CN102571260A - Layered heterogeneous multi-antenna transmission system - Google Patents
Layered heterogeneous multi-antenna transmission system Download PDFInfo
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- CN102571260A CN102571260A CN2010106011834A CN201010601183A CN102571260A CN 102571260 A CN102571260 A CN 102571260A CN 2010106011834 A CN2010106011834 A CN 2010106011834A CN 201010601183 A CN201010601183 A CN 201010601183A CN 102571260 A CN102571260 A CN 102571260A
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Abstract
The invention relates to a layered heterogeneous multi-antenna transmission system comprising a transmitting subsystem and a receiving subsystem, wherein the transmitting subsystem comprises a joint encoder, a layer mapping module, a WWAN (Wireless Wide Area Network) MIMO (Multiple Input Multiple Output) transmitter and a WLAN (Wireless Local Area Network) MIMO transmitter, wherein the joint encoder is used for jointly encoding data layers to be transmitted, and the layer mapping module is used for mapping a jointly encoded stream to a WWAN MIMO layer and a WLAN MINO layer, respectively; and the receiving subsystem comprises a WWAN MIMO receiver, a WLAN MINO receiver, a layer merge module and a joint decoder, wherein the layer merge module is used for merging the received MIMO layers and restoring the encoded stream, and the joint decoder is used for jointly decoding the encoded stream. According to the layered heterogeneous multi-antenna transmission system, a multi-layer self-adaption MIMO transmission technology is expanded between heterogeneous systems; multi-layer MIMO transmission is realized by using the characteristics that a WLAN system and a WWAN system are transmitted by different frequencies; and the self-adaption MIMO transmission is realized inside and outside WLAN coverage areas.
Description
Technical field
The present invention relates to the heterogeneous hierarchical wireless communication system, relate in particular to a kind of heterogeneous hierarchical multi-aerial transmission system.
Background technology
The widely-used multi-antenna transmitting transferring technology of modern wireless communication systems (MIMO technology) is to obtain better link performance and power system capacity.The MIMO technology can be divided into send to divide collection (Transmit Diversity, TD) and space division multiplexing (Spatial Multiplexing, SM).The TD technology adopts data Layers of a plurality of antenna transmission (layer), to obtain diversity gain.The SM technology adopts a plurality of layer of a plurality of antenna transmission, and a plurality of data flow of parallel transmission are to obtain spatial multiplexing gain.The SM technology can only be used for the low and higher channel condition of SINR of correlation between antenna owing to there is the interference between the layer.Therefore current adaptive MIMO technology can be switched between SM and TD pattern according to the variation of channel condition flexibly.In traditional M IMO system, the main channel condition that constitutes according to a plurality of antennas of a base station of this self adaptation operation is implemented.In distributing antenna system, the channel condition that also can constitute according to a plurality of antennas of adjacent several base stations carries out the adaptive MIMO operation.
Cell mobile communication systems (like the WWAN system) has the wide characteristics that cover; Can for the terminal MIMO be provided transmission in any place; But according to the channel condition of the many antennas of cellular basestation, can realize the SM transmission of many Layer sometimes, can only realize the TD transmission of single Layer sometimes.Short range communication systems (like wlan system) can only cover the minority focus, but because it works in different frequency ranges with cellular system, always can the layer different with cellular system transmissions.
Therefore what can make up that a cellular system (being called for short the WWAN system) and wlan system form is divided into isomery multi-aerial transmission system, the higher data transfer rate of acquisition in the WLAN coverage territory.
Summary of the invention
To defective that exists in the prior art and deficiency, the present invention expands to the adaptive MIMO transmission technology of many layer between the heterogeneous system.
To achieve these goals, the present invention proposes a kind of heterogeneous hierarchical multi-aerial transmission system, comprises emission subsystem and receiving subsystem; Wherein, said emission subsystem comprises:
The combined coding device, the data Layer that is used for launching carries out combined coding;
Layer mapping block is used for the encoding stream behind the combined coding is mapped to WWAN MIMO layer and WLAN MIMO layer respectively;
WWAN MIMO transmitter and WLAN MIMO transmitter are respectively applied for emission WWANMIMO layer and WLAN MIMO layer;
Said receiving subsystem comprises:
WWAN MIMO receiver and WLAN MIMO receiver, the MIMO layer that is respectively applied for receiving carries out channel estimating and detection;
Layer merges module, is used for the MIMO layer that WWAN MIMO receiver and WLAN MIMO receiver receive is merged the recovery encoding stream;
Joint decoder is used for said encoding stream is carried out combined decoding.
As technique scheme preferred, the digital coding that said combined coding device is used for sending is basic coding stream and enhance encoding stream, wherein, said basic coding flows and can independently decode.
As technique scheme preferred, said layer mapping block is used for said basic coding stream is mapped to WWAN MIMO layer, and said enhance encoding stream is mapped to WLAN MIMO layer.
As technique scheme preferred, said layer merges module and is used for the MIMO layer that WWAN MIMO receiver and WLAN MIMO receiver receive is merged, and recovers basic coding stream and flows with enhance encoding, or only recover basic coding and flow.
As technique scheme preferred, said layer merges module and is used for whether merging WWAN MIMO layer and WLANMIMO layer according to the channel estimation results decision of said WLANMIMO receiver.
The present invention expands to the adaptive MIMO transmission technology of many layer between the heterogeneous system; Utilize wlan system and WWAN system to adopt the characteristics of different frequency transmission; Realized multilayer (layer) MIMO transmission, and in the WLAN coverage territory, transmitted with the overseas realization layer self-adapting of WLAN coverage MIMO.
Below in conjunction with accompanying drawing, specific embodiments of the invention is done further to specify.For the person of ordinary skill in the field, from detailed description of the invention, above-mentioned and other purposes of the present invention, feature and advantage will be obvious.
Description of drawings
Fig. 1 is the emission subsystem sketch map of the heterogeneous hierarchical multi-aerial transmission system of the present invention's proposition;
Fig. 2 is the receiving subsystem sketch map of the heterogeneous hierarchical multi-aerial transmission system of the present invention's proposition;
Fig. 3 merges the layer merging process sketch map of module for the layer in the receiving subsystem in the heterogeneous hierarchical multi-aerial transmission system of the present invention's proposition.
Embodiment
Like Fig. 1, shown in 2, a kind of heterogeneous hierarchical multi-aerial transmission system that the present invention proposes comprises emission subsystem and receiving subsystem; Wherein, said emission subsystem comprises:
The combined coding device is used for and will carries out combined coding at the layer that WWAN MIMO transmitter and WLAN MIMO transmitter are launched;
Layer mapping block is used for the encoding stream behind the combined coding is mapped to WWAN MIMO layer and WLAN MIMO layer respectively;
WWAN MIMO transmitter and WLAN MIMO transmitter are respectively applied for emission WWANMIMO layer and WLAN MIMO layer;
Said receiving subsystem comprises:
WWAN MIMO receiver and WLAN MIMO receiver, the MIMO layer that is respectively applied for receiving carries out channel estimating and detection;
Layer merges module, is used for the MIMO layer that WWAN MIMO receiver and WLAN MIMO receiver receive is merged the recovery encoding stream;
Joint decoder is used for said encoding stream is carried out combined decoding.
Wherein, when preferred, the digital coding that said combined coding device will send is basic coding stream and enhance encoding stream, and wherein, said basic coding stream can independently be decoded, and enhance encoding stream can bring for example higher quality.Layer mapping block is mapped to WWAN MIMO layer with said basic coding stream, in the transmission of WWAN MIMO transmitter, said enhance encoding stream is mapped to WLAN MIMO layer, transmits at WLAN MIMO transmitter.
Layer merges module and is used for the MIMO layer that WWAN MIMO receiver and WLAN MIMO receiver receive is merged, and recovers basic coding stream and flows with enhance encoding, or only recover basic coding and flow.Joint decoder is to basic coding stream and enhance encoding stream, or basic coding stream carries out combined decoding.
As shown in Figure 3, layer merges module and is used for whether merging WWAN MIMO layer and WLAN MIMO layer according to the channel estimation results decision of said WLAN MIMO receiver.
1.WLAN receiver is sent to layer merging module with the channel estimation results of WLAN signal;
2., then WLAN layer and WWAN layer are merged if the judgement of layer merging module can receive the WLAN layer;
3. to joint decoder output basic coding stream and enhance encoding stream;
4., then only the WWAN layer is merged if the judgement of layer merging module can't receive the WLAN layer;
5. to joint decoder output basic coding stream.
Though; The present invention clearly demonstrates through above embodiment and accompanying drawing thereof; Yet under the situation that does not deviate from spirit of the present invention and essence thereof; The person of ordinary skill in the field works as can make various corresponding variations and correction according to the present invention, but these corresponding variations and correction all should belong to the protection range of claim of the present invention.
Claims (5)
1. a heterogeneous hierarchical multi-aerial transmission system is characterized in that, comprises emission subsystem and receiving subsystem; Wherein, said emission subsystem comprises:
The combined coding device, the data Layer that is used for launching carries out combined coding;
Layer mapping block is used for the encoding stream behind the combined coding is mapped to WWAN MIMO layer and WLAN MIMO layer respectively;
WWAN MIMO transmitter and WLAN MIMO transmitter are respectively applied for emission WWANMIMO layer and WLAN MIMO layer data;
Said receiving subsystem comprises:
WWAN MIMO receiver and WLAN MIMO receiver, the MIMO layer that is respectively applied for receiving carries out channel estimating and detection;
Layer merges module, is used for the MIMO layer that WWAN MIMO receiver and WLAN MIMO receiver receive is merged the recovery encoding stream;
Joint decoder is used for said encoding stream is carried out combined decoding.
2. heterogeneous hierarchical multi-aerial transmission system according to claim 1 is characterized in that, the digital coding that said combined coding device is used for sending is basic coding stream and enhance encoding stream, and wherein, said basic coding stream can independently be decoded.
3. heterogeneous hierarchical multi-aerial transmission system according to claim 2 is characterized in that, said layer mapping block is used for said basic coding stream is mapped to WWAN MIMO layer, and said enhance encoding stream is mapped to WLAN MIMO layer.
4. heterogeneous hierarchical multi-aerial transmission system according to claim 3; It is characterized in that; Said layer merges module and is used for the MIMO layer that WWAN MIMO receiver and WLAN MIMO receiver receive is merged, and recovers basic coding stream and flows with enhance encoding, or only recover basic coding and flow.
5. heterogeneous hierarchical multi-aerial transmission system according to claim 4 is characterized in that, said layer merges module and is used for whether merging WWAN MIMO layer and WLAN MIMO layer according to the channel estimation results decision of said WLAN MIMO receiver.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050068918A1 (en) * | 2003-09-25 | 2005-03-31 | Ashok Mantravadi | Hierarchical coding with multiple antennas in a wireless communication system |
| WO2006048842A1 (en) * | 2004-11-05 | 2006-05-11 | Koninklijke Philips Electronics N.V. | System and method for transmitting layered video over qos enabled wlans |
| CN101207841A (en) * | 2006-12-19 | 2008-06-25 | 华为技术有限公司 | Method, system and apparatus for implementing multimedia broadcast multi-broadcast business |
| CN101512935A (en) * | 2006-07-27 | 2009-08-19 | 艾利森电话股份有限公司 | Layered broadcast transmission through multiple transmitters |
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- 2010-12-22 CN CN2010106011834A patent/CN102571260A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050068918A1 (en) * | 2003-09-25 | 2005-03-31 | Ashok Mantravadi | Hierarchical coding with multiple antennas in a wireless communication system |
| WO2006048842A1 (en) * | 2004-11-05 | 2006-05-11 | Koninklijke Philips Electronics N.V. | System and method for transmitting layered video over qos enabled wlans |
| CN101512935A (en) * | 2006-07-27 | 2009-08-19 | 艾利森电话股份有限公司 | Layered broadcast transmission through multiple transmitters |
| CN101207841A (en) * | 2006-12-19 | 2008-06-25 | 华为技术有限公司 | Method, system and apparatus for implementing multimedia broadcast multi-broadcast business |
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Owner name: ZHANXUN COMMUNICATION (SHANGHAI) CO. LTD. Effective date: 20141015 |
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Effective date of registration: 20141015 Address after: 100083 B, 52 Garden North Road, Beijing, Haidian District Applicant after: Research Institute of Telecommunications Transmission, Ministry of Industry and Information Technology Applicant after: Zhanxun Communication (Shanghai) Co., Ltd. Address before: 100083 B, 52 Garden North Road, Beijing, Haidian District Applicant before: Research Institute of Telecommunications Transmission, Ministry of Industry and Information Technology |
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Application publication date: 20120711 |