CN112468323A - Broadband and narrowband integrated communication equipment and system - Google Patents
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Abstract
The invention provides a broadband and narrowband integrated communication device and a system, comprising a narrowband communication module, a broadband communication module and a core control module consisting of a transceiving scheduling module, a routing control module and a user access module; the narrow-band communication module is used for realizing narrow-band service; the broadband communication module is used for realizing broadband service; and the core control module is used for realizing the loading of an operating system, the control of the broadband communication module and the narrowband communication module and the running task of an ad hoc network protocol, and simultaneously providing a user interface. The wide-band communication module and the narrow-band communication module can meet the transmission requirements of wide-band services and narrow-band services respectively, and can also complete the construction of a self-organizing network through the narrow-band communication module in a severe communication environment, so that the network coverage range is expanded as much as possible. And simultaneously, the wireless communication service under the ad hoc network with the highest bandwidth and the robustness can be provided by flexibly using the cooperative scheduling of the broadband and narrowband communication modules.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a broadband and narrowband integrated communication system.
Background
The wireless self-organizing network is a multi-hop mobility peer-to-peer network which is composed of a plurality of nodes, adopts a wireless communication mode and is dynamically networked. The objective is to transport data streams with quality of service requirements through dynamic routing and mobility management techniques. The nodes do not need to be supported by fixed equipment, and each node is networked by itself; when a node wants to communicate with nodes outside its coverage, multi-hop forwarding by intermediate nodes is required. Unlike multi-hop in fixed networks, multi-hop routing in wireless ad hoc networks is performed by ordinary network nodes, rather than by dedicated routing devices (e.g., routers). The network form breaks through the geographical limitation of the traditional wireless network, can be deployed more quickly, conveniently and efficiently, and is suitable for scenes which have no network on site and need to be established and installed quickly, such as earthquake rescue, fire rescue, forest communication, security communication and the like.
The node in the current wireless self-organizing network usually adopts a single high-bandwidth communication module, the broadband communication module can provide higher bandwidth and relatively lower time delay for wireless communication, but the problem that communication quality fluctuation and even communication interruption occur when interference is encountered in a complex communication scene inevitably exists, the communication coverage is relatively small, high-bandwidth communication service cannot be used in an area with poor actual connection condition, and the organization and the basic communication requirement of the network cannot be completed. In addition, nodes in a network generally have different Quality of Service (QoS) requirements for communication tasks of different priorities, but it is difficult to guarantee that the QoS requirements are realized at a transmitting end by using only transmission scheduling in an ad hoc network environment.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a broadband and narrowband integrated wireless communication device and system which simultaneously have a broadband communication module and a narrowband communication module, aiming at the problems that contradictions exist between high bandwidth and high availability in a wireless self-organizing network and the broadband communication module is easy to interfere under a complex scene; the narrow-band communication module has higher anti-interference capability relatively, can provide communication coverage capability at a longer distance, can provide communication service with relatively shorter bandwidth and relatively lower transmission rate, network situation perception and networking service in a complex scene, and fully utilizes the advantages of the broadband communication module and the narrow-band communication module by realizing the cooperative work of the broadband communication module and the narrow-band communication module. The broadband and narrowband integrated wireless communication system can meet the transmission requirements of broadband and narrowband services respectively, and can also complete the construction of a self-organizing network through a narrowband communication module in a severe communication environment, so that the network coverage range is expanded as much as possible. And simultaneously, the wireless communication service under the ad hoc network with the highest bandwidth and the robustness can be provided by flexibly using the cooperative scheduling of the broadband and narrowband communication modules.
The technical scheme is as follows: in order to achieve the purpose, the technical scheme provided by the invention is as follows:
a broadband and narrowband integrated communication device comprises a narrowband communication module, a broadband communication module, a transceiving scheduling module, a routing control module and a user access module; wherein:
the broadband communication module and the narrow-band communication module respectively realize broadband services and narrow-band services;
the user access module provides a user interface and manages the wide and narrow band applications of the user: when receiving data, adding classification labels into data packets corresponding to the wide and narrow band applications, then segmenting and packaging the data packets according to the length and format of the data packets required by the wide band communication module and the narrow band communication module, and transmitting the data packets to the transceiving scheduling module; when data is sent, the data packet is transmitted to corresponding broadband application or narrowband application according to the classification label of the data packet;
the routing control module is used for realizing network establishment and transmission path selection in the system;
the receiving and dispatching module caches the received data packets, monitors the working states of the wide and narrow band communication modules to judge the availability of the wide band transmission and the narrow band transmission, loads the cached data packets into a wide band transmission queue or a narrow band transmission queue according to the judgment result and finally completes the receiving/transmitting of the data packets through the path selected by the routing control module.
In the technical scheme, the receiving and dispatching module, the route control module and the user access module jointly form a core control module,
the core control module is responsible for providing a user access interface for a user and providing transceiving processing capacity for the communication module, and the specific working steps of the module are as follows:
(1) after the system is started, the core control module firstly completes the connection of the broadband communication module and the narrowband communication module, and after confirming that the communication modules are all on the system and can work, the core control module sends frequency point configuration to the broadband communication module to complete the initialization work of the broadband communication module and the narrowband communication module. After that, the sending scheduler in the core control module will always monitor the connection status with the neighboring nodes through the communication module, including the signal-to-noise ratio, the available bandwidth, and other information.
(2) And starting a transmitting and receiving scheduling program, wherein the transmitting scheduling program is responsible for monitoring the working states of the broadband communication module and the narrowband communication module, and respectively loading the required data packets into corresponding queues according to the types of the data packets required to be transmitted. When the network condition is good, the broadband service sent by the user, such as video, voice and other data packets, are split and preferentially loaded into a broadband sending queue; loading the data packet and the narrow-band service generated by the routing control program into a narrow-band sending queue; when the network condition is poor, but the narrow-band communication module can still keep connection, the routing control program reports and caches the broadband data to the upper layer, only provides the sending service of the narrow-band data to the upper layer, and continues to send and receive the data packet in the routing control program.
(3) Starting a routing control program, generating routing information, loading a data packet, and transmitting the routing information to a transceiving scheduling program; meanwhile, a routing packet is extracted from a receiving queue of the sending scheduling program, and a routing table is calculated and updated according to data in the routing packet, so that a transmission path reaching each node in the network is determined. The data packet sent by the user also needs to pass through a routing control program, and the routing control program determines the next node sent this time according to the sending purpose of the data packet, loads the information into the data packet and then transmits the information to a sending scheduling program. In addition, the routing control program generates a data packet containing the node position and the connection status with the adjacent nodes and broadcasts the data packet through the narrow-band module, and the adjacent module can confirm the connection quality according to the data packet.
(4) The user access control procedure is initiated. The user access control program is upward responsible for monitoring data packets from the user, providing the user with a node list which can be connected and communicated at the moment, and providing services which can be provided by the network state of each node; and network information is acquired downwards from the routing control program and the sending scheduling program, and the data packet from the user is cut and assembled according to the length of the data packet which can be sent and then transmitted to the routing control program.
Several alternatives are provided below for the above-described device, but not as an additional limitation to the above-described general solution, but merely as a further addition or preference, each alternative being combinable individually for the above-described general solution or among several alternatives without technical or logical contradictions.
Optionally, the routing control module includes a user data packet classifier, a status broadcast management program, and a routing management program, where the user data packet classifier is configured to cache a received or to-be-sent data packet, and fill the data packet into a corresponding receiving/sending queue according to a classification tag of the data packet; the routing management program is responsible for providing data needing to be filled into a routing packet to be broadcasted for the routing state broadcast program in the network topology construction, and is also responsible for analyzing the routing packet in the receiving queue and updating a routing state table; in the process of sending user data, a routing management program is responsible for analyzing a destination node sent by a user, selecting a proper sending path for the sending and filling the sending path into a data packet; in the user data receiving process, the routing management program is responsible for removing the routing header in the data packet and processing the data packet to be forwarded.
Optionally, a buffering and transferring mechanism is further disposed in the transceiving scheduling module, and when the transceiving scheduling module detects that the broadband connection is unavailable, the transceiving scheduling module transfers the broadband service of the user to the narrowband communication module for transmission, or buffers the broadband service in the routing control module.
Optionally, an automatic networking mechanism is further configured in the device, and the node can automatically search and join the configured peer-to-peer network.
Optionally, the broadband communication module is connected to the transceiving scheduling module through a broadband communication interface, where the broadband communication interface is a high-bandwidth network port; the narrow-band communication module is connected to the transceiving scheduling module through a narrow-band communication interface, and the narrow-band communication interface is a serial port.
Optionally, the user interface includes a PCI interface, an ethernet interface, and a SATA interface.
On the other hand, the invention also provides a broadband and narrowband integrated communication system, wherein the system comprises a plurality of ad hoc network nodes, and the ad hoc network nodes are the broadband and narrowband integrated communication equipment.
Has the advantages that: compared with the prior art, the invention has the following advantages:
the invention can meet the requirements of broadband and narrowband services at the same time, keep the requirements of high transmission rate and low time delay of users when broadband connection is available, and can keep the discoverability of the nodes in the network and the availability of narrowband services without changing the configuration of the broadband nodes when the network condition is poor, thereby ensuring the availability of the whole network. Furthermore, the present invention can provide different quality of service level guarantees to broadband and narrowband communication modules by scheduling them for different types of tasks in a single node.
Drawings
Fig. 1 is an internal structure diagram of a broadband and narrowband integrated communication apparatus according to embodiment 1;
fig. 2 is a flowchart of the operation of the broadband and narrowband integrated communication apparatus according to embodiment 1;
fig. 3 is a packet flow diagram of the broadband/narrowband integrated communication apparatus according to embodiment 1;
fig. 4 is a schematic diagram of networking and data transmission of the broadband and narrowband integrated communication system according to embodiment 2.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments. It is to be understood that the present invention may be embodied in various forms, and that there is no intention to limit the invention to the specific embodiments illustrated, but on the contrary, the intention is to cover some exemplary and non-limiting embodiments shown in the attached drawings and described below.
It is to be understood that the features listed above for the different embodiments may be combined with each other to form further embodiments within the scope of the invention, where technically feasible. Furthermore, the particular examples and embodiments of the invention described are non-limiting, and various modifications may be made in the structure, steps, and sequence set forth above without departing from the scope of the invention.
Example 1:
the embodiment of the invention aims to provide a broadband and narrowband integrated wireless communication device which is provided with a broadband communication module and a narrowband communication module simultaneously. As shown in fig. 1, the communication device proposed in this embodiment is composed of a wide-band communication module, a narrow-band communication module, a transceiving scheduling module, a routing control module, and a user access module. The narrow-band communication module realizes the transmission of narrow-band services, such as instructions, texts and other data, and mainly comprises a narrow-band communication device and a narrow-band communication power supply module. The broadband communication module realizes the transmission of broadband services, such as video and other data, and mainly comprises broadband communication equipment, a frequency conversion front-end module and a power supply module. The receiving and dispatching module, the route control module and the user access module jointly form a core control module of the equipment, the core control module realizes the loading of an operating system, the control of the broadband communication module and the narrow-band communication module and the operation task of an ad hoc network protocol, and simultaneously provides a user interface. In fig. 1, a wide arrow indicates a flow direction of data, and a narrow arrow indicates a flow direction of a control instruction.
The wide and narrow band communication module is responsible for actual data transmission and reception in the wide and narrow band integrated communication system. The wide and narrow-band communication modules are transceiver modules capable of independently completing communication. The broadband communication module is used for completing broadband application services of a user, such as high-definition voice, real-time video transmission and file sharing; the narrow-band communication module is used for completing narrow-band application services of users, such as ensuring voice talkback and text message transmission, and is also used for transmitting routing data packets and establishing an ad hoc network.
The receiving and dispatching module is responsible for the sending and receiving control in the broadband and narrowband integrated communication system. The sending scheduling module is responsible for monitoring the working states of the broadband communication module and the narrowband communication module to judge the availability of broadband sending and narrowband sending, and simultaneously, the required data packets are respectively loaded into a broadband sending queue or a narrowband sending queue according to the types of the data packets to be sent. And the receiving and scheduling module is responsible for reading and caching the received data packets from the wide-band and narrow-band communication equipment.
And the routing control module is responsible for network establishment and transmission path selection in the broadband and narrowband integrated communication system. The route management program is the core in the route control module. In the network topology construction, the route management program is responsible for providing data to be filled into a route packet to be broadcasted (the data to be filled into the broadcasted route packet refers to a neighbor node and a reachable node of a node sending the route packet and the wide-narrow-band connection condition of the nodes) to the route state broadcast program, and is also responsible for analyzing the route packet in a receiving queue and updating a route state table. In the user data transmission, it is responsible for analyzing the destination node of the user transmission, and selecting a proper transmission path for the transmission and filling the transmission path into a data packet. In the user data receiving process, the method is responsible for removing the routing head in the data packet and processing the data packet needing to be forwarded.
And the user access module is responsible for user access and service management in the broadband and narrowband integrated communication system. The broadband application and the narrowband application of the user are directly connected to the user access module, when the data packets are sent, the user access module adds different labels into the data packets corresponding to the applications, and then the data packets are segmented and encapsulated according to the length and the format of the data packets required by the broadband communication module and the narrowband communication module. Further, the data packets are transmitted to the user data packet classifier of the routing control module. And when receiving, the user access module transmits the data packet to corresponding broadband or narrowband application according to the data packet type given by the user data packet classifier in the routing control module.
In this embodiment, the broadband communication module is connected with the transceiving scheduling module through a network port, and the data packets in the transmission queue are encapsulated into network packets; the narrow-band communication module is connected with the receiving and dispatching module through a serial port, and the data packets in the sending queue are packaged into data packets with corresponding formats. Accordingly, the transceiving control module needs to decapsulate and unify the formats of the data packets and add the data packets to the receiving queue.
Specifically, a caching and forwarding mechanism is arranged in the communication device described in this embodiment, when the target node is unavailable for the broadband connection with the node, but the narrowband connection is available, the broadband data packet is temporarily cached by the routing control module, and the availability of the broadband connection with the corresponding node is queried within a period of time, and if the time is out or the cached data packet exceeds a threshold, the old cache is immediately discarded. If the narrowband connection is not available, the routing program does not mark and send the data packets to the transceiving scheduling module, but directly discards the data packets.
Optionally, the buffer size and the timeout may be specified by a user.
Optionally, when the broadband connection with a certain node is available, the user datagram classifier in the routing control module encapsulates the narrowband service of the user into a broadband data packet to achieve a better transmission effect.
Optionally, when the broadband connection with a certain node is not available but the narrowband connection is available, the broadband service of the user may be split and encapsulated into narrowband packets to maintain the availability of the broadband service.
In conjunction with the node structure in fig. 1, fig. 2 shows a specific node work flow of embodiment 1, specifically, from the beginning to the user access control program starting, an "initialization" part is followed by a "work" part. The "initialize" portion includes the steps of:
the first step is as follows: and starting the broadband communication module and the narrowband communication module.
After the system starts to supply power and is started, the broadband communication module and the narrowband communication module enter an initialization state firstly, and the initialization state comprises the steps of loading specific working configuration, selecting frequency points and the like.
The second step is that: the core control module is connected with the broadband communication module and the narrow-band communication module.
The core control module completes the connection of the broadband communication module and the narrowband communication module, and after confirming that the communication modules are all on the system and can work, the core control module sends frequency point configuration to the broadband communication module to complete the initialization work of the broadband communication module and the narrowband communication module. After that, the sending scheduler in the core control module will always monitor the connection status with the neighboring nodes through the communication module, including the signal-to-noise ratio, the available bandwidth, and other information.
Specifically, what connects the communication module is a transmission and reception control section in the core control module.
The third step: starting a transceiving scheduling program and initializing a broadband and narrowband transceiving queue.
And the sending scheduler starts to monitor the working states of the broadband communication module and the narrowband communication module and respectively loads the required data packets into the corresponding broadband sending queue and the narrowband sending queue according to the types of the data packets required to be sent. And if the data packet of the communication module is received, the data packet is unpacked and loaded into a receiving queue after being in a uniform format.
The fourth step: starting a routing control program and establishing a routing table.
The route control program generates route information and loads data packets, and transmits the route information to the transceiving scheduling program; meanwhile, the routing control program extracts the routing packet from the receiving queue of the transceiving scheduling program, and calculates and updates the routing table according to the data in the routing packet, thereby determining the transmission path reaching each node in the network.
The fifth step: the user access control procedure is initiated.
The subscriber access control program begins listening for data packets from the subscriber application, providing the subscriber with a list of nodes that can connect and communicate at that time, and giving each node the services that the network state can provide.
In the "work" section, the work content of each module is:
the transceiving scheduling module can monitor the connection state with the adjacent node through the communication module all the time, wherein the connection state comprises information such as signal to noise ratio and available bandwidth, and the information is transmitted to the routing control module. When the network condition is good, the broadband service sent by the user, such as video, voice and other data packets, are split and preferentially loaded into a broadband sending queue; loading the data packet and the narrow-band service generated by the routing control program into a narrow-band sending queue; when the network condition is poor, but the narrow-band communication module can still keep connection, the routing control program reports and caches the broadband data to the upper layer, only provides the sending service of the narrow-band data to the upper layer, and continues to send and receive the data packet in the routing control program.
The route control program actively sends the route packet, receives the route packet from the receiving queue and updates the route table according to the route packet. When a user data packet needs to be sent, the routing control program determines the next node to be sent according to the sending purpose of the data packet and the routing table, loads the information into the data packet and then transmits the information to the sending scheduling program. In addition, the routing control program generates a data packet containing the node position and the connection status with the adjacent nodes and broadcasts the data packet through the narrow-band module, and the adjacent module can confirm the connection quality according to the data packet.
When sending, the user access module adds different labels to the data packets corresponding to the applications, and then segments and encapsulates the data packets according to the length and format of the data packets required by the broadband communication module and the narrowband communication module. Further, the data packets are transmitted to the user data packet classifier of the routing control module. And when receiving, the user access module transmits the data packet to corresponding broadband or narrowband application according to the data packet type given by the user data packet classifier in the routing control module.
In this embodiment, data packets sent and received by the user traffic and networking program are transmitted and processed within the device in the manner of fig. 3. During transmission and processing, data packets can be classified into user service data packets and routing data packets.
In a sending path, after a wide and narrow band service data packet of a user is subjected to wide and narrow band service segmentation marking in a user data access layer, a routing program encapsulates and marks a transmission path at the head part of a routing layer of an ad hoc network, and then the transmission path enters a corresponding wide and narrow band sending queue; the routing data packet is generated by a routing program at a routing layer of the ad hoc network and then is directly added into a narrow-band sending queue.
In the receiving path, the data packet received by the communication device is added into a receiving queue after format recovery. The user service data packet is unpacked by the routing program at the routing layer of the ad hoc network, classified to the corresponding user application at the user data access layer and finally forwarded to the service application of the user, thereby completing one-time receiving. The routing data packet is extracted to the ad hoc network routing layer, and the ad hoc network routing program calculates and updates the routing table by using the received data packet.
Example 2:
the embodiment further provides a broadband and narrowband integrated communication system, where the system includes a plurality of ad hoc network nodes, and the ad hoc network nodes are the broadband and narrowband integrated communication devices. Fig. 4 is a specific application scenario of the present embodiment. Wherein 401-405 is the broadband and narrowband integrated communication device described in embodiment 1; 406 represents an obstructed area through which broadband communication signals cannot pass; the dotted circle near each communication terminal represents the communication coverage of the broadband communication device, and the solid circle represents the communication coverage of the narrowband communication device.
If the traditional ad hoc network communication method only with the broadband is used, only three nodes 401, 402 and 403 can normally communicate with each other, the node 404 cannot join the network due to the too far distance, and the node 405 cannot be networked with the node 404 due to the blocking and cannot be found and joined into the network.
If a networking and communication method only using a narrow band is used, although the nodes 401 and 405 can all join the network, the network can only carry narrow band traffic, and services such as high-definition voice and video transmission cannot be used between the nodes.
Using the networking and communication method provided in this embodiment 1, the node 401 and the node 405 can both join the network, where the nodes 404 and 405 are marked by the user access control program as being capable of providing only the narrowband service, and the node 401 and the node 403 can use the broadband service while maintaining the communication connection with the node 404 and the node 405.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A broadband and narrowband integrated communication device is characterized by comprising a narrowband communication module, a broadband communication module, a transceiving scheduling module, a routing control module and a user access module; wherein:
the broadband communication module and the narrow-band communication module respectively realize broadband services and narrow-band services;
the user access module provides a user interface and manages the wide and narrow band applications of the user: when receiving data, adding classification labels into data packets corresponding to the wide and narrow band applications, then segmenting and packaging the data packets according to the length and format of the data packets required by the wide band communication module and the narrow band communication module, and transmitting the data packets to the transceiving scheduling module; when data is sent, the data packet is transmitted to corresponding broadband application or narrowband application according to the classification label of the data packet;
the routing control module is used for realizing network establishment and transmission path selection in the system;
the receiving and dispatching module caches the received data packets, monitors the working states of the wide and narrow band communication modules to judge the availability of the wide band transmission and the narrow band transmission, loads the cached data packets into a wide band transmission queue or a narrow band transmission queue according to the judgment result and finally completes the receiving/transmitting of the data packets through the path selected by the routing control module.
2. The broadband and narrowband integrated communication device according to claim 1, wherein the routing control module comprises a user packet classifier, a status broadcast management program, and a routing management program, wherein the user packet classifier is configured to buffer received or to-be-transmitted packets and fill the packets into corresponding receiving/transmitting queues according to classification tags of the packets; the routing management program is responsible for providing data needing to be filled into a routing packet to be broadcasted for the routing state broadcast program in the network topology construction, and is also responsible for analyzing the routing packet in the receiving queue and updating a routing state table; in the process of sending user data, a routing management program is responsible for analyzing a destination node sent by a user, selecting a proper sending path for the sending and filling the sending path into a data packet; in the user data receiving process, the routing management program is responsible for removing the routing header in the data packet and processing the data packet to be forwarded.
3. The broadband and narrowband integrated communication device according to claim 1, wherein a buffering and transfer sending mechanism is further disposed in the transceiving scheduling module, and when the transceiving scheduling module detects that the broadband connection is unavailable, the broadband service of the user is transferred to the narrowband communication module for sending, or buffered in the routing control module.
4. The broadband and narrowband integrated communication device according to claim 1, wherein an automatic networking mechanism is further provided in the device, and nodes can automatically search and join the configured peer-to-peer network.
5. The broadband and narrowband integrated communication device according to claim 1, wherein the broadband communication module is connected to the transceiving scheduling module through a broadband communication interface, and the broadband communication interface is a high-bandwidth network port; the narrow-band communication module is connected to the transceiving scheduling module through a narrow-band communication interface, and the narrow-band communication interface is a serial port.
6. The broadband and narrowband integrated communication device of claim 1, wherein the user interface comprises a PCI interface, an ethernet interface, and a SATA interface.
7. A broadband and narrowband integrated communication system, characterized in that the system comprises a plurality of ad hoc network nodes, and the ad hoc network nodes are the communication devices according to any one of claims 1 to 6.
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| CN114499632A (en) * | 2021-12-30 | 2022-05-13 | 中国电信股份有限公司卫星通信分公司 | Data transmission method based on fusion of heaven-earth satellite and broadband satellite |
| CN115103452A (en) * | 2022-06-27 | 2022-09-23 | 海能达通信股份有限公司 | Data transmission method, device and medium |
| WO2023123295A1 (en) * | 2021-12-31 | 2023-07-06 | 海能达通信股份有限公司 | Communication method and apparatus, broadband and narrowband terminal, and storage medium |
| CN117651016A (en) * | 2023-10-30 | 2024-03-05 | 北京航天晨信科技有限责任公司 | Wide-narrow route fusion system, method and product |
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