CN101500322B - Resource releasing method - Google Patents

Resource releasing method Download PDF

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Publication number
CN101500322B
CN101500322B CN2008100070812A CN200810007081A CN101500322B CN 101500322 B CN101500322 B CN 101500322B CN 2008100070812 A CN2008100070812 A CN 2008100070812A CN 200810007081 A CN200810007081 A CN 200810007081A CN 101500322 B CN101500322 B CN 101500322B
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radio network
network subsystem
source
core net
message
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CN101500322A (en
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刘霖
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ZTE Corp
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ZTE Corp
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Priority to PCT/CN2009/070332 priority patent/WO2009097817A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/29—Control channels or signalling for resource management between an access point and the access point controlling device

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a resource releasing method, comprising the following steps: an objective wireless network subsystem sends a conversion completing message to a core network after a user facility is converted from a source wireless network subsystem to the objective wireless network subsystem; and the core network sends a resource releasing message to the source wireless network subsystem, wherein the resource releasing message is used for indicating the source wireless network subsystem to release resources. The invention solves the problem of inconsistency between the resource releasing process and the other processes in the relevant technique by the way that the core network informs the wireless network subsystem of releasing resources, thereby being capable of reducing the treatment complexity of the wireless network subsystem.

Description

Method for releasing resource
Technical field
The present invention relates to switching flow between the network element in the GSM, particularly, relate to the method for releasing resource that is used for switching flow between this network element.
Background technology
Switching between network element is a basic procedure that guarantees user mobility in the GSM; (the Universal Mobile Telecommunications System of UMTS system; Global system for mobile communications; Be 3-G (Generation Three mobile communication system)) in SRNS (Serving RadioNetwork Subsystem; SRNS Serving Radio Network Subsystem) switching between is called as SRNS reorientation (SRNS Relocation), and SRNS reorientation flow process comprises the repeatedly interacting message between RNS and the core net, flow process more complicated.
For this reason, 3GPP (3rd Generation Partnership Project, third generation collaborative project) tissue has been introduced the SRNS reorientation flow process that strengthens, to reduce the interacting message between RNS and the core net.Fig. 1 shows the reciprocal process of the SRNS reorientation flow process of enhancing, and is as shown in Figure 1, specifically comprises following processing:
Decision lets subscriber equipment (User Equipment abbreviates UE as) switch to the RNC (Target RNC) of an adjacency 101. source radio network controller (Radio Network Controller abbreviates RNC as) is according to measurement report;
102. source RNC initiates handoff request message to Target RNC, notification target RNC switches preparation;
103. it is ready that Target RNC switches, RNC returns handoff request acknowledgment message to the source, to confirm and can switch to source RNC;
104. source RNC sends the physical channel reconfiguration message to UE, order UE begins to switch;
Finish 105.UE switch, success be linked into Target cell after, send physical channel to Target RNC and reshuffle completion message;
106. Target RNC sends reorientation to SGSN (Serving GPRS Support Node, the GPRS Support Node of service) and accomplishes message, sub-district, notice SGSN UE place changes;
Accomplish response message as affirmation 107.SGSN send out reorientation to Target RNC;
Discharge message related to resources 108. Target RNC sends to source RNC, notification source RNC discharges resource.
In above-mentioned flow process; Switch after the completion, the resource release operations of source RNC is to discharge message related to resources through the RNSAP (Radio Network Subsystem ApplicationPart, Radio Network Subsystem Application Part) that Target RNC sends to trigger; The dispose procedure of RNC resource is different in this and other flow process; In other flow process, the resource release operations of RNC all is to trigger through the Iu release command message that SGSN sends, the RNC processing complexity that this can increase undoubtedly.
In the switching flow of EPS (Evolved Packet System, the grouping system of evolution) system, also there is similar problem.Fig. 2 shows the sketch map of the switching flow of EPS system.As shown in Figure 2, comprise following processing:
201. source eNB carries out handover decisions according to the measurement report of UE, the switching between the eNB is initiated in decision;
202. source eNB initiates handoff request message to target eNB, notification target eNB switches preparation, also will carry the eNB UES1AP sign of local terminal in the message;
203. it is ready that target eNB is switched, and returns handoff request to source eNB and reply, and confirms and can switch to source eNB;
204. source eNB sends switching command message to UE, order UE begins to switch;
Finish 205.UE switch, success be linked into Target cell after, send switch acknowledgment message to target eNB;
206. target eNB is to MME transmit path conversion request message, sub-district, notice MME UE place changes;
207.MME to target eNB return path conversion response message;
Discharge message related to resources 208. target eNB is sent to source eNB, notification source RNC discharges resource.
In the above-mentioned flow process; After switching completion; The process that source eNB discharges resource is to trigger through the release message related to resources that target eNB is sent; And in other flow process, the resource release operations of source eNB all is to trigger through the release command message that MME sends, and this can increase the processing complexity of eNB undoubtedly.
Therefore as stated, present repositioning process that adopts or the resource release flow in the handoff procedure have increased the processing complexity of wireless network side because inconsistent with the resource release flow in other flow process, need a kind of new resource release flow.
Summary of the invention
Consider the repositioning process that exists in the correlation technique or the resource release flow in the handoff procedure because inconsistent with other flow process, thus caused increasing wireless network side processing complexity problem and the present invention is proposed.For this reason, the present invention aims to provide a kind of method for releasing resource, discharges the consistency that resource guarantees resource release flow and other flow process through making core net notification source RNS.
According to an aspect of the present invention, a kind of method for releasing resource is provided, has been used for notification source RNS release resource after the switching of source radio network subsystem and target radio network subsystem is accomplished.
Method for releasing resource according to the embodiment of the invention comprises: after subscriber equipment was accomplished the switching from the source radio network subsystem to the target radio network subsystem, the target radio network subsystem sent handoff completion message to core net; Core net is sent resource release message to the source radio network subsystem, and wherein, resource release message is used to indicate the source radio network subsystem to discharge resource.
Wherein, carry the identification information and the connection identifier information of source radio network subsystem in the above-mentioned handoff completion message.
Wherein, before the source radio network subsystem sent resource release message, further comprise: core net was obtained the identification information and the connection identifier information of carrying in the handoff completion message in core net; Core net is confirmed the source radio network subsystem according to sign, and confirms that according to connection identifier information relevant signaling connects.
Wherein, in said method, before accomplishing switching, further comprise following processing: the source radio network subsystem sends handoff request message to the target radio network subsystem, and in handoff request message, carries connection identifier information.
Preferably, above-mentioned target radio network subsystem is specially to the operation of core net transmission handoff completion message: the target radio network controller of target radio network subsystem sends reorientation completion message to the Serving GPRS Support Node of core net.Above-mentioned core net is specially to the operation that the source radio network subsystem sends resource release message: the Serving GPRS Support Node of core net sends the Iu release command to the source radio network controller of source radio network subsystem.
Wherein, above-mentioned connection identifier information is Iu signaling connection identifier.
Perhaps, preferably, the operation that the target radio network subsystem sends handoff completion message to core net is specially: the target enode b of target radio network subsystem is to the Mobility Management Entity transmit path conversion request message of core net.Above-mentioned core net is specially to the operation that the source radio network subsystem sends resource release message: the Mobility Management Entity of core net sends the release command of S1 customer equipment context to the source of source radio network subsystem enode b.
Wherein, above-mentioned connection identifier information is source enode b subscriber equipment S1 AP sign.
As stated,, discharge resource, solved the resource release flow and the inconsistent problem of other flow process that exist in the correlation technique, thereby can reduce the complexity that wireless network side is handled through making core net notification source RNS through the present invention.
Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used to explain the present invention with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the interaction diagrams of the SRNS reorientation flow process that strengthens in the UMTS system according to correlation technique;
Fig. 2 is the interaction diagrams according to the switching flow in the EPS system of correlation technique;
Fig. 3 is the flow chart according to the method for releasing resource of the embodiment of the invention;
Fig. 4 is the interaction diagrams according to the embodiment one of the method for releasing resource of the embodiment of the invention;
Fig. 5 is the interaction diagrams according to the embodiment two of the method for releasing resource of the embodiment of the invention.
Embodiment
As stated; For the SRNS switching flow in the UMTS system of present employing (promptly; SRNS reorientation flow process) and the switching flow in the EPS system; Because its resource release operations and the resource release operations in other flow processs of switching after accomplishing are inconsistent, therefore may increase the processing complexity of wireless network.
Given this, the invention provides a kind of method for releasing resource, be used for notification source SRNS release resource after accomplishing in source radio network subsystem (SRNS) and the switching of target SRNS.
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
Fig. 3 shows the flow chart according to the method for releasing resource of the embodiment of the invention.As shown in Figure 3, comprise following processing according to the method for releasing resource of the embodiment of the invention:
Step S302, after UE accomplished the switching from source SRNS to target SRNS, target SRNS sent handoff completion message to core net (Core Network abbreviates CN as);
Step S304, CN sends resource release message to source SRNS, and wherein, resource release message is used to indicate source SRNS to discharge resource.
Wherein, before step S302, also comprise following processing: source SRNS sends handoff request message to target SRNS, and in handoff request message, carries connection identifier information.
Further, carry the identification information of active SRNS and the connection identifier information of in handoff request message, carrying in the above-mentioned handoff completion message.
In step S304, before source SRNS sent resource release message, further comprise: CN obtained the identification information and the connection identifier information of carrying in the handoff completion message at CN; CN confirms source SRNS according to sign, and confirms that according to connection identifier information relevant signaling connects.
The said method that the embodiment of the invention provides both can be applicable to the SRNS reorientation flow process among the UMTS, can be applicable to the switching flow in the EPS system again.Below will come this is described through embodiment respectively.
Embodiment one: the SRNS reorientation flow process among the UMTS
In this embodiment; Target SRNS is specially to the operation that CN sends handoff completion message among the step S302: the target radio network controller of target SRNS (Radio NetworkController; Abbreviate RNC as) to Serving GPRS Support Node (the ServingGPRS Support Node of CN; Abbreviate SGSN as) send reorientation completion message, the connection identifier information of carrying in this message can be Iu signaling connection identifier.
Correspondingly, CN is specially to the operation that source SRNS sends resource release message among the step S304: the SGSN of core net sends the Iu release command to the source of source SRNS RNC.
Fig. 4 shows the concrete operations of this embodiment.As shown in Figure 4, comprise following processing:
401. source RNC carries out handover decisions according to the measurement report of UE, the switching between the RNC is initiated in decision;
402. source RNC initiates RELOCATION REQUEST message to Target RNC, notification target RNC switches preparation, also need carry the Iu signaling connection identifier of local terminal in the message;
403. it is ready that Target RNC switches, and returns re-positioning request to source RNC and reply, that is, confirm and can switch to source RNC;
404. source RNC sends the physical channel reconfiguration message to UE, order UE begins to switch;
Finish 405.UE switch, success be linked into Target cell after, send physical channel to Target RNC and reshuffle and accomplish message and confirm;
406. Target RNC sends reorientation to SGSN and accomplishes message, sub-district, notice SGSN UE place changes, and need carry RNC sign in source in the message, and the Iu signaling connection identifier that brings of source RNC;
Accomplish response message 407.SGSN return reorientation to Target RNC;
408. simultaneously, SGSN is according to source RNC sign, and the Iu signaling connection identifier of source RNC finds source RNC to be connected with relevant Iu signaling, to source RNC initiation Iu release command;
409. after source RNC has discharged corresponding resource, return Iu to SGSN and discharge completion, this switching flow successfully finishes.
In this embodiment; Discharge resource through making SGSN send Iu release command notification source RNC; Can be so that the resource release flow in the SRNS reorientation flow process be consistent with resource release flow in other flow processs, thus the processing complexity of wireless network side can be reduced.
Embodiment two: the switching flow in the EPS system
In this embodiment; Target SRNS is specially to the operation that CN sends handoff completion message among the step S302: target eNB is to the MME of CN (Mobility ManagementEntity; Mobility Management Entity) transmit path conversion request message, the connection identifier information of carrying in this path switching request information are source eNB UE S1 AP sign (source enode b subscriber equipment S1 AP sign).
Correspondingly, in step S304, CN is specially to the operation that source SRNS sends resource release message: the MME of CN sends the release command of S1 UE context to source eNB.
Fig. 5 shows the concrete operations of this embodiment.As shown in Figure 5, comprise following processing:
501. source eNB carries out handover decisions according to the measurement report of UE, the switching between the eNB is initiated in decision;
502. source eNB initiates handoff request message to target eNB, notification target eNB switches preparation, also will carry the eNB UE S1 AP sign of local terminal in the message;
503. it is ready that target eNB is switched, and returns handoff request to source eNB and reply, that is, confirm and can switch to source eNB;
504. source eNB sends switching command message to UE, order UE begins to switch;
Finish 505.UE switch, success be linked into Target cell after, send switch acknowledgment message to target eNB;
506. target eNB is to MME transmit path conversion request message, sub-district, notice MME UE place changes, and will carry eNB sign in source in the message, source eNB UE S1 AP sign;
507.MME to target eNB return path conversion response message;
508.MME find source eNB according to source eNB sign, send the release command of S1 UE context to source eNB;
509. source eNB sends S1 UE context and discharges completion after accomplishing corresponding resource release, this switching flow completes successfully.
In this embodiment; Discharge resource through making MME send S1 UE context release command notification source eNB; Can be so that the resource release flow in the EPS system switching flow be consistent with resource release flow in other flow processs, thus the processing complexity of wireless network side can be reduced.
As stated; The technical scheme that provides by means of the embodiment of the invention; Through making core net notification source RNS discharge resource; Than correlation technique, can solve the resource release flow and the inconsistent problem of other flow process that exist in the correlation technique, thereby can reduce the complexity that wireless network side is handled.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (8)

1. method for releasing resource; Be used for notification source RNS release resource after the switching of source radio network subsystem and target radio network subsystem is accomplished; Wherein, Switching to not through the direct switching of core net between said source radio network subsystem and the said target radio network subsystem is characterized in that said method comprises:
After subscriber equipment is accomplished the switching from the source radio network subsystem to the target radio network subsystem; Said target radio network subsystem sends handoff completion message to core net, carries the identification information and the connection identifier information of said source radio network subsystem in the said handoff completion message;
Said core net is sent resource release message to said source radio network subsystem, and wherein, said resource release message is used to indicate said source radio network subsystem to discharge resource;
Before said source radio network subsystem sent resource release message, further comprise: said core net was obtained the said identification information and the said connection identifier information of carrying in the said handoff completion message in said core net; Said core net is confirmed said source radio network subsystem according to said sign, and confirms that according to said connection identifier information relevant signaling connects.
2. method according to claim 1 is characterized in that, before accomplishing switching, also comprises:
Said source radio network subsystem sends handoff request message to said target radio network subsystem, and in said handoff request message, carries said connection identifier information.
3. method according to claim 1 is characterized in that, the operation that said target radio network subsystem sends handoff completion message to core net is specially:
The target radio network controller of said target radio network subsystem sends reorientation completion message to the Serving GPRS Support Node of said core net.
4. method according to claim 3 is characterized in that, said core net is specially to the operation that said source radio network subsystem sends resource release message:
The said Serving GPRS Support Node of said core net sends the Iu release command to the source radio network controller of said source radio network subsystem.
5. method according to claim 3 is characterized in that, said connection identifier information is Iu signaling connection identifier.
6. method according to claim 1 is characterized in that, the operation that said target radio network subsystem sends handoff completion message to core net is specially:
The target enode b of said target radio network subsystem is to the Mobility Management Entity transmit path conversion request message of said core net.
7. method according to claim 6 is characterized in that, said core net is specially to the operation that said source radio network subsystem sends resource release message:
The said Mobility Management Entity of said core net sends the release command of S1 customer equipment context to the source of said source radio network subsystem enode b.
8. method according to claim 6 is characterized in that, said connection identifier information is source enode b subscriber equipment S1 AP sign.
CN2008100070812A 2008-02-02 2008-02-02 Resource releasing method Active CN101500322B (en)

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CN102413584B (en) * 2010-09-20 2015-01-28 电信科学技术研究院 Method and equipment for managing PDN (public data network) connection
CN102413562B (en) * 2010-09-20 2015-01-14 电信科学技术研究院 Management method and equipment of PDN (Packet Data Network) connection
CN102883463A (en) * 2011-07-15 2013-01-16 中兴通讯股份有限公司 Resource releasing method, device and system
CN103796262B (en) * 2012-10-31 2018-06-26 华为技术有限公司 The method and apparatus directly switched
CN110089193B (en) * 2016-12-29 2023-11-10 Oppo广东移动通信有限公司 Context release method, device and system

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CN1874593A (en) * 2005-05-30 2006-12-06 华为技术有限公司 Statistical method for switching systems

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