Implementation method of broadband wireless communication system in cargo cabin

Abstract

The invention discloses an implementation method of a broadband wireless communication system in a cargo cabin. The system is composed of wireless access equipment (AP), client equipment (STA) and customer preposed equipment (CPE), a plurality of STA equipment and AP equipment are sequentially arranged in each layer of cargo hold under a cargo ship deck, networking communication is carried out between the AP equipment and the STA equipment through an 802.11 ah wireless broadband protocol, and wired networking communication is carried out between the AP equipment and the AP equipment through the Ethernet; cPE equipment is arranged on a deck of a cargo ship, AP equipment in a cargo hold uses a wireless Wi-Fi HaLow module as a wireless transmission channel to construct a wireless transmission network, and voice / video data in the cargo hold is transmitted in the whole network; the AP equipment is connected with the Internet through the CPE equipment, so that the STA equipment in the whole system is accessed to the Internet, and the STA equipment and the AP equipment respectively execute business processes. According to the invention, the transmission bandwidth is wider, the speed is higher, besides traditional voice communication, video communication can be supported, and the use experience of a user is enriched.

Description

Technical Field

[0001] The invention relates to a broadband wireless communication system, and in particular to a method for realizing the broadband wireless communication system in a cargo ship cabin. Background Art

[0002] At present, the length of large domestic cargo ships reaches more than 150 meters and the height is more than 15 meters. The cargo hold under the deck is not only large in area, but also blocked by metal partitions between the cargo holds, which makes the wireless communication inside the cabin greatly affected by the environment and the communication effect is poor. The coverage of traditional broadband wireless equipment is limited and cannot provide a stable and reliable broadband network communication coverage environment for the staff inside the cabin. Therefore, a stable and reliable broadband transmission system is needed to provide broadband network services for the staff inside the ship. Summary of the invention

[0003] In view of the practical problems existing in the internal communication of large cargo ships, the purpose of the present invention is to solve the problem of broadband wireless communication coverage inside the cabins of large cargo ships based on Wi-Fi HaLow wireless communication technology, and in particular to provide a method for implementing a broadband wireless communication system in a cargo ship cabin.

[0004] The technical solution adopted by the present invention is: a method for realizing a broadband wireless communication system in a cargo ship cabin, wherein the broadband wireless communication system is composed of a wireless access device AP, a client device STA and a customer premise equipment CPE, and multiple client devices STA and the wireless access device AP are sequentially arranged in each cargo cabin under the deck of the cargo ship, and the customer premise equipment CPE is arranged on the deck of the cargo ship; the wireless access device AP and multiple client devices STA are networked and communicated through the 802.11ah wireless broadband protocol, and the AP devices are wired networked and communicated with each other through Ethernet; the wireless access device AP in the cargo cabin uses a wireless Wi-Fi HaLow module as a wireless transmission path to build a wireless transmission network, so that the voice data and video data in the cargo cabin are transmitted in the entire network; the wireless access device AP is connected to the Internet through the CPE device, so that the client device STA in the entire system is connected to the Internet, and the client device STA and the wireless access device AP respectively execute business processes.

[0005] The broadband wireless communication system in the cargo ship cabin mainly includes wireless access equipment (AP equipment for short), client equipment (STA equipment for short) and customer premise equipment (CPE equipment for short). The AP equipment and STA equipment communicate wirelessly through the 802.11ah wireless broadband protocol, and the AP equipment communicates with each other through Ethernet. The system uses the wireless Wi-Fi HaLow module as a wireless transmission path to build a wireless transmission network so that voice data and video data can be transmitted throughout the network. The upper-layer application service of the STA device processes the user's voice and video requests, encapsulates the data, and sends it to the wireless Wi-Fi HaLow module of the STA device. The data is transmitted to the wireless Wi-Fi HaLow module of the AP device through the wireless transmission network. The wireless Wi-Fi HaLow module of the AP device transmits the data to the switching processing module of the AP device for data forwarding. In this way, all STA devices in the network can communicate with each other and complete voice calls and video calls. The AP device is connected to the Internet through the CPE device, so that the STA devices in the entire system can access the Internet.

[0006] The beneficial effects of the present invention are: building a broadband wireless communication system with long transmission distance, strong penetration, low power consumption, and flexible and convenient opening. Compared with the traditional Wi-Fi wireless broadband communication system, due to the long-distance transmission characteristics of Wi-Fi HaLow technology, fewer AP devices are required to meet the full ship coverage, and the system cost is lower; due to the low power consumption characteristics of Wi-Fi HaLow technology, the equipment consumes low power and has a longer standby working time. The device can be powered by an internal battery or an external 5V-USB power supply. In this way, when opening the layout, the location is flexible, the movement is convenient, and it is less affected by the cabin layout structure. Compared with the traditional narrowband wireless communication system, the system has a wider transmission bandwidth and a higher rate. In addition to traditional voice communication, it can support video communication to enrich the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 A schematic diagram of a broadband wireless communication system according to an embodiment of the present invention; Figure 2 It is the business flow chart of STA equipment in the present invention; Figure 3 This is a service flow chart of the AP device in the present invention; Figure 4 This is a block diagram of the internal components of the STA device and the AP device in the present invention; Figure 5 for Figure 1 Schematic diagram of networking and communication between multiple STA devices and multiple AP devices. DETAILED DESCRIPTION

[0008] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0009] Reference Figure 1 The broadband wireless communication system in the cargo ship's hold is composed of a wireless access device AP, a client device STA, and a customer premise equipment CPE. Multiple client devices STA and wireless access devices AP are arranged in each cargo hold under the deck of the cargo ship in turn. The wireless access device AP and multiple client devices STA communicate in a network through the 802.11ah wireless broadband protocol, and the AP devices communicate in a wired network through Ethernet. The CPE device is arranged on the deck of the cargo ship. The wireless access device AP in the cargo hold uses the wireless Wi-Fi HaLow module as a wireless transmission path to build a wireless transmission network, so that the voice data and video data in the cargo hold are transmitted in the entire network. The wireless access device AP is connected to the Internet through the CPE device, so that the client device STA in the entire system can access the Internet. The client device STA and the wireless access device AP execute business processes respectively.

[0010] like Figure 2 As shown, the client device STA service process performs the following operations: A1. The client device STA is turned on and initialized, and scans the AP signal to enter the loop scanning state.

[0011] A2. The client device STA determines whether the AP signal meets the client device STA access requirement. If so, the AP signal is successfully accessed and enters the standby state. Otherwise, it returns to step A1.

[0012] A3. The client device STA determines whether the MMI module initiates a single call service. If so, it further determines whether the MMI module receives a called response. If so, it enters step A5. Otherwise, it prompts the user that the service initiation fails, and then returns to step A3 again.

[0013] A4. If the MMI module does not initiate a single call service, further determine whether the MMI module initiates a group call service. If it initiates a group call service, enter step A5; otherwise, further determine whether the client device STA receives a service calling this device. If it receives a service calling this device, further determine whether it is a single call service. If it is a single call service, enter step A7; if it is not a single call service, enter step A8; if it is determined that the client device STA does not receive a service calling this device, return to step A3.

[0014] A5. The voice / video processing module collects voice / video and packages the data; the wireless Wi-Fi HaLow module sends the data.

[0015] A6: The client device STA completes sending the service, and returns to step A3.

[0016] A7. The client device STA sends a service receiving response to the calling party.

[0017] A8, wireless Wi-Fi HaLow module receives data.

[0018] A9, the voice / video processing module parses the data.

[0019] A10. The MMI module prompts the user that a service calling the device is received and plays the voice / video.

[0020] A11. The client device STA completes receiving the service and returns to step A3.

[0021] After the STA device is powered on and initialized, it enters the cyclic scanning state. During this process, if an available AP device beacon is scanned, the AP device is connected, the scanning stops and the device enters the standby state. In the standby state, the STA device can initiate or receive services. According to the user's request, if the MMI module initiates a single call service (voice / video), it waits for the response of the called party. If no response is received, the user is prompted that the service has failed. If the initiated single call service receives a successful response from the called party, the voice processing module (video processing module) collects data and packages the data stream. The data packet is sent to the wireless Wi-Fi network by the wireless Wi-Fi HaLow module. If the user initiates a group call service, the called party does not need to confirm and the data is sent directly. After the service is sent, the STA device returns to the standby state. When the STA device receives a service request in the standby state, if it is a single call service, a receiving response must be sent to the caller. If it is a group call service, no response is required. Then the wireless Wi-Fi HaLow module sends the received service data to the voice processing module or the data processing module for parsing and processing according to the service type. Then the MMI module completes the corresponding human-computer interaction display. After receiving the service, the STA device returns to the standby state.

[0022] like Figure 3 As shown, the wireless access device AP service process performs the following operations: B1. The wireless access device AP is powered on for initialization, and after completion, it enters the standby state and cyclically broadcasts beacons.

[0023] B2. The client device STA accesses the wireless access device AP. The wireless Wi-Fi Halow module of the wireless access device AP receives service data in the wireless Wi-Fi network and sends the service data to the switching control module of the wireless access device AP for analysis and processing.

[0024] B3. The switching control module of the wireless access device AP determines whether the received service data is a single call service. If it is a single call service, it further determines whether the called client device STA is connected to the wireless access device AP. If it is connected to the wireless access device AP, it goes to step B5; if it is not connected to the wireless access device AP, it goes to step B6; if it is determined that it is not a single call service, it goes to the next step.

[0025] B4. The switching control module of the wireless access device AP forwards the data via Ethernet.

[0026] B5. The wireless Wi-Fi HaLow module of the wireless access device AP sends data. After the wireless access device AP completes service processing, the process returns to step B1.

[0027] B6. The switching control module of the wireless access device AP forwards the data via Ethernet. The wireless access device AP completes the service processing and returns to step B1.

[0028] The AP device is powered on for initialization, and after completion, it enters the standby state and cyclically broadcasts beacons. When a STA device accesses the AP device, the AP device can forward the service from the STA device. After the wireless Wi-Fi Halow module of the AP device receives data in the wireless Wi-Fi network, it sends the data to the switching control module for analysis and processing. If a group call service is received, the AP device needs to forward the data to the wireless network through the wireless Wi-Fi Halow module, and at the same time forward the data to other AP devices in the system through a wired method. If a single call service is received, the switching control module will determine whether the called party is a locally connected STA device. If the called party is locally connected, the AP device directly sends data through the wireless Wi-Fi Halow module. If the called party is not locally connected, the AP device forwards the data to other AP devices in the system through a wired method. When the service forwarding is completed, the AP device returns to the standby state.

[0029] like Figure 4 As shown, the STA device includes a wireless Wi-Fi HaLow module, a voice processing module, a video processing module, an MMI display module, and a power control module. The function of the STA device is to collect voice information and video information and send it to the AP device through the wireless Wi-Fi HaLow module. The STA device can also receive voice and video data from the AP device and play it. The power control module is responsible for the power supply processing of the STA device.

[0030] The AP device includes a wireless Wi-Fi HaLow module, a switching control module, and a power control module. The AP device communicates with the STA device through the wireless Wi-Fi HaLow module, and controls the networking between the AP device and the STA device and multiple AP devices through the switching control module. The power control module is responsible for the power supply processing of the AP device. The AP device supports battery power supply and also supports external 5V-USB power supply.

[0031] Example: Figure 1 As shown in the figure, a large cargo ship generally has three layers inside the cabin. AP devices are arranged in each cargo hold under the deck of the cargo ship. AP devices are installed by magnetic adsorption and can be directly adsorbed on the metal bulkhead of the cargo hold. AP devices are connected by wire. AP devices are connected to the Internet through CPE devices. In the actual layout, the number of AP devices can be appropriately increased in each cargo hold according to the signal coverage to avoid communication blind spots.

[0032] STA devices and AP devices are connected by wireless Wi-Fi. STA devices can roam between different AP devices. STA devices have voice call and video call functions.

[0033] like Figure 5 As shown, an example of service transmission between multiple APs and STAs is as follows: Currently, there are 4 STA devices and 3 AP devices. Connect STA1 and STA2 to AP1. If STA3 and STA4 are not within the signal coverage of AP1, they will not be directly connected to AP1. Connect STA3 to AP2 and STA4 to AP3. The 3 AP devices are connected via Ethernet wires, and the switching control modules of the 3 AP devices realize network data transmission.

[0034] When the user of STA1 device initiates a voice (or video) communication request to STA2 device, the MMI display module notifies the voice processing module to collect and encode the voice (or video). After the voice (or video) data is sent to the wireless Wi-Fi Halow module, it is encapsulated into a wireless data transmission packet by the wireless Wi-Fi Halow module and transmitted to the wireless Wi-Fi Halow module of AP1 device through the Wi-Fi Halow network. After receiving the data, the wireless Wi-Fi Halow module of AP1 device transfers the data to the switching control module, and then sends it to the wireless Wi-Fi Halow module of STA2 device through the wireless Wi-Fi Halow module. After receiving the data, the wireless Wi-Fi Halow module of STA2 device performs data parsing and processing through the voice (or video) module, and then plays the corresponding voice (or video) through the MMI display module.

[0035] When the user of STA1 device initiates a voice (or video) communication request to STA3 device, the MMI display module of STA1 notifies the voice processing module to collect and encode the voice (or video). After the voice (or video) data is sent to the wireless Wi-Fi Halow module of STA1, it is encapsulated into the corresponding wireless data packet by the wireless Wi-Fi Halow module and transmitted to the wireless Wi-Fi Halow module of AP1 device through the wireless Wi-Fi Halow network. After receiving the data, the wireless Wi-Fi Halow module of AP1 device transfers the data to the switching control module of AP1 device. Then the switching control module transmits the data to AP2 device through the wired network. AP2 device sends the wired data packet received through the switching control module to the wireless Wi-Fi Halow module of STA3 device through the wireless Wi-Fi Halow module. After STA4 receives the data and performs data parsing processing through the voice (or video) module, it plays the corresponding voice (or video) through the MMI display module.

[0036] When the user of STA1 device initiates a voice (or video) communication request to STA4 device, the MMI display module of STA1 device notifies the voice processing module to collect and encode the voice (or video). After the voice (or video) data is sent to the wireless Wi-Fi Halow module of STA1 device, it is encapsulated into the corresponding wireless data packet by the wireless Wi-Fi Halow module and transmitted to the wireless Wi-Fi Halow module of AP1 device through the Wi-Fi Halow network. After receiving the data, the wireless Wi-Fi Halow module of AP1 device transfers the data to the switching control module of AP1 device. Then the data is sent to AP2 device through wired network transmission. AP2 device forwards the data. The data is transmitted in sequence until AP3 device connected to STA4 device. AP3 device sends the wired data packet received through the switching control module to the wireless Wi-Fi Halow module of STA4 through the wireless Wi-Fi Halow module. After STA4 receives the data and performs data parsing and processing through the voice (or video) module, it plays the corresponding voice (or video) through the MMI display module.

[0037] If a group call service is received, the AP device needs to forward the data to the wireless network through the wireless Wi-Fi Halow module, and also forward the data to other AP devices in the system through wired means. If a single call service is received, the switching control module will determine whether the called party is a STA device connected to this AP device. If the called party is connected locally, the AP device directly sends the data through the wireless Wi-Fi Halow module. If the called party is not connected locally, the AP device forwards the data to other AP devices in the system through wired means. When the service forwarding is completed, the AP device returns to standby mode.

[0038] In the present invention, the system adopts Wi-Fi Halow communication technology. Under theoretical conditions, the transmission distance can reach 1 km (rate 100Kbps). On large cargo ships with an actual length of about 150 to 300 meters, it can provide a data transmission capacity of more than 2Mbps to meet the voice and video communication needs on board.

[0039] Since there are many types of large cargo ships, the internal structure and power supply conditions of the cargo hold are also different. This leads to different requirements for the installation of wireless communication equipment on different cargo ships. This requires that the equipment opening and layout of the system must be sufficiently convenient and flexible, and there must also be certain requirements for power supply and standby time.

[0040] Wi-Fi HaLow is an IEEE 802.11ah wireless network protocol. The operating frequency is 900MHz. 802.11ah (HaLow) was launched by the Wi-Fi Alliance in 2016. Compared with 802.11ad (operating in the 60GHz band), the operating frequency band below 1 GHz enables it to better penetrate walls and obstacles. Compared with traditional Wi-Fi (802.11a / b / g / n) operating in the 2.4GHz and 5GHz bands, it consumes less power and has a wider coverage range. Due to the characteristics of low power consumption, long distance, large capacity access and low latency, 802.11ah just solves the communication needs inside large cargo ships.

Claims

1. A method for implementing a broadband wireless communication system in a cargo ship cabin, characterized in that: The broadband wireless communication system consists of a wireless access device AP, a client device STA, and a customer premise equipment CPE. Multiple customer premise equipment STAs and wireless access devices AP are sequentially arranged in each cargo hold under the deck of the cargo ship, and the customer premise equipment CPE is arranged on the deck of the cargo ship. The wireless access device AP and multiple client devices STA communicate through the 802.11ah wireless broadband protocol, and the AP devices communicate through Ethernet. The wireless access device AP in the cargo hold uses the wireless Wi-Fi HaLow module as a wireless transmission path to build a wireless transmission network, so that the voice data and video data in the cargo hold can be transmitted throughout the network; The wireless access device AP is connected to the Internet through the CPE device, thereby enabling the client device STA in the entire system to access the Internet. The client device STA and the wireless access device AP execute service processes respectively.

2. The method for implementing a broadband wireless communication system in a cargo ship cabin according to claim 1, characterized in that: The client device STA service process performs the following operations: A1. The client device STA is turned on and initialized, and scans the AP signal to enter the loop scanning state; A2, the client device STA determines whether the AP signal meets the client device STA access requirement. If so, it successfully accesses the signal transmitted by the AP and enters the standby state. Otherwise, it returns to step A1; A3, the client device STA determines whether the MMI module initiates a single call service. If so, it further determines whether the MMI module receives a called response. If so, it proceeds to step A5. Otherwise, it prompts the user that the service initiation fails, and then returns to step A3 again. A4. If the MMI module does not initiate a single call service, it is further determined whether the MMI module initiates a group call service. If it initiates a group call service, it proceeds to step A5. Otherwise, it is further determined whether the client device STA receives a service calling the device. If it receives a service calling the device, it is further determined whether it is a single call service. If it is a single call service, it proceeds to step A7. If it is not a single call service, it proceeds to step A8. If it is determined that the client device STA has not received the service calling the device, the process returns to step A3; A5, the voice / video processing module collects voice / video and packages the data; the wireless Wi-Fi HaLow module sends the data; A6: The client device STA sends the service and ends, and returns to step A3; A7, the client device STA sends a service receiving response to the calling party; A8, wireless Wi-Fi HaLow module receives data; A9, voice / video processing module parses data; A10, MMI module prompts the user to receive a service calling this device and plays the voice / video; A11. The client device STA completes receiving the service and returns to step A3.

3. The method for implementing a broadband wireless communication system in a cargo ship cabin according to claim 1, characterized in that: The wireless access device AP service process performs the following operations: B1. The wireless access device AP is powered on for initialization, and after completion, it enters the standby state and cyclically broadcasts beacons; B2, the client device STA accesses the wireless access device AP, the wireless Wi-Fi Halow module of the wireless access device AP receives the service data in the wireless Wi-Fi network, and sends the service data to the switching control module of the wireless access device AP for analysis and processing; B3, the switching control module of the wireless access device AP determines whether the received service data is a single call service. If it is a single call service, it further determines whether the called client device STA is connected to the wireless access device AP. If it is connected to the wireless access device AP, it goes to step B5; if it is not connected to the wireless access device AP, it goes to step B6; if it is determined that it is not a single call service, it goes to the next step; B4, the switching control module of the wireless access device AP forwards data via Ethernet; B5, the wireless Wi-Fi HaLow module of the wireless access device AP sends data; The wireless access device AP service processing is completed, and the process returns to step B1; B6, the switching control module of the wireless access device AP forwards data via Ethernet; The wireless access device AP service processing is completed and the process returns to step B1.

Images