CN203181226U - Multi-network integration access indoor signal coverage system - Google Patents
Multi-network integration access indoor signal coverage system Download PDFInfo
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- CN203181226U CN203181226U CN 201320022914 CN201320022914U CN203181226U CN 203181226 U CN203181226 U CN 203181226U CN 201320022914 CN201320022914 CN 201320022914 CN 201320022914 U CN201320022914 U CN 201320022914U CN 203181226 U CN203181226 U CN 203181226U
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Abstract
The utility model discloses a multi-network integration access indoor signal coverage system. The system comprises netting twines and a near-end unit used for connecting with a base station. The near-end unit is connected with at least one expansion unit. The expansion unit is connected with at least one coverage slave computer. The expansion unit and the coverage slave computer are in communication connection through the corresponding netting twine. The coverage slave computer is connected with an antenna. With the adoption of the multi-network integration access indoor signal coverage system, various signals can be simultaneously covered indoors, thereby not only reducing the number of indoor network access equipment, but also decreasing the laying complexity and construction difficulty of transmission lines and solving the problem of difficulty of far-end equipment power supply. In addition, the system of the utility model is very high in stability and reliability and strong in anti-interference capability. The multi-network integration access indoor signal coverage system is widely applied to the communication field.
Description
Technical field
The utility model relates to the communication technology, relates in particular to a kind of many nets and merges the indoor signal covering system that inserts.
Background technology
Technical interpretation:
CPRI: common public radio interface
PoE: active Ethernet
Along with improving constantly of people's quality of life level, people are also more and more higher to the requirement of the communication technology, and are particularly outstanding aspect the indoor signal covering especially.Because what base station signal covered use is that wireless signal covers; and according to the characteristic of wireless signal as can be known; base station signal covers usually can make and is in the building that base station signal covers fringe region; even make some place (as megastore, underground parking etc.) in the signal hot spot region signal blind spot occur; thereby cause people not carry out proper communication in above-mentioned place; therefore in order to solve the above problems, the indoor signal of communication network covers and arises at the historic moment.
Now, the scheme that indoor signal covers mainly is to adopt multiple transmission means to mix the scheme of using, for example adopt cable to add wireless or optical fiber adds wireless scheme, and then multiple signals such as transmission GSM, TD-SCDMA, WCDMA, and adopt category-5 cable and then transmission broadband signal.But for traditional indoor signal covers scheme, when if the user need use the signal of different systems such as GSM, TD-SCDMA, broadband simultaneously, then need to possess corresponding access device simultaneously, and the zone that requires the user place has corresponding transmission line, can cause the kind of access device and quantity too much like this, waste placing space and the cost of investment that increases equipment, but also can cause increasing of transmission line, thus increased the construction difficulty of construction of communication network greatly.
The utility model content
In order to solve the problems of the technologies described above, the purpose of this utility model provides a kind of simple in structure and be easy to realize that many nets of operating merge the indoor signal covering system that inserts.
The technical scheme that the utility model adopts is: a kind of many nets merge the indoor signal covering system that inserts, the near-end machine that this system comprises netting twine and is used for being connected with the base station, described near-end machine is connected with at least one expanding element, described expanding element is connected with at least one and covers slave, and described expanding element carries out communication by netting twine between the slave and is connected with covering, and described covering slave is connected with antenna.
Further, described expanding element comprises supply module and first signal processing module that is connected with the near-end machine, described first signal processing module is connected with the first gigabit Ethernet chip and first Ethernet interface in turn, and described first Ethernet interface also is connected with supply module;
Described covering slave comprises second Ethernet interface, the secondary signal processing module that described second Ethernet interface is connected with the second gigabit Ethernet chip in turn and is connected with antenna, and described second Ethernet interface also is connected with and is subjected to electric module;
Described first signal processing module communicates by the first gigabit Ethernet chip, first Ethernet interface, netting twine, second Ethernet interface and the second gigabit Ethernet chip and then with the secondary signal processing module successively and is connected.
Further, described first signal processing module comprises the 2nd CPRI frame process chip and the first ethernet frame process chip that is connected with the near-end machine, the described first ethernet frame process chip is connected with the first gigabit Ethernet chip, first output of described the 2nd CPRI frame process chip is connected with second comb shape in turn and extracts interpolation filter, first digital up converter and first buffer, and the output of described first buffer is connected with the first input end of the first ethernet frame process chip;
First output of the described first ethernet frame process chip is connected with the 4th buffer, the 3rd digital down converter and the 3rd comb shape in turn and extracts interpolation filter, and the output that described the 3rd comb shape extracts interpolation filter is connected with the first input end of the 2nd CPRI frame process chip;
Second output of described the 2nd CPRI frame process chip is connected with the 5th buffer, and the output of described the 5th buffer is connected with second input of the first ethernet frame process chip;
Second output of the described first ethernet frame process chip is connected with the 8th buffer, and the output of described the 8th buffer is connected with second input of the 2nd CPRI frame process chip;
Described the 2nd CPRI frame process chip also is connected with Ethernet switch and the tenth buffer in turn, and described the tenth buffer is connected with the first ethernet frame process chip.
Further, described secondary signal processing module comprises the 3rd analog down converter, the 4th analog down converter and the second ethernet frame process chip, the described second ethernet frame process chip is connected with the second gigabit Ethernet chip, first output of the described second ethernet frame process chip is connected with second buffer, first finite impulse response filter, second digital up converter, first digital to analog converter and the 3rd simulation upconverter in turn, and the output of described the 3rd simulation upconverter is connected with the input of antenna;
The input of described the 3rd analog down converter is connected with the output of antenna, the output of described the 3rd analog down converter is connected with second analog to digital converter, second digital down converter, second finite impulse response filter and the 3rd buffer in turn, and the output of described the 3rd buffer is connected with the first input end of the second ethernet frame process chip;
Second output of the described second ethernet frame process chip is connected with hex buffer, the 4th finite impulse response filter, the 4th digital up converter, the 3rd digital to analog converter and the 4th simulation upconverter in turn, and the output of described the 4th simulation upconverter is connected with the input of antenna;
The input of described the 4th analog down converter is connected with the output of antenna, the output of described the 4th analog down converter is connected with the 4th analog to digital converter, the 5th digital down converter, the 5th finite impulse response filter and the 7th buffer in turn, and the output of described the 7th buffer is connected with second input of the second ethernet frame process chip;
The described second ethernet frame process chip also is connected with the 11 buffer and 100 m ethernet chip in turn.
Further, described near-end machine comprises first analog down converter, second analog down converter, the 9th buffer and a CPRI frame process chip that is connected with first signal processing module, the output of described first analog down converter is connected with first analog to digital converter, first digital down converter and first comb shape in turn and extracts interpolation filter, and the output that described first comb shape extracts interpolation filter is connected with the first input end of a CPRI frame process chip;
First output of a described CPRI frame process chip is connected with the 4th comb shape in turn and extracts interpolation filter, the 3rd digital up converter, second digital to analog converter and the first simulation upconverter;
The output of described second analog down converter is connected with the 3rd analog to digital converter, the 4th digital down converter and the 3rd finite impulse response filter in turn, and the output of described the 3rd finite impulse response filter is connected with second input of a CPRI frame process chip;
Second output of a described CPRI frame process chip is connected with the 6th finite impulse response filter, the 5th digital up converter, the 4th digital to analog converter and the second simulation upconverter in turn;
A described CPRI frame process chip is connected with the 9th buffer.
Further, this system also comprises local switch, and described local switch is connected with described Ethernet switch.
Further, described netting twine adopts CAT5E UTP cable.
Further, described first Ethernet interface and second Ethernet interface have all adopted the Ethernet interface that contains the network transformer of supporting supply module.
The beneficial effects of the utility model are: system of the present utility model is by netting twine and then transmits signals such as GSM, TD-SCDMA, broadband simultaneously, therefore by using the utility model, just can be implemented in the indoor various signals that cover simultaneously, so not only reduced indoor network access equipment quantity, but also reduced laying complexity and the difficulty of construction of transmission line, and reduce the equipment purchase cost.Also have, system of the present utility model adopts remote power feeding, therefore can solve the problem of remote equipment power supply difficulty.In addition, system configuration of the present utility model is simple to be realized with being easy to, and the transmission link of 2G signal, 3G signal and broadband signal does not respectively interact, and can carry out stable transfer to 2G, 3G continuous uninterrupted mobile communication signal and 100 m ethernet signal, therefore system of the present utility model has high stability and reliability, and antijamming capability is strong.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
Fig. 1 is the structural representation that a kind of many nets of the utility model merge the indoor signal covering system that inserts;
Fig. 2 is the first specific embodiment structural representation that a kind of many nets of the utility model merge the indoor signal covering system that inserts;
Fig. 3 is the second specific embodiment structural representation that a kind of many nets of the utility model merge the indoor signal covering system that inserts.
First Ethernet interface 1; Netting twine 2; Second Ethernet interface 3.
Embodiment
By illustrated in figures 1 and 2, a kind of many nets merge the indoor signal covering system that inserts, the near-end machine that this system comprises netting twine 2 and is used for being connected with the base station, described near-end machine is connected with at least one expanding element, described expanding element is connected with at least one and covers slave, and described expanding element carries out communication by netting twine 2 between the slave and is connected with covering, and described covering slave is connected with antenna.And described expanding element and cover between the slave by netting twine 2 and then carry out transfer of data such as 2G, 3G, broadband.Described near-end machine communicates with the base station by cable and is connected, and described near-end machine communicates with expanding element by optical fiber and is connected.
According to above-mentioned the utility model system, its operation principle is: described near-end machine is to the 2G by the base station coupled simulation, after the 3G signal carries out digital processing, with 2G, 3G signal and receive the WLAN signal and carry out framing and packing according to the CPRI agreement, and be sent on the expanding element by optical fiber, and described expanding element is separated frame to the received signal according to the CPRI agreement, obtain corresponding 2G, 3G and WLAN signal, three's signal carries out framing according to the basic agreement of gigabit Ethernet transmission after by corresponding digital processing, and be sent to the covering slave by netting twine 2, at last, described covering slave is separated frame to the received signal according to the basic agreement of gigabit Ethernet transmission, and then obtain 2G, behind 3G and the 100 m ethernet signal, realize 2G by corresponding processing back, the covering of 3G signal and the function of surfing the Net of 100 m ethernet.
Got by above-mentioned, system of the present utility model is by netting twine 2 and then transmits signals such as GSM, TD-SCDMA, broadband simultaneously, therefore by using the utility model, just can be implemented in the indoor various signals that cover simultaneously, so not only reduced indoor network access equipment quantity, but also reduced laying complexity and the difficulty of construction of transmission line, and reduce the equipment purchase cost.
Be further used as preferred embodiment, described expanding element comprises supply module and first signal processing module that is connected with the near-end machine, described first signal processing module is connected with the first gigabit Ethernet chip and first Ethernet interface 1 in turn, and described first Ethernet interface 1 also is connected with supply module;
Described covering slave comprises second Ethernet interface 3, the secondary signal processing module that described second Ethernet interface 3 is connected with the second gigabit Ethernet chip in turn and is connected with antenna, and described second Ethernet interface 3 also is connected with and is subjected to electric module;
Described first signal processing module communicates by the first gigabit Ethernet chip, first Ethernet interface 1, netting twine 2, second Ethernet interface 3 and the second gigabit Ethernet chip and then with the secondary signal processing module successively and is connected.Can get thus, carry out data and power delivery simultaneously by netting twine 2 between described expanding element and the covering slave.And described netting twine 2 adopts CAT5E UTP cable, system of the present utility model has like this used 4 groups of 8 line full duplexs ground of CAT5E UTP cable to carry out data and power supply when transmitting simultaneously, compared to general transmission system, system of the present utility model has higher efficient and power bearing capacity, and because system of the present utility model adopts the power supply technique of PoE, therefore system of the present utility model can make the user need not to utilize power supplied locally, improve the convenience that the user uses operation greatly, and the power supplied locally requirement of saving the user, saved user's Financial cost.
Get according to above-mentioned, because the utility model adopts the power supply technique of PoE, therefore in expanding element, have supply module, be subjected to electric module and in covering slave, have.And described supply module be by the outside provide-48V imports power supply, and the other end that successfully detects netting twine 2 when described supply module is connected to when being subjected to electric module, described supply module will provide 48V power supply for covering slave.
For the PoE power supply technique in the utility model system, its concrete main process is as follows:
1, detects: at the beginning, described supply module is at the very little voltage of first Ethernet interface, 1 place output, and judge the other end of netting twine 2 according to the little electric current that feeds back to, i.e. second Ethernet interface, 2 places, whether be connected to the featured resistance that is subjected to electric module, thereby judging whether this terminal belongs to is subjected to electric module, up to the other end that supply module detects netting twine 2 be connected with one support the IEEE802.3af/at standard be subjected to electric module till.
2, be subjected to electric module classification: when described supply module detect be subjected to electric module after, describedly be subjected to have on the electric module power to divide quasi-resistance, and different resistance values represents this and is subjected to electric module to need different power, therefore, described supply module can basis be classified by the classified information that fed back by electric module and then to being subjected to electric module to carry out power grade, and assesses the power loss grade that this is subjected to electric module.
3, begin power supply: described supply module begin from low tension to being subjected to electric module for power supply, and supply power voltage increases gradually up to the DC power supply that 48V is provided after finish detection and being subjected to electric module classification.
4, power supply: described supply module provides stable 48V DC power supply for being subjected to electric module, is the covering slave stable 48V DC power supply is provided, thereby satisfy the power grade demand that is subjected to electric module.
5, outage: when disconnected from network by electric module, when namely disconnecting netting twine 2, described supply module (generally within 300ms～400ms) rapidly stops to being subjected to electric module for power supply, and described supply module can the duplicate detection process and the terminal that detects netting twine 2 whether have to connect and be subjected to electric module.
Be further used as preferred embodiment, described supply module has adopted support-48V power supply input, has supported 4 tunnel outputs, every road to support the power supply chip of the highest 70W power output, and the model of this power supply chip is MAX5980.In addition, describedly be subjected to electric module to adopt compatible IEEE802.3af/at standard, transfer power greater than the electrical chip that is subjected to of 40W, and this model that is subjected to electrical chip is MAX5969B.And the 48V DC power supply that transmits and separated by second Ethernet interface 3 from netting twine 2 converts the 12V DC power supply to through after being subjected to the processing of electric module, is used to cover slave the operate as normal power supply is provided.
In addition, it is 88E1111 that the described first gigabit Ethernet chip and the second gigabit Ethernet chip all adopt model, can support the chip of 1000BASE-T, 100BASE-T and three kinds of ethernet standards of 10base-T.
Be further used as preferred embodiment, described first Ethernet interface 1 and second Ethernet interface 3 have all adopted the Ethernet interface that contains the network transformer of supporting supply module.
Be further used as preferred embodiment, described first signal processing module comprises the 2nd CPRI frame process chip that is connected with the near-end machine and the first ethernet frame process chip that is used for according to the basic agreement of gigabit ethernet signal transmission the signal that receives being carried out framing solution frame, the described first ethernet frame process chip is connected with the first gigabit Ethernet chip, first output of described the 2nd CPRI frame process chip is connected with second comb shape in turn and extracts interpolation filter, first digital up converter and first buffer, the output of described first buffer is connected with the first input end of the first ethernet frame process chip;
First output of the described first ethernet frame process chip is connected with the 4th buffer, the 3rd digital down converter and the 3rd comb shape in turn and extracts interpolation filter, and the output that described the 3rd comb shape extracts interpolation filter is connected with the first input end of the 2nd CPRI frame process chip;
Second output of described the 2nd CPRI frame process chip is connected with the 5th buffer, and the output of described the 5th buffer is connected with second input of the first ethernet frame process chip;
Second output of the described first ethernet frame process chip is connected with the 8th buffer, and the output of described the 8th buffer is connected with second input of the 2nd CPRI frame process chip;
Described the 2nd CPRI frame process chip also is connected with Ethernet switch and the tenth buffer in turn, and described the tenth buffer is connected with the first ethernet frame process chip.
Be further used as preferred embodiment, described secondary signal processing module comprises the 3rd analog down converter, the 4th analog down converter and the second ethernet frame process chip that is used for according to the basic agreement of gigabit ethernet signal transmission the signal that receives being carried out framing solution frame, the described second ethernet frame process chip is connected with the second gigabit Ethernet chip, first output of the described second ethernet frame process chip is connected with second buffer in turn, first finite impulse response filter, second digital up converter, first digital to analog converter and the 3rd simulation upconverter, the output of described the 3rd simulation upconverter is connected with the input of antenna;
The input of described the 3rd analog down converter is connected with the output of antenna, the output of described the 3rd analog down converter is connected with second analog to digital converter, second digital down converter, second finite impulse response filter and the 3rd buffer in turn, and the output of described the 3rd buffer is connected with the first input end of the second ethernet frame process chip;
Second output of the described second ethernet frame process chip is connected with hex buffer, the 4th finite impulse response filter, the 4th digital up converter, the 3rd digital to analog converter and the 4th simulation upconverter in turn, and the output of described the 4th simulation upconverter is connected with the input of antenna;
The input of described the 4th analog down converter is connected with the output of antenna, the output of described the 4th analog down converter is connected with the 4th analog to digital converter, the 5th digital down converter, the 5th finite impulse response filter and the 7th buffer in turn, and the output of described the 7th buffer is connected with second input of the second ethernet frame process chip;
The described second ethernet frame process chip also is connected with the 11 buffer and 100 m ethernet chip in turn.
Be further used as preferred embodiment, described near-end machine comprises first analog down converter, second analog down converter, the 9th buffer and a CPRI frame process chip that is connected with first signal processing module, the output of described first analog down converter is connected with first analog to digital converter, first digital down converter and first comb shape in turn and extracts interpolation filter, and the output that described first comb shape extracts interpolation filter is connected with the first input end of a CPRI frame process chip;
First output of a described CPRI frame process chip is connected with the 4th comb shape in turn and extracts interpolation filter, the 3rd digital up converter, second digital to analog converter and the first simulation upconverter;
The output of described second analog down converter is connected with the 3rd analog to digital converter, the 4th digital down converter and the 3rd finite impulse response filter in turn, and the output of described the 3rd finite impulse response filter is connected with second input of a CPRI frame process chip;
Second output of a described CPRI frame process chip is connected with the 6th finite impulse response filter, the 5th digital up converter, the 4th digital to analog converter and the second simulation upconverter in turn;
A described CPRI frame process chip is connected with the 9th buffer.
And shown in concrete by Fig. 3, the CPRI frame process chip in the described near-end machine is connected with the 2nd CPRI frame process chip in the expanding element.And a described CPRI frame process chip and the 2nd CPRI frame process chip are all for carrying out framing solution frame according to the CPRI agreement and then to the signal that receives.
According to above-mentioned the utility model system, describe the utility model system particularly and carry out the process that downlink data transmission is handled:
1, described near-end machine carries out after analog down handles the simulation 2G signal that transmitted by base station coupling and simulation 3G signal, be converted to digital signal by analog to digital converter, and then obtain 2G digital signal and 3G digital signal, in addition, described near-end machine is by the 9th buffer and then will be sent to a CPRI frame process chip by the WLAN signal that the base station is transmitted;
2,2G digital signal and 3G digital signal are carried out respectively successively after Digital Down Convert and filtering extraction handle, obtain base band 2G signal and the base band 3G signal of low rate, and base band 2G signal and base band 3G signal are sent to a CPRI frame process chip;
3, a described CPRI frame process chip is according to the CPRI agreement and then with WLAN signal, base band 2G signal and base band 3G signal framing, and by Optical Fiber Transmission to expanding element;
4, the 2nd CPRI frame process chip in the described expanding element is exported WLAN signal, 2G signal and 3G signal respectively according to the CPRI agreement and then after separating frame to the received signal;
5, the 2G signal to output carries out sending to the first ethernet frame process chip by first buffer after corresponding filtering extraction and Digital Up Convert are handled successively, and the 3G signal of output is by the 5th buffer and then send to the first ethernet frame process chip, in addition, the WLAN signal of output is converted to the 100 m ethernet signal after handling through Ethernet switch, and described 100 m ethernet signal sends to the first ethernet frame process chip by the tenth buffer;
6, the described first ethernet frame process chip according to the basic agreement of gigabit ethernet signal transmission to after receiving 2G signal, 3G signal and 100 m ethernet signal and carrying out framing, successively by the first gigabit Ethernet chip, first Ethernet interface 1, netting twine 2, second Ethernet interface 3 and the second gigabit Ethernet chip and then be transferred to the second ethernet frame process chip that covers in the slave;
7, the described second ethernet frame process chip is according to the agreement of gigabit Ethernet framing, and then after separating frame to the received signal, obtains 2G signal, 3G signal and 100 m ethernet signal;
8, the 2G signal that obtains and 3G signal are carried out corresponding interpolation filtering, Digital Up Convert respectively successively, digital-to-analogue conversion is handled and the simulation upconversion process after, launch by antenna, to realize the covering of 2G, 3G signal, and with the 100 m ethernet signal that obtains successively by the 11 buffer and 100 m ethernet chip and then launch, to realize 100,000,000 function of surfing the Net.
And in the transmitting uplink data processing procedure, a described CPRI frame process chip is for according to the CPRI agreement and then separate frame to the received signal, described the 2nd CPRI frame process chip is for according to the CPRI agreement and then carry out framing to the received signal, the described first ethernet frame process chip is to separate frame to the received signal for the basic agreement of transmitting according to gigabit ethernet signal, and the described second ethernet frame process chip is for carrying out framing to the received signal according to the basic agreement of gigabit ethernet signal transmission.Yet because the process of ul transmissions data is the inverse process of downlink transmission data substantially, therefore the process to the ul transmissions data is not described in detail.
Got by above-mentioned, described near-end machine and expanding element are according to the CPRI agreement, utilize light to transmit, and adopted netting twine 2 to realize the transmission of 1000M bandwidth digital signals between described expanding element and the covering slave, when therefore system of the present utility model can and then realize that 2G signal, 3G signal are registered one's residence covering and broadband access network function by netting twine 2, can also save wiring cost, improve user's reception degree, support remote power feeding.
Be further used as preferred embodiment, this system also comprises local switch, and described local switch is connected with described Ethernet switch.
In addition, the system core of the present utility model also is to adopt netting twine 2 to realize 2G, 3G and the transmission of 100 m ethernet signal.Because 2G, the 3G signal is the continuous uninterrupted mobile communication signal, and traditional ethernet is just to carry out the signal transmission under the upper strata requires, and Frame length is not fix, so directly utilize netting twine 2 transmission 2G, 3G and 100 m ethernet signal, this will inevitably cause 2G, the interruption of 3G signal, therefore require the redesign ethernet frame format according to reality, namely be further used as preferred embodiment, when the basic agreement that the described first ethernet frame process chip and the second ethernet frame process chip are used for transmitting according to gigabit ethernet signal is carried out framing to the signal that receives, the described first ethernet frame process chip and the second ethernet frame process chip are formed ethernet frame according to the basic agreement of gigabit ethernet signal transmission with the signal that receives, and described ethernet frame is specific as follows.
Described ethernet frame, its length are the anchor-frame of 800 bytes, and wherein 780 bytes are used for realizing the transmission of system signal, and 20 bytes are Ethernet protection gap.Be IQ two-way 8bit according to system definition 2G signal, the digital signal of speed 31.25Mbps, the 3G signal is IQ two-way 8bit, the digital signal of speed 15.625Mbps, the 100 m ethernet signal is 5bit, the digital signal of speed 25Mbps.Therefore the 2G signal has accounted for the digital bandwidth of 500M in system transmissions, and the 3G signal has occupied the digital bandwidth of 250M, and the 100 m ethernet signal has occupied the digital bandwidth of 125M, and system still has the 125M bandwidth to can be used for protecting gap and system's control.Because the length of described ethernet frame is fixed as 800 bytes; and the bandwidth ratio shared according to above-mentioned each signal; can be among a frame; 400 bytes are the 2G signal; 200 bytes are the 3G signal; 100 byte 100 m ethernet signals, 80 bytes are that system monitoring signal and 20 bytes are the system protection gap.
Set the ethernet frame that X represents 800 bytes, and X
1, X
2, X
3, X
4Be followed successively by four parts of ethernet frame respectively, 2G_I and 2G_Q are expressed as the IQ two-way 2G signal of reception respectively, 3G_I and 3G_Q are expressed as the IQ two-way 3G signal of reception respectively, DATA_E is expressed as the 100 m ethernet signal of reception, and DATA_C is expressed as the system monitoring signal, described ethernet frame then, its form is:
X?=?[X
1、X
2、X
3、X
4]；
X
1?=[2G_I,2G_Q,3G_I,?2G_I,2G_Q,3G_Q]；
X
2?=[2G_I,2G_Q,3G_I,DATA_E,?2G_I,2G_Q,3G_Q,DATA_E]；
X
3=[2G_I,2G_Q,3G_I,DATA_C,?2G_I,2G_Q,3G_Q,DATA_C]；
X
4?=[0]；
Wherein, the length of X1 is 60 bytes, X
2Length be 400 bytes, X
3Length be 320 bytes, X
4Be expressed as the system protection gap of 20 bytes.
Like this, when utilizing netting twine 2 to transmit 2G, 3G and 100 m ethernet signal simultaneously in system of the present utility model, also can guarantee stability and the reliability of the utility model system, and greatly improve the experience sense that the user uses the utility model system.
More than be that preferable enforcement of the present utility model is specified, but the utility model is created and is not limited to described embodiment, those of ordinary skill in the art make all equivalent variations or replacement also can doing under the prerequisite of the utility model spirit, the distortion that these are equal to or replace all is included in the application's claim institute restricted portion.
Claims (7)
1. net merges the indoor signal covering system that inserts more than one kind, it is characterized in that: the near-end machine that this system comprises netting twine (2) and is used for being connected with the base station, described near-end machine is connected with at least one expanding element, described expanding element is connected with at least one and covers slave, and described expanding element carries out communication by netting twine (2) between the slave and is connected with covering, and described covering slave is connected with antenna;
Described expanding element comprises supply module and first signal processing module that is connected with the near-end machine, described first signal processing module is connected with the first gigabit Ethernet chip and first Ethernet interface (1) in turn, and described first Ethernet interface (1) also is connected with supply module;
Described covering slave comprises second Ethernet interface (3), the secondary signal processing module that described second Ethernet interface (3) is connected with the second gigabit Ethernet chip in turn and is connected with antenna, described second Ethernet interface (3) also are connected with and are subjected to electric module;
Described first signal processing module communicates by the first gigabit Ethernet chip, first Ethernet interface (1), netting twine (2), second Ethernet interface (3) and the second gigabit Ethernet chip and then with the secondary signal processing module successively and is connected.
2. merge the indoor signal covering system that inserts according to the described a kind of many nets of claim 1, it is characterized in that: described first signal processing module comprises the 2nd CPRI frame process chip and the first ethernet frame process chip that is connected with the near-end machine, the described first ethernet frame process chip is connected with the first gigabit Ethernet chip, first output of described the 2nd CPRI frame process chip is connected with second comb shape in turn and extracts interpolation filter, first digital up converter and first buffer, the output of described first buffer is connected with the first input end of the first ethernet frame process chip;
First output of the described first ethernet frame process chip is connected with the 4th buffer, the 3rd digital down converter and the 3rd comb shape in turn and extracts interpolation filter, and the output that described the 3rd comb shape extracts interpolation filter is connected with the first input end of the 2nd CPRI frame process chip;
Second output of described the 2nd CPRI frame process chip is connected with the 5th buffer, and the output of described the 5th buffer is connected with second input of the first ethernet frame process chip;
Second output of the described first ethernet frame process chip is connected with the 8th buffer, and the output of described the 8th buffer is connected with second input of the 2nd CPRI frame process chip;
Described the 2nd CPRI frame process chip also is connected with Ethernet switch and the tenth buffer in turn, and described the tenth buffer is connected with the first ethernet frame process chip.
3. merge the indoor signal covering system that inserts according to the described a kind of many nets of claim 1, it is characterized in that: described secondary signal processing module comprises the 3rd analog down converter, the 4th analog down converter and the second ethernet frame process chip, the described second ethernet frame process chip is connected with the second gigabit Ethernet chip, first output of the described second ethernet frame process chip is connected with second buffer in turn, first finite impulse response filter, second digital up converter, first digital to analog converter and the 3rd simulation upconverter, the output of described the 3rd simulation upconverter is connected with the input of antenna;
The input of described the 3rd analog down converter is connected with the output of antenna, the output of described the 3rd analog down converter is connected with second analog to digital converter, second digital down converter, second finite impulse response filter and the 3rd buffer in turn, and the output of described the 3rd buffer is connected with the first input end of the second ethernet frame process chip;
Second output of the described second ethernet frame process chip is connected with hex buffer, the 4th finite impulse response filter, the 4th digital up converter, the 3rd digital to analog converter and the 4th simulation upconverter in turn, and the output of described the 4th simulation upconverter is connected with the input of antenna;
The input of described the 4th analog down converter is connected with the output of antenna, the output of described the 4th analog down converter is connected with the 4th analog to digital converter, the 5th digital down converter, the 5th finite impulse response filter and the 7th buffer in turn, and the output of described the 7th buffer is connected with second input of the second ethernet frame process chip;
The described second ethernet frame process chip also is connected with the 11 buffer and 100 m ethernet chip in turn.
4. merge the indoor signal covering system that inserts according to the described a kind of many nets of claim 1, it is characterized in that: described near-end machine comprises first analog down converter, second analog down converter, the 9th buffer and a CPRI frame process chip that is connected with first signal processing module, the output of described first analog down converter is connected with first analog to digital converter, first digital down converter and first comb shape in turn and extracts interpolation filter, and the output that described first comb shape extracts interpolation filter is connected with the first input end of a CPRI frame process chip;
First output of a described CPRI frame process chip is connected with the 4th comb shape in turn and extracts interpolation filter, the 3rd digital up converter, second digital to analog converter and the first simulation upconverter;
The output of described second analog down converter is connected with the 3rd analog to digital converter, the 4th digital down converter and the 3rd finite impulse response filter in turn, and the output of described the 3rd finite impulse response filter is connected with second input of a CPRI frame process chip;
Second output of a described CPRI frame process chip is connected with the 6th finite impulse response filter, the 5th digital up converter, the 4th digital to analog converter and the second simulation upconverter in turn;
A described CPRI frame process chip is connected with the 9th buffer.
5. merge the indoor signal covering system that inserts according to the described a kind of many nets of claim 2, it is characterized in that: this system also comprises local switch, and described local switch is connected with described Ethernet switch.
6. merge the indoor signal covering system that inserts according to each described a kind of many nets of claim 1 to 5, it is characterized in that: described netting twine (2) adopts CAT5E UTP cable.
7. merge the indoor signal covering system that inserts according to the described a kind of many nets of claim 1, it is characterized in that: described first Ethernet interface (1) and second Ethernet interface (3) have all adopted the Ethernet interface that contains the network transformer of supporting supply module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320022914 CN203181226U (en) | 2013-01-16 | 2013-01-16 | Multi-network integration access indoor signal coverage system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320022914 CN203181226U (en) | 2013-01-16 | 2013-01-16 | Multi-network integration access indoor signal coverage system |
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| Publication Number | Publication Date |
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| CN203181226U true CN203181226U (en) | 2013-09-04 |
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| CN 201320022914 Expired - Lifetime CN203181226U (en) | 2013-01-16 | 2013-01-16 | Multi-network integration access indoor signal coverage system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104936197A (en) * | 2014-03-20 | 2015-09-23 | 常州隽通电子技术有限公司 | Mobile communication micropower digital multipoint indoor coverage system |
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- 2013-01-16 CN CN 201320022914 patent/CN203181226U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104936197A (en) * | 2014-03-20 | 2015-09-23 | 常州隽通电子技术有限公司 | Mobile communication micropower digital multipoint indoor coverage system |
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