CN112243272A - Pilot frequency switching method and device - Google Patents
Pilot frequency switching method and device Download PDFInfo
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- CN112243272A CN112243272A CN201910642634.XA CN201910642634A CN112243272A CN 112243272 A CN112243272 A CN 112243272A CN 201910642634 A CN201910642634 A CN 201910642634A CN 112243272 A CN112243272 A CN 112243272A
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Abstract
The invention discloses a pilot frequency switching method and a device, wherein the method comprises the following steps: sending a plurality of pre-configured pilot frequency start-up measurement thresholds of different levels to user equipment, so that the user equipment can judge whether a pilot frequency start-up measurement condition is met according to each pilot frequency start-up measurement threshold; receiving a pilot frequency measurement report sent by user equipment after the user equipment judges that the pilot frequency start-up measurement condition is met; according to the level of the pilot frequency start measuring threshold contained in the pilot frequency measuring report, determining a pilot frequency point which is configured in advance and corresponds to the level of the pilot frequency start measuring threshold; and sending the measurement configuration information of the pre-configured pilot frequency points to the user equipment, and determining whether to control the user equipment to execute pilot frequency switching or not according to a measurement result returned by the user equipment. The invention can utilize different pilot frequency start-up measurement thresholds to control the start of pilot frequency measurement, thereby realizing the hierarchical measurement aiming at the pilot frequency points of different levels.
Description
Technical Field
The invention relates to the field of communication, in particular to a pilot frequency switching method and a pilot frequency switching device.
Background
The connected mobility management is based on a process that when a User Equipment (UE) is in an rrc (radio Resource control) connected state and a synchronized state, the UE reports a location and an identifier of the UE to a network side, and the network side allows the UE to maintain a physical channel and switch a serving cell according to various policies.
The processing procedure and related network elements for connected state mobility management are generally shown in fig. 5, and fig. 5 shows the overall flow of cell handover. Specifically, the coverage-based serving cell handover includes three major categories, i.e., intra-frequency handover, inter-frequency handover, and inter-system handover. The application scenario of the present invention is coverage-based inter-frequency handover, and four links of coverage-based inter-frequency handover in the prior art can be described in detail as follows:
(1) triggering a reason link: triggering inter-frequency measurement based on the covered event a2, where the event a2 refers to the signal quality of the serving cell being lower than a corresponding threshold, the specific triggering condition of the event a2 is Ms + Hys < Thresh and lasting timetotrigg time, the specific cancelling condition of the event a2 is Ms-Hys > Thresh and lasting timetotrigg time, where Ms represents the serving cell measurement result, the serving cell measurement result may be measured by Reference Signal Received Power (RSRP) or reference signal received power (RSRQ), Hys represents a hysteresis value of the measurement result, timetotrigg represents a duration of time that continuously satisfies the event entry condition, and Thresh represents a threshold value of the event a 2. FIG. 6 illustrates the triggering and cancellation of event A2.
(2) And (3) a measuring link: and the source base station eNodeB issues a measurement frequency point and relevant parameters of an event A3/A4/A5, and reports a measurement report after the measurement result of the user equipment UE meets a specific condition and lasts for the TimeToTrig time.
(3) A target cell judgment link: the source base station eNodeB carries out evaluation decision on the target cell list, mainly filters lists such as blacklist cells, cells of 'forbidden switching identification' and the like, and finally determines a switching target cell.
(4) And (3) switching links: the source base station eNodeB initiates a switching request and data forwarding through an X2 interface and an S1 interface in a self-adaptive manner, and the user equipment UE completes physical channel reconfiguration.
When the events A3, a4 and a5 are used for inter-frequency neighbor cell handover, the source base station issues corresponding measurement configuration to start inter-frequency measurement. The current implementation is that when the UE reports an event a2 measurement report, the eNodeB base station issues the event a2 measurement related event measurement object. For example, the UE reports an inter-frequency event a2 measurement report based on the event A3, the source base station eNodeB base station issues specific inter-frequency points as measObject (measurement objects), and the trigger type configured for these measurement objects (frequency points) is the event A3. That is, one cell may be configured with a plurality of a2 thresholds, each associated with a different inter-frequency handover event.
The correlation between events is shown in table 1 below.
TABLE 1 Association between events
In a complex network environment, a cell needs to be configured with a plurality of adjacent cells and adjacent frequency points, all the adjacent frequency points configured with an event A3 share the same a2 threshold, and all the adjacent frequency points configured with events a4 and a5 share the same a2 threshold. The existing scheme can not independently configure the threshold of a single adjacent frequency point A2 (pilot frequency start measurement threshold) and can not be suitable for certain specific scenes.
For example: the main cell is Band38 frequency point D1, and the configured adjacent frequency points are as follows: frequency point D2 in Band, frequency point F1 in Band 39; d2 switching event configuration is A3; for coverage continuity, the switching event of F1 is also configured as A3. Under the scene, the D1 and D2 frequency points have weaker covering capability but low interference and are suitable for being used as a capacity layer; f1 frequency point has strong covering ability but high interference, and is suitable for being used as a covering layer. In the prior art, the inter-frequency event A3 can only be associated with one a2 threshold, when the UE meets the a2 threshold, measurement is started for both D2 and F1, and since the coverage of F1 is stronger than that of D2, the handover target cell of the UE is F1 rather than D2, which is not favorable for service absorption in the capacity layer, and frequent handover is likely to occur, so that the system load is increased.
Disclosure of Invention
In view of the above, the present invention is proposed to provide an inter-frequency handover method and apparatus that overcomes or at least partially solves the above problems.
According to an aspect of the present invention, there is provided an inter-frequency handover method, including:
sending a plurality of pre-configured pilot frequency start-up measurement thresholds of different levels to user equipment, so that the user equipment can judge whether a pilot frequency start-up measurement condition is met according to each pilot frequency start-up measurement threshold;
receiving a pilot frequency measurement report sent by user equipment after the user equipment judges that the pilot frequency start-up measurement condition is met according to a pilot frequency start-up measurement threshold;
according to the level of the pilot frequency start measuring threshold contained in the pilot frequency measuring report, determining a pilot frequency point which is configured in advance and corresponds to the level of the pilot frequency start measuring threshold;
sending the pre-configured measurement configuration information of the pilot frequency points corresponding to the level of the pilot frequency starting measurement threshold to user equipment, and determining whether to control the user equipment to execute pilot frequency switching according to a measurement result which is returned by the user equipment and corresponds to the measurement configuration information.
Optionally, before the performing of the method, the method further includes:
determining a plurality of pilot frequency points corresponding to a preset switching event;
dividing a plurality of pilot frequency points into a plurality of levels; wherein each level comprises at least one pilot frequency point;
and respectively configuring a pilot frequency start-up threshold corresponding to each level.
Optionally, after configuring, for each level, a pilot frequency start measurement threshold corresponding to the level, the method further includes:
respectively storing the pilot frequency start-up measurement threshold corresponding to each level and at least one pilot frequency point corresponding to each level in a preset configuration table in an associated manner;
determining the pre-configured pilot frequency points corresponding to the level of the pilot frequency start measurement threshold comprises: and determining a pilot frequency point which is configured in advance and corresponds to the level of the pilot frequency start measuring threshold according to a preset configuration table.
Optionally, dividing the multiple pilot frequency points into multiple levels includes:
and dividing according to the capacity layer or the covering layer of each pilot frequency point and/or the covering condition of each pilot frequency point.
Optionally, configuring the inter-frequency threshold corresponding to the level includes:
and configuring that the pilot frequency start-up threshold corresponding to the level of the pilot frequency point of the capacity layer is higher than the pilot frequency start-up threshold corresponding to the level of the pilot frequency point of the covering layer.
Optionally, determining whether to control the ue to perform inter-frequency handover according to a measurement result corresponding to the measurement configuration information returned by the ue includes:
when a measurement result corresponding to the measurement configuration information returned by the user equipment meets a preset switching condition, executing pilot frequency switching according to a preset switching event;
and when the measurement result corresponding to the measurement configuration information returned by the user equipment does not accord with the preset switching condition, continuing to execute the step of receiving the pilot frequency measurement report sent by the user equipment after the user equipment judges that the pilot frequency measurement starting condition is met according to the pilot frequency measurement starting threshold.
Optionally, the method described above is applied to a long term evolution network.
According to another aspect of the present invention, there is provided an inter-frequency handover apparatus, including:
the pilot frequency starting measurement threshold sending module is suitable for sending a plurality of pilot frequency starting measurement thresholds with different levels configured in advance to the user equipment so that the user equipment can judge whether the pilot frequency starting measurement conditions are met according to each pilot frequency starting measurement threshold;
a pilot frequency measurement report receiving module, adapted to receive a pilot frequency measurement report sent after the user equipment determines that a pilot frequency start-up condition is met according to the pilot frequency start-up threshold;
the pilot frequency point determining module is suitable for determining a pre-configured pilot frequency point corresponding to the level of the pilot frequency start measuring threshold according to the level of the pilot frequency start measuring threshold contained in the pilot frequency measuring report;
and the pilot frequency switching control module is suitable for sending the pre-configured measurement configuration information of the pilot frequency points corresponding to the level of the pilot frequency starting measurement threshold to the user equipment, and determining whether to control the user equipment to execute pilot frequency switching according to a measurement result which is returned by the user equipment and corresponds to the measurement configuration information.
Optionally, the apparatus further comprises: the pilot frequency threshold measurement configuration module is suitable for:
determining a plurality of pilot frequency points corresponding to a preset switching event;
dividing a plurality of pilot frequency points into a plurality of levels; wherein each level comprises at least one pilot frequency point;
and respectively configuring a pilot frequency start-up threshold corresponding to each level.
Optionally, the inter-frequency threshold configuration module is further adapted to:
respectively storing the pilot frequency start-up measurement threshold corresponding to each level and at least one pilot frequency point corresponding to each level in a preset configuration table in an associated manner;
the pilot frequency point determination module is adapted to: and determining a pilot frequency point which is configured in advance and corresponds to the level of the pilot frequency start measuring threshold according to a preset configuration table.
Optionally, the inter-frequency threshold configuration module is adapted to:
and dividing according to the capacity layer or the covering layer of each pilot frequency point and/or the covering condition of each pilot frequency point.
Optionally, the inter-frequency threshold configuration module is adapted to:
and configuring that the pilot frequency start-up threshold corresponding to the level of the pilot frequency point of the capacity layer is higher than the pilot frequency start-up threshold corresponding to the level of the pilot frequency point of the covering layer.
Optionally, the inter-frequency handover control module is adapted to:
when a measurement result corresponding to the measurement configuration information returned by the user equipment meets a preset switching condition, executing pilot frequency switching according to a preset switching event;
and when the measurement result corresponding to the measurement configuration information returned by the user equipment does not accord with the preset switching condition, continuing to execute the step of receiving the pilot frequency measurement report sent by the user equipment after the user equipment judges that the pilot frequency measurement starting condition is met according to the pilot frequency measurement starting threshold.
Optionally, the apparatus is applied to a long term evolution network.
According to still another aspect of the present invention, there is provided an electronic apparatus including: the system comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete mutual communication through the communication bus;
the memory is used for storing at least one executable instruction, and the executable instruction enables the processor to execute the operation corresponding to the pilot frequency switching method.
According to another aspect of the present invention, there is provided a computer storage medium having at least one executable instruction stored therein, where the executable instruction causes a processor to perform operations corresponding to the inter-frequency handover method as described above.
In the pilot frequency switching method and device provided by the invention, firstly, a plurality of pre-configured pilot frequency start-up measurement thresholds with different levels are sent to the user equipment, so that the user equipment can judge whether the pilot frequency start-up measurement condition is met according to each pilot frequency start-up measurement threshold. And then, receiving a pilot frequency measurement report sent after the user equipment judges that the pilot frequency starting condition is met. And then, according to the level of the pilot frequency start measuring threshold contained in the pilot frequency measuring report, determining a pilot frequency point which is configured in advance and corresponds to the level of the pilot frequency start measuring threshold. And finally, sending the measurement configuration information of the pre-configured pilot frequency points to the user equipment, and determining whether to control the user equipment to execute pilot frequency switching or not according to the measurement result returned by the user equipment. The invention can utilize different pilot frequency start-up measurement thresholds to control the start of pilot frequency measurement, thereby realizing the hierarchical measurement aiming at the pilot frequency points of different levels.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 shows a flowchart of an inter-frequency handover method according to an embodiment of the present invention;
fig. 2 shows a flowchart of an inter-frequency handover method according to a second embodiment of the present invention;
fig. 3 is a structural diagram of an inter-frequency switching apparatus according to a third embodiment of the present invention;
fig. 4 shows a schematic structural diagram of an electronic device according to a fifth embodiment of the present invention;
fig. 5 shows a cell handover overall flow;
FIG. 6 illustrates the triggering and cancellation of event A2;
FIG. 7 shows event A2 and a hierarchical measurement flow diagram.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Example one
Fig. 1 shows a flowchart of an inter-frequency handover method according to an embodiment of the present invention. As shown in fig. 1, the method includes:
step S110: and sending a plurality of pre-configured pilot frequency start-up measurement thresholds of different levels to the user equipment, so that the user equipment can judge whether the pilot frequency start-up measurement conditions are met according to each pilot frequency start-up measurement threshold.
The inter-frequency initiation threshold is a threshold for triggering inter-frequency measurement by event a2, and when a Reference Signal Receiving Power (Reference Signal Receiving Power) measurement value of a serving cell is lower than the inter-frequency initiation threshold, event a2 triggers inter-frequency measurement. RSRP measurement values are key parameters representing the serving cell signal quality is low. It should be noted that the preset inter-frequency threshold is classified, for example, the inter-frequency threshold is divided into RankThresh1, RankThresh2, and RankThresh3, where RankThresh 1> RankThresh 2> RankThresh 3.
Specifically, first, the execution main body of the present invention sends a plurality of pre-configured inter-frequency threshold values of different levels to the user equipment. Then, the user equipment judges whether the pilot frequency start-up measurement condition is met according to each pilot frequency start-up measurement threshold. In specific implementation, the user equipment obtains the RSRP measurement value of the serving cell where the user equipment is located, and compares the RSRP measurement value of the serving cell with the pilot frequency start measurement threshold. If the RSRP measurement value of the serving cell is lower than the pilot frequency start measurement threshold, it is determined that the serving cell in which the ue is located satisfies the pilot frequency start measurement condition, and event a2 triggers pilot frequency measurement.
Step S120: and receiving a pilot frequency measurement report sent after the user equipment judges that the pilot frequency start-up measurement condition is met according to the pilot frequency start-up measurement threshold.
The inter-frequency measurement report refers to a measurement report sent by the ue for an inter-frequency start measurement threshold participating in the inter-frequency start measurement condition determination in step S110.
Specifically, the user equipment determines that the serving cell of the user equipment meets the pilot frequency start-up measurement condition according to the received pilot frequency start-up measurement threshold and the obtained RSRP measurement value of the serving cell of the user equipment. And the user equipment generates a pilot frequency measurement report according to the pilot frequency start measurement threshold participating in the judgment of the pilot frequency start measurement condition, wherein the pilot frequency measurement report comprises the level of the pilot frequency start measurement threshold and the result of the current pilot frequency measurement.
Step S130: and determining a pre-configured pilot frequency point corresponding to the level of the pilot frequency start measuring threshold according to the level of the pilot frequency start measuring threshold contained in the pilot frequency measuring report.
The pilot frequency points refer to a set of pre-configured pilot frequency points in a serving cell and pilot frequency points in an adjacent cell. It should be noted that the pre-configured pilot frequency points are divided into multiple levels, and the levels of the pilot frequency points are pre-associated and stored with the pilot frequency start-up threshold in step S110. Specifically, the pilot frequency points are divided into three levels of RankPoint1, RankPoint2 and RankPoint3, and each level of pilot frequency points includes at least one pilot frequency point. The levels of the pilot frequency points and the pilot frequency start-up threshold are stored in advance in an associated manner, for example, the levels of the pilot frequency points at the RankPoint1 level and the pilot frequency start-up threshold RankThresh1 are stored in advance in an associated manner, the levels of the pilot frequency points at the RankPoint2 level and the pilot frequency start-up threshold RankThresh2 are stored in an associated manner, and the levels of the pilot frequency points at the RankPoint3 level and the pilot frequency start-up threshold RankThresh3 are stored in an associated manner.
Step S140: sending the pre-configured measurement configuration information of the pilot frequency points corresponding to the level of the pilot frequency starting measurement threshold to the user equipment, and determining whether to control the user equipment to execute pilot frequency switching according to the measurement result corresponding to the measurement configuration information returned by the user equipment.
The measurement configuration information refers to a pilot frequency start measurement threshold corresponding to the level of the pilot frequency point.
Specifically, first, the execution main body of the present invention sends the measurement configuration information of the pilot frequency point, which is configured in advance and corresponds to the level of the pilot frequency start measurement threshold, to the user equipment. Then, the user equipment obtains the pilot frequency start measurement threshold corresponding to the level of the pilot frequency point in the measurement configuration information. The user equipment obtains the RSRP measured value of the service cell where the user equipment is located, the RSRP measured value of the service cell is compared with the pilot frequency start-up measurement threshold corresponding to the level of the pilot frequency point, if the RSRP measured value of the service cell is lower than the pilot frequency start-up measurement threshold corresponding to the level of the pilot frequency point, the measurement result that the service cell meets the preset switching condition is sent to the execution main body of the invention, and if the RSRP measured value of the service cell is not lower than the pilot frequency start-up measurement threshold corresponding to the level of the pilot frequency point, the measurement result that the service cell does not meet the preset switching condition is sent to the execution main body of the invention. Finally, the execution main body of the invention determines whether to control the user equipment to execute the pilot frequency switching according to the received measurement result. Specifically, if the measurement result is that the serving cell meets the preset handover condition, the ue is controlled to handover to a preset handover event corresponding to the pilot frequency point.
Therefore, the method can divide the pilot frequency points aiming at the same preset switching event into a plurality of levels, and configure the pilot frequency start-measuring threshold corresponding to each level aiming at the pilot frequency points of each level. And controlling the start of pilot frequency measurement by using different pilot frequency start-up thresholds so as to realize the hierarchical measurement aiming at the pilot frequency points of different levels.
Example two
Fig. 2 shows a flowchart of an inter-frequency handover method according to a second embodiment of the present invention. As shown in fig. 2, the method includes:
step S200: determining a plurality of pilot frequency points corresponding to a preset switching event, dividing the plurality of pilot frequency points into a plurality of levels, and configuring a pilot frequency start-up measurement threshold corresponding to each level.
The preset switching event refers to a cell switching event executed by the main body of the invention when the serving cell meets the preset switching condition. The pilot frequency point refers to a set of pre-configured pilot frequency points in a serving cell and pilot frequency points in adjacent cells. Note that the pre-configured pilot frequency points are divided into multiple levels.
Specifically, first, a plurality of different frequency points corresponding to a preset switching event are determined, and in specific implementation, when the preset switching event is of a plurality of types, a plurality of different frequency points corresponding to the type of switching event are determined respectively for each type of switching event. For example, the preset switching events are event A3, event a4 and event a5, the set of pilot frequency bins PointA3 is determined for event A3, the set of pilot frequency bins PointA4 is determined for event a4, and the set of pilot frequency bins PointA5 is determined for event a 5.
Then, dividing the multiple pilot frequency points into multiple levels, and configuring a pilot frequency start-up measurement threshold corresponding to each level for each level, wherein each level includes at least one pilot frequency point. Specifically, for example, the pilot frequency points in the pilot frequency point set PointA3 determined for the event a3 are divided into three levels, namely, RankPointA31, RankPointA32, and RankPointA33, a pilot frequency start-up threshold rankthresh 31 corresponding to the level is arranged for the pilot frequency points at the RankPointA31 level, a pilot frequency start-up threshold rankthresh 32 corresponding to the level is arranged for the pilot frequency points at the RankPointA32 level, and a pilot frequency start-up threshold rankthresh ha33 corresponding to the level is arranged for the pilot frequency points at the RankPointA33 level.
Further, in order to facilitate the query, after configuring, for each level, a pilot frequency start measurement threshold corresponding to the level, the method further includes: and respectively storing the pilot frequency start-up measurement threshold corresponding to each level and at least one pilot frequency point corresponding to each level into a preset configuration table in an associated manner. For example, the different-frequency points at the rank-kPointA 31 level and the different-frequency start-up threshold RankThreshA31 corresponding to the level are stored in a preset configuration table in an associated manner, the different-frequency points at the rank-kPointA 32 level and the different-frequency start-up threshold RankThreshA32 corresponding to the level are stored in the preset configuration table in an associated manner, and the different-frequency points at the rank-kPointA 33 level and the different-frequency start-up threshold RankThreshA33 corresponding to the level are stored in the preset configuration table in an associated manner.
Optionally, the method of the present application may be used in an LTE (Long Term Evolution) network. The LTE network is divided into a covering layer and a capacity layer, wherein the covering layer mainly meets the requirement of wireless coverage and is realized by a base station which has base station construction conditions and is easy to install and maintain. The capacity layer is mainly under a covering layer, a macro cell is used for providing a basic network, and micro cells, micro cells, home base stations and the like are used for increasing cell deep coverage, increasing network capacity, improving user perception and the like aiming at hot spot areas with high service capacity requirements. It follows that the signal quality of the capacity layer is better than that of the cover layer, and the cell of the capacity layer is preferred when selecting the target handover cell. Therefore, dividing the plurality of pilot frequency points into a plurality of levels includes: and dividing according to the capacity layer or the covering layer of each pilot frequency point and/or the covering condition of each pilot frequency point. Specifically, first, the pilot frequency points are divided into pilot frequency points of a capacity layer and pilot frequency points of a cover layer. Then, further according to the height of the covering condition, dividing the different frequency points in the capacity layer into a plurality of levels, and dividing the different frequency points in the covering layer into a plurality of levels. Wherein, the covering condition specifically includes: coverage, signal strength, coverage, interference strength, etc. In specific implementation, for example, the pilot frequency points in the pilot frequency point set PointA3 determined for the event a3 are divided into pilot frequency points at a rank kpointa31 level belonging to the capacity layer and pilot frequency points at a rank kpointa32 level belonging to the cover layer. And further dividing the different-frequency points at the RankPointA31 level belonging to the capacity layer into different-frequency points at the RankPointA311 level and different-frequency points at the RankPointA312 level according to the sequence of the coverage conditions from high to low according to the height of the coverage conditions, and dividing the different-frequency points at the RankPointA32 level belonging to the covering layer into different-frequency points at the RankPointA321 level and different-frequency points at the RankPointA322 level according to the sequence of the coverage conditions from high to low.
Meanwhile, configuring the pilot frequency start-up measurement threshold corresponding to each level comprises the following steps: and configuring that the pilot frequency start-up threshold corresponding to the level of the pilot frequency point of the capacity layer is higher than the pilot frequency start-up threshold corresponding to the level of the pilot frequency point of the covering layer. Specifically, a pilot frequency start-up threshold RankThreshA31 corresponding to the rank is configured for the pilot frequency points at the rankpoinga 31 rank belonging to the capacity layer, and a pilot frequency start-up threshold RankThreshA32 corresponding to the rank is configured for the pilot frequency points at the rankpoinga 32 rank belonging to the cover layer, wherein the pilot frequency start-up threshold RankThreshA31 corresponding to the rank to which the pilot frequency points of the capacity layer belong is higher than the pilot frequency start-up threshold RankThreshA32 corresponding to the rank to which the pilot frequency points of the cover layer belong. In addition, the pilot frequency points of a plurality of levels are divided according to the height of the coverage condition, and the pilot frequency starting measurement threshold configured for the pilot frequency points of higher levels is higher.
Step S210: and sending a plurality of pre-configured pilot frequency start-up measurement thresholds of different levels to the user equipment, so that the user equipment can judge whether the pilot frequency start-up measurement conditions are met according to each pilot frequency start-up measurement threshold.
Specifically, first, the execution main body of the present invention sends a plurality of pre-configured inter-frequency threshold values of different levels to the user equipment. Then, the user equipment judges whether the pilot frequency start-up measurement condition is met according to each pilot frequency start-up measurement threshold. In specific implementation, the pilot frequency points in the pilot frequency point set pointana 3 determined for the event a3 are divided into three levels of rankpointana 31, rankpointana 32 and rankpointana 33, and thresholds rankthresh 31, rankthresh 32 and rankthresh 33 for pilot frequency start are respectively configured for the three levels, wherein rankthresh 31 > rankthresh 32 > rankthresh 33. The user equipment obtains the RSRP measurement value of the serving cell where the user equipment is located, and compares the RSRP measurement value of the serving cell with the pilot frequency start measurement thresholds RankThreshA31, RankThreshA32 and RankThreshA33 respectively. It should be noted that the RSRP measurement value of the serving cell is first compared with the highest inter-frequency threshold rankthresh a 31. If the RSRP measurement value of the serving cell is lower than the pilot frequency start measurement threshold, the serving cell where the user equipment is located is judged to meet the pilot frequency start measurement condition, and event A2 triggers pilot frequency measurement.
Step S220: and receiving a pilot frequency measurement report sent after the user equipment judges that the pilot frequency start-up measurement condition is met according to the pilot frequency start-up measurement threshold.
Specifically, the ue generates a pilot frequency measurement report according to the pilot frequency start measurement threshold determined by the pilot frequency start measurement condition in step S210, where the pilot frequency measurement report includes the level of the pilot frequency start measurement threshold and the result of the current pilot frequency measurement.
Step S230: and determining a pre-configured pilot frequency point corresponding to the level of the pilot frequency start measuring threshold according to the level of the pilot frequency start measuring threshold contained in the pilot frequency measuring report.
Specifically, the level of the pilot frequency start measurement threshold included in the pilot frequency measurement report is obtained, and the pilot frequency point corresponding to the level of the pilot frequency start measurement threshold, which is configured in advance, is determined according to the preset configuration table in step S200.
Step S240: sending the pre-configured measurement configuration information of the pilot frequency points corresponding to the level of the pilot frequency starting measurement threshold to the user equipment, and determining whether to control the user equipment to execute pilot frequency switching according to the measurement result corresponding to the measurement configuration information returned by the user equipment.
Specifically, first, the execution main body of the present invention sends the measurement configuration information of the pilot frequency point configured in advance and corresponding to the level of the pilot frequency start measurement threshold participating in the judgment of the pilot frequency start measurement condition to the user equipment.
Then, the user equipment obtains the pilot frequency start measurement threshold corresponding to the level of the pilot frequency point in the measurement configuration information. The user equipment obtains the RSRP measured value of the service cell where the user equipment is located, the RSRP measured value of the service cell is compared with the pilot frequency start-up measurement threshold corresponding to the level of the pilot frequency point, if the RSRP measured value of the service cell is lower than the pilot frequency start-up measurement threshold corresponding to the level of the pilot frequency point, the measurement result that the service cell meets the preset switching condition is sent to the execution main body of the invention, and if the RSRP measured value of the service cell is not lower than the pilot frequency start-up measurement threshold corresponding to the level of the pilot frequency point, the measurement result that the service cell does not meet the preset switching condition is sent to the execution main body of the invention.
Finally, the execution main body of the invention determines whether to control the user equipment to execute the pilot frequency switching according to the measurement result which is returned by the user equipment and corresponds to the measurement configuration information. Determining whether to control the ue to perform inter-frequency handover according to a measurement result corresponding to the measurement configuration information returned by the ue specifically includes: when a measurement result corresponding to the measurement configuration information returned by the user equipment meets a preset switching condition, executing pilot frequency switching according to a preset switching event; and when the measurement result corresponding to the measurement configuration information returned by the user equipment does not accord with the preset switching condition, continuing to execute the step of receiving the pilot frequency measurement report sent by the user equipment after the user equipment judges that the pilot frequency measurement starting condition is met according to the pilot frequency measurement starting threshold. In specific implementation, first, the execution main body of the present invention compares the RSRP measurement value of the serving cell with the highest inter-frequency threshold rankthresh a31, determines a pre-configured inter-frequency point corresponding to the inter-frequency threshold rankthresh a31, sends the measurement configuration information of the inter-frequency point corresponding to the inter-frequency threshold rankthresh a31 to the user equipment, and executes inter-frequency handover according to a preset handover event when the measurement result corresponding to the measurement configuration information returned by the user equipment meets a preset handover condition. Then, as the RSRP measurement value of the serving cell gradually decreases, the execution subject of the present invention compares the RSRP measurement value of the serving cell with the inter-frequency threshold rankthresh a32, and continues the operations of steps S220 to S240.
Further, the invention executes a switch internally arranged in the main body, wherein the switch is used for controlling whether the method in the embodiment is adopted, and when the number of the pilot frequency points corresponding to the preset switching event is large, the switch is turned on, and the method in the embodiment is adopted.
In summary, the execution main body of the present invention sends the pilot frequency start-up measurement thresholds of different levels to the user equipment, and the user equipment determines whether the pilot frequency start-up measurement condition is satisfied according to each pilot frequency start-up measurement threshold. In the process that the RSRP measurement value of the serving cell is gradually reduced from high to low, the pilot frequency point corresponding to the higher pilot frequency starting measurement threshold starts measurement first, and the pilot frequency point corresponding to the lower pilot frequency starting measurement threshold starts measurement later, so that the hierarchical measurement aiming at the pilot frequency points of different levels is realized.
For the convenience of understanding, the following describes the specific implementation manner of the above method in the present invention in detail by taking a specific example as an example:
fig. 7 shows an event a2 and a hierarchical measurement flowchart, as shown in fig. 7, the base station eNodeB in this example is equivalent to the execution subject of the present invention, and the base station eNodeB hierarchically sets a plurality of event a2 thresholds, corresponding to a plurality of levels of adjacent frequency points. And in the measurement configuration, different measID are issued to User Equipment (UE), and one measID corresponds to one level of adjacent frequency point. And the UE reads the measurement configuration of the event A2 and reports the measurement report step by step when the conditions are met. And the base station eNodeB base station associates the adjacent frequency points according to the measID in the measurement report reported by the user equipment UE, and issues the measurement configuration containing the adjacent frequency points. The method comprises the following specific steps:
the method comprises the following steps: the measurement configuration sent by the base station eNodeB at least includes A2RankAmount measids, the measObject of the measids is a serving cell frequency Freq, the event type is A2, the threshold-RSRP configured for each measID is A2ThreshRank 1-A2 ThreshRank, and the threshold-RSRP is the threshold value of the frequency point corresponding to the measID. A2ThreshRank1> A2ThreshRank2> … > A2ThreshRankn is defined in this example. The base station eNodeB stores the measID, threshold-RSRP and other information sent to each UE, and the stored key information is shown in table 2 below.
Table 2 measurement configuration key information stored by base station eNodeB
Step two: the UE measures the RSRP of the serving cell, and when the threshold-RSRP of one (or more) measID(s) meets the TimeToTrig duration, an event A2 measurement report is triggered. The plurality of measIDs do not influence each other.
Step three: and the base station eNodeB receives the measurement report of the UE, reads the measID, and queries the table 2 to obtain the corresponding pilot frequency measurement level A2 Rank. The base station eNodeB base station inquires the pilot frequency adjacent frequency point(s) configured aiming at the A2Rank, and issues the measurement configuration of the frequency points.
Step four: the user equipment UE reads the measurement configuration of the pilot frequency point, measures the RSRP of the frequency point, and the following two conditions occur:
and if the measurement result of the designated pilot frequency point meets the event threshold, triggering an event A3/A4/A5 measurement report, and then jumping to the fifth step.
And in the other mode, the measurement result of the designated pilot frequency point does not meet the event threshold, but as the RSRP of the serving cell is gradually reduced, the threshold-RSRP of the next A2Rank and the TimeToTrig duration of the next A2Rank are met at a certain moment, and an event A2 measurement report is triggered. And skipping to the third step.
Step five: the base station eNodeB judges whether the handover controls the user equipment to execute the pilot frequency handover.
It should be noted that a switch may be built in the base station eNodeB, and the switch is used to control whether the base station eNodeB employs the method in this example. If the switch is turned on, the base station eNodeB adopts the method in the present example, and if the switch is turned off, the base station eNodeB adopts the method in the prior art.
EXAMPLE III
Fig. 3 is a schematic structural diagram of an inter-frequency handover apparatus according to a third embodiment of the present invention, where the apparatus includes:
a pilot frequency start-up threshold sending module 31, adapted to send a plurality of pilot frequency start-up thresholds of different levels configured in advance to the user equipment, so that the user equipment can determine whether a pilot frequency start-up condition is met according to each pilot frequency start-up threshold;
a pilot frequency measurement report receiving module 32, adapted to receive a pilot frequency measurement report sent after the ue determines that the pilot frequency start measurement condition is met according to the pilot frequency start measurement threshold;
a pilot frequency point determining module 33, adapted to determine a pilot frequency point corresponding to the level of the pilot frequency start measurement threshold, according to the level of the pilot frequency start measurement threshold included in the pilot frequency measurement report;
the pilot frequency switching control module 34 is adapted to send the pre-configured measurement configuration information of the pilot frequency points corresponding to the level of the pilot frequency start measurement threshold to the user equipment, and determine whether to control the user equipment to execute pilot frequency switching according to the measurement result corresponding to the measurement configuration information returned by the user equipment.
Optionally, the apparatus further comprises: the pilot frequency threshold measurement configuration module 30, the pilot frequency threshold measurement configuration module 30 is adapted to:
determining a plurality of pilot frequency points corresponding to a preset switching event;
dividing a plurality of pilot frequency points into a plurality of levels; wherein each level comprises at least one pilot frequency point;
and respectively configuring a pilot frequency start-up threshold corresponding to each level.
Optionally, the inter-frequency threshold configuration module 30 is further adapted to:
respectively storing the pilot frequency start-up measurement threshold corresponding to each level and at least one pilot frequency point corresponding to each level in a preset configuration table in an associated manner;
the pilot frequency point determination module 33 is adapted to: and determining a pilot frequency point which is configured in advance and corresponds to the level of the pilot frequency start measuring threshold according to a preset configuration table.
Optionally, the inter-frequency threshold configuration module 30 is adapted to:
and dividing according to the capacity layer or the covering layer of each pilot frequency point and/or the covering condition of each pilot frequency point.
Optionally, the inter-frequency threshold configuration module 30 is adapted to:
and configuring that the pilot frequency start-up threshold corresponding to the level of the pilot frequency point of the capacity layer is higher than the pilot frequency start-up threshold corresponding to the level of the pilot frequency point of the covering layer.
Optionally, the inter-frequency handover control module 34 is adapted to:
when a measurement result corresponding to the measurement configuration information returned by the user equipment meets a preset switching condition, executing pilot frequency switching according to a preset switching event;
and when the measurement result corresponding to the measurement configuration information returned by the user equipment does not accord with the preset switching condition, continuing to execute the step of receiving the pilot frequency measurement report sent by the user equipment after the user equipment judges that the pilot frequency measurement starting condition is met according to the pilot frequency measurement starting threshold.
Optionally, the apparatus is applied to a long term evolution network.
The specific structure and operation principle of each module described above may refer to the description of the corresponding part in the method embodiment, and are not described herein again.
Example four
An embodiment of the present application provides a non-volatile computer storage medium, where the computer storage medium stores at least one executable instruction, and the computer executable instruction may execute the inter-frequency handover method in any method embodiment described above. The executable instructions may be specifically configured to cause a processor to perform respective operations corresponding to the above-described method embodiments.
EXAMPLE five
Fig. 4 is a schematic structural diagram of an electronic device according to a fifth embodiment of the present invention, and the specific embodiment of the present invention does not limit the specific implementation of the electronic device.
As shown in fig. 4, the electronic device may include: a processor (processor)402, a Communications Interface 406, a memory 404, and a Communications bus 408.
Wherein:
the processor 402, communication interface 406, and memory 404 communicate with each other via a communication bus 408.
A communication interface 406 for communicating with network elements of other devices, such as clients or other servers.
The processor 402 is configured to execute the program 410, and may specifically perform relevant steps in the above-described embodiment of the inter-frequency handover method.
In particular, program 410 may include program code comprising computer operating instructions.
The processor 402 may be a central processing unit CPU or an application Specific Integrated circuit asic or one or more Integrated circuits configured to implement embodiments of the present invention. The electronic device comprises one or more processors, which can be the same type of processor, such as one or more CPUs; or may be different types of processors such as one or more CPUs and one or more ASICs.
And a memory 404 for storing a program 410. The memory 404 may comprise high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.
The program 410 may specifically be configured to enable the processor 402 to perform the respective operations in the above-described method embodiments.
The algorithms and displays presented herein are not inherently related to any particular computer, virtual machine, or other apparatus. Various general purpose systems may also be used with the teachings herein. The required structure for constructing such a system will be apparent from the description above. Moreover, the present invention is not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention as described herein, and any descriptions of specific languages are provided above to disclose the best mode of the invention.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
The various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components in a voice input information based lottery system according to embodiments of the present invention. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
Claims (10)
1. An inter-frequency handover method, comprising:
sending a plurality of pre-configured pilot frequency start-up measurement thresholds of different levels to user equipment, so that the user equipment can judge whether a pilot frequency start-up measurement condition is met or not according to each pilot frequency start-up measurement threshold;
receiving a pilot frequency measurement report sent by the user equipment after the user equipment judges that the pilot frequency start-up measurement condition is met according to the pilot frequency start-up measurement threshold;
according to the level of the pilot frequency start measuring threshold contained in the pilot frequency measuring report, determining a pilot frequency point which is configured in advance and corresponds to the level of the pilot frequency start measuring threshold;
and sending the pre-configured measurement configuration information of the pilot frequency points corresponding to the level of the pilot frequency starting measurement threshold to the user equipment, and determining whether to control the user equipment to execute pilot frequency switching according to a measurement result which is returned by the user equipment and corresponds to the measurement configuration information.
2. The method of claim 1, wherein prior to performing the method, further comprising:
determining a plurality of pilot frequency points corresponding to a preset switching event;
dividing the pilot frequency points into a plurality of levels; wherein each level comprises at least one pilot frequency point;
and respectively configuring a pilot frequency start-up threshold corresponding to each level.
3. The method of claim 2, wherein after configuring, for each level, a pilot frequency start-up threshold corresponding to the level, respectively, further comprises:
respectively storing the pilot frequency start-up measurement threshold corresponding to each level and at least one pilot frequency point corresponding to each level in a preset configuration table in an associated manner;
the determining the pre-configured pilot frequency points corresponding to the level of the pilot frequency start measurement threshold includes: and determining a pre-configured pilot frequency point corresponding to the level of the pilot frequency start measurement threshold according to the preset configuration table.
4. The method according to claim 2 or 3, wherein the dividing the plurality of pilot frequency bins into a plurality of levels comprises:
and dividing according to the capacity layer or the covering layer of each pilot frequency point and/or the covering condition of each pilot frequency point.
5. The method of claim 4, wherein the configuring the inter-frequency threshold corresponding to the level comprises:
and configuring that the pilot frequency start-up threshold corresponding to the level of the pilot frequency point of the capacity layer is higher than the pilot frequency start-up threshold corresponding to the level of the pilot frequency point of the covering layer.
6. The method of claim 1, wherein the determining whether to control the ue to perform inter-frequency handover according to the measurement result corresponding to the measurement configuration information returned by the ue comprises:
when the measurement result corresponding to the measurement configuration information returned by the user equipment meets a preset switching condition, executing pilot frequency switching according to a preset switching event;
and when the measurement result corresponding to the measurement configuration information returned by the user equipment does not accord with a preset switching condition, continuing to execute the step of receiving the pilot frequency measurement report sent after the user equipment judges that the pilot frequency measurement starting condition is met according to the pilot frequency starting threshold.
7. The method of claim 1, wherein the method is applied to a long term evolution network.
8. An inter-frequency handover apparatus, comprising:
the pilot frequency starting measurement threshold sending module is suitable for sending a plurality of pilot frequency starting measurement thresholds with different levels configured in advance to the user equipment so that the user equipment can judge whether the pilot frequency starting measurement conditions are met according to each pilot frequency starting measurement threshold;
a pilot frequency measurement report receiving module, adapted to receive a pilot frequency measurement report sent after the user equipment determines that a pilot frequency start-up condition is met according to the pilot frequency start-up threshold;
the pilot frequency point determining module is suitable for determining a pre-configured pilot frequency point corresponding to the level of the pilot frequency start measuring threshold according to the level of the pilot frequency start measuring threshold contained in the pilot frequency measuring report;
and the pilot frequency switching control module is suitable for sending the pre-configured measurement configuration information of the pilot frequency points corresponding to the level of the pilot frequency starting measurement threshold to the user equipment, and determining whether to control the user equipment to execute pilot frequency switching according to a measurement result which is returned by the user equipment and corresponds to the measurement configuration information.
9. An electronic device, comprising: the system comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete mutual communication through the communication bus;
the memory is used for storing at least one executable instruction, and the executable instruction causes the processor to execute the operation corresponding to the inter-frequency switching method according to any one of claims 1-7.
10. A computer storage medium having at least one executable instruction stored therein, the executable instruction causing a processor to perform operations corresponding to the inter-frequency handover method according to any one of claims 1 to 7.
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