CN101742584B - Method, system and equipment for handover among base stations - Google Patents
Method, system and equipment for handover among base stations Download PDFInfo
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- CN101742584B CN101742584B CN 200810180705 CN200810180705A CN101742584B CN 101742584 B CN101742584 B CN 101742584B CN 200810180705 CN200810180705 CN 200810180705 CN 200810180705 A CN200810180705 A CN 200810180705A CN 101742584 B CN101742584 B CN 101742584B
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- H04W36/26—Reselection being triggered by specific parameters by agreed or negotiated communication parameters
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Abstract
The embodiment of the invention discloses a method, a system and equipment for handover among base stations. The method comprises the following steps that: a source eNodeB consults with a target eNodeB about component carriers used in an RRC connection between UE and the target eNodeB; and the source eNodeB transmits a handover command comprising the component carriers to the UE, so that the UE can use the component carriers to finish the RRC connection with the target eNodeB. In the embodiment of the invention, the source eNodeB and the target eNodeB perform consultation and selection on the component carriers used in the establishment of the RRC connection between the UE and the target eNodeB, so that the UE can use the component carriers with relatively lighter load to establish the RRC connection with the target eNodeB, which improves the success rate of the handover among the base stations.
Description
Technical field
The present invention relates to communication technical field, relate in particular to the method, system and the equipment that switch between a kind of base station.
Background technology
In the LTE system, should support portable terminal with the reliable switching under 350 kilometers/hour the translational speed situation, under environment so at a high speed, switching will become very frequent between the base station, so performance of handoffs is also had higher requirement.Especially, for real time business, the quality of performance of handoffs is especially crucial between the base station.
At present, mainly there is handoff technique between two kinds of base stations, i.e. direct-cut operation and soft handover.In the direct-cut operation, UE (User Equipment, subscriber equipment) needs will be connected interruption with the RRC of source eNodeB earlier before in RRC (Radio Resource Control, the Radio Resource control) connection of setting up with target eNode B (evolution base station).In the soft switching process, UE is setting up with after the RRC of target eNode B is connected, still keep being connected with the RRC of source eNodeB before being lower than preset threshold in the signal attenuation of source eNodeB, the signal attenuation of source eNodeB after being lower than preset threshold just disconnection be connected with the RRC of source eNodeB.
In realizing process of the present invention, the inventor finds to exist in the prior art following shortcoming:
In the prior art, UE and target eNode B set up RRC be connected use and form carrier wave and selected at random by source eNodeB, so UE might the very heavy composition carrier wave of working load sets up RRC with target eNode B and is connected, thereby causes handover failure rate between higher base station.
Summary of the invention
The embodiment of the invention provides method, system and the equipment that switches between a kind of base station, has improved the base station handover success rate.
The embodiment of the invention provides the method for switching between a kind of base station, may further comprise the steps:
The source evolution base station is consulted subscriber equipment with target evolution base station and is carried out the composition carrier wave that RRC is connected use with described target evolution base station;
Described source evolution base station sends the switching command that comprises described composition carrier wave to described subscriber equipment, makes described subscriber equipment use described composition carrier wave to set up and is connected with the RRC of described target evolution base station.
The embodiment of the invention provides the system of switching between a kind of base station, comprises source evolution base station, target evolution base station and subscriber equipment, wherein:
Described source evolution base station is used for consulting subscriber equipment with target evolution base station and carries out the composition carrier wave that RRC is connected use with described target evolution base station; Send the switching command that comprises described composition carrier information to subscriber equipment, make described subscriber equipment use described composition carrier wave to finish with the RRC of described target evolution base station and be connected.
The embodiment of the invention provides a kind of evolution base station equipment, comprising:
Negotiation element is used for consulting subscriber equipment with target evolution base station and carries out the composition carrier wave that RRC is connected use with described target evolution base station;
The switching command transmitting element is used for sending the switching command that comprises the composition carrier wave that described negotiation element obtains to described subscriber equipment, makes described subscriber equipment use described composition carrier wave to set up and is connected with the RRC of described target evolution base station.
In the embodiments of the invention, source evolution base station and target evolution base station are set up use that RRC is connected to subscriber equipment and target evolution base station and are formed carrier wave and carried out consulting to select, make subscriber equipment can the lighter composition carrier wave of working load set up RRC with target evolution base station and be connected, improved the base station handover success rate.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the method flow diagram that switches between a kind of base station in the embodiment of the invention;
Fig. 2 is the system construction drawing that switches between a kind of base station in the embodiment of the invention;
Fig. 3 is a kind of eNodeB equipment structure chart in the embodiment of the invention;
Fig. 4 is the method flow diagram that switches between a kind of base station in the embodiment of the invention;
Fig. 5 is the method flow diagram that switches between a kind of base station in the embodiment of the invention;
Fig. 6 is the method flow diagram that switches between a kind of base station in the embodiment of the invention;
Fig. 7 is the method flow diagram that switches between a kind of base station in the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The embodiment of the invention provides the method for switching between a kind of base station, as shown in Figure 1, may further comprise the steps:
Step 101, source eNodeB (source evolution base station) consults UE (subscriber equipment) with target eNode B (target evolution base station) and carries out the composition carrier wave that RRC is connected use with described target eNode B.
Wherein, source eNodeB and target eNode B are consulted UE and described target eNode B and are carried out the composition carrier wave that RRC is connected use and comprise:
Source eNodeB sends handover request message to target eNode B, and described handover request message is carried the information of the selected composition carrier wave of source eNodeB;
Source eNodeB receives the switching response message from target eNode B, and described switching response message is carried the new composition carrier wave that described target eNode B is recommended affirmation information or the described target eNode B of described composition carrier wave.
Step 102 sends the switching command that comprises described composition carrier wave to described UE, makes described UE use described composition carrier wave to set up and is connected with the RRC of described target eNode B.
Wherein, source eNodeB sends the switching command that comprises described composition carrier wave to described UE, makes described UE use described composition carrier wave to set up and after the RRC of described target eNode B is connected, also comprises:
Described UE sends the RRC connection setup complete message to described source eNodeB, and described RRC connection setup complete message is used to indicate described UE and is connected foundation with the RRC of described target eNode B and finishes.
Wherein, describedly send the switching command comprise described composition carrier wave to UE, make described UE use described composition carrier wave to set up and after the RRC of described target eNode B is connected, also comprise:
Source eNodeB sends described real time business data to described UE;
Described target eNode B sends described real time business data to described UE;
If described source eNodeB signal quality is higher than target eNode B, then sends the non-real-time service data by described source eNodeB to described UE, otherwise send described non-real-time service data by described target eNode B to described UE.Here the signal quality of indication can be for the signal to noise ratio snr (Signal toNoise Ratio) of eNodeB, receive among intensity indication RSSP, the loop delay RTD etc. of signal one or more; Also can be the judgement parameter according to one or more formations among intensity indication RSSP, the loop delay RTD etc. of signal to noise ratio snr (Signal to Noise Ratio), reception signal.
Wherein, describedly send the switching command comprise described composition carrier wave to UE, make described UE use described composition carrier wave to set up and after the RRC of described target eNode B is connected, also comprise:
Source eNodeB sends the non-real-time service data to described UE;
If described source eNodeB signal quality is higher than described target eNode B, then sends the real time business data by described source eNodeB to described UE, otherwise send described real time business data by described target eNode B to described UE.
Wherein, describedly send the switching command comprise described composition carrier wave to UE, make described UE use described composition carrier wave to set up and after the RRC of described target eNode B is connected, also comprise:
If source eNodeB signal quality is higher than target eNode B, then send real time business data and non-real-time service data by described source eNodeB to described UE, otherwise send described real time business data and described non-real-time service data by described target eNode B to described UE.
Wherein, described source eNodeB sends the switching command comprise described composition carrier wave to UE, makes described UE use described composition carrier wave to set up and after the RRC of described target eNode B is connected, also comprises:
Described target eNode B or source eNodeB send the multicast request message to gateway S-GW, make described S-GW send the real time business data simultaneously to described target eNode B and described source eNodeB.
Wherein, described source eNodeB sends the switching command comprise described composition carrier wave to UE, makes described UE use described composition carrier wave to set up and after the RRC of described target eNode B is connected, also comprises:
Described source eNodeB preferentially changes the real time business data before described target eNode B.
Wherein, describedly send the switching command comprise described composition carrier wave to UE, make described UE use described composition carrier wave to set up and after the RRC of described target eNode B is connected, also comprise:
When the signal quality that detects self is lower than preset threshold, send complete handover request to described target eNode B, make described target eNode B send described business datum according to described complete handover request to described UE;
Reception is confirmed response from the switching fully of described target eNode B.
In the embodiments of the invention, source eNodeB and target eNode B are set up use that RRC is connected to UE and target eNode B and are formed carrier wave and carried out consulting to select, make UE can the lighter composition carrier wave of working load set up RRC with target eNode B and be connected, improved the base station handover success rate.And, by sending business datum by eNodeB of better quality of signal in source eNodeB or the target eNode B to UE, in the reliability that has guaranteed handoff procedure, saved Radio Resource.
The embodiment of the invention provides the system of switching between a kind of base station, as shown in Figure 2, comprises source eNodeB201, target eNode B 202 and UE 203, wherein:
Source eNodeB201 is used for consulting UE 203 with target eNode B 202 and carries out the composition carrier wave that RRC is connected use with target eNode B 202; Send the switching command that comprises described composition carrier information to UE 203, make UE 203 use described composition carrier wave to finish with the RRC of described target eNode B and be connected.
In the embodiments of the invention, source eNodeB and target eNode B are set up use that RRC is connected to UE and target eNode B and are formed carrier wave and carried out consulting to select, make UE can the lighter composition carrier wave of working load set up RRC with target eNode B and be connected, improved the base station handover success rate.
The embodiment of the invention provides a kind of eNodeB equipment, as shown in Figure 3, comprising:
Switching command transmitting element 302 is used for sending the switching command that comprises the composition carrier wave that negotiation element 301 obtains to described UE, makes described UE use described composition carrier wave to set up and is connected with the RRC of described target eNode B.
Wherein, negotiation element 301 specifically is used for
Send handover request message to target eNode B, described handover request message is carried the information of the selected composition carrier wave of source eNodeB;
Reception is from the switching response message of target eNode B, and described switching response message is carried the new composition carrier wave that described target eNode B is recommended affirmation information or the described target eNode B of described composition carrier wave.
Wherein, described eNodeB equipment also also comprises:
Whether detecting unit 303 is higher than preset threshold for detection of self signal quality;
Wherein, first processing unit 304 specifically is used for
Send described real time business data to described UE;
Trigger described target eNode B and send described real time business data to described UE;
Judge whether the signal quality of self is better than the signal quality of described target eNode B, if judged result is for being, then send the non-real-time service data to described UE, if judged result then triggers described target eNode B and sends described non-real-time service data to described UE for not.
Wherein, first processing unit 304 specifically is used for
Send the non-real-time service data to described UE;
Judge whether the signal quality of self is better than the signal quality of described target eNode B, if judged result then sends the real time business data to described UE for being, if judged result then triggers described target eNode B and sends described real time business data to described UE for not.
Wherein, first processing unit 304 specifically is used for
Judge whether the signal quality of self is better than the signal quality of described target eNode B, if judged result is for being, then send real time business data and non-real-time service data to described UE, if judged result then triggers described target eNode B and sends described real time business data and described non-real-time service data to described UE for not.
Wherein, also comprise:
In the embodiments of the invention, source eNodeB and target eNode B are set up use that RRC is connected to UE and target eNode B and are formed carrier wave and carried out consulting to select, make UE can the lighter composition carrier wave of working load set up RRC with target eNode B and be connected, improved the base station handover success rate.And, by sending business datum by eNodeB of better quality of signal in source eNodeB or the target eNode B to UE, in the reliability that has guaranteed handoff procedure, saved Radio Resource.
The embodiment of the invention provides the method for switching between a kind of base station, as shown in Figure 4, may further comprise the steps:
Step 401, UE sends measurement report message to source eNodeB, and this measurement report message comprises the signal quality of each composition carrier wave of neighbours eNodeB.Wherein, the signal quality of each composition carrier wave of neighbours eNodeB can be that UE utilizes different FFT (Fast Fourier Transform, fast Fourier transform) module to measure.
Step 402, source eNodeB forms target eNode B of selections such as load information of carrier wave and selects one to form carrier wave with each based on the measurement report that UE sends.
Step 403, source eNodeB sends medium-soft handover request message to target eNode B, comprises the composition carrier information that source eNodeB selects in the medium-soft handover request message.
Step 404, target eNode B check whether selecteed composition carrier wave can be used as the medium-soft switched carrier, and described medium-soft switched carrier is target eNode B and UE and carries out RRC employed composition carrier wave when being connected.If target eNode B is confirmed the selected composition carrier wave of source eNodeB and can then be sent ACK information to service eNodeB as the medium-soft switched carrier.Otherwise target eNode B sends nack message to source eNodeB.Selectively, target eNode B can recommend a new composition carrier wave as the medium-soft switched carrier to source eNodeB.
Step 405, source eNodeB sends the medium-soft switching command to UE to UE, and this medium-soft switching command message comprises medium-soft switched carrier information.
Step 406, UE utilizes the random access procedure of the execution of medium-soft switched carrier and target eNode B, sets up RRC with target eNode B and is connected.
Step 407, UE be connected with the RRC of target eNode B set up finish after, UE sends RRC to target eNode B and source eNodeB and is connected and finishes message.
Step 408, target eNode B or source eNodeB send the multicast request message to S-GW, and request S-GW sends the real time business data simultaneously to target eNode B and source eNodeB.
Step 409, S-GW sends multicast request acknowledge message to source eNodeB or target eNode B, and sends the real time business data to source eNodeB and target eNode B simultaneously.
Step 410, source eNodeB sends the real time business data to UE.Source eNodeB can use the medium-soft switched carrier to send the real time business data, also can use the composition carrier wave of other frequency range to send the real time business data.
Step 411, target eNode B sends the real time business data to UE.Target eNode B can use the medium-soft switched carrier to send the real time business data, also can use the composition carrier wave of other frequency range to send the real time business data.
Step 412 if the signal quality of source eNodeB is better than the signal quality of described target eNode B, is then changeed step 413, if not, then changes step 414.
Step 413, source eNodeB sends the non-real-time service data to described UE.。Source eNodeB can use the medium-soft switched carrier to send the non-real-time service data, also can use the composition carrier wave of other frequency range to send the non-real-time service data.
Step 414, described target eNode B sends described non-real-time service data to described UE.Target eNode B can use the medium-soft switched carrier to send the non-real-time service data, also can use the composition carrier wave of other frequency range to send the non-real-time service data.
When step 415, the signal quality of source eNodeB were lower than a predefined threshold value, source eNodeB sent complete handover request message to target eNode B, asks all data all to be sent by target eNode B.
Step 416, target eNode B is to S-GW transmit path handover request message.
Step 417 after S-GW receives the path handover request, to target eNode B transmit path switch acknowledgment message, and stops to send user data to source eNodeB.
Step 418, target eNode B sends complete switch acknowledgment message to source eNodeB, can be sent by it to confirm all data.
Step 419, source eNodeB sends switching indication fully to UE after receiving complete switch acknowledgment message.Simultaneously, source eNodeB will not finish the non-real-time service data forwarding of transmission to target eNode B.
Step 420, receive fully switch indication after, UE just disconnects and being connected of source eNodeB, fully by the target eNode B service.
In the embodiments of the invention, source eNodeB and target eNode B are set up use that RRC is connected to UE and target eNode B and are formed carrier wave and carried out consulting to select, make UE can the lighter composition carrier wave of working load set up RRC with target eNode B and be connected, improved the base station handover success rate.And, send the real time business data for UE simultaneously by source eNodeB and target eNode B, and eNodeB of better quality of signal sends the non-real-time service data to UE in source eNodeB and the target eNode B, in the QoS that guarantees real time business, has also saved valuable Radio Resource.
The embodiment of the invention provides the method for switching between a kind of base station, as shown in Figure 5, may further comprise the steps:
Step 501, UE sends measurement report message to source eNodeB, and this measurement report message comprises the signal quality of each composition carrier wave of neighbours eNodeB.Wherein, the signal quality of each composition carrier wave of neighbours eNodeB can be that UE utilizes different FFT modules to measure.
Step 502, source eNodeB selects a target eNode B and selects a target composition carrier wave based on measurement report and each load information of forming carrier wave that UE sends.
Step 503, source eNodeB sends medium-soft handover request message to target eNode B, comprises the composition carrier wave that source eNodeB selects in the medium-soft handover request message.
Step 504, target eNode B check whether selecteed composition carrier wave can be used as the medium-soft switched carrier, and described medium-soft switched carrier is target eNode B and UE and carries out RRC employed composition carrier wave when being connected.If target eNode B is confirmed the selected composition carrier wave of source eNodeB and can then be sent ACK information to service eNodeB as the medium-soft switched carrier.Otherwise target eNode B sends nack message to source eNodeB.Selectively, target eNode B can recommend a new composition carrier wave as the medium-soft switched carrier to source eNodeB.
Step 505, source eNodeB sends the medium-soft switching command to UE to UE, and this medium-soft switching command message comprises the information of medium-soft switched carrier.
Step 506, UE utilizes the random access procedure of the execution of medium-soft switched carrier and target eNode B, sets up RRC with target eNode B and is connected.
Step 507, UE be connected with the RRC of target eNode B set up finish after, UE sends the RRC connection setup complete message to source eNodeB and target eNode B.
Step 508, source eNodeB or target eNode B send the multicast request message to S-GW, and request S-GW sends the real time business data simultaneously to target eNode B and source eNodeB.
Step 509, S-GW sends multicast request acknowledge message to source eNodeB or target eNode B, and sends real time data to source eNodeB and target eNode B simultaneously.
Step 510 if the signal quality of source eNodeB is better than the signal quality of described target eNode B, is then changeed step 511, if not, then changes step 512.
Step 511, source eNodeB sends real time business data and non-real-time service data to described UE.
Step 512, described target eNode B sends real time business data and non-real-time service data to described UE.
When step 513, the signal quality of source eNodeB were lower than a predefined threshold value, source eNodeB sent complete handover request message to target eNode B, asks all data all to be sent by target eNode B.
Step 514, target eNode B is to S-GW transmit path handover request message.
Step 515 after S-GW receives the path handover request, to target eNode B transmit path switch acknowledgment message, and stops to send user data to source eNodeB.
Step 516, target eNode B sends complete switch acknowledgment message to source eNodeB, can be sent by it to confirm all data.
Step 517, source eNodeB sends switching indication fully to UE after receiving complete switch acknowledgment message.Simultaneously, source eNodeB will not finish the non-real-time service data forwarding of transmission to target eNode B.
Step 518, receive fully switch indication after, UE just disconnects and being connected of source eNodeB, and is served by target eNode B fully.
In the embodiments of the invention, source eNodeB and target eNode B are set up use that RRC is connected to UE and target eNode B and are formed carrier wave and carried out consulting to select, make UE can the lighter composition carrier wave of working load set up RRC with target eNode B and be connected, improved the base station handover success rate.And, by sending business datum by eNodeB of better quality of signal in source eNodeB or the target eNode B to UE, in the reliability that has guaranteed handoff procedure, saved Radio Resource.
The embodiment of the invention provides the method for switching between a kind of base station, as shown in Figure 6, may further comprise the steps:
Step 601, UE sends measurement report message to source eNodeB, and this measurement report message comprises the signal quality of each composition carrier wave of neighbours eNodeB.Wherein, the signal quality of each composition carrier wave of neighbours eNodeB can be that UE utilizes different FFT modules to measure.
Step 602, measurement report and each composition carrier wave of forming load information target eNode B of selection of carrier wave and selecting a target that source eNodeB sends based on UE.
Step 603, source eNodeB sends medium-soft handover request message to target eNode B, comprises the composition carrier wave that source eNodeB selects in the medium-soft handover request message.
Step 604, target eNode B check whether selecteed composition carrier wave can be used as the medium-soft switched carrier, and described medium-soft switched carrier is target eNode B and UE and carries out RRC employed composition carrier wave when being connected.If target eNode B is confirmed the selected composition carrier wave of source eNodeB and can then be sent ACK information to service eNodeB as the medium-soft switched carrier.Otherwise target eNode B sends nack message to source eNodeB.Selectively, target eNode B can recommend a new composition carrier wave as the medium-soft switched carrier to source eNodeB.
Step 605, source eNodeB sends the medium-soft switching command to UE to UE, and this medium-soft switching command message comprises the information of medium-soft switched carrier.
Step 606, UE utilizes the random access procedure of the execution of medium-soft switched carrier and target eNode B, sets up RRC with target eNode B and is connected.
Step 607, UE be connected with the RRC of target eNode B set up finish after, UE sends the RRC connection setup complete message to source eNodeB and target eNode B.
Step 608, source eNodeB is to target eNode B forward-shifting service packet, particularly, when the link load between source eNodeB and the target eNode B is lower than must threshold value the time, source eNodeB can change real time business and non-real-time data bag simultaneously to target eNode B, if the link load between source eNodeB and the target eNode B is higher than must threshold value the time, source eNodeB can preferentially change the real time business packet before target eNode B, preferably, can be the VoIP packet.
Step 609, source eNodeB sends the real time business data to UE.
Step 610, target eNode B sends the real time business data to UE.
Step 611 if the signal quality of source eNodeB is better than the signal quality of described target eNode B, is then changeed step 612, if not, then changes step 613.
Step 612, source eNodeB sends the non-real-time service data to described UE.
Step 613, target eNode B sends described non-real-time service data to described UE.
When step 614, the signal quality of source eNodeB were lower than a predefined threshold value, source eNodeB sent complete handover request message to target eNode B, asks all data all to be sent by target eNode B.
Step 615, target eNode B sends complete switch acknowledgment message to source eNodeB, can be sent by it to confirm all data.
Step 616, source eNodeB sends switching indication fully to UE after receiving complete switch acknowledgment message.Simultaneously, source eNodeB will not be given to target eNode B before will finishing the business datum of transmission.
Step 617, receive fully switch indication after, UE just disconnects and being connected of source eNodeB, and is served by target eNode B fully.
Step 618, target eNode B is to S-GW transmit path handover request message.
Step 619 after S-GW receives the path handover request, to target eNode B transmit path switch acknowledgment message, and stops to send user data to source eNodeB.
Here need to prove that above-mentioned steps 609 and 610 does not have inevitable context.
In the embodiments of the invention, source eNodeB and target eNode B are set up use that RRC is connected to UE and target eNode B and are formed carrier wave and carried out consulting to select, make UE can the lighter composition carrier wave of working load set up RRC with target eNode B and be connected, improved the base station handover success rate.And, send the real time business data for UE simultaneously by source eNodeB and target eNode B, and eNodeB of better quality of signal sends the non-real-time service data to UE in source eNodeB and the target eNode B, in the QoS that guarantees real time business, has also saved valuable Radio Resource.
The embodiment of the invention provides the method for switching between a kind of base station, as shown in Figure 7, may further comprise the steps:
Step 701, UE sends measurement report message to source eNodeB, and this measurement report message comprises the signal quality of each composition carrier wave of neighbours eNodeB.Wherein, the signal quality of each composition carrier wave of neighbours eNodeB can be that UE utilizes different FFT modules to measure.
Step 702, measurement report and each composition carrier wave of forming load information target eNode B of selection of carrier wave and selecting a target that source eNodeB sends based on UE.
Step 703, source eNodeB sends medium-soft handover request message to target eNode B, comprises the composition carrier wave that source eNodeB selects in the medium-soft handover request message.
Step 704, target eNode B check whether selecteed composition carrier wave can be used as the medium-soft switched carrier, and described medium-soft switched carrier is target eNode B and UE and carries out RRC employed composition carrier wave when being connected.If target eNode B is confirmed the selected composition carrier wave of source eNodeB and can then be sent ACK information to service eNodeB as the medium-soft switched carrier.Otherwise target eNode B sends nack message to source eNodeB.Can select, target eNode B can recommend a new composition carrier wave as the medium-soft switched carrier to source eNodeB.
Step 705, source eNodeB sends the medium-soft switching command to UE to UE, and this medium-soft switching command message comprises the information of medium-soft switched carrier.
Step 706, UE utilizes the random access procedure of the execution of medium-soft switched carrier and target eNode B, sets up RRC with target eNode B and is connected.
Step 707, UE be connected with the RRC of target eNode B set up finish after, UE sends the RRC connection setup complete message to source eNodeB and target eNode B.
Step 708, source eNodeB preferably, can be the VoIP packet to target eNode B forward-shifting service packet.
Step 709, source eNodeB sends the non-real-time service data to UE.
Step 710 if the signal quality of source eNodeB is better than the signal quality of described target eNode B, is then changeed step 711, if not, then changes step 712.
Step 711, source eNodeB sends the real time business data to described UE.
Step 712, described target eNode B sends described real time business data to described UE.
When step 713, the signal quality of source eNodeB were lower than a predefined threshold value, source eNodeB sent complete handover request message to target eNode B, asks all data all to be sent by target eNode B.
Step 714, target eNode B sends complete switch acknowledgment message to source eNodeB, can be sent by it to confirm all data.
Step 715, source eNodeB sends switching indication fully to UE after receiving complete switch acknowledgment message.Simultaneously, source eNodeB will not finish the non-real-time service data forwarding of transmission to target eNode B.
Step 716, receive fully switch indication after, UE just disconnects and being connected of source eNodeB, and is served by target eNode B fully.
Step 717, target eNode B is to S-GW transmit path handover request message.
Step 718 after S-GW receives the path handover request, to target eNode B transmit path switch acknowledgment message, and stops to send user data to source eNodeB.
In the embodiments of the invention, source eNodeB and target eNode B are set up use that RRC is connected to UE and target eNode B and are formed carrier wave and carried out consulting to select, make UE can the lighter composition carrier wave of working load set up RRC with target eNode B and be connected, improved the base station handover success rate.And, by sending business datum by eNodeB of better quality of signal in source eNodeB or the target eNode B to UE, in the reliability that has guaranteed handoff procedure, saved Radio Resource.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform, based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise that some instructions are with so that a computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
In a word, the above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (18)
1. the method for switching between a base station is characterized in that, may further comprise the steps:
The source evolution base station is consulted subscriber equipment with target evolution base station and is carried out the composition carrier wave that radio resource control RRC is connected use with described target evolution base station;
Described source evolution base station sends the medium-soft switching command that comprises described composition carrier wave to described subscriber equipment, makes described subscriber equipment use described composition carrier wave to set up and is connected with the RRC of described target evolution base station;
Described source evolution base station and target evolution base station are consulted subscriber equipment and described target evolution base station and are carried out the composition carrier wave that RRC is connected use and comprise:
Described source evolution base station receives the measurement report message that subscriber equipment sends, described measurement report message comprises the signal quality of the composition carrier wave of neighbours base station, described evolution base station according to described measurement report select target base station with carry out RRC and be connected the composition carrier wave that uses;
Described source evolution base station sends medium-soft handover request message, the information that described medium-soft handover request message is carried the selected composition carrier wave of source evolution base station to target evolution base station;
Described source evolution base station receives the medium-soft switching response message from target evolution base station, and described medium-soft switching response message is carried the new composition carrier wave that carries out the RRC connection that described target evolution base station is recommended affirmation information or the described target evolution base station of described composition carrier wave;
Described source evolution base station sends the medium-soft switching command comprise described composition carrier wave to subscriber equipment, makes described subscriber equipment use described composition carrier wave to set up and after the RRC of described target evolution base station is connected, also comprises:
When the signal quality that detects self was lower than preset threshold, described source evolution base station sent complete handover request to described target evolution base station;
Described source evolution base station receives from the switching fully of described target evolution base station confirms response message;
After corresponding message was confirmed in the switching fully that receives described target evolution base station, evolution base station disconnection in described source was connected with described subscriber equipment.
2. the method for claim 1, it is characterized in that, described source evolution base station sends the switching command comprise described composition carrier wave to subscriber equipment, makes described subscriber equipment use described composition carrier wave to set up and after the RRC of described target evolution base station is connected, also comprises:
Described source evolution base station and described target evolution base station send the real time business data to described subscriber equipment;
If described source evolution base station signal quality is higher than target evolution base station, then sends the non-real-time service data by described source evolution base station to described subscriber equipment, otherwise send described non-real-time service data by described target evolution base station to described subscriber equipment.
3. the method for claim 1, it is characterized in that, described source evolution base station sends the switching command comprise described composition carrier wave to subscriber equipment, makes described subscriber equipment use described composition carrier wave to set up and after the RRC of described target evolution base station is connected, also comprises:
Described source evolution base station sends the non-real-time service data to described subscriber equipment;
If described source evolution base station signal quality is higher than described target evolution base station, then sends the real time business data by described source evolution base station to described subscriber equipment, otherwise send described real time business data by described target evolution base station to described subscriber equipment.
4. the method for claim 1, it is characterized in that, described source evolution base station sends the switching command comprise described composition carrier wave to subscriber equipment, makes described subscriber equipment use described composition carrier wave to set up and after the RRC of described target evolution base station is connected, also comprises:
If described source evolution base station signal quality is higher than described target evolution base station, then send real time business data and non-real-time service data by described source evolution base station to described subscriber equipment, otherwise send described real time business data and described non-real-time service data by described target evolution base station to described subscriber equipment.
5. the method for claim 1, it is characterized in that, described source evolution base station sends the switching command comprise described composition carrier wave to subscriber equipment, makes described subscriber equipment use described composition carrier wave to set up and after the RRC of described target evolution base station is connected, also comprises:
Described target evolution base station or source evolution base station send the multicast request message to gateway S-GW, make described S-GW send the real time business data to described target evolution base station and described source evolution base station.
6. the method for claim 1, it is characterized in that, described source evolution base station sends the switching command comprise described composition carrier wave to subscriber equipment, makes described subscriber equipment use described composition carrier wave to set up and after the RRC of described target evolution base station is connected, also comprises:
Described source evolution base station preferentially changes the real time business data before described target evolution base station.
7. the method for claim 1, it is characterized in that, described source evolution base station sends the switching command comprise described composition carrier wave to subscriber equipment, makes described subscriber equipment use described composition carrier wave to set up and after the RRC of described target evolution base station is connected, also comprises:
Described subscriber equipment sends the RRC connection setup complete message to described source evolution base station, and described RRC connection setup complete message is used to indicate described subscriber equipment and is connected foundation with the RRC of described target evolution base station and finishes.
8. the method for claim 1 is characterized in that, described source evolution base station also comprises after described target evolution base station sends complete handover request:
Described target evolution base station sends business datum according to described complete handover request to described subscriber equipment.
9. the system of switching between a base station is characterized in that, comprises source evolution base station, target evolution base station and subscriber equipment, wherein:
Described source evolution base station is used for consulting described subscriber equipment with described target evolution base station and carries out the composition carrier wave that RRC is connected use with described target evolution base station; Send the medium-soft switching command that comprises described composition carrier information to described subscriber equipment, make described subscriber equipment use described composition carrier wave to finish with the RRC of described target evolution base station and be connected;
Described source evolution base station receives the measurement report message that subscriber equipment sends, described measurement report message comprises the signal quality of the composition carrier wave of neighbours base station, described evolution base station according to described measurement report select target base station with carry out RRC and be connected the composition carrier wave that uses;
Described source evolution base station sends medium-soft handover request message, the information that described medium-soft handover request message is carried the selected composition carrier wave of source evolution base station to target evolution base station;
Described source evolution base station receives the medium-soft switching response message from target evolution base station, and described medium-soft switching response message is carried the new composition carrier wave that carries out the RRC connection that described target evolution base station is recommended affirmation information or the described target evolution base station of described composition carrier wave;
Described source evolution base station sends complete handover request to described target evolution base station when the signal quality that detects self is lower than preset threshold;
Described source evolution base station receives from the switching fully of described target evolution base station confirms response message;
After corresponding message was confirmed in the switching fully that receives described target evolution base station, evolution base station disconnection in described source was connected with described subscriber equipment.
10. system as claimed in claim 9 is characterized in that, described source evolution base station and described target evolution base station also are used for sending the real time business data to described subscriber equipment; If described source evolution base station signal quality is higher than target evolution base station, then send the non-real-time service data by described source evolution base station to described subscriber equipment.
11. system as claimed in claim 9 is characterized in that, described source evolution base station also is used for sending the non-real-time service data to described subscriber equipment; If described source evolution base station signal quality is higher than described target evolution base station, then send the real time business data by described source evolution base station to described subscriber equipment.
12. system as claimed in claim 9 is characterized in that, described source evolution base station also is used for sending real time business data and non-real-time service data to described subscriber equipment when described source evolution base station signal quality is higher than described target evolution base station.
13. an evolution base station equipment is characterized in that, comprises
Negotiation element is used for consulting subscriber equipment with target evolution base station and carries out the composition carrier wave that RRC is connected use with described target evolution base station;
The switching command transmitting element is used for sending the medium-soft switching command that comprises the composition carrier wave that described negotiation element obtains to described subscriber equipment, makes described subscriber equipment use described composition carrier wave to set up and is connected with the RRC of described target evolution base station;
Described negotiation element specifically is used for
Send medium-soft handover request message, the information that described medium-soft handover request message is carried the selected composition carrier wave of source evolution base station to target evolution base station;
Reception is from the medium-soft switching response message of target evolution base station, and described medium-soft switching response message is carried the new composition carrier wave that described target evolution base station is recommended affirmation information or the described target evolution base station of described composition carrier wave.
14. as evolution base station equipment as described in the claim 13, it is characterized in that, also comprise:
Whether detecting unit is higher than preset threshold for detection of self signal quality;
First processing unit is used for when signal quality that described detecting unit detects self is higher than preset threshold, to described subscriber equipment transmission business datum and/or trigger described target evolution base station and send described business datum to described subscriber equipment.
15. as evolution base station equipment as described in the claim 14, it is characterized in that described first processing unit specifically is used for
Send the real time business data to described subscriber equipment;
Trigger described target evolution base station and send described real time business data to described subscriber equipment;
Judge whether the signal quality of self is better than the signal quality of described target evolution base station, if judged result is for being, then send the non-real-time service data to described subscriber equipment, if judged result then triggers described target evolution base station and sends described non-real-time service data to described subscriber equipment for not.
16. as evolution base station equipment as described in the claim 14, it is characterized in that described first processing unit specifically is used for
Send the non-real-time service data to described subscriber equipment;
Judge whether the signal quality of self is better than the signal quality of described target evolution base station, if judged result is for being, then send the real time business data to described subscriber equipment, if judged result then triggers described target evolution base station and sends described real time business data to described subscriber equipment for not.
17. as evolution base station equipment as described in the claim 14, it is characterized in that described first processing unit specifically is used for
Judge whether the signal quality of self is better than the signal quality of described target evolution base station, if judged result is for being, then send real time business data and non-real-time service data to described subscriber equipment, if judged result then triggers described target evolution base station and sends described real time business data and described non-real-time service data to described subscriber equipment for not.
18. as evolution base station equipment as described in the claim 14, it is characterized in that, also comprise:
Second processing unit, when being lower than preset threshold for the signal quality that detects self when described detecting unit, send complete handover request to described target evolution base station, make described target evolution base station send described business datum according to described complete handover request to described subscriber equipment; Reception is confirmed response from the switching fully of described target evolution base station.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810180705 CN101742584B (en) | 2008-11-24 | 2008-11-24 | Method, system and equipment for handover among base stations |
| PCT/CN2009/073639 WO2010057393A1 (en) | 2008-11-24 | 2009-08-31 | Method for handover between base stations and evolution base station device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810180705 CN101742584B (en) | 2008-11-24 | 2008-11-24 | Method, system and equipment for handover among base stations |
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| CN101742584A CN101742584A (en) | 2010-06-16 |
| CN101742584B true CN101742584B (en) | 2013-08-28 |
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| CN 200810180705 Active CN101742584B (en) | 2008-11-24 | 2008-11-24 | Method, system and equipment for handover among base stations |
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| WO (1) | WO2010057393A1 (en) |
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| CN102457924B (en) | 2010-10-21 | 2014-12-03 | 华为技术有限公司 | Method and device for switching multiple carriers |
| CN103327621A (en) * | 2012-03-23 | 2013-09-25 | 华为技术有限公司 | Allocation method of carrier wave resources and evolved-type base stations |
| JP6637617B2 (en) | 2016-03-31 | 2020-01-29 | 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． | Communication method, network-side device, and user terminal |
| CN107889174B (en) * | 2016-09-30 | 2021-01-12 | 中国移动通信有限公司研究院 | Switching method, terminal equipment, base station and system |
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| US20020082018A1 (en) * | 2000-12-26 | 2002-06-27 | Risvan Coskun | Apparatus and method for hard handoff of data packet transmissions |
| CN1836455A (en) * | 2003-08-25 | 2006-09-20 | 摩托罗拉公司 | Handover during packet sessions in wireless communications networks and methods |
| WO2008044526A1 (en) * | 2006-10-03 | 2008-04-17 | Ntt Docomo, Inc. | Cell/carrier switching and switching back upon rrc connection |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101222751B (en) * | 2007-01-12 | 2012-09-05 | 华为技术有限公司 | Subscriber terminal, base station and independent descending carrier configuration information transmission method and system |
| CN101466127B (en) * | 2008-12-30 | 2010-06-09 | 上海无线通信研究中心 | District switching method capable of improving switching success rate |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020082018A1 (en) * | 2000-12-26 | 2002-06-27 | Risvan Coskun | Apparatus and method for hard handoff of data packet transmissions |
| CN1836455A (en) * | 2003-08-25 | 2006-09-20 | 摩托罗拉公司 | Handover during packet sessions in wireless communications networks and methods |
| WO2008044526A1 (en) * | 2006-10-03 | 2008-04-17 | Ntt Docomo, Inc. | Cell/carrier switching and switching back upon rrc connection |
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| WO2010057393A1 (en) | 2010-05-27 |
| CN101742584A (en) | 2010-06-16 |
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