CN1326413C - Communication system for providing universal wireless packet service - Google Patents
Communication system for providing universal wireless packet service Download PDFInfo
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- CN1326413C CN1326413C CNB2004100538947A CN200410053894A CN1326413C CN 1326413 C CN1326413 C CN 1326413C CN B2004100538947 A CNB2004100538947 A CN B2004100538947A CN 200410053894 A CN200410053894 A CN 200410053894A CN 1326413 C CN1326413 C CN 1326413C
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- 238000010586 diagram Methods 0.000 description 10
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Abstract
The present invention discloses a radio communication system for providing general radio packet services, and comprises a sending and receiving platform of a base station, a base station controller and GPRS support nodes, wherein the sending and receiving platform of the base station is used for receiving data from a user terminal via an air interface; the base station controller is used for controlling the sending and receiving platform of the base station via an Abis interface; the GPRS support nodes are used for receiving and sending data in the method of packet switching. The present invention is characterized in that the radio communication system also comprises a data package controlling unit which is connected with an interface unit of the base station of the base station controller via a Gabis interface and is connected with the GPRS support nodes via Gb interfaces, and packet data are switched between the base station controller and the GPRS support node on the basis of a frame relay.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to the communication system that is used to provide GPRS (GPRS).
Background technology
For GPRS is provided, in traditional gsm system, need to provide packet control unit (PCU).How in communication system, to dispose PCU, to the operation and the very big influence of maintenance generation of system.
In 3 GPP TS, 23.060 V3.15.0, disclose several structures that are used to transmit GPRS, but this standard does not define the particular location of PCU in communication system.There is different solutions in different production firms, PCU can be placed on different positions.The diverse location of PCU in communication system will produce different influences with safeguarding to the operation of system.
Referring to Figure 1A to Fig. 1 D, show the situation of in gsm system, PCU being placed.
In the gsm system shown in Fig. 1 D, all Traffic Channels are being managed in the chnnel coding unit (CCU) in the base transceiver station (BTS) at Figure 1A, and the voice-and-data bag all transmits in the Traffic Channel of its control.Base station controller (BSC) connects core net and BTS, is responsible for the exchange of Traffic Channel.GPRS Support Node (GSN) then is the service node of packet exchange in the core net.Each PCU manages its all CCU data packet loaded of being responsible for, and packet is changed and transmitted between the frame relay coding on coding of the RLC/MAC on wave point and the Abis interface and the Gb Interface.In general, RLC/MAC coding is lower to bandwidth utilization, the multiplexing bandwidth that frame relay then can more efficient.
Figure 1A is a schematic diagram, shows the wireless communication system that PCU is positioned at the BTS side.In this case, when gsm system is upgraded to gprs system, need all BTS of visit.Owing to there is a large amount of BTS, the field engineering amount of system upgrade is very big for system operator, and upgrade cost is higher.
Figure 1B is a schematic diagram, shows the wireless communication system that PCU is positioned at the BSC side.Wherein PCU is total to the location with BSC physically, and the transmission between PCU and the BSC is easy to realize.But,,, need extra disposal ability and other memory space for existing BSC in order to support the PCU function.In addition, for from gprs system to the EDGE phylogeny, the data volume on the Abis interface will increase greatly, and PCU is arranged among the present BSC, the port number of the Abis circuit of existing BSC might be not enough.Have only the capacity of sacrificing voice channel could increase the capacity of data packet transmission like this.
Fig. 1 C is a schematic diagram, shows the wireless communication system that PCU is positioned at the GSN side.Just PCU is placed on GSN one side, its physically with the same location of GSN.Can realize the shared same PCU of a plurality of BSC, but each BSC will increase to the transmission cost between the PCU, only be applicable to the system that the BSC capacity is less, and PCU requires to have bigger capacity and disposal ability.With respect to Gb, the communication system shown in Fig. 1 C need be used the RLC/MAC agreement between BSC and GSN, consume more transfer resource.In addition, because GSN is common and the BSC wide apart, therefore, the increase of transfer resource will greatly increase the operation cost of system, and this is that system operator is undesirable.In addition, after the EDGE phylogeny, if PCU is arranged on the GSN side, the connectivity port of the Abis circuit of existing BSC also might be not enough to the bandwidth that provides enough from gprs system, has only the capacity of sacrificing voice channel could increase the capacity of data packet transmission.
Fig. 1 D is a schematic diagram, shows the wireless communication system that PCU is provided with away from BSC.Because the efficient of transmitting RLC/mac frame is lower than the Gb efficiency of transmission between BSC and PCU, system similarity shown in this system and Fig. 1 C, because need more transfer resource than the system shown in Figure 1A and Figure 1B, this will greatly increase the operation cost of system, this is that system operator is undesirable.In addition, after the EDGE phylogeny, as Fig. 1 D PCU is set from gprs system, also there is deficiency in the connectivity port of the Abis circuit of existing BSC, has only the capacity of sacrificing voice channel could increase the capacity of data packet transmission.
Therefore, need a kind of wireless communication system, can address the above problem and deficiency, processing capacity and Abis port number at existing BSC exist under the circumscribed situation, do not influence the voice channel capacity of existing BSC, realize the transmission of Large Volume Data bag, and reduce the operation expenditure of operator.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of wireless communication system of novelty, thereby solve said system designer and problem that system operator ran into.
According to the present invention, a kind of wireless communication system that is used to provide GPRS is provided, comprising: base transceiver station is used for receiving data by air interface from user side; Base station controller is used for by Abis interface control base transceiver station; GPRS Support Node is used for the mode with packet switching, receives and send data; It is characterized in that, this wireless communication system also comprises: the packet control unit, link to each other with base station controller by the Gabis interface, and link to each other with GPRS Support Node by Gb Interface, between base station controller and GPRS Support Node, carry out the exchange of grouped data based on frame relay, wherein base station controller comprises Base station Interface Unit, link to each other with base transceiver station by Abis interface, and link to each other with the packet control unit by the Gabis interface, be used for data are sent to the Gabis interface from Abis interface, and be sent to GPRS Support Node.
Preferably, according to the wireless communication system that is used to provide GPRS of the present invention, wireless communication system also comprises Mobile Servicing Center, links to each other with base station controller by the A interface, is used for and the base station controller swap data.
Preferably, according to the wireless communication system that is used to provide GPRS of the present invention, described Base station Interface Unit converges the data packet channel in the Abis interface of all base station controllers, sends it to packet control unit by the Gabis interface pellucidly.
Preferably, according to the wireless communication system that is used to provide GPRS of the present invention, GPRS Support Node is a serving GPRS support node.
Preferably, according to the wireless communication system that is used to provide GPRS of the present invention, GPRS Support Node is a gateway support node.
The description of execution mode and accompanying drawing by the back, it is clearer that the other objects and features of the invention will become.
Description of drawings
Quote and the accompanying drawing of forming a specification part illustrates embodiments of the present invention at this, and be used to explain principle of the present invention in conjunction with declaratives.
Figure 1A is a schematic diagram, shows the wireless communication system that PCU is positioned at the BTS side;
Figure 1B is a schematic diagram, shows the wireless communication system that PCU is positioned at the BSC side;
Fig. 1 C is a schematic diagram, shows the wireless communication system that PCU is positioned at the GSN side;
Fig. 1 D is a schematic diagram, shows the wireless communication system that PCU is provided with away from B SC; And
Fig. 2 is a schematic diagram, shows according to wireless communication system of the present invention.
Embodiment
Fig. 2 is a schematic diagram, shows according to wireless communication system of the present invention.
Referring to Fig. 2, wireless communication system 200 according to the present invention comprises BTS 201, BSC202, MSC 203 and GSN 204.Wherein, BTS 201 passes through air interface (Um) from user terminal (not shown) transceive data.BTS 201 also comprises chnnel coding unit (CCU) 2011, is used for carrying out data transaction and transmission between the interface (Um) and Abis interface aloft.BTS 201 links to each other with BTS interface unit (BIU) 2021 among the BSC 202 by Abis interface, thereby is implemented in exchanges data between BTS 201 and the BSC 202, i.e. the control of 202 couples of BTS 201 of BSC.
In addition, by the A interface, BSC 202 will send MSC 203 to from the data that BTS 201 receives.Equally, MSC 203 can send data wherein to BSC 202 by the A interface, in order to further handling.
Referring to Fig. 2, wireless communication system 200 according to the present invention also comprises an independently PCU 205.This PCU neither is arranged in BTS 201, and also not in BSC 202 or GSN 204, as a separate equipment, the major function of this PCU 205 is between BSC 202 and GSN 204, carries out the exchange of grouped data based on frame relay.
According to PCU 205 of the present invention, at first link to each other with BIU 2021 among the BSC 202 by Gabis interface, receive upstream data, and, pass through Gb Interface received data from BSC 202, be sent to GSN 204.For the downlink data that receives from GSN 204, after PCU 205 handles,, be sent to BTS 201 behind the transparent process BIU 2021 through the Gabis interface.In the present invention, the Gabis interface is a kind of interface that is used for transmits data packets, and its physical layer is the same with Abis interface, all according to the E1 standard, have two kinds in channel transmitted on it: the packet of RLC/MAC form, and the control information between B SC 202 and the PCU 205.
For Gabis interface of the present invention, it is used for transmitting RLC/mac frame between B SC 202 and PCU 205.BIU 2021 will converge the data packet channel in the Abis interface of all these BSC, send it to PCU 205 pellucidly on the Gabis interface.Data packet channel in the Abis interface of all these BSC can not enter exchange and other parts of BSC 202.
In the present invention, also comprise the Gb Interface that connects PCU 205 and GSN 204, be used between PCU 205 and GSN 204, in the mode of packet switching, exchange signalling information and user data.
For GSN 204, have two types, can be serving GPRS support node (SGSN) or gateway support node (GGSN).Wherein, SGSN is used for the EDGE and the GPRS mobile phone of supervising the network, is responsible for their transfer of data, mobile management, record location information of terminals etc.GGSN is used to provide mobile network and extraneous interface, and is responsible for all and outer net relevant data flow based charging etc.
According to wireless communication system of the present invention, owing to do not need PCU 205 is arranged on BTS201, BSC 202 or GSN 204 sides, and the PCU 205 that is provided with separately links to each other with BSC 202 by the Gabis interface, thereby do not need existing BSC that extra disposal ability is provided, and, guaranteed the capacity of the voice channel of existing BSC owing to there is not the transmission of Packet Service among the BSC.In addition, use Gb Interface, can reduce the cost expenditure of system operator the biglyyest as the teledata interface.
Do not depart from the scope of the present invention and conceive, can make many other changes and distortion.Should be appreciated that and the invention is not restricted to specific execution mode.Scope of the present invention is defined by the following claims.
Claims (5)
1. wireless communication system that is used to provide GPRS comprises:
Base transceiver station (201) is used for receiving data by air interface from user side;
Base station controller (202) is used for controlling described base transceiver station (201) by Abis interface;
GPRS Support Node (204) is used for the mode with packet switching, receives and send data;
It is characterized in that this wireless communication system also comprises:
Packet control unit (205), link to each other with base station controller (202) by the Gabis interface, and link to each other with GPRS Support Node (204) by Gb Interface, between base station controller (202) and GPRS Support Node (204), carry out the exchange of grouped data based on frame relay, wherein said base station controller (202) comprises Base station Interface Unit (2021), link to each other with described base transceiver station (201) by Abis interface, and link to each other with described packet control unit (205) by the Gabis interface, be used for data are sent to the Gabis interface from Abis interface, and be sent to GPRS Support Node (204).
2. wireless communication system according to claim 1 is characterized in that, described wireless communication system also comprises Mobile Servicing Center (203), links to each other with base station controller (202) by the A interface, is used for and described base station controller (202) swap data.
3. wireless communication system according to claim 1, it is characterized in that, described Base station Interface Unit (2021) converges the data packet channel in the Abis interface of all described base station controllers (202), sends it to described packet control unit (205) by the Gabis interface pellucidly.
4. according to each described wireless communication system of claim 1 to 3, it is characterized in that described GPRS Support Node (204) is a serving GPRS support node.
5. according to each described wireless communication system of claim 1 to 3, it is characterized in that described GPRS Support Node (204) is a gateway support node.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100538947A CN1326413C (en) | 2004-08-20 | 2004-08-20 | Communication system for providing universal wireless packet service |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100538947A CN1326413C (en) | 2004-08-20 | 2004-08-20 | Communication system for providing universal wireless packet service |
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| CN1738444A CN1738444A (en) | 2006-02-22 |
| CN1326413C true CN1326413C (en) | 2007-07-11 |
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| CNB2004100538947A Expired - Lifetime CN1326413C (en) | 2004-08-20 | 2004-08-20 | Communication system for providing universal wireless packet service |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101404808B (en) * | 2008-10-16 | 2010-06-02 | 中兴通讯股份有限公司 | A method for detecting whether a mobile phone user has EDGE function |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1323481A (en) * | 1998-10-16 | 2001-11-21 | 艾利森电话股份有限公司 | Increased cell packet switched traffic capacity |
| US20040013095A1 (en) * | 2002-07-22 | 2004-01-22 | Western Gary E. | Apparatus and methods for a coding scheme selection |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1323481A (en) * | 1998-10-16 | 2001-11-21 | 艾利森电话股份有限公司 | Increased cell packet switched traffic capacity |
| US20040013095A1 (en) * | 2002-07-22 | 2004-01-22 | Western Gary E. | Apparatus and methods for a coding scheme selection |
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