CN102143602B - Method for realizing circuit switching (CS) domain service in flat and universal mobile telecommunication system (UMTS), system and equipment - Google Patents

Abstract

The embodiment of the invention discloses a method for realizing circuit switching (CS) domain service in a flat and universal mobile telecommunication system (UMTS), a system and equipment. In the UMTS, a base station is connected with a CS domain user surface by an IuCS interface. The method comprises the following steps of: establishing transmission network layer connection with the CS domain user surface by the IuCS interface; and establishing wireless network layer connection with the CS domain user surface on the basis of the transmission network layer connection; and carrying out establishment of CS domain services on the basis of the wireless network layer. By using the embodiment of the invention, in the flattened UMTS network, the eHSPA (evolved high speed packet access) Node B of a core network of the CS domain user surface can be directly connected, so that the connection between the eHSPA Node B and the user surface of an MGW (Media Gateway) or an MSC (Mobile Switching Center) in the CS domain does not need extra transmission network.

Description

Method, system and device for realizing CS domain service in flat UMTS

technical field

The present invention relates to the field of communication technologies, in particular to a method, system and equipment for realizing CS (Circuit Switching, circuit switching) domain services in a flat UMTS (Universal Mobile Telecommunications System, Universal Mobile Communications System).

Background technique

The flattening of the network structure can reduce the level of network nodes, which is the current development trend of mobile networks. For example, WiMax (Worldwide Interoperability for Microwave Access, LTE (Long Term Evolution, long-term evolution), etc. all adopt a flat network structure, and the UMTS network with a non-flat network structure is gradually becoming flat. evolve. The traditional UMTS network structure is shown in Figure 1. The core network part includes MSC (Mobile Switching Center, Mobile Switching Center), SGSN (Serving GPRS Supporting Node, GPRS Service Support Node), GGSN (Gateway GPRS Supporting Node, GPRS Gateway Support Node ), where the MSC is a CS domain node. After the separation of the user plane and the control plane, the MSC is decomposed into two nodes: MSC Server (MSC center) and MGW (Media Gateway). The access network includes RNC (Radio Network Controller, radio network controller) and Node B (base station). In Figure 1, the dotted line is the UserPlane (user plane), and the solid line is the Control Plane (control plane).

The flattening of UMTS network is aimed at the simplification of UTRAN (Universal Terrestrial Radio Access Network, Universal Terrestrial Radio Access Network), which moves the function of RNC node down to NodeB. The simplified UTRAN only has Node B nodes. Node B connects to SGSN and GGSN through the IuPS interface, and connects to MSC Server or MSC through IuCS (control plane only), but only handles the control plane functions and has nothing to do with the MSC user plane functions.

The flat UMTS access network structure is shown in Figure 2, using eHSPA (Evolved High Speed Packet Access, Evolved High Speed Packet Access) Node B, but eHSPA Node B does not support the user plane of the IuCS interface, making the flat UMTS network support CS When domain business (typical business is voice), it must rely on the Iur interface between eHSPA Node B and traditional RNC.

As shown in Figure 3, when establishing CS domain services under the eHSPA Node B coverage area (that is, the flat network coverage area), the eHSPA Node B cannot directly connect to the MGW, so an additional migration process is required to utilize the IuCS between the traditional RNC and the MGW. The interface user plane and the Iur interface between eHSPA Node B and traditional RNC complete the connection of CS domain services.

In the process of realizing the present invention, the inventor found that the prior art has at least the following problems:

In the above method, the eHSPA Node B and the traditional RNC need to complete the complete call connection process of the CS domain service through the modified migration signaling. Therefore, it is necessary to upgrade the software of the traditional RNC on the existing network. This upgrade not only increases the operation and maintenance costs of the operator, but also increases the delay of data packet transmission and reduces the service quality.

Contents of the invention

Embodiments of the present invention provide a method, system and device for implementing CS domain services in a flat UMTS, for providing CS services independently in a flat UMTS.

Embodiments of the present invention provide a method for implementing circuit-switched CS domain services in a flat universal mobile communication system UMTS, in which a base station and a CS domain user plane are connected through an IuCS interface in the UMTS, and the method includes the following steps:

establishing a transport network layer connection with the CS domain user plane through the IuCS interface;

Establishing a radio network layer connection with the CS domain user plane on the basis of the transport network layer connection;

The CS domain service is established on the basis of the wireless network layer.

Embodiments of the present invention also provide a device for implementing CS domain services in UMTS, which is connected to the CS domain user plane in the network through an IuCS interface, including:

a transport network layer connection establishment unit, configured to establish a transport network layer connection with the CS domain user plane through the IuCS interface;

A wireless network layer connection establishing unit, configured to establish a wireless network layer connection with the CS domain user plane through the IuCS interface on the basis of the transport network layer connection established by the transport network layer connection establishing unit;

A service establishing unit, configured to establish a CS domain service on the basis of the wireless network layer connection established by the wireless network layer connection establishing unit.

Embodiments of the present invention also provide a UMTS system, including:

a base station, a CS domain user plane, and a CS domain control plane, the base station is connected to the CS domain user plane through an IuCS interface, and is connected to the CS domain control plane through an IuCS interface,

The base station interacts with the CS domain user plane, establishes a transmission network layer connection and a wireless network layer connection with the CS domain user plane; and communicates with the CS domain user plane on the basis of the wireless network layer connection Establish CS domain services.

Compared with the prior art, the embodiments of the present invention have the following advantages:

In the flat UMTS network, the connection between the eHSPA Node B and the user plane of the MGW or MSC in the CS domain does not require an additional transmission network. Compared with the existing method of connecting CS domain services through RNC, the embodiment of the present invention realizes CS without upgrading the protocol software version of RNC in the traditional UMTS network under the coexistence of traditional UMTS network and flat UMTS network. Domain business, not only greatly saves the operator's cost, but also can reduce transmission delay and improve service quality.

Description of drawings

FIG. 1 is a schematic structural diagram of a traditional UMTS network in the prior art;

FIG. 2 is a schematic structural diagram of a flat UMTS network in the prior art;

FIG. 3 is a schematic diagram of implementing CS domain services in a flat UMTS network in the prior art;

FIG. 4 is a schematic diagram of a flat UMTS network in an embodiment of the present invention;

Fig. 5 is a schematic diagram of the IuCS interface protocol stack in an embodiment of the present invention;

FIG. 6 is a flowchart of a method for implementing CS domain services in a flat UMTS network in an embodiment of the present invention;

FIG. 7 is a schematic diagram of the user plane protocol of the IuCS interface when the DCH is used to carry CS voice in an embodiment of the present invention;

FIG. 8 is a schematic diagram of bearer mapping configuration when DCH is used to bear CS voice in an embodiment of the present invention;

FIG. 9 is a flow chart of establishing a CS voice call when DCH is used to carry CS voice in an embodiment of the present invention;

FIG. 10 is a schematic diagram of an IuCS interface user plane protocol in the downlink direction when HSPA is used to carry CS voice in an embodiment of the present invention;

11 is a schematic diagram of an IuCS interface user plane protocol in the uplink direction when HSPA is used to carry CS voice in an embodiment of the present invention;

FIG. 12 is a flow chart of establishing a CS voice call when HSPA is used to carry CS voice in an embodiment of the present invention;

FIG. 13 is a schematic diagram of bearer mapping configuration in the downlink direction when HSPA is used to bear CS voice in an embodiment of the present invention;

FIG. 14 is a schematic diagram of bearer mapping configuration in the uplink direction when HSPA is used to bear CS voice in an embodiment of the present invention;

Fig. 15 is a schematic structural diagram of equipment implementing CS domain services in UMTS in an embodiment of the present invention.

Detailed ways

An embodiment of the present invention provides a method for implementing CS domain services in a flat UMTS network, and a schematic diagram of a network where it is applied is shown in FIG. 4 . Among them, the eHSPA Node B supports the IuCS interface user plane and directly connects to the MGW in the CS domain. Figure 4 is just an example where eHSPA Node B is connected to one MGW. In actual networking, there is no limit to the number of MGWs that eHSPA Node B can connect to.

For this direct connection mode, the eHSPA Node B needs to support the IuCS interface protocol stack on the IuCS interface. The content of the IuCS interface protocol stack is shown in Figure 5. The functions that eHSPA Node B needs to support are shown in the gray area in Figure 5, which further includes the Transport Network Layer and the Radio Network Layer.

For the transport network layer: if the transport network layer uses IP transmission mode, the transport network control plane (Transport Network Control Plane) function (responsible for the establishment of the user plane AAL2 (ATMAdaptation Layer type 2, ATM adaptation layer type 2) connection is not required , including Q.2630.2, Q.2150.1, MTP3b, SSCF-NNI, SSCOP, AAL5, etc.), and only need to provide user plane functions of the transport network layer (RTP/RTCP*, UDP, IP and data link layer, RTCP* means RTCP is optional); on the contrary, if the transport network layer uses ATM (Asynchronous Transfer Mode, asynchronous transfer mode) transmission mode, it is not only necessary to provide transport network layer user plane functions (AAL2, ATM), but also to provide transport network layer control surface function.

For the wireless network layer: the user plane function of the wireless network layer is IuUP, which uses the transmission function provided by the user plane (AAL2 or RTP) of the transport network layer.

Based on the above descriptions in FIG. 4 and FIG. 5, embodiments of the present invention provide a method for implementing CS domain services in a flat UMTS network, as shown in FIG. 6, specifically including the following steps:

In step s601, the eHSPA Node B is connected to the user plane of the MGW or MSC in the network through the IuCS interface.

When the control plane and user plane of the CS domain core network are separated, the eHSPA Node B and MGW are connected through the IuCS interface; interface connection.

In step s602, the eHSPA Node B establishes a transport network layer connection with the MGW or MSC user plane in the network.

Specifically, the eHSPA Node B interacts with the CS domain control plane through the IuCS interface, and the CS domain control plane sends a radio access bearer allocation message; when the eHSPA Node B receives the radio access bearer allocation message, it communicates with the CS domain user plane Establish a transport network layer connection. The transmission network layer connection includes an Internet Protocol IP transmission mode connection, or an asynchronous transfer mode ATM transmission mode connection. In the IP transmission mode, it is not necessary to provide the transmission network layer control plane functions, but only the transmission network layer user plane functions; in the ATM transmission mode, not only the transmission network layer control plane functions, but also the transmission network layer user plane functions need to be provided.

In step s603, the eHSPA Node B establishes a wireless network layer connection with the MGW or MSC user plane in the network on the basis of the transmission network layer connection. Specifically, the eHSPA Node B can interact with the CS domain user plane through the Iu interface user plane IuUP protocol to establish a wireless network layer connection.

In step s604, the eHSPA Node B and the MGW or MSC user plane in the network complete the establishment of the CS service on the wireless network layer connection.

The voice service is taken as an example below to describe the method for realizing CS domain service in the flat UMTS network in the embodiment of the present invention. The CS domain is an architecture in which the core network control plane and the user plane are separated, that is, the MGW is a separate entity.

The current voice service is the most important service in the CS domain service, which further includes AMR (Adaptive Multi-Rate, adaptive multi-rate) and AMR-WB (Wideband AMR, broadband AMR). Here, voice services are taken as an example to illustrate the implementation of CS domain services by eHSPA Node B in the case of supporting the IuCS user plane. This method is also suitable for other CS domain services. CS voice can be carried by DCH (Dedicated Channel, Dedicated Channel) or HSPA (High Speed Packet Access, High Speed Packet Access). The following describes the two types of carrying conditions respectively.

(1) For the case of using DCH to carry CS voice:

For voice in the CS domain, the traditional air interface bearer method is to use a dedicated channel to carry voice, where the transmission channel is DCH, and the physical channel is DPCH (Dedicated Physical Channel, Dedicated Physical Channel). The layer 2 RLC (Radio Link Control, radio link control) mode uses the transparent mode RLC-TM (Transparent Mode, transparent mode). Taking the user transport layer as ATM transmission as an example, the IuCS interface user plane protocol at this time is shown in Figure 7. Among them, the control function in eHSPANode B (such as the radio resource control RRC function) interacts with the UE through the RLC-TM protocol, interacts with the MGW through the IuUP protocol, and performs mutual conversion between the RLC-TM protocol and the IuUP protocol. Through this process, the UE Establishment of voice services in the CS domain with the MGW.

When DCH is used to carry CS voice, the CS voice call establishment process is shown in Figure 8, including the following steps:

In step s801, the UE sends an RRC connection request message (RRC ConnectionRequest) to the eHSPA Node B.

In step s802, the eHSPA Node B sends an RRC connection establishment message (RRC ConnectionSetup) to the UE.

In step s803, the UE sends an RRC connection setup complete message (RRCConnection Setup Complete) to the eHSPA Node B.

In step s804, the UE sends an initial direct transfer message (Initial Direct Transfer) to the eHSPA Node B for requesting establishment of a CS service such as a voice service.

In step s805, the eHSPA Node B sends an initial UE message (Initial UE Message) based on the RANAP protocol to the MSC Server (the control plane entity of the CS domain).

In step s806, steps of authentication, security command and call establishment are performed between UE and MSC Server.

In step s807, the MSC Server sends a RAB (Radio Access Bear, radio access bearer) assignment request (RAB Assignment) based on the RANAP protocol to the eHSPA Node B.

Step s808, in the ATM transmission mode, the eHSPA Node B sends an establishment request (Establishment Request) based on Q.2630.2 to the MGW.

Step s809, in the ATM transmission mode, the MGW sends an establishment confirmation (Establishment Confirm) based on Q.2630.2 to the eHSPA Node B. In the IP transmission mode, steps s808 and s809 are not required.

In step s810, the eHSPA Node B sends an initialization message (Initialization) based on the IuUP protocol to the MGW.

In step s811, the MGW sends an initialization response message (Initialization Ack) based on the IuUP protocol to the eHSPA Node B.

In step s812, the eHSPA Node B sends a radio bearer setup (Radio Bearer Setup) message to the UE to establish the CS voice carried by the DCH.

In step s813, the UE sends a radio bearer setup complete (Radio Bearer SetupComplete) message to the eHSPA Node B.

In step s814, the HSPA Node B sends a RANAP-based RAB assignment response (RAB Assignment Response) to the MSC Server.

Step s815, the UE and the MSC Server carry out relevant message exchange (such as warning Alerting), the call establishment confirmation step, and the CS call establishment between the UE and the MSC Server is completed.

Step s816, eHSPA Node B interacts with the UE through the RLC-TM protocol, interacts with the MGW through the IuUP protocol, and converts the data based on the RLC-TM protocol and the data based on the IuUP protocol, and realizes the connection between the UE and the MGW through this process Transmission of voice service data in the CS domain.

When using DCH to carry CS voice, the channel mapping configuration between UE and eHSPA Node B is shown in Figure 9. Wherein, the transmission channel is DCH, and the logical channel is DTCH (Dedicated Traffic Channel, dedicated traffic channel). Different business streams realize uplink and downlink of service streams through DPCH, MAC-d and RLC-TM.

(2) For the case of using HSPA to carry CS voice:

The use of HSPA means that the downlink uses HS-DSCH (High Speed Downlink Shared Channel, high-speed downlink shared channel), that is, HSDPA to carry voice, and the uplink uses E-DCH (Enhanced Dedicated Channel, Enhanced Dedicated Channel), that is, HSUPA to carry voice. When HSPA is used to carry CS voice, the RLC of layer 2 can use RLC-UM (Unacknowledged Mode, unacknowledged mode) mode, and can also use other modes.

Taking ATM transmission as an example, see Figure 10 for the IuCS interface user plane protocol in the downlink direction, and Figure 11 for the IuCS interface user plane protocol in the uplink direction. The difference lies in the protocol of the MAC layer. Among them, the eHSPA Node B interacts with the UE through the PDCP (Packet Data Convergence Protocol) protocol, interacts with the MGW through the IuUP protocol, and performs mutual conversion between the PDCP protocol and the IuUP protocol. Through this process, the communication between the UE and the MGW is realized. Establishment of CS domain voice services in uplink and downlink directions.

When HSPA is used to carry CS voice, the CS voice call establishment process is shown in Figure 12, including the following steps:

The contents of steps s1201 to s1216 are mostly the same as the contents of steps s801 to s816 above, and the contents of steps s1201 to s1216 will not be described in detail here. The difference is that the CS voice service between the UE and the eHSPA Node B is carried by HSPA; after the CS call connection is established, the eHSPA Node B interacts with the UE through the PDCP protocol, interacts with the MGW through the IuUP protocol, and interacts with the data based on the PDCP protocol. The data of the IuUP protocol is converted to each other, and through this process, the transmission of voice service data in the CS domain between the UE and the MGW is realized.

When HSPA is used to carry CS voice, the downlink channel mapping configuration between UE and eHSPA Node B is shown in Figure 13. The transport channel is HS-DSCH, the logical channel is DTCH (Dedicated Traffic Channel, dedicated traffic channel), and different service flows are realized through PHY, MAC-hs, MAC-e, RLC-UM and PDCP.

When HSPA is used to carry CS voice, the uplink channel mapping configuration between UE and eHSPA Node B is shown in Figure 14. The transport channel is E-DCH, the logical channel is DTCH, and different service flows are uplinked through PHY, MAC-es/MAC-e, MAC-d, RLC-UM, and PDCP.

By using the method provided by the embodiment of the present invention, in the flat UMTS network, the eHSPA Node B that can be directly connected to the CS domain user plane core network is realized, so that the eHSPA Node B and the user plane of the MGW or MSC in the CS domain The connection does not require an additional transmission network. Compared with the existing method of connecting CS domain services through the RNC, the embodiment of the present invention has no impact on the traditional UMTS network structure, and does not require upgrading the RNC in the traditional UMTS network in the case of the coexistence of the traditional UMTS network and the flat UMTS network The CS domain service can be realized with the latest protocol software version, which not only greatly saves the cost of the operator, but also reduces the transmission delay and improves the service quality compared with the existing technology relying on the Iur interface.

Embodiments of the present invention also provide a device for implementing CS domain services in UMTS. The device is connected to the CS domain user plane in the network through an IuCS interface. Specifically, it may be an enhanced high-speed packet access base station eHSPA NodeB, as shown in FIG. 15 , include:

A transport network layer connection establishing unit 10, configured to establish a transport network layer connection with the CS domain user plane through the IuCS interface;

A wireless network layer connection establishing unit 20, configured to establish a wireless network layer connection with the CS domain user plane through the IuCS interface on the basis of the transport network layer connection established by the transport network layer connection establishing unit;

The service establishing unit 30 is configured to establish a CS domain service on the basis of the wireless network layer connection established by the wireless network layer connection establishing unit. The service establishment unit 30 further includes:

The first service establishment subunit 31 is configured to interact with the CS domain user plane through the IuUP protocol, and exchange data based on the IuUP protocol received from the CS domain user plane and data based on the RLC-TM protocol received from the user terminal side Switching to realize the establishment of CS domain voice services in the uplink and downlink directions with the CS domain user plane; and/or

The second service establishment subunit 32 is configured to interact with the CS domain user plane through the IuUP protocol, and perform mutual conversion of data based on the IuUP protocol received from the CS domain user plane and data based on the PDCP protocol received from the user terminal side, Realize the establishment of CS domain voice services in uplink and downlink directions between CS domain user planes.

Embodiments of the present invention also provide a UMTS system, including:

The base station is connected to the CS domain user plane through the IuCS interface, and is connected to the CS domain control plane, and is used to interact with the CS domain user plane and the CS domain control plane, and establish a transmission network layer connection with the CS domain user plane and a wireless network layer connection; establishing a CS domain service with the CS domain user plane on the basis of the wireless network layer connection. The base station may be an enhanced high-speed packet access base station eHSPANodeB, the structure of which is shown in FIG. 15 .

The CS domain user plane is connected with the base station through the CS domain user plane through the IuCS interface, and is used to establish a transport network layer connection and a wireless network layer connection with the base station, and establish a CS service with the base station.

The CS domain control plane is connected to the base station, and is configured to interact with the base station and establish a connection with the base station.

By using the system and equipment provided by the embodiments of the present invention, in a flat UMTS network, the eHSPANode B that can directly connect to the CS domain user plane core network is realized, so that the eHSPANode B and the user plane of the MGW or MSC in the CS domain The connection does not require an additional transmission network. Compared with the existing method of connecting CS domain services through the RNC, the embodiment of the present invention has no impact on the traditional UMTS network structure, and does not require upgrading the RNC in the traditional UMTS network in the case of the coexistence of the traditional UMTS network and the flat UMTS network The CS domain service can be realized with the latest protocol software version, which not only greatly saves the operator's cost; at the same time, compared with the existing technology relying on the Iur interface, it will reduce the transmission delay and improve the service quality.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is a better implementation Way. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions to make a The station device executes the methods described in various embodiments of the present invention.

The above disclosures are only a few specific embodiments of the present invention, however, the present invention is not limited thereto, and any changes conceivable by those skilled in the art shall fall within the protection scope of the present invention.

Claims (9)

1. realize the method for circuit switching (CS) territory business in a flat universal mobile telecommunications system UMTS, it is characterized in that, in UMTS, base station is connected by the IuCS interface with CS territory user's face, said method comprising the steps of:

Setting up transport network layer by described IuCS interface with described CS territory user's face is connected; Wherein, when CS domain core net chain of command and user's face are separation architecture, by the IuCS interface, with media gateway MGW, be connected; At CS domain core net chain of command and user's face, when not separating framework, by the IuCS interface, with user's face of moving exchanging center MSC, be connected;

Setting up wireless network layer with described CS territory user's face on the basis connected at described transport network layer is connected;

Carry out the foundation of CS territory business on the basis of described wireless network layer, wherein, when described CS territory business is while using the CS speech business of dedicated channel DCH transmission, the foundation of described CS territory business specifically comprises: the data based on the IuUP agreement that receive from CS territory user's face and the data based on wireless link control transparent mode RLC-TM agreement that receive from subscriber terminal side are changed mutually to the foundation of the CS territory speech business of uplink and downlink direction between realization and CS territory user's face; When described CS territory business accesses the CS speech business of HSPA transmission for the use high-speed packet, the foundation of described CS territory business specifically comprises: the data to the data based on the IuUP agreement that receive from CS territory user's face and the group-based data centralization agreement PDCP agreement received from subscriber terminal side are changed mutually, realize the foundation of the CS territory speech business of uplink and downlink direction between the user's face of CS territory.

2. realize as claimed in claim 1 the method for CS territory business in UMTS, it is characterized in that,

When CS domain core net chain of command and user's face are separation architecture, described CS territory mask user body is media gateway MGW;

At CS domain core net chain of command and user's face when not separating framework, user's face that described CS territory mask user body is moving exchanging center MSC.

3. realize as claimed in claim 1 the method for CS territory business in UMTS, it is characterized in that, describedly set up by described IuCS interface and described CS territory user's face the step that transport network layer is connected and specifically comprise:

Mutual by described IuCS interface and CS territory chain of command, receive the RAB assignment messages that described CS territory chain of command sends;

While receiving described RAB assignment messages, set up transport network layer with described CS territory user's face and be connected.

4. realize as claimed in claim 1 the method for CS territory business in UMTS, it is characterized in that, set up with described CS territory user's face the step that wireless network layer is connected on the described basis connected at described transport network layer and specifically comprise:

Undertaken alternately by Iu User Plane IuUP agreement and described CS territory user's face, set up wireless network layer and connect.

5. realize as claimed in claim 1 the method for CS territory business in UMTS, it is characterized in that, described CS territory business is while using the CS speech business of dedicated channel DCH transmission, in uplink and downlink direction and mutual the used transmission channel of user terminal, be dedicated channel DCH, the logic channel used is Dedicated Traffic Channel DTCH.

6. realize as claimed in claim 1 the method for CS territory business in UMTS, it is characterized in that, when described CS territory business accesses the CS speech business of HSPA transmission for the use high-speed packet, at down direction and mutual the used transmission channel of user terminal, be high speed downlink shared channel HS-DSCH, the logic channel used is Dedicated Traffic Channel DTCH; At up direction and mutual the used dedicated channel E-DCH of transmission channel for strengthening of user terminal, the logic channel used is Dedicated Traffic Channel DTCH.

7. an equipment of realizing CS territory business in UMTS, is characterized in that, described equipment is connected by the IuCS interface with CS territory user's face in network, and described equipment comprises:

Transport network layer connects sets up unit, for by described IuCS interface, with described CS territory user's face, setting up transport network layer, is connected; Wherein, when CS domain core net chain of command and user's face are separation architecture, by the IuCS interface, with media gateway MGW, be connected; At CS domain core net chain of command and user's face, when not separating framework, by the IuCS interface, with user's face of moving exchanging center MSC, be connected;

Wireless network layer connects sets up unit, for connect the basis of setting up the transport network layer connection of setting up unit at described transport network layer, sets up wireless network layer by described IuCS interface with described CS territory user's face and is connected;

Business is set up unit, for connect the basis of setting up the wireless network layer connection of setting up unit at described wireless network layer, carries out the foundation of CS territory business, and wherein, described business is set up unit and further comprised:

The first business is set up subelement, change mutually the foundation of the CS territory speech business of uplink and downlink direction between realization and CS territory user's face for the data based on the IuUP agreement to receiving from CS territory user's face and from the data based on the RLC-TM agreement of subscriber terminal side reception; And/or

The second business is set up subelement, change mutually for the data based on the IuUP agreement to receiving from CS territory user's face and from the data based on the PDCP agreement of subscriber terminal side reception, realize the foundation of the CS territory speech business of uplink and downlink direction between the user's face of CS territory.

8. realize as claimed in claim 7 the equipment of CS territory business in UMTS, it is characterized in that, realize in described UMTS that the equipment of CS territory business is specially enhancing high-speed packet access base station eHSPANodeB.

9. a UMTS system, is characterized in that, comprising: base station, CS territory user's face and CS territory chain of command, and described base station is connected by the IuCS interface with CS territory user's face, and is connected by the IuCS interface with CS territory chain of command,

Described base station and described CS territory user's face are mutual, and foundation is connected and the wireless network layer connection with the transport network layer between the user's face of described CS territory; And carry out the foundation of CS territory business with described CS territory user's face on the basis connected at described wireless network layer, wherein, when described CS territory business is while using the CS speech business of dedicated channel DCH transmission, the foundation of described CS territory business specifically comprises: the data based on the IuUP agreement that receive from CS territory user's face and the data based on wireless link control transparent mode RLC-TM agreement that receive from subscriber terminal side are changed mutually to the foundation of the CS territory speech business of uplink and downlink direction between realization and CS territory user's face; When described CS territory business accesses the CS speech business of HSPA transmission for the use high-speed packet, the foundation of described CS territory business specifically comprises: the data to the data based on the IuUP agreement that receive from CS territory user's face and the group-based data centralization agreement PDCP agreement received from subscriber terminal side are changed mutually, realize the foundation of the CS territory speech business of uplink and downlink direction between the user's face of CS territory.

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