TW444448B - CDMA base station system - Google Patents

Abstract

A CDMA base station system, in which the main system structure comprises a central control module, channel module, analog module, modulated data transmission bus, inter-module transceiving bus, sampling bus, common control bus and monitor, wherein said three modules, four buses and monitor are used to not only enable the downlink channel data transmission between the base station and certain mobile terminal, the uplink channel data transmission between certain mobile terminals and the base station and bi-way subscriber data transmission between the base station and base station control center via E1 interface, but also provide the functions of the sending/receiving of analog signals, the modulation/demodulation of base frequency signal and the downlink channel and uplink channel processing of data processing. The monitor can be applied to achieve the setup, test and fault detection. The point-to-point test functions for base station control center and certain mobile terminals as well as that for certain mobile terminals and base station control center can be simulated. Central control module proceeds on-line monitoring of channel modules plugged in the slots and abnormal conditions via the common control bus and inter-module transceiving bus.

Description

4 4444 B A7 B7 V. Description of the Invention (Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economics [Technical Field] The present invention relates to a CDMA base station system, especially to a method using a central control module, a channel module, and an analog module. The CDMA base station system consisting of a group, a data transfer bus, an inter-module communication bus, a sampling bus, a common bus, and a monitor, which minimizes interference between fixed machines and improves communication quality. Previous technology] According to the current wireless communication field, the communication technologies are different, and the most common Q methods are time-multiplexed, frequency-multiplexed, and coded-multiplexed; among them, Industrial access is the most valued, because coded multi-work access has many merits 'such as having a high degree of superiority in spectral efficiency, so that adjacent base stations can also use the same frequency'. Therefore, Gangduo Weijin It is a good choice for the use of increasingly precious spectrum; on the other hand, because it has power control and enemy-expanding characteristics in design, and has the characteristics of anti-monk There is a large link boundary, so coded multiplexing is connected to the capacity of the user, which is better than other different communication technologies. Therefore, under this condition, the number of Gangduowei access to the construction base is also lower than other different ones. The base of communication technology. Therefore, the inventor of this case established this CDMA base station system based on the above considerations. 20 [Objective of the Invention] The purpose of the present invention is to provide a CDMA base station system, which is controlled by a central control module. , Channel modules, analog modules, data transfer buses, inter-module communication buses, sampling buses, common buses, and monitors to achieve the transmission of fixed channel data from the base station to the fixed machine. 10 15 3- (Please read the unintentional matter on the back before filling out this page) V. Take -------- Order --------- Line-Λ VS Invitation--Ｍ 公 / 4 44 4 4 8 ------- V. Description of the invention (>) A7 B7 5 10 15 Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 20 ^ Transfer to the base and the opposite side of the road and the base station's land reduction Data transmission between the control station and the households via Eb, and can provide honest signals Demodulation "丨 One-way channel data and reverse channel data processing for many months are aimed at providing a way to use a monitor to achieve base / bandwidth and frequency, and can simulate the base station to control the lion marriage. Testing of points and molds_Testing of fixed-wire platform gates 4 functions of CDMA base station systems. [Technical content] This article (: 〇) ^ eight base station systems with the above advantages, including two- The central control group 'can capture the control L number sent by the base station control station' and control or set the channel module and analog module through the common control bus' and can receive the abnormal signals of the channel module and analog module In addition to issuing a warning signal, and notifying the base station control station; " The channel module 'is mainly to provide the base station baseband signal forward link transition, reverse link demodulation and power control functions; " a Analog module, the main function is to provide analog / digital converter, digital / analog converter, IF modulation, IF demodulation, automatic gain control, frequency up, frequency down, power amplifier output, frequency synthesizer, low Devices and interfaces Circuit; ° A modulation data transmission bus, which mainly provides a modulator transmission interface, which sends the output signal of the modulator of each channel module to the digital / analog signal converter in the analog module, and then modifies the modulation The output signals of the converters are added up and converted into an analog = sign and sent to the IF in-phase and vertical phase channels for modulation; {Please read the precautions on the back before filling this page) —— — — — —

II ϋ V line _ 4 This paper size applies to China National Standard (CNS) A4 specification (210 X 297 mm) 444448 A7 B7 _PAflfln77n V. Description of the invention-Module-to-module transmission / connection, mainly for central ㈣ modules Communication interface with each channel module; -Sampling Huhe 'is mainly used to compare the signal of the module _ the ship phase analog / digital conversion H and vertical _ ratio / digital age mixed sampling signal, sent to 5 channels The module performs fundamental frequency demodulation and conversion.--The common control program "Miscellaneous" and the central control na group's health industry architecture bus is generated through the control channel, and some channel modules are available through the light stream. Already in the slot, and can be used to set and detect the abnormal status of the channel module, and detect and set actions for the analog module;} A monitor, mainly to provide monitoring, testing and debugging of the base station system Equivalent effects, and can simulate the action of the base station control station, so that the base station and the fixed machine can perform point-to-point communication test, and can also simulate the action of the fixed machine, so that the base station and the base station control station can perform point-to-point communication test. [Brief description of the drawings] 15 Please refer to the following detailed description of a preferred embodiment of the present invention and the accompanying drawings to further understand the technical content of the present invention and its purpose and effect; the drawings related to this embodiment are: One is the wireless user loop system architecture of the CDMA base station system of the present invention; 20 FIG. 2 is the structural diagram of the guide channel transmission mode of the CDMA base station system of the present invention; and FIG. 3 is the synchronous channel transmission mode architecture of the CDMA base station system of the present invention. Figure 4. Figure 4 shows the paging channel transmission mode of the CDMA base station system of the present invention. -5- i The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 Gongchu 1 --- '' 444448 A7 5. Description of the invention (+ Architecture diagram; Figure 5 is a structural diagram of the forward communication channel transmission mode architecture of the CDMA base station system of the present invention;. Figure > ►, is a structural diagram of the transmission channel gas model 5 of the access channel system of the CDMA base station system of the present invention ^ Figure 7 is a diagram of the reverse traffic channel transmission mode architecture of the CDMA base station system of the present invention; Figure 8 is a system architecture diagram of the CDMA base station system of the present invention; Figure 9 is a CDMA base station system of the present invention Function block diagram of the internal control module 10; Figure 10 is a block diagram of the internal function of the channel module of the CDMA base station system of the present invention; Figure 11 is a block diagram of the internal function of the analog module of the CDMA base station system of the present invention; and Figure 10 The second is the diagram of the IMC transmit / receive bus connection architecture of the CDMA base station system of the present invention. 15 Teach ---- {谞 Read the * on the back first! Then fill in this page] Order -------- -Line. Representative symbols printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs] 1 Fixed machine 3 Base station control station 5 Watts 0 yards 6 Synchronous channel data 8 Blocks staggered and repeated 2 Base station 4 are all 0 guidance Channel information 52 Industry standard architecture Busbar 7 round yards 9 Watts 3 2 yards 6 This paper size applies to China National Standard (CNS) A4 specifications (210 X 297 mm) Α7 B7 V. Description of the invention (Ministry of Economic Affairs, Intellectual Property Bureau) Printed by employee consumer cooperatives 10 Paging channel information 11 Round code 12 Boxes interleaved and repeated 13 Gas codes 14 Forward traffic channel 15 Round code (G ~ 7) Material 16 Blocks interleaved and repeated 17 Watts 18 Access channels Information 19 Round code 20 Block interleaving and repeating 21 Reverse channel data 30 Central control module 31 Channel module 32 Analog module 33 Sampling bus 34 Inter-module transmission / reception 35 Modulation data transmission bus Bus 36 Universal control bus 37 monitor 38 base station control station 40 microprocessor 41 CACHE memory 42 DRAM memory 43 ROM memory 44 interface controller 45 status display 46 RS-23 2 interface port 47 high-level data link control 48 packet processor control 49 E1 interface circuit 50 Synchronous clock generator 51 Interface control circuit 60 Microprocessor 61 DRAM memory 62 ROM memory 63 Interface controller 64 Peripheral component interconnection bus 65 Timing control circuit 66 Plow receiver (please first Read the precautions on the back and fill out this page}, \ J. „, V installation -------- Order ------line " This paper size applies to China National Standard (CNS) A4 specification (210 χ 297 mm) 444448

V. Explanation of the invention (&) 67 watt code demodulator 69 buffer 71 buffer 73 virtual disorder digital modulator 75 vertical phase analog / digital converter 77 vertical phase sampling 79 in-phase digital / analog converter 81 in-phase Total 83 in-phase and vertical phase IF modulation 68 deblock interleaving and Vi terbi decoder 70 high-order data link controller 72 round code, repeat and block interleave 74 in-phase analog / digital converter 76 in-phase sampling 78 in-phase and vertical phase IF demodulation 80 vertical phase digital / analog converter 82 vertical phase sum 84 automatic gain control (please read the precautions on the back before filling this page) ί-one pack -------- order- ------- Line · Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Consumer Cooperatives, 85 Open Frequency, 86 Reduced Frequency, 87 88 Low Noise Enlargement [Preferred Embodiment] Please refer to the figure-shown 'is provided by the present invention The cdma base station system's wireless user loop system rack_ mainly includes three parts including fixed machine 1, base station 2 and base station control series; the process of shouting is as follows: 3 • Signal is sent from base station 2 to fixed machine 1 Transmission method: the paper is passed through the paper National Standard of Finance (CNS) A4 size coffee X 297 public love) ---- 444 448 15 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (• f = packet and forward communication service = packet The material is sent to the solid; and the power control bit is added to the forward communication pass ^ and sent to the machine to 'adjust the RF output of the machine to reduce the interference between the fixed machines' to make n Keep the best condition. 5 b._Transmission method from Gulai 1 to base station 2: The data of incoming channel packets and reverse traffic channel packets are sent to base station 2 through the reverse link. C. Signal Method for sending from base station 2 to base station control station 3: The ^ Shan Link sends the reverse channel data of each fixed machine 1 to the central control module after demodulating it through the baseband circuit of base station 2 and then Then it will be sent to the base station for control, and it will be processed in step 10. 1 d. The signal is sent from the base station control station 3 to the base station .: It is the central control group of Longshan base station 2 that connects different users to Longshan Link. , The central control module again = different user data is sent to the channel module, and the channel module is transparent Data is summed through analog modules, and sent to different fixed machines through IF and RF circuits. Refer to Figure 2, which is the architecture diagram of the guide channel transmission mode of the CDma base station system provided by the present invention ^ , It will be 〇 guide channel data / W: and the gas code 0 virtual random number 5 (here the gas code number from 0 to 63 in total of 64 groups) after the spreading frequency reached 1.2 Move Meps rate ' Then, the short code forward and reverse phase shift is adjusted to the in-phase 22 and vertical phase 23 signals. Go to FIG. 3, which is a structure diagram of a synchronous channel transmission mode of a CDMA base station j provided by the present invention. 12kbps synchronization channel k material 6 is sent to the round code 7 (r = 1/2) for encoding, and then the rate is adjusted by block interleaving and repeating method 8 to prevent surge errors, and then use the gas code to make virtual random digital 9 After the audio frequency reaches 1 2288] ^ 3, the short code is positive and negative. 9- This paper size 'ffi China National Standard (CNS) AiJ specifications ⑽χ Norwegian

A7 PAAfln ^ 7n τΐΛ / ρ 44444 8 — ___B7 V. Description of the invention (^) The displacement is adjusted to the in-phase 22 and vertical phase 23 signals. Please refer to FIG. 4, which is a structural diagram of the paging channel transmission mode of the CDMA base station system provided by the present invention. The paging channel 10 is also round-coded 11 (R = 1/2), interleaved and repeated 12 and tile. Division code (0 ~ 7) The virtual random number 5 code 13 is spread, and then the short code forward and reverse shift is adjusted to the same phase 22 and vertical phase 23 signals and transmitted; and the data rate of paging channel 10 is 4.8kbps or 9.6kbps , And after the boxes are staggered and repeated 12 need to go through data agitation. Please refer to FIG. 5, which is a structural diagram of a forward traffic channel transmission mode of the CDMA base station system provided by the present invention. The forward traffic channel 14 10 is also transmitted through a convolutional code 15 (R = l / 2), The blocks are interleaved and repeated 16 and the gas code 17 are spread, and then the short code positive and negative phase shift is adjusted to the in-phase 22 and vertical phase 23 signals and transmitted; and it must have the function of inserting power control bits and its input packet data volume: 1.2kbps, 2.4kbps, 4.8kbps or 9.6kbps. Please refer to FIG. 6 for the CDMA base station provided by the present invention. 15. The system's access channel transmission mode architecture diagram. First, the access channel packet a is sent to the round-robin code 19 (R = l / 3) at 4.8bps. Subsequently, the rate is adjusted in a repeating and interleaved 20 manner to prevent surge errors. All transmitted signals are then modulated into a group of gas codes in a six-bit unit, and the signals interfere with each other in the air interface. Will reach the minimum; then the long code spreading and short code compensation for the forward and reverse phase of the 20-phase modulation into in-phase and vertical phase signals are transmitted. Please refer to FIG. 7, which is a structure diagram of a reverse gfl traffic channel transmission mode architecture of the CDMA base station system provided by the present invention. The operation mode is the same as the forward traffic channel, and the transmission rate of the channel is 12 kbps, 2 4 bps, 4 8 such as 3 or 9.6 kbpS, four types; reverse communication channel 21 except transmission structure with access channel 10-This paper size applies to China National Standard (CNS) A4 specifications (210 x 297 public) (Please read the back Please fill in this page again for attention} Packing --------- -Order! ---- Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs Α7 __Β7_ V. Description of Invention (q) After modulation, the data still needs to be randomized. On the other hand, since the reverse channel 21 does not provide the function of a guide channel, the base station base frequency circuit must use the gas code when demodulating the base frequency signal. The orthogonality is used to demodulate and provide the synchronization information required by the synchronization circuit.

5 Please refer to FIG. 8 to FIG. 12, which are system architecture diagrams of the CDMA base station system provided by the present invention. This system architecture diagram is mainly composed of a central control module 30, a channel module 31, an analog module 32, Modulation data transmission bus 35, inter-module transmit / receive bus 34a and 34b, sampling bus 33, universal control bus 36 and monitor 37 are composed of the following functions and operations of different modules and bus 10 For explanation: 1. Central control module 30: The main function is to provide signal control and interface control of CDMA WLL base station, and the signal control includes two aspects: a. Retrieve the control signal transmitted from base station control station 38 The channel module 31 and the analog module 32 are controlled or set through the common control bus 34. 15 When the channel module 31 and the analog module 32 send abnormal signals, the central control module 30 will issue a warning signal and notify the base station control station 38 D. The interface control part includes three aspects:

a. Between the central control module 30 and the monitor 37: The central control module 30 can be connected to the monitor 37 through RS-232 'and can monitor, debug and monitor the CDMA 20 WLL base station system through the monitor 37. test. b. The central control module 30 and the base station control station 38: The central control module 30 is connected to the base station control station 38 through the E1 interface, and the E1 interface enables the central control module 30 to channel the module 31 The demodulated user data is sent to the base station control station 38; on the other hand, the central control module 30 and the base station-11-this paper size applies to China National Standard (CNS) A4 (210 x 297 mm) (Please read the precautions on the back before filling out this page) • 1 «· 1 ^ 1 ---- Order --------- line -'_ Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs Consumer Cooperatives 444448 A7 Β7 minwrf.f Μ, I μνκ I dl 5 10 15 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 20, Invention Description (〖〇) Control station 38 User data sent via the El interface, transmitted between modules / The receiving buses 3 4 a and 3 4 b are output to the channel module 31 and the analog module 3 2. For the internal function block diagram of the central control module 30, please refer to FIG. 9. The internal function blocks of this module include: 386/486 microprocessor 40 processing capability, CACHE memory 41, and DRAM memory expandable to 16MB. 42. ROM memory 43 which can be expanded to 256KB. b. It has an interface controller 44 to provide an industry standard architecture interface bus 52 ^ c_ A status display 45 that can display the current status of the base station in real time. d. Provide RS232 interface port 46 connected to monitor 37. e. The high-order data link controller 47 and the packet processor 48 provided to the communication interface of the channel module 31. f. Provide the E1 interface circuit 49 connected to the base station control station 38. g. Synchronous clock generator 50 »h. k for generating and synchronizing clocks of 38 stations with base station control. Interface control circuit 51 for common control of bus 36 for each module. 2. Channel module 3i: Refer to Figure 10 for the internal function block diagram of the channel module. Its main function is to provide CDMAWLL base station baseband signal forward link modulation, reverse link demodulation and power. Control, and provide high-level data link control protocol with the communication interface of the central control module 30, which are described as follows: a. The signal modulated by this module includes the guidance channel packet, the synchronization channel packet, the paging channel packet, and the channel. Packets to the traffic channel, etc. The demodulation and demodulation signal of this module has a total access channel packet and reverse communication channel packet f JI Μ ---- 1 -------- (Please read the precautions on the back before filling this page) 12 4 44 4 4 8 A7 111 1 丨 ΤίΛ / Ρ-_ 5. Description of the invention (U) package and so on. (Please read the precautions on the back before filling this page) 'The control part of this module office can notify the fixed machine to adjust the output power by __ Lai Wei intensity or Qing etc. The internal function blocks of this module include: 5 a. Financial measurement micro processing _ place _ force, slightly charged to __ AM memory 61, ROM memory 62 can be expanded to 256KB. b. The "surface controller 63" can provide peripheral component interconnection interface bus. c. Using the timing control circuit 65, it can provide the function of timing and synchronization of the base frequency circuit, and supply the clock required for the base frequency circuit and sampling. 10 d with lifting receiver 66, gas code demodulator 67, deblocking interleaving and

Viterbi decoder 68 and buffer 69 for data demodulation. 'e. The high-order data link controller interface 70 for communication with the central control module 30. f. It has the functions of processing forward channel data storage buffer 71, convolutional coding, repetition, 15 block parent error 72, gas code, and virtual random digital spread spectrum modulation 73. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 3. Analog Module 32: The internal functional block diagram of this analog module 32 is shown in Figure 1. Its main functions are to provide analog / digital converters, digital / analog converters, Frequency modulation 83, intermediate frequency demodulation 78, automatic gain control 84a and 84b, up frequency 85, down frequency 86, power amplification output 87 'frequency synthesizer 89, low noise amplifier 88 and interface 20 circuit 90; its internal The function blocks are described as follows: a. The roles of in-phase analog digital converter 74, vertical phase analog / digital converter 75, in-phase sampling 76 and vertical phase sampling 77 in this module are to demodulate the intermediate frequency to 78 potential The signal is quantized and sent to the channel module 31 through the sampling bus 33 after sampling. -13- This paper size is applicable to the national standard 1f1 (CNS) A4 specification (210 X 297 mm) 444 44 8 A7 B7 Printed and published by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economy ((·) b. In-phase digital / analog Converter 79, vertical phase digital / analog converter 80, in-phase sampling 81, and vertical phase sampling 82 in this module are the digital signals after the channel module 31 is modulated and added to the baseband filter and converted into analog signals. , Sent to the IF for in-phase and vertical phase modulation 83. c. In-phase and vertical cap_83 off-phase and vertical wealth _ modulation Ke: f system via in-phase digital / analog converter 79 and vertical phase digital ratio converter The analog signal of SO must be sent to the in-phase and vertical phase IF modulation and then sent to the RF circuit. L The down-frequency signal received by the RF circuit is sent to the IF demodulation and conversion circuit 78, and then sent to the analog / digital conversion. Device 74, vertical phase analog / digital converter 75, in-phase sampling 76 and vertical phase sampling 77, and send them to the channel module 31 through the sampling bus 33. '' 'd. Automatic increase i control program: it is for output / Lose the record, and adjust the gain of is, so that The receiving and transmitting signals maintain a certain level. E 'Up-frequency 85 and Down-frequency 86 functions: The county frequency and intermediate frequency signals cannot be directly transmitted to the air' IS1. This requires the use of Sunna to achieve the standard of transmission efficiency, otherwise, It is necessary to use a frequency reduction of 86 to achieve the level that the fundamental frequency circuit can demodulate, and it is generally completed by the wave mixing circuit. F. Power amplification input: The main Weisi Tisi platform has sufficient output power to the antenna in order to The signal is transmitted within the range required by the system specifications. G. Low noise amplification: its main function is to amplify the weak signal mirror of the sky noise to supply the signal strength required by the downconverter. H. Frequency synthesizer : 89 The main Wei of this box is to generate the local vibration to provide the clock required for up-frequency 85, down-frequency 86, intermediate frequency modulation 83 and intermediate frequency demodulation 78. _ * 14 »丨 this paper The standard is applicable to China's national standard (CNS> A4 specification (210 X 297)) " ~~ —- 5 10 15 20 I ^ I, install -------- order ----- line (please (Please read the notes on the back before filling this page) ^ 44448 A7 B7 ΡΔ «Αη9 · 7Π 1 V. Description of the invention (5 10 15 经Printed by the Intellectual Property Cooperative of the Ministry of Intellectual Property, 20 i • Interface circuit 90 that provides detection of analog module 32, controlled by common control bus 36. 4. Transmit / receive bus 34a and 34b between modules: its connection The architecture is shown in Figure 12. The main function is to provide a communication interface between the central control module 30 and each channel module 31. It uses a high-level data link control protocol and its description is as follows: Central control module 30 to each channel module 31 Intermittent transmission mode: The signals sent from the base station control station 38 to the base station pass through the central control module 30D] / £ 丨 interface circuit, take out the channel data, and then send it to the data processor and high-order data link controller 47. And sends it to the channel module 31 via the inter-module transmission bus 34b, the first-order data link controller 70, and then sends the received signal of the high-order data link controller 70 to the baseband processor, which is sent via the modulator. The modulation data transmission bus 35 is sent to the analog module 32, and then sent to the fixed machine through the air interface. b_Receiving mode of central control module 30 to each channel module 31: The letter sent by the fixed machine from the air interface__Lai group 32 is solved, the scale is changed to a digital signal, and then sent to the channel module via the sampling bus 33 Group 31, the baseband demodulation circuit of the channel module 31 decodes the baseband channel data, sends it to the high-order data link controller 70 ', and sends it to the central fiber control group by the inter-module receiving bus 34a 30 The high-order data link controller 47, the high-order data link controller 鄕 sends the received signal to the data processor H, and then sends it to the base station control station 38 through the E1 interface circuit. Soil 〇5_ Modulation Data Transmission Stream 35: The main Wei system provides the _device transmission interface ', which sends the output signal of each channel module 31 modulator to the digital / analog converter block in the analog module. Then, add the output signals of these modulators and convert them into analog signals through a digital / analog converter, and send them into _ —I m This paper is a Chinese national standard (CNS) A4 specification ⑵〇χ 297 installed- ------- Order --------- line (please read the precautions on the back before filling this page) 4 44 4 4 8 A7 Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs Consumer Cooperatives TU / P η 5. Description of the invention ((1) and vertical phase channel modulation. 6 · Sampling bus 33: The analog signals in the analog module 32 go through the in-phase analog / digital converter and the vertical phase analog / digital converter. The sampled digital signals are sent to the sampling bus 33. The main function of the bus is to send these digital signals to the channel mode 5 group 31 for demodulation of the fundamental frequency. 7. Common control bus 36: The bus is composed of The industrial standard architecture bus 52 of the central control module 30 is produced through the interface control circuit 51 The common control bus 36 can be used to understand which channel modules 31 are already in the slot, and is used to set and detect abnormal conditions of the channel modules. In addition, the analog module π can also be set and 10 detected. 8. Monitor 37 · The main function of this monitor is to provide base station system monitoring, testing, and debugging, etc., and it can simulate the action of the base station control station so that the base station and fixed machine can perform point-to-point communication test; It can also simulate the action of a fixed machine, so that the base station and the base station control station can perform point-to-point communication tests. 15 [Features and Effects] The CDMA base station system provided by the present invention has more advantages when compared with other conventional technologies. The following advantages: 1. The present invention is composed of a central control module, a channel module, an analog module, a data transfer bus, an inter-module communication bus, a sampling bus, and a 20 common bus. Reverse channel data transmission between the base station and the base station, forward channel data transmission between the base station and the fixed station, and use of the E1 interface between the base station and the base station control station In addition to the functions of mutual data transmission, it can also provide Z-like signal transmission, modulation / demodulation of baseband signals, forward channel data and reverse channel data processing, etc. -16- This paper scale is applicable to China National Standard (CNS) A4 Specifications (210 X 297 mm) ί ^ -------- tr --------- line ·-(Please read the precautions on the back before filling this page) 4 44 4 4 8

V. Description of the invention 2. The present invention can use the vision-free device to achieve the setting, testing and fault detection of the base station and simulate the point-to-point test between the base station control station and the fixed machine and the simulation between the fixed machine and the base station control station. Point-to-point test and other functions. 3. The central control module of the present invention can perform online detection through the common control bus and the inter-module 5 communication bus to ensure whether the channel module is in the slot or an abnormal situation occurs. The above detailed description is a specific description of a feasible embodiment of the present invention, but this embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or change that does not depart from the technical spirit of the present invention should be included in The scope of patent in this 10 case. In summary, this case is not only technically innovative, but also enhances the above-mentioned multiple effects over conventional items. It should have fully met the statutory invention patent requirements for novelty and advancement, and filed an application in accordance with the law. Application for invention patents, to encourage inventions, to the sense of virtue. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs

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Claims (1)

4 44 4 4 8 AS B8 C8 D8 PA8B0270, TWP-18/16 Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 6. Scope of patent application 1 A CD Μ A base station system, including at least: a central control module, In order to centrally manage the overall state of the system, it is mainly composed of a microprocessor, CACHEs memory, DRAM memory that can be expanded to I, Μ memory that can be expanded to 256KB, interface controller, status display, and off-limit interface 5 ports , Shangjie data link control controller, packet processor, E1 interface circuit, synchronous clock generation H and interface test circuit are triggered to make it cancel or cancel the channel module connection, and manage and maintain the normal operation of the system , And the real-time status of the base station is displayed on the display, and a channel for handling abnormal conditions with the base station control station is established; 10-channel modules are mainly controlled by the microprocessor, DRAM memory, ROM memory, and interface Decoder, timing control circuit, rake receiver, gas decoder, modulator, deblock interleaving and Viterbi decoder, buffer, high-order data link controller, virtual Wei digital modulation It is composed of transmitters to provide the modulation of forward channel data sent to the fixed machine, the demodulation and power control of the reverse channel data sent by the fixed machine; 15-Ship contacts, mainly Etb / Digital signal and miscellaneous H, Digital / Analog signal converter, IF modulation, IF demodulation, automatic gain control, frequency up, frequency down, power amplifier output, frequency synthesis, low noise amplifier and interface circuit; a modulation data transmission bus It mainly provides the transmission interface of the modulator. It sends the signal output by the modulator in each channel module to the digital / analog converter in the analog module, and then adds the signals output by each machine. It is converted into an analog signal by a digital / analog converter and sent to the in-phase and vertical-phase channels of the IF for modulation;-The transmission / reception of the modules between the modules is mainly used as the central control module and -18 ^ paper From Gu Jinguan Family Standard (CNS) A4 ^ (21Gx29 ^^ (Please read the precautions on the back first and then re-enter the ears)-Order "4 44 4 4 8 ABCD ΡΑβ80270.τννΡ- 19/16 5 10 Central Ministry of Economic Affairs Standard Bureau Shellfish Consumption The company printed the patent application for each channel of the Fanfan Park to send / touch the data, and the data link control protocol was also controlled by the central control module, and the listener of each channel was the listener; -Sampling bus, which is analog / digital conversion n and vertical i: analog tb / digital conversion n: analog tb / digital conversion n sampled and sent to the channel module for baseband demodulation; A common control bus is generated by the industry standard architecture bus in the central control module through the interface control circuit so that it can understand whether the channel module is in the slot and can be used to set and detect the channel module. Abnormal conditions can also be set and detected for analog modules. A monitor is mainly used for base station system monitoring: testing, debugging, etc., and can simulate the actions of the base station control station, making The point-to-point communication test can be performed between the base station and the fixed machine, and the action of the fixed machine can be simulated, so that the base station and the base station control station can also perform the point-to-point communication test. 2. The CDMA base station system as described in item 1 of the patent scope, wherein the central control module can capture the control signals transmitted by the base station control station, and control or set the channel module through the common control bus and Analog modules. For example, the CDMA base station system described in item 1 of the scope of the patent application, wherein the central control module can collect the abnormal signals of the channel module and the analog module 'in addition to issuing a warning signal and notifying the base station control station. For example, the CD Μ A base station system described in item 1 of Shenyan's patent scope, in which the central control module can be connected to the base station control station through the E1 interface. Eight quilts 1 1 *-7 Λ (Please read the precautions on the back before filling this page) Packing. Ordered by the Central Standards of the Ministry of Economic Affairs and printed by the Employee Consumer Cooperative 4 44 4 4 8 si C8 Λ P8 PA880270.TWP-20 / 16 6. Scope of Patent Application 5. The CDMA base station system described in item 1 of the scope of patent application, wherein the central module can be connected to the monitor via RS-232. 6. The CDMA base station system as described in item 1 of the scope of patent application, wherein the channel module modulates signals such as guided channel packets, synchronous channel 5 packets, paging channel packets, and forward traffic channel packets. 7 * The CDMA base station system described in item 1 of the scope of patent application, wherein the demodulated signal of the channel module includes an incoming channel packet and a reverse traffic channel packet. 8. According to the CDMA base station system described in item 1 of the scope of patent application, the channel module power control part in 10 can notify the fixed machine to adjust the output power by detecting the signal strength or FER of the fixed machine. 9_. The CDMA base station system as described in item 1 of the scope of patent application, wherein the analog / digital signal converter in the analog module demodulates the intermediate frequency and converts the potential into a digital signal, and then oversamples the digital signal. Pass the 15 oversampling bus to the channel module. 10. The CDMA base station system according to item 1 of the scope of patent application, wherein the digital / analog signal converter in the analog module converts the digital signal after the channel module modulation and addition are converted through the baseband filter and converted. It is an analog signal and sent to the IF for in-phase and vertical phase modulation. 10 11. The CDMA base station system described in item 1 of the scope of patent application, wherein the IF modulation in the analog module is mainly modulated by analog signals such as analog / digital converters and digital / analog converters. , And then transmitted by the RF circuit. 12. According to the CDIVIA base station system described in item 1 of the scope of patent application, its "20 _ This paper size applies to Chinese national standards (CNS > Α4 size (common)) (Please read the precautions on the back before filling in this (Page) Order 444448 B8 CS D8 PA880270.TWP-21 / 16 VI. In the scope of patent application, the IF demodulation in the analog module is mainly to demodulate the down-frequency signal received by RF and then pass the sampling bus. Send to the channel module. 13. The CDMA base station system described in item 1 of the scope of patent application, wherein the automatic gain control in the analog module is mainly to adjust the gain of the amplifier for the strength of the input / output 5 input signal, so that Reception and transmission are maintained at a certain level 14. As in the CDMA base station system described in item 1 of the scope of patent application, since the baseband and intermediate frequency signals cannot be directly transmitted to the air, an up-converter device in the analog module is required Reach the standard of RF transmission efficiency, 'Conversely, 10 must have a frequency reduction device to achieve the level of demodulation of the fundamental frequency circuit. 15. The CDMA base station system as described in the first scope of the patent application, which, of this analogy The power amplification output in the module is mainly to provide the base station control station with sufficient output power to the antenna in order to transmit the signal to the range of system specifications. 15 16 · The CDMA base station described in item 1 of the scope of patent application The system is printed by the staff of the Central Standards Bureau of the Ministry of Economic Affairs and printed by a cooperative (please read the precautions on the back before filling this page). The low-noise amplifier in the analog module is mainly used to amplify the weak signal received by the antenna. Supply the signal strength required by the downconverter. 17. The CDMA base station system described in item 1 of the scope of patent application, wherein the frequency synthesizer in the analog module mainly generates the local seismic signal 丨 0 to provide the Frequency, frequency reduction, modulation and demodulation. -21-This paper size adopts China National Standard (CNS) A4 specification (210X297 mm)