CN113438700B

CN113438700B - Redirection method, redirection device and electronic equipment

Info

Publication number: CN113438700B
Application number: CN202110723574.1A
Authority: CN
Inventors: 倪碧雪; 石书开
Original assignee: Spreadtrum Semiconductor Nanjing Co Ltd
Current assignee: Spreadtrum Semiconductor Nanjing Co Ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2023-04-28
Anticipated expiration: 2041-06-29
Also published as: CN113438700A

Abstract

The application provides a redirection method, a redirection device and electronic equipment, and relates to the technical field of communication. The redirection method comprises the following steps: firstly, directly receiving original resident frequency point information issued by a radio resource control layer of user equipment. And then searching the cell signal of the original resident frequency point by utilizing the first search intensity according to the original resident frequency point information. And finally, determining the cell corresponding to the strongest cell signal in the searched cell signals as a resident cell. Therefore, the time required for redirection can be shortened, and the redirection efficiency is improved.

Description

Redirection method, redirection device and electronic equipment

[ field of technology ]

The present disclosure relates to the field of communications technologies, and in particular, to a redirection method, a redirection device, and an electronic device.

[ background Art ]

In the field of wireless communication, after a user equipment switches between network systems of different standards, such as a third Generation (3G) network system, a long term evolution (Long Term Evolution, LTE) network system, etc., redirection is required, that is, a new network system is searched for camping cells again and camping is implemented.

Currently, when the user equipment performs redirection, the physical layer of the user equipment searches the original resident cell according to the original resident cell information. However, in a mobile scenario, the signal strength of the original camping cell may already be weak. Thus, the current method may cause cell search failure and redirection efficiency is low.

[ invention ]

The embodiment of the application provides a redirection method, a redirection device and electronic equipment, which are used for shortening the time required by redirection and improving the redirection efficiency.

In a first aspect, an embodiment of the present application provides a redirection method, where the method is applied to a physical layer of a user equipment, and includes: directly receiving original resident frequency point information issued by a radio resource control layer of the user equipment; searching the cell signal of the original resident frequency point by utilizing first search intensity according to the original resident frequency point information; and determining the cell corresponding to the strongest cell signal in the searched cell signals as a resident cell.

In one possible implementation manner, determining a cell corresponding to the strongest cell signal in the searched cell signals as a camping cell includes: determining whether a neighbor cell exists according to the searched cell signals; and if no neighbor cell exists, determining the cell corresponding to the strongest cell signal in the cell signals as a resident cell.

In one possible implementation manner, determining whether a neighboring cell exists according to the searched cell signals includes: screening the strongest cell signal and the second strongest cell signal from the searched cell signals; and determining whether a neighbor cell exists according to the difference value of the strongest cell signal and the second strongest cell signal.

In one possible implementation manner, determining whether a neighboring cell exists according to a difference value between the strongest cell signal and the second strongest cell signal includes: if the difference value between the strongest cell signal and the second strongest cell signal is larger than a preset threshold value, determining that no neighbor cell exists; and if the difference value is smaller than the preset threshold value, determining that a neighbor cell exists.

In one possible implementation manner, if a neighbor exists, the method further includes: searching the neighbor cell signals of the original resident frequency point by utilizing the first search intensity; screening out the strongest neighbor signals from the searched neighbor signals; and determining a cell corresponding to the signal with the larger value in the strongest neighbor cell signal and the strongest cell signal as a resident cell.

In one possible implementation manner, if no cell signal is searched, the method further includes: and searching the cell signal of the original resident frequency point again by using a second search intensity, wherein the second search intensity is larger than the first search intensity.

In one possible implementation manner, if no cell signal is searched, the method further includes: transmitting a first response message to the radio resource control layer, wherein the first response message is used for indicating cell search failure; and receiving the frequency point information which is re-issued by the radio resource control layer, and searching the cell signal according to the re-issued frequency point information.

In a second aspect, embodiments of the present application provide a redirecting device, including: the receiving module is used for directly receiving the original resident frequency point information issued by the radio resource control layer of the user equipment; the execution module is used for searching the cell signal of the original resident frequency point by utilizing the first search intensity according to the original resident frequency point information; and the determining module is used for determining the cell corresponding to the strongest cell signal in the searched cell signals as a resident cell.

In one possible implementation manner, the determining module is specifically configured to determine whether a neighboring cell exists according to the searched cell signals; and if the determination module determines that no neighbor cell exists, the determination module is further used for determining a cell corresponding to the strongest cell signal in the cell signals as a resident cell.

In one possible implementation manner, the determining module is specifically configured to screen out a strongest cell signal and a second strongest cell signal from the searched cell signals; and determining whether a neighbor cell exists according to the difference value of the strongest cell signal and the second strongest cell signal.

In one possible implementation manner, the determining module is specifically configured to determine that no neighbor cell exists if a difference between the strongest cell signal and the second strongest cell signal is greater than a preset threshold; and if the difference value is smaller than the preset threshold value, determining that a neighbor cell exists.

In one possible implementation manner, if there is a neighbor cell, the execution module is further configured to: searching the neighbor cell signals of the original resident frequency point by utilizing the first search intensity; screening out the strongest neighbor signals from the searched neighbor signals; and determining a cell corresponding to the signal with the larger value in the strongest neighbor cell signal and the strongest cell signal as a resident cell.

In one possible implementation manner, if the execution module does not search for a cell signal, the execution module is further configured to re-search for the cell signal of the original camping frequency point with a second search strength, where the second search strength is greater than the first search strength.

In one possible implementation manner, if the execution module does not search for a cell signal, the execution module is further configured to send a first response message to the radio resource control layer, where the first response message is used to indicate that cell search fails; and receiving the frequency point information which is re-issued by the radio resource control layer, and searching the cell signal according to the re-issued frequency point information.

In a third aspect, an embodiment of the present application provides an electronic device, including: at least one processor; and at least one memory communicatively coupled to the processor, wherein: the memory stores program instructions executable by the processor, the processor invoking the program instructions capable of performing the method according to the first aspect.

In a fourth aspect, embodiments of the present application provide a chip, where the chip includes a processor and a data interface, where the processor reads instructions stored on a memory through the data interface, and is capable of performing the method according to the first aspect.

In a fifth aspect, embodiments of the present application provide a computer-readable storage medium storing computer instructions that cause the computer to perform the method according to the first aspect.

In the above technical solution, first, the original resident frequency point information issued by the radio resource control layer of the user equipment is directly received. And then searching the cell signal of the original resident frequency point by utilizing the first search intensity according to the original resident frequency point information. And finally, determining whether a neighbor cell exists according to the searched cell signals. And if the neighbor cells do not exist, determining the cell corresponding to the strongest cell signal in the cell signals as a resident cell. Therefore, the time required for redirection can be shortened, and the redirection efficiency is improved.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a user equipment according to an embodiment of the present application;

FIG. 2 is a flow chart of a redirection method provided in an embodiment of the present application;

FIG. 3 is a flow chart of another redirection method provided in an embodiment of the present application;

FIG. 4 is a flow chart of another redirection method provided in an embodiment of the present application;

FIG. 5 is a flow chart of another redirection method provided in an embodiment of the present application;

FIG. 6 is a flow chart of another redirection method provided in an embodiment of the present application;

FIG. 7 is a flow chart of another redirection method provided in an embodiment of the present application;

fig. 8 is a schematic structural diagram of a redirecting device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

[ detailed description ] of the invention

For a better understanding of the technical solutions of the present application, embodiments of the present application are described in detail below with reference to the accompanying drawings.

It should be understood that the described embodiments are merely some, but not all, of the embodiments of the present application. All other embodiments, based on the embodiments herein, which would be apparent to one of ordinary skill in the art without making any inventive effort, are intended to be within the scope of the present application.

The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

Fig. 1 is a schematic structural diagram of a user equipment according to an embodiment of the present application. As shown in fig. 1, a user equipment 100 provided in an embodiment of the present application may include a physical layer 20 and a radio resource control layer 30. The redirection method provided in the embodiment of the present application may be applied to the physical layer 20.

Fig. 2 is a flowchart of a redirection method provided in an embodiment of the present application, and as shown in fig. 2, the redirection method may include:

step 101, directly receiving original resident frequency point information issued by a radio resource control layer of user equipment.

In this embodiment of the present application, after the communication link of the original network system is released, the physical layer of the ue does not receive the original resident cell search request issued by the radio resource control layer any more, but directly receives the original resident frequency point search request issued by the radio resource control layer. The original resident frequency point search request may include original resident frequency point information. The original resident frequency point may be a frequency point where the user equipment resides in the network system to be resident.

Step 102, searching the cell signal of the original resident frequency point by utilizing the first search intensity according to the original resident frequency point information.

After receiving the original dwell frequency point information, automatic gain control (Automatic Gain Contro, AGC) parameters may be set first. AGC may be used to represent the strength of a search for a signal. The greater the AGC, the greater the sensitivity to the signal and the greater the search strength. Accordingly, the greater the power consumption required.

In the embodiment of the application, in order to save power consumption, for example, AGC may be set to middle. The parameter middle may correspond to a first search strength. Further, the cell signal of the original camping frequency point can be searched with the first search strength. In a specific implementation, the cell signal may be a primary synchronization signal (Primary Synchronization Signal, PSS)/secondary synchronization signal (Secondary Synchronization Signal, SSS) signal. The specific method for searching the PSS/SSS signal is the prior art and will not be described in detail.

In the embodiment of the application, the original resident cell is not searched any more, and the cell signal under the original resident frequency point is searched directly according to the original resident frequency point information. Thereby saving searching time to a certain extent and improving redirecting efficiency.

And step 103, determining the cell corresponding to the strongest cell signal in the searched cell signals as a resident cell.

In the embodiment of the present application, the strongest cell signal may be the PSS/SSS signal with the highest correlation peak.

In the above technical solution, when redirection is performed, the original resident cell information issued by the radio resource control layer is not received any more, and the original resident cell is not searched any more. And directly receiving original resident frequency point information issued by the radio resource control layer, so as to search the cell signal under the original resident frequency point according to the original resident frequency point information. Therefore, the cell searching time can be saved, and the redirection efficiency is improved.

Fig. 3 is a flowchart of a redirection method provided in an embodiment of the present application, where, as shown in fig. 3, the redirection method may include:

step 201, directly receiving original resident frequency point information issued by a radio resource control layer of the user equipment.

Step 202, searching the cell signal of the original resident frequency point by utilizing the first searching strength according to the original resident frequency point information.

Step 203, determining whether a neighbor cell exists according to the searched cell signals. If not, then step 204 is performed; otherwise, step 205 is performed.

In the embodiment of the present application, first, the strongest cell signal and the second strongest cell signal may be selected from the searched cell signals. In one particular implementation, the strongest cell signal may be the PSS/SSS signal with the highest correlation peak. The second strongest cell signal may be the PSS/SSS signal with the next highest correlation peak.

Then, whether a neighbor cell exists can be determined according to the difference value of the strongest cell signal and the second strongest cell signal. Specifically, if the difference between the strongest cell signal and the second strongest cell signal is greater than a preset threshold, it may be determined that no neighbor cell exists or that the neighbor cell signal is weak. If the difference is less than the preset threshold, it may be determined that a neighbor exists. The value of the preset threshold value can be set according to actual conditions.

And 204, determining a cell corresponding to the strongest cell signal in the cell signals as a resident cell.

When it is determined that there is no neighbor cell or that the neighbor cell signal is weak, the neighbor cell search process may be omitted, and the cell corresponding to the strongest cell signal may be directly determined as the camping cell. Thus, the time consuming redirection can be reduced to some extent.

And 205, searching the neighbor signals of the original resident frequency point by using the first search intensity.

When it is determined that a neighbor exists, a search may be performed on the neighbor to determine whether a stronger-signal neighbor exists.

And 206, screening out the strongest neighbor signals from the searched neighbor signals.

In step 207, the cell corresponding to the signal with the larger value in the strongest neighbor cell signal and the strongest cell signal is determined as the resident cell.

In the above technical solution, first, the original resident frequency point information issued by the radio resource control layer of the ue may be directly received. Then, according to the original resident frequency point information, searching the cell signal of the original resident frequency point by utilizing the first searching strength. And finally, determining whether a neighbor cell exists according to the searched cell signals. And if the neighbor cells do not exist, determining the cell corresponding to the strongest cell signal in the cell signals as a resident cell. Therefore, the time required for redirection can be shortened, and the redirection efficiency is improved.

In another embodiment of the present application, as shown in fig. 4, after the step 207, the following procedure may be further included:

step 208, the resident cell information is reported to the radio resource control layer.

In the embodiment of the present application, the residence cell information may be reported to the radio resource control layer, and the radio resource control layer determines whether to reside.

Step 209, receiving a camping notification sent by the radio resource control layer, and camping according to the camping notification.

Fig. 5 is a flowchart of another redirection method provided in the embodiment of the present application, and as shown in fig. 5, the redirection method provided in the embodiment of the present application may include:

step 301, directly receiving original resident frequency point information issued by a radio resource control layer of the user equipment.

Step 302, searching the cell signal of the original resident frequency point by utilizing the first searching strength according to the original resident frequency point information.

Step 303, it is determined whether a cell signal is searched. If yes, go to step 304; otherwise, step 310 is performed.

Step 304, determining whether a neighbor cell exists according to the searched cell signals. If not, then step 305 is performed; otherwise, step 306 is performed.

In step 305, the cell corresponding to the strongest cell signal in the cell signals is determined as the camping cell.

And 306, searching the neighbor signals of the original resident frequency point by using the first search intensity.

Step 307 determines if a neighbor signal is searched. If so, then step 308 is performed; otherwise, step 305 is performed.

And step 308, screening out the strongest neighbor signals from the searched neighbor signals.

In step 309, the cell corresponding to the signal with the larger value in the strongest neighbor cell signal and the strongest cell signal is determined as the camping cell.

And 310, searching the cell signal of the original resident frequency point again by using a second search intensity, wherein the second search intensity is larger than the first search intensity.

In the embodiment of the present application, if no cell signal is searched, the gear of the AGC may be reset. For example, it may be reset to high, corresponding to the second search strength. Further, the cell signal may be re-searched with the second search strength. The second search intensity is greater than the first search intensity.

By the method provided by the embodiment of the application, the cell signals can be searched in sequence with different search intensities, so that the redirecting efficiency is ensured, and meanwhile, the power consumption is saved.

Fig. 6 is a flowchart of another redirection method provided in the embodiment of the present application, and as shown in fig. 6, the redirection method provided in the embodiment of the present application may include:

step 401, directly receiving original resident frequency point information issued by a radio resource control layer of the user equipment.

Step 402, searching the cell signal of the original resident frequency point by utilizing the first searching strength according to the original resident frequency point information.

Step 403, it is determined whether a cell signal is searched. If so, then step 404 is performed; otherwise, step 409 is performed.

Step 404, determining whether a neighbor cell exists according to the searched cell signals. If not, then step 405 is performed; otherwise, step 406 is performed.

In step 405, the cell corresponding to the strongest cell signal in the cell signals is determined as the camping cell.

And step 406, searching the neighbor cell signals of the original resident frequency point by utilizing the first search intensity.

Step 407, selecting the strongest neighbor signal from the searched neighbor signals.

In step 408, the cell corresponding to the signal with the larger value in the strongest neighbor cell signal and the strongest cell signal is determined as the resident cell.

Step 409, sending a first response message to the radio resource control layer, where the first response message is used to indicate that the cell search fails.

Step 410, receiving the frequency point information re-issued by the radio resource control layer, and searching the cell signal according to the re-issued frequency point information.

In this embodiment of the present application, if the original resident frequency point does not search for the cell signal, a first response message may be sent to the radio resource control layer to indicate that the cell search fails. Then, cell search may be performed again according to the frequency point information re-issued by the radio resource control layer. Thereby improving the success rate of redirection.

Fig. 7 is a flowchart of another redirection method provided in the embodiment of the present application, and as shown in fig. 7, the redirection method provided in the embodiment of the present application may include:

step 501, directly receiving original resident frequency point information issued by a radio resource control layer of user equipment.

Step 502, searching the cell signal of the original resident frequency point by utilizing the first searching strength according to the original resident frequency point information.

Step 503 determines whether a cell signal is searched. If so, then step 504 is performed; otherwise, step 511 is performed.

Step 504, according to the searched cell signals, determining whether there is a neighboring cell. If not, then step 505 is performed; otherwise, step 506 is performed.

In step 505, the cell corresponding to the strongest cell signal in the cell signals is determined as the camping cell.

And step 506, searching the neighbor signals of the original resident frequency point by using the first search intensity.

Step 507, it is determined whether a neighbor signal is searched. If so, step 508 is performed; otherwise, step 505 is performed.

And step 508, screening out the strongest neighbor signals from the searched neighbor signals.

In step 509, the cell corresponding to the signal with the larger value from the strongest neighbor cell signal and the strongest cell signal is determined as the camping cell.

And 510, searching the cell signal of the original resident frequency point again by using a second search intensity, wherein the second search intensity is larger than the first search intensity.

Step 511 determines whether a cell signal is searched. If so, go to step 504; otherwise, step 512 is performed.

And step 512, searching the cell signal of the original resident frequency point again by using a third searching strength, wherein the third searching strength is smaller than the first searching strength.

Step 513 determines if a cell signal is searched. If so, go to step 504; otherwise, step 514 is performed.

Step 514, a first response message is sent to the radio resource control layer, where the first response message is used to indicate that the cell search fails.

Step 515, receiving the frequency point information re-issued by the radio resource control layer, and searching the cell signal according to the re-issued frequency point information.

Fig. 8 is a schematic structural diagram of a redirecting device according to an embodiment of the present application. As shown in fig. 8, the redirecting means may include: a receiving module 71, an executing module 72 and a determining module 73.

And the receiving module 71 is configured to directly receive the original resident frequency point information issued by the radio resource control layer of the user equipment.

And the execution module 72 is configured to search the cell signal of the original camping frequency point with the first search strength according to the original camping frequency point information.

The determining module 73 is configured to determine, as the camping cell, a cell corresponding to the strongest cell signal among the searched cell signals.

In a specific implementation manner, the determining module 73 is specifically configured to determine whether a neighbor cell exists according to the searched cell signals. The determining module 73 is further configured to determine a cell corresponding to a strongest cell signal of the cell signals as a camping cell if it is determined that no neighbor cell exists.

In a specific implementation manner, the determining module 73 is specifically configured to screen out a strongest cell signal and a second strongest cell signal from the searched cell signals; and determining whether a neighbor cell exists according to the difference value of the strongest cell signal and the second strongest cell signal.

In a specific implementation manner, the determining module 73 is specifically configured to determine that no neighbor cell exists if the difference between the strongest cell signal and the second strongest cell signal is greater than a preset threshold; and if the difference value is smaller than the preset threshold value, determining that a neighbor cell exists.

In a specific implementation, if there is a neighbor, the execution module 72 is further configured to: searching the neighbor cell signals of the original resident frequency point by using the first search intensity; screening out the strongest neighbor signals from the searched neighbor signals; and determining a cell corresponding to the signal with the larger value in the strongest neighbor cell signal and the strongest cell signal as a resident cell.

In a specific implementation manner, if the execution module 72 does not search for the cell signal, the execution module 72 is further configured to re-search for the cell signal of the original camping frequency point with a second search strength, where the second search strength is greater than the first search strength.

In a specific implementation manner, if the execution module 72 does not search for a cell signal, the execution module is further configured to send a first response message to the radio resource control layer, where the first response message is used to indicate that the cell search fails; and receiving the frequency point information which is re-issued by the radio resource control layer, and searching the cell signal according to the re-issued frequency point information.

In this embodiment, first, the receiving module 71 may directly receive the original resident frequency point information issued by the radio resource control layer of the ue. Then, the execution module 72 may search the cell signal of the original camping frequency point with the first search strength according to the original camping frequency point information. Finally, the determining module 73 may determine whether a neighbor cell exists according to the searched cell signals. And if the neighbor cells do not exist, determining the cell corresponding to the strongest cell signal in the cell signals as a resident cell. Therefore, the time required for redirection can be shortened, and the redirection efficiency is improved.

Fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in fig. 9, the electronic device may include at least one processor; and at least one memory communicatively coupled to the processor, wherein: the memory stores program instructions executable by the processor, and the processor invokes the program instructions to perform the redirection method provided in the embodiments of the present application.

The electronic device may be a redirecting device, and the specific form of the electronic device is not limited in this embodiment.

Fig. 9 illustrates a block diagram of an exemplary electronic device suitable for use in implementing embodiments of the present application. The electronic device shown in fig. 9 is only an example, and should not impose any limitation on the functionality and scope of use of the embodiments of the present application.

As shown in fig. 9, the electronic device is in the form of a general purpose computing device. Components of an electronic device may include, but are not limited to: one or more processors 410, a memory 430, and a communication bus 440 that connects the different system components (including the memory 430 and the processor 410).

The communication bus 440 represents one or more of any of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus architectures. By way of example, and not limitation, such architectures include industry Standard architecture (Industry Standard Architecture; hereinafter ISA) bus, micro channel architecture (Micro Channel Architecture; hereinafter MAC) bus, enhanced ISA bus, video electronics standards Association (Video Electronics Standards Association; hereinafter VESA) local bus, and peripheral component interconnect (Peripheral Component Interconnection; hereinafter PCI) bus.

Electronic devices typically include a variety of computer system readable media. Such media can be any available media that can be accessed by the electronic device and includes both volatile and nonvolatile media, removable and non-removable media.

Memory 430 may include computer system readable media in the form of volatile memory, such as random access memory (Random Access Memory; hereinafter: RAM) and/or cache memory. The electronic device may further include other removable/non-removable, volatile/nonvolatile computer system storage media. Although not shown in fig. 9, a magnetic disk drive for reading from and writing to a removable nonvolatile magnetic disk (e.g., a "floppy disk"), and an optical disk drive for reading from or writing to a removable nonvolatile optical disk (e.g., a compact disk read only memory (Compact Disc Read Only Memory; hereinafter CD-ROM), digital versatile read only optical disk (Digital Video Disc Read Only Memory; hereinafter DVD-ROM), or other optical media) may be provided. In such cases, each drive may be coupled to communication bus 440 by one or more data medium interfaces. Memory 430 may include at least one program product having a set (e.g., at least one) of program modules configured to carry out the functions of the embodiments of the present application.

A program/utility having a set (at least one) of program modules may be stored in the memory 430, such program modules including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment. Program modules generally perform the functions and/or methods in the embodiments described herein.

The electronic device may also communicate with one or more external devices (e.g., keyboard, pointing device, display, etc.), with one or more devices that enable a user to interact with the electronic device, and/or with any device (e.g., network card, modem, etc.) that enables the electronic device to communicate with one or more other computing devices. Such communication may occur through communication interface 420. Moreover, the electronic device may also communicate with one or more networks (e.g., local area network (Local Area Network; hereinafter: LAN), wide area network (Wide Area Network; hereinafter: WAN) and/or a public network, such as the Internet) via a network adapter (not shown in FIG. 9) that may communicate with other modules of the electronic device via the communication bus 440. It should be appreciated that although not shown in fig. 9, other hardware and/or software modules may be used in connection with an electronic device, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, disk arrays (Redundant Arrays of Independent Drives; hereinafter RAID) systems, tape drives, data backup storage systems, and the like.

The processor 410 executes various functional applications and redirection by running programs stored in the memory 430, for example, implementing the redirection method provided in the embodiments of the present application.

The embodiment of the application also provides a computer readable storage medium, and the computer readable storage medium stores computer instructions, which enable the computer to execute the redirection method provided by the embodiment of the application.

Any combination of one or more computer readable media may be utilized as the above-described computer readable storage media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read-Only Memory (ROM), an erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory; EPROM) or flash Memory, an optical fiber, a portable compact disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and additional implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present application.

It should be noted that, the terminal according to the embodiments of the present application may include, but is not limited to, a personal Computer (Personal Computer; hereinafter referred to as a PC), a personal digital assistant (Personal Digital Assistant; hereinafter referred to as a PDA), a wireless handheld device, a Tablet Computer (Tablet Computer), a mobile phone, an MP3 player, an MP4 player, and the like.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the elements is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple elements or components may be combined or integrated into another system, 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.

In addition, each functional unit in each embodiment of the present application 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 hardware plus software functional units.

The foregoing description of the preferred embodiments of the present invention is not intended to limit the invention to the precise form disclosed, and any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A redirection method, wherein the method is applied to a physical layer of a user equipment, and comprises:

directly receiving original resident frequency point information issued by a radio resource control layer of the user equipment; the original resident frequency point is a frequency point where the user equipment resides in the network system to be resident at present;

searching the cell signal of the original resident frequency point by utilizing first search intensity according to the original resident frequency point information;

determining a cell corresponding to the strongest cell signal in the searched cell signals as a resident cell;

among the searched cell signals, a cell corresponding to the strongest cell signal is determined to be a resident cell, which includes:

determining whether a neighbor cell exists according to the searched cell signals;

if no neighbor cell exists, determining a cell corresponding to the strongest cell signal in the cell signals as a resident cell;

if the adjacent cells exist, searching the adjacent cell signals of the original resident frequency points by using the first search intensity; screening out the strongest neighbor signals from the searched neighbor signals; and determining a cell corresponding to the signal with the larger value in the strongest neighbor cell signal and the strongest cell signal as a resident cell.

2. The method of claim 1, wherein determining whether a neighbor exists based on the searched respective cell signals comprises:

screening the strongest cell signal and the second strongest cell signal from the searched cell signals;

and determining whether a neighbor cell exists according to the difference value of the strongest cell signal and the second strongest cell signal.

3. The method of claim 2, wherein determining whether a neighbor cell exists based on a difference between the strongest cell signal and the second strongest cell signal comprises:

if the difference value between the strongest cell signal and the second strongest cell signal is larger than a preset threshold value, determining that no neighbor cell exists;

and if the difference value is smaller than the preset threshold value, determining that a neighbor cell exists.

4. The method according to claim 1, wherein if no cell signal is searched, the method further comprises:

and searching the cell signal of the original resident frequency point again by using a second search intensity, wherein the second search intensity is larger than the first search intensity.

5. The method according to claim 1, wherein if no cell signal is searched, the method further comprises:

transmitting a first response message to the radio resource control layer, wherein the first response message is used for indicating cell search failure;

and receiving the frequency point information which is re-issued by the radio resource control layer, and searching the cell signal according to the re-issued frequency point information.

6. A redirecting device, comprising:

the receiving module is used for directly receiving the original resident frequency point information issued by the radio resource control layer of the user equipment; the original resident frequency point is a frequency point where the user equipment resides in the network system to be resident at present;

the execution module is used for searching the cell signal of the original resident frequency point by utilizing the first search intensity according to the original resident frequency point information;

the determining module is used for determining a cell corresponding to the strongest cell signal in the searched cell signals as a resident cell;

the determining module is specifically configured to determine whether a neighboring cell exists according to the searched cell signals;

if the adjacent cell exists, the execution module is further used for searching the adjacent cell signal of the original resident frequency point by utilizing the first search intensity; screening out the strongest neighbor signals from the searched neighbor signals; and determining a cell corresponding to the signal with the larger value in the strongest neighbor cell signal and the strongest cell signal as a resident cell.

7. An electronic device, comprising:

at least one processor; and

at least one memory communicatively coupled to the processor, wherein:

the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the method of any of claims 1-5.

8. A computer readable storage medium storing computer instructions for causing a computer to perform the method of any one of claims 1 to 5.