WO2012034276A1

WO2012034276A1 - Improved method and system for releasing enhanced dedicated channel radio network temporary identifiers

Info

Publication number: WO2012034276A1
Application number: PCT/CN2010/076965
Authority: WO
Inventors: 黄梅青
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-09-15
Filing date: 2010-09-15
Publication date: 2012-03-22

Abstract

The present invention discloses an improved method for releasing Enhanced Dedicated Channel (E-DCH) Radio Network Temporary Identifiers (ERNTIs). The method includes the following step: through a radio link deletion (RL DELETE) message added with indication information, a node (Node B) is notified to release the ERNTI unused currently by a user equipment (UE). The present invention also discloses an improved system for releasing ERNTIs. In the system, after the Node B receives the RL DELETE message added with the indication information, a release unit is used for releasing the ERNTI unused currently by the UE according to the indication information. Adoption of the method and system of the present invention can release the ERNTIs more quickly.

Description

Improved method and system for releasing ERNTI

The present invention relates to a technique for releasing an E-DCH radio network temporary label (ERNTI), and more particularly to an improved method and system for releasing an ERNTI in an uplink enhanced FACH function of Wideband Code Division Multiple Access (WCDMA) . Background technique

The R8 protocol introduces the CELL_FACH state and the FLE (Enhanced Uplink in CELL_FACH state and Idle mode) function. This FACH refers to the CELL-FACH state, that is, the CELL-FACH state uplink enhanced dedicated channel (E-DCH, Enhanced). Dedicated Channel) The data is transmitted by the channel, and the idle (IDLE) state uses the E-DCH channel for user equipment (UE) access. It can reduce the UE access time, reduce the channel migration delay, and increase the CELL-FACH state service rate.

The existing solution for releasing ERNTI is: Sending a User Equipment Status Update (UE STATUS UPDATE) message through the RNC, notifying Node B (NodeB) to release the ERNTI that is not currently being used. Note that: In order to avoid adding excessive load to the Iub interface, the frequency at which the RNC sends the UE STATUS UPDATE message cannot be very high.

The UE STATUS UPDATE belongs to the public message, and the transmission frequency of the UE is not high. In order to avoid adding excessive load to the Iub interface, it is also necessary to reduce the transmission frequency of the UE STATUS UPDATE. As a result, the frequency of UE STATUS UPDATE transmission is reduced, which will inevitably lead to the slow release of ERNTI. Summary of the invention

In view of this, the main object of the present invention is to provide an improved method for releasing ERNTI and The system, even if the UE STATUS UPDATE transmission frequency is reduced, will not affect the release of ERNTI, so that ERNTI can be released faster.

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

An improved method for releasing ERNTI, the method comprising: notifying a node (NodeB) to release an E-DCH radio network temporary flag not used by a current user equipment (UE) by adding a radio link deletion (RL DELETE) message indicating information ( ERNTI).

The indication information is specifically an ERNTI release indication. The ERNTI release indication is used to indicate whether the NodeB needs to release an ERNTI that is not used by the current UE.

The method further includes: when the current UE accesses the cell by using the common E-DCH channel and is carried in the CELL_DCH state, if the RRC link of the current UE is released, the radio network controller (RNC) passes the RL DELETE message. The ERNTI release indication instructs the NodeB to release the ERNTI that is not used by the current UE.

The method further includes: when the current UE accesses the cell by using the common E-DCH channel and is carried in the CELL_DCH state, if the current UE is handed over from the current access cell to another cell, the RNC passes the ERNTI in the RL DELETE message. The release indication instructs the NodeB to release the ERNTI that the current UE does not use.

An improved system for releasing ERNTI, the system comprising: a release unit, configured to: after the NodeB receives the RL DELETE message of the join indication information, release the ERNTI that is not used by the current UE according to the indication information.

The releasing unit is further configured to: when the current UE accesses the cell by using the common E-DCH channel and is carried in the CELL_DCH state, when the RRC link of the current UE is released, the RNC is released by using the ERNTI in the RL DELETE message. An indication that the NodeB is released to release the ERNTI that the current UE does not use. The releasing unit is further configured to: when the current UE accesses the cell by using the common E-DCH channel and is carried in the CELL_DCH state, when the current UE is switched from the current access cell to another cell, the RNC passes the RL DELETE The ERNTI release indication in the message instructs the NodeB to release the ERNTI that the current UE does not use.

The present invention uses the Radio Link Delete (RL DELETE) message with the indication information to inform the NodeB to release the ERNTI that is not currently being used. Since the present invention implements the release of ERNTI using the RL DELETE message as a dedicated message, even if the transmission frequency of the UE STATUS UPDATE is lowered, the release of ERNTI is not affected, and the ERNTI can be released more quickly. DRAWINGS

FIG. 1 is a schematic diagram of notifying a NodeB to release an ERNTI by using an RL DELETE when the RRC link is released according to the present invention;

FIG. 2 is a schematic diagram of the RNTI notification to the NodeB by the RL DELETE when the UE handovers to another cell according to the present invention. detailed description

The basic idea of the present invention is: notification by adding an RL DELETE message indicating information

The NodeB releases the ERNTI that the current UE does not use.

The implementation of the technical solution will be further described in detail below with reference to the accompanying drawings.

An improved method of releasing ERNTI, which mainly includes the following:

The indication information is added to the existing RL DELETE message of the 25.433 protocol; by adding the RL DELETE message indicating the information, the NodeB is notified to release the ERNTI that is not currently used.

Further, the indication information is specifically an ERNTI release indication, which is used to inform the NodeB whether it is necessary to release the ERNTI that is not currently used. The ERNTI here includes: ERNTI in the private state and ERNTI in the public state.

Here, in addition to being able to release ERNTI faster, the present invention is currently not used because it can be released. ERNTI, therefore, can improve the efficiency of ERNTI. The reason is that the ERNTI allocated by the NodeB is limited, and the ERNTI that is not used can be released in time, and can be allocated to other UEs for use. For example, for UEs that use the public E-DCH channel access, speeding up the release of their common ERNTI can improve the efficiency of ERNTI.

Further, when the UE accessing the public E-DCH channel is carried in the CELL_DCH state, if the RRC link is released or switched to another cell, the RNC may notify the NodeB that the current release is not performed by the ERNTI release indication of the RL DELETE message. The ERNTI used.

In summary, the present invention implements the release of ERNTI by using the RL DELETE message as a dedicated message, and even if the transmission frequency of the UE STATUS UPDATE is lowered, the release of the ERNTI is not affected, so that the ERNTL can be released more quickly. The method for implementing the ERNTI release by using the RL DELETE message with the indication information and the ERNTI release mode by using the UE STATUS UPDATE can complement each other, that is, if the RRC connection is released or switched to another cell, the call can be made. The RL DELETE message with the indication information implements the ERNTI release mode to speed up the release of the common ERNTI. If it is the handover between the CELL_FACH state and the CELL_DCH state in the cell, the UE STATUS UPDATE can be used to implement the ERNTI release mode to release the public ERNTI. .

The invention is illustrated by way of example below.

Embodiment 1: The RL DELETE message is used to notify the NodeB to release the ERNTI when the RRC link is released.

As shown in Figure 1, the following steps are included:

Step 101: The UE accesses the cell through the public E-DCH channel, and sends an RRC CONNECTION REQUEST message from the Common Control Channel (CCCH). The RRC CONNECTION REQUEST can be expressed as RRC CONN REQ.

Here, the RRC CONNECTION REQUEST message sent from the Common Control Channel (CCCH) can be represented by "CCCH (RRC CONNECTION REQUEST),". Step 102: The NodeB allocates an ERNTI to the UE.

Step 103: The NodeB sends an FP frame to the RNC, where the FP frame includes the ERNTI and the CCCH data sent by the RRC CONNECTION REQUEST message.

Step 104: The RNC decides to establish signaling in the CELL-FACH state, using ERNTI. Step 105: The RNC sends an RRC CONNECTION SETUP message to the UE. ERNTI is included in the RRC CONNECTION SETUP message. RRC CONNECTION SETUP can be expressed as RRC CONN SETUP.

Step 106: The UE sends an RRC CONNECTION SETUP COMPLETE message to the RNC. RRC CONNECTION SETUP COMPLETE can be expressed as RRC CONN SETUP COMPLETE.

Step 107: When the service is established, the RNC decides to move the UE state into the RRC-DCH state, that is, performs F-to-D processing (that is, the CELL-FACH state transits to the RRC-DCH state).

Step 108: When the service is established, the RNC sends a RADIO LINK SETUP REQUEST message to the NodeB. The RADIO LINK SETUP REQUEST message includes ERNTI. RADIO LINK SETUP REQUEST can be expressed as RL SETUP.

Step 109: When the service is established, the NodeB decision-specific state ERNTI follows the ERNTI in the public state, that is, the ERNTI in the dedicated state is the same as the ERNTI in the public state.

Step 110: The NodeB sends a RADIO LINK SETUP RESPONSE message to the RNC. ERNTI is included in the RADIO LINK SETUP RESPONSE message. Here, the RNC is returned to the same ERNTI as the RNC sent to the NodeB in the previous step 108. RADIO LINK SETUP RESPONSE can be expressed as RL SETUP RSP.

Step 111: The UE service ends, and the RNC decides to release the service and signaling.

Step 112: The UE service ends, and the RNC initiates an RRC link release, and sends an RRC CONNECTION RELEASE message to the UE. The RRC CONNECTION RELEASE can be expressed as RRC CONN RELEASE. Step 113: The UE service ends, and the RNC sends an RL DELETE message to the NodeB, where the RL DELETE message carries an ERNTI release indication, and is used to notify the NodeB to release the ERNTI.

Step 114: After receiving the RL DELETE message carrying the ERNTI release indication, the NodeB releases the ERNTI that is not used by the current UE, and may allocate the ERNTI that is not used by the current UE to other UEs. Here, since the UE service ends, the current UE does not need the ERNTI.

Embodiment 2: When the UE switches to another cell, it notifies the NodeB to release ERNTI through RL DELETE.

As shown in Figure 2, the following steps are included:

Step 201: The UE accesses the NodeB 1 through the public E-DCH channel, and sends an RRC CONNECTION REQUEST message from the CCCH.

Here, the RRC CONNECTION REQUEST message transmitted from the Common Control Channel (CCCH) can be represented by "CCCH (RRC CONNECTION REQUEST),".

Step 202: NodeB 1 allocates ERNTR to the UE.

Step 203: The NodeB 1 sends an FP frame to the RNC, where the FP frame includes the ERNTI and the CCCH data sent by the RRC CONNECTION REQUEST.

Step 204: The RNC decides to establish signaling in the CELL-FACH state, using ERNTI. Step 205: The RNC sends an RRC CONNECTION SETUP message to the UE. The RRC CONNECTION SETUP message includes ERNTI.

Step 206: The UE sends an RRC CONNECTION SETUP COMPLETE to the RNC. Step 207: When the service is established, the RNC decides to move the UE state into the RRC-DCH state, that is, performs F-to-D processing (that is, the CELL-FACH state transits to the RRC-DCH state).

Step 208: When the service is established, the RNC sends a RADIO LINK SETUP REQUEST message to the NodeB 1. ERNTI is included in the RADIO LINK SETUP REQUEST message.

Step 209: When the service is established, the NodeBl decision-specific state ERNTI follows the public state. ERNTI, that is, the ERNTI in the dedicated state is the same as the ERNTI in the public state. Step 210: The NodeB 1 sends a RADIO LINK SETUP RESPONSE message to the RNC. ERNTI is included in the RADIO LINK SETUP RESPONSE message. Here, the same ERNTI sent to the NodeB as the RNC in the previous step 208 is returned to the RNC.

Step 211: The RNC decides to switch the UE to NodeB2.

Step 212: The RNC interacts with the NodeB2 RADIO LINK SETUP REQUEST message. ERNTI is included in the RADIO LINK SETUP REQUEST message.

Step 213: The RNC interacts with the UE to perform a physical channel reconfiguration (PHYSICAL CHANNEL RECONFIGURATION) message. PHYSICAL CHANNEL RECONFIGURATION can be expressed as RHYSICAL CHANNEL RECFG.

Step 214: The RNC sends an RL DELETE message to the NodeB 1, and the RL DELETE message carries an ERNTI release indication, which is used to notify the NodeB to release the ERNTL.

Step 215: After receiving the RL DELETE message carrying the ERNTI release indication, the NodeB 1 releases the ERNTI that is not used by the current UE, and may allocate the ERNTI that is not used by the current UE to other UEs. Here, since the UE service ends, the current UE does not need the ERNTI.

An improved system for releasing ERNTI, the system includes a release unit, and the release unit is configured to release the ERNTI that is not used by the current UE according to the indication information after the NodeB receives the RL DELETE message of the join indication information.

Here, the indication information is specifically an ERNTI release indication; the ERNTI release indication is used to indicate whether the NodeB needs to release the ERNTI that is not used by the current UE.

Here, the release unit has two specific implementations. One is: the release unit is further configured to: when the current UE accesses the cell using the common E-DCH channel and is carried in the CELL_DCH state, when the RRC link of the current UE is released, the RNC sends an indication by using an ERNTI in the RL DELETE message, indicating The NodeB releases the ERNTL that the current UE does not use. The other is: The release unit is further used by the current UE to access the cell using the common E-DCH channel and carried in the CELL_DCH state. In the case that the current UE is switched from the current access cell to another cell, the RNC indicates that the NodeB releases the ERNTL that is not used by the current UE by using the ERNTI release indication in the RL DELETE message.

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

An improved method for releasing ERNTI, the method comprising: instructing a node (NodeB) to release an E- unused by a current user equipment (UE) by adding a radio link deletion (RL DELETE) message indicating information DCH Wireless Network Temporary Marker (ERNTI).

The method according to claim 1, wherein the indication information is specifically an ERNTI release indication, and the ERNTI release indication is used to indicate whether the NodeB needs to release an ERNTI that is not used by the current UE.

The method according to claim 2, wherein the method further comprises: when the current UE accesses the cell using the common E-DCH channel and is carried in the CELL_DCH state, if the RRC link of the current UE is released, the wireless network The controller (RNC) instructs the NodeB to release the ERNTI not used by the current UE by the ERNTI release indication in the RL DELETE message.

The method according to claim 2, wherein the method further comprises: when the current UE accesses the cell using the common E-DCH channel and is carried in the CELL_DCH state, if the current UE is switched from the current access cell to the other The cell, the RNC, by using the ERNTI release indication in the RL DELETE message, instructs the NodeB to release the ERNTI that is not used by the current UE.

The system according to claim 5, wherein the indication information is specifically an ERNTI release indication, and the ERNTI release indication is used to indicate whether the NodeB needs to release an ERNTI that is not used by the current UE.

The system according to claim 6, wherein the releasing unit is further configured to: when the current UE accesses the cell using the common E-DCH channel and is carried in the CELL_DCH state, the RRC link of the current UE is released. The RNC indicates, by the ERNTI release indication in the RL DELETE message, that the NodeB releases the ERNTI that is not used by the current UE.

The system according to claim 6, wherein the releasing unit is further configured to: when the current UE accesses the cell by using a common E-DCH channel and is carried in the CELL_DCH state, the current UE is from the currently accessed cell. When being switched to another cell, the RNC indicates, by the ERNTI release indication in the RL DELETE message, that the NodeB releases the ERNTI that is not used by the current UE.