CN112312521A - Network access method and device - Google Patents
Network access method and device Download PDFInfo
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- CN112312521A CN112312521A CN202011392856.XA CN202011392856A CN112312521A CN 112312521 A CN112312521 A CN 112312521A CN 202011392856 A CN202011392856 A CN 202011392856A CN 112312521 A CN112312521 A CN 112312521A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/18—Selecting a network or a communication service
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Abstract
The application discloses a network access method and a device thereof. Wherein, the method comprises the following steps: acquiring a system message of a cell to be accessed, wherein the system message comprises indication information; judging whether the cell to be accessed supports an enhanced machine type communication (eMTC) network or not according to the indication information; if the cell to be accessed supports the eMTC network and the access to the LTE network fails, initiating a process of accessing the eMTC network before the network searching process of each frequency band in the first frequency band set is finished; the first set of frequency bands includes all frequency bands supporting the LTE network. By implementing the embodiment of the application, the time delay of accessing the network under the edge coverage scene is favorably shortened.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a network access method and an apparatus thereof.
Background
When the terminal device is at the cell edge, the network signal is poor. For example, when the terminal device is located at a cell edge of an LTE (long term evolution) and eMTC (enhanced machine type communication) joint networking, a time delay of the terminal device accessing the network may be long.
Therefore, how to shorten the time delay of the terminal device accessing the network becomes an urgent technical problem to be solved.
Disclosure of Invention
The application discloses a network access method and a network access device, which are beneficial to shortening the time delay of accessing a network under an edge coverage scene.
In a first aspect, the present application provides a network access method, applied to a terminal device, the method including: acquiring a system message of a cell to be accessed, wherein the system message comprises indication information; judging whether the cell to be accessed supports an enhanced machine type communication (eMTC) network or not according to the indication information; if the cell to be accessed supports the eMTC network and the access to the LTE network fails, initiating a process of accessing the eMTC network before the network searching process of each frequency band in the first frequency band set is finished; the first frequency band set comprises all frequency bands supporting an LTE network.
In an implementation manner, the determining, according to the indication information, whether the cell to be accessed supports an eMTC network includes: and if the value of the indication information is nonzero, determining that the cell to be accessed supports the eMTC network.
In one implementation, in the first frequency band set, the LTE cell signal in the first frequency band is strongest; the failure to access the LTE network includes: and the LTE cell under the first frequency band fails to be accessed.
In one implementation, the system message includes a system message block 1-bandwidth reduction SIB1-BR message; the above procedure of initiating access to the eMTC network includes: and if the SIB1-BR message is read successfully and the eMTC network residence condition is met, registering in the eMTC network.
In an implementation manner, before the network searching procedure of each frequency band in the first frequency band set is ended, initiating a procedure of accessing the eMTC network includes: displaying an identifier of a first eMTC network before the network searching process of each frequency band in a first frequency band set is finished; upon receiving a selection instruction for a first eMTC network, initiating an access procedure for the first eMTC network.
In a second aspect, the present application provides a network access apparatus, including:
the system comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring a system message of a cell to be accessed, and the system message comprises indication information;
the processing unit is used for judging whether the cell to be accessed supports an enhanced machine type communication (eMTC) network or not according to the indication information;
the processing unit is further configured to initiate a procedure of accessing the eMTC network before a network searching procedure of each frequency band in the first frequency band set is finished, when the cell to be accessed supports the eMTC network and the access to the long term evolution LTE network fails; the first frequency band set comprises all frequency bands supporting an LTE network.
In an implementation manner, when determining, according to the indication information, whether the cell to be accessed supports an eMTC network, the processing unit is specifically configured to: and when the value of the indication information is non-zero, determining that the cell to be accessed supports the eMTC network.
In one implementation, in the first frequency band set, the LTE cell signal in the first frequency band is strongest; the failure to access the LTE network includes: and the LTE cell under the first frequency band fails to be accessed.
In one implementation, the system message includes a system message block 1-bandwidth reduction SIB1-BR message; when the processing unit is configured to initiate a procedure for accessing an eMTC network, the processing unit is specifically configured to: and if the SIB1-BR message is read successfully and the eMTC network residence condition is met, registering in the eMTC network.
In an implementation manner, when the processing unit is configured to initiate a procedure of accessing an eMTC network before a network searching procedure of each frequency band in the first frequency band set is ended, the processing unit is specifically configured to: displaying an identifier of a first eMTC network before the network searching process of each frequency band in a first frequency band set is finished; and initiating an access procedure for the first eMTC network upon receiving a selection instruction for the first eMTC network.
In a third aspect, the present application provides a network access apparatus, including a processor, a memory, and a transceiver, where the processor, the memory, and the transceiver are connected to each other, where the memory is used to store a computer program, and the computer program includes program instructions, and the processor is configured to call the program instructions to execute the network access method of the first aspect.
In a fourth aspect, the present application provides a computer-readable storage medium having stored thereon one or more instructions adapted to be loaded by a processor and to perform the network access method of the first aspect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a conventional network access method;
fig. 2 is an architecture diagram of a communication system according to an embodiment of the present application;
fig. 3 is a flowchart of a network access method according to an embodiment of the present application;
fig. 4 is a flowchart of another network access method according to an embodiment of the present application;
fig. 5 is a schematic diagram of a network access device according to an embodiment of the present application;
fig. 6 is a schematic diagram of another network access device according to an embodiment of the present application.
Detailed Description
For ease of understanding, terms referred to in the present application will be first introduced.
1. Enhanced machine type communication (eMTC)
In the case of LTE and eMTC converged networking, eMTC exists attached to LTE. Compared with the conventional LTE, the channel of the eMTC is repeatedly transmitted, so the eMTC repeatedly transmits the system message. For example, LTE only sends system messages once and eMTC sends additional 3 to 15 system messages within an 80ms fixed scheduling period. Because the eMTC has the characteristic of repeatedly sending system messages, the coverage can be improved (the coverage performance is improved by 15db compared with the traditional LTE). Therefore, eMTC has significance in certain specific environments, such as LTE cell edge coverage scenarios. Note that eMTC may also be referred to as enhanced machine communication.
2. System Information (SI), system information block 1 (SIB 1), and system information block 1-bandwidth reduction (SIB 1-BR)
The system message is cell-level information, i.e. is valid for all terminal devices accessing the cell. The SI is divided into a main system information block (MIB) and a System Information Block (SIB). Where the MIB comprises a limited number of the most important, most commonly used transmission parameters, which require further information from the cell. There are many different types of SIB, and the SIB1 and SIB1-BR referred to in the embodiments of the present application are included in the SIB.
The SIB1 message mainly carries information related to cell access and cell selection, and the terminal device may determine whether the cell is suitable for access according to the SIB1 message. Since the eMTC device does not receive the SIB1 message for LTE, a new SIB1, SIB1-BR, is introduced for use by the eMTC device. That is, two sets of corresponding SIB messages are provided in the system message, and the SIB1 message needs to be read when the LTE cell is accessed; while accessing an eMTC cell requires reading the SIB1-BR message.
3. Existing network access method
Fig. 1 is a flowchart of a conventional network access method. As shown in fig. 1, after receiving a power-on instruction or detecting a network searching operation, the terminal device may initiate an LTE full-band network searching and selecting process. Taking the example that the LTE full band includes the frequency band 1, the frequency band 2, and the frequency band 3, the LTE full band network searching and selecting process includes initiating the LTE network searching and selecting process for the frequency band 1, the frequency band 2, and the frequency band 3 in sequence. The network searching and selecting process aiming at the LTE under the frequency band 1 comprises the following steps:
after the LTE cell under the frequency band 1 is successfully synchronized, the terminal equipment acquires the system message of the cell;
and if the terminal equipment fails to acquire the system message of the cell, judging whether the LTE full-band network searching and network selecting are finished. Since the network searching and selecting process aiming at the frequency band 2 and the network searching and selecting process aiming at the frequency band 3 are not initiated, the LTE full-frequency-band network searching and selecting is not completed. The terminal equipment can initiate a network searching and selecting process aiming at LTE under the frequency band 2; if the terminal equipment successfully acquires the cell system message, reading the SIB1 message.
And if the terminal equipment fails to read the SIB1 message, judging whether the LTE full-band network searching and selecting are finished. Since the network searching and selecting process aiming at the frequency band 2 and the network searching and selecting process aiming at the frequency band 3 are not initiated, the LTE full-frequency-band network searching and selecting is not completed. The terminal equipment can initiate a network searching and selecting process aiming at LTE under the frequency band 2; if the terminal device successfully reads the SIB1 message, it registers in the LTE network through the aforementioned cell (i.e., the cell in frequency band 1). For example, reporting the result to the upper layer, and further acquiring other system messages to register in the LTE network.
If the access to the LTE network in the frequency band 2 fails, the terminal device will continue to initiate the network selection procedure for the LTE network search in the frequency band 3, which may be referred to as the above step in the network selection procedure for the LTE network search in the frequency band 1, and is not described herein again.
It should be noted that, after the LTE full-band network searching and selecting is completed, the terminal device has not successfully accessed the network, that is, the terminal device initiates an eMTC full-band network searching and selecting procedure when the LTE network in the frequency band 1, the frequency band 2, and the frequency band 3 fails to be accessed.
The eMTC is attached to the existence of LTE, the frequency band that the eMTC full frequency band and the LTE full frequency band include is the same, if all include frequency channel 1, frequency channel 2 and frequency channel 3, then the eMTC full frequency band network searching and selecting procedure includes that the eMTC that initiates under to frequency channel 1, frequency channel 2, frequency channel 3 searches for the network selection procedure in proper order. The steps of the network searching and selecting procedure for the eMTC under the frequency band 1 may refer to the steps of the network searching and selecting procedure for the LTE under the frequency band 1, but there are the following differences:
after the eMTC cell under the frequency band 1 is successfully synchronized and the terminal device acquires the system message of the cell, it needs to determine whether the indication information in the system message is zero, that is, whether the cell supports the eMTC network.
Under the condition that the cell supports an eMTC network, the terminal equipment reads an SIB1-BR message; under the condition that the cell does not support the eMTC network, the terminal equipment judges whether the eMTC full-band network searching and selecting are finished. Because the network searching and selecting process aiming at the frequency band 2 and the network searching and selecting process aiming at the frequency band 3 are not initiated, the eMTC full-frequency-band network searching and selecting is not completed. The terminal device may initiate a network searching and selecting procedure for eMTC in frequency band 2.
If the cell supports the eMTC network and the terminal device successfully reads the SIB1-BR message, the terminal device registers in the eMTC network through the cell (i.e., the cell in the frequency band 1). For example, report the results to an upper layer, and further obtain other system messages to register in the eMTC network. And if the terminal equipment fails to read the SIB1-BR message, judging whether the eMTC full-band network searching and network selecting are finished. Because the network searching and selecting process aiming at the frequency band 2 and the network searching and selecting process aiming at the frequency band 3 are not initiated, the eMTC full-frequency-band network searching and selecting is not completed. The terminal device may initiate a network searching and selecting procedure for eMTC in frequency band 2. The steps may refer to the above steps in the network searching and selecting procedure for eMTC under the frequency band 1, which are not described herein again.
In summary, in the existing network access process, the full-band network searching and selecting process of the LTE network needs to be completed first, and the full-band network searching and selecting process of the eMTC network is initiated again under the condition that the LTE network is not successfully registered after the full-band network searching and selecting process of the LTE network is completed. This results in a longer access network delay.
In view of this, the present application provides a network access method to shorten the time delay of accessing the network.
Fig. 2 is an architecture diagram of a communication system according to an embodiment of the present application. As shown in fig. 2, the communication system includes a terminal device 201 and a network device 202. The terminal device 201 is an entity, such as a mobile phone, on the user side for receiving or transmitting signals. A terminal device may also be referred to as a terminal (terminal), a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc. The terminal device may be a mobile phone (mobile phone), a wearable device, a tablet (Pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self-driving (self-driving), a wireless terminal in remote surgery (remote surgery), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in city (city), a wireless terminal in smart home (smart home), a device for supporting enhanced Machine-Type communication (eMTC), and/or a Long Term Evolution (LTE) terminal supporting universal mobile communication technology, and so on. The embodiment of the present application does not limit the specific technology and the specific device form adopted by the terminal device.
In fig. 2, the network device 202 is a network device corresponding to the serving cell of the terminal device 201. The oval area 203 is a coverage area of an LTE cell, and the oval area 204 is a coverage area of an eMTC cell. The eMTC cell is a cell attached to an LTE cell, and when the terminal equipment is located at the edge of the cell, because of the difference of LTE network signals, an eMTC network access flow can be initiated for the eMTC cell. It should be noted that the number of the communication systems shown in fig. 2 is only for example and is not limited to the embodiment of the present application.
The network device 202 is an entity on the network side for transmitting or receiving signals. The network device may be an evolved NodeB (eNB), a transmission point (TRP), and the like. The embodiments of the present application do not limit the specific technologies and the specific device forms used by the network devices. It should be noted that the technical solution of the embodiment of the present application may be applied to an LTE communication system.
A network access method provided by the present application is described in detail below.
Referring to fig. 3, fig. 3 is a flowchart of a network access method according to an embodiment of the present application. The network access method may be implemented by the terminal device 201 shown in fig. 2, or may be implemented by a chip in the terminal device 201; as shown in fig. 3, the network access method includes, but is not limited to, the following steps S301 to S303, and the method shown in fig. 3 is described by taking the application to the terminal device 201 as an example.
Step S301, the terminal device obtains the system information of the cell to be accessed, and the system information comprises the indication information.
The cell to be accessed is an accessible cell searched when the terminal device 201 is located at the edge of the LTE cell. The accessible cell may be an LTE cell or an eMTC cell. The system message may be a MIB message. After the terminal device decodes the MIB message, other system messages (e.g., SIB messages) may be decoded using parameters in the MIB message. Optionally, the indication information may be an SIB1-BR field in the system message, which is used to indicate whether the cell to be accessed supports the eMTC network.
Specifically, when the terminal device 201 is located at the cell edge, a network searching process may be initiated; the network searching process comprises the step of acquiring system information of a cell to be accessed. Optionally, the terminal device may trigger a network searching process after detecting a network searching operation of the user.
Step S302, the terminal equipment judges whether the cell to be accessed supports the eMTC network according to the indication information.
In an implementation manner, if the value of the indication information is non-zero, it is determined that the cell to be accessed supports the eMTC network. It can be understood that if the value of the indication information is zero, it is determined that the cell to be accessed does not support the eMTC network.
Step S303, in a case that the cell to be accessed supports the eMTC network, if the terminal device fails to access the LTE network, a procedure of accessing the eMTC network is initiated before a network searching procedure of each frequency band in the first frequency band set is ended.
In one implementation, the failure to access the LTE network includes one or more of: the terminal equipment fails to read the SIB1 message; alternatively, the S value is less than zero. Since the SIB1 message mainly carries information related to cell access and cell selection, the terminal device cannot determine whether the cell is suitable for access when reading the SIB1 message fails. The S value is calculated according to an S criterion, and is the reference signal received power value of the measured cell (the cell to be accessed as described above), the minimum received level + the minimum received level offset, and the power offset. The cell can be accessed under the condition that the S value is larger than zero; and in the case that the S value is less than zero, the cell cannot be accessed. Wherein, the lowest receiving level can be determined by the related parameters carried by the SIB1 message or the SIB1-BR message. For example, if the SIB1 message indicates that the relevant parameter is-64 dbm, the lowest reception level may be-64 dbm × 2-128 dbm.
The first frequency band set comprises all frequency bands supporting an LTE network. It should be noted that, the network searching process of each frequency band in the first frequency band set may refer to the network searching and selecting process of a certain frequency band in fig. 1, and is not described herein again. It should be further noted that, the procedure for accessing the eMTC network in step S303 may refer to the procedure for accessing the eMTC network shown in fig. 1, but there are the following differences: the access eMTC network shown in fig. 1 needs to determine whether the indication information is zero, that is, whether the cell to be accessed supports the eMTC network is determined; however, since step S302 already determines whether the cell to be accessed supports the eMTC network; therefore, in the procedure of accessing the eMTC network in step S303, it is not necessary to determine whether the cell to be accessed supports the eMTC network according to the indication information.
In an implementation manner, each frequency band in the first frequency band set may be arranged according to a signal strength order of the LTE cells under the frequency band, where the signal of the LTE cell under the first frequency band is strongest. The terminal device may sequentially initiate a network searching and selecting process according to the arrangement order of the frequency bands in the first frequency band set. For example, taking the first frequency band set including the first frequency band, the second frequency band and the third frequency band as an example, the signal of the LTE cell in the first frequency band is stronger than the signal of the LTE cell in the second frequency band, and the signal of the LTE cell in the second frequency band is stronger than the signal of the LTE cell in the third frequency band.
It should be noted that the failure to access the LTE network may refer to failure to access the LTE cell in the first frequency band. Since the frequency bands in the first frequency band set are arranged according to the signal strength sequence of the LTE cells under the frequency bands, the probability of accessing LTE cells under other frequency bands in the first frequency band set is lower when the access to the LTE cell under the first frequency band (the LTE cell with the strongest signal) fails. Therefore, the LTE cell under the first frequency band is selected to be accessed, and the success rate of accessing the network can be improved.
In this embodiment of the present application, in case of failure to access the LTE network, the terminal device may adopt the following two ways to continue attempting to access the network:
the first method is as follows: a terminal device may initiate a procedure to access an eMTC network.
Initiating a procedure for accessing an eMTC network, comprising: if reading the SIB1-BR message is successful and the eMTC network residence condition is met, registration is performed in the eMTC network. Optionally, taking an example that the eMTC full frequency band includes three frequency bands (e.g., a first frequency band, a second frequency band, and a third frequency band), and the signal strength of the eMTC cell decreases progressively in the first frequency band, the second frequency band, and the third frequency band, the flow initiating access to the eMTC network may refer to a flow initiating access to the eMTC network in the first frequency band, or a flow initiating access to the eMTC network in the second frequency band or the sixth frequency band.
Optionally, if reading the SIB1-BR message fails or the eMTC network residence condition is not satisfied, registration in the eMTC network cannot be performed. Optionally, if the access to the eMTC network in the first frequency band also fails, a procedure of accessing the eMTC network in the second frequency band may be initiated; or, a network searching and selecting process for the LTE network in another frequency band (such as the second frequency band) in the first frequency band set except the first frequency band is initiated.
In one implementation, before initiating the procedure for accessing the eMTC network, the terminal device may display an identifier of the first eMTC network; upon receiving a selection instruction for a first eMTC network, initiating an access procedure for the first eMTC network. When searching and selecting the eMTC network, one or more accessible eMTC networks may be retrieved. The first eMTC network may be an eMTC network with a strongest signal. Upon retrieving an accessible eMTC network, the first eMTC network may be displayed on the terminal device for selection by the user. Optionally, when a plurality of accessible eMTC networks are retrieved, the plurality of eMTC networks with the former signal strength may be displayed on the terminal device for the user to select. The retrieved eMTC network identifier is displayed on the terminal equipment, so that the user can be reminded of the presence of the accessible eMTC network, and the time delay of network access can be shortened.
Under the condition of failure of accessing the LTE network, the terminal equipment initiates a process of accessing the eMTC network by the mode, so that the network can be accessed more quickly, and the time delay of accessing the network is shortened.
The second method comprises the following steps: the terminal device may initiate an access procedure for an LTE network in another frequency band of the first set of frequency bands except the first frequency band. The other frequency band of the first frequency band set except the first frequency band may be referred to as a second frequency band.
As can be seen from the above, the LTE network signal in the second frequency band is next to the LTE network signal in the first frequency band, and the communication quality provided by the LTE network is higher than that provided by the eMTC network. Therefore, under the condition that the LTE cell under the first frequency band fails to be accessed, the LTE is continuously selected for access, and the communication quality of the terminal equipment accessed to the network is favorably ensured.
It should be noted that, if the LTE network in the second frequency band fails to be accessed, the terminal device may adopt one of the two manners again to attempt to access the network, that is, initiate a procedure of accessing the eMTC network, or initiate an access procedure for the LTE network in another frequency band (for example, a third frequency band).
It should be further noted that, in the embodiment of the present application, the procedure for initiating access to the eMTC network is performed before the network searching procedure of each frequency band in the first frequency band set is finished. In other words, before network searching and network selecting of all frequency bands of the LTE are completed, a network searching and network selecting process for the eMTC network is initiated. By initiating network searching and network selecting aiming at the eMTC network before completing network searching and network selecting of all frequency bands of LTE, the eMTC network can be tried to be accessed as early as possible, thereby being beneficial to shortening the time delay of accessing the network.
Referring to fig. 4, fig. 4 is a flowchart of another network access method according to an embodiment of the present application. The network access method may be implemented by the terminal device 201 shown in fig. 2, or may be implemented by a chip in the terminal device 201; as shown in fig. 4, the network access method includes, but is not limited to, the following steps S401 to S409, and the method shown in fig. 3 is described by taking the application to the terminal device 201 as an example.
Step S401, the terminal equipment receives a starting instruction or detects the network searching operation of the user.
Step S402, the terminal equipment initiates a network searching and selecting process.
Specifically, the terminal device may initiate a network searching and selecting procedure for the first frequency band, that is, initiate a network searching and selecting procedure for the LTE network.
Step S403, the terminal device obtains a system message of the cell to be accessed.
And after the cell synchronization is successful, the terminal equipment acquires the system message of the cell to be accessed. And if the system message of the cell to be accessed fails to be acquired, re-initiating a network searching and selecting process for the LTE network, for example, initiating a network searching and selecting process for the second frequency band. If the system message of the standby cell is successfully acquired, step S404 is executed.
Step S404, the terminal device determines whether the indication message in the system message is non-zero, that is, determines whether the cell to be accessed supports the eMTC network.
Step S405, the terminal device reads the SIB1 message of the cell to be accessed.
Regardless of whether the cell to be accessed supports the eMTC network, the terminal device needs to read the SIB 1.
If the cell to be accessed supports the eMTC network, the terminal device successfully reads the SIB1 message of the cell to be accessed, and then executes step S406; in the case that the cell to be accessed supports the eMTC network, the terminal device fails to read the SIB1 message of the cell to be accessed, and then step S408 is performed.
Under the condition that the cell to be accessed does not support the eMTC network, the terminal equipment successfully reads the SIB1 message of the cell to be accessed, and then step S406 is executed; under the condition that the cell to be accessed does not support the eMTC network, the terminal equipment fails to read the SIB1 message of the cell to be accessed, and then the network searching and selecting process is initiated again; the step of reinitiating the network searching and selecting process may refer to the step of two ways adopted after the failure of accessing the LTE cell in the embodiment shown in fig. 3, and is not described herein again.
Step S406, the terminal device determines whether the S value of the cell to be accessed is greater than zero.
If the S value of the cell to be accessed is greater than zero, executing step S407; if the S value of the cell to be accessed is less than zero, step S408 is executed.
Step S407, the terminal device registers in the LTE network.
Specifically, the terminal device may register in the LTE network through the cell to be accessed.
Step S408, if the terminal device reads the SIB1-BR message of the cell to be accessed successfully, then registers in the eMTC network.
Specifically, the terminal device may register in the eMTC network through the cell to be accessed. It should be noted that, if the terminal device fails to read the SIB1-BR message of the cell to be accessed, and the cell to be accessed is the cell in the first frequency band, a procedure of accessing the eMTC network in the second frequency band may be initiated; or, a network searching and selecting process for the LTE network in another frequency band (such as the second frequency band) in the first frequency band set except the first frequency band is initiated.
As can be seen from fig. 1 and 4, compared to the network access method shown in fig. 1, by implementing the network access method provided in the present application shown in fig. 4, an eMTC network access procedure can be initiated without performing a full-band network search and selection in an LTE network, thereby being beneficial to shortening a time delay of accessing a network.
Assuming that the time required for completing the network searching and selecting process for one frequency band is T seconds, and the first frequency band set includes N frequency bands, the time required for completing the network searching and selecting process for the full frequency band of the LTE network is N x T seconds. If the LTE network under the first frequency band cannot be successfully accessed, the probability of successfully accessing the LTE network under other frequency bands except the first frequency band in the first frequency band set is lower, and therefore, at least the LTE full-band network searching and selecting process needs to be completed before the network is successfully accessed. It can be seen that the time delay of the access network is at least N x T seconds.
However, by implementing the embodiment of the present application, after the LTE network access in the first frequency band fails, the eMTC network searching and selecting procedure may be initiated to attempt to access the network. In this way, the access network latency will be much less than N x T seconds. Therefore, by implementing the network access method of the embodiment of the application, the time delay of the terminal equipment accessing the network can be shortened.
Referring to fig. 5, fig. 5 is a schematic diagram of a network access device according to an embodiment of the present disclosure. The network access device shown in fig. 5 may be used to perform some or all of the functions in the method embodiments described in fig. 3 and 4. The detailed description of each unit is as follows:
the system comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring a system message of a cell to be accessed, and the system message comprises indication information;
the processing unit is used for judging whether the cell to be accessed supports an enhanced machine type communication (eMTC) network or not according to the indication information;
the processing unit is further configured to initiate a procedure of accessing the eMTC network before a network searching procedure of each frequency band in the first frequency band set is finished under the condition that the cell to be accessed supports the eMTC network and the access to the LTE network fails; the first set of frequency bands includes all frequency bands supporting an LTE network.
In an implementation manner, when determining, according to the indication information, whether the cell to be accessed supports an eMTC network, the processing unit is specifically configured to: and when the value of the indication information is non-zero, determining that the cell to be accessed supports the eMTC network.
In one implementation, in the first frequency band set, the LTE cell signal in the first frequency band is strongest; the failure to access the LTE network includes: and the LTE cell under the first frequency band fails to be accessed.
In one implementation, the system message includes a system message block 1-bandwidth reduction SIB1-BR message; when the processing unit is configured to initiate a procedure for accessing an eMTC network, the processing unit is specifically configured to: and if the SIB1-BR message is read successfully and the eMTC network residence condition is met, registering in the eMTC network.
In an implementation manner, when the processing unit is configured to initiate a procedure of accessing an eMTC network before a network searching procedure of each frequency band in the first frequency band set is ended, the processing unit is specifically configured to: displaying an identifier of a first eMTC network before the network searching process of each frequency band in a first frequency band set is finished; and initiating an access procedure for the first eMTC network upon receiving a selection instruction for the first eMTC network.
According to the embodiment of the present application, the units in the network access apparatus shown in fig. 5 may be respectively or entirely combined into one or several other units to form the network access apparatus, or some unit(s) therein may be further split into multiple units with smaller functions to form the network access apparatus, which may achieve the same operation without affecting the implementation of the technical effect of the embodiment of the present application. The units are divided based on logic functions, and in practical application, the functions of one unit can be realized by a plurality of units, or the functions of a plurality of units can be realized by one unit. In other embodiments of the present application, the network access apparatus may also include other units, and in practical applications, these functions may also be implemented by being assisted by other units, and may be implemented by cooperation of multiple units.
The embodiments of the present application and the embodiments of the foregoing method are based on the same concept, and the technical effects thereof are also the same, and for the specific principle, reference is made to the description of the foregoing embodiments, which is not repeated herein.
Referring to fig. 6, fig. 6 is a schematic diagram of another network access device according to an embodiment of the present disclosure. As shown in fig. 6, the network access apparatus includes at least a transceiver 601, a processor 602, and a memory 603. The transceiver 601, the processor 602, and the memory 603 may be connected by a bus 604 or other means. The bus lines are shown in fig. 6 as thick lines, and the connection between other components is merely illustrative and not intended to be limiting. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 6, but this is not intended to represent only one bus or type of bus.
In embodiments of the present application, the transceiver 601 may be a transceiver, circuit, bus, module or other type of transceiver for communicating with other devices over a transmission medium. For example, the transceiver 601 is used in the network access apparatus 6 so that the network access apparatus 6 can communicate with other devices. The processor 602 transmits and receives data using the transceiver 601 and is configured to implement the methods of the above-described method embodiments. The coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, and may be an electrical, mechanical or other form for information interaction between the devices, units or modules. The specific connection medium among the transceiver 601, the processor 602, and the memory 603 is not limited in the embodiments of the present application.
The Processor 602 may be a Central Processing Unit (CPU), and the Processor 602 may also be other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. A general purpose processor may be a microprocessor, but in the alternative, the processor 602 may be any conventional processor or the like. Wherein:
a memory 603 for storing program instructions.
A processor 602 for invoking program instructions stored in memory 603 for:
calling a transceiver 601 to acquire a system message of a cell to be accessed, wherein the system message comprises indication information;
judging whether the cell to be accessed supports an enhanced machine type communication (eMTC) network or not according to the indication information;
if the cell to be accessed supports the eMTC network and the access to the LTE network fails, initiating a process of accessing the eMTC network before the network searching process of each frequency band in the first frequency band set is finished; the first frequency band set comprises all frequency bands supporting an LTE network.
In an implementation manner, the processor 602 is configured to, when determining, according to the indication information, whether the cell to be accessed supports an eMTC network, specifically: and when the value of the indication information is non-zero, determining that the cell to be accessed supports the eMTC network.
In one implementation, in the first frequency band set, the LTE cell signal in the first frequency band is strongest; the failure to access the LTE network includes: and the LTE cell under the first frequency band fails to be accessed.
In one implementation, the system message includes a system message block 1-bandwidth reduction SIB1-BR message; when the processor 602 is configured to initiate a procedure for accessing an eMTC network, the processor is specifically configured to: and if the SIB1-BR message is read successfully and the eMTC network residence condition is met, registering in the eMTC network.
In an implementation manner, when the processor 602 is configured to initiate a procedure of accessing an eMTC network before a network searching procedure of each frequency band in the first frequency band set is ended, specifically, to: displaying an identifier of a first eMTC network before the network searching process of each frequency band in a first frequency band set is finished; and initiating an access procedure for the first eMTC network upon receiving a selection instruction for the first eMTC network.
In the embodiment of the present application, the network access apparatus shown in fig. 5 and 6 may be constructed by running a computer program (including program codes) capable of executing the steps involved in the corresponding method shown in fig. 3 and 4 on a general-purpose computing apparatus such as a computer including a Central Processing Unit (CPU), a random access storage medium (RAM), a read-only storage medium (ROM), and the like as well as a storage element, and the network access method of the embodiment of the present application may be implemented. The computer program may be recorded on a computer-readable recording medium, for example, and loaded and executed in the above-described computing apparatus via the computer-readable recording medium.
Based on the same inventive concept, the principle and the beneficial effect of the network access apparatus for solving the problem provided in the embodiment of the present application are similar to the principle and the beneficial effect of the network access apparatus for solving the problem in the embodiment of the method of the present application, and for brevity, the principle and the beneficial effect of the implementation of the method may be referred to, and are not described herein again.
The embodiment of the present application further provides a computer-readable storage medium, in which one or more instructions are stored, and the one or more instructions are adapted to be loaded by a processor and execute the network access method of the foregoing method embodiment.
Embodiments of the present application also provide a computer program product containing instructions, which when run on a computer, cause the computer to execute the network access method of the above method embodiments.
It should be noted that, for simplicity of description, the above-mentioned embodiments of the method are described as a series of acts or combinations, but those skilled in the art should understand that the present application is not limited by the order of acts described, as some steps may be performed in other orders or simultaneously according to the present application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.
The steps in the method of the embodiment of the application can be sequentially adjusted, combined and deleted according to actual needs.
The modules in the device can be merged, divided and deleted according to actual needs.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, which may include: flash disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.
The above disclosure is only one preferred embodiment of the present invention, which is only a part of the present invention, and certainly not intended to limit the scope of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (10)
1. A method for network access, the method comprising:
acquiring a system message of a cell to be accessed, wherein the system message comprises indication information;
judging whether the cell to be accessed supports an enhanced machine type communication (eMTC) network or not according to the indication information;
if the cell to be accessed supports an eMTC network and the access to the LTE network fails, initiating a process of accessing the eMTC network before the network searching process of each frequency band in the first frequency band set is finished; the first set of frequency bands includes all frequency bands supporting the LTE network.
2. The method of claim 1, wherein the determining whether the cell to be accessed supports an eMTC network according to the indication information comprises:
and if the value of the indication information is nonzero, determining that the cell to be accessed supports an eMTC network.
3. The method of claim 1, wherein in the first set of frequency bands, the signal of the LTE cell in the first frequency band is strongest;
the failure to access the LTE network comprises: and the LTE cell under the first frequency band fails to be accessed.
4. The method according to any of claims 1-3, wherein the system message comprises a system message block 1-Bandwidth reduction SIB1-BR message;
the initiating the procedure of accessing the eMTC network includes:
and if the SIB1-BR message is read successfully and the eMTC network residence condition is met, registering in the eMTC network.
5. The method according to any one of claims 1 to 3, wherein the initiating the access procedure to the eMTC network before the network searching procedure of each frequency band in the first frequency band set is finished comprises:
displaying an identifier of a first eMTC network before the network searching process of each frequency band in a first frequency band set is finished;
initiating an access procedure for the first eMTC network upon receiving a selection instruction for the first eMTC network.
6. A network access apparatus, comprising:
the system comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring a system message of a cell to be accessed, and the system message comprises indication information;
the processing unit is used for judging whether the cell to be accessed supports an enhanced machine type communication (eMTC) network or not according to the indication information;
the processing unit is further configured to initiate a procedure of accessing the eMTC network before a network searching procedure of each frequency band in the first frequency band set is finished, when the cell to be accessed supports the eMTC network and the access to the long term evolution LTE network fails; the first set of frequency bands includes all frequency bands supporting the LTE network.
7. The apparatus of claim 6, wherein the processing unit is configured to determine whether the cell to be accessed supports an eMTC network according to the indication information, and specifically, when a value of the indication information is non-zero, determine that the cell to be accessed supports the eMTC network.
8. The apparatus of claim 6, wherein in the first set of frequency bands, the signal of the LTE cell in the first frequency band is strongest; the failure to access the LTE network comprises: and the LTE cell under the first frequency band fails to be accessed.
9. A network access device comprising a processor, a memory and a transceiver, the processor, the memory and the transceiver being interconnected, wherein the memory is configured to store a computer program comprising program instructions, and the processor is configured to invoke the program instructions to perform the method of any of claims 1-5.
10. A computer-readable storage medium having stored thereon one or more instructions adapted to be loaded by a processor and to perform the method of any of claims 1-5.
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