CN101697640B - 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 the ustomer premises access equipment of one or more agreements in following mobile communication protocol is realized, 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 support voice and data service simultaneously: the mobile phone supporting at least one cellular mobile communication agreement
B) only supported data business, to realize the ustomer premises access equipment that personal computer is surfed the Net whenever and wherever possible: the data card supporting at least one cellular mobile communication agreement
C) ustomer premises access equipment of premises voice and data service access is provided: the Home eNodeB (femto) supporting at least one 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 support voice and data service simultaneously: the mobile phone supporting WiMAX speech and function of surfing the Net
B) only supported data business, to realize the ustomer premises access equipment that personal computer is surfed the Net whenever and wherever possible: WiMAX card of surfing Internet, supports the computer of WiMAX function of surfing the Net
C) ustomer premises access equipment of premises voice and data service access is provided: the Home eNodeB supporting WiMAX
3) WLAN (wireless local area network) (WLAN) ustomer premises access equipment, especially based on the ustomer premises access equipment of WiFi:
A) support the ustomer premises access equipment of WiFi data service: WiFi card of surfing Internet, support the mobile phone of WiFi function of surfing the Net, support the computer of WiFi function of surfing the Net
B) ustomer premises access equipment that WiFi data service accesses is provided: the access point (AP) of WiFi
4) Wireless Personal Network (WPAN) ustomer premises access equipment, especially based on the ustomer premises access equipment of one or more agreements in following WPAN communication protocol, communication protocol comprises bluetooth (Bluetooth), ultra broadband (UWB, and IEEE 802.15):
5) satellite communication subscriber end equipment
6) broadcast system user receiving equipment, especially the ustomer premises access equipment of one or more agreements of following broadcast system is supported, comprise ANTENN AUDIO broadcast system, wireless digital TV-set broadcast system (DVB-T, DMB-TH), mobile TV system (DVB-H, CMMB, STIMI).Ustomer premises access equipment comprises: ANTENN AUDIO broadcasting receiver, wireless digital TV-set broadcast receiver, mobile TV receiver
7) Technology on Martial Wireless Communication ustomer premises access equipment, underwater sound wireless communication customer premises equipment
Above-mentioned wireless communication system user end equipment is generally realized by special hardware module, for cellular mobile communication ustomer premises access equipment, as shown in Figure 1, comprise: physical layer receiving element, physical layer transmitting element, second layer data processing unit, third layer control unit.Physical layer receiving element comprises Receiver Module, for received RF signal, and is converted to analog baseband signal; Analog-digital Converter module, is converted to digital signal by analog signal; Digital baseband transmission system module, for the solution mediation decoding of physical layer data signal.Physical layer transmitting element comprises digital baseband transmission system module, for for the coding of physical layer data signal and modulation; Digital-to-analogue conversion module, is converted to analog signal by digital signal; Radio frequency sending module, for upconvert baseband signals, and sends radiofrequency signal.Second layer data processing unit be used for packet packing, unpack, data re-transmission, data ciphering and deciphering.Third layer control unit for controlling the parameter needed for the second layer and physical layer entity, the distribution of Radio Resource and management, the measurement of wireless link and report.The realization of the ustomer premises access equipment of other wireless communication system or its subset identical with cellular mobile communication ustomer premises access equipment.
Each module of existing wireless communications ustomer premises access equipment is realized by special chip and special hardware circuit mostly, and its weak point is:
1) function singleness: special chip, in order to force down cost, only has relatively single function, cannot other system compatible.Such as, the base band signal processing chip of GSM cannot complete the base band signal process function of WCDMA.
2) scaling difficulty: hardware product is difficult to upgrading, along with the upgrading of communication system and communication protocol, the hardware of ustomer premises access equipment needs to change accordingly, and old ustomer premises access equipment cannot continue to use in new system.
3) development cost is high: the development process of special chip and hardware circuit is complicated, and especially the exploitation of chip needs the process such as flow, the manufacturing, and cost is difficult to reduce.
The hardware implementing problem of above-mentioned wireless communication system user end equipment, is present in other wireless communication system too.In recent years, the appearing as to solve the problem and provide thinking of software and radio technique.Software radio a kind ofly realizes with software the wireless communication designs that physical layer connects.The major advantage of software radio is its flexibility.In software radio, such as channel width, modulation and coding etc. can dynamic conditioning, to adapt to the change 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 occur for wireless communication customer premises equipment software radio solution general preferably.
CN101014103 gives for a kind of implementation based on software radio, proposes a kind of digital multimedia receiver be made up of specialized hardware Receiver Module, Analog-digital Converter module, common 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, cannot provide the emission function of wireless communication customer premises equipment, do not have to consider to realize dissimilar wireless communication customer premises equipment under unified structure.For simple WCDMA data card, this equipment needs to have transmitting and receiving function simultaneously, and the second layer of WCDMA and third layer processing capacity, when user roams to the region not supporting WCDMA, equipment needs the wireless communication transmissions agreement that capability switch is supported to GSM/GPRS/EGDE or other this region, and these are all 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, based on the basic thought of software radio, a kind of general wireless communication customer premises equipment is provided, available radio communication service can be selected neatly, the function of configure user end equipment according to user's request and residing environment.
This object 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 Converter module, and digital-to-analogue conversion module; The digital baseband signal that all-purpose computer realizes wireless communication customer premises equipment physical layer element receives and transmission processing, and second layer data processing and third layer controlling functions, also realize the control to described general purpose hardware unit and configuration, wireless communication system general purpose hardware unit being worked in specify simultaneously; Be connected by common hardware interface between computer with general purpose hardware unit, realize the connection between all-purpose computer and general purpose hardware unit, digital baseband signal and other control signal are mutually transmitted between all-purpose computer and general purpose hardware unit.
Further, all-purpose computer selects wireless communication protocol according to user instruction, user can according to current demand, select ustomer premises access equipment ustomer premises access equipment being configured to 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, time division multiplexing hardware device can be selected, or the method for frequency division multiplexing, ustomer premises access equipment is configured to support the ustomer premises access equipment more than a kind of wireless communication system simultaneously.Its advantage is that user can on same ustomer premises access equipment, the communication system that the method configured by computer software selects ustomer premises access equipment to support flexibly, save hardware cost expense, also according to the upgrading transition of user's needs and communication system, ustomer premises access equipment is transformed in time flexibly, accelerate 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 selects ustomer premises access equipment classification according to user instruction, ustomer premises access equipment can be configured to the support voice of functional equivalent in mobile phone and the ustomer premises access equipment of transfer of data according to current demand by user, or the ustomer premises access equipment that functional equivalent transmits in the only supported data of data card, or functional equivalent is in the ustomer premises access equipment providing data access of Home eNodeB (femto), or functional equivalent is in the ustomer premises access equipment providing data access of wireless local network connecting point (AP).Its advantage is that user can on same ustomer premises access equipment, environmentally and application demand, is selected the classification of ustomer premises access equipment flexibly, save hardware cost expense by the method for software merit rating, and required hardware quantity.
Further, user can select communication system base class, the base class configure generic hardware cell that all-purpose computer is selected according to user carries out wireless signal acquisition automatically, and relevant parameter (the such as available communication systems classification of wireless communications environment that will detect, signal quality) feed back to all-purpose computer by common hardware interface, the wireless communication system that all-purpose computer helps user to select service quality best according to the signal quality of detected various wireless communication systems, or help user to select most economical wireless communication system according to the service costs of detected various wireless communication systems, or according to the Attributions selection wireless communication system that other user has a preference for, and ustomer premises access equipment is configured to the ustomer premises access equipment of this wireless communication system.All-purpose computer passes to general purpose hardware unit for the parameter configuration order of general purpose hardware unit by common hardware interface.Its advantage is that user is not when having basic understanding for various wireless communication system general principle, attribute, still automatically can select the radio communication service be satisfied with the most.
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 strength 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 common hardware interface.Its advantage is that general purpose hardware unit in the unwitting situation of user, can be automatically configured through selective illumination the hardware cell of the air interface properties for adapting to certain wireless communication system.
Further, one or more sets radio-frequency modules can be comprised in general purpose hardware unit, when only there being a set of radio-frequency module, if need to realize radio frequency transmission and reception function (the radio-frequency module needs of the ustomer premises access equipment of such as cell mobile communication systems realize the transmitting for upward signal and the reception for downstream signal), radio-frequency module can be configured to work in half-duplex (Half Duplex) pattern, carry out when namely receiving and send difference, it is multiplexing that its advantage is for radio-frequency module, hardware cost is saved under the prerequisite of not losing QoS of customer, when there being two cover radio-frequency modules to exist, ustomer premises access equipment can be configured to the pattern working in full duplex (Full Duplex), and receive and send carry out simultaneously, when have exist more than a set of radio-frequency module time, one or more wireless communication systems that ustomer premises access equipment is configured to multiple frequency work simultaneously.
Further, all-purpose computer can carry out launching for general purpose hardware unit, the configuration of receiving parameter.Along with the carrying out of communication, the launch and accept centre frequency of ustomer premises access equipment, launch and accept Timing Synchronization, all may there is deviation because of factors such as the movements of user in launch and accept power.All-purpose computer can be revised for frequency shift (FS), time migration, power excursion by configure generic hardware cell, thus improve the radio communication quality of logical ustomer premises access equipment, save unnecessary energy waste, extend ustomer premises access equipment stand-by time, for user provides better service.All-purpose computer passes to general purpose hardware unit for the parameter configuration order of general purpose hardware unit by common hardware interface.
Further, general purpose hardware unit can comprise subscriber identify module card (SIM card, UIM card) card reader device, or all-purpose computer can have user authentication, mandate and settlement function (authentication, authorization and accounting), thus ustomer premises access equipment is when accessing certain wireless communication system, can carry out authentication, the operations such as charging.
Further, under the configuration of all-purpose computer, two or more ustomer premises access equipment can realize interconnecting between ustomer premises access equipment, realize point-to-point communication (Peer to Peer), save wireless communication system resource, improve user communication quality, reduce the cost that user uses radio communication.
Further, all-purpose computer provides application programming interface (API), and user can develop corresponding software according to demand, realizes novel wireless communication customer premises equipment, realizes special applications to meet particular demands.
Further, common hardware interface unit can comprise multiple parallel common hardware interface, thus for providing enough mutual bandwidth of signal between all-purpose computer and general purpose hardware unit.
Further, when the Bandwidth-Constrained of common hardware interface unit, or during general-purpose computer processes limited ability, ustomer premises access equipment can start or apply for the battery saving mode starting wireless communication system, especially, discontinuous reception modes (DRX) is started in LTE communication system, battery saving mode (Power Saving) is started in WiMAX communication system, thus reduce the average throughput of the digital signal that common hardware interface unit transmits, or reduce the demand for all-purpose computer digital signal processing capability.
Accompanying drawing explanation
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 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 realizes the digital baseband signal receiving processing module of the physical layer element of ustomer premises access equipment, the digital baseband signal transmission processing module of physical layer element, second layer data processing unit, third layer control unit, human-machine interface unit, ustomer premises access equipment control unit, and application programming interface (API).Wherein digital baseband signal receiving processing module carries out solution mediation decoding to receiving digital signals; Digital baseband signal transmission processing module is encoded to physical layer data signal and is modulated; Second layer data processing unit, for packet packing, unpack, data re-transmission, data ciphering and deciphering etc.; Third layer control unit, for controlling the parameter needed for the second layer and physical layer entity, the distribution of Radio Resource and management, the measurement of wireless link and report etc.; Human-machine interface unit realizes user for the control of ustomer premises access equipment and information interaction; Ustomer premises access equipment control unit realizes all-purpose computer for the configuration of ustomer premises access equipment and management, for the parameter configuration of general purpose hardware unit, comprise the control for the center frequency point of radio-frequency module, bandwidth, emission power amplifier and received power amplifier; Application programming interface unit provides USI for user, and user can develop corresponding software application according to demand.
In Fig. 2, general purpose hardware unit realizes the radio-frequency transmissions receiver module of the physical layer element of ustomer premises access equipment, Analog-digital Converter module, and digital-to-analogue conversion module, and wherein Receiver Module is used for received RF signal, and is converted to analog baseband signal; Analog-digital Converter module is used for analog signal to be converted to digital signal; Digital-to-analogue conversion module is used for digital signal to be converted to analog signal; Radio frequency sending module is used for upconvert baseband signals, and sends radiofrequency signal.The center frequency point of radio-frequency module, generation power, duplex mode, the bandwidth of Analog-digital Converter module, and the bandwidth of digital-to-analogue conversion module all can configure.For the configuration of general purpose hardware unit, realized by the ustomer premises access equipment control unit of all-purpose computer, configuration signal is transmitted by common hardware interface.
Fig. 2 Computer is connected by common hardware interface with between general purpose hardware unit, realizes digital baseband signal and mutually transmits between all-purpose computer and general purpose hardware unit.Common hardware interface can be USB (USB) interface, peripheral hardware original paper interconnected (PCI) interface, PCMCIA card international federation (PCMCIA) interface, IEEE1394 interface etc.
Schematic diagram wireless communication customer premises equipment being configured to 3GPP LTE ustomer premises access equipment is provided in 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 Converter module, and digital-to-analogue conversion module.All-purpose computer realizes the digital baseband signal transmission and reception process of 3GPP LTE ustomer premises access equipment, second layer data processing, and third layer (rrc layer) controls.Digital baseband signal receives and comprises channel estimating and OFDM demodulation system, antenna port demapping, OFDM resource demapping, MIMO demodulation, constellation point rectification, descrambling, deinterleaving, HARQ process, channel decoding, CRC check; Digital baseband signal sends and comprises CRC insertion, chnnel coding, HARQ process, interweaves, scrambler, and constellation point is modulated, and MIMO maps and precoding, OFDM resource mapping, antenna terminal mapping, pilots insertion, OFDM modulation.Second layer data processing comprises media access control sublayer data processing, the process of PDCP level of data, rlc sublayer data processing.Be connected by USB2.0 interface between general purpose hardware unit with all-purpose computer, realize data transmission.
Claims (8)
1. based on a wireless communication customer premises equipment for software radio, it is characterized in that, comprising: general purpose hardware unit, it realizes radio frequency reception and transmitting, Analog-digital Converter and the digital-to-analogue conversion of the physical layer element of this wireless communication customer premises equipment, all-purpose computer, the digital baseband signal that it realizes wireless communication customer premises equipment physical layer element receives and transmission processing, and second layer data processing and third layer controlling functions, also realize the control to described general purpose hardware unit and configuration simultaneously, described general purpose hardware unit is made to work in the wireless communication system of specifying, wherein, second layer data processing, comprise the packing of packet, unpack, data re-transmission, data encrypting and deciphering, third layer controls, comprise and control the second layer and the parameter needed for physical layer entity, the distribution of Radio Resource and management, the measurement of wireless link and report, common hardware interface, it realizes the connection between described all-purpose computer and described general purpose hardware unit, and digital baseband signal and other control signal are mutually transmitted between all-purpose computer and general purpose hardware unit, described all-purpose computer can arrange 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 support voice of functional equivalent in mobile phone and the wireless communication customer premises equipment of transfer of data, or the wireless communication customer premises equipment that functional equivalent transmits in the only supported data of data card, or functional equivalent is in the access device of Home eNodeB, or functional equivalent is in the access device of wireless local network connecting point, described all-purpose computer selects wireless communication protocol according to user instruction, receive and transmission processing function with the digital baseband signal realizing this wireless communication protocol physical layer element by configuring this all-purpose computer, second layer data processing function, third layer controlling functions, 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 protocols, broadcast system agreement, Technology on Martial Wireless Communication agreement, described all-purpose computer can 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 can support two or more wireless communication protocols simultaneously, and, when the Bandwidth-Constrained of common hardware interface unit, or during general-purpose computer processes limited ability, this wireless communication customer premises equipment can start the battery saving mode of wireless communication system, discontinuous reception modes DRX is started in LTE communication system, battery saving mode Power Saving is started in WiMAX communication system, thus reduce the average throughput of the digital signal that common hardware interface unit transmits, or the demand reduced all-purpose computer digital signal processing capability.
2. a kind of wireless communication customer premises equipment based on software radio according to claim 1, it is characterized in that: described all-purpose computer can realize the automatic detection function of this wireless communication customer premises equipment to described wireless communication protocol by configuring described general purpose hardware unit, the relevant parameter detecting the wireless communication protocol obtained can feed back to all-purpose computer by described common hardware interface, this wireless communication customer premises equipment is configured to support certain or certain several wireless communication protocol by the relevant parameter of the wireless communication protocol that user obtains according to all-purpose computer, the relevant parameter of described wireless communication protocol comprises the classification of available communication systems, signal quality, service quality, service costs.
3. a kind of wireless communication customer premises equipment based on software radio according to any one of claim 1 ~ 2, it is characterized in that: described all-purpose computer configures 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 selecting radio frequency reception to launch, radio frequency reception sends duplex mode, and Baseband Receiver sends digital signal bandwidth.
4. a kind of wireless communication customer premises equipment based on software radio according to any one of claim 1 ~ 2, it is characterized in that: described all-purpose computer can receive described general purpose hardware unit and the adjustment of emission parameter, comprises the correction to frequency shift (FS), time migration, power excursion.
5. a kind of wireless communication customer premises equipment based on software radio according to any one of claim 1 ~ 2, is characterized in that: can comprise one or more sets radio-frequency modules in described general purpose hardware unit.
6. a kind of wireless communication customer premises equipment based on software radio according to any one of claim 1 ~ 2, it is characterized in that: described general purpose hardware unit can comprise the card reader device of subscriber identify module card, or described all-purpose computer can have user authentication, mandate and settlement function.
7. a kind of wireless communication customer premises equipment based on software radio according to any one of claim 1 ~ 2, is characterized in that: can be connected by common hardware interface described in one or more between described general purpose hardware unit and described all-purpose computer.
8. a kind of wireless communication customer premises equipment based on software radio according to claim 7, it is characterized in that: described common hardware interface can be general-purpose serial bus USB interface, the interconnected pci interface of peripheral hardware original paper, PCMCIA card international federation pcmcia interface, IEEE1394 interface.
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| 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 |
| 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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| CN106019320A (en) * | 2016-05-16 | 2016-10-12 | 华东师范大学 | Satellite navigation signal recording method based on universal software radio equipment |
| CN108206704A (en) * | 2016-12-20 | 2018-06-26 | 天津大学（青岛）海洋工程研究院有限公司 | A kind of underwater acoustic communication of dynamic reconfigurable receives system |
| CN108075840B (en) * | 2017-11-16 | 2021-02-09 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | Automatic calibration system for radio frequency power parameters of wireless communication terminal |
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