CN105338601A - Wireless communication system used for multiple access - Google Patents

Abstract

The present invention relates to the field of communication systems, especially a wireless communication system for multiple access, including a user experience system and a mobile system controlled by the user experience system. A wireless communication system capable of reducing the power consumption of a radio receiver in a multiple access wireless system, the system preferably enables the level of the required control signals to be received and decoded to be reduced to a minimum level, furthermore, the system is capable of The access time to the space of such receivers is reduced, thereby reducing power consumption without loss of performance or reception quality.

Description

A wireless communication system for multiple access

technical field

The present invention relates to the field of communication systems, in particular to a wireless communication system for multiple access.

Background technique

Orthogonal Frequency Division Multiplexing (OFDM), a digital multi-carrier modulation scheme, is a well known one. It uses a large number of closely spaced subcarriers that are orthogonal to each other. Each subcarrier is modulated with a conventional modulation scheme (eg, quadrature amplitude modulation (QAM)) at a low symbol rate, maintaining the data rate at the same bandwidth as conventional single-carrier modulation schemes. The main advantage of OFDM over single-carrier schemes is its ability to cope with severe channel conditions such as high-frequency attenuation of copper wires, narrow-band interference and frequency-selective fading in multipath receivers without the need for complex equalization filters. Channel equalization is simplified because OFDM can be viewed as using many slowly modulated narrowband signals instead of one rapidly modulated wideband signal. Low symbol rates enable the use of a practicable guard interval between symbols, making it It is possible to handle time propagation and cancel inter-symbol interference (ISI).

At present, the wireless mobile communication system has evolved to four generations (ie 4G network - work). The promise of the evolution to 4G increases the number of subscribers and the increase in subscriber bandwidth. As mobility increases, these new systems will require a substantial increase in system requirements. Several new technology programs will be used to meet the increased system requirements. This technology is Orthogonal Division Multiple Access (OFDMA), which proposes a wireless technology and Ultra Mobile Broadband. Another technique for increasing system capacity (i.e., throughput, coverage, user rate, etc.) is called "Multiple-Input Multiple-Output (MIMO), where multiple transmit and receive antennas are used.

In modern broadband multiple access systems, each symbol has a very large number of bits. In addition, the tasks that must be performed to send and receive over the radio are often very complex and require significant computing resources. This typically results in processing delays and the relatively large amount of energy required to send and receive a symbol. When a user starts or ends a network service, all control signals are passed to all users, frame by frame and frame by frame. This mode of operation is allowed, but the efficiency is very low. From the network point of view, because the control signaling overhead is quite high, the network efficiency is greatly reduced.

Contents of the invention

The technical problem to be solved by the present invention is: in order to overcome the above-mentioned problems, provide a wireless communication system for multiple access, which can effectively reduce the power consumption of the radio receiver.

The technical solution adopted by the present invention to solve the technical problem is: a wireless communication system for multiple access, including a user experience system and a mobile system controlled by the user experience system,

The user experience system includes a radio frequency front-end module, a transmitter, a receiver, a baseband processor, a computer, a host, a control processor, a power management module and a memory, the host is connected to the computer through a terminal interface, and the computer and the baseband process The baseband processor processes the frame and sends it to the RF front-end module through the transmitter. The RF front-end module transmits the signal through a coupled antenna, and the RF front-end module receives the signal through another coupled antenna signal and feeds it back to the receiver. receiving, so that the received signal is transmitted to the baseband processor for processing, the power management module provides power for the control processor, the control processor is respectively connected with the memory and the computer, and the transmitter includes a transmitting frequency converter and a The digital-to-analog converter connected to the transmitting up-frequency device, the receiver includes a receiving down-frequency device and an analog-to-digital converter connected to the receiving down-frequency device,

The mobile system includes a mobile station, a USB power supply and an AC/AD adapter, the USB power supply and the AC/AD adapter are electrically connected to the mobile station respectively, and the mobile station includes a digital baseband processor, several radio frequency transceivers, FM receiving machine, audio codec, subscriber identity module, external memory, display controller, TV tuner, camera, multimedia codec, GPS, vibrator, and batteries for powering digital baseband processors and batteries connected to them Management module, digital baseband processor is connected with RF transceiver, FM receiver, audio codec, subscriber identification module, external memory, display controller, TV tuner, camera, multimedia encoder, GPS, vibrator , the radio frequency transceiver is equipped with a control signaling transmission information module, the radio frequency transceiver, FM receiver, TV tuner, and GPS are all connected with antennas, the audio codec is connected with a speaker and a microphone, and the display control A display is connected to the device, and the radio frequency transceiver is signal-connected with the radio frequency front-end module through an antenna.

The memory includes static random access memory and erasable programmable read-only memory.

The digital baseband processor is also connected with a USB and an input keyboard.

The beneficial effect of the present invention is that a wireless communication system for multiple access of the present invention can reduce the power consumption of the radio receiver in the multiple access wireless system, and the system preferably makes the power of the required control signal The level is received and decoded to reduce to a minimum level, moreover, the system is able to minimize the space access time of this receiver, thereby reducing power consumption without loss of performance or reception quality.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a block diagram of the present invention;

Fig. 2 is a structural block diagram of the user experience system of the present invention;

Fig. 3 is a structural block diagram of the mobile system of the present invention.

In the figure 1. User experience system, 11. RF front-end module, 12. Transmitter, 12-1. Transmitting up-frequency device, 12-2. Digital-to-analog converter, 13. Receiver, 13-1. Receiving down-frequency device , 13-2. Analog-to-digital converter, 14. Baseband processor, 15. Computer, 16. Host, 17. Control processor, 18. Power management module, 19. Memory, 2. Mobile system, 21. Mobile station , 21-1. Digital baseband processor, 21-2. Radio frequency transceiver, 21-2-1. Control signaling transmission information module, 21-3. FM receiver, 21-4. Audio codec, 21-5. Subscriber Identification Module, 21-6. External Memory, 21-7. Display Controller, 21-8. TV Tuner, 21-9. Camera, 21-10. Multimedia Encoder, 21-11. GPS , 21-12. vibrator, 21-13. battery, 21-14. battery management module, 21-15. speaker, 21-16. microphone, 21-17. display, 21-18.USB, 21-19. Input keyboard, 22.USB power supply, 23.AC/AD adapter.

detailed description

The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

As shown in FIG. 1 , a wireless communication system for multiple access includes a user experience system 1 and a mobile system 2 controlled by the user experience system 1 .

As shown in Figure 2, a wireless communication system for multiple access, the user experience system 1 includes a radio frequency front-end module 11, a transmitter 12, a receiver 13, a baseband processor 14, a computer 15, a host 16, a control Processor 17, power management module 18 and memory 19, host computer 16 is connected with computer 15 through terminal interface, power management module 18 provides electric energy for control processor 17, control processor 17 is connected with memory 19 and computer 15 respectively, memory 19 comprises static random access memory 19-1, erasable programmable read-only memory 19-2, static random access memory 19-1, erasable programmable read-only memory 19-2 is connected with control processor 17, computer 15 and The baseband processors 14 are connected, and the baseband processor 14 processes the frames and transmits the frequency converter 12-1, and the transmitter frequency converter 12-1 sends it to the radio frequency front-end module 11 through the digital-to-analog converter 12-2, and the radio frequency front-end module 11 transmits a signal through a coupled antenna, and the radio frequency front-end module 11 receives a signal through another coupled antenna and feeds back the signal to the analog-to-digital converter 13-2, and the analog-to-digital converter 13-2 passes through the receiving frequency converter 13- 1 for reception, so that the received signal is transmitted to the baseband processor 14 for processing, the processed signal is fed back to the computer 15, and finally transmitted to the host computer 16.

A kind of wireless communication system for multiple access as shown in Figure 3, mobile system 2 comprises mobile station 21, USB power supply 22 and AC/AD adapter 23, USB power supply 22 and AC/AD adapter 23 and mobile station respectively 21 are electrically connected, and the mobile station 21 includes a digital baseband processor 21-1, several radio frequency transceivers 21-2, an FM receiver 21-3, an audio codec 21-4, a subscriber identification module 21-5, External memory 21-6, display controller 21-7, TV tuner 21-8, camera 21-9, multimedia encoder 21-10, GPS21-11, vibrator 21-12 and digital baseband processor 21- 1 The battery 21-13 providing electric energy and the battery management module 21-14 connected to the battery 21-13, the digital baseband processor 21-1 and the radio frequency transceiver 21-2, the FM receiver 21-3, the audio coder Decoder 21-4, Subscriber Identification Module 21-5, External Memory 21-6, Display Controller 21-7, TV Tuner 21-8, Camera 21-9, Multimedia Encoder 21-10, GPS21-11, Vibration 21-12 are connected, and the radio frequency transceiver 21-2 is equipped with a control signaling transmission information module 21-2-1, a radio frequency transceiver 21-2, an FM receiver 21-3, and a TV tuner 21-8 , GPS21-11 are connected with antenna, audio codec 21-4 is connected with speaker 21-15 and microphone 21-16, display controller 21-7 is connected with display 21-17, radio frequency transceiver 21-2 It is connected to the radio frequency front-end module 11 through the antenna, and the digital baseband processor 26 is also connected with a USB21-18 and an input keyboard 21-19.

In a wireless communication system for multiple access of the present invention, the baseband processor 14 is coupled to the transmitter 12 and the receiver 13 to transmit user ID information, and the current frame is encoded as the first decoded entity into one or more The code word is sent to the radio frequency transceiver 21-2 through the radio frequency front-end module, if the corresponding user ID distribution is found in the list to obtain the control signaling transmission information of the current frame, otherwise stop the reception of the current frame, the radio frequency transceiver 21-2 2 After receiving the information, it is transmitted to the digital baseband processor 21-1, the keyboard 21-19 dials, and the vibrator 21-12 reminds the user that USB21-18 or other interfaces are connected (for example, SPI, SMO, PCI, etc. etc.) provides a serial connection to the user's computer or other equipment, an FM receiver 21-3 and an antenna provide the user with the ability to listen to FM broadcasts, and the external power supply is connected and operated through the USB power supply 22 and the AC/AD adapter 23 The battery management module 21-14 provides charging and discharging of the battery, and the user identification module 21-5 provides an interface for storing user data such as address book entries to the user's SIM card, etc. SIM card is used to represent any type of smart card Used to save user-related information, such as identity and contact information, authentication, authorization and accounting (AAA), configuration information, etc. Different standards use different names, for example, GSMSIM card, US UMTS and LTE and IMS client.

Inspired by the above-mentioned ideal embodiment according to the present invention, through the above-mentioned description content, relevant workers can make various changes and modifications within the scope of not departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, but must be determined according to the scope of the claims.

Claims (3)

1. A wireless communication system for multiple access, characterized in that: comprising a user experience system (1) and a mobile system (2) controlled by the user experience system (1), The user experience system (1) includes a radio frequency front-end module (11), a transmitter (12), a receiver (13), a baseband processor (14), a computer (15), a host (16), a control processor (17), power management module (18) and memory (19), main frame (16) is connected with computer (15) by terminal interface, and computer (15) is connected with baseband processor (14), and baseband processor (14) send to radio frequency front-end module (11) by transmitter (12) after processing frame, radio frequency front-end module (11) transmits signal by a coupled antenna, radio frequency front-end module (11) passes another coupled antenna signal The received signal is fed back to the receiver (12) for reception, so that the received signal is transmitted to the baseband processor (14) for processing, and the power management module (18) provides electric energy for the control processor (17) to control Processor (17) is connected with storage device (19) and computer (15) respectively, and transmitter (12) comprises transmitting up-frequency device (12-1) and the digital-analog that is connected with transmitting up-frequency device (12-1). Converter (12-2), receiver (13) comprises receiving down-frequency device (13-1) and the analog-to-digital converter (13-2) connected with receiving down-frequency device (13-1), The mobile system (2) includes a mobile station (21), a USB power supply (22) and an AC/AD adapter (23), and the USB power supply (22) and the AC/AD adapter (23) are respectively connected to the mobile station (21). Electrically connected, the mobile station (21) includes a digital baseband processor (21-1), several radio frequency transceivers (21-2), an FM receiver (21-3), and an audio codec (21-4) , subscriber identity module (21-5), external memory (21-6), display controller (21-7), TV tuner (21-8), camera (21-9), multimedia encoder (21-10 ), GPS (21-11), vibrator (21-12), and a battery (21-13) providing electrical energy for the digital baseband processor (21-1) and a battery management device connected to the battery (21-13) Module (21-14), digital baseband processor (21-1), radio frequency transceiver (21-2), FM receiver (21-3), audio codec (21-4), subscriber identification module (21-5), external memory (21-6), display controller (21-7), TV tuner (21-8), camera (21-9), multimedia encoder (21-10), GPS ( 21-11), the vibrator (21-12) is connected, and the radio frequency transceiver (21-2) is provided with a control signaling transmission information module (21-2-1), and the radio frequency transceiver (21-2) , FM receiver (21-3), TV tuner (21-8), GPS (21-11) are all connected with antenna, and described audio codec (21-4) is connected with loudspeaker (21-15 ) and microphone (21-16), display controller (21-7) is connected with display (21-17), and described radio frequency transceiver (21-2) is by antenna and radio frequency front-end module (11) phase signal connect. 2. A kind of wireless communication system that is used for multiple access according to claim 1, is characterized in that: described memory (19) comprises SRAM (19-1), erasable programmable read-only The memory (19-2), the static random access memory (19-1), the erasable programmable read-only memory (19-2) are connected with the control processor (17). 3. a kind of wireless communication system that is used for multiple access according to claim 1 is characterized in that: also be connected with USB (21-18) and input keyboard on the described digital baseband processor (26) (21-19).