CN102572704A - Layered heterogeneous multimedia broadcast multicast service transmission system - Google Patents
Layered heterogeneous multimedia broadcast multicast service transmission system Download PDFInfo
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- CN102572704A CN102572704A CN2010106017417A CN201010601741A CN102572704A CN 102572704 A CN102572704 A CN 102572704A CN 2010106017417 A CN2010106017417 A CN 2010106017417A CN 201010601741 A CN201010601741 A CN 201010601741A CN 102572704 A CN102572704 A CN 102572704A
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Abstract
The invention relates to a layered heterogeneous multimedia broadcast multicast service (MBMS) transmission system, which comprises an emitting subsystem and a receiving subsystem, wherein the emitting subsystem comprises a joint encoder for performing joint encoding on data layers to be emitted, a layer mapping module for respectively mapping code streams subjected to joint encoding to a wireless wide area network (WWAN) MBMS layer and a wireless local area network (WLAN) MBMS layer, a WWAN MBMS emitter and a WLAN MBMS emitter; and the receiving subsystem comprises a WWAN MBMS receiver, a WLAN MBMS receiver, a layer combination module for combining the received MBMS layers and recovering the code streams and a joint decoder for performing joint decoding on the code streams. A layered MBMS transmission technology is provided between a WWAN system and a WLAN system, so that multi-layer MBMS transmission can be realized by using the characteristics that the WWAN system and the WLAN system perform transmission by adopting different frequencies; and layer adaptive MBMS transmission is realized inside and outside a WLAN coverage region.
Description
Technical field
The present invention relates to the heterogeneous hierarchical wireless communication system, relate in particular to a kind of heterogeneous hierarchical broadcast multi-broadcasting transmission system.
Background technology
Modern wireless communication systems can realize broadcast multi-broadcasting (MBMS) system through the merging of multi-cell channel, and is professional so that MBMS to be provided to mobile communication subscriber.In MIMO MBMS system, the channel condition that also can constitute according to a plurality of antennas of each MBMS base station carries out adaptive MIMO MBMS operation, promptly in the time can only transmitting a MIMO layer, only basic MBMS data flow is carried out many sub-districts and merges; In the time can transmitting a plurality of MIMO layer, to basic MBMS data flow with strengthen the MBMS data flow and carry out many sub-districts and merge.
Cell mobile communication systems (like the WWAN system) has the wide characteristics that cover, and can for the terminal MBMS be provided transmission in any place.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 data Layer different with cellular system transmissions.
Therefore can obtain higher MBMS data transfer rate through a plurality of MBMS data flow are merged in the WLAN coverage territory.
Summary of the invention
To defective that exists in the prior art and deficiency, the present invention expands to many sub-districts merging of multilayer MBMS data flow between the heterogeneous system.
To achieve these goals, the present invention proposes a kind of heterogeneous hierarchical broadcast multi-broadcasting 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 MBMS layer and WLAN MBMS layer respectively;
WWAN MBMS transmitter and WLAN MBMS transmitter are respectively applied for emission WWAN MBMS layer and WLAN MBMS layer;
Said receiving subsystem comprises:
WWAN MBMS receiver and WLAN MBMS receiver, the MBMS layer that is respectively applied for receiving carries out channel estimating and detection;
Layer merges module, is used for the MBMS layer that WWAN MBMS receiver and WLAN MBMS 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 MBMS encoding stream and strengthen the MBMS encoding stream, wherein, said basic MBMS encoding stream can independently be decoded.
As technique scheme preferred, said layer mapping block is used for said basic MBMS encoding stream is mapped to WWAN MBMS layer, and said enhancing MBMS encoding stream is mapped to the WLANMBMS layer.
As technique scheme preferred, said layer merges module and is used for the MBMS layer that WWAN MBMS receiver and WLAN MBMS receiver receive is merged, and recovers basic MBMS encoding stream and enhancing MBMS encoding stream, or only recovers basic MBMS encoding stream.
As technique scheme preferred, said layer merges module and is used for whether merging WWAN MBMS layer and WLANMBMS layer according to the channel estimation results decision of said WLANMBMS receiver.
The present invention provides a kind of layering MBMS transmission technology between cellular mobile communication (WWAN) system and short-distance wireless communication (WLAN) system; Can utilize wlan system and WWAN system to adopt the characteristics of different frequency transmission; Realize multilayer (layer) MBMS transmission, and in the WLAN coverage territory, transmit with the overseas realization layer self-adapting of WLAN coverage MBMS.
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 broadcast multi-broadcasting transmission system of the present invention's proposition;
Fig. 2 is the receiving subsystem sketch map of the heterogeneous hierarchical broadcast multi-broadcasting 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 broadcast multi-broadcasting transmission system of the present invention's proposition.
Embodiment
Like Fig. 1, shown in 2, a kind of heterogeneous hierarchical broadcast multi-broadcasting 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 MBMS transmitter and WLAN MBMS transmitter are launched;
Layer mapping block is used for the encoding stream behind the combined coding is mapped to WWAN MBMS layer and WLAN MBMS layer respectively;
WWAN MBMS transmitter and WLAN MBMS transmitter are respectively applied for emission WWAN MBMS layer and WLAN MBMS layer;
Said receiving subsystem comprises:
WWAN MBMS receiver and WLAN MBMS receiver, the MBMS layer that is respectively applied for receiving carries out channel estimating and detection;
Layer merges module, is used for the MBMS layer that WWAN MBMS receiver and WLAN MBMS 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 MBMS encoding stream and enhancing MBMS encoding stream, and wherein, said basic MBMS encoding stream can independently be decoded.Can bring for example higher quality and strengthen the MBMS encoding stream.Layer mapping block is mapped to WWAN MBMS layer with said basic MBMS encoding stream, in the transmission of WWAN MBMS transmitter, said enhancing MBMS encoding stream is mapped to WLAN MBMS layer, transmits at WLAN MBMS transmitter.
Layer merges module and is used for the MBMS layer that WWAN MBMS receiver and WLAN MBMS receiver receive is merged, and recovers basic MBMS encoding stream and enhancing MBMS encoding stream, or only recovers basic MBMS encoding stream.Joint decoder is to basic MBMS encoding stream and enhancing MBMS encoding stream, or basic MBMS encoding stream carries out combined decoding.
As shown in Figure 3, layer merges module and is used for whether merging WWAN MBMS layer and WLAN MBMS layer according to the channel estimation results decision of said WLAN MBMS 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. export basic MBMS encoding stream and strengthen the MBMS encoding stream to joint decoder;
4., then only the WWANMBMS layer is merged if the judgement of layer merging module can't receive WLAN MBMS layer;
5. export basic MBMS encoding stream to joint decoder.
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 broadcast multi-broadcasting 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 MBMS layer and WLAN MBMS layer respectively;
WWAN MBMS transmitter and WLAN MBMS transmitter are respectively applied for emission WWAN MBMS layer and WLAN MBMS layer data;
Said receiving subsystem comprises:
WWAN MBMS receiver and WLAN MBMS receiver are respectively applied for the MBMS layer that receives are carried out channel estimating, the merging of many sub-districts and detection;
Layer merges module, is used for the MBMS layer that WWAN MBMS receiver and WLAN MBMS receiver receive is merged the recovery encoding stream;
Joint decoder is used for said encoding stream is carried out combined decoding.
2. heterogeneous hierarchical broadcast multi-broadcasting transmission system according to claim 1; It is characterized in that; The digital coding that said combined coding device is used for sending is basic MBMS encoding stream and enhancing MBMS encoding stream, and wherein, said basic MBMS encoding stream can independently be decoded.
3. heterogeneous hierarchical broadcast multi-broadcasting transmission system according to claim 2 is characterized in that, said layer mapping block is used for said basic MBMS encoding stream is mapped to WWAN MBMS layer, and said enhancing MBMS encoding stream is mapped to WLAN MBMS layer.
4. heterogeneous hierarchical broadcast multi-broadcasting transmission system according to claim 3; It is characterized in that; Said layer merges module and is used for the MBMS layer that WWAN MBMS receiver and WLAN MBMS receiver receive is merged; Recover basic MBMS encoding stream and strengthen the MBMS encoding stream, or only recover basic MBMS encoding stream.
5. heterogeneous hierarchical broadcast multi-broadcasting transmission system according to claim 4 is characterized in that, said layer merges module and is used for whether merging WWAN MBMS layer and WLAN MBMS layer according to the channel estimation results decision of said WLAN MBMS receiver.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010106017417A CN102572704A (en) | 2010-12-22 | 2010-12-22 | Layered heterogeneous multimedia broadcast multicast service transmission system |
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| CN2010106017417A CN102572704A (en) | 2010-12-22 | 2010-12-22 | Layered heterogeneous multimedia broadcast multicast service transmission system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050129018A1 (en) * | 2003-10-14 | 2005-06-16 | Lorenzo Casaccia | Scalable encoding for multicast broadcast multimedia service |
| 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
- 2010-12-22 CN CN2010106017417A patent/CN102572704A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050129018A1 (en) * | 2003-10-14 | 2005-06-16 | Lorenzo Casaccia | Scalable encoding for multicast broadcast multimedia service |
| 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 |