WO2011109990A1

WO2011109990A1 - Method and system for changing use of enhanced dedicated channel transmission bearing

Info

Publication number: WO2011109990A1
Application number: PCT/CN2010/075707
Authority: WO
Inventors: 程翔; 刘霖; 柯雅珠
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-03-12
Filing date: 2010-08-04
Publication date: 2011-09-15
Also published as: CN102196523B; CN102196523A

Abstract

A method for changing the use of an enhanced dedicated channel (E-DCH) transmission bearing is disclosed, the method comprises the following steps: a radio network controller (RNC) performs reconfiguration of an existing E-DCH transmission bearing mode in a serving node B (101); the serving node B uses the reconfigured E-DCH transmission bearing mode to perform the setting and sending of an E-DCH data frame (102). The technical solution also discloses a system for changing the use of an E-DCH transmission bearing. The technical solution is able to ensure the normal soft switch of a terminal, and get macro diversity gain and improve the system performance.

Description

Method and system for changing the use of E-DCH transmission bearer

The present invention relates to an enhanced dedicated channel (E-DCH) transmission bearer technique in a wireless communication system, and more particularly to a method and system for modifying the use of an E-DCH transmission bearer. Background technique

In a wireless communication system, an Interconnection of Type B (IUB) interface is a logical interface between a Radio Network Controller (RNC) and a Node B. For a particular set of Node Bs, one of the roles of the RNC is to control the Radio Network Controller (C-RNC). For any one of the Node Bs, there is one and only one C-RNC, and the C-RNC has all the control rights of the logical resources of the Node B.

In a wireless communication system, an Interconnection of RNC (IRR) is an interface used by the RNC to perform signaling and data interaction with other RNCs, and is a link between wireless network subsystems. When a terminal establishes a connection to the radio access network and soft handover occurs on the IUR interface, more than one RNC resource is used, and different RNCs now play different roles:

The serving RNC is an RNC that maintains the interface between the terminal and the core network, and is responsible for data transmission between the core network and the terminal, and transmission and reception of interface signaling with the core network; responsible for radio resource control, for the air interface The data is processed by layer 2, and performs basic radio resource management operations, such as handover decision, outer loop power control, conversion of parameters of the radio access bearer to air interface transmission channel parameters, and the like;

The drift RNC refers to a RNC other than the serving RNC, which controls the cell used by the terminal, and if necessary, the drift RNC can perform macro diversity combining; unless the terminal uses the common transport channel, the drift RNC does not perform the terminal plane data. Layer processing, but just empty data Transparent routing through the IUR interface is passed to the serving RNC. There can be more than one RNC for one terminal.

The goal of high-speed uplink packet access technology is to improve capacity and data throughput in the upstream direction and reduce hysteresis in dedicated channels. A new transport channel, Enhanced Dedicated Channel (E-DCH), is introduced by the high-speed uplink packet access technology to improve the implementation of the physical layer and the medium access control layer, and the maximum theoretical uplink data can be achieved. The rate is 5.6 megabits per second. High-speed uplink packet access technology preserves the characteristics of soft handoff. The media access control protocol data unit received by the air interface is demultiplexed into a media access control flow, and is accessed from the Node B via the IUB interface or the RNC via the IUR interface in the form of an E-DCH data frame (Data Frame). The transport bearers corresponding to the control flow (each medium access control flow has a corresponding IUB interface and/or IUR interface transport bearer) and are transmitted to the target RNC (ie another RNC).

With the development of technology, dual-carrier high-speed uplink packet access technology is expected to be introduced into existing systems, which enables terminals to transmit data on two carriers with high-speed uplink packet access technology, thereby making the uplink data rate doubled. The carrier that contains the high-speed dedicated physical control channel in the dual carrier is called the primary carrier, and the other carrier in the dual carrier is called the secondary carrier.

A cell has one and only one carrier. Therefore, a dual-carrier high-speed uplink packet access technology is applied, and at least two cells are required. The carrier of one cell serves as a primary carrier, and the carrier of another cell serves as a secondary carrier. Such two cells are called dual-cells.

For a terminal, each carrier in the dual carrier has its own independent E-DCH active set. Different cells in the E-DCH active set may be in different Node Bs. Each layer of E-DCH is activated in a different set of cells, and only one cell transmits and receives an absolute grant. This cell is called a serving cell. The primary carrier serving cell and the secondary carrier serving cell must be in the same node B, which is referred to as "serving node B".

In the existing dual-carrier high-speed uplink packet access technology, the "E-DCH transmission bearer mode" is defined as the usage mode of the transmission bearer carrying the E-DCH data frame (Data Frame), and there are two modes: "E-DCH UL Flow Multiplexing Mode", "Separate lub/Iur Transport Bearer Mode (Separate lub/Iur Transport Bearer Mode)". The E-DCH UL Flow Multiplexing mode means that the same media access control (MAC, Media Access Control) stream received on all uplink carriers (primary carrier and secondary carrier) in the dual carrier is sent on one transport bearer; Separate The lub/Iur Transport Bearer mode refers to that each MAC stream received from each different uplink carrier (primary carrier or secondary carrier) in a dual carrier is transmitted on one transmission bearer.

Defining the uplink multiplexing information in the E-DCH data frame is: When the E-DCH transmission bearer mode is using the "E-DCH UL Flow Multiplexing mode", the uplink multiplexing information is used to indicate the data frame. The received carrier identifier, such as the primary carrier or the secondary carrier; when the "E-DCH transmission bearer mode" is in the "Separate lub/Iur Transport Bearer mode", the uplink multiplexing information is empty, or the uplink multiplexing information is ignored by the receiver. .

In the prior art, whether the two modes of the E-DCH transmission bearer mode are supported is a capability of the cell. Some cells support both modes of the E-DCH transport bearer mode; some cells do not support the two modes of the E-DCH transport bearer mode; some cells only support one of the E-DCH transport bearer modes. Mode.

Then, in soft handover, the support ability of the candidate cell for the two modes of the E-DCH transmission bearer mode needs to be considered. For a terminal, each carrier in the dual carrier has its own independent E-DCH active set, and each of the different cells in the E-DCH active set of each layer carrier needs to have at least the same E-DCH transmission bearer mode. One of the modes of support. Thus, there will be a limit to soft handoffs.

For example: The RNC controls one terminal to use the uplink dual carrier technology in a dual cell composed of cell 1 and cell 2 in the serving node B. At this time, the carrier of the cell 1 is the primary carrier in the uplink dual carrier, the carrier of the cell 2 is the secondary carrier in the uplink dual carrier, and both the cell 1 and the cell 2 support the "E-DCH UL Flow Multiplexing mode". In the process, RNC The decision uses the E-DCH transport bearer mode as "E-DCH UL Flow Multiplexing Mode" and notifies the serving Node B. When the terminal moves to the cell 3, the signal of the cell 3 is getting better and better, but the cell 3 does not support the "E-DCH UL Flow Multiplexing mode" and only supports the "Separate lub/Iur Transport Bearer mode", then the RNC cannot connect the cell 3 Join the active set of soft handoffs. In actual network operations, such scenarios often occur. Since soft handover is limited, the gain of macro diversity will not be obtained, and system performance will be greatly affected. Summary of the invention

In view of this, the main object of the present invention is to provide a method and system for changing the use of an E-DCH transmission bearer to ensure normal soft switching of the terminal, and to obtain macro diversity gain and improve system performance.

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

The present invention provides a method of modifying a transport bearer using an enhanced dedicated channel (E-DCH), the method comprising:

The Radio Network Controller (RNC) performs reconfiguration of the existing E-DCH transmission bearer mode for the serving Node B;

The serving node B uses the reconfigured E-DCH transmission bearer mode to set and transmit the E-DCH data frame.

The reconfiguration of the E-DCH transmission bearer mode is specifically as follows:

The currently used E-DCH upstream multiplexing mode is reconfigured into a separate lub/Iur transmission bearer mode; or the currently used separated lub/Iur transmission bearer mode is reconfigured to the E-DCH upstream multiplexing mode.

And setting and transmitting the E-DCH data frame by using the reconfigured E-DCH transmission bearer mode, specifically:

If the E-DCH transmission bearer mode after the reconfiguration is the E-DCH uplink multiplexing mode, the serving Node B changes to the E-DCH transmission bearer mode to set and send the E-DCH data frame. give away;

If the reconfigured E-DCH transport bearer mode is the split Iub/Iur transport bearer mode, the service node B changes to separate Iub/Iur transport bearer mode for E-DCH data frame setup and transmission.

The method further includes: if the serving Node B and the RNC are connected through an Class B Interconnect (IBB) interface, the RNC is a Control Radio Network Controller (C-RNC).

The method further includes: if the serving Node B and the RNC are not connected through the IUB interface, the RNC is a serving RNC, and the serving Node B is connected to the drift RNC through an IUB interface, and the drift RNC is interconnected through the RNC ( An IUR) interface is connected to the serving RNC;

Correspondingly, the reconfiguration of the E-DCH transmission bearer mode is specifically: the serving RNC performs reconfiguration of the existing E-DCH transmission bearer mode on the drift RNC through the IUR interface, and the drift RNC serves through the IUB interface The Node B performs the reconfiguration of the existing E-DCH transmission bearer mode; the E-DCH transmission bearer mode is used to perform E-DCH data frame setup and transmission, specifically: the service node B will be E- The DCH data frame is sent to the drift RNC via the IUB interface, and the drift RNC forwards the received E-DCH data frame to the serving RNC via the IUR interface.

The present invention also provides a system for modifying an E-DCH transmission bearer, the system comprising: an RNC and a service node B, wherein

The RNC is configured to perform reconfiguration of the existing E-DCH transmission bearer mode on the serving Node B; the serving Node B is configured to perform E-DCH data frame by using the reconfigured E-DCH transmission bearer mode. Set up and send.

The RNC is further configured to reconfigure the currently used E-DCH uplink multiplexing mode into a separate Iub/Iur transmission bearer mode; or reconfigure the currently used split Iub/Iur transmission bearer mode to an E-DCH uplink. Stream multiplexing mode. The serving Node B is further configured to: when the reconfigured E-DCH transmission bearer mode is the E-DCH uplink multiplexing mode, change to an E-DCH transmission bearer mode to set and send an E-DCH data frame; When the E-DCH transmission bearer mode after reconfiguration is the split Iub/Iur transmission bearer mode, the Ib/Iur transmission bearer mode is changed to set and transmit the E-DCH data frame.

If the service node B and the RNC are connected through an IUB interface, the RNC is a C-RNC.

If the serving Node B and the RNC are not connected through the IUB interface, the RNC is a serving RNC, and the serving Node B is connected to the drift RNC through an IUB interface, and the drift RNC is connected to the serving RNC through an IUR interface;

Correspondingly, the serving RNC is configured to perform reconfiguration of the existing E-DCH transmission bearer mode on the drift RNC through the IUR interface; the drift RNC is used to perform existing E-DCH transmission on the serving node B through the IUB interface. Reconfiguration of bearer mode;

The serving node B is configured to send the E-DCH data frame to the drift RNC via the IUB interface, and the drift RNC is configured to forward the received E-DCH data frame to the serving RNC via the IUR interface.

A method and system for modifying an E-DCH transmission bearer provided by the present invention, the reconfiguration of the existing "E-DCH transmission bearer mode" by the RNC to the serving Node B, and the "E" after the Node B uses the reconfiguration -DCH transmission bearer mode "Sets and transmits E-DCH data frames. Through the invention, the defects of the softswitch in the prior art are solved, the soft handover is ensured normally, and the macro diversity gain can be obtained, and the system performance is improved. DRAWINGS

1 is a flow chart of a method for changing an E-DCH transmission bearer according to the present invention;

2 is a schematic diagram of a scenario according to Embodiment 1 of the present invention;

3 is a flowchart of a method for changing an E-DCH transmission bearer according to Embodiment 1 of the present invention; FIG. 4 is a schematic diagram of a scenario according to Embodiment 2 of the present invention; FIG. 5 is a flowchart of a method for changing an E-DCH transmission bearer according to Embodiment 2 of the present invention. detailed description

The technical solutions of the present invention are further elaborated below in conjunction with the accompanying drawings and specific embodiments. A method for modifying an E-DCH transmission bearer provided by the present invention, as shown in FIG. 1, mainly includes the following steps:

Step 101: The RNC performs reconfiguration on the existing E-DCH transmission bearer mode for the serving Node B. Specifically, the method includes: reconfiguring the currently used E-DCH uplink multiplexing mode into a separate lub/Iur transmission bearer mode; or reconfiguring the currently used split lub/Iur transmission bearer mode into an E-DCH uplink multiplexing mode. .

Step 102: The serving node B uses the reconfigured E-DCH transmission bearer mode to set and transmit the E-DCH data frame.

Specifically, if the reconfigured E-DCH transmission bearer mode is the E-DCH uplink multiplexing mode, the serving Node B changes to the E-DCH transmission bearer mode to set and transmit the E-DCH data frame; After the E-DCH transmission bearer mode is the split lub/Iur transport bearer mode, the serving Node B changes to separate the lub/Iur transport bearer mode for setting and transmitting the E-DCH data frame.

It should be noted that if the service node B and the RNC are connected through the IUB interface, the RNC is the C-RNC.

If the serving Node B and the RNC are not connected through the IUB interface, the RNC is the serving RNC, and the serving Node B is connected to the drifting RNC through the IUB interface, and the drifting RNC is connected to the serving RNC through the IUR interface. Correspondingly, the operation of the E-DCH transmission bearer mode reconfiguration is specifically as follows: The serving RNC performs reconfiguration of the existing E-DCH transmission bearer mode on the drift RNC through the IUR interface, and the drift RNC performs the service node B through the IUB interface. Reconfiguration of E-DCH transport bearer mode. The E-DCH data frame is set and sent by using the re-configured E-DCH transmission bearer mode, specifically: the serving node B sends the E-DCH data frame to the drift RNC via the IUB interface, The shifting RNC forwards the received E-DCH data frame to the serving RNC via the IUR interface.

The method of using the E-DCH transport bearer described above will be further elaborated in conjunction with the specific embodiments.

In the first embodiment of the present invention, the setting scenario is as shown in FIG. 2, the carrier of the cell 1 and the carrier of the cell 2 are adjacent carriers, and the cell 1 and the cell 2 are both in the node B1, and both the cell 1 and the cell 2 are Supports "E-DCH UL Flow Multiplexing Mode" and "Separate Iub/Iur Transport Bearer Mode"; Node B1 and RNC1 are connected through the IUB interface. The carrier of cell 3 is the same as the carrier of cell 2, cell 3 is in node B2, cell 3 does not support "E-DCH UL Flow Multiplexing mode", only "Separate Iub/Iur Transport Bearer mode" is supported; node B2 and RNC1 pass IUB The interfaces are connected.

The background of the first embodiment is: First, the RNC1 control terminal 1 uses an uplink dual carrier technology in a dual cell composed of a cell 1 and a cell 2, and the carrier of the cell 1 is the master of the uplink dual carrier. Carrier, the carrier of cell 2 is the secondary carrier in the uplink dual carrier, the role of node B1 is the serving node B, and the role of RNC1 is C-RNC; between C-RNC and serving node B, this process is to establish dual carrier E -DCH procedure, in which the C-RNC (ie RNC1) decision uses the E-DCH transport bearer mode as "E-DCH UL Flow Multiplexing Mode" and notifies the serving Node B (ie Node B1); Serving Node B (ie, node B1) sets and transmits the E-DCH data frame in accordance with this mode.

Subsequently, the terminal 1 moves to the cell 3, the signal of the cell 3 is getting better and better, and the C-RNC (ie, RNC1) decision adds the cell 3 to the soft handover macro diversity; but the cell 3 does not support the "E-DCH UL Flow Multiplexing mode". Only "Separate Iub/Iur Transport Bearer mode" is supported, so the "E-DCH UL Flow Multiplexing mode" that is being used cannot be used. The C-RNC (ie, RNC1) needs to reconfigure the "E-DCH UL Flow Multiplexing Mode" being used as the "Separate Iub/Iur Transport Bearer Mode" supported by all cells, so that it can join the cell 3 to ensure the E-DCH. The correctness of the setting and transmission of data frames. The first embodiment describes the processing procedure between the C-RNC (ie, RNC1) and the serving node B (ie, the node B1). As shown in FIG. 3, the method mainly includes the following steps:

Step 301: The C-RNC (ie, RNC1) establishes an E-DCH in the serving node B (ie, the node B1) for the designated terminal (ie, the terminal 1), and notifies the serving node B (ie, the node B1 M transmits the E-DCH. The bearer mode is "E-DCH UL Flow Multiplexing mode", and service node B (ie, node B1) responds to this setup process.

In step 302, the service node B (ie, the node B1) performs setting and transmission of the E-DCH data frame according to the "E-DCH UL Flow Multiplexing mode".

The serving node B (ie, the node B1) sets the "uplink multiplexing information" in the E-DCH data frame, and is used to indicate the carrier identifier received for this data frame: primary carrier or secondary carrier; service node B (ie, node B1) The same MAC stream received on all uplink carriers (primary carrier and secondary carrier) is sent to the C-RNC (ie, RNC1) on one transmission bearer.

Step 303: The C-RNC (ie, RNC1) reconfigures the E-DCH transport bearer mode in the serving node B (ie, the node B1) for the designated terminal (ie, the terminal 1), and notifies the serving node B (ie, the node B 1 ) The -DCH transport bearer mode is changed to "Separate Iub/Iur Transport Bearer mode", and service node B (ie, node B1) responds to this reconfiguration process.

In step 304, the service node B (ie, node Bl) «t^ "Separate Iub/Iur Transport Bearer mode" performs setting and transmission of the E-DCH data frame.

The service node B (ie, node B1) sets the "uplink multiplexing information" in the E-DCH data frame to be empty, or the "uplink multiplexing information" is ignored by the C-RNC (ie, RNC1); the serving node B (ie, node B1) Each MAC stream received from each of the different uplink carriers (primary or secondary) is placed on a transport bearer and sent to the C-RNC (ie, RNC1).

In the second embodiment of the present invention, the setting scenario is as shown in FIG. 4, RNC1 and RNC2 are connected through an IUR interface; the carrier of cell 1 and the carrier of cell 2 are adjacent carriers, and cell 1 and cell 2 are both in node B2. , Cell 1 and Cell 2 both support "E-DCH UL Flow Multiplexing Mode" "" and "Separate lub/Iur Transport Bearer mode", Node B2 and RNC2 are connected through the IUB interface; Cell 3 has the same carrier as Cell 2, Cell 3 is in Node B3, Cell 3 does not support "E-DCH UL Flow Multiplexing mode", only "Separate lub/Iur Transport Bearer mode" is supported, and node Β3 and RNC2 are connected through the IUB interface.

The background of the second embodiment is: First, the RNC1 control terminal 1 uses an uplink dual carrier technology in a dual cell composed of a cell 1 and a cell 2 in the RNC 2, where the carrier of the cell 1 is an uplink dual carrier. In the primary carrier, the carrier of the cell 2 is the secondary carrier in the uplink dual carrier, the role of the node B2 is the serving node B, the role of the RNC1 is the serving RNC, and the role of the RNC 2 is the drift RNC. In the process of establishing a dual-carrier E-DCH, the serving RNC (ie, RNC1) decides to use the E-DCH transmission bearer mode as "E-DCH UL Flow Multiplexing Mode" and notifies the drift RNC (ie, RNC2), and then drifts the RNC ( That is, RNC2) is notified to the serving Node B (ie, Node B2); the serving Node B (ie, Node B2) performs E-DCH data frame setup and transmission to the drift RNC (ie, RNC2) according to this mode; and the drift RNC (ie, RNC2) performs The forwarding of the E-DCH data frame is sent to the serving RNC (ie, RNC1).

Subsequently, the terminal 1 moves to the cell 3, and the signal of the cell 3 is getting better and better, serving the RNC (ie,

RNC1) decision to add cell 3 to the soft handover macro diversity, but cell 3 does not support "E-DCH UL Flow Multiplexing mode", only "Separate lub/Iur Transport Bearer mode" is supported, so the "E-DCH" in use cannot be used. UL Flow Multiplexing mode". The serving RNC (ie RNC1) needs to reconfigure the "E-DCH UL Flow Multiplexing mode" being used as the "Separate lub/Iur Transport Bearer mode" supported by all cells, so that it can force into the cell 3 to ensure E- The correctness of the setting and transmission of DCH data frames.

The second embodiment describes the processing between the serving RNC (ie, RNC1) and the drifting RNC (ie, RNC2), and the serving node B (ie, the node B2), which also involves the processing of the IUR interface, as shown in FIG. It mainly includes the following steps:

Step 501: The serving RNC (ie, RNC1) is a designated terminal (ie, terminal 1), in the drift The E-DCH is established in the RNC (ie, RNC2), and the drifting RNC (ie, RNC2) is notified to use the E-DCH transport bearer mode as "E-DCH UL Flow Multiplexing Mode", and the drift RNC (ie, RNC2) responds to this establishment process.

Step 502: The drift RNC (ie, RNC2) establishes an E-DCH in the serving node B (ie, the node B2), and notifies the serving node B (ie, the node B2) to use the E-DCH transmission bearer mode as "E-DCH UL Flow Multiplexing". Mode ", month node B (ie node B2) responds to this setup process.

Step 503: The service node B (ie, the node B2) performs setting and sending of the E-DCH data frame according to the "E-DCH UL Flow Multiplexing mode".

The serving node B (ie, the node B2) sets the "uplink multiplexing information" in the E-DCH data frame, and is used to indicate the carrier identifier received for this data frame: primary carrier or secondary carrier; service node B (ie, node B2) The same MAC stream received on all uplink carriers (primary carrier and secondary carrier) is placed on a transmission bearer and sent to the drift RNC (ie, RNC2).

Step 504, the drift RNC (ie, RNC2) forwards the E-DCH data frame to the serving RNC (ie, RNC1) according to the "E-DCH UL Flow Multiplexing Mode".

Step 505: The serving RNC (ie, RNC1) is a designated terminal (ie, terminal 1), re-allocating the E-DCH in the drift RNC (ie, RNC2), and notifying the drifting RNC (ie, RNC2) that the E-DCH transport mode is changed to " Separate Iub/Iur Transport Bearer Mode", Drift RNC (ie RNC2) responds to this reconfiguration process.

Step 506, the drift RNC (ie, RNC2) is reconfigured in the service node B (ie, node B2)

E-DCH, and informs service node B (ie, node B2) that the E-DCH transport bearer mode is changed to "Separate Iub/Iur Transport Bearer mode", and the service node Β (ie, node Β2) responds to this reconfiguration process.

In step 507, the service node 即 (ie, node Β 2) performs setting and transmission of the E-DCH data frame according to the "Separate Iub/Iur Transport Bearer mode". Service Node B (ie, Node B2) sets the "uplink multiplexing information" in the E-DCH data frame to be empty, or "uplink multiplexing information" is ignored by the serving RNC (ie, RNC1), and the serving Node B (ie, Node B2) will Each MAC stream received from each of the different uplink carriers (primary or secondary) is placed on a transport bearer and sent to the drift RNC (ie, RNC2).

Step 508, the drift RNC (ie, RNC2) forwards the E-DCH data frame to the serving RNC (ie, RNC1) according to the "Separate Iub/Iur Transport Bearer mode".

Corresponding to the foregoing method of using the E-DCH transport bearer, the present invention also provides a system for changing the transport bearer using the E-DCH, including: the RNC and the service node B.

The RNC is configured to perform reconfiguration of the existing E-DCH transport bearer mode on the serving Node B, and reconfigure the currently used E-DCH uplink multiplexing mode into a separate Iub/Iur transport bearer mode; or, the current use The split Iub/Iur transport bearer mode is reconfigured to the E-DCH upstream multiplexing mode.

The service node B is configured to perform E-DCH data frame setting and transmission by using the reconfigured E-DCH transmission bearer mode. When the E-DCH transmission bearer mode after reconfiguration is E-DCH uplink multiplexing mode, the E-DCH transmission bearer mode is changed to E-DCH data frame setting and transmission; E-DCH transmission after reconfiguration When the bearer mode is the split Iub/Iur transport bearer mode, the Eubidary Iub/Iur transport bearer mode is changed to set and transmit the E-DCH data frame.

In addition, if the serving node B and the RNC are connected through the IUB interface, the RNC is a C-RNC.

If the serving Node B and the RNC are not connected through the IUB interface, the RNC is the serving RNC, and the serving Node B is connected to the drift RNC through the IUB interface, and the drift RNC is connected to the serving RNC through the IUR interface. Correspondingly, the serving RNC performs reconfiguration of the existing E-DCH transmission bearer mode on the drifting RNC through the IUR interface, and the drifting RNC performs reconfiguration of the existing E-DCH transmission bearer mode on the serving node B through the IUB interface. The serving Node B sends the E-DCH data frame to the drift RNC via the IUB interface, and the drift RNC forwards the received E-DCH data frame to the serving RNC via the IUR interface. The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

Claim

A method for changing a transmission bearer using an enhanced dedicated channel (E-DCH), the method comprising:

2. The method for modifying an E-DCH transmission bearer according to claim 1, wherein the reconfiguration of the E-DCH transmission bearer mode is specifically:

The currently used E-DCH upstream multiplexing mode is reconfigured as a separate Iub/Iur transmission bearer mode; or, the currently used split Iub/Iur transmission bearer mode is reconfigured to the E-DCH upstream multiplexing mode.

3. The method for modifying an E-DCH transmission bearer according to claim 2, wherein the E-DCH data bearer mode is set and sent by using the reconfigured E-DCH transmission bearer mode, specifically:

If the reconfigured E-DCH transmission bearer mode is the E-DCH uplink multiplexing mode, the serving node B changes to the E-DCH transmission bearer mode to set and transmit the E-DCH data frame;

4. The method of using an E-DCH transport bearer according to claim 1, 2 or 3, characterized in that the method further comprises: if the service node B and the RNC are connected through a class B

The (IBB) interface is connected, and the RNC is a Control Radio Network Controller (C-RNC).

5. A method of modifying an E-DCH transmission bearer according to claim 1, 2 or 3, The method further includes: if the serving Node B and the RNC are not connected through the IUB interface, the RNC is a serving RNC, and the serving Node B is connected to the drift RNC through an IUB interface, and the drift RNC passes the RNC An Inter-Connected (IUR) interface is connected to the serving RNC;

6. A system for changing an E-DCH transmission bearer, the system comprising: an RNC and a service node B, wherein

The system for modifying an E-DCH transmission bearer according to claim 6, wherein the RNC is further configured to reconfigure the currently used E-DCH uplink multiplexing mode as a separate Iub/Iur transmission bearer. Mode; or, reconfigure the currently used split Iub/Iur transport bearer mode to the E-DCH uplink multiplexing mode.

8. The system for modifying an E-DCH transmission bearer according to claim 7, wherein the serving node B is further configured to: the E-DCH transmission bearer mode after reconfiguration is E-DCH uplink multiplexing In the mode, the E-DCH transmission bearer mode is changed to set and transmit the E-DCH data frame; when the reconfigured E-DCH transmission bearer mode is the split Iub/Iur transmission bearer mode, the change is to separate Iub/Iur transmission. The bearer mode performs setting and transmission of E-DCH data frames.

9. A system for modifying an E-DCH transport bearer according to claim 6, 7 or 8, characterized in that said RNC is a C-RNC if said serving Node B is connected to the RNC via an IUB interface.

10. The system for modifying an E-DCH transmission bearer according to claim 6, 7 or 8, wherein if the serving Node B and the RNC are not connected through an IUB interface, the RNC is a serving RNC, and The serving Node B is connected to the drift RNC through an IUB interface, and the drift RNC is connected to the serving RNC through an IUR interface;