CN101998466B - Method and system for judging unexpected switched scene - Google Patents
Method and system for judging unexpected switched scene Download PDFInfo
- Publication number
- CN101998466B CN101998466B CN200910163154.1A CN200910163154A CN101998466B CN 101998466 B CN101998466 B CN 101998466B CN 200910163154 A CN200910163154 A CN 200910163154A CN 101998466 B CN101998466 B CN 101998466B
- Authority
- CN
- China
- Prior art keywords
- community
- base station
- link failure
- radio link
- cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a method for judging an unexpected switched scene, which comprises that: when a radio link fails, a terminal performs radio resource control (RRC) reestablishment and transmits a radio resource control reestablishment request message to a first base station, wherein the message carries a radio resource control reestablishment reason value serving as the radio link failure; the first base station receives the radio resource control reestablishment request message and notifies a second base station of the radio link failure information only when the radio resource control reestablishment reason value is the radio link failure, wherein the second base station is a base station corresponding to a cell in which the radio link of the terminal fails; and the second base station judges the unexpected switched scene according to the radio link failure information and the switching information of the terminal. The invention also provides a system for judging an unexpected switched scene. In the method and the system, the base station judges the unexpected switched scene according to the RRC reestablishment reason, the waste of network resources can be reduced, and the network performance is improved.
Description
Technical field
The present invention relates to radio honeycomb communication system, more particularly, relate to LTE (in (Long TermEvolution, Long Term Evolution) mobile communication system, a kind of decision method of less desirable handoff scenario and system.
Background technology
LTE network is by E-UTRAN (Evolved UTRAN, the universal land radio access web of evolution) base station eNB (Evolved NodeB, evolution base station) and EPC (Evolved Packet Core, evolution packet switching center) form, network flattening.The set that wherein EUTRAN comprises the eNB being connected by S1 interface with EPC, can connect by X2 interface between eNB.S1, X2 are logic interfacing.An EPC can manage one or more eNB, and an eNB also can be controlled by a plurality of EPC, and an eNB can manage one or more communities.
MANET (Self-Organized Netowrk, SON) is a kind of technology of automatically carrying out network configuration and optimization.The feature of this technology is self-configuring self-optimizing, this technology in LTE, apply make LTE base station eNB can be according to certain measurement automatic configuration network parameter, and carry out Automatic Optimal according to network change, thus keep network performance optimum, save a large amount of manpower and materials simultaneously.
For the self-optimization of switching parameter of LTE system, measurement that need to be relevant with switching according to the operation conditions of network, optimizes cell reselection and switches relevant parameter according to certain algorithm, to improve the performance of network.The switching here refers to the switching of LTE internal system and the switching between system, switching between system refers to UTRAN (Universal Terrestrial Radio Access Network, universal land radio access web) or GSM (Global System For Mobile Communication, global system for mobile communications) or the switching of CDMA (Code Division Multiple Access, code division multiple access access) system.The process that terminal is switched in network is: network side is according to the signal quality of terminal to report Zhe community and adjacent area, and the handoff algorithms based on certain is made handover decisions, then according to handover decisions notification terminal, carries out the execution of concrete switching flow.Inappropriate handoff parameter setting can cause pingpang handoff, handoff failure and Radio Link Failure (Radio Link Failure, RLF), and these are all less desirable switchings, and user's experience is caused negative effect and can waste Internet resources.Therefore, for self-optimization of switching parameter, to the accurate judgement of handoff failure or less desirable handoff scenario, be, the basis of carrying out handoff parameter adjustment.
Subscriber equipment (User Equipment, UE), after there is Radio Link Failure, can carry out re-establishing of RRC (Radio Resource Control, Radio Resource is controlled).At source base station or target BS, can retain user's information, for RRC, rebuild.UE re-establishes in request message RRC (Radio Resource Control's), can be with the Radio Network Temporary Identifier (C-RNTI of terminal iidentification (UE-Identity), UE community, Cell Radio Network Temporary Identifier), short MAC integrity verification value (short MAC-I, short Medium Access Control integrityprotection), the cause value that cell physical address (PCI, Physical Cell Identity) and UE carry out RRC reconstruction.Wherein, C-RNTI distributes (scene of handoff failure) in cell-of-origin, or is triggering (other scene) of distributing in the community of RRC reconstruction.PCI refers to the physical address (scene of handoff failure) of cell-of-origin, or at the physical address (other scene) that triggers the community of RRC reconstruction.UE, carrying out RRC while re-establishing, carries out the selection of Shi community, and community selection course is mainly the quality according to wireless signal, so there is according to RLF the community that community and RRC re-establish, can carry out the judgement of less desirable handoff scenario.The less desirable handoff scenario here refers to switched scene late, that switching is too early, wrong cell is selected in switching, according to the statistical information of concrete less desirable handoff scenario, and the optimization of the handoff parameter of can being correlated with.
A kind of switching excessively scene in evening can be that as shown in Figure 1, UE in Cell b, RLF has occurred under eNB B, then in the Cell a under eNB A, attempts carrying out RRC reconstruction, illustrates from GaiUECong community Cell b excessively late to the switching of community Cell a.
A kind ofly judge that switching too early scene can be, as shown in Figure 2, be switched to eNB B Xia community Cell b from the Cell a of eNB A Xia community after, just in Cell b, there is Radio Link Failure soon in UE, then UE has selected community Cell a to carry out RRC reconstruction, namely gets back to again to switch in Qian community and carries out RRC reconstruction.So, just illustrate that UECong community Cell a is too early to the switching of community Cell b.
A kind of switching selects the scene of wrong cell to be, as shown in Figure 3, UE is switched to eNB B, after Cell b, RLF has just occurred soon from eNB C Xia community Cell c, and then UE carries out RRC reconstruction at eNBA Xia community Cell a.Under the eNB B that explanation is selected, Cell b is wrong Target cell, and correct Target cell is community Cell a, and namely UE should directly carry out the switching from community Cellc to community Cell a.
For above-mentioned three kinds of typical less desirable handoff scenario, a kind of decision method is, eNB A receives that the RRC of UE re-establishes after request message, by the information of RLF, notify eNB B, wherein the information of RLF comprises: the physical address PCI of the community that RLF occurs, RRC rebuilds the PCI of community or the Cell Global Identity of evolution (ECGI, Evolved Cell Global Identifier) of attempting, and UE, at RLF, the C-RNTI in community occurs.Wherein, there is the physical address PCI of community and UE at RLF, C-RNTI information in community to occur be that the RRC of the UE that receives from eNB A re-establishes request message in RLF.ENB B receives the information of RLF, according to the contextual information of UE wherein, i.e. PCI and C-RNTI information, if this UE just switches and comes from Cell a, eNB B judges that this UECong community Cell a is too early to the switching of community Cell b, and notifies eNB A; If this UE just switches and comes from Cell c, the Cell c of eNB B judgement UE selects mistake to the Target cell of the switching of community Cell b, and correct Target cell is community Cell a, and notifies eNB C.Otherwise UECong community Cell b is excessively late to the switching of community Cell a in eNB B judgement.
In LTE system, UE carries out the trigger condition that RRC re-establishes and is: the safe mode of Access Layer activates, and has a following condition to meet: Radio Link Failure (RLF, radio link failure); Handoff failure (handoverFailure); Handoff failure from E-UTRA to different system (mobility fromE-UTRA failure); Integrity checking failure (integrity check failure); RRC connects reconfiguration failure (RRC connection reconfiguration failure).The problem that above-mentioned decision method exists is, owing to re-establishing the cause value that the RRC in request message re-establishes at RRC, only have: reconfiguration failure (reconfigurationFailure), handoff failure (handoverFailure), other (otherFailure).Therefore, receive that the RRC of UE rebuilds after request message as eNB A, the cause value that cannot re-establish according to RRC judges that whether the current RRC of UE re-establishes is due to RLF having occurred, and so just cannot carry out the judgement of handoff scenario.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of decision method and system of less desirable handoff scenario is provided, and makes evolution base station can correctly carry out the judgement of handoff scenario.
In order to address the above problem, the invention provides a kind of decision method of less desirable handoff scenario, comprising:
Terminal wireless link failure re-establishes owing to carrying out Radio Resource control, send Radio Resource and control and re-establish request message to the first base station, at described Radio Resource, control and carry Radio Resource in re-establishing request message and control that to re-establish cause value be Radio Link Failure;
The first base station receives described Radio Resource control and re-establishes request message, only at Radio Resource, control when re-establishing cause value and being Radio Link Failure, just by radio link failure information, notify the second base station, base station corresponding to community that the Radio Link Failure that described the second base station is terminal occurs;
Described the second base station judges less desirable handoff scenario according to the handover information of described radio link failure information and terminal.
Further, said method also can have following characteristics, described method also comprises, when described terminal re-establishes request message due to the control of following condition initiation Radio Resource, according to concrete RRC, re-establish reason and control and carry concrete Radio Resource in re-establishing request message and control and re-establish cause value at described Radio Resource, described condition is: the handoff failure from E-UTRA to different system or integrity checking failure.
Further, said method also can have following characteristics, described radio link failure information comprises that RRC rebuilds the cell identity information of the second community and the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI of the second community that terminal occurs at Radio Link Failure of the cell identity information of first community of attempting, Radio Link Failure generation, the first community belongs to the second base station, the second community belongs to the second base station, while not preserving the contextual information of described terminal in the second base station, it is excessively late that the switching of described terminal from the second community to the first community adjudicated in the second base station.
Further, said method also can have following characteristics, described radio link failure information comprises that RRC rebuilds the cell identity information of first community of attempting, the cell identity information of the second community that Radio Link Failure occurs, with the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI of terminal in the second community of Radio Link Failure generation, the first community belongs to the second base station, the second community belongs to the second base station, in the second base station, remain with the contextual information of described terminal, and terminal is while being switched to the second community from the first community, it is too early to the switching of the second community from the first community that described terminal is adjudicated in the second base station, the second base station notifies the first base station terminal to switch too early from the first community to the second community.
Further, said method also can have following characteristics, described radio link failure information comprises that RRC rebuilds the cell identity information of first community of attempting, the cell identity information of the second community that Radio Link Failure occurs, with the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI of terminal in the second community of Radio Link Failure generation, the first community belongs to the first base station, the second community belongs to the second base station, when terminal is that Cong tri-communities are switched to the second community, and in the second base station, remain with the contextual information of described terminal, described the second base station is adjudicated described terminal Cong tri-communities and has been selected wrong cell to the switching of the second community, described in the 3rd base station under the second notice San community, base station, wrong cell has been selected to the switching of the second community in terminal Cong tri-communities.
The present invention also provides a kind of decision system of less desirable handoff scenario, comprises terminal, the first base station and the second base station, wherein:
Described terminal, for when Radio Link Failure, carry out Radio Resource and control and to re-establish, send Radio Resource and control and re-establish request message to the first base station, at described Radio Resource, control and carry Radio Resource in re-establishing request message and control that to re-establish cause value be Radio Link Failure;
The first base station, be used for receiving described Radio Resource and control the request that re-establishes, only at Radio Resource, control when re-establishing cause value and being Radio Link Failure, just by radio link failure information, notify the second base station, base station corresponding to community that the Radio Link Failure that described the second base station is terminal occurs;
The second base station, for judging less desirable handoff scenario according to the handover information of described radio link failure information and terminal.
Further, said system also can have following characteristics, described terminal, also for initiate Radio Resource due to following condition, control while re-establishing request message, according to concrete RRC, re-establish reason and control and carry concrete Radio Resource in re-establishing request message and control and re-establish cause value at described Radio Resource, described condition is: the handoff failure from E-UTRA to different system or integrity checking failure.
Further, said system also can have following characteristics, the described radio link failure information that described the first base station sends comprises that RRC rebuilds the cell identity information of the second community and the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI of the second community that terminal occurs at Radio Link Failure of the cell identity information of first community of attempting, Radio Link Failure generation, the first community belongs to the second base station, and the second community belongs to the second base station;
The second base station, for knowing that according to radio link failure information the second community that Radio Link Failure occurs belongs to this base station, RRC rebuilds first community of attempting and belongs to the first base station, and the contextual information of described terminal is not preserved in the second base station, adjudicate the switching of described terminal from the second community to the first community excessively late.
Further, said system also can have following characteristics, the described radio link failure information that described the first base station sends comprises that RRC rebuilds the cell identity information of the second community and the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI of the second community that terminal occurs at Radio Link Failure of the cell identity information of first community of attempting, Radio Link Failure generation, the first community belongs to the second base station, and the second community belongs to the second base station;
The second base station, for knowing that according to radio link failure information the second community that Radio Link Failure occurs belongs to this base station, RRC rebuilds first community of attempting and belongs to the first base station, in the second base station, remain with the contextual information of described terminal, and terminal is while being switched to the second community from the first community, adjudicate described terminal too early to the switching of the second community from the first community, notify the first base station terminal to switch too early from the first community to the second community.
Further, said system also can have following characteristics, the radio link failure information that described the first base station sends comprises that RRC rebuilds the cell identity information of the second community and the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI of the second community that terminal occurs at Radio Link Failure of the cell identity information of first community of attempting, Radio Link Failure generation, the first community belongs to the first base station, and the second community belongs to the second base station;
Described the second base station, for knowing that according to radio link failure information the second community that Radio Link Failure occurs belongs to this base station, RRC rebuilds first community of attempting and belongs to the first base station, and terminal is that Cong tri-communities are switched to the second community, in the second base station, remain with the contextual information of described terminal, adjudicate described terminal Cong tri-communities and selected wrong cell to the switching of the second community, wrong cell has been selected to the switching of the second community in terminal Cong tri-communities described in the 3rd base station under San community.
The present invention is not in expecting the judgement of handoff scenario, the reason that base station re-establishes according to RRC, to adjudicating of less desirable handoff scenario, can concrete handoff parameter be optimized on this basis, reduce the waste of Internet resources, improve the performance of network, thereby realize the self-optimization function of network.
Accompanying drawing explanation
Fig. 1 is that UE switched late schematic diagram from Cell b to Cell a;
Fig. 2 is that UE switches too early schematic diagram from Cell a to Cell b;
Fig. 3 is that UE switches selection wrong cell schematic diagram from Cell c to Cell b;
Fig. 4 is the decision method flow chart of the less desirable handoff scenario of the present invention;
Fig. 5 passs RLF information by X2/S1 oral instructions in LTE system;
Fig. 6 is passed and is switched too early indication information by X2/S1 oral instructions in LTE system;
Fig. 7 passs to switch by X2/S1 oral instructions in LTE system to select wrong cell indication information.
Embodiment
In order to make eNB can obtain UE according to the content of message when the RRC that receives UE re-establishes request message, carry out the concrete reason value that RRC re-establishes, to carry out the judgement of handoff scenario, need at the RRC of UE, re-establish in request message, increase cause value: Radio Link Failure (RLF, radiolink failure), integrity checking failure (integrity check failure), the handoff failure from E-UTRA to different system (mobility from E-UTRA failure).
The present invention proposes a kind of decision method of less desirable handoff scenario, core concept is UE because RLF carries out carrying when RRC re-establishes RRC, to re-establish cause value be RLF, receive the base station of the message that RRC re-establishes, when being RLF, the cause value re-establishing at RRC just notifies the base station of the community of RLF generation, carry out the judgement of handoff scenario, network, based on not expecting that the judgement of handoff scenario carries out the optimization of handoff parameter, improves network performance.
The decision method of less desirable handoff scenario provided by the invention as shown in Figure 4, comprising:
Step S10, UE, because wired link is unsuccessfully carried out RRC and re-established, sends RRC and re-establishes request message to the first base station, and in described RRC re-establishes request message, filling in RRC, to re-establish cause value be Radio Link Failure;
Also can re-establish in the cause value of request message at RRC, increase following cause value: integrity checking failure (integrity check failure), the handoff failure from E-UTRA to different system (mobility fromE-UTRA failure).
Terminal is when the control of initiation Radio Resource re-establishes request message, according to the reason of specifically carrying out RRC reconstruction, at RRC, re-establish and in request message, fill in cause value, such as terminal is because the handoff failure from E-UTRA to different system or integrity checking are unsuccessfully initiated RRC while re-establishing request message, in this message, to re-establish cause value be handoff failure or the integrity checking failure that E-UTRA arrives different system to the corresponding RRC of filling in.
Step S20, the first base station is when the RRC that receives UE re-establishes request message, when the cause value only re-establishing at RRC is Radio Link Failure, the second base station is just notified by radio link failure information in the first base station, the base station under the community that the Radio Link Failure that the second base station is terminal occurs;
Step S30, concrete less desirable handoff scenario is judged according to the radio link failure information receiving and the handover information of counterpart terminal in the second base station, specifically comprises:
Radio link failure information comprises that RRC rebuilds the cell identity information of the second community and the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI of the second community that terminal occurs at Radio Link Failure of the cell identity information of first community of attempting, Radio Link Failure generation, the first community belongs to the second base station, and the second community belongs to the second base station;
(1), while not preserving the contextual information of described terminal in the second base station, it is excessively late that the switching of described terminal from the second community to the first community adjudicated in the second base station;
(2) in the second base station, remain with the contextual information of described terminal, and terminal is while being switched to the second community from the first community, it is too early to the switching of the second community from the first community that described terminal is adjudicated in the second base station, and the second base station notifies the first base station terminal to switch too early from the first community to the second community;
(3) when terminal is that Cong tri-communities are switched to the second community, and in the second base station, remain with the contextual information of described terminal, the second base station is adjudicated described terminal Cong tri-communities and has been selected wrong cell to the switching of the second community, and wrong cell has been selected to the switching of the second community in terminal Cong tri-communities described in the 3rd base station under the second base station notice San community.
Embodiment mono-: the switching of UE is the judgement of the scene in evening excessively.
In conjunction with UE shown in Fig. 1, from Cell b, to Cell a, switched late schematic diagram, specific embodiment one is described below:
Step 101, UE resides in Cell b, because wireless quality variation causes having occurred Radio Link Failure RLF, UE selects Liao community Cell a to carry out RRC reconstruction according to community selection course, UE sends RRC to eNB A and re-establishes request message, in this message, having carried the cause value that RRC re-establishes is Radio Link Failure (RLF, radio link failure).
Step 102, eNB A receives that the RRC of UE re-establishes request message, the cause value re-establishing according to RRC wherein, when cause value is Radio Link Failure (RLF, radio link failure) time, eNBA is sent to eNB B according to RLF generation cell information wherein by RLF information, RLF information can contain the physical address PCI information of the community Cell b of RLF generation, RRC rebuilds the PCI of community Cella or the Cell Global Identity (ECGI of evolution attempting, Evolved Cell Global Identifier) there is the C-RNTI information in the Cell b of community at RLF in information and UE.As shown in Figure 5, in LTE system, by X2/S1 oral instructions, pass RLF information.
Step 103, eNB B receives the RLF information of eNB A, can know that UE, in the Cell of this base station b, RLF has occurred, and then in the Cell a in eNB A, carries out RRC and rebuilds trial.If do not preserve the contextual information of this UE in eNB B, it is excessively late that eNB B adjudicates the switching of this UE from Cell b to Cella.
Step 104, eNB A and eNB B, according to the judgement of the handoff scenario between respective cell, carry out the optimization of handoff parameter, improve the performance of switching.
Embodiment bis-: UE switches the judgement of too early scene.
In conjunction with UE shown in Fig. 2, from Cell a, to Cell b, switch too early schematic diagram, specific embodiment two is described below:
Step 201, UE is from eNB A Xia community Cell a successful switch to eNB B Xia community Cellb, and eNB B can retain context a period of time of this UE.
Step 202, after being switched to Cell b, there is soon Radio Link Failure in UE, UE selects Liao community Cell a to carry out RRC reconstruction according to community selection course, namely get back to again to switch and in Qian community, carry out RRC and re-establish, UE sends RRC to eNB A and re-establishes request message, in this message, having carried the cause value that RRC re-establishes is Radio Link Failure (RLF, Radio Link Failure).
Step 203, eNB A receives that the RRC of UE re-establishes request message, and the cause value re-establishing according to RRC wherein, when cause value is Radio Link Failure (RLF, Radio Link Failure), time, according to RLF generation cell information wherein, RLF information is sent to eNB B.RLF information can contain the physical address PCI information of the community Cell b of RLF generation, RRC rebuilds the PCI of community Cell a or the Cell Global Identity of evolution (ECGI, Evolved Cell Global Identifier) information and the C-RNTI information of UE in RLF generation community Cell b of attempting.In LTE system, by X2/S1 oral instructions, pass RLF information as shown in Figure 5.
Step 204, eNB B receives the RLF information of eNB A, can know that UE, in the Cell of this base station b, RLF has occurred, and then in the Cell a in eNB A, carries out RRC and rebuilds trial.If the contextual information of this UE that eNB B exist to retain, it is too early to the switching of Cell b from Cell a that eNB B adjudicates this UE.
Step 205, there is a Cell a to the too early switching behavior of the switching of Cell b in eNB B notice eNB A.As shown in Figure 6, in LTE system, by X2/S1 oral instructions, pass and switch too early indication information.
Step 206, eNB A and eNB B, according to the judgement of the handoff scenario between respective cell, carry out the optimization of handoff parameter, improve the performance of switching.
Embodiment tri-: when switching, selected the judgement of wrong cell scene.
In conjunction with UE shown in Fig. 3, from Cell c to Cell b, switch and select wrong cell schematic diagram, specific embodiment three is described below:
Step 301, UE Cell c from eNB C is switched in the Cell b of eNB B Xia community, and eNBB can retain context a period of time of this UE.
Step 302, UE is switched to Radio Link Failure has occurred in Cell b soon, UE selects Liao community Cell a to carry out RRC reconstruction according to community selection course, UE sends RRC to eNB A and re-establishes request message, in this message, having carried the cause value that RRC re-establishes is Radio Link Failure (RLF, radio link failure).
Step 303, eNB A receives that the RRC of UE re-establishes request message, the cause value re-establishing according to RRC wherein, when cause value is Radio Link Failure (RLF, radio link failure) time, according to RLF generation cell information wherein, RLF information is sent to eNB B, RLF information can contain the physical address PCI information of the community Cell b of RLF generation, RRC rebuilds the PCI of community Cell a or the Cell Global Identity (ECGI of evolution attempting, Evolved Cell Global Identifier) there is the C-RNTI information in the Cell b of community at RLF in information and UE.In LTE system, by X2/S1 oral instructions, pass RLF information as shown in Figure 5.
Step 304, eNB B receives the RLF information of eNB A, can know that UE, in the Cell of this base station b, RLF has occurred, and then in the Cell a in eNB A, carries out RRC and rebuilds trial.If eNB B exists the contextual information of this UE retaining, eNB B adjudicates this UE and to the switching of Cell b, has selected wrong cell from Cell c.
Step 305, there is a Cell c and to the switching of Cell b, has selected the switching behavior of wrong cell in eNB B notice eNB C.As shown in Figure 7, in LTE system, by X2/S1 oral instructions, pass and switch selection wrong cell indication information.
Step 306, eNB C and eNB B, according to the judgement of the handoff scenario between respective cell, carry out the optimization of handoff parameter, improve the performance of switching.
The method of the invention, UE is carrying out RRC while re-establishing, UE carries the cause value that concrete RRC re-establishes, the reason that base station re-establishes according to RRC, to adjudicating of less desirable handoff scenario, can concrete handoff parameter be optimized on this basis, reduce the waste of Internet resources, improve the performance of network, thereby realize the self-optimization function of network.
Claims (10)
1. a decision method for less desirable handoff scenario, is characterized in that,
At the Radio Resource of terminal, control and re-establish in request message, increase cause value: Radio Link Failure, integrity checking failure, the handoff failure from E-UTRA to different system;
Terminal re-establishes because Radio Link Failure carries out Radio Resource control, send Radio Resource and control and re-establish request message to the first base station, at described Radio Resource, control and carry Radio Resource in re-establishing request message and control that to re-establish cause value be Radio Link Failure;
The first base station receives described Radio Resource control and re-establishes request message, only at Radio Resource, control when re-establishing cause value and being Radio Link Failure, just by radio link failure information, notify the second base station, base station corresponding to community that the Radio Link Failure that described the second base station is terminal occurs;
Described the second base station judges less desirable handoff scenario according to the handover information of described radio link failure information and terminal.
2. the method for claim 1, it is characterized in that, described method also comprises, when described terminal re-establishes request message due to the control of following condition initiation Radio Resource, according to concrete RRC, re-establish reason and control and carry concrete Radio Resource in re-establishing request message and control and re-establish cause value at described Radio Resource, described condition is: the handoff failure from E-UTRA to different system or integrity checking failure.
3. the method for claim 1, it is characterized in that, described radio link failure information comprises that RRC rebuilds the cell identity information of the second community and the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI of the second community that terminal occurs at Radio Link Failure of the cell identity information of first community of attempting, Radio Link Failure generation, the first community belongs to the first base station, the second community belongs to the second base station, while not preserving the contextual information of described terminal in the second base station, it is excessively late that the switching of described terminal from the second community to the first community adjudicated in the second base station.
4. the method for claim 1, it is characterized in that, described radio link failure information comprises that RRC rebuilds the cell identity information of first community of attempting, the cell identity information of the second community that Radio Link Failure occurs, with the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI of terminal in the second community of Radio Link Failure generation, the first community belongs to the first base station, the second community belongs to the second base station, in the second base station, remain with the contextual information of described terminal, and terminal is while being switched to the second community from the first community, it is too early to the switching of the second community from the first community that described terminal is adjudicated in the second base station, the second base station notifies the first base station terminal to switch too early from the first community to the second community.
5. the method for claim 1, it is characterized in that, described radio link failure information comprises that RRC rebuilds the cell identity information of first community of attempting, the cell identity information of the second community that Radio Link Failure occurs, with the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI of terminal in the second community of Radio Link Failure generation, the first community belongs to the first base station, the second community belongs to the second base station, when terminal is that Cong tri-communities are switched to the second community, and in the second base station, remain with the contextual information of described terminal, described the second base station is adjudicated described terminal Cong tri-communities and has been selected wrong cell to the switching of the second community, described in the 3rd base station under the second notice San community, base station, wrong cell has been selected to the switching of the second community in terminal Cong tri-communities.
6. a decision system for less desirable handoff scenario, is characterized in that, comprises terminal, the first base station and the second base station, wherein:
Described terminal, controls and re-establishes in request message at Radio Resource, increases cause value: Radio Link Failure, integrity checking failure, the handoff failure from E-UTRA to different system; For when Radio Link Failure, carrying out Radio Resource control re-establishes, send Radio Resource and control and re-establish request message to the first base station, at described Radio Resource, control and carry Radio Resource in re-establishing request message and control that to re-establish cause value be Radio Link Failure;
The first base station, be used for receiving described Radio Resource and control the request that re-establishes, only at Radio Resource, control when re-establishing cause value and being Radio Link Failure, just by radio link failure information, notify the second base station, base station corresponding to community that the Radio Link Failure that described the second base station is terminal occurs;
The second base station, for judging less desirable handoff scenario according to the handover information of described radio link failure information and terminal.
7. system as claimed in claim 6, it is characterized in that, described terminal, also for initiate Radio Resource due to following condition, control while re-establishing request message, according to concrete RRC, re-establish reason and control and carry concrete Radio Resource in re-establishing request message and control and re-establish cause value at described Radio Resource, described condition is: the handoff failure from E-UTRA to different system or integrity checking failure.
8. system as claimed in claim 6, is characterized in that,
The described radio link failure information that described the first base station sends comprises that RRC rebuilds the cell identity information of the second community and the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI of the second community that terminal occurs at Radio Link Failure of the cell identity information of first community of attempting, Radio Link Failure generation, the first community belongs to the first base station, and the second community belongs to the second base station;
The second base station, for knowing that according to radio link failure information the second community that Radio Link Failure occurs belongs to this base station, RRC rebuilds first community of attempting and belongs to the first base station, and the contextual information of described terminal is not preserved in the second base station, adjudicate the switching of described terminal from the second community to the first community excessively late.
9. system as claimed in claim 6, it is characterized in that, the described radio link failure information that described the first base station sends comprises that RRC rebuilds the cell identity information of the second community and the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI of the second community that terminal occurs at Radio Link Failure of the cell identity information of first community of attempting, Radio Link Failure generation, the first community belongs to the first base station, and the second community belongs to the second base station;
The second base station, for knowing that according to radio link failure information the second community that Radio Link Failure occurs belongs to this base station, RRC rebuilds first community of attempting and belongs to the first base station, in the second base station, remain with the contextual information of described terminal, and terminal is while being switched to the second community from the first community, adjudicate described terminal too early to the switching of the second community from the first community, notify the first base station terminal to switch too early from the first community to the second community.
10. system as claimed in claim 6, it is characterized in that, the radio link failure information that described the first base station sends comprises that RRC rebuilds the cell identity information of the second community and the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI of the second community that terminal occurs at Radio Link Failure of the cell identity information of first community of attempting, Radio Link Failure generation, the first community belongs to the first base station, and the second community belongs to the second base station;
Described the second base station, for knowing that according to radio link failure information the second community that Radio Link Failure occurs belongs to this base station, RRC rebuilds first community of attempting and belongs to the first base station, and terminal is that Cong tri-communities are switched to the second community, in the second base station, remain with the contextual information of described terminal, adjudicate described terminal Cong tri-communities and selected wrong cell to the switching of the second community, wrong cell has been selected to the switching of the second community in terminal Cong tri-communities described in the 3rd base station under San community.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910163154.1A CN101998466B (en) | 2009-08-17 | 2009-08-17 | Method and system for judging unexpected switched scene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910163154.1A CN101998466B (en) | 2009-08-17 | 2009-08-17 | Method and system for judging unexpected switched scene |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101998466A CN101998466A (en) | 2011-03-30 |
| CN101998466B true CN101998466B (en) | 2014-04-09 |
Family
ID=43787826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910163154.1A Expired - Fee Related CN101998466B (en) | 2009-08-17 | 2009-08-17 | Method and system for judging unexpected switched scene |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101998466B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110256871A1 (en) * | 2010-04-19 | 2011-10-20 | Motorola, Inc. | Mobility Influenced by Radio Uplink Failure |
| CN103906152B (en) * | 2012-12-24 | 2022-02-25 | 北京三星通信技术研究有限公司 | Method for supporting UE quick recovery |
| JP6071571B2 (en) * | 2013-01-17 | 2017-02-01 | Kddi株式会社 | Base station apparatus, communication system and communication method |
| KR101898948B1 (en) | 2013-02-28 | 2018-09-17 | 닛본 덴끼 가부시끼가이샤 | Radio communication system, radio station, radio terminal, communication control method, and non-temporary computer-readable medium |
| CN104254090B (en) * | 2013-06-25 | 2019-06-21 | 中兴通讯股份有限公司 | A kind of method, terminal, base station and system realizing Automatic Neighboring Relation and establishing |
| WO2015010301A1 (en) * | 2013-07-25 | 2015-01-29 | 富士通株式会社 | Information processing method and device thereof and communication system |
| WO2015027381A1 (en) * | 2013-08-26 | 2015-03-05 | 华为技术有限公司 | Radio link failure handling method, user equipment and base station |
| WO2015042832A1 (en) * | 2013-09-26 | 2015-04-02 | 华为技术有限公司 | Method for feeding back information and wireless network control node |
| CN104519506B (en) * | 2013-09-27 | 2020-02-07 | 北京三星通信技术研究有限公司 | Self-optimization method and device |
| CN104853390A (en) * | 2015-05-28 | 2015-08-19 | 武汉邮电科学研究院 | Failure handling method for S1 handover preparation phase of LTE system |
| CN110740483B (en) * | 2018-07-20 | 2021-09-28 | 中国移动通信集团设计院有限公司 | Information processing method and device in LTE switching process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101212775A (en) * | 2006-12-30 | 2008-07-02 | 华为技术有限公司 | Method and device for handling wireless link failures during switching process |
| CN101483898A (en) * | 2008-01-07 | 2009-07-15 | 华为技术有限公司 | Method and apparatus for accelerating RRC connection establishment |
| CN101500279A (en) * | 2008-02-03 | 2009-08-05 | 中兴通讯股份有限公司 | Wireless link recovery method |
| CN101505514A (en) * | 2008-02-04 | 2009-08-12 | 华为技术有限公司 | Processing method for handover failure, method and apparatus for detecting handover success |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009057941A2 (en) * | 2007-10-29 | 2009-05-07 | Lg Electronics Inc. | A method for repairing an error depending on a radion bearer type |
-
2009
- 2009-08-17 CN CN200910163154.1A patent/CN101998466B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101212775A (en) * | 2006-12-30 | 2008-07-02 | 华为技术有限公司 | Method and device for handling wireless link failures during switching process |
| CN101483898A (en) * | 2008-01-07 | 2009-07-15 | 华为技术有限公司 | Method and apparatus for accelerating RRC connection establishment |
| CN101500279A (en) * | 2008-02-03 | 2009-08-05 | 中兴通讯股份有限公司 | Wireless link recovery method |
| CN101505514A (en) * | 2008-02-04 | 2009-08-12 | 华为技术有限公司 | Processing method for handover failure, method and apparatus for detecting handover success |
Non-Patent Citations (3)
| Title |
|---|
| Huawei.R3-091107 MRO Signalling Requirements.《3GPP TSG-RAN WG3 #64》.2009, * |
| Nokia Siemens Networks.R3-091357 RLF Reports for Mobility Robustness Optimization.《3GPP TSG RAN WG3 Meeting #64》.2009, * |
| ZTE.R3-091201 Complementarity of Mobility Robustness Optimization Use Case.《3GPP TSG-RAN WG3 #64》.2009, * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101998466A (en) | 2011-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101998466B (en) | Method and system for judging unexpected switched scene | |
| CN101959262B (en) | Method and device for notifying handover failure indication information | |
| CN102300278B (en) | A kind of decision method of handoff scenario and system | |
| CN102026165B (en) | Method and system for identifying terminal | |
| CN101959263B (en) | Method and device for transmitting radio link failure information | |
| EP2434797B1 (en) | Method and apparatus for judging matching of reselection parameters and handover parameters between cells | |
| JP5698843B2 (en) | Method for providing information, mobile station apparatus, base station apparatus, and communication apparatus | |
| CN102143539B (en) | Method and system for acquiring context of terminal | |
| IL259463A (en) | Light-weight radio-resource control (rrc) connection setup in multi-radio access technology (rat) network | |
| CN102413528B (en) | The processing method of handoff failure and subscriber equipment | |
| CN101909338B (en) | Terminal identification acquisition method between base stations and terminal identification method | |
| CN101848553B (en) | Reestablishing method of RRC (Radio Resource Control) connection in LTE (Long Term Evolution) system and base station | |
| CN102598778B (en) | Method for determining reason for too late handover to home base station | |
| CN105764065A (en) | Method and device with application of cell connection establishment failure report | |
| CN102348217B (en) | Handoff procedure determines the method and system of target network element | |
| CN114205883A (en) | Network slice remapping method, device and storage medium | |
| CN102316509B (en) | The report method of correlation measurement information of radio link failure and system | |
| CN103517322B (en) | For providing the method and apparatus of information in cellular radio communication system | |
| US20170006520A1 (en) | Handover method, terminal, base station, and system | |
| CN102065498A (en) | Switching information processing method and base station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20170817 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |