CN114244467A - Cell search method and device - Google Patents
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- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
Abstract
The application provides a cell search method and a cell search device, which are applied to electronic equipment in the field of communication, wherein the electronic equipment comprises a plurality of available receiving channels, and the method comprises the following steps: simultaneously, searching suspected signals in different segmented frequency bands by using a plurality of available receiving channels according to a preset receiving bandwidth and scanning gain; analyzing the searched suspected signal to try to initiate cell access; and the segmented frequency band is obtained by segmenting the frequency band to be searched according to the number of the available receiving channels, and the signal intensity of the suspected signal is not less than a pre-configured signal intensity threshold value corresponding to the scanning gain of the available receiving channel for searching the suspected signal. In the above scheme, since the multiple segment frequency bands can be searched simultaneously, and only when the suspected signal is searched, the suspected signal is analyzed to attempt to initiate cell access, the search time can be reduced, and the search efficiency can be improved.
Description
Technical Field
The present application relates to the field of communications, and in particular, to a cell search method and apparatus.
Background
The mobile terminal can access the network by searching a cell during the power-on phase. In the prior art, in a power-on access stage of a mobile terminal, a path of a receiver access is generally opened, then frequency bands supported by the mobile terminal are sequentially scanned one by one in a certain sequence, signal detection is performed at each frequency point, then a received signal is tried to be demodulated, cell information is demodulated, then access is initiated, and finally access is achieved. However, with this search method, if the cell information cannot be searched at one frequency point, the next frequency point search is switched in, so that each frequency point needs to be searched in sequence, and therefore, a large amount of time needs to be consumed and the search efficiency is low, and the mobile terminal cannot be accessed into the network in time.
Disclosure of Invention
An object of the embodiments of the present invention is to provide a cell search method and apparatus, so as to solve the technical problems of long time consumption and low efficiency.
In a first aspect, an embodiment of the present application provides a cell search method, where the cell search method is applied to an electronic device, where the electronic device includes a plurality of available receiving channels, and the cell search method includes: simultaneously, searching suspected signals in different segmented frequency bands by using a plurality of available receiving channels according to a preset receiving bandwidth and scanning gain; analyzing the searched suspected signal to try to initiate cell access; and the segmented frequency band is obtained by segmenting the frequency band to be searched according to the number of the available receiving channels, and the signal intensity of the suspected signal is not less than a pre-configured signal intensity threshold value corresponding to the scanning gain of the available receiving channel for searching the suspected signal. In the above scheme, the frequency band to be searched is divided into a plurality of segmented frequency bands, so that after a plurality of receiving channels on the electronic device are opened, each available receiving channel can search a part of frequency bands, and since the plurality of segmented frequency bands can be searched simultaneously, and only when a suspected signal is searched, the suspected signal is analyzed to try to initiate cell access, the searching time can be reduced, and the searching efficiency can be improved.
In an alternative embodiment, the scanning gain of at least one of the available receiving channels includes gains of a plurality of steps, and the gains of different steps respectively correspond to different signal strength threshold values; for each of the available receiving channels, the searching for the suspected signal in different segmented frequency bands by simultaneously using the multiple available receiving channels according to the preconfigured receiving bandwidth and scanning gain includes: searching the segmented frequency band corresponding to the available receiving channel according to the receiving bandwidth and the gain of the first gear; if no suspected signal is searched, searching the segmented frequency band corresponding to the available receiving channel according to the receiving bandwidth and the gain of the second gear; the gain of the second gear is larger than the gain of the first gear, and the signal strength threshold value corresponding to the gain of the second gear is smaller than the signal strength threshold value corresponding to the gain of the first gear. In the above scheme, gains of a plurality of gears may be configured in advance, a segmented frequency band is searched by the gain of the first gear, and if no suspected signal is searched, a segmented frequency band may be searched by the gain of the second gear. Therefore, the signal with the signal strength meeting the condition can be searched as much as possible, and the cell with the better signal strength is accessed preferentially.
In an optional embodiment, for each of the available receiving channels, the performing, by using a plurality of the available receiving channels simultaneously, a suspected signal search in different segmented frequency bands according to a pre-configured receiving bandwidth and a pre-configured scanning gain respectively includes: searching a first frequency band in the segmented frequency bands according to the receiving bandwidth and the scanning gain; and if no suspected signal is searched in the first frequency band, searching a second frequency band in the segmented frequency bands according to the receiving bandwidth and the scanning gain. In the above scheme, the first frequency band, the second frequency band, and the like in one segmented frequency band may be sequentially searched, and only when the suspected signal is searched, the suspected signal is analyzed to try to initiate cell access, so that the searching time is further reduced, and the searching efficiency is improved.
In an optional embodiment, after the analyzing the searched suspected signal to attempt to initiate cell access, the cell search method further includes: if the cell access is successful, determining the suspected signal as an available signal, and recording the information of the available signal; and if the cell access is not successful, continuously executing the step of searching the suspected signals in different segmented frequency bands by simultaneously utilizing the plurality of available receiving channels according to the preset receiving bandwidth and scanning gain. In the above solution, when the cell is successfully accessed, the information of the available signal for access may be recorded, so that a subsequent attempt to access the cell may be directly made based on the information of the available signal; when the cell is not successfully accessed, the searching can be continued, and when the suspected signal is searched, the suspected signal is analyzed to try to initiate the cell access, so that the searching time is reduced, and the searching efficiency is improved.
In an optional embodiment, after the analyzing the searched suspected signal to attempt to initiate cell access, the cell search method further includes: if the cell access is successful, the step of searching suspected signals in different segmented frequency bands by simultaneously utilizing the plurality of available receiving channels according to the preset receiving bandwidth and scanning gain is continuously executed, and the information of the searched suspected signals is recorded. In the scheme, even if the cell is successfully accessed, the search can be continued, and the information of each suspected signal searched is recorded, so that the information of the suspected signal can be directly inquired in the following process, the search is not required to be carried out again, and the search time is reduced.
In an optional embodiment, after the simultaneously searching for the suspected signal in different segmented frequency bands by using the multiple available receiving channels according to the preconfigured receiving bandwidths and scanning gains, respectively, the cell searching method further includes: and recording the searched information of the suspected signal. In the above scheme, in the searching process, the information of each searched suspected signal can be recorded, so that the information of the suspected signal can be directly inquired in the following process, the searching is not required to be performed again, and the searching time is reduced.
In a second aspect, an embodiment of the present application provides a cell search apparatus, where the cell search apparatus is applied to an electronic device, where the electronic device includes a plurality of available receiving channels, and the cell search apparatus includes: the searching module is used for searching suspected signals in different segmented frequency bands by utilizing the plurality of available receiving channels according to the preset receiving bandwidth and scanning gain; the analysis module is used for analyzing the searched suspected signal to try to initiate cell access; and the segmented frequency band is obtained by segmenting the frequency band to be searched according to the number of the available receiving channels, and the signal intensity of the suspected signal is not less than that of the suspected signal which is configured in advance corresponding to the scanning gain of the available receiving channels. In the above scheme, the frequency band to be searched is divided into a plurality of segmented frequency bands, so that after a plurality of receiving channels on the electronic device are opened, each available receiving channel can search a part of frequency bands, and since the plurality of segmented frequency bands can be searched simultaneously, and only when a suspected signal is searched, the suspected signal is analyzed to try to initiate cell access, the searching time can be reduced, and the searching efficiency can be improved.
In an alternative embodiment, the scanning gain of at least one of the available receiving channels includes gains of a plurality of steps, and the gains of different steps respectively correspond to different signal strength threshold values; for each of the available receive channels, the search module is specifically configured to: searching the segmented frequency band corresponding to the available receiving channel according to the receiving bandwidth and the gain of the first gear; if no suspected signal is searched, searching the segmented frequency band corresponding to the available receiving channel according to the receiving bandwidth and the gain of the second gear; the gain of the second gear is larger than the gain of the first gear, and the signal strength threshold value corresponding to the gain of the second gear is smaller than the signal strength threshold value corresponding to the gain of the first gear. In the above scheme, gains of a plurality of gears may be configured in advance, a segmented frequency band is searched by the gain of the first gear, and if no suspected signal is searched, a segmented frequency band may be searched by the gain of the second gear. Therefore, the signal with the signal strength meeting the condition can be searched as much as possible, and the cell with the better signal strength is accessed preferentially.
In an alternative embodiment, for each of the available receiving channels, the searching module is specifically configured to: searching a first frequency band in the segmented frequency bands according to the receiving bandwidth and the scanning gain; and if no suspected signal is searched in the first frequency band, searching a second frequency band in the segmented frequency bands according to the receiving bandwidth and the scanning gain. In the above scheme, the first frequency band, the second frequency band, and the like in one segmented frequency band may be sequentially searched, and only when the suspected signal is searched, the suspected signal is analyzed to try to initiate cell access, so that the searching time is further reduced, and the searching efficiency is improved.
In an optional embodiment, the cell search apparatus further includes: a determining module, configured to determine that the suspected signal is an available signal and record information of the available signal if the cell access is successful; if the cell access is not successful, the searching module continues to execute the step of searching the suspected signals in different segmented frequency bands by simultaneously utilizing the plurality of available receiving channels according to the preset receiving bandwidth and scanning gain. In the above solution, when the cell is successfully accessed, the information of the available signal for access may be recorded, so that a subsequent attempt to access the cell may be directly made based on the information of the available signal; when the cell is not successfully accessed, the searching can be continued, and when the suspected signal is searched, the suspected signal is analyzed to try to initiate the cell access, so that the searching time is reduced, and the searching efficiency is improved.
In an optional embodiment, the cell search apparatus further includes: if the cell access is successful, the searching module continues to execute the step of simultaneously utilizing the plurality of available receiving channels to respectively search the suspected signals in different segmented frequency bands according to the preset receiving bandwidth and scanning gain, and records the searched information of the suspected signals. In the scheme, even if the cell is successfully accessed, the search can be continued, and the information of each suspected signal searched is recorded, so that the information of the suspected signal can be directly inquired in the following process, the search is not required to be carried out again, and the search time is reduced.
In an optional embodiment, the cell search apparatus further includes: and the recording module is used for recording the searched information of the suspected signal. In the above scheme, in the searching process, the information of each searched suspected signal can be recorded, so that the information of the suspected signal can be directly inquired in the following process, the searching is not required to be performed again, and the searching time is reduced.
In a third aspect, an embodiment of the present application provides an electronic device, including: a processor, a memory, and a bus; the processor and the memory are communicated with each other through the bus; the memory stores program instructions executable by the processor, the processor invoking the program instructions to enable performance of the cell search method according to the first aspect.
In a fourth aspect, embodiments of the present application provide a non-transitory computer-readable storage medium storing computer instructions which, when executed by a computer, cause the computer to perform the cell search method according to the first aspect.
In a fifth aspect, a computer program product comprising a computer program which, when executed by a processor, implements the cell search method according to the first aspect.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a block diagram of an electronic device according to an embodiment of the present disclosure;
fig. 2 is a flowchart of a cell search method according to an embodiment of the present application;
fig. 3 is a block diagram of a cell search apparatus according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
Before introducing the cell search method provided by the embodiment of the present application, a main body for executing the cell search method is first introduced, where the cell search method provided by the embodiment of the present application may be applied to an electronic device.
Referring to fig. 1, fig. 1 is a block diagram of an electronic device according to an embodiment of the present disclosure, where the electronic device 100 includes: at least one processor 101, at least one communication interface 102, at least one memory 103, and at least one communication bus 104. Wherein, the communication bus 104 is used for realizing direct connection communication of these components, the communication interface 102 is used for communicating signaling or data with other node devices, and the memory 103 stores machine readable instructions executable by the processor 101. When the electronic device 100 is operated, the processor 101 communicates with the memory 103 through the communication bus 104, and the machine-readable instructions are called by the processor 101 to execute the cell search method provided by the embodiment of the present application.
For example, the processor 101 of the embodiment of the present application may implement the following method by reading the computer program from the memory 103 through the communication bus 104 and executing the computer program: simultaneously, searching suspected signals in different segmented frequency bands by using a plurality of available receiving channels according to a preset receiving bandwidth and scanning gain; analyzing the searched suspected signal to try to initiate cell access; and the segmented frequency band is obtained by segmenting the frequency band to be searched according to the number of the available receiving channels, and the signal intensity of the suspected signal is not less than a pre-configured signal intensity threshold value corresponding to the scanning gain of the available receiving channel for searching the suspected signal.
The processor 101 may be an integrated circuit chip having signal processing capabilities. The Processor 101 may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components. Which may implement or perform the various methods, steps, and logic blocks disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The Memory 303 may include, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Read Only Memory (EPROM), an electrically Erasable Read Only Memory (EEPROM), and the like.
It will be appreciated that the configuration shown in FIG. 1 is merely illustrative and that electronic device 100 may include more or fewer components than shown in FIG. 1 or have a different configuration than shown in FIG. 1. The components shown in fig. 1 may be implemented in hardware, software, or a combination thereof. In the embodiment of the present application, the electronic device 100 may be, but is not limited to, an entity device such as a desktop, a notebook computer, a smart phone, an intelligent wearable device, and a vehicle-mounted device, and may also be a virtual device such as a virtual machine.
The electronic device provided by the embodiment of the application can be configured in advance before executing the cell search method. As an embodiment, the specific content of the configuration may include: a reception channel available for performing the cell search method, a reception bandwidth of each reception channel performing the cell search method, a scan gain, a signal strength threshold value corresponding to the scan gain, and the like.
First, regarding the receiving channels that can be used to perform the cell search method, the embodiment of the present application does not specifically limit the number of the receiving channels that can be used to perform the cell search method and are configured in advance. All the receiving channels in the electronic device may be pre-configured as receiving channels that can be used for executing the cell search method, or part of the receiving channels in the electronic device may be pre-configured as receiving channels that can be used for executing the cell search method. For example, assume that an electronic device has eight receive channels in total; when the receiving channels are configured in advance, the eight receiving channels can be configured to be all receiving channels which can be used for executing the cell search method, and the six receiving channels can also be configured to be receiving channels which can be used for executing the cell search method.
In addition, in the embodiment of the present application, the number of the receiving channels, which are configured in advance and can be used for executing the cell search method, specifically used for executing the cell search method is also not specifically limited. The method may be used entirely for performing the cell search method or may be used partially for performing the cell search method. For example, assume that an electronic device has eight receiving channels, and the eight receiving channels are configured in advance as receiving channels that can be used for executing the cell search method; when the cell search method is actually executed, all eight receiving channels may be used to execute the cell search method, or six receiving channels may be used to execute the cell search method.
It should be noted that, in the pre-configured receiving channel that can be used for executing the cell search method, only part of the receiving channel is used for executing the cell search method, there may be the following cases: part of the receive channel is being used to do other things, such as: transmitting data, etc.; the signal strength of the partial receiving channels does not meet the requirement, and the like, which is not specifically limited in this application, and those skilled in the art can make appropriate adjustments according to actual situations.
Of course, the receiving channels that can be used to execute the cell search method may not be configured in advance, that is, all the receiving channels are the receiving channels that can be used to execute the cell search method by default.
Secondly, for the receiving bandwidth of each receiving channel executing the cell search method, the receiving bandwidth is the maximum receivable bandwidth of the receiving channel, the receiving bandwidth of each receiving channel can be configured in advance, and when the cell search method is executed subsequently, the signal can be searched by the receiving bandwidth.
Finally, for each receiving channel performing the cell search method, the scanning gain and the signal strength threshold corresponding to the scanning gain are in one-to-one correspondence.
It will be appreciated that, when pre-configured, as an embodiment, only one gain and one corresponding signal strength threshold value may be configured for each receive channel. For example, assuming that the maximum gain of a receiving channel is 60dB, the gain can be configured to be 40dB and the corresponding signal strength threshold value can be configured; alternatively, gain is configured to be 60dB and a corresponding signal strength threshold is configured.
As another embodiment, a plurality of gain stages may be configured for each receiving channel, and each gain stage corresponds to a signal strength threshold value. For example, assuming a maximum gain of 60dB for a receiving channel, gains of three steps of 20dB, 40dB and 60dB can be configured, and the gain of each step corresponds to a signal strength threshold. It will be appreciated that the greater the gain, the smaller the corresponding signal strength threshold value.
In the case of configuring the gains of a plurality of steps, the cell search method may be performed from the step with the smallest gain first, and then the gains may be sequentially increased until the cell search method is performed at the step with the largest gain, so that it may be ensured that the search is performed from the signal with the larger signal strength first.
Based on the electronic device described in the foregoing embodiment, a cell search method provided in the embodiment of the present application is described below.
Referring to fig. 2, fig. 2 is a flowchart of a cell search method according to an embodiment of the present disclosure, where the cell search method is applied to an electronic device, the electronic device includes a plurality of available receiving channels, and the cell search method specifically includes the following steps:
step S201: and simultaneously, searching suspected signals in different segmented frequency bands by using a plurality of available receiving channels according to the preset receiving bandwidth and scanning gain.
Step S202: and analyzing the searched suspected signal to attempt to initiate cell access.
Specifically, the available receiving channel refers to a receiving channel actually used when the cell search method is executed. For example: assuming that an electronic device has eight receiving channels, the eight receiving channels are configured in advance as receiving channels that can be used for executing the cell search method, and when the cell search method is actually executed, two receiving channels are transmitting data, so that only the remaining six receiving channels can be used for executing the cell search method, and thus the six receiving channels can be regarded as available receiving channels for executing the cell search method this time.
The segmented frequency band can be obtained by segmenting the frequency band to be searched according to the number of available receiving channels. The frequency band to be searched refers to the frequency band to be searched by the cell searching method.
For example, the frequency band of the mobile communication is typically 400MHz to 7000MHz, wherein a part of the frequency band is occupied by other communication services (e.g. military, radar, satellite, bank, etc.), and therefore, the frequency band to be searched is typically the frequency band remaining after the occupied frequency band is removed. It can be understood that the frequency band to be searched may also be a part of the frequency bands, and those skilled in the art may make appropriate adjustments according to actual situations.
Therefore, according to the number of the available receiving channels, the frequency band to be searched can be segmented, so that each available receiving channel corresponds to one segmented frequency band. When the frequency band to be searched is segmented, the obtained segmented frequency bands may be unequal, continuous, or overlapped. Taking the frequency band to be searched as the remaining frequency band after the occupied frequency band is removed as an example, assuming that the number of available receiving channels is four, the frequency band to be searched can be divided into four segmented frequency bands of 400MHz-1GHz, 1.6GHz-2.7GHz, 3.3GHz-4.9GHz, and 5GHz-7 GHz.
In the embodiment of the present application, a plurality of available receiving channels may be used to search the corresponding segment bands respectively. Taking one of the available receiving channels as an example, the suspected signal may be searched for a corresponding segmented frequency band according to a preconfigured receiving bandwidth and a scanning gain, and when a suspected signal is searched for by one of the available receiving channels, the electronic device may analyze the searched suspected signal and attempt to initiate cell access.
The suspected signal means that the signal strength is not less than a signal strength threshold value corresponding to an available receiving channel for which the suspected signal is searched. It will be appreciated that when the electronic device searches for a suspected signal, it does not necessarily indicate that the suspected signal is accessible and further attempts to access are required.
As an embodiment, when a signal is searched, it may be directly determined whether the signal strength of the signal is greater than a signal strength threshold, and if so, the signal is a suspected signal.
In another embodiment, the suspected signal may be a valid signal. When a signal is searched, a counter can be used for counting the number of times of receiving the signal, if the number of times is greater than a preset threshold value, the signal can be considered to be valid, then whether the signal strength of the signal is greater than a signal strength threshold value or not is further judged, and if the signal is valid and the signal strength is greater than the signal strength threshold value, the signal is a suspected signal.
In the above scheme, the frequency band to be searched is divided into a plurality of segmented frequency bands, so that after a plurality of receiving channels on the electronic device are opened, each available receiving channel can search a part of frequency bands, and since the plurality of segmented frequency bands can be searched simultaneously, and only when a suspected signal is searched, the suspected signal is analyzed to try to initiate cell access, the searching time can be reduced, and the searching efficiency can be improved.
Further, the scanning gain of at least one available receiving channel provided in the embodiment of the present application includes gains of multiple gears, and the gains of different gears correspond to different signal strength threshold values, in this case, for each available receiving channel, the step S101 may specifically include the following contents:
and step 1), searching the segmented frequency band corresponding to the available receiving channel according to the receiving bandwidth and the gain of the first gear.
And 2) if the suspected signal is not searched, searching the segmented frequency band corresponding to the available receiving channel according to the receiving bandwidth and the gain of the second gear.
Specifically, when a signal is not searched for by one of the available receiving channels, if the number of the preconfigured gains is one, the available receiving channel may directly end the search; if the number of the preconfigured gains is multiple, it can be determined whether there are other available receiving channels to search for suspected signals that can be accessed, if so, the available receiving channels can directly end the search, and if not, the available receiving channels can replace the gains of another gear to continue the search.
In the above manner of continuing the search by replacing the gain of another gear, first, the segmented frequency bands may be sequentially searched by the gain of the first gear. If no signal is searched by the gain of the first gear or the searched signal is not a suspected signal, the search is continued by replacing the gain of the second gear; if other available receiving channels have searched for suspected signals and are accessible during the search, the search may be ended.
In one embodiment, the gain of the second gear may be greater than the gain of the first gear, and the signal strength threshold corresponding to the gain of the second gear may be less than the signal strength threshold corresponding to the gain of the first gear.
It should be noted that, according to different application scenarios, the number of gain steps searched by the electronic device is different. For example: if the number of suspected signals is required to be searched when only one preset gain is provided or the gain of the first gear is used for searching, the electronic equipment can search according to the gain of one gear; or, the number of suspected signals required to be searched may be configured in advance, and after the electronic device searches for gains of some gears, the electronic device may search for the suspected signals required to be searched in the number according to a plurality of preset gains; or, if there is no limitation on the number of suspected signals searched, the electronic device may perform the search according to all preset gains.
In the above scheme, gains of a plurality of gears may be configured in advance, a segmented frequency band is searched by the gain of the first gear, and if no suspected signal is searched, a segmented frequency band may be searched by the gain of the second gear. Therefore, the signal with the signal strength meeting the condition can be searched as much as possible, and the cell with the better signal strength is accessed preferentially.
Further, regardless of the number of the preconfigured gains being one or more, the step S201 may include the following for each gear:
and step 1), searching a first frequency band in the segmented frequency bands according to the receiving bandwidth and the scanning gain.
And 2) if no suspected signal is searched in the first frequency band, searching a second frequency band in the segmented frequency bands according to the receiving bandwidth and the scanning gain.
Specifically, when searching for the segment frequency band, the available receiving channel may not be able to search for the entire segment frequency band at one time due to the limitation of the receiving bandwidth. Therefore, the segmented frequency band can be further segmented and searched according to the size of the receiving bandwidth.
As an implementation, in the pre-configuration process, the search order may be configured at the same time. For example: searching in a small to large order, searching in a large to small order, searching in other preset orders, etc. Taking the receiving bandwidth as 100MHz and the segmented frequency band as 100MHz-1GHz as an example, searching in the order from small to large: searching 100MHz-200MHz, then 200MHz-300MHz, … …, and finally 900MHz-1 GHz; searching in order from big to small: firstly, searching 900MHz-1GHz, then searching 800MHz-900MHz, … … and finally searching 100MHz-200 MHz; search in other preset order: firstly searching 200MHz-300MHz, then searching 900MHz-1GHz, then searching 100MHz-200MHz, … ….
It is to be understood that the first frequency band and the second frequency band in the above embodiments do not represent the size relationship between the frequency bands, but represent the search order between the frequency bands.
As another implementation manner, the search order may not be configured in advance, and the search is performed in the order from small to large by default.
It can be understood that, in the searching process, if a suspected signal is searched in the first frequency band, the searching may be stopped or the first frequency band may be continuously searched according to different application scenarios; if no suspected signal is searched in the first frequency band, the second frequency band can be searched continuously. Of course, if a suspected signal is not searched for by one of the available receiving channels in the first frequency band, but a suspected signal is searched for by another available receiving channel at this time, in some scenarios, the available receiving channel may also stop searching.
It should be noted that, the above embodiment only takes the case that a suspected signal is searched for or not searched for in the first frequency band as an example for description, and the implementation in other frequency bands is similar to the implementation in the first frequency band, and a person skilled in the art may implement the above embodiment in combination, and details are not described here again.
In the above scheme, the first frequency band, the second frequency band, and the like in one segmented frequency band may be sequentially searched, and only when the suspected signal is searched, the suspected signal is analyzed to try to initiate cell access, so that the searching time is further reduced, and the searching efficiency is improved.
Further, the step S202 may specifically include the following steps:
and step 1), demodulating the suspected signal to obtain corresponding cell information.
And step 2), initiating access to the corresponding cell according to the cell information.
In the above scheme, after the suspected signal is searched, the suspected signal can be demodulated to try to access the cell corresponding to the suspected signal, so that the cell corresponding to each searched signal does not need to try to access, and the searching time is saved.
Further, after the above step S202, there are two cases: firstly, the electronic equipment is successfully accessed into a cell; second, the electronic device has not successfully accessed the cell. For the two different situations, the steps performed subsequently by the cell search method provided in the embodiment of the present application may be different. The above two cases will be described in turn.
For a case that the first electronic device successfully accesses the cell, the electronic device may: 1) stopping searching; 2) stopping searching and recording the information of available signals; 3) continuing searching; 4) and continuing searching and recording the searched information of the suspected signal.
Taking the above 2) stopping the search and recording the information of the available signal as an example, after the step S202, the cell search provided in the embodiment of the present application may further include the following contents:
and if the cell access is successful, determining the suspected signal as an available signal, and recording the information of the available signal.
At this time, after successfully accessing the cell, the electronic device may stop searching, for example: the electronic equipment starts up to search the network, and the search can be stopped after the electronic equipment accesses the cell. Of course, after stopping the search, the electronic device may or may not record the information of the available signal according to different actual situations.
Taking the above 4) as an example to continue searching and record the information of the searched suspected signal, after the step S202, the cell search provided in the embodiment of the present application may further include the following contents:
if the cell is successfully accessed, the step of searching suspected signals in different segmented frequency bands by simultaneously utilizing a plurality of available receiving channels according to the preset receiving bandwidth and scanning gain is continuously executed, and the information of the searched suspected signals is recorded.
At this point, the electronic device may continue to search after successfully accessing the cell. For example, the electronic device already resides in the network, but since the electronic device is on the boundary of the cell, the search record can be performed on the neighboring cell so as to avoid searching the network again when the electronic device moves to the neighboring cell. For another example, assuming that the electronic device is a connected mobile phone, only mobile signals are searched for when searching for a network, and at this time, although the electronic device cannot make a call, the electronic device may perform network parking and dialing 110 based on the searched signals in an emergency.
In the searching process, information of each searched suspected signal may be recorded, and as an embodiment, the information of the suspected signal may include cell frequency point information, cell bandwidth information, and the like.
In the embodiment of the present application, the following purposes are provided for recording the suspected signal information: firstly, when a signal of a neighboring cell is searched at a cell boundary, if information of the neighboring cell is recorded in advance, when the electronic device moves into the neighboring cell, the electronic device does not need to search for a network again; secondly, by recording the information of suspected signals in a place, when the place is returned to, the suspected information searched before can be directly accessed by combining the position information, for example: when a certain person makes a difference with Shenzhen for the first time, searching and recording a suspected signal in Shenzhen, then making the person make a difference with Shenzhen the next time, and preferentially selecting the suspected signal stored last time for accessing according to the current GPS positioning information; third, special cases can be dealt with, for example: when a certain base station needs to be switched to another base station for maintenance.
In the above solution, when the cell is successfully accessed, the information of the available signal for access may be recorded, so that a subsequent attempt to access the cell may be directly made based on the information of the available signal; even if the cell is successfully accessed, the search can be continued, and the information of each suspected signal searched is recorded, so that the information of the suspected signal can be directly inquired in the following process, the search is not required to be carried out again, and the search time is reduced.
For the case that the second electronic device is not successfully accessed to the cell, the electronic device may 1) stop searching; 2) stopping searching and recording the searched information of the suspected signal; 3) continuing searching; 4) and continuing searching and recording the searched information of the suspected signal.
Taking the above 4) as an example to continue searching and record the information of the searched suspected signal, after the step S202, the cell search provided in the embodiment of the present application may further include the following contents:
if the access to the cell is not successful, the step of searching suspected signals in different segmented frequency bands respectively by using a plurality of available receiving channels according to the preset receiving bandwidth and scanning gain is continuously executed.
At this point, the electronic device may continue searching when the cell is not successfully accessed. Similar to the above embodiment, in the searching process, information of each searched suspected signal may be recorded, and as an implementation manner, the information of the suspected signal may include cell frequency point information, cell bandwidth information, and the like.
It should be noted that, in the embodiment of the present application, the purpose of recording the information of the suspected signal is similar to that of recording the information of the suspected signal in the above embodiment, and therefore, the description thereof is omitted here.
In the above scheme, when the cell is not successfully accessed, the search may be continued, and when the suspected signal is searched, the suspected signal may be analyzed to attempt to initiate cell access, so as to reduce the search time and improve the search efficiency.
Referring to fig. 3, fig. 3 is a block diagram of a cell search apparatus 300 according to an embodiment of the present disclosure, where the cell search apparatus 300 is applied to an electronic device 100, the electronic device 100 includes a plurality of available receiving channels, and the cell search apparatus 300 may include: a searching module 301, configured to search suspected signals in different segment frequency bands by using multiple available receiving channels according to a preset receiving bandwidth and a preset scanning gain; an analyzing module 302, configured to analyze the searched suspected signal to attempt to initiate cell access; and the segmented frequency band is obtained by segmenting the frequency band to be searched according to the number of the available receiving channels, and the signal intensity of the suspected signal is not less than that of the suspected signal which is configured in advance corresponding to the scanning gain of the available receiving channels.
In the embodiment of the application, the frequency band to be searched is divided into a plurality of segmented frequency bands, so that after a plurality of receiving channels on the electronic device are opened, each available receiving channel can search a part of frequency bands, and since the plurality of segmented frequency bands can be searched simultaneously, and only when a suspected signal is searched, the suspected signal is analyzed to try to initiate cell access, the searching time can be reduced, and the searching efficiency is improved.
Further, the scanning gain of at least one of the available receiving channels includes gains of a plurality of steps, and the gains of different steps respectively correspond to different signal strength threshold values; for each of the available receiving channels, the searching module 301 is specifically configured to: searching the segmented frequency band corresponding to the available receiving channel according to the receiving bandwidth and the gain of the first gear; if no suspected signal is searched, searching the segmented frequency band corresponding to the available receiving channel according to the receiving bandwidth and the gain of the second gear; the gain of the second gear is larger than the gain of the first gear, and the signal strength threshold value corresponding to the gain of the second gear is smaller than the signal strength threshold value corresponding to the gain of the first gear.
In this embodiment of the present application, gains of a plurality of gears may be configured in advance, a segmented frequency band is searched by the gain of the first gear, and if a suspected signal is not searched, a segmented frequency band may be searched by the gain of the second gear. Therefore, the signal with the signal strength meeting the condition can be searched as much as possible, and the cell with the better signal strength is accessed preferentially.
Further, for each of the available receiving channels, the searching module 303 is specifically configured to: searching a first frequency band in the segmented frequency bands according to the receiving bandwidth and the scanning gain; and if no suspected signal is searched in the first frequency band, searching a second frequency band in the segmented frequency bands according to the receiving bandwidth and the scanning gain.
In the embodiment of the present application, a first frequency band, a second frequency band, and the like in one segmented frequency band may be sequentially searched, and only when a suspected signal is searched, the suspected signal is analyzed to attempt to initiate cell access, so that the search time is further reduced, and the search efficiency is improved.
Further, the cell search apparatus 300 further includes: a determining module, configured to determine that the suspected signal is an available signal and record information of the available signal if the cell access is successful; if the cell access is not successful, the searching module 301 continues to perform the step of searching for the suspected signal in different segmented frequency bands by using the plurality of available receiving channels according to the preconfigured receiving bandwidth and scanning gain.
In the embodiment of the present application, when the cell is successfully accessed, the information of the available signal for access may be recorded, so that a subsequent attempt to access the cell may be directly made based on the information of the available signal; when the cell is not successfully accessed, the searching can be continued, and when the suspected signal is searched, the suspected signal is analyzed to try to initiate the cell access, so that the searching time is reduced, and the searching efficiency is improved.
Further, the cell search apparatus 300 further includes: if the cell access is successful, the searching module 301 continues to perform the step of searching for the suspected signals in different segmented frequency bands by using the plurality of available receiving channels according to the preconfigured receiving bandwidths and scanning gains, and records the information of the searched suspected signals.
In the embodiment of the application, even if the cell is successfully accessed, the search can be continued, and the information of each suspected signal searched is recorded, so that the information of the suspected signal can be directly inquired in the following process, the search is not required to be carried out again, and the search time is reduced.
Further, the cell search apparatus 300 further includes: and the recording module is used for recording the searched information of the suspected signal.
In the embodiment of the application, in the searching process, the information of each searched suspected signal can be recorded, so that the information of the suspected signal can be directly inquired in the following process, the searching is not required to be carried out again, and the searching time is reduced.
Embodiments of the present application further provide a computer program product, including a computer program stored on a non-transitory computer-readable storage medium, where the computer program includes program instructions, and when the program instructions are executed by a computer, the computer can perform the steps of the cell search method in the foregoing embodiments, for example, including: simultaneously, searching suspected signals in different segmented frequency bands by using a plurality of available receiving channels according to a preset receiving bandwidth and scanning gain; analyzing the searched suspected signal to try to initiate cell access; and the segmented frequency band is obtained by segmenting the frequency band to be searched according to the number of the available receiving channels, and the signal intensity of the suspected signal is not less than a pre-configured signal intensity threshold value corresponding to the scanning gain of the available receiving channel for searching the suspected signal.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
In addition, units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
Furthermore, the functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
It should be noted that the functions, if implemented in the form of software functional modules and sold or used as independent products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A cell search method is applied to an electronic device, the electronic device comprises a plurality of available receiving channels, and the cell search method comprises the following steps:
simultaneously, searching suspected signals in different segmented frequency bands by using a plurality of available receiving channels according to a preset receiving bandwidth and scanning gain;
analyzing the searched suspected signal to try to initiate cell access;
and the segmented frequency band is obtained by segmenting the frequency band to be searched according to the number of the available receiving channels, and the signal intensity of the suspected signal is not less than a pre-configured signal intensity threshold value corresponding to the scanning gain of the available receiving channel for searching the suspected signal.
2. The cell search method according to claim 1, wherein the scanning gain of at least one of the available receiving channels comprises gains of a plurality of steps, and the gains of different steps respectively correspond to different signal strength threshold values; for each of the available receiving channels, the searching for the suspected signal in different segmented frequency bands by simultaneously using the multiple available receiving channels according to the preconfigured receiving bandwidth and scanning gain includes:
searching the segmented frequency band corresponding to the available receiving channel according to the receiving bandwidth and the gain of the first gear;
if no suspected signal is searched, searching the segmented frequency band corresponding to the available receiving channel according to the receiving bandwidth and the gain of the second gear;
the gain of the second gear is larger than the gain of the first gear, and the signal strength threshold value corresponding to the gain of the second gear is smaller than the signal strength threshold value corresponding to the gain of the first gear.
3. The cell search method according to claim 1, wherein for each of the available receiving channels, the performing the suspected signal search in different segmented frequency bands by simultaneously using the multiple available receiving channels according to a pre-configured receiving bandwidth and a pre-configured scanning gain comprises:
searching a first frequency band in the segmented frequency bands according to the receiving bandwidth and the scanning gain;
and if no suspected signal is searched in the first frequency band, searching a second frequency band in the segmented frequency bands according to the receiving bandwidth and the scanning gain.
4. The cell search method according to any of claims 1-3, wherein after the resolving the searched suspected signal to attempt to initiate cell access, the cell search method further comprises:
if the cell access is successful, determining the suspected signal as an available signal, and recording the information of the available signal;
and if the cell access is not successful, continuously executing the step of searching the suspected signals in different segmented frequency bands by simultaneously utilizing the plurality of available receiving channels according to the preset receiving bandwidth and scanning gain.
5. The cell search method according to any of claims 1-3, wherein after the resolving the searched suspected signal to attempt to initiate cell access, the cell search method further comprises:
if the cell access is successful, the step of searching suspected signals in different segmented frequency bands by simultaneously utilizing the plurality of available receiving channels according to the preset receiving bandwidth and scanning gain is continuously executed, and the information of the searched suspected signals is recorded.
6. The cell search method according to claim 1, wherein after the simultaneously using the plurality of available receiving channels to search for the suspected signals in different segmented frequency bands according to the preconfigured receiving bandwidths and scanning gains, the cell search method further comprises:
and recording the searched information of the suspected signal.
7. A cell search apparatus, wherein the cell search apparatus is applied to an electronic device, the electronic device includes a plurality of available receiving channels, and the cell search apparatus includes:
the searching module is used for searching suspected signals in different segmented frequency bands by utilizing the plurality of available receiving channels according to the preset receiving bandwidth and scanning gain;
the analysis module is used for analyzing the searched suspected signal to try to initiate cell access;
and the segmented frequency band is obtained by segmenting the frequency band to be searched according to the number of the available receiving channels, and the signal intensity of the suspected signal is not less than a pre-configured signal intensity threshold value corresponding to the scanning gain of the available receiving channel for searching the suspected signal.
8. An electronic device, comprising: a processor, a memory, and a bus;
the processor and the memory are communicated with each other through the bus;
the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the cell search method of any of claims 1-6.
9. A non-transitory computer-readable storage medium storing computer instructions which, when executed by a computer, cause the computer to perform the cell search method of any one of claims 1-6.
10. A computer program product comprising a computer program, characterized in that the computer program, when being executed by a processor, carries out the cell search method according to any one of claims 1-6.
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| CN202111499137.2A CN114244467A (en) | 2021-12-09 | 2021-12-09 | Cell search method and device |
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