CN118074804A - Integral half-duplex optical fiber-wireless communication architecture - Google Patents
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Abstract
The invention discloses an integral half-duplex optical fiber-wireless communication architecture, which comprises a half-duplex optical communication transceiver system and a Wi-Fi wireless transceiver system, wherein the half-duplex optical communication transceiver system is used for switching signal types, the Wi-Fi wireless transceiver system is used for amplifying electromagnetic signals, and the optical transceiver and the Wi-Fi wireless communication transceiver are combined for optical communication so that the optical transceiver and the Wi-Fi transceiver work together. The technical development route of the dual-system and chip integration improves the system integration level, and the high integration level of the whole communication architecture not only effectively avoids the electric interconnection between the optical transceiver system and the wireless transceiver system in the original scheme and improves the practical application effect of the optical fiber as a high-speed signal transmission medium, but also further brings about the improvement of the convenience of system installation and maintenance and the reduction of related cost; and the architecture further reduces the overall cost of the system by reducing the number of optics necessary for the system. The invention has the potential of promoting the further floor development of optical fiber communication in thousands of households.
Description
Technical Field
The invention belongs to the technical field of optical fiber communication, and particularly relates to an integral half-duplex optical fiber-wireless communication architecture.
Background
The rapid internet traffic growth enables new one-wave installations and upgrades of fiber optic access networks (e.g., fiber to the home), and new forms of high-speed networks (e.g., fiber to the room) will further expand the high-speed fiber optic access range from the home portal to each room, requiring a large number of fiber optic links to be deployed within the home. Further deployment of the optical network units into rooms may lead to an increase in the number of optical components and an increase in costs. For a large consumer market, whether the system can be implemented at low cost would be a key factor affecting its development. Thus, new communication architectures with lower costs are urgently needed, not only for fiber-to-room, but also for the forthcoming fiber-to-everything paradigm shift.
Most existing structures and methods in PON transceivers employ two different wavelengths of light for information transmission on the transmitter (Tx) and receiver (Rx) paths to form a full duplex mode optical transceiver. They not only require separate Tx and Rx optics, but also inevitably double the optical alignment, bonding and packaging costs, which is contrary to the low cost requirements for future large scale applications of the system.
In the existing optical fiber-to-Wi-Fi solution, a full-duplex optical fiber transceiver system is separately interconnected with a Wi-Fi wireless transceiver system, the optical fiber transceiver system finishes the mutual conversion of signal types between photoelectricity, and interacts with the Wi-Fi wireless transceiver system in other electric interconnection modes such as coaxial lines. For electrical interconnection, a common approach is to use coaxial cables. Coaxial cables are susceptible to noise, radio frequency interference, and electromagnetic interference due to their physical structure that allows radio frequency energy to be transmitted within their shield, but due to their limited bandwidth, have large losses. And coaxial cables are also limited by their physical components, for example, if the coaxial cable is bent too much, the shielding effectiveness of the coaxial cable may be interrupted. This is very unfriendly to the increase of data rate and network bandwidth.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an integral half-duplex optical fiber-wireless communication architecture aiming at the defects in the prior art, and the technical problems that the rate bottleneck exists in signal transmission and the cost of an optical network unit is high due to insufficient integration of an optical fiber into a room are solved by converting an optical fiber transceiving system into a half-duplex working mode and combining the optical fiber transceiving system with a Wi-Fi wireless transceiving system.
The invention adopts the following technical scheme:
An integral half-duplex optical fiber-wireless communication architecture comprises a half-duplex optical communication transceiver system and a Wi-Fi wireless transceiver system, wherein the half-duplex optical communication transceiver system is used for switching signal types, the Wi-Fi wireless transceiver system is used for amplifying electromagnetic signals, and the optical transceiver and the Wi-Fi wireless communication transceiver are combined for enabling the optical transceiver to work together.
Preferably, the half-duplex optical communication transceiving system comprises a dual-mode optical device, wherein a Cathode Cathiode of the dual-mode optical device is grounded or connected with a 3.3V power supply through an optical transceiving integrated switch, and an Anode Anode of the dual-mode optical device is divided into two paths through the optical transceiving integrated switch and is connected with the Wi-Fi wireless transceiving system through an optical receiver and an optical transmitter respectively.
More preferably, the optical receiver is a transimpedance amplifier TIA.
More preferably, the optical transmitter is a laser Driver.
More preferably, when the system is operated in the signal receiving mode, the spdt_s side switch of the integrated optical transceiver switch is turned on with the optical receiver port connection portion and turned off with the optical transmitter port connection portion; the SPDT_P side switch of the optical transceiver switch is connected with high potential and disconnected with the ground connection part, and the dual-mode optical device is given reverse bias voltage to work as a photoelectric detector.
More preferably, when the system is operated in the signal transmission mode, the spdt_s side switch of the integrated optical transceiver switch is connected to the optical transmitter port connection portion and disconnected from the optical receiver port connection portion; the SPDT_P side switch of the optical transmitting/receiving integrated switch is connected to the ground, disconnected from the high potential connection part, and the dual-mode optical device is given a forward bias voltage to operate as a laser.
Preferably, the Wi-Fi wireless transceiver system includes an antenna, and the antenna is divided into two paths by a wireless transceiver switch, and is connected to an optical receiver and an optical transmitter of the half-duplex optical communication transceiver system by a wireless transmitter and a wireless receiver, respectively.
More preferably, the wireless receiver is a low noise amplifier LNA.
More preferably, the wireless transmitter is a power amplifier PA.
More preferably, the integrated wireless transceiver switch connects the antenna to the wireless transmitter when operating in the signal receiving mode; when the wireless transceiver is operated in a signal transmitting mode, the wireless transceiver switch connects the antenna with the wireless receiver.
Compared with the prior art, the invention has at least the following beneficial effects:
An integral half-duplex optical fiber-wireless communication architecture is composed of an optical transceiver system and a Wi-Fi wireless transceiver system, and the two systems are in half-duplex working modes as the same as the overall architecture. On one hand, a receiver of the optical transceiver system works together with a transmitter in the Wi-Fi wireless transceiver system to realize the transmission of signals from the optical fiber to the user side as a receiving mode of the whole communication architecture; on the other hand, the transmitter of the optical transceiver system works together with the receiver of the Wi-Fi wireless transceiver system to complete the transmission of signals from the user end to the optical fiber as a transmission mode of the whole communication architecture. The physical switching of the working mode of the communication architecture is completed by the common control of an optical fiber receiving and transmitting system side mode switching switch and a Wi-Fi wireless receiving and transmitting system side mode switching switch in the whole system. The invention not only aims to realize the unification of the integration of the optical transceiver system and the Wi-Fi wireless transceiver system in the system working mode, but also aims to physically realize the same-chip integration of the double systems, namely the whole communication architecture system comprises the optical transceiver, the Wi-Fi wireless transceiver and two side switches which are integrated in the same chip.
Furthermore, due to the half-duplex working mode of the Wi-Fi wireless receiving and transmitting system, the framework allows the full-duplex optical communication receiving and transmitting system to be changed into the half-duplex working mode, and the full-duplex optical communication receiving and transmitting system is matched with the dual-mode optical devices to work together, so that the number of the optical devices necessary for the system can be reduced, and the overall cost of the system is further reduced.
Further, the optical receiver represented by the transimpedance amplifier TIA is matched with a dual-mode optical device to convert an optical signal transmitted by an optical fiber into an electrical signal.
Further, an optical transmitter represented by a laser Driver is matched with a dual-mode optical device to convert an electric signal transmitted by the Wi-Fi wireless transceiver into an optical signal.
Further, when the system is in the receiving mode, the switch on the side of the optical transceiver system enables the optical receiver to be connected into the system for receiving the optical signals.
Further, when the system is in the transmitting mode, the switch at one side of the optical transceiver system connects the optical transmitter to the system to transmit the optical signal.
Further, the Wi-Fi wireless receiving and transmitting system carries out wireless receiving and transmitting on electric signals through an antenna, and carries out wireless communication with various electronic products of users.
Further, when the system enters a transmission mode, the wireless receiver represented by the low noise amplifier LNA receives information from a user via an antenna, and drives the optical transmitter to convert the information into an optical signal to be transmitted.
Further, the wireless transmitter represented by the PA transmits an electrical signal from the optical receiver to the ue via the antenna when the system enters the receiving mode.
In summary, the technical development route of the dual-system and chip integration of the invention improves the system integration level, and the high integration level of the whole communication architecture not only effectively avoids the electrical interconnection between the optical transceiver system and the wireless transceiver system in the original scheme and improves the practical application effect of the optical fiber as a high-speed signal transmission medium, but also further brings about the improvement of the convenience of system installation and maintenance and the reduction of related cost; and the architecture further reduces the overall cost of the system by reducing the number of optics necessary for the system. The invention has the potential of promoting the further floor development of optical fiber communication in thousands of households.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of the connection of an overall half-duplex fiber-radio communication architecture of the present invention;
FIG. 2 is a schematic diagram of the system receive mode operation of the overall half-duplex fiber-radio communication architecture of the present invention;
fig. 3 is a schematic diagram of the system transmission mode operation of the overall half-duplex fiber-radio communication architecture of the present invention.
Wherein: 1. a dual mode optical device; 2. an optical transceiver switch; 3. a wireless receiving and transmitting integrated switch; 4. a photodetector; 5. a laser.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "one side", "one end", "one side", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
Various structural schematic diagrams according to the disclosed embodiments of the present invention are shown in the accompanying drawings. The figures are not drawn to scale, wherein certain details are exaggerated for clarity of presentation and may have been omitted. The shapes of the various regions, layers and their relative sizes, positional relationships shown in the drawings are merely exemplary, may in practice deviate due to manufacturing tolerances or technical limitations, and one skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions as actually required.
The present invention provides an overall half-duplex fiber-radio communication architecture that reduces the cost of the optical transceiver by approximately two-fold by reusing Tx and Rx optics, and importantly, the half-duplex optical transceiver architecture provides high data rates and fast configurability to meet the needs of future low-cost fiber-optic access applications. Integration of Wi-Fi receivers with optical communication architecture enables the use of Radio-over-Fiber (ROF) technology for direct transmission of Radio signals. The optical fiber has fewer reflections and less attenuation compared with the coaxial cable, so that the transmission bandwidth of the optical fiber is also larger, and the transmission of higher-frequency signals is facilitated.
Referring to fig. 1, the overall half-duplex optical fiber-wireless communication architecture of the present invention has two operation modes, namely a receiving mode and a transmitting mode, and includes a half-duplex optical communication transceiver system and a Wi-Fi wireless transceiver system, wherein the half-duplex optical communication transceiver system is used for switching signal types, the Wi-Fi wireless transceiver system is used for amplifying electromagnetic signals, and the optical transceiver and the Wi-Fi wireless transceiver are combined to operate together through the operation mechanisms of the two transceivers.
The half-duplex optical communication transceiving system comprises a dual-mode optical device 1, an optical transceiving integrated switch 2, an optical receiver represented by a transimpedance amplifier TIA and an optical transmitter represented by a laser Driver, wherein a Cathode Cathiode of the dual-mode optical device 1 is grounded or connected with a 3.3V power supply through the optical transceiving integrated switch 2, and an Anode Anode of the dual-mode optical device 1 is divided into two paths through the optical transceiving integrated switch 2 and is respectively connected with a power amplifier PA and a low noise amplifier LNA of the Wi-Fi wireless transceiving system through the transimpedance amplifier TIA and the laser Driver.
The Wi-Fi wireless transceiver system comprises an antenna, a wireless transceiver integrated switch 3, a wireless receiver represented by a low noise amplifier LNA and a wireless transmitter represented by a power amplifier PA, wherein the public end of the wireless transceiver integrated switch 3 is connected with the antenna, the normally open end is connected with a transimpedance amplifier TIA of the half-duplex optical communication transceiver system through the power amplifier PA, and the normally closed end is connected with a laser Driver of the half-duplex optical communication transceiver system through the low noise amplifier LNA.
Referring to fig. 2, when operating in the signal receiving mode, the integrated wireless transceiver switch 3 connects the antenna to the power amplifier PA, and the power amplifier PA is connected to the detector 4 through the integrated optical transceiver switch 2.
Referring to fig. 3, when operating in the signal transmitting mode, the integrated wireless transceiver switch 3 connects the antenna to the low noise amplifier LNA, and the low noise amplifier LNA is grounded via the laser Driver, the integrated optical transceiver switch 2 and the laser 5.
The invention relates to an integral half-duplex optical fiber-wireless communication architecture, which has the following working principle:
When the system works in a signal receiving mode, the SPDT_S side switch of the optical transceiver integrated switch 2 is communicated with the TIA port connection part of the transimpedance amplifier and disconnected with the Driver port connection part of the laser Driver; the spdt_p side switch of the integrated optical transceiver switch 2 is turned on at a high potential, and is turned off from the ground connection, and a reverse bias voltage (cathode potential higher than anode) is applied to the dual mode optical device 1, so that it operates as a photodetector 4.
When the system works in a signal emission mode, the SPDT_S side switch of the optical transceiver integrated switch 2 is connected with the connection part of the Driver port of the laser Driver and disconnected with the connection part of the TIA port of the transimpedance amplifier; the spdt_p side switch of the integrated optical transceiver switch 2 is turned on and off from the high potential connection portion, and the dual mode optical device 1 is given a forward bias voltage (anode potential is higher than cathode) to operate as the laser 5.
In summary, according to the integral half-duplex optical fiber-wireless communication architecture, the technical development route of the integration of the dual systems and the chips improves the system integration level, and the high integration level of the integral communication architecture not only effectively avoids the electrical interconnection between the optical transceiver system and the wireless transceiver system in the original scheme, improves the practical application effect of the optical fiber as a high-speed signal transmission medium, and further brings about the improvement of the convenience of system installation and maintenance and the reduction of related cost; the architecture further reduces the overall cost of the system by reducing the number of optical devices necessary for the system; the invention has the potential of promoting the further floor development of optical fiber communication in thousands of households.
The above is only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (10)
1. The integral half-duplex optical fiber-wireless communication architecture is characterized by comprising a half-duplex optical communication transceiver system and a Wi-Fi wireless transceiver system, wherein the half-duplex optical communication transceiver system is used for switching signal types, the Wi-Fi wireless transceiver system is used for amplifying electromagnetic signals, and the optical transceiver and the Wi-Fi wireless communication transceiver are combined for optical communication so that the optical transceiver and the Wi-Fi transceiver work together.
2. The overall half-duplex fiber-radio communication architecture according to claim 1, wherein the half-duplex optical communication transceiver system comprises a dual-mode optical device (1), a Cathode captode of the dual-mode optical device (1) is grounded via an optical transceiver integrated switch (2) or is connected to a 3.3V power supply, and an Anode inode of the dual-mode optical device (1) is divided into two paths via the optical transceiver integrated switch (2) and is connected to a Wi-Fi wireless transceiver system via an optical receiver and an optical transmitter respectively.
3. The overall half-duplex fiber-radio communication architecture according to claim 2, wherein the optical receiver is a transimpedance amplifier TIA.
4. The monolithic half duplex fiber-radio communications architecture of claim 2, wherein the optical transmitter is a laser Driver.
5. The overall half-duplex fiber-radio communication architecture according to claim 2, wherein the spdt_s side switch of the integrated optical transceiver switch (2) is turned on and off from the optical receiver port connection portion and the optical transmitter port connection portion when the system is operating in the signal reception mode; the SPDT_P side switch of the optical transmitting/receiving integrated switch (2) is connected with a high potential and disconnected with a ground connection part, and the dual-mode optical device (1) is given reverse bias voltage to work as a photoelectric detector (4).
6. The overall half-duplex fiber-radio communication architecture according to claim 2, wherein the spdt_s side switch of the integrated optical transceiver switch (2) is turned on and off from the optical transmitter port connection portion and the optical receiver port connection portion when the system is operating in the signal transmission mode; the SPDT_P side switch of the optical transmitting/receiving integrated switch (2) is connected to the ground, disconnected from the high potential connection part, and the dual-mode optical device (1) is given a forward bias voltage to operate as a laser (5).
7. The overall half-duplex fiber-radio communication architecture of claim 1, wherein the Wi-Fi transceiver system comprises an antenna that is split into two paths via a wireless transceiver switch (3) and that is connected to an optical receiver and an optical transmitter of the half-duplex optical communication transceiver system via a wireless transmitter and a wireless receiver, respectively.
8. The overall half-duplex fiber-radio communication architecture according to claim 7, wherein the radio receiver is a low noise amplifier LNA.
9. The overall half-duplex fiber-radio communication architecture according to claim 7, wherein the radio transmitter is a power amplifier PA.
10. The overall half-duplex fiber-radio communication architecture according to claim 7, wherein the integrated radio transceiver switch (3) connects the antenna to the radio transmitter when operating in the signal receiving mode; when the wireless transceiver is operated in a signal transmission mode, the wireless transceiver switch (3) connects the antenna with the wireless receiver.
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