CN100414926C - Method and system for realizing packet data compression in CDMA network - Google Patents
Method and system for realizing packet data compression in CDMA network Download PDFInfo
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- CN100414926C CN100414926C CNB2004100793527A CN200410079352A CN100414926C CN 100414926 C CN100414926 C CN 100414926C CN B2004100793527 A CNB2004100793527 A CN B2004100793527A CN 200410079352 A CN200410079352 A CN 200410079352A CN 100414926 C CN100414926 C CN 100414926C
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Abstract
The present invention discloses a method and a system for realizing grouped data compression in CDMA networks, which comprises grouped control function nodes in the CDMA networks and grouped processing function nodes established among grouped data service nodes. When establishing grouped services, a mobile station and the grouped processing function nodes can be compressed for negotiation, the mobile station can compress and transfer grouped service data to the grouped processing function nodes, and the grouped processing function nodes can decompress and transfer the grouped service data to grouped switching networks. The system comprises the mobile station, a base transceiver station, a grouped control function node devices, a grouped data service node device and a grouped processing function node device, and the grouped processing function node device can realize compressing and decompressing the grouped service data. Under the condition that the existing network PDSN devices do not support compression, the present invention can realize compressing and transmitting the grouped service data on CDMA wireless access networks so as to increase the utilization ratio of radio resources.
Description
Technical field
The present invention relates to communication technical field, be specifically related to realize on a kind of CDMA network the method and system of grouped data compression.
Background technology
The third generation (3G) mobile communication can not only provide existing various mobile telephone service, and the broadband multimedia services of two-forty can also be provided, and supports high-quality speech, Packet data service and real-time video transmission.The New Times that started 3G radio communication and internet, multimedia merge, IS-95 is to the evolution of 3G, and promptly CDMA2000 uses wideband CDMA (code division multiple access) technology to adapt to the demand of IMT-2000.CDMA2000 provides from the seamlessly transitting of two generation IS-95 systems, and service provider can seamlessly progressively be set up the CDMA2000 network selectively in the zone that additional capacity and higher level service demand are arranged.CDMA2000 can provide follow-on capacity, data transfer rate and business.It comprises enhancing big bandwidth, high power capacity and with the air interface of IS-95 travelling carriage backward compatibility, introduce an efficient MAC layer model simultaneously and support two-forty (can reach 2Mbit/s), many voice and packet data concurrent services.
The network configuration of CDMA2000 system wherein, has following network element shown in 1:
MSC: mobile switching centre; BSC: base station controller;
BTS: base transceiver station; VLR: VLR Visitor Location Register;
HLR: attaching position register; AC: AUC;
EIR: equipment identity register; SDH: SDH (Synchronous Digital Hierarchy);
PCF: packet control unit; SSP: Service Switching Point;
HA: home agent; FA: Foreign Agent;
AAA: mandate, authentication and charging center; MIP: mobile IP
PDSN: packet data serving node; GMSC: mobile gateway switching center;
ISDN: integrated services digital network; PLMN: Public Land Mobile Nerwork;
PSTN: public telephone network; INTERNET: internet;
Each main Network Element Function is as follows:
1, BSC (base station controller): finish the control and the management of base station; Call out establishment of connection and dismounting; Mobile management; By soft/direct-cut operation, for upper-layer service provides reliable and stable wireless connections; Power control; RRM.
2, PCF (Packet Control Function): finish R-P establishment of connection, maintenance and management.Because the anxiety of Radio Resource so just need to discharge radio channel resource when the user does not have transmission, reception on wireless channel when, keeps but PPP connects continuation.By handoff functionality, upper-layer service is shielded wireless mobility.
3, BTS (base station): mainly finish the transmission-receiving function of wireless signal, realize the communication between wireless system and the travelling carriage.
4, MSC (mobile switching centre): MSC is the core network device in CDMA2000 lattice network territory, and it finishes mobile networks' such as exchange the core business processing capacity of signaling process, the speech business of signaling process, the RRM of travelling carriage mobile management.During the Mobile Origination data service, MSC is responsible for setting up, safeguards, removes Traffic Channel.
5, MS (travelling carriage): be mobile subscriber equipment, can initiate by air interface, receipt of call, finish with the communication between the base transceiver station.When request msg was professional, MS initiated, safeguards and deletes PPP and is connected.
6, PDSN (packet service node): be the gateway device between packet data network and the CDMA2000 mobile communication system.PDSN is exactly a router in essence, but compare function with the router in PDN (packet data network) network enhancing is arranged again: strengthened the ability of in the CDMA2000 mobile communications network, transmitting packet, be that PDSN can be forwarded to the PDN output packet travelling carriage in the CDMA2000 network, the data service of the Mobile Originated access PDN in the CDMA2000 network also must realize by PDSN.When simple IP inserted, PDSN was that travelling carriage distributes dynamic IP addressing.When mobile IP inserted, PDSN served as the FA (external agent) of HA (home agent).
7, HA (home agent): be distinctive network element device in the mobile IP service network, actual is exactly a router, but has increased the location information function of preserving the current place of travelling carriage on the basis of router feature again.The major function of HA comprises three aspects:
(1) basic route forwarding function;
(2) create and safeguard data transmission tunnel between HA and the FA, set up the MBR (mobility binding record) between home IP address and the related IP address;
(3) function of the current latest position information of preservation travelling carriage is similar to the HLR (attaching position register) in the mobile communication system.
8, AAA (Authorization, Authentication and Accounting, aaa server): the function of the aaa server in the CDMA2000 packet domain core network network and the function of the aaa server in the fixed data network are on all four, are mainly used in mobile data user's mandate, authentication and charging.
Interface between aaa server and the PDSN is the IP protocol interface of standard, and the consensus standard of following is RFC2138 and RFC2139.This interface is the standard interface between the fixed data network.
Wherein, PCF is connected with PDSN as wireless addressing network element, is used to transmit the message between wireless subsystem and the PDSN packet control unit.PDSN provides wireless network with the interface between the packet data network, finishes the exchange of mobile subscriber's Packet data service, and a PDSN can be connected with a plurality of PCF.
At present, the head compression can realize on PDSN in the cdma network, but reason owing to aspects such as technical capabilities, some PDSN can't support to compress or can't support and compress at the head of particular requirement on the existing network, make and on existing cdma network, carry out some business, such as TELNET business, video request program, the business that VoIP etc. are higher to bandwidth requirement usually causes quality of service too poor because of bandwidth problem.
Summary of the invention
The purpose of this invention is to provide the method and system that realize the grouped data compression on a kind of CDMA network, to solve under the situation that PDSN does not support to compress in existing cdma network, the excessive bandwidth of air-interface utilance of bringing of grouped data expense is crossed low problem, improves the utilance of wireless bandwidth.
For this reason, the invention provides following technical scheme:
Realize the method for grouped data compression on a kind of CDMA network, comprising:
A, between the group control of functional node of described CDMA network and group data service node, set up the packet-processing function node;
B, when setting up Packet Service, consult compression algorithm by travelling carriage and packet-processing function node;
C, described travelling carriage compress up described grouping busihess data and are sent to described packet-processing function node;
D, by described packet-processing function node described grouping busihess data is carried out decompress(ion) and contract and be sent to the packet switching network.
Described method also comprises:
After described packet-processing function node receives the grouping busihess data of described packet switching network transmission, described grouping busihess data is compressed and is sent to the travelling carriage of correspondence.
Described step C comprises:
C1, described travelling carriage are encapsulated as the network layer data bag with described grouping busihess data;
C2, compress packet header of described network layer data bag by described compression algorithm;
C3, the packet after will compressing are sent to described packet-processing function node.
Described step C1 is specially: described travelling carriage is encapsulated as the network layer data bag according to procotol/user datagram protocol/RTP with described grouping busihess data.
Described step C1 is specially: described travelling carriage is encapsulated as the network layer data bag according to transmission control protocol/procotol with described grouping busihess data.
Described compression algorithm comprises: standard-compression algorithm, privately owned compression algorithm.
Described step C3 comprises:
Packet after C31, described travelling carriage will compress is sent to described group control of functional node;
C32, the described group control of functional node packet after with described compression is sent to described packet-processing function node.
Described step D comprises:
D1, the described packet-processing function node described grouping busihess data that decompresses;
D2, the grouping busihess data after will decompressing are sent to described group data service node;
D3, the described group data service node grouping busihess data after with described decompression is sent to the described packet switching network.
Described packet switching network comprises: internet, Ethernet.
Realize the system of grouped data compression on a kind of CDMA network, comprising: travelling carriage, base transceiver station, group control of functional node equipment, group data service node equipment, wherein,
Described base transceiver station is used for the wireless signal of described travelling carriage is inserted wireless access network,
Described group control of functional node device coupled is used to realize the R-P connection management in described base transceiver station,
Described group data service node equipment is used to finish described mobile subscriber's Packet Service exchange,
Also comprise:
The packet-processing function node device is coupled in described group control of functional node equipment and described group data service node equipment respectively, is used for described Packet Service is carried out compression and decompression.
Described packet-processing function node device comprises:
The Packet Control Function interface module is coupled in described group control of functional node equipment, is used for the grouping busihess data with the mutual compression of described group control of functional node equipment;
The group data service node interface module is coupled in described group data service node equipment, is used for and the mutual grouping busihess data that decompresses of described group data service node equipment;
The compression/de-compression module is coupled in described Packet Control Function interface module and described group data service node interface module respectively, finishes the compression and decompression conversion of described grouping busihess data.
Described Packet Control Function interface module comprises:
The Packet Control Function data reception module is used to receive the data that described group control of functional node equipment sends;
The Packet Control Function data transmission blocks is used for to described group control of functional node equipment sending data.
Described group data service node interface module comprises:
The group data service node receiver module is used to receive the data that described group data service node equipment sends;
The group data service node sending module is used for to described group data service node equipment sending data.
By above technical scheme provided by the invention as can be seen, the present invention is by increasing the new equipment PPF (packet-processing function) with packet-processing function between PCF of cdma network (Packet Control Function) and PDSN, realize the compression transmission of grouping busihess data in wireless network, saved wireless bandwidth, improve utilization ratio of wireless resources, guaranteed the transmission quality of different business.In addition, adopt the A10/A11 interface protocol of standard, support FE/GE (Fast Ethernet/gigabit Ethernet) interface, can the PCF and the PDSN of existing network do not done change, can realize compression, do not influence the operation of existing network, saved system cost by making newly added equipment.
Description of drawings
Fig. 1 is the network configuration of CDMA2000 system;
Fig. 2 is the flow chart of the inventive method;
Fig. 3 is the signaling surface protocol stack architecture schematic diagram of PCF and PDSN;
Fig. 4 is the service surface protocol stack structure schematic diagram of PCF and PDSN;
Fig. 5 is the signaling surface protocol stack architecture schematic diagram of packet-processing function node newly-increased in the inventive method;
Fig. 6 be based on RFC2508 when compression head the packet-processing function node service surface protocol stack structure schematic diagram;
Fig. 7 is based on protocol stack structure shown in Figure 6 and realizes professional transmission course schematic diagram;
Fig. 8 be based on RFC1144 when compression head the packet-processing function node service surface protocol stack structure schematic diagram;
Fig. 9 is based on protocol stack structure shown in Figure 8 and realizes professional transmission course schematic diagram;
Figure 10 is the networking schematic diagram of system of the present invention;
Figure 11 is the structural representation of packet-processing function module in the system of the present invention.
Embodiment
The present technique field personnel know, in the CDMA2000 network, by PCF realize and PDSN (group data service node) between the R-P connection management, BSC (base station controller) realizes the management of Radio Resource and state etc.; PDSN/FA (Foreign Agent) realization is connected with packet data service network, has defined A10 (being used for bearer service) and A11 (being used for command transmitting) interface between PCF and PDSN.A10 and A11 interface have good opening.Since PPP (peer-peer protocol) connect be MS between PDSN, therefore compression generally realizes on PDSN.Because aspects such as intellectual property or technical capabilities, existing network PDSN does not support compression, and the situation of support sector's branch compression algorithm is also arranged but in fact.
Core of the present invention increases the new node with packet-processing function promptly on this basis between the PCF of cdma network and PDSN, make the equipment of this node support the A10/A11 interface protocol of standard, emulation PDSN realize and MS between compression negotiation.For the packed data that comes from MS (travelling carriage), carry out decompress(ion) and contract and send to PDSN according to the A10 interface requirement; For the data of coming from PDSN, compress and send to PCF according to the A10 interface requirement, send MS to by PCF.Thereby realize the compression transmission of grouping busihess data in wireless network.Compression to Packet Service can be the head compression, also can be content compression, certainly, also can be that head and content are all compressed.
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with drawings and embodiments.
With reference to Fig. 2, Fig. 2 is the flow chart of the inventive method, may further comprise the steps:
Before carrying out the grouping busihess data transmission, at first between the PCF of cdma system (Packet Control Function) node and PDSN (group data service node), set up packet-processing function node PPP.
When business is set up,, carry out compression negotiation with MS, to determine whether compression and compression zone and compression algorithm by packet-processing function node (PPF) emulation PDSN.
Process of transmitting for uplink service is as follows:
At first, in step 201: by MS grouping busihess data is compressed, compress mode can be selected arbitrarily according to actual needs.
Then, enter step 202: the grouping busihess data after the MS compression is sent to PCF.The same with other professional send modes, grouping busihess data after will being compressed by MS earlier is modulated to wireless signal, send it to BTS (base station) then, BTS carries out demodulation to it after receiving this wireless signal, and send the data-signal after the demodulation to BSC (base station controller), BSC finishes the control and the management of base station, has defined A8 (being used for bearer service) and A9 (being used for command transmitting) interface between BSC and PCF.In actual networking, BSC and PCF are from same manufacturer, and A8 and A9 interface are not open as yet, therefore, can send business datum to PCF by the privately owned A8 and the A9 interface of manufacturer.
In order to make the grouping busihess data after PDSN correctly discerns compression, so that being inserted corresponding grouped data, this business datum transmits in the net, earlier this grouping busihess data is decompressed with regard to needs, and then send PDSN to.
Therefore, enter step 203: send the grouping busihess data that compresses to the packet-processing function node by PCF.
After the packet-processing function node is received business datum,
Enter step 204: by packet-processing function node decompression grouping busihess data.Certainly, decompression algorithm is corresponding with the compression of MS, need be consensus in advance with MS.
Then, enter step 205: the grouping busihess data after will decompressing is sent to PDSN.Equally, set up communicating by letter of packet-processing function node and PDSN according to the interface protocol of the A10/A11 of standard.
Grouping busihess data after step 206:PDSN will decompress is sent to the packet switching network, such as, internet, Ethernet etc., net loaded by packet switching, and be sent to the destination according to the destination address in the grouping busihess data, finish the transmission of upstream data bag.
Reception for downlink business, its process is opposite with the transmission of uplink service, partly realize the normal transmission of grouping busihess data in the core net of CDMA, after PDSN receives normal packet, be transmitted to the packet-processing function node, finish compression by it, in wireless access network, realize the compression transmission of grouping busihess data packet.Its detailed process is as follows:
At first, in step 211: the grouping busihess data that receives the packet switching network transmission by PDSN.
Then, enter step 212:PDSN and send the grouping busihess data that receives to the packet-processing function node.
Step 213: the packet-processing function node compresses grouping busihess data.
Then, enter step 214: the grouping busihess data after will compressing is sent to PCF.
Step 215:PCF is forwarded to BSC with the grouping busihess data of receiving.
Step 216: by the base station grouping busihess data is sent to corresponding MS by BSC.
In uplink service, need realize compression by MS to business datum, then, the packet after the compression is sent to the packet-processing function node of foundation, by this node packet is decompressed, the packet after will decompressing then is sent to PDSN.
MS realizes by following process the compression of business datum:
(1) MS is encapsulated as the network layer data bag with grouping busihess data.
Such as, can grouping busihess data be encapsulated as the network layer data bag according to the IP/UDP/RTP agreement; Can also grouping busihess data be encapsulated as the network layer data bag according to ICP/IP protocol.
(2) press packet header of predetermined way compression network layer data bag.Can adopt standard-compression algorithm, also can adopt privately owned compression algorithm to compress.
(3) packet after travelling carriage will compress is sent to the block functions node.
In downlink business, need compress business datum by the block functions node PPF that sets up, then, the packet after the compression is sent to MS, by MS packet is decompressed, obtain the business datum that needs.
MS is opposite with above-mentioned compression process to the decompression process of business datum, according to predetermined algorithm the packet that receives is decompressed, and then, peel off the packet header of packet in the packet header after obtaining to decompress, and obtains required payload data.
Mentioning the A10/A11 interface protocol that can adopt standard between PCF and packet-processing function node, PDSN and the packet-processing function node above sets up and communicates by letter.In order to make present technique field personnel understand the process of setting up of communication better, below the A10/A11 protocol stack of the interface is done simple the description.
The A11 agreement is used for command transmitting, and its protocol stack is formed as shown in Figure 3:
For PCF and PDSN, the structure of protocol stack is identical, the A11 signaling that the superiors can discern for the A11 interface, then, this signaling is carried out UDP/IP (user datagram protocol/Internet Protocol) encapsulation, last, with the signaling data bearing after the encapsulation on the physical layer of Ethernet.
Wherein, udp protocol is the Network Transmission layer protocol, and it mainly acts on is the form that network traffic data is compressed into packet.UDP header is made up of 4 territories, and wherein each territory respectively takies 2 bytes, shown in the table 1 specific as follows.
Table 1:
| 2 bytes | 2 bytes | 2 bytes | 2 bytes |
| Source port number | Destination port number | Datagram length | Check value |
A typical packet is exactly the unit of transfer of a binary data.Preceding 8 bytes of each packet are used for comprising header information, and remainder bytes then is used for comprising concrete transmission data.
The A10 agreement is used for bearer service, and its protocol stack is formed as shown in Figure 4:
For PCF, by GRE (Generic Routing Encapsulation)/IP business datum is encapsulated, and the business datum after will encapsulating is carried on the physical layer of Ethernet;
For PDSN, by PPP (peer-peer protocol)/GRE (Generic Routing Encapsulation)/IP encapsulates business datum, and the business datum after will encapsulating is carried to the physical layer of Ethernet.
Wherein, ppp protocol is the link layer protocol for the so simple link design of transmits data packets between equal unit.This link provides full-duplex operation, and Data transmission bag in order.Purpose of design mainly is to be used for setting up point-to-point connection by dialing or private-line mode to send data, makes it become the simple a kind of common solution that connects between various main frames, bridge and the router.
The GRE agreement is that the packet to some network layer protocol encapsulates, and these packed packets can be transmitted in another network layer protocol.
In the inventive method, set up the compression and decompression that the packet-processing function node is realized service data transmission.Unaffected for systemic-function after making this node of adding, need this node can read the A10/A11 interface message on the one hand, also want the compression negotiation between emulation PDSN realization and MS on the other hand.For the packed data that comes from MS, can decompress at this node, and send to PDSN according to the requirement of A10 interface.Therefore, based on the protocol stack structure of above-mentioned PCF and PDSN, the packet-processing function node of setting up in the inventive method need the foundation signaling surface protocol stack identical with PCF and PDSN, as shown in Figure 5.
According to actual requirement, can realize multiple compression scheme at this node, for example:
1,, is used for the head compression of IP/UDP/RTP, applicable to the service application of real-time class based on the compression scheme of RFC2508.
When adopting this compression scheme, the service surface protocol stack structure that this node is set up as shown in Figure 6:
Wherein the left side is the protocol stack of corresponding PCF, and the right is the protocol stack of corresponding PDSN.
Utilize this protocol stack, realize the decompression of upstream data and the compression of downlink data, implementation procedure as shown in Figure 7:
This node has the bag of both direction in protocol processes: downstream packets and uplink packet, handle as follows respectively:
(1) downstream packets.Business packet from PDSN, be non-compressed package, after this node device receives, the IP/UDP/RTP head and the RTP that solve wherein go up the content of carrying, adopt the compression algorithm that consults with MS then, after the compression of IP/UDP/RTP head, go up the data of the content of carrying with RTP as ppp protocol, on PPP, send to MS.
After MS receives packet,, give decompression module, unpack the business datum that obtains on the RTP wherein ppp protocol bag data according to the information of having preserved.
(2) uplink packet.From the business packet of MS, be compressed package, after this node device receives, decompression IP/UDP/RTP head, and take out RTP and go up the loaded service bag, according to complete protocol stack reorganization business packet, send to PDSN then.
2,, be used for the compression scheme of IP/TCP, applicable to business of networking commonly used based on the compression scheme of RFC1144.
When adopting this compression scheme, the service surface protocol stack structure that this node is set up as shown in Figure 8:
Wherein the left side is the protocol stack of corresponding PCF, and the right is the protocol stack of corresponding PDSN.
Utilize this protocol stack, realize the decompression of upstream data and the compression of downlink data, implementation procedure as shown in Figure 9:
This node has the bag of both direction in protocol processes: downstream packets and uplink packet, handle as follows respectively:
(1) downstream packets.Business packet from PDSN, be non-compressed package, after this node device receives, the IP/TCP head and the TCP that solve wherein go up the content of carrying, adopt the compression algorithm that consults with MS then, IP/TCP head compression back and business packet in the lump as the data of ppp protocol layer, are carried on and send to MS on the ppp protocol.
(2) uplink packet.From the business packet of MS, be compressed package, after this node device receives, according to the regulation of RFC1144 agreement, decompression IP/TCP head, and the business datum on the taking-up tcp protocol layer, the protocol stack reorganization business packet according to complete sends to PDSN.
With reference to Figure 10, Figure 10 is the networking schematic diagram of system of the present invention:
This system is based on existing CDMA2000 apparatus for network node, between group control of functional node equipment 103 and group data service node equipment 105, add packet-processing function node device 104, by the compression and decompression of this equipment realization to grouping busihess data, make grouping busihess data in wireless access network, compress transmission, to save wireless bandwidth.
In this system, identical in the function of group control of functional node equipment 103 and group data service node equipment 105 and the existing cdma network, wherein, group control of functional node equipment 103 is used to realize the R-P connection management, and group data service node equipment 105 is used to finish described mobile subscriber's Packet Service exchange.
For uplink service, by travelling carriage 101 uplink service is encapsulated as the network layer data bag by related protocol, then, this packet is compressed by pre-defined algorithm, then the packet after the compression is carried out wireless-modulated, the wireless signal after will modulating by base transceiver station 102 inserts wireless access network, that is to say, this signal is sent to group control of functional node equipment 103, set up mobile subscriber's Packet Service by this node device.
In order to realize the correct identification of 105 pairs of business datums of group data service node equipment, grouping busihess data after the compression need be sent to packet-processing function node device 104 earlier, send to group data service node equipment 105 again after decompressing by this equipment, and then the business datum accessing group data net 106 after will decompressing by this equipment.
Equally, for downlink business, the normal packets business datum that is transmitted by Packet Data Network 106 receives by group data service node equipment 105, in order to save wireless bandwidth resource, realize the compression transmission of grouping busihess data in wireless network, by group data service node equipment 105 normal grouping busihess data is sent to packet-processing function node device 104 earlier, by this equipment grouping busihess data is compressed, data after will compressing then are sent to packet-processing function node device 104, by base transceiver station this packed data is sent to travelling carriage again, travelling carriage decompresses to these data, obtains required business information.
Travelling carriage and packet-processing function node device 104 realize that the mode of compression and decompression should consult in advance, can correctly solve the business datum that needs to guarantee to receive.When real network was set up, travelling carriage and packet-processing function node device can be provided by same operator, certainly, also can adopt identical standard interface to realize by different operators.
The structure of packet-processing function node device 104 comprises as shown in figure 11: Packet Control Function interface module 111, group data service node interface module 112 and compression/de-compression module 110.Wherein,
Packet Control Function interface module 111 is the interfaces that link to each other with group control of functional node equipment in the system of the present invention, be used for grouping busihess data with the mutual compression of group control of functional node equipment, this interface comprises Packet Control Function data reception module S1 and Packet Control Function data transmission blocks S2, is respectively applied for reception and transmission and the mutual business datum of group control of functional node equipment.
Group data service node interface module 112 is the interfaces that link to each other with group data service node equipment in the system of the present invention, be used for and the mutual normal grouping busihess data of group data service node equipment, this interface comprises group data service node receiver module S3 and group data service node sending module S4, is respectively applied for reception and transmission and the mutual business datum of group data service node equipment.
Compression/de-compression module 110 is finished the function that business datum that the business datum that Packet Control Function interface module 111 is received decompresses, group data service node interface module 112 is received is compressed.
In order to realize communicating by letter of PCF equipment and PDSN equipment in packet-processing function node device 104 and the existing cdma network, Packet Control Function interface module 111 and group data service node interface module 112 can adopt marks A10/A11 interface accurately, in front detailed description has been done in protocol stack and the realization thereof to the A10/A11 interface in the description of the inventive method, do not repeated them here.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, wish that appended claim comprises these distortion and variation and do not break away from spirit of the present invention.
Claims (13)
1. realize the method that grouped data is compressed on a CDMA network, it is characterized in that described method comprises:
A, between the group control of functional node of described CDMA network and group data service node, set up the packet-processing function node;
B, when setting up Packet Service, consult compression algorithm by travelling carriage and packet-processing function node;
C, described travelling carriage compress up described grouping busihess data and are sent to described packet-processing function node;
D, by described packet-processing function node described grouping busihess data is carried out decompress(ion) and contract and be sent to the packet switching network.
2. method according to claim 1 is characterized in that, described method also comprises:
E, after described packet-processing function node receives the grouping busihess data of described packet switching network transmission, described grouping busihess data is compressed and is sent to corresponding travelling carriage.
3. method according to claim 1 and 2 is characterized in that, described step C comprises:
C1, described travelling carriage are encapsulated as the network layer data bag with described grouping busihess data;
C2, compress packet header of described network layer data bag by described compression algorithm;
C3, the packet after will compressing are sent to described packet-processing function node.
4. method according to claim 3 is characterized in that, described step C1 is specially: described travelling carriage is encapsulated as the network layer data bag according to procotol/user datagram protocol/RTP with described grouping busihess data.
5. method according to claim 3 is characterized in that, described step C1 is specially: described travelling carriage is encapsulated as the network layer data bag according to transmission control protocol/procotol with described grouping busihess data.
6. method according to claim 3 is characterized in that, described compression algorithm comprises: standard-compression algorithm, privately owned compression algorithm.
7. method according to claim 3 is characterized in that, described step C3 comprises:
Packet after C31, described travelling carriage will compress is sent to described group control of functional node;
C32, the described group control of functional node packet after with described compression is sent to described packet-processing function node.
8. method according to claim 3 is characterized in that, described step D comprises:
D1, the described packet-processing function node described grouping busihess data that decompresses;
D2, the grouping busihess data after will decompressing are sent to described group data service node;
D3, the described group data service node grouping busihess data after with described decompression is sent to the described packet switching network.
9. method according to claim 1 is characterized in that, described packet switching network comprises: internet, Ethernet.
10. realize the system that grouped data is compressed on a CDMA network, comprising: travelling carriage, base transceiver station, group control of functional node equipment, group data service node equipment, wherein,
Described base transceiver station is used for the wireless signal of described travelling carriage is inserted wireless access network,
Described group control of functional node device coupled is used to realize the R-P connection management in described base transceiver station,
Described group data service node equipment is used to finish described mobile subscriber's Packet Service exchange,
It is characterized in that, also comprise:
The packet-processing function node device is coupled in described group control of functional node equipment and described group data service node equipment respectively, is used for described Packet Service is carried out compression and decompression.
11. system according to claim 10 is characterized in that, described packet-processing function node device comprises:
The Packet Control Function interface module is coupled in described group control of functional node equipment, is used for the grouping busihess data with the mutual compression of described group control of functional node equipment;
The group data service node interface module is coupled in described group data service node equipment, is used for and the mutual grouping busihess data that decompresses of described group data service node equipment;
The compression/de-compression module is coupled in described Packet Control Function interface module and described group data service node interface module respectively, finishes the compression and decompression conversion of described grouping busihess data.
12. system according to claim 11 is characterized in that, described Packet Control Function interface module comprises:
The Packet Control Function data reception module is used to receive the data that described group control of functional node equipment sends;
The Packet Control Function data transmission blocks is used for to described group control of functional node equipment sending data.
13. system according to claim 11 is characterized in that, described group data service node interface module comprises:
The group data service node receiver module is used to receive the data that described group data service node equipment sends;
The group data service node sending module is used for to described group data service node equipment sending data.
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| CNB2004100793527A CN100414926C (en) | 2004-09-30 | 2004-09-30 | Method and system for realizing packet data compression in CDMA network |
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| US8923195B2 (en) | 2012-03-20 | 2014-12-30 | Futurewei Technologies, Inc. | Method and apparatus for efficient content delivery in radio access networks |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1279857A (en) * | 1997-11-24 | 2001-01-10 | 诺基亚网络有限公司 | Data compression negotiation in a telecommunication system |
| US20040008650A1 (en) * | 2002-07-12 | 2004-01-15 | Khiem Le | Wireless communications system having built-in packet data compression and support for enabling non-standard features between network elements |
| CN1520661A (en) * | 2001-06-25 | 2004-08-11 | 艾利森电话股份有限公司 | Method for control of data compression |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1279857A (en) * | 1997-11-24 | 2001-01-10 | 诺基亚网络有限公司 | Data compression negotiation in a telecommunication system |
| CN1520661A (en) * | 2001-06-25 | 2004-08-11 | 艾利森电话股份有限公司 | Method for control of data compression |
| US20040008650A1 (en) * | 2002-07-12 | 2004-01-15 | Khiem Le | Wireless communications system having built-in packet data compression and support for enabling non-standard features between network elements |
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