CN102238625B - Method and device for switching among carriers - Google Patents
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Abstract
The invention discloses a method for switching among carriers. The method is used for the switching of a user in an enhanced cell_FACH (eFACH) state in a high speed packet access plug (HSPA+) system among the carriers, and comprises that: a base station acquires a user identifier according to received data; the base station judges whether carrier switching is required by user equipment (UE) corresponding to the user identifier or not; and the base station performs the carrier switching on the UE when the carrier switching is determined to be required. The invention also discloses a method for implementing the method.
Description
Technical field
The present invention relates to the communications field, particularly relate to method and device that intercarrier switches.
Background technology
The demand of optimization Network Based, reaches the object of equally loaded, often needs user to be switched to other carrier wave.
In prior art, supporting high speed downlink packet access (high speed downlink packet access, HSDPA) the version 5 (Release5 of characteristic, R5) 25.321 agreements, in 25.433 agreements and 25.331 agreements, stipulated, when the HSDPA user under cell private channel (Cell_DCH) state is switched, MAC protocol entity is by receiving radio network controller (Radio Network Controller at Iub mouth, RNC) wireless link synchronization in the dedicated signaling sending is reshuffled and is prepared signaling (RADIORECONFIGURATION PREPARE) and wireless link synchronization and reshuffle submission signaling (RADIORECONFIGURATION COMMIT) and carry out the switching of completing user between different carrier.
Yet, according to the version 8 of supporting HSPA+ characteristic, (Release 8, R8) regulation in 25.321 agreements, 25.433 agreements and 25.331 agreements, in high-speed packet access, strengthen (High Speed Packet AccessPlus, HSPA+) in system, cell forward access channel strengthens (Enhaced Cell_FACH, eFACH) user of state and no longer has the dedicated signaling of Iub mouth.Therefore, MAC protocol entity cannot obtain by Iub mouth the dedicated signaling that intercarrier switches that is used to indicate of RNC.
To sum up, in HSPA+ system, there is no the intercarrier handover scheme of realizing about eFACH state user.
Summary of the invention
Method and device that the embodiment of the present invention provides a kind of intercarrier to switch, the switching for the user that realizes at HSPA+ system eFACH state at intercarrier.
The method that intercarrier switches, comprises the following steps:
Base station is according to the data acquisition user ID receiving;
Base station judges whether the UE of corresponding described user ID needs to carry out carrier wave switching;
Carrier wave switching, when determining that need to carry out carrier wave switches, is carried out to described UE in base station.
A base station, comprising:
Interface module, the data acquisition user ID receiving for basis;
Judge module, for judging whether the UE of corresponding described user ID needs to carry out carrier wave switching;
Handover module, for when determining that need to carry out carrier wave switches, carries out carrier wave switching to described UE.
The embodiment of the present invention, under the triggering of the data of receiving, by the data acquisition user ID of receiving, and judges whether to carry out carrier wave switching to corresponding user.The carrier wave of having realized UE switches, and has solved Iub mouth in HSPA+ system and can not carry out the problem of carrier wave switching without dedicated signaling.
Accompanying drawing explanation
Fig. 1 is the structure chart of base station in the embodiment of the present invention;
Fig. 2 is the entity structure diagram of base station in the embodiment of the present invention;
Fig. 3 is the main method flow chart that in the embodiment of the present invention, intercarrier switches;
Fig. 4 realizes by network side data the method flow diagram that intercarrier switches in the embodiment of the present invention;
Fig. 5 realizes by user data the method flow diagram that intercarrier switches in the embodiment of the present invention;
Fig. 6 is the flow chart of the processing method that in the embodiment of the present invention, the first carrier wave switches;
Fig. 7 is the flow chart of the processing method that in the embodiment of the present invention, the second carrier wave switches.
Embodiment
The embodiment of the present invention, under the triggering of the data of receiving, by the data acquisition user ID of receiving, and judges whether to carry out carrier wave switching to corresponding user.The carrier wave of having realized UE switches, and has solved Iub mouth in HSPA+ system and can not carry out the problem of carrier wave switching without dedicated signaling.
Data in the present embodiment are data of other channel except dedicated channel, the data of the channel that especially in HSPA+ system, the user of eFACH state supports.
Referring to Fig. 1, in the present embodiment, base station comprises: interface module 101, judge module 102 and handover module 103.
The data acquisition user ID that interface module 101 receives for basis.The data acquisition user ID that interface module 101 sends according to network equipment (as RNC); Or, the data acquisition user ID that interface module 101 sends according to UE.
Judge module 102 is for judging whether the UE of corresponding described user ID needs to carry out carrier wave switching.Concrete, judge module 102 judges whether to be the contextual information that UE correspondence is carried the carrier wave of described data of setting up of corresponding described user ID, if do not set up, the carrier wave of determining the object carrier wave that need to proceed to the described data of carrying switches, if set up, carry out transfer of data, do not need carrier wave to switch.And judge module 102, after determining the contextual information of setting up corresponding described carrier wave source carrier wave in addition for described UE, determines that the carrier wave that need to proceed to object carrier wave switches.Judge module 102 is after determining the contextual information of not setting up corresponding described carrier wave source carrier wave in addition for described UE, determine that this UE does not belong to the user that this base station need to be safeguarded, this user ID is invalidated identification, needs feeding back unsuccessful information, to abandon the data of receiving.
Handover module 103, for when determining that need to carry out carrier wave switches, carries out carrier wave switching to described UE.Concrete, handover module 103 is the corresponding contextual information that carries the object carrier wave of described data for UE sets up.And handover module 103 is being set up for UE after the contextual information of object carrier wave, the data exchange on the source carrier wave of UE is arrived to object carrier wave; And/or, delete the contextual information of corresponding source carrier wave.
In the present embodiment, contextual information comprises: carrier information, can also comprise timer or counter, the Radio Network Temporary Identifier (H-RNTI) of high speed downlink packet access, the ability rating of UE etc.Carrier information is carrier identification or mac traffic identifier.
Base station also comprises: control module 104, for inquire about the contextual information of the source carrier wave beyond described carrier wave that described UE is corresponding within the scope of base station, if inquire, definite has been the contextual information that described UE sets up corresponding described carrier wave source carrier wave in addition, otherwise determines the contextual information of not setting up corresponding described carrier wave source carrier wave in addition for described UE.Control module 104 is also switched relevant various configuration informations for configuring with carrier wave, and by signaling, configuration information is sent to handover module 103.Configuration information comprises: need to be for the contextual information of object carrier wave foundation, the time that the address information of source carrier wave and carrier wave switch etc.
Below in conjunction with each functional entity in base station, the 26S Proteasome Structure and Function of inside of base station is introduced.
Interface module 101 may be positioned at Iub cause for gossip body, and the data (as Frame Protocol data) that send according to network equipment (as RNC) obtain user ID, can also obtain the carrier information of the object carrier wave of transmission bearer.Judge module 102 can be positioned at FP (Frame Protocol) entity, and FP entity judges the current contextual information that whether has object carrier wave, to judge whether the UE of corresponding described user ID needs to carry out carrier wave switching.When having the contextual information of object carrier wave, according to this contextual information, continue transmission data.When there is no the contextual information of object carrier wave, determine and need to carry out carrier wave switching.Control module 104 can be positioned at NBAP entity.Judge module 102 in FP entity is when determining that need to carry out carrier wave switches, and the control module 104 in NBAP entity sends inquiry request.Node B applying portion (Node B Application Part, NBAP) control module in entity 104 is inquired about the contextual information of the source carrier wave beyond object carrier wave that described UE is corresponding within the scope of base station, if inquire, determine the contextual information of setting up source carrier wave for described UE, the handover module 103 that control module 104 indications in NBAP entity are positioned at MAC entity can carry out carrier wave switching, otherwise determine the contextual information of not setting up source carrier wave for described UE, control module 104 in NBAP entity is returned to failure information to FP entity, with indication FP entity, abandon data.After receiving failure information, judge module 102 in FP entity abandons data.When determining that can carry out carrier wave switches, control module 104 in NBAP entity is set up signaling (UE_SETUP_PRE) by contextual information the information such as time of the positional information of the contextual information of needs foundation, source carrier wave and carrier wave switching is sent to the handover module 103 in MAC entity, especially sends to the object MAC entity of object carrier wave.The source MAC entity of the source carrier wave in MAC entity is for arriving object carrier wave by the data exchange on the source carrier wave of UE; And/or, delete the contextual information of corresponding source carrier wave.Source MAC entity, according to the order of object MAC entity or the transmission of NBAP entity, arrives object carrier wave by the data exchange on the source carrier wave of UE; And/or, delete the contextual information of corresponding source carrier wave.
Interface module 101 may be positioned at UU cause for gossip body, according to the data acquisition user ID of UE transmission, can also obtain the carrier information of the object carrier wave of transmission bearer.Judge module 102 can be positioned at MAC entity, and MAC entity judges the current contextual information that whether has object carrier wave, to judge whether the UE of corresponding described user ID needs to carry out carrier wave switching.When having the contextual information of object carrier wave, according to this contextual information, continue transmission data.When there is no the contextual information of object carrier wave, determine and need to carry out carrier wave switching.Control module 104 can be positioned at NBAP entity.Judge module 102 in MAC entity is when determining that need to carry out carrier wave switches, and the control module 104 in NBAP entity sends inquiry request.Control module 104 in NBAP entity is inquired about the contextual information of the source carrier wave beyond the object carrier wave that described UE is corresponding within the scope of base station, if inquire, determine the contextual information of setting up source carrier wave for described UE, the handover module 103 that control module 104 indications in NBAP entity are positioned at MAC entity can carry out carrier wave switching, otherwise determine the contextual information of not setting up source carrier wave for described UE, control module 104 in NBAP entity is returned to failure information to MAC entity, to indicate MAC entity to abandon data.After receiving failure information, judge module 102 in MAC entity abandons data.When determining that can carry out carrier wave switches, control module 104 in NBAP entity is set up signaling (UE_SETUP_PRE) by contextual information the information such as time of the positional information of the contextual information of needs foundation, source carrier wave and carrier wave switching is sent to the handover module 103 in MAC entity, especially sends to the object MAC entity of object carrier wave.The source MAC entity of the source carrier wave in MAC entity is for arriving object carrier wave by the data exchange on the source carrier wave of UE; And/or, delete the contextual information of corresponding source carrier wave.Source MAC entity, according to the order of object MAC entity or the transmission of NBAP entity, arrives object carrier wave by the data exchange on the source carrier wave of UE; And/or, delete the contextual information of corresponding source carrier wave.
About the annexation between each entity in base station, structure chart shown in Figure 2.
By above description, understood internal structure and the function of base station, the implementation procedure of below carrier wave being switched is introduced.
Referring to Fig. 3, the main method flow process that in the present embodiment, intercarrier switches is as follows:
Step 301: base station is according to the data acquisition user ID receiving.
Step 302: base station judges whether the UE of corresponding described user ID needs to carry out carrier wave switching.
Step 303: carrier wave switching, when determining that need to carry out carrier wave switches, is carried out to described UE in base station.
The source of the data of receiving due to base station is different, and implementation procedure is also slightly different, below by two embodiment, introduces in detail.
Referring to Fig. 4, in the present embodiment, by network side data, realize the method flow that intercarrier switches as follows:
Step 401: the Iub cause for gossip body of base station is received the FP frame data that RNC sends, and obtain the carrier information of user ID and object carrier wave.
Step 402:FP entity judges whether that this user ID is at the contextual information of object carrier wave, if having, continues step 403, otherwise continues step 404.
Step 403:FP entity is according to the contextual information transmission FP frame data of object carrier wave.
Step 404:FP entity sends user's context inquiry request message to NBAP entity.
Step 405:NBAP entity is inquired about the contextual information of the source carrier wave beyond object carrier wave within the scope of base station, if inquire, continues step 406, otherwise continues step 408.
Step 406:NBAP entity sends user context information to MAC entity and sets up signaling, to indicate, carries out carrier wave switching.User context information is set up signaling and is comprised the various configuration informations that switch for carrier wave, contextual information, the positional information of source carrier wave and the time that carrier wave switches etc. of setting up as needs.NBAP entity can also send to other entity in base station needs the contextual information set up.
Step 407:MAC entity carries out carrier wave hand-off process.
Step 408:NBAP entity returns to failure information to FP entity.
Step 409:FP entity abandons data after receiving failure information.
Referring to Fig. 5, in the present embodiment, by user data, realize the method flow that intercarrier switches as follows:
Step 501: the UU cause for gossip body of base station is received the data that UE sends, and obtain the carrier information of user ID and object carrier wave.
Step 502:MAC entity judges whether that this user ID is at the contextual information of object carrier wave, if having, continues step 503, otherwise continues step 504.
Step 503:MAC entity is according to the contextual information transmitting user data of object carrier wave.
Step 504:MAC entity sends user's context inquiry request message to NBAP entity.
Step 505:NBAP entity is inquired about the contextual information of the source carrier wave beyond object carrier wave within the scope of base station, if inquire, continues step 506, otherwise continues step 508.
Step 506:NBAP entity sends user context information to MAC entity and sets up signaling, to indicate, carries out carrier wave switching.User context information is set up signaling and is comprised the various configuration informations that switch for carrier wave, contextual information, the positional information of source carrier wave and the time that carrier wave switches etc. of setting up as needs.NBAP entity can also send to other entity in base station needs the contextual information set up.
Step 507:MAC entity carries out carrier wave hand-off process.
Step 508:NBAP entity returns to failure information to MAC entity.
Step 509:MAC entity abandons data after receiving failure information.
Wherein, the carrier switching process of step 407 and step 507 has multiple implementation, below by two exemplary embodiments, introduces in detail.
Referring to Fig. 6, the flow process of the processing method that in the present embodiment, the first carrier wave switches is as follows:
Step 601: object MAC (DestMAC) entity receives the UE_SETUP_PRE signaling that NBAP entity sends, and therefrom obtains contextual information, the positional information of source MAC (SrcMAC) entity and the time of switching that needs foundation.
Step 602:DestMAC entity sends request of data (MAC_DATA_REQ) message to SrcMAC entity, and this message has been carried the positional information of DestMAC entity.
Step 603:SrcMAC entity switches preparation after receiving MAC_DATA_REQ message.Switch to prepare to comprise and stop externally (comprising UE and network equipment) transmission data, the data that buffer memory receives etc.
Step 604:DestMAC entity receives the UE_SETUP_COMMIT signaling that NBAP entity sends, and take and indicates DestMAC entity to set up contextual information as UE.Meanwhile, DestMAC entity starts counter, so that the time of switching is started to counting.The overtime time that shows to arrive switching of counter, the time of this switching is also the time that UE_SETUP_COMMIT signaling comes into force.This step is carried out after step 601 and before step 607.
Step 605:SrcMAC entity receives the UE_DELETE signaling that NBAP entity sends, to indicate SrcMAC entity to delete the contextual information of source carrier wave.This UE_DELETE signaling also carries the time of switching.Meanwhile, SrcMAC entity starts counter, so that the time of switching is started to counting.The overtime time that shows to arrive switching of counter, the time of this switching is also the time that UE_DELETE signaling comes into force.This step is carried out after step 601 and before step 608, can synchronize and carry out with step 604.
Step 606:SrcMAC entity sends to DestMAC entity by MAC_DATA_IND message by the data on the carrier wave of source.Data on the carrier wave of source comprise the data that originally need to transmit on the carrier wave of source, comprise the data from network side and user, and comprise data that needs retransmit etc.This step is for guaranteeing the integrality of carrier wave switching certificate, if but without this step, do not affect the switching of carrier wave.In order to guarantee carrying out smoothly of step 606, estimate out the required duration of execution step 606, with this, configure the time of switching.This duration of estimating can be relevant with the size of buffer memory, and the larger duration of estimating of buffer memory is longer.
Step 607: when counter is overtime, DestMAC entity is set up the contextual information of object carrier wave, and carry out follow-up transmission.If step 606 does not complete smoothly, do not affect the execution of step 607 yet.
Step 608: when counter is overtime, SrcMAC entity is deleted the contextual information of source carrier wave.If step 606 does not complete smoothly, do not affect the execution of step 608 yet.
In prior art, according to the definition to Flush field in FP frame in 25.435 agreements, at every turn can only Flush Yi Ge priority query (Priority Queue, PQ).If carry by FP frame the indication information that carrier wave switches when carrier wave switches, when setting up a plurality of PQ for user, need to send a plurality of FP frames, once the risk existing is like this exactly to lose a FP frame, user's PQ just cannot all delete, and causes redundant data.If use existing Spare extended field in FP frame, because bit number is limited, be conventionally no more than two queues, when number of queues surpasses 2, still cannot realize and delete all queues simultaneously.The present embodiment no longer adopts the transmission of queue form control data, but the mode of employing contextual information, a corresponding contextual information of carrier wave, only needs to delete a contextual information, just be equivalent to delete a plurality of queue of the prior art, be not easy to cause redundant data.
Referring to Fig. 7, the flow process of the processing method that in the present embodiment, the second carrier wave switches is as follows:
Step 701: object MAC (DestMAC) entity receives the UE_SETUP_PRE signaling that NBAP entity sends, and therefrom obtains contextual information, the positional information of source MAC (SrcMAC) entity and the time of switching that needs foundation.
Step 702:DestMAC entity sends MAC_DATA_REQ message to SrcMAC entity, and this message has been carried the time of positional information, deletion indication information and the switching of DestMAC entity.Meanwhile, DestMAC entity starts counter.
Step 703:SrcMAC entity switches preparation after receiving MAC_DATA_REQ message.Switch to prepare to comprise and stop externally (comprising UE and network equipment) transmission data, the data that buffer memory receives etc.Meanwhile, SrcMAC entity starts counter.
Step 704:SrcMAC entity sends to DestMAC entity by MAC_DATA_IND message by the data on the carrier wave of source.Data on the carrier wave of source comprise the data that originally need to transmit on the carrier wave of source, comprise the data from network side and user, and comprise data that needs retransmit etc.This step is for guaranteeing the integrality of carrier wave switching certificate, if but without this step, do not affect the switching of carrier wave.In order to guarantee carrying out smoothly of step 704, estimate out the required duration of execution step 704, with this, configure the time of switching.This duration of estimating can be relevant with the size of buffer memory, and the larger duration of estimating of buffer memory is longer.
Step 705: when counter is overtime, DestMAC entity is set up the contextual information of object carrier wave, and carry out follow-up transmission.
Step 706: when counter is overtime, SrcMAC entity is deleted the contextual information of source carrier wave.
In the present embodiment, DestMAC entity carries switching time by MAC_DATA_REQ message to SrcMAC entity, in the flow process shown in Fig. 6, and may be shorter for the reserved time of step 704.In order to guarantee carrying out smoothly of step 704, DestMAC entity can, at the overtime rear repeating step 702 of counter, not received yet the data that SrcMAC entity sends, then perform step 705 after overtime N (as 3) is inferior.Wherein, DestMAC entity does not send the time of switching to SrcMAC entity, and SrcMAC entity is not subject to the constraint of switching time yet, after receiving MAC_DATA_REQ message, to DestMAC entity, send data, after the transmission that completes data, delete the contextual information of source carrier wave.
For realizing the software of the embodiment of the present invention, can be stored in the storage mediums such as floppy disk, hard disk, CD and flash memory.
The embodiment of the present invention, under the triggering of the data of receiving, by the data acquisition user ID of receiving, and judges whether to carry out carrier wave switching to corresponding user.The carrier wave of having realized UE switches, and has solved Iub mouth in HSPA+ system and can not carry out the problem of carrier wave switching without dedicated signaling.The embodiment of the present invention both can judge whether to carry out carrier wave switching according to network side data, can also judge whether to carry out carrier wave switching according to user's side data, no longer be limited to according to the directive command of RNC and just can switch, increase the trigger mechanism that carrier wave switches, reduced network congestion.And the embodiment of the present invention provides the specific implementation of multiple switching, improved the success rate of switching.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (9)
1. the method that intercarrier switches, is characterized in that, comprises the following steps:
Base station is according to the data acquisition user ID receiving;
Base station judges whether the UE of corresponding described user ID needs to carry out carrier wave switching;
Carrier wave switching, when determining that need to carry out carrier wave switches, is carried out to described UE in base station;
Wherein, base station judges whether the UE of corresponding described user ID needs the step of carrying out carrier wave switching to comprise:
Base station judges whether for the UE of corresponding described user ID, to set up the contextual information of the object carrier wave of the described data of corresponding carrying, if do not set up, and determine the contextual information of setting up corresponding object carrier wave source carrier wave in addition for described UE, determine that the carrier wave of the object carrier wave that need to proceed to the described data of carrying switches.
2. the method for claim 1, is characterized in that, base station comprises according to the step of the data acquisition user ID receiving:
The data acquisition user ID that base station sends according to network equipment; Or
The data acquisition user ID that base station sends according to UE.
3. the method for claim 1, is characterized in that, the step that carrier wave switching is carried out to described UE in base station comprises: base station is the contextual information that UE sets up the object carrier wave of the described data of corresponding carrying.
4. method as claimed in claim 3, is characterized in that, the step that carrier wave switching is carried out to described UE in base station comprises: for UE, setting up after the contextual information of object carrier wave, object carrier wave is arrived by the data exchange on the source carrier wave of UE in base station; And/or the contextual information of corresponding source carrier wave is deleted in base station.
5. a base station, is characterized in that, comprising:
Interface module, the data acquisition user ID receiving for basis;
Judge module, for judging whether the UE of corresponding described user ID needs to carry out carrier wave switching;
Handover module, for when determining that need to carry out carrier wave switches, carries out carrier wave switching to described UE;
Described judge module is specifically for the contextual information that judges whether to set up for the UE of corresponding described user ID the object carrier wave of the described data of corresponding carrying, if do not set up, and determine the contextual information of setting up corresponding object carrier wave source carrier wave in addition for described UE, determine that the carrier wave of the object carrier wave that need to proceed to the described data of carrying switches.
6. base station as claimed in claim 5, is characterized in that, the data acquisition user ID that interface module sends according to network equipment; Or, the data acquisition user ID sending according to UE.
7. base station as claimed in claim 5, it is characterized in that, also comprise: control module, for inquire about the contextual information of the source carrier wave beyond described carrier wave that described UE is corresponding within the scope of base station, if inquire, definite has been the contextual information that described UE sets up corresponding described carrier wave source carrier wave in addition, otherwise determines the contextual information of not setting up corresponding described carrier wave source carrier wave in addition for described UE.
8. base station as claimed in claim 5, is characterized in that, handover module is the contextual information that UE sets up the object carrier wave of the described data of corresponding carrying.
9. base station as claimed in claim 8, is characterized in that, handover module is being set up for UE after the contextual information of object carrier wave, and the data exchange on the source carrier wave of UE is arrived to object carrier wave; And/or, delete the contextual information of corresponding source carrier wave.
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| CN201010171883.4A CN102238625B (en) | 2010-05-07 | 2010-05-07 | Method and device for switching among carriers |
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| CN106922025B (en) * | 2015-12-28 | 2019-07-02 | 普天信息技术有限公司 | A kind of carrier management method and device |
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| CN1852533A (en) * | 2005-08-01 | 2006-10-25 | 华为技术有限公司 | Method for reporting fault in 3-to-2G system switching-over course |
| CN101426239A (en) * | 2007-10-31 | 2009-05-06 | 华为技术有限公司 | Service transmission method, apparatus and system in carrier switching process |
| CN101668319A (en) * | 2008-09-03 | 2010-03-10 | 中兴通讯股份有限公司 | Method and system for switching carrier waves in base station |
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| CN1852533A (en) * | 2005-08-01 | 2006-10-25 | 华为技术有限公司 | Method for reporting fault in 3-to-2G system switching-over course |
| CN101426239A (en) * | 2007-10-31 | 2009-05-06 | 华为技术有限公司 | Service transmission method, apparatus and system in carrier switching process |
| CN101668319A (en) * | 2008-09-03 | 2010-03-10 | 中兴通讯股份有限公司 | Method and system for switching carrier waves in base station |
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