WO2024060930A1 - Communication method and apparatus, and electronic device and computer-readable storage medium - Google Patents

Abstract

A communication method, a communication apparatus, an electronic device, and a computer-readable storage medium. The communication method is applied to a control node in an ad hoc network. The communication method comprises: receiving a radio access request, which is provided by a first terminal device, wherein the radio access request is used for requesting to access an ad hoc network; and in response to allowing the first terminal device to access the ad hoc network, allocating to the first terminal device a first network address for communication in the ad hoc network, such that the first terminal device accesses the ad hoc network, and performs communication in the ad hoc network by using the first network address. In the method, an ad hoc network can be established by using a control node, therefore internal intercommunication can be performed by means of the ad hoc network even in a scenario where there is no communication infrastructure, and once a device in the ad hoc network has a basic communication capacity, the other devices in the ad hoc network can also implement intercommunication with the outside by means of the device.

Description

Communication methods, devices, electronic equipment and computer-readable storage media

This application claims priority from Chinese Patent Application No. 202211144154.9 submitted on September 20, 2022. The disclosure of the above Chinese patent application is hereby cited in its entirety as part of this application.

Technical field

Embodiments of the present disclosure relate to a communication method, device, electronic device, and computer-readable storage medium.

Background technique

With the rapid development of handheld terminals and the improvement of intelligence in automobiles, the communication capabilities of mobile terminals, vehicle systems and other devices are getting stronger and stronger. Currently, for example, communication between a car user's handheld terminal and the car's own on-board system mainly occurs through a public communication network.

Contents of the invention

At least one embodiment of the present disclosure provides a communication method applied to a control node in an ad hoc network. The method includes: receiving a wireless access request provided by a first terminal device, wherein the wireless access request is used to request accessing the ad hoc network; and in response to allowing the first terminal device to access the ad hoc network, allocating a first network address for communicating in the ad hoc network to the first terminal device, The first terminal device is caused to access the ad hoc network and communicate in the ad hoc network using the first network address.

For example, in the communication method provided by an embodiment of the present disclosure, the ad hoc network includes a wireless local area network established using unlicensed spectrum.

For example, in the communication method provided by an embodiment of the present disclosure, in response to allowing the first terminal device to access the ad hoc network, allocating the first terminal device for communication in the ad hoc network The first network address includes: in response to allowing the first terminal device to access the ad hoc network, determining the device type of the first terminal device; in response to the first terminal device being the control node The slave node allocates a first type network address to the first terminal device; in response to the first terminal device being another control node, allocates a second type network address to the first terminal device.

For example, in the communication method provided by an embodiment of the present disclosure, the first type of network address includes a Class C network address, and the second type of network address includes a Class B network address.

For example, the communication method provided by an embodiment of the present disclosure further includes, in response to the first terminal device being another control node, determining whether the first terminal device has external network service capabilities; in response to the first terminal device being another control node, The terminal device has external network service capabilities, and the first terminal device is marked as a gateway.

For example, the communication method provided by an embodiment of the present disclosure further includes broadcasting the first network address of the first terminal device after the first terminal device accesses the ad hoc network.

For example, the communication method provided by an embodiment of the present disclosure further includes setting a keep-alive timer for the first terminal device; in response to receiving a detection message from the first terminal device, resetting the keep-alive timer is the maximum value; in response to the fact that the keep-alive timer count is 0 due to the fact that no detection message from the first terminal device has been received, offline processing of the first terminal device is started.

For example, in the communication method provided in one embodiment of the present disclosure, it also includes: in response to receiving a second network address broadcast by a second terminal device in the self-organizing network, recording and displaying the second network address in a list of serviceable objects; in response to a selection operation on the second network address, providing a first access request to the second terminal device.

For example, in the communication method provided by an embodiment of the present disclosure, the terminal device recorded in the serviceable object list regularly sends broadcast messages to the control node; in response to not receiving the record in the serviceable object list within a preset time, broadcast message provided by the third terminal device, and delete the third terminal device from the serviceable object list.

For example, the communication method provided by an embodiment of the present disclosure further includes: broadcasting the identity information of the control node, where the identity information includes the network address of the control node.

For example, in the communication method provided by an embodiment of the present disclosure, the identity information also includes gateway indication information, and the gateway indication information is used to indicate that the control node has external network service capabilities so that the ad hoc network can The node sets this control node as a gateway.

For example, in the communication method provided by an embodiment of the present disclosure, it further includes: in response to the control node establishing a communication connection with the external network server, broadcasting the external network address of the external network server, so that the ad hoc network The node adds the external network address to its own serviceable object list.

For example, in a communication method provided by an embodiment of the present disclosure, the control node establishes a communication connection with an external network server. The method further includes: receiving a second access request; obtaining the access network address in the second access request; and responding When the accessed network address is the external network address, forward the second access request to the external network server; in response to the accessed network address being the target network address of the target node in the ad hoc network, forward the second access request to the external network server. The target node forwards the second access request.

For example, in the communication method provided by an embodiment of the present disclosure, the second access request comes from the first node in the ad hoc network, the external network server establishes a communication connection with the mobile terminal, and the method further includes: responding to The access network address is the network address of the mobile terminal, and the second access request is sent to the external network server to forward the second access request to the mobile terminal through the external network server; and The response message from the external network server is forwarded to the first node, where the response message is provided by the mobile terminal to the external network server.

For example, in a communication method provided in an embodiment of the present disclosure, the external network server acts as a proxy server to establish a communication connection with the mobile terminal.

For example, in the communication method provided by an embodiment of the present disclosure, the proxy server further includes an agent for the SMS service of the operator channel, and the SMS is sent to the mobile terminal through the proxy server.

For example, in the communication method provided by an embodiment of the present disclosure, in addition to the control node establishing a communication connection with the external network server, at least one second node in the ad hoc network establishes a communication connection with the external network server. Communication connection, the ad hoc network selects a communication node for communicating with the external network server from the at least one second node and the control node in a polling manner, and receives the second access request, including: In response to the communication node being the control node, the second access request is received.

For example, in a communication method provided by an embodiment of the present disclosure, the arrangement order of the control node and the at least one second node in polling is periodically changed.

For example, in the communication method provided by an embodiment of the present disclosure, communicating with the external network server includes using a mobile cellular network and/or a satellite network to communicate with the external network server.

For example, in the communication method provided by an embodiment of the present disclosure, when it is possible to communicate with an external network server, the nodes that use the mobile cellular network to communicate with the external network server are ranked in the polling order between those using the satellite network and the external network server. The external network server communicates in front of the node.

At least one embodiment of the present disclosure provides a communication device applied to a control node in an ad hoc network. The device includes: a receiving unit configured to receive a wireless access request provided by a first terminal device, Wherein, the wireless access request is used to request access to the ad hoc network; and the address allocation unit is configured to respond to allowing the first terminal device to access the ad hoc network. Allocate a first network address for communication in the ad hoc network, so that the first terminal device accesses the ad hoc network and uses the first network address to communicate in the ad hoc network.

At least one embodiment of the present disclosure provides an electronic device including a processor; a memory including one or more computer program modules; wherein the one or more computer program modules are stored in the memory and configured to The processor executes, and the one or more computer program modules include instructions for implementing the communication method provided by any embodiment of the present disclosure.

At least one embodiment of the present disclosure provides a computer-readable storage medium for storing non-transitory computer-readable instructions. When the non-transitory computer-readable instructions are executed by a computer, the methods provided by any embodiment of the present disclosure can be implemented. Communication methods.

Description of drawings

In order to illustrate the embodiments of the present disclosure more clearly, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure and do not limit the present disclosure.

Figure 1A shows a flow chart of a communication method provided by at least one embodiment of the present disclosure;

1B shows a schematic diagram of an ad hoc network established using the communication method provided by the present disclosure provided by at least one embodiment of the present disclosure;

Figure 2 shows a flow chart of a method for a control node to be accessed to access a target control node provided by at least one embodiment of the present disclosure;

Figure 3 shows a flow chart of a method for accessing a control node from a slave node according to at least one embodiment of the present disclosure;

Figure 4A shows a flow chart of another communication method provided by some embodiments of the present disclosure;

FIG4B shows a flow chart of another communication method provided by some embodiments of the present disclosure;

Figure 5 shows a flow chart of a communication method between devices in an ad hoc network provided by at least one embodiment of the present disclosure;

Figure 6A shows a flow chart of another communication method provided by at least one embodiment of the present disclosure;

Figure 6B shows a flow chart of another communication method provided by at least one embodiment of the present disclosure;

Figure 7 shows a schematic block diagram of a communication device provided by at least one embodiment of the present disclosure;

Figure 8A shows a schematic block diagram of an electronic device provided by at least one embodiment of the present disclosure;

8B shows a schematic block diagram of another electronic device provided by at least one embodiment of the present disclosure; and

Figure 9 shows a schematic diagram of a computer-readable storage medium provided by at least one embodiment of the present disclosure.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present disclosure.

Unless otherwise defined, technical terms or scientific terms used in this disclosure shall have the usual meaning understood by a person with ordinary skill in the art to which this disclosure belongs. "First", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Likewise, similar words such as "a", "an" or "the" do not indicate a quantitative limitation but rather indicate the presence of at least one. Words such as "include" or "comprising" mean that the elements or things appearing before the word include the elements or things listed after the word and their equivalents, without excluding other elements or things. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to express relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

At present, the communication connection between the vehicle system and the mobile terminal is generally established using point-to-point (P2P) method, mainly to complete the function of wireless sharing of data (such as Bluetooth music, screen projection, etc.) between the two, which belongs to PAN (Personal Domain). Business within the scope of the Internet). There are no direct wireless transmission links between multiple PANs. If data sharing is required, it can only be achieved in disguise through expensive public networks. In some special scenarios, such as traveling in groups to remote areas and entering areas without public network services, inter-PAN communication will not be possible, which means loss of connection for those devices without external network service capabilities, which will cause problems for the entire Team safety poses a risk.

At least one embodiment of the present disclosure provides a communication method, apparatus, electronic device, and computer-readable storage medium. This communication method is applied to control nodes in ad hoc networks. The method includes: receiving a wireless access request provided by a first terminal device, the wireless access request being used to request access to an ad hoc network; and in response to allowing the first terminal device to access the ad hoc network, allocating a username to the first terminal device. Based on the first network address for communication in the ad hoc network, the first terminal device is allowed to access the ad hoc network and communicate in the ad hoc network using the first network address. The communication method establishes an ad hoc network based on control nodes, so that even in a scenario without communication infrastructure, internal intercommunication can be carried out through the ad hoc network, and further, for example, in at least one example, once a network within the ad hoc network When the device has basic communication capabilities, other devices in the ad hoc network can also communicate with the outside through the device.

FIG. 1A shows a flowchart of a communication method provided by at least one embodiment of the present disclosure.

As shown in Figure 1A, the method may include steps S10 to S20. This method is applied to control nodes in ad hoc networks.

Step S10: Receive a wireless access request provided by the first terminal device, where the wireless access request is used to request access to the ad hoc network.

Step S20: In response to allowing the first terminal device to access the ad hoc network, allocate a first network address for communicating in the ad hoc network to the first terminal device, so that the first terminal device accesses the ad hoc network and utilizes the first A network address communicates in an ad hoc network.

In some embodiments of the present disclosure, one or more terminal devices in the ad hoc network may have both functions of router and host. As a host, the terminal device needs to run various user-oriented applications, such as editors, browsers, etc. As a router, the terminal device needs to run the corresponding routing protocol and complete the forwarding and routing maintenance of data packets according to the routing policy and routing table. Therefore, the terminal device in the ad hoc network needs to implement a suitable routing protocol. Ad hoc networks can utilize the routing and forwarding functions of terminal devices to communicate without infrastructure, thus making up for the shortcomings of unavailable network communication infrastructure. In embodiments of the present disclosure, the ad hoc network may be a wireless ad hoc network. The wireless ad hoc network is a system composed of a group of movable nodes with wireless transceiver modules. It does not rely on preset infrastructure. , which has the characteristics of temporary networking, rapid deployment, no control center, and strong invulnerability.

In some embodiments of the present disclosure, the control node may be, for example, a device with strong network capabilities. The control node, as a parent node, establishes a wireless link with its slave node. The control node may also establish a wireless link with other surrounding control nodes. In some embodiments of the present disclosure, the control node completes the routing and forwarding function of data.

For example, the control node may be a vehicle system device with strong network capabilities, and the slave node of the control node may be a mobile phone, tablet, headset, etc. that establishes a communication connection with the vehicle system device.

For example, the control node may be a mobile phone with strong network capabilities, and the slave nodes of the control node may be a car computer, a tablet, a headset, etc. that establishes a communication connection with the mobile phone.

In some embodiments of the present disclosure, network capabilities may be set to be evaluated based on whether a network connection can be established. For example, in the absence of a cellular mobile network, a device that can establish a satellite communication network connection has stronger network capabilities than other devices. ; When there is a certain cellular mobile network, you can set it to network speed, delay, etc. to evaluate the network capabilities of different devices; when there are both cellular mobile networks and satellite communication networks, you can set it to network speed, delay, etc. Evaluate the network capabilities of different devices.

Although not explicitly described, limitations such as battery life can also be taken into consideration when evaluating which ones are suitable as control nodes. For example, when having similar network capabilities, cars are more suitable as control nodes than mobile phones, tablets, and other wearable devices.

In some embodiments of the present disclosure, the control node may be determined based on its own capabilities when the device accesses the network. For example, if a certain device allows other devices to establish connections with itself, and the communication capability of the device is stronger than that of at least some other devices, the device can serve as a control node.

In embodiments of the present disclosure, the control node may serve as a wireless access point (AP), the creator of a wireless network, and the central node of the wireless network.

FIG1B shows a schematic diagram of an ad hoc network established by applying the communication method provided by the present disclosure, provided by at least one embodiment of the present disclosure.

As shown in Figure 1B, the ad hoc network includes multiple nodes. These multiple nodes further include at least one control node and at least one slave node. The slave node may be called an "STA" node, which is a terminal in the wireless network. For example, control node AP1, control node AP2, control node AP3 and control node AP4. Node STA11 and node STA12 access the control node AP1 and serve as slave nodes of the control node AP1. Node STA21, node STA22 and node STA23 access the control node AP2 and serve as slave nodes of the control node AP2. Node STA31 accesses the control node AP3 and serves as a slave node of the control node AP3. Currently, there is no slave node that is connected to the control node AP4. Control nodes AP1 ~ AP4 establish communication connections between any two nodes.

In the embodiment of the present disclosure, the slave node refers to a mobile terminal with weak network capabilities or does not have the ability to allow other devices to access. It only establishes a wireless link with the parent AP and communicates with other terminals in the network. The letter is relayed by the parent AP. The networking capabilities of the slave nodes are weaker than those of the control nodes.

Each AP broadcasts beacon frames to surrounding STAs and APs at certain intervals (ranging from tens of milliseconds to several seconds) to tell surrounding STAs and other APs that it can access it.

In addition to monitoring beacon frames sent by surrounding APs, each STA (such as mobile phones, notebooks, etc.) can also actively send probe frames to find APs that can be accessed.

It should be understood that the ad hoc network shown in FIG. 1B is only an example to facilitate understanding of the present invention and has no limiting effect on the present disclosure. For example, the number of control nodes can be arbitrary and is not limited to four, and the number of access control nodes can also be arbitrary.

For example, any control node in the ad hoc network shown in FIG. 1B can apply the communication method provided by the embodiment of the present disclosure. The following uses the control node AP1 as an example to illustrate embodiments of the present disclosure.

The slave nodes STA11, STA12, and the control nodes AP2 to AP4 can all access the control node AP1 using the communication method shown in Figure 1A, thereby accessing the ad hoc network based on the control node AP1.

For step S10, the first terminal device may be any device with wireless communication capabilities. For example, the first terminal device may be a device including, but not limited to, a wireless communication module including a Wi-Fi module, a Bluetooth (BT) module, a uwb module, a zigbee module, and the like. For example, the first terminal device may be a mobile phone, a tablet computer, a wearable device, a vehicle-mounted device, an augmented reality (AR)/virtual reality (VR) device, a notebook computer, or an ultra-mobile personal computer (Ultra-mobile). personal computer (UMPC), netbook, personal digital assistant (personal digital assistant, PDA) and other devices with wireless communication modules. The embodiments of this application do not place any restrictions on the specific types of terminal devices.

For example, the first terminal device may be a station (ST) in WLAN, and may be a cellular phone, a cordless phone, a session initiation protocol (Session Initiation Protocol, SIP) phone, or a wireless local loop (Wireless Local Loop, WLL) station. , Personal Digital Assistant (PDA) device, handheld device with wireless communication module, computing device or other processing device connected to wireless communication module, computer, laptop computer, handheld communication device, handheld Computing devices, and/or other devices for communicating on wireless systems, and next-generation communication systems, such as mobile terminals in 5G networks and mobile terminals in future evolved Public Land Mobile Networks (PLMN) Or mobile terminals in future evolved non-terrestrial networks (Non-terrestrial Network, NTN), etc.

As an example and not a limitation, when the first terminal device is a wearable device, the wearable device may also be a general term for devices that apply wearable technology to intelligently design daily wear and develop wearable devices, such as configured with Near field communication modules for gloves, watches, etc. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly defined wearable smart devices include full-featured, large-sized devices that can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, and those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones. , such as various types of smart watches and smart bracelets with display screens.

For example, the first terminal device may be a terminal device serving as a slave node, or the first terminal device may be a terminal device serving as another control node. For example, the first terminal device may be one of the slave nodes STA11, STA12, and control nodes AP2 to AP4 in FIG. 1B.

Wireless communication modules such as Wi-Fi modules, BT modules, uwb modules, and zigbee modules support communication in unlicensed frequency bands. Therefore, in some embodiments of the present disclosure, ad hoc networks include those established using unlicensed spectrum. Wireless LAN. Using unlicensed spectrum to establish wireless LANs can reduce communication costs and improve communication flexibility without being restricted by external conditions. Unlicensed spectrum may be, for example, the 2.4GHz, 5GHz, 6GHz and 60GHz frequency bands. The unlicensed frequency band has the characteristics of sharing without permission, provides best-effort services in the form of competition for spectrum, and is used in accordance with the principles of channel access fairness and the coexistence of multiple wireless communication technologies.

In some embodiments of the present disclosure, the wireless access request may include, for example, a probe request and an authentication request.

For example, the first terminal device broadcasts a detection request to the control node AP1, and the control node AP1 responds to receiving the detection request by sending a detection response to the first terminal device. In response to receiving the detection response, the first terminal device sends an authentication request to the control node AP1, so that the control node AP1 determines whether to allow the first terminal device to access based on the authentication request.

For example, if the first terminal device has a Wi-Fi module, the first terminal device sends a detection request and an authentication request to the control node AP1 through the Wi-Fi module. For another example, if the first terminal device has a zigbee module, the first terminal device sends a detection request and an authentication request to the control node AP1 through the zigbee module.

For example, a probe request includes a probe frame to find an accessible AP. Originator of probe request is the first terminal device.

In some embodiments of the present disclosure, the wireless access request may be generated in response to receiving a beacon frame sent by the control node.

For example, the control node broadcasts beacon frames to surrounding STAs and APs at certain intervals, telling the surrounding STAs and other APs that it can access, so that the first terminal device requests access to the AP.

In some embodiments of the present disclosure, for example, the control node AP1 responds to receiving the authentication request, and displays an interactive interface on the terminal device of the control node AP1. The interactive interface displays, for example, a list including the control node AP1. For example, it may also include Text prompt information such as "Whether to access" allows the user to operate on the interactive interface whether to allow access to the control node AP1. In this embodiment, the operating system of the terminal device as the control node AP1 can be android, linux, windows, etc., and the driver with the corresponding communication module can trigger the display of the interactive interface, and the terminal device has a touch screen (or screen + buttons) and other peripherals.

For another example, the authentication request may carry the identity information of the first terminal device, and the control node AP1 determines whether to allow the first terminal device to access based on the identity information in the authentication request. For example, the control node AP1 includes an access device list, and if the identity of the first terminal device appears in the device list, the first terminal device is allowed to access.

For example, users can set the device list in the control node to add their own devices to the device list to prevent too many users from occupying network resources.

In some embodiments of the present disclosure, if the first terminal device provides a wireless access request to the control node AP1 for the first time, and the control node AP1 confirms that the first terminal device is allowed to access the self-organizing network according to the method described in the above embodiment, the control node AP1 generates a random key and provides the key to the first terminal device through a response message.

If the first terminal device has ever accessed the ad hoc network, the authentication request provided by the first terminal device carries the key. In response to receiving the authentication request, the control node AP1 determines whether the key carried in the authentication request is correct. If the key is correct, it is confirmed that the first terminal device is allowed to access the ad hoc network. If the key is incorrect, it is confirmed that the first terminal device is not allowed to access the ad hoc network.

For step S20, for example, in response to allowing the first terminal device to access the ad hoc network, a response message is sent to the first terminal device.

In response to receiving the response message, the first terminal device sends an association request to the control node AP1. In the case where the first terminal device is not connected to the ad hoc network, the control node AP1 responds to the association request Apply to a Dynamic Host Configuration Protocol (Dynamic Host Configuration Protocol, DHCP) service module to allocate a network address (for example, a first network address) to the first terminal device. For example, the network address assigned by the control node AP1 to the first terminal device is the IP address: 192.168.*.0. For example, the DHCP service module is integrated in the control node, or the DHCP service module can also be a device independent of the control node.

In some embodiments of the present disclosure, after the control node AP1 allocates a network address to the first terminal device, the control node sends an association response to the first terminal device, the association response includes the network address of the first terminal device, and the control node updates own routing table. After receiving the association response, the first terminal device updates its own routing table, so that the first terminal device accesses the ad hoc network and uses the first network address to communicate in the ad hoc network.

In some embodiments of the present disclosure, step S20 includes: in response to allowing the first terminal device to access the ad hoc network, determining the device type of the first terminal device; in response to the first terminal device being a slave node of the control node, determining the device type of the first terminal device. A terminal device allocates a first type network address; in response to the first terminal device being another control node, allocating a second type network address to the first terminal device.

In some embodiments of the present disclosure, for example, the association request is divided into an AP access request and a non-AP access request according to whether the first terminal device can serve as a control node. If the association request is an AP access request and the device type of the first terminal device is another control node, the second type network address is allocated to the first terminal device. If the association request is a non-AP access request and the device type of the first terminal device is a slave node, the first terminal device is assigned a first-class network address.

In some embodiments of the present disclosure, the first type of network address includes a Class C network address and the second type of network address includes a Class B network address.

The address range of Class B network is: 128.1.0.1-191.255.255.254; the address range of Class C network is: 192.0.1.1-223.255.255.254. A Class B IP address consists of a 2-byte network address and a 2-byte host address. The highest bit of the network address must be "10", that is, the first number ranges from 128 to 191. There are 16,256 Class B addresses on the Internet. A Class C address consists of a 3-byte network address and a 1-byte host address. The highest bit of the network address must be "ll0", that is, the first number ranges from 192 to 223. There are 2,054,512 Class C addresses on the Internet. That is, the number of Class C network addresses is greater than the number of Class B network addresses. Since the number of control nodes in an ad hoc network is less than the number of slave nodes in an ad hoc network, class B network addresses are assigned to control nodes and class C network nodes are assigned to slave nodes.

Assign a network address to the device according to whether it is a slave node or a control node, so as to facilitate identification of the device.

In some embodiments of the present disclosure, as shown in FIG. 1A , the communication method may further include step S30 and step S40.

Step S30: In response to the first terminal device being another control node, determine whether the first terminal device has external network service capabilities.

Step S40: In response to the first terminal device having external network service capabilities, mark the first terminal device as a gateway.

In this embodiment, if the first terminal device itself has the external network service capability, the first terminal device is marked as a gateway so that any terminal device in the ad hoc network can communicate with the outside through the gateway.

In the embodiment of the present disclosure, an AP with external network service capabilities is called a wireless gateway (Mobile Access Portal, mAP). mAP allows other nodes in the ad hoc network to communicate with the external network through mAP. For example, when the AP enters the network or during the networking process, it can be set according to the free will or the administrator's will to allow it to serve as an external network proxy. If it is allowed, it means that the AP can be used as a mAP and can be used as the default gateway for other terminals in the network. .

In some embodiments of the present disclosure, the external network service capability may refer to the ability to communicate with external servers outside the ad hoc network.

For example, the association request sent by the first terminal device to the control node includes information indicating whether the first terminal device has external network service capabilities. That is, the association request includes identity information indicating whether the first terminal device can serve as a mAP.

If the first terminal device can serve as a mAP, the control node can mark the first terminal device as a gateway.

In some embodiments of the present disclosure, after the first terminal device accesses the ad hoc network, the first network address of the first terminal device is broadcast. For example, the control node broadcasts the first network address spontaneously, or the first terminal device broadcasts its own first network address, and the control node unconditionally forwards the first network address in response to the first terminal device broadcasting the first network address.

Figure 2 shows a flow chart of a method for a control node to be accessed to access a target control node provided by at least one embodiment of the present disclosure.

As shown in Figure 2, the method includes steps S201-209. For example, the control node to be accessed (hereinafter referred to as the "AP to be accessed") is the control node AP4 in Figure 1B, and the target control node (hereinafter referred to as the "target AP") (labeled "AP") is the control node AP1.

Step S201: The AP to be accessed sends a detection request to the target AP. Probe requests are used to scan the communication area for the presence of connected networks. Probe requests include probe frames to find accessible APs.

Step S202: The target AP sends a detection response to the AP to be accessed. For example, the target AP sends a probe response to the AP to be accessed in response to the probe request.

Step S203: The AP to be accessed sends an authentication request to the target AP.

If the AP to be accessed has previously accessed the target AP, the authentication request carries the key assigned to the AP to be accessed during the first access. In this case, step S204 includes the target AP checking whether the key in the authentication request is correct. If the key is correct, step S205 is executed, that is, the authentication response is fed back to the AP to be accessed.

If the AP to be accessed requests access to the ad hoc network for the first time, and the target AP receives an indication from the user that access is allowed, step S204 includes the target AP generating a random key, and step S205 includes feeding back an authentication response to the AP to be accessed, the authentication response including the random key, so that the AP to be accessed can access with the key the next time it accesses, thereby avoiding wasting time and resources on reallocating keys to the AP to be accessed again.

Step S206: The AP to be accessed sends an association request to the target AP. The association request includes indication information that the device type is AP. For example, the association request includes the indicator AP=T, and AP=T indicates that the device requesting access is an AP.

If the AP to be accessed has previously accessed the ad hoc network, the association request also includes the network address of the AP to be accessed, that is, the IP address.

Step S207: If the association request includes the IP address (that is, this access is the first access), the target AP updates its own routing table. For example, add the IP address of the AP to be accessed in its own routing table.

If the association request does not include an IP address (that is, the AP to be accessed is connected to the ad hoc network for the first time), the target AP applies to the DHCP service module to assign a Class B IP address to the AP to be accessed, and updates its own routing table.

Step S208: The target AP sends an association response to the AP to be accessed. For example, the association response includes the IP address of the target AP. If the AP to be accessed is accessing the ad hoc network for the first time, the association response also includes the network address assigned by the target AP to the AP to be accessed.

Step S209: The AP to be accessed updates its own routing table. For example, register your own IP address and add the network address of the target AP.

Afterwards, the AP to be connected can use its own IP address to communicate with other nodes in the ad hoc network.

Figure 3 shows a flow chart of a method for accessing a control node from a slave node according to at least one embodiment of the present disclosure.

As shown in Fig. 3, the method includes steps S301 to 309. For example, the slave node to be accessed (hereinafter referred to as "STA to be accessed") is the slave node STA11 in Fig. 1B, and the target control node (hereinafter referred to as "target AP") is the control node AP1.

Step S301: The STA to be accessed sends a detection request to the target AP. Probe requests are used to scan the communication area for the presence of connected networks.

Step S302: The target AP sends a detection response to the STA to be accessed. For example, the target AP sends a probe response to the STA to be accessed in response to the probe request.

Step S303: The STA to be accessed sends an authentication request to the target AP.

If the STA to be accessed has previously accessed the ad hoc network, the authentication request carries the key assigned to the STA to be accessed during the first access. In this case, step S304 includes the target AP checking whether the key in the authentication request is correct. If the key is correct, step S205 is executed, that is, the authentication response is fed back to the STA to be accessed.

If the STA to be accessed requests access to the ad hoc network for the first time, and the target AP receives an instruction input by the user to allow access, step S204 includes the target AP generating a random key, and step S205 includes feedback to the STA to be accessed. Authentication response. The authentication response includes the random key so that the STA to be accessed can use this key to access the STA next time to avoid wasting time and resources by redistributing the key to the STA to be accessed again.

Step S306: The STA to be accessed sends an association request to the target AP. The association request includes indication information that the device type is non-AP to indicate that the device type is STA. For example, the association request includes the indicator AP=F, and AP=F indicates that the device requesting access is an STA.

If the STA to be accessed has previously accessed the ad hoc network (that is, this access is not the first access), the association request also includes the network address of the STA to be accessed, that is, the IP address.

Step S307: If the association request includes the IP address, the target AP updates its own routing table. For example, add the IP address of the STA to be connected to its own routing table.

If the association request does not include an IP address (that is, the STA to be accessed is connected to the ad hoc network for the first time), the target AP applies to the DHCP service module to assign a Class C IP address to the AP to be accessed, and updates its own routing table.

Step S308: The target AP sends an association response to the STA to be accessed. For example, the association response includes the IP address of the target AP. If the STA to be accessed is accessing the ad hoc network for the first time, the association response also includes the network address assigned by the target AP to the STA to be accessed.

Step S309: The STA to be accessed updates its own routing table. For example, register your own IP address and add the network address of the target AP.

Afterwards, the STA to be connected can use its own IP address to communicate with other nodes in the ad hoc network.

Figure 4A shows a flowchart of another communication method provided by some embodiments of the present disclosure.

As shown in Figure 4A, the method may also include steps S401 to S403 in addition to the foregoing steps. Steps S401 to S403 may be executed after the first terminal device accesses the ad hoc network. For example, it is executed after step S20.

Step S401: Set a keep-alive timer for the first terminal device.

Step S402: In response to receiving the detection message from the first terminal device, reset the keep-alive timer to the maximum value.

Step S403: In response to the fact that the keep-alive timer count reaches 0 because the detection message of the first terminal device has not been received, start offline processing of the first terminal device.

It should be understood that the first terminal device is only an example of a terminal device connected to the control node, and the first terminal device may be any device connected to the control node.

For example, the control node establishes a keep-alive timer for each terminal device connected to the control node (including slave nodes and other control nodes).

For step S401, the keep-alive timer is, for example, a countdown timer. As long as no detection message from the terminal device is received, the countdown timer counts down from the initial value (that is, the maximum value).

The initial value may be set by those skilled in the art, and the initial value may represent a preset time length.

For step S402, if a detection message from the terminal device is received, the keep-alive timer is reset to the initial value.

For step S403, if the count of the keep-alive timer has been updated from the maximum value to 0, then determine The terminal device is disconnected from the control node, and offline processing of the first terminal device is started.

In this embodiment, for example, if no detection message from the terminal device is received within a preset time length, it indicates that the terminal device has been disconnected from the control node, and offline processing of the terminal device is initiated.

Offline processing may include, for example, clearing resources occupied by the terminal device, clearing the keeper of the terminal device, etc.

This method can promptly clean up the terminal device that has been offline (that is, disconnected), thereby reducing the resources occupied by the terminal device and avoiding the network resources occupied by sending messages to the offline terminal device.

Figure 4B shows a flowchart of another communication method provided by some embodiments of the present disclosure.

As shown in Figure 4B, the method may also include steps S404 to S406 in addition to the foregoing steps. Steps S404 to S406 may be executed after the terminal device accesses the ad hoc network. For example, it is executed after step S20.

Step S404: Device A periodically broadcasts detection requests.

Step S405: When device B finds that device A has been successfully registered, it considers that device A is in the keep-alive state and resets the keep-alive timer of device A.

Successful registration of device A may mean, for example, that device A has established a direct communication connection with device B. For example, device A is a slave node of device B, or device A is another control node to which device B is directly connected through communication.

Step S406: After the preset time length, the keep-alive timer of device A in device B counts to 0, and device A is considered to have disconnected from device B.

For example, in the example of FIG. 2, after the AP to be accessed accesses the target AP, the AP to be accessed may be device A in FIG. 4B, and the target AP may be device B in FIG. 4B.

For another example, in the example of FIG. 3 , after the STA to be accessed accesses the target AP, the STA to be accessed may be device A in FIG. 4B , and the target AP may be device B in FIG. 4B .

In some embodiments of the present disclosure, the communication method further includes, in response to receiving the second network address broadcast by the second terminal device in the ad hoc network, recording and displaying the second network address in the serviceable object list; in response to The selection operation of the second network address provides the first access request to the second terminal device.

For example, taking the control node that executes the communication method as the control node AP1 in Figure 1B as an example, the second terminal device can be the slave node STA21, the slave node STA22, the slave node STA23, Slave node STA31, control node AP2, control node AP3 and control node AP4.

The respective network addresses (ie, the second network addresses) of the slave nodes STA21, STA22, STA23, and STA31 are forwarded by the control node AP2 and the control node AP3 respectively.

For example, the slave node STA21 broadcasts its own network address to the control node AP2, and the control node AP2 unconditionally forwards the network address of the slave node STA21 to the control node AP1.

In response to receiving the network address of the slave node STA21, the control node AP1 records and displays the network address of the slave node STA21 in the serviceable object list of the application program, so that the user can select the network address of the slave node STA21 and the slave node in the application program. STA21 communication.

For example, in response to a user selection operation on the network address of the slave node STA21, an access request (for example, a first access request) is provided from the second terminal device.

In some embodiments of the present disclosure, for example, the name of each node or other identification can be used to represent the network address of the node, so as to facilitate users to distinguish different terminal devices, thereby helping users accurately select the node to visit. For example, the control node records the device name of the slave node STA21 in the serviceable object list of the application program to identify the network address of the slave node STA21.

In this embodiment, the network address of the terminal device that can communicate in the ad hoc network is registered in the service object list of the application program, so as to facilitate the user to select the terminal device for communication, and realize the communication of each terminal device in the ad hoc network.

In some embodiments of the present disclosure, the terminal device recorded in the serviceable object list regularly sends broadcast messages to the control node; in response to not receiving a broadcast message provided by the third terminal device recorded in the serviceable object list within a preset time , delete the third terminal device from the serviceable object list.

For example, after a terminal device successfully connects to an ad hoc network, it regularly broadcasts network access information (for example, the IP address in the ad hoc network) through broadcast packets. After other terminal devices receive the network access information, they use it in their respective applications. Register as a serviceable object and display in the serviceable object list. When a terminal device needs to communicate with a target terminal device in the ad hoc network, the target terminal device is selected in the service object list of the terminal device to perform services (for example, short message communication, short voice communication, etc.).

For example, for each terminal device (which can be a slave node or a control node), if the network access information regularly broadcast by the registered terminal device (ie, the third terminal device) is not received for more than the preset time, it is considered that the If the registered terminal device is offline, the registered terminal device will be deleted from the service object list of the application.

Figure 5 shows communication between devices in an ad hoc network provided by at least one embodiment of the present disclosure. Flowchart of the method.

As shown in Figure 5, the communication method includes steps S510 to S540.

Step S510: After successfully accessing the ad hoc network, the first device regularly broadcasts network access information through broadcast packets.

The network access information may be, for example, the IP address of the first device in the ad hoc network.

Step S520: After receiving the network access information, other terminal devices in the ad hoc network register the first device as a serviceable object in their respective applications, and display the first device in the serviceable object list.

Step S530: When the second device needs to communicate with the first device, the second device selects the first device in the serviceable object list of the second device to perform a service. The service may include, for example, sending and receiving messages, sending and receiving voice, and the like.

Step S540: If the network access information regularly broadcast by the registered serviceable object (for example, the first device) is not received within a preset time, delete the serviceable object from the serviceable object list.

In embodiments of the present disclosure, the control node periodically broadcasts its own identity information. The identity information includes the network address of the control node, that is, the IP address in the ad hoc network.

Identity information also includes gateway indication information. The gateway indication information is used to indicate that the control node has external network service capabilities, so that the nodes in the ad hoc network can set the control node as a gateway. For example, the control node AP1 in Figure 1B regularly broadcasts its own identity information. The identity information not only includes the IP address of the control node AP1, but also includes AP=T to indicate that the control node AP1 has external network service capabilities. For example, after the control node AP2 receives the identity information broadcast by the control node AP1, if the identity information indicates that the control node AP1 has the external network service capability, the control node AP2 can set the control node AP1 as a gateway.

In some embodiments of the present disclosure, the corresponding communication method also includes, in response to the control node establishing a communication connection with the external network server, broadcasting the external network address of the external network server, so that the nodes in the ad hoc network add the external network address to the to its own list of serviceable objects.

As shown in FIG. 1B , after the control node AP1 establishes a communication connection with the external network server 101 through, for example, a public communication network (such as 3G/4G/5G mobile communication network or satellite network, etc.), the control node AP1 broadcasts the external network of the external network server 101 website address. For example, in response to receiving the external network address of the external network server 101, the control nodes AP2 to AP4 add the external network address of the external network server 101 to their respective serviceable object lists.

In response to receiving the external network address of the external network server 101 provided by the control node AP2, the slave nodes STA21 to STA23 add the external network address of the external network server 101 to their respective serviceable object lists. Similarly, in response to receiving the external network address of the external network server 101 provided by the control node AP3, the slave node STA31 adds the external network address of the external network server 101 to the serviceable object list of the slave node STA31.

FIG. 6A shows a flowchart of another communication method provided by at least one embodiment of the present disclosure.

As shown in Figure 6A, the communication method may further include steps S610 to S640 based on the foregoing embodiment.

Step S610: Receive a second access request.

Step S620: Obtain the access network address in the second access request.

Step S630: In response to the access network address being an external network address, forward the second access request to the external network server.

Step S640: In response to the access network address being the target network address of the target node in the ad hoc network, forward the second access request to the target node.

This method can realize the control node as a relay to enable communication between devices in the ad hoc network, and enable the devices in the ad hoc network to communicate with external networks.

Regarding step S610, for example in the example of FIG. 1B , the control node AP2 sends a second access request to the control node AP1.

The control node AP1 receives the access request from the control node AP2.

For step S620, for example, the access network address is obtained from the second access request.

For step S630, if the accessed network address is an external network address, for example, the external network address of the external network server 101, the second access request is forwarded to the external network server 101.

For step S640, for example, the target node is the slave node STA11, and in response to the access network address being the network address of the slave node STA11 in the ad hoc network, the second access request is forwarded to the slave node STA11.

FIG. 6B shows a flowchart of another communication method provided by at least one embodiment of the present disclosure.

As shown in Figure 6B, the communication method may further include steps S650 to S680 based on the foregoing embodiment.

Step S650: When the wireless gateway mAP accesses the ad hoc network, if it also has the capability of providing external network services, it broadcasts the IP address of the wireless gateway mAP in the ad hoc network and the fixed IP address of the external network server.

Step S660: Other terminal devices in the ad hoc network receive the broadcast message of the wireless gateway mAP After that, set the IP address of the wireless gateway mAP in the ad hoc network as one of the local gateway addresses, and add the fixed IP address of the external network server to the serviceable object list of the respective application.

Step S670: The terminal device in the ad hoc network conducts services with the external network server through the wireless gateway mAP.

Step S680: For each terminal device in the ad hoc network, if the wireless gateway mAP does not receive a regular broadcast message for more than a certain period of time, it is considered that the wireless gateway mAP has left the network, and the network address of the wireless gateway mAP is changed from the local gateway removed from the address list.

In some embodiments of the present disclosure, for example, the second access request comes from the first node in the ad hoc network, and the external network server establishes a communication connection with the mobile terminal. For example, as shown in FIG. 1B , the external network server 101 also establishes a communication connection with the mobile terminal 102 .

For example, the external network server 101 serves as a proxy server to establish a communication connection with the mobile terminal 102. For another example, the external network server 101 and the mobile terminal 102 establish a communication connection through a cellular network.

The communication method may also include: in response to the access network address being the network address of the mobile terminal, sending a second access request to the external network server to forward the second access request to the mobile terminal through the external network server; and sending the response from the external network server The message is forwarded to the first node, and the response message is provided by the mobile terminal to the external network server.

For example, the first node is the control node AP2. The access network address provided by the control node AP2 is the IP address of the mobile terminal 102 . The control node AP2 sends a second access request to the control node AP1. The control node AP1 forwards the second access request to the external network server 101, and then the external network server 101 forwards the second access request to the mobile terminal 102.

The mobile terminal 102 responds to the second access request and sends a response message to the external network server 101. The external network server 101 provides a response message to the control node AP2 via the control node AP1.

This communication method can realize communication between any device in the ad hoc network and an external mobile terminal. For example, any device in the ad hoc network can perform data communication, voice communication, etc. with external mobile terminals.

In some embodiments of the present disclosure, the proxy server also includes a proxy server for the SMS service of the operator channel, and sends SMS messages to the mobile terminal through the proxy server. That is, the external network server serves as the proxy server of the operator channel, is used to act as an agent for the SMS service or call service of the operator channel, and sends SMS messages or voice calls to the mobile terminal through the proxy server.

In this embodiment, the external network server is an agent of the operator, and the terminal device in the ad hoc network can send text messages to the mobile terminal through the external network server. This embodiment expands the terminal equipment in the ad hoc network How the device communicates with external terminals.

In some embodiments of the present disclosure, in addition to the control node establishing a communication connection with the external network server, at least one second node in the ad hoc network establishes a communication connection with the external network server, and the ad hoc network is configured with the external network server in a polling manner. The communication node selected from at least one second node and the control node is used to communicate with the external network server. Receiving the second access request includes: receiving the second access request in response to the communication node being the control node, that is, when the communication node is the control node, the control node receives the second access request.

In some embodiments of the present disclosure, communicating with the external network server includes utilizing a mobile cellular network and/or a satellite network to communicate with the external network server.

For example, in the example of FIG. 1B , in addition to the control node AP1 establishing a communication connection with the external network server 101 , the control node AP3 and the control node AP4 also establish a communication connection with the external network server. Control node AP3 and control node AP4 are examples of at least one second node. That is, in the ad hoc network shown in Figure 1B, the control node AP1, the control node AP3 and the control node AP4 establish communication connections with the external network server 101, and the ad hoc network starts from the control node AP1, the control node AP3 and the external network server in a polling manner. The control node AP4 selects a communication node used to communicate with the external network server 101. If the communication node is the control node AP1, the control node AP1 receives the second access request. If the communication node is the control node AP2, the control node AP2 receives the second access request.

In this disclosure, the polling method means that multiple control nodes (ie, mAPs) in the ad hoc network that can communicate with the external network server are sorted in a certain order, and each control node is visited sequentially in this order.

In some embodiments of the present disclosure, the order in which the control node and at least one second node are arranged in polling is periodically changed, that is, the order in which multiple mAPs in these ad hoc networks are arranged in polling is regularly changed. Regularly changing the order of multiple mAPs in polling can macroscopically balance the proxy load of each mAP.

In some embodiments of the present disclosure, in the case of being able to communicate with the external network server, in the arrangement sequence of multiple mAPs in an ad hoc network, the nodes that use the mobile cellular network to communicate with the external network server are polled. The sort order is in front of the nodes that use the satellite network to communicate with the external network server. In this way, the mobile cellular network is given priority to communicate with the external network server, which reduces communication costs and improves communication efficiency.

Embodiments of the present disclosure provide a network communication method based on an ad hoc network using unlicensed frequency band wireless communication technology. For example, multiple vehicle systems and mobile terminals will implement ad hoc networks based on wireless link quality and authorization conditions. Basic services (such as messages, voice, etc.) can be communicated in real time between any devices in the network. For example, when there is a device in the ad hoc network that has the ability to communicate with the external network (such as having satellite communication capabilities or entering the cellular network coverage area), other devices can also communicate with the external network through the device. Through this fully automatic network communication method, seamless and economical interconnection between users in the group at any time and in any region is achieved, reducing the existence of information islands. The self-organizing network architecture provided by the embodiments of the present disclosure can be quickly and safely established, ensuring the security, stability, and scalability of the self-organizing network.

Figure 7 shows a schematic block diagram of a communication device 700 provided by at least one embodiment of the present disclosure.

For example, as shown in FIG. 7 , the communication device 700 includes a receiving unit 710 and an address allocating unit 720 .

The receiving unit 710 is configured to receive a wireless access request provided by the first terminal device, where the wireless access request is used to request access to the ad hoc network.

The receiving unit 710 may, for example, perform step S10 described in FIG. 1A.

The address allocation unit 720 is configured to allocate a first network address for communicating in the ad hoc network to the first terminal device in response to allowing the first terminal device to access the ad hoc network, so that the first terminal device accesses the ad hoc network and communicates in the ad hoc network using the first network address.

The receiving unit 710 may, for example, perform step S20 described in FIG. 1A.

For example, the receiving unit 710 and the address allocating unit 720 may be hardware, software, firmware, or any feasible combination thereof. For example, the receiving unit 710 and the address allocating unit 720 may be dedicated or general-purpose circuits, chips or devices, or may be a combination of a processor and a memory. Regarding the specific implementation forms of each of the above units, the embodiments of the present disclosure do not limit this.

It should be noted that in the embodiments of the present disclosure, the various units of the communication device 700 correspond to the various steps of the aforementioned communication method. For the specific functions of the communication device 700, reference can be made to the relevant description of the communication method, which will not be repeated here. The components and structure of the communication device 700 shown in FIG7 are only exemplary and non-restrictive. The communication device 700 may also include other components and structures as needed.

At least one embodiment of the present disclosure also provides an electronic device including a processor and a memory including one or more computer program modules. One or more computer program modules are stored in the memory and configured to be executed by the processor, and the one or more computer program modules include instructions for implementing the above-mentioned communication method. The electronic device can use control nodes to establish an ad hoc network, so that even in scenarios where there is no communication infrastructure, it can communicate internally through the ad hoc network. Once a device in the ad hoc network has basic communication capabilities, the ad hoc network can Other devices in the network can also communicate with the outside through this device.

FIG. 8A is a schematic block diagram of an electronic device provided by some embodiments of the present disclosure. As shown in FIG. 8A , the electronic device 800 includes a processor 810 and a memory 820 . Memory 820 is used to store non-transitory computer-readable instructions (eg, one or more computer program modules). The processor 810 is configured to execute non-transitory computer readable instructions. When the non-transitory computer readable instructions are executed by the processor 810, they may perform one or more steps in the communication method described above. Memory 820 and processor 810 may be interconnected by a bus system and/or other forms of connection mechanisms (not shown).

For example, the processor 810 may be a central processing unit (CPU), a graphics processing unit (GPU), or other forms of processing units having data processing capabilities and/or program execution capabilities. For example, the central processing unit (CPU) may be an X86 or ARM architecture, etc. The processor 810 may be a general-purpose processor or a dedicated processor, and may control other components in the electronic device 800 to perform desired functions.

For example, memory 820 may include any combination of one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and/or non-volatile memory. Volatile memory may include, for example, random access memory (RAM) and/or cache memory (cache), etc. Non-volatile memory may include, for example, read-only memory (ROM), hard disk, erasable programmable read-only memory (EPROM), portable compact disk read-only memory (CD-ROM), USB memory, flash memory, and the like. One or more computer program modules may be stored on the computer-readable storage medium, and the processor 810 may run the one or more computer program modules to implement various functions of the electronic device 800 . Various application programs and various data, as well as various data used and/or generated by the application programs, etc. can also be stored in the computer-readable storage medium.

It should be noted that in the embodiment of the present disclosure, for the specific functions and technical effects of the electronic device 800, reference can be made to the above description of the communication method, which will not be described again here.

FIG. 8B is a schematic block diagram of another electronic device provided by some embodiments of the present disclosure. The electronic device 900 is, for example, suitable for implementing the communication method provided by the embodiment of the present disclosure. Electronic equipment 900 can So mobile phones, tablets, navigation equipment, vehicles (such as vehicle systems), smart wearable devices and other terminal equipment, etc. It should be noted that the electronic device 900 shown in FIG. 8B is only an example, which does not bring any limitations to the functions and scope of use of the embodiments of the present disclosure.

As shown in FIG. 8B, the electronic device 900 may include a processing device (eg, central processing unit, graphics processor, etc.) 910, which may be loaded into a random access memory according to a program stored in a read-only memory (ROM) 920 or from a storage device 980. The program in the memory (RAM) 930 executes various appropriate actions and processes. In the RAM 930, various programs and data required for the operation of the electronic device 900 are also stored. The processing device 910, ROM 920 and RAM 930 are connected to each other through a bus 940. An input/output (I/O) interface 950 is also connected to bus 940.

Generally, the following devices may be connected to the I/O interface 950: input devices 960 including, for example, a touch screen, touch pad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, etc.; including, for example, a liquid crystal display (LCD), speakers, vibration An output device 970 such as a computer; a storage device 980 including a magnetic tape, a hard disk, etc.; and a communication device 990. The communication device 990 may allow the electronic device 900 to communicate wirelessly or wiredly with other electronic devices to exchange data. Although FIG. 8B illustrates electronic device 900 having various means, it should be understood that implementation or provision of all illustrated means is not required, and electronic device 900 may alternatively implement or be provided with more or fewer means.

For example, according to an embodiment of the present disclosure, the above-mentioned communication method can be implemented as a computer software program. For example, an embodiment of the present disclosure includes a computer program product, which includes a computer program carried on a non-transitory computer-readable medium, and the computer program includes a program code for executing the above-mentioned communication method. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device 990, or installed from a storage device 980, or installed from a ROM 920. When the computer program is executed by the processing device 910, the functions defined in the communication method provided in the embodiment of the present disclosure can be implemented.

At least one embodiment of the present disclosure also provides a computer-readable storage medium for storing non-transitory computer-readable instructions, which can implement the above when the non-transitory computer-readable instructions are executed by a computer. communication method. Using this computer-readable storage medium, control nodes can be used to establish an ad hoc network, so that even in scenarios where there is no communication infrastructure, internal intercommunication can be carried out through the ad hoc network, and once a device in the ad hoc network has basic communication When capable, other devices in the ad hoc network can also communicate with the outside through this device.

FIG9 is a schematic diagram of a storage medium provided by some embodiments of the present disclosure. As shown in FIG9, The storage medium 1000 is used to store non-transitory computer-readable instructions 1010. For example, when the non-transitory computer-readable instructions 1010 are executed by a computer, one or more steps in the communication method described above may be performed.

For example, the storage medium 1000 can be applied to the above-mentioned electronic device 800. For example, the storage medium 1000 may be the memory 820 in the electronic device 800 shown in FIG. 8A. For example, for relevant descriptions about the storage medium 1000, reference may be made to the corresponding description of the memory 820 in the electronic device 800 shown in FIG. 8A, which will not be described again here.

The following points need to be explained:

(1) The drawings of the embodiments of this disclosure only relate to the structures involved in the embodiments of this disclosure, and other structures can refer to common designs.

(2) Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. The protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims (23)

1. A communication method, applied to control nodes in ad hoc networks, the method includes:

   Receive a wireless access request provided by the first terminal device, wherein the wireless access request is used to request access to the ad hoc network; and

   In response to allowing the first terminal device to access the ad hoc network, allocating a first network address for communicating in the ad hoc network to the first terminal device, so that the first terminal device accesses the ad hoc network, and communicate in the ad hoc network using the first network address.
2. The method of claim 1, wherein the ad hoc network includes a wireless local area network established using unlicensed spectrum.
3. The method according to claim 1 or 2, wherein, in response to allowing the first terminal device to access the ad hoc network, allocating a first network address for communicating in the ad hoc network to the first terminal device comprises:

   In response to allowing the first terminal device to access the ad hoc network, determining the device type of the first terminal device;

   In response to the first terminal device being a slave node of the control node, allocate a first type network address to the first terminal device;

   In response to the first terminal device being another control node, a second-type network address is allocated to the first terminal device.
4. The method of claim 3, wherein the first type of network address includes a Class C network address and the second type of network address includes a Class B network address.
5. The method according to claim 3 or 4, further comprising:

   In response to the first terminal device being another control node, determining whether the first terminal device has external network service capabilities;

   In response to the first terminal device having an external network service capability, the first terminal device is marked as a gateway.
6. The method according to any one of claims 1-5, further comprising:

   After the first terminal device accesses the ad hoc network, the first network address of the first terminal device is broadcast.
7. The method according to any one of claims 1-6, further comprising:

   Set a keep-alive timer for the first terminal device;

   In response to receiving the detection message from the first terminal device, resetting the keep-alive timer to a maximum value;

   In response to the fact that the detection message of the first terminal device has not been received and the keep-alive timer counts to 0, offline processing of the first terminal device is started.
8. The method according to any one of claims 1-7, further comprising:

   In response to receiving a second network address broadcasted by a second terminal device in the ad hoc network, recording and displaying the second network address in a serviceable object list;

   In response to the selection operation of the second network address, a first access request is provided to the second terminal device.
9. The method according to claim 8, wherein the terminal device recorded in the serviceable object list regularly sends broadcast messages to the control node;

   In response to not receiving a broadcast message provided by a third terminal device recorded in the serviceable object list within a preset time, deleting the third terminal device from the serviceable object list.
10. The method according to any one of claims 1-9, further comprising:

    Broadcast the identity information of the control node, wherein the identity information includes the network address of the control node.
11. The method according to claim 10, wherein the identity information further includes gateway indication information, and the gateway indication information is used to indicate that the control node has external network service capabilities, so that the nodes in the ad hoc network will use the external network service capability. The control node is set as a gateway.
12. The method according to claim 10 or 11, further comprising:

    In response to the control node establishing a communication connection with the external network server, broadcast the external network address of the external network server, so that the node in the ad hoc network adds the external network address to its own serviceable object list middle.
13. The method according to claim 12, wherein the control node establishes a communication connection with the external network server, and the method further includes:

    Receive the second access request;

    Obtain the access network address in the second access request;

    In response to the access network address being the external network address, forward the second access request to the external network server;

    In response to the access network address being the target network address of the target node in the ad hoc network, the second access request is forwarded to the target node.
14. The method according to claim 13, wherein the second access request comes from the first node in the ad hoc network, the external network server establishes a communication connection with the mobile terminal, and the method further comprises:

    In response to the access network address being the network address of the mobile terminal, sending the second access request to the external network server to forward the second access request to the mobile terminal through the external network server; as well as

    Forwarding the response message from the external network server to the first node, wherein the response message is provided by the mobile terminal to the external network server.
15. The method according to claim 14, wherein the external network server serves as a proxy server to establish a communication connection with the mobile terminal.
16. The method according to claim 15, wherein the proxy server further includes:

    Act as an agent for the SMS service of the operator channel, and send SMS messages to the mobile terminal through the proxy server.
17. The method according to any one of claims 13-16, wherein, in addition to the control node establishing a communication connection with the external network server, at least one second node in the ad hoc network communicates with the external network. The server establishes a communication connection, and the ad hoc network selects a communication node for communicating with the external network server from the at least one second node and the control node in a polling manner,

    Receiving the second access request includes:

    In response to the communication node being the control node, the second access request is received.
18. The method of claim 17, wherein the order of the control node and the at least one second node in the polling is periodically changed.
19. The method according to claim 18, wherein communicating with the external network server includes using a mobile cellular network and/or a satellite network to communicate with the external network server.
20. The method according to claim 19, wherein in the case of being able to communicate with the external network server, the order of the nodes communicating with the external network server using the mobile cellular network in the polling is in the order of using the satellite network. The front of the node communicating with the external network server.
21. A communication device applied to a control node in an ad hoc network, the device includes:

    a receiving unit, configured to receive a wireless access request provided by a first terminal device, wherein the wireless access request is used to request access to the ad hoc network; and

    An address allocation unit configured to, in response to allowing the first terminal device to access the ad hoc network, allocate to the first terminal device a first network address for communication in the ad hoc network, so that the The first terminal device accesses the ad hoc network and uses the first network address to communicate in the ad hoc network.
22. An electronic device including:

    processor;

    memory, including one or more computer program instructions;

    Wherein, the one or more computer program instructions are stored in the memory, and when executed by the processor, the instructions implement the communication method according to any one of claims 1-20.
23. A computer-readable storage medium non-transitoryly stores computer-readable instructions, wherein when the computer-readable instructions are executed by a processor, the communication method according to any one of claims 1-20 is implemented.