WO2007041931A1

WO2007041931A1 - A data transmission method, system and device

Info

Publication number: WO2007041931A1
Application number: PCT/CN2006/002455
Authority: WO
Inventors: Min Zha
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2005-10-12
Filing date: 2006-09-20
Publication date: 2007-04-19
Also published as: CN1949742A; CN100464534C

Abstract

A data transmission method, system and device, establish the tunnel between BS and EP according to a wireless terminal, a sending end determines the data flow classification identification information required to be transmitted in said tunnel, and transmits the said data and flow classification identification information to a receiving terminal via the tunnel between BS and EP, the receiving terminal carries out corresponding operation according to flow classification identification information notified by the sending end. The present invention reduces the quantity of tunnel between BS and EP, reduces the path searching operation of ASN built-in function entity, and avoids each functional entity in ASN repeating flow classification; the present invention can realize data transmission between BS and EP using double layer tunnel technology; thus realizes the purpose to relieve the network maintenance tunnel burden beared by ASN, improve a wireless terminal switching efficiency, improve functional entity work efficiency within ASN.

Description

Data transmission method, system and device

Technical field

The present invention relates to the field of network communication technologies, and in particular, to a data transmission method, system, base station device, and execution point device.

Background of the invention

WiMAX (World Interoperability for Microwave Access) is an emerging technology. WiMAX provides "last mile" broadband connectivity over a wider geographic area than Wi-Fi (Wireless Fidelity). WiMAX now has two technical standards: IEEE 802.16d and IEEE 802.16e. Among them, 802.16d only defines two network elements, namely BS (base station) and SS (subscriber station), and broadband fixed wireless connection between BS and SS. Incoming technology interconnection; 802.16e also defines only two network elements, gPBS and MSS (mobile subscriber station), and BS and MSS are interconnected by broadband mobile radio access technology.

Based on 802.16, the WiMAX Forum defines ASN (Access Service Network) and CSN (Connected Service Network) to form a broadband WiMAX network to support fixed, nomadic, portable, simple IP mobile or full mobile access. The overall reference architecture for a WiMAX network is shown in Figure 1.

In Figure 1, R1 is the reference point between MSS/SS and ASN, and R3 is the reference point between ASN and CSN. The ASN can be decomposed into: BS, DP (Decision point) and EP (Excution point). Several reference entities are used. The reference point between BS and EP is R6. The connection relationship between BS, DP, EP and DCSN can be as shown in Fig. 2.

In Figure 2, the solid line indicates the connection at the bearer level, and the dotted line indicates the connection at the control and management level. In the WiMAX basic networking, the protocol hierarchy between MSS-ASN-CSN is shown in Figure 3. In Figure 3, the ASN-GW (ASN Gateway) is a combination of ASN-EP and ASN-DP, and between the BS and the ASN-GW is an ASN backhaul (ASN bearer network).

The R6 tunnel is a connection tunnel between the BS and the ASN-EP. The tunnel can be 802.1Q VLANS (Virtual Local Area Network), MPLS tunnels (Multi-label Protocol Switched Tunnel) or GRE (Generic). Routing Encapsulation, general routing encapsulation, and so on.

Currently, the R6 tunnel can be established in three ways according to the granularity of the R6 tunnel: 1. Establish an R6 tunnel according to the flow; 2. Establish an R6 tunnel according to the MSS/SS; 3. Establish an R6 tunnel according to the BS.

Each R6 tunnel corresponds to a specific stream that has been classified, for example, each R6 tunnel corresponds to an 802.16 service flow identifier such as CID (connection identifier) or SFID (service flow identifier). The classification of the flow can be performed only once in the ASN network, and the specific operation of the subsequent stream can be directly indexed according to R6 turmel.

This method enables each service flow to directly correspond to an R6 tunnel. However, the establishment of an R6 tunnel according to the flow causes a large number of tunnels between the BS and the ASN-EP, thereby greatly increasing the ASN Backhaul between the BS and the EP. The burden of the tunnel. Since the BS and the EP are many-to-many interconnections, the R6 tunnel tag should be unique in one BS or ASN-EP, and one ASN-EP may be connected to multiple BSs, which results in an R6 tunnel on an ASN-EP. The number will be very large, eventually exceeding the number that the R6 tunnel tag can represent. When the MSS switches, such a large number of tunnels need to be removed and built, and there are big problems in terms of device performance and switching efficiency.

When the R6 tunnel is established based on the MSS/SS or the BS, the R6 tunnel can be used to distinguish the internal path of the ASN, which greatly reduces the R6 tunnel and simplifies the burden of maintaining the ASN backhaul. As the number of tunnels decreases, the efficiency is significantly improved when the MSS switches. However, if QoS (Service Quality Assurance) in the ASN needs to be implemented according to the traffic classification, the corresponding traffic classification must be implemented in the BS and the ASN-EP, and then the QoS operation is performed. Repeating the same flow classification work within the ASN greatly reduces the efficiency of functional entities within the ASN. Summary of the invention

The object of the present invention is to provide a data transmission method, system and device, which can greatly reduce the number of tunnels between the BS and the EP, reduce the burden of the ASN backhaul maintenance tunnel, and improve the switching efficiency of the wireless terminal, while avoiding repeated repetition in the ASN. Flow classification work, improved within the ASN Functional entity work efficiency.

In order to achieve the above object, a data transmission method provided by the present invention includes: establishing a tunnel between a base station BS and an enforcement point EP according to a wireless terminal;

The sender determines the flow classification identifier information of the data to be transmitted in the tunnel, and transmits the data and the traffic classification identifier information to the receiving end through a tunnel between the BS and the EP;

The receiving end performs corresponding stream operations on the data received from the tunnel according to the flow classification identifier information.

The technical solution of the following method is an optional technical solution.

The tunnel between the BS and the EP is: a single layer tunnel or a double layer tunnel;

When the tunnel between the BS and the EP is a double-layer tunnel, the outer tunnel is a tunnel established according to the wireless terminal, and the inner tunnel is a tunnel established according to the traffic classification.

The tunnel between the BS and the EP is a single-layer tunnel, the transmitting end is an EP, the receiving end is a BS, and the transmitting end of the transmitting end to the receiving end includes:

The EP receives the data transmitted by the CSN through the tunnel, and determines the tunnel identification information, and determines the tunnel identification information between the BS and the EP corresponding to the tunnel identifier according to the preset tunnel correspondence relationship, and generates a traffic classification identifier corresponding to the data. Information

The EP transmits the flow classification identifier information and data together to the BS through the corresponding tunnel according to the determined tunnel identification information between the BS and the EP;

The preset tunnel correspondence relationship is: a tunnel identifier information between the BS and the EP, and a correspondence between the EP and the tunnel identifier information between the EP and the connection service network CSN.

The tunnel between the BS and the EP is a single-layer tunnel, the transmitting end is a BS, the receiving end is an EP, and the transmitting end of the transmitting end to the receiving end includes:

The BS determines tunnel identification information between the BS and the EP corresponding to the data that needs to be sent to the EP, and generates flow classification identifier information corresponding to the data;

The BS transmits the flow classification identification information and the data together to the EP through the corresponding tunnel according to the determined tunnel identification information between the BS and the EP. The method further includes:

The EP receives the data and the traffic classification identifier information transmitted by the BS through the tunnel, and determines the tunnel identification information between the EP and the CSN corresponding to the tunnel identification information according to the preset tunnel correspondence relationship;

The EP determines a transmission tunnel of the data according to the determined tunnel identification information between the EP and the CSN; the preset tunnel correspondence is: tunnel identification information between the BS and the EP, and a tunnel between the EP and the connection service network CSN The correspondence between the identification information.

The sending end is an EP, the receiving end is a BS, and the process of transmitting the sending end to the receiving end includes:

The EP receives the data transmitted by the CSN through the tunnel, and determines the tunnel identification information. The EP determines the outer tunnel identification information corresponding to the tunnel identification information according to the preset tunnel correspondence, and generates the inner tunnel identification information corresponding to the data. ;

The EP transmits the data to the BS through the corresponding outer tunnel and inner tunnel according to the outer tunnel identification information and the inner tunnel identification information;

The preset correspondence relationship is: an outer tunnel identification information, and a correspondence relationship between the tunnel identification information between the EP and the CSN;

And the flow operation process of the receiving end includes:

The BS determines the flow classification identifier information according to the inner tunnel identification information of the data received by the BS, and performs corresponding flow operations on the data received according to the flow classification identifier information.

The sending end is a BS, the receiving end is an EP, and the sending end sends the sending end to the receiving end:

The BS determines the outer tunnel identification information corresponding to the data that needs to be sent to the EP, and generates inner tunnel identification information corresponding to the data;

The BS transmits the data to the EP through the corresponding outer tunnel and inner tunnel according to the outer tunnel identification information and the inner tunnel identification information.

The flow operation process of the receiving end includes:

The EP receives the data transmitted by the BS through the outer tunnel and the inner tunnel, and determines the data. Layer tunnel identification information and corresponding traffic classification identifier information, and determining outer tunnel identification information of the data;

Determining tunnel identification information between the EP and the CSN corresponding to the outer tunnel identification information according to the preset tunnel correspondence relationship;

The EP determines a transmission tunnel of the data according to the tunnel identification information between the determined EP and the CSN, and performs corresponding flow operations on the data received according to the received traffic classification identification information; the preset correspondence is: Correspondence between the outer tunnel identification information and the tunnel identification information between the EP and the CSN.

The tunnel between the BS and the EP, the tunnel between the EP and the CSN is established by the decision point DP.

When the tunnel between the BS and the EP is a single-layer tunnel, and multiple BSs share an EP, and the ASN bearer network does not support tunnel switching, the tunnel identification information in each BS sharing an EP is unique; or

When the tunnel between the BS and the EP is a single-layer tunnel, and multiple BSs share an EP, and the ASN bearer network supports tunnel switching, the tunnel identification information in each BS sharing an EP may not be unique; or

When the tunnel between the BS and the EP is a double-layer tunnel, and multiple BSs share an EP, and the ASN bearer network does not support tunnel switching, the identification information of each outer tunnel in each BS sharing an EP is unique; or

When the tunnel between the BS and the EP is a double-layer tunnel, and multiple BSs share an EP, and the ASN bearer network supports tunnel switching, the tunnel identification information in each BS sharing an EP may not be unique.

The present invention further provides a data transmission system, comprising: a base station BS and an enforcement point EP, a tunnel between the BS and the EP is established according to the wireless terminal, the BS is provided with a determined flow classification module and a sending module, and the EP is provided with a receiving Module and flow operation module;

Determining a flow classification module: determining flow classification identification information of data to be transmitted in the tunnel, and outputting; a sending module, configured to: send the data and the traffic classification identifier information to a peer end by using a tunnel between the BS and the EP;

The receiving module is configured to: receive the traffic classification identifier information, and the data sent by the peer end through the tunnel; the flow operation module: configured to perform corresponding flow operations on the data received by the receiving module according to the flow classification identifier information received by the receiving module.

The BS is further provided with a receiving module and a stream operating module, and the EP is further provided with a determining stream sorting module and a sending module.

The technical solution of the following system is an optional technical solution.

A storage module is also provided in the EP;

The storage module is configured to store the tunnel identification information between the BS and the EP and the correspondence between the EP and the tunnel identification information between the connection service network CSN;

The transmitting module in the EP determines the tunnel identification information between the BS and the EP corresponding to the data transmitted by the CSN through the tunnel according to the corresponding relationship stored in the storage module.

The present invention further provides a base station device, wherein a tunnel is set between the base station device BS and the enforcement point EP, and a tunnel between the BS and the EP is established according to the wireless terminal, and the determined flow classification module, the sending module, and the receiving are set in the BS. Module and flow operation module;

Determining a flow classification module: determining flow classification identification information of data to be transmitted in the tunnel, and outputting;

a sending module, configured to: send the data and the traffic classification identifier information to a peer end by using a tunnel between the BS and the EP;

The receiving module is configured to: receive the traffic classification identifier information, and the data sent by the peer end through the tunnel; the flow operation module: configured to perform corresponding flow operations on the data received by the receiving module according to the flow classification identifier information received by the receiving module. The present invention also provides an execution point device. The execution point device EP and the BS are provided with a tunnel, and the tunnel between the BS and the UI is established according to the wireless terminal, and the EP is provided with the determined flow classification module, the sending module, and the receiving. Module and flow operation module;

According to the description of the foregoing technical solution, since the present invention establishes a tunnel between the BS and the EP according to the wireless terminal, the number of tunnels between the BS and the EP in the present invention is only related to the number of wireless terminals, which greatly reduces the ASN bearer network pair. The maintenance and processing burden of the R6 tunnel simplifies the path search operation of the internal functional entity of the ASN. The sender notifies the receiver of the flow classification and identification information of the data, so that the receiving end such as the BS or the EP can directly respond to the notified traffic classification identifier information. The flow operation allows the functional entities in the ASN to perform only one flow classification work, which avoids the process of repeating the flow classification work by each functional entity in the ASN.

When the tunnel between the BS and the EP adopts a double-layer tunnel, the outer tunnel in the present invention is related to the path between the BS-EP-CSN, and the inner tunnel is related to the traffic classification, so that the functional entities inside the ASN can be externally The layer tunnel identification information is used to perform the fast path search, so that the functional entity in the ASN can implement the subdivision of the user service flow according to the inner tunnel identification information. When the inner tunnel identification information corresponds to the QoS of the wireless air interface, the entire access network is ensured. Partial QoS consistency.

Since the functional entity inside the ASN can quickly find a path to different CSNs through the outer tunnel, the present invention can be well applied to the architecture of the multiple ASN shared ASN; when the ASN bearer network supports tunnel switching, each The tunnel identification information in the BS may not be unique. In this case, the DP can only configure the exchange of tunnel identification information of the ASN bearer network, EP, BS. The tunnel identification information can be allocated by itself, which reduces the working complexity of the tunnel between the BS and the EP. Therefore, the technical solution provided by the present invention can reduce the burden of maintaining the tunnel of the ASN bearer network and improve the wireless terminal cutting. Efficiency, the purpose of improving the efficiency of functional entities within ASN. BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic diagram of the overall reference architecture of a WiMAX network.

2 is an ASN functional decomposition structure diagram;

Figure 3 is a schematic diagram of a protocol hierarchy in a WiMAX basic networking;

4 is a schematic diagram of an R6 outer tunnel according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of the R6 inner and outer tunnels transmitting data on the ASN bearer network according to an embodiment of the present invention. Mode for carrying out the invention

The main technical content of the present invention is: establishing a tunnel between a BS (base station) and an EP (execution point) according to the wireless terminal, that is, the tunnel between the BS and the EP in the present invention is established for the wireless terminal. The sending end determines the flow classification identifier information of the data to be transmitted in the tunnel, and transmits the data to the receiving end through the tunnel between the BS and the EP, and simultaneously informs the receiving end of the traffic classification and identification information, and the receiving end according to the receiving end The flow classification identifier information notified by the sender performs corresponding stream operations on the data received from the tunnel.

The technical solution of the data transmission method provided by the present invention is further described below based on the core idea of the present invention.

The invention first needs to establish a tunnel between the BS and the EP according to a wireless terminal such as an MSS, SS. After the tunnel is established, the BS and the EP need to notify the peer end of the traffic classification and identification information of the data when the data is transmitted through the tunnel. The peer can directly determine the received identifier according to the notified traffic classification identifier. The data is subjected to corresponding gating, QoS, etc., which are independent of the path. Stream operation. Since the number of tunnels between the BS and the EP is only related to the number of wireless terminals in the present invention, the present invention can reduce the number of tunnels between the BS and the EP, reduce the burden on the ASN backhaul (ASN bearer network), and improve the tunnel burden. When the wireless terminal switches efficiency, the traffic classification of the functional entities in the ASN is avoided, and the working efficiency of the functional entities in the ASN is greatly improved.

The tunnel established between the BS and the EP in the present invention may be a single layer tunnel or a double layer tunnel. When the tunnel between the BS and the EP is a single-layer tunnel, the single-layer tunnel identification information and the tunnel identification information between the EP and the CSN are correspondingly configured to facilitate fast routing of data transmission between the BS and the EP-CSN. In this way, when the EP receives the data transmitted by the CSN through the tunnel between the CSN and the CSN, the tunnel identification information can be indexed to the corresponding tunnel identification information between the EP and the BS according to the tunnel identification information, so as to implement fast routing of the ASN internal data transmission. . When the EP transmits data according to the tunnel identification information between the EP and the BS to which it is indexed, it is also required to generate the flow classification identification information of the data, and the flow classification identification information and the data are transmitted to the BS through the corresponding tunnel. At this time, the BS does not need to perform the traffic classification work, and directly performs a series of path-independent flow operations such as gating and QoS according to the received traffic classification identification information, and then continues to transmit the data. Such as transmission to a wireless terminal, etc. When the BS needs to transmit data received by the wireless terminal to the EP, the tunnel identification information between the EP and the BS corresponding to the data is determined, and the traffic classification identifier information of the data is generated, and the flow is generated. The classification identification information and the data are transmitted to the EP through the corresponding tunnel. The EP does not need to perform the traffic classification work, and directly performs a series of path-independent flow operations such as gating and QoS according to the traffic classification identification information received by the EP, and the EP identifies the tunnel identification information according to the received data. The tunnel identification information between the corresponding EP and the CSN can be indexed to implement fast routing of ASN data transmission. The traffic classification identification information here is equivalent to the inner tunnel identification information in the double-layer tunnel described below.

When the tunnel between the BS and the EP is a double-layer tunnel, the outer tunnel of the present invention may be referred to as R6 OUTER TU ^EL (R6 outer tunnel), and the outer tunnel is mainly used to identify the path, and therefore, the outer layer is established. When tunneling, the principle related to the path is mainly adopted. The path here refers to the path of the BS-EP-CSN. In the ASN, the data transmission of the outer tunnel of the present invention, and the path between the ASN and the CSN The one-to-one correspondence of the paths is as shown in FIG.

In Figure 4, the path of the BS-EP-CSN is represented by PATH, which is mainly composed of MIP TUNNEL (Mobile IP Tunnel) between R6 OUTER TUNNEL and EP-CSN between BS-EP, R6 OUTER TUTWEL and path. PATH - Correspondence. The establishment of the PATH can be performed by the DP, that is, the establishment of the R6 OUTER TUT EL and the MIP TUNNEL is handled by the DP. EP can quickly exchange R6 OUTER TU >ffiL with MIP TUNNEL via R6 OUTER TUNNEL ID. Thus, with the outer tunnel of the present invention, a fast path lookup inside the ASN can be achieved.

The inner tunnel of the present invention may be referred to as R6 INNER TUNNEL (R6 inner tunnel), and the inner tunnel is mainly used to identify the flow. R6 INNER TUNNEL corresponds to the stream completely, that is, the R6 INNER TUNNEL ID (R6 inner tunnel identification information) corresponds to the flow identification information. The EP can perform a series of path-independent flow operations such as gating, QoS, etc. through the R6 INNER TUNNEL ID.

In the uplink direction, that is, in the BS to EP direction, the BS generates the R6 INNER TLWNEL ID for the data that needs to be sent to the CSN, and the BS transmits the data to the EP through the corresponding R6 OUTER TIMNEL, R6 INNER TUNNEL, and the EP determines the data to be collected. R6 INNER ID, and directly use the R6 INNER TUNNEL ID to index the corresponding stream identification information such as SFID. The EP directly performs the corresponding stream operation according to the stream identification information it indexes. At the same time, the EP determines the R6 OUTER TUNNEL ID of the received data, and determines the MIP TUNNEL corresponding to the R6 OUTER TU EL ID. The EP transmits the data to the CSN according to its determined MIP TUNNEL. Therefore, for the data transmission in the BS-to-EP direction, the present invention can use the R6 INNER TUNNEL ID to perform the function classification of the functional entity in the ASN only once, so that only the BS needs to perform a traffic classification operation to avoid the QoS. The flow classification work carried out by EP improves the working efficiency of EP, and realizes the fast exchange of R6 OUTER TUNNEL and MIP TUNNEL.

In the downlink direction, that is, in the EP to BS direction, the EP receives the data that needs to be sent to the BS and is sent by the CSN through the MIP TUNNEL between the EP and the CSN, and the EP receives the data that is received by the EP and needs to be sent to the BS. R6 INNER TUNNEL ID, at the same time, EP determines its receiving data MIP TUNNEL, and determine the R6 OUTER TUNNEL ID corresponding to the MIP TUNNEL. The EP transmits the data to the BS through the corresponding double-layer tunnel according to the R6 OUTER TUNNEL ID and the R6 INNER TUNNEL ID. The BS determines the R6 INNER TUNNEL ID of the received data, and directly indexes the corresponding stream identification information such as SFID with the R6 INNER TUNNEL ID. The BS directly performs corresponding stream operations according to the stream identification information to which it is indexed. Therefore, for the data transmission from the EP to the BS direction, the present invention can use the R6 INNER TUNNEL ID to enable the functional entity in the ASN to perform only one flow classification work under the premise of guaranteeing QoS, for example, only the EP needs to perform a flow classification work to avoid The flow classification work performed by the BS improves the working efficiency of the BS, and realizes the fast exchange of the R6 OUTER TUNNEL and the MIP TUNNEL.

The data transmission diagram of the inner and outer tunnels in R6 on the ASN backhaul is shown in Figure 5.

In Figure 5, for an ASN with dual-layer tunnel switching capability, R6 INNER TUNNEL can be invisible to ASN Backhaul between BS and ASN-GW, and ASN Backhaul only processes R6 OUTER TUNNEL, so the present invention is applicable to existing ASN Backhaul can be used without any modifications. Therefore, the number of tunnels that need to be maintained by the ASN Backhaul in the present invention is greatly reduced compared to the number of tunnels to be processed in the R6 tunnel scheme according to the flow.

The correspondence between the R6 INNER TUNNEL ID and the traffic classification identifier information on the BS may be: 1 6 1>^1 1! ^ 3⁄41^ The mapping between 10 and 8?10, so that the flow operation is performed within the ASN according to the R6 INNER TUNNEL ID It can guarantee the flow operation related to the air interface in the ASN, such as QoS consistency.

In the present invention, the tunnel identification information, such as the single-layer ramp identification information, the inner tunnel identification information, and the outer tunnel identification information, can be uniformly managed and allocated by the ASN-DP. When the ASN Backhaul does not have the tunnel switching capability, that is, the TUNNEL ID switching function is not supported, the DP should ensure that the tunnel identification information in each BS sharing an EP is unique and does not coincide with each other, that is, when the tunnel between the EP and the BS is a single layer. In the tunnel, the tunnel identification information in the BSs sharing an EP does not coincide with each other. When the tunnel between the EP and the BS is a double-layer tunnel, the outer tunnel identification information of each BS sharing an EP does not coincide with each other; ASN Backhaul has tunnel switching capability, which is shared when TUNNEL ID exchange function is supported. The tunnel identification information in the BSs of the EPs may overlap each other. When the tunnel between the EP and the BS is a single-layer tunnel, the tunnel identification information in each BS sharing an EP may overlap each other. When the tunnel is a double-layer tunnel, the outer tunnel identification information of each BS sharing an EP can be overlapped with each other. At this time, ASN-DP can more easily allocate the TUNNEL ID, that is, the DP can only tunnel to the ASN bearer network. The exchange of identification information is configured, and the tunnel identification information in the EP and BS can be allocated by itself, which can ensure the uniqueness of the R6 OUTER TUNNEL ID on the BS and the ASN-EP, thereby greatly reducing the DP establishment. The working complexity of the tunnel between the BS and the EP.

The outer tunnel and the inner tunnel of the present invention can be implemented by using existing tunnel technologies, such as 802.1Q VLAN, MPLS, GRE, and the like. The inner and outer tunnels of the present invention are independent, that is, the inner and outer tunnels can be implemented by the same tunnel technology, or can be implemented by using different tunnel technologies.

The CSN, the EP, and the BS in the present invention may be one or more, that is, the data transmission method of the present invention can support the networking situation in which multiple CSNs share the ASN, and can also support the networking situation in which multiple ASNs serve a single CSN. It can support the distributed networking architecture of ASN.

The data transmission system provided by the present invention includes: a BS and an EP, a tunnel is set between the BS and the EP, and a tunnel between the BS and the EP is established according to the wireless terminal, that is, the number of tunnels between the BS and the EP is only wireless. The number of terminals is related. The tunnel between the BS and the EP may be a single layer tunnel or a double layer tunnel.

The BS is provided with a determination flow classification module, a transmission module, a reception module, and a flow operation module. The EP is provided with a storage module, a determination flow classification module, a transmission module, a receiving module, and a flow operation module.

When the tunnel between the BS and the EP is a single-layer tunnel, the storage module in the EP is mainly used to store the mapping between the single-layer tunnel identification information between the BS and the EP and the tunnel identification information between the EP and the CSN. In this way, when the EP receives the data transmitted by the CSN through the tunnel between the EP and the CSN, the determined stream classification module in the EP generates the stream classification identifier information of the data, and the sending module in the EP according to the EP and CSN corresponding to the data. The tunnel identification information can be indexed to the EP corresponding to the data. The tunnel identification information between the BSs is sent by the sending module to the BS through the corresponding tunnel according to the tunnel identification information between the EP and the BS to which the traffic classification module is determined. At this time, the BS does not need to perform the traffic classification operation again, and the flow operation module in the BS directly performs a series of path-independent flow operations such as gating and QoS according to the flow classification identification information received by the receiving module in the BS. Then, the data is continuously transmitted, such as to a wireless terminal or the like. Specifically, it is described in the above method.

When the tunnel between the BS and the EP is a single layer tunnel, and the BS needs to transmit the data it receives, such as the data transmitted by the wireless terminal, to the EP, the determined traffic classification module in the BS generates the traffic classification identifier information of the data, and The flow classification identification information is transmitted to a transmission module in the BS. The transmitting module in the BS determines the tunnel identification information between the EP and the BS corresponding to the data, and transmits the stream classification identifier information and the data to the EP through the corresponding tunnel. At this time, the EP does not need to perform the traffic classification work again. The flow operation module in the EP directly performs a series of path-independent flow operations such as gating, QoS, etc. according to the flow classification identification information received by the receiving module in the EP. Moreover, the transmitting module in the EP can index the tunnel identification information between the corresponding EP and the CSN according to the tunnel identification information of the data transmitted by the BS and the corresponding relationship stored in the storage module, thereby realizing the fast transmission of the ASN data. routing. Specifically, it is described in the above method.

When the tunnel between the BS and the EP is a double-layer tunnel, the outer tunnel of the present invention may be referred to as R6 OUTER TUNNEL, and the outer tunnel is mainly used to identify the path. The path here refers to the path between the BS and EP and CSN. The inner tunnel of the present invention may be referred to as R6 INNER TUNNEL (R6 inner tunnel), and the inner tunnel is mainly used to identify the flow.

When the tunnel between the BS and the EP is a double-layer tunnel, and the BS needs to transmit the data it receives, such as data transmitted by the wireless terminal, to the EP, the determined flow identification module in the BS generates R6 for the data that the BS needs to send to the CSN. INNER TUNNEL ID, the transmitting module in the BS transmits the data to the EP via the corresponding R6 OUTER TUNNEL, R6 INNER TUNNEL. The flow operation module in the EP determines the R6 INNER TUNNEL ID of the data received by the receiving module in the EP, and directly uses the R6 INNER TUNNEL ID to index the corresponding flow identification information such as SFID in the storage module. EP The stream operation module in the direct operation performs corresponding stream operations according to the stream identification information to which it is indexed. then,

The transmitting module in the EP determines the R6 OUTER TUNNEL ID of the data transmitted by the BS, and determines the MIP TUNNEL corresponding to the R6 OUTER TUNNEL ID, and the transmitting module in the EP transmits the data to the CSN according to the determined MIP TUNNEL.

When the tunnel between the BS and the EP is a double-layer tunnel, and the EP needs to transmit data received from the CSN to the BS, the determined flow identification module in the EP generates a corresponding R6 INNER TUNNEL ID for the data received by the EP from the CSN. The sending module in the EP determines the MDP TUNNEL of the received data, and determines the R6 OUTER TUNNEL ID corresponding to the MIP TUNNEL according to the corresponding relationship stored in the storage module, and the sending module in the EP sends the data according to the R6 OUTER TUNNEL ID and the R6 INNER TUNNEL ID. Transfer to the BS via the corresponding double-layer tunnel. The flow operation module in the BS indexes the corresponding flow identification information such as SFID according to the R6 INNER TUNNEL ID of the data received by the receiving module in the BS. The flow operation module in the BS directly performs corresponding flow operations according to the flow identification information. Specifically, it is described in the above method.

The base station device and the execution point device provided by the present invention are as described in the above system.

While the invention has been described by the embodiments of the invention, it will be understood that

Claims

Rights request

A data transmission method, comprising:

Establishing a tunnel between the base station BS and the enforcement point EP according to the wireless terminal;

The method according to claim 1, wherein the tunnel between the BS and the EP is: a single layer tunnel or a double layer tunnel;

The method according to claim 1, wherein the tunnel between the BS and the EP is a single layer tunnel, the transmitting end is an EP, the receiving end is a BS, and the transmitting end transmits to the receiving end. The process includes:

The method according to claim 1, wherein the tunnel between the BS and the EP is a single layer tunnel, the transmitting end is a BS, the receiving end is an EP, and the transmitting end transmits to the receiving end. The process includes:

The BS determines the tunnel identification information between the BS and the EP corresponding to the data that needs to be sent to the EP, And generating flow classification identifier information corresponding to the data;

The BS transmits the flow classification identification information and data to the EP through the corresponding tunnel according to the tunnel identification information between the determined BS and the EP.

The method of claim 4, wherein the method further comprises:

The EP receives the data and the traffic classification identifier information transmitted by the BS through the tunnel, and determines the tunnel identification information between the EP and the CSN corresponding to the tunnel identification information according to the preset tunnel correspondence relationship; the EP is determined according to the determined EP and the CSN. The tunnel identification information determines a transmission tunnel of the data. The preset tunnel correspondence relationship is: a tunnel identifier information between the BS and the EP, and a correspondence between the EP and the tunnel identifier information between the EP and the connection service network CSN.

The method according to claim 2, wherein the transmitting end is an EP, the receiving end is a BS, and the transmitting end is transmitted to the receiving end:

The EP receives the data transmitted by the CSN through the tunnel, and determines the tunnel identification information;

The EP determines the outer tunnel identification information corresponding to the tunnel identification information according to the preset tunnel correspondence relationship, and generates inner tunnel identification information corresponding to the data;

And the flow operation process of the receiving end includes:

The method according to claim 2, wherein the transmitting end is a BS, the receiving end is an EP, and the transmitting end is transmitted to the receiving end:

The BS determines the outer tunnel identification information corresponding to the data that needs to be sent to the EP, and generates inner tunnel identification information corresponding to the data; The BS transmits the data to the EP through the corresponding outer tunnel and the inner tunnel according to the outer tunnel identification information and the inner tunnel identification information.

8. The method according to claim 7, wherein the stream operation process at the receiving end comprises:

The EP receives the data transmitted by the BS through the outer tunnel and the inner tunnel, determines the inner tunnel identification information of the data and the corresponding traffic classification identifier information, and determines the outer tunnel identification information of the data;

The method according to claim 1, characterized in that the tunnel between the BS and the EP, the tunnel between the EP and the CSN is established by the decision point DP.

10. The method of claim 1 wherein:

When the tunnel between the BS and the EP is a double-layer tunnel, and multiple BSs share an EP, and the ASN bearer network does not support tunnel switching, the identification information of each outer tunnel in each BS sharing an EP is unique; or When the tunnel between the BS and the EP is a double-layer tunnel, and multiple BSs share an EP, and the ASN bearer network supports tunnel switching, each tunnel identifier information in each BS sharing an EP may not be unique.

A data transmission system, comprising: a base station BS and an enforcement point EP, wherein: the tunnel between the BS and the EP is established according to the wireless terminal, and the determined flow classification module and the sending module are set in the BS, and the EP is set. There are a receiving module and a stream operating module;

The system according to claim 11, wherein: the BS is further provided with a receiving module and a stream operating module, and the EP is further provided with a determining stream sorting module and a sending module.

The system of claim 11, wherein the EP is further provided with a storage module; the storage module: configured to store tunnel identification information between the BS and the EP and a tunnel identifier between the EP and the connection service network CSN Correspondence of information;

The system according to claim 11, wherein the tunnel between the BS and the EP is: a single layer tunnel or a double layer tunnel;

A base station device, wherein a tunnel is set between the base station device BS and an enforcement point EP, The feature is that: the tunnel between the BS and the EP is established according to the wireless terminal, and the BS is provided with the determined flow classification module, the sending module, the receiving module, and the flow operation module;

An execution point device, wherein the execution point device EP and the BS are provided with a tunnel, wherein: the tunnel between the BS and the EP is established according to the wireless terminal, and the EP is configured with the determined flow classification module and the sending module. , a receiving module and a stream operating module;