 10 and the node 30 is to realize by the radio relay communication of node 20.Yet, if node 20 has had fault, for example node 20 can not use or node 20 moves to beyond the coverage of node 10 and/or node 30, at this moment, because node 10 is different with node 30 employed less radio-frequency channels, can't keep connection between node 10 and the node 30, as shown in Figure 2.
For the WMN of a planar structure, each node that wherein has the wireless router function can utilize the radio device that himself disposes to reconnect in mobile Ad hoc mode.If this network is the WMN of a multistage or mixed structure, node 1 is a client node (terminal), node 2 and node 3 are respectively network AP, node 2 faults or shift out node 1 and/or the coverage of node 3 after, pass through to carry out existing procotol standard between node 1 and the node 3, for example IEEE 802.11 or other mobile communication network protocols, keep or rebulid connection, this process can be with reference to the connected mode between terminal among the existing WLAN and the network AP of fixing.If node 1, node 2 and node 3 all are AP movably among the WMN, for the communication between these nodes, in wireless communication field, do not form the consensus standard of generally acknowledging at present as yet, and in existing communication network standards, have only IEEE 802.11 and IEEE 802.16 agreements to support the function of WMN part.Owing to comprise among the WMN of a plurality of movably AP nodes, when AP moves, must give other a large amount of nodes with the change notification of network configuration, because each node all needs to understand to a certain extent other each nodes, particularly its upstream node (Uplink Node) wherein.Therefore, no matter which kind of standard WMN uses, and all needs to carry out complicated MAC agreement and routing algorithm, and this causes network operation process generation multi-user conflict, packet loss mistake and is connected interruption etc., network efficiency significantly descends, particularly when the number of nodes in the network increases.
Summary of the invention:
The object of the present invention is to provide a kind of Radio Network System, with the normal connection of under mobile condition, keeping wireless network with communicate by letter, and when one or more nodes open circuit, can keep and communicate by letter with other node joint faces.
Another object of the present invention provides a kind of method of attachment of wireless network, to utilize simple relatively wireless system and algorithm, the normal connection of under mobile condition, keeping wireless network with communicate by letter, and when one or more nodes open circuit, can be connected and keep communication with other nodes.
The objective of the invention is to be achieved through the following technical solutions:
A kind of Radio Network System, include a plurality of removable nodes, each removable node includes one first radio device and one second radio device at least, wherein first radio device uses the first less radio-frequency channel, second radio device uses the second less radio-frequency channel, first radio device in each removable node and second radio device can be selected one respectively and dynamically adjust in client's pattern (Client Mode) and access point mode (AP Mode), and first in the same removable node, two radio devices are in different mode respectively, each removable node is to utilize its first radio device that is in client's pattern or second radio device, realizes being connected with first radio device that is in access point mode in its first kind node or second radio device.
Further, in the above-mentioned Radio Network System, when first radio device in the available first kind node of a removable node is in access point mode, first radio device in this removable node is adjusted into client's pattern, and uses the first less radio-frequency channel and this first kind node to realize being connected; When second radio device in this available first kind node was in access point mode, second radio device in this removable node was adjusted into client's pattern, and used the second less radio-frequency channel and this first kind node to realize being connected.
Further, in the above-mentioned Radio Network System, the first less radio-frequency channel is set to channel 1, the second less radio-frequency channel among the IEEE 802.11g and is set to channel 11 among the 802.11g, is connected by the 802.11g agreement between the node of wireless network and the node.
Further, in the above-mentioned Radio Network System, also include stationary nodes, stationary nodes is connected to cable network by wired mode, includes one first radio device or one second radio device in each stationary nodes at least.
The present invention also provides a kind of method of attachment of wireless network, comprising:
Provide at least one first radio device and one second radio device to each the removable node in this wireless network, and set first radio device and use the first less radio-frequency channel, second radio device uses the second less radio-frequency channel, first and second radio device can be selected one respectively and dynamically adjust in client's pattern and access point mode, and first and second radio device in the same node is in different mode respectively;
Each removable node utilizes its first or two radio devices that are in client's pattern to detect, to confirm whether to exist the first kind link that is connected with first kind node;
If the first kind link of a certain node does not connect, then this node utilizes its first radio device that the first less radio-frequency channel is scanned, and utilizes its second radio device that the second less radio-frequency channel is scanned;
If first radio device of this node is found attachable first kind node, then its first radio device is adjusted into client's pattern, and is connected with first kind node at the first less radio-frequency channel by its first radio device; If second radio device of this node is found attachable first kind node, then its second radio device is adjusted into client's pattern, and is connected with first kind node at the second less radio-frequency channel by its second radio device.
Further, in the above-mentioned method of attachment, if second radio device of this node of reconnaissance phase is in client's pattern, then when first radio device is found attachable first kind node, this node waited for earlier whether second radio device also finds attachable first kind node before first radio device is adjusted into client's pattern; If second radio device is also found attachable first kind node, then this node keeps its second radio device to be client's pattern, and is connected with first kind node at the second less radio-frequency channel by its second radio device.
Different with existing network system and connected mode is that in the Radio Network System of the present invention, each removable node all comprises first and second radio device at least, and first and second radio device uses first and second less radio-frequency channel respectively.Need reconnect or need be connected to new first kind node because of position change the time at the first access network of a certain node, because of first kind link down, by carrying out method of attachment of the present invention, this node is through detecting, scanning, find to be in the attachable first kind node less radio-frequency channel of the radio device of access point mode, be client's pattern thereby correspondingly adjust its first or two radio device, and then realize being connected at corresponding first or two less radio-frequency channels and first kind node.Therefore, the present invention can allow the part or all of node motion in the wireless network, thereby realizes the dynamic reorganization of based on wireless mesh network, and it is unimpeded to guarantee that simultaneously network connects.System compares with existing network, the present invention has avoided complicated algorithm and less radio-frequency channel to switch, and the structure of whole network system is simple relatively, the wireless channel that takies is less, system's antijamming capability is strong, can effectively reduce the defectives such as co-channel interference, multi-user conflict and packet loss mistake of network operation process.
Description of drawings:
Fig. 1 is a kind of partial structurtes schematic diagram of existing based on wireless mesh network.
Fig. 2 is that existing wireless network shown in Figure 1 connects the schematic diagram that interrupts.
Fig. 3 is the partial structurtes schematic diagram of Radio Network System of the present invention.
Fig. 4 is a schematic diagram of keeping connection in the wireless network shown in Figure 3 under the node motion state.
Fig. 5 is a node failure schematic diagram in the wireless network shown in Figure 3.
Fig. 6 is a schematic diagram of keeping connection in the wireless network shown in Figure 5 behind the node failure.
Fig. 7 is the flow chart of the method for attachment of wireless network of the present invention.
Embodiment:
The invention provides a kind of Radio Network System, in a preferred embodiment, this spider lines system is a based on wireless mesh network (WMN), sees also Fig. 3, in partial structurtes of this based on wireless mesh network, include node 1, node 2, node 3 and node 4, wherein node 1 is a stationary nodes, gateway node for example, and it is connected to the Internet 100 by wired mode, and node 2,3 and 4 is removable nodes, for example movably access point (AP) or client terminal.In these removable nodes 2,3 and 4, each node includes one first identical radio device R at least
AWith one second radio device R
B, wherein, R
ABe to use the radio device of the first less radio-frequency channel A, R
BBe to use the radio device of the second less radio-frequency channel B, and, R
ACan only be by the R in the first less radio-frequency channel A and other nodes
AConnect R
BCan only be by the R in the second less radio-frequency channel B and other nodes
BConnect.
In a preferred embodiment, the first less radio-frequency channel A is set to channel 1, the second less radio-frequency channel B among the IEEE802.11g and is set to channel 11 among the 802.11g, is connected by the 802.11g agreement between the node of wireless network and the node.
The node 1 of fixed-site includes at least one radio device, for example the second radio device R
BUnderstand easily, no matter be stationary nodes 1, or aforementioned removable node 2,3 and 4, the quantity of the radio device in each node is not limited to the description of present embodiment.
In the based on wireless mesh network shown in Figure 3, the communication between node 4 and the node 1 is to realize by the radio relay communication of node 2 and node 3.Wireless connections between node 1 and the node 2 realize that by channel B the wireless connections between node 2 and the node 3 realize that by channel A the wireless connections between node 3 and the node 4 then realize by channel B.
In a based on wireless mesh network, the node being directly connected to wired internet or in-house network is defined as " root node (Root Node) ", and handle and the nearer node of root node distance are defined as " first kind node (Uplink Node) ".For example, in Fig. 3, the stationary nodes 1 that is connected to the Internet 100 by wired mode promptly is a root node, and node 1 is the first kind node of node 2, node 3 and node 4, node 2 is first kind nodes of node 3 and node 4, and node 3 is first kind nodes of node 4.
The first radio device R in node 2, node 3 and the node 4
AWith the second radio device R
BCan in client's pattern (Client Mode) and access point mode (AP Mode), select one respectively and dynamically adjust, and first and second radio device R in the same node
A, R
BBe in different mode respectively.For example in Fig. 3, as a preferred embodiment, node 4 is connected with node 3 by the channel 11 of 802.11g, and node 3 is as the first kind node of node 4, its second radio device R
BBe the access point mode of 802.11g agreement, and the second radio device R in the node 4
BThen should be client's pattern of 802.11g agreement mutually.Similarly, node 2 is as the first kind node of node 3, its first radio device R
ABe access point mode, and the first radio device R of node 3
ABe client's pattern, node 3 can be connected with node 2 by the first less radio-frequency channel A like this.Understand easily, as the radio device R in the node 1 of root node
BRemain access point mode.
See also shown in Figure 7ly, the method for attachment of Radio Network System of the present invention comprises process 101 to 115, specifies as follows.
After process 101 started linker, system detected (Detection) process 102.In this process, each removable node utilizes it to be in first or two radio device R of client's pattern
AOr R
B(Uplink) detects to first kind link, to confirm whether to exist the first kind link that is connected with first kind node.With the node among Fig. 34 is example, sets its second radio device R
BBe client's pattern, after starting linker, node 4 will utilize R wherein
BDetect to determine the current first kind link that is connected with first kind node that whether exists.
Detecting process purpose is to confirm whether exist with being connected of first kind node.The connectedness of descendant node does not need detecting, because if the whole netted node in the network is all carried out the detecting to first kind link, so just can keep the connectedness of whole network.If first kind link is not communicated with or the bandwidth of first kind link is low, then the communication of down link can be hindered or low bandwidth too.Therefore, it is just passable only to detect first kind link.
The condition that causes the detecting process can be following several, but is not limited thereto:
(1) the first energising of netted node starts;
(2) cause radio signal to disappear because of having gone out wireless coverage or radio frequency obstacle;
(3) serious interference conflict;
(4) because of relatively poor service quality (Quality of Service, QoS), serious packets of information postpones, do not have (or low) data throughput and trigger software control;
(5) connection failure.
Scanning (Scanning) process: through detecting, do not connect if find first kind link, then this node utilizes its first radio device R
AThe first less radio-frequency channel A is scanned, utilize its second radio device R
BThe second less radio-frequency channel B is scanned, shown in the process among Fig. 7 103,104,105 and 106.
In the radio device of wireless lan (wlan), can provide the scan performance that covers WLAN frequency band (2.4GHz and 5GHz).In scanning process, radio device is collected the following message of available first kind node:
(1) signal strength signal intensity;
(2) noise (Signal to noise ratio);
(3) first kind node characteristic (Uplink nodes identity)
(4) cipher mode (Encryption method)
(5) current communication condition indicating device (Indicator of current trafficcondition).
Owing to have a plurality of radio devices in the netted node, each radio device all enters and pre-determines the scan pattern that scanning channel is provided with, for example, 2.4GHz the WLAN frequency band in have three uncovered channels (channel 1,6 and 11), our predetermined scanning channel setting is channel 1 and 11, radio device in the netted like this node is a scanning channel 1 and 11, and do not scan other channels.
(Discovery) process of discovery; The scanning activity of radio device approximately needs some milliseconds time.Behind the scan report of receiving from last radio device, if the first radio device R of node to be connected
AFind that (RA that this means this node finds to exist other R that are in access point (AP) pattern to attachable first kind node on channel A
A), then with its first radio device R
ABe adjusted into client's pattern; If the second radio device R of this node
BFind attachable first kind node, then with its second radio device R
BBe adjusted into client's pattern.
In discovery procedure, better mode is behind the scan report of receiving from last radio device, makes decision according to following column major order:
(1) do not change the current channel setting of radio device.
For example, if node 4 is to be connected by channel 11 (channel B) with its first kind node 3 originally, when the first kind link between this node 4 and this first kind node 3 disappeared, node 4 reconnected high-priority in connecting by other channels and other first kind nodes by channel 11 and other first kind nodes.
(2) indicating device best in quality.Quality indicator can be the weighted function of a throughput, the jumping figure that arrives root node, stand-by period, signal strength signal intensity, the when current communication load of noise etc.
See also the process 107 to 111 of Fig. 7, as the corresponding preferred embodiment of the above-mentioned priority of reflection, if the second radio device R of this node of detecting process
BBe in client's pattern (promptly this node before had been to be connected with first kind node by channel B), as the first radio device R
AWhen finding attachable first kind node, this node is with the first radio device R
ABe adjusted into before client's pattern, can wait for the second radio device R earlier
BWhether also find attachable first kind node (process 107).If the second radio device R
BAlso find attachable first kind node, then this node keeps its second radio device R
BBe client's pattern, be connected with first kind node thereby be still by channel B.
Connect (Connection) process: shown in the process among Fig. 7 112 to 115,, be adjusted to the radio device R of client's pattern in this node according to the decision that is connected to which first kind node that aforementioned discovery procedure is made
AOr R
BWill with the R of the access point mode of first kind node
AOr R
BBe connected.No matter be what reason, if the connection failure of first kind node then will re-execute aforementioned detecting, scanning, discovery and connection procedure.
In based on wireless mesh network shown in Figure 3, when network system started, each node in the network all needed to carry out the method for attachment of aforementioned based on wireless mesh network, could guarantee that like this whole system can be dynamically connected certainly when starting.
Fig. 4 has shown kept internetwork connection mode when the node motion in the network, at this moment, each node in the network all will be carried out the method for attachment of aforementioned based on wireless mesh network, thereby make when node motion, and each node in the Radio Network System still can reconnect automatically.For example, node 4 moves to the P2 position from the P1 position, and the P2 position is not within the wireless coverage of the previous first kind node 3 of node 4, but within the wireless coverage of node 2.By carrying out aforementioned method of attachment, maintain being connected on the channel B between node 2 and the node 1, maintain the connection on channel A between node 3 and the node 2.And node 4 is through carrying out detecting, scanning and discovery procedure, its first radio device R
AFind attachable first kind node 2, and the second electric installation R of radio factory
BDo not find available first kind node, therefore, node 4 will be adjusted its R
ABe client's pattern, thereby by being connected with the RA of the access point mode of node 2 by channel A.
When a certain node in the network breaks down, opens circuit or shifts out wireless coverage, each node in the Radio Network System all will be carried out aforementioned method of attachment, thereby each node in the network can be reconnected automatically.For example, in Fig. 5, node 2 has moved to beyond the coverage of other node, node 3 therefore lose with node 2 between be connected.At this moment, the R in the node 3
AAnd R
BTo attempt seeking and be connected with other first kind node.Because in the network system first kind node only being arranged is node 1, and node 1 has only an attachable R who is in access point mode
B, so the R of node 3
BTo disconnect by force and being connected of node 4, then pass through R
BBe connected with node 1.After node 4 is disconnected by force, the R of node 4
AAnd R
BWill seek to obtain and be connected with other first kind node.The R of node 4
AWill find the R of node 3
ABe in attachable access point mode, the R of node 4
AAnd then with the R of node 3
AConnect.Like this, node 4 has just rebulid by node 3 with node 1 and has been connected, as shown in Figure 6.
Different with existing network system and connected mode, in the Radio Network System of the present invention, each removable node all comprises first and second radio device at least, and first and second radio device uses first and second less radio-frequency channel respectively.By carrying out aforementioned method of attachment, can allow the part or all of node motion in the wireless network, thereby realize the dynamic reorganization of based on wireless mesh network, it is unimpeded to guarantee that simultaneously network connects.System compares with existing network, the present invention has avoided complicated algorithm and less radio-frequency channel to switch, and the structure of whole network system is simple relatively, the wireless channel that takies is less, system's antijamming capability is strong, can effectively reduce the defectives such as co-channel interference, multi-user conflict and packet loss mistake of network operation process.
Claims (12)
1. Radio Network System, it is characterized in that, described Radio Network System includes a plurality of removable nodes, each removable node includes one first radio device and one second radio device at least, wherein first radio device uses the first less radio-frequency channel, second radio device uses the second less radio-frequency channel, first radio device in each removable node and second radio device can be selected one respectively and dynamically adjust in client's pattern and access point mode, and first in the same removable node, two radio devices are in different mode respectively, each removable node is to utilize its first radio device that is in client's pattern or second radio device, realizes being connected with first radio device that is in access point mode in its upstream node or second radio device.
2. Radio Network System as claimed in claim 1, it is characterized in that, described network system also includes stationary nodes, and described stationary nodes is connected to cable network by wired mode, includes one first radio device or one second radio device in each stationary nodes at least.
3. Radio Network System as claimed in claim 1, it is characterized in that, the described first less radio-frequency channel is set to the channel 1 among the IEEE 802.11g, the second less radio-frequency channel is set to the channel 11 among the 802.11g, is connected by the 802.11g agreement between the node of wireless network and the node.
4. Radio Network System as claimed in claim 1, it is characterized in that, described first radio device and second radio device can be respectively selected one and are dynamically adjusted in client's pattern of the access point mode of IEEE 802.11g agreement and 802.11g agreement, and first and second radio device in the same node is in different mode respectively.
5. Radio Network System as claimed in claim 2 is characterized in that, the radio device in the described stationary nodes is in the access point mode in the IEEE 802.11g agreement all the time.
6. the method for attachment of a wireless network, it is characterized in that, described method comprises: provide at least one first radio device and one second radio device to each the removable node in the described wireless network, and set first radio device and use the first less radio-frequency channel, second radio device uses the second less radio-frequency channel, described first and second radio device can be selected one respectively and dynamically adjust in client's pattern and access point mode, and first and second radio device in the same node is in different mode respectively;
Each removable node utilizes its first or two radio devices that are in client's pattern to detect to confirm whether to exist the first kind link that is connected with upstream node;
If the first kind link of a certain node does not exist, then this node utilizes its first radio device that the first less radio-frequency channel is scanned, and utilizes second radio device that the second less radio-frequency channel is scanned;
If first radio device of described node is found attachable upstream node, then its first radio device is adjusted into client's pattern, and is connected with upstream node at the first less radio-frequency channel by described first radio device; If second radio device of described node is found attachable upstream node, then its second radio device is adjusted into client's pattern, and is connected with upstream node at the second less radio-frequency channel by its second radio device.
7. the method for attachment of wireless network as claimed in claim 6, it is characterized in that described detecting process is that the first energising owing to network node starts, causes because of go out wireless coverage or radio frequency obstacle that radio signal disappears, serious interference conflict, relatively poor service quality (QoS), serious packets of information postpone, nothing (or low) data throughput triggers software control or connection failure starts.
8. the method for attachment of wireless network as claimed in claim 6, it is characterized in that, first and second radio device is collected the relevant information of available upstream node in the described scanning process, comprises signal strength signal intensity, signal to noise ratio, upstream node characteristic, cipher mode, current communication condition indicating device etc.
9. the method for attachment of wireless network as claimed in claim 6, it is characterized in that, in the described discovery procedure, if second radio device of this node of detecting process is in client's pattern, when first radio device is found attachable upstream node, this node waited for earlier whether second radio device also finds attachable upstream node before first radio device is adjusted into client's pattern.
10. the method for attachment of wireless network as claimed in claim 9, it is characterized in that, in the described discovery procedure, if second radio device is also found attachable upstream node, then this node keeps its second radio device to be client's pattern, thereby still connects by the second less radio-frequency channel and upstream node.
11. the method for attachment of wireless network as claimed in claim 6 is characterized in that, when the node motion in the wireless network, each node all carry out described based on wireless mesh network method of attachment so that each node can reconnect automatically.
12. the method for attachment of wireless network as claimed in claim 6, it is characterized in that, when the node in the network broke down, opens circuit or shifts out wireless coverage, each node was all carried out described method of attachment so that each node in the network can reconnect automatically.
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| CNA200710019966XA CN101237682A (en) | 2007-02-01 | 2007-02-01 | Wireless network system and its connection method |
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| CNA200710019966XA CN101237682A (en) | 2007-02-01 | 2007-02-01 | Wireless network system and its connection method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103096509A (en) * | 2011-10-28 | 2013-05-08 | 林柏杰 | Relay device for forming wireless mesh network |
| CN103813472A (en) * | 2012-11-01 | 2014-05-21 | 三星电子株式会社 | System and method of connceting devices via wi-fi network |
| WO2014161138A1 (en) * | 2013-04-01 | 2014-10-09 | Nokia Corporation | A method and apparatus for diverse security handling in an enhanced local area network |
-
2007
- 2007-02-01 CN CNA200710019966XA patent/CN101237682A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103096509A (en) * | 2011-10-28 | 2013-05-08 | 林柏杰 | Relay device for forming wireless mesh network |
| CN103813472A (en) * | 2012-11-01 | 2014-05-21 | 三星电子株式会社 | System and method of connceting devices via wi-fi network |
| US10111266B2 (en) | 2012-11-01 | 2018-10-23 | Samsung Electronics Co., Ltd. | System and method of connecting devices via Wi-Fi network |
| CN103813472B (en) * | 2012-11-01 | 2018-10-23 | 三星电子株式会社 | The system and method for connecting equipment by Wi-Fi network |
| US11357061B2 (en) | 2012-11-01 | 2022-06-07 | Samsung Electronics Co., Ltd. | System and method of connecting devices via Wi-Fi network |
| US11523447B2 (en) | 2012-11-01 | 2022-12-06 | Samsung Electronics Co., Ltd. | System and method of connecting devices via Wi-Fi network |
| US11818779B2 (en) | 2012-11-01 | 2023-11-14 | Samsung Electronics Co., Ltd. | System and method of connecting devices via Wi-Fi network |
| WO2014161138A1 (en) * | 2013-04-01 | 2014-10-09 | Nokia Corporation | A method and apparatus for diverse security handling in an enhanced local area network |
| US9781080B2 (en) | 2013-04-01 | 2017-10-03 | Nokia Technologies Oy | Method and apparatus for diverse security handling in an enhanced local area network |
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Open date: 20080806 |