Rectangular area multi-target mobile communication system and method

Abstract

The invention relates to the technical field of communication, in particular to a rectangular area multi-target mobile communication system and method, and the method comprises the following steps: carrying out node downlink transmission through digital multiplexing; performing information uplink based on wavelength adjustment; laser wavelength control and handshake protocol link establishment are adopted to carry out moving target cross-region access; the invention relates to cross-regional access of handshake link establishment based on wavelength management. According to the invention, the digital multiplexing technology of the LED emission unit is utilized, and multiple paths of signals can be merged and then downloaded at a high speed, so that parallel communication of a plurality of moving targets is realized, and the communication efficiency is remarkably improved. Meanwhile, through the wavelength management and distribution unit, the dynamic management of the wavelength used by the moving target is realized, the wavelength conflict is avoided, and the communication stability is ensured, so that the problem of low stability of the existing rectangular region multi-target mobile communication method is solved.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a rectangular area multi-target mobile communication system and method. Background Art

[0002] In existing mobile communication technologies, mobile communications for multiple targets in a rectangular area often face many challenges. On the one hand, how to efficiently achieve downlink signal transmission and cover multiple mobile targets at the same time is an urgent problem to be solved. Traditional wireless communication methods may have problems such as signal interference and limited coverage, which makes it difficult to meet the needs of large-scale, multi-target mobile communications.

[0003] On the other hand, the transmission of uplink signals also faces many technical challenges. As the number and location of mobile targets are constantly changing, how to achieve simultaneous uploading of multiple mobile targets and avoid signal conflicts and interference is a complex and important issue. In addition, in order to achieve cross-regional communication, it is also necessary to solve the wavelength conflict problem that moving targets may encounter when entering a new area. Summary of the invention

[0004] The object of the present invention is to provide a rectangular area multi-target mobile communication system and method, aiming to solve the problem of low stability of the existing rectangular area multi-target mobile communication method.

[0005] To achieve the above object, in a first aspect, the present invention provides a rectangular area multi-target mobile communication method, comprising the following steps:

[0006] Use digital multiplexing for node downlink transmission;

[0007] Information uplink based on wavelength adjustment;

[0008] Laser wavelength control and handshake protocol are used to establish links for cross-region access of moving targets;

[0009] Cross-region access based on wavelength management handshake link establishment.

[0010] Among them, in “using digital multiplexing for node downlink transmission”, the following steps are included:

[0011] Adjust the 10 channels of information to be transmitted to the same rate;

[0012] Merge 10 signals into 1 high-speed signal, modulate it and transmit it downstream;

[0013] After receiving the downlink signal, the mobile access device identifies and extracts the corresponding bit stream information, and then performs bit rate recovery.

[0014] Among them, in "information uplink based on wavelength adjustment", the information uplink adopts an adjustable laser with a wavelength range of 820nm-950nm.

[0015] In a second aspect, a rectangular area multi-target mobile communication system is provided, which is used in the rectangular area multi-target mobile communication method described in the first aspect, and comprises an upper fixed module and a lower mobile module, wherein the upper fixed module is connected to the lower mobile module.

[0016] Among them, the upper fixed module includes an LED emitting unit and an infrared receiving unit, and the lower movable module includes a visible light receiving unit and an infrared emitting unit; the LED emitting unit is connected to the infrared receiving unit, and the visible light receiving unit is connected to the infrared emitting unit.

[0017] A rectangular area multi-target mobile communication method of the present invention includes the following steps: using digital multiplexing for node downlink transmission; performing information uplink based on wavelength adjustment; using laser wavelength control and handshake protocol link building for cross-regional access of moving targets; and cross-regional access based on wavelength management handshake link building. The present invention utilizes the digital multiplexing technology of the LED transmitting unit, which can merge multiple signals and transmit them down at high speed, thereby realizing parallel communication with multiple mobile targets and significantly improving communication efficiency. At the same time, through the wavelength management and allocation unit, dynamic management of the wavelength used by the mobile target is realized, wavelength conflicts are avoided, and the stability of communication is guaranteed, thereby solving the problem of low stability of the existing rectangular area multi-target mobile communication method. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 The present invention provides a block diagram of the principle of a rectangular area multi-target mobile communication method.

[0020] Figure 2 It is a schematic diagram of the principle of realizing 10-channel information transmission by using digital multiplexing technology.

[0021] Figure 3 This is a schematic diagram of the uplink of wavelength division multiplexing and demultiplexing information based on wavelength adjustment. ;

[0022] Figure 4 This is a schematic diagram of wavelength management system.

[0023] Figure 5The invention is a flow chart of a rectangular area multi-target mobile communication method.

[0024] Figure 6 It is a flow chart of using digital multiplexing for node downlink transmission.

[0025] Figure 7 It is a schematic diagram of a rectangular area multi-target mobile communication system.

[0026] Figure 8 It is a schematic diagram of the upper fixed module.

[0027] Fig. 9 is a schematic diagram of the mobile module below.

[0028] In the figure: 1-upper fixed module, 11-LED transmitting unit, 12-infrared receiving unit, 2-lower movable module, 21-visible light receiving unit, 22-infrared transmitting unit. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0030] See also Figures 1 to 6 In a first aspect, the present invention provides a rectangular area multi-target mobile communication method, comprising the following steps:

[0031] S1 uses digital multiplexing for node downlink transmission;

[0032] S11 adjusts the 10 channels of information to be transmitted to the same rate;

[0033] Specifically, the 10 channels of information to be transmitted are adjusted to the same rate (2 Mbps) through a bit rate adjuster.

[0034] S12 combines 10 signals into one high-speed signal, modulates it and transmits it downstream;

[0035] Specifically, 10 signals are combined into 1 high-speed signal (20 Mbps) through clock timing and using a digital multiplexer, and the signal modulates the LED and transmits it downstream.

[0036] After receiving the downlink signal, the S13 mobile access device identifies and extracts the corresponding bit stream information, and then performs bit rate recovery.

[0037] Specifically, after receiving the downlink signal, the mobile access device identifies and extracts the corresponding code stream information, and then performs code rate recovery. At this point, the downlink communication of 10 channels of signals is completed.

[0038] S2 performs information uplink based on wavelength adjustment;

[0039] The information uplink uses an adjustable laser with a wavelength range of 820nm-950nm.

[0040] Specifically, the technical approach to realize multi-user uplink transmission based on wavelength division multiplexing and demultiplexing of tunable wavelength infrared laser is as follows: Figure 3 As shown, in order to upload the information of 10 moving targets at the same time, the transmitting laser adopts an adjustable laser with a wavelength range of 820nm-950nm. The laser power in this band is large, and there are also mature SOA amplifier devices. At the receiving end, the 10 received wavelengths are filtered and detected and input into the processing circuit. The detection device in this band has a large photosensitive surface (diameter of more than 3mm) and a high detection sensitivity (-45dBm@4Mbps) compared to the O, C, and L bands commonly used in optical fiber communications.

[0041] S3 uses laser wavelength control and handshake protocol to establish links for cross-region access of moving targets;

[0042] Specifically, considering that moving targets need to communicate across regions within kd, in order to solve the wavelength conflict problem (such as the wavelength used by the moving target is the same as the wavelength used by the original target entering the area), the study adopts wavelength management to realize the dynamic allocation of wavelengths used by moving targets in the area.

[0043] S4 is a cross-region access based on the handshake link establishment of wavelength management.

[0044] Specifically, Figure 4 As shown, the wavelength management system manages the wavelengths in use and the wavelengths to be used, wherein one channel to be used is loaded with information of one wavelength λn to be used and is in the information transmission state (i.e., it only contains wavelength information and runs without load). When a moving target enters the area, the visible light receiving unit 21, after receiving the wavelength signal, adjusts the laser wavelength to the assigned wavelength λn and uploads it. After the kd node receives the upload signal, the handshake link is established. When the moving target leaves the area, λn enters the waiting queue to be used. This wavelength management and adjustable upload laser wavelength realize cross-regional access and wavelength conflict management.

[0045] See also Figures 7 to 9In the second aspect, a rectangular area multi-target mobile communication system is provided, which is used in the rectangular area multi-target mobile communication method described in the first aspect, and comprises an upper fixed module 1 and a lower mobile module 2, wherein the upper fixed module 1 is connected to the lower mobile module 2.

[0046] The upper fixed module 1 includes an LED emitting unit 11 and an infrared receiving unit 12, and the lower movable module 2 includes a visible light receiving unit 21 and an infrared emitting unit 22; the LED emitting unit 11 is connected to the infrared receiving unit 12, and the visible light receiving unit 21 is connected to the infrared emitting unit 22.

[0047] In this embodiment, the upper fixed module 1 is composed of an LED transmitting unit 11 and an infrared receiving unit 12, wherein: the LED transmitting unit 11 adopts a digital multiplexing method to merge multiple signals and then modulate the LED, and also contains a wavelength management and allocation unit to manage the wavelength used by the mobile target in the LED coverage area; the infrared receiving unit 12 is composed of three parts: receiving optics, filtering and detection processing, and completes the reception and processing of multiple different wavelength signals uploaded by the mobile target. The lower mobile module 2 is composed of a visible light receiving unit 21 and an infrared transmitting unit 22. The visible light receiving unit 21 completes the reception of the downlink signal, the selection of data and the recovery of the code rate, and the laser in the infrared transmitting unit 22 converts the wavelength to the corresponding wavelength according to the wavelength allocation of the upper fixed device, and then uploads it through the optical unit.

[0048] Beneficial effects:

[0049] 1. The present invention can combine the data of multiple signal sources in the time domain or frequency domain through digital multiplexing technology, thereby realizing the simultaneous transmission of multiple signals. This feature enables the downlink signal to efficiently cover multiple mobile targets, solving the problem of limited signal coverage in traditional wireless communication methods. Through digital multiplexing, the signal can be accurately encoded and modulated, thereby reducing mutual interference between signals. This helps to improve the reliability and stability of signal transmission, especially in the complex environment of multi-target mobile communication.

[0050] 2. The present invention achieves simultaneous uploading of multiple mobile targets: The wavelength adjustment technology allows different mobile targets to use different wavelengths for uplink signal transmission, thereby avoiding signal conflicts and interference. This feature enables multiple mobile targets to upload information simultaneously, improving the capacity and efficiency of the communication system. Dynamic adaptation to changes in the number and location of mobile targets: Since the number and location of mobile targets are constantly changing, the uplink transmission technology based on wavelength adjustment can dynamically adjust the wavelength allocation to adapt to such changes. This helps to maintain the stability and reliability of the communication system.

[0051] 3. The present invention can accurately control the wavelengths used by different moving targets through laser wavelength control technology, thereby avoiding the wavelength conflict problem that may be encountered in cross-regional communication. This helps to achieve seamless access and communication between moving targets in different areas. Improve communication security: The handshake protocol link establishment process can ensure the identity authentication and key exchange of both communicating parties, thereby improving the security of the communication system. This is of great significance for protecting sensitive information and preventing illegal access.

[0052] 4. The present invention realizes seamless switching of cross-regional communication: The handshake link establishment technology based on wavelength management can ensure that the moving target can quickly establish a communication link when entering a new area, thereby realizing seamless switching of cross-regional communication. This helps to improve the continuity and stability of the communication system. Optimize resource allocation: Through wavelength management, dynamic allocation and optimization of communication resources can be achieved. This helps to improve the overall performance and efficiency of the communication system, especially in the complex environment of multi-target mobile communication.

[0053] What is disclosed above is only a preferred embodiment of a rectangular area multi-target mobile communication system and method of the present invention. Of course, this cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A rectangular area multi-target mobile communication method, characterized in that: The following steps are involved: Use digital multiplexing for node downlink transmission; Information uplink based on wavelength adjustment; Laser wavelength control and handshake protocol are used to establish links for cross-region access of moving targets; Cross-region access based on wavelength management handshake link establishment.

2. The rectangular area multi-target mobile communication method according to claim 1, characterized in that: In "using digital multiplexing for node downlink transmission", the following steps are included: Adjust the 10 channels of information to be transmitted to the same rate; Merge 10 signals into 1 high-speed signal, modulate it and transmit it downstream; After receiving the downlink signal, the mobile access device identifies and extracts the corresponding bit stream information, and then performs bit rate recovery.

3. The rectangular area multi-target mobile communication method according to claim 1, characterized in that: In "information uplink based on wavelength adjustment", the information uplink uses an adjustable laser with a wavelength range of 820nm-950nm.

4. A rectangular area multi-target mobile communication system, used in the rectangular area multi-target mobile communication method according to any one of claims 1 to 3, characterized in that: It comprises an upper fixed module and a lower movable module, wherein the upper fixed module is connected to the lower movable module.

5. The rectangular area multi-target mobile communication system as claimed in claim 4, characterized in that: The upper fixed module includes an LED emitting unit and an infrared receiving unit, and the lower movable module includes a visible light receiving unit and an infrared emitting unit; the LED emitting unit is connected to the infrared receiving unit, and the visible light receiving unit is connected to the infrared emitting unit.

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