CN103733681A - Releasing time domain measurement restrictions - Google Patents
Releasing time domain measurement restrictions Download PDFInfo
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- CN103733681A CN103733681A CN201180072832.9A CN201180072832A CN103733681A CN 103733681 A CN103733681 A CN 103733681A CN 201180072832 A CN201180072832 A CN 201180072832A CN 103733681 A CN103733681 A CN 103733681A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
- H04W36/0094—Definition of hand-off measurement parameters
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
- H04W36/0088—Scheduling hand-off measurements
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Abstract
In some implementations, a method includes identifying handover from a source eNodeB (eNB) to a target eNB or reestablishment with a subsequent eNB after losing connection with an initial eNB. Time-domain measurement resource restrictions for the UE are identified. The time-domain measurement resource restriction for the UE is released in connection with identifying the handover or the reestablishment.
Description
Technical field
The present invention relates to communication network, relate more specifically to discharge time domain measurement restriction.
Background technology
Heterogeneous network (HetNet) is the network that comprises macrocell and low power nodes (for example, picocell, Femto cell and relaying).Low power nodes or small-cell overlap on macrocell in frequency, may share same frequency.These small-cells can alleviate the burden of macrocell, improve indoor and cell-edge performance, or other benefits are provided.3GPP research (Release 10) for LTE evolution comprises that HetNet deployment strengthens and enables key element as main performance.In HetNet disposes, Inter-Cell Interference Coordination (ICIC) plays an important role, and has adopted the resource-sharing based on time domain or coordinated as the ICIC (eICIC) strengthening, and eICIC comprises based on the scheme of blank subframe (ABS) almost.Two main deployment scenario utilizing eICIC are determined in LTE evolution (LTE-A).First or CSG (Femto cell) scene in, when non-Member Users is during near CSG community, may there is main disturbed condition.In some instances, from the downlink transmission of non-member CSG community, may significantly disturb physical downlink control channel (PDCCH).Interference for the PDCCH of macrocell has adverse effect to the up link between UE and macrocell and downlink transmission.In addition, from the downlink transmission of non-member CSG community also may interference source from macrocell and neighbor cell and can be for other downlink control channels and the reference signal of cell measurement and radio link supervision.According to network design and strategy, system possibly cannot make the user who is subject to presence of intercell interference forward another E-UTRA carrier wave or other radio access technologies (RAT) to.Time domain ICIC can be for allowing this non-member UE to keep providing service by macrocell on same frequency layer.Can utilize almost blank subframe (ABS) to protect the subframe of corresponding macrocell to make it interference-free in YouCSG community, to eliminate, to minimize or to reduce, disturb.Can utilize shielded resource to measure providing the macrocell of service to carry out radio resource measurement (RRM), radio link supervision (RLM) and channel condition information (CSI) by the non-member UE of signaling, to allow UE to continue to provide service by macrocell under the strong jamming from CSG community.
Second or picocell scene in, can be by time domain ICIC for the serviced picocell user in edge that the picocell of service is provided, for example, for business burden is unloaded to picocell from macrocell.Conventionally, may severe jamming PDCCH from the downlink transmission of macrocell.In addition, the downlink transmission from macrocell also may affect other downlink control channels and the reference signal from picocell and adjacent picocell.Other downlink control channels and reference signal can be for cell measurement and radio link supervisions.Can utilize time domain ICIC, to allow this class UE to keep providing service by picocell on same frequency layer.Can, by utilized ABS to protect the subframe of corresponding picocell so that it is interference-free by macrocell, reduce this interference.UE by picocell service can measure providing the picocell of service to carry out radio resource measurement (RRM), radio link supervision (RLM) and channel condition information (CSI) by shielded resource.
For time domain ICIC, by operational administrative (OAM) configuration of backhaul signaling or so-called abs mode, coordinate the subframe utilization between different districts in time.Usually, with the ABS in interference source community, protect the sub-frame resources in community that is disturbed receiving from the strong presence of intercell interference of interference source community.ABS has the through-put power (comprising not transmission) reducing and/or the movable subframe reducing on some physical channel.ENB guarantees the downward compatibility for UE by transmitting necessary control channel and physical signalling and system information.Pattern to UE signaling based on ABS, so that UE Restriction of the Measuring is arrived to specific sub-frame, this is called time domain measurement resource limitation.For example, according to the type of measured community (Serving cell or neighbor cell) and measurement type (, RRM, RLM), can realize different mode.In some cases, grand eNB (interference source) configures abs mode, and sends it to slight eNB (side of being disturbed).Grand eNB does not dispatch the transfer of data in ABS subframe, to protect the UE that slight eNB was served in edge, picocell.Slightly eNB can be to from dispatching with the transmission of going to the UE of center of housing estate, and no matter abs mode how.Meanwhile, slightly eNB only with in ABS to from dispatching with the transmission of going to the UE of cell edge.Picocell can be based on receiving abs mode, utilize respectively three kinds of different measurement resource limitations to be configured the UE in cell edge.The first restriction can be RRM measurement and the radio link supervision (RLM) for PCell (being the service picocell in basic frequency in this case).If be configured, UE only measures and carries out the RLM of PCell in configuration subframe.The second restriction is in basic frequency, to carry out the RRM of neighbor cell to measure.If be configured, UE only measures neighbor cell in configuration subframe.This restriction can also comprise restriction by the target neighbor cell being applied to.The 3rd restriction is to estimate for the channel status of PCell.If be configured, UE only estimates CSI and CQI/PRM/RI in configuration subframe.
According to current radio resource, control (RRC) protocol specification, MeasSubframePatternConfigNeigh is optional (need ON) information unit (IE) in EUTRA measuring object measObjectEUTRA.Phrase " need ON " refers to, and when this information unit does not exist, UE holds fire, and at where applicable, continues to use existing value (and/or the function being associated).
In some scenes, intra-frequency can be switched to UE the eNB of Release 8 or 9 or not have the LTE system of eICIC/HetNet feature or the region that LTE-A system (with supporting that the LTE-A system of eICIC/HetNet feature is contrary) is managed.Target eNB is prepared switching command, but target eNB is not supported time domain measurement resource limitation.Do not utilizing full config option (by this full config option, can discharge and comprise all radio configuration of measuring in being configured in) situation under, target Release 8 or 9 eNB cannot indicates to the release of this restriction or after switching and discharge this restriction by reconfiguration message in ready switching command.Utilize full config option, the size of reconfiguration message is than this option is not large.Therefore, the use of this option should be limited, to maintain efficient operation.In addition the target LTE-A eNB that, does not have eICIC/HetNet feature may not indicate UE to discharge Restriction of the Measuring.Therefore, owing to not comprising measSubframePatternConfigNeigh in switching command, so UE will continue this restriction of application.In the example of intra-frequency, can apply inconsistently the measurement resource limitation for neighbor cell, that is, UE applies this restriction, and eNB does not apply.Owing to neighbor cell being had to or do not have the difference of the performance requirement (detection time of RSRP and RSRQ accuracy and neighbor cell) of measuring resource limitation, inconsistent application may cause unexpected switching or radio link failure.In the situation that thering is the resource limitation of measurement, need better Signal to Interference plus Noise Ratio (SINR), to compare with hard-core situation and there is identical RSRP (Reference Signal Received Power) and RSRQ (Reference Signal Received Quality) accuracy, so it is poor that the accuracy of the measurement result that the UE of application restric-tion reports may be expected than eNB, this may cause unexpected switching.In addition, utilizing Restriction of the Measuring to detect community in side frequency needs the longer time, and this may cause radio link failure.Source eNB can carry out to measure and reshuffle in the switching of preparation and target eNB.Yet, due to this additional treatments, switching and carry out and may be postponed, this causes higher handover failure rate.
About switch instances between frequency, between frequency, switch (f1 is to f2) afterwards, the time domain measurement resource limitation configuring for source basic frequency (f1) shall not be applied to f1 (because f1 is no longer basic frequency after switching), but be maintained (not discharging), unless connect reconfiguration message and explicitly will so be done by RRC.According to the release of target eNB or the support to eICIC/HetNet feature, for the time domain measurement resource limitation of neighbor cell, can apply inconsistently, that is, UE applies this restriction, but eNB does not apply.Inconsistent application may cause unexpected switching as above or radio link failure.
In some scenes, in above-mentioned switching (f1 is to f2) afterwards, between follow-up frequency, switch (f2 is to f1) and UE is introduced to the eNB of Release 8 or 9 or do not there is the region that the LTE-A eNB of eICIC/HetNet feature manages.Target eNB is prepared switching command.In this case, target eNB is not supported time domain measurement resource limitation.Do not utilizing full config option (by this full config option, can discharge and comprise all radio configuration of measuring in being configured in) situation under, target Release 8 or 9 eNB cannot indicates to the release of this restriction or after switching and discharge this restriction by reconfiguration message in ready switching command.Utilize full config option, the size of reconfiguration message is than this option is not large.Therefore, the use of this option should be limited, to maintain efficient operation.In addition the target LTE-A eNB that, does not have eICIC/HetNet feature may not indicate UE to discharge Restriction of the Measuring.Therefore, UE restarts the application restric-tion to f1 when switching.Situation when the problems referred to above are also applicable to UE reconstruction RRC connection.May apply inconsistently the time domain measurement resource limitation for neighbor cell, this may cause another radio link failure or unexpected switching.
In some scenes, after having experienced radio link failure, UE can find suitable community, and at the eNB by Release 8/9 or do not have and rebuild RRC in the community that the LTE-A eNB of eICIC/HetNet feature controls and connect.In this case, follow-up eNB does not support time domain measurement resource limitation.Do not utilizing in the situation of full config option (by this full config option, can discharge and comprise all radio configuration of measuring in being configured in), follow-up Release8 or 9 eNB cannot indicate the release to limiting by reconfiguration message after rebuilding.Utilize full config option, the size of reconfiguration message is than this option is not large.Therefore, the use of this option should be limited, to maintain efficient operation.In addition the follow-up LTE-A eNB that, does not have eICIC/HetNet feature may not indicate UE to discharge Restriction of the Measuring.Therefore, UE will start to apply this restriction when rebuilding.Regardless of UE, rebuild the frequency that RRC connects the community at place, this problem all exists.
In some scenes, UE rebuilds RRC and connects in the community of no longer applying this restriction.ENB discharges this restriction by send reconfiguration message after process of reconstruction, but transmission of messages postpones because the burden on eNB is heavier, or message is because radio condition is poor and cannot arrive UE.Meanwhile, UE restarts to apply this restriction.Regardless of UE, rebuild the frequency that RRC connects the community at place, this problem all exists.
Accompanying drawing explanation
Fig. 1 be according to execution modes more of the present disclosure for discharging the example system of time domain measurement resource limitation;
Fig. 2 is the example LTE system of Fig. 1;
Fig. 3 has illustrated the example UE of Fig. 1;
Figure 4 and 5 have been illustrated for discharging the exemplary method of time domain measurement restriction;
Fig. 6 has illustrated to comprise the example MobilityControlInfo information unit of preserveMeasSubframePatternNeigh;
Fig. 7 has illustrated to comprise the example RRCConnectionReestablishment message of preserveMeasSubframePatternNeigh;
Fig. 8 has illustrated for discharging another exemplary method of time domain measurement resource limitation;
Fig. 9 has illustrated example MeasObjectEUTRA information unit;
Figure 10 has illustrated example HandoverPreparationInformation message;
Figure 11 has illustrated for discharging the flow chart of the another exemplary method of time domain measurement restriction; And
Figure 12 has illustrated for discharging the flow chart of another exemplary method of time domain measurement restriction.
Like reference numerals indication analogous element in each accompanying drawing.
Embodiment
The disclosure relate to according to execution modes more of the present disclosure for discharging the system and method for time domain measurement resource limitation.For example, UE can discharge the time domain measurement resource limitation for neighbor cell when switching or rebuild.UE can discharge the time domain measurement resource limitation for neighbor cell configuring for source basic frequency, target basic frequency or any EUTRA frequency.Usually, the LTE system or the LTE-A system (contrary with LTE evolution (LTE-A) system with eICIC/HetNet feature) that do not have an eICIC/HetNet feature comprise the eNB or the traditional eNB that do not support time domain measurement resource limitation.In order to eliminate the caused problem of eNB without eICIC/HetNet feature, can automatically discharge the measurement resource limitation for neighbor cell configuring for target basic frequency, to avoid carrying out this restriction with UE, eNB does not carry out the problem that this restriction is associated.For example, UE can identify and switches or rebuild, and automatically discharges for target basic frequency, for source basic frequency or for any time domain measurement resource limitation of any EUTRA frequency.By in response at least switching or rebuilding and automatically discharge the restriction configuring for target basic frequency, can minimize or reduce the impact of pre-configured restriction, and can fully avoid problem.This execution mode is simple scheme, and can be with RRC signaling irrelevant or do not change RRC signaling and carry out.In addition, this scheme can be carried out according to Release 10 standards.After having discharged this restriction, if need identical restriction in Target cell, target eNB can be rebuild this restriction.
When source eNB switches preparation to target eNB request, source eNB indicates ue-ConfigRelease, and ue-ConfigRelease indication is applicable to the RRC protocol version of current UE configuration.For example, when having configured time domain measurement restriction to UE, ue-ConfigRelease is set to Release 10.This information can be used for determining whether by target eNB should use full allocation plan.If this field does not exist, target eNB hypothesis current UE configures the RRC agreement based on Release 8 versions.Full config option comprises the initialization of radio configuration, the configuration (except rebuilding and continue to use security algorithm for RRC) that this is independent of this process to use in cell-of-origin.The size of reconfiguration message increases along with full config option, so its use should be limited, to maintain efficient operation.What utilization proposed discharges Restriction of the Measuring automatically by UE, source eNB can be set to Release 8 or 9 by ue-ConfigRelease, to avoid the eNB of target Release 8 or 9 entirely to configure (even if being also like this) when having configured time domain measurement restriction to UE.In the region of network that utilizes time domain measurement restriction, service eNB can avoid using defined more senior multi-antenna transmitting transferring technology in Release 10.Therefore, by UE, automatically discharge time domain measurement and limit, in the LTE-A system from thering is eICIC/HetNet feature, to the switching of LTE system or while rebuilding, avoid the chance of full configuration to increase.Alternatively, can expand as illustrated in fig. 10 handover preparation request, to indicate, not need full weight configuration, wherein Figure 10 has illustrated example HandoverPreparationInformation message 1000.
In some embodiments, can come to discharge time domain measurement resource limitation for neighbor cell by measSubframePatternConfigNeigh being defined as to " need OR " in MeasObjectEUTRA information unit.Phrase " need OR " refers to, if UE receives this message, and in the non-existent situation of this information unit, UE can stop, stop using, deletes or otherwise discharge any existing value.In other words, if information unit indication UE maintains time domain measurement resource limitation, UE can maintain this restriction.Not existing of this information unit can indicate UE to discharge time domain measurement resource limitation.In order to realize this scheme, can upgrade the RRC signaling definition in Release 10.
In some embodiments, target eNB can indicate whether to keep the time domain measurement resource limitation for neighbor cell in switching command.This keeps the indication can be for target basic frequency only, only source basic frequency or the measuring object of EUTRA frequency arbitrarily.For example, if same restrictions is applicable to Target cell, can indicate this maintenance for target frequency, this can eliminate and again configure this restriction.This indication can connect and in reconfiguration message, send to UE at RRC.If UE receives in reconfiguration message, keep indication, UE can maintain measurement resource limitation for the specified frequency of this maintenance indication, and discharges the measurement resource limitation for other EUTRA frequencies.If there is no keep indication, UE can discharge the time domain measurement resource limitation for neighbor cell configuring for target basic frequency, source basic frequency or any EUTRA frequency.In the situation that target eNB is Release 8 or 9, do not exist and keep indication, UE can discharge the Restriction of the Measuring configuring for target basic frequency, source basic frequency or any EUTRA frequency.In process of reconstruction, the eNB of processing reconstructed indicates whether to keep for target basic frequency, source basic frequency or the restriction of EUTRA frequency arbitrarily.If previously the restriction of configuration was applicable to occur the community of reconstruction, can in RRC connection reconstruction message, send this indication.
In some embodiments, if be set to discharge by measSubframePatternConfigNeigh in ready switching command, to UE, configure this restriction, the target LTE-A eNB indication UE without eICIC/HetNet feature discharges time domain measurement resource limitation.
As mentioned above, some execution modes can comprise that additional information cell indicates whether to keep restriction.Another program can be that the switching command that source eNB prepares to target eNB adds measurement configuration information unit.For example, if need explicit release to measure resource limitation, the switching command that source eNB can prepare in target eNB comprises this indication.Source eNB can obtain by OAM system the knowledge of the release information of target eNB.Alternatively or in addition, X2 interface can be expanded to the release information that transmits eNB.
Get back to the description to environment, Fig. 1 has illustrated about the example system 100 of the release time domain measurement resource limitation that switches or rebuild.For example, system 100 can be in response at least switching or rebuilding and discharge the time domain measurement resource limitation for frequency, preset frequency or the pre-configured frequency of appointment.As shown in the figure, system 100 comprises LTE system or the LTE-A system (non-eICIC LTE system) 102 without eICIC/HetNet feature and the LTE system (eICIC LTE system) 104 with eICIC/HetNet feature, and eICIC LTE system 104 is configured for UE106 communicates by letter.Non-eICIC system 102 comprises that base station 108a can have the signal coverage areas partly being represented by dotted line 110a for carrying out the base station 108a of radio communication with UE106.As mentioned previously, for example, to compare with the LTE-A system (, eICIC system 104) with eICIC/HetNet feature, non-eICIC system 102 is not configured to carry out time domain measurement resource limitation.System 104 comprises that base station 108b can have the signal coverage areas partly being represented by dotted line 110b for carrying out the base station 108b of radio communication with UE106.EICIC system 104 is configured for uses ABS to carry out time domain measurement resource limitation.In some embodiments, UE106 can carry out following one or more: identification is switched or rebuild; About switching or rebuilding, discharge time domain measurement resource limitation; In response to switching or rebuilding, automatically discharge time domain measurement resource limitation; From eICIC system 104 receipt messages, this message comprises that to UE106 indication be the information that discharges or maintain time domain measurement resource limitation; Release is for target basic frequency, source basic frequency, initial basic frequency, follow-up basic frequency or the restriction of at least one in EUTRA frequency arbitrarily.By discharging time domain, limit, can eliminate or reduce the inconsistent application to restriction, thus can be by avoiding unexpected switching and radio link unsuccessfully to improve mobile robustness.
Forward to and describe in more detail each element, non-eICIC system 102 utilizes base station 108a or eNB 108 to carry out radio communication.In some embodiments, non-eICIC system 102 can comprise a plurality of eNB.In some embodiments, non-eICIC system 102 and network service, this network provides and being connected of other cordless communication networks and wireline communication network.Non-eICIC system 102 can utilize wireless technology OFDM (OFDM) to communicate by letter with UE106.Similarly, eICIC system 104 comprises eNB108b, and utilizes ofdm communication.In addition, eICIC system 104 can be by coordinating to carry out almost blank subframe (ABS) via backhaul signaling or operational administrative (OAM) configuration in time, to reduce presence of intercell interference.EICIC system 104 can be protected with the ABS in interference source community the sub-frame resources community that is disturbed that receives strong presence of intercell interference from interference source community.As mentioned previously, ABS has the through-put power (comprising not transmission) reducing and/or the movable subframe reducing on some physical channel.The pattern that eNB 108b can signal and communicate by letter based on ABS to UE106, so that UE Restriction of the Measuring is arrived to specific sub-frame, this is called time domain measurement resource limitation.For example, according to the type of measured community (Serving cell or neighbor cell) and measurement type (, RRM, RLM), can realize different mode.
Usually, UE 106 can receive and the wireless and/or contactless communication of transmission and system 100.As used in this disclosure, UE 106 be intended to comprise one or more processors in cell phone, Data-phone, beep-pager, portable computer, SIP phone, smart phone, personal digital assistant (PDA), digital camera, MP3 player, photography video tape recorder, these or other equipment or can with any other suitable treatment facilities of LTE system 102 and LTE-A system 104 communication informations.In some embodiments, UE 106 can be based on cellular radio power technology.For example, UE 106 can be used to the PDA that carries out wireless connections with outside or insecure network.In another example, UE 106 can comprise and have input equipment the output equipment of information (comprising numerical data, visual information) or the smart phone of graphic user interface (GUI) 112 that (for example, keyboard, display screen, mouse, the arbitrary equipment that maybe can receive information) and transmission are associated with LTE system 102 and LTE-A system 104.
GUI 112 comprise can be used to allow UE 106 user for example, for suitable arbitrarily object (, authorizing the startup that presents warning notice) with the graphic user interface of at least a portion interface of system 100.Usually, GUI 112 provides that provide to system 100 to specific user or the data of system 100 interior communications efficient and friendly, present and/or also to specific user, be provided for the efficient and friendly means of the service that the setting of user's self-management and access PLMN 102 provide.GUI 112 can comprise a plurality of customizable frame or the view of interaction fields, drop-down list and/or the button with user's operation.Term graphic user interface can be used with odd number or plural form, to describe the demonstration each time of one or more graphic user interface and special pattern user interface.GUI 112 can comprise arbitrary graphic user interface, for example the information in treatment system 100 present general-purpose web browser or the touch-screen of result to user.
With reference to Fig. 2, LTE network 200 comprises core net and the LTE radio access network (for example, evolution UTRAN (E-UTRAN)) that is called as evolution block core (EPC).Core net is provided to the connection of the external network such as the Internet 230.LTE network 200 comprises one or more base station (for example, eNodeB (eNB) base station 210a and 210b), is provided to the wireless service of one or more equipment (for example, UE 205).
Core net based on EPC can comprise gateway (SGW) 220, Mobility Management Entity (MME) 215 and packet gateway (PGW) 225.SGW 220 can be in core net routing service.MME 215 is responsible for UE 205 and adheres to the core network mobility control of core net, and is responsible for maintaining and the contacting of idle pulley UE.PGW 225 is responsible for business from/230 enter/go out to the Internet.PGW 225 can give UE 205 distributing IP addresses.
Wireless communication system based on LTE has defined network interface between system element.Network interface is included in the Uu interface that defines between UE and eNB, at the S1U interface in the user plane defining between eNB and SGW, the S1C chain of command interface of definition between eNB and MME (also referred to as S1-MME) and the S5/S8 interface defining between SGW and PGW.Note, the combination of S1U and S1C is often reduced to " S1 ".
Fig. 3 shows example UE 305, and UE 305 comprises the processor electronic device 310 such as realizing the processor of the one or more technology presented herein.UE 305 can comprise transceiver electronic device 315, for carrying out sending and receiving wireless signal by the one or more communication interfaces such as one or more antennas 320.UE 305 can comprise other communication interfaces for transmitting and receive data.In some embodiments, UE 305 can comprise for the one or more wired network interfaces with wired network communication.In other embodiments, UE 305 can comprise for example, one or more data-interfaces 330 for I/O (I/O) user data (, inputting, arrive figure output, touch-screen input, oscillator, accelerometer, test port or the debug port of display from the text of keyboard).UE 305 can comprise one or more memories 340, is configured for the information of storage such as data and/or instruction.In other embodiments, processor electronic device 310 can comprise at least a portion of transceiver electronic device 315.
Fig. 4,5 and 8 has illustrated for discharging the exemplary method 400,500 of time domain measurement resource limitation and 800 flow chart.About the system 100 of Fig. 1, describe illustrated method 400,500 and 800, but the method can be used by any other suitable system.In addition, system 100 can be carried out these tasks with any other proper technology.Therefore, the many steps in this flow chart can occur simultaneously and/or with from shown in order different occurring in sequence.System 100 also can be used the method with additional step, less step and/or different step, as long as method keeps suitably.In addition, do not deviating under the prerequisite of disclosure scope, system 100 can have the setting based on other granularity.
With reference to Fig. 4, method 400 is in response to switching or rebuilding and automatically discharge the flow chart of time domain measurement resource limitation.About E-UTRAN, carry out and switch, configuration is switched the corresponding measObjectId of target basic frequency with each.About E-UTRAN, carry out to rebuild, configuration is switched the corresponding measObjectId of target basic frequency with each, and after reconstruction follow-up connection reconfiguration course and then.
Get back to Figure 11, method 1100 is for switched the flow chart of preparing as source eNB by eICIC LTE eNB104.Method 1100 starts from step 1102, in step 1102, and the target eNB that source eNB104 selects UE 106 to be switched to.In step 1104, source eNB 104 generates switching warning order illustrated in Figure 10.If determined except time domain measurement restriction not to UE configuration Release 10 features in step 1106, source eNB is set to Release 8 or 9 according to the version of the feature of configuration in UE 106 by ue-ConfigRelease (1002 in Figure 10), to prevent that target eNB from adopting full config option.If only configure Release 8 features except time domain measurement restriction, can not comprise ue-ConfigRelease.Source eNB 104 can also be set to FALSE (puppet) by FullConfig (1004 in Figure 10), to prevent that target eNB from adopting full config option.If determine except time domain measurement restriction and configured Release 10 features to UE in step 1106, in step 1110, source eNB ue-ConfigRelease is set to Release 10.In step 1112, source eNB 104 sends and switches warning order to target eNB.Said method can be applied to other Release 10 features except time domain measurement restriction.
With reference to Fig. 5, method 500 be about switch or rebuild in communication, keep indication time discharge the flow chart of time domain measurement resource limitation.For example, can when switching or rebuild, be discharged by UE 106 the measurement resource limitation (not indicating it to keep if as follows) for neighbor cell.About E-UTRAN, carry out and switch, configuration is switched the corresponding measObjectId of target basic frequency with each.About E-UTRAN, carry out to rebuild, configuration is switched the corresponding measObjectId of target basic frequency with each, and after reconstruction follow-up connection reconfiguration course and then.
Method 500 starts from step 502, in step 502, and each measId that the measIdList in UE 106 identification VarMeasConfig comprises.If determine that in determination step 504 triggerType is set to periodical (cycle), in step 506, removes this measId the measIdList of UE 106 in VarMeasConfig.In addition, carry out and advance to determination step 508.If do not comprise PreserveMeasSubframePatternNeigh, in step 510, if for target basic frequency, configure for source basic frequency or for any EUTRA frequency, UE106 discharges MeasSubframePatternConfigNeigh in measObjct.If comprise PreserveMeasSubframePatternNeigh, in step 512, if have the frequency of indication to configure for PreserveMeasSubframePatternNeigh in measObject, UE106 discharges MeasSubframePatternCofigNeigh about switching so, and Fig. 6 has illustrated to comprise the example MobilityControlInfo information unit 600 of preserveMeasSubframePatternNeigh.This field is used to indicate when switching will maintain measSubframePatternConfigNeigh for for which frequency.SOURCE (source) refers to the restriction keeping source basic frequency, and TARGET (target) refers to the restriction keeping target basic frequency, and ANY (arbitrarily) refers to the restriction of maintenance to any EUTRA frequency.About rebuilding, Fig. 7 has illustrated to comprise the example RRCConnectionReestablishment message 700 of preserveMeasSubframePatternNeigh.This field is used to indicate when rebuilding will maintain measSubframePatternConfigNeigh for for which frequency.SOURCE (source) refers to the restriction keeping source basic frequency, and TARGET (target) refers to the restriction keeping target basic frequency, and ANY (arbitrarily) refers to the restriction of maintenance to any EUTRA frequency.If this process is owing to switching or successfully rebuilding and be triggered, and processes and be included in determination step 514 and change basic frequencies, in step 516, the measId value in the measIdList that UE 106 upgrades in VarMeasConfig.If there is the measObjectId value corresponding with target basic frequency in determination step 518, in step 520, if measId value is associated with the measObjectId value corresponding to source basic frequency, measId value is associated with the measObjectId value corresponding to target basic frequency.In step 522, if measId value is associated with the measObjectId value corresponding to target basic frequency, this measId value is associated with the measObjectId value corresponding to source basic frequency.Return to determination step 528, the if there is no measObjectId value corresponding with target basic frequency, in step 524, all measId values that the measObjectId value with corresponding to source basic frequency is associated all remove.
With reference to Fig. 8, method 800 relates to and redefines existing information unit or measSubframePatternConfigNeigh, so that do not discharging time domain measurement resource limitation receive explicit signaling in the situation that about switching or rebuilding.Current, by be defined as optionally-Need ON of measSubframePatternConfigNeigh, therefore need explicit release to stop its application.Method 800 becomes this value into Need OR from Need ON, so that discharge the measSubframePatternConfigNeigh of configuration do not receive explicit signaling when switching or rebuild in the situation that.Fig. 9 has illustrated to comprise the example MeasObjectEUTRA information unit measSubframePatternConfigNeigh of Need OR value.
With reference to Figure 12, method 1200 is for switched the flow chart of preparing as target eNB by the non-ICIC eNB 102 of LTE-A.In step 1202, target eNB 102 receives switching warning order as schematically shown in Figure 10 from source eNB.In step 1204, the reserved radio resource for UE 106 of target eNB 102 also generates switching command.If determine to UE 106 and configured time domain measurement restriction in step 1206,, in step 1208, target eNB 102 measSubframePatternConfigNeigh in the measObject of target basic frequency, source basic frequency or any EUTRA frequency is set to discharge.In step 1210, target eNB 102 sends it back source eNB by switching command.Above method can be applied to other Release 10 features except time domain measurement restriction that LTE-A target eNB is not supported.
Some embodiments of the present invention have been described.However, it will be understood by those skilled in the art that under the prerequisite that does not deviate from the spirit and scope of the present invention and can carry out various modifications.For example, when source eNB knows that target eNB is Release 8/9, source eNB can discharge measurement resource limitation by adding measurement configuration information unit to this order before the switching command preparing to UE transmission target eNB.Correspondingly, other embodiment within the scope of the appended claims.
Claims (41)
1. a method, comprising:
The switching of identification from source eNodeB (eNB) to target eNB or lost with after being connected of initial eNB with the reconstruction of follow-up eNB;
Identification is for the time domain measurement resource limitation of UE; And
About identification, switch or rebuild, discharging the time domain measurement resource limitation for UE.
2. method according to claim 1, wherein, discharges time domain measurement resource limitation and comprises: in response to switching or rebuilding, automatically discharge time domain measurement resource limitation.
3. method according to claim 1, wherein, discharges time domain measurement resource limitation and comprises:
The radio communication of reception about switching or rebuilding; And
Determine that radio communication does not maintain the parameter of time domain measurement resource limitation to UE indication.
4. method according to claim 3, wherein, described radio communication is EUTRAN measuring object, and described parameter comprises the preserveMeasSubframePatternNeigh information unit (IE) in measuring object.
5. method according to claim 3, wherein, described radio communication is that RRC connects reconfiguration message, and described parameter comprises that RRC connects the maintenance indication in reshuffling.
6. method according to claim 3, wherein, described radio communication is the RRC connection reconstruction message from auxiliary eNB, and described parameter comprises the maintenance indication in RRC connection reconstruction.
7. method according to claim 1, wherein, discharging time domain measurement resource limitation comprises: discharge the time domain measurement resource limitation for neighbor cell for following at least one: target basic frequency, source basic frequency, initial basic frequency, follow-up basic frequency, any predetermined or pre-configured frequency of EUTRAN frequency.
8. a subscriber equipment (UE), comprising:
One or more processor, is configured for:
The switching of identification from source eNodeB (eNB) to target eNB or lost with after being connected of initial eNB with the reconstruction of follow-up eNB;
Identification is for the time domain measurement resource limitation of UE; And
About identification, switch or rebuild, discharging the time domain measurement resource limitation for UE.
9. UE according to claim 8, wherein, is configured for described one or more processor that discharges time domain measurement resource limitation and comprises: be configured in response to switching or rebuilding, automatically discharge one or more processor of time domain measurement resource limitation.
10. UE according to claim 8, is wherein configured for described one or more processor that discharges time domain measurement resource limitation and comprises: one or more processor, is configured for:
The radio communication of reception about switching or rebuilding; And
Determine that radio communication does not maintain the parameter of time domain measurement resource limitation to UE indication.
11. UE according to claim 10, wherein, described radio communication is EUTRAN measuring object, and described parameter comprises the preserveMeasSubframePatternNeigh information unit (IE) in measuring object.
12. UE according to claim 10, wherein, described radio communication is that RRC connects reconfiguration message, and described parameter comprises that RRC connects the maintenance indication in reconfiguration message.
13. UE according to claim 10, wherein, described radio communication is the RRC connection reconstruction message from auxiliary eNB, and described parameter comprises the maintenance indication in RRC connection reconstruction message.
14. UE according to claim 8, wherein, described one or more processor that is configured for release time domain measurement resource limitation comprises: one or more processor, is configured for the time domain measurement resource limitation for neighbor cell discharging for following at least one: target basic frequency, source basic frequency, initial basic frequency, follow-up basic frequency, any predetermined or pre-configured frequency of EUTRAN frequency.
15. 1 kinds of computer programs that are coded on non-instantaneous tangible storage medium, described product comprises computer-readable instruction, described computer-readable instruction makes at least one processor carry out the operation that comprises the following:
The switching of identification from source eNodeB (eNB) to target eNB or lost with after being connected of initial eNB with the reconstruction of follow-up eNB;
Identification is for the time domain measurement resource limitation of UE; And
About identification, switch or rebuild, discharging the time domain measurement resource limitation for UE.
16. computer programs according to claim 15, wherein, comprise that the operation that discharges time domain measurement resource limitation comprises: in response to switching or rebuilding, automatically discharge the operation of time domain measurement resource limitation.
17. computer programs according to claim 15, wherein, comprise that the operation that discharges time domain measurement resource limitation also comprises following operation:
The radio communication of reception about switching or rebuilding; And
Determine that radio communication does not maintain the parameter of time domain measurement resource limitation to UE indication.
18. computer programs according to claim 17, wherein, described radio communication is EUTRAN measuring object, and described parameter comprises the preserveMeasSubframePatternNeigh information unit (IE) in measuring object.
19. computer programs according to claim 17, wherein, described radio communication is that RRC connects reconfiguration message, and described parameter comprises that RRC connects the maintenance indication in reconfiguration message.
20. computer programs according to claim 17, wherein, described radio communication is the RRC connection reconstruction message from auxiliary eNB, and described parameter comprises the maintenance indication in RRC connection reconstruction message.
21. computer programs according to claim 15, wherein, comprise that the operation that discharges time domain measurement resource limitation comprises: discharge the operation for the time domain measurement resource limitation for neighbor cell of following at least one: target basic frequency, source basic frequency, initial basic frequency, follow-up basic frequency, the predetermined or pre-configured frequency of EUTRAN frequency arbitrarily.
22. 1 kinds of methods, comprising:
By source eNB, recognized the switching of target eNB;
Identification is for the time domain measurement resource limitation of UE; And
Based on switching or rebuilding, to UE, send message, to maintain the time domain measurement resource limitation for UE.
23. methods according to claim 22, also comprise:
From target eNB, receive switching command; And
The measSubframePatternConfigNeigh information unit (IE) that utilization is used to indicate release time domain measurement resource limitation upgrades described switching command, wherein, the message sending comprises that the RRC of the switching command with renewal connects reconfiguration message.
24. methods according to claim 22, also comprise:
To target eNB, send the request for the information of marked network type; And
Response based on from target eNB, determines that target eNB provides service by LTE network.
25. methods according to claim 24, wherein, described request is used X2 interface or operational administrative (OAM) system to send.
26. methods according to claim 22, wherein, described message indication: maintain the time domain measurement resource limitation for neighbor cell for following at least one: target basic frequency, source basic frequency or any EUTRAN frequency.
27. methods according to claim 22, wherein, the switching command receiving comprises: by target eNB, arranged for discharging target basic frequency, source basic frequency or the measSubframePatternConfigNeigh information unit (IE) of EUTRA frequency arbitrarily, described method also comprises: described switching command is sent to UE.
28. 1 kinds of eNB, comprising:
One or more processor, is configured for:
Recognize the switching of target eNB;
Identification is for the time domain measurement resource limitation of UE; And
Based on switching or rebuilding, to UE, send message, to maintain the time domain measurement resource limitation for UE.
29. eNB according to claim 28, described processor is also configured for:
From target eNB, receive switching command; And
Utilization is used to indicate the measSubframePatternConfigNeigh information unit (IE) that maintains time domain measurement resource limitation and upgrades switching command, wherein, the message sending comprises that the RRC of the switching command with renewal connects reconfiguration message.
30. eNB according to claim 28, described processor is also configured for:
To target eNB, send the request for the information of marked network type; And
Response based on from target eNB, determines that target eNB provides service by LTE network.
31. eNB according to claim 30, described request is used X2 interface or operational administrative (OAM) system to send.
32. eNB according to claim 28, wherein, described message indication: maintain the time domain measurement resource limitation for neighbor cell for following at least one: target basic frequency, source basic frequency or any EUTRAN frequency.
33. eNB according to claim 28, wherein, the switching command receiving comprises: by target eNB, arranged for discharging target basic frequency, source basic frequency or the measSubframePatternConfigNeigh information unit (IE) of EUTRA frequency arbitrarily, described one or more processor is also configured for: described switching command is sent to UE.
34. 1 kinds of computer programs that are coded on non-instantaneous tangible storage medium, described product comprises computer-readable instruction, described computer-readable instruction makes at least one processor execution comprise following operation:
By source eNB, recognized the switching of target eNB;
Identification is for the time domain measurement resource limitation of UE; And
Based on switching or rebuilding, to UE, send message, to maintain the time domain measurement resource limitation for UE.
35. computer programs according to claim 34, described instruction also comprises:
From target eNB, receive switching command; And
Utilization is used to indicate the measSubframePatternConfigNeigh information unit (IE) that maintains time domain measurement resource limitation and upgrades switching command, wherein, the message sending comprises that the RRC of the switching command with renewal connects reconfiguration message.
36. computer programs according to claim 34, described instruction also comprises:
To target eNB, send the request for the information of marked network type; And
Response based on from target eNB, determines that target eNB provides service by LTE network.
37. computer programs according to claim 36, wherein, described request is used X2 interface or operational administrative (OAM) system to send.
38. computer programs according to claim 34, described message indication: maintain the time domain measurement resource limitation for neighbor cell for following at least one: target basic frequency, source basic frequency or any EUTRAN frequency.
39. computer programs according to claim 34, wherein, the switching command receiving comprises: by target eNB, arranged for discharging target basic frequency, source basic frequency or the measSubframePatternConfigNeigh information unit (IE) of EUTRA frequency arbitrarily, described instruction also comprises: described switching command is sent to UE.
40. 1 kinds of methods, comprising:
By source eNB, recognized the switching of target eNB;
Identification is for the feature of UE configuration; And
To target eNB, send and there is the HandoverPreparationInformation message that is set to the ue-ConfigRelease of Release8 or 9 or does not there is ue-ConfigRelease.
41. according to the method described in claim 40, and wherein, described feature comprises time domain measurement resource limitation.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US2011/047577 WO2013025187A1 (en) | 2011-08-12 | 2011-08-12 | Releasing time domain measurement restrictions |
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| CN103733681A true CN103733681A (en) | 2014-04-16 |
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| CN201180072832.9A Pending CN103733681A (en) | 2011-08-12 | 2011-08-12 | Releasing time domain measurement restrictions |
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| EP (1) | EP2742727A1 (en) |
| KR (1) | KR101590737B1 (en) |
| CN (1) | CN103733681A (en) |
| CA (1) | CA2844819A1 (en) |
| WO (1) | WO2013025187A1 (en) |
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| CN104396297B (en) * | 2013-06-26 | 2019-04-05 | 华为技术有限公司 | Measure control method, measurement method and equipment |
| EP3393197A1 (en) * | 2017-04-18 | 2018-10-24 | HTC Corporation | Device and method for handling measurement gaps |
| CN108738043B (en) * | 2017-04-25 | 2023-05-23 | 中兴通讯股份有限公司 | User equipment switching method, device and system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010178237A (en) * | 2009-02-02 | 2010-08-12 | Sharp Corp | Communication system and base station device, terminal device, and base station device, and program executed by terminal device |
-
2011
- 2011-08-12 CN CN201180072832.9A patent/CN103733681A/en active Pending
- 2011-08-12 KR KR1020147002522A patent/KR101590737B1/en not_active IP Right Cessation
- 2011-08-12 CA CA2844819A patent/CA2844819A1/en not_active Abandoned
- 2011-08-12 EP EP11744178.2A patent/EP2742727A1/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010178237A (en) * | 2009-02-02 | 2010-08-12 | Sharp Corp | Communication system and base station device, terminal device, and base station device, and program executed by terminal device |
Non-Patent Citations (3)
| Title |
|---|
| 3GPP: "3rd Generation Partnership Project;Technical Specification Group Radio Access Network;Evolved Universal Terrestrial Radio Access (E-UTRA);Radio Resource Control (RRC);Protocol specification;(Release 10)", 《3GPP TS 36.331 》 * |
| ALCATEL-LUCENT: "capturing intra-frequency neighbouring cell measurement restriction", 《3GPP TSG-RAN WG2 MEETING #73BIS》 * |
| HUAWEI, HISILICON: "Handling of Resource Restriction Patterns at Handover", 《3GPP TSG-RAN WG2 MEETING #73BIS 》 * |
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| Publication number | Publication date |
|---|---|
| KR20140031991A (en) | 2014-03-13 |
| EP2742727A1 (en) | 2014-06-18 |
| CA2844819A1 (en) | 2013-02-21 |
| KR101590737B1 (en) | 2016-02-01 |
| WO2013025187A1 (en) | 2013-02-21 |
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