CN114554555B - Cell switching method and device and base station - Google Patents

Cell switching method and device and base station Download PDF

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Publication number
CN114554555B
CN114554555B CN202011293497.2A CN202011293497A CN114554555B CN 114554555 B CN114554555 B CN 114554555B CN 202011293497 A CN202011293497 A CN 202011293497A CN 114554555 B CN114554555 B CN 114554555B
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China
Prior art keywords
cell
azimuth angle
signal intensity
function value
preset
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CN114554555A (en
Inventor
潘翔
梁辉
张涛
曹亘
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China United Network Communications Group Co Ltd
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China United Network Communications Group Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention discloses a cell switching method, a cell switching device and a base station, and relates to the field of communication. The method can solve the problem that the ping-pong switching between cells cannot be effectively solved by adopting a timer in the prior art. The method comprises the following steps: receiving a measurement report reported by terminal equipment from a preset time to a current time; wherein, the measurement report includes: the signal intensity of the serving cell, the signal intensity of the adjacent cell, the azimuth angle of the serving cell, the azimuth angle of the adjacent cell and the azimuth angle of the terminal equipment; the preset time is before the current time. And switching the terminal equipment from the serving cell to the adjacent cell under the condition that the signal intensity of the serving cell from the preset moment to the current moment and the signal intensity of the adjacent cell meet the first preset condition and the azimuth angle of the serving cell, the azimuth angle of the adjacent cell and the azimuth angle of the terminal equipment at the current moment meet the second preset condition. The embodiment of the invention is applied to a network system.

Description

Cell switching method and device and base station
Technical Field
The embodiment of the invention relates to the field of communication, in particular to a cell switching method and device and a base station.
Background
In a mobile communication system, if the signal strengths of two cells change drastically in a certain area, a phenomenon that a terminal performs handover back and forth between the two cells occurs, which causes a problem called "ping-pong handover".
In view of such a problem, the conventional solution is mainly to start a timer after a terminal device is handed over from cell 1 to cell 2, and if cell 2 receives a handover measurement report from cell 2 to cell 1 reported by the terminal device again before the timer expires, the report is discarded, that is, the handover action to cell 1 is not initiated. And after the timer is overtime, if the cell 2 receives the switching measurement report of switching from the cell 2 to the cell 1 reported by the terminal equipment again and the switching condition is met, the switching action of the cell 1 is allowed to be initiated.
However, the problem with the timer approach is that the timer duration setting requirements are high. If the setting is too small, the ping-pong switching cannot be effectively controlled. If the setting is too large, the signal quality of the current serving cell is poor after the handover, and the handover cannot be timely performed again to the original serving cell. Therefore, the network rate and the disconnection rate of the terminal equipment are greatly influenced, and the user experience is greatly reduced.
Disclosure of Invention
The invention provides a cell switching method, a cell switching device and a base station, which can solve the problem that ping-pong switching among cells cannot be effectively solved by adopting a timer mode in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
in a first aspect, a cell handover method is provided, the method comprising: receiving a measurement report reported by terminal equipment from a preset time to a current time; wherein, the measurement report includes: the signal intensity of the serving cell, the signal intensity of the adjacent cell, the azimuth angle of the serving cell, the azimuth angle of the adjacent cell and the azimuth angle of the terminal equipment; the preset time is before the current time. And switching the terminal equipment from the serving cell to the adjacent cell under the condition that the signal intensity of the serving cell from the preset moment to the current moment and the signal intensity of the adjacent cell meet the first preset condition and the azimuth angle of the serving cell, the azimuth angle of the adjacent cell and the azimuth angle of the terminal equipment at the current moment meet the second preset condition.
Based on the above method, in a realistic scenario, when the signal strengths of two adjacent cells in a certain area change drastically, a "ping-pong handover" problem occurs. In the prior art, when the problem is solved, the ping-pong switching of the terminal equipment cannot be effectively controlled by adopting a timer mode. Therefore, in order to solve the problem, the embodiment of the application increases the judgment condition of the direction angle on the basis of the judgment of the signal intensity. Thus, ping-pong switching of the terminal equipment can be effectively avoided. And the terminal equipment can be connected to the service cell with better signal quality in time, so that the network rate of the terminal equipment is ensured, and the disconnection rate is reduced.
In a second aspect, there is provided a cell switching apparatus comprising:
the receiving unit is used for receiving the measurement report reported by the terminal equipment from the preset moment to the current moment; wherein, the measurement report includes: the signal intensity of the serving cell, the signal intensity of the adjacent cell, the azimuth angle of the serving cell, the azimuth angle of the adjacent cell and the azimuth angle of the terminal equipment; the preset time is before the current time.
The processing unit is used for switching the terminal equipment from the serving cell to the adjacent cell under the condition that the signal intensity of the serving cell and the signal intensity of the adjacent cell from the preset moment to the current moment received by the receiving unit meet the first preset condition and the azimuth angle of the serving cell, the azimuth angle of the adjacent cell and the azimuth angle of the terminal equipment at the current moment meet the second preset condition.
It can be appreciated that the above-provided cell switching apparatus is configured to perform the method corresponding to the first aspect provided above, and therefore, the advantages achieved by the above-provided cell switching apparatus may refer to the method corresponding to the first aspect and the advantages of the corresponding scheme in the following detailed description, which are not repeated herein.
In a third aspect, a base station is provided, the base station comprising the cell switching apparatus of the second aspect.
In a fourth aspect, a cell switching device is provided, where the structure of the cell switching device includes a processor configured to execute program instructions, and cause the cell switching device to perform the method of the first aspect.
In a fifth aspect, there is provided a computer readable storage medium having stored therein computer program code which, when run on a cell switching apparatus, causes the cell switching apparatus to perform the method of the first aspect described above.
In a sixth aspect, there is provided a computer program product storing computer software instructions as described above, which when run on a cell handover device, cause the cell handover device to perform a program as the method of the first aspect described above.
Drawings
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present invention;
fig. 2 is a flow chart of a cell handover method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an azimuth angle determination coordinate system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a cell switching device according to an embodiment of the present invention;
fig. 5 is a second schematic structural diagram of a cell switching device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a computer program product of a service processing method according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
It should be noted that, in the embodiments of the present invention, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.
It should be noted that, in the embodiment of the present invention, "english: of", "corresponding" and "corresponding" may sometimes be used in combination, and it should be noted that the meaning to be expressed is consistent when the distinction is not emphasized.
In the embodiments of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying 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 application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the prior art, the problem that the signal intensity of two cells is changed drastically in a certain area is solved, and a terminal can switch back and forth between the two cells is mainly solved by starting a timer after terminal equipment is switched from cell 1 to cell 2, and if the cell 2 receives a switching measurement report reported by the terminal equipment and switched from cell 2 to cell 1 again before the timer is overtime, the report is discarded, namely the switching action of cell 1 is not initiated. And after the timer is overtime, if the cell 2 receives the switching measurement report of switching from the cell 2 to the cell 1 reported by the terminal equipment again and the switching condition is met, the switching action of the cell 1 is allowed to be initiated.
However, the problem with the timer approach is that the timer duration setting requirements are high. If the setting is too small, the ping-pong switching cannot be effectively controlled. If the setting is too large, the signal quality of the current serving cell is poor after the handover, and the handover cannot be timely performed again to the original serving cell. Therefore, the network rate and the disconnection rate of the terminal equipment are greatly influenced, and the user experience is greatly reduced.
In order to solve the above technical problem, referring to fig. 1, an embodiment of the present application provides a communication system, which is applied to the cell handover method provided in the present application, where the communication system includes a terminal device 101, a cell handover device 102a, a cell handover device 102b, a base station 103a, and a base station 103b. Wherein, the cell switching device 102a is correspondingly connected with the base station 103a; cell switching device 102b is correspondingly connected to base station 103b. It should be noted that, the cell switching apparatus in the embodiments of the present application may be an independent device; or may be an apparatus or device in a base station; or may be a chip within some device or apparatus in the base station. Therefore, the embodiment of the present application does not limit the specific form of the cell switching apparatus.
In addition, the terminal 101 may be a device having a wireless transceiving function. The terminal 101 may be referred to by various names such as access terminal, terminal unit, terminal station, mobile station, remote terminal, mobile device, wireless communication device, terminal agent, or terminal apparatus, etc. The terminal 101 includes a handheld device, an in-vehicle device, a wearable device, or a computing device having wireless communication capabilities. The terminal 101 may be a mobile phone, a tablet computer, or a computer with a wireless transceiving function, for example. The terminal 101 may also be a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned, a wireless terminal in telemedicine, a wireless terminal in smart grid, a wireless terminal in smart city, a wireless terminal in smart home, etc. In addition, the terminal 101 may be a communication device having a wired communication function, such as a desktop wired computer. In the embodiment of the present application, the device for implementing the function of the terminal 101 may be a terminal, or may be a device capable of supporting the terminal 101 to implement the function, for example, a chip system. In the embodiment of the application, the chip system may be formed by a chip, and may also include a chip and other discrete devices. In the embodiment of the present application, taking a device for implementing a function of the terminal 101 as an example of a terminal, a technical solution provided in the embodiment of the present application is described.
Base station 103a or base station 103b may include various forms of base stations such as: macro base stations, micro base stations (also referred to as small stations), relay stations, access points, and the like. The method specifically comprises the following steps: an Access Point (AP) in a wireless local area network (Wireless Local Area Network, WLAN), a base station (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile Communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a base station (NodeB, NB) in wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA), an Evolved base station (Evolved Node B, eNB or eNodeB) in LTE, a relay station or access point, a vehicle device, a wearable device, a next generation Node B (The Next Generation Node B, gNB) in a 5G network, a base station in a future Evolved public land mobile network (Public Land Mobile Network, PLMN) network, or the like.
The base station 103a or 103b typically includes a baseband unit (BBU), a remote radio unit (remote radio unit, RRU), an antenna, and a feeder line for connecting the RRU and the antenna. Wherein the BBU is responsible for signal modulation. The RRU is used for being responsible for radio frequency processing. The antenna is used for converting between the cable uplink traveling wave and the space wave in the air. On the one hand, the distributed base station greatly shortens the length of the feeder line between the RRU and the antenna, can reduce signal loss and can also reduce the cost of the feeder line. On the other hand, the RRU and the antenna are smaller, and the RRU and the antenna can be installed in a random manner, so that the network planning is more flexible. Besides RRU remote, BBU can be centralized and placed in a Central Office (CO), and by the centralized mode, the number of base station rooms can be greatly reduced, the energy consumption of matched equipment, particularly an air conditioner, and a large amount of carbon emission can be reduced. In addition, after the scattered BBUs are concentrated to become a BBU baseband pool, unified management and scheduling can be realized, and resource allocation is more flexible. In this mode, all physical base stations evolve into virtual base stations. And all the virtual base stations share information such as data receiving and transmitting, channel quality and the like of users in the BBU baseband pool and cooperate with each other so that joint scheduling is realized.
In some deployments, base station 103a or base station 103b may include Centralized Units (CUs) and Distributed Units (DUs). Base station 103a or base station 103b may also include active antenna units (active antenna unit, AAU). CU realizes part of the functions of the base station and DU realizes part of the functions of the base station. For example, the CU is responsible for handling non-real time protocols and services, implementing the functions of the radio resource control (radio resource control, RRC), packet data convergence layer protocol (packet data convergence protocol, PDCP) layer. The DUs are responsible for handling physical layer protocols and real-time services, implementing the functions of the radio link control (radio link control, RLC for short), medium access control (media access control, MAC) and Physical (PHY) layers. The AAU realizes part of physical layer processing function, radio frequency processing and related functions of the active antenna. Since the information of the RRC layer is eventually changed into the information of the PHY layer or is converted from the information of the PHY layer, under this architecture, higher layer signaling, such as RRC layer signaling or PDCP layer signaling, may also be considered as being transmitted by the DU or by the du+aau. It may be understood that in the embodiment of the present application, the access network device may be a device including one or more of a CU node, a DU node, and an AAU node. In addition, the CU may be divided into network devices in the RAN, or may be divided into network devices in a Core Network (CN), which is not limited herein.
The system architecture and the service scenario described in the embodiments of the present invention are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided in the embodiments of the present application is equally applicable to similar technical problems.
The following specifically describes a cell handover method provided in the embodiment of the present application with reference to fig. 1.
Alternatively, the names of the messages or the names of the parameters in the messages in the embodiments described below are only an example, and other names may be also used in the specific implementation, which is not specifically limited in the embodiments of the present application.
The principle of the method in the embodiment of the application is as follows: the terminal device repeatedly switches between two cells under the condition that the signal intensity of two adjacent cells in a certain area is changed severely, so that the judgment condition of the direction angle is increased on the basis of judging the signal intensity in order to avoid the situation. Thus, the resource waste and occupation caused by repeated switching of the terminal equipment between two adjacent cells can be avoided. And the terminal can be connected to the service cell with better signal quality in time.
As shown in fig. 2, an exemplary embodiment of a cell handover method provided in the present application uses a base station as an execution body, and the method specifically includes the following steps:
201. and the base station receives a measurement report reported by the terminal equipment from the preset time to the current time.
Wherein, the measurement report includes: the signal intensity of the serving cell, the signal intensity of the adjacent cell, the azimuth angle of the serving cell, the azimuth angle of the adjacent cell and the azimuth angle of the terminal equipment; the preset time is before the current time.
For example, when the terminal device is in a connected state (in a call or on the internet), the base station may send measurement configuration information to the terminal device (the configuration information is generally carried by an RRCreconfig message), and mainly includes an object, a cell list, a reporting manner, a measurement identifier, an event parameter, and the like, which need to be measured by the terminal device. After receiving the measurement configuration information, the terminal device performs measurement according to the configuration information, and after the measurement is completed, the terminal device reports measurement data to the base station through a measurement report message. After receiving the measurement report, the base station decides which target cell the terminal device is switched to according to the measurement report, and sends the measurement report to the terminal device through a switching instruction message. After receiving the switching instruction message, the terminal equipment starts a cell switching process and switches from the current service cell to the target cell.
202. The base station switches the terminal equipment from the serving cell to the adjacent cell under the condition that the signal intensity of the serving cell from the preset moment to the current moment and the signal intensity of the adjacent cell meet a first preset condition and the azimuth angle of the serving cell, the azimuth angle of the adjacent cell and the azimuth angle of the terminal equipment at the current moment meet a second preset condition.
Optionally, the first preset condition includes: when the difference value between the signal intensity of the adjacent cell and the signal intensity of the service cell in all measurement reports from the preset time to the current time is larger than the signal intensity hysteresis value of the adjacent cell, and the duration from the preset time to the current time is longer than the triggering delay time of the adjacent cell.
In addition, before judging that the signal intensity of the serving cell from the preset time to the current time and the signal intensity of the adjacent cell meet the first preset condition, determining whether the signal intensity of the adjacent cell is larger than a signal intensity threshold value set for the terminal equipment. When the terminal equipment is in a connection state, after the RRC layer receives a switching instruction issued by the base station, whether the signal intensity of a neighboring cell carried in a switching instruction message is stronger than a signal intensity threshold value set by the terminal equipment or not is judged. For example, the 2G cell, the signal strength threshold is set to 105dbm; the 3G cell, the signal strength threshold is set to be 108dbm; the signal strength threshold is set to 125dbm for the 4G cell.
Optionally, the second preset condition includes: the first discrimination parameter is greater than or equal to a preset threshold.
Wherein the first discrimination parameter is determined by the absolute value of the difference value between the first function value and the second function value; the first function value is determined by the azimuth angle of the serving cell and the azimuth angle of the terminal equipment; the second function value is determined by the azimuth of the neighboring cell and the azimuth of the terminal device.
Specifically, the first function value and the second function value are determined according to the following formulas:
wherein whenRepresenting the azimuth of the serving cell +.>Representing a first function value; when->When representing the azimuth angle of the neighboring cell, +.>Representing a second function value.
The azimuth angles of the serving cell and the neighboring cell are included angles of the normal directions of the respective cells, and the azimuth angle of the terminal device is included angle of the normal direction of the terminal device. With reference to figure 3 of the drawings,representing the azimuth of the serving cell;representing azimuth angles of neighboring cells; />Representing the azimuth of the terminal device.
For example, based on the setting of the azimuth determination coordinate system in fig. 3, the first determination parameter may be calculated according to the following formula:
f(φ)＝g(|φ s -φ|)-g(|φ k -φ|)
based on the above method, in a realistic scenario, when the signal strengths of two adjacent cells in a certain area change drastically, a "ping-pong handover" problem occurs. In the prior art, when the problem is solved, the ping-pong switching of the terminal equipment cannot be effectively controlled by adopting a timer mode. Therefore, in order to solve the problem, the embodiment of the application increases the judgment condition of the direction angle on the basis of the judgment of the signal intensity. Thus, ping-pong switching of the terminal equipment can be effectively avoided. And the terminal equipment can be connected to the service cell with better signal quality in time, so that the network rate of the terminal equipment is ensured, and the disconnection rate is reduced.
The embodiment of the present invention may divide the functional modules of the cell switching apparatus 102 according to the above-described method embodiment, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present invention, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation.
As shown in fig. 4, a schematic structural diagram of a cell switching device 102 according to an embodiment of the present invention is provided, where the cell switching device 102 specifically includes a receiving unit 401 and a processing unit 402.
Specifically, the receiving unit 401 is configured to receive a measurement report reported by the terminal device from a preset time to a current time; wherein, the measurement report includes: the signal intensity of the serving cell, the signal intensity of the adjacent cell, the azimuth angle of the serving cell, the azimuth angle of the adjacent cell and the azimuth angle of the terminal equipment; the preset time is before the current time. For example, in connection with fig. 2, the receiving unit 401 may be used to perform step 201.
The processing unit 402 is configured to switch the terminal device from the serving cell to the neighboring cell when the signal strength of the serving cell and the signal strength of the neighboring cell from the preset time to the current time received by the receiving unit 401 satisfy a first preset condition, and the azimuth angle of the serving cell, the azimuth angle of the neighboring cell, and the azimuth angle of the terminal device at the current time satisfy a second preset condition. For example, in connection with fig. 2, the receiving unit 401 may be used to perform step 202.
In an exemplary aspect, the first preset condition includes: when the difference value between the signal intensity of the adjacent cell and the signal intensity of the service cell in all measurement reports from the preset time to the current time is larger than the signal intensity hysteresis value of the adjacent cell, and the duration from the preset time to the current time is longer than the triggering delay time of the adjacent cell.
In an exemplary aspect, the second preset condition includes: the first discrimination parameter is larger than or equal to a preset threshold value; wherein the first discrimination parameter is determined by the absolute value of the difference value between the first function value and the second function value; the first function value is determined by the azimuth angle of the serving cell and the azimuth angle of the terminal equipment; the second function value is determined by the azimuth of the neighboring cell and the azimuth of the terminal device.
In one exemplary scenario, the first function value and the second function value are each determined according to the following formula:
wherein whenRepresenting the azimuth of the serving cell +.>Representing a first function value; when->When representing the azimuth angle of the neighboring cell, +.>Representing a second function value.
Of course, the cell switching apparatus 102 provided in the embodiment of the present invention includes, but is not limited to, the above modules, for example, the cell switching apparatus 102 may further include a sending unit 403 and a storage unit 404. The sending unit 403 may be configured to send related data in the cell switching apparatus 102 to other devices, so as to implement data interaction with the other devices. The storage unit 404 may be used for storing the program code of the cell switching device 102, and may also be used for storing data generated by the cell switching device 102 during operation, such as data in a write request, etc.
The system architecture and the service scenario described in the embodiments of the present invention are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided in the embodiments of the present application is equally applicable to similar technical problems.
Fig. 5 is a schematic structural diagram of a cell switching device 102 according to an embodiment of the present invention, and as shown in fig. 5, the cell switching device 102 may include: at least one processor 51, a memory 52, a communication interface 53 and a communication bus 54.
The following describes the respective constituent elements of the cell switching apparatus 102 in detail with reference to fig. 5:
the processor 51 is a control center of the cell switching device 102, and may be one processor or a generic name of a plurality of processing elements. For example, processor 51 is a central processing unit (Central Processing Unit, CPU), but may also be an integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits configured to implement embodiments of the present invention, such as: one or more DSPs, or one or more field programmable gate arrays (Field Programmable Gate Array, FPGAs).
In a particular implementation, processor 51 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 5, as an example. Also, as an example, the cell switching apparatus 102 may include a plurality of processors, such as the processor 51 and the processor 55 shown in fig. 5. Each of these processors may be a Single-core processor (Single-CPU) or a Multi-core processor (Multi-CPU). A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).
The Memory 52 may be, but is not limited to, a Read-Only Memory (ROM) or other type of static storage device that can store static information and instructions, a random access Memory (Random Access Memory, RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable Read-Only Memory (Electrically Erasable Programmable Read-Only Memory, EEPROM), a compact disc (Compact Disc Read-Only Memory, CD-ROM) or other optical disk storage, optical disk storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 52 may be stand alone and be coupled to the processor 51 via a communication bus 54. Memory 52 may also be integrated with processor 51.
In a specific implementation, the memory 52 is used to store data in the present invention and to execute software programs of the present invention. The processor 51 may perform various functions of the air conditioner by running or executing a software program stored in the memory 52 and calling data stored in the memory 52.
The communication interface 53 uses any transceiver-like means for communicating with other devices or communication networks, such as a radio access network (Radio Access Network, RAN), a wireless local area network (Wireless Local Area Networks, WLAN), a terminal, a cloud, etc. The communication interface 53 may include a receiving unit implementing a receiving function and a transmitting unit implementing a transmitting function.
The communication bus 54 may be an industry standard architecture (Industry Standard Architecture, ISA) bus, an external device interconnect (Peripheral Component Interconnect, PCI) bus, or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus, among others. The bus may be classified as an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in fig. 5, but not only one bus or one type of bus.
As an example, in connection with fig. 4, the acquisition unit 101 in the cell switching device 102 implements the same function as the communication interface 53 in fig. 5, the processing unit 102 implements the same function as the processor 51 in fig. 5, and the storage unit 103 implements the same function as the memory 52 in fig. 5.
Another embodiment of the present invention also provides a computer-readable storage medium having stored therein instructions which, when executed on a computer, cause the computer to perform the method shown in the above-described method embodiment.
In some embodiments, the disclosed methods may be implemented as computer program instructions encoded on a computer-readable storage medium in a machine-readable format or encoded on other non-transitory media or articles of manufacture.
Fig. 6 schematically illustrates a conceptual partial view of a computer program product provided by an embodiment of the invention, the computer program product comprising a computer program for executing a computer process on a computing device.
In one embodiment, a computer program product is provided using signal bearing medium 410. The signal bearing medium 410 may include one or more program instructions that when executed by one or more processors may provide the functionality or portions of the functionality described above with respect to fig. 2. Thus, for example, referring to the embodiment shown in fig. 2, one or more features of 201 and 202 may be borne by one or more instructions associated with the signal bearing medium 410. Further, the program instructions in fig. 6 also describe example instructions.
In some examples, signal bearing medium 410 may comprise a computer readable medium 411 such as, but not limited to, a hard disk drive, compact Disk (CD), digital Video Disk (DVD), digital tape, memory, read-only memory (ROM), or random access memory (random access memory, RAM), among others.
In some implementations, the signal bearing medium 410 may include a computer recordable medium 412 such as, but not limited to, memory, read/write (R/W) CD, R/W DVD, and the like.
In some implementations, the signal bearing medium 410 may include a communication medium 413 such as, but not limited to, a digital and/or analog communication medium (e.g., fiber optic cable, waveguide, wired communications link, wireless communications link, etc.).
The signal bearing medium 410 may be conveyed by a communication medium 413 in wireless form (e.g., a wireless communication medium conforming to the IEEE802.41 standard or other transmission protocol). The one or more program instructions may be, for example, computer-executable instructions or logic-implemented instructions.
In some examples, a cell switching apparatus such as described with respect to fig. 4 may be configured to provide various operations, functions, or actions in response to program instructions through one or more of computer readable medium 411, computer recordable medium 412, and/or communication medium 413.
From the foregoing description of the embodiments, it will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of functional modules is illustrated, and in practical application, the above-described functional allocation may be implemented by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to implement all or part of the functions described above.
In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another apparatus, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and the parts displayed as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed in a plurality of different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a readable storage medium. Based on such understanding, the technical solution of the embodiments of the present invention may be essentially or a part contributing to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several instructions for causing a device (may be a single-chip microcomputer, a chip or the like) or a processor (processor) to perform all or part of the steps of the method described in the embodiments of the present invention. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.
In addition, the embodiment of the invention also provides a base station, which comprises the cell switching device 102.
The foregoing is merely illustrative of specific embodiments of the present invention, and the scope of the present invention is not limited thereto, but any changes or substitutions within the technical scope of the present invention should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (7)

1. A method for cell handover, comprising:
receiving a measurement report reported by terminal equipment from a preset time to a current time; wherein, the measurement report includes: the signal intensity of the serving cell, the signal intensity of the adjacent cell, the azimuth angle of the serving cell, the azimuth angle of the adjacent cell and the azimuth angle of the terminal equipment; the preset time is before the current time;
switching the terminal equipment from the service cell to the adjacent cell under the condition that the signal intensity of the service cell from the preset time to the current time and the signal intensity of the adjacent cell meet a first preset condition and the azimuth angle of the service cell, the azimuth angle of the adjacent cell and the azimuth angle of the terminal equipment at the current time meet a second preset condition; the first preset condition includes: when the difference value between the signal intensity of the adjacent cell and the signal intensity of the service cell in all measurement reports from the preset time to the current time is larger than the signal intensity hysteresis value of the adjacent cell, and the duration from the preset time to the current time is longer than the triggering delay time of the adjacent cell; the second preset condition includes: the first discrimination parameter is larger than or equal to a preset threshold value; wherein the first discrimination parameter is determined by the absolute value of the difference value between the first function value and the second function value; the first function value is determined by the azimuth angle of the serving cell and the azimuth angle of the terminal equipment; the second function value is determined by the azimuth angle of the neighboring cell and the azimuth angle of the terminal device.
2. The cell switching method according to claim 1, further comprising:
the first function value and the second function value are both determined according to the following formula:
wherein whenSaid +.>Representing a first function value; when->Representing azimuth angles of the adjacent cellsSaid->Representing a second function value.
3. A cell switching apparatus, comprising:
the receiving unit is used for receiving the measurement report reported by the terminal equipment from the preset moment to the current moment; wherein, the measurement report includes: the signal intensity of the serving cell, the signal intensity of the adjacent cell, the azimuth angle of the serving cell, the azimuth angle of the adjacent cell and the azimuth angle of the terminal equipment; the preset time is before the current time;
a processing unit, configured to switch the terminal device from the serving cell to the neighboring cell when the signal strength of the serving cell and the signal strength of the neighboring cell from the preset time to the current time received by the receiving unit satisfy a first preset condition, and the azimuth angle of the serving cell, the azimuth angle of the neighboring cell, and the azimuth angle of the terminal device at the current time satisfy a second preset condition;
the first preset condition includes: when the difference value between the signal intensity of the adjacent cell and the signal intensity of the service cell in all measurement reports from the preset time to the current time is larger than the signal intensity hysteresis value of the adjacent cell, and the duration from the preset time to the current time is longer than the triggering delay time of the adjacent cell;
the second preset condition includes: the first discrimination parameter is larger than or equal to a preset threshold value; wherein the first discrimination parameter is determined by the absolute value of the difference value between the first function value and the second function value; the first function value is determined by the azimuth angle of the serving cell and the azimuth angle of the terminal equipment; the second function value is determined by the azimuth angle of the neighboring cell and the azimuth angle of the terminal device.
4. A cell switching apparatus according to claim 3, further comprising:
the first function value and the second function value are both determined according to the following formula:
wherein whenSaid +.>Representing a first function value; when->Representing the azimuth angle of said neighboring cell, said +.>Representing a second function value.
5. A base station, comprising: a cell switching arrangement as claimed in any one of claims 3 to 4.
6. A cell switching device, characterized in that the structure of the cell switching device comprises a processor, and the processor is configured to execute program instructions, so that the cell switching device performs the cell switching method according to any one of claims 1-2.
7. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein computer program code which, when run on a cell handover device, causes the cell handover device to perform the cell handover method according to any of claims 1-2.
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