CN102761897B - Method and system for realizing automatic neighbor cell relation measurement - Google Patents
Method and system for realizing automatic neighbor cell relation measurement Download PDFInfo
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Abstract
The invention discloses a method and a system for realizing automatic neighbor cell relation. The method comprises the following steps that: a network side sends an ANR (application not responding) measurement configuration parameter including associated control parameters scheduled aiming at different types of ANR measurements to UE (user equipment) before the execution of the ANR measurement; and when executing the ANR (application not responding) measurement, the UE measures the unknown neighbor cells of different types according to the received associated control parameters scheduled aiming at different types of ANR measurement. According to the invention, the UE measures the unknown neighbor cells of different types according to the ratio of the received ANR measurement configuration parameter for scheduling associated controlled aiming at different types of ANR measurement; and the UE does not execute purely according to the best effort but executes the ANR measurement log in a more target form under a certain network expect, so that the property of the ANR measurement log is enhanced and the qualified ANR measurement is executed.
Description
Technical Field
The present invention relates to an Automatic Neighbor Relation Function (ANRF) technology, and in particular, to a method and a system for implementing ANR measurement.
Background
With the increase of the number of subscribers of cellular mobile communication system operators and the improvement of service demands of subscribers, the scale of cellular networks is continuously enlarged, the number of base stations is continuously increased, and the cellular mobile communication systems of various standards are continuously deepened to cooperate with each other. Concomitantly, the management and maintenance of the neighbour relations of cells in cellular networks is becoming an increasingly cumbersome task, and it is expected that in the past purely manual neighbour relation management can be automated by the system. Unfortunately, UTRA network operators are very demanding to implement automatic management of the neighbor relations of their network cells.
Fig. 1 is a schematic diagram of a system architecture of an existing UTRA, and as shown in fig. 1, in the UTRA Network, a Universal Terrestrial Radio Access Network (UTRAN) includes two basic Network elements, namely a Radio Network Controller (RNC) and a base station (NodeB). The neighboring cell relations among a plurality of cells under hundreds of nodebs can dynamically change with the requirements of network planning optimization and the change of the wireless environment.
In the UTRA network, the correct neighbor relation between cells is very important to the network performance. For example, the method realizes the optimal switching of mobile users and user terminals (UE), ensures the service continuity of the mobile users and helps the network to realize multiple purposes of load balancing, capacity allocation, energy conservation and the like. Under the pure manual neighbor cell arrangement, the network side informs the neighbor cell relation configured in advance to the UE through a system broadcast message or a proprietary control message, and the UE further stores and utilizes the received cell neighbor cell relation. However, the neighbor cell relationship configured in advance from the network side may be outdated and may not truly reflect the real-time neighbor cell relationship, thereby possibly causing an erroneous handover of the UE, even a call drop, and reducing the network performance.
In UTRA systems, 3GPP Release10 (Release10) introduced an Automatic Neighbor Relation Function (ANRF) based on best effort to complete (BestEffort to do). The scheme is a Log Automatic Neighbor Relation (ANR) scheme for short by using a Minimization of Drive Test (MDT) technology, and a specific flow is shown in fig. 2, and includes the following steps:
step 200: the UE resides in a Source cell (Source cell) or a Serving cell (Serving cell) under the Source RNC. The source RNC selects a suitable UE in the source cell to perform a certain type or types of ANR measurement tasks.
Here, ANR measurement task types are classified into basic 4 types: UTRA ANR Intra-frequency measurements (Intra-frequency ANRlogging), UTRA ANR out-of-frequency measurements (Intra-frequency ANRlogging), cross-LTE ANR measurements (Inter-RAT LTE ANR logging), and cross-GSM ANR measurements (Inter-RAT GSM ANR logging).
Step 201: the source RNC sends an RRC downlink Message (DL Message with ANR Configuration) carrying an ANR Measurement control Configuration parameter, such as a UTRA ANR Measurement Configuration (registered Measurement Configuration) Message, to the previously selected ANRF task execution UE in the source cell.
Wherein the ANRF configuration parameters include: an ANR measurement time limit parameter (ANR registration duration), an ANR measurement range limit parameter (ANR registration detection range), and cell signal evaluation parameters (ANR registration absolute threshold, ANR registration relative threshold) related to the 4 basic ANR measurement types of Intra-frequency anrlregistering, Inter-frequency anregistering, Inter-RAT LTE ANR registering, and Inter-RAT GSMANR registering. The UE saves the received ANRF configuration parameters for use after entering an ANR measurement appropriate state.
Step 202: after a certain Radio Resource Control (RRC) signaling interaction, the UE enters a state suitable for performing ANR measurement, and prepares for measurement of a certain type or several types of unknown neighboring detection cells using the previously stored ANRF configuration parameters.
In the current protocol specification, the state suitable for performing ANR measurements may be Idle mode (Idle mode), registration area level paging state (URA _ PCH), Cell level paging state (Cell _ PCH).
Step 203: due to possible mobility of the UE or other reasons, on one hand, the UE performs a cell measurement task in a conventional neighbor cell list related to a non-ANR measurement task, and prepares for cell reselection; on the other hand, the UE performs some kind or several kinds of measurement tasks of the ANRF according to the previously stored ANRF configuration parameters, and records unknown neighbor detected cells (including physical layer information, layer 2 information above the physical layer, etc.) satisfying the log recording condition in an ANR log Table (ANRLogging Table) inside the UE.
The recording behavior in this step is referred to as ANR Logging or Logging for short, and refers to a recording action after the UE performs ANR measurement. When a certain neighboring cell in the conventional neighboring cell list of the UE meets the cell reselection condition, the UE still reselects to a target cell in the neighboring cell list according to an existing mode and is not interfered by ANR measurement, that is, the ANR measurement task is accompanied by the conventional cell reselection behavior of the UE, the cell reselection performance of the UE is not affected by the ANR measurement, and the UE performs the ANR measurement in a best effort manner (best effort) as much as possible.
Step 204: assuming that the UE selects a target cell in a certain neighbor cell list and reselects to enter, if the UE already has valid logging content in its ANR table, it indicates that its ANR measurement result is owned and can be reported in a certain RRC uplink message sent to the target RNC where the target cell is located.
In this step, the RRC uplink message used to indicate that the ANR measurement result is owned and can be reported may be: an RRC Connection Setup Complete (RRC Connection Setup Complete) message, a Cell Update (Cell Update) message, a URA Update (URA Update) message, a Measurement Report (Measurement Report) message,
step 205: optionally, after a certain Radio Resource Control (RRC) signaling interaction, the UE enters a state suitable for performing ANR measurement result reporting, and is ready to be reported. The reporting state may specifically be a Cell _ DCH state or a Cell _ FACH state.
Step 206: and the target RNC in which the target cell is located requires the UE to report the ANR measurement result through a certain RRC downlink message. This process is referred to as ANR Logging Results report and may be a UE information Request (uelnformation Request) message.
Step 207: according to the request of the target RNC, the UE reports the ANR measurement result previously stored in the ANR table through some RRC uplink message, which may be a UE Information Response (UE Information Response) message.
Step 208: and the target RNC maintains a related neighbor Relation list NRT (neighbor Relation Table) according to the obtained ANR measurement result.
In the Log ANR scheme of the conventional UTRA system shown in fig. 2, step 203 is a key step. For UE performing ANR measurement in PCH state, performing ANR measurement on an unknown neighboring cell by using a discontinuous reception idle period (UTRAN DRX Cycle DRX Off) in a UTRAN discontinuous reception period defined in the PCH state at a source cell, and recording (log) the unknown neighboring detection cell once the UE measures that the cell meets a certain recording condition; for the UE performing ANR measurement in Idle state, the source cell performs ANR measurement on the unknown neighbor cell using a discontinuous reception Idle period (CN domain specific DRX cycle Off) in discontinuous reception cycles specific to different domains of the core network defined in Idle state, and once the UE measures that the unknown neighbor cell satisfies a certain recording condition, it records the unknown neighbor cell. The discontinuous reception Idle period (DRX Cycle Off, hereinafter, abbreviated as DRX Cycle Off Idle period) in the discontinuous reception Cycle in the PCH state or the Idle state is relatively long, and the UE does not receive any control data or user data of the serving cell during this period, so the UE can sufficiently measure and evaluate the cell quality of the physical layer (L1) signal of the neighboring known cell.
In ANR measurement, in addition to measurement of known neighbor cells, the UE needs to measure physical signals of unknown neighbor detected cells and evaluate cell quality, and if necessary, needs to read system message blocks (SIBs) of detected cells satisfying log conditions in order to obtain necessary layer 2(L2) information such as cell global identity, etc. As described above, after the UE enters the PCH or Idle state, it does not receive any control data from the RNC except Paging, system messages, and therefore, control configuration information related to ANR measurement is sent by the RNC and stored by the UE before the ANR measurement is started, and then the UE performs ANR measurement using these ANR configuration parameters reasonably while complying with the original cell reselection rule, and all ANR measurements are scheduled locally by the UE and performed in a best effort manner, and the success rate of receiving Paging by the UE cannot be sacrificed, and the original rule and behavior of cell reselection by the UE in the conventional neighbor list are not destroyed, so the Log ANR scheme of the existing UTRA system may cause the following problems:
the network may issue one or more of the four types of ANR tasks of intra-frequency, out-of-frequency (multiple frequency points), cross-LTE and cross-GSM (which is a problem for the RNC to issue the ANR parameter configuration implementation) at the same time. If the network only issues one type of ANR task at a time, then it is clear how to schedule the DRX Cycle Off idle period in performing a single type of ANR measurement, such as: the network only configures ANR measurement on a certain frequency point except for frequency, and then the UE uses other DRX Cycle Off idle periods except the DRX Cycle Off idle period used for measurement of the known neighbor cell in the conventional neighbor cell list to carry out ANR measurement on the frequency point, namely searching for the unknown cell on the frequency point;
if the network sends multiple types of ANR tasks at the same time for each task, different UEs may have different ANR measurement scheduling processing manners. For example, mode 1: according to different priority levels of different frequency points of UMTS and different frequency points of LTE/GSM, ANR measurement is started from the frequency point with the highest priority level, and after a period of time (possibly absolute time length or N adjacent unknown cells searched by the UE) is executed, an ANR task on the frequency point with the low priority level is executed, which is a mode for scheduling the ANR measurement by the UE. Mode 2: the UE performs various tasks in an interlaced manner, that is, first performs in-band ANR measurement using N DRX cycles, then performs out-of-band ANR measurement using M DRX cycles, then performs ANR measurement across GSM using L DRX cycles, and so on, after a large period, the previous measurement execution sequence is repeated, which is another way for the UE to schedule ANR measurement. Mode 3: according to the inherent normal inter-neighbor list cell reselection tendency of the UE, some kind of ANR measurement is performed, such as: when UE intra-frequency cell reselection measurements are triggered, ANR measurements are made for unknown cells within the frequency using all available DRX cycle Off idle periods. When UE (user equipment) is triggered to reselect and measure across GSM (global system for mobile communications) cells, performing ANR (automatic neighbor relation) measurement on unknown cells of a GSM (global system for mobile communications) system by using all available DRX cycle Off idle periods, and so on;
since how the UE schedules the DRX Cycle Off idle period to perform the ANR measurement is a behavior relative to the local UE, if the network does not know how the UE schedules the DRX Cycle Off idle period to perform the ANR measurement at all and does not know how long the UE stays in the state of having the long DRX Cycle Off idle period can last, the network cannot expect that after the UE passes a period of time, the ANR measurement can record which new neighbor relations log to, that is, the performance of the ANR scheme is only a Best Effort (Best Effort) operation at present. Such as: in a certain area, the neighbor relation between cells of different frequencies of the network is poor (missing, mismatching), but the neighbor relation between cells within the same frequency is good, so the network should preferentially use more DRX Cycle Off idle periods for ANR measurement between different frequencies, and fully record unknown neighbor cells outside the frequencies really needed by the log, so that the ANR measurement result has certain quality guarantee.
However, how to schedule the DRX Cycle Off idle periods to perform the ANR measurement is a behavior local to the UE in the prior art, so the network side cannot use more DRX Cycle Off idle periods for ANR measurement between different frequencies, and cannot well and sufficiently record unknown neighboring cells outside the frequency actually required by the log, so that a certain quality guarantee cannot be ensured for the ANR measurement result.
Based on the above description, in order to improve the performance of the ANR measurement log, quality-guaranteed ANR measurement is performed. The UE should be able to make the ANR measurement log more specifically than the pure Best Effort, with certain network expectations. The invention provides a mechanism, which enables a network to better coordinate different types of ANR measurement behaviors of UE through ANR configuration parameters.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a method and a system for implementing automatic neighbor relation measurement, which can improve the performance of an ANR measurement log and perform an ANR measurement with quality assurance.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method for realizing automatic neighbor relation measurement comprises the following steps:
before a user terminal UE performs Automatic Neighbor Relation (ANR) measurement, a network side sends ANR measurement control configuration parameters containing different types of ANR measurement scheduling related control parameters to the UE;
and when the UE executes the ANR measurement, measuring different types of adjacent unknown cells according to the received scheduling related control parameters for the different types of ANR measurement.
The method also comprises the following steps: and the UE reports the UE with quality assurance ANR measurement capability to a network side.
The reporting of the UE as the UE with the quality assurance ANR measurement capability by the UE comprises the following steps:
and the UE adds a radio access capability cell for informing the RNC in a radio resource connection establishment completion message or the UE radio access capability cell contained in the UE capability information message, and the UE has a sub-cell supporting quality Assurance (ANR) measurement capability.
The scheduling-related control parameters for different types of ANR measurements include:
a percentage of a discontinuous reception idle period, DRX Cycle Off, in a discontinuous reception period of an Off-frequency ANR measurement, and/or,
a percentage of DRX Cycle Off idle periods of the intra-frequency ANR measurements, and/or,
a percentage of DRX Cycle Off idle periods measured across LTE ANR, and/or,
percentage of DRX Cycle Off idle period measured across GSM ANR.
The method further comprises the following steps: the UE sets variables in advance locally: a percentage DRX _ rate _ intra _ freq variable of DRX Cycle Off idle periods measured by Off-frequency ANR, a percentage DRX _ rate _ inter _ freq variable of DRX Cycle Off idle periods measured by in-frequency ANR, a percentage DRX _ rate _ inter _ LTE variable of DRX Cycle Off idle periods measured across LTE ANR, a percentage DRX _ rate _ inter _ GSM variable of DRX Cycle Off idle periods measured across GSM ANR, wherein the initial values of the variables are Null Nulls;
and when the UE receives ANR measurement control configuration parameters containing control parameters related to different types of ANR measurement scheduling, assigning corresponding values to corresponding variables.
The measuring different types of adjacent unknown cells according to the received related control parameters for measuring and scheduling the different types of ANR comprises:
the UE is in a PCH state, a source cell periodically measures different types of adjacent unknown cells according to the percentage of received ANR measurement control configuration parameters of different types of ANR measurement scheduling related control parameters by using a DRX cycle in the PCH state, and once the UE measures that the unknown adjacent cells meet recording conditions and record;
and the UE is in an Idle state, the source cell periodically measures different types of adjacent unknown cells according to the proportion of the received ANR measurement control configuration parameters of the different types of ANR measurement scheduling related control parameters by using the DRX cycle in the Idle state, and once the UE measures that the unknown adjacent cells meet the recording condition, the UE records the measurement result.
The method further comprises the following steps: the UE simultaneously performs conventional intra-neighbor cell measurements prepared for cell reselection.
The method further comprises the following steps: when the UE enters a certain state suitable for executing ANR measurement result reporting, reporting the ANR measurement result to a network;
the UE clears the value of the DRX _ rate _ intra _ freq variable, and/or DRX _ rate _ inter _ LTE variable, and/or DRX _ rate _ inter _ GSM variable.
The UE reports an ANR logs recording result in a target cell indication through a cell updating process; or,
the UE indicates that valid ANR measurement results have been recorded by sending an RRC connection request procedure.
A system for implementing automatic neighbor relation measurement at least comprises a network side and a UE, wherein,
the network side is used for sending ANR measurement control configuration parameters containing relevant control parameters for different types of ANR measurement scheduling to the UE before the UE executes ANR measurement;
and the UE is used for measuring different types of adjacent unknown cells according to the received scheduling related control parameters for different types of ANR measurement when the ANR measurement is executed.
The UE is further configured to store the received ANR measurement control configuration parameter.
And the UE is also used for reporting the UE with the quality assurance ANR measurement capability to a network side.
And the UE is also used for reporting the ANR measurement result to the network when entering a state suitable for reporting the ANR measurement result.
According to the technical scheme provided by the invention, before the UE performs the ANR measurement, the network side sends the ANR measurement control configuration parameters containing the relevant control parameters for different types of ANR measurement scheduling to the UE, and when the UE performs the ANR measurement, the UE measures the different types of adjacent unknown cells according to the received relevant control parameters for different types of ANR measurement scheduling. In the invention, UE measures different types of adjacent unknown cells according to the proportion of received ANR measurement control configuration parameters of different types of ANR measurement scheduling related control parameters. In this way, the UE performs the ANR measurement log more specifically than the Best Effort under a certain network expectation, so that the performance of the ANR measurement log is improved, and the quality-guaranteed ANR measurement is performed.
Drawings
Fig. 1 is a schematic diagram of a system architecture of a conventional UTRA;
FIG. 2 is a flow chart of a prior art method of implementing ANR measurement;
FIG. 3 is a flow chart of a method of implementing ANR measurement according to the present invention;
FIG. 4 is a schematic diagram of a system for implementing ANR measurement according to the present invention;
FIG. 5 is a flowchart illustrating a first embodiment of implementing ANR measurement according to the present invention;
fig. 6 is a flowchart illustrating an ANR measurement according to a second embodiment of the present invention.
Detailed Description
Fig. 3 is a flowchart of a method for implementing ANR measurement according to the present invention, as shown in fig. 3, including:
step 300: before the UE executes the ANR measurement, the network side sends the ANR measurement control configuration parameters containing the control parameters related to different types of ANR measurement scheduling to the UE.
The cell body structure for measuring the scheduling-related control parameters for different types of ANR is shown in table 1.
TABLE 1
In table 1, the sum of the proportion of 4 sub-cells, i.e. out-of-frequency, in-frequency, across LTE and across GSM sub-cells, should be 100%. The scale values shown in table 1 are for illustrative purposes only and are intended to be exemplary, and the range of values specifically enumerated may be other values. In table 1, one Cycle length of different types of ANR measurements may be one DRX Cycle by default.
It should be noted that the sub-cells in table 1 may also take other forms, but the core idea of the self-trusted design is: the network compares 4 types of ANR basic tasks of in-frequency, out-of-frequency (a plurality of different frequency points), LTE (a plurality of different frequency points) and GSM (a plurality of different frequency points), carries out different priority compilation according to the objective requirements of the network, or carries out different weight configuration on the use amount of DRX cycles Off idle periods for different types of ANR measurement, so that the network can realize the purpose of obtaining the log content of the desired ANR measurement in a biased manner.
In this step, the UE stores the received ANR measurement control configuration parameter, which specifically includes:
UE local preset variables: a percentage DRX _ rate _ intra _ freq variable of DRX Cycle Off idle periods measured by Off-frequency ANR, a percentage DRX _ rate _ inter _ freq variable of DRX Cycle Off idle periods measured by in-frequency ANR, a percentage DRX Cycle Off idle periods measured across LTE ANR, a percentage DRX _ rate _ inter _ LTE variable of DRX Cycle Off idle periods measured across GSM ANR, the initial values of these variables being Null. When the UE receives an ANR measurement control configuration parameter containing control parameters related to different types of ANR measurement scheduling, a corresponding value is assigned to a corresponding variable.
Step 300 is preceded by: and the UE reports the UE with quality assurance ANR measurement capability to the network side. The specific implementation comprises the following steps: adding a new sub-cell to a cell contained in a radio resource connection setup complete (RRC connection setup complete) or UE Capability Information (UE Capability Information) uplink message, that is, a UE radio access Capability (UE radio access Capability) cell, for example, named as: the UE is configured with a support of quality Assurance (ANR) measurement capability (hereinafter, ANR) sub-cell, and configured to notify the RNC. If the sub-information element is not contained in the UE radio access capability information element, it indicates that the UE does not support the quality-guaranteed ANR measurement capability.
Step 301: and when the UE executes the ANR measurement, measuring different types of adjacent unknown cells according to the received scheduling related control parameters for the different types of ANR measurement. The method specifically comprises the following steps:
UE in PCH state, using DRX cycle defined in PCH state in source cell, periodically measuring different types of adjacent unknown cells according to received proportion of ANR measurement control configuration parameters of different types of ANR measurement scheduling related control parameters, once UE measures that unknown adjacent cells meet certain recording condition, logging the unknown adjacent cells;
and the UE in the Idle state measures the different types of adjacent unknown cells periodically according to the received proportion of the ANR measurement control configuration parameters of the control parameters related to the different types of ANR measurement scheduling by using the DRX cycle defined in the Idle state in the source cell, and the UE measures the unknown adjacent cells under log conditions once the UE measures that the unknown adjacent cells meet certain recording conditions.
The recording conditions of the above movement may be: and when the measured quality or strength of the radio signal of the unknown adjacent cell meets the absolute threshold and the relative threshold issued by the network side in the ANR configuration parameter.
It should be noted that, at the same time, the UE performs the conventional intra-neighbor cell measurement in the neighbor cell list prepared for cell reselection. The implementation of this is consistent with the prior art and is not described in detail here, but rather the emphasis is: and measuring the different types of adjacent unknown cells according to the received proportion of the ANR measurement control configuration parameters of the different types of ANR measurement scheduling related control parameters. In this way, the UE performs the ANR measurement log more specifically than the Best Effort under a certain network expectation, so that the performance of the ANR measurement log is improved, and the quality-guaranteed ANR measurement is performed.
The method of the present invention further comprises step 302: when the UE enters a state suitable for performing ANR measurement result reporting, the UE reports the ANR measurement result to the network, and the specific implementation belongs to the prior art, which is not described herein again. Meanwhile, the UE clears the value of the internal variable, i.e., DRX _ rate _ intra _ freq variable, and/or DRX _ rate _ inter _ LTE variable, and/or DRX _ rate _ inter _ GSM variable, to Null.
For the method of the present invention, there is also provided a system for implementing ANR measurement, as shown in fig. 4, at least including a network side, a UE, wherein,
the network side is used for sending ANR measurement control configuration parameters containing relevant control parameters for different types of ANR measurement scheduling to the UE before the UE executes ANR measurement;
and the UE is used for measuring different types of adjacent unknown cells according to the received scheduling related control parameters for different types of ANR measurement when the ANR measurement is executed.
And the UE is also used for reporting the ANR measurement result to the network when entering a state suitable for reporting the ANR measurement result.
And the UE is also used for saving the received ANR measurement control configuration parameters.
And the UE is also used for reporting the UE with the quality assurance ANR measurement capability to the network side.
The process of the present invention is described in detail below with reference to specific examples.
Fig. 5 is a flowchart illustrating a first embodiment of implementing ANR measurement according to the present invention, where in the first embodiment, it is assumed that a UE with a quality assurance ANR measurement capability is in a Cell _ DCH data transmission state in a Source Cell, and obtains an ANR measurement configuration parameter at the same time, then data transmission ends and enters a Cell _ PCH state, and a Source RNC in which a Source Cell is located selects to execute an intra-frequency and extra-frequency ANR measurement task without performing an ANR measurement across LTE and GSM. As shown in fig. 5, the method specifically includes:
step 500: the RNC knows the UE's ability to support ANR measurement control that accepts network quality guarantees.
Step 501: the source RNC sends the ANR-related control Configuration parameters to the UE by issuing a recorded Measurement Configuration (Logged Measurement Configuration) message.
In this step, the ANR related control configuration parameters include cells representing scheduling related control parameters for different types of ANR measurements, and in the first embodiment, these cells are assumed to be assigned as follows: DRX Cycle Usage rates for differential ANR measurements { intra-freq: 50%, Inter-freq: 50%, Inter-LTE: 0%, Inter-GSM: 0% }. The UE saves the received cell values in local variables, i.e. DRX _ rate _ intra _ freq is 50%, DRX _ rate _ inter _ LTE is 0%, and DRX _ rate _ inter _ GSM is 0%.
Step 503: in the Cell _ PCH state, the UE performs measurement of an unknown neighbor Cell related to ANR while performing measurement of a neighbor Cell in a neighbor list prepared for Cell reselection. Specifically, the method comprises the following steps: within one ANR measurement DRX Cycle, 50% of the DRX Cycle Off idle period is used for in-frequency ANR measurement, and 50% of the DRX Cycle is used for out-of-frequency ANR measurement. In this embodiment, it is assumed that 1 same-frequency unknown neighboring cell and 1 out-of-frequency unknown neighboring cell are discovered and recorded in sequence, and the Log thereof is recorded in the local ANR Log table.
Step 504: and the UE finishes conventional Cell reselection, and reports the ANR logs recording result indication at the target Cell indication through a Cell Update flow (Cell Update).
It should be noted that, in the first embodiment, the UE still needs to perform cell reselection measurement and evaluation on the LTE/GSM cells in the neighbor cell list, but does not perform ANR measurement on the LTE/GSM cells outside the neighbor cell list.
Fig. 6 is a flowchart illustrating a second embodiment of implementing ANR measurement according to the present invention, where in the second embodiment, it is assumed that a certain UE with an ANR capability with quality assurance is in a Cell _ DCH call state in a certain Source Cell (Source Cell), a call is ended and enters an Idle state, and a Source RNC in which the Source Cell is located selects an ANR task that spans LTE and GSM within an execution frequency, where it is desirable to obtain more unknown neighbor Cell relationships that span GSM. As shown in fig. 6. The method specifically comprises the following steps:
step 600: the RNC knows the UE's ability to support ANR measurement control that accepts network quality guarantees.
Step 601: the source RNC sends the ANR-related control Configuration parameters to the UE before the UE enters the Idle state by issuing a recorded Measurement Configuration (Logged Configuration) message.
In this step, the ANR related control configuration parameters include cells representing scheduling related control parameters for different types of ANR measurements, and in the second embodiment, these cells are assumed to be assigned as follows: DRX Cycle Usage rates for differential ANR measurements { intra-freq: 25%, Inter-freq: 0%, Inter-LTE: 25%, Inter-GSM: 50% }. The UE saves the received cell values in local variables, i.e. DRX _ rate _ intra _ freq is 25%, DRX _ rate _ inter _ freq is 0%, DRX _ rate _ inter _ LTE is 25%, DRX _ rate _ inter _ GSM is 50%.
Step 603: in Idle state, the UE performs measurement of unknown neighbor cells related to ANR while performing neighbor cell measurement in a neighbor list prepared for cell reselection. Specifically, the method comprises the following steps: within one ANR measurement DRX Cycle, 25% of the DRX Cycle Off idle periods are used for in-frequency ANR measurements, 25% of the DRX Cycle Off idle periods are used for cross-lte eanr measurements, and 50% of the DRX Cycle Off idle periods are used for cross-GSM ANR measurements. In this embodiment, it is assumed that 0 same-frequency unknown neighbor cells, 1 cross-LTE unknown neighbor cell, and 2 cross-GSM unknown neighbor cells are successively discovered and recorded, and their logs are in the local ANR Log table.
Step 604: assuming that the UE has a requirement for uplink call in the target Cell, the UE sends an RRC connection Request (RRCConnection Request) procedure to indicate that an effective ANR measurement result has been recorded, and after entering Cell _ DCH, the UE reports an ANR logs recording result in the target Cell.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (12)
1. A method for realizing automatic neighbor relation measurement is characterized by comprising the following steps:
before a user terminal UE performs Automatic Neighbor Relation (ANR) measurement, a network side sends ANR measurement control configuration parameters containing different types of ANR measurement scheduling related control parameters to the UE;
when the UE executes ANR measurement, measuring different types of adjacent unknown cells according to the received scheduling related control parameters for the different types of ANR measurement;
wherein the measuring scheduling-related control parameters for different types of ANR comprises:
a percentage of a discontinuous reception idle period, DRX Cycle Off, in a discontinuous reception period of an Off-frequency ANR measurement, and/or,
a percentage of DRX Cycle Off idle periods of the intra-frequency ANR measurements, and/or,
a percentage of DRX Cycle Off idle periods measured across LTE ANR, and/or,
percentage of DRX Cycle Off idle period measured across GSM ANR.
2. The method of claim 1, further comprising, prior to the method: and the UE reports the UE with quality assurance ANR measurement capability to a network side.
3. The method of claim 2, wherein the reporting, by the UE, the UE as a quality-guaranteed ANR measurement capable UE comprises:
and the UE adds a radio access capability cell for informing the RNC in a radio resource connection establishment completion message or the UE radio access capability cell contained in the UE capability information message, and the UE has a sub-cell supporting quality Assurance (ANR) measurement capability.
4. The method of claim 1, further comprising: the UE sets variables in advance locally: a percentage DRX _ rate _ intra _ freq variable of a DRX Cycle Off idle period measured by Off-frequency ANR, a percentage DRX _ rate _ inter _ freq variable of a DRX Cycle Off idle period measured by in-frequency ANR, a percentage DRX _ rate _ inter _ LTE variable of a DRX Cycle Off idle period measured across LTE ANR, a percentage DRX _ rate _ inter _ GSM variable of a DRX Cycle Off idle period measured across GSM ANR, initial values of the variables being Null;
and when the UE receives ANR measurement control configuration parameters containing control parameters related to different types of ANR measurement scheduling, assigning corresponding values to corresponding variables.
5. The method of claim 2, wherein measuring different types of neighboring unknown cells according to received scheduling-related control parameters for different types of ANR measurements comprises:
the UE is in a PCH state, a source cell periodically measures different types of adjacent unknown cells according to the percentage of received ANR measurement control configuration parameters of different types of ANR measurement scheduling related control parameters by using a DRX cycle in the PCH state, and once the UE measures that the unknown adjacent cells meet recording conditions and record;
and the UE is in an Idle state, the source cell periodically measures different types of adjacent unknown cells according to the proportion of the received ANR measurement control configuration parameters of the different types of ANR measurement scheduling related control parameters by using the DRX cycle in the Idle state, and once the UE measures that the unknown adjacent cells meet the recording condition, the UE records the measurement result.
6. The method of claim 5, further comprising: the UE simultaneously performs conventional intra-neighbor cell measurements prepared for cell reselection.
7. The method of claim 4, further comprising: when the UE enters a certain state suitable for executing ANR measurement result reporting, reporting the ANR measurement result to a network;
the UE clears the value of the DRX _ rate _ intra _ freq variable, and/or DRX _ rate _ inter _ LTE variable, and/or DRX _ rate _ inter _ GSM variable.
8. The method of claim 7, wherein the UE reports an ANR logs recording result in a target cell indication through a cell update procedure; or,
the UE indicates that valid ANR measurement results have been recorded by sending an RRC connection request procedure.
9. A system for implementing automatic neighbor relation measurement at least comprises a network side and a UE, wherein,
the network side is used for sending ANR measurement control configuration parameters containing relevant control parameters for different types of ANR measurement scheduling to the UE before the UE executes ANR measurement;
the UE is used for measuring different types of adjacent unknown cells according to the received scheduling related control parameters for different types of ANR measurement when the ANR measurement is executed;
wherein the measuring scheduling-related control parameters for different types of ANR comprises:
a percentage of a discontinuous reception idle period, DRX Cycle Off, in a discontinuous reception period of an Off-frequency ANR measurement, and/or,
a percentage of DRX Cycle Off idle periods of the intra-frequency ANR measurements, and/or,
a percentage of DRX Cycle Off idle periods measured across LTE ANR, and/or,
percentage of DRX Cycle Off idle period measured across GSM ANR.
10. The system of claim 9, wherein the UE is further configured to save the received ANR measurement control configuration parameters.
11. The system of claim 10, wherein the UE is further configured to report to the network side that the UE is a UE with quality assurance ANR measurement capability.
12. The system according to any one of claims 9 to 11, wherein the UE is further configured to report the ANR measurement result to a network when entering a state suitable for performing ANR measurement result reporting.
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| EP2918093B1 (en) | 2012-11-12 | 2019-06-19 | Telefonaktiebolaget LM Ericsson (publ) | Drx parameter configuration method and associated base station for facilitating anr measurement |
| CN103874094A (en) | 2012-12-13 | 2014-06-18 | 中兴通讯股份有限公司 | ANR task execution method, ANR task execution system, ANR user equipment management method and ANR user equipment management device |
| CN105612783B (en) * | 2014-01-26 | 2019-03-26 | 华为技术有限公司 | Residence reselecting, user equipment and the network equipment |
| CN109391998B (en) * | 2017-08-04 | 2020-09-15 | 电信科学技术研究院 | Neighbor cell measurement method and device |
| CN109600783A (en) * | 2017-09-30 | 2019-04-09 | 中国移动通信有限公司研究院 | Cell measurements report method, cell measurements method of reseptance and equipment |
| CN110545549B (en) * | 2018-05-29 | 2023-01-03 | 维沃移动通信有限公司 | Cell measurement method, measurement configuration method, terminal and network equipment |
| CN110740495B (en) * | 2018-07-18 | 2021-06-29 | 中国移动通信有限公司研究院 | Method for reducing power consumption of terminal, UE, base station and computer storage medium |
| WO2020029218A1 (en) * | 2018-08-10 | 2020-02-13 | Nokia Shanghai Bell Co., Ltd. | Neighbor cell measurement and reporting |
| CN111757349A (en) | 2019-03-29 | 2020-10-09 | 华为技术有限公司 | Measuring method and device |
| CN110972219A (en) * | 2019-11-27 | 2020-04-07 | Oppo广东移动通信有限公司 | Information processing method, terminal device, network device, and storage medium |
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| CN101365223A (en) * | 2007-08-09 | 2009-02-11 | 华为技术有限公司 | Method and apparatus for nearby region measurement, nearby region selection in long term evolution system |
| CN101594631A (en) * | 2008-05-28 | 2009-12-02 | 华为技术有限公司 | Automatic neighboring relationship method of measurement, terminal equipment and base station equipment |
| CN101355801A (en) * | 2008-09-12 | 2009-01-28 | 信息产业部电信传输研究所 | Method for supporting system-striding resident and switch of multi-mode terminal |
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