CN101212790A - Data packet route switching method in mobile communication system - Google Patents
Data packet route switching method in mobile communication system Download PDFInfo
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- CN101212790A CN101212790A CNA2006101696186A CN200610169618A CN101212790A CN 101212790 A CN101212790 A CN 101212790A CN A2006101696186 A CNA2006101696186 A CN A2006101696186A CN 200610169618 A CN200610169618 A CN 200610169618A CN 101212790 A CN101212790 A CN 101212790A
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Abstract
The invention discloses a data package path conversion method used in switching of mobile communication systems, which can be applied to a distributed honeycomb-like wireless communication system comprising a terminal, a source base station, a target base station and core network. The path conversion method comprises the following steps: step one, the terminal identity information and communication context corresponding to the terminal are identified according to specific resource used by the terminal after the target base station is connected into the terminal; step two, the target station sends a switching access conformation message to the terminal and sends a data-package path conversion message to the core network according to the context; step three, after the core network receives the data-package path conversion message, the data-package path is converted to the target base station; step four, the terminal sends back a switching finish message to the target base station which sends downstream data-package to the terminal. The data package path conversion method of the invention can shorten the interruption time of downstream user plane in switching process, thus improving quality of the service.
Description
Technical field
The present invention relates to the distributed cellular wireless telecommunication system, relate to particularly that terminal switches between the base station the time, the packet path conversion method between core net and the base station.
Background technology
The distributed cellular wireless telecommunication system mainly is made up of terminal, base station and core net referring to Fig. 1.As required the logic OR physical connection can be arranged between the base station, the network of being made up of the base station is called wireless access network, and (Radio Access Network RAN), is responsible for the Access Layer affairs, such as the management of Radio Resource; The Radio Resource of up-downgoing is responsible for scheduling according to the mode of shared channel by the base station.Each base station can (Cell Network CN) connects with one or more core net node.Core net is responsible for the Non-Access Stratum affairs, such as mobile management etc.Terminal be meant can with the equipment of network communication, such as mobile phone or notebook computer etc.Each terminal can only be connected to one of them base station in the network on up direction.
As shown in Figure 2, be the method schematic diagram of packet path conversion in existing switching flow and the switching flow, existing packet is changed the mechanism to be described below:
In this step, between this identification number and the private resource corresponding relation is arranged.
Step 213, target BS 30 send the packet path transforming messages for core net 40 after receiving handoff completion message, core net 40 packet path from source base station 20 converting into target base stations 30; And
In handoff procedure, because target BS has been reserved private resource, condition code such as special use, and set up the corresponding relation of setting up between the identification number of private resource and expression terminal identity, so when terminal when inserting target BS, the corresponding relation of the private resource that target BS can insert according to terminal comes unique identity of accessing terminal determined, just can find corresponding terminal identity number, like this, target BS in fact just can confirm that terminal successfully inserts.
Terminal has received switching command message when target BS send to switch inserts message, and has finished the configuration transitions that comprises in the message and the conversion work on the hardware, such as with the Frequency Synchronization of target BS, frame synchronization etc.On user's face, terminal also left and source base station between get in touch, promptly stopped transmission and reception, and can on down direction, receive packet at source base station.After setting up uplink synchronous between terminal and the target BS, terminal can also begin to send the upstream data bag.In general, in switch inserting response message, comprise uplink synchronous information, such as Timing Advance (Timing Advance, TA).
Receive TA from above-mentioned principle terminal, send the precedence relationship that process such as handoff completion message and target BS require not have between the core net translation data bag certainty.The problem that exists in the system is at present: it is just to send later at the handoff completion message of receiving terminal that target BS requires the message in core net translation data bag path.This way has postponed the conversion in core network data bag path.If this moment target BS on buffer memory packet seldom, perhaps even do not have, the transmitting time of switching packet on the later down direction so will be delayed, and has so just increased the time that packet interrupts on the down direction, will reduce those service quality to the business of delay sensitive.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of data packet route switching method in mobile communication system, is used for shortening the downlink user interrupted time of face at handoff procedure, to improve professional service quality.
To achieve these goals, the invention provides a kind of data packet route switching method in mobile communication system, be used to comprise the distributed cellular wireless telecommunication system of terminal, source base station, target BS and core net, it is characterized in that, comprising:
Step 1, described target BS inserts identity information and the communication context corresponding with described terminal that the private resource that uses according to described terminal the back is confirmed described terminal in described terminal;
Step 2, described target BS send all changing-overs to described terminal and go into acknowledge message, and send a packet path transforming message according to described communication context to described core net;
Step 3, described core net receive described packet path transforming message, and packet path is converted to described target BS from described source base station; And
Step 4, described terminal are returned a handoff completion message and are given described target BS, and described target BS sends to described terminal with downlink data packet.
Described data packet route switching method in mobile communication system, wherein, in the described step 1, described identity information comprises identification number, and between this identification number and the described private resource corresponding relation is arranged.
Described data packet route switching method in mobile communication system, wherein, described private resource is the condition code or the dedicated radio resources of Random Access Channel on the described target BS.
Described data packet route switching method in mobile communication system, wherein, in the described step 1, two, described communication context refers to the communication context of described terminal on described source base station, comprising the address information of described core net.
Described data packet route switching method in mobile communication system wherein, in the described step 1, comprises that also described terminal inserts the step of described target BS according to described private resource, is specially:
Step 51, described terminal send a measurement report to described source base station;
Step 52, described source base station judges that according to described measurement report and switching control strategy needing that described terminal is carried out the base station switches, and sends a handover request message to the selected target BS that switches; And
Step 53, described source base station sends one to described terminal and switches order after receiving a handover request acknowledge message that described target BS returns, and is transmitted to described target BS cached data packet with from the packet of described core net.
Described data packet route switching method in mobile communication system, wherein, between the described step 52,53, also comprise: described target BS is judging that allowing described terminal to carry out the base station switches the step of back for the described private resource of described terminal distribution, identification number; Wherein, between described identification number and the described private resource corresponding relation is arranged.
Described data packet route switching method in mobile communication system wherein, comprises the communication context of described terminal on described source base station, comprising the address information of described core net in the described handoff request message; Respectively comprise the descriptor of described private resource, described identification number in described switching request acknowledgement message, the described switching command.
Described data packet route switching method in mobile communication system, wherein, in the described step 2, described target BS sends the step of described switching access confirmation message to described terminal, does not in time have strict precedence according to described communication context to the step that described core net sends described packet path transforming message with described target BS.
Described data packet route switching method in mobile communication system, wherein, described distributed cellular wireless telecommunication system is a long evolving system.
Useful technique effect of the present invention:
In handoff procedure, shorten the downlink user interrupted time of face, improved professional service quality (Quality of Service, QoS).
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is a distributed cellular wireless telecommunication system structure chart;
Fig. 2 is the method schematic diagram of packet path conversion in existing switching flow and the switching flow;
Fig. 3 optimizes later switching flow and packet path conversion method schematic diagram among the present invention;
Fig. 4 is switching flow and the packet path conversion method schematic diagram that the present invention is applied to the LTE system;
Fig. 5 is the structure chart of LTE system.
Embodiment
Be described in further detail below in conjunction with the enforcement of accompanying drawing technical scheme of the present invention:
Seeing also shown in Figure 3ly, is to optimize later switching flow and packet path conversion method schematic diagram among the present invention.After terminal 10 had inserted target BS 30, in a single day target BS 30 had determined that the identity of terminal 10 just can send message to core net 40, required packet path is switched to target BS 30 from source base station 20.Concrete steps are as follows:
In this step, between identification number and the private resource corresponding relation is arranged;
In this step, the communication context is meant the communication context of terminal 10 on source base station 20, comprising the address information of core net 40.
In this step, the communication context is meant the communication context of terminal 10 on source base station 20, comprising the address information of core net 40.
In the foregoing description, step 309 and step 311 do not have strict precedence in time.
Seeing also shown in Figure 4ly, is switching flow and the packet path conversion method schematic diagram that the present invention is applied to the LTE system, carries out following description in conjunction with Fig. 5:
LTE (Long Term Evolution, the Long Term Evolution) system that present 3GPP (Third Generation Partnership Project, third generation mobile partner plan) is discussing is a typical distribution formula honeycomb mobile communcations system.Base station in this system can be handled on chain of command and be comprised RRC (RadioResource Control, Radio Resource control) at interior protocol stack, comprise RRM (Radio Resource Management, the RRM) function of measuring control and switching etc.On user's face, comprise radio link layer and following functional entity.MME (Mobility Management Entity, Mobility Management Entity) and UPE (User Plane Entity, user entity) are respectively the entities of core network control surface and user's face.
Among this embodiment, terminal A begins to carry out communication with base station S (source base station).Terminal A sends measurement report to base station S, has triggered switching flow, after switching to base station T (target BS), terminal A recover again and base station T between the packet communication.The process of switching is as follows:
In this step, between identification number and the private resource corresponding relation is arranged; Wherein, private resource can be that base station T goes up the condition code on the Random Access Channel, or special-purpose Radio Resource;
In this step, the communication context is meant the communication context of terminal A on the S of base station, comprising the address information of core net.
In this step, the communication context is meant the communication context of terminal A on the S of base station, comprising the address information of core net.
In the foregoing description, step 409 and step 411 do not have strict precedence in time.
Adopt the inventive method in handoff procedure, to shorten the interrupted time of downlink user face, improved professional service quality QoS.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (9)
1. data packet route switching method in mobile communication system is used to comprise the distributed cellular wireless telecommunication system of terminal, source base station, target BS and core net, it is characterized in that, comprising:
Step 1, described target BS inserts identity information and the communication context corresponding with described terminal that the private resource that uses according to described terminal the back is confirmed described terminal in described terminal;
Step 2, described target BS send all changing-overs to described terminal and go into acknowledge message, and send a packet path transforming message according to described communication context to described core net;
Step 3, described core net receive described packet path transforming message, and packet path is converted to described target BS from described source base station; And
Step 4, described terminal are returned a handoff completion message and are given described target BS, and described target BS sends to described terminal with downlink data packet.
2. data packet route switching method in mobile communication system according to claim 1 is characterized in that, in the described step 1, described identity information comprises identification number, and between this identification number and the described private resource corresponding relation is arranged.
3. data packet route switching method in mobile communication system according to claim 2 is characterized in that, described private resource is the condition code or the dedicated radio resources of Random Access Channel on the described target BS.
4. according to claim 1,2 or 3 described data packet route switching method in mobile communication system, it is characterized in that, in the described step 1, two, described communication context refers to the communication context of described terminal on described source base station, comprising the address information of described core net.
5. data packet route switching method in mobile communication system according to claim 1 is characterized in that, in the described step 1, comprises that also described terminal inserts the step of described target BS according to described private resource, is specially:
Step 51, described terminal send a measurement report to described source base station;
Step 52, described source base station judges that according to described measurement report and switching control strategy needing that described terminal is carried out the base station switches, and sends a handover request message to the selected target BS that switches; And
Step 53, described source base station sends one to described terminal and switches order after receiving a handover request acknowledge message that described target BS returns, and is transmitted to described target BS cached data packet with from the packet of described core net.
6. data packet route switching method in mobile communication system according to claim 5, it is characterized in that, between the described step 52,53, also comprise: described target BS is judging that allowing described terminal to carry out the base station switches the step of back for the described private resource of described terminal distribution, identification number; Wherein, between described identification number and the described private resource corresponding relation is arranged.
7. according to claim 5 or 6 described data packet route switching method in mobile communication system, it is characterized in that, comprise the communication context of described terminal on described source base station in the described handoff request message, comprising the address information of described core net; Respectively comprise the descriptor of described private resource, described identification number in described switching request acknowledgement message, the described switching command.
8. according to claim 1,2,3,5 or 6 described data packet route switching method in mobile communication system, it is characterized in that, in the described step 2, described target BS sends the step of described switching access confirmation message to described terminal, does not in time have strict precedence according to described communication context to the step that described core net sends described packet path transforming message with described target BS.
9. according to claim 1,2,3,5 or 6 described data packet route switching method in mobile communication system, it is characterized in that described distributed cellular wireless telecommunication system is a long evolving system.
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WO2010088796A1 (en) * | 2009-02-03 | 2010-08-12 | 华为技术有限公司 | Uplink data transmission method during handover procedure, system and radio network node thereof |
WO2010111966A1 (en) * | 2009-04-02 | 2010-10-07 | 中兴通讯股份有限公司 | Base station controller (bsc), mobile switching center (msc) and switch method for calling mode |
WO2011020248A1 (en) * | 2009-08-21 | 2011-02-24 | 中兴通讯股份有限公司 | Handover system and method for flat mobile communication network |
WO2012031507A1 (en) * | 2010-09-07 | 2012-03-15 | 中兴通讯股份有限公司 | Method and system for migration of data transmission channel |
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CN104080129A (en) * | 2013-03-29 | 2014-10-01 | 中国移动通信集团公司 | Data transmission method and device |
CN106031232A (en) * | 2014-03-12 | 2016-10-12 | 联发科技股份有限公司 | Method to reduce service interruption |
CN107659970A (en) * | 2016-07-25 | 2018-02-02 | 普天信息技术有限公司 | A kind of packet path conversion method for S1 switchings |
WO2018024140A1 (en) * | 2016-08-01 | 2018-02-08 | 中兴通讯股份有限公司 | Handover processing method and device |
WO2019057140A1 (en) * | 2017-09-22 | 2019-03-28 | 华为技术有限公司 | Application context processing method and device |
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WO2010088796A1 (en) * | 2009-02-03 | 2010-08-12 | 华为技术有限公司 | Uplink data transmission method during handover procedure, system and radio network node thereof |
WO2010111966A1 (en) * | 2009-04-02 | 2010-10-07 | 中兴通讯股份有限公司 | Base station controller (bsc), mobile switching center (msc) and switch method for calling mode |
WO2011020248A1 (en) * | 2009-08-21 | 2011-02-24 | 中兴通讯股份有限公司 | Handover system and method for flat mobile communication network |
WO2012031507A1 (en) * | 2010-09-07 | 2012-03-15 | 中兴通讯股份有限公司 | Method and system for migration of data transmission channel |
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CN102695234A (en) * | 2011-03-25 | 2012-09-26 | 中兴通讯股份有限公司 | Service bearing transfer method and apparatus thereof |
WO2012130046A1 (en) * | 2011-03-25 | 2012-10-04 | 中兴通讯股份有限公司 | Method and apparatus for transferring service bearer |
CN102869056A (en) * | 2012-09-14 | 2013-01-09 | 中国联合网络通信集团有限公司 | Transmission switching method and system under base station straight-through architecture |
CN102869056B (en) * | 2012-09-14 | 2016-05-18 | 中国联合网络通信集团有限公司 | Transmission changing method and system under the straight-through framework in base station |
CN102958054B (en) * | 2012-11-26 | 2016-01-06 | 中国联合网络通信集团有限公司 | network handover process method, mobile management entity, base station and network system |
CN102958054A (en) * | 2012-11-26 | 2013-03-06 | 中国联合网络通信集团有限公司 | Network switching processing method, mobile management entity, base station and network system |
CN104080129A (en) * | 2013-03-29 | 2014-10-01 | 中国移动通信集团公司 | Data transmission method and device |
CN104080129B (en) * | 2013-03-29 | 2017-06-23 | 中国移动通信集团公司 | A kind of method and apparatus of data transfer |
CN106031232A (en) * | 2014-03-12 | 2016-10-12 | 联发科技股份有限公司 | Method to reduce service interruption |
CN107659970A (en) * | 2016-07-25 | 2018-02-02 | 普天信息技术有限公司 | A kind of packet path conversion method for S1 switchings |
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