CN114286396A - Cell switching method, device, computing equipment and computer storage medium - Google Patents
Cell switching method, device, computing equipment and computer storage medium Download PDFInfo
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- CN114286396A CN114286396A CN202011032738.8A CN202011032738A CN114286396A CN 114286396 A CN114286396 A CN 114286396A CN 202011032738 A CN202011032738 A CN 202011032738A CN 114286396 A CN114286396 A CN 114286396A
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Abstract
The embodiment of the invention relates to the technical field of communication, and discloses a cell switching method, which comprises the following steps: acquiring service data of a source cell, wherein the service data carries a service type identifier; determining a pilot frequency switching threshold table corresponding to the service data of the source cell according to the service type identifier, wherein the pilot frequency switching threshold table comprises corresponding relations between each switching event and a pilot frequency switching threshold; different frequency switching threshold tables corresponding to different service types are different; acquiring self reference signal receiving power and adjacent cell reference signal receiving power reported by the source cell; determining a target adjacent cell meeting the pilot frequency switching threshold according to the self reference signal receiving power and the adjacent cell reference signal receiving power; and sending a switching instruction to the source cell so as to switch the source cell to the target neighbor cell. Through the mode, the embodiment of the invention realizes cell switching.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a cell switching method, a cell switching device, a cell switching computing device and a computer storage medium.
Background
Cell switching is the switching of channels when a mobile station moves from one cell to another in order to maintain uninterrupted communication for the mobile user.
When the cell is switched, the switching is carried out according to a preset switching threshold. In the prior art, the same switching threshold is adopted for both data service and voice service to perform switching. Because the data service and the voice service have difference in the uplink packet loss and jitter tolerance, the same switching threshold is adopted to cause poor user perception.
Disclosure of Invention
In view of the foregoing problems, embodiments of the present invention provide a cell switching method, an apparatus, a computing device, and a computer storage medium, which are used to solve the problem in the prior art that a user perception is poor due to different services using the same switching threshold.
According to an aspect of the embodiments of the present invention, there is provided a cell handover method, including:
acquiring service data of a source cell, wherein the service data carries a service type identifier;
determining a pilot frequency switching threshold table corresponding to the service data of the source cell according to the service type identifier, wherein the pilot frequency switching threshold table comprises corresponding relations between each switching event and a pilot frequency switching threshold; different frequency switching threshold tables corresponding to different service types are different;
acquiring self reference signal receiving power and adjacent cell reference signal receiving power reported by the source cell;
determining a target adjacent cell meeting the pilot frequency switching threshold according to the self reference signal receiving power and the adjacent cell reference signal receiving power;
and sending a switching instruction to the source cell so as to switch the source cell to the target neighbor cell.
In an optional manner, before the obtaining the service data of the source cell, the method further includes:
acquiring a first frequency band of the source cell and a second frequency band of each adjacent cell;
and determining each switching event according to the first frequency band and the second frequency band.
In an optional manner, before the obtaining the service data of the source cell, the method further includes:
acquiring a first frequency band of the source cell and a second frequency band of each adjacent cell;
and determining the switching threshold of the source cell and the adjacent cell according to the first frequency band and the second frequency band.
In a selectable manner, the determining, according to the first frequency band and the second frequency band, a switching threshold between the source cell and the neighboring cell includes:
and determining a switching threshold of the source cell and the adjacent cell according to the first frequency band and the second frequency band so as to enable the switching threshold to meet a ping-pong prevention mechanism.
In an optional manner, the determining, according to the first frequency band and the second frequency band, a handover threshold of the source cell and the neighboring cell, so that the handover threshold satisfies a ping-pong prevention mechanism includes:
if the first frequency band is the same as the second frequency band, the switching threshold of the source cell and the adjacent cell satisfies:
OfnA+OcnA+OfnB+OcnB-HysA-HysB<OfsA+OcsA+OffA+OfsB+OcsB+OffB；
wherein OfnA is a first frequency offset of the source cell, OcnA is a cell offset of the source cell, HysA is a switching amplitude hysteresis value of the source cell, OfsA is a second frequency offset of the source cell, OcsA is a serving cell offset value of the source cell, and OffA is a switching offset value of the source cell; OfnB is the first frequency offset of the adjacent cell, OcnB is the cell offset of the adjacent cell, HysB is the switching amplitude hysteresis value of the adjacent cell, OfsB is the second frequency offset of the adjacent cell, OcsB is the serving cell offset value of the adjacent cell, and OffB is the switching offset value of the adjacent cell.
In an optional manner, the determining, according to the first frequency band and the second frequency band, a handover threshold of the source cell and the neighboring cell, so that the handover threshold satisfies a ping-pong prevention mechanism includes:
if the first frequency band is different from the second frequency band, and the preset priority of the first frequency band is greater than the preset priority of the second frequency band, the switching threshold of the source cell and the adjacent cell meets the following conditions:
ms + Hys < Thresh1 and Mn + OfnA + Ocn-Hys > Thresh 2;
if the first frequency band is different from the second frequency band, and the preset priority of the first frequency band is smaller than the preset priority of the second frequency band, the switching threshold of the source cell and the adjacent cell meets the following conditions:
Mn+OfnA+Ocn-Hys>Thresh；
wherein Ms is the self-reference signal received power, Mn is the neighboring cell reference signal received power, Thresh1 is a fourth threshold for the source cell to switch to the neighboring cell, and Thresh2 is a signal received power measurement trigger threshold; thresh is a third threshold for the source cell to switch to the neighboring cell.
In a selectable manner, the determining, according to the first frequency band and the second frequency band, a switching threshold between the source cell and the neighboring cell includes:
acquiring multiple groups of historical sensing data of the source cell, wherein each group of sensing data comprises a corresponding relation between self reference signal receiving power and a signal-to-interference-plus-noise ratio;
determining a perception threshold according to the inflection point of the interference plus noise ratio;
and determining the switching threshold of the source cell and the adjacent cell according to the sensing threshold and the first frequency band.
According to another aspect of the embodiments of the present invention, there is provided an apparatus for cell handover, the apparatus including:
the first acquisition module is used for acquiring service data of a source cell, wherein the service data carries a service type identifier;
a first determining module, configured to determine, according to the service type identifier, a pilot frequency switching threshold table corresponding to service data of the source cell, where the pilot frequency switching threshold table includes a correspondence between each switching event and a pilot frequency switching threshold; different frequency switching threshold tables corresponding to different service types are different;
a second obtaining module, configured to obtain a self-reference signal received power and a neighboring cell reference signal received power reported by the source cell;
a second determining module, configured to determine, according to the self reference signal received power and the neighboring cell reference signal received power, a target neighboring cell that meets the pilot frequency switching threshold;
and the sending module is used for sending a switching instruction to the source cell so as to switch the source cell to the target neighbor cell.
According to another aspect of embodiments of the present invention, there is provided a computing device 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 cell switching method.
According to another aspect of the embodiments of the present invention, there is provided a computer-readable storage medium, where at least one executable instruction is stored, and when the executable instruction is executed on a computing device/apparatus, the computing device/apparatus executes an operation corresponding to the above-mentioned cell handover method.
In the embodiment of the invention, the pilot frequency switching threshold is determined according to the service type, and the target adjacent cell switched by the cell is determined according to the pilot frequency switching threshold, so that the source cell is switched to the target adjacent cell.
The foregoing description is only an overview of the technical solutions of the embodiments of the present invention, and the embodiments of the present invention can be implemented according to the content of the description in order to make the technical means of the embodiments of the present invention more clearly understood, and the detailed description of the present invention is provided below in order to make the foregoing and other objects, features, and advantages of the embodiments of the present invention more clearly understandable.
Drawings
The drawings are only for purposes of illustrating 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 is a flowchart illustrating a method for cell handover according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a method for cell handover according to another embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a handover event relationship between frequency bands in a method for cell handover according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a method for cell handover according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a method for cell handover according to an embodiment of the present invention;
fig. 6 shows a functional block diagram of a cell switching apparatus according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a computing device according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein.
Fig. 1 shows a flowchart of a method for cell handover according to an embodiment of the present invention. As shown in fig. 1, the method comprises the steps of:
step 110: and acquiring service data of the source cell.
The source cell is a cell in which any terminal currently resides. The service data is data generated when the terminal performs a service. The service data carries a service type identifier, and one service data corresponds to one service type identifier. The service type identifications corresponding to the same kind of service data are the same, and the service type identifications corresponding to different kinds of service data are different.
The embodiment of the present invention does not limit the specific division manner of the service types, for example, in a specific implementation manner, the service types include a voice service type and a data service type. In another specific embodiment, the data service types may be further divided into video service types, data service types, signaling bearer service types, and the like.
The embodiment of the present invention does not limit the specific form of the service type identifier, for example, different service types may be identified by using different numbers or letters. In a specific embodiment, the service type identifier is a Qos Class Identifier (QCI), where the QCI0 is a data service and the QCI1 is a voice service.
Step 120: and determining a pilot frequency switching threshold table corresponding to the service data of the source cell according to the service type identifier.
The different-frequency switching threshold table stores corresponding relations between each switching event and the different-frequency switching threshold. Different service types have different corresponding different pilot frequency switching thresholds. For example, the service types include a data service and a voice service, both the data service and the voice service include respective handover events, and the number and the types of the handover events included in the data service and the voice service may be the same or different, which is not limited in this embodiment of the present invention. For the same switching event, the switching thresholds corresponding to the voice service and the data service are different. The following describes a common handover event in the embodiments.
Event A2: when the Reference Signal Receiving Power (Reference Signal Receiving Power, RSRP) measured by the terminal to the source cell is lower than the first threshold, the eNodeB starts inter-frequency/inter-system measurement.
Event A3: and when the RSRP of the adjacent cell measured by the terminal is higher than the second threshold than the source cell, the eNodeB starts a same frequency/different frequency switching request.
Event A4: and when the RSRP measured by the terminal in the adjacent region is larger than a preset third threshold, the terminal starts to switch to the adjacent region.
Event A5: and the RSRP measured by the terminal to the source cell is lower than a preset fourth threshold, and the RSRP of the adjacent cell is higher than the preset fourth threshold, so that the source eNodeB starts a pilot frequency switching request.
The specific values of the preset first threshold to the preset fourth threshold in each event are different. The determination of the pilot frequency handover threshold values corresponding to different service types is further described in the following embodiments, please refer to the detailed description in the following embodiments.
Step 130: and acquiring the self reference signal receiving power reported by the source cell and the adjacent cell reference signal receiving power.
In this step, the self-reference signal received power reported by the source cell is the reference signal received power of the source cell measured by the terminal device in the source cell. The neighbor cell reference signal received power reported by the source cell is the pilot signal received power of the pilot frequency neighbor cell measured by the terminal equipment in the source cell. After measuring the self-reference signal receiving power and the adjacent cell reference signal receiving power of the source cell, the terminal device in the source cell uploads the self-reference signal receiving power and the adjacent cell reference signal receiving power to an eNodeB side, so that the eNodeB obtains the self-reference signal receiving power and the adjacent cell reference signal receiving power of the source cell.
Step 140: and determining a target adjacent cell meeting the pilot frequency switching threshold according to the self reference signal receiving power and the adjacent cell reference signal receiving power.
In this step, the obtained self reference signal received power and each neighboring cell reference signal received power are compared with thresholds corresponding to each switching event, and a target neighboring cell satisfying the pilot frequency switching threshold is determined. For example, the source cell is a cell a, the rsrp of the cell a is-92 dBm, the rsrp of the neighboring cell is-88 dBm, the service type is voice service, the first threshold of an event a2 corresponding to the voice service is-90 dBm, the second threshold of an event A3 is 2dBm, the third threshold of an event a4 is-90 dBm, and the fourth threshold of an event a5 is-90 dBm, then the neighboring cell satisfies the inter-frequency handover threshold, and the neighboring cell is the target neighboring cell.
Step 150: and sending a switching instruction to the source cell so as to switch the source cell to the target adjacent cell.
After the target adjacent cell is determined, the eNodeB sends a switching instruction to the source cell, and the terminal is switched to the target adjacent cell.
In the embodiment of the invention, the pilot frequency switching threshold is determined according to the service type, and the target adjacent cell switched by the cell is determined according to the pilot frequency switching threshold, so that the source cell is switched to the target adjacent cell.
Fig. 2 is a flowchart illustrating a method for cell handover according to another embodiment of the present invention. As shown in fig. 2, the method comprises the steps of:
step 210: and acquiring a first frequency band of the source cell and a second frequency band of the adjacent cell.
Step 220: and determining each switching event according to the first frequency band and the second frequency band.
The determination of each switching event ensures that the switching of the same-frequency-band coverage cells among the base stations is fast and effective, so that the packet loss rate and the RTP jitter rate are reduced. The switching nodes need to be reasonably arranged in the cells covered by different frequency bands in the base station, so that the disconnection or call drop is avoided.
If the first frequency band is the same as the second frequency band, namely the switching event between the cells in the same frequency band adopts an A2+ A3 event, the threshold of the A3 event is a difference value, and the difference value is a smaller value, so that the switching between the cells in the same frequency band is smoother.
If the first frequency band is different from the second frequency band, when the preset priority of the first frequency band is higher than the preset priority of the second frequency band, adopting an event A2+ A5. When the preset priority of the first frequency band is lower than the preset priority of the second frequency band, the A2+ A4 event is adopted. The preset priority among the frequency bands is the current priority order in the current network. In a specific embodiment, the preset priorities between the frequency bands are, in order from high to low: e band > D band > A band > FDD1800 band > F band > FDD900 band. The different frequency handover event configuration of each frequency band is shown in table 1:
TABLE 1
In order to more intuitively represent the relationship between the setting of each switching event and the frequency band, fig. 3 shows a schematic diagram of the relationship between the switching events of the frequency bands. The switching relationship between the events in fig. 3 satisfies the correspondence relationship between the switching time and the first frequency band and the second frequency band shown in table 1.
According to the embodiment of the invention, the switching event between the frequency bands is determined according to the first frequency band of the source cell and the second frequency band of the target cell, and through the setting mode, the switching between the cells can meet the data transmission requirement, so that the user perception is improved on the premise of ensuring the user transmission rate.
Fig. 4 shows a flowchart of a method for cell handover according to another embodiment of the present invention, and as shown in fig. 4, the embodiment of the present invention includes the following steps as shown in fig. 4:
step 410: and acquiring a first frequency band of the source cell and a second frequency band of each adjacent cell.
Step 420: and determining the switching threshold of the source cell and the adjacent cell according to the first frequency band and the second frequency band.
The switching threshold of the source cell and the adjacent cell is set to enable the switching threshold to meet a ping-pong prevention mechanism. Ping-pong handover refers to the phenomenon of terminal equipment switching back and forth between a source cell and a neighboring cell. If the first frequency band and the second frequency band are the same, namely, cell switching is carried out between the same frequency bands, an event A2+ A3 is adopted. Then the first threshold for the a2 event is met:
Mn+Ofn+Ocn-Hys>Ms+Ofs+Ocs+Off；
the second threshold for the a3 event is met:
OfnA+OcnA+OfnB+OcnB-HysA-HysB<OfsA+OcsA+OffA+OfsB+OcsB+OffB；
wherein Ms is the self-reference signal received power, Mn is the neighboring cell reference signal received power, OfnA is the first frequency offset of the source cell, OcnA is the cell offset of the source cell, HysA is the handover amplitude hysteresis value of the source cell, OfsA is the second frequency offset of the source cell, OcsA is the serving cell offset value of the source cell, and OffA is the handover offset value of the source cell; OfnB is the first frequency offset of the adjacent cell, OcnB is the cell offset of the adjacent cell, HysB is the switching amplitude hysteresis value of the adjacent cell, OfsB is the second frequency offset of the adjacent cell, OcsB is the serving cell offset value of the adjacent cell, and OffB is the switching offset value of the adjacent cell.
If the first frequency band is different from the second frequency band and the preset priority of the first frequency band is greater than the preset priority of the second frequency band, for example, switching from the E frequency band to the F frequency band, an event of A2+ A5 is adopted. Then the first threshold for the a2 event for the source cell and the neighbor cell also satisfies:
Mn+Ofn+Ocn-Hys>Ms+Ofs+Ocs+Off；
the fourth threshold for the a5 event is satisfied:
ms + Hys < Thresh1 and Mn + OfnA + Ocn-Hys > Thresh 2;
if the first frequency band is different from the second frequency band and the preset priority of the first frequency band is less than the preset priority of the second frequency band, for example, switching from the F frequency band to the E frequency band, an event of a2+ a4 is adopted. Then the first threshold for the a2 event for the source cell and the neighbor cell also satisfies:
Mn+Ofn+Ocn-Hys>Ms+Ofs+Ocs+Off；
the third threshold for the a4 event is met:
Mn+OfnA+Ocn-Hys>Thresh；
wherein Ms is the self-reference signal received power, Mn is the neighbor reference signal received power, Thresh1 is a fourth threshold, and Thresh2 is a first threshold; thresh is a third threshold for the source cell to switch to the neighboring cell.
The embodiment of the invention sets each switching event according to the ping-pong prevention mechanism, and avoids the ping-pong phenomenon generated during cell switching, thereby ensuring the stability of the terminal residing in the cell and improving the user perception.
Fig. 5 is a flowchart of a method for cell handover according to another embodiment of the present invention, and as shown in fig. 5, the embodiment of the present invention includes the following steps:
step 510: historical sets of sensing data of the source cell are obtained.
Each group of sensing data includes a corresponding relationship between a self-reference signal received power and a signal to interference plus noise ratio (SINR) value. The historical multi-group sensing data comprises sensing data of each frequency band.
Step 520: and determining a perception threshold according to the inflection point of the interference plus noise ratio.
Wherein, the inflection point of the interference plus noise ratio value represents that the user changes from normal perception to abnormal perception. The inflections corresponding to the cells of different frequency bands may be the same or different, and fig. 6 shows a schematic diagram of the inflections corresponding to the cells of each frequency band in an embodiment. As shown in fig. 6, the cell inflection point of each frequency band mainly occurs in the region of the reception power of-110, -100.
Step 530: and determining a switching threshold of the source cell and the adjacent cell according to the sensing threshold and the first frequency band.
In this step, a corresponding sensing threshold is determined according to the first frequency band, a switching threshold is determined according to the threshold, and the switching threshold is ensured to be higher than the sensing threshold, so that the user sensing is ensured. For example, if the sensing threshold corresponding to the first frequency band is-100 dBm, the determined handover threshold is higher than-100 dBm, so as to ensure that the cell handover is performed when the user senses the change.
It should be understood that the embodiment of the present invention can be implemented in combination with the above embodiment, that is, the requirement of ping-pong prevention mechanism and user perception is satisfied at the same time, so as to ensure the reliability of cell switching. In a specific embodiment, the thresholds corresponding to the respective handover events set for the data service and the voice service are shown in table 2 and table 3, respectively.
TABLE 2
TABLE 3
In table 2 and table 3, the a2 event of the A3 event indicates a threshold for starting neighbor cell measurement when an intra-frequency cell is handed over. And when the A2 event of the A4/A5 event represents the pilot frequency cell switching, starting a threshold of neighbor cell measurement.
According to the embodiment of the invention, the perception threshold is obtained through historical user perception data, and the user perception can be ensured according to the switching threshold set by the perception threshold, so that the user experience is improved.
Fig. 6 shows a functional block diagram of a cell switching apparatus according to an embodiment of the present invention. As shown in fig. 6, the apparatus includes: a first obtaining module 610, a first determining module 620, a second obtaining module 630, a second determining module 640, and a sending module 650. A first obtaining module 610, configured to obtain service data of a source cell, where the service data carries a service type identifier. A first determining module 620, configured to determine, according to the service type identifier, a pilot frequency switching threshold table corresponding to the service data of the source cell, where the pilot frequency switching threshold table includes a correspondence between each switching event and a pilot frequency switching threshold; different frequency switching threshold tables corresponding to different service types are different. A second obtaining module 630, configured to obtain the self reference signal received power and the neighboring cell reference signal received power reported by the source cell. A second determining module 640, configured to determine, according to the self reference signal received power and the neighboring cell reference signal received power, a target neighboring cell that meets the pilot frequency switching threshold. A sending module 650, configured to send a handover instruction to the source cell, so that the source cell is handed over to the target neighboring cell.
In an alternative form, the apparatus further comprises:
a third obtaining module 660, configured to obtain the first frequency band of the source cell and the second frequency band of each neighboring cell. A third determining module 670, configured to determine each handover event according to the first frequency band and the second frequency band.
In an optional manner, the apparatus further comprises:
a fourth obtaining module 680, configured to obtain the first frequency band of the source cell and the second frequency band of each neighboring cell. A fourth determining module 690, configured to determine a switching threshold of the source cell and the neighboring cell according to the first frequency band and the second frequency band.
In an alternative manner, the fourth determination module 690 is further configured to:
and determining a switching threshold of the source cell and the adjacent cell according to the first frequency band and the second frequency band so as to enable the switching threshold to meet a ping-pong prevention mechanism.
In an alternative manner, the fourth determination module 690 is further configured to:
if the first frequency band is the same as the second frequency band, the switching threshold of the source cell and the adjacent cell satisfies:
OfnA+OcnA+OfnB+OcnB-HysA-HysB<OfsA+OcsA+OffA+OfsB+OcsB+OffB；
wherein OfnA is a first frequency offset of the source cell, OcnA is a cell offset of the source cell, HysA is a switching amplitude hysteresis value of the source cell, OfsA is a second frequency offset of the source cell, OcsA is a serving cell offset value of the source cell, and OffA is a switching offset value of the source cell; OfnB is the first frequency offset of the adjacent cell, OcnB is the cell offset of the adjacent cell, HysB is the switching amplitude hysteresis value of the adjacent cell, OfsB is the second frequency offset of the adjacent cell, OcsB is the serving cell offset value of the adjacent cell, and OffB is the switching offset value of the adjacent cell.
In an alternative manner, the fourth determination module 690 is further configured to:
if the first frequency band is different from the second frequency band, and the preset priority of the first frequency band is greater than the preset priority of the second frequency band, the switching threshold of the source cell and the adjacent cell meets the following conditions:
ms + Hys < Thresh1 and Mn + OfnA + Ocn-Hys > Thresh 2;
if the first frequency band is different from the second frequency band, and the preset priority of the first frequency band is smaller than the preset priority of the second frequency band, the switching threshold of the source cell and the adjacent cell meets the following conditions:
Mn+OfnA+Ocn-Hys>Thresh；
wherein Ms is the self-reference signal received power, Mn is the neighboring cell reference signal received power, Thresh1 is a fourth threshold for the source cell to switch to the neighboring cell, and Thresh2 is a signal received power measurement trigger threshold; thresh is a third threshold for the source cell to switch to the neighboring cell.
In an alternative manner, the fourth determination module 690 is further configured to:
acquiring multiple groups of historical sensing data of the source cell, wherein each group of sensing data comprises a corresponding relation between self reference signal receiving power and a signal-to-interference-plus-noise ratio;
determining a perception threshold according to the inflection point of the interference plus noise ratio;
and determining the switching threshold of the source cell and the adjacent cell according to the sensing threshold and the first frequency band.
In the embodiment of the invention, the pilot frequency switching threshold is determined according to the service type, and the target adjacent cell switched by the cell is determined according to the pilot frequency switching threshold, so that the source cell is switched to the target adjacent cell.
Fig. 7 is a schematic structural diagram of a computing device according to an embodiment of the present invention, and the specific embodiment of the present invention does not limit the specific implementation of the computing device.
As shown in fig. 7, the computing device may include: a processor (processor)702, a Communications Interface 704, a memory 706, and a communication bus 708.
Wherein: the processor 702, communication interface 704, and memory 706 communicate with each other via a communication bus 708. A communication interface 704 for communicating with network elements of other devices, such as clients or other servers. The processor 702 is configured to execute the procedure 710, and may specifically execute the relevant steps in the above-described method embodiment for cell handover.
In particular, the program 710 may include program code comprising computer-executable instructions.
The processor 702 may be a central processing unit CPU, or an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement an embodiment of the present invention. The computing device includes one or more processors, which may 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.
The memory 706 stores a program 710. The memory 706 may comprise high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.
Specifically, the program 710 may be invoked by the processor 702 to enable the computing device to perform steps 110 to 150 in fig. 1, steps 210 to 220 in fig. 2, steps 410 to 420 in fig. 4, and steps 510 to 530 in fig. 5, or to implement the functions of the modules 610 to 690 in fig. 6.
An embodiment of the present invention provides a computer-readable storage medium, where the storage medium stores at least one executable instruction, and when the executable instruction is executed on a computing device/apparatus, the computing device/apparatus executes an operation corresponding to one of the cell handover methods in any of the above method embodiments.
Embodiments of the present invention provide a computer program, where the computer program may be invoked by a processor to enable a computing device to execute an operation corresponding to one of the cell handover methods in any of the above method embodiments.
An embodiment of the present invention provides a computer program product, where the computer program product includes a computer program stored on a computer-readable storage medium, where the computer program includes program instructions, and when the program instructions are run on a computer, the computer is caused to execute operations corresponding to one of the cell handover methods in any of the above-mentioned method embodiments.
The algorithms or displays presented herein are not inherently related to any particular computer, virtual system, 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. In addition, embodiments of the present invention are 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 embodiments of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the invention 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.
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 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.
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. The steps in the above embodiments should not be construed as limiting the order of execution unless specified otherwise.
Claims (10)
1. A method of cell handover, the method comprising:
acquiring service data of a source cell, wherein the service data carries a service type identifier;
determining a pilot frequency switching threshold table corresponding to the service data of the source cell according to the service type identifier, wherein the pilot frequency switching threshold table comprises corresponding relations between each switching event and a pilot frequency switching threshold; different frequency switching threshold tables corresponding to different service types are different;
acquiring self reference signal receiving power and adjacent cell reference signal receiving power reported by the source cell;
determining a target adjacent cell meeting the pilot frequency switching threshold according to the self reference signal receiving power and the adjacent cell reference signal receiving power;
and sending a switching instruction to the source cell so as to switch the source cell to the target neighbor cell.
2. The method of claim 1, wherein before the obtaining the traffic data of the source cell, the method further comprises:
acquiring a first frequency band of the source cell and a second frequency band of each adjacent cell;
and determining each switching event according to the first frequency band and the second frequency band.
3. The method of claim 1, wherein before the obtaining the traffic data of the source cell, the method further comprises:
acquiring a first frequency band of the source cell and a second frequency band of each adjacent cell;
and determining the switching threshold of the source cell and the adjacent cell according to the first frequency band and the second frequency band.
4. The method of claim 3, wherein the determining the handover threshold for the source cell and the neighboring cell according to the first frequency band and the second frequency band comprises:
and determining a switching threshold of the source cell and the adjacent cell according to the first frequency band and the second frequency band so as to enable the switching threshold to meet a ping-pong prevention mechanism.
5. The method of claim 4, wherein the determining the handover thresholds of the source cell and the neighboring cell according to the first frequency band and the second frequency band so that the handover thresholds satisfy a ping-pong prevention mechanism comprises:
if the first frequency band is the same as the second frequency band, the switching threshold of the source cell and the adjacent cell satisfies:
OfnA+OcnA+OfnB+OcnB-HysA-HysB<OfsA+OcsA+OffA+OfsB+OcsB+OffB；
wherein OfnA is a first frequency offset of the source cell, OcnA is a cell offset of the source cell, HysA is a switching amplitude hysteresis value of the source cell, OfsA is a second frequency offset of the source cell, OcsA is a serving cell offset value of the source cell, and OffA is a switching offset value of the source cell; OfnB is the first frequency offset of the adjacent cell, OcnB is the cell offset of the adjacent cell, HysB is the switching amplitude hysteresis value of the adjacent cell, OfsB is the second frequency offset of the adjacent cell, OcsB is the serving cell offset value of the adjacent cell, and OffB is the switching offset value of the adjacent cell.
6. The method of claim 4, wherein the determining the handover thresholds of the source cell and the neighboring cell according to the first frequency band and the second frequency band so that the handover thresholds satisfy a ping-pong prevention mechanism comprises:
if the first frequency band is different from the second frequency band, and the preset priority of the first frequency band is greater than the preset priority of the second frequency band, the switching threshold of the source cell and the adjacent cell meets the following conditions:
ms + Hys < Thresh1 and Mn + OfnA + Ocn-Hys > Thresh 2;
if the first frequency band is different from the second frequency band, and the preset priority of the first frequency band is smaller than the preset priority of the second frequency band, the switching threshold of the source cell and the adjacent cell meets the following conditions:
Mn+OfnA+Ocn-Hys>Thresh；
wherein Ms is the self-reference signal received power, Mn is the neighboring cell reference signal received power, Thresh1 is a fourth threshold for the source cell to switch to the neighboring cell, and Thresh2 is a signal received power measurement trigger threshold; thresh is a third threshold for the source cell to switch to the neighboring cell.
7. The method of claim 3, wherein the determining the handover threshold for the source cell and the neighboring cell according to the first frequency band and the second frequency band comprises:
acquiring multiple groups of historical sensing data of the source cell, wherein each group of sensing data comprises a corresponding relation between self reference signal receiving power and a signal-to-interference-plus-noise ratio;
determining a perception threshold according to the inflection point of the interference plus noise ratio;
and determining the switching threshold of the source cell and the adjacent cell according to the sensing threshold and the first frequency band.
8. An apparatus for cell handover, the apparatus comprising:
the first acquisition module is used for acquiring service data of a source cell, wherein the service data carries a service type identifier;
a first determining module, configured to determine, according to the service type identifier, a pilot frequency switching threshold table corresponding to service data of the source cell, where the pilot frequency switching threshold table includes a correspondence between each switching event and a pilot frequency switching threshold; different frequency switching threshold tables corresponding to different service types are different;
a second obtaining module, configured to obtain a self-reference signal received power and a neighboring cell reference signal received power reported by the source cell;
a second determining module, configured to determine, according to the self reference signal received power and the neighboring cell reference signal received power, a target neighboring cell that meets the pilot frequency switching threshold;
and the sending module is used for sending a switching instruction to the source cell so as to switch the source cell to the target neighbor cell.
9. A computing 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 corresponding operation of the cell switching method according to any one of claims 1-7.
10. A computer-readable storage medium having stored therein at least one executable instruction which, when run on a computing device/apparatus, causes the computing device/apparatus to perform operations of a method of cell handover as claimed in any one of claims 1 to 7.
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