WO2012055239A1

WO2012055239A1 - Method for controlling enhanced dedicated channel congestion and system thereof

Info

Publication number: WO2012055239A1
Application number: PCT/CN2011/075098
Authority: WO
Inventors: 潘凤艳
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-10-25
Filing date: 2011-06-01
Publication date: 2012-05-03
Also published as: CN102457898A

Abstract

A method for controlling Enhanced Dedicated Channel (E-DCH) congestion in enhanced CELL Forward Access Channel (CELL-FACH) state is provided in the present invention. The method includes: in enhanced CELL-FACH state, after acquiring a E-DCH data frame, a network control network element determines whether congestion is occurred according to Frame Sequence Number (FSN) and/or SubFrameNo and Common Frame Number (CFN) in the E-DCH data frame, and informs a Base Station (BS) the congestion state; the BS adjusts the uplink data transmission amount carried in the E-DCH according to the congestion state. A system for controlling E-DCH congestion in enhanced CELL-FACH state is also provided in the present invention. In the present invention, in CELL-FACH state, a Control Radio Network Controller (CRNC) feedbacks congestion state carried in the uplink E-DCH of Iub interface to a Node B, or a Serving Radio Network Controller (SRNC) feedbacks congestion state carried in the uplink E-DCH of Iub interface to a Drift Radio Network Controller (DRNC) and retransmits to the Node B. The uplink E-DCH data transmission amount of Iub/Iur interface in the Node B is guided. The transmission resources of Iub/Iur interface are fully and efficiently utilized.

Description

Method and system for enhancing dedicated channel congestion

The invention relates to an enhanced dedicated channel (E-DCH) congestion control technology for enhancing a cell forward access channel (CELL_FACH, CELL Forward Access Channel) state, and particularly relates to an enhanced control for enhancing dedicated channel congestion in a CELL_FACH state. Method and system. Background technique

With the continuous development of the third generation of mobile communication, based on the high-speed shared downlink physical access (HSDPA, High Speed Downlink Packet Access) technology and high-speed shared uplink physical access (HSUPA, High Speed UPlink Packet Access) technology, HSPA+ technology, its purpose is to improve data transfer efficiency and reduce latency. In this technique, it is proposed to enhance the CELL_FACH state, and it is expected that the downlink data of the state is carried on the High Speed-Downlink Shared Channel (HS-DSCH), and the uplink data is carried in the enhanced dedicated channel (E). -DCH, Enhanced Dedicated Channel), which can enhance the data transmission performance of this state, so that it can obtain a smaller transmission delay and a higher transmission rate.

In the enhanced CELL_FACH state, the Iub/Iur port transmission bearer is pre-established. As the number of users increases, the transmission bandwidth is likely to be limited, resulting in data transmission loss and data transmission delay congestion. Therefore, for the Iub interface downlink HS-DSCH transmission, the 3GPP TS 25.435 protocol specifies that the Control Radio Network Controller (CRNC) carries the Frame Sequence Number (FSN) and the delay in the HS-DSCH Type 2 frame. The reference time (DRT, Delay Reference Timing) information is used by the Node B (NodeB) for congestion detection, and the NodeB passes the HS-DSCH capability allocation frame to pass the congestion state. Knowing to the CRNC, guiding the data transmission of the CRNC, completing the congestion control in the downlink direction of the lub port; For the downlink-HS-DSCH transmission of the Iur interface, the 3GPP TS 25.425 protocol specifies that the Serving Radio Network Controller (SRNC) is in the HS - The DSCH type 2 frame carries the FSN and DRT information for the DRNC (Driving Radio Network Controller) to perform congestion detection, and the DRNC notifies the SRNC of the congestion status through the HS-DSCH capability allocation frame, thereby guiding the SRNC data transmission. , Complete the congestion control in the downstream direction of the Iur port. However, for the enhanced E-DCH transmission of the Iub/Iur interface in the CELL_FACH state, the current protocol does not specify the relevant congestion control strategy. Summary of the invention

In view of this, the main object of the present invention is to provide a control method and system for enhancing uplink congestion of a dedicated channel in a CELL_FACH state.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

A control method for enhancing dedicated channel congestion includes:

In the enhanced CELL_FACH state, after the network control network element acquires the enhanced dedicated channel (E-DCH) data frame, according to the frame sequence number (FSN) in the E-DCH data frame, and/or the subframe number (SubFrameNo) And the public frame number (CFN) determines whether congestion is present, and notifies the base station of the congestion status;

The base station adjusts an uplink data transmission amount carried by the E-DCH according to the congestion state.

Preferably, the network control network element is a Control Radio Network Controller (CRNC).

Preferably, the network control network element determines whether the congestion is specifically:

Whether the CRNC continuously determines whether the lub port transmission bearer has frame loss according to whether the FSN continuously determines; and/or determines whether the lub port transmission bearer has a frame delay according to the CFN, the subframe number, and the radio network controller frame number (RFN). The lub port transmission bearer has neither frame loss nor frame delay, and the lub port transmission bearer is not congested, otherwise the lub port transmission bearer is congested.

Preferably, the notifying the congestion status to the base station is specifically: The CRNC notifies the base station of the congestion state of the lub port transmission bearer by using the lub port E-DCH bearer;

The base station adjusts an uplink data transmission amount carried by the lub port E-DCH according to the congestion status.

Preferably, the network control network element is a Serving Radio Network Controller (SRNC).

Preferably, the acquiring, by the network control network element, the E-DCH data frame is:

The drift radio network controller (DRNC) receives the E-DCH data frame sent by the base station through the lub interface E-DCH, and sends the E-DCH data frame to the SRNC through the lub port E-DCH bearer corresponding to the lur port E-DCH bearer, where The E-DCH data frame includes FSN, and/or, subframe number, and CFN information.

Whether the SRNC continuously determines whether the Iub/Iur port transmission bearer has a frame loss according to whether the FSN continuously determines; and/or determines whether the Iub/Iur port transmission bearer has a frame delay according to the CFN, the subframe number, and the RFN, where the Iub The Iub/Iur port transmission bearer is not congested, and the Iub/Iur port transmission bearer is congested.

Preferably, the notifying the congestion status to the base station is specifically:

The SRNC notifies the DRNC of the congestion status of the Iub/Iur port transmission bearer by using the lur port E-DCH bearer;

The DRNC notifies the base station of the congestion status by using the lub port E-DCH bearer corresponding to the lur interface E-DCH;

The base station adjusts the uplink data sending amount of the lub port E-DCH bearer according to the congestion state, so as to adjust the uplink data sending amount of the lur port E-DCH corresponding to the lub port.

Preferably, the base station adjusts the uplink data transmission amount of the E-DCH bearer according to the congestion state as: The base station determines the congestion status on the Iub interface according to the received congestion indication frame, and if there is frame loss and/or frame delay, the amount of data of the E-DCH carrying uplink data on the Iub interface is reduced, so that the current data can be normal. The ground is transmitted to the network side. Otherwise, the amount of data of the uplink data carried by the E-DCH on the Iub interface is gradually adjusted to the normal level (the Node B can gradually go back to normal operation).

A control system for enhancing congestion of a dedicated channel, comprising: an obtaining unit, a determining unit, and a notifying unit, which are disposed in the network control network element, and an adjusting unit disposed in the base station;

An obtaining unit, configured to acquire an E-DCH data frame;

a determining unit, configured to determine whether congestion is determined according to an FSN, and/or a subframe number, and a CFN in the E-DCH data frame;

a notification unit, configured to notify a base station of a congestion status;

And an adjusting unit, configured to adjust an uplink data sending amount of the E-DCH bearer according to the congestion state. Preferably, the network control network element is a CRNC; the acquiring unit further receives an E-DCH data frame sent by the base station by using an Iub interface E-DCH bearer.

Preferably, the determining unit further determines whether a frame loss occurs in the Iub interface transmission bearer according to whether the FSN continuously determines; and/or, determining whether the Iub interface transmission bearer has a frame delay according to the CFN, the subframe number, and the RFN, The Iub interface transmission bearer has no frame loss and no frame delay. The Iub interface transmission bearer is not congested. Otherwise, the Iub interface transmission bearer is congested.

Preferably, the notifying unit further informs the base station of the congestion status of the Iub interface transmission bearer by using the Iub interface common E-DCH 7;

The adjusting unit further adjusts, according to the congestion state, an uplink data sending amount of the common E-DCH bearer of the Iub port.

Preferably, the network control network element is an SRNC; the DRNC receives the E-DCH data frame sent by the base station by using the I-port E-DCH bearer, and the acquiring unit further carries the corresponding Iur port through the Iub interface E-DCH. The E-DCH bearer is sent to the SRNC. Preferably, the determining unit further determines, according to whether the FSN continuously determines whether the lub/Iur port transmission bearer has a frame loss; and/or determines whether the lub/Iur port transmission bearer is based on the CFN, the subframe number, and the RFN. A frame delay occurs. The lub/Iur port transmission bearer has neither frame loss nor frame delay. The lub/Iur port transmission bearer is not congested, otherwise the lub/Iur port transmission bearer is congested.

Preferably, the notifying unit further informs the DRNC of the congestion status of the lub/Iur port transmission by the Iur interface E-DCH bearer; the DRNC is carried by the Iur port E-DCH^ Corresponding Iub port E-DCH ^ carries the congestion status to the base station;

The adjusting unit further adjusts, according to the congestion state, the uplink data transmission amount carried by the Iub interface E-DCH, so as to adjust the uplink data transmission amount of the Iur interface E-DCH corresponding to the Iub interface. .

In the present invention, in the enhanced CELL_FACH state, the CRNC feeds back the congestion status of the E-DCH carried by the Iub interface to the NodeB, or the SRNC feeds back the congestion status of the E-DCH carried by the lub/Iur interface to the DRNC and transparently transmits it to the NodeB. The amount of uplink E-DCH data sent by the NodeB on the lub/Iur port is guided, so that the transmission resource of the lub/Iur port is fully utilized. DRAWINGS

FIG. 1 is a schematic structural diagram of an E-DCH data frame on an Iub interface in an enhanced CELL_FACH state; FIG. 2 is a schematic structural diagram of an E-DCH data frame on an Iur interface in an enhanced CELL_FACH state; FIG. 3 is a diagram showing enhancement of a lub/Iur port congestion in a CELL_FACH state. FIG. 4 is a schematic structural diagram of a control system for enhancing uplink congestion of a dedicated channel in a CELL_FACH state according to the present invention. detailed description

The basic idea of the present invention is to feed back the congestion state of the E-DCH carried by the Iub interface to the NodeB through the CRNC in the enhanced CELL_FACH state, or to feed the lub/Iur through the SRNC. The congestion status of the E-DCH carried by the port is forwarded to the DRNC and transparently transmitted to the NodeB, and the amount of uplink E-DCH data sent by the NodeB at the Iub/Iur port is guided, so that the transmission resources of the Iub/Iur interface are fully utilized effectively.

In the present invention, on the one hand, a lub port E-DCH bearer is established between the CRNC and the NodeB for the common MAC stream. After receiving the data from the air interface, the NodeB is encapsulated into an E-DCH data frame and sent to the CRNC through the E-DCH bearer on the lub interface. The E-DCH data frame carries information such as FSN, CFN, and SubFrameNo. The CRNC carries the information according to the data frame. The FSN information determines the data loss of the E-DCH carried on the lub interface, and determines the data carried by the E-DCH on the lub interface according to the CFN information and SubFrameNo information carried in the data frame and the locally maintained RFN (Radio Network Controller Frame Number) information. The delay condition is then determined according to a certain decision criterion, and the congestion state of the E-DCH bearer on the lub interface is fed back to the NodeB through the congestion indication frame; the NodeB obtains the congestion state of the E-DCH bearer on the lub interface from the CRNC, according to a certain congestion. The control policy adjusts the uplink grant of each user on the E-DCH bearer corresponding to the lub interface, thereby controlling the amount of data sent on the E-DCH bearer on the lub interface, so that the lub port transmission resource is fully and effectively utilized.

FIG. 1 is a schematic structural diagram of an E-DCH data frame on a lub port in a CELL_FACH state. As shown in FIG. 1 , an E-DCH data frame on a lub port includes a frame header, a frame body, and an optional part, wherein the frame The related control information of the E-DCH data frame is carried in the header, such as Cyclic Redundancy Check (CRC), FSN, SubFrameNo, CFN, and the like. In the present invention, the structure of the E-DCH data frame of the lub port can be specifically referred to the related protocol, and the specific structural details thereof are not described in the present invention.

In the present invention, the congestion control policy mainly adjusts the bearer data on the E-DCH bearer when the E-DCH bearer is congested. The strategy is quite flexible, and can be determined according to the operation strategy of each operator. Since it is not a difficulty to implement the technical solution of the present invention, details of implementation are not described herein. On the other hand, an Iur interface E-DCH bearer is established between the SRNC and the DRNC for the common MAC flow, and an Iub interface E-DCH bearer is established between the DRNC and the NodeB. The DRNC receives the E-DCH data frame from the E-DCH bearer on the Iub interface, and carries the information such as FSN, CFN, and SubFrameNo, and re-encapsulates the E-DCH bearer on the corresponding Iur interface of the E-DCH on the Iub interface. The SRNC sends the FSN information carried in the data frame to determine the data loss of the E-DCH carried on the lub/Iur interface, and determines the lub/Iur port based on the CFN information and SubFrameNo information carried in the data frame and the locally maintained RFN information. The data delay condition of the E-DCH is carried out, and then the congestion state of the E-DCH bearer on the lub/Iur interface is determined according to a certain decision criterion and fed back to the DRNC through the congestion indication frame; the DRNC obtains the E-DCH bearer on the lub/Iur interface from the SRNC. The congestion state is transparently transmitted to the NodeB through the E-DCH bearer on the corresponding Iub interface of the E-DCH bearer on the Iur interface; the NodeB obtains the congestion state of the E-DCH bearer on the Iub interface from the DRNC, according to a certain congestion control policy, The uplink grant of each user on the E-DCH bearer on the Iub interface is adjusted, so as to control the amount of data sent on the E-DCH bearer on the Iub interface, and then the E-DCH bearer on the Iub interface is controlled to correspond to the E on the Iur port. - The amount of data transmitted on the DCH bearer, so that the lub/Iur port transmission resources are fully and efficiently utilized.

2 is a schematic structural diagram of a common E-DCH data frame on the Iur interface in the enhanced CELL_FACH state. As shown in FIG. 2, the E-DCH data frame structure on the Iur interface is similar to the E-DCH data frame structure on the Iub interface, and includes a frame. The header, the frame body and the optional part are three parts, wherein the frame header carries related control information of the E-DCH data frame, such as CRC check code, FSN, SubFrameNo, CFN and the like. In the present invention, the structure of the E-DCH data frame on the Iur interface can be specifically referred to the related protocol, and the specific structural details are not described in the present invention.

3 is a schematic structural diagram of an enhanced lub/Iur interface congestion indication frame in a CELL_FACH state. As shown in FIG. 3, the lub/Iur interface congestion indication frame includes a frame header and a frame body, wherein the frame header includes a CRC check code. And a control frame type (Control Frame Type); the frame body portion includes a congestion state (Congestion State) and a reserved extension portion (Spare Extention); The Congestion State is used to notify the base station of the congestion status. The congestion status is as follows:

His value, as long as it can indicate the specific state of the current congestion.

The present invention will be further described in detail below with reference to the accompanying drawings.

Embodiment 1

In this example, the UE1, the NodeB1, and the RNCl are all working normally; the access base station of the UE1 is the NodeB1; the service RNC of the UE1 is the RNCl; the control RNC of the NodeB1 is the RNC1; and the E-DCH bearer is established between the RNC1 and the NodeB1.

The control method for enhancing the uplink congestion of the dedicated channel in this example specifically includes the following steps:

1. The UE1 successfully activates the packet data protocol (PDP, Packet Data Protocol) context.

2. The user performs related operations on the basis of the File Transfer Protocol (FTP), and the terminal UE1 requests authorization from the NodeB1.

3. NodeBl allocates authorization according to the scheduling resource status and the congestion status of the E-DCH bearer on the latest lub interface.

4. The terminal UE1 sends the uplink data according to the authorization of the NodeB1, and the NodeB1 encapsulates the E-DCH data frame (E-DCH DATA FRAME), which is sent to the RNC1 through the E-DCH bearer on the lub interface, and the E-DCH data frame carries the FSN, the CFN, and SubFrameNo and other information; E-DCH data frame is specifically structured as shown in FIG.

5. RNC1 determines whether a frame loss occurs according to the FSN, and sends a congestion indication frame to NodeB, where the congestion state is TNL Congestion detected by frame loss.

6. The RNC 1 determines that no frame loss occurs according to the FSN, and determines whether a frame delay occurs according to the CFN, SubFrameNo information, and the RFN information, and sends a congestion indication frame to the NodeB, where the congestion state is TNL Congestion detected by delay build-up .

7. RNC1 determines that there is neither frame loss nor frame delay, and then sends a congestion indication frame to

In the present invention, when the RNC1 can only obtain the FSN information, the RNC can only determine whether the frame is lost. At this time, if the FSN is not continuous, it is determined that the frame is lost, and the current interface is in the In the congestion state, when the FSN is continuous, since it is impossible to judge whether the frame is delayed or not, it is considered that the frame delay is not currently present, and it is determined that the frame is currently in an uncongested state. Similarly, when RNC1 can only obtain CFN and SubFrameNo information, it can only judge whether the frame is delayed. At this time, if there is a delay in the frame, it is determined that the interface is in a congested state, and when there is no frame delay, If the frame is continuously judged, the current frame is also considered to be continuous, and it is determined that the frame is currently in an uncongested state.

8. The NodeB1 determines the congestion status on the Iub interface according to the received congestion indication frame. If frame loss and/or frame delay occurs, the amount of data of the E-DCH carrying uplink data on the Iub interface is reduced, so that the current data data can be enabled. Normally transmitted to the network side, otherwise, the Node B can gradually go back to normal operation is gradually adjusted.

Embodiment 2

In this example, the terminals UE1, NodeB1, RNC1, and RNC2 all work normally; wherein the access base station of the terminal UE1 is the NodeB1; the serving RNC of the terminal UE1 is the RNC2; the control RNC of the NodeB1 is the RNC1; and the E is established between the RNC1 and the NodeB1. -DCH ^ Load; E-DCH bearer is established between RNC1 and RNC2.

1. The terminal UE1 successfully activates the PDP context. 2. The user performs related operations on the basis of FTP, and the terminal UE1 requests authorization from the uplink to the NodeB1.

3. NodeBl allocates authorization according to the scheduling resource status and the congestion status of the E-DCH bearer on the latest Iub/Iur interface.

4. The terminal UE1 sends uplink data according to the authorization of the NodeB1, and the NodeB1 encapsulates the data frame.

The E-DCH DATA FRAME is sent to the RNC 1 through the E-DCH bearer on the lub port, which carries information such as FSN, CFN, and SubFrameNo.

5. RNC1 repackages the E-DCH DATA FRAME and sends it to RNC2.

6. The RNC2 determines whether a frame loss occurs according to the FSN, and sends a congestion indication frame to the RNC1, where the congestion state is TNL Congestion detected by frame loss.

7. The RNC2 determines that there is no frame loss according to the FSN, and determines whether a frame delay occurs according to the CFN, SubFrameNo information, and the RFN information. If yes, the congestion indication frame is sent to the RNC1, where the congestion state is TNL Congestion detected by delay build-up.

8. The RNC 2 determines that there is no frame loss or no frame delay, and then sends a congestion indication frame to the RNC 1 , where the congestion state is No TNL congestion. In the present invention, when the RNC 2 can only obtain the FSN information, only the frame is lost. At this time, if the FSN is not continuous, it is determined that the frame is lost, and the current interface is in a congested state. When the FSN is continuous, since the frame cannot be judged whether the frame is delayed, it is considered that the frame delay is not currently present, and the current frame is determined to be present. Uncongested state. Similarly, when the RNC2 can only obtain the CFN and SubFrameNo information, it can only judge whether the frame is delayed. At this time, if there is a delay in the frame, it is determined that the interface is in a congested state, and when there is no frame delay, If the frame is continuously judged, the current frame is also considered to be continuous, and it is determined that the frame is currently in an uncongested state.

9. RNC1 receives the congestion indication frame from the E-DCH bearer on the Iur interface, and transmits it to NodeB1 through the E-DCH on the lub port.

10. The NodeB1 determines the congestion status on the lub port according to the received congestion indication frame. If the frame loss and/or the frame delay occurs, the amount of data of the E-DCH carrying the uplink data on the lub interface is reduced, so that the current data data can be normally transmitted to the network side. Otherwise, the E-DCH bearer on the lub port is gradually adjusted. The amount of data of the uplink data is normal.

4 is a schematic structural diagram of a control system for enhancing uplink congestion of a dedicated channel in a CELL_FACH state according to the present invention. As shown in FIG. 4, the control system for enhancing uplink congestion of a dedicated channel in a CELL_FACH state is provided in the network control system. An obtaining unit 40, a determining unit 41 and a notifying unit 42 in the network element, and an adjusting unit 43 provided in the base station;

An obtaining unit 40, configured to acquire an E-DCH data frame;

a determining unit 41, configured to determine, according to the FSN, and/or the subframe number, and the CFN in the E-DCH data frame, whether congestion is performed;

The notification unit 42 is configured to notify the base station of the congestion status;

The adjusting unit 43 is configured to adjust an uplink data transmission amount of the E-DCH bearer according to the congestion state.

The network control network element is a CRNC. The acquiring unit 40 further receives an E-DCH data frame sent by the base station by using a lub interface E-DCH, where the E-DCH data frame includes an FSN, and/or a subframe. Number and CFN information.

The determining unit 41 further determines, according to whether the FSN continuously determines whether the lub port transmission bearer has a frame loss, and/or determines whether the lub port transmission bearer has a frame delay according to the CFN, the subframe number, and the RFN, where the lub The port transmission bearer has neither frame loss nor frame delay, and the lub port transmission bearer has no congestion.

At this time, the notification unit 42 further informs the base station of the congestion status of the lub port transmission bearer by using the lub port E-DCH bearer;

The adjusting unit 43 further adjusts the uplink data transmission amount of the lub port common E-DCH bearer according to the congestion state. Alternatively, the network control network element is an SRNC; the DRNC receives the E-DCH data frame sent by the base station by using the I-port E-DCH bearer, and the acquiring unit 40 further carries the corresponding Iur port E- through the Iub interface E-DCH. The DCH bearer is sent to the SRNC, wherein the E-DCH data frame includes an FSN, and/or a subframe number and CFN information.

In this case, the determining unit 41 further determines whether the lub/Iur port transmission bearer has a frame loss according to whether the FSN continuously determines; and/or determines the lub/Iur port transmission according to the CFN, the subframe number, and the RFN. Whether the bearer delay occurs in the bearer, and when the lub/Iur port transmission bearer has neither frame loss nor frame delay, the lub/Iur port transmission bearer is not congested, otherwise the lub/Iur port transmission bearer is congested.

In this case, the notification unit 42 further informs the DRNC of the congestion status of the lub/Iur port transmission bearer by using the Iur interface E-DCH bearer; the DRNC is carried by the Iur interface E-DCH. The corresponding Iub interface E-DCH bearer notifies the base station of the congestion status; the adjusting unit 43 further adjusts the uplink data transmission amount of the Iub interface E-DCH bearer according to the congestion status, thereby adjusting the Iub with the Iub interface. The uplink data transmission amount carried by the Eur interface corresponding to the Iur interface.

It should be understood by those skilled in the art that the control system for enhancing the uplink congestion of the dedicated channel in the enhanced CELL_FACH state shown in FIG. 4 is designed to implement the foregoing control method for enhancing the uplink congestion of the dedicated channel in the enhanced CELL_FACH state. The implementation functions of the unit can be understood by referring to the relevant description of the foregoing method. The functions of the various processing units in the figures may be implemented by a program running on a processor or by a specific logic circuit. Of course, the present invention is not limited to the above-mentioned congestion state and its corresponding value, and may be other values as long as the specific state of the current congestion can be indicated.

Industrial applicability

The technical solution of the present invention feeds back the congestion status of the E-DCH carried by the Iub interface to the NodeB through the CRNC, or feeds back the congestion status of the uplink E-DCH carried by the lub/Iur interface through the SRNC. The DRNC is transparently transmitted to the NodeB to guide the amount of uplink E-DCH data sent by the NodeB at the lub/Iur port, thereby enabling the communication system to more fully utilize the transmission resources of the lub/Iur port.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

Claim

A control method for enhancing congestion of a dedicated channel, the method comprising: acquiring, in an enhanced CELL_FACH state, a network dedicated network element to obtain an enhanced dedicated channel

(E-DCH) after the data frame, determining whether congestion is caused by the frame sequence number (FSN), and/or the subframe number (SubFrameNo) and the common frame number (CFN) in the E-DCH data frame, and congestion Status informs the base station;

2. The method according to claim 1, wherein the network control network element is a Control Radio Network Controller (CRNC).

3. The method according to claim 2, wherein the network control network element determines whether the congestion is:

The method according to claim 2 or 3, wherein the notifying the congestion status to the base station is:

The CRNC notifies the base station of the congestion state of the lub port transmission bearer by using the lub port E-DCH bearer;

5. The method according to claim 1, wherein the network control network element is a serving radio network controller (SRNC).

The method according to claim 5, wherein the network control network element acquires an E-DCH data frame as: The drift radio network controller (DRNC) receives the E-DCH data frame sent by the base station through the I-port E-DCH bearer, and sends the E-DCH data frame to the SRNC through the Iub interface E-DCH bearer of the Iub interface E-DCH bearer, where The E-DCH data frame includes FSN, and/or, subframe number, and CFN information.

7. The method according to claim 5, wherein the network control network element determines whether the congestion is:

The method according to any one of claims 5 to 7, wherein the notifying the base station to the congestion state is:

The SRNC notifies the DRNC of the congestion status of the Iub/Iur port transmission bearer by using the Iur interface E-DCH bearer;

The DRNC notifies the base station of the congestion status by using the Iub interface E-DCH bearer corresponding to the Iub interface E-DCH;

The base station further adjusts the uplink data transmission amount of the I-port E-DCH bearer according to the congestion state, so as to adjust the uplink data transmission amount of the Iur interface E-DCH corresponding to the Iub interface.

The method according to claim 4 or 8, wherein the base station adjusts the uplink data transmission amount of the E-DCH bearer according to the congestion state as:

When the base station determines that the Iub interface has a frame loss and/or a frame delay, the amount of data of the E-DCH bearer uplink data on the Iub interface is reduced, and when no frame loss or frame delay occurs, the E-DCH bearer uplink on the Iub interface is gradually adjusted. The amount of data is up to normal.

10. A control system for enhancing congestion of a dedicated channel, wherein the system comprises An obtaining unit, a determining unit, and a notifying unit, which are disposed in the network control network element, and an adjusting unit disposed in the base station;

An obtaining unit, configured to acquire an E-DCH data frame;

And an adjusting unit, configured to adjust an uplink data sending amount of the E-DCH bearer according to the congestion state.

The system according to claim 10, wherein the network control network element is a CRNC, and the acquiring unit further receives an E-DCH data frame sent by the base station by using a lub interface E-DCH.

The system according to claim 11, wherein the determining unit further determines whether a frame loss occurs in the lub port transmission bearer according to whether the FSN continuously determines; and/or according to a CFN, a subframe number, and an RFN. Determining whether the lub port transmission bearer has a frame delay, and the lub port transmission bearer has neither frame loss nor frame delay, and the lub port transmission bearer is not congested, otherwise the lub port transmission bearer is congested.

The system according to claim 12, wherein the notifying unit further informs the base station of a congestion state of the lub port transmission bearer by using the lub port common E-DCH bearer;

The adjusting unit further adjusts, according to the congestion state, an uplink data transmission amount of the lub port common E-DCH bearer.

The system according to claim 10, wherein the network control network element is an SRNC; the DRNC receives an E-DCH data frame sent by the base station by using a lub interface E-DCH, and the acquiring unit further passes The lub interface E-DCH carries the corresponding lur E-DCH bearer and sends it to the SRNC.

The system according to claim 14, wherein the determining unit further Whether, according to whether the FSN continuously determines whether the lub/Iur port transmission bearer has a frame loss; and/or, determining whether the lub/Iur port transmission bearer has a frame delay according to the CFN, the subframe number, and the RFN, the lub/ If the Iur port transmission bearer has neither frame loss nor frame delay, the lub/Iur port transmission bearer is not congested, otherwise the lub/Iur port transmission bearer is congested.

The system according to claim 14 or 15, wherein the notification unit further informs the DRNC of the congestion status of the lub/Iur port transmission bearer by using the Iur interface E-DCH bearer; The DRNC notifies the base station of the congestion status by using the Iur interface E-DCH carrying the corresponding Iub interface E-DCH bearer;