CN103052108A - Detection method of interference suffered by idle-state user equipment and user equipment - Google Patents
Detection method of interference suffered by idle-state user equipment and user equipment Download PDFInfo
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Abstract
The invention provides a detection method of interference suffered by idle-state user equipment and the user equipment. The interference detection method of the idle-state user equipment (UE) comprises the following steps that the UE receives judging information for detecting whether the UE is interfered or not; and the UE measures a resident serving cell of the UE and/or an adjacent cell of the serving cell and detects whether the UE is interfered or not according to the judging information and a measured result. According to the interference detection method of the idle-state user equipment and the user equipment disclosed by the invention, the idle-state UE can detect whether the UE is interfered or not and is used for judging whether RRM (Radio Resource Management) measurement is carried out by using a measurement restraining sub-frame set or not, or judging whether a specific physical random access channel is selected to send a random access leader sequence or not, so that the power consumption of the UE is saved and the random access successful rate of the interfered UE is improved.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to detection method and subscriber equipment that a kind of Idle state subscriber equipment is interfered.
Background technology
Heterogeneous network (HetNet, Heterogeneous Network) refers to that low power nodes is placed in the macro base station coverage area by cloth, forms the heterogeneous system with the different node types that cover.Low power nodes (Low Power Node, LPN) comprise microcell base station (Micro), micromicro honeycomb base station (Pico), long distance wireless dateline (Remote Radio Head, RRH), relay station (Relay) and millimicro cellular basestation (Femto is often referred to Home eNodeB) etc.
A subject matter of considering in the heterogeneous network is exactly with each the internodal interference problem under covering, especially because macro base station (Macro) transmitting power is much larger than LPN, cause macro base station to the interference of the descending reception of boundary user among the LPN, and the high-power terminal in macro base station edge is to the interference of LPN near.In addition, be that Home eNodeB also can affect greatly near macro base station user under Closed User Group (Closed Subscriber Group, CSG) the pattern scene at Home eNodeB.Thereby introduce the Inter-Cell Interference Coordination (Enhanced Inter Cell Interference Coordination, eICIC) that strengthens and solve the problems referred to above.
EICIC mainly pays close attention to two scene: Macro-Pico and Macro-femto.The deployment of Pico residential quarter is mainly used in shunting the load of Macro residential quarter.By adopting cell edge expansion (CRE) technology, the base station connects reconfiguration message is used for the measurement event report to UE allocating cell particular offset (cell-specific offset) triggering by radio resource control (RRC), so that connected state UE branches to the LPN node by handoff procedure, to reach higher throughput of system.For Pico residential quarter (particularly cell edge) user, the interference of considering in this scene refers to that Macro disturbs the pico edge customer.
The introducing master of femto is in order to solve indoor covering, the load of shunting indoor user.The Home eNodeB (HeNB) that the main interference problem that exists is the CSG pattern has larger interference, the interference of considering in this scene to refer to that femto disturbs the Macro edge UE that falls into its coverage to the Macro UE in its coverage (not being the Member Users of this femto).
Third generation mobile partnership projects (3GPP) R10 mainly considers based on the eICIC scheme under non-carrier aggregation (non-CA-based) scene, be that control channel and Traffic Channel can be total to transmission, can come by frequency division/time grading mode the control channel of two kinds of nodes of orthogonalization this moment, mainly is divided into following several: time domain mode eICIC (the pseudo-sub-frame of uplink (TDD fake UL subframe) of collocation approximation blank subframe (ABS) subframe/configuration multimedia broadcast multi-broadcasting business (MBSFN) subframe/time division duplex/time domain skew (time shifting)), frequency domain mode eICIC, power control and spatial processing.Wherein, the scheme passed through discussion of 3GPP R10 is collocation approximation blank subframe (ABS) scheme.The residential quarter (Aggressor cell) of produce disturbing only sends the peculiar reference signal in residential quarter (CRS) and in order to guarantee the needed synchronizing signal of backwards compatibility in the ABS subframe, a small amount of broadcast and beep-page message, thus interference to the residential quarter (victim cell) that is interfered avoided.
In the macro-pico scene, Macro cell is aggressor cell, and pico edge (edge) UE is victim UE, so macro cell arranges ABS, macro cell can only dispatch UE in non-ABS, and the R10UE that pico is disturbed by macro in the ABS scheduling.Owing to exist X2 to connect between macro base station (MeNB) and pico base station (PeNB), be PeNB configuration macro ' s ABS by MeNB by load indication (Load indication) message therefore.In the macro-femto scene, femto cell is aggressor cell, and Macro edge UE is victim UE, so femto cell arranges ABS, femtocell can only dispatch UE in non-ABS, and the R10UE that macro is disturbed by femto in the ABS scheduling.Owing to do not exist X2 to connect between MeNB and the HeNB, be MeNB configuration femto ' s ABS by OAM therefore.
Disturbed R10UE under the connected state is owing to only can be received signal by base station scheduling on ABS, therefore can limit R10UE only the part subframe carry out Serving cell RRM (RRM)/Radio Link Management (RLM)/channel condition information (CSI) is measured or the RRM of adjacent area measures, this measures constraint subframe set (measurement restriction pattern) is the subset of ABS, sends to UE by the base station by the proprietary signaling of eating dishes without rice or wine.
Above-mentioned eICIC scheme is only for connected state UE, but do not solve the problem of inter-cell interference of Idle state (IDLE) attitude UE.Under the macro-pico scene, reside in the pico residential quarter and be positioned at the UE of CRE scope of pico owing to be subject to the strong jamming of macro, the Reference Signal Received Quality (RSRQ) that may measure Serving cell in the process of cell reselection does not satisfy the residential quarter and selects the S criterion, and can not continue to reside in pico.Under the macro-femto scene, reside in the macro residential quarter and be positioned near the UE of femto owing to be subject to the strong jamming of femto, the RSRQ that may measure Serving cell in the process of cell reselection does not satisfy the residential quarter and selects the S criterion, and can not continue to reside in macro, but because the femto residential quarter is the CSG residential quarter that UE can not access, may cause UE can not find can be resident the residential quarter.The IDLE attitude UE that resides in victim cell only carries out RRM to Serving cell and measures and can address the above problem (the measurement constraint subframe set that IDLE UE obtains in the time of can preserving connected state is used with in the IDLE attitude time, also can obtain this measurements by system message and retrain subframe and gather) in measuring the set of constraint subframe.
But, if reside in victim cell but be not subject to the UE that aggressor cell disturbs and only in measuring the set of constraint subframe, Serving cell is carried out the RRM measurement, then will cause within a predetermined period of time measurable number of sub frames minimizing of this UE, UE then needs additionally to increase wake-up time (wake time) and measures, and then increases the power consumption of terminal equipment.Therefore, whether IDLE UE need to detect self and be disturbed by aggressor cell, to judge whether that using the set of measurement constraint subframe to carry out RRM measures constraint.
In addition, IDLE UE initiating random access procedure, sending accidental access response (RAR) by the base station at ABS can be so that successfully received by the RAR of the victim UE that aggressor cell disturbs, and then improves victim UE and access at random success rate.But the base station does not also know whether the IDLEUE that initiates to access at random is the victim UE that is interfered, if the RAR of all UE sends at ABS, then can cause at random access delay and the RAR capacity problem of non-victim UE.Therefore, the base station needs to identify whether the UE that initiates at random access is the victim UE that disturbed by aggressor cell.The victim UE that disturbed by aggressor cell can pass through to send random access leader sequence (preamble) at specific Physical Random Access Channel (PRACH), or chooses specific preamble take indication base station oneself as victim UE.Therefore, whether IDLE UE need to detect self and be disturbed by aggressor cell, to judge whether that choosing specific Physical Random Access Channel sends random access leader sequence.
Summary of the invention
The invention provides detection method and subscriber equipment that a kind of Idle state subscriber equipment is interfered, detect the problem that self whether is interfered to solve Idle state UE.
The detection method that the embodiment of the invention provides a kind of Idle state subscriber equipment to be interfered, the method comprises:
UE obtains to detect the determination information whether described UE is interfered;
Whether described UE measures the resident Serving cell of described UE and/or the neighbor cell of described Serving cell, detect according to described determination information and measurement result oneself to be interfered.
Whether preferably, described UE measures the resident Serving cell of described UE and/or the neighbor cell of described Serving cell, detect according to described determination information and measurement result oneself to be interfered, and comprising:
Described UE detects and exists neighbor cell to satisfy residential quarter discovery condition, and then described UE determines that oneself is interfered; Otherwise described UE determines that oneself is not interfered;
Described UE detects and exists neighbor cell to satisfy residential quarter selection S criterion, and then described UE determines that oneself is interfered; Otherwise described UE determines that oneself is not interfered;
When macro base station (Macro)-Home eNodeB (Femto) scene, the UE that resides in macro base station is measuring described Serving cell and described neighbor cell in the subframe arbitrarily, all residential quarters that measure are carried out the ordering of cell reselection, the highest residential quarter is the residential quarter of the closed mode of Femto (CSG cell) if sort, and the closed user group of the residential quarter of described closed mode sign is not in the white tabulation of UE, and then described UE determines that oneself is interfered; Otherwise described UE determines that oneself is not interfered; Perhaps
When Macro-micromicro honeycomb base station (Pico) scene, the UE that resides in pico measures the Reference Signal Received Power (RSRP) of Serving cell in measuring the set of constraint subframe, and when using the R value (Rs) of the first parameter value calculation Serving cell, described Serving cell is the highest residential quarter of sorting; But when measuring the RSRP of Serving cell and using the second parameter value calculation Rs value in any subframe, Serving cell is not the highest residential quarter of sorting, and then described UE determines that oneself is interfered; Otherwise described UE determines that oneself is not interfered; Wherein, described the first parameter value is for adopting the sluggish parameter (Q of cell reselection corresponding to IDLE attitude CRE mechanism
Hyst) value, described the second parameter value is not for adopting Q corresponding to IDLE attitude CRE mechanism
HystValue.
Preferably, described UE is measuring in the process of described Serving cell and described neighbor cell in the subframe arbitrarily,
To indicate this neighbor cell be the CSG residential quarter if described UE detects the Physical Cell Identifier (PCI) of neighbor cell, but this CSG residential quarter is in the history access recorded information of UE, and described UE continues this neighbor cell is measured.
Preferably, described the first parameter value and described the second parameter value are broadcast to described UE by the system message of pico.
Preferably, after described UE determined oneself to be interfered, described method also comprised:
Described UE uses the set of measurement constraint subframe to carry out RRM and measures, and perhaps chooses at random Physical Random Access Channel in specific Physical Random Access Channel is gathered and sends random access leader sequence; Perhaps
After described UE determined oneself not to be interfered, described method also comprised:
Described UE stops using the set of measurement constraint subframe to carry out RRM and measures, and perhaps chooses at random Physical Random Access Channel and sends random access leader sequence.
Preferably, the Physical Random Access Channel that can use of the UE that is interfered that broadcasts in system message for described base station of described specific Physical Random Access Channel set is gathered.
The embodiment of the invention also provides a kind of subscriber equipment (UE), and this UE comprises:
Obtain module, be used for obtaining to detect the determination information whether described UE is interfered;
Measure detection module, be used for the resident Serving cell of described UE and/or the neighbor cell of described Serving cell are measured, detect according to described determination information and measurement result and oneself whether be interfered.
Whether preferably, described measurement detection module is measured the resident Serving cell of described UE and/or the neighbor cell of described Serving cell, detect according to described determination information and measurement result oneself to be interfered, be for:
Detect and exist neighbor cell to satisfy the residential quarter to find condition, determine that then described UE is interfered; Otherwise, determine that described UE is not interfered;
Detect and exist neighbor cell to satisfy the residential quarter to select the S criterion, determine that then described UE is interfered; Otherwise, determine that described UE is not interfered;
When macro base station (Macro)-Home eNodeB (Femto) scene, the UE that resides in macro base station is measuring described Serving cell and described neighbor cell in the subframe arbitrarily, all residential quarters that measure are carried out the ordering of cell reselection, the highest residential quarter is the residential quarter of the closed mode of Femto (CSG cell) if sort, and the closed user group of the residential quarter of described closed mode sign determines that then described UE is interfered not in the white tabulation of UE; Otherwise, determine that described UE is not interfered; Perhaps
When Macro-micromicro honeycomb base station (Pico) scene, the UE that resides in pico measures the Reference Signal Received Power (RSRP) of Serving cell in measuring the set of constraint subframe, and when using the R value (Rs) of the first parameter value calculation Serving cell, described Serving cell is the highest residential quarter of sorting; But when measuring the RSRP of Serving cell and using the second parameter value calculation Rs value in any subframe, Serving cell is not the highest residential quarter of sorting, and determines that then described UE is interfered; Otherwise, determine that described UE is not interfered; Wherein, described the first parameter value is for adopting the sluggish parameter (Q of cell reselection corresponding to IDLE attitude CRE mechanism
Hyst) value, described the second parameter value is not for adopting Q corresponding to IDLE attitude CRE mechanism
HystValue.
Preferably, described the first parameter value and described the second parameter value are broadcast to described UE by the system message of pico.
Preferably, described UE also comprises:
Access module is used for choosing at random Physical Random Access Channel and to send random access leader sequence in specific Physical Random Access Channel set after described measurement detection module determines that described UE is interfered; After perhaps described measurement detection module determines that described UE is not interfered, choose at random Physical Random Access Channel and send random access leader sequence;
Described measurement detection module, after also determining that for described measurement detection module described UE is interfered, use the set of measurement constraint subframe to measure, after perhaps described measurement detection module determines that described UE is not interfered, stop using measurement constraint subframe to gather and measure.
The interference detection method of above-mentioned Idle state subscriber equipment and subscriber equipment, so that can detecting oneself, Idle state UE whether is interfered, in order to judge whether that adopting the set of measurement constraint subframe to carry out RRM measures, or judge whether to choose specific Physical Random Access Channel and send random access leader sequence, save the UE power consumption, and raising is disturbed the success rate that UE accesses at random.
Description of drawings
Fig. 1 is hetnet typical deployed scene schematic diagram of the present invention;
Fig. 2 is macro-pico scene schematic diagram of the present invention;
Fig. 3 is macro-femto scene schematic diagram of the present invention;
Fig. 4 is the flow chart of the detection method embodiment that is interfered of Idle state UE of the present invention;
Fig. 5 is the structural representation of terminal embodiment of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, hereinafter in connection with accompanying drawing embodiments of the invention are elaborated.Need to prove that in the situation of not conflicting, the embodiment among the application and the feature among the embodiment be combination in any mutually.
Fig. 1 has described hetnet typical deployed scene, and small-power node (LPN) is deployed in the coverage of macro base station (macro eNB), and wherein LPN has following a few class: via node (relay node), pico, femto.Wherein can pass through the mutual signaling of X2 interface between macro and the pico eNB.
As shown in Figure 2, be macro-pico scene schematic diagram of the present invention, wherein, pico is deployed in the macro cell coverage area and covers as focus, to share the macro load.Wherein, the PUE1 that resides in pico is positioned at the RE scope of pico, is subject to the strong jamming of macro; The PUE2 that resides in pico is positioned at the central area of pico, is not subject to the interference of macro.
As shown in Figure 3, be macro-femto scene schematic diagram of the present invention, femto is deployed in the macro cell coverage area.The MUE1 that wherein resides in macro be positioned at femto near, be subject to the strong jamming of femto; The MUE2 that resides in macro is positioned at the central area of macro, is not subject to the interference of femto.
As shown in Figure 4, the flow chart of the detection method embodiment that is interfered for Idle state UE of the present invention, the method comprises:
This determination information comprises residential quarter discovery (cell detection) condition, residential quarter selection S criterion and cell reselection R criterion etc.; Preparation method is prior art, no longer describes in detail herein;
If according to cell detection condition judgment, if then UE detects and exists neighbor cell to satisfy the celldetection condition, namely UE thinks the interference that oneself has been subject to aggressor cell; Otherwise UE thinks that oneself is not subject to the interference of aggressor cell;
If select the S criterion to judge according to the residential quarter, if then UE detects and exists neighbor cell to satisfy the residential quarter to select the S criterion, UE namely thinks the interference that oneself has been subject to aggressor cell; Otherwise UE thinks that oneself is not subject to the interference of aggressor cell;
If judge according to cell reselection R criterion, then under the macro-femto scene, the UE that resides in macro base station does not use and measures the set constraint measurement of constraint subframe and measuring described Serving cell and described neighbor cell in the subframe arbitrarily, all residential quarters that measure are carried out the ordering of cell reselection, the highest (highest ranked) residential quarter is CSG cell if sort, and described UE can not access this CSG cell (being that the closed user group sign of residential quarter of described closed mode is not in the white tabulation of UE), and then UE thinks the interference that oneself has been subject to aggressor cell; Otherwise UE thinks that oneself is not subject to the interference of aggressor cell;
If judge according to cell reselection R criterion, then under the macro-pico scene, pico broadcasts the first parameter value and (adopts the Q of IDLE attitude CRE mechanism in system message
HystValue) and the second parameter value (do not adopt the Q of IDLE attitude CRE mechanism
HystValue); If when the UE that resides in pico measured the RSRP of Serving cell and uses the R value (Rs) of the first parameter value calculation Serving cell in measuring the set of constraint subframe, Serving cell was highest ranked residential quarter; Measure when in any subframe, measuring the RSRP of Serving cell and using the second parameter value calculation Rs value in the set of constraint subframe but be not limited in, Serving cell is not highest ranked residential quarter, and then UE thinks the interference that oneself has been subject to aggressor cell; Otherwise UE thinks that oneself is not subject to the interference of aggressor cell;
It should be noted that, if UE detects the PCI of neighbor cell and indicates that it is the CSG residential quarter, but in historical record (footprint) information of UE, UE need not continue this neighbor cell is measured, and whether is subject to the interference of aggressor cell to judge oneself in this CSG residential quarter.
This step is optional step; If UE thinks the interference that oneself has been subject to aggressor cell, then UE begins to enable and measures the set of constraint subframe and carry out RRM and measure constraint; Otherwise the UE continuation does not retrain the RRM measurement or stops using the set of measurement constraint subframe to carry out the RRM measurement and retrains.Wherein, the measurement constraint subframe set that UE obtains in the time of can preserving connected state, and use it for the IDLE attitude, perhaps obtain to measure the set of constraint subframe by the system message that receives Serving cell or neighbor cell.
If think the interference that oneself has been subject to aggressor cell according to above-mentioned comparative result UE, then in specific Physical Random Access Channel set, choose at random Physical Random Access Channel and send random access leader sequence, it can be identified in the base station is the victim UE that is interfered, then send the accidental access response (RAR) of this UE at ABS, to guarantee the successful reception of RAR.The existing result that UE can judge according to the last time, or judge whether to be interfered before the access at random at every turn.The base station may be broadcasted in system message and is subject to the Physical Random Access Channel set that UE that aggressor cell disturbs can use, and also is specific Physical Random Access Channel set.
Embodiment one
Present embodiment is described is under the macro-pico scene shown in Figure 2, adopts the situation of the decision method of cell detection condition.
In order to search for co-frequency cell, UE carries out Cell searching in the same frequency band of Serving cell, obtains the RSRP of new residential quarter by measuring CRS and SCH, CRS Signal to Interference plus Noise Ratio (RSRP
), synchronizing signal subcarrier mean receiving power (SCH_RP) and synchronizing signal Signal to Interference plus Noise Ratio (SCH
), and judge whether this new residential quarter satisfies cell detection condition in the table 1.Adopt under the decision method of cell detection condition, exist neighbor cell to satisfy cell detection condition if UE detects, judge that then oneself is the victim UE that disturbed by aggressor cell.
Table 1 couple same frequently E-UTRAN carries out the residential quarter condition that cell reselection is measured
The PUE1 that is positioned at the RE zone of pico is subject to the strong jamming of macro, detects macro and satisfies cell detection condition, judges that then oneself is victim UE, and beginning or continue to use measure the set of constraint subframe and carry out RRM and measure constraint; If the PUE1 initiating random access procedure can or re-start according to the measurement result of last time to measure and judge that it is victim UE, then in specific Physical Random Access Channel, choosing Physical Random Access Channel and sending preamble.
The PUE2 that is positioned at the pico central area is not subject to the interference of macro, do not satisfy cell detection condition if detect new residential quarter, then judge it oneself is not victim UE, and continue not retrain RRM and measure or stop using and measure the set of constraint subframe and carry out RRM and measure constraint.If the PUE2 initiating random access procedure can or re-start according to the measurement result of last time to measure and judge that it is non-victimUE, then choose at random Physical Random Access Channel and send preamble.
Embodiment two
What present embodiment was described is under the macro-pico scene shown in Figure 2, adopts the residential quarter to select the situation of the decision method of S criterion.
In order to search for co-frequency cell, UE carries out Cell searching in the same frequency band of Serving cell, obtains the RSRP of new residential quarter by measuring CRS and SCH, RSRP
SCH RP_and SCH
And judge whether this new residential quarter satisfies cell detection condition in the table 1.Only have when this new residential quarter and satisfy the celldetection condition, UE just carries out the measurement of cell reselection to it.Then UE need to measure RSRP and the RSRQ of new discovery residential quarter, judges whether to satisfy the residential quarter and selects the S criterion, only has when the new discovery residential quarter and satisfies residential quarter selection S criterion, and UE just classifies this residential quarter as the cell reselection candidate cell and sorts.Adopt the residential quarter to select the decision method of S criterion condition as follows, exist the residential quarter to satisfy the S criterion if UE detects, judge that then oneself is the victim UE that disturbed by aggressor cell.
Particularly, the residential quarter selects the S criterion to be: Srxlev＞0 and Squal＞0, wherein,
Srxlev＝Q
rxlevmeas-(Q
rxlevmin+Q
rxlevminoffset)-Pcompensation (1)
Squal＝Q
qualmeas-(Q
qualmin+Q
qualminoffset) (2)
Wherein, the implication of each parameter is as shown in table 2 in the following formula:
The corresponding table of table 2 meaning of parameters
The PUE1 that is positioned at the RE zone of pico is subject to the strong jamming of macro, detects macro and satisfies the residential quarter and select the S criterion, judges that then oneself be victim UE, and beginning or continue to use and measure the constraint subframe and gather and carry out the RRM measurement and retrain; If the PUE1 initiating random access procedure can or re-start according to the measurement result of last time to measure and judge that it is victim UE, then in specific Physical Random Access Channel, choosing Physical Random Access Channel and sending preamble.
The PUE2 that is positioned at the pico central area is not subject to the interference of macro, do not satisfy residential quarter selection S criterion if detect the residential quarter, then judge it oneself is not victim UE, and continue not retrain RRM and measure or stop using and measure the set of constraint subframe and carry out RRM and measure constraint.If the PUE2 initiating random access procedure can or re-start according to the measurement result of last time to measure and judge that it is non-victim UE, then choose at random Physical Random Access Channel and send preamble.
Embodiment three
What present embodiment was described is under the macro-pico scene shown in Figure 2, adopts the situation of the decision method of cell reselection R criterion.
The PUE1 that is positioned at the RE zone of pico is subject to the strong jamming of macro, and it measures the RSRP of Serving cell in measuring the set of constraint subframe, and uses and adopt Q corresponding to IDLE attitude CRE mechanism
HystValue (Q
HystCRE) when calculating Rs value, Serving cell is highest ranked residential quarter, but measuring the RSRP of Serving cell and using the Qhyst value (Q that does not adopt IDLE attitude CRE mechanism correspondence in the subframe arbitrarily
Hystnon-CRE) when calculating Rs value, Serving cell is not highest ranked residential quarter, judges that then oneself be victim UE, and beginning or continue to use to measure and retrain subframe and gather and carry out the RRM measurement and retrain; If the PUE1 initiating random access procedure can or re-start according to the measurement result of last time to measure and judge that it is victim UE, then in specific Physical Random Access Channel, choosing Physical Random Access Channel and sending preamble.
The PUE2 that is positioned at the pico central area is not subject to the interference of macro, and it measures the RSRP of Serving cell and use Q in measuring the set of constraint subframe
HystCREWhen calculating the Rs value, Serving cell is highest ranked residential quarter, and is measuring the RSRP of Serving cell and using Q in the subframe arbitrarily
Hystnon-CREWhen calculating Rs value, Serving cell also is highest ranked residential quarter, then judges it oneself is not victim UE, and continues not retrain RRM and measure or stop using and measure the set of constraint subframe and carry out RRM and measure and retrain.If the PUE2 initiating random access procedure can or re-start according to the measurement result of last time to measure and judge that it is non-victim UE, then choose at random Physical Random Access Channel and send preamble.
Embodiment four
What present embodiment was described is under the macro-femto scene shown in Figure 3, adopts the situation of the decision method of cell reselection R criterion.
Be positioned at the strong jamming that near the MUE1 of femto is subject to femto, it does not use measures the measurement of constraint subframe set constraint, namely measures RSRP and the RSRQ of Serving cell and neighbor cell in any subframe.Do not measure the measurement of constraint subframe set constraint owing to do not use, the RSRQ of the Serving cell macro that measures does not satisfy the residential quarter and selects the S criterion, then its highest ranked residential quarter is the CSGcell of femto, but this CSG cell is not allowed CSG cell, judge that then oneself is victim UE, and beginning or continue to use measure the set of constraint subframe and carry out RRM and measure constraint; If the MUE1 initiating random access procedure can or re-start according to the measurement result of last time to measure and judge that it is victim UE, then in specific Physical Random Access Channel, choosing Physical Random Access Channel and sending preamble.
Be positioned at the macro central area is not subject to femto away from the MUE2 of femto interference, it does not use measures the measurement of constraint subframe set constraint, namely measure RSRP and the RSRQ of Serving cell and neighbor cell in any subframe, according to cell reselection R criterion, highest ranked residential quarter is the macro residential quarter, then judge it oneself is not victim UE, and continue not retrain RRM and measure or stop using and measure the set of constraint subframe and carry out RRM and measure constraint.If the MUE2 initiating random access procedure can or re-start according to the measurement result of last time to measure and judge that it is non-victim UE, then choose at random Physical Random Access Channel and send preamble.
In sum, if described UE thinks that oneself is interfered, and opened to use and measured the measurement of constraint subframe set constraint, then proceeded this constraint and measure.If described UE thinks that oneself is not interfered, and not yet open this constraint and measure, then open this constraint and measure.If UE thinks that oneself is not interfered, and opened and used this constraint to measure, then stopped using this constraint to measure.If described UE thinks that oneself is not interfered, and not yet open this constraint and measure, then continue not use this constraint to measure.
The detection method that above-mentioned Idle state subscriber equipment is interfered, so that IDLE attitude UE can detect the interference that oneself whether is subject to aggressor cell, in order to judge whether that adopting the set of measurement constraint subframe to carry out RRM measures, or judge whether to choose specific Physical Random Access Channel and send random access leader sequence, save the UE power consumption, and the RRM that solves IDLE attitude UE measures and is disturbed the problem of inter-cell interference in the UE random access procedure, improves to be disturbed the success rate that UE accesses at random.
As shown in Figure 5, be the structural representation of terminal embodiment of the present invention, this UE comprises acquisition module 51 and measurement detection module 52, wherein:
Obtain module, be used for obtaining to detect the determination information whether described UE is interfered;
Measure detection module, be used for the resident Serving cell of described UE and/or the neighbor cell of described Serving cell are measured, detect according to described determination information and measurement result and oneself whether be interfered.
Whether wherein, described measurement detection module is measured the resident Serving cell of described UE and/or the neighbor cell of described Serving cell, detect according to described determination information and measurement result oneself to be interfered, be for:
Detect and exist neighbor cell to satisfy the residential quarter to find condition, determine that then described UE is interfered; Otherwise, determine that described UE is not interfered;
Detect and exist neighbor cell to satisfy the residential quarter to select the S criterion, determine that then described UE is interfered; Otherwise, determine that described UE is not interfered;
When macro base station (Macro)-Home eNodeB (Femto) scene, do not use measurement constraint subframe set constraint to measure described Serving cell and described neighbor cell, all residential quarters that measure are carried out the ordering of cell reselection, the highest residential quarter is the residential quarter of the closed mode of Femto (CSG cell) if sort, and the closed user group of the residential quarter of described closed mode sign determines that then described UE is interfered not in the white tabulation of UE; Otherwise, determine that described UE is not interfered; Perhaps
When Macro-micromicro honeycomb base station (Pico) scene, the UE that resides in pico measures the Reference Signal Received Power (RSRP) of Serving cell in measuring the set of constraint subframe, and when using the R value (Rs) of the first parameter value calculation Serving cell, described Serving cell is the highest residential quarter of sorting; But when measuring the RSRP of Serving cell and using the second parameter value calculation Rs value in any subframe, Serving cell is not the highest residential quarter of sorting, and determines that then described UE is interfered; Otherwise, determine that described UE is not interfered; Wherein, described the first parameter value is for adopting the sluggish parameter (Q of cell reselection corresponding to IDLE attitude CRE mechanism
Hyst) value, described the second parameter value is not for adopting Q corresponding to IDLE attitude CRE mechanism
HystValue.
This UE can detect the interference whether oneself is subject to aggressor cell, and concrete methods of realizing can referring to Fig. 4 and above-mentioned four embodiment, repeat no more herein.
In addition, described UE also comprises: access module is used for choosing at random Physical Random Access Channel and to send random access leader sequence in specific Physical Random Access Channel set after described measurement detection module determines that described UE is interfered; After perhaps described measurement detection module determines that described UE is not interfered, choose at random Physical Random Access Channel and send random access leader sequence; Described measurement detection module, after also determining that for described measurement detection module described UE is interfered, use the set of measurement constraint subframe to measure, after perhaps described measurement detection module determines that described UE is not interfered, stop using measurement constraint subframe to gather and measure.
In sum, if described UE thinks that oneself is interfered, and opened to use and measured the measurement of constraint subframe set constraint, then proceeded this constraint and measure.If described UE thinks that oneself is not interfered, and not yet open this constraint and measure, then open this constraint and measure.If UE thinks that oneself is not interfered, and opened and used this constraint to measure, then stopped using this constraint to measure.If described UE thinks that oneself is not interfered, and not yet open this constraint and measure, then continue not use this constraint to measure.
Above-mentioned subscriber equipment, can detect oneself and whether be subject to the interference of aggressor cell, then judging whether to adopt the set of measurement constraint subframe to carry out RRM measures, or judge whether to choose specific Physical Random Access Channel and send random access leader sequence, reduce the UE power consumption, improve and access at random success rate.
One of ordinary skill in the art will appreciate that all or part of step in the said method can come the instruction related hardware to finish by program, said procedure can be stored in the computer-readable recording medium, such as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can realize with one or more integrated circuits.Correspondingly, each the module/unit in above-described embodiment can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Above embodiment is only unrestricted in order to technical scheme of the present invention to be described, only with reference to preferred embodiment the present invention is had been described in detail.Those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention, and do not break away from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of the claim scope of the present invention.
Claims (10)
1. the interference detection method of an Idle state subscriber equipment (UE), the method comprises:
UE obtains to detect the determination information whether described UE is interfered;
Whether described UE measures the resident Serving cell of described UE and/or the neighbor cell of described Serving cell, detect according to described determination information and measurement result oneself to be interfered.
2. method according to claim 1 is characterized in that:
Whether described UE measures the resident Serving cell of described UE and/or the neighbor cell of described Serving cell, detect according to described determination information and measurement result oneself to be interfered, and comprising:
Described UE detects and exists neighbor cell to satisfy residential quarter discovery condition, and then described UE determines that oneself is interfered; Otherwise described UE determines that oneself is not interfered;
Described UE detects and exists neighbor cell to satisfy residential quarter selection S criterion, and then described UE determines that oneself is interfered; Otherwise described UE determines that oneself is not interfered;
When macro base station (Macro)-Home eNodeB (Femto) scene, the UE that resides in macro base station is measuring described Serving cell and described neighbor cell in the subframe arbitrarily, all residential quarters that measure are carried out the ordering of cell reselection, the highest residential quarter is the residential quarter of the closed mode of Femto (CSG cell) if sort, and the closed user group of the residential quarter of described closed mode sign is not in the white tabulation of UE, and then described UE determines that oneself is interfered; Otherwise described UE determines that oneself is not interfered; Perhaps
When Macro-micromicro honeycomb base station (Pico) scene, the UE that resides in pico measures the Reference Signal Received Power (RSRP) of Serving cell in measuring the set of constraint subframe, and when using the R value (Rs) of the first parameter value calculation Serving cell, described Serving cell is the highest residential quarter of sorting; But when measuring the RSRP of Serving cell and using the second parameter value calculation Rs value in any subframe, Serving cell is not the highest residential quarter of sorting, and then described UE determines that oneself is interfered; Otherwise described UE determines that oneself is not interfered; Wherein, described the first parameter value is for adopting the sluggish parameter (Q of cell reselection corresponding to IDLE attitude CRE mechanism
Hyst) value, described the second parameter value is not for adopting Q corresponding to IDLE attitude CRE mechanism
HystValue.
3. method according to claim 2 is characterized in that:
Described UE is measuring in the process of described Serving cell and described neighbor cell in the subframe arbitrarily,
To indicate this neighbor cell be the CSG residential quarter if described UE detects the Physical Cell Identifier (PCI) of neighbor cell, but this CSG residential quarter is in the history access recorded information of UE, and described UE continues this neighbor cell is measured.
4. method according to claim 2 is characterized in that:
Described the first parameter value and described the second parameter value are broadcast to described UE by the system message of pico.
5. the described method of arbitrary claim according to claim 2-4 is characterized in that:
After described UE determined oneself to be interfered, described method also comprised:
Described UE uses the set of measurement constraint subframe to carry out RRM and measures, and perhaps chooses at random Physical Random Access Channel in specific Physical Random Access Channel is gathered and sends random access leader sequence; Perhaps
After described UE determined oneself not to be interfered, described method also comprised:
Described UE stops using the set of measurement constraint subframe to carry out RRM and measures, and perhaps chooses at random Physical Random Access Channel and sends random access leader sequence.
6. method according to claim 5 is characterized in that:
The Physical Random Access Channel set that the UE that is interfered that described specific Physical Random Access Channel set is broadcasted in system message for described base station can use.
7. a subscriber equipment (UE), this UE comprises:
Obtain module, be used for obtaining to detect the determination information whether described UE is interfered;
Measure detection module, be used for the resident Serving cell of described UE and/or the neighbor cell of described Serving cell are measured, detect according to described determination information and measurement result and oneself whether be interfered.
8. UE according to claim 7 is characterized in that:
Whether described measurement detection module is measured the resident Serving cell of described UE and/or the neighbor cell of described Serving cell, detect according to described determination information and measurement result oneself to be interfered, be for:
Detect and exist neighbor cell to satisfy the residential quarter to find condition, determine that then described UE is interfered; Otherwise, determine that described UE is not interfered;
Detect and exist neighbor cell to satisfy the residential quarter to select the S criterion, determine that then described UE is interfered; Otherwise, determine that described UE is not interfered;
When macro base station (Macro)-Home eNodeB (Femto) scene, the UE that resides in macro base station is measuring described Serving cell and described neighbor cell in the subframe arbitrarily, all residential quarters that measure are carried out the ordering of cell reselection, the highest residential quarter is the residential quarter of the closed mode of Femto (CSG cell) if sort, and the closed user group of the residential quarter of described closed mode sign determines that then described UE is interfered not in the white tabulation of UE; Otherwise, determine that described UE is not interfered; Perhaps
When Macro-micromicro honeycomb base station (Pico) scene, the UE that resides in pico measures the Reference Signal Received Power (RSRP) of Serving cell in measuring the set of constraint subframe, and when using the R value (Rs) of the first parameter value calculation Serving cell, described Serving cell is the highest residential quarter of sorting; But when measuring the RSRP of Serving cell and using the second parameter value calculation Rs value in any subframe, Serving cell is not the highest residential quarter of sorting, and determines that then described UE is interfered; Otherwise, determine that described UE is not interfered; Wherein, described the first parameter value is for adopting the sluggish parameter (Q of cell reselection corresponding to IDLE attitude CRE mechanism
Hyst) value, described the second parameter value is not for adopting Q corresponding to IDLE attitude CRE mechanism
HystValue.
9. UE according to claim 8 is characterized in that:
Described the first parameter value and described the second parameter value are broadcast to described UE by the system message of pico.
10. UE according to claim 9 is characterized in that, described UE also comprises:
Access module is used for choosing at random Physical Random Access Channel and to send random access leader sequence in specific Physical Random Access Channel set after described measurement detection module determines that described UE is interfered; After perhaps described measurement detection module determines that described UE is not interfered, choose at random Physical Random Access Channel and send random access leader sequence;
Described measurement detection module, after also determining that for described measurement detection module described UE is interfered, use the set of measurement constraint subframe to measure, after perhaps described measurement detection module determines that described UE is not interfered, stop using measurement constraint subframe to gather and measure.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105142193A (en) * | 2015-07-24 | 2015-12-09 | 大唐移动通信设备有限公司 | Method and device for cell reselection and method and device for cell reselection control |
| WO2021235984A1 (en) * | 2020-05-18 | 2021-11-25 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods of sending ue screaming signal in private networks with local licensed spectrum |
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| US5812936A (en) * | 1995-09-19 | 1998-09-22 | Lucent Technologies, Inc. | Energy-efficient time-division radio that reduces the induction of baseband interference |
| CN101873612B (en) * | 2009-04-23 | 2013-12-04 | 中兴通讯股份有限公司 | Method and system measuring Home NB cell |
| CN101605351B (en) * | 2009-06-25 | 2011-12-07 | 北京天碁科技有限公司 | Cell reselection processing method for mobile terminal and mobile terminal |
| CN102196474B (en) * | 2010-03-05 | 2016-05-25 | 中兴通讯股份有限公司 | Detect the method and system that disturb subscriber equipment closed signed user group cell |
| CN102196415B (en) * | 2011-05-10 | 2014-01-08 | 新邮通信设备有限公司 | Method and equipment for triggering interference coordination of terminal in idle mode |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105142193A (en) * | 2015-07-24 | 2015-12-09 | 大唐移动通信设备有限公司 | Method and device for cell reselection and method and device for cell reselection control |
| WO2021235984A1 (en) * | 2020-05-18 | 2021-11-25 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods of sending ue screaming signal in private networks with local licensed spectrum |
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