WO2012155410A1 - 多接口终端邻居拓扑发现、协作通信方法和多接口终端 - Google Patents

多接口终端邻居拓扑发现、协作通信方法和多接口终端 Download PDF

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Publication number
WO2012155410A1
WO2012155410A1 PCT/CN2011/079223 CN2011079223W WO2012155410A1 WO 2012155410 A1 WO2012155410 A1 WO 2012155410A1 CN 2011079223 W CN2011079223 W CN 2011079223W WO 2012155410 A1 WO2012155410 A1 WO 2012155410A1
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WIPO (PCT)
Prior art keywords
interface
terminal
request message
network
neighbor
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PCT/CN2011/079223
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English (en)
French (fr)
Inventor
孙爱芳
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中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to JP2014510641A priority Critical patent/JP5727670B2/ja
Priority to EP11865495.3A priority patent/EP2698950B1/en
Priority to US14/117,672 priority patent/US9445355B2/en
Publication of WO2012155410A1 publication Critical patent/WO2012155410A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/02—Topology update or discovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/02—Topology update or discovery
    • H04L45/03—Topology update or discovery by updating link state protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H04W40/246—Connectivity information discovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • Multi-interface terminal neighbor topology discovery cooperative communication method and multi-interface terminal
  • the present invention relates to the field of wireless communication technologies, and in particular, to a multi-interface terminal neighbor topology discovery, a cooperative communication method, and a multi-interface terminal.
  • the technical problem to be solved by the present invention is to provide a multi-interface terminal neighbor topology discovery method, a cooperative communication method, and a multi-interface terminal, thereby improving the multi-interface usage rate.
  • the present invention provides a multi-interface terminal neighbor topology discovery method, which includes: after a multi-interface terminal joins a network, broadcasts a neighbor discovery request message to each network through each interface, where the neighbor discovery request message is carried.
  • the neighbor hop value; and the multi-interface terminal in the network listens to the broadcast message of other terminals of the network where the interfaces are located, and listens to the neighbor discovery request message, if the neighbor information carried in the neighbor discovery request message is heard If the hop value indicates that the terminal is the last hop, extract the related information in the neighbor discovery request message, and update the neighbor information and network topology information of the local terminal; if not, modify the neighbor hop count After the value is forwarded, the neighbor discovery request message is forwarded through all the interfaces, and the related information in the neighbor discovery request message is extracted, and the neighbor information and the network topology information of the terminal are updated.
  • the foregoing method may further have the following feature: the multi-interface terminal broadcasts the neighbor discovery request message to the respective network through the interfaces: the multi-interface terminal periodically broadcasts a neighbor discovery request message to the respective network through each interface;
  • the multi-interface terminal in the network that listens to the broadcast messages of other terminals on the network where the interfaces are located includes: the multi-interface terminal in the network periodically listens for broadcast messages of other terminals in the network where each interface is located; The time of the broadcast message is less than the time of the periodic broadcast neighbor discovery request message.
  • the foregoing method may further have the following feature: the multi-interface terminal collects statistics on the broadcast messages received by the interfaces, and if the network in which the internal interface is located in the specified time network does not receive the broadcast message of the other terminal, The multi-interface terminal shuts down the interface or goes to sleep, and periodically wakes up the interface.
  • the present invention also provides a multi-interface terminal cooperative communication method. After the multi-interface terminal acquires the network topology information, the method further includes: when the multi-interface terminal needs to request a service, acquiring an effective communication link to the destination end according to the network topology information.
  • the service offload mode between the effective communication links is determined; the multi-interface terminal requests the service and the parallel transmission through each interface corresponding to each valid communication link according to the service offload mode.
  • the foregoing method may further have the following feature: the determining a service offload mode between the active communication links includes: performing link information according to the effective communication link, service information of the requested service, and each communication chain. Evaluate one or any combination of the interface information of each interface corresponding to the road, according to the evaluation The result of the evaluation determines the manner in which the business is offloaded.
  • the foregoing method may also have the following feature:
  • the effective communication link to the destination end is not obtained according to the network topology information
  • the effective communication link is obtained by:
  • the interface terminal broadcasts a link relay request message carrying the destination end to the respective networks through the interfaces.
  • the peripheral terminal receives the link relay request message, it determines whether the destination end in the link relay request message is itself. If not, forwarding the link relay request message through all of its interfaces; if yes, returning the link relay response message through the original path to the multi-interface terminal transmitting the link relay request message; transmitting the link relay response After receiving the link relay response message, the multi-interface terminal of the message establishes an effective communication link with the destination end.
  • the present invention also provides a multi-interface terminal, where the multi-interface terminal includes a network layer and at least two different interfaces, and further includes a multi-interface adaptation layer, where the multi-interface adaptation layer includes a network topology module and an interface management module.
  • the network topology module is configured to: after the multi-interface terminal joins the network, send a neighbor discovery request message to each interface, where the neighbor discovery request message carries a neighbor hop value; and, receiving the interface forwarding After the neighbor discovery request message, extract the related information in the neighbor discovery request message, and update the neighbor information and the network topology information; the interface management module is configured to: control and manage the interface; After receiving the neighbor discovery request message, broadcast the neighbor discovery request message to the network, and listen to the broadcast message of other terminals on the network where the interface is located, and listen to the neighbor discovery request message if the neighbor If the neighbor hop value carried in the request message indicates that the terminal is the last hop, the neighbor is Discovery request message to the network topology module, the discovery request message, if not, the neighbor discovery request message to the network topology module, modifying the number of hops to forward the neighbor neighbor via all interfaces.
  • the multi-interface terminal further has the following features.
  • the network topology module is configured to: periodically send a neighbor discovery request command to each interface of the
  • the interface is configured to: periodically broadcast the broadcast message of the other terminal in the network where the interface is located, where the time for periodically listening to the broadcast message is less than the time of the periodic broadcast neighbor discovery request message.
  • the multi-interface terminal may further have the following features:
  • the interface management module is further configured to: collect statistics on broadcast messages received by the interfaces, if no broadcast messages of other terminals are received in the network where the interface is located within a specified time. , the interface is closed, or the interface is put to sleep and periodically wakes up.
  • the multi-interface terminal may further have the following feature
  • the multi-interface adaptation layer further includes a collaborative control module, where the collaborative control module is configured to: when receiving the service request command of the network layer, according to the The network topology information maintained by the network topology module acquires an effective communication link to the destination end; when the effective communication link is greater than one, the service offload mode between the effective communication links is determined and sent to the interface management module;
  • the interface management module is further configured to: control each interface corresponding to each valid communication link to perform a request service and transmit the service in parallel according to the service offload mode.
  • the multi-interface terminal may further have the following features: the cooperative control module is configured to: according to link information of each valid communication link, service information of the requested service, and each interface corresponding to each communication link The one or any combination of the interface information is evaluated, and the service shunting manner is determined according to the evaluation result.
  • the cooperative control module is configured to: according to link information of each valid communication link, service information of the requested service, and each interface corresponding to each communication link The one or any combination of the interface information is evaluated, and the service shunting manner is determined according to the evaluation result.
  • the multi-interface terminal may further have the following feature: the network topology module is further configured to: after receiving the service request command of the network layer, failing to obtain valid communication to the destination end according to the network topology information When the link is sent, the link relay request command carrying the destination end is sent to each interface;
  • the interface is further configured to: after receiving the link relay request command, respectively broadcast a link relay request message carrying the destination end to the respective network; and receiving the link relay response message returned by the destination end
  • the coordinated control module is further configured to: after receiving the link relay response message forwarded by the interface, establishing an effective communication link with the destination end.
  • the multi-interface terminal may further have the following feature: the interface is further configured to: determine, when receiving a link relay request message sent by another terminal, whether the destination terminal in the link relay request message is itself, if If not, the link relay request message is forwarded to the interface management module; if yes, the link relay request message is sent to the network topology module; the interface management module is further configured to: receive the interface When the link relay request message is forwarded, the interface of the multi-interface terminal is forwarded to the link relay request message; the network topology module is further configured to: when receiving the link relay request message, The network topology information is updated, and each interface is instructed to return a link relay response message through the original path to the source multi-interface terminal that initiates the link relay request.
  • the above-mentioned multi-interface terminal shields the heterogeneous and interface differences of the network in the communication process, and fully utilizes the advantages of its multiple interfaces to effectively improve the communication efficiency through the cooperative communication multi-interface parallel transmission, and forms a multi-hopping force by using different interfaces. Transmission effectively expands the reachability of the terminal and the coverage of the network.
  • FIG. 1 is a schematic structural diagram of a multi-interface terminal according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a neighbor terminal topology discovery method according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a multi-terminal cooperative communication in an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of establishing a multi-hop connection between heterogeneous terminals through a multi-interface terminal according to an embodiment of the present invention. Preferred embodiment of the invention
  • the present embodiment provides a multi-interface terminal, where the multi-interface terminal includes, but is not limited to, a communication terminal, and has at least two interfaces, and can access different wireless networks, such as WLAN, through multiple wireless interface modes. , Internet, WIMAX, ZigBee, etc.
  • the multi-interface terminal in this embodiment is different from the traditional wireless router and the existing multi-interface implementation manner, and the multiple interfaces carried by the multi-interface terminal can access multiple modes of heterogeneous networks, thereby implementing heterogeneous terminals. Interconnection.
  • the multi-interface terminal can implement the diversification and dissimilarity of the upper layer network shielding interface by adding a multi-interface adaptation layer between the MAC layer and the IP (network) layer, and provide various high-level application services to the interface.
  • the present embodiment provides a method for discovering a peripheral terminal, that is, a neighbor terminal topology discovery, by using the foregoing multi-interface terminal, including the following steps:
  • the multi-interface adaptation layer After the multi-interface terminal joins the network, the multi-interface adaptation layer periodically sends a neighbor discovery request message to each interface.
  • the interface corresponding to each interface mode receives the message and encapsulates the message.
  • the wireless interface transmits the message to the wireless channel of the network where the broadcast message includes the hop value of the broadcast message, and the size of the neighbor hop value is determined by the network size of the topology.
  • the multiple interfaces also detect through each interface. Listen to broadcast messages from other terminals on the channel. If the interface receives the neighbor discovery request message, the neighbor hop value in the neighbor discovery request message is extracted. If the neighbor hop value indicates that the current terminal is the last hop, the neighbor discovery request message is sent to the multiple interface.
  • the neighbor discovery request message is sent to the multi-interface adaptation layer, and the neighbor discovery request message is forwarded through all interfaces after the neighbor hop value is modified. Specifically, if the hop value is greater than 1, the hop value is decreased by 1 to the network topology module of the multi-interface adaptation layer, and the message is forwarded through each interface. If the hop value is not greater than 1, the neighbor is directly found. Request the message to be uploaded to the network topology module;
  • the network topology module of the multi-interface adaptation layer receives the neighbor discovery request message, extracts the useful information in the message, and updates the maintenance neighbor information and the network topology information;
  • an interface mode of a multi-interface terminal does not receive broadcast messages of any other terminal within a specified time, the interface mode is considered invalid, and the interface is shut down or put into a sleep state in order to reduce power consumption, and wakes up at intervals.
  • each terminal can reach the neighboring heterogeneous terminals through one-hop or multi-hop links, and truly realize the interconnection and intercommunication between heterogeneous terminals.
  • the embodiment further provides an efficient communication method for the collaborative peripheral terminal initiated by the user terminal to complete a certain communication service.
  • the service provider may be a terminal or a network service provider.
  • the specific method includes the following steps:
  • the user terminal service request command is delivered to the multi-interface adaptation layer, and the collaborative control module invokes the network topology information of the network topology module and finds an effective communication link to the destination end; the destination end provides a terminal or network for the service;
  • the link When the number of effective communication links is one, the link is directly established, and the service request and transmission are performed; when the effective communication link is greater than one, the cooperative control module is based on the link information of each valid communication link, the service information of the requested service, and One or a combination of the interface information of each interface corresponding to each communication link is evaluated, and the service offload mode is determined according to the evaluation result, and the service is requested by each interface corresponding to each valid communication link according to the service offload mode, and the service is transmitted in parallel.
  • the plurality of communication links described herein are related to the number of interfaces that the multi-interface terminal can communicate with, and each communication link corresponds to one interface.
  • the link information of each valid communication link includes: network delay, link bandwidth, congestion, and link energy consumption.
  • the interface information includes the interface priority, and the service information includes the service type.
  • FIG. 1 is a schematic structural diagram of a multi-interface terminal capable of implementing interconnection and intercommunication between heterogeneous terminals according to an embodiment of the present invention.
  • the multi-interface terminal includes a network layer 101, a multi-interface adaptation layer 102, and an interface 103.
  • the interface 103 includes a MAC layer and a physical layer, where the network layer 101 and the interface 103 are the same as the common terminal, and the interfaces are different. Network mode, so the lower layer of the network The network protocol is also different.
  • a multi-interface adaptation layer 102 is added between the network layer 101 and the interface 103 to complete functions such as resource management scheduling and protocol address translation.
  • the multi-interface adaptation layer 102 includes a collaborative control module 1021, a network topology module 1022, and an interface management module 1023, where:
  • the collaborative control module 1021 is the key to the cooperative communication and the distributed cooperative relay communication of the multi-interface terminal, and can analyze the network delay, the transmission link bandwidth, the congestion, the link energy consumption, the interface priority, the service type, and the like. Analyze the communication link stored by the network topology module, formulate a reasonable and efficient cooperative communication mode and select an interface, and release the control command and information to the interface management module 1023 to perform transmission;
  • the network topology module 1022 is mainly used to complete the storage update of the neighbor information and the network topology information in the neighbor discovery process, and store the interface information, the address, the location information, and the like of the neighboring neighboring terminals, and the logical topology and the physical topology of the network. Relationship between the relationship and the destination;
  • the interface management module 1023 is configured to control and manage multiple interfaces of the terminal, and can save power by shutting down the interface with low frequency of use, and maximize the power utilization by using the sleep wake-up mechanism without affecting the normal communication of the network.
  • the interface management module also stores an ARP (Address Resolution Protocol) table for storing the MAC address of the terminal in different interface modes, and converting the address to present a unified IP address to the user.
  • ARP Address Resolution Protocol
  • a method for discovering a neighbor terminal topology is provided by an embodiment of the present invention, where the method includes the following steps:
  • Step 201 The multi-interface terminal joins the network. Due to the existence of the multi-interface mode, the terminal may issue a join request with multiple networks in the area and complete the join process. At this time, the multi-interface terminal does not store the neighbor node information.
  • Step 202 After the network is successfully joined, the multi-interface adaptation layer of the multi-interface terminal periodically sends a neighbor discovery request message to the interface, where the neighbor discovery request message carries the neighbor hop value.
  • the reason why the neighbor discovery request message is periodically sent is that the terminal itself may be in a moving state, and the surrounding network and the node status are changing at the moment, even if the terminal moves.
  • the performance is low, and the surrounding nodes also join and exit the network from time to time.
  • the network topology location relationship is changing.
  • the period of the neighbor discovery request message can be adjusted according to the network changes.
  • the neighbor hop value is the network range that the neighbor discovery request message can cover, and one hop only covers the terminal that directly has a communication link with the terminal, and the multi-hop intermediate has experienced relay transmission of multiple relay terminals. The coverage is wider.
  • a small-area LAN requires only three to four hops to complete the connectivity of the entire network node.
  • Step 203 Each interface encapsulates the received neighbor discovery request message from the multi-interface adaptation layer, and broadcasts the radio channel of all interfaces to the network where each interface mode is located, and sets the timer timing detection. Listen to broadcast messages from other terminals in each interface channel.
  • the neighbor discovery request message is encapsulated into the requirements of the network transmission protocol where each interface is located, and can be transmitted in the respective network.
  • the set listening channel timing time is less than the periodic broadcast time, and the lost broadcast message is minimized.
  • Step 204 Once the interface detects the neighbor discovery request message, the unpacking extracts the neighbor hop value.
  • Step 205 Determine the neighbor hop value. If the neighbor hop value is 1 (representing that the current terminal is the last hop), the message is directly transmitted, and the process goes to step 207. Otherwise, the process goes to step 206.
  • Step 206 Since the hop value is not 1, the neighbor discovery request message needs to be continuously transmitted to the remote end, the neighbor hop value is decremented by 1, the neighbor discovery request message is backed up, and the neighbor discovery request message is encapsulated and forwarded through all interfaces. The neighbor discovers the request message to the network where the interface is located.
  • Step 207 The interface transmits the neighbor discovery request message to the network topology module of the multi-interface adaptation layer.
  • the useful information includes the interface information, the address, the location information, and the like of the neighbor node.
  • the network topology information is a topology of the entire network obtained by the network topology module according to the optimal configuration of the peripheral node information, including the terminal reaching any terminal of the network. The optimal path.
  • Step 209 The interface management module of the multi-interface adaptation layer collects the statistics of the broadcast messages received by the interfaces. If the interface does not receive the broadcast messages of other terminals, the If there is no neighboring terminal in the network mode, the interface is shut down or hibernated to save power. So far, the neighbor discovery of one cycle ends.
  • Step 301 When a multi-interface terminal needs to request a service from a terminal or a network, the service request command is transmitted down to the maximum. Interface adaptation layer;
  • Step 302 The coordinated control module of the multi-interface adaptation layer extracts the service request command to obtain the destination end (target network or target terminal), invokes the network topology information maintained by the network topology module, and obtains an effective communication link from the user terminal to the destination end. road.
  • Step 303 The collaborative control module evaluates the link quality, the communication rate, the bandwidth, the service type, and the interface priority of each communication link, and formulates the service offload mode according to the evaluation result, and sends the service to the interface management module.
  • Step 304 The interface management module controls the interface corresponding to each valid communication link to request the service and the parallel transmission service according to the service offloading manner.
  • FIG. 4 is a schematic structural diagram of establishing a multi-hop connection between heterogeneous terminals through a multi-interface terminal according to an embodiment of the present invention.
  • the terminal 1, the terminal 2, and the terminal 3 are all the multi-interface terminals according to the embodiment, wherein the terminal 1 has a 3G module and a WIFI module, and the terminal 2 has a Bluetooth module and an infrared module, because the two do not exist. Access to the same network interface, so communication is not possible directly.
  • the cooperative communication method proposed by the implementation manner can establish a communication link by using a peripheral terminal by establishing a multi-hop connection, and the specific implementation manner is as follows:
  • Step 401 The multi-interface adaptation layer of the terminal 1 updates the network topology information of the network topology module through the discovery of the neighboring terminal, and broadcasts the destination end to the network through the interface of the 3G module and the WIFI module (in this embodiment, the terminal) 2) link relay request message;
  • Step 402 The peripheral terminal (in the embodiment, the terminal 3 is used to describe the communication process, and in the actual communication process, the terminal that completes the relay transmission may have more than one), the interface receives the link relay request message (the WIFI module interface of the terminal 3), Determining whether the destination end of the link relay request message is itself.
  • the link relay request message is continuously forwarded through all interfaces (WIFI, Bluetooth, and infrared interfaces);
  • the link relay request message is sent to the interface management module, and the interface management module controls all interfaces to forward the link relay request message.
  • Step 403 The Bluetooth interface and the infrared interface of the terminal 2 receive the link relay request message forwarded by the terminal 3, decapsulate the message, and discover that the destination end is itself, and upload the link relay request message to the multi-interface adaptation layer of the terminal 2.
  • the network topology module the network topology module updates the network topology information, and returns the link relay response message through the two interfaces according to the original path;
  • the link relay response message carries the destination information, including interface information, a few hops, a communication link bandwidth, and a congestion situation.
  • the interface of the terminal 1 receives the link relay response message from the terminal 2, and reports the coordinated control module to the multi-interface adaptation layer of the terminal 1.
  • the cooperative control module of the terminal 1 passes the two according to the service requirement and the communication link bandwidth.
  • the strip path establishes a connection with the terminal 2 for service interaction.
  • the collaborative control module of the terminal 1 formulates a service distribution decision, and sends it to the interface management module, and the interface management module controls the corresponding interface to establish a connection according to the service distribution decision to perform service transmission.
  • the embodiment provides a multi-interface terminal, where the multi-interface terminal includes a network layer and at least two different interfaces, and further includes a multi-interface adaptation layer, where the multi-interface adaptation layer includes a network topology module and an interface management module.
  • the network topology module is configured to: after the multi-interface terminal joins the network, send a neighbor discovery request message to each interface, where the neighbor discovery request message carries a neighbor hop value; and, receiving the interface forwarding After the neighbor discovery request message, extract the related information in the neighbor discovery request message, and update the neighbor information and the network topology information;
  • the interface management module is configured to: control and manage the interface; After receiving the neighbor discovery request message, broadcast the neighbor discovery request message to the network, and listen to the broadcast message of other terminals on the network where the interface is located, and listen to the neighbor discovery request message if the neighbor Discover the number of neighbor hops carried in the request message.
  • the value indicates that the current terminal is the last hop, and the neighbor discovery request message is sent to the network topology module. If not, the neighbor discovery request message is sent to the network topology module, and the neighbor hop is modified.
  • the neighbor discovery request message is forwarded through all interfaces after the value.
  • the network topology module is configured to: periodically send a neighbor discovery request command to each interface;
  • the interface is configured to: periodically listen for broadcast messages of other terminals in the network where each interface is located, where the time for periodically listening to the broadcast message is less than the time for the periodic broadcast neighbor discovery request message.
  • the interface management module is further configured to: collect statistics on the broadcast messages received by the interfaces, and if the broadcast message of the other terminal is not received in the network where the interface is located, the interface is closed, or the interface is closed. Go to sleep and wake up periodically.
  • the multi-interface adaptation layer further includes a collaborative control module, where the collaborative control module is configured to: obtain, according to the network topology information maintained by the network topology module, when receiving the service request command of the network layer An effective communication link to the destination end; when the effective communication link is greater than one, determining a service offload mode between the effective communication links, and sending the manner to the interface management module;
  • the interface management module is further configured to: control each interface corresponding to each valid communication link to perform a request service and transmit the service in parallel according to the service offload mode.
  • the cooperative control module is configured to: perform, according to one or a combination of link information of each valid communication link, service information of the requested service, and interface information of each interface corresponding to each communication link, The service offloading manner is determined according to the evaluation result.
  • the network topology module is further configured to: when the service request command of the network layer is received, and the effective communication link to the destination end is not obtained according to the network topology information, The link relay request command of the destination end; the interface is further configured to: after receiving the link relay request command, respectively broadcast a link relay request message carrying the destination end to the respective network; and receiving the destination end After the returned link relay response message is forwarded to the coordinated control module; The coordinated control module is further configured to: after receiving the link relay response message forwarded by the interface, establish an effective communication link with the destination end.
  • the interface is further configured to: when receiving a link relay request message sent by another terminal, determine whether the destination terminal in the link relay request message is itself, and if not, forward the link relay request message And the interface management module is further configured to: send the link relay request message to the network topology module; the interface management module is further configured to: when receiving the link relay request message forwarded by the interface, Instructing all interfaces of the multi-interface terminal to forward the link relay request message; the network topology module is further configured to: when receiving the link relay request message, update network topology information, indicating that each interface passes the original The path returns a link relay response message to the source multi-interface terminal that initiated the link relay request.
  • the multi-interface terminal of the present embodiment effectively improves the communication efficiency by utilizing the advantages of the multiple interfaces through cooperative communication with the peripheral terminals and parallel transmission through multiple interfaces, and is composed by using different interfaces.
  • Multi-hop relay transmission effectively expands the reachability of the terminal and the coverage of the network.
  • the relay transmission through the heterogeneous terminal interface shields the heterogeneity of the terminal itself.
  • the present embodiment enhances the communication capability by improving the multi-interface terminal, complements the advantages of each network through the parallel use of multiple interfaces, and further realizes the optimal configuration of resources and the maximum transmission of information by utilizing the advantages of cooperative transmission among the peripheral multi-terminals. .
  • the terminal communication implemented by the method described in this embodiment can shield the difference of various access technologies in the lower layer, and truly realize that the user terminal can implement a stable and efficient information transmission service at any place.
  • the modules or steps of the above embodiments may be implemented by a general computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • the invention may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the embodiments of the present invention provide a multi-interface terminal neighbor topology discovery method, a cooperative communication method, and a multi-interface terminal, which improve multi-interface usage.
  • the provided multi-interface terminal shields the heterogeneous and interface differences of the network in the communication process, and fully utilizes the advantages of the multiple interfaces to effectively improve the communication efficiency through the cooperative communication multi-interface parallel transmission, and forms a multi-hop by using different interfaces.
  • Relay transmission effectively expands the reachability of the terminal and the coverage of the network.

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Abstract

本发明提供了一种多接口终端邻居拓扑发现方法，提高多接口使用率。所述方法包括：多接口终端加入网络后，通过各接口向各自的网络广播邻居发现请求消息，所述邻居发现请求消息中携带邻居跳数值；以及，所述网络中的多接口终端侦听其各接口所在网络其他终端的广播消息，侦听到邻居发现请求消息时，如果所侦听到的邻居发现请求消息中携带的邻居跳数值指示本终端为最后一跳，则提取所述邻居发现请求消息中的相关信息，更新本终端的邻居信息和网络拓扑信息；如果所述邻居跳数值指示本终端不是最后一跳，则还修改所述邻居跳数值后通过所有接口转发所述邻居发现请求消息。

Description

多接口终端邻居拓朴发现、 协作通信方法和多接口终端
技术领域
本发明涉及无线通信技术领域， 特别是涉及一种多接口终端邻居拓朴发 现、 协作通信方法及多接口终端。
背景技术
泛在 /物联网络环境下多种通信技术并存， 多模式、 多接口、 多信道的智 能终端无疑成为一个重要的发展方向。用户周边涌现出越来越多的智能设备， 嵌入人们生活、 工作的空间， 很多终端为满足人们对多元化网络的需求搭载 了蓝牙、红外、 WLAN( Wireless Local Area Network,无线局域网络)、 WIMAX ( Worldwide Interoperability for Microwave Access, 全球互通微波接入 )等众 多接口， 成为多接口的智能终端。 然而， 在实际应用中， 多接口智能终端的 优势没有得到充分的体现， 它往往是选择链路质量最优的通信线路进行信息 交互， 很多接口的使用率十分低下， 未能体现多接口带来的协同通信优势； 另外， 具有不同接口的终端无法直接进行通信。
发明内容
本发明要解决的技术问题是提供一种多接口终端邻居拓朴发现方法、 协 作通信方法和多接口终端， 提高多接口使用率。
为了解决上述问题， 本发明提供了一种多接口终端邻居拓朴发现方法， 包括： 多接口终端加入网络后， 通过各接口向各自的网络广播邻居发现请求消 息， 所述邻居发现请求消息中携带邻居跳数值； 以及， 所述网络中的多接口终端侦听其各接口所在网络其他终端的广播消息， 侦听到邻居发现请求消息时， 如果所侦听到的邻居发现请求消息中携带的邻 居跳数值指示本终端为最后一跳， 则提取所述邻居发现请求消息中的相关信 息， 更新本终端的邻居信息和网络拓朴信息； 如果不是， 修改所述邻居跳数 值后通过所有接口转发所述邻居发现请求消息， 提取所述邻居发现请求消息 中的相关信息， 更新本终端的邻居信息和网络拓朴信息。 优选地， 上述方法还可具有以下特点， 所述多接口终端通过各接口向各自的网络广播邻居发现请求消息包括： 所述多接口终端周期性通过各接口向各自的网络广播邻居发现请求消息； 所述网络中的多接口终端侦听其各接口所在网络其他终端的广播消息包 括： 所述网络中的多接口终端周期性侦听各接口所在网络其他终端的广播消 息； 其中， 周期性侦听广播消息的时间小于所述周期性广播邻居发现请求消 息的时间。 优选地， 上述方法还可具有以下特点， 所述多接口终端对各接口接收到的广播消息进行统计， 如果指定时间网 络中的内一接口所在网络中未接收到其他终端的广播消息， 所述多接口终端 将该接口关闭或者转入休眠状态， 周期性唤醒该接口。 本发明还提供一种多接口终端协作通信方法， 多接口终端获取网络拓朴 信息后， 还包括： 所述多接口终端需要请求业务时， 根据所述网络拓朴信息获取至目的端 的有效通信链路； 当所述有效通信链路大于一条时， 确定各有效通信链路之间的业务分流 方式； 多接口终端根据所述业务分流方式通过各有效通信链路对应的各接口请 求业务及并行传输所述业务。 优选地， 上述方法还可具有以下特点， 所述确定各有效通信链路之间的业务分流方式包括： 根据所述各有效通信链路的链路信息、 所请求业务的业务信息及各通信 链路对应的各接口的接口信息中的一项或任意几项的组合进行评估， 根据评 估结果确定所述业务分流方式。 优选地， 上述方法还可具有以下特点， 多接口终端需要请求业务时， 根据所述网络拓朴信息未获取到至目的端 的有效通信链路时， 通过如下方式获取所述有效通信链路： 多接口终端通过各接口分别向各自的网络广播携带有目的端的链路接力 请求消息； 周边终端接收到所述链路接力请求消息时， 判断所述链路接力请求消息 中的目的端是否是自己， 如果不是， 通过自己的所有接口转发所述链路接力 请求消息； 如果是， 通过原路径返回链路接力响应消息至发送该链路接力请 求消息的多接口终端； 所述发送该链路接力响应消息的多接口终端接收到所述链路接力响应消 息后， 与所述目的端建立有效通信链路。 本发明还提供一种多接口终端， 所述多接口终端包括网络层和至少两个 不同的接口， 还包括多接口适配层， 所述多接口适配层包括网络拓朴模块及 接口管理模块： 所述网络拓朴模块设置为： 在所述多接口终端加入网络后， 向各接口下 发邻居发现请求消息， 所述邻居发现请求消息中携带邻居跳数值； 以及， 接 收到所述接口转发的邻居发现请求消息后， 提取所述邻居发现请求消息中的 相关信息， 更新邻居信息和网络拓朴信息； 所述接口管理模块设置为： 对所述接口进行控制和管理； 所述接口设置为： 接收到所述邻居发现请求消息后， 向所在的网络广播 所述邻居发现请求消息， 以及， 侦听该接口所在网络其他终端的广播消息， 侦听到邻居发现请求消息时， 如果所述邻居发现请求消息中携带的邻居跳数 值指示本终端为最后一跳， 则将所述邻居发现请求消息发送给所述网络拓朴 模块， 如果不是， 将所述邻居发现请求消息发送给所述网络拓朴模块， 修改 所述邻居跳数值后通过所有接口转发所述邻居发现请求消息。 优选地， 上述多接口终端还可具有以下特点， 所述网络拓朴模块是设置为： 周期性向本终端的各接口下发邻居发现请 求命令；
所述接口是设置为： 周期性侦听各接口所在网络其他终端的广播消息包 括； 其中， 周期性侦听广播消息的时间小于所述周期性广播邻居发现请求消 息的时间。 优选地， 上述多接口终端还可具有以下特点， 所述接口管理模块还设置为： 对各接口接收到的广播消息进行统计， 如 果指定时间内一接口所在网络中未接收到其他终端的广播消息， 将该接口关 闭， 或者， 将该接口进入休眠状态并周期性唤醒。 优选地， 上述多接口终端还可具有以下特点， 所述多接口适配层还包括协同控制模块， 所述协同控制模块设置为： 在接收到所述网络层的业务请求命令时， 根 据所述网络拓朴模块维护的网络拓朴信息获取至目的端的有效通信链路； 当 所述有效通信链路大于一条时， 确定各有效通信链路之间的业务分流方式， 发送给接口管理模块； 所述接口管理模块还设置为： 根据所述业务分流方式控制各有效通信链 路对应的各接口进行请求业务及并行传输所述业务。 优选地， 上述多接口终端还可具有以下特点， 所述协同控制模块是设置为： 根据所述各有效通信链路的链路信息、 所 请求业务的业务信息及各通信链路对应的各接口的接口信息中的一项或任意 几项的组合进行评估， 根据评估结果确定所述业务分流方式。 优选地， 上述多接口终端还可具有以下特点， 所述网络拓朴模块还设置为： 在接收到所述网络层的业务请求命令， 根 据所述网络拓朴信息未获取到至目的端的有效通信链路时， 向各接口下发携 带有目的端的链路接力请求命令； 所述接口还设置为： 接收到所述链路接力请求命令后， 分别向各自的网 络广播携带有所述目的端的链路接力请求消息； 以及， 接收到目的端返回的 链路接力响应消息后， 转发给所协同控制模块； 所述协同控制模块还设置为： 接收到接口转发的链路接力响应消息后， 与所述目的端建立有效通信链路。 优选地， 上述多接口终端还可具有以下特点， 所述接口还设置为： 接收到其它终端发送的链路接力请求消息时， 判断 所述链路接力请求消息中的目的终端是否是自己， 如果不是， 将所述链路接 力请求消息转发给接口管理模块； 如果是， 将所述链路接力请求消息发送给 所述网络拓朴模块； 所述接口管理模块还设置为： 接收到所述接口转发的所述链路接力请求 消息时， 指示所述多接口终端的所有接口转发所述链路接力请求消息； 所述网络拓朴模块还设置为： 接收到所述链路接力请求消息时， 更新网 络拓朴信息， 指示各接口通过原路径返回链路接力响应消息至发起链路接力 请求的源多接口终端。
上述的多接口终端在通信过程中对用户屏蔽网络的异构、 接口的差异， 由于充分利用其多接口的优势通过协作通信多接口并行传输可以有效提高通 信效率， 通过利用不同接口组成多跳接力传输有效拓展了终端的可达性及网 络的覆盖范围。
附图概述
图 1是本发明实施方式所提供的多接口终端结构示意图；
图 2是本发明实施例中一种邻居终端拓朴发现方法的流程图；
图 3是本发明实施例中一种多终端协同通信的流程图；
图 4是本发明实施例中一种通过多接口终端实现异构终端之间建立多跳 连接的结构示意图。 本发明的较佳实施方式
为使本实施方式的目的、 技术方案和优点更加清楚明白， 下文中将结合 附图对实施例进行详细说明。 应当理解， 此处所描述的具体实施例仅仅用以 解释本发明， 并不限定本发明。 需要说明的是， 在不冲突的情况下， 本申请 中的实施例及实施例中的特征可以相互任意组合。
本实施方式提供一种多接口终端， 其中所述多接口终端包括但不限于移 动终端在内的通信终端， 具有至少两个接口， 可以通过多种无线接口模式接 入不同的无线网络， 比如 WLAN、 Internet, WIMAX, ZigBee等。 本实施方 式所述多接口终端有别于传统的无线路由器及现有的一些多接口实现方式， 它所搭载的多个接口可以接入多种模式的异构网络， 进而实现异构终端之间 的互联互通。
所述多接口终端通过在 MAC层与 IP (网络）层之间添加一多接口适配 层可以实现对上层网络屏蔽接口的多样化、 互异性， 同时对接口提供高层的 各种应用服务。
本实施方式提供一种利用上述多接口终端发现周边终端， 即邻居终端拓 朴发现方法， 包括以下步骤：
多接口终端在加入网络后， 通过多接口适配层周期性的向各接口发送邻 居发现请求消息， 各接口模式对应的接口（MAC层和物理层）收到该消息后 对该消息进行封装通过无线接口以广播消息的方式（广播消息中包含部居跳 数值， 邻居跳数值的大小由需要拓朴的网络大小决定）传递到各自所在网络 的无线信道中去； 多接口也通过自身各接口侦听信道其它终端的广播消息。 如果有接口收 到邻居发现请求消息， 提取该邻居发现请求消息中的邻居跳数值， 如果该邻 居跳数值指示当前终端为最后一跳， 则将所述邻居发现请求消息发送给所述 多接口适配层， 如果不是， 将所述邻居发现请求消息发送给所述多接口适配 层， 修改所述邻居跳数值后通过所有接口转发所述邻居发现请求消息。 具体 的， 如果跳数值大于 1则将跳数值减 1向多接口适配层的网络拓朴模块上传， 以及， 通过各个接口转发该消息， 如果跳数值不大于 1 , 直接将邻居发现请 求消息上传至网络拓朴模块；
多接口适配层的网络拓朴模块收到邻居发现请求消息， 对消息中的有用 信息进行提取并更新维护邻居信息和网络拓朴信息；
特别地， 如果指定时间内多接口终端的某接口模式收不到任何其他终端 的广播消息， 则认为该接口模式无效， 为了减少功率消耗将该接口予以关闭 或进入休眠状态， 每隔一段时间唤醒接收消息；
经过以上步骤， 每个终端都可以通过一跳或多跳链路到达周边异构终 端， 真正实现异构终端之间的互联互通。
本实施方式还提供一种用户终端为完成某项通信业务而发起的协同周边 终端共同完成的高效通信方法， 业务提供方可能是某个终端也可能来自网络 服务商， 具体方法包括以下步骤：
用户终端业务请求命令下达至多接口适配层， 协同控制模块调用网络拓 朴模块的网络拓朴信息并查找至目的端的有效通信链路； 所述目的端为业务 提供终端或网络；
当有效通信链路数量为一条时直接建立链接， 进行业务的请求及传输； 当有效通信链路大于一条时， 协同控制模块根据各有效通信链路的链路 信息、 所请求业务的业务信息及各通信链路对应的各接口的接口信息之一或 其组合进行评估， 并根据评估结果确定业务分流方式， 根据业务分流方式通 过各有效通信链路对应的各接口请求业务及并行传输所述业务。 此处所述的 多条通信链路与该多接口终端可进行通信的接口数量有关， 每条通信链路对 应一个接口。 其中， 各有效通信链路的链路信息包括： 网络的时延、 链路带 宽、 拥塞情况、 链路能耗等， 接口信息包括接口优先级等， 业务信息包括业 务类型等。
图 1所示为本发明实施方式所提供的能够实现异构终端之间互联互通的 多接口终端的结构示意图。 该多接口终端包括网络层 101、 多接口适配层 102 和各接口 103组成，其中，接口 103包括 MAC层和物理层，其中网络层 101、 接口 103与普通终端相同， 由于各接口对应的不同网络模式， 所以下层的网 络协议也各不相同， 为完成了异构终端之间的互联互通功能在网络层 101和 接口 103 中间添加多接口适配层 102, 完成资源管理调度、 协议地址转换等 功能。
多接口适配层 102包括协同控制模块 1021、 网络拓朴模块 1022和接口 管理模块 1023 , 其中：
协同控制模块 1021 , 是多接口终端实现协同通信、 分布式协同接力通信 的关键， 可通过分析网络的时延、 传输链路带宽、 拥塞情况、 链路能耗、 接 口优先级、 业务类型等， 对网络拓朴模块存储的通信链路进行分析制定合理 高效的协同通信方式及选用接口， 并将控制命令及信息下达至接口管理模块 1023执行传输；
网络拓朴模块 1022, 主要用来完成邻居发现过程中邻居信息和网络拓朴 信息的存储更新， 存储周边邻居终端的接口信息、 地址、 位置信息等， 通过 对网络的逻辑拓朴及物理拓朴关系制定与目的端之间的通信链路；
接口管理模块 1023 , 设置为对终端多接口的控制及管理， 可以对使用频 率低的接口进行关闭节约功率， 并通过休眠唤醒机制在不影响网络正常通信 的前提下实现功率的最大化利用，另夕卜，接口管理模块还存储了 ARP( Address Resolution Protocol, 地址解析协议）表用来存储不同接口模式下终端的 MAC 地址， 并对地址进行转换， 使其对用户呈现统一的 IP地址。
如图 2所示， 本发明实施例所提供的涉及一种邻居终端拓朴发现方法， 所述方法包括以下步骤：
步骤 201 , 多接口终端加入网络， 由于多接口模式的存在， 此处终端可 能跟区域内多个网络发出加入请求并完成加入过程， 此时该多接口终端中未 存储邻居节点信息；
步骤 202: 加入网络成功后该多接口终端的多接口适配层周期性的向接 口下发邻居发现请求消息， 该邻居发现请求消息中携带邻居跳数值。
本步骤中， 之所以要周期性发送邻居发现请求消息是考虑到终端本身可 能处于移动状态， 其周边网络及节点状况时刻在发生着改变， 即使终端移动 性 ^艮低， 周围节点也在不定期的加入、 退出网络， 网络拓朴位置关系处于变 化过程， 邻居发现请求消息的周期可以根据网络变化适当予以调整。 另外本 步骤中， 邻居跳数值是该邻居发现请求消息所能覆盖的网络范围， 一跳只覆 盖直接与该终端有通信链路的终端， 多跳中间经历了多个中继终端的接力传 输， 所覆盖的范围更广， 一般小范围的局域网只需要三到四跳便可完成整个 网络节点的连通。
步骤 203 : 各接口对收到的来自多接口适配层的邻居发现请求消息进行 封装， 并通过所有接口的无线信道以广播的方式传输至各接口模式所在网络 中， 同时设定定时器定时侦听各接口信道中周边其它终端的广播消息。
本步骤中， 邻居发现请求消息封装成各接口所在网络传输协议的要求方 能在各自网络中传输，另外设定的侦听信道定时时间要小于周期性广播时间， 尽量减少丟失广播消息。
步骤 204: —旦有接口侦听到邻居发现请求消息， 解包提取其中的邻居 跳数值。
步骤 205: 对邻居跳数值进行判断， 如果邻居跳数值为 1 (代表当前终端 是最后一跳） ， 则直接传送消息， 跳转至步骤 207 , 否则跳转至步骤 206。
步骤 206: 由于跳数值不为 1 , 所以还需要继续向远端传送该邻居发现请 求消息， 将邻居跳数值减 1 , 备份该邻居发现请求消息， 并封装该邻居发现 请求消息通过所有接口转发该邻居发现请求消息至该接口所在网络。
步骤 207: 该接口将邻居发现请求消息向上层传输， 至多接口适配层的 网络拓朴模块。 步骤 208: 网络拓朴模块对邻居发现请求消息中的有用信息进行提取， 并更新存储中的邻居信息及网络拓朴信息。
本步骤中， 有用信息包括邻居节点的接口信息、 地址、 位置信息等， 网 络拓朴信息是网络拓朴模块根据周边节点信息优化配置获得的整个网络的拓 朴， 包括该终端到达网络任一终端的最优路径。
步骤 209: 多接口适配层的接口管理模块对各接口收到的广播消息频率 进行统计， 如果统计一段时间发现某接口未收到其他终端的广播消息， 即在 其所在网络模式下不存在邻居终端， 则将该接口关闭或休眠以节约功耗， 至 此一个周期的邻居发现结束。
通过以上方法可以建立实时的网络拓朴结构及终端到达网络任一终端的 多跳链路及最优链路。
图 3所示的流程图描述了多接口终端协同通信、 并行传输的处理过程， 具体步骤如下： 步骤 301 : 当有多接口终端需要向某终端或网络请求业务时， 业务请求 命令向下传至多接口适配层；
步骤 302: 多接口适配层的协同控制模块对业务请求命令进行提取获取 目的端 （目标网络或目标终端） ， 调用网络拓朴模块维护的网络拓朴信息并 获取用户终端至目的端的有效通信链路。
步骤 303: 协同控制模块对每条通信链路的链路质量、 通信速率、 带宽、 业务类型、 接口优先级等进行评估， 根据评估结果制定业务分流方式， 发送 给接口管理模块。
步骤 304: 接口管理模块控制各有效通信链路对应的接口按照所述业务 分流方式请求业务及并行传送业务。
利用多接口终端的特点， 借助周围多接口终端形成接力传输便能实现异 构终端的信息交互。 如图 4所示是本发明实施例中一种通过多接口终端实现 异构终端间建立多跳连接的结构示意图。
如图 4所示， 终端 1、 终端 2和终端 3都为本实施方式所述的多接口终 端，其中终端 1具有 3G模块和 WIFI模块，终端 2具有蓝牙模块和红外模块， 由于二者不存在接入同一网络的接口， 所以无法直接进行通信。 但通过本实 施方式提出的协同通信方法可以通过建立多跳连接的方式借助周边终端建立 通信链路， 具体实现方式如下：
步骤 401 , 终端 1 的多接口适配层通过邻居终端的发现更新网络拓朴模 块的网络拓朴信息， 通过 3G模块和 WIFI模块接口向各自的网络广播携带有 目的端 （本实施例中为终端 2 ) 的链路接力请求消息； 步骤 402, 周边终端 （本实施例中以终端 3来说明通信过程， 实际通信 流程中， 完成接力传输的终端可能不止一个）有接口收到链路接力请求消息 (终端 3的 WIFI模块接口 ),判断链路接力请求消息中的目的端是否为自己， 如果不是将链路接力请求消息封装， 通过自己的所有接口 （WIFI、 蓝牙、 红 外三个接口）继续转发该链路接力请求消息； 具体的， 将链路接力请求消息 发送给接口管理模块，接口管理模块控制所有接口转发该链路接力请求消息。
步骤 403 , 终端 2的蓝牙接口和红外接口收到了终端 3转发的链路接力 请求消息， 解封装该消息发现目的端就是自己， 将链路接力请求消息上传至 终端 2的多接口适配层的网络拓朴模块， 网络拓朴模块更新网络拓朴信息， 同时按原路径通过两个接口返回链路接力响应消息；
所述链路接力响应消息中携带目的端信息， 包括接口信息、 经历了几跳、 通信链路带宽、 拥塞情况等。
终端 1的接口收到来自终端 2的链路接力响应消息， 上报至终端 1的多 接口适配层的协同控制模块， 终端 1的协同控制模块根据业务需求、 通信链 路带宽等， 分别通过两条路径与终端 2建立连接进行业务交互。 具体的， 终 端 1的协同控制模块制定业务分发决策， 下发给接口管理模块， 接口管理模 块根据该业务分发决策控制相应接口建立连接进行业务传输。 本实施方式提供一种多接口终端， 所述多接口终端包括网络层和至少两 个不同的接口， 还包括多接口适配层， 所述多接口适配层包括网络拓朴模块 及接口管理模块： 所述网络拓朴模块设置为： 在所述多接口终端加入网络后， 向各接口下 发邻居发现请求消息， 所述邻居发现请求消息中携带邻居跳数值； 以及， 接 收到所述接口转发的邻居发现请求消息后， 提取所述邻居发现请求消息中的 相关信息， 更新邻居信息和网络拓朴信息； 所述接口管理模块设置为： 对所述接口进行控制和管理； 所述接口设置为： 接收到所述邻居发现请求消息后， 向所在的网络广播 所述邻居发现请求消息， 以及， 侦听该接口所在网络其他终端的广播消息， 侦听到邻居发现请求消息时， 如果所述邻居发现请求消息中携带的邻居跳数 值指示当前终端为最后一跳， 则将所述邻居发现请求消息发送给所述网络拓 朴模块， 如果不是， 将所述邻居发现请求消息发送给所述网络拓朴模块， 修 改所述邻居跳数值后通过所有接口转发所述邻居发现请求消息。
优选地， 所述网络拓朴模块是设置为： 周期性向各接口下发邻居发现请 求命令；
所述接口是设置为： 周期性侦听各接口所在网络其他终端的广播消息包 括； 其中， 周期性侦听广播消息的时间小于所述周期性广播邻居发现请求消 息的时间。 其中， 所述接口管理模块还设置为： 对各接口接收到的广播消息进行统 计， 如果指定时间内一接口所在网络中未接收到其他终端的广播消息， 将该 接口关闭， 或者， 将该接口进入休眠状态并周期性唤醒。 其中， 所述多接口适配层还包括协同控制模块， 所述协同控制模块设置 为： 在接收到所述网络层的业务请求命令时， 根据所述网络拓朴模块维护的 网络拓朴信息获取至目的端的有效通信链路； 当所述有效通信链路大于一条 时， 确定各有效通信链路之间的业务分流方式， 发送给接口管理模块；
所述接口管理模块还设置为： 根据所述业务分流方式控制各有效通信链 路对应的各接口进行请求业务及并行传输所述业务。 其中， 所述协同控制模块是设置为： 根据所述各有效通信链路的链路信 息、 所请求业务的业务信息及各通信链路对应的各接口的接口信息之一或其 组合进行评估， 根据评估结果确定所述业务分流方式。 其中， 所述网络拓朴模块还设置为： 在接收到所述网络层的业务请求命 令， 根据所述网络拓朴信息未获取到至目的端的有效通信链路时， 向各接口 下发携带有目的端的链路接力请求命令； 所述接口还设置为： 接收到所述链路接力请求命令后， 分别向各自的网 络广播携带有所述目的端的链路接力请求消息； 以及， 接收到目的端返回的 链路接力响应消息后， 转发给所协同控制模块； 所述协同控制模块还设置为： 接收到接口转发的链路接力响应消息后， 与所述目的端建立有效通信链路。 其中， 所述接口还设置为： 接收到其它终端发送的链路接力请求消息时， 判断所述链路接力请求消息中的目的终端是否是自己， 如果不是， 将所述链 路接力请求消息转发给接口管理模块； 如果是， 将所述链路接力请求消息发 送给所述网络拓朴模块； 所述接口管理模块还设置为： 接收到所述接口转发的所述链路接力请求 消息时， 指示所述多接口终端的所有接口转发所述链路接力请求消息； 所述网络拓朴模块还设置为： 接收到所述链路接力请求消息时， 更新网 络拓朴信息， 指示各接口通过原路径返回链路接力响应消息至发起链路接力 请求的源多接口终端。 由上述实施例可以看出， 本实施方式的多接口终端， 由于充分利用其多 接口的优势通过与周边终端协作通信， 以及通过多接口并行传输， 有效的提 高了通信效率， 通过利用不同接口组成多跳接力传输有效拓展了终端的可达 性及网络的覆盖范围。 另外， 通过异构终端接口的接力传输屏蔽终端本身异 构性。
本实施方式通过对多接口终端的改进来增强其通信能力， 通过多接口的 并行使用， 互补各网络优势， 另外通过利用周边多终端形成协同传输优势， 实现资源的优化配置及信息的最大化传输。 通过本实施方式所述方式实现的 终端通信可以屏蔽下层各种接入技术的差异， 真正实现用户终端在任意地点 都可实现稳定、 高效的信息传输服务。 显然， 本领域的技术人员应该明白， 上述的实施方式的各模块或各步骤 可以用通用的计算装置来实现， 它们可以集中在单个的计算装置上， 或者分 布在多个计算装置所组成的网络上， 可选地， 它们可以用计算装置可执行的 程序代码来实现， 从而， 可以将它们存储在存储装置中由计算装置来执行， 或者将它们分别制作成各个集成电路模块， 或者将它们中的多个模块或步骤 制作成单个集成电路模块来实现。 这样， 本发明不限制于任何特定的硬件和 软件结合。 工业实用性
本发明的所述实施方式提供一种多接口终端邻居拓朴发现方法、 协作通 信方法和多接口终端， 提高多接口使用率。 所提供的多接口终端在通信过程 中对用户屏蔽网络的异构、 接口的差异， 由于充分利用其多接口的优势通过 协作通信多接口并行传输可以有效提高通信效率， 通过利用不同接口组成多 跳接力传输有效拓展了终端的可达性及网络的覆盖范围。

Claims

1、 一种多接口终端邻居拓朴发现方法， 包括： 多接口终端加入网络后， 通过各接口向各自的网络广播邻居发现请求消 息， 所述邻居发现请求消息中携带邻居跳数值； 以及， 所述网络中的多接口终端侦听其各接口所在网络其他终端的广播消息， 侦听到邻居发现请求消息时， 如果所侦听到的邻居发现请求消息中携带的邻 居跳数值指示本终端为最后一跳， 则提取所述邻居发现请求消息中的相关信 息， 更新本终端的邻居信息和网络拓朴信息； 如果所述邻居跳数值指示本终 端不是最后一跳， 则修改所述邻居跳数值后通过所有接口转发所述邻居发现 请求消息， 提取所述邻居发现请求消息中的相关信息， 更新本终端的邻居信 息和网络拓朴信息。
2、 如权利要求 1所述的方法， 其中， 所述多接口终端通过各接口向各自的网络广播邻居发现请求消息的步骤 包括： 所述多接口终端周期性地通过各接口向各自的网络广播邻居发现请求 消息； 所述网络中的多接口终端侦听其各接口所在网络其他终端的广播消息的 步骤包括： 所述网络中的多接口终端周期性地侦听其各接口所在网络其他终 端的广播消息； 其中， 周期性地侦听所述广播消息的时间小于周期性地广播所述邻居发 现请求消息的时间。
3、 如权利要求 1所述的方法， 其还包括： 所述网络中的多接口终端对其 各接口接收到的所述广播消息进行统计， 如果指定时间内一接口所在网络中 未接收到其他终端的广播消息， 则该终端将该接口关闭或者转入休眠状态， 周期性地唤醒该接口。
4、 一种多接口终端协作通信方法， 其中， 多接口终端基于权利要求 1至
3 任一项所述的邻居拓朴发现方法获取网络拓朴信息， 所述多接口终端协作 通信方法还包括： 所述网络中的多接口终端需要请求业务时， 根据所述网络拓朴信息获取 至目的端的有效通信链路； 当所述有效通信链路大于一条时， 确定各有效通信链路之间的业务分流 方式； 该多接口终端根据所述业务分流方式通过各有效通信链路对应的各接口 请求业务及并行传输所述业务。
5、 如权利要求 4所述的多接口终端协作通信方法方法， 其中， 所述确定 各有效通信链路之间的业务分流方式的步骤包括： 根据所述各有效通信链路的链路信息、 所请求业务的业务信息及各通信 链路对应的各接口的接口信息中的一项或任意几项的组合进行评估， 根据评 估结果确定所述业务分流方式。
6、 如权利要求 4所述的多接口终端协作通信方法方法， 其还包括： 当所 述网络中的多接口终端需要请求业务时， 根据所述网络拓朴信息未获取到至 目的端的有效通信链路时， 通过如下方式获取所述有效通信链路： 该多接口终端通过各接口分别向各自的网络广播携带有目的端的链路接 力请求消息； 周边终端接收到所述链路接力请求消息时， 判断所述链路接力请求消息 中的目的端是否是自己， 如果不是， 通过自己的所有接口转发所述链路接力 请求消息； 如果是， 通过原路径返回链路接力响应消息至发送该链路接力请 求消息的多接口终端； 所述发送该链路接力响应消息的多接口终端接收到所述链路接力响应消 息后， 与所述目的端建立有效通信链路。
7、一种多接口终端，所述多接口终端包括网络层和至少两个不同的接口， 还包括多接口适配层，所述多接口适配层包括网络拓朴模块及接口管理模块， 其中： 所述网络拓朴模块设置为： 在所述多接口终端加入网络后， 向各接口下 发邻居发现请求消息， 所述邻居发现请求消息中携带邻居跳数值； 以及， 接 收到所述接口转发的邻居发现请求消息后， 提取所述接口转发的邻居发现请 求消息中的相关信息， 更新邻居信息和网络拓朴信息；
所述接口管理模块设置为： 对所述接口进行控制和管理； 所述接口设置为： 接收到邻居发现请求消息后， 向所在的网络广播该邻 居发现请求消息， 以及， 侦听该接口所在网络其他终端的广播消息， 侦听到 邻居发现请求消息时， 如果该邻居发现请求消息中携带的邻居跳数值指示本 终端为最后一跳， 则将该邻居发现请求消息发送给所述网络拓朴模块， 如果 所述邻居跳数值指示本终端不是最后一跳， 将该邻居发现请求消息发送给所 述网络拓朴模块， 修改该邻居发现请求消息种的邻居跳数值后通过所有接口 转发该邻居发现请求消息。
8、 如权利要求 7所述的多接口终端， 其中，
所述网络拓朴模块是设置为： 周期性地向本终端的各接口下发邻居发现 请求命令；
所述接口是设置为： 周期性地侦听本终端的各接口所在网络其他终端的 广播消息； 其中， 周期性地侦听所述广播消息的时间小于周期性地下发邻居发现请 求消息的时间。
9、如权利要求 7所述的多接口终端，其中，所述接口管理模块还设置为： 对各接口接收到的广播消息进行统计， 如果指定时间内一接口所在网络中未 接收到其他终端的广播消息， 将该接口关闭或者将该接口进入休眠状态并周 期性地唤醒。
10、 如权利要求 7至 9任一所述的多接口终端， 其中， 所述多接口适配层还包括协同控制模块， 所述协同控制模块设置为： 在接收到所述网络层的业务请求命令时， 根 据所述网络拓朴模块维护的网络拓朴信息获取至目的端的有效通信链路； 当 所述有效通信链路大于一条时， 确定各有效通信链路之间的业务分流方式， 发送给所述接口管理模块； 所述接口管理模块还设置为： 根据所述业务分流方式控制各有效通信链 路对应的各接口进行请求业务及并行传输所述业务。
11、 如权利要求 10所述的多接口终端， 其中， 所述协同控制模块是设置 为： 根据所述各有效通信链路的链路信息、 所请求业务的业务信息及各通信 链路对应的各接口的接口信息中的一项或任意几项的组合进行评估， 根据评 估结果确定所述业务分流方式。
12、 如权利要求 10所述的多接口终端， 其中， 所述网络拓朴模块还设置为： 在接收到所述网络层的业务请求命令， 根 据所述网络拓朴信息未获取到至目的端的有效通信链路时， 向各接口下发携 带有目的端的链路接力请求命令； 所述接口还设置为： 接收到所述链路接力请求命令后， 分别向各自的网 络广播携带有所述目的端的链路接力请求消息； 以及， 接收到目的端返回的 链路接力响应消息后， 转发给所述协同控制模块； 所述协同控制模块还设置为： 接收到所述接口转发的链路接力响应消息 后， 与所述目的端建立有效通信链路。
13、 如权利要求 10所述的多接口终端， 其中， 所述接口还设置为： 接收到其它终端发送的链路接力请求消息时， 判断 所述链路接力请求消息中的目的终端是否是自己， 如果不是， 将所述链路接 力请求消息转发给所述接口管理模块； 如果是， 将所述链路接力请求消息发 送给所述网络拓朴模块； 所述接口管理模块还设置为： 接收到所述接口转发的所述链路接力请求 消息时， 指示所述多接口终端的所有接口转发所述链路接力请求消息；
所述网络拓朴模块还设置为： 接收到所述链路接力请求消息时， 更新网 络拓朴信息， 指示各接口通过原路径返回链路接力响应消息至发起链路接力 请求的源多接口终端。
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