CN103634808A - Wireless network system - Google Patents
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Abstract
The invention discloses a wireless network system in order to solve the problem that a small cell cannot be connected by laying a wired network in outdoor application scenarios such as an offshore area or a mobile vehicle/vessel in the prior art. The system comprises a signaling gateway and a security gateway which are connected with an LTE system core network. The signaling gateway is connected with at least one first SC-IDU through the security gateway. The first SC-IDUs are connected to the LTE system core network through the security gateway. Each first SC-IDU is connected with a first SC-ODU. Each small cell is connected with a second SC-IDU. Each second SC-IDU is connected with a second SC-ODU. The security gateway and the small cells communicate in a satellite communication mode through the first SC-IDUs, the first SC-ODUs, the second SC-IDUs and the second SC-ODUs.
Description
Technical Field
The present invention relates to a mobile communication system, and more particularly, to a wireless network system.
Background
A micro base station (Small cell) is a mobile communication capability that can provide indoor and outdoor wireless coverage at a maximum data rate, and does not require the installation of a micro cellular node.
The micro base station is an emerging hot spot technology, is considered as one of means for solving mobile signal coverage in the industry, and is also a way for fusing a fixed network and a mobile network. The micro base station has small transmitting power and small volume, works in an authorized frequency band, generally has a coverage radius of 5-20 meters, and can provide voice and data services.
The micro base station technology has the advantages that not only can fixed network resources be utilized to absorb 3G and 4G services, but also the service flow pressure of a macro network is reduced; the method can also make up for the deficiency of network coverage, improve the quality of mobile signal coverage and the service experience of users, and enhance the stickiness of users. After large-scale application, the popularization cost of the micro base station and the operation cost (lower than that of a macro network) of the service can be reduced, and the micro base station becomes a good tool for an operator to win users.
The micro base station wireless coverage system generally adopts a fixed Network cable, a Passive Optical Network (PON), a Packet Transport Network (PTN), and the like as a backhaul Network, and is accessed to a core Network of a mobile Network through a security gateway and a signaling gateway. However, in some outdoor scenarios, wired transmission resources such as Asymmetric Digital Subscriber Line (ADSL), PON, PTN, and the like cannot be obtained, for example, optical fibers cannot be laid; in disaster relief areas such as earthquake and flood, the original ADSL, PON, PTN and other wired transmission resources are damaged; as well as offshore areas, remote areas, mobile vehicles and ships and the like, the wired return network is lacked due to the fact that wired transmission resources cannot be deployed; in such a scenario, the existing micro base station wireless coverage system based on fixed network line, PON, PTN, etc. as the backhaul network cannot be applied.
Disclosure of Invention
In view of this, an embodiment of the present invention provides a wireless network system, so as to solve the problem that a wired network cannot be laid to connect a micro base station in an outdoor application scene, such as a marine area or a mobile vehicle or a mobile ship.
The technical scheme of the embodiment of the invention is as follows:
a wireless network system, comprising: the system comprises a signaling gateway and a safety gateway which are connected with a Long Term Evolution (LTE) system core network, wherein the signaling gateway is connected with at least one first satellite Communication indoor Unit (SC-IDU) through the safety gateway, the first SC-IDU is also connected to the LTE core network through the safety gateway, the first SC-IDU is connected with a first satellite Communication outdoor Unit (SC-ODU), the micro base station is connected with a second SC-IDU, the second SC-IDU is connected with a second SC-ODU, and the safety gateway and the micro base station communicate In a satellite Communication mode through the first SC-IDU, the first SC-ODU, the second SC-IDU and the second SC-ODU;
the signaling gateway is connected with the LTE core network through an S1-MME interface, the security gateway is connected with the signaling gateway through an S1-MME interface, the security gateway is connected with the LTE core network through an S1-U interface, and the first SC-IDU is connected with the security gateway through an Internet IP protocol; wherein,
the signaling gateway is used for converging and forwarding signaling in the communication process of the mobile station MS between the LTE core network and the micro base station;
the safety gateway is used for carrying out security detection on a signaling communicated between the signaling gateway and the micro base station and data communicated between the LTE core network and the micro base station;
the first SC-IDU is used for converting the signaling and the data from the security gateway into analog signals and sending the analog signals obtained by conversion to the first SC-ODU; converting the analog signal from the first SC-ODU into signaling and data, and sending the signaling and the data to a security gateway;
the first SC-ODU converts the analog signal from the first SC-IDU into a radio frequency signal and sends the radio frequency signal to the second SC-ODU in a satellite communication mode; converting the radio frequency signal from the second SC-ODU into an analog signal, and sending the analog signal obtained by conversion to the first SC-IDU;
the second SC-ODU converts the radio frequency signal from the first SC-ODU into an analog signal and sends the analog signal obtained by conversion to the second SC-IDU; converting the analog signal from the second SC-IDU into a radio frequency signal, and sending the radio frequency signal obtained by conversion to the first SC-ODU in a satellite communication mode;
the second SC-IDU converts the analog signal from the second SC-ODU into signaling and data and sends the signaling and data obtained by conversion to the micro base station; receiving signaling and data from the micro base station, converting the received signaling and data into analog signals, and sending the analog signals obtained by conversion to a second SC-ODU;
the micro base station is used for converting the signaling and the data from the second SC-IDU into radio frequency signals and sending the radio frequency signals to the MS; and receiving a radio frequency signal from the MS, converting the received radio frequency signal into signaling and data, and sending the signaling and the data to the second SC-IDU.
In an embodiment of the present invention, a structure of a wireless network system is provided, where the system includes: the system comprises a signaling gateway and a safety gateway which are connected with a core network of an LTE system, wherein the signaling gateway is connected with at least one first SC-IDU through the safety gateway, the first SC-IDU is also connected to the LTE core network through the safety gateway, the first SC-IDU is connected with a first SC-ODU, a micro base station is connected with a second SC-IDU, the second SC-IDU is connected with a second SC-ODU, the safety gateway and the micro base station perform satellite communication through the first SC-IDU, the second SC-IDU and the second SC-ODU, the signaling gateway converges and forwards signaling in the communication process of the MS between the LTE core network and the micro base station, the safety gateway performs safety detection on the signaling communicated with the micro base station and data communicated with the LTE core network and the micro base station, and the micro base station realizes wireless access to the MS; as can be seen, the first SC-IDU, the first SC-ODU, the second SC-IDU, and the second SC-ODU are set to implement satellite communication between the signaling gateway, the LTE core network, and the micro base station in the embodiment of the present invention, and the embodiment of the present invention can be applied to an application scenario where a wired transmission network cannot be laid to set the micro base station in a marine area, a remote area, a mobile vehicle or ship, and the like, and the micro base station can effectively implement access of the MS to the core network through satellite communication.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
Fig. 1 is a block diagram of a wireless network system according to an embodiment of the present invention;
fig. 2 is a block diagram of the micro base station in fig. 1;
FIG. 3 is a block diagram of a first SC-IDU of FIG. 1;
fig. 4 is a block diagram of a first SC-ODU in fig. 1;
fig. 5 is a block diagram of a second SC-ODU in fig. 1;
fig. 6 is a block diagram of a second SC-IDU of fig. 1.
Detailed Description
The embodiments of the present invention will be described in conjunction with the accompanying drawings, and it should be understood that the embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.
The embodiment of the invention provides a wireless network system, which is used for solving the problem that a micro base station cannot be arranged in an outdoor application scene such as a sea area or a mobile vehicle or a ship by laying a wired network in the prior art.
In the technical solution provided by the embodiment of the present invention, a wireless access network for mobile communication includes a plurality of wireless network systems, and fig. 1 shows a block diagram of a structure of a wireless network system provided by the embodiment of the present invention, where the system includes:
the signaling gateway 13 and the security gateway 14 connected to the long term evolution LTE system core network 11, specifically, the signaling gateway 13 and the security gateway 14 are connected to the LTE system core network 11 through the public network 12, so that the problem that the micro base station cannot communicate with the core network 11 under the condition of a failure or failure of communication of the private network due to the fact that the signaling gateway 13 and the security gateway 14 communicate with the core network 11 through the private network in the prior art can be avoided; the signaling gateway 13 is connected with at least one first SC-IDU31 through a security gateway 14, the first SC-IDU31 is further connected to the LTE core network 11 through the security gateway 14, the first SC-IDU31 is connected with a first SC-ODU32, each micro base station 15 is connected with a second SC-IDU41, the second SC-IDU41 is connected with a second SC-ODU42, the security gateway 14 and the micro base station 15 communicate with each other through a first SC-IDU31, a first SC-ODU32, a second SC-IDU41 and a second SC-ODU42 in a satellite communication mode, that is, the first SC-ODU32 and the second SC-ODU42 communicate with each other through a satellite as a relay; specifically, the signaling gateway is connected with the LTE core network through an S1-MME interface, the security gateway is connected with the signaling gateway through an S1-MME interface, the security gateway is connected with the LTE core network through an S1-U interface, and the first SC-IDU31 is connected with the security gateway 14 through an Internet Protocol (IP); wherein,
a signaling gateway 13, configured to aggregate and forward signaling in a communication process of a mobile station MS between the LTE core network 11 and the micro base station 15;
the security gateway 14 is used for performing security detection on signaling of the communication between the signaling gateway 13 and the micro base station 15 and data of the communication between the LTE core network 11 and the micro base station 15;
a first SC-IDU31, configured to convert signaling and data from security gateway 14 into analog signals, and send the analog signals obtained through conversion to a first SC-ODU 32; converting the analog signal from the first SC-ODU32 into signaling and data, and sending the signaling and data to a security gateway;
the first SC-ODU32 converts the analog signal from the first SC-IDU31 into a radio frequency signal, and sends the radio frequency signal to the second SC-ODU42 in a satellite communication mode; converting the radio frequency signal from the second SC-ODU42 into an analog signal, and sending the analog signal obtained by conversion to the first SC-IDU 31;
the second SC-ODU42 converts the radio frequency signal from the first SC-ODU32 into an analog signal, and sends the analog signal obtained by conversion to the second SC-IDU 41; converting the analog signal from the second SC-IDU41 into a radio frequency signal, and sending the converted radio frequency signal to the first SC-ODU32 in a satellite communication manner;
the second SC-IDU41, which converts the analog signal from the second SC-ODU42 into signaling and data, and sends the signaling and data obtained by conversion to the micro base station 15; receiving signaling and data from the micro base station 15, converting the received signaling and data into analog signals, and sending the analog signals obtained by conversion to the second SC-ODU 42;
the micro base station 15 is used for converting the signaling and the data from the second SC-IDU41 into radio frequency signals and sending the radio frequency signals to the MS; receiving a radio frequency signal from the MS, converting the received radio frequency signal into signaling and data, and sending the signaling and data to the second SC-IDU 41; further, the micro base station 15 performs radio resource management, scheduling management, radio access control, and mobility management for MS communication, performs local and remote operation and maintenance functions of the micro base station, and performs monitoring of operating state and reporting of alarm information.
Specifically, as shown in fig. 2, the micro base station 15 includes: a digital signal processing module 151, a digital intermediate frequency processing module 152 and a radio frequency transceiver module 153;
a digital signal processing module 151, configured to convert the signaling and data from the second SC-IDU41 into baseband signals and send the baseband signals to the digital intermediate frequency processing module 152; converting the baseband signal from the digital intermediate frequency processing module 152 into signaling and data and sending to the second SC-IDU 41; and performing radio resource management, scheduling management, radio access control and mobility management for the communication of the MS;
a digital intermediate frequency processing module 152, configured to convert the baseband signal from the digital signal processing module 151 into a digital intermediate frequency signal, and send the intermediate frequency signal to the radio frequency transceiver module 153; converting the digital intermediate frequency signal from the rf transceiver module 153 into a baseband signal, and transmitting the baseband signal to the digital signal processing module 151;
a radio frequency transceiver module 153 which converts the digital intermediate frequency signal from the digital intermediate frequency processing module 152 into a radio frequency signal and transmits the radio frequency signal to the MS; receives a radio frequency signal from the MS, converts the received radio frequency signal into a digital intermediate frequency signal, and sends the digital intermediate frequency signal to the digital intermediate frequency processing module 152.
Specifically, as shown in fig. 3, the first SC-IDU31 includes:
a signaling source coding module 3101, configured to perform source coding on signaling and data from the security gateway 14;
a signaling baseband signal processing module 3102, connected to the signaling source coding module 3101, for scrambling and interleaving the signal from the signaling source coding module 3101;
a transmitting modulation module 3103, connected to the transmitting baseband signal processing module 3102, for modulating the signal from the transmitting baseband signal processing module 3102;
a digital up-conversion module 3104, connected to the signaling modulation module 3103, for performing interpolation filtering and frequency mixing processing on the signal from the signaling modulation module 3103 to obtain a low-intermediate frequency digital signal;
a digital-to-analog conversion module 3105, connected to the digital up-conversion module 3104, for performing digital-to-analog conversion on the low-intermediate frequency digital signal from the digital up-conversion module 3104 to obtain a low-intermediate frequency analog signal;
an analog up-conversion module 3106, connected to the digital-to-analog conversion module 3105, configured to perform analog up-conversion on the low-intermediate frequency analog signal from the digital-to-analog conversion module 3105 to obtain a high-intermediate frequency analog signal, and send the high-intermediate frequency analog signal to the first SC-ODU 32;
an analog down-conversion module 3107, configured to perform analog down-conversion on the high-intermediate-frequency analog signal from the first SC-ODU32 to obtain a low-intermediate-frequency analog signal;
an analog-to-digital conversion module 3108, connected to the analog down-conversion module 3107, for performing analog-to-digital conversion on the low-intermediate frequency analog signal from the analog down-conversion module 3107 to obtain a low-intermediate frequency digital signal;
a digital down-conversion module 3109, connected to the analog-to-digital conversion module 3108, for performing frequency mixing, decimation filtering and shaping filtering on the low-intermediate frequency digital signal from the analog-to-digital conversion module 3108 to obtain a zero-intermediate frequency baseband signal;
a receiving demodulation module 3110, connected to the digital down-conversion module 3109, for demodulating the zero intermediate frequency baseband signal from the digital down-conversion module 3109;
a receiving baseband signal processing module 3111, connected to the receiving demodulation module 3110, for performing descrambling and deinterleaving on the signal from the receiving demodulation module 3110;
a signal receiving source decoding module 3112, connected to the signal receiving baseband signal processing module 3111, and configured to perform source decoding on the signal from the signal receiving baseband signal processing module 3111 to obtain a signaling and data, and send the obtained signaling and data to the security gateway 14.
As shown in fig. 4, the first SC-ODU32 includes:
a transmitting intermediate frequency amplifying module 3201, configured to perform bandpass filtering and low noise amplification on the intermediate frequency analog signal from the first SC-IDU 31;
a transmitting and mixing module 3202, connected to the transmitting intermediate-frequency amplifying module 3201, for performing analog mixing on the analog signal from the transmitting intermediate-frequency amplifying module 3201 to obtain a high-intermediate-frequency radio frequency signal;
a transmitting band-pass filtering module 3203, connected to the transmitting frequency mixing module 3202, for performing band-pass filtering on the radio frequency signal from the transmitting frequency mixing module 3202;
a power amplifying module 3204, connected to the transmitting band-pass filtering module 3203, for performing power amplification on the radio frequency signal from the transmitting band-pass filtering module 3203;
a radio frequency attenuation module 3205, connected to the power amplification module 3204, and configured to perform gain attenuation on the radio frequency signal from the power amplification module 3204 and send the obtained radio frequency signal to the second SC-ODU 42;
a receive bandpass filtering module 3206, configured to perform bandpass filtering on the radio frequency signal from the second SC-ODU 42;
a low noise amplification module 3207, connected to the reception bandpass filtering module 3206, for performing low noise amplification on the radio frequency signal from the reception bandpass filtering module 3206;
a receiving and mixing module 3208, connected to the low noise amplification module 3207, for performing analog mixing on the radio frequency signal from the low noise amplification module 3207 to obtain an analog signal;
a reception filtering module 3209, connected to the reception mixing module 3208, for performing band-pass filtering on the analog signal from the reception mixing module 3208;
the receiving intermediate frequency amplifying module 3210 is connected to the receiving filtering module 3209, and is configured to perform intermediate frequency amplification on the analog signal from the receiving filtering module 3209 to obtain an intermediate frequency analog signal, and send the obtained intermediate frequency analog signal to the first SC-IDU 31.
As shown in fig. 5, the second SC-ODU42 includes:
a signaling bandpass filtering module 4201, configured to perform bandpass filtering on the radio frequency signal from the first SC-ODU 32;
a low noise amplification module 4202, connected to the signaling bandpass filtering module 4201, for performing low noise amplification on the radio frequency signal from the signaling bandpass filtering module 4201;
a signal-transmitting mixing module 4203, connected to the low-noise amplification module 4202, for performing analog mixing on the radio frequency signal from the low-noise amplification module 4202 to obtain an analog signal;
a signal-transmitting filtering module 4204, connected to the signal-transmitting mixing module 4203, for performing band-pass filtering on the analog signal from the signal-transmitting filtering module 4203;
a transmitting intermediate-frequency amplifying module 4205, connected to the transmitting filtering module 4204, for performing intermediate-frequency amplification on the analog signal from the transmitting filtering module 4204 to obtain an intermediate-frequency analog signal, and sending the obtained intermediate-frequency analog signal to the second SC-IDU 41;
a receiving intermediate frequency amplifying module 4206, configured to perform bandpass filtering and low noise amplification on the intermediate frequency analog signal from the second SC-IDU 41;
a receiving and mixing module 4207, connected to the receiving and intermediate-frequency amplifying module 4206, for performing analog mixing on the analog signal from the receiving and intermediate-frequency amplifying module 4206 to obtain a high-intermediate-frequency radio frequency signal;
a receiving band-pass filtering module 4208, connected to the receiving mixing module 4207, for band-pass filtering the rf signal from the receiving mixing module 4207;
a power amplification module 4209, connected to the reception bandpass filtering module 4208, for performing power amplification on the rf signal from the reception bandpass filtering module 4208;
a radio frequency attenuation module 4210, connected to the power amplification module 4209, is configured to perform gain attenuation on the radio frequency signal from the power amplification module 4209 and send the resulting radio frequency signal to the first SC-ODU 32.
As shown in fig. 6, the second SC-IDU41 includes:
an analog down-conversion module 4101, configured to perform analog down-conversion processing on the high-intermediate-frequency analog signal from the second SC-ODU42 to obtain a low-intermediate-frequency analog signal;
an analog-to-digital conversion module 4102, connected to the analog down-conversion module 4101, and configured to perform analog-to-digital conversion on the low-intermediate-frequency analog signal from the analog down-conversion module 4101 to obtain a low-intermediate-frequency digital signal;
a digital down-conversion module 4103 connected to the analog-to-digital conversion module 4102, and configured to perform frequency mixing, decimation filtering, and shaping filtering on the low-intermediate frequency digital signal from the analog-to-digital conversion module 4102 to obtain a zero-intermediate frequency baseband signal;
a transmitting demodulation module 4104 connected to the digital down-conversion module 4103, for demodulating the zero intermediate frequency baseband signal from the digital down-conversion module 4103;
a transmitting baseband signal processing module 4105, connected to the transmitting demodulation module 4104, for performing descrambling and deinterleaving on the signal from the transmitting demodulation module 4104;
a signaling source decoding module 4106, connected to the signaling baseband signal processing module 4105, and configured to perform source decoding on the signal from the signaling baseband signal processing module 4105 to obtain signaling and data, and send the obtained signaling and data to the micro base station 15;
a receiving source coding module 4107, configured to perform source coding on signaling and data from the micro base station 15;
a receiving baseband signal processing module 4108 connected to the receiving source coding module 4107 for scrambling and interleaving the signal from the receiving source coding module 4107;
a reception modulation module 4109 connected to the reception baseband signal processing module 4108, for modulating the signal from the reception baseband signal processing module 4108;
a digital up-conversion module 4110 connected to the receiving modulation module 4109, for performing interpolation filtering and mixing processing on the signal from the receiving modulation module 4109 to obtain a low-intermediate frequency digital signal;
a digital-to-analog conversion module 4111 connected to the digital up-conversion module 4110, and configured to perform digital-to-analog conversion on the low-intermediate frequency digital signal from the digital up-conversion module 4110 to obtain a low-intermediate frequency analog signal;
an analog up-conversion module 4112, connected to the digital-to-analog conversion module 4111, and configured to perform analog up-conversion on the low-intermediate-frequency analog signal from the analog-to-digital conversion module 4111 to obtain a high-intermediate-frequency analog signal, and send the high-intermediate-frequency analog signal to the second SC-ODU 42.
In the system shown in fig. 1, the processing flow of the downlink signal from the LTE core network 11 to the MS includes:
the LTE core network 11 converges the signaling information to the signaling gateway 13, the signaling gateway 13 converges and forwards the signaling information to the security gateway 14, the LTE core network 11 issues the data information to the security gateway 14, and the security gateway 14 performs security detection on the signaling information and the data information and then sends the signaling information and the data information to the first SC-IDU 31;
the first SC-IDU31 performs source coding, signaling baseband signal processing (including scrambling and interleaving), modulation (such as 16QAM modulation), and digital up-conversion processing (including interpolation filtering, frequency mixing, and the like) on signaling and data from the security gateway 14 to form a digital signal of low and intermediate frequency, performs digital-to-analog conversion on the digital signal of low and intermediate frequency, outputs an analog signal of low and intermediate frequency, and finally outputs an analog signal of high and intermediate frequency through analog up-conversion processing, and sends the analog signal to the first SC-ODU 32;
the first SC-ODU32 performs intermediate frequency amplification and analog frequency mixing on the high and intermediate frequency analog signals from the first SC-IDU31 to obtain high and intermediate frequency radio frequency signals, performs band-pass filtering on the high and intermediate frequency radio frequency signals, filters out-of-band interference signals, obtains radio frequency signals with proper gain through power amplification and radio frequency attenuation processing, and sends the radio frequency signals to the second SC-ODU42 in a satellite mode;
the second SC-ODU42 performs bandpass filtering, low-noise amplification and analog mixing processing on the radio frequency signal from the first SC-ODU32 to obtain an analog signal, performs bandpass filtering and intermediate frequency amplification on the analog signal to obtain a high-intermediate frequency analog signal, and sends the amplified high-intermediate frequency analog signal to the second SC-IDU 41;
the second SC-IDU41 performs analog down-conversion processing on the high-intermediate-frequency analog signal from the second SC-ODU42 to obtain a low-intermediate-frequency analog signal, performs analog-to-digital conversion on the low-intermediate-frequency analog signal to obtain a low-intermediate-frequency digital signal, performs frequency mixing, decimation filtering and shaping filtering on the low-intermediate-frequency digital signal to obtain a zero-intermediate-frequency baseband signal, performs demodulation, descrambling, deinterleaving, satellite frame deframing processing and source decoding on the zero-intermediate-frequency baseband signal to obtain decoded signaling and data, and sends the obtained signaling and data to the micro base station 15;
the micro base station 15 performs upper layer protocol processing and baseband signal processing (including coding, modulation, spread spectrum scrambling, and the like of a physical layer) on the data information and the signaling information from the second SC-IDU41 to obtain a digital baseband signal, performs digital down-conversion processing (including mixing, decimation filtering, shaping filtering, and the like) on the baseband signal to form a zero intermediate frequency baseband signal, performs demodulation and reception baseband signal processing (including descrambling, deinterleaving, and the like) on the zero intermediate frequency baseband signal, and finally performs source decoding to obtain a decoded baseband signal, and the baseband signal performs digital intermediate frequency processing, radio frequency up-conversion, and power amplification processing to obtain a radio frequency signal, and transmits the radio frequency signal to the MS through an antenna of the micro base station 15.
The processing flow of the uplink signal from the MS to the LTE core network 11 includes:
the micro base station 15 receives the radio frequency signal from the MS through the antenna, converts the radio frequency signal into a digital baseband signal through radio frequency conversion, converts the digital baseband signal into signaling and data, and sends the signaling and data to the second SC-IDU 41;
the second SC-IDU41 performs source coding, scrambling, interleaving, modulation, interpolation filtering, and frequency mixing on the received signaling and data to obtain a digital signal of low and intermediate frequency, performs digital-to-analog conversion on the digital signal of low and intermediate frequency to obtain an analog signal of low and intermediate frequency, performs analog up-conversion on the analog signal of low and intermediate frequency to obtain an analog signal of high and intermediate frequency, and sends the analog signal of high and intermediate frequency to the second SC-ODU 42;
the second SC-ODU42 performs bandpass filtering, low-noise amplification and analog frequency mixing on the intermediate-frequency analog signal from the second SC-IDU41 to obtain a high-intermediate-frequency radio frequency signal, performs bandpass filtering, power amplification and gain attenuation on the radio frequency signal, and sends the radio frequency signal with appropriate gain to the first SC-ODU 32;
the first SC-ODU32 performs band-pass filtering, low-noise amplification and analog frequency mixing on the radio-frequency signal from the second SC-ODU42 to obtain an analog signal, performs band-pass filtering and intermediate-frequency amplification on the analog signal to obtain an intermediate-frequency analog signal, and sends the obtained intermediate-frequency analog signal to the first SC-IDU 31;
the first SC-IDU31 performs analog down-conversion on the high-intermediate-frequency analog signal from the first SC-ODU32 to obtain a low-intermediate-frequency analog signal, performs analog-to-digital conversion on the low-intermediate-frequency analog signal to obtain a low-intermediate-frequency digital signal, performs frequency mixing, decimation filtering and shaping filtering on the low-intermediate-frequency digital signal to obtain a zero-intermediate-frequency baseband signal, performs demodulation, descrambling, deinterleaving, satellite frame deframing processing and source decoding on the zero-intermediate-frequency baseband signal to obtain signaling and data, and secures the obtained signaling and data to the gateway 14;
after the security gateway 14 performs security detection on the data information and the signaling information, the data information is sent to the LTE core network 11, the signaling information is sent to the signaling gateway 13, and the signaling gateway 13 converges and forwards the signaling information and then sends the signaling information to the LTE core network 11.
Through the system shown in fig. 1, a signaling gateway and a security gateway connected to a core network of an LTE system, where the signaling gateway is connected to at least one first SC-IDU through the security gateway, the first SC-IDU is further connected to the LTE core network through the security gateway, the first SC-IDU is connected to a first SC-ODU, the micro base station is connected to a second SC-IDU, the second SC-IDU is connected to a second SC-ODU, the security gateway and the micro base station are connected through the first SC-IDU and the first SC-ODU, satellite communication is carried out on the second SC-IDU and the second SC-ODU, a signaling gateway converges and forwards signaling in the communication process of the MS between an LTE core network and a micro base station, a security gateway carries out security detection on the signaling communicated between the signaling gateway and the micro base station and data communicated between the LTE core network and the micro base station, and the micro base station realizes wireless access to the MS; as can be seen, the first SC-IDU, the first SC-ODU, the second SC-IDU, and the second SC-ODU are set to implement satellite communication between the signaling gateway, the LTE core network, and the micro base station in the embodiment of the present invention, and the embodiment of the present invention can be applied to an application scenario where a wired transmission network cannot be laid to set the micro base station in a marine area, a remote area, a mobile vehicle or ship, and the like, and the micro base station can effectively implement access of the MS to the core network through satellite communication.
Example two
On the basis of the first embodiment, the wireless network system provided by the embodiment of the present invention further includes: and the network management unit (not shown in the figure) is connected with the signaling gateway 13, the security gateway 14 and the micro base station 15, so that the functions of user interface management, user group management, software management, log management, system maintenance, parameter setting and alarm reporting of the signaling gateway 13, the security gateway 14 and the micro base station 15 are realized.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A wireless network system, comprising: the system comprises a signaling gateway and a safety gateway which are connected with a Long Term Evolution (LTE) system core network, wherein the signaling gateway is connected with at least one first satellite communication indoor unit (SC-IDU) through the safety gateway, the first SC-IDU is also connected to the LTE core network through the safety gateway, the first SC-IDU is connected with a first satellite communication outdoor unit (SC-ODU), a micro base station is connected with a second SC-IDU, the second SC-IDU is connected with a second SC-ODU, and the safety gateway and the micro base station are communicated in a satellite communication mode through the first SC-IDU, the first SC-ODU, the second SC-IDU and the second SC-ODU; wherein,
the signaling gateway is used for converging and forwarding signaling in the communication process of the mobile station MS between the LTE core network and the micro base station;
the safety gateway is used for carrying out security detection on a signaling communicated between the signaling gateway and the micro base station and data communicated between the LTE core network and the micro base station;
the first SC-IDU is used for converting the signaling and the data from the security gateway into analog signals and sending the analog signals obtained by conversion to the first SC-ODU; converting the analog signal from the first SC-ODU into signaling and data, and sending the signaling and the data to a security gateway;
the first SC-ODU converts the analog signal from the first SC-IDU into a radio frequency signal and sends the radio frequency signal to the second SC-ODU in a satellite communication mode; converting the radio frequency signal from the second SC-ODU into an analog signal, and sending the analog signal obtained by conversion to the first SC-IDU;
the second SC-ODU converts the radio frequency signal from the first SC-ODU into an analog signal and sends the analog signal obtained by conversion to the second SC-IDU; converting the analog signal from the second SC-IDU into a radio frequency signal, and sending the radio frequency signal obtained by conversion to the first SC-ODU in a satellite communication mode;
the second SC-IDU converts the analog signal from the second SC-ODU into signaling and data and sends the signaling and data obtained by conversion to the micro base station; receiving signaling and data from the micro base station, converting the received signaling and data into analog signals, and sending the analog signals obtained by conversion to a second SC-ODU;
the micro base station is used for converting the signaling and the data from the second SC-IDU into radio frequency signals and sending the radio frequency signals to the MS; and receiving a radio frequency signal from the MS, converting the received radio frequency signal into signaling and data, and sending the signaling and the data to the second SC-IDU.
2. The system of claim 1, wherein the micro base station comprises: the system comprises a digital signal processing module, a digital intermediate frequency processing module and a radio frequency transceiving module;
the digital signal processing module is used for converting the signaling and the data from the second SC-IDU into baseband signals and sending the baseband signals to the digital intermediate frequency processing module; converting the baseband signal from the digital intermediate frequency processing module into signaling and data and sending the signaling and data to a second SC-IDU; and performing radio resource management, scheduling management, radio access control and mobility management for the communication of the MS;
the digital intermediate frequency processing module is used for converting the baseband signals from the digital signal processing module into digital intermediate frequency signals and sending the intermediate frequency signals to the radio frequency transceiving module; converting the digital intermediate frequency signal from the radio frequency transceiving module into a baseband signal, and sending the baseband signal to the digital signal processing module;
the radio frequency receiving and transmitting module is used for converting the digital intermediate frequency signals from the digital intermediate frequency processing module into radio frequency signals and transmitting the radio frequency signals to the MS; and receiving a radio frequency signal from the MS, converting the received radio frequency signal into a digital intermediate frequency signal, and sending the digital intermediate frequency signal to the digital intermediate frequency processing module.
3. The system of claim 1, wherein the first SC-IDU comprises:
the signaling information source coding module is used for carrying out information source coding on the signaling and the data from the security gateway;
the transmitting baseband signal processing module is used for scrambling and interweaving the signal from the transmitting information source coding module;
the transmitting modulation module is used for modulating the signal from the transmitting baseband signal processing module;
the digital up-conversion module is used for carrying out interpolation filtering and frequency mixing processing on the signals from the transmitting modulation module to obtain low-intermediate frequency digital signals;
the digital-to-analog conversion module is used for performing digital-to-analog conversion on the low-intermediate frequency digital signal from the digital up-conversion module to obtain a low-intermediate frequency analog signal;
the analog up-conversion module is used for performing analog up-conversion processing on the low-intermediate frequency analog signal from the digital-to-analog conversion module to obtain a high-intermediate frequency analog signal, and sending the high-intermediate frequency analog signal to the first SC-ODU;
the analog down-conversion module is used for performing analog down-conversion on the high-intermediate-frequency analog signal from the first SC-ODU to obtain a low-intermediate-frequency analog signal;
the analog-to-digital conversion module is used for performing analog-to-digital conversion on the low-intermediate frequency analog signal from the analog down-conversion module to obtain a low-intermediate frequency digital signal;
the digital down-conversion module is used for carrying out frequency mixing, decimation filtering and shaping filtering on the low-intermediate frequency digital signals from the analog-to-digital conversion module to obtain zero-intermediate frequency baseband signals;
the receiving demodulation module is used for demodulating the zero intermediate frequency baseband signal from the digital down-conversion module;
the receiving baseband signal processing module is used for carrying out descrambling and deinterleaving on the signals from the receiving demodulation module;
and the receiving signal source decoding module is used for carrying out signal source decoding on the signal from the receiving baseband signal processing module to obtain signaling and data and sending the obtained signaling and data to the security gateway.
4. The system of claim 1, wherein the first SC-ODU comprises:
the transmitting intermediate frequency amplification module is used for performing band-pass filtering and low-noise amplification on the intermediate frequency analog signal from the first SC-IDU;
the transmitting and frequency mixing module is used for carrying out analog frequency mixing on the analog signals from the transmitting intermediate-frequency amplification module to obtain high-intermediate-frequency radio-frequency signals;
the transmitting band-pass filtering module is used for performing band-pass filtering on the radio-frequency signals from the transmitting frequency mixing module;
the power amplification module is used for carrying out power amplification on the radio-frequency signal from the transmitting band-pass filtering module;
the radio frequency attenuation module is used for performing gain attenuation on the radio frequency signal from the power amplification module and sending the obtained radio frequency signal to the second SC-ODU;
the receiving band-pass filtering module is used for performing band-pass filtering on the radio-frequency signal from the second SC-ODU;
the low-noise amplification module is used for performing low-noise amplification on the radio-frequency signal from the receiving band-pass filtering module;
the receiving and mixing module is used for carrying out analog mixing on the radio-frequency signal from the low-noise amplification module to obtain an analog signal;
the receiving filtering module is used for carrying out band-pass filtering on the analog signals from the receiving mixing module;
and the receiving intermediate frequency amplifying module is used for performing intermediate frequency amplification on the analog signal from the receiving filtering module to obtain an intermediate frequency analog signal and sending the obtained intermediate frequency analog signal to the first SC-IDU.
5. The system of claim 1, wherein the second SC-ODU comprises:
the transmitting band-pass filtering module is used for performing band-pass filtering on the radio-frequency signal from the first SC-ODU;
the low-noise amplification module is used for carrying out low-noise amplification on the radio-frequency signal from the transmitting band-pass filtering module;
the transmitting and frequency mixing module is used for carrying out analog frequency mixing on the radio-frequency signals from the low-noise amplification module to obtain analog signals;
the transmitting and filtering module is used for carrying out band-pass filtering on the analog signals from the transmitting and mixing module;
the transmitting intermediate-frequency amplification module is used for performing intermediate-frequency amplification on the analog signal from the transmitting filter module to obtain an intermediate-frequency analog signal and sending the obtained intermediate-frequency analog signal to the second SC-IDU;
the receiving intermediate frequency amplifying module is used for performing band-pass filtering and low-noise amplification on the intermediate frequency analog signal from the second SC-IDU;
the receiving and frequency mixing module is used for carrying out analog frequency mixing on the analog signals from the receiving and intermediate frequency amplifying module to obtain high and intermediate frequency radio frequency signals;
the receiving band-pass filtering module is used for performing band-pass filtering on the radio-frequency signal from the receiving frequency mixing module;
the power amplification module is used for carrying out power amplification on the radio-frequency signal from the receiving band-pass filtering module;
and the radio frequency attenuation module is used for performing gain attenuation on the radio frequency signal from the power amplification module and sending the obtained radio frequency signal to the first SC-ODU.
6. The system of claim 1, wherein the second SC-IDU comprises:
the analog down-conversion module is used for performing analog down-conversion processing on the high-intermediate-frequency analog signal from the second SC-ODU to obtain a low-intermediate-frequency analog signal;
the analog-to-digital conversion module is used for performing analog-to-digital conversion on the low-intermediate frequency analog signal from the analog down-conversion module to obtain a low-intermediate frequency digital signal;
the digital down-conversion module is used for carrying out frequency mixing, decimation filtering and shaping filtering on the low-intermediate frequency digital signals from the analog-to-digital conversion module to obtain zero-intermediate frequency baseband signals;
the transmitting demodulation module is used for demodulating the zero intermediate frequency baseband signal from the digital down-conversion module;
the transmitting baseband signal processing module is used for carrying out descrambling and deinterleaving processing on the signals from the transmitting demodulation module;
the signal source decoding module is used for carrying out signal source decoding on the signal from the signal base band signal processing module to obtain signaling and data and sending the obtained signaling and data to the micro base station;
the receiving information source coding module is used for carrying out information source coding on the signaling and the data from the micro base station;
the signal processing module of the signal receiving baseband, is used for scrambling and interweaving from signal receiving source coding module;
the receiving modulation module is used for modulating the signal from the receiving baseband signal processing module;
the digital up-conversion module is used for carrying out interpolation filtering and frequency mixing processing on the signals from the receiving modulation module to obtain low-intermediate frequency digital signals;
the digital-to-analog conversion module is used for performing digital-to-analog conversion on the low-intermediate frequency digital signal from the digital up-conversion module to obtain a low-intermediate frequency analog signal;
and the analog up-conversion module is used for performing analog up-conversion processing on the low-intermediate frequency analog signal from the digital-to-analog conversion module to obtain a high-intermediate frequency analog signal, and sending the high-intermediate frequency analog signal to the second SC-ODU.
7. The system of claim 1, wherein the signaling gateway is connected to the LTE core network via an S1-MME interface, wherein the security gateway is connected to the signaling gateway via an S1-MME interface, wherein the security gateway is connected to the LTE core network via an S1-U interface, and wherein the first SC-IDU is connected to the security gateway via an internet protocol, IP.
8. The system according to claim 1, wherein the system further comprises a network management unit;
the network management unit realizes the functions of user interface management, user group management, software management, log management, system maintenance, parameter setting and alarm reporting for the signaling gateway, the security gateway and the micro base station.
9. The system according to any one of claims 1 to 8, wherein the signaling gateway and the security gateway are connected with the LTE system core network through a public network.
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