CN110213801B - Heterogeneous network communication method and equipment - Google Patents
Heterogeneous network communication method and equipment Download PDFInfo
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- CN110213801B CN110213801B CN201810167206.1A CN201810167206A CN110213801B CN 110213801 B CN110213801 B CN 110213801B CN 201810167206 A CN201810167206 A CN 201810167206A CN 110213801 B CN110213801 B CN 110213801B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
- H04W28/20—Negotiating bandwidth
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
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- 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
- H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
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Abstract
The heterogeneous network communication method and device provided by the embodiment of the application are characterized in that the capability information of at least one second terminal in the same mobile ad hoc network with a first terminal is received, wherein the first terminal is not connected with core network equipment of a mobile communication network, and the second terminal is connected with the core network equipment; the first terminal determines a third terminal serving as a relay node between the first terminal and the core network equipment according to the capability information of each second terminal, and sends a relay channel notification message to the core network equipment through the third terminal so as to instruct the core network equipment to communicate with the first terminal through the third terminal. By the method, the stability of heterogeneous network communication is improved.
Description
Technical Field
The embodiment of the application relates to the technical field of communication, in particular to a heterogeneous network communication method and equipment.
Background
With the continuous development and progress of the economy and society, the communication technology is rapidly developed, and different communication systems provide heterogeneous network environments for users. Heterogeneous network communication connects various different communication modes together to realize interconnection and intercommunication among different communication devices.
The existing mobile communication network system is a centralized advanced wireless bandwidth network system taking a base station and a core network as centers, and can provide a large-scale coverage, perfect quality of service (Qos, quality of Service) guarantee mechanism, stable time delay, a large number of access users and better security. But the centralized network system has poor survivability and the network has poor expandability. The existing mobile ad hoc network is a centerless distributed wireless bandwidth network system, can be flexibly networked, has strong network expansibility, can extend the coverage range of a network through multi-hop relay, but has the problems of short single-hop coverage distance, large multi-hop capacity loss, no Qos guarantee mechanism, poor safety and the like.
When the mobile communication network and the mobile ad hoc network simultaneously exist for hybrid networking, the problem of communication interruption is easily caused due to the lack of a good fusion mechanism.
Disclosure of Invention
The application provides a heterogeneous network communication method and equipment, which are used for improving the stability of heterogeneous network communication.
The first aspect of the present application provides a heterogeneous network communication method, including:
the first terminal receives capability information sent by at least one second terminal; the first terminal and at least one second terminal are in the same mobile ad hoc network, at least one second terminal is positioned in a mobile communication network, the second terminal is connected with core network equipment in the mobile communication network, and the first terminal is not connected with the core network equipment;
the first terminal determines a third terminal serving as a relay node between the first terminal and the core network equipment in the at least one second terminal according to the capability information of each second terminal;
the first terminal sends a relay channel notification message to the core network device through the third terminal, wherein the relay channel notification message is used for indicating the core network device to communicate with the first terminal through the third terminal;
and the first terminal receives the relay channel confirmation message sent by the core network equipment through the third terminal.
Optionally, the relay node includes a transmitting relay node and a receiving relay node; the first terminal sends a relay channel notification message to the core network device through the third terminal, including:
the first terminal sends a relay channel notification message to the core network equipment through a third terminal serving as a sending relay node;
the first terminal receives a relay channel confirmation message sent by the core network device through the third terminal, and the relay channel confirmation message comprises:
and the first terminal receives the relay channel confirmation message sent by the core network equipment through a third terminal serving as a receiving relay node.
Optionally, the first terminal determines, in the at least one second terminal, a third terminal serving as a relay node between the first terminal and the core network device according to capability information of each second terminal, including:
the first terminal calculates the transmitting path cost value and the receiving path cost value of each second terminal according to the capability information of each second terminal;
and taking the second terminal with the minimum transmission path cost value as a third terminal of the transmission relay node between the first terminal and the core network equipment, and taking the second terminal with the minimum reception path cost value as a third terminal of the reception relay node between the first terminal and the core network equipment.
Optionally, the calculating, by the first terminal, a transmission path cost value of each second terminal according to the capability information of each second terminal includes:
the first terminal calculates the first transmitting path cost value of each second terminal in the mobile ad hoc network and the second transmitting cost value of each second terminal in the mobile communication network according to the capability information of each second terminal;
and the first terminal weights according to the first transmission path cost value and the second transmission cost value to obtain the transmission path cost value of each second terminal.
Optionally, the calculating, by the first terminal, the reception path cost value of each second terminal according to the capability information of each second terminal includes:
the first terminal calculates the first receiving path cost value of each second terminal in the mobile ad hoc network and the second receiving cost value of each second terminal in the mobile communication network according to the capability information of each second terminal;
and the first terminal weights the first receiving path cost value and the second receiving cost value to obtain the receiving path cost value of each second terminal.
Optionally, the capability information of the second terminal includes a mobile ad hoc network bandwidth, a mobile communication network bandwidth, a received signal strength, and a transmitting power.
Optionally, after the first terminal receives the relay channel confirmation message sent by the core network device through the third terminal, the method further includes:
when the first terminal resumes connection with the core network device through the mobile communication network, the first terminal sends a relay channel cancellation message to the core network device;
and the first terminal receives a confirmation message of the cancellation of the relay channel sent by the core network equipment.
A second aspect of the present application provides a heterogeneous network communication device comprising:
the receiving module is used for receiving the capability information sent by the at least one second terminal; the method comprises the steps that a first terminal and at least one second terminal are in the same mobile ad hoc network, at least one second terminal is located in a mobile communication network, the second terminal is connected with core network equipment in the mobile communication network, and the first terminal is not connected with the core network equipment;
a relay determining module, configured to determine, from among the at least one second terminal, a third terminal that is a relay node between the first terminal and the core network device, according to capability information of each of the second terminals;
a sending module, configured to send, by using the third terminal, a relay channel notification message to the core network device, where the relay channel notification message is used to instruct the core network device to communicate with the first terminal through the third terminal;
the receiving module is further configured to receive, through the third terminal, a relay channel acknowledgement message sent by the core network device.
Optionally, the relay node includes a transmitting relay node and a receiving relay node;
the sending module is further configured to send a relay channel notification message to the core network device through a third terminal that is used as a sending relay node;
the receiving module is further configured to receive, through a third terminal that is a receiving relay node, a relay channel acknowledgement message sent by the core network device.
Optionally, the heterogeneous network communication device further includes:
the computing module is used for computing the transmitting path cost value and the receiving path cost value of each second terminal according to the capability information of each second terminal;
the confirmation module is further configured to use a second terminal with a minimum transmission path cost value as a third terminal of a transmission relay node between the first terminal and the core network device, and use a second terminal with a minimum reception path cost value as a third terminal of a reception relay node between the first terminal and the core network device.
Optionally, the calculating module is further configured to calculate a first transmission path cost value of each second terminal in the mobile ad hoc network and a second transmission cost value of each second terminal in the mobile communication network according to the capability information of each second terminal;
and weighting according to the first transmission path cost value and the second transmission cost value to obtain the transmission path cost value of each second terminal.
Optionally, the calculating module is further configured to calculate a first receiving path cost value of each second terminal in the mobile ad hoc network and a second receiving cost value of each second terminal in the mobile communication network according to the capability information of each second terminal;
and weighting according to the first receiving path cost value and the second receiving cost value to obtain the receiving path cost value of each second terminal.
Optionally, the capability information of the second terminal includes a mobile ad hoc network bandwidth, a mobile communication network bandwidth, a received signal strength, and a transmitting power.
Optionally, the sending module is further configured to send a relay channel cancellation message to the core network device when the first terminal resumes connection with the core network device through the mobile communication network;
the receiving module is further configured to receive a confirmation message of cancellation of the relay channel sent by the core network device.
A third aspect of the application provides a computer readable storage medium having stored thereon a computer program which when executed by a processor implements the method of any of the first aspects.
A fourth aspect of the present application provides a heterogeneous network communication device comprising:
a processor; and
a memory for storing executable instructions of the processor;
wherein the processor is configured to perform the method of any of the first aspects via execution of the executable instructions.
The embodiment of the application provides a heterogeneous network communication method and equipment, which are characterized in that capability information of at least one second terminal in the same mobile ad hoc network with a first terminal is received, wherein the first terminal is not connected with core network equipment of a mobile communication network, and the second terminal is connected with the core network equipment; the first terminal determines a third terminal serving as a relay node between the first terminal and the core network equipment according to the capability information of each second terminal, and sends a relay channel notification message to the core network equipment through the third terminal so as to instruct the core network equipment to communicate with the first terminal through the third terminal. By the method, the stability of heterogeneous network communication is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.
Fig. 1 is an application scenario diagram of heterogeneous network communication provided in an embodiment of the present application;
fig. 2 is a flow chart of a heterogeneous network communication method according to an embodiment of the present application;
fig. 3 is a schematic distribution diagram of a terminal device of a heterogeneous network according to an embodiment of the present application;
fig. 4 is a flow chart of a heterogeneous network communication method according to another embodiment of the present application;
fig. 5 is a schematic structural diagram of a heterogeneous network communication device according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a heterogeneous network communication device according to another embodiment of the present application
Fig. 7 is a schematic structural diagram of a heterogeneous network communication device according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Fig. 1 is an application scenario diagram of heterogeneous network communication provided by an embodiment of the present application, where, as shown in fig. 1, the heterogeneous network in this embodiment of the present application includes: a mobile communication network 1 and a mobile ad hoc network 2. The mobile communication network comprises a core network device, at least one base station and a plurality of terminal devices, and the mobile ad hoc network comprises a plurality of terminal devices. In particular, the method comprises the steps of,
the mobile communication network is a centralized advanced wireless broadband network with the base station and the core network as centers, and can provide a large-scale coverage, a perfect Qos guarantee mechanism, stable time delay, a large number of access users and better security. In the mobile communication network of the present embodiment, terminal devices within the coverage area of a base station communicate with the base station through the mobile communication network.
The mobile ad hoc network is a centerless distributed wireless bandwidth network, can provide flexible networking capability, has strong network expansibility, and can extend coverage through multi-hop relay. The terminal in the mobile ad hoc network has two functions of a router and a host, and is used as the host, the terminal needs to run various user-oriented application programs and is used as the router, the terminal needs to run corresponding routing protocols, and the forwarding and routing maintenance work of the data packets are completed according to the routing strategy and the routing table.
A base station (e.g., access point) may refer to a device in an access network that communicates over the air-interface, through one or more sectors, with wireless UEs. The base station may be configured to inter-convert the received air frames with internet protocol (Internet Protocol; hereinafter IP) packets as a router between the wireless UE and the rest of the access network, which may include an IP network. The base station may also coordinate attribute management for the air interface. For example, the base station may be a base station (Base Transceiver Station; hereinafter referred to as BTS) in GSM or CDMA, a base station (NodeB) in WCDMA, or an evolved base station (NodeB or eNB or e-NodeB) in LTE, and the present application is not limited thereto. Wherein, eNB or e-NodeB is the abbreviation of evolution base station (evolutional NodeB).
The terminal device may be a wireless terminal, which may be a device providing voice and/or data connectivity to a user, a handheld device having wireless connectivity, or other processing device connected to a wireless modem, or a wired terminal. A wireless terminal may communicate with one or more core networks via a radio access network (e.g., radio Access Network; simply RAN); the wireless terminals may be mobile terminals such as mobile telephones (or "cellular" telephones) and computers with mobile terminals, which may be, for example, portable, pocket, hand-held, computer-built-in or car-mounted mobile devices which exchange voice and/or data with radio access networks. For example, the wireless terminal may be: personal communication services (Personal Communication Service; hereinafter referred to as PCS) telephones, cordless telephones, session initiation protocol (Session Initiation Protocol; hereinafter referred to as SIP) telephones, wireless local loop (Wireless Local Loop; hereinafter referred to as WLL) stations, personal digital assistants (Personal Digital Assistant; hereinafter referred to as PDAs) and the like. A wireless terminal may also be called a system, subscriber Unit (Subscriber Unit), subscriber Station (Subscriber Station), mobile Station (Mobile Station), remote Station (Remote Station), access Point (Access Point), remote UE (Remote Terminal), access UE (Access Terminal), user UE (User Terminal), user Agent (User Agent), user Equipment (User Device), user Equipment (User Equipment), or the like.
The convergence scheme of the mobile communication network and the mobile ad hoc network provided by the embodiment can fully utilize the wide coverage, stability and Qos mechanism of the mobile communication network, and can also utilize the flexible networking characteristic of the mobile ad hoc network to carry out coverage extension and network backup on the mobile communication network.
For a better understanding of the technical solution of the present application, embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 2 is a flow chart of a heterogeneous network communication method according to an embodiment of the present application, and fig. 3 is a distribution diagram of a terminal device of a heterogeneous network according to an embodiment of the present application, as shown in fig. 2, where the heterogeneous network communication method according to the embodiment of the present application specifically includes the following steps:
s201, a first terminal receives capability information sent by at least one second terminal;
the first terminal and at least one second terminal are in the same mobile ad hoc network, the at least one second terminal is positioned in the mobile communication network, the second terminal is connected with core network equipment in the mobile communication network, and the first terminal is not connected with the core network equipment;
s202, the first terminal determines a third terminal serving as a relay node between the first terminal and core network equipment in at least one second terminal according to the capability information of each second terminal;
the above two steps are described below with reference to specific examples. Referring to fig. 3, it is assumed that the first terminal 5 and the second terminals 2, 3, 4 are in the same mobile ad hoc network, wherein the second terminals 2, 3 are also located within the coverage of the base station 1 of the mobile communication network at the same time. The first terminal 5, due to leaving the coverage area of the mobile communication network base station 1, cannot connect with the core network device 6, in this case, the first terminal 5 may actively initiate to acquire capability information of each second terminal in the mobile ad hoc network, or directly receive capability information periodically sent by each second terminal, and determine, according to the received capability information sent by each second terminal, a suitable third terminal as a relay node to access the core network device 6.
Specifically, the capability information of the second terminal in this embodiment is used to indicate the capability of the second terminal to access the mobile communication network and the mobile ad hoc network, where the capability includes a transmitting capability and a receiving capability.
Referring to fig. 3, the first terminal 5 determines the second terminal in the mobile ad hoc network connected to the core network device 6, i.e., the second terminal 2, 3, according to the received capability information of the second terminal 2, 3, 4, and selects the most suitable third terminal from the second terminals 2, 3 to access the core network device 6 by calculation. The third terminal is a terminal serving as a relay node between the first terminal 5 and the core network device 6.
It should be noted that, the terminal device provided in this embodiment improves on the basis of the existing terminal device, and specifically includes a mobile communication network module, a mobile ad hoc network module, a relay determining module and an application service module. The relay determining module is a key module of the embodiment of the application, and is a gateway for an application service module of the terminal equipment, the gateway is connected with two networks of the mobile communication network and the mobile ad hoc network, an external application service message of the terminal equipment needs to be transmitted by selecting a proper network for the gateway, and meanwhile, the gateway also needs to select a proper path for forwarding the messages from the two networks.
In the prior art, if the first terminal leaves the coverage area of the base station in the mobile communication network, the first terminal cannot get in contact with the core network device, resulting in a communication terminal. The first terminal can be connected to the core network device again only when the first terminal returns to the coverage of the original base station again, or when the first terminal moves to the coverage of other base stations.
Compared with the prior art, the first terminal in the embodiment of the application determines the most suitable third terminal from the second terminals in the mobile ad hoc network where the first terminal is located as the relay node between the first terminal and the core network equipment based on the relay confirmation module of the first terminal, so that the normal communication between the first terminal and the core network equipment is realized, the stability of heterogeneous network communication is improved, and the coverage extension of the mobile communication network is realized.
S203, the first terminal sends a relay channel notification message to the core network equipment through the third terminal;
the relay channel notification message is used for indicating the core network equipment to communicate with the first terminal through the third terminal;
after determining that the third terminal is used as the relay node, the first terminal in this embodiment sends a relay channel notification message to the core network device through a GRE tunnel preset by the core network device for the third terminal.
Correspondingly, after receiving the relay channel notification message sent by the first terminal, the core network device generates a dynamic route to the first terminal according to the relay channel notification message, stores the dynamic route of the first terminal in a routing table, and forwards the corresponding message to an application service module of the first terminal through the dynamic route when other terminals in the mobile communication network interact with the first terminal.
The core network device in this embodiment receives the relay channel notification message sent by the first terminal falling off the network at the third terminal of the network, so as to implement normal communication with the first terminal falling off the network.
S204, the first terminal receives the relay channel confirmation message sent by the core network device through the third terminal.
The heterogeneous network communication method provided by the embodiment of the application comprises the steps that a first terminal receives capability information of at least one second terminal in the same mobile ad hoc network with the first terminal, wherein the first terminal is not connected with core network equipment of a mobile communication network, and the second terminal is connected with the core network equipment; the first terminal determines a third terminal serving as a relay node between the first terminal and the core network equipment according to the capability information of each second terminal, and sends a relay channel notification message to the core network equipment through the third terminal so as to instruct the core network equipment to communicate with the first terminal through the third terminal. By the method, the stability of heterogeneous network communication is improved.
On the basis of the above embodiment, the first terminal determines, as the relay node, an appropriate third terminal according to the capability information of each second terminal, wherein the relay node includes a transmitting relay node and a receiving relay node, in other words, the third terminal as the relay node includes the third terminal as the transmitting relay node, and the third terminal as the receiving relay node. The two third terminals may be the same terminal or different terminals. A detailed description of how to determine the third terminal as a relay node is provided below in connection with specific embodiments.
Fig. 4 is a flowchart of a heterogeneous network communication method according to another embodiment of the present application, as shown in fig. 4, where the heterogeneous network communication method according to the present embodiment specifically includes the following steps:
s301, a first terminal receives capability information sent by at least one second terminal;
the first terminal and at least one second terminal are in the same mobile ad hoc network, the at least one second terminal is positioned in the mobile communication network, the second terminal is connected with core network equipment in the mobile communication network, and the first terminal is not connected with the core network equipment;
the capability information of the second terminal in this embodiment includes a mobile ad hoc network bandwidth, a mobile communication network bandwidth, a received signal strength, and a transmitting power.
S302, the first terminal calculates the transmitting path cost value and the receiving path cost value of each second terminal according to the capability information of each second terminal;
the sending path cost value of the second terminal in this step specifically includes: the second terminal generates a first transmitting path cost value in the mobile ad hoc network and a second transmitting cost value in the mobile communication network;
for the transmission path cost value of the second terminals, the first terminal calculates the first transmission path cost value of each second terminal in the mobile ad hoc network and the second transmission cost value of each second terminal in the mobile communication network according to the capability information of each second terminal; and weighting according to preset weights of the first transmission path cost value and the second transmission cost value to obtain the transmission path cost value of each second terminal.
The receiving path cost value of the second terminal includes: each second terminal takes a value at a first reception path of the mobile ad hoc network and takes a value at a second reception path of the mobile communication network.
For the receiving path cost values of the second terminals, the first terminal calculates the first receiving path cost value of each second terminal in the mobile ad hoc network and the second receiving cost value of each second terminal in the mobile communication network according to the capability information of each second terminal; and weighting according to the preset weights of the first receiving path cost value and the second transmitting receiving cost value to obtain the receiving path cost value of each second terminal.
Specifically, the method for calculating the path cost value of the mobile ad hoc network according to the present embodiment may refer to the path cost value calculating method for mesh:
in the first formula, ca is unidirectional air interface time, which is used for measuring the time consumed by a frame when the frame is transmitted on a specific link, and the value of the unidirectional path is the sum of unidirectional air interface time of each hop on the unidirectional path. Oca is the channel access load, op is the MAC protocol load, bt is the number of bits, all three are constants, they depend on the mobile ad hoc network protocol used, and Table 1 gives the specific values of the three quantities under different mobile ad hoc network protocols.
In addition, r in the formula one represents the bit rate at which the mobile ad hoc network node receives or transmits a standard size frame (Bt) under the current condition, and the frame error rate ept is a probability representing the error rate when a standard size frame is transmitted at the bit rate r.
For the bit rate r and the frame error rate ept of the mobile ad hoc network, the first terminal can query a preset table to estimate the bit rate r through the acquired received signal strength of the second terminal and the bandwidth of the mobile ad hoc network, and determine the frame error rate ept corresponding to r according to the bit rate r. According to the calculation process, the first terminal obtains the first transmitting path cost value and the first receiving path cost value of each second terminal in the mobile ad hoc network.
In this embodiment, the calculation of the path cost value of the mobile communication network is similar to the calculation method of the mobile ad hoc network, and the uplink and downlink path cost values of the second terminals are calculated respectively.
The uplink path cost value is obtained by looking up a table according to the received signal strength of each second terminal, the bandwidth of the mobile communication network and the occurrence power, and the transmission path cost value of each second terminal in the mobile communication network is calculated according to a formula by combining the parameter constants of the mobile communication network.
The downlink path cost value is that a downlink rate is obtained according to the received signal strength of each second terminal and the bandwidth lookup of the mobile communication network, and the received path cost value of each second terminal in the mobile communication network is calculated according to a formula I by combining the parameter constant of the mobile communication network.
TABLE 1
| Parameters (parameters) | 802.11a | 802.11b |
| Oca | 75us | 335us |
| Op | 110us | 364us |
| Bt | 8224bit | 8224bit |
It should be noted that, in this embodiment, the transmission path cost of each second terminal is a weighted average of the transmission path cost of the mobile ad hoc network portion and the transmission path cost of the mobile communication network portion, and the reception path cost of each second terminal is a weighted average of the reception path cost of the mobile ad hoc network portion and the reception path cost of the mobile communication network portion. The weights of the mobile ad hoc network part and the mobile communication network part can be adjusted according to practical application, and the default values are all 0.5.
S303, taking the second terminal with the minimum transmission path cost value as a third terminal of a transmission relay node between the first terminal and the core network equipment, and taking the second terminal with the minimum reception path cost value as a third terminal of a reception relay node between the first terminal and the core network equipment.
According to the transmission path cost value and the receiving path cost value of each second terminal obtained by S302, the second terminal with the minimum transmission path cost value is used as a third terminal of a transmission relay node between the first terminal and core network equipment; and taking the second terminal with the minimum receiving path cost value as a third terminal of the receiving relay node between the first terminal and the core network equipment. It can be seen that the third terminal serving as the transmitting relay node and the receiving relay node may be the same terminal or may be different terminals.
Referring to fig. 3, the first terminal 5 determines, according to the calculation result, that the second terminal 2 is both the third terminal that transmits the relay node and the third terminal that receives the relay node; alternatively, the second terminal 2 is determined to be the third terminal transmitting the relay node, and the second terminal 3 is determined to be the third terminal receiving the relay node.
S304, the first terminal sends a relay channel notification message to the core network equipment through a third terminal serving as a sending relay node;
and S305, the first terminal receives a relay channel confirmation message sent by the core network equipment through the third terminal serving as a receiving relay node.
Optionally, after the first terminal receives the relay channel confirmation message sent by the core network device through the third terminal serving as the receiving relay node, when the first terminal resumes connection with the core network device through the mobile communication network, the first terminal sends a relay channel cancellation message to the core network device. After receiving the message of canceling the relay channel, the core network device deletes the dynamic route with the destination address of the first terminal in the route table, and sends a confirmation message of canceling the relay channel to the first terminal.
Optionally, when the first terminal resumes the connection with the mobile communication network core network device, the first terminal sends the current capability information of the first terminal to other terminals in the mobile ad hoc network, where the capability information includes the mobile ad hoc network bandwidth, the mobile communication network bandwidth, the received signal strength, and the transmitting power, so that the other terminals in the mobile ad hoc network can perform relay selection when necessary, and stability of heterogeneous network communication is improved.
According to the heterogeneous network communication method provided by the embodiment, after the first terminal receives capability information sent by each second terminal in the mobile ad hoc network, the sending path cost value and the receiving path cost value of each second terminal are calculated, wherein the sending path cost value is a weighted average value of the first sending path cost value of each second terminal in the mobile ad hoc network and the second sending path cost value of the mobile communication network, the receiving path cost value is a weighted average value of the first receiving path cost value of each second terminal in the mobile ad hoc network and the second receiving path cost value of the mobile communication network, and the second terminal with the minimum sending path cost value and the second terminal with the minimum receiving path cost value are respectively used as a third terminal of a sending relay node and a third terminal of a receiving relay node. The terminal transmission rate of the relay node determined by the method is high, the communication efficiency of the first terminal and the core network equipment is effectively improved, and meanwhile, the communication stability is high.
Fig. 5 is a schematic structural diagram of a heterogeneous network communication device according to an embodiment of the present application, and as shown in fig. 5, a heterogeneous network communication device 40 according to an embodiment of the present application includes:
a receiving module 41, configured to receive capability information sent by at least one second terminal; the method comprises the steps that a first terminal and at least one second terminal are in the same mobile ad hoc network, at least one second terminal is located in a mobile communication network, the second terminal is connected with core network equipment in the mobile communication network, and the first terminal is not connected with the core network equipment;
a relay confirmation module 42, configured to determine, from among the at least one second terminal, a third terminal that is a relay node between the first terminal and the core network device, according to capability information of each of the second terminals;
a sending module 43, configured to send, by using the third terminal, a relay channel notification message to the core network device, where the relay channel notification message is used to instruct the core network device to communicate with the first terminal through the third terminal;
the receiving module 41 is further configured to receive, through the third terminal, a relay channel acknowledgement message sent by the core network device.
Optionally, the relay node includes a transmitting relay node and a receiving relay node;
the sending module 43 is further configured to send a relay channel notification message to the core network device through a third terminal that is a sending relay node;
the receiving module 41 is further configured to receive, by using a third terminal that is a receiving relay node, a relay channel acknowledgement message sent by the core network device.
Fig. 6 is a schematic structural diagram of a heterogeneous network communication device according to another embodiment of the present application, and further, based on the embodiment of the device shown in fig. 5, optionally, the heterogeneous network communication device 40 further includes:
a calculating module 44, configured to calculate a transmit path cost value and a receive path cost value of each of the second terminals according to capability information of each of the second terminals;
the confirmation module 42 is further configured to use the second terminal with the minimum transmission path cost value as a third terminal of the transmission relay node between the first terminal and the core network device, and use the second terminal with the minimum reception path cost value as a third terminal of the reception relay node between the first terminal and the core network device.
Optionally, the calculating module 44 is further configured to calculate a first transmission path cost value of each of the second terminals in the mobile ad hoc network and a second transmission cost value of each of the second terminals in the mobile communication network according to the capability information of each of the second terminals;
and weighting according to the first transmission path cost value and the second transmission cost value to obtain the transmission path cost value of each second terminal.
Optionally, the calculating module 44 is further configured to calculate a first receiving path cost value of each of the second terminals in the mobile ad hoc network and a second receiving cost value of each of the second terminals in the mobile communication network according to the capability information of each of the second terminals;
and weighting according to the first receiving path cost value and the second receiving cost value to obtain the receiving path cost value of each second terminal.
Optionally, the capability information of the second terminal includes a mobile ad hoc network bandwidth, a mobile communication network bandwidth, a received signal strength, and a transmitting power.
Optionally, the sending module 43 is further configured to send a relay channel cancellation message to the core network device when the first terminal resumes connection with the core network device through the mobile communication network;
the receiving module 41 is further configured to receive a confirmation message of cancellation of the relay channel sent by the core network device.
The heterogeneous network communication device provided by any of the above embodiments of the present application may implement the technical solution of the above method embodiment, and its implementation principle and technical effects are similar, and this embodiment will not be repeated here.
The present embodiment provides a computer readable storage medium, on which a computer program is stored, where the computer program when executed by a processor implements a technical solution as described in any one of the foregoing method embodiments, and the implementation principle and technical effect are similar, and are not repeated herein.
Fig. 7 is a schematic structural diagram of a heterogeneous network communication device according to an embodiment of the present application, as shown in fig. 7, where the heterogeneous network communication device according to the present embodiment includes:
a processor 51; and
a memory 52 for storing executable instructions of the processor;
the processor is configured to execute the technical solution described in any one of the foregoing method embodiments by executing the executable instruction, and its implementation principle and technical effects are similar, and are not described herein again.
Alternatively, the memory 52 may be separate or integrated with the processor 51.
When the memory 52 is a device separate from the processor 51, the heterogeneous network communication apparatus may further include:
a bus 53 for connecting the memory 52 and the processor 51.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The foregoing program may be stored in a computer readable storage medium. The program, when executed, performs steps including the method embodiments described above; and the aforementioned storage medium includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (9)
1. A heterogeneous network communication method, comprising:
the first terminal receives capability information sent by at least two second terminals; the first terminal and at least two second terminals are in the same mobile ad hoc network, the at least two second terminals are located in a mobile communication network, the second terminals are connected with core network equipment in the mobile communication network, and the first terminal is not connected with the core network equipment;
the first terminal determines a third terminal serving as a relay node between the first terminal and the core network equipment in the at least one second terminal according to the capability information of each second terminal;
the first terminal sends a relay channel notification message to the core network device through the third terminal, wherein the relay channel notification message is used for indicating the core network device to communicate with the first terminal through the third terminal;
the first terminal receives a relay channel confirmation message sent by the core network device through the third terminal;
the first terminal determines a third terminal serving as a relay node between the first terminal and the core network device in the at least one second terminal according to the capability information of each second terminal, and the method comprises the following steps:
the first terminal calculates the transmitting path cost value and the receiving path cost value of each second terminal according to the capability information of each second terminal;
and taking the second terminal with the minimum transmission path cost value as a third terminal of the transmission relay node between the first terminal and the core network equipment, and taking the second terminal with the minimum reception path cost value as a third terminal of the reception relay node between the first terminal and the core network equipment.
2. The method of claim 1, wherein the relay node comprises a transmitting relay node and a receiving relay node; the first terminal sends a relay channel notification message to the core network device through the third terminal, including:
the first terminal sends a relay channel notification message to the core network equipment through a third terminal serving as a sending relay node;
the first terminal receives a relay channel confirmation message sent by the core network device through the third terminal, and the relay channel confirmation message comprises:
and the first terminal receives the relay channel confirmation message sent by the core network equipment through a third terminal serving as a receiving relay node.
3. The method of claim 1, wherein the first terminal calculates a transmission path cost value of each of the second terminals based on capability information of each of the second terminals, comprising:
the first terminal calculates the first transmitting path cost value of each second terminal in the mobile ad hoc network and the second transmitting cost value of each second terminal in the mobile communication network according to the capability information of each second terminal;
and the first terminal weights according to the first transmission path cost value and the second transmission cost value to obtain the transmission path cost value of each second terminal.
4. The method of claim 1, wherein the first terminal calculates a reception path cost value for each of the second terminals based on the capability information of each of the second terminals, comprising:
the first terminal calculates the first receiving path cost value of each second terminal in the mobile ad hoc network and the second receiving cost value of each second terminal in the mobile communication network according to the capability information of each second terminal;
and the first terminal weights the first receiving path cost value and the second receiving cost value to obtain the receiving path cost value of each second terminal.
5. The method according to any of claims 1-4, wherein the capability information of the second terminal comprises mobile ad hoc network bandwidth, mobile communication network bandwidth, received signal strength, transmit power.
6. The method according to claim 1, wherein after the first terminal receives the relay channel confirmation message sent by the core network device through the third terminal, the method further comprises:
when the first terminal resumes connection with the core network device through the mobile communication network, the first terminal sends a relay channel cancellation message to the core network device;
and the first terminal receives a confirmation message of the cancellation of the relay channel sent by the core network equipment.
7. A heterogeneous network communication device, comprising:
the receiving module is used for receiving the capability information sent by the at least one second terminal; the first terminal and at least two second terminals are in the same mobile ad hoc network, the at least two second terminals are located in a mobile communication network, the second terminals are connected with core network equipment in the mobile communication network, and the first terminal is not connected with the core network equipment;
a relay determining module, configured to determine, from among the at least one second terminal, a third terminal that is a relay node between the first terminal and the core network device, according to capability information of each of the second terminals;
a sending module, configured to send, by using the third terminal, a relay channel notification message to the core network device, where the relay channel notification message is used to instruct the core network device to communicate with the first terminal through the third terminal;
the receiving module is further configured to receive, through the third terminal, a relay channel acknowledgement message sent by the core network device;
the relay determining module is specifically configured to:
the first terminal calculates the transmitting path cost value and the receiving path cost value of each second terminal according to the capability information of each second terminal;
and taking the second terminal with the minimum transmission path cost value as a third terminal of the transmission relay node between the first terminal and the core network equipment, and taking the second terminal with the minimum reception path cost value as a third terminal of the reception relay node between the first terminal and the core network equipment.
8. A computer readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the method of any of claims 1-6.
9. A heterogeneous network communication device, comprising:
a processor; and
a memory for storing executable instructions of the processor;
wherein the processor is configured to perform the method of any of claims 1-6 via execution of the executable instructions.
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