CN100512543C - Method for setting wireless access load - Google Patents
Method for setting wireless access load Download PDFInfo
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- CN100512543C CN100512543C CNB2004100043821A CN200410004382A CN100512543C CN 100512543 C CN100512543 C CN 100512543C CN B2004100043821 A CNB2004100043821 A CN B2004100043821A CN 200410004382 A CN200410004382 A CN 200410004382A CN 100512543 C CN100512543 C CN 100512543C
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Abstract
This invention discloses a method founding wireless switch-in bearing. This method includes: after SRNC receiving the request of establishing wireless switch-in bearing of CN, start up the user surface transmission bearing founding process of In interface; SRNC sends the request of establishing RB to the user terminal; and SRNC sends the information of equipping wireless chain resource to its subordinate base station; as the user terminal receiving the request of establishing RB, finish the founding of RB; as the base station receiving the re-collocation of wireless chain, re-distribute the wireless chain-channel resources, SRNC and the base station synchronize the transmitting channels and inform the launching signal of the base station; after the re-collocation of wireless chain-channel and receiving the information of complementation of RB, SRNC informs CN wireless switch-in bearing establishment. This invention adopts the establishment processes of Iub interface bearing and Uu interface bearing in RAB founding process, it greatly reduces the founding time of RAB, therefore, it improves the information continuing and delaying index.
Description
Technical field
The present invention relates to the technology of setting up of RAB, be meant a kind of method of in Wideband Code Division Multiple Access (WCDMA) (WCDMA)/TD SDMA (TD-SCDMA) system, setting up RAB especially.
Background technology
In the WCDMA/TD-SCDMA system, the user sets up a service needed and carries out several signaling procedures, comprises the process of Access Network and non-access net, initiates professional set up the temporal summation that the business of asking sets up successfully to be spent and be referred to as the signaling time delay from the user.The signaling time delay is an important indicator of 3G network, and Virtual network operator and equipment manufacturers very pay close attention to it, therefore, the optimization of signaling time delay index is had crucial meaning.
Introduce a parameter relevant below: activationary time with time delay.
Here said activationary time be meant by network regulation, UE and network enable moment of identical, new parameter configuration simultaneously.Referring to shown in Figure 1, set up in the process in business, exist radio bearer setting (RADIO BEARER SETUP) message and radio bearer setting to finish (RADIO BEARER SETUP COMPLETE) message between UE and the universal terrestrial access network (UTRAN).When user terminal (UE) receive RADIO BEARER SETUP message in the RRC message that contains activationary time numerical value Toffset that UTRAN issues after, carry out the configuration and the professional foundation of relevant parameter.After finishing dealing with, the activationary time that UE issues at UTRAN is to UTRAN response RADIOBEARER SETUP COMPLETE message.
From above-mentioned example as can be seen, wireless link synchronization reshuffle finish after, and must reach activationary time the time, UE could be sent completely message to UTRAN, therefore the activationary time here is to the obvious effect of the time delay that continues.The numerical value of activationary time is big more, and connecting time is long more.But this numerical value again can not be too little, if too little, will cause UE to have little time to finish configuration, thereby cause the failure that continues.
The following describes and in the signaling handshaking procedure, account for long RAB of time (RAB) and set up process.
RAB is meant the carrying of user plane, is used for transmitting voice, data and multimedia service between UE and the core net (CN).The signaling process of RAB comprises the processing procedure of terrestrial interface (Iu interface and Iub interface) and air interface (Uu interface).
UE could set up RAB after at first will finishing Radio Resource control (RRC) connection foundation then.The foundation of RAB is to be initiated by CN, the function that UTRAN carries out, and basic procedure is:
CN sends the RAB assignment request message to UTRAN, and request UTRAN sets up RAB; After UTRAN received this RAB assignment request message, service wireless network controller wherein (SRNC) initiated to set up the bearer context for data transmission of Iu interface and Iub interface (Iur interface); SRNC initiates radio bearer (RB) to UE and sets up request; UE finishes RB and sets up, and responds RB foundation to SRNC and finishes message; SRNC replys RAB assignment response message to CN, finishes RAB and sets up flow process.After RAB sets up successfully, a basic call setup, UE enters communication process.
According to the Radio Resource operating position, i.e. Radio Resource state when Radio Resource state when RRC connection is set up and RAB set up can be divided into following three kinds of situations with the flow process of setting up of RAB:
1) DCH-DCH:RRC uses DCH, and RAB prepares to use DCH;
2) RACH/FACH-RACH/FACH:RRC uses control channel (CCH), and RAB prepares to use CCH;
3) RACH/FACH-DCH:RRC uses CCH, and RAB prepares to use DCH.
In above-mentioned three kinds of situations, first kind is the most frequently used.Here this situation of main explanation.Referring to shown in Figure 2, it is as follows that the RAB under the DCH-DCH synchronous situation sets up flow process:
Step 201:CN sends the RAB assignment message (Radio Access Bearer Assignment Request) that wireless access network is used (RANAP) agreement to UTRAN, initiates RAB and sets up request;
After step 202:SRNC receives RAB foundation request, with the Quality of Service parameter maps of RAB is AAL2 link characteristic parameters and Radio Resource characterisitic parameter, and user's face transmission bearer that the Access Link Control Application Protocol of Iu interface (ALCAP) is initiated the Iu interface according to ATM Adaptation Layer type 2 (AAL2) link characteristic parameters is wherein set up process;
Step 203:SRNC prepares (Radio Link Reconfiguration Prepare) message to the radio link reconfiguration that subordinate's base station (Node B) sends base station applies agreement (NBAP), and request subordinate's Node B prepares to increase by the DCH of one or more carrying RAB on existing Radio Link;
Step 204:Node B redistributes air-link resources according to the message of receiving, sends (Radio Link Reconfiguration Ready) message to affiliated SRNC then, and notice SRNC radio link reconfiguration is ready to complete;
User's face transmission bearer of the ALCAP of Iub interface initiation Iub interface is set up process among the step 205:SRNC, and Node B and SRNC set up synchronously by the up-downgoing synchronization frame of exchange dedicated transmission channel (DCH) Frame Protocol;
Step 206:SRNC sends radio link reconfiguration to subordinate's Node B and carries out message (RadioLink Reconfiguration Commit);
Step 207:SRNC sets up (Radio Bearer Setup) message to the RB that UE sends the RRC agreement;
After step 208:UE carries out RB foundation, send radio bearer foundation to SRNC and finish (RadioBearer Setup Complete) message;
Step 209:SRNC receives after radio bearer sets up the message finish, and responds RAB assignment response (Radio Access Bearer Assignment Response) message to CN, finishes RAB and sets up flow process.
In said process, step 203～206 are used to set up the carrying of Iub interface, and step 207～208 are used to set up the carrying of Uu mouth.These two kinds of operations are serials, and promptly 203～208 priorities are finished the foundation of the carrying of Iub interface, Uu interface.If the time period that the Iub interface carrying is set up is A, the Uu interface time period is B, and then 303～308 needed times of completing steps are A+B.Obviously, in time period A, the Uu mouth is not do any operation.And in time period B, the carrying of Iub has been set up and has been finished, and is just waiting for.Therefore, this serial operation mechanism is very big to the influence of the time delay that continues.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of method of setting up RAB, make it can reduce the time delay that continues of RAB.
In order to achieve the above object, the invention provides a kind of method of setting up RAB, this method comprises:
A. after service wireless network controller receives the request of setting up RAB of core net initiation, initiate user's face transmission bearer of Iu interface and set up process;
B. service wireless network controller sends the message that reconfigures Radio Link to subordinate's base station when the request message of radio bearer is set up in the user terminal transmission; Perhaps, service wireless network controller is after the request message of radio bearer is set up in the user terminal transmission, and before described radio bearer foundation was finished, service wireless network controller sent to subordinate's base station and reconfigures Radio Link message; Perhaps, service wireless network controller to subordinate's base station send reconfigure Radio Link message after, and described base station finish redistribute air-link resources before, service wireless network controller sends the request message of setting up radio bearer to user terminal;
C. after user terminal is received the request message of setting up radio bearer, finish the foundation of radio bearer; And, after the message that reconfigures Radio Link is received in the base station, redistribute air-link resources, after resource allocation was finished, the synchronous and informing base station of finishing transmission channel between service wireless network controller and the base station transmitted on the Radio Link of reshuffling;
D. service wireless network controller notice core net RAB is set up.
In execution in step C, also further comprise:
Whether C1, service wireless network controller judge whether user terminal is finished between the foundation of radio bearer and base station and the service wireless network controller and finish synchronously, if, execution in step D, otherwise, execution in step C1.
After user terminal is set up radio bearer, further comprise among the step C:
User terminal sends radio bearer to service wireless network controller and sets up the information of finishing,
Then whether to finish the foundation of radio bearer be service wireless network controller to user terminal described in the step C1 sets up the information of finishing and judge by whether receiving this radio bearer.
Service wireless network controller sends to subordinate's base station that to reconfigure Radio Link message be to prepare message by the radio link reconfiguration of base station applies agreement NBAP agreement to realize among the step B;
Then step C redistributes resource in the base station, and and service wireless network controller between finish synchronous process and comprise:
Air-link resources is redistributed after receiving that radio link reconfiguration is prepared message in C21, base station, and notification service radio network controller radio link reconfiguration is ready to complete;
User's face transmission bearer of the Access Link Control Application Protocol ALCAP of Iub interface initiation Iub interface is set up process in C22, the service wireless network controller, and base station and service wireless network controller are set up synchronously by the up-downgoing synchronization frame of exchange dedicated transmission channel DCH Frame Protocol;
C23, service wireless network controller send radio link reconfiguration to subordinate's base station and carry out message.
Service wireless network controller reconfigures Radio Link message to the transmission of subordinate's base station when user terminal transmission radio bearer is set up message in step B.
In step B service wireless network controller to user terminal send set up the request message of radio bearer after, and RAB set up finish before, service wireless network controller sends to subordinate's base station and reconfigures Radio Link message.
In step B service wireless network controller to subordinate's base station send reconfigure Radio Link message after, and before service wireless network controller and base station were finished synchronously, service wireless network controller was set up message to user terminal transmission radio bearer.
Setting up process at user's face transmission bearer of initiating the Iu interface described in the steps A comprises:
A1, service wireless network controller are mapped as ATM Adaptation Layer type 2 AAL2 link characteristic parameters and Radio Resource characterisitic parameter with the mass parameter of RAB;
The ALCAP of the Iu interface of A2, service wireless network controller sets up process according to user's face transmission bearer that AAL2 link characteristic parameters is wherein initiated the Iu interface.
The present invention sets up in the process at RAB, the parallel process of setting up of Iub interface carrying and the process of setting up of Uu interface bearing of carrying out, and this method can greatly reduce RAB settling time, thereby has improved the signaling time delay index that continues.
Description of drawings
Fig. 1 sets up the process flow schematic diagram for RB;
The schematic flow sheet that Fig. 2 sets up for prior art RAB;
Fig. 3 is the schematic flow sheet of method of the present invention;
Fig. 4 is for realizing the specific embodiments of the invention schematic flow sheet.
Embodiment
The present invention sets up in the process at RAB, the parallel process of setting up of Iub interface carrying and the process of setting up of Uu interface bearing of carrying out.
Referring to shown in Figure 3, realize that method of the present invention may further comprise the steps:
After step 301:SRNC receives the request of setting up RAB of CN initiation, the qos parameter of RAB wherein is mapped as AAL2 link characteristic parameters and Radio Resource characterisitic parameter, and the ALCAP of the Iu interface of SRNC sets up process according to user's face transmission bearer that AAL2 link characteristic parameters is wherein initiated the Iu interface;
Step 302:SRNC sends RB to user terminal and sets up message, and SRNC sends radio link reconfiguration message to subordinate's base station;
Step 303: user terminal is finished the foundation of RB after receiving and setting up the RB request message; And, after radio link reconfiguration message is received in the base station, redistribute air-link resources, and SRNC and base station finish synchronously and after informing base station transmits of transmission channel on the Radio Link of reshuffling, SRNC notice CN RAB is set up.
Certainly, in execution in step 302, whether whether service wireless network controller can the real-time judge user terminal be finished between the foundation of radio bearer and base station and the service wireless network controller is finished synchronously, after definite both finishes, and execution in step 303.
Wherein, can comprise three kinds of situations in the step 302.First kind of situation is: when user terminal transmission RB set up message, SRNC notified subordinate's base station to reconfigure channel at SRNC.Second kind of situation is: send after RB sets up message to user terminal at SRNC, but before RB did not set up, SRNC notified subordinate's base station to reconfigure channel.The third situation is: notify after subordinate's base station begins to prepare to reconfigure channel at SRNC, but before not finishing channel configuration, SRNC sends RB to user terminal and sets up message.
Describe technical scheme of the present invention in detail below in conjunction with the drawings and specific embodiments.
Referring to shown in Figure 4, the detailed process of present embodiment is as follows:
Step 401:CN initiates RAB and sets up request to RAB assignment (the Radio AccessBearer Assignment Request) message that UTRAN sends RANAP;
After step 402:SRNC receives RAB foundation request, the qos parameter of RAB is mapped as AAL2 link characteristic parameters and Radio Resource characterisitic parameter, and the ALCAP of Iu interface sets up process according to user's face transmission bearer that AAL2 link characteristic parameters is wherein initiated the Iu interface;
Step 403:SRNC sets up (Radio Bearer Setup) message to the RB that UE sends the RRC agreement, and UE begins RB and sets up process;
Step 404:SRNC prepares (Radio Link Reconfiguration Prepare) message to the radio link reconfiguration that subordinate's Node B sends the NBAP agreement, and request subordinate's Node B prepares to increase by the DCH of one or more carrying RAB on existing Radio Link;
Step 405:Node B distributes air-link resources, sends (RadioLink Reconfiguration Ready) message to affiliated SRNC then, and notice SRNC radio link reconfiguration is ready to complete;
User's face transmission bearer of the ALCAP of Iub interface initiation Iub interface is set up process among the step 406:SRNC, and Node B and SRNC set up synchronously by the up-downgoing synchronization frame of exchange DCH Frame Protocol;
Step 407:SRNC sends radio link reconfiguration to subordinate's Node B and carries out (Radio LinkReconfiguration Commit) message;
After step 408:UE finishes RB foundation, send radio bearer foundation to SRNC and finish (RadioBearer Setup Complete) message;
Step 409:SRNC receives after radio bearer sets up the message finish, and responds RAB assignment response (Radio Access Bearer Assignment Response) message to CN, finishes RAB and sets up flow process.
Characteristics of the present invention are that the carrying of Iub interface and the carrying of Uu interface set up simultaneously.Usually B settling time of Uu interface is greater than A settling time of Iub interface.And, in the above-described embodiments can radio bearer set up that activationary time is set to B in the request message, therefore, SRNC is in UE sends the time period B that RB sets up request, and UE sends RB to SRNC and finishes message, and Iub interface was also set up and was finished this moment.
Certainly, if the Uu interface settling time B less than A settling time of Iub interface, two kinds of processing methods can be arranged.
First kind: the activationary time when the Uu interface bearing is set up is not provided with reference to B, and is provided with reference to A.Can guarantee that so still Radio Bearer Setup Complete message sends in step 408.In such cases, setting up Uu interface and Iub interface time is about time period A.
Second kind: only the Radio Bearer Setup Complete message in the step 408 in the above-mentioned flow process was sent before step 407.At this moment, setting up Uu interface and Iub interface time still is A.
In addition, also have a kind of processing method to be: no matter at first begin to set up wherein any of Uu interface or Iub interface, do not set up finish before, just begin to set up another kind of interface.In such cases, setting up Uu interface and Iub interface time will be less than A+B.
In sum, under the parallel processing situation, MAX{A, B}≤time delay＜A+B, rather than the A+B under the prior art condition.So the present invention greatly reduces RAB settling time, thereby optimized the time delay that continues.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (5)
1, a kind of method of setting up RAB, it is characterized in that: this method may further comprise the steps:
A. after service wireless network controller receives the request of setting up RAB of core net initiation, initiate user's face transmission bearer of Iu interface and set up process;
B. service wireless network controller sends the message that reconfigures Radio Link to subordinate's base station when the request message of radio bearer is set up in the user terminal transmission; Perhaps, service wireless network controller is after the request message of radio bearer is set up in the user terminal transmission, and before described radio bearer foundation was finished, service wireless network controller sent to subordinate's base station and reconfigures Radio Link message; Perhaps, service wireless network controller to subordinate's base station send reconfigure Radio Link message after, and described base station finish redistribute air-link resources before, service wireless network controller sends the request message of setting up radio bearer to user terminal;
C. after user terminal is received the request message of setting up radio bearer, finish the foundation of radio bearer; And, after the message that reconfigures Radio Link is received in the base station, redistribute air-link resources, after resource allocation was finished, the synchronous and informing base station of finishing transmission channel between service wireless network controller and the base station transmitted on the Radio Link of reshuffling;
D. service wireless network controller notice core net RAB is set up.
2, method according to claim 1 is characterized in that, in execution in step C, also further comprises:
Whether C1, service wireless network controller judge whether user terminal is finished between the foundation of radio bearer and base station and the service wireless network controller and finish synchronously, if, execution in step D, otherwise, execution in step C1.
3, method according to claim 2 is characterized in that, after user terminal is set up radio bearer in step C, further comprises:
User terminal sends radio bearer to service wireless network controller and sets up the information of finishing,
Then whether to finish the foundation of radio bearer be service wireless network controller to user terminal described in the step C1 sets up the information of finishing and judge by whether receiving this radio bearer.
4, method according to claim 1 and 2, it is characterized in that service wireless network controller sends to subordinate's base station that to reconfigure Radio Link message be to prepare message by the radio link reconfiguration of base station applies agreement NBAP agreement to realize among the step B;
Then step C redistributes resource in the base station, and and service wireless network controller between finish synchronous process and comprise:
Air-link resources is redistributed after receiving that radio link reconfiguration is prepared message in C21, base station, and notification service radio network controller radio link reconfiguration is ready to complete;
User's face transmission bearer of the Access Link Control Application Protocol ALCAP of Iub interface initiation Iub interface is set up process in C22, the service wireless network controller, and base station and service wireless network controller are set up synchronously by the up-downgoing synchronization frame of exchange dedicated transmission channel DCH Frame Protocol;
C23, service wireless network controller send radio link reconfiguration to subordinate's base station and carry out message.
5, method according to claim 1 is characterized in that, sets up process at user's face transmission bearer of initiating the Iu interface described in the steps A and comprises:
A1, service wireless network controller are mapped as ATM Adaptation Layer type 2 AAL2 link characteristic parameters and Radio Resource characterisitic parameter with the mass parameter of RAB;
The ALCAP of the Iu interface of A2, service wireless network controller sets up process according to user's face transmission bearer that AAL2 link characteristic parameters is wherein initiated the Iu interface.
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| CNB2004100043821A CN100512543C (en) | 2004-02-17 | 2004-02-17 | Method for setting wireless access load |
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| CNB2004100043821A CN100512543C (en) | 2004-02-17 | 2004-02-17 | Method for setting wireless access load |
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| CN1658542A CN1658542A (en) | 2005-08-24 |
| CN100512543C true CN100512543C (en) | 2009-07-08 |
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| CN100569021C (en) * | 2005-10-28 | 2009-12-09 | 华为技术有限公司 | Link converting method in a kind of communication system |
| CN100426923C (en) * | 2005-11-01 | 2008-10-15 | 华为技术有限公司 | Method for storage configuration identification reallocation in mobile communication system |
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| WO2007062544A1 (en) * | 2005-11-29 | 2007-06-07 | Zte Corporation | Method of realizing the asynchronous radio link reconfiguration process of base station synchronously |
| CN1992966B (en) * | 2005-12-27 | 2010-07-14 | 中兴通讯股份有限公司 | Private wireless link reconfigured method with renewable activation time |
| CN100401796C (en) * | 2006-01-19 | 2008-07-09 | 华为技术有限公司 | Method for assigning resource of base station node |
| CN100428858C (en) * | 2006-02-07 | 2008-10-22 | 华为技术有限公司 | Method and apparatus for shortening soft switch-over time delay |
| CN101115276B (en) * | 2006-07-24 | 2010-04-21 | 展讯通信（上海）有限公司 | Wireless bearing configuration method |
| CN101132620B (en) * | 2006-08-23 | 2010-09-08 | 大唐移动通信设备有限公司 | Signal channel regulation method |
| CN101267248B (en) * | 2007-03-15 | 2012-09-05 | 中兴通讯股份有限公司 | Synchronization method and device spanning across wireless network controller in broadcast service data |
| CN101193446B (en) * | 2007-05-11 | 2010-08-04 | 华为技术有限公司 | A signaling wireless network controller and UI management method |
| CN101128050B (en) * | 2007-08-31 | 2010-04-14 | 华为技术有限公司 | Wireless carrier control method, system and service wireless network controller |
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