CN111314930B - Beam selection method, device, terminal and storage medium - Google Patents
Beam selection method, device, terminal and storage medium Download PDFInfo
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- CN111314930B CN111314930B CN202010122938.6A CN202010122938A CN111314930B CN 111314930 B CN111314930 B CN 111314930B CN 202010122938 A CN202010122938 A CN 202010122938A CN 111314930 B CN111314930 B CN 111314930B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
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- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
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- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
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Abstract
The embodiment of the invention discloses a beam selection method, a device, a terminal and a storage medium. The method comprises the following steps: acquiring a first signal intensity of a current wave beam and a second signal intensity of a neighboring cell; judging whether the second signal intensity is continuously larger than the sum of the first signal intensity and the configuration threshold value in the first preset time period; if not, acquiring the third signal intensity of the regional beam in the cell to which the current beam belongs; judging whether the third signal intensity is continuously greater than the sum of the first signal intensity and a preset hysteresis value in a second preset time period, wherein the second preset time period and the preset hysteresis value are determined by the first signal intensity and a preset threshold value; if yes, determining the regional beam corresponding to the third signal intensity as the target beam, and switching the current beam into the target beam. The method solves the problems of unstable signal intensity, frequent beam switching, serious rapid beam attenuation, untimely beam switching and the like when the idle 5G terminal selects the beam in the prior art.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a beam selection method, a device, a terminal, and a storage medium.
Background
Beamforming (Beamforming), also known as Beamforming, spatial filtering, is a signal processing technique that uses an array of sensors to directionally transmit and receive signals. The beamforming technique allows signals at certain angles to obtain constructive interference and signals at other angles to obtain destructive interference by adjusting parameters of the fundamental elements of the phased array. Beamforming can be used for both signal transmitting and signal receiving terminals. In 5G networks, massive beam-forming is the dominant technology, especially when terminals and networks communicate in the millimeter frequency band. When the terminal is in the 5G network connection state, the selection of the beam is determined by the network, but when the terminal is in the IDLE state, the 3GPP specifications do not define how the terminal in the IDLE state (IDLE state) evaluates the selection of the best beam camping within the cell, and the beam evaluation and selection within the cell is entirely implemented by the terminal itself. The conventional implementation method at present is that the physical layer of the terminal measures which beam signal is strongest, and the beam with the strongest tangential signal or the beam selected during cell reselection is not switched when the cell reselection is occupied all the time after the cell selection or the cell reselection is performed, until the adjacent cell reselection condition is reached, and then the beam is reselected to another adjacent cell. In order to solve the problem that the intensity of a beam signal is unstable when a single beam is occupied and not switched when a 5G terminal in an idle state selects the beam, and the problem that the beam is frequently switched when the beam with the strongest tangential signal is measured when the beam with the strongest beam signal is the strongest.
Disclosure of Invention
In view of this, the present invention provides a beam selection method, which enables to select a beam with stable signal strength in the idle state of the terminal.
In order to solve the technical problems, the invention adopts the following technical scheme:
in one embodiment, the present invention provides a beam selection method, including:
acquiring a first signal intensity of a current wave beam and a second signal intensity of a neighboring cell;
judging whether the second signal intensity is continuously larger than the sum of the first signal intensity and a configuration threshold value in a first preset duration;
if not, acquiring third signal intensity of a regional beam in the cell to which the current beam belongs;
judging whether the third signal intensity is continuously greater than the sum of the first signal intensity and a preset hysteresis value in a second preset duration, wherein the second preset duration and the preset hysteresis value are determined by the first signal intensity and a preset threshold value;
if yes, determining the beam in the area corresponding to the third signal intensity as a target beam, and switching the current beam into the target beam.
In one embodiment, the present invention provides a beam selection apparatus, including:
the first signal intensity acquisition module is used for acquiring the first signal intensity of the current wave beam and the second signal intensity of the adjacent wave beam;
The reselection judging module is used for judging whether the second signal strength is continuously larger than the sum of the first signal strength and a configuration threshold value in a first preset duration;
the second signal intensity obtaining module is used for obtaining third signal intensity of the regional beam in the cell to which the current beam belongs if the second signal intensity is continuously larger than the sum of the first signal intensity and the configuration threshold value within the first preset time period;
the in-zone reselection judging module is used for judging whether the third signal intensity is continuously larger than the sum of the first signal intensity and a preset hysteresis value in a second preset time length, and the second preset time length and the preset hysteresis value are determined by the first signal intensity and a preset threshold value;
and the beam switching module is used for determining the regional beam corresponding to the third signal intensity as a target beam and switching the current beam into the target beam if the third signal intensity is continuously larger than the sum of the first signal intensity and a preset hysteresis value within a second preset duration.
In one embodiment, the present invention provides a communication terminal, including:
one or more processors;
a storage means for storing one or more programs;
The one or more programs, when executed by the one or more processors, enable the one or more processors to implement a beam selection method as described above.
In one embodiment, the present invention provides a computer readable storage medium storing a computer program comprising program instructions that when executed implement the beam selection method described above.
The beam selection method provided by the invention has the advantages that the beam switching is timely, the beam with stable intensity can be kept at all times, and the problems of unstable signal intensity, frequent beam switching, serious rapid beam attenuation, untimely beam switching and the like in the prior art when the idle 5G terminal selects the beam are solved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following description will briefly explain the drawings required to be used in the embodiments or the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained according to the provided drawings without any inventive effort for a person skilled in the art.
Fig. 1 is a flow chart of a beam selection method according to an embodiment of the present invention;
FIG. 2 is a flow chart of a beam selection method provided by an embodiment of the present invention;
FIG. 3 is a flow chart of a beam selection method provided by an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a beam selection device according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an intra-area reselection determination module according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a terminal according to a fourth embodiment of the present invention.
Detailed Description
The technical solutions in the implementation of the present application are clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the specific embodiments described herein are merely illustrative of, and not restrictive on, some, but not all embodiments of the application. It should be further noted that, based on the embodiments described herein, all other embodiments that can be obtained by a person having ordinary skill in the art without making any inventive effort are within the scope of the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Furthermore, the terms "first," "second," and the like, may be used herein to describe various directions, acts, steps, or elements, etc., but these directions, acts, steps, or elements are not limited by these terms. These terms are only used to distinguish one direction, action, step or element from another direction, action, step or element. For example, a first region may be referred to as a second region, and similarly, a second region may be referred to as a first region, without departing from the scope of the invention. Both the first region and the second region are regions, but they are not the same region. The terms "first," "second," and the like, are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. It should be noted that when one portion is referred to as being "fixed to" another portion, it may be directly on the other portion or there may be a portion in the middle. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and do not represent the only embodiment.
Before discussing exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart depicts steps as a sequential process, many of the steps may be implemented in parallel, concurrently, or with other steps. Furthermore, the order of the steps may be rearranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figures. The processes may correspond to methods, functions, procedures, subroutines, and the like.
Referring to fig. 1, in one embodiment, a beam selection method is provided, which may be applicable to various terminals capable of beamforming. Specifically, the method comprises the following steps:
s110, acquiring the first signal strength of the current wave beam and the second signal strength of the adjacent cell.
The 5G handover procedure takes LTE (Long Term Evolution ) as a direct scheme, and the beamforming technology adopted in 5G introduces multiple beams, that is, each terminal needs to use a specific beam in a cell to realize communication, and the terminal needs to monitor signal quality of a serving cell and a neighboring cell at any time in an idle mode or a connected mode to select a most suitable cell residence, so that measurement on the beam nearby is needed during cell handover.
Specifically, before the beam switching between the cells is performed, the bottom layer (physical layer) of the terminal will detect the beam signal intensity around the terminal, and the signal intensity between the cells needs to be compared during the switching, so the first signal intensity of the first beam where the terminal currently resides and the second signal intensity of the neighboring cell are obtained in step S110, where the first signal intensity represents the signal intensity of the cell where the terminal currently resides, and the second signal intensity represents the signal intensity of the other cell adjacent to the cell where the terminal currently resides, where the second signal intensity may be one or more, and specifically, the second signal intensity is determined by the actual situation and there are a plurality of cells.
More specifically, in this embodiment, the signal strength measurement object is an SSB beam, and the bottom layer is based on the signal strength of the beam in the neighboring cell when measuring the second signal strength of the neighboring cell, and the specific process includes:
and acquiring a configuration threshold value, a configuration quantity value and the signal intensity of each wave beam in the first adjacent cell.
The configured threshold value is an absThreshSS-blocksConsolitation parameter, the configured quantity value is an nrofSS-blocksToAverage parameter, both of which are issued by a network and affect cell reselection, and the first neighbor cell is a determination process for distinguishing and describing signal intensity (second signal intensity) of a single neighbor cell, and the specific influence process is as follows.
If the configuration threshold value and the configuration quantity value are obtained only one, or the signal intensity of each wave beam in the first adjacent cell is not larger than the configuration threshold value, the maximum signal intensity in the first adjacent cell is used as the second signal intensity of the first adjacent cell, if the two conditions are not met, a plurality of signal intensities are selected in descending order from the maximum signal intensity in the first adjacent cell to be used as the second signal intensity of the first adjacent cell, and the number of the plurality of signal intensities is equal to the configuration quantity value.
When one of the absThreshSS-BlocksConsodation parameter and the nrofSS-BlocksToAverage parameter is not configured, taking the highest signal intensity of the signal intensities of all beams in the first neighbor as the signal intensity of the first neighbor; when the two parameters are configured, but the signal intensity of all the beams in the first neighbor cell is not more than the absthreshs-blockscondesis parameter, the highest signal intensity in the signal intensity of all the beams in the first neighbor cell is still taken as the signal intensity of the first neighbor cell; if the two parameters are configured, and the signal intensity of all beams in the first neighbor is greater than the absThreshSS-blockscondensation parameter, selecting nrofSS-blocksoavage highest values higher than the absThreshSS-blockscondensation parameter from the signal intensity of all beams in the first neighbor, and taking the average technology as the signal intensity of the first neighbor.
The above-described signal strength determination process for only one neighbor cell (first neighbor cell), the signal strength of each neighbor cell is determined by the same procedure as described above.
S120, judging whether the second signal strength is continuously greater than the sum of the first signal strength and a configuration threshold value in a first preset duration.
In step S120, a neighbor cell reselection condition may be a common priority determination, a threshold determination, etc., and in this embodiment, a neighbor cell reselection condition based on a configuration threshold is adopted, and when the neighbor cell reselection condition is determined to be satisfied according to the second signal strength and the first signal strength, if the determination condition is that whether the second signal strength is continuously greater than the sum of the first signal strength and the configuration threshold within a first preset duration, the configuration threshold is an absthreshs-blocksconsition parameter.
And S130, if not, acquiring the third signal intensity of the regional beam in the cell to which the current beam belongs.
The beam selection method provided in this embodiment is mainly aimed at the beam switching situation when the idle terminal does not meet the neighbor cell reselection condition, when the terminal is in the idle state, the RRC layer (radio resource control layer, radio Resource Control) of the terminal evaluates the signal strength reported by the bottom layer, unlike the neighbor cell reselection, where the switching needs to be performed in the current serving cell, and the evaluation in step S140 aims at the regional beam in the current serving cell, so that it is necessary to obtain the third signal strength of the regional beam in the cell to which the current beam belongs (i.e., the current serving cell).
And S140, judging whether the third signal intensity is continuously larger than the sum of the first signal intensity and a preset hysteresis value in a second preset duration, wherein the second preset duration and the preset hysteresis value are determined by the first signal intensity and a preset threshold value.
After the third signal strength of the area beam is obtained, it is further determined how to select a suitable area beam, specifically: judging whether the beams with the third signal intensity exceeding the preset hysteresis value and with the duration time longer than the preset duration time when the third signal intensity exceeding the first signal intensity reaches the preset hysteresis value exist in the beams in the areas according to the first signal intensity and the third signal intensity, if so, indicating that the beams meeting the two conditions are larger and more stable than the signal intensity of the beam (the current beam) where the terminal currently resides, and if not, indicating that no better selection exists in the current service cell than the beam where the terminal currently resides.
In this embodiment, further consideration is given to that when the first signal strength of the current beam where the terminal resides is relatively high, the actual requirement can be met, so that the beam switching requirement is not high, and the beam switching can be appropriately adjusted to avoid frequent beam switching, when the first signal strength of the current beam where the terminal resides is relatively low, the actual requirement cannot be met, so that a better beam needs to be quickly selected, and the switching speed can be appropriately accelerated for the signal strength.
And S150, if so, determining the regional beam corresponding to the third signal intensity as a target beam, and switching the current beam into the target beam.
When the third signal strength is greater than the sum of the first signal strength and the preset hysteresis value and the duration of the third signal strength greater than the sum of the first signal strength and the preset hysteresis value is greater than the second preset value, it is indicated that the beam corresponding to the third signal strength is a better beam than the current beam, and in order to distinguish from the foregoing names, in this embodiment, the beam in the beam corresponding to the area and meeting both conditions is called the target beam, and after the target beam is found, the terminal switches to the target beam and performs subsequent communication based on the target beam.
More specifically, in some embodiments, as shown in fig. 2, after determining in step S120 whether the second signal strength is continuously greater than the sum of the first signal strength and the configured threshold value in the first preset duration, a neighbor cell reselection process when a neighbor cell reselection condition is satisfied is further included, which specifically includes:
and S160, if so, taking the neighbor cell corresponding to the second signal intensity as a target neighbor cell, and switching the service cell to the target neighbor cell.
When the neighbor cell reselection condition is met, the terminal needs to switch the serving cell to finish neighbor cell reselection, namely, the serving cell is switched to the neighbor cell corresponding to the second signal strength meeting the neighbor cell reselection condition.
S160, selecting a target neighbor cell beam from the target neighbor cell according to a preset rule, and switching the current beam to the target neighbor cell beam.
After the serving cell of the terminal is switched to the target neighbor cell, the beam where the terminal resides is also changed, and the beam where the terminal currently resides is switched to the beam in the target neighbor cell, and how to select the beam in the target neighbor cell specifically can be according to the preset rule of the general neighbor cell reselection process.
Further, in some cases, there may be a plurality of beams that simultaneously satisfy the above two conditions in the multiple zone beams, and correspondingly in some embodiments, when there is a plurality of zone beams that satisfy the sum of the first signal strength and the preset hysteresis value for a second preset duration and the third signal strength is continuously greater than the sum of the first signal strength and the preset hysteresis value, one zone beam with the largest signal strength in the plurality of zone beams is selected as the target beam.
When judging that the third signal intensity in the second preset time period is not more than the sum of the first signal intensity and the preset hysteresis value in the regional wave beams, the terminal can continue to stay in the current wave beam.
The embodiment provides a beam selection method, which is characterized in that compared with the method which only performs beam switching according to the intensity of the beam, the beam switching is performed only when the beam of a target area with enough and stable signal intensity is judged, the beam switching frequency is lower, the signal intensity of the switched target beam is stable, and compared with the method which occupies a single beam and is not switched after cell reselection, the beam switching is timely, the beam with stable intensity can be kept at all times, and the problems of unstable signal intensity, frequent beam switching, serious rapid beam attenuation, untimely beam switching and the like in the selection of the beam by an idle 5G terminal in the prior art are solved.
In an embodiment, a part of the procedures of the beam selection method are further explained and illustrated based on the previous embodiment, and specifically as shown in fig. 3, the beam selection method provided in this embodiment specifically includes:
s200, setting a preset hysteresis value and/or a preset duration according to a user instruction.
The preset hysteresis value and the preset duration are two user-defined parameters for judging how to switch the wave beams, and the user can set corresponding specific values according to different actual conditions.
S210, acquiring the first signal strength of the current wave beam and the second signal strength of the adjacent cell.
S220, judging whether the second signal strength is continuously greater than the sum of the first signal strength and a configuration threshold value in a first preset duration.
And S230, if not, acquiring the third signal intensity of the regional beam in the cell to which the current beam belongs.
If the neighbor cell reselection condition is not met, whether a better beam exists in the current serving cell for selection is needed to be judged, specifically, whether the third signal strength is continuously greater than the sum of the first signal strength and a preset hysteresis value in a second preset duration is judged, the second preset duration and the preset hysteresis value are determined by the first signal strength and a preset threshold, in this embodiment, the step is specifically explained as step S240-S270, wherein the preset threshold comprises a first preset threshold and a second preset threshold, the first preset threshold is a difference between the configuration threshold and the custom value subtracted from the first preset threshold, the second preset threshold is a sum of the configuration threshold and the custom value removed from the second preset threshold, and the configuration threshold is a threshold issued by a network.
S240, judging whether the first signal strength is smaller than the first preset threshold value.
For the first beam where the terminal currently resides, in this embodiment, the beam switching process is performed according to the specific signal strength distinction: the first preset threshold and the second preset threshold correspond to different preset hysteresis values and different preset durations respectively, beam switching is performed when the first signal intensity of the current beam is smaller than the first preset threshold according to the preset hysteresis value and the preset duration corresponding to the first preset threshold, and beam switching is performed when the first signal intensity is larger than the second preset threshold according to the preset hysteresis value and the preset duration corresponding to the second preset threshold. Specifically, the first preset threshold and the second preset threshold may be different according to different actual situations. In this embodiment, the first preset threshold is smaller than the second preset threshold.
S250, if the first signal strength is smaller than the first preset threshold, judging whether the third signal strength is continuously larger than the sum of the first signal strength and a preset hysteresis value corresponding to the first preset threshold in a preset duration corresponding to the first preset threshold.
And S260, if the first signal strength is not smaller than the first preset threshold value, judging whether the first signal strength is larger than a second preset threshold value.
S270, if the first signal strength is greater than the second preset threshold, judging whether the third signal strength is continuously greater than the sum of the first signal strength and the preset hysteresis value corresponding to the second preset threshold within the preset duration corresponding to the second preset threshold.
Of course, the first signal strength is not smaller than the first preset threshold and is larger than the second preset threshold, but is larger than or equal to the first preset threshold and is smaller than or equal to the second preset threshold, and in this case, no judgment is made between the third signal strength and the first signal strength, that is, the judgment result of whether the third signal strength is continuously larger than the sum of the first signal strength and the preset hysteresis value in the second preset duration is no.
According to analysis, when the first signal strength is larger, the preset hysteresis value and the preset duration value as the beam switching judgment standard should be larger to avoid frequent beam switching, which is considered that the larger the first signal strength is, the actual requirement can be met, and the switching signal brings inconvenience to normal operation, so that frequent beam switching needs to be avoided as much as possible, and the beam switching judgment standard needs to be improved, otherwise, when the first signal strength is smaller, the influence of the signal loudness on normal operation is larger, so that the signal strength is required to be switched to a beam with larger and more stable signal strength, and the beam switching judgment standard needs to be reduced. That is, the preset hysteresis value corresponding to the first preset threshold is greater than the preset hysteresis value corresponding to the second preset threshold, the preset time period corresponding to the first preset threshold is greater than the preset time period corresponding to the second preset threshold, and in an exemplary manner, in step S200, the preset hysteresis value corresponding to the first preset threshold may be set to be 6db, the preset hysteresis value corresponding to the second preset threshold may be set to be 3db, the preset time period corresponding to the first preset threshold is 1000ms, and the preset time period corresponding to the second preset threshold is 500ms.
Likewise, in some cases there may be multiple beams in the zone beam that satisfy both the hysteresis value and the duration, and correspondingly in some embodiments, the zone beam in which the signal strength is greatest is selected as the target beam.
And S280, if so, determining the regional beam corresponding to the third signal intensity as a target beam, and switching the current beam into the target beam.
When the target beam is determined, the terminal switches the current beam to the target beam to complete beam switching.
And S290, if not, the terminal continues to reside in the current wave beam.
If there is no suitable target beam (it may not meet the hysteresis and duration requirements in steps S250 and S270, or it may be that the first signal strength does not meet the preset threshold requirements in steps S230 and S250, i.e. the first signal strength is not greater than the first preset threshold nor is not less than the second preset threshold), the terminal continues to camp on the current beam until the target beam is found (it may be that the preset hysteresis and second preset duration requirements in steps S250 and S270 are met).
The present embodiment further increases the process of selecting the preset hysteresis value as the beam switching judgment standard and the second preset time length according to different areas of the first signal intensity to complete the beam switching based on the previous embodiment, and further avoids the problems of frequent beam switching, unstable signal intensity, untimely beam switching, etc. caused by unreasonable hysteresis value and duration setting when the signal intensity of the first beam is different.
Fig. 4 is a schematic structural diagram of a beam selection device according to an embodiment of the present invention, and as shown in fig. 4, the beam selection device 300 includes:
a first signal strength obtaining module 310, configured to obtain a first signal strength of a current beam and a second signal strength of a neighboring beam.
In one embodiment, the intensity acquisition module 310 includes:
the signal intensity acquisition unit of the adjacent cell is used for acquiring a configuration threshold value, a configuration quantity value and the signal intensity of each wave beam in the first adjacent cell, if the configuration threshold value and the configuration quantity value are both acquired only one, or the signal intensity of each wave beam in the first adjacent cell is not larger than the configuration threshold value, the maximum signal intensity in the first adjacent cell is used as the second signal intensity of the first adjacent cell, if the two conditions are not satisfied, a plurality of signal intensities are selected in descending order from the maximum signal intensity in the first adjacent cell to be used as the second signal intensity of the first adjacent cell, and the number of the plurality of signal intensities is equal to the configuration quantity value.
The configuration threshold value is an absThreshSS-BlocksConsodate parameter, the configuration quantity value is an nrofSS-BlocksToAverage parameter, the two parameters are issued by a network, and when one of the absThreshSS-BlocksConsodate parameter and the nrofSS-BlocksToAverage parameter is not configured, the highest signal intensity in the signal intensities of all beams in the first neighbor is taken as the signal intensity of the first neighbor; when the two parameters are configured, but the signal intensity of all the beams in the first neighbor cell is not more than the absthreshs-blockscondesis parameter, the highest signal intensity in the signal intensity of all the beams in the first neighbor cell is still taken as the signal intensity of the first neighbor cell; if the two parameters are configured, and the signal intensity of all beams in the first neighbor is greater than the absThreshSS-blockscondensation parameter, selecting nrofSS-blocksoavage highest values higher than the absThreshSS-blockscondensation parameter from the signal intensity of all beams in the first neighbor, and taking the average technology as the signal intensity of the first neighbor.
The reselection judging module 320 is configured to judge whether the second signal strength is continuously greater than a sum of the first signal strength and a configuration threshold value within a first preset duration.
And the second signal strength obtaining module 330 is configured to obtain a third signal strength of a regional beam in the cell to which the current beam belongs if the second signal strength is not continuously greater than the sum of the first signal strength and the configured threshold value within a first preset duration.
The intra-area reselection determination module 340 is configured to determine whether the third signal strength is continuously greater than a sum of the first signal strength and a preset hysteresis value within a second preset duration, where the second preset duration and the preset hysteresis value are determined by the first signal strength and a preset threshold.
Optionally, in some embodiments, the apparatus further comprises:
and the neighbor cell reselection module is used for taking a neighbor cell corresponding to the second signal strength as a target neighbor cell and switching a service cell to the target neighbor cell if the second signal strength is continuously larger than the sum of the first signal strength and the configuration threshold value within a first preset time.
And the neighbor wave beam switching module is used for selecting a target neighbor wave beam from the target neighbor according to a preset rule and switching the current wave beam to the target neighbor wave beam.
Optionally, in an embodiment, the preset threshold includes a first preset threshold and a second preset threshold, where the first preset threshold is a difference between the configured threshold and the custom value subtracted from the first preset threshold, the second preset threshold is a sum of the configured threshold and the custom value, and the configured threshold is a threshold issued by a network, as shown in fig. 5, and the intra-area reselection determining module 340 includes:
a first threshold value judging unit 341, configured to judge whether the first signal strength is less than the first preset threshold value;
a first intra-area reselection determination unit 342, configured to determine whether the third signal strength is continuously greater than a sum of the first signal strength and a preset hysteresis value corresponding to the first preset threshold within a preset duration corresponding to the first preset threshold if the first signal strength is less than the first preset threshold;
a second threshold judging unit 343, configured to judge whether the first signal strength is greater than a second preset threshold if the first signal strength is not less than the first preset threshold;
and a second intra-area reselection judging unit 344, configured to judge whether the third signal strength is continuously greater than a sum of the preset hysteresis values corresponding to the first signal strength and the second preset threshold within a preset duration corresponding to the second preset threshold if the first signal strength is greater than the second preset threshold.
When the first signal strength is not greater than the first preset threshold value and is not less than the second preset threshold value, the corresponding comparison process of the third signal strength and the first signal strength is not performed, namely the requirements are considered to be unsatisfied, and the switching of the beams in the areas is not performed.
And a beam switching module 350, configured to determine, as a target beam, a beam in a region corresponding to the third signal strength if the third signal strength is continuously greater than the sum of the first signal strength and a preset hysteresis value within a second preset duration, and switch the current beam to the target beam.
More specifically, when the third signal intensity in the second preset duration is not greater than the sum of the first signal intensity and the preset hysteresis value continuously in the zone beams, that is, no suitable zone beam is considered to be switched, the terminal continues to reside in the current beam at this time, and more specifically, when the first signal intensity is not greater than the first preset threshold value and not less than the second preset threshold value, the terminal also continues to reside in the current beam.
The beam selection apparatus provided in one embodiment further includes:
and the numerical value setting module is used for determining a preset hysteresis value and/or a preset duration according to the user instruction.
The embodiment provides a beam selection device, which can keep the beam with stable intensity at any time in time, and solves the problems of unstable signal intensity, frequent beam switching, serious fast attenuation, untimely beam switching and the like in the prior art when an idle 5G terminal selects the beam.
Fig. 6 is a schematic structural diagram of a communication terminal 400 according to an embodiment of the present invention, where, as shown in fig. 6, the terminal includes a storage device 410 and a processor 420, and the number of the processors 420 in the communication terminal 400 may be one or more, and one processor 420 is taken as an example in fig. 6. The memory device 410, the processor 420 in the communication terminal 400 may be connected by a bus or other means, which is illustrated in fig. 6 as a bus connection.
The storage device 410 is used as a computer readable storage medium, and may be used to store a software program, a computer executable program, and modules, such as program instructions/modules corresponding to the beam selection method in the embodiment of the present invention (for example, the first signal strength obtaining module 310, the reselection judging module 320, the second signal strength obtaining module 330, the intra-area reselection judging module 340, and the beam switching module 350 in the beam selection device). The processor 420 performs various functional applications of the terminal and data processing, i.e., implements the beam selection method described above, by running software programs, instructions and modules stored in the storage device 410.
Wherein the processor 420 is configured to execute a computer executable program stored in the storage device 410 to implement the following steps: step S110, acquiring the first signal intensity of the current wave beam and the second signal intensity of the adjacent cell; step S120, judging whether the second signal intensity is continuously larger than the sum of the first signal intensity and a configuration threshold value in a first preset duration; step S130, if not, obtaining the third signal intensity of the regional beam in the cell to which the current beam belongs; step S140, judging whether the third signal intensity is continuously greater than the sum of the first signal intensity and a preset hysteresis value within a second preset duration, where the second preset duration and the preset hysteresis value are determined by the first signal intensity and a preset threshold; and step S150, if yes, determining the beam in the area corresponding to the third signal intensity as a target beam, and switching the current beam into the target beam.
In one embodiment, the processor 420, when executing the computer program, may also implement the following steps:
s200, determining a preset hysteresis value and/or a preset duration according to a user instruction.
S210, acquiring the first signal strength of the current wave beam and the second signal strength of the adjacent cell.
S220, judging whether the second signal strength is continuously greater than the sum of the first signal strength and a configuration threshold value in a first preset duration.
And S230, if so, taking the neighbor cell corresponding to the second signal strength as a target neighbor cell, and switching the service cell to the target neighbor cell.
S240, selecting a target neighbor cell beam from the target neighbor cell according to a preset rule, and switching the current beam to the target neighbor cell beam.
And S250, if not, acquiring the third signal intensity of the regional beam in the cell to which the current beam belongs.
S260, judging whether the first signal strength is smaller than the first preset threshold value.
S270, if the first signal strength is smaller than the first preset threshold, judging whether the third signal strength is continuously larger than the sum of the first signal strength and a preset hysteresis value corresponding to the first preset threshold in a preset time period corresponding to the first preset threshold.
S280, if the first signal strength is not smaller than the first preset threshold, judging whether the first signal strength is larger than a second preset threshold.
And S290, if the first signal strength is greater than the second preset threshold, judging whether the third signal strength is continuously greater than the sum of the first signal strength and the preset hysteresis value corresponding to the second preset threshold in the preset duration corresponding to the second preset threshold.
S211, if yes, determining the regional beam corresponding to the third signal intensity as a target beam, and switching the current beam into the target beam.
And S212, if not, the terminal continues to reside in the current wave beam.
Of course, the communication terminal provided in the embodiment of the present invention is not limited to the method operations described above, and may also perform the related operations in the beam selection method provided in any embodiment of the present invention.
The storage device 410 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for functions; the storage data area may store data created according to the use of the terminal, etc. Further, the storage 410 may include a high-speed random access storage device, and may also include a non-volatile storage device, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the storage device 410 may further include a storage device remotely located with respect to the processor 420, which may be connected to the terminal through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The embodiment provides a communication terminal, compared with the communication terminal which only performs beam switching according to the beam intensity, the beam switching is performed only when a target beam with enough and stable signal intensity is judged, the beam switching frequency is lower, the signal intensity of the switched target beam is stable, compared with the communication terminal which occupies a single beam after cell reselection and does not switch, the communication terminal provided by the embodiment has the advantages that the beam switching is timely, the beam with stable intensity can be kept all the time, and the problems that the signal intensity is unstable, the beam switching is frequent, the beam fast fading is serious, the beam switching is not timely and the like when the 5G terminal in an idle state selects the beam in the prior art are solved.
Example five
A fifth embodiment of the present invention also provides a storage medium containing computer-executable instructions, which when executed by a computer processor, are for performing a beam selection method comprising:
acquiring a first signal intensity of a current wave beam and a second signal intensity of a neighboring cell;
judging whether the second signal intensity is continuously larger than the sum of the first signal intensity and a configuration threshold value in a first preset duration;
if not, acquiring third signal intensity of a regional beam in the cell to which the current beam belongs;
Judging whether the third signal intensity is continuously greater than the sum of the first signal intensity and a preset hysteresis value in a second preset duration, wherein the second preset duration and the preset hysteresis value are determined by the first signal intensity and a preset threshold value;
if yes, determining the beam in the area corresponding to the third signal intensity as a target beam, and switching the current beam into the target beam.
Of course, the storage medium containing the computer executable instructions provided in the embodiments of the present invention is not limited to the method operations described above, and may also perform the related operations in the beam selection method provided in any embodiment of the present invention.
The computer readable storage medium provided by the embodiment realizes a beam selection method, timely beam switching and can keep stable-intensity beams all the time, and solves the problems of unstable signal intensity, frequent beam switching, serious rapid beam attenuation, untimely beam switching and the like when an idle 5G terminal selects the beams in the prior art.
In one embodiment, the computer program when executed by the processor further performs the steps of:
s200, determining a preset hysteresis value and/or a preset duration according to a user instruction.
S210, acquiring the first signal strength of the current wave beam and the second signal strength of the adjacent cell.
S220, judging whether the second signal strength is continuously greater than the sum of the first signal strength and a configuration threshold value in a first preset duration.
And S230, if so, taking the neighbor cell corresponding to the second signal strength as a target neighbor cell, and switching the service cell to the target neighbor cell.
S240, selecting a target neighbor cell beam from the target neighbor cell according to a preset rule, and switching the current beam to the target neighbor cell beam.
And S250, if not, acquiring the third signal intensity of the regional beam in the cell to which the current beam belongs.
S260, judging whether the first signal strength is smaller than the first preset threshold value.
S270, if the first signal strength is smaller than the first preset threshold, judging whether the third signal strength is continuously larger than the sum of the first signal strength and a preset hysteresis value corresponding to the first preset threshold in a preset time period corresponding to the first preset threshold.
S280, if the first signal strength is not smaller than the first preset threshold, judging whether the first signal strength is larger than a second preset threshold.
And S290, if the first signal strength is greater than the second preset threshold, judging whether the third signal strength is continuously greater than the sum of the first signal strength and the preset hysteresis value corresponding to the second preset threshold in the preset duration corresponding to the second preset threshold.
S211, if yes, determining the regional beam corresponding to the third signal intensity as a target beam, and switching the current beam into the target beam.
And S212, if not, the terminal continues to reside in the current wave beam.
In some cases there may be multiple beams in the neighbor beam that satisfy both the hysteresis value and the duration, and correspondingly in some embodiments, the one with the greatest signal strength is selected as the target neighbor beam.
From the above description of embodiments, it will be clear to a person skilled in the art that the present invention may be implemented by means of software and necessary general purpose hardware, but of course also by means of hardware, although in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, or a network device, etc., including several instructions for causing a computer device (which may be a personal computer, a device, or a network device, etc.) to execute the method according to the embodiments of the present invention.
It should be noted that, in the above-mentioned embodiment of the beam selection device, each unit and module included are only divided according to the functional logic, but not limited to the above-mentioned division, so long as the corresponding functions can be implemented; in addition, the specific names of the functional units are also only for distinguishing from each other, and are not used to limit the protection scope of the present invention.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (10)
1. A method of beam selection, the method comprising:
acquiring a first signal intensity of a current wave beam and a second signal intensity of a neighboring cell;
Judging whether the second signal intensity is continuously larger than the sum of the first signal intensity and a configuration threshold value in a first preset duration;
if not, acquiring third signal intensity of a regional beam in the cell to which the current beam belongs;
judging whether the third signal intensity is continuously greater than the sum of the first signal intensity and a preset hysteresis value in a second preset duration, wherein the second preset duration and the preset hysteresis value are determined by the first signal intensity and a preset threshold value;
if yes, determining the regional beam corresponding to the third signal intensity as a target beam, and switching the current beam into the target beam;
the preset threshold comprises a first preset threshold and a second preset threshold, the first preset threshold is the difference between the configuration threshold and the self-defined value, the second preset threshold is the sum of the configuration threshold and the self-defined value, and the configuration threshold is the threshold issued by the network; the first preset threshold and the second preset threshold correspond to different preset hysteresis values and different preset durations respectively, and the judging whether the third signal strength in the second preset duration is continuously greater than the sum of the first signal strength and the preset hysteresis value comprises the following steps: and performing beam switching when the first signal intensity of the current beam is smaller than the first preset threshold value by using a preset hysteresis value and a preset time length corresponding to the first preset threshold value, and performing beam switching when the first signal intensity is larger than the second preset threshold value by using a preset hysteresis value and a preset time length corresponding to the second preset threshold value.
2. The method of claim 1, wherein after the determining whether the second signal strength is continuously greater than the sum of the first signal strength and the configured threshold value for a first predetermined period of time, further comprises:
if yes, taking the neighbor cell corresponding to the second signal intensity as a target neighbor cell, and switching a service cell to the target neighbor cell;
and selecting a target neighbor cell beam from the target neighbor cell according to a preset rule, and switching the current beam to the target neighbor cell beam.
3. The method of claim 1, wherein determining whether the third signal strength is continuously greater than the sum of the first signal strength and a predetermined hysteresis value for a second predetermined period of time comprises:
judging whether the first signal strength is smaller than the first preset threshold value or not;
if the first signal strength is smaller than the first preset threshold, judging whether the third signal strength is continuously larger than the sum of the first signal strength and a preset hysteresis value corresponding to the first preset threshold in a preset duration corresponding to the first preset threshold;
if the first signal strength is not smaller than the first preset threshold value, judging whether the first signal strength is larger than a second preset threshold value or not;
If the first signal strength is greater than the second preset threshold, judging whether the third signal strength is continuously greater than the sum of the first signal strength and a preset hysteresis value corresponding to the second preset threshold in a preset duration corresponding to the second preset threshold.
4. The method of claim 1, wherein when there are a plurality of zone beams satisfying a sum of the first signal strength and a predetermined hysteresis value for a second predetermined period of time, selecting a zone beam having a maximum signal strength among the plurality of zone beams as a target beam.
5. The method of claim 1, wherein obtaining the second signal strength of the neighbor cell comprises:
acquiring a configuration threshold value, a configuration quantity value and the signal intensity of each wave beam in a first adjacent cell;
if the configuration threshold value and the configuration quantity value are obtained only one, or the signal intensity of each wave beam in the first adjacent cell is not larger than the configuration threshold value, the maximum signal intensity in the first adjacent cell is used as the second signal intensity of the first adjacent cell, if the two conditions are not met, a plurality of signal intensities are selected in descending order from the maximum signal intensity in the first adjacent cell to be used as the second signal intensity of the first adjacent cell, and the number of the plurality of signal intensities is equal to the configuration quantity value.
6. A beam selection apparatus, comprising:
the first signal intensity acquisition module is used for acquiring the first signal intensity of the current wave beam and the second signal intensity of the adjacent wave beam;
the reselection judging module is used for judging whether the second signal strength is continuously larger than the sum of the first signal strength and a configuration threshold value in a first preset duration;
the second signal intensity obtaining module is used for obtaining third signal intensity of the regional beam in the cell to which the current beam belongs if the second signal intensity is continuously larger than the sum of the first signal intensity and the configuration threshold value within the first preset time period;
the in-zone reselection judging module is used for judging whether the third signal intensity is continuously larger than the sum of the first signal intensity and a preset hysteresis value in a second preset time length, and the second preset time length and the preset hysteresis value are determined by the first signal intensity and a preset threshold value;
the beam switching module is used for determining the area beam corresponding to the third signal intensity as a target beam and switching the current beam into the target beam if the third signal intensity is continuously larger than the sum of the first signal intensity and a preset hysteresis value within a second preset duration;
The preset threshold comprises a first preset threshold and a second preset threshold, the first preset threshold is the difference between the configuration threshold and the self-defined value, the second preset threshold is the sum of the configuration threshold and the self-defined value, and the configuration threshold is the threshold issued by the network; the first preset threshold and the second preset threshold respectively correspond to different preset hysteresis values and different preset durations, and the in-area reselection judging module judges whether the third signal intensity in the second preset duration is continuously larger than the sum of the first signal intensity and the preset hysteresis value or not, and the in-area reselection judging module comprises: and performing beam switching when the first signal intensity of the current beam is smaller than the first preset threshold value by using a preset hysteresis value and a preset time length corresponding to the first preset threshold value, and performing beam switching when the first signal intensity is larger than the second preset threshold value by using a preset hysteresis value and a preset time length corresponding to the second preset threshold value.
7. The beam selection device of claim 6, wherein the intra-zone reselection determination module comprises:
a first threshold judging unit, configured to judge whether the first signal strength is smaller than the first preset threshold;
The first intra-area reselection judging unit is used for judging whether the third signal intensity is continuously larger than the sum of the first signal intensity and a preset hysteresis value corresponding to the first preset threshold value in a preset duration corresponding to the first preset threshold value if the first signal intensity is smaller than the first preset threshold value;
the second threshold judging unit is used for judging whether the first signal strength is larger than a second preset threshold or not if the first signal strength is not smaller than the first preset threshold;
and the second intra-area reselection judging unit is used for judging whether the third signal intensity is continuously larger than the sum of the preset hysteresis values corresponding to the first signal intensity and the second preset threshold value within the preset duration corresponding to the second preset threshold value if the first signal intensity is larger than the second preset threshold value.
8. The beam selection device of claim 6, wherein the first signal strength acquisition module comprises:
the signal intensity acquisition unit of the adjacent cell is used for acquiring a configuration threshold value, a configuration quantity value and the signal intensity of each wave beam in the first adjacent cell, if the configuration threshold value and the configuration quantity value are both acquired only one, or the signal intensity of each wave beam in the first adjacent cell is not larger than the configuration threshold value, the maximum signal intensity in the first adjacent cell is used as the second signal intensity of the first adjacent cell, if the two conditions are not satisfied, a plurality of signal intensities are selected in descending order from the maximum signal intensity in the first adjacent cell to serve as the second signal intensity of the first adjacent cell, and the number of the plurality of signal intensities is equal to the configuration quantity value.
9. A communication terminal comprising one or more processors; a storage means for storing one or more programs; the one or more programs, when executed by the one or more processors, enable the one or more processors to implement the beam selection method of any one of claims 1-5.
10. A computer readable storage medium having stored thereon a computer program, which when executed by a processor implements a beam selection method according to any of claims 1-5.
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