CN101287182A - Wireless communication system, method and device - Google Patents
Wireless communication system, method and device Download PDFInfo
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- CN101287182A CN101287182A CNA2007100905831A CN200710090583A CN101287182A CN 101287182 A CN101287182 A CN 101287182A CN A2007100905831 A CNA2007100905831 A CN A2007100905831A CN 200710090583 A CN200710090583 A CN 200710090583A CN 101287182 A CN101287182 A CN 101287182A
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Abstract
The invention discloses a wireless communication system that comprises a wireless access device and a signal processing device which communicate with each other by power lines. The wireless access device sends the signal received from a wireless terminal to the signal processing device by the power lines and sends the signal received from the signal processing device to the wireless terminal; the signal processing device sends the signal received from the wireless access device to a backbone network and sends the signal received from the backbone network to the wireless access device by the power lines. The invention also discloses a wireless communication method, the wireless access device and the signal processing device which are applicable to the wireless communication system. The invention adopts a power grid with large coverage to transmit wireless signal so as to enlarge the network coverage of the wireless signal and reduce the radiation to human body.
Description
Technical field
The present invention relates to wireless communication technology field, especially relate to a kind of wireless communication system, method and device.
Background technology
Along with development of wireless communication devices, people are more and more higher to the requirement of radio communication service quality.Therefore, now gradually by first generation mobile communication system that adopts analogue modulation system and the second generation cellular mobile system that adopts digital modulation mode, to the 3-G (Generation Three mobile communication system) transition.
3-G (Generation Three mobile communication system), with WCDMA (Wideband Code Division MultipleAccess, Wideband Code Division Multiple Access (WCDMA)) is example, this system comprises Radio Access Network and core network two large divisions, Radio Access Network adopt advanced WCDMA technology, core network then adopt flexibly, can be from the layered architecture of GSM (Global System Mobile, global system for mobile communications) network smooth evolution.Radio Access Network provides the binding of WCDMA terminal equipment and core network, and the management of responsible Radio Resource and allotment.This network mainly comprises two category nodes: base station and RNC (Radio NetworkController, radio network controller).The transmitting-receiving and the bottom layer treatment of wireless signal is responsible in the base station, otherwise and the signal that will from air interface, receive forward to RNC or; RNC is responsible for the interface of wireless access network and core net, also is responsible for the management of on-air radio resource.
The WCDMA system follows the standard of 3GPP (Third Generation Partnership Projects, third generation partnership project), and this technical standard is just more and more ripe and perfect.Existing WCDMA system adopts and improves power system capacity by hierarchy two-layer or that the multi-layer honeycomb system forms, reduces the blind area, and equalizing system is loaded, and cuts operating costs, and provides service for the portable terminal of different translational speeds.This system utilizes Pico cell to carry out indoor covering, and this coverage mode with very low transmitting power generally can only cover tens meters, and it is mainly used in location, city center and " focus " area.When base station and transmission network equipment and RNC not when same machine room and distance are far away, laying-out is difficulty relatively, and adopts microwave transmission, every complete equipment comprises indoor unit and outdoor unit, connects by cable between the indoor and outdoor unit.And when setting up the base station, in city machine room addressing is not very convenient, therefore existing WCDMA employing macro base station+RRU (the Radio Frequency Remote Unit of system, remote radio unit (RRU)) scheme, finish outdoor covering by macro base station, combine with indoor distributed system by RRU and realize indoor covering.
But the transmission of wireless signals of existing WCDMA system all relies on the base station.Therefore, this system need set up the base station again, and cost is higher, and the initial stage network coverage is incomplete.In addition, because the transmitting power of base station is bigger, no matter adopting Pico cell still is schemes such as RRU, and its electromagnetic radiation to human body is all bigger.
Summary of the invention
The embodiment of the invention provides a kind of wireless communication system, method and device, causes the infull defective of the initial stage network coverage to overcome in the prior art owing to setting up the base station again.
For achieving the above object, the technical scheme of one embodiment of the present of invention provides a kind of wireless communication system, comprises wireless access device and signal processing apparatus, and described wireless access device and signal processing apparatus communicate by power line; Described wireless access device will send to described signal processing apparatus by power line from the signal that wireless terminal receives, and will send to wireless terminal from the signal that described signal processing apparatus receives; Described signal processing apparatus will send to backbone network from the signal that described wireless access device receives, and will send to described wireless access device by power line from the signal that backbone network receives.
The technical scheme of one embodiment of the present of invention provides a kind of wireless communications method, may further comprise the steps: after will passing through power line transmission from the signal that wireless terminal receives, send to backbone network; After will passing through power line transmission from the signal that backbone network receives, send to wireless terminal.
The technical scheme of one embodiment of the present of invention provides a kind of wireless access device, comprises wireless transmit/receive units and power line Transmit-Receive Unit; After the signal that described wireless transmit/receive units is used for receiving from wireless terminal carries out wireless channel decoding, wireless despreading and demodulation, send to described power line Transmit-Receive Unit, and after will carrying out wireless channel coding and multiplexing, wireless frequency expansion and modulation from the signal that described power line Transmit-Receive Unit receives, send to wireless terminal; After the signal that described power line Transmit-Receive Unit is used for receiving from described wireless transmit/receive units carries out power line modulation and power line channel coding, send to power line, and will carry out power line from the signal that power line receives and separate and be in harmonious proportion after the power line channel decoding, send to described wireless transmit/receive units.
The technical scheme of one embodiment of the present of invention provides a kind of signal processing apparatus, comprises power line processing unit and radio management unit; The signal that described power line processing unit is used for receiving from power line carries out power line and separates and be in harmonious proportion after the power line channel decoding, send to described radio management unit, and after will carrying out power line modulation and power line channel coding from the signal that described radio management unit receives, send to power line; The signal that described radio management unit is used for receiving from described power line processing unit sends to backbone network after carrying out the wire signal reconstruction, and after will carrying out the radio management processing from the signal that backbone network receives, sends to described power line processing unit.
The technical scheme of the embodiment of the invention has the following advantages at least:
The embodiment of the invention is carried out the transmission of wireless signal by adopting the very big electric power networks of coverage rate, thereby has increased the network coverage face of wireless signal.
Description of drawings
Fig. 1 is a kind of wireless communication system architecture figure of the embodiment of the invention;
Fig. 2 is the structure chart of wireless access device in the embodiment of the invention;
Fig. 3 is the structure chart of a kind of Open-Loop Transmit Diversity of the embodiment of the invention;
Fig. 4 is the structure chart of a kind of Closed-Loop Transmit Diversity of the embodiment of the invention;
Fig. 5 is the structure chart of signal processing apparatus in the embodiment of the invention;
Fig. 6 is the transfer process figure of a kind of upward signal of the embodiment of the invention;
Fig. 7 is the transfer process figure of a kind of downstream signal of the embodiment of the invention.
Embodiment
Realization principle of the present invention is to adopt PLC (Power Line Communication, high speed power line communication technology) to carry out the transmission of wireless signal.PLC is in a kind of utilization, low-voltage network is as communication media, realizes the communication technology of Integrated Services Transmission such as data, speech, image.The PLC technology makes full use of the most the electric power networks resource of popularizing, and construction speed is fast, small investment, indoor need not the wiring; And the transmitting device of wireless signal can be integrated on the indoor power device, install simple, be provided with flexibly.
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail:
A kind of wireless communication system of the embodiment of the invention comprises backbone network 11, access server 12, signal processing apparatus 13, transformer 14, power network 15, inductance 16, wireless access device 17 and wireless terminal 18 as shown in Figure 1.Wherein, access server 12 is connected by transmission mediums such as optical fiber or coaxial cables with backbone network 11 and signal processing apparatus 13 respectively, carries out information exchange; Wireless access device 17 and signal processing apparatus 13 communicate by power line, and this power line inserts power network 15 by inductance 16 and transformer 14; Wireless terminal 18 carries out radio communication with wireless access device 17.
A kind of structure of wireless access device 17 comprises power line Transmit-Receive Unit 21, wireless transmit/receive units 22 and transmit diversity processing unit 23 as shown in Figure 2; Wherein, wireless transmit/receive units 22 communicates with power line Transmit-Receive Unit 21 and transmit diversity processing unit 23 respectively.The signal that power line Transmit-Receive Unit 21 is used for receiving from wireless transmit/receive units 22 sends to signal processing apparatus 13 after carrying out power line modulation and power line channel coding; To carry out power line from the signal that signal processing apparatus 13 receives and separate and be in harmonious proportion after the power line channel decoding, send to wireless transmit/receive units 22.The signal that wireless transmit/receive units 22 is used for receiving from wireless terminal 18 sends to power line Transmit-Receive Unit 21 after carrying out wireless channel decoding, wireless despreading and demodulation; After will carrying out wireless channel coding and multiplexing, wireless frequency expansion and modulation from the signal that power line Transmit-Receive Unit 21 receives, send to wireless terminal 18.
When wireless access device 17 comprises a plurality of antennas, and these a plurality of antennas are when having the distribution of hash formula, and transmit diversity processing unit 23 carries out the coding/decoding of distribution signal.Transmit diversity is meant in order to reduce the interference between the down physical channel, cooperates the reception of wireless terminal 18 better, and wireless access device 17 adopts two orthogonal antennas to send a kind of different modulated signals of information when emission.Transmit diversity comprises open loop and closed loop dual mode, wherein, the structure of a kind of Open-Loop Transmit Diversity of the embodiment of the invention as shown in Figure 3, a kind of structure of Closed-Loop Transmit Diversity is as shown in Figure 4.When wireless access device comprises a plurality of antenna, after the data of its transmission process distribution Space Time Coding and the spectrum-spreading and scrambling, be mapped to a transmitting antenna; Signal at first carries out demultiplexing by behind the wireless channel in reception antenna, recover initial transmission data by demodulation, decoding then.In Closed-Loop Transmit Diversity, wireless access device also comprises the feedback according to wireless terminal, signal is weighted the process of processing.
The signal that signal processing apparatus 13 is used for receiving from wireless access device 17 sends to backbone network 11 by access server 12, and backbone network 11 is sent to wireless access device 17 by the signal that access server 12 sends by power line.A kind of structure of signal processing apparatus 13 comprises power line processing unit 51 and radio management unit 52 as shown in Figure 5.The signal that power line processing unit 51 is used for receiving from wireless access device 17 carries out power line to be separated and is in harmonious proportion after the power line channel decoding, sends to radio management unit 52; After will carrying out power line modulation and power line channel coding from the signal that radio management unit 52 receives, send to wireless access device 17; The signal that radio management unit 52 is used for receiving from power line processing unit 51 sends to backbone network 11 by access server 12 after carrying out the wire signal reconstruction; The signal that backbone network 11 is sent by access server 12 carries out sending to power line processing unit 51 after radio management handles, and described radio management can comprise SIM system information management, dedicated channel management and common channel management etc.
When adopting wireless communication system shown in Figure 1, a kind of wireless communications method of the embodiment of the invention comprises: wireless access device 17 will send to backbone network by signal processing apparatus 13 after will passing through power line transmission from the signal that wireless terminal 18 receives; Signal processing apparatus 13 will send to wireless terminal 18 by wireless access device 17 after will passing through power line transmission from the signal that backbone network receives.Wherein, the transfer process of upward signal may further comprise the steps as shown in Figure 6:
Step s601, wireless terminal 18 through after wireless channel coding and multiplexing, wireless frequency expansion and the modulation, carries out voice and/or data-signal the framing processing, and this signal is sent to wireless access device 17.
Step s602, the wireless transmit/receive units 22 in the wireless access device 17 will carry out wireless channel decoding, wireless despreading and demodulation from the signal that wireless terminal 18 receives, and then this signal be sent to the power line Transmit-Receive Unit 21 in the wireless access device 17.
Step s603, power line Transmit-Receive Unit 21 will carry out power line modulation and power line channel coding from the signal that wireless transmit/receive units 22 receives.
Step s604, power line Transmit-Receive Unit 21 will send to signal processing apparatus 13 by power line through the signal that step s603 handles.
Step s605, the power line processing unit 51 in the signal processing apparatus 13 will carry out power line from the signal that wireless access device 17 receives and separate and be in harmonious proportion after the power line channel decoding, send to the radio management unit 52 in the signal processing apparatus 13.
Step s606, radio management unit 52 will send to backbone network 11 by access server 12 after will carrying out the wire signal reconstruction from the signal that power line processing unit 51 receives.
The transfer process of downstream signal may further comprise the steps as shown in Figure 7:
Step s701, backbone network 11 sends signal to signal processing apparatus 13 by access server 12.
Step s702, after radio management unit 52 in the signal processing apparatus 13 carries out the radio management processing with this signal, send to the power line processing unit 51 in the signal processing apparatus 13, described radio management can comprise SIM system information management, dedicated channel management and common channel management etc.
Step s703, power line processing unit 51 carries out power line modulation and power line channel coding with this signal.
Step s704, power line processing unit 51 sends to wireless access device 17 with this signal by power line.
Step s705, the power line Transmit-Receive Unit 21 in the wireless access device 17 carry out power line with this signal and separate and be in harmonious proportion after the power line channel decoding, send to the wireless transmit/receive units 22 in the wireless access device 17.
Step s706, wireless transmit/receive units 22 send to wireless terminal 18 after this signal is carried out wireless channel coding and multiplexing, wireless frequency expansion and modulation.
It needs to be noted, the executive agent of each step only is a kind of more excellent selection in the transfer process of above-described uplink signal transmissions flow process and downstream signal, these executive agents are used for the method described in the foregoing description more clearly is described, and are not used for the method described in the foregoing description that limits.
In an embodiment of the present invention, wireless access device and signal processing apparatus communicate by power line, and wireless access device can be integrated on the power device or exist with docking device independently, therefore need not to build powerful base station, has reduced cost.In addition, because wireless access device is integrated on the power device or exist with docking device independently, make that the access distance of wireless terminal is shorter, wireless terminal and wireless access device can maintain on the lower transmitting power, and be littler to the radiation of human body.Further, the method that embodiments of the invention utilize power line interface that wireless access device is installed has very big flexibility, can avoid existing wireless communications system initial stage problem, the problem includes: some cover the problem of blind spot.
The above only is embodiments of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (17)
1, a kind of wireless communication system is characterized in that, comprises wireless access device and signal processing apparatus, and described wireless access device and signal processing apparatus communicate by power line;
Described wireless access device will send to described signal processing apparatus by power line from the signal that wireless terminal receives, and will send to wireless terminal from the signal that described signal processing apparatus receives;
Described signal processing apparatus will send to backbone network from the signal that described wireless access device receives, and will send to described wireless access device by power line from the signal that backbone network receives.
2, wireless communication system according to claim 1 is characterized in that described wireless access device comprises wireless transmit/receive units and power line Transmit-Receive Unit;
Described wireless transmit/receive units will send to described power line Transmit-Receive Unit after will carrying out wireless channel decoding, wireless despreading and demodulation from the signal that wireless terminal receives; After will carrying out wireless channel coding and multiplexing, wireless frequency expansion and modulation from the signal that described power line Transmit-Receive Unit receives, send to wireless terminal;
Described power line Transmit-Receive Unit will send to described signal processing apparatus after will carrying out power line modulation and power line channel coding from the signal that described wireless transmit/receive units receives; To carry out power line from the signal that described signal processing apparatus receives and separate and be in harmonious proportion after the power line channel decoding, send to described wireless transmit/receive units.
3, as wireless communication system as described in the claim 2, it is characterized in that described wireless access device also comprises the transmit diversity processing unit, described transmit diversity processing unit carries out the coding/decoding of distribution signal.
4, wireless communication system according to claim 1 is characterized in that described signal processing apparatus comprises power line processing unit and radio management unit;
Described power line processing unit will carry out power line from the signal that described wireless access device receives to be separated and is in harmonious proportion after the power line channel decoding, sends to described radio management unit; After will carrying out power line modulation and power line channel coding from the signal that described radio management unit receives, send to described wireless access device;
Described radio management unit will send to backbone network after will carrying out the wire signal reconstruction from the signal that described power line processing unit receives; After will carrying out the radio management processing from the signal that backbone network receives, send to described power line processing unit.
5, wireless communication system according to claim 1 is characterized in that described wireless access device is integrated on the power device.
6, wireless communication system according to claim 1 is characterized in that, described wireless access device is a docking device independently.
7, wireless communication system according to claim 1 is characterized in that, described signal processing apparatus communicates by optical fiber or coaxial cable and backbone network.
8, wireless communication system according to claim 1 is characterized in that described power line is connected to power network by inductance and transformer.
9, a kind of wireless communications method is characterized in that, may further comprise the steps:
After will passing through power line transmission from the signal that wireless terminal receives, send to backbone network;
After will passing through power line transmission from the signal that backbone network receives, send to wireless terminal.
10, as wireless communications method as described in the claim 9, it is characterized in that, describedly will send to backbone network through after the power line transmission, specifically comprise from the signal that wireless terminal receives:
To carry out power line modulation and power line channel coding from the signal that wireless terminal receives;
Transmit by power line through power line modulation and power line channel encoded signals described;
Described signal through power line transmission is carried out power line separate the decoding of mediation power line channel;
The signal of described process power line being separated the decoding of mediation power line channel sends to backbone network.
11, as wireless communications method as described in the claim 10, it is characterized in that, before the signal that will receive from wireless terminal carries out power line modulation and power line channel coding, also comprise: the described signal that receives from wireless terminal is carried out wireless channel decoding, wireless despreading and demodulation.
12, as wireless communications method as described in the claim 9, it is characterized in that, describedly will send to wireless terminal through after the power line transmission, specifically comprise from the signal that backbone network receives:
To carry out power line modulation and power line channel coding from the signal that backbone network receives;
Transmit by power line through power line modulation and power line channel encoded signals described;
Described signal through power line transmission is carried out power line separate the decoding of mediation power line channel;
The signal of described process power line being separated the decoding of mediation power line channel sends to wireless terminal.
13, as wireless communications method as described in the claim 12, it is characterized in that, separate and be in harmonious proportion after the power line channel decoding described signal being carried out power line, also comprise: described separating through power line is in harmonious proportion the signal of power line channel decoding and carries out wireless channel coding and multiplexing, wireless frequency expansion and modulation.
14, a kind of wireless access device is characterized in that, comprises wireless transmit/receive units and power line Transmit-Receive Unit;
Described wireless transmit/receive units, the signal that is used for receiving from wireless terminal send to described power line Transmit-Receive Unit after carrying out wireless channel decoding, wireless despreading and demodulation; After will carrying out wireless channel coding and multiplexing, wireless frequency expansion and modulation from the signal that described power line Transmit-Receive Unit receives, send to wireless terminal;
Described power line Transmit-Receive Unit, the signal that is used for receiving from described wireless transmit/receive units send to power line after carrying out power line modulation and power line channel coding; To carry out power line from the signal that power line receives and separate and be in harmonious proportion after the power line channel decoding, send to described wireless transmit/receive units.
15, as wireless access device as described in the claim 14, it is characterized in that also comprise the transmit diversity processing unit, described transmit diversity processing unit carries out the coding/decoding of distribution signal.
16, as wireless access device as described in the claim 14, it is characterized in that described wireless access device is powered by power line by power network.
17, a kind of signal processing apparatus is characterized in that, comprises power line processing unit and radio management unit;
Described power line processing unit, the signal that is used for receiving from power line carry out power line to be separated and is in harmonious proportion after the power line channel decoding, sends to described radio management unit; After will carrying out power line modulation and power line channel coding from the signal that described radio management unit receives, send to power line;
Described radio management unit, the signal that is used for receiving from described power line processing unit send to backbone network after carrying out the wire signal reconstruction; After will carrying out the radio management processing from the signal that backbone network receives, send to described power line processing unit.
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| CNA2007100905831A CN101287182A (en) | 2007-04-12 | 2007-04-12 | Wireless communication system, method and device |
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| CNA2007100905831A CN101287182A (en) | 2007-04-12 | 2007-04-12 | Wireless communication system, method and device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011035597A1 (en) * | 2009-09-23 | 2011-03-31 | 华为技术有限公司 | Method, device and system for establishing channel for wireless signal transmission |
| CN103051418A (en) * | 2012-12-10 | 2013-04-17 | 四川长虹电器股份有限公司 | Wireless communication and power line communication-based diversity transmission method |
| CN103297987A (en) * | 2013-06-05 | 2013-09-11 | 四川省韬光通信有限公司 | Power line transmission based mobile communication indoor microdistribution system |
| CN105308873A (en) * | 2014-02-24 | 2016-02-03 | 华为技术有限公司 | Node, resource multiplexing method and system |
| CN106162945A (en) * | 2015-04-10 | 2016-11-23 | 中国电信股份有限公司 | Honeycomb base station device and data transmission method, communication equipment and communication system |
| CN106162946A (en) * | 2015-04-10 | 2016-11-23 | 中国电信股份有限公司 | Cellular communication system and data transmission method, equipment and communication system |
-
2007
- 2007-04-12 CN CNA2007100905831A patent/CN101287182A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011035597A1 (en) * | 2009-09-23 | 2011-03-31 | 华为技术有限公司 | Method, device and system for establishing channel for wireless signal transmission |
| CN102025408A (en) * | 2009-09-23 | 2011-04-20 | 华为技术有限公司 | Method, device and system for establishing channel for transmitting wireless signals |
| CN103051418A (en) * | 2012-12-10 | 2013-04-17 | 四川长虹电器股份有限公司 | Wireless communication and power line communication-based diversity transmission method |
| CN103297987A (en) * | 2013-06-05 | 2013-09-11 | 四川省韬光通信有限公司 | Power line transmission based mobile communication indoor microdistribution system |
| CN103297987B (en) * | 2013-06-05 | 2016-04-20 | 四川省韬光通信有限公司 | Based on the mobile communication indoor differential distribution system of power line transmission |
| CN105308873A (en) * | 2014-02-24 | 2016-02-03 | 华为技术有限公司 | Node, resource multiplexing method and system |
| CN105308873B (en) * | 2014-02-24 | 2017-08-04 | 华为技术有限公司 | node, resource multiplexing method and system |
| CN106162945A (en) * | 2015-04-10 | 2016-11-23 | 中国电信股份有限公司 | Honeycomb base station device and data transmission method, communication equipment and communication system |
| CN106162946A (en) * | 2015-04-10 | 2016-11-23 | 中国电信股份有限公司 | Cellular communication system and data transmission method, equipment and communication system |
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