WO2016177102A1

WO2016177102A1 - Method and device for processing value of timer, and computer storage medium

Info

Publication number: WO2016177102A1
Application number: PCT/CN2016/076174
Authority: WO
Inventors: 吴蕴璐
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-07-27
Filing date: 2016-03-11
Publication date: 2016-11-10
Also published as: CN106413008A

Abstract

Provided are a method and device for processing a value of a timer, and a computer storage medium. The method of the present invention comprises: a source evolved Node B adjusting a value of a first timer according to indication information sent by a target evolved Node B; the source evolved Node B setting the value of the first timer according to configuration information sent by operation administration and maintenance; the target evolved Node B setting a value of a second timer according to a switching request message sent by the source evolved Node B; the target evolved Node B adjusting the value of the second timer according to a switching failure message sent by the source evolved Node B; and the target evolved Node B setting the value of the second timer according to the configuration information sent by operation administration and maintenance, so that it can be guaranteed that a double-connection switching enhancement solution can be successfully implemented, and at the same time, a failure generated in the switching preparation process of switching a source eNB1 to a target eNB2 due to the fact that the SeNB addition preparation process fails can be avoided.

Description

Timer value processing method, device and computer storage medium

Technical field

The present invention relates to the field of communications, and in particular, to a method and a device for processing a timer value, and a computer storage medium.

Background technique

With the rapid development of wireless multimedia services, the demand for high data rates and user experience is increasing, which puts high demands on the system capacity and coverage of the traditional Long Term Evolution (LTE) cellular network. . In a conventional LTE cellular network, a macro base station (eNB) provides an access service for a user equipment (User Equipment, UE for short) as a unique access side network element. In order to meet the user's demand for higher data rates and improve the spectrum efficiency of the cellular network, when deploying the LTE cellular network, the operator deploys a large number of low power nodes (LPNs) as a supplement to the macro base station to provide connectivity for the UE. Into the service. The LPN is characterized by low-cost, low-power, and easy-to-deploy. It can include hotspot deployment and enhanced coverage. It can effectively improve the data rate of high-speed data services in indoor or outdoor hotspots and improve remote areas or communities. Edge coverage. Generally, the LPN may also be referred to as a small base station, which may include, but is not limited to, a Home Base Station (Home eNB, abbreviated as HeNB), a Pico eNB, a Radio Remote Unit/Head (RRU/RRH), and a Relay Node ( Relay Node, RN). However, since the coverage of the small cell under the small base station is small, the probability of a handover failure occurs when the medium and high speed mobile UE passes through the small base station, thereby affecting UE service continuity. In order to improve the UE mobile performance after the introduction of the small cell, the industry proposes to ensure basic coverage by a certain base station (for example, a macro base station), and the UE always maintains a radio resource control (Radio Resource Control, RRC for short) connection with the base station, and small The cell serves only as a Transmission Point (TP) to provide a high data rate and meet the user's power saving requirements. FIG. 1 is a schematic diagram of a dual connectivity architecture according to the related art. As shown in FIG. 1 , in this system architecture, a UE maintains a connection with at least two base stations and uses radio resources under two base stations, so that radio resource aggregation across nodes can be implemented. This architecture is usually called a dual connectivity architecture. . The two base stations connected to the UE have a certain management control capability and are generally referred to as a primary base station (Master eNB, abbreviated as MeNB), and the other base station is referred to as a secondary base station (Secondary eNB, abbreviated as SeNB).

In the foregoing FIG. 1, for each UE, on the control plane, the MeNB may be connected to a Mobility Management Entity (MME) through an S1-MME, and the MeNB and the SeNB may be connected through an X2-C. On the user side, for the MCG bearer, the MeNB can connect to the Serving Gateway (S-GW) through the S1-U, and the SeNB does not participate in the data transmission to the user plane. In addition, for the split bearer, the MeNB can connect to the S-GW through the S1-U, and the MeNB can connect to the SeNB through the X2-U. For the SCG bearer, the SeNB can connect to the S-GW through the S1-U, and the MeNB does not participate in the data transmission to the user plane.

Currently, the 3rd Generation Partnership Project (3GPP) is discussing the dual connectivity switching enhancement of Release 13. Switching enhanced scenes can include one of the following:

Scene 1: A single connection to a dual-connected scenario, that is, the UE is a single connection on the source side and a dual connection on the target side, which is equivalent to Adding SeNB after handover;

Further, the above scenario of single connection to dual connectivity may further include one of the following:

(1) The UE is directly connected to the macro station eNB1 before the handover, and is dual-connected to the macro station eNB2 and the small base station eNB3 (ie, the SeNB) after the handover;

(2) The UE is directly connected to the small base station eNB1 before the handover, and is dual-connected to the macro station eNB2 and the small base station eNB1 (ie, the SeNB) after the handover;

(3) The UE is directly connected to the small base station eNB1 before handover, and is dual-connected to the macro station eNB3 and the small base station eNB2 (i.e., SeNB) after the handover.

Scenario 2: Dual-connected to dual-connected scenarios, that is, the UE is dual-connected on the source side and dual-connected on the target side.

Further, the above dual connectivity to the dual connectivity scenario may further include one of the following:

(1) The UE is dual-connected on the macro station eNB1 and the small base station eNB3 (ie, SeNB) before the handover, and is dual-connected on the macro station eNB2 and the small base station eNB3 (ie, SeNB) after the handover;

(2) The UE is dual-connected to the macro station eNB1 and the small base station eNB3 (i.e., SeNB) before the handover, and is switched to the dual-connected macro station eNB2 and the small base station eNB4 (i.e., SeNB) after the handover.

2 is a flow chart of signaling interaction based on the handover enhanced scenario shown in FIG. 1 according to the related art. As shown in FIG. 2, before handover, the UE is single-connected to eNB1 or dual-connected to eNB1 and SeNB. The specific operation process is as follows:

Step S202: The UE sends a measurement report to the eNB1, and the handover is triggered.

Step S204: The eNB1 sends a handover request message (HANDOVER REQUEST) to the eNB2. The eNB1 carries the measurement report of the UE in the handover request message, so that the eNB2 can use the measurement report to select an appropriate SeNB to continue the dual connection. When eNB1 sends an X2 Handover Request message, the timer TRELOCprep is turned on.

Step S206: If the eNB2 decides to add or reserve the SeNB, the eNB2 sends an SeNB Add Request message (SENB ADDITION REQUEST) to the SeNB. If the UE is dual-connected on the eNB1 and the SeNB before the handover, the eNB2 needs to carry the SeNB UE X2AP ID in the SeNB Add Request message to associate with the UE context established in the SeNB established by the eNB1. When the eNB2 transmits the SeNB Add Request message, the timer TDCprep is turned on.

Step S208: The SeNB returns a SeNB Add Request Acknowledgement message (SENB ADDITION REQUEST ACKNOWLEDGE) message to the eNB2. The SeNB may carry the data preamble address in the SeNB Add Request Acknowledgement message. When receiving the SeNB Add Request Acknowledgement message, eNB2 stops the timer TDCprep.

Step S210: The eNB2 replies to the handover request acknowledgement message (HANDOVER REQUEST ACKNOWLEDGE) to the eNB1. Upon receiving the handover request acknowledgement message, eNB1 stops the timer TRELOCprep.

Step S212: The eNB1 sends an SeNB Release Request message (SENB RELEASE REQUEST) to the SeNB to release the resources of the initial UE.

Step S214: The eNB1 sends an RRC Connection Reconfiguration message (RRC Connection Reconfiguration) to the UE. The SCG configuration information is carried in the RRC connection reconfiguration message.

Step S216: The UE performs random access to the eNB2.

Step S218: The UE returns an RRC Connection Reconfiguration Complete message (RRC Connection Reconfiguration Complete) to the eNB2.

Step S220: The UE performs random access to the SeNB.

Step S222: The RRC reconfiguration process is completed, and the eNB2 sends a SeNB RECONFIGURATION COMPLETE message to notify the SeNB that the requested configuration has been successfully applied to the UE.

Step S224: The eNB2 sends a Path Switch Request message (PATH SWITCH REQUEST) to the MME to request to convert the downlink GTP tunnel to a new GTP tunnel endpoint.

Step S226: The MME returns a path switch request acknowledgement message (PATH SWITCH REQUEST ACKNOWLEDGE) to the eNB2.

Step S228: The eNB2 sends a UE CONTEXT RELEASE message to the eNB1 to instruct the eNB1 to release the UE context-related radio and control plane resources.

Step S230: The eNB1 sends a UE context release request message to the SeNB to trigger release of the source side X2 UE related signaling connection in the SeNB.

In the above interaction process, the X2 handover preparation process and the SeNB addition preparation process may be two independent processes. The value of the timer set by the source eNB1 when transmitting the X2 handover request message to the target eNB2 may be unrelated to the value of the timer set by the target eNB2 when transmitting the SeNB addition request message to the SeNB. Therefore, it is possible to cause the dual connectivity switching enhancement scheme shown in FIG. 2 to fail.

Summary of the invention

The embodiment of the present invention provides a method and a device for processing a timer value, and a computer storage medium, to at least solve the value and target of a timer set by the source eNB1 when sending an X2 handover request message to the target eNB2 in the related art. The problem that the value of the timer set when the eNB2 sends the SeNB addition request message to the SeNB lacks relevance, resulting in the dual connection handover enhancement scheme not being implemented normally.

According to an aspect of the embodiments of the present invention, a method for processing a timer value is provided, including one of the following:

The source base station adjusts the value of the first timer according to the indication information sent by the target base station; the source base station sets the value of the first timer according to the configuration information sent by the operation management and maintenance; and the target base station sets the second timer according to the handover request message sent by the source base station. The target base station adjusts the value of the second timer according to the handover failure message sent by the source base station; the target base station sets the value of the second timer according to the configuration information sent by the operation management and maintenance.

Further, the source base station adjusts the value of the first timer according to the indication information, including: receiving, by the source base station, the target base station The indication information, where the indication information is that after the target base station acquires the first timer timeout, causing the handover failure, and the second timer set by itself is not timed out, after determining that the SeNB addition request response message is not received from the SeNB The source base station adjusts the value of the first timer according to the indication information.

Further, the setting, by the source base station, the value of the first timer according to the configuration information sent by the operation management and maintenance includes: the source base station acquires configuration information from the operation management and maintenance; and the source base station sets the value of the first timer according to the configuration information.

Further, the target base station sets the value of the second timer according to the handover request message, where the target base station receives the handover request message from the source base station, where the handover request message carries the value of the first timer set by the active base station; The base station assists in setting the value of the second timer according to the value of the first timer.

Further, the adjusting, by the target base station, the value of the second timer according to the handover failure message sent by the source base station includes: when the target base station acquires the first timer, causing the handover to fail, and the second timer set by itself is not timed out, When it is determined that the SeNB addition request response message is not obtained from the SeNB, the value of the second timer is adjusted.

Further, the target base station determines that the first timer set by the source base station times out causes the handover to be cancelled and the second timer that is set by itself does not time out, but fails to obtain the response message of the SeNB addition request from the SeNB, The SeNB adds a request cancellation message to the SeNB, where the SeNB adds a cancellation message carrying a cause value, and the cause value is used to indicate the reason for the cancellation.

Further, setting the value of the second timer according to the configuration information sent by the operation management and maintenance includes: the target base station acquires configuration information from the operation management and maintenance; and the target base station sets the value of the second timer according to the configuration information.

According to another aspect of the present invention, a processing device for a timer value is provided, including: an adjustment module; an adjustment module is applied to a source base station; and an adjustment module is configured to adjust the first timing according to the indication information sent by the target base station. The value of the first timer is set according to the configuration information sent by the operation management and maintenance; or the adjustment module is applied to the target base station; and the adjustment module is configured to set the second timer according to the handover request message sent by the source base station. Or: adjusting the value of the second timer according to the handover failure message sent by the source base station; or setting the value of the second timer according to the configuration information sent by the operation management and maintenance.

Further, the adjustment module includes: a receiving unit, configured to receive indication information from the target base station, where the indication information is that the second timer that is set by the target base station after the first timer expires causes the handover to fail and the second timer that is set by itself is not timed out. In this case, after determining that the SeNB addition request response message is not received from the secondary base station SeNB, the adjusting unit is configured to adjust the value of the first timer according to the indication information.

Further, the adjustment module includes: an obtaining unit configured to acquire configuration information from the operation management and maintenance; and an adjustment unit configured to set a value of the first timer according to the configuration information.

Further, the adjustment module includes: a receiving unit, configured to receive a handover request message from the source base station, where the handover request message carries a value of a first timer set by the active base station; and an adjustment unit is set according to the first timing The value of the device is used to assist in setting the value of the second timer.

Further, the adjustment module is configured to cause the handover to fail after acquiring the first timer set by the source base station If the second timer set by itself does not time out, the value of the second timer is adjusted when it is determined that the SeNB addition request response message is not obtained from the secondary base station SeNB.

Further, the adjusting module further includes: a sending module, configured to: when determining that the first timer set by the source base station times out causes the handover to be cancelled and the second timer that is set by itself does not time out, but fails to acquire the SeNB from the secondary base station SeNB In the case of adding the response message of the request, the SeNB adds a request cancellation message to the SeNB, where the SeNB addition cancellation message carries a cause value, and the cause value is used to indicate the reason for the cancellation.

Further, the adjustment module includes: an obtaining unit configured to acquire configuration information from the operation management and maintenance; and an adjustment unit configured to set a value of the second timer according to the configuration information.

According to still another aspect of an embodiment of the present invention, a computer storage medium storing computer executable instructions for processing the timer value described above is provided.

According to the embodiment of the present invention, the source base station adjusts the value of the first timer according to the indication information sent by the target base station; or the source base station sets the value of the first timer according to the configuration information sent by the operation management and maintenance; or the target base station according to the source The handover request message sent by the base station sets the value of the second timer; or the target base station adjusts the value of the second timer according to the handover failure message sent by the source base station; or the target base station sets the second timing according to the configuration information sent by the operation management and maintenance. The value of the device solves the related problem in the related art that the value of the timer set by the source eNB1 when transmitting the X2 handover request message to the target eNB2 is not related to the value of the timer set by the target eNB2 when transmitting the SeNB addition request message to the SeNB. Therefore, the problem that the dual-connection handover enhancement scheme cannot be implemented normally can be ensured, and the dual-connection handover enhancement scheme can be successfully implemented, and the handover preparation process of the source eNB1 switching to the target eNB2 due to the failure of the SeNB addition preparation process can also be avoided. failure.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a schematic diagram of a dual connectivity architecture according to the related art;

2 is a flow chart of signaling interaction based on the handover enhanced scenario shown in FIG. 1 according to the related art;

3 is a flowchart of a method for processing a timer value according to an embodiment of the present invention;

4 is a flowchart of a timer setting in dual connectivity switching enhancement according to a preferred embodiment of the present invention;

5 is a flowchart of a timer setting in dual connectivity switching enhancement according to a preferred embodiment of the present invention;

6 is a flowchart of a timer setting in dual connectivity switching enhancement according to a preferred embodiment 3 of the present invention;

FIG. 7 is a structural block diagram of a processing device for timer value according to an embodiment of the present invention; FIG.

FIG. 8 is a structural block diagram of a processing device for timer value according to a preferred embodiment of the present invention; FIG.

9 is a structural block diagram of a processing device for timer value according to a preferred embodiment 2 of the present invention;

10 is a structural block diagram of a processing device for timer value according to a preferred embodiment 3 of the present invention;

11 is a block diagram showing the structure of a processing device for timer value according to a preferred embodiment 4 of the present invention;

Figure 12 is a block diagram showing the structure of a processing device for timer value according to a preferred embodiment 5 of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order. The following various preferred embodiments, refer to the source base station eNB1, the target base station eNB2 refers; _Furthermore, T RELOCprep corresponds to the first timer, the second timer _T DCprep equivalent.

In this embodiment, a method for processing a timer value is provided. FIG. 3 is a flowchart of a method for processing a timer value according to an embodiment of the present invention. As shown in FIG. 3, the process includes the following steps:

Step S302, the source base station adjusts the value of the first timer according to the indication information sent by the target base station; or

The source base station sets the value of the first timer according to the configuration information sent by the operation management and maintenance; or

The target base station sets a value of the second timer according to the handover request message sent by the source base station; or

The target base station adjusts the value of the second timer according to the handover failure message sent by the source base station; or

The target base station adjusts the value of the second timer according to the configuration information sent by the operation management and maintenance.

Through the above steps, the source base station (eNB1) may adjust the value of the first timer according to the indication information sent by the target base station; or the source base station sets the value of the first timer according to the configuration information sent by the operation management and maintenance; or, the target base station ( The eNB 2) may set the value of the second timer according to the handover request message sent by the source base station; or the determination result of the target base station according to whether the first timer set by the source base station and the second timer set by itself are timed out, and whether the secondary base station is secondary or not The base station acquires the preset type response message to determine whether to adjust the value of the second timer; or the target base station adjusts the value of the second timer according to the configuration information sent by the operation management and maintenance, so that the source eNB1 sends the X2 handover request message to the target. The value of the timer set by the eNB2 and the value of the timer set by the target eNB2 when transmitting the SeNB addition request message to the SeNB are coordinated, thereby ensuring that both the source eNB1 and the target eNB2 set a reasonable timer value. This solves the timing set by the source eNB 1 when transmitting the X2 handover request message to the target eNB 2 in the related art. The value of the device is not related to the value of the timer set by the target eNB 2 when transmitting the SeNB addition request message to the SeNB, thereby causing the problem that the dual connectivity handover enhancement scheme cannot be implemented normally, thereby ensuring successful implementation of the dual connectivity handover enhancement scheme. At the same time, it is also possible to avoid the failure of the handover preparation process in which the source eNB1 switches to the target eNB 2 due to the failure of the SeNB addition preparation process.

Preferably, in step S302, the source base station adjusting the value of the first timer according to the indication information may include the following steps:

Step S1: The source base station receives the indication information from the target base station, where the indication information is determined in the case that the target base station acquires the first timer timeout, causing the handover failure, and the second timer set by itself is not timed out. Is sent after receiving the SeNB add request response message from the SeNB;

Step S2: The source base station adjusts the value of the first timer according to the indication information.

In a preferred embodiment, eNB1 sends an X2 Handover Request message to eNB2 to initiate a handover preparation procedure. When eNB1 sends an X2 Handover Request message, the timer T _{RELOCprep is} turned on. Since the eNB1 has not received the response message of the handover request message from the eNB2 before the timer T _RELOCprep expires, the eNB1 transmits a handover cancel message (HANDOVER CANCEL) to initially cancel the cancellation procedure, thereby canceling the handover preparation procedure with the eNB2. When the timer _T RELOCprep eNB2 known since the time-out caused by cancellation of the handover information, provided at the timer _T DCprep eNB2 does not expire, but still did not get the response message to SeNB addition request from the SeNB, eNB2 may send the indication information to be eNB1 The eNB1 is caused to adjust the value of the set T _RELOCprep .

Preferably, in step S302, setting the value of the first timer according to the configuration information sent by the operation management and maintenance by the source base station may include the following operations:

Step S3: The source base station obtains configuration information from operation management and maintenance;

Step S4: The source base station sets the value of the first timer according to the configuration information.

In a preferred embodiment, the operation management maintenance can reasonably configure the value of the timer T _RELOCprep when the source eNB 1 transmits the X2 handover request message.

Preferably, in step S302, setting the value of the second timer according to the handover request message by the target base station may include the following steps:

Step S5: The target base station receives the handover request message from the source base station, where the handover request message carries the value of the first timer set by the active base station;

Step S6: The target base station assists in setting the value of the second timer according to the value of the first timer.

In a preferred embodiment, source eNB1 may send an X2 Handover Request message to eNB2 to initiate a handover preparation procedure. When eNB1 sends an X2 Handover Request message, the timer T _{RELOCprep is} turned on. The eNB1 carries the value of the set T _RELOCprep in the X2 handover request message sent to the eNB2. The eNB2 transmits an SeNB Add Request message to the SeNB to initiate an SeNB addition preparation process. When eNB2 sends a SeNB Add Request message, the timer T _{DCprep is} turned on. eNB2 when setting the timer _T DCprep, need to eNB2 acquired in step S404 _T RELOCprep value, to set a reasonable assist value _T DCprep.

Preferably, in step S302, the target base station adjusting the value of the second timer according to the handover failure message sent by the source base station may include the following steps:

Step S7: The target base station adjusts the second timer when it is determined that the SeNB adds the request response message from the SeNB, if the first timer expires, and the second timer that is set by itself is not exceeded. value.

In a preferred implementation process, the target base station determines that the first timer set by the source base station times out, causing the handover to take And if the second timer that is set by itself does not time out, but fails to obtain the response message of the SeNB addition request from the SeNB, the SeNB adds a request cancellation message to the SeNB, where the SeNB adds the cancellation message carrying the cause value. The reason value is used to indicate the reason for the cancellation.

Preferably, in step S302, setting the value of the second timer according to the configuration information sent by the operation management and maintenance by the target base station may include the following operations:

Step S8: The target base station acquires configuration information from operation management and maintenance;

Step S9: The target base station sets the value of the second timer according to the configuration information.

In a preferred embodiment, the operation management maintenance can reasonably configure the value of the timer T _DCprep when the target eNB 2 transmits the SeNB Add Request message.

The above preferred implementation process will be further described below in conjunction with the following preferred embodiments.

Preferred embodiment 1

4 is a flow chart showing the setting of a timer in a dual connectivity handover enhancement according to a preferred embodiment of the present invention. As shown, the preferred embodiment of the four cases presented primarily _T RELOCprep eNB2 when setting the timer _T DCprep (second timer corresponding to the above), according to the handover message carries the eNB1 sends a request (corresponding to the first timing The value of the device is used to assist in setting a reasonable T _DCprep value, thereby ensuring that the dual connectivity switching enhancement scheme as shown in FIG. 2 described above can be successfully implemented. The interaction process can include the following steps:

Step S402: The UE sends a measurement report to the eNB1, and the handover is triggered.

Step S404: The eNB1 sends an X2 handover request message to the eNB2 to initially switch the preparation process. When eNB1 sends an X2 Handover Request message, the timer T _{RELOCprep is} turned on. The eNB1 carries the value of the set T _RELOCprep in the X2 handover request message sent to the eNB2.

Step S406: The eNB2 sends an SeNB Add Request message to the SeNB to initiate an SeNB addition preparation process. When eNB2 sends a SeNB Add Request message, the timer T _{DCprep is} turned on. eNB2 when setting the timer _T DCprep, need to eNB2 acquired in step S404 _T RELOCprep value, to set a reasonable assist value _T DCprep.

Incidentally, the value of the timer _T DCprep set smaller than the value of the timer _T RELOCprep need of.

Step S408: The SeNB replies to the SeNB Add Request Acknowledgement message message to the eNB2. When receiving the SeNB Add Request Acknowledgement message, eNB2 stops the timer T _DCprep .

Step S410: The eNB2 replies to the handover request acknowledgement message to the eNB1. Upon receiving the handover request acknowledgement message, eNB1 stops the timer T _RELOCprep .

Step S412: The eNB1 sends an SeNB release request message to the SeNB to initiate resource release of the UE.

Step S414: The eNB1 sends an RRC connection reconfiguration message to the UE.

Step S416: The UE performs random access to the eNB2.

Step S418: The UE returns an RRC Connection Reconfiguration Complete message to the eNB2.

Step S420: The UE performs random access to the SeNB.

Step S422: The RRC reconfiguration process is completed, and the eNB2 sends an SeNB reconfiguration complete message to notify the SeNB that the requested configuration has been successfully applied to the UE.

Step S424: The eNB2 sends a path switch request message to the MME to request to convert the downlink GTP tunnel to a new GTP tunnel endpoint.

Step S426: The MME returns a path switch request acknowledgement message to the eNB2.

Step S428: The eNB2 sends a UE context release request message to the eNB1 to instruct the eNB1 to release the UE context-related radio and control plane resources.

Step S430: The eNB1 sends a UE context release request message to the SeNB to trigger release of the source side X2 UE related signaling connection in the SeNB.

Preferred embodiment two

FIG. 5 is a flowchart of a timer setting in dual connectivity switching enhancement according to a preferred embodiment 2 of the present invention. As shown in FIG. 5, in the preferred embodiment, it is assumed the value of the timer is set when eNB2 transmits addition request message _SeNB T DCprep larger than the value of the timer _T RELOCprep set when eNB1 transmits the X2 handover request message. In the preferred implementation process, the information that causes the handover failure based on the timer T _RELOCprep timeout notified by the eNB1 and the set timer T _DCprep that the eNB2 itself _{knows are} not timed out, but the request for adding the SeNB is not obtained from the SeNB. In response to the information of the message, the value of the set T _DCprep is adjusted, so that the dual-connection handover enhancement scheme as shown in FIG. 2 above can be successfully implemented; or the source eNB1 can be prevented from being switched to due to the failure of the SeNB addition preparation process. The handover preparation process of the target eNB 2 also fails. The specific information interaction process is as follows:

Step S502: The UE sends a measurement report to the eNB1, and the handover is triggered.

Step S504: The eNB1 sends an X2 handover request message to the eNB2 to initially switch the preparation process. When eNB1 sends an X2 Handover Request message, the timer T _{RELOCprep is} turned on.

Step S506: The eNB2 sends an SeNB Add Request message to the SeNB to initialize the SeNB adding preparation process. When eNB2 sends a SeNB Add Request message, the timer T _{DCprep is} turned on.

Step S508: Since the eNB1 has not received the response message of the handover request message from the eNB2 before the timer T _RELOCprep expires, the eNB1 sends a handover cancel message (HANDOVER CANCEL) to initiate the handover cancellation procedure, thereby canceling the relationship with the eNB2. Switch the preparation process. The eNB1 carries a reason value in the handover cancel message sent to the eNB2, and the cause value is set to the timer T _RELOCprep timeout.

Step S510: The eNB2 sends an SeNB Add Cancellation message to the SeNB. The eNB2 carries the appropriate cause value in the SeNB Add Cancellation message to indicate the reason for the cancellation. In the preferred embodiment, the cause value may be the timer T _RELOCprep timeout.

Step S512: When the timer _T RELOCprep eNB2 known since the time-out caused by cancellation of the handover information, the timer set at _T DCprep eNB2 does not expire, but still did not get the response message from SeNB addition request from SeNB at the above step, this The eNB2 can adjust the value of the set T _DCprep , for example, reduce the value of the set timer T _DCprep , and can ensure that the dual connectivity handover enhancement scheme as shown in FIG. 2 can be successfully implemented; or, the SeNB can be avoided. The handover preparation process in which the preparation process fails and causes the source eNB1 to handover to the target eNB 2 also fails.

It should be noted that the above step S510 and the above step S512 do not have a sequence of execution.

Preferred embodiment three

6 is a flow chart of a timer setting in dual connectivity switching enhancement in accordance with a preferred embodiment of the present invention. 6, in the preferred embodiment, the assumed value of the timer set when eNB2 SeNB transmits addition request message is greater than the value of the timer _T DCprep _T RELOCprep is set when eNB1 transmits the X2 handover request message. The preferred embodiment is mainly based on the timer T _RELOCprep timeout notified by the eNB1 to cause the handover failure information and the set timer T _DCprep that the eNB 2 itself _{knows has} not timed out, but still has not obtained the response message for adding the request to the SeNB from the SeNB. The information, the eNB2 sends the indication information to the eNB1 to prompt the eNB1 to adjust the value of the set T _RELOCprep , so that the dual connectivity handover enhancement scheme as shown in FIG. 2 can be successfully implemented; or, the SeNB addition preparation process may be avoided. The handover preparation process that causes the source eNB1 to handover to the target eNB 2 also fails. The specific information interaction process is as follows:

Step S602: The UE sends a measurement report to the eNB1, and the handover is triggered.

Step S604: The eNB1 sends an X2 handover request message to the eNB2 to initially switch the preparation process. When eNB1 sends an X2 Handover Request message, the timer T _{RELOCprep is} turned on.

Step S606: The eNB2 sends an SeNB Add Request message to the SeNB to initiate an SeNB addition preparation process. When eNB2 sends a SeNB Add Request message, the timer T _{DCprep is} turned on.

Step S608: Since the eNB1 has not received the response message of the handover request message from the eNB2 before the timer T _RELOCprep expires, the eNB1 sends a handover cancel message (HANDOVER CANCEL) to initiate the handover cancellation procedure, thereby canceling the handover preparation with the eNB2. process. The eNB1 carries a reason value in the handover cancel message sent to the eNB2, and the cause value is set to the timer T _RELOCprep timeout.

Step S610: The eNB2 sends an SeNB Add Cancellation message to the SeNB. The eNB2 carries the appropriate cause value in the SeNB Add Cancellation message to indicate the reason for the cancellation. In the preferred embodiment, the cause value may be the timer T _RELOCprep timeout.

Step S612: When eNB2 known from the above step since the timeout timer _T RELOCprep result of a handoff cancel message, the timer set at _T DCprep eNB2 does not expire, but still did not get the response message to SeNB addition request from the SeNB, eNB2 The indication information may be sent to the eNB1 to cause the eNB1 to adjust the value of the set T _RELOCprep .

It should be noted that the above steps S610 and S612 have no sequential execution order.

Step S614: eNB1 adjusts the value of the set T _RELOCprep , for example, appropriately increases the value of the timer T _RELOCprep , so that it can be ensured that the dual-connection handover enhancement scheme as shown in FIG. 2 described above can be successfully implemented; or, The handover preparation procedure in which the SeNB addition preparation procedure fails and causes the source eNB1 to handover to the target eNB 2 also fails.

Preferred embodiment four

As another preferred embodiment of the present invention, an operation management and maintenance (Operation Administration and Maintenance, abbreviated as OAM) arranged reasonably eNB1 transmits the value of timer _T RELOCprep the X2 handover request message and eNB2 transmits addition request message to SeNB The value of the timer T _DCprep can be ensured that the dual-connection handover enhancement scheme as shown in FIG. 2 can be successfully implemented; or the handover preparation process of the source eNB1 to the target eNB 2 due to the failure of the SeNB addition preparation process can be avoided. A failure has occurred.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, The optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

In the embodiment, a processing device for the value of the timer is provided. The device is configured to implement the foregoing embodiments and the preferred embodiments, and details are not described herein. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

FIG. 7 is a structural block diagram of a processing device for timer value according to an embodiment of the present invention. As shown in FIG. 7, the device includes: an adjustment module 10; and the adjustment module 10 is applied to a source base station or a target base station.

When the adjustment module 10 is applied to the source base station, the adjustment module 10 is configured to adjust the value of the first timer according to the indication information sent by the target base station; or set the value of the first timer according to the configuration information sent by the operation management and maintenance.

When the adjustment module 10 is applied to the target base station, the adjustment module 10 is configured to set the value of the second timer according to the source base station sending the handover request message; or adjust the value of the second timer according to the handover failure message sent by the source base station; or The value of the second timer is set according to the configuration information sent by the operation management maintenance.

The apparatus according to FIG. 7 solves the timing set by the source eNB 1 when the source eNB 1 sends the X2 handover request message to the target eNB 2 and the timing set by the target eNB 2 when sending the SeNB addition request message to the SeNB. The lack of correlation of the value of the device leads to the problem that the dual-connection handover enhancement scheme cannot be implemented normally, thereby ensuring the successful implementation of the dual-connection handover enhancement scheme, and also avoiding the handover of the source eNB1 to the target eNB2 due to the failure of the SeNB addition preparation process. The switch preparation process failed.

FIG. 8 is a structural block diagram of a processing device for taking a value of a timer according to a preferred embodiment of the present invention. As shown in FIG. 8, the adjusting module 10 may further include: a receiving unit 100 configured to receive indication information from a target base station. ,among them, The indication information is sent after the target base station acquires the first timer timeout causing the handover failure and the second timer set by itself does not time out, after determining that the SeNB addition request response message is not received from the secondary base station SeNB; The unit 102 is configured to adjust the value of the first timer according to the indication information.

9 is a block diagram of a processing device for processing a timer according to a preferred embodiment of the present invention. As shown in FIG. 9, the adjustment module 10 may further include: an obtaining unit 104, configured to obtain configuration information from operation management and maintenance; The adjusting unit 106 is configured to set the value of the first timer according to the configuration information.

10 is a structural block diagram of a processing device for timer value according to a preferred embodiment 3 of the present invention. As shown in FIG. 10, the adjustment module 10 may further include: a receiving unit 108 configured to receive a handover request from a source base station. The message, wherein the handover request message carries the value of the first timer set by the active base station; and the adjusting unit 110 is configured to assist to set the value of the second timer according to the value of the first timer.

Preferably, the adjusting module 10 is configured to determine that the second timer that is set by the source base station fails to be timed out and the second timer that is set by itself does not time out, and is determined to fail to obtain the secondary base station SeNB. When the SeNB adds the response message of the request, the value of the second timer is adjusted.

11 is a block diagram of a processing device for processing a timer according to a preferred embodiment of the present invention. As shown in FIG. 11, the processing device for the value of the timer may further include: a sending module 20, configured to determine the source When the first timer set at the base station times out causes the handover to be cancelled and the second timer set by itself is not timed out, but fails to acquire the response message of the SeNB addition request from the secondary base station SeNB, the SeNB adds the request cancellation request to the SeNB. The message, wherein the SeNB addition cancel message carries a cause value, and the cause value is used to indicate the reason for the cancellation.

FIG. 12 is a structural block diagram of a processing device for a timer value according to a preferred embodiment 5 of the present invention. As shown in FIG. 12, the adjustment module 10 may further include: an obtaining unit 112 configured to obtain configuration information from operation management and maintenance; The adjusting unit 114 is set to be set to the value of the second timer according to the configuration information.

It should be noted that each of the above modules and each unit set in each module may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, the above modules are all located in the same processor; Alternatively, the above modules are located in multiple processors.

Embodiments of the present invention also provide a storage medium. Optionally, in this embodiment, the foregoing storage medium may be configured to store program code for performing each step in the processing method of the timer value.

In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. The device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, such as: multiple units or components may be combined, or Can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, or direct coupling, or communication connection of the components shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, and may be electrical, mechanical or other forms. of.

The units described above as separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place or distributed to multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated into one unit; The unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to the program instructions. The foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing storage medium includes: a mobile storage device, a random access memory (RAM), a read-only memory (ROM), a magnetic disk, or an optical disk. A medium that can store program code.

Alternatively, the above-described integrated unit of the present invention may be stored in a computer readable storage medium if it is implemented in the form of a software function module and sold or used as a standalone product. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product, which is stored in a storage medium and includes a plurality of instructions for making A computer device (which may be a personal computer, server, or network device, etc.) performs all or part of the methods described in various embodiments of the present invention. The foregoing storage medium includes various media that can store program codes, such as a mobile storage device, a RAM, a ROM, a magnetic disk, or an optical disk.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

As described above, the method and apparatus for processing timer values and the computer storage medium provided by the embodiments of the present invention have the following beneficial effects: the dual connectivity handover enhancement scheme can be successfully implemented, and the SeNB addition preparation can also be avoided. The handover preparation process that causes the source eNB1 to handover to the target eNB2 fails.

Claims

A method for processing a timer value, including one of the following:

The source base station adjusts the value of the first timer according to the indication information sent by the target base station;

The source base station sets the value of the first timer according to the configuration information sent by the operation management and maintenance;

The target base station sets a value of the second timer according to the handover request message sent by the source base station;

The target base station adjusts the value of the second timer according to the handover failure message sent by the source base station;

The target base station sets the value of the second timer according to the configuration information sent by the operation management and maintenance.
The method according to claim 1, wherein the adjusting, by the source base station, the value of the first timer according to the indication information comprises:

The source base station receives the indication information from the target base station, where the indication information is that the second timer that is set by the target base station after the first timer expires causes the handover to fail and is set by itself In case of timeout, it is determined after failing to receive the SeNB addition request response message from the secondary base station SeNB;

The source base station adjusts a value of the first timer according to the indication information.
The method according to claim 1, wherein the setting, by the source base station, the value of the first timer according to the configuration information sent by the operation management and maintenance comprises:

The source base station acquires the configuration information from the operation management and maintenance;

The source base station sets a value of the first timer according to the configuration information.
The method according to claim 1, wherein the setting, by the target base station, the value of the second timer according to the handover request message comprises:

The target base station receives the handover request message from the source base station, where the handover request message carries a value of a first timer set by the source base station;

The target base station assists setting the value of the second timer according to the value of the first timer.
The method according to claim 1, wherein the adjusting, by the target base station, the value of the second timer according to the handover failure message sent by the source base station comprises:

When the target base station obtains that the first timer expires and the handover fails, and the second timer that is set by itself does not time out, when determining that the SeNB addition request response message is not obtained from the secondary base station SeNB, Adjusting the value of the second timer.
The method according to claim 2 or 5, wherein the target base station determines that the first timer set by the source base station times out causes the handover to be cancelled and the second timer set by itself does not time out, but not And the SeNB adds a request cancellation message to the SeNB, where the SeNB addition request message carries a cause value, where the cause value is used to indicate that the SeNB adds a request cancellation message to the SeNB. cancel the reason.
The method according to claim 1, wherein the setting, by the target base station, the value of the second timer according to the configuration information sent by the operation management and maintenance comprises:

Obtaining, by the target base station, the configuration information from the operation management and maintenance;

The target base station sets a value of the second timer according to the configuration information.
A processing device for taking a value of a timer, comprising: an adjustment module;

The adjusting module is applied to the source base station; the adjusting module is configured to adjust the value of the first timer according to the indication information sent by the target base station; or set the value of the first timer according to the configuration information sent by the operation management and maintenance; or ,

The adjustment module is applied to the target base station; the adjustment module is configured to set a value of the second timer according to the handover request message sent by the source base station; or adjust the value of the second timer according to the handover failure message sent by the source base station; Alternatively, the value of the second timer is set according to the configuration information sent by the operation management maintenance.
The apparatus of claim 8 wherein said adjustment module comprises:

a receiving unit, configured to receive the indication information from the target base station, where the indication information is a second timer that is set by the target base station when the first timer expires, causing a handover failure and setting itself If it is not timed out, it is sent after determining that the SeNB addition request response message is not received from the secondary base station SeNB;

And an adjusting unit, configured to adjust a value of the first timer according to the indication information.
The apparatus of claim 8 wherein said adjustment module comprises:

An obtaining unit, configured to obtain the configuration information from the operation management and maintenance;

And an adjusting unit, configured to set a value of the first timer according to the configuration information.
The apparatus of claim 8 wherein said adjustment module comprises:

a receiving unit, configured to receive the handover request message from the source base station, where the handover request message carries a value of a first timer set by the source base station;

The adjusting unit is configured to assist in setting the value of the second timer according to the value of the first timer.
The apparatus according to claim 8, wherein the adjustment module is configured to, in the case that acquiring a first timer set by the source base station to cause a handover failure and the second timer set by itself does not time out, When it is determined that the SeNB addition request response message is not acquired from the secondary base station SeNB, the value of the second timer is adjusted.
The device according to claim 9 or 12, wherein the device further comprises:

And a sending module, configured to: when determining that the first timer set by the source base station times out causes the handover to be cancelled and the second timer that is set by itself does not time out, but fails to acquire the response of the SeNB addition request from the secondary base station SeNB In the case of the message, the SeNB adds a request cancellation message to the SeNB, where the SeNB addition cancel message carries a cause value, and the cause value is used to indicate the reason for the cancellation.
The apparatus of claim 8 wherein said adjustment module comprises:

An obtaining unit, configured to obtain the configuration information from the operation management and maintenance;

And an adjusting unit configured to set a value of the second timer according to the configuration information.
A computer storage medium storing computer executable instructions for performing the processing method of the timer value according to any one of claims 1 to 7.