CN102196489A - Method and device for detecting handover failure - Google Patents
Method and device for detecting handover failure Download PDFInfo
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- CN102196489A CN102196489A CN2010101168001A CN201010116800A CN102196489A CN 102196489 A CN102196489 A CN 102196489A CN 2010101168001 A CN2010101168001 A CN 2010101168001A CN 201010116800 A CN201010116800 A CN 201010116800A CN 102196489 A CN102196489 A CN 102196489A
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Abstract
The embodiment of the invention discloses a method for detecting a handover failure, comprising the following steps: receiving a request message from UE (user equipment) by a network-side device, wherein the request message carries newest service cell information and stable service cell information corresponding to the UE; and using the network-side device to judge whether the UE executes later handover or earlier handover in accordance with the newest service cell information and the stable service cell information. In the embodiment of the invention, the judgment process is simple, the interactive quantity of network signaling is reduced, the detection is faster and the adjustment stage of parameters can be executed earlier.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of handover failure detection method and apparatus.
Background technology
LTE (Long Term Evolution, Long Term Evolution) is 3G (3rd Generation, third generation digital communication) evolution, LTE improves and has strengthened the aerial access technology of 3G, adopt OFDM (Orthogonal Frequency Division Multiplexing, OFDM) and MIMO (Multiple Input Multiple Output, multiple-input and multiple-output) as the standard of this LTE wireless network evolution.
In the LTE network, the configuration of incorrect handoff parameter will cause the ping-pong phenomenon that switches, and the generation of ping-pong phenomenon not only can have passive influence to user's impression, also can waste Internet resources simultaneously.Therefore, MRO (Mobile Reliability optimization, mobile reliability optimization) need to consider to detect too early switching, to spend evening and switch etc. and switch anomaly by RLF (Radio link failure, radio jink failure).Wherein, relevant with switching failure procedure can be divided into: switch too early and spend evening and switch.As can be seen, unreasonable if handoff parameter is provided with, will make that switching time control is unreasonable, cause then switching too early or spend evening and switch phenomenon, and cause the RLF phenomenon.Wherein, switching time is late excessively, can RLF take place in the cell-of-origin, and switching time is too early, can RLF take place at Target cell.
As shown in Figure 1, be a kind of schematic diagram of crossing the switching in evening, UE (User Equipment, subscriber equipment) connects with base station 2 (being eNB2) after RLF takes place base station 1 (being eNB1) again, and judges that the switching in evening has taken place to cross in base station 1.Wherein, the principal character of switching evening comprises: RLF has taken place in the cell-of-origin before the handover trigger or in the handoff procedure, and UE rebulid the sub-district of connection need be in the sub-district different with former sub-district.
Concrete, the process of crossing the switching in evening may further comprise the steps:
(1) when UE after RLF takes place in base station 1, connect with base station 2 again, base station 2 is sent the RLF event report by X2 interface and is given former base station 1.Wherein, the RLF event report that send base station 2 is given in the base station 1 will comprise following information word: the sub-district PCI of RLF (Physical Layer Cell ID, physical-layer cell identifier), taking place in a) Failure Cell ID (failure cell ID).B) Reestablishment (reconstruction) Cell ID: at sub-district PCI and CGI (Global Cell ID that connection request has taken place to rebulid, Cell Global Identity), this CGI also can be called ECGI, i.e. E-UTRAN Cell Global ID, and this CGI is optional.C) C-RNTI (Cell Radio Network Temporary Identifier, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI), UE is at the current sub-district C-RNTI that RLF has taken place.(2) base station 1 is determined to have taken place once to spend evening and is switched according to the RLF event report that receives.
As shown in Figure 2, be a kind of schematic diagram of too early switching, after UE switches to base station 2 (being eNB2) by base station 1 (being eNB1), RLF takes place in a short period of time, when needing to be linked into base station 1 again again, base station 1 thinks that UE switches too early, and sends the too early information of handover trigger to base station 2.Wherein, switching too early principal character comprises: UE switches to (perhaps as yet not successful switch to) Target cell (sub-district of eNB2) from former sub-district (sub-district of eNB1) after, and RLF has taken place in a short period of time, need rebulid and be connected to former sub-district (sub-district of eNB1).
In realizing process of the present invention, the inventor finds to exist at least in the prior art following problem:
(1) deterministic process more complicated, to too early switching and the detection of spending evening and switching mainly depend on the RLF event report that Target cell sends to the cell-of-origin, make judgement by the cell-of-origin according to the information of self grasping then.And owing to the reason that produces RLF is a lot, for example, reasons such as covering leak also can cause RLF, in order to distinguish these situations, will inevitably cause increasing new signaling field.
(2) Signalling exchange complexity, detection about handoff failure at present mainly realizes by interactive information between the sub-district, information interaction repeatedly may cause losing of information, and message transmitted is the testing result of base station self, may be inaccurate, thereby cause the incorrect of testing result.
(3) accuracy is limited, owing to can have situation such as PCI erroneous judgement, thus cause the accuracy of testing result to have much room for improvement.
Summary of the invention
The invention provides a kind of handover failure detection method and apparatus, to judge situation about switching evening and situation about switching too early accurately.
In order to achieve the above object, the present invention proposes a kind of handover failure detection method, may further comprise the steps:
Network equipment receives the request message from user equipment (UE), has carried the latest services cell information and the stable service cell information of described UE correspondence in the described request message;
Described network equipment judges according to described latest services cell information and described stable service cell information whether described UE took place to switch evening or switch too early.
Preferably, described network equipment judges according to described latest services cell information and described stable service cell information whether described UE took place to switch evening or switch too early, specifically comprised:
Described network equipment rebulids the sub-district that is connected according to described latest services cell information, described stable service cell information and described UE and judges whether described UE took place to switch evening or switch too early.
Preferably, described network equipment rebulids the sub-district that is connected according to described latest services cell information, described stable service cell information and described UE and judges whether described UE took place to switch evening or switch too early, specifically comprised:
Described network equipment obtains latest services cell information and stable service cell information according to described request message;
If described latest services cell information is a Target cell, described stable service cell information is the cell-of-origin, and the described UE sub-district that rebulids connection is when being the Target cell of described UE, and described network equipment judges that described UE took place to switch evening;
If described latest services cell information is a Target cell, described stable service cell information is the cell-of-origin, and the described UE sub-district that rebulids connection is when being the cell-of-origin of described UE, and described network equipment judges that described UE takes place to switch too early.
Preferably, described message comprises radio resource control RRC connection reconstruction request message; Before the request message of described network equipment reception from user equipment (UE), also comprise:
Described UE receives switching command when the cell-of-origin switches to Target cell, if Radio Link inefficacy RLF takes place, described UE latest services cell information is set to Target cell in the switching command, described stable service cell information is set to cell-of-origin in the switching command, and obtains the sub-district that need rebulid connection;
When the sub-district that needs rebulid connection is Target cell, described UE sends described RRC connection reconstruction request message to the network equipment of described Target cell correspondence, wherein, LcellID field in the described RRC connection reconstruction request message is carried described latest services cell information, and the PcellID field in the described RRC connection reconstruction request message is carried described stable service cell information;
When the sub-district that needs rebulid connection is the cell-of-origin, described UE sends described RRC connection reconstruction request message to the network equipment of described cell-of-origin correspondence, wherein, LcellID field in the described RRC connection reconstruction request message is carried described latest services cell information, and the PcellID field in the described RRC connection reconstruction request message is carried described stable service cell information.
Preferably, described network equipment judges according to described latest services cell information and described stable service cell information whether described UE took place to switch evening or switch too early, also comprised afterwards:
Switch or the judged result of switching is too early optimized handoff parameter by evening according to crossing for described network equipment; Be specially: when described UE took place to switch too early, described network equipment was provided with the too early corresponding handoff parameter that switches; Perhaps, when described UE took place to switch evening, described network equipment was provided with and switches corresponding handoff parameter evening.
A kind of network equipment comprises:
Receiver module is used to receive the request message from user equipment (UE), has carried the latest services cell information and the stable service cell information of described UE correspondence in the described request message;
Judge module, the described latest services cell information and the described stable service cell information that are used for receiving according to described receiver module judge whether described UE took place to switch evening or switch too early.
Preferably, described judge module specifically is used for, and rebulids the sub-district that is connected according to described latest services cell information, described stable service cell information and described UE and judges whether described UE took place to switch evening or switch too early.
Preferably, described message comprises RRC connection reconstruction request message;
Described judge module specifically is used for, and obtains latest services cell information and stable service cell information according to described request message;
If described latest services cell information is a Target cell, described stable service cell information is the cell-of-origin, and the described UE sub-district that rebulids connection judges that then described UE took place to switch evening when being the Target cell of described UE;
If described latest services cell information is a Target cell, described stable service cell information is the cell-of-origin, and the described UE sub-district that rebulids connection judges that then described UE takes place to switch too early when being the cell-of-origin of described UE.
Preferably, also comprise:
Optimal module is used for optimizing handoff parameter according to the judged result of crossing the switching in evening or switching too early that described judge module is judged; Be specially: when described UE takes place to switch too early, the too early corresponding handoff parameter that switches is set; Perhaps, when described UE took place to switch evening, be provided with and switch corresponding handoff parameter evening.
A kind of user equipment (UE) comprises:
Module is set, is used to be provided with request message, carried the latest services cell information and the stable service cell information of UE correspondence in the described request message;
Sending module, be used for sending the described described request message that module is provided with that is provided with, judge according to described latest services cell information and described stable service cell information whether described UE took place to switch evening or switch too early by described network equipment to network equipment.
Preferably, described request message comprises RRC connection reconstruction request message;
The described module that is provided with specifically is used for, when receiving switching command when the cell-of-origin switches to Target cell, if Radio Link inefficacy RLF takes place, the latest services cell information is set to Target cell in the switching command, described stable service cell information is set to cell-of-origin in the switching command, and obtains the sub-district that need rebulid connection;
Described sending module specifically is used for, when the sub-district that needs rebulid connection is Target cell, network equipment to described Target cell correspondence sends described RRC connection reconstruction request message, wherein, LcellID field in the described RRC connection reconstruction request message is carried described latest services cell information, and the PcellID field in the described RRC connection reconstruction request message is carried described stable service cell information;
When the sub-district that needs rebulid connection is the cell-of-origin, network equipment to described cell-of-origin correspondence sends described RRC connection reconstruction request message, wherein, LcellID field in the described RRC connection reconstruction request message is carried described latest services cell information, and the PcellID field in the described RRC connection reconstruction request message is carried described stable service cell information.
Compared with prior art, the present invention has the following advantages at least:
By in the request that network equipment sends disappears, carry the latest services cell information and the stable service cell information of UE correspondence at UE, judge accurately that according to latest services cell information and stable service cell information UE took place to switch evening or switch too early by network equipment, deterministic process is simple, reduced the mutual quantity of signaling, and can detect faster, and can be more early adjusting stage that enters into parameter.
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 late handoff procedure schematic diagram of a kind of mistake that proposes in the prior art;
Fig. 2 is a kind of too early handoff procedure schematic diagram that proposes in the prior art;
Fig. 3 is a kind of handover failure detection method flow diagram that proposes in the embodiment of the invention;
Fig. 4 is a kind of handover failure detection method flow diagram that proposes under a kind of application scenarios of the embodiment of the invention;
Fig. 5 is a kind of network equipment structure chart that proposes in the embodiment of the invention;
Fig. 6 is a kind of user device architecture figure that proposes 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 embodiment of the invention part embodiment, rather than whole embodiment.Based on the embodiment in the embodiment of the invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of embodiment of the invention protection.
As shown in Figure 3, proposed a kind of handover failure detection method in the embodiment of the invention, may further comprise the steps:
Concrete, described network equipment judges according to described latest services cell information and described stable service cell information whether described UE took place to switch evening or switch too early, specifically comprised: described network equipment rebulids the sub-district that is connected according to described latest services cell information, described stable service cell information and described UE and judges whether described UE took place to switch evening or switch too early.
Further, described network equipment rebulids the sub-district that is connected according to described latest services cell information, described stable service cell information and described UE and judges whether described UE took place to switch evening or switch too early, and specifically comprise: described network equipment obtains latest services cell information and stable service cell information according to described request message; If described latest services cell information is a Target cell, described stable service cell information is the cell-of-origin, and the described UE sub-district that rebulids connection is when being the Target cell of described UE, and described network equipment judges that described UE took place to switch evening; If described latest services cell information is a Target cell, described stable service cell information is the cell-of-origin, and the described UE sub-district that rebulids connection is when being the cell-of-origin of described UE, and described network equipment judges that described UE takes place to switch too early.
In the embodiment of the invention, before the request message of described network equipment reception from user equipment (UE), also comprise: described UE receives switching command when the cell-of-origin switches to Target cell, if Radio Link inefficacy RLF takes place, described UE latest services cell information is set to Target cell in the switching command, described stable service cell information is set to cell-of-origin in the switching command, and obtains the sub-district that need rebulid connection; When the sub-district that needs rebulid connection is Target cell, described UE sends described RRC connection reconstruction request message to the network equipment of described Target cell correspondence, wherein, LcellID field in the described RRC connection reconstruction request message is carried described latest services cell information, and the PcellID field in the described RRC connection reconstruction request message is carried described stable service cell information; When the sub-district that needs rebulid connection is the cell-of-origin, described UE sends described RRC connection reconstruction request message to the network equipment of described cell-of-origin correspondence, wherein, LcellID field in the described RRC connection reconstruction request message is carried described latest services cell information, and the PcellID field in the described RRC connection reconstruction request message is carried described stable service cell information.
In addition, in embodiments of the present invention, described network equipment judges according to described latest services cell information and described stable service cell information whether described UE switching in evening or switching too early took place, and also comprise afterwards: described network equipment is optimized handoff parameter according to the judged result of crossing switching in evening or switching too early; Be specially: when described UE took place to switch too early, described network equipment was provided with the too early corresponding handoff parameter that switches; Perhaps, when described UE took place to switch evening, described network equipment was provided with and switches corresponding handoff parameter evening.
As seen, the method that the application of the invention embodiment is provided, by in the request that network equipment sends disappears, carry the latest services cell information and the stable service cell information of UE correspondence at UE, judge accurately that according to latest services cell information and stable service cell information UE took place to switch evening or switch too early by network equipment, deterministic process is simple, reduced the mutual quantity of signaling, and can detect faster, and can be more early adjusting stage that enters into parameter.
For technical scheme provided by the present invention more clearly is described, the handover failure detection method that the embodiment of the invention provides is elaborated below in conjunction with application scenarios shown in Figure 1.In embodiments of the present invention; network equipment includes but not limited to RNC (Radio Network Controller; radio network controller), NB (Node B; Node B), eNB, relaying Relay, base station etc.; need to prove; this network equipment is not limited to the said equipment, and all equipment that are positioned at network side are that example describes with eNB in the embodiment of the invention all within protection range of the present invention.
In the embodiment of the invention, when RLF takes place after, UE can initiate to rebulid the process of connection automatically, this process that rebulids connection is by RRC (Radio Resource Control, radio resource control) connection reconstruction request (being RRCConnectionReestablishment Request) message is finished, when promptly in crossing switching in evening or too early handoff procedure, RLF occurring, UE can send this RRC connection reconstruction request message to the Serving cell that rebulids connection, thereby finishes process of reconstruction.For example, when the Serving cell that rebulids connection was the cell-of-origin of this UE correspondence, then this UE need send RRC connection reconstruction request message to this cell-of-origin.
Further, in embodiments of the present invention, finish the detection of switching or switching too early to spending evening by using the additional information in two fields in RRC connection reconstruction request message.Wherein, these two fields are respectively LcellID field and PcellID field, and this LcellID field is used to carry the latest services cell information, and this PcellID field is used to carry stable service cell information.
It should be noted that this PcellID field is in the additional field of this RRC connection reconstruction request message in the embodiment of the invention.Promptly can in additional PcellID field, carry stable service cell information.
Certainly, in actual applications, be not limited in additional LcellID field of RRC connection reconstruction request message and PcellID field, can also be by additional LcellID field of other request message and PcellID field, for example, additional LcellID field and PcellID field are given unnecessary details in the embodiment of the invention no longer in detail in request message A.Further, also can carry this latest services cell information and stable service cell information, give unnecessary details no longer in detail in the embodiment of the invention in other fields of RRC connection reconstruction request message (perhaps other request messages).Being that example is carried out follow-up explanation in additional LcellID field of RRC connection reconstruction request message and PcellID field.
As shown in table 1, be situation in additional LcellID field of RRC connection reconstruction request message and PcellID field:
Table 1:
| LCellID | PCellID |
| The latest services sub-district.If do not receive switching command, then this field is a current service cell, if receive switching command, then this field is the Target cell of switching command. | Stablize Serving cell.Stablize the time that need set greater than certain operator service time of Serving cell, promptly when stablizing Serving cell, can think UE normal activity in stablizing Serving cell greater than this time. |
As shown in Figure 4, this handover failure detection method may further comprise the steps:
Concrete, when UE accepts service above behind the Preset Time in eNB1, can think that then latest services sub-district and the stable Serving cell of UE are sub-district A, and this moment, UE received Target cell when being the switching command of sub-district B at sub-district A, switch in the process of sub-district B at UE, the information of this latest services sub-district will change, be that the latest services sub-district will become sub-district B, but, since UE as yet not sub-district B surpass Preset Time in the service accepted, UE accepts service at sub-district A to surpass Preset Time, and then the stable Serving cell of this UE still is sub-district A.
Concrete, after RLF took place, then UE need obtain the sub-district that rebulids connection, and wherein, this sub-district that rebulids connection can be the cell-of-origin (being the sub-district A under the eNB1) of this UE correspondence or the Target cell (being the sub-district B under the eNB2) of this UE correspondence.When the sub-district that rebulids connection is the Target cell of this UE correspondence, forward step 404 to, when the sub-district that rebulids connection is the cell-of-origin of this UE correspondence, forward step 406 to.
Further, this UE can according to around environment determine to rebulid the sub-district of connection, for example, when the signal strength signal intensity between UE and the sub-district A was higher than other sub-districts, then to determine to rebulid the sub-district of connection be sub-district A under the eNB1 to UE; When the signal strength signal intensity between UE and the sub-district B was higher than other sub-districts, then to determine to rebulid the sub-district of connection be sub-district B under the eNB2 to UE.
Concrete, in this RRC connection reconstruction request message, carried LcellID field and PcellID field, carry the latest services cell information in this LcellID field, this PcellID field is carried stable service cell information; And got access to the latest services sub-district in above-mentioned steps is sub-district B, stable Serving cell is sub-district A, promptly when sending RRC connection reconstruction request message to sub-district B, the information of having carried sub-district B in the LcellID field, PcellID field have been carried the information of sub-district A.
Concrete, when eNB2 gets access to the LcellID field is sub-district B, the PcellID field is sub-district A, and UE is in being linked into the process of eNB2 or when just being linked into eNB2, RLF has taken place, then when UE was reconstructed into sub-district B under the eNB2, eNB2 knew that taken place to cross evening switches, and promptly eNB2 knows that UE had taken place to cross evening switched between sub-district A and sub-district B.
Further, when getting access to when having taken place to cross evening switching, this eNB2 also needs to optimize handoff parameter according to the judged result of crossing the switching in evening, promptly when taking place to switch evening, eNB2 need be provided with and switch corresponding handoff parameter evening, and this is provided with in the optimizing process embodiment of the invention of handoff parameter and repeats no more.
Concrete, in this RRC connection reconstruction request message, carried LcellID field and PcellID field, carry the latest services cell information in this LcellID field, this PcellID field is carried stable service cell information; And got access to the latest services sub-district in above-mentioned steps is sub-district B, stable Serving cell is sub-district A, promptly when sending RRC connection reconstruction request message to sub-district B, the information of having carried sub-district B in the LcellID field, PcellID field have been carried the information of sub-district A.
Concrete, when eNB1 gets access to the LcellID field is sub-district B, the PcellID field is sub-district A, and UE is in being linked into the process of eNB2 or when just being linked into eNB2, RLF has taken place, then when UE is reconstructed into sub-district A under the eNB1, eNB1 knows too early switching has taken place that promptly eNB1 knows that UE between sub-district A and sub-district B too early switching has taken place.
Further, when getting access to when too early switching has taken place, this eNB1 also needs to optimize handoff parameter according to the judged result of switching too early., promptly when taking place to switch too early, eNB1 need be provided with the too early corresponding handoff parameter that switches, and this is provided with in the optimizing process embodiment of the invention of handoff parameter and repeats no more.
Wherein, can the adjusting according to the actual needs smoothly of each step among the present invention.
As seen, the method that provides among the application of the invention embodiment has the following advantages:
(1) deterministic process is simple, does not need two communication processes between the sub-district just can judge and takes place to switch evening or switch too early.
(2) judge that principle is simple, do not need too early switching and the late excessively different judgement scheme of implementing respectively of switching.
(3) interface signaling is simple, and the present invention can make Target cell directly detect handoff failure, does not need by X2 interface pass-along message, can reduce the mutual of signaling; And can finish detection faster, adjusting stage that enters parameter more early then.
In addition, be to utilize the RRC connection reconstruction request message of UE to realize detecting among the present invention, promptly receiving this RRC connection reconstruction request message at Target cell can judge, and can make judgement more fast, accurately and reliably.
Based on same inventive concept, a kind of network equipment has also been proposed in the embodiment of the invention, as shown in Figure 5, comprising:
Receiver module 61 is used to receive the request message from user equipment (UE), has carried the latest services cell information and the stable service cell information of described UE correspondence in the described request message.Wherein, described request message comprises RRC connection reconstruction request message.
Judge module 62, the described latest services cell information and the described stable service cell information that are used for receiving according to described receiver module 61 judge whether described UE took place to switch evening or switch too early.
Described judge module 62 specifically is used for, and rebulids the sub-district that is connected according to described latest services cell information, described stable service cell information and described UE and judges whether described UE took place to switch evening or switch too early.
Described judge module 62 is further used for, and obtains latest services cell information and stable service cell information according to described request message; If described latest services cell information is a Target cell, described stable service cell information is the cell-of-origin, and the described UE sub-district that rebulids connection judges that then described UE took place to switch evening when being the Target cell of described UE; If described latest services cell information is a Target cell, described stable service cell information is the cell-of-origin, and the described UE sub-district that rebulids connection judges that then described UE takes place to switch too early when being the cell-of-origin of described UE.
Optimal module 63 is used for optimizing handoff parameter according to the judged result of crossing the switching in evening or switching too early that described judge module 62 is judged.Be specially: when described UE takes place to switch too early, the too early corresponding handoff parameter that switches is set; Perhaps, when described UE took place to switch evening, be provided with and switch corresponding handoff parameter evening.
Wherein, each module of apparatus of the present invention can be integrated in one, and also can separate deployment.Above-mentioned module can be merged into a module, also can further split into a plurality of submodules.
As seen, the equipment that provides among the application of the invention embodiment, by in the request that network equipment sends disappears, carry the latest services cell information and the stable service cell information of UE correspondence at UE, judge accurately that according to latest services cell information and stable service cell information UE took place to switch evening or switch too early by network equipment, deterministic process is simple, reduced the mutual quantity of signaling, and can detect faster, and can be more early adjusting stage that enters into parameter.
Based on same inventive concept, a kind of subscriber equipment has also been proposed in the embodiment of the invention, as shown in Figure 6, comprising:
Module 71 is set, is used to be provided with request message, carried the latest services cell information and the stable service cell information of UE correspondence in the described request message.
Sending module 72, be used for sending the described described request message that module 71 is provided with that is provided with, judge according to described latest services cell information and described stable service cell information whether described UE took place to switch evening or switch too early by described network equipment to network equipment.
Concrete, described request message comprises RRC connection reconstruction request message;
The described module 71 that is provided with specifically is used for, when receiving switching command when the cell-of-origin switches to Target cell, if Radio Link inefficacy RLF takes place, the latest services cell information is set to Target cell in the switching command, described stable service cell information is set to cell-of-origin in the switching command, and obtains the sub-district that need rebulid connection;
Described sending module 72 specifically is used for, when the sub-district that needs rebulid connection is Target cell, network equipment to described Target cell correspondence sends described RRC connection reconstruction request message, wherein, LcellID field in the described RRC connection reconstruction request message is carried described latest services cell information, and the PcellID field in the described RRC connection reconstruction request message is carried described stable service cell information;
When the sub-district that needs rebulid connection is the cell-of-origin, network equipment to described cell-of-origin correspondence sends described RRC connection reconstruction request message, wherein, LcellID field in the described RRC connection reconstruction request message is carried described latest services cell information, and the PcellID field in the described RRC connection reconstruction request message is carried described stable service cell information.
Wherein, each module of apparatus of the present invention can be integrated in one, and also can separate deployment.Above-mentioned module can be merged into a module, also can further split into a plurality of submodules.
As seen, the equipment that provides among the application of the invention embodiment, by in the request that network equipment sends disappears, carry the latest services cell information and the stable service cell information of UE correspondence at UE, judge accurately that according to latest services cell information and stable service cell information UE took place to switch evening or switch too early by network equipment, deterministic process is simple, reduced the mutual quantity of signaling, and can detect faster, and can be more early adjusting stage that enters into parameter.
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 some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above sequence number is not represented the quality of embodiment just to description.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (11)
1. a handover failure detection method is characterized in that, may further comprise the steps:
Network equipment receives the request message from user equipment (UE), has carried the latest services cell information and the stable service cell information of described UE correspondence in the described request message;
Described network equipment judges according to described latest services cell information and described stable service cell information whether described UE took place to switch evening or switch too early.
2. the method for claim 1 is characterized in that, described network equipment judges according to described latest services cell information and described stable service cell information whether described UE took place to switch evening or switch too early, specifically comprised:
Described network equipment rebulids the sub-district that is connected according to described latest services cell information, described stable service cell information and described UE and judges whether described UE took place to switch evening or switch too early.
3. method as claimed in claim 2, it is characterized in that, described network equipment rebulids the sub-district that is connected according to described latest services cell information, described stable service cell information and described UE and judges whether described UE took place to switch evening or switch too early, specifically comprised:
Described network equipment obtains latest services cell information and stable service cell information according to described request message;
If described latest services cell information is a Target cell, described stable service cell information is the cell-of-origin, and the described UE sub-district that rebulids connection is when being the Target cell of described UE, and described network equipment judges that described UE took place to switch evening;
If described latest services cell information is a Target cell, described stable service cell information is the cell-of-origin, and the described UE sub-district that rebulids connection is when being the cell-of-origin of described UE, and described network equipment judges that described UE takes place to switch too early.
4. the method for claim 1 is characterized in that, described message comprises radio resource control RRC connection reconstruction request message; Before the request message of described network equipment reception from user equipment (UE), also comprise:
Described UE receives switching command when the cell-of-origin switches to Target cell, if Radio Link inefficacy RLF takes place, described UE latest services cell information is set to Target cell in the switching command, described stable service cell information is set to cell-of-origin in the switching command, and obtains the sub-district that need rebulid connection;
When the sub-district that needs rebulid connection is Target cell, described UE sends described RRC connection reconstruction request message to the network equipment of described Target cell correspondence, wherein, LcellID field in the described RRC connection reconstruction request message is carried described latest services cell information, and the PcellID field in the described RRC connection reconstruction request message is carried described stable service cell information;
When the sub-district that needs rebulid connection is the cell-of-origin, described UE sends described RRC connection reconstruction request message to the network equipment of described cell-of-origin correspondence, wherein, LcellID field in the described RRC connection reconstruction request message is carried described latest services cell information, and the PcellID field in the described RRC connection reconstruction request message is carried described stable service cell information.
5. the method for claim 1 is characterized in that, described network equipment judges according to described latest services cell information and described stable service cell information whether described UE took place to switch evening or switch too early, also comprised afterwards:
Switch or the judged result of switching is too early optimized handoff parameter by evening according to crossing for described network equipment; Be specially: when described UE took place to switch too early, described network equipment was provided with the too early corresponding handoff parameter that switches; Perhaps, when described UE took place to switch evening, described network equipment was provided with and switches corresponding handoff parameter evening.
6. a network equipment is characterized in that, comprising:
Receiver module is used to receive the request message from user equipment (UE), has carried the latest services cell information and the stable service cell information of described UE correspondence in the described request message;
Judge module, the described latest services cell information and the described stable service cell information that are used for receiving according to described receiver module judge whether described UE took place to switch evening or switch too early.
7. network equipment as claimed in claim 6 is characterized in that,
Described judge module specifically is used for, and rebulids the sub-district that is connected according to described latest services cell information, described stable service cell information and described UE and judges whether described UE took place to switch evening or switch too early.
8. network equipment as claimed in claim 7 is characterized in that, described message comprises RRC connection reconstruction request message;
Described judge module specifically is used for, and obtains latest services cell information and stable service cell information according to described request message;
If described latest services cell information is a Target cell, described stable service cell information is the cell-of-origin, and the described UE sub-district that rebulids connection judges that then described UE took place to switch evening when being the Target cell of described UE;
If described latest services cell information is a Target cell, described stable service cell information is the cell-of-origin, and the described UE sub-district that rebulids connection judges that then described UE takes place to switch too early when being the cell-of-origin of described UE.
9. network equipment as claimed in claim 6 is characterized in that, also comprises:
Optimal module is used for optimizing handoff parameter according to the judged result of crossing the switching in evening or switching too early that described judge module is judged; Be specially: when described UE takes place to switch too early, the too early corresponding handoff parameter that switches is set; Perhaps, when described UE took place to switch evening, be provided with and switch corresponding handoff parameter evening.
10. a user equipment (UE) is characterized in that, comprising:
Module is set, is used to be provided with request message, carried the latest services cell information and the stable service cell information of UE correspondence in the described request message;
Sending module, be used for sending the described described request message that module is provided with that is provided with, judge according to described latest services cell information and described stable service cell information whether described UE took place to switch evening or switch too early by described network equipment to network equipment.
11. network equipment as claimed in claim 10 is characterized in that, described request message comprises RRC connection reconstruction request message;
The described module that is provided with specifically is used for, when receiving switching command when the cell-of-origin switches to Target cell, if Radio Link inefficacy RLF takes place, the latest services cell information is set to Target cell in the switching command, described stable service cell information is set to cell-of-origin in the switching command, and obtains the sub-district that need rebulid connection;
Described sending module specifically is used for, when the sub-district that needs rebulid connection is Target cell, network equipment to described Target cell correspondence sends described RRC connection reconstruction request message, wherein, LcellID field in the described RRC connection reconstruction request message is carried described latest services cell information, and the PcellID field in the described RRC connection reconstruction request message is carried described stable service cell information;
When the sub-district that needs rebulid connection is the cell-of-origin, network equipment to described cell-of-origin correspondence sends described RRC connection reconstruction request message, wherein, LcellID field in the described RRC connection reconstruction request message is carried described latest services cell information, and the PcellID field in the described RRC connection reconstruction request message is carried described stable service cell information.
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| CN102196489B (en) | 2014-03-19 |
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