CN101047582B - Method for setting communication link in radio coordinate network - Google Patents
Method for setting communication link in radio coordinate network Download PDFInfo
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- CN101047582B CN101047582B CN2006100670704A CN200610067070A CN101047582B CN 101047582 B CN101047582 B CN 101047582B CN 2006100670704 A CN2006100670704 A CN 2006100670704A CN 200610067070 A CN200610067070 A CN 200610067070A CN 101047582 B CN101047582 B CN 101047582B
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Abstract
A method for setting up communication link in radio reciprocal network includes sending out connection request message by source reciprocal node, retransmitting said message by reciprocal node in accordance with retransmission condition if said message can not be arrived directly to object reciprocal node, sending connection feedback message by object reciprocal node after said request message is arrived on object reciprocal node, feeding back said feedback message to source reciprocal node along path of said request message to object reciprocal node for setting up communication link between two said reciprocal nodes.
Description
Technical field
The present invention relates to wireless peer-to-peer network, particularly relate to a kind of method of in wireless peer-to-peer network, setting up communication link.
Background technology
Generally speaking, network is divided into client/server (Client-Server) network from framework and is connected two kinds on network (Peer-to-Peer) with equity.So-called equity connects network, is meant in network there is not the differentiation of center, principal and subordinate or grade between the equipment, and the status of each node in network all is reciprocity.Each node had both served as server, for other nodes provide service, also enjoyed the service that other nodes provide simultaneously.Network condition, functions of the equipments and security clearance are only depended in communication on the network between the equipment.Equipment on the peer-to-peer network also is known as peer node (Peer).Do not need to register to some equipment based on the equipment on the peer-to-peer network, the communication of equipment room and service call thereof be not also by miscellaneous equipment intermediary.
The difference of the network that the network that equity connects is connected with centralized control is not have some equipment on the equity connection network, and miscellaneous equipment need be registered to it, and the communication of equipment room also needs the scheduling by it.On peer-to-peer network, each peer node can be applied for service and the resource that other peer node provides, and also can become the supplier of other peer node application service and resource.
The network that the network that equity connects is connected with centralized control is compared, and has many superiority.On the network that centralized control connects, can be because the fault of master controller causes the paralysis of whole network.Under the network environment that equity connects, any equipment on the network breaks down and can not cause great harm to network, and problem only can occur in the part.Therefore, the network of equity connection has unrivaled superiority aspect the robustness of system.In addition, the random connection of peer-to-peer network is also for to build an interim network environment, provides quick and means easily.
Corresponding with two kinds of above-mentioned network architectures, WLAN (wireless local area network) also has two kinds of network architectures: peer-to-peer network and structured network.
(Access Point, AP), wireless stations and distributed system (DSS) constitute, primary service area (BSS) and expansion service district (ESS) are divided in the zone of covering to structured network by radio access point.Radio access point is used for reception between wireless stations and other networks, buffer memory and forwarding data.Radio access point can cover tens to a hundreds of user, and covering radius reaches rice up to a hundred.
Primary service area is made of a radio access point and the wireless stations related with it, and at any time, any wireless stations is all related with this radio access point.In other words, the microcellulor zone that radio access point covered is exactly a primary service area.The primary service area indications (BSSID) of the related employing with radio access point of wireless stations AP, in 802.11, BSSID is the MAC Address of AP.
The expansion service district is meant by a plurality of AP and connects the structured network that their distributed system is formed that the essential same expansion service district indications (ESSID) of sharing of all AP also be we can say among the expansion service district ESS to comprise a plurality of BSS.
In the wireless topology network, adopt radio access point or router to enlarge the coverage of network usually, be several networking modes of wireless topology network below.
In the enterprise-level application environment, often adopt a plurality of radio access points to cover the networking mode in the big zone of a slice.In order to accomplish the seamless roam of client in this panel region, the coverage of the radio access point that each is adjacent all needs to a certain degree overlapping.If the radio signal channel in the overlapping region is also overlapping, will certainly cause conflict, have influence on network transmission speed, therefore, the common employing of the adjacent radio access point not method of overlapping channel avoids interference.
Another networking mode is that the radio access point of each primary service area is connected with cable network, by cable network a plurality of primary service areas is connected into an expansion service district.
Also having a kind of networking mode is to utilize a pair of radio access point to connect two WLAN (wireless local area network) network segments; Or utilize wireless repeater in the middle of communication path, to transmit data, thereby the networking mode of the coverage of stretch system.
Wireless peer-to-peer network also claims the Ad-hoc network, and the service area that it covers is called as the independent basic service district.Peer-to-peer network is used for a wireless stations and the direct communication of other one or more other wireless stations.In wireless peer-to-peer network, must there be the electromagnetism of minimum intensity to cover between two peer node, can couple together.Therefore peer-to-peer network can only be used for the network environment of a few users, and such as 4 to 8 users, and they are enough near from getting.
Because wireless network adopts electromagnetic wave as carrier, electromagnetic wave can pass ceiling, glass, and floor, brick, objects such as wall, but electromagnetic intensity can be attenuated by after these obstacles simultaneously.The decay of this electromagnetic intensity, the electromagnetism that may cause losing minimum intensity between two peer node covers, thereby loses connection.
In the situation that Fig. 1 the first half shows be: equipment B, C be in the range of transmission in device A because stopping of building walls causes signal attenuation, cause equipment C can't with direct point-to-point connection of device A; The second kind of situation that shows in Fig. 1 the latter half is: the coverage of device A can only reach equipment B, but can not arrive equipment C, the coverage of same equipment C can only arrive equipment B, can not arrive device A, in the case, can't realize direct point-to-point connection of device A and equipment C.
Connect network for existing wireless equity, under two kinds of situations shown in Figure 1, if finish being connected of device A and C, need the peer node in the wireless peer-to-peer network to support routing function.If the peer node in the network is not supported routing function, then device A can't be finished with C and be connected.Simultaneously, though support the wireless peer-to-peer network of routing function can realize being connected of device A and equipment C, whole connection procedure is independently to finish by the peer node in the network, can't be to higher requirements of proposition such as safety of transmission.In the prior art, between two peer node of wireless peer-to-peer network, do not set up the method for communication link.
Therefore, need provide a kind of method of between two nodes, setting up communication link for wireless peer-to-peer network, this method not only can connect between two nodes that do not have direct electromagnetic wave to cover (no matter whether the peer node in this wireless peer-to-peer network supports routing function), and can improve safety of transmission by this communication link communication.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide a kind of method of in wireless peer-to-peer network, setting up communication link, by this method, not only can between two nodes that do not have direct electromagnetic wave to cover, connect, and can improve safety of transmission by this communication link communication.
The objective of the invention is to be achieved through the following technical solutions: the invention provides the method for setting up communication link between two peer node of a kind of wireless peer-to-peer network, may further comprise the steps: connection request message is created and sent to A, source peer node, if the connection request message that the source peer node sends can not directly arrive the target peer node, the peer node that then meets the forwarding condition is transmitted this message after receiving after the connection request message and preserving this connection request message as the relaying peer node, arrives the target peer node up to this message; After B, target peer node are received connection request message, create with sending and be connected feedback message, and arrive the path of target peer node according to connection request message, turn back to the source peer node, set up communication link between source peer node and target peer node, wherein, described connection request message comprises group identity information with described the connection in the feedback message, peer node is only handled and the message that self has identical group id, and the group id difference is end process then; The source peer node is set up one and is connected the feedback message formation, when receiving the connection feedback message of target peer node, all qualified connection feedback messages of being received all are stored in the formation of connection feedback message, and according to predetermined condition, therefrom select a target equity peer node, and then the connection feedback message that will choose is kept in the request message formation.
The source peer node is in the request message that connects, be provided with and connect the timestamp that finishes, this timestamp is duplicated in the connection request message of the forwarding of relaying peer node, current time is in case surpass the acquiescence connect hours, the source peer node will no longer receive the connection feedback message, simultaneously, each peer node will discharge the resource relevant with this connection request.
Described steps A comprises: connection request message is created and sent to A1, source peer node; A2, receive the peer node of connection request message judges it self is target peer node or relaying peer node, if the target peer node then continues step B, if connection request message is then created and transmitted to the relaying peer node.Described step B comprises: B1, target peer node are created with sending and are connected feedback message, the sign of the peer node of this message of designated treatment in message; B2, peer node judge whether the connection feedback message accepting to receive, if then preserve this message; If the relaying peer node, then create and send the connection feedback message, and in message the sign of the peer node of this message of designated treatment, if the source peer node, process ends.Compared with prior art, beneficial effect of the present invention is: by the foundation of the communication link between two peer node, can avoid because the signal dead angle that factors such as barrier, network decay cause, increase UNICOM's performance of whole network, and can improve safety of transmission by this communication link.
Description of drawings
Figure 1 shows that the schematic diagram that utilizes existing techniques in realizing to connect the situation that has difficulties in the wireless peer-to-peer network;
Figure 2 shows that source of the present invention peer node sends the flow chart of connection request message;
Figure 3 shows that the present invention judges that the target peer node still is the flow chart of relaying peer node;
Figure 4 shows that relaying peer node of the present invention is preserved and the flow chart of forwarding connection request message;
Figure 5 shows that target peer node preservation connection request message of the present invention and send the flow chart that is connected feedback message;
Figure 6 shows that the present invention judges whether to preserve the flow chart that connects feedback message;
Figure 7 shows that relaying peer node preservation of the present invention and transmit the flow chart that is connected feedback message.
Embodiment
In specific embodiment described later, use notion as giving a definition:
When peer node is initiated connection request, this peer node be called as the source peer node (SourcePeer, SP); Receive connection request, and meet the peer node of connection request condition, be called as the target peer node (Destination Peer, DP); Receive connection request, do not meet the connection request condition, can be called as the peer node that middle bridge is transmitted connection request message the relaying peer node (RelayPeer, RP).
Group id (Group ID) is an identification code in the peer-to-peer network, and the equipment of holding identical group id is considered to can UNICOM, and this group id can be by manual or distribute automatically and obtain.
Peer node sign (Peer ID) is the identifier of peer node, and peer node IP (Peer IP) is the network address of peer node.
Core concept of the present invention is, if the connection request message that the source peer node sends can not directly arrive the target peer node, the peer node that then meets the forwarding condition is transmitted this message after receiving after the connection request message and preserving this connection request message as the relaying peer node, arrive the target peer node up to this message, the target peer node sends the connection feedback message subsequently, the peer node that meets the forwarding condition is received to connect behind the feedback message as the relaying peer node and is preserved this message of forwarding behind this connections feedback message, up to the path of this message, turn back to the source peer node along connection request message arrival target peer node; If the johning knot request message that the source peer node sends directly arrives the target peer node, then the connection feedback message of target peer node transmission directly turns back to the source peer node, thereby sets up a communication link directly or indirectly between source peer node and target peer node.
The content of above-mentioned connection request message comprises: type of message, and the message sequence number, the identification information of requested service or target peer node generates the IP of this connection request message peer node; In addition,, can further include the content relevant,, generate the ID of the peer node of this connection request message as group id with safety verification in order to improve fail safe.Wherein the identification information of target peer node is meant the ID of target peer node or IP etc.
The content of above-mentioned connection feedback message comprises: type of message, and the message sequence number generates IP that connects the feedback message peer node and the IP that needs to receive the peer node of handling this message; In addition,, can further include the content relevant,, generate the ID of this message peer node as group id with safety verification for safety of transmission, and the identification information of service that provides or destination node.
The message sequence number is produced by the source peer node, has uniqueness, and the connection request forwards and connect the generation of feedback message and repeating process in duplicated, be used for distinguishing different connection request message and being connected feedback message.A kind of mode that generates the message sequence number is: the IP+ sequence number, keep the uniqueness of message sequence number by this generating mode, for example in IPv4, IP be by 4 bytes totally 32 numeric string form.Such as: 129.45.8.22, can become 12945822, then the message sequence number can be a value in 12945822000 to 12945822999.
For the present invention there being further understanding, method of the present invention is described in detail below in conjunction with accompanying drawing.
The method of the invention may further comprise the steps:
Connection request message is created and sent to step 11, source peer node.
As shown in Figure 2, the source peer node is created connection request message, generate the message sequence number, the message sequence number is filled in the message, the type of message is made as connection request message, and in connection request message, insert the identification information of requested service or target peer node, IP of self and ID, group id; Then, in the request message formation of source peer node, preserve this connection request message, send connection request message then.
Step 12 receives that the peer node of connection request message judges that from the target peer node as this connection request message still be the relaying peer node.
After peer node is received connection request message, the information that comprises in the information of self and this connection request message is compared, judge that from the target peer node as this connection request message still be the relaying peer node, as shown in Figure 3, concrete steps comprise:
Peer node is checked the type of message of this message, is defined as connection request message;
The group id of peer node check self whether with this message in group id be consistent, if do not meet, illustrate that then this peer node does not meet the connectivity requirement that this connection request message requires, then receive the processing of the peer node end of connection request message this message; If meet, then continue.
Peer node judges whether to handle identical connection request message.The method that realizes this judgement has multiple, a kind of method that realizes is, check in the request message formation and whether have connection request message with identical message sequence number, if exist, illustrate that then this peer node handled this connection request message, can not this message of reprocessing, at this moment, the peer node of receiving connection request message finishes the processing to this message; If there is no, still untreated this connection request message of this peer node is described then, the step below continuing.
Also have a kind of method that realizes to be, each peer node is safeguarded a request message mark queue, after connection request message of treated with same, then in this request message mark queue, preserve can this connection request message of unique identification mark, for example the message sequence number of this message be used for showing connection request message with one or is connected feedback message.When receiving connection request message, check the mark that whether has this connection request message in this message marking formation, if exist, illustrate that then this peer node handled this connection request message, can not this message of reprocessing, at this moment, receive the processing of the peer node end of connection request message to this message; If there is no, still untreated this connection request message of this peer node is described then, the step below continuing.
The requested service that peer node comprises this message or the identification information of target peer node and the service or the identification information that self provide are compared, and judge whether the two meets.If meet, illustrate that this peer node is exactly the node of this connection request message request, is the target peer node, continue execution in step 14, otherwise this peer node can be used as the relaying peer node, continues to carry out the step 13 that connection request message was preserved and transmitted to the relaying peer node;
In above-mentioned steps, the order of the judgement that whether meets to the judgement of connection request message digit with to group id can be exchanged, and does not influence the result of execution.
Connection request message is preserved and transmitted to step 13, relaying peer node.
As shown in Figure 4, the relaying peer node is preserved the connection request message of receiving in the request message formation, set up relaying connection request message then, the message sequence number in the connection request message of preserving, type of message, group id, the identification information of requested service or target peer node copy in the relaying connection request message, and insert self IP and ID, send connection request message then.If peer node has also been safeguarded the request message mark queue, then in mark queue, write down the mark of this connection request message.
Step 14, target peer node are preserved the connection request message of receiving and are connected feedback message with sending.
As shown in Figure 5, the target peer node is preserved the connection request message of receiving in the request message formation, feedback message then connects, type of message is made as the connection feedback message, in connecting feedback message, insert group id, the IP of self and ID, service that provides or the identification information of self, and the IP of the message sequence number that comprises in the connection request message and peer node is filled into is connected in the feedback message, the peer node with this IP is exactly the peer node that needs to handle this connection feedback message; In the request message formation, preserve this and connect feedback message, send this connection feedback message then.If peer node has also been safeguarded the request message mark queue, then in mark queue, write down above-mentioned connection request message and the mark that is connected feedback message.
Step 15 receives that the peer node that connects feedback message judges whether the peer node into this message of designated treatment.
After peer node is received and is connected feedback message, owing to connect the IP that has specified the peer node that needs this message of processing in the feedback message,, judge whether peer node into this message of processing of appointment so can compare by IP with self, concrete steps comprise as shown in Figure 6:
The type of message in the message is received in the peer node inspection, is defined as connecting feedback message;
The group id of peer node check self whether with this message in group id be consistent, if do not meet then the connectivity that does not meet this connection feedback message requirement be described, receive that then the peer node that connects feedback message finishes the processing to this message, if meet then continue;
Peer node judges whether to handle identical connection request message, if it is still untreated, illustrate that then this peer node do not transmit connection request message as yet, it just can not the destination node that connects feedback message yet, receive that then the peer node that connects feedback message finishes the processing to this message, if handled, then continue to carry out following judgement.The method that realizes can be to check the connection request message that whether has the identical message sequence number in the request message formation, perhaps under the situation of peer node maintenance request message marking formation, checks the mark that whether has this connection request message.
Peer node judges whether to handle identical connection feedback message, if handled, illustrate that then this peer node transmitted the connection feedback message, can not reprocessing should connect feedback message, at this moment, receive that the peer node that connects feedback message finishes the processing to this message; If do not handle, then continue.The method that realizes can be to check the connection feedback message that whether has the identical message sequence number in the request message formation, perhaps under the situation of peer node maintenance request message marking formation, checks the mark that whether has this connection feedback message.
The IP of peer node check self whether with this message in the IP that asks be consistent, if do not meet then illustrate that this peer node is not the peer node of this message of designated treatment of this connection feedback message, receive that then the peer node that connects feedback message finishes the processing to this message; If meet then continue execution in step 16.
In above-mentioned steps, the order of the judgement that whether meets to connection request message digit and the judgement that is connected the feedback message position and to group id can be exchanged, and does not influence the result of execution.
Step 16, it self is relaying peer node or source peer node that peer node is judged.
Peer node judges whether the IP be kept at the corresponding connection request message in the request message formation is identical with the IP of self, if difference then be the relaying peer node continues execution in step 17, if identical then be the source peer node, continues execution in step 18.
The connection feedback message is preserved and transmitted to step 17, relaying peer node.
As shown in Figure 7, the connection request message correspondence position of relaying peer node in the request message trunk queue preserved this connection feedback message; Set up new connection feedback message, in connecting feedback message, insert the message sequence number of corresponding connection request message of preservation and the identification information of source peer node IP, requested service or target peer node, IP of self and ID, group id; Send and connect feedback message.If peer node has also been safeguarded the request message mark queue, then in mark queue, write down the mark that connects feedback message.
Step 18, source peer node are preserved and are connected feedback message.
The source peer node is preserved and is connected feedback message, finishes the foundation with the communication link of target peer node.If peer node has also been safeguarded the request message mark queue, then in mark queue, write down the mark that connects feedback message.
Description by as above as can be seen, peer node is when receiving connection request message and being connected feedback message, by inspection, can guarantee that the node of forming communication link all has the group id of appointment, thereby improve the fail safe and the reliability of communication link group id in the message; But, if when not needing to carry out the check of group id in the peer-to-peer network, in message, also can not add group identity information, in step, also omit check to group id, do not influence the foundation of communication link.Connection request message be connected feedback message in the ID item of peer node, when the peer node in peer-to-peer network does not need the ID checking, also can omit.
In above-mentioned steps, each peer node can be limited and connection request message and corresponding connection feedback message can only be received or send, then each peer node can only be safeguarded a communication link simultaneously.
When the source peer node after the link establishment of target peer node, when perhaps the source peer node needed in the releasing network corresponding resource, the source peer node then sent the cancellation connection message, inserts the message sequence number in the cancellation connection message; The peer node of receiving the cancellation connection message checks whether to exist in the message queue and connection request message that this cancellation connection message meets, if there is no, then finish, otherwise discharges relevant resource and connection message is cancelled in forwarding.
One embodiment of the present of invention are by in connection request message timestamp being set, the time of control connection.The source peer node is in the request message that connects, be provided with and connect the timestamp that finishes, this timestamp is duplicated in the connection request message of the forwarding of relaying peer node, current time is in case surpass the acquiescence connect hours, the source peer node will no longer receive the connection feedback message, simultaneously, each peer node will discharge the resource relevant with this connection request.
When source peer node requested service has a plurality of target peer node to provide, the source peer node can remove to select a preferred communication link according to the needs of oneself, for achieving this end, another one embodiment of the present invention is, the source peer node is set up one and is connected the feedback message formation, when receiving the connection feedback message of target peer node, will not connect feedback message immediately is kept in the request message formation, but all qualified connection feedback messages of being received all are stored in the formation of connection feedback message, and according to certain condition, therefrom select a preferred target equity peer node, and then the connection feedback message that will choose is kept in the request message formation.The condition of selecting can be the individual said conditions that target peer node and source peer node are set up the peer node of communication link process.
According to the abovementioned embodiments of the present invention, can also be after source peer node and target peer node be set up communication link, adopt special group id to the peer node on the link is interim, to improve the privacy of communication.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (11)
1. set up the method for communication link between two peer node of a wireless peer-to-peer network, this method may further comprise the steps:
Connection request message is created and sent to A, source peer node, if the connection request message that the source peer node sends can not directly arrive the target peer node, the peer node that then meets the forwarding condition is transmitted this message after receiving after the connection request message and preserving this connection request message as the relaying peer node, arrives the target peer node up to this message;
After B, target peer node are received connection request message, create with sending and is connected feedback message, and, turn back to the source peer node, between source peer node and target peer node, set up communication link according to the path of connection request message arrival target peer node;
Described connection request message comprises group identity information with described the connection in the feedback message, peer node is only handled and the message that self has identical group id, and the group id difference is end process then;
The source peer node is set up one and is connected the feedback message formation, when receiving the connection feedback message of target peer node, all qualified connection feedback messages of being received all are stored in the formation of connection feedback message, and according to predetermined condition, therefrom select a target peer node, and then the connection feedback message that will choose is kept in the request message formation.
2. in accordance with the method for claim 1, it is characterized in that,
The source peer node is in the request message that connects, be provided with and connect the timestamp that finishes, this timestamp is duplicated in the connection request message of the forwarding of relaying peer node, current time is in case surpass the acquiescence connect hours, the source peer node will no longer receive the connection feedback message, simultaneously, each peer node will discharge the resource relevant with this connection request.
3. in accordance with the method for claim 2, it is characterized in that described steps A comprises:
Connection request message is created and sent to A1, source peer node;
A2, receive the peer node of connection request message judges it self is target peer node or relaying peer node, if the target peer node then continues step B, if connection request message is then created and transmitted to the relaying peer node.
4. in accordance with the method for claim 2, it is characterized in that described step B comprises:
B1, target peer node are created with sending and are connected feedback message, the sign of the peer node of this message of designated treatment in message;
B2, peer node judge whether the connection feedback message accepting to receive, if then preserve this message; If the relaying peer node, then create and send the connection feedback message, and in message the sign of the peer node of this message of designated treatment, if the source peer node, process ends.
5. according to claim 1 or 2 or 3 described methods, it is characterized in that, peer node is provided with the connection request message marking and is connected the feedback message mark, after peer node is sent connection request message/connection feedback message, write down corresponding connection request message marking/connection feedback message mark, and identical connection request message/connection feedback message of receiving is subsequently disregarded.
6. according to claim 1 or 2 or 3 described methods, it is characterized in that, peer node checks in the request message formation whether have the connection request message/connection feedback message with identical message sequence number, if exist, then receive the processing of the peer node end of connection request message/connection feedback message to this message; If there is no, the peer node of then receiving connection request message/connection feedback message continues to handle.
7. according to claim 1 or 2 or 3 described methods, it is characterized in that, comprise timestamp in the connection request message, if can't set up communication link in official hour, the peer node of then preserving this connection request message discharges related resource.
8. according to claim 1 or 2 or 3 described methods, it is characterized in that the connection feedback message of a plurality of target peer node is preserved in the peer node feedback message formation that connects in source.
9. in accordance with the method for claim 8, it is characterized in that the source peer node is selected to connect and arrived the minimum link establishment communication link of target peer node node in the feedback message formation.
10. according to claim 1 or 2 or 3 described methods, it is characterized in that, after the communication link between source peer node and target peer node is set up, the group id of all peer node on the link is changed to predetermined group id.
11. according to claim 1 or 2 or 3 described methods, it is characterized in that, after step B, further comprise:
C, source peer node send the cancellation connection message, receive that the peer node of cancellation connection message judges whether to meet the requirement of cancelling connection message, if, then discharge related resource and transmit this message, if not, then finish.
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| CN109274738B (en) * | 2018-09-14 | 2021-12-07 | 百度在线网络技术（北京）有限公司 | Control method and device for block production node |
| CN110855627B (en) * | 2019-01-16 | 2021-04-09 | 星环信息科技(上海)股份有限公司 | Application deployment method, device, equipment and medium |
| CN111225037A (en) * | 2019-12-20 | 2020-06-02 | 语联网（武汉）信息技术有限公司 | Term corpus sharing method, terminal and server |
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| CN1561509A (en) * | 2001-08-03 | 2005-01-05 | 霍尼韦尔国际公司 | Energy aware network management |
| CN1672446A (en) * | 2002-06-24 | 2005-09-21 | 诺基亚公司 | Mobile mesh AD-HOC networking |
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| CN1561509A (en) * | 2001-08-03 | 2005-01-05 | 霍尼韦尔国际公司 | Energy aware network management |
| CN1672446A (en) * | 2002-06-24 | 2005-09-21 | 诺基亚公司 | Mobile mesh AD-HOC networking |
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