CN101697640A - Software radio-based wireless communication customer premises equipment - Google Patents
Software radio-based wireless communication customer premises equipment Download PDFInfo
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Abstract
The invention discloses software radio-based wireless communication customer premises equipment, which at least comprises a general purpose hardware unit, a general purpose computer and a general purpose hardware interface. The general purpose hardware unit realizes the radio frequency transmission and reception, analogue-to-digital conversion and the digital-to-analogue conversion of a physical layer unit of the customer premises equipment. The general purpose computer implements the digital baseband signal transmission and reception processing, layer two data processing and layer three data control of the physical layer unit of the customer premises equipment and controls and allocates the general purpose hardware unit. The general purpose hardware interface is connected with the computer and the general purpose hardware unit, realizes the interactive transmission of the digital baseband signal and other control signals between the computer and the general purpose hardware unit. The invention provides general purpose wireless communication customer premises equipment based on the basic ideal of software radio. The equipment can select available wireless communication service flexibly according to requirements of users and a local environment and implements corresponding wireless communication function.
Description
Technical field
The invention belongs to wireless communication technology field, particularly a kind of wireless communication customer premises equipment based on software radio.
Background technology
Wireless communication customer premises equipment can be divided into following a few class according to the difference of communication system classification and ustomer premises access equipment purposes:
1) cellular mobile communication (Cellular System) ustomer premises access equipment, especially realize the ustomer premises access equipment of one or more agreements in the following mobile communication protocol, mobile communication protocol comprises GSM/GPRS/EDGE, IS-95, WCDMA/HSDPA/HSUPA, CDMA2000/CDMA2000EV-DO, TD-SCDMA, 3GPP LTE etc.:
A) ustomer premises access equipment of while support voice and data service: the mobile phone of supporting at least a cellular mobile communication agreement
B) only support data service, with the ustomer premises access equipment of realizing that personal computer is surfed the Net whenever and wherever possible: the data card of supporting at least a cellular mobile communication agreement
C) ustomer premises access equipment that provides premises voice and data service to insert: the Home eNodeB (femto) of supporting at least a cellular mobile communication agreement
2) wireless MAN (WMAN) ustomer premises access equipment, especially based on the ustomer premises access equipment of WiMAX:
A) ustomer premises access equipment of while support voice and data service: the mobile phone of supporting WiMAX speech and function of surfing the Net
B) only support data service, with the ustomer premises access equipment of realizing that personal computer is surfed the Net whenever and wherever possible: the WiMAX card of surfing Internet, support the computer of WiMAX function of surfing the Net
C) ustomer premises access equipment that provides premises voice and data service to insert: the Home eNodeB of supporting WiMAX
3) wireless lan (wlan) ustomer premises access equipment, especially based on the ustomer premises access equipment of WiFi:
A) ustomer premises access equipment of support WiFi data service: WiFi card of surfing Internet, the mobile phone of support WiFi function of surfing the Net, the computer of support WiFi function of surfing the Net
B) ustomer premises access equipment that provides the WiFi data service to insert: the access point of WiFi (AP)
4) Wireless Personal Network (WPAN) ustomer premises access equipment, especially based on the ustomer premises access equipment of one or more agreements in the following WPAN communication protocol, communication protocol comprises bluetooth (Bluetooth), ultra broadband (UWB, and IEEE 802.15):
5) satellite communication ustomer premises access equipment
6) broadcast system user receiving equipment, especially the ustomer premises access equipment of one or more agreements of the following broadcast system of support comprises the ANTENN AUDIO broadcast system, the wireless digital TV-set broadcast system (DVB-T, DMB-TH), (DVB-H of mobile TV system, CMMB, STIMI).Ustomer premises access equipment comprises: ANTENN AUDIO broadcasting receiver, wireless digital TV-set broadcast receiver, mobile TV receiver
7) military wireless communication customer premises equipment, underwater sound wireless communication customer premises equipment
Above-mentioned wireless communication system user end equipment is generally realized by the hardware module of special use, is example with the cellular mobile communication ustomer premises access equipment, as shown in Figure 1, comprise: the physical layer receiving element, the physical layer transmitting element, second layer data processing unit, the 3rd layer of control unit.The physical layer receiving element comprises Receiver Module, is used for received RF signal, and is converted to analog baseband signal; The analog digital modular converter is a digital signal with analog signal conversion; The digital baseband signal processing module, the mediation of separating that is used for the physical layer data signal is deciphered.The physical layer transmitting element comprises the digital baseband signal processing module, is used for coding and modulation for the physical layer data signal; The digital-to-analogue conversion module is converted to analog signal with digital signal; The radio frequency sending module is used for the baseband signal up-conversion, and sends radiofrequency signal.Second layer data processing unit be used for packet packing, unpack data re-transmission, data ciphering and deciphering.The 3rd layer of control unit is used to control the second layer and the required parameter of physical layer entity, wireless resource allocation and management, the measurement of Radio Link and report.The realization of the ustomer premises access equipment of other wireless communication system or its subclass identical with the cellular mobile communication ustomer premises access equipment.
Each module of existing wireless communications ustomer premises access equipment realizes that by special chip and special-purpose hardware circuit its weak point is mostly:
1) function singleness: special chip only has single relatively function in order to force down cost, can't compatible other system.Such as, the base band signal processing chip of GSM can't be finished the base band signal process function of WCDMA.
2) upgrading difficulty: hardware product is difficult to upgrading, and along with the upgrading of communication system and communication protocol, the hardware of ustomer premises access equipment need be changed accordingly, and old ustomer premises access equipment can't continue to use in new system.
3) development cost height: the exploitation of development process complexity, the especially chip of special chip and hardware circuit needs processes such as flow, the manufacturing, and cost is difficult to reduce.
The hardware problem of implementation of above-mentioned wireless communication system user end equipment is present in other wireless communication system too.In recent years, software and radio technique appears as to address the above problem thinking is provided.Software radio is a kind of wireless communication designs that realizes the physical layer connection with software.The major advantage of software radio is its flexibility.In software radio, can dynamically adjust such as channel width, modulation and coding etc., to adapt to the variation of different standards and environment, network service load and user's request.Although software radio has above-mentioned advantage, up to now, also do not have to occur for the general preferably software radio solution of wireless communication customer premises equipment.
CN101014103 has provided for a kind of implementation based on software radio, proposes a kind of digital multimedia receiver of being made up of specialized hardware Receiver Module, analog digital modular converter, all-purpose computer hardware interface (USB2.0 interface) and all-purpose computer.But CN101014103 also reckons without the demand of different wireless communication ustomer premises access equipment, and the emission function of wireless communication customer premises equipment can't be provided, and does not have to consider to realize under unified structure dissimilar wireless communication customer premises equipments.With simple WCDMA data card is example, this equipment need have the function of transmitting and receiving simultaneously, and the second layer of WCDMA and the 3rd layer of processing capacity, when the user roams to the region of not supporting WCDMA, equipment needs the wireless communication transmissions agreement that capability switch to GSM/GPRS/EGDE or other this region supported, these all are CN101014103 institute open questions.
Summary of the invention
The object of the present invention is to provide a kind of wireless communication customer premises equipment based on software radio, basic thought based on software radio, a kind of general wireless communication customer premises equipment is provided, can select available radio communication service neatly according to user's request and residing environment, the function of configure user end equipment.
This purpose is achieved through the following technical solutions: a kind of wireless communication customer premises equipment based on software radio comprises general purpose hardware unit, all-purpose computer and common hardware interface.General purpose hardware unit realizes the radio-frequency transmissions receiver module of the physical layer element of ustomer premises access equipment, analog digital modular converter, and digital-to-analogue conversion module; All-purpose computer realizes that the digital baseband signal of wireless communication customer premises equipment physical layer element receives and send processing, and second layer data processing and the 3rd layer of controlled function, also realize control and configuration simultaneously, make general purpose hardware unit work in the wireless communication system of appointment described general purpose hardware unit; Be connected by the common hardware interface between computer and the general purpose hardware unit, realize being connected between all-purpose computer and the general purpose hardware unit, make digital baseband signal and other control signal between all-purpose computer and general purpose hardware unit, transmit mutually.
Further, all-purpose computer is selected wireless communication protocol according to user instruction, the user can be according to current demand, selection is configured to ustomer premises access equipment the ustomer premises access equipment of certain cell mobile communication systems, or the ustomer premises access equipment of certain WPAN communication system, or the ustomer premises access equipment of certain WLAN communication system, or the ustomer premises access equipment of certain WMAN communication system, or the ustomer premises access equipment of certain satellite communication, or the user receiving equipment of certain broadcast system, or the ustomer premises access equipment of certain military communication, or the ustomer premises access equipment of certain underwater sound communication.According to the ability of ustomer premises access equipment, can select the time division multiplexing hardware device, the perhaps method of frequency division multiplexing is configured to support simultaneously ustomer premises access equipment more than a kind of wireless communication system with ustomer premises access equipment.Its advantage is that the user can be on same ustomer premises access equipment, the communication system of selecting ustomer premises access equipment to support flexibly by the method for computer software configuration, save the hardware cost expense, also transform for ustomer premises access equipment according to the upgrading transition of user's needs and communication system in time flexibly, quicken the updating speed of ustomer premises access equipment.
Further, when ustomer premises access equipment is configured to certain cell mobile communication systems ustomer premises access equipment, or certain WLAN Communications System User end equipment, or during certain WMAN Communications System User end equipment, all-purpose computer is selected the ustomer premises access equipment classification according to user instruction, the user can be configured to the ustomer premises access equipment of functional equivalent in the support voice and the transfer of data of mobile phone with ustomer premises access equipment according to current demand, perhaps functional equivalent is in the ustomer premises access equipment of only supporting transfer of data of data card, perhaps functional equivalent is in the ustomer premises access equipment that provides data to insert of Home eNodeB (femto), and perhaps functional equivalent is in the ustomer premises access equipment that provides data to insert of wireless local network connecting point (AP).Its advantage is that the user can be on same ustomer premises access equipment, according to environment and application demand, selects the classification of ustomer premises access equipment flexibly by the method for software arrangements, saves the hardware cost expense, and required hardware quantity.
Further, the user can select the communication system base class, the base class configure generic hardware cell that all-purpose computer is selected according to the user carries out wireless signal automatically and surveys, and with the relevant parameter of the wireless communications environment that detects (such as the available communication systems classification, signal quality) feeds back to all-purpose computer by the common hardware interface, all-purpose computer helps the user to select the best wireless communication system of service quality according to the signal quality of the various wireless communication systems that detected, perhaps the service rate according to the various wireless communication systems that detected help the user to select most economical wireless communication system, perhaps select wireless communication system, and ustomer premises access equipment is configured to the ustomer premises access equipment of this wireless communication system according to the attribute that other user had a preference for.All-purpose computer passes to general purpose hardware unit for the parameter configuration order of general purpose hardware unit by the common hardware interface.Its advantage is that the user is not having under the situation of basic understanding for various wireless communication system basic principles, attribute, still can automatically select the most satisfied radio communication service.
Further, all-purpose computer is according to the function of selected wireless communication protocol and ustomer premises access equipment classification configure generic hardware cell, comprise and select radio-frequency transmissions received signal center frequency point, radio-frequency transmissions receives duplex mode, baseband transmission receiving digital signals bandwidth etc.All-purpose computer passes to general purpose hardware unit for the configuration signal of general purpose hardware unit by the common hardware interface.Its advantage is that general purpose hardware unit can automatically be configured to adapt to the hardware cell of the air interface attribute of certain wireless communication system under the unwitting situation of user.
Further, can comprise one or more sets radio-frequency modules in the general purpose hardware unit, when a cover radio-frequency module is only arranged, realize that if desired radio frequency sends receiving function (need realize for the emission of upward signal and for the reception of downstream signal such as the radio-frequency module of the ustomer premises access equipment of cell mobile communication systems), radio-frequency module can be configured to work in half-duplex (Half Duplex) pattern, promptly receive and do not send and carry out simultaneously, its advantage is multiplexing for radio-frequency module, has saved hardware cost under the prerequisite of not losing QoS of customer; When two cover radio-frequency modules existed, ustomer premises access equipment can be configured to work in the pattern of full duplex (Full Duplex), reached to receive and send to carry out simultaneously; When existing more than a cover radio-frequency module, ustomer premises access equipment is configured to one or more wireless communication systems of a plurality of frequencies and works simultaneously.
Further, the configuration of parameter can be launched, receive to all-purpose computer for general purpose hardware unit.Along with the carrying out of communication, the emission receiving center frequency of ustomer premises access equipment, emission receives regularly synchronously, and the emission received power all may deviation occur because of factors such as moving of user.All-purpose computer can be revised for frequency shift (FS), time migration, power excursion by the configure generic hardware cell, thereby improve the radio communication quality of logical ustomer premises access equipment, save unnecessary energy waste, prolong the ustomer premises access equipment stand-by time, for the user provides better service.All-purpose computer passes to general purpose hardware unit for the parameter configuration order of general purpose hardware unit by the common hardware interface.
Further, general purpose hardware unit can comprise subscriber identify module card (SIM card, the UIM card) card reader device, perhaps all-purpose computer can have authentification of user, mandate and settlement function (authentication, authorization and accounting), thereby ustomer premises access equipment can carry out operations such as authentication, charging when inserting certain wireless communication system.
Further, under the configuration of all-purpose computer, two or more ustomer premises access equipments can be realized interconnecting between the ustomer premises access equipment, realize point-to-point communication (Peer to Peer), save the wireless communication system resource, improve user communication quality, reduce the cost that the user uses radio communication.
Further, all-purpose computer provides application programming interface (API), and the user can develop corresponding software according to demand, realizes novel wireless communication customer premises equipment, realizes that special applications is to satisfy particular demands.
Further, the common hardware interface unit can comprise a plurality of parallel common hardware interfaces, thereby for enough mutual bandwidth of signal are provided between all-purpose computer and the general purpose hardware unit.
Further, when the limited bandwidth of common hardware interface unit, perhaps during the general-purpose computer processes limited ability, ustomer premises access equipment can start or apply for to start the battery saving mode of wireless communication system, especially, in the LTE communication system, start discontinuous reception modes (DRX), in the WiMAX communication system, start battery saving mode (Power Saving), thereby reduce the average throughput of the digital signal of transmitting on the common hardware interface unit, perhaps reduce demand for the all-purpose computer digital signal processing capability.
Description of drawings
The hardware module of the existing cellular mobile communication ustomer premises access equipment of Fig. 1 realizes
Fig. 2 is based on universal wireless communication ustomer premises access equipment of the present invention
Fig. 3 ustomer premises access equipment is configured to the 3GPPLTE ustomer premises access equipment
Embodiment
Fig. 2 provides one based on wireless communication customer premises equipment example of the present invention.As shown in the figure, all-purpose computer is realized the digital baseband signal receiving processing module of the physical layer element of ustomer premises access equipment, the digital baseband signal of physical layer element sends processing module, second layer data processing unit, the 3rd layer of control unit, the man-machine interface unit, ustomer premises access equipment control unit, and application programming interface (API).Wherein the digital baseband signal receiving processing module is separated to be in harmonious proportion to receiving digital signals and is deciphered; Digital baseband signal transmission processing module is encoded to the physical layer data signal and is modulated; Second layer data processing unit, be used for packet packing, unpack data re-transmission, data ciphering and deciphering etc.; The 3rd layer of control unit is used to control the second layer and the required parameter of physical layer entity, wireless resource allocation and management, the measurement of Radio Link and report etc.; Control and the information interaction of user for ustomer premises access equipment realized in the man-machine interface unit; The ustomer premises access equipment control unit is realized configuration and the management of all-purpose computer for ustomer premises access equipment, for the parameter configuration of general purpose hardware unit, comprise the control of center frequency point, bandwidth, emission power amplifier and received power amplifier for radio-frequency module; The application programming interface unit provides USI for the user, and the user can develop corresponding software according to demand and use.
General purpose hardware unit realizes the radio-frequency transmissions receiver module of the physical layer element of ustomer premises access equipment among Fig. 2, analog digital modular converter, and digital-to-analogue conversion module, and wherein Receiver Module is used for received RF signal, and it is converted to analog baseband signal; It is digital signal that the analog digital modular converter is used for analog signal conversion; The digital-to-analogue conversion module is used for digital signal is converted to analog signal; The radio frequency sending module is used for the baseband signal up-conversion, and sends radiofrequency signal.The center frequency point of radio-frequency module, generation power, duplex mode, the bandwidth of analog digital modular converter, and the bandwidth of digital-to-analogue conversion module all can dispose.For the configuration of general purpose hardware unit, realize that by the ustomer premises access equipment control unit of all-purpose computer configuration signal is transmitted by the common hardware interface.
Be connected by the common hardware interface between computer and the general purpose hardware unit among Fig. 2, realize that digital baseband signal transmits mutually between all-purpose computer and general purpose hardware unit.The common hardware interface can be USB (USB) interface, peripheral hardware original paper interconnected (PCI) interface, PCMCIA card international federation (PCMCIA) interface, IEEE1394 interface etc.
Provide the schematic diagram that wireless communication customer premises equipment is configured to 3GPP LTE ustomer premises access equipment among Fig. 3.General purpose hardware unit realizes the radio-frequency transmissions receiver module of the physical layer element of 3GPPLTE ustomer premises access equipment, analog digital modular converter, and digital-to-analogue conversion module.All-purpose computer realizes that the digital baseband signal of 3GPP LTE ustomer premises access equipment sends reception and handles, second layer data processing, the 3rd layer (rrc layer) control.Digital baseband signal receives and comprises channel estimating and OFDM rectification, and antenna port is separated mapping, and the OFDM resource is separated mapping, the MIMO demodulation, and the constellation point rectification, descrambling, deinterleaving, HARQ handles, channel decoding, CRC check; Digital baseband signal sends and comprises that CRC inserts, chnnel coding, and HARQ handles, interweaves, scrambler, the constellation point modulation, MIMO mapping and precoding, the mapping of OFDM resource, antenna terminal mapping, pilot tone is inserted, the OFDM modulation.Second layer data processing comprises the media access control sublayer data processing, PDCP sublayer data processing, RLC sublayer data processing.Be connected by the USB2.0 interface between general purpose hardware unit and all-purpose computer, realize data passes.
Claims (10)
1. the wireless communication customer premises equipment based on software radio is characterized in that, comprising:
General purpose hardware unit, it realizes radio frequency reception and emission, analog digital conversion and the digital-to-analogue conversion of the physical layer element of this wireless communication customer premises equipment;
All-purpose computer, it realizes that the digital baseband signal of wireless communication customer premises equipment physical layer element receives and send processing, and second layer data processing and the 3rd layer of controlled function, also realize control and configuration simultaneously, make described general purpose hardware unit work in the wireless communication system of appointment described general purpose hardware unit;
The common hardware interface, it realizes being connected between described all-purpose computer and the described general purpose hardware unit, makes digital baseband signal and other control signal transmit mutually between all-purpose computer and general purpose hardware unit.
2. a kind of wireless communication customer premises equipment based on software radio according to claim 1 is characterized in that:
Described all-purpose computer can be provided with the respective classes of this wireless communication customer premises equipment selectively according to user instruction, this wireless communication customer premises equipment can be configured to the wireless communication customer premises equipment of functional equivalent in the support voice and the transfer of data of mobile phone, perhaps functional equivalent is in the wireless communication customer premises equipment of only supporting transfer of data of data card, perhaps functional equivalent is in the access device of Home eNodeB, and perhaps functional equivalent is in the access device of wireless local network connecting point;
Described all-purpose computer is selected wireless communication protocol according to user instruction, receive and send processing capacity by disposing this all-purpose computer with the digital baseband signal of realizing this wireless communication protocol physical layer element, second layer data processing function, the 3rd layer of controlled function;
This wireless communication protocol can be cellular mobile communication agreement, wireless metropolitan area fidonetFido, protocol of wireless local area network, wireless personal area fidonetFido, satellite communication agreement, broadcast system agreement, military wireless communication protocol.
3. a kind of wireless communication customer premises equipment according to claim 2 based on software radio, it is characterized in that: described all-purpose computer can be according to the disposal ability of this wireless communication customer premises equipment, adopt the method for time division multiplexing or frequency division multiplexing selectively, this ustomer premises access equipment is set to support two or more wireless communication protocols simultaneously.
4. according to claim 2 or 3 described a kind of wireless communication customer premises equipments based on software radio, it is characterized in that: described all-purpose computer can be realized the automatic measuring ability of this wireless communication customer premises equipment to described wireless communication protocol by disposing described general purpose hardware unit, the relevant parameter of the wireless communication protocol that detection obtains can feed back to all-purpose computer by described common hardware interface, and the relevant parameter of the wireless communication protocol that the user obtains according to all-purpose computer is configured to support certain or certain several wireless communication protocol with this wireless communication customer premises equipment;
The relevant parameter of described wireless communication protocol comprises the classification of available communication systems, signal quality, service quality, service rate.
5. according to each described a kind of wireless communication customer premises equipment of claim 2～4, it is characterized in that based on software radio:
Described all-purpose computer disposes the function of described general purpose hardware unit according to selected wireless communication protocol and ustomer premises access equipment classification, comprise the center frequency point of selecting radio frequency to receive emission, radio frequency receives and sends duplex mode, and base band receives and sends the digital signal bandwidth.
6. according to each described a kind of wireless communication customer premises equipment of claim 1～5 based on software radio, it is characterized in that: described all-purpose computer can receive adjustment with emission parameter to described general purpose hardware unit, comprises the correction to frequency shift (FS), time migration, power excursion.
7. according to each described a kind of wireless communication customer premises equipment of claim 1～6, it is characterized in that: can comprise one or more sets radio-frequency modules in the described general purpose hardware unit based on software radio.
8. according to each described a kind of wireless communication customer premises equipment of claim 1～7, it is characterized in that based on software radio:
Described general purpose hardware unit can comprise the card reader device of subscriber identify module card, and perhaps described all-purpose computer can have authentification of user, mandate and settlement function.
9. according to each described a kind of wireless communication customer premises equipment of claim 1～8, it is characterized in that: can link to each other by one or more described common hardware interface between described general purpose hardware unit and the described all-purpose computer based on software radio.
10. according to a kind of wireless communication customer premises equipment of claim 9 based on software radio, it is characterized in that: described common hardware interface can be USB (USB) interface, peripheral hardware original paper interconnected (PCI) interface, PCMCIA card international federation (PCMCIA) interface, the IEEE1394 interface.
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| CN101945490A (en) * | 2010-09-03 | 2011-01-12 | 电子科技大学 | Software radio-based wireless communication system terminal equipment |
| CN102055556A (en) * | 2010-12-29 | 2011-05-11 | 重庆邮电大学 | Mobile communication terminal base band processing system based on generic technique |
| CN102448198A (en) * | 2010-10-12 | 2012-05-09 | 天津海润恒通高性能计算系统科技有限公司 | Home base station on basis of software radio |
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| CN102448198A (en) * | 2010-10-12 | 2012-05-09 | 天津海润恒通高性能计算系统科技有限公司 | Home base station on basis of software radio |
| CN102055556A (en) * | 2010-12-29 | 2011-05-11 | 重庆邮电大学 | Mobile communication terminal base band processing system based on generic technique |
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| CN102571317B (en) * | 2012-01-06 | 2016-04-27 | 因诺微科技(天津)有限公司 | Based on the method for data synchronization of pci bus and system in software radio system |
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