CN101091335A - Method and system for implementing multi-chain collection in UMTS system - Google Patents

Abstract

A wireless communication system includes user terminal device, radio access network linking with the user terminal device via air interface(Uu), GPRS packet data network, and external packet data network, wherein said GPRS packet data network includes service GPRS supporting node (SGSN) and gateway GPRS supporting node (GGSN). Said user terminal device supports multi-link convergence and said gateway GPRS supporting node supports multi-link convergence. A method for data transmission includes the steps of : establishing first PLMN carrying channel by first wireless Modem by means of packet data protocol context activation process; establishing second PLMN carrying channel by second wireless Modem by means of packet data protocol context activation process; converging the first PLMN and second PLMN carrying channel into an ML-PPP logic link; and transmitting data over said logic link.

Description

Method and system for implementing multi-chain collection in UMTS system

The method and system technical field of multilink convergence is realized in the umts system

It is more particularly to a kind of to converge to increase the method and system of message transmission rate using the multilink of multiple wireless Modems in the umts system the present invention relates to the Radio Transmission Technology of grouped data in GSM.Background technology

1. the multilink convergence technology in current wireless data access

With wireless data service, proportion is continuously increased in radio communication service, and the demand to data transfer bandwidth is also increasing.But, limited by frequency spectrum resource, equipment complexity and power consumption of terminal, single wireless communication Modem (modems）The data transfer rate that can be supported is often relatively low, it is difficult to the need for meeting high-speed data service, also, because the change and interference by channel circumstance are influenceed, the reliability of the Radio Link of larger speed is not high.Therefore, how the application accessed for some broadband wireless datas, typically such as towards the broadband wireless data access service of medium and small ^ ^ companies or enterprise, provide at a high speed and reliable wireless data access be to need key problems-solving.

P. Rodriguez, R. Chakravorty et al. are in paper " MAR:A Commuter Router Infrastructure for the Mobi le Internet " (can be from network address http://research, microsof t. com/ pablo/papers/mobisysQ4. pdf are downloaded) in, it is proposed that one kind is referred to as MAR (Mobi le Access Router) wireless data access system.The system allows different wireless communication network, such as UMTS (UMTSs）, GPRS (general packet data business）, WLAN (WLANs）Deng Radio Link be gathered together so as to obtaining higher data rate, as shown in Figure 1.Although MAR has the ability that different system multilink is converged, but, the special MAR access servers of system needs realize the convergence of multilink, simultaneously because the variability of different pieces of information link is larger, the Slow for needing larger capacity is deposited and is caused larger end-to-end propagation delay time by multilink convergence.

For using single wireless communication system（Such as use UMTS network）Converge to provide the application of high speed and reliable wireless data access based on multilink, the transmission path that each link undergoes in the wireless communication system has similitude, therefore can take more effective multilink convergence technology to reduce end-to-end propagation delay time and reduce system complexity.In addition, to such use MAR systematic differences, the corresponding wireless Modem of each link is required to take different network layer address respectively（I.e. Need multiple IP address resources）, therefore it is also required to avoid the consumption of said system resource using more effective multilink convergence technology.

2. peer-peer protocol（PPP) with Multi-link Point to Point Protocol (ML-PPP)

Peer-peer protocol (PPP) provides a kind of method that multiprotocol datagram is transmitted on point-to-point link, and it is made up of three major parts：A kind of method for encapsulating multiprotocol datagram；For setting up, configuring the LCP being connected with tests data-link（LCP ) ；And for setting up and configuring the Network Control Protocol race of heterogeneous networks layer protocol（NCP ) .Wherein, LCP is divided into three classes：Link configuration for setting up with configuration link is grouped（Configure-Request, Conf igure-Ack Conf igure-Nak and Conf igure- Reject), the link termination that there is link for terminating is grouped (Terminate- Request, Terminate-Ack, Terminate- Request and Terminate-Ack), and is grouped (Code-Reject for the link maintenance for managing and testing link；、 Protocol-Reject s Echo- Request；、 Echo-Reply ^ Discard-Request ) .

In order to set up communication on a point-to-point link, every one end of the ppp link must send LCP packets first to configure and test the data link, after the link establishment, opposite end can be authenticated, then, PPP must send NCP packets to select and configure one or more network layer protocols, once complete the configuration of network layer protocol, packet can just be sent on the link, untill explicitly closing the link with LCP packets.

Multi-link Point to Point Protocol (ML-PPP) is the agreement to make full use of link bandwidth and being extended to PPP.ML-PPP specifications extend three lcp options related to multichain dataway operation, i.e. (multilink maximum receives reconstruction unit to MRRU）, multichain is short out sequence number head form and end points discriminator (Endpoint Discriminator), these three options are utilized during PPP link establishments, when there is the physical link of one or more in identical two ends, each physical link can be pooled to a link bundle in logic, so as to provide an increased logical links of bandwidth converged by multilink for upper-layer protocol.Once multilink is consulted to be successfully established by LCP, sender system just can freely send the data with multichain road, wherein, ML-PPP encapsulates ppp multilink segment data using protocol identifier 0x00-0x3d.Specification RFC1990 according to IETF on ML-PPP, the Packet scheduling of each Member Link in ML-PPP multilinks, typically can using etc. press the segmentation of each year-on-year quantity of Member Link rate-allocation after point former packet again, or by each Member Link transmission rate by the former segmentation for being divided into length for corresponding proportion.

3. problem to be solved by this invention

As previously described, because being limited by equipment complexity and power consumption of terminal, single wireless Modem The user's access rate that can be provided is limited.In order to realize high speed and reliable wireless data access using existing wireless Modem, the present invention propose it is a kind of effective, reduce end-to-end propagation delay time and Wireless Communication Equipment complexity as far as possible, the method and system that the wave point multilink without special access server is converged.The present invention is accessing some APN (access point using multilink simultaneously）When only take up an IP address, so as to be conducive to saving limited IP address resource.The content of the invention

According to an aspect of the invention, there is provided a kind of wireless communication system, including：Ustomer premises access equipment；Pass through air interface（Uu) the wireless access network linked with the ustomer premises access equipment；GPRS Packet Data Networks；And external packet data net；Wherein described GPRS Packet Data Networks include Serving GPRS Support Node（) and Gateway GPRS Support Node SGSN（ GGSN )；It is characterized in that：The subscriber terminal equipment supports multilink convergence, and the Gateway GPRS Support Node supports multilink convergence.

According to another aspect of the present invention there is provided a kind of method for transmitting data in a wireless communication system, the wherein wireless communication system includes：Ustomer premises access equipment；Pass through air interface（Uu) the wireless access network linked with the ustomer premises access equipment；GPRS Packet Data Networks；And external packet data net；Wherein described GPRS Packet Data Networks include Serving GPRS Support Node（) and Gateway GPRS Support Node SGSN（GGSN )；The subscriber terminal equipment includes wireless Modem pond part, link control unit and the application obscure portions being made up of at least the first and second wireless Modems；And the gateway GPRS supporting node supports multilink convergence；The method comprising the steps of：（A) first wireless Modem sets up the first PLMN bearer path by packet data protocol context activation process；（B) second wireless Modem sets up the 2nd PLMN bearer path by packet data protocol context activation process；（C) it is a ML-PPP logical links first and second PLMN to be held into sanction passage convergence；And（D) in the logical links transmitting data.Brief description of the drawings

Fig. 1 is MAR schematic network structures；

Fig. 2 is UMTS network structural representation；

Fig. 3 is the system for realizing the convergence of wave point multilink based on the present invention；

Fig. 4 is using multilink convergence schematic diagram when IP intercommunications and PPP termination mode；

Fig. 5 shows multilink convergence signaling process when GGSN uses IP intercommunications with external packet data networks； Fig. 6 shows a kind of Options Structure of end points discriminator；

Fig. 7 shows multilink convergence signaling process when GGSN uses PPP termination mode with external packet data networks intercommunication；

Multilink convergence schematic diagram when Fig. 8 shows to use PPP trunking schemes；

Fig. 9 shows multilink convergence signaling process when GGSN uses PPP trunking schemes with external packet data networks intercommunication.Embodiment

As shown in Fig. 2 packet domain UMTS network mainly includes UMTS wireless access networks（UTRAN) and two parts of GPRS Packet Data Networks, wherein UTRAN is by Node B (node B) and RNC (radio network controllers）Composition, GPRS Packet Data Networks are by SGSN (Serving GPRS Support Nodes）With GGSN (Gateway GPRS Support Nodes）Composition.UE (user equipmenies）It is that Uu interfaces are connected with UTRAN by air interface, UTRAN is connected by Iu-PS interface with SGSN, the interface between SGSN and GGSN is gn interface, and the interface of GGSN and external packet data net is Gi interfaces.UE can be further divided into TE (terminal devices in structure）With MT (mobile terminals）, the function of UE sides Uu interface protocols is responsible for completion by MT.On UMTS network structure and the detailed description of packet domain, 3GPP (third generation collaborative projects are may be referred to）TS23. 002 and the grade protocol specifications of TS23. 060.

Fig. 3 gives the system architecture that multilink convergence is realized in UMTS systems based on the present invention.Wherein, ustomer premises access equipment is to be divided into wireless Modem pond part, link control unit and application obscure portions in the user equipment that multilink aggregation feature is supported shown in figure, the user device architecture.Wherein, wireless Modem pond part is made up of multiple independent wireless Modems, and each wireless Modem has different IMSI (IMSI International Mobile Subscriber Identities）, the function of complete independently UE sides Uu interface protocols each safeguard corresponding with UMTS access networks and core net protocol status and protocol processes；Link control unit is responsible for carrying out each wireless Modem corresponding link convergence processing, and is responsible for management and the control function of link；Application obscure portions then include the function of user terminal application layer segment.In the network side of structure shown in Fig. 3, wireless access mesh portions are same as the prior art, and in GPRS grouped datas mesh portions compared with prior art, GGSN adds the support function of being converged to multilink.

The just blunt specification TS29. 061 according to 3GPP, the intercommunication of GGSN and external packet data networks is typically divided into IP and PPP two types, they are respectively divided into IP transparent transmissions and IP non-transparent transmission kind modes, and PPP termination and PPP trunking schemes again.Which kind of intercommunication mode to be typically specifically by PLMN (public land mobile net networks using）Operator Intranet/ISP corresponding to each APN interconnection agreement and determine. In the transparent/non-transparent transmission means of IP, user grouping is grouped for IP, and GGSN is equivalent to router for external packet data networks, and the difference of both modes is：In IP non-transparent transmission modes, PDP Context (block data protocol contexts）GGSN is acted on behalf of by Radius during foundation and DHCP (DHCP) agent functionalitys are via Intranet/ISP (ISPs）Radius and Dynamic Host Configuration Protocol server carry out IP address distribution and user authentication.Therefore, UE should attach " Protocol conf igurat ion opt ions " (protocol configuration option when initiating activation PDP Context requests）IE (information units）Option, SGSN then by its it is transparent be transferred to GGSN, the information such as user account number necessary to the user is authenticated to Intranet/ISP is carried in the IE.

In PPP termination and PPP trunking schemes, user grouping is grouped for PPP, wherein the PPP connections of PPP termination mode are set up between GGSN and TE, the information such as the user account number needed for the progress IP address distribution of Radius and DHCP servers and user authentication, but certification that PDP Context act on behalf of with DHCP proxy function via Intranet/ISP by Radius after setting up by GGSN and the configuration of IP layer protocols are transmitted by the PPP LCP/NCP agreements connected；The PPP connections of PPP trunking schemes are set up between ISP and TE, and GGSN is then pellucidly by PPP packets typically via the L2TP (tunnel protocols of layer two）Intranet/ISP is forwarded to Deng tunnel protocol, and the function such as IP address distribution and user authentication is then responsible for completion by Intranet/ISP.

According to the present invention, when the intercommunication of GGSN and external packet data networks uses IP transparent or non-transparent transmission mode, multilink convergence is realized as shown in Fig. 4.Each wireless Modem of user terminal sets up independent PLMN bearer path by PDP Context activation respectively, and link control unit is then responsible for realizing the multilink convergence of the corresponding PLM bearer path of each wireless Modem based on ML- PPP in user terminal, multilink aggregation feature of the network side based on ML-PPP realizes that User IP packet is transmitted by the logical links converged through multilink at GGSN.

When GGSN and external packet data networks intercommunication use IP transparent or non-transparent transmission mode, PDP types are IP, user grouping is grouped for IP, therefore ML-PPP multilink features are transparent for existing protocol operation, be present in multiple PLMN hold cultivation passage on for IP be grouped the link converged in logic is provided, it is just blunt according to TS24. 008 and signaling related with the operation such as PDP Context activation/deactivations described in TS29. 060 without changing, nor affect on the operation when GGSN according to TS29. 061 uses IP intercommunications with external packet data networks.

Fig. 5 is sub in case of two wireless Modems, gives GGSN and uses multilink convergence during IP intercommunications to realize signaling process with external packet data networks.First, upper electricity latter two wireless Modem Fen Do carry out the initialization operations such as GPRS attachment and PLM certifications, when UE application obscure portions When needing to access external packet data net by UMTS, Modem #1 will set up PLM bearer path according to the PDP Context activations described in TS24. 008 and TS29. 060.Step 1-5 i.e. as shown in Figure 5, Modem #1 send " Act ivate PDP Context Reques t " (activation PDP Context request to the SGSN accompanying by it）Message, wherein, according to the 3GPP specifications, to the situation of STATIC IP ADDRESSING, the pdp address in the message is the static ip address that the UE is distributed, situation about distributing dynamic IP addressing, pdp address in the message is sky, another sunset is foretold, nontransparent to IP to pass pleased mode, and the message should carry IE options " Protocol conf igurat ion opt ions "；Then, the SGSN sends " Create PDP Context Reques t " (creating PDP context requests) message to GGSN, to IP non-transparent transmission modes, the IE options " Protocol conf igurat ion opt ions " will be used for ISP/Intranet certifications by the transparent GGSN that is transferred to of the message." Create PDP Context Response ", which is sent, after GGSN completes the processes such as IP address distribution, certification to the SGSN (creates PDP Context response）Message, the subsequent SGSN will be communicated with UTRAN and set up corresponding RAB (RABs）, most after to Modem #1 send " Act ivate PDP Context Accept " (activation PDP Context receive）Message, and Modem #1 will indicate UE sides ML- PPP entities it is successfully established PLMN bearer path.

According to the present invention, as shown in Figure 5, when UE determines activation Modem #2 to improve transmission bandwidth, UE sides ML-PPP entities will notify Modem #2 activation to increase PLMN bearer path newly, now Modem #2 will be set up corresponding PLMN bearer path by above-mentioned steps, wherein, pdp address in " Act ivate PDP Context Reques t " message that Modem #2 are sent to the SGSN accompanying by it, to the situation of STATIC IP ADDRESSING, pdp address in the message is the static ip address that the above-mentioned UE of identical is distributed, situation about distributing dynamic IP addressing, the IP address distributed when as Modem #1 set up PLMN bearer path by network.To IP non-transparent transmission modes, Modem #2 will carry " Protocol conf igurat ion opt ions " no longer in " Act ivate PDP Context Reques t " message, therefore avoid the ISP/ Intranet authentication operations that GGSN is repeated to the UE.

According to the present invention, as shown in Figure 5, after UE sides ML-PPP entities, which obtain Modem #2, is successfully established the instruction of PLMN bearer path, ML-PPP entities first from from Modem #1 to GGSN initiate to set up basic ppp link on the PLM bearer path that it is built, then initiate to set up Article 2 PPP links on the PLMN bearer path that it is built from ML-PPP entities of the Modem #2 into GGSN and require to collect the link basic ppp link corresponding with Modem #1 for a ML-PPP logical links beam.In addition, on the corresponding PLMN bearer path of Modem #1 ppp link foundation It can complete to carry out after PLMN bearer path is set up in Modem #1（As shown in step 6 in Fig. 5）Now, because user grouping adds PPP header overheads thus slightly has influence on efficiency of transmission, but this mode of operation is by the processing of cylinder user plane, i.e., need not be in user data transmission to whether additional PPP heads carry out judging to handle with corresponding.

Table 1：Lcp option " Endpoint Di scriminator " Class/Address field definitions

Because a wireless Modem may be set up with multiple pdp addresses（Here it is IP address）Identical but the different APN of connection PLMN holds cultivation passage, therefore, in order to be tied needed for being indicated to GGSN The PLM bearer path tied up with the combination of APN and UE IP address in ML- PPP LCP options " Endpoint Discriminator ", it is necessary to carry out end points discriminating.It is just blunt according to IETF (internet engineering task groups）Specification RFCI O, the structure of LCP options " Endpoint Di scriminator " is as shown in Figure 6, wherein, the type field identifies the lcp option, Length fields are the byte length of the lcp option, and Class fields show the classification of the Address fields of used mark ML- PPP end points, wherein, allocated Class field values are 0-5, and it defines as shown in table 1.As described above, the present invention needs to be combined with corresponding IP address with APN to carry out end points discriminating, therefore, the present invention newly defines two Class field values（Such as value 7 in table 1 and 8), and two corresponding Address fields（Such as " the GPRS Endpoint Ident ity 1 " and " GPRS Endpoint Identi ty 2 " in table 1), correspond to respectively（IPv4 addresses+APN) with（IPv6 addresses+APN), because APN maximum lengths are 102 bytes, therefore the maximum length of the two Address fields is respectively 106 bytes and 118 bytes.

It is still as shown in Figure 5 on multilink aggregation infrastructure when the intercommunication of GGSN and external packet data networks uses PPP termination mode according to the present invention.But now PDP types are PPP, i.e. user PPP is grouped into UMTS network finding, at this moment by the GGSN described in TS29. 061 and external packet data networks making certain change, i.e. corresponding operating and should increase the support to ML-PPP using PPP termination mode.In the multilink convergence signaling process shown in Fig. 7 using PPP termination mode, the corresponding PLMN bearer path of Modem #l is still set up as described in TS24. 008 and TS29. 060, then in step 6, as described in TS29. 061, held in the PLMN and set up corresponding PPP connections on cultivation passage, and LCP should carry corresponding ISP/Intranet authentication options to carry out ISP/Intranet certifications when setting up the ppp link, further need exist for running the IP address that PPP NCP agreements (IPCP/IPV6CP) acquisition is distributed by ISP/Intranet.

As shown in Figure 7, when UE determines activation Modem #2 to improve transmission bandwidth, UE sides L-PPP entities will notify Modem #2 activation to increase PL gangster's bearer path newly, now Modem #2 will hold cultivation passage by corresponding PLM is set up, wherein, pdp address in " Act ivate PDP Context Request " message that Modem #2 are sent to the SGSN accompanying by it, to the situation of STATIC IP ADDRESSING, pdp address in the message is the static IP address that the above-mentioned UE of identical is distributed, situation about distributing dynamic IP addressing, the IP address distributed when as Modem #1 set up PLMN bearer path by network.After the completion of the corresponding PLMN of Modem #2 hold cultivation Path Setup, corresponding PPP connections will be set up on the PLMN bearer path, but LCP no longer carries corresponding ISP/Intranet authentication options when setting up the ppp link, do not rerun PPP NCP agreements (IPCP/IPV6CP) yet, but in order to by newly-built ppp link PPP corresponding with Modem #1 Multilink bundling is a ML- ppp link beam, Modem #2 will carry ML-PPP lcp option when setting up the PPP connections, wherein, for the PLM bearer path of binding needed for being indicated to GGSN, as it was previously stated, carrying out end points discriminating using the combination of APN and corresponding IP address in ML-PPP lcp option " Endpoint Di scr iminator ".

According to the present invention, when GGSN with external packet data networks uses multilink aggregation infrastructure during PPP trunking scheme intercommunications as shown in Figure 8.Now GGSN operation is fully complied with using the PPP user groupings in typically such as each corresponding ppp link of wireless Modem of L2TP Tunnel forwarding described in TS29. 061, and multilink aggregation feature is realized in ISP/Intranet incoming end.The multilink convergence signaling process of this mode is similar to using the multilink convergence signaling process of PPP termination modes, as shown in Figure 9, wherein, the difference is that ML-PPP entities are present in ISP/Intranet incoming end, in addition, the LCP options " Endpoint Discr iminator " used when setting up ML-PPP logical links beams directly use distributed IP address, Class=2 are used to IPv4, the Class/Address fields newly defined are used to IPv6, as shown in table 1.

In addition, due to UE mobility and the independence of each wireless Modem, Node B, RNC of each wireless Modem access of the user equipment of same support multilink aggregation feature and the SGSN accompanying by it may be different, even if each wireless Modem is each attached to same SGSN and accesses identical APN, in the prior art, SGSN may also access the APN when the PDP Context of each wireless Modem are set up due to reasons such as load sharings via different GGSN.Therefore, in order that each wireless Modem of the user equipment of same support multilink aggregation feature accesses identical APN to complete multilink converge operation by the GGSN via same GGSN, according to the present invention, " At tach Reques the t " (attach request initiated in UE to SGSN）IE " MS network capabi l i ty " (mobile subscriber's network ability of message）In, increase a new bit value, for indicating whether the UE has multilink aggregate capabilities to accompanying SGSN；On the other hand, in packet field network planning, the UE that all some APN of access support multilink aggregation feature in a unique GGSN, the packet domain is distributed in a packet domain is responsible for accessing the APN by the GGSN.So, SGSN in the packet domain is after a UE with multilink aggregate capabilities GPRS attachments are successfully completed, request is set up to all PDP Context that the UE is initiated, the corresponding above-mentioned unique responsible multilink convergences of the APN and the address for the GGSN for accessing the APN are obtained all in accordance with the APN of its access, so as to ensure that the UE of all access APN support multilink aggregation feature in the packet domain sets up PLMN bearer path between the GGSN.

Although Fig. 5 and Fig. 7 only give the multilink for adding new PLM bearer path for increase bandwidth and converge signaling process, the signaling process of the present invention and prior art are combined, can To complete the operation that already present PLMN bearer path is deleted because reducing bandwidth, or change the attribute of PLMN bearer path（Such as bandwidth）Deng operation.In addition, in above-mentioned multilink converge operation, the method that multilink can use static configuration, start corresponding link establishment operation by being set in advance on UE after electricity, but in order to make full use of Radio Resource, preferably, the method that multilink uses dynamic control, now supports the user equipment of multilink aggregation feature preferably to will be responsible for following intelligent processing method：

■ carries out the statistics of up-downgoing average discharge, and wherein up-downgoing average discharge refers to that the UE is up in a period of time（Or it is descending）Direction is sent（Or receive）The time of data traffic is averaged；

■ monitors uplink downlink utilization rate, and wherein uplink downlink utilization rate is the ratio of up-downgoing average discharge and current total link bandwidth, and using the comparison of link utilization and predetermined threshold, makes the decision for increasing or decreasing link bandwidth；

■ according to wireless Modem pond hardware configuration situation, when needing to activate or deactivating Modem to increase or decrease link bandwidth, the selection for the Modem for needing to activate or deactivating is made, the attribute of corresponding PL gangsters bearer path is should determine that to activation situation（Such as maximum rate）.

Claims (1)

1. Claim

   1. a kind of wireless communication system, including：

   Ustomer premises access equipment；

   Pass through air interface（Uu) the wireless access network linked with the ustomer premises access equipment；

   GPRS Packet Data Networks；And

   External packet data net；

   Wherein described GPRS Packet Data Networks include Serving GPRS Support Node（) and gateway GPRS supporting node SGSN（GGSN )；

   It is characterized in that：

   The subscriber terminal equipment supports multilink convergence, and

   The Gateway GPRS Support Node supports multilink convergence.

   2. wireless communication system as claimed in claim 1, wherein, the ustomer premises access equipment includes：Wireless Modem pond part；

   Link control unit；With

   Application obscure portions；

   It is characterized in that：

   Wireless Modem pond part includes multiple wireless Modems, and each wireless Modem has different IMSI International Mobile Subscriber Identities, the function of complete independently ustomer premises access equipment side air interface；And

   The link control unit carries out convergence processing, the management and control of line link of going forward side by side to the corresponding link of each wireless Modem.

   3. system as claimed in claim 2, wherein：

   Each in the multiple wireless Modem sets up independent PLMN bearer path by packet data protocol context activation respectively；

   The link control unit carries out multilink convergence in user terminal to the corresponding PLM bearer path of each wireless Modem based on Multi-link Point to Point Protocol ML-PPP；

   The corresponding PLMN bearer path of each wireless Modem is pooled a logical links by the Gateway GPRS Support Node based on ML-PPP in network side.

   4. system as claimed in claim 2, wherein：

   Each in the multiple wireless Modem sets up independent PLMN bearer path by packet data protocol context activation respectively；

   The link control unit is in user terminal to each wireless Modem correspondence based on ML-PPP PLMN bearer path carry out multilink convergence；

   PPP on the corresponding link of each wireless Modem is forwarded a packet to ISP/Intrannet access points by the Gateway GPRS Support Node；And

   It is a logical links that the ISP/ Intrannet, which connect at 8 points by the corresponding link aggregation of each wireless Modem,.

   5. a kind of method for transmitting data in a wireless communication system, wherein wireless communication system includes：Ustomer premises access equipment；Pass through air interface（Uu) the wireless access network linked with the ustomer premises access equipment；GPRS Packet Data Networks；And external packet data net；Wherein described GPRS Packet Data Networks include service GPRS supporting node（) and gateway GPRS supporting node SGSN（ GGSN )；The subscriber terminal equipment includes wireless Modem pond part, link control unit and the application obscure portions being made up of at least the first and second wireless Modems；And the Gateway GPRS Support Node supports multilink convergence；The method comprising the steps of：

   (a) first wireless Modem sets up-PLMN bearer path by packet data protocol context activation process；

   (b) second wireless Modem sets up the 2nd PLM bearer path by packet data protocol context activation process；

   (c) it is a ML-PPP logical links by the first and second PLMN bearer path convergence；And

   (d) in the logical links transmitting data.

   6. method as claimed in claim 5, wherein step) further comprise：

   Ji Huo Fen Group Data Protocol Context Request message is sent from first wireless Modem to the Serving GPRS Support Node accompanying by it；

   Sent from the Serving GPRS Support Node to gateway GPRS supporting node and create packet data protocol context request message；

   The gateway GPRS supporting node sends to the service GPRS supporting node and creates block data protocol context response message；

   The Serving GPRS Support Node and the wireless access Network Communication, to set up corresponding RAB；

   The Serving GPRS Support Node sends activation packet data protocol context activation received message to first wireless Modem；

   ML-PPP entity of first wireless Modem into ustomer premises access equipment indicates to be successfully established PLMN bearer path.

   7. method as claimed in claim 5, wherein step（B) further comprise：

   Activation packet data protocol context request message is sent from second wireless Modem to the Serving GPRS Support Node accompanying by it；

   Sent from the service GPRS supporting node to gateway GPRS supporting node and create packet data protocol context request message；

   The Gateway GPRS Support Node sends to the service GPRS supporting node and creates block data protocol context response message；

   The Serving GPRS Support Node and the wireless access Network Communication, to set up corresponding RAB；

   The Serving GPRS Support Node sends activation packet data protocol context activation received message to second wireless Modem；

   L-PPP entity of second wireless Modem into ustomer premises access equipment indicates to be successfully established PLMN bearer path.

   8. method as claimed in claim 7, wherein the packet data protocol address included in the activation packet data protocol context request message is when STATIC IP ADDRESSING, the IP address that as ustomer premises access equipment is distributed；When dynamic IP addressing is distributed, as step（A) IP address of distribution in.

   9. the method as described in claim 7, for IP non-transparent transmission modes, the activation packet data protocol context request message does not include IE options " Protocol Conf igurat ion Opt ions ".

   10. method as claimed in claim 5, for IP transparent transmissions and IP nontransparent modes and PPP termination mode, wherein step（C) further comprise：

   (al) first wireless Modem initiates to set up basic PPP links on the PLMN bearer path that it is built using ML-PPP entities of the ppp link control protocol into Gateway GPRS Support Node；

   (a2) second wireless Modem initiates to set up another ppp link on the PLMN bearer path that it is built using ML-PPP entities of the ppp link control protocol into Gateway GPRS Support Node；And

   (a3) the basic ppp link and another ppp link convergence are a ML-ppp link beam using ppp link control protocol by second wireless Modem.

   11. method as claimed in claim 10, for PPP termination mode, in step（A2 in), when setting up the ppp link, LCP no longer carries corresponding ISP/Intranet certifications choosing , PPP Network Control Protocols of also not reruning.

   12. method as claimed in claim 10, wherein the LCP option " Endpoint Discriminator " in the ML-PPP carries out end points discriminating using the combination of access point and the IP address of ustomer premises access equipment.

   13. method as claimed in claim 5, wherein for PPP trunking schemes, step（C) further comprise：

   (bl) first wireless Modem initiates to set up basic ppp link on the bearer path where it using ML- PPP entities of the ppp link control protocol into ISP/Intranet access points；

   (b2) second wireless Modem initiates to set up another PPP link on the bearer path where it using ML-PPP entities of the ppp link control protocol into ISP/Intranet access points；And

   (b3) the basic ppp link and another ppp link convergence are a ML-ppp link beam using ppp link control protocol by second wireless Modem.

   14. method as claimed in claim 13, in step（B2 in), when setting up the ppp link, LCP no longer carries corresponding ISP/Intranet authentication options, PPP Network Control Protocols of also not reruning.

   15. the LCP option " Endpoint Discriminator " in method as claimed in claim 13, the ML-PPP carries out end points discriminating using the IP address of ustomer premises access equipment.

   16. method as claimed in claim 5, wherein in step（A) before, in addition to step：From the ustomer premises access equipment to Serving GPRS Support Node（SGSN " Attach Request " message) is sent, it is characterised in that

   Comprising an additional bit value in the IE " MS network capabi l i ty " of the message, for indicating whether the ustomer premises access equipment has multilink aggregate capabilities to accompanying Serving GPRS Support Node.

   17. the method as described in claim 5, wherein the wireless communication system distributes a unique Gateway GPRS Support Node in a packet domain（GGSN), the ustomer premises access equipment of all support multilink aggregation features for accessing some access point is responsible for accessing the access point by the Gateway GPRS Support Node in the packet domain, it is characterised in that

   The good business GPRS Support Nodes of JI in the packet domain are after the GPRS attachments of a ustomer premises access equipment with multilink aggregate capabilities are successfully completed, to the ustomer premises access equipment initiate all PDP Context set up request, all in accordance with its access access point obtain the access point it is corresponding it is above-mentioned only One responsible multilink converges and accessed the address of the Gateway GPRS Support Node of the access point, so as to ensure that the ustomer premises access equipment of all support multilink aggregation features for accessing the access points in the packet domain sets up PLMN bearer path between the Gateway GPRS Support Node.

   18. the method as described in any one of claim 5-17, wherein in data transmission procedure, the ustomer premises access equipment performs following operation：

   The statistics of up-downgoing average discharge is carried out, wherein up-downgoing average discharge refers to that the ustomer premises access equipment is up in a period of time（Or it is descending）Direction is sent（Or receive）The time of data traffic is averaged；

   Uplink downlink utilization rate is monitored, wherein uplink downlink utilization rate is the ratio of up-downgoing average discharge and current total link bandwidth, and using the comparison of link utilization and predetermined threshold, makes the decision for increasing or decreasing link bandwidth；

   According to wireless Modem pond hardware configuration situation, when needing to activate or deactivating Modem to increase or decrease link bandwidth, the selection for the Modem for needing to activate or deactivating is made, the attribute of corresponding PLMN bearer path is should determine that to activation situation（Such as maximum rate）.