CN112566222A - Access method, terminal and network side device - Google Patents
Access method, terminal and network side device Download PDFInfo
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- CN112566222A CN112566222A CN201910853421.1A CN201910853421A CN112566222A CN 112566222 A CN112566222 A CN 112566222A CN 201910853421 A CN201910853421 A CN 201910853421A CN 112566222 A CN112566222 A CN 112566222A
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
Abstract
The invention provides an access method, a terminal and network side equipment, belonging to the technical field of wireless communication, wherein the access method applied to the terminal comprises the following steps: when a terminal residing in a first cell needs to initiate random access, the terminal initiates random access to a target cell according to the related information of the target cell associated with the first cell. The invention can solve the problem of capacity limitation caused by the limited bandwidth of the first cell and improve the capacity of a communication system corresponding to the first cell.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to an access method, a terminal, and a network side device.
Background
For a narrowband communication system, since the system bandwidth is limited, the bandwidth that can be used for random access is also limited, which results in limited system capacity. For example, a narrowband Internet of Things (NB-IoT) system has a single carrier bandwidth of only 180KHz, and in order to increase the capacity of the NB-IoT system, multiple carriers may be configured for an NB-IoT cell, that is, one cell includes one anchor (anchor) carrier (also referred to as a primary carrier) and several non-anchor (non-anchor) carriers (or referred to as secondary carriers), and each carrier has a bandwidth of 180 KHz. Each cell can only have one anchor carrier, which can carry synchronization signals, broadcast channels, control channels and data channels, and a terminal (UE) needs to receive and monitor these information on the anchor carrier. The Non-anchor carrier carries only control and data channels and does not carry synchronization and broadcast channels. Therefore, the idle UE can only reside on the anchor carrier, and the random access process can only be performed on the anchor carrier. Terminals can only initiate random access on the anchor carrier (180KHz), which can result in limited capacity of the NB-IoT system needed to support massive connections.
Disclosure of Invention
In view of the above, the present invention provides an access method, a terminal and a network side device, which are used to solve the problem that the bandwidth of the current narrowband communication system, for example, a narrowband internet of things system, limits the system capacity.
In order to solve the foregoing technical problem, in a first aspect, the present invention provides an access method, applied to a terminal, including:
when a terminal residing in a first cell needs to initiate random access, the terminal initiates random access to a target cell according to the related information of the target cell associated with the first cell.
Optionally, the bandwidth of the target cell is greater than the bandwidth of the first cell.
Optionally, the bandwidth of the target cell and the bandwidth of the first cell are bandwidths for random access.
Optionally, the information related to the target cell includes at least one of:
frequency information;
cell identification information;
random access related information.
Optionally, before the step of initiating the random access to the target cell, the method further includes:
acquiring at least one second cell associated with the first cell;
determining the target cell from the at least one second cell.
Optionally, before the step of determining the target cell from the at least one second cell, the method further includes:
acquiring a preset threshold and/or a default second cell of the signal strength and/or quality related information of the first cell;
the preset threshold is as follows: a decision threshold for determining the target cell from the at least one second cell;
the default second cell is one of the at least one second cell.
Optionally, at least one of the related information of the target cell, the preset threshold, and the default second cell is issued through a system message broadcast by the first cell.
Optionally, the step of determining the target cell from the at least one second cell includes:
and if the measured signal intensity and/or the measured quality related information of the first cell are greater than or equal to the preset threshold, taking the default second cell as the target cell.
Optionally, the step of determining the target cell from the at least one second cell includes:
if the measured signal strength and/or quality related information of the first cell is smaller than the preset threshold, measuring the at least one second cell and acquiring a corresponding measured value of the signal strength and/or quality related information;
selecting a second cell with the highest signal strength and/or quality related information measurement value from the at least one second cell as the target cell; or screening out second cells of which the measured values of the signal strength and/or the quality related information meet the access threshold from the at least one second cell, and randomly selecting one of the screened second cells as the target cell.
In a second aspect, the present invention further provides an access method, applied to a network side device, including:
and issuing relevant information of a target cell, wherein the relevant information of the target cell is used for a terminal residing in a first cell to initiate random access to the target cell, and the target cell is associated with the first cell.
Optionally, the bandwidth of the target cell is greater than the bandwidth of the first cell.
Optionally, the bandwidth of the target cell and the bandwidth of the first cell are bandwidths for random access.
Optionally, the information related to the target cell includes at least one of:
frequency information;
cell identification information;
random access related information.
Optionally, the step of issuing the relevant information of the target cell includes:
and issuing related information of at least one second cell, wherein the at least one second cell is associated with the first cell, and the target cell is one of the at least one second cell.
Optionally, the method further includes:
issuing a preset threshold and/or a default second cell of the signal strength and/or quality related information of the first cell;
the preset threshold is as follows: a decision threshold for determining the target cell from the at least one second cell;
the default second cell is one of the at least one second cell.
Optionally, at least one of the related information of the at least one second cell, the preset threshold, and the default second cell is issued through a system message broadcast by the first cell.
In a third aspect, the present invention further provides a terminal, including:
a random access module, configured to initiate random access to a target cell according to relevant information of the target cell associated with a first cell when the terminal residing in the first cell needs to initiate random access.
Optionally, the bandwidth of the target cell is greater than the bandwidth of the first cell.
Optionally, the bandwidth of the target cell and the bandwidth of the first cell are bandwidths for random access.
Optionally, the information related to the target cell includes at least one of:
frequency information;
cell identification information;
random access related information.
Optionally, the terminal further includes:
a first obtaining module, configured to obtain at least one second cell associated with the first cell;
a determining module configured to determine the target cell from the at least one second cell.
Optionally, the terminal further includes:
a second obtaining module, configured to obtain a preset threshold and/or a default second cell of the signal strength and/or quality related information of the first cell;
the preset threshold is as follows: a decision threshold for determining the target cell from the at least one second cell;
the default second cell is one of the at least one second cell.
Optionally, at least one of the related information of the target cell, the preset threshold, and the default second cell is issued through a system message broadcast by the first cell.
Optionally, the determining module includes:
a first determining unit, configured to take the default second cell as the target cell if the measured signal strength and/or quality related information of the first cell is greater than or equal to the preset threshold.
Optionally, the determining module includes:
a measuring unit, configured to measure the at least one second cell and obtain a corresponding measured value of the signal strength and/or the quality-related information if the measured signal strength and/or the quality-related information of the first cell is smaller than the preset threshold;
a second determining unit, configured to select, as the target cell, a second cell with a highest measured value of signal strength and/or quality-related information from the at least one second cell; or screening out second cells of which the measured values of the signal strength and/or the quality related information meet the access threshold from the at least one second cell, and randomly selecting one of the screened second cells as the target cell.
In a fourth aspect, the present invention further provides a network side device, including:
a sending module, configured to issue relevant information of a target cell, where the relevant information of the target cell is used for a terminal residing in a first cell to initiate random access to the target cell, and the target cell is associated with the first cell.
Optionally, the bandwidth of the target cell is greater than the bandwidth of the first cell.
Optionally, the bandwidth of the target cell and the bandwidth of the first cell are bandwidths for random access.
Optionally, the information related to the target cell includes at least one of:
frequency information;
cell identification information;
random access related information.
Optionally, the sending module is configured to issue related information of at least one second cell, where the at least one second cell is associated with the first cell, and the target cell is one of the at least one second cell.
Optionally, the network side device further includes:
the issuing module is used for issuing a preset threshold and/or a default second cell of the signal strength and/or quality related information of the first cell;
the preset threshold is as follows: a decision threshold for determining the target cell from the at least one second cell;
the default second cell is one of the at least one second cell.
Optionally, at least one of the related information of the at least one second cell, the preset threshold, and the default second cell is issued through a system message broadcast by the first cell.
In a fifth aspect, the present invention further provides a terminal, including: a transceiver and a processor;
the processor is configured to initiate random access to a target cell according to relevant information of the target cell associated with a first cell when the terminal residing in the first cell needs to initiate random access.
Optionally, the bandwidth of the target cell is greater than the bandwidth of the first cell.
Optionally, the bandwidth of the target cell and the bandwidth of the first cell are bandwidths for random access.
Optionally, the information related to the target cell includes at least one of:
frequency information;
cell identification information;
random access related information.
Optionally, the transceiver is configured to acquire at least one second cell associated with the first cell;
the processor is further configured to determine the target cell from the at least one second cell.
Optionally, the transceiver is further configured to acquire a preset threshold and/or a default second cell of the signal strength and/or the quality related information of the first cell;
the preset threshold is as follows: a decision threshold for determining the target cell from the at least one second cell;
the default second cell is one of the at least one second cell.
Optionally, at least one of the related information of the target cell, the preset threshold, and the default second cell is issued through a system message broadcast by the first cell.
Optionally, the processor is further configured to take the default second cell as the target cell if the measured signal strength and/or quality related information of the first cell is greater than or equal to the preset threshold.
Optionally, the processor is further configured to measure the at least one second cell and obtain a corresponding measured value of the signal strength and/or the quality related information if the measured signal strength and/or the quality related information of the first cell is smaller than the preset threshold;
the processor is further configured to select a second cell with a highest measured value of signal strength and/or quality related information from the at least one second cell as the target cell; or screening out second cells of which the measured values of the signal strength and/or the quality related information meet the access threshold from the at least one second cell, and randomly selecting one of the screened second cells as the target cell.
In a sixth aspect, the present invention further provides a network side device, including: a transceiver and a processor;
the transceiver is configured to issue related information of a target cell, where the related information of the target cell is used for a terminal residing in a first cell to initiate random access to the target cell, and the target cell is associated with the first cell.
Optionally, the bandwidth of the target cell is greater than the bandwidth of the first cell.
Optionally, the bandwidth of the target cell and the bandwidth of the first cell are bandwidths for random access.
Optionally, the information related to the target cell includes at least one of:
frequency information;
cell identification information;
random access related information.
Optionally, the transceiver is configured to issue related information of at least one second cell, where the at least one second cell is associated with the first cell, and the target cell is one of the at least one second cell.
Optionally, the transceiver is further configured to issue a preset threshold and/or a default second cell of the signal strength and/or the quality related information of the first cell;
the preset threshold is as follows: a decision threshold for determining the target cell from the at least one second cell;
the default second cell is one of the at least one second cell.
Optionally, at least one of the related information of the at least one second cell, the preset threshold, and the default second cell is issued through a system message broadcast by the first cell.
In a seventh aspect, the present invention further provides a terminal, including a memory, a processor, and a computer program stored in the memory and executable on the processor; the processor implements any of the above access methods applied to the terminal when executing the computer program.
In an eighth aspect, the present invention further provides a network-side device, including a memory, a processor, and a computer program stored in the memory and executable on the processor; the processor implements any of the above access methods applied to the network side device when executing the computer program.
In a ninth aspect, the present invention also provides a computer readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, performs the steps of any of the above-mentioned access methods.
The technical scheme of the invention has the following beneficial effects:
in the embodiment of the invention, the terminal residing in the first cell can initiate random access to another cell associated with the first cell, namely the target cell, so that the problem of capacity limitation caused by the limited bandwidth of the first cell is solved, and the capacity of a communication system corresponding to the first cell is improved.
Drawings
Fig. 1 is a flowchart illustrating an access method according to a first embodiment of the present invention;
fig. 2 is a flowchart illustrating an access method according to a second embodiment of the present invention;
FIG. 3 is a diagram illustrating a network scenario in which a third embodiment of the present invention is applicable;
FIG. 4 is a diagram illustrating a network scenario in which the fourth embodiment of the present invention is applicable;
fig. 5 is a schematic structural diagram of a terminal in a fifth embodiment of the present invention;
fig. 6 is a schematic structural diagram of a network-side device in a sixth embodiment of the present invention;
fig. 7 is a schematic structural diagram of a terminal in a seventh embodiment of the present invention;
fig. 8 is a schematic structural diagram of a network-side device in an eighth embodiment of the present invention;
fig. 9 is a schematic structural diagram of a terminal according to a ninth embodiment of the present invention;
fig. 10 is a schematic structural diagram of a network-side device in a tenth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic flowchart of an access method according to an embodiment of the present invention, where the method is applied to a terminal, and includes the following steps:
step 11: when a terminal residing in a first cell needs to initiate random access, the terminal initiates random access to a target cell according to the related information of the target cell associated with the first cell. That is, if the terminal resides in a first cell and needs to initiate random access, the terminal initiates random access to a target cell according to the related information of the target cell associated with the first cell.
It should be noted that, in the embodiment of the present invention, the "associating" specifically may refer to that coverage areas overlap, that is, there is an overlapping portion between the coverage area of the target cell and the coverage area of the first cell, and in the embodiment of the present invention, the terminal is located in the coverage overlapping area between the target cell and the first cell when initiating the random access.
In the embodiment of the present invention, the terminal camping on the first cell may initiate random access to another cell associated with the first cell, that is, the target cell. Therefore, the problem of capacity limitation caused by the limited bandwidth of the first cell is solved, and the capacity of a communication system corresponding to the first cell is improved.
In addition, the embodiment of the invention is mainly suitable for the scene that the terminal needs to be switched from the idle state to the connection state.
The above access method is exemplified below.
Optionally, the bandwidth of the target cell is greater than the bandwidth of the first cell.
That is, a terminal residing on a narrower carrier (e.g., NB-IoT carrier) may initiate random access on a wider carrier (e.g., NR carrier).
In this embodiment of the present invention, the terminal may be an NB-IoT terminal, the first cell may be an NB-IoT system cell (the bandwidth that can be used for random access is only 180KHz), and the target cell may be a New Radio (NR) system cell (the bandwidth that can be used for random access is 5MHz at minimum). Of course, the terminal is not limited to NB-IoT terminals, the first cell may also be other narrowband communication system cells, and the target cell may also be a wideband communication system cell other than an NR system cell, for example, a Long Term Evolution (LTE) system cell, and so on, which are not listed in detail herein.
Further optionally, the bandwidth of the target cell and the bandwidth of the first cell are bandwidths for random access. That is to say, in the embodiment of the present invention, the bandwidth that can be used for random access in the target cell is greater than the bandwidth that can be used for random access in the first cell.
Optionally, the information related to the target cell includes at least one of:
frequency information;
cell identification information;
random access related information.
In the embodiment of the present invention, the Cell Identifier information may be a Physical Cell Identifier (PCI). The random access related information includes at least one of access parameter information and access resource information.
Optionally, before the step of initiating the random access to the target cell, the method further includes:
the terminal acquires at least one second cell associated with the first cell;
the terminal determines the target cell from the at least one second cell.
Specifically, the obtained related information of the at least one second cell includes frequency information and/or cell identification information, and may also include random access related information.
Further optionally, before the step of determining the target cell from the at least one second cell, the method further includes:
the terminal acquires a preset threshold and/or a default (default) second cell of the signal strength and/or the quality related information of the first cell;
the preset threshold is as follows: a decision threshold for determining the target cell from the at least one second cell;
the default second cell is one of the at least one second cell.
Specifically, the Signal strength and/or quality related information may be Reference Signal Received Power (RSRP). In other alternative embodiments, the Signal Strength and/or Quality related information may also be Reference Signal Received Quality (RSRQ), Received Signal Strength (RSS), or Signal to Interference plus Noise Ratio (SINR). Of course, the signal strength and/or quality related information may also include a combination of two or more of RSRP, RSRQ, RSS, and SINR at the same time.
In the embodiment of the present invention, the preset threshold is determined according to deployment conditions on the network side and/or a determination process for determining the target cell.
In addition, the default second cell is determined according to network deployment conditions, and may be a second cell deployed co-sited with the first cell, for example. The purpose of setting the default second cell is to reduce the measurement workload of the terminal, for example, if the default second cell is co-located with the first cell, if the terminal measures that the signal strength and/or quality related information (e.g., RSRP) of the first cell is greater than a threshold, it may be considered that the current location of the terminal is within the coverage of the default second cell, or the downlink signal strength of the default second cell that can be received by the terminal satisfies the access condition. It can also be said that if the default second cell is co-located with the first cell, if the terminal measures the signal strength and/or quality related information (e.g. RSRP) of the first cell to be greater than a threshold value, it can be considered that the measured signal strength and/or quality related information must satisfy the access threshold if the terminal measures the default second cell.
Optionally, at least one of the related information of the target cell, the preset threshold, and the default second cell is issued through a system message broadcast by the first cell.
That is to say, the related information of the target cell may be issued by the system message broadcasted by the first cell, the preset threshold may also be issued by the system message broadcasted by the first cell, and similarly, the default second cell may also be issued by the system message broadcasted by the first cell.
It should be noted that, if the target cell is one of the second cells associated with the first cell, the related information of the target cell is sent together with the related information of other second cells through the system message of the first cell, that is, the related information of all the second cells associated with the first cell is carried in the system message of the first cell. In addition, if the system message of the first cell carries the related information of a plurality of second cells, after the target cell is determined, the corresponding random access related information may be acquired in the system message of the first cell according to the PCI of the target cell.
Additionally, if there is only one second cell associated with the first cell, there may be no need to indicate a default second cell in the system message of the first cell. That is, if the system message only carries the related information of one second cell, the second cell is the target cell, and the second cell does not need to be indicated as the default second cell.
Optionally, the step of determining the target cell from the at least one second cell includes:
and if the measured signal intensity and/or the measured quality related information of the first cell are greater than or equal to the preset threshold, the terminal takes the default second cell as the target cell.
In the embodiment of the present invention, a preset threshold of signal strength and/or quality related information of a first cell is first determined according to a network deployment situation, and a determination principle of the preset threshold is as follows: if the terminal measures that the signal quality information of the first cell is greater than or equal to the preset threshold, the default second cell can be considered as the cell which the terminal is suitable to access. Therefore, if the measured signal strength and/or quality related information of the first cell is greater than or equal to the preset threshold, the terminal does not need to perform measurement on the second cell, and the measurement workload of the terminal is reduced.
Optionally, the step of determining the target cell from the at least one second cell includes:
if the measured signal strength and/or quality related information of the first cell is smaller than the preset threshold, the terminal measures the at least one second cell and obtains a corresponding measured value of the signal strength and/or quality related information;
the terminal selects a second cell with the highest signal strength and/or quality related information measurement value from the at least one second cell as the target cell; or, the terminal selects second cells whose signal strength and/or quality related information measured values satisfy an access threshold from the at least one second cell, and randomly selects one (second cell) from the selected second cells as the target cell.
That is, the terminal selects the target cell by measurement in the following two ways:
and firstly, selecting a second cell with the highest signal strength and/or quality related information (such as RSRP) measurement value as the target cell.
Second, second cells with signal strength and/or quality related information (such as RSRP) measured values meeting the access threshold are screened out, and if the signal strength and/or quality related information (such as RSRP) measured values of a plurality of second cells meet the access threshold, one of the second cells is selected randomly as a target cell.
Of course, if the measured signal strength and/or quality related information of the first cell is smaller than the preset threshold, in order to reduce the measurement workload of the terminal, it may also be possible to perform measurement only on other second cells without performing measurement on the default second cell, and select the target cell from the other second cells according to the measurement result.
In other optional embodiments, the number of the preset thresholds of the signal strength and/or quality related information of the first cell may be multiple, and the number of the second cells associated with the first cell is also multiple. The terminal measures to obtain the signal strength and/or the quality related information measurement value of the first cell, and then determines the target cell according to a preset threshold that is met by the signal strength and/or the quality related information measurement value of the first cell, or in other words, determines the target cell according to a target range in which the signal strength and/or the quality related information measurement value of the first cell is located. The multiple preset thresholds correspond to value ranges of multiple signal strength and/or quality related information measured values, and the target range is one of the value ranges.
Specifically, if the target range in which the signal strength and/or the quality related information measurement value of the first cell is located corresponds to only one second cell, the second cell is determined as the target cell. And if the target range in which the signal strength and/or quality related information measurement value of the first cell is located corresponds to two or more second cells, randomly selecting one of the two or more second cells as a target cell, or measuring the two or more second cells and selecting one of the two or more second cells as the target cell according to the measurement result. For example, selecting a second cell with the highest measured value of the signal strength and/or the quality related information from the two or more second cells as the target cell; or, screening out the second cells whose signal strength and/or quality related information measured values meet the access threshold from the two or more second cells, and randomly selecting one of the screened second cells as the target cell.
For example, there are two preset thresholds for the signal strength and/or quality related information (specifically RSRP) of the first cell, RSRP1 and RSRP 2. There are 6 second cells associated with the first cell, cell a, cell B, cell C, cell D, cell E, and cell F. If the signal strength and/or quality related information measurement value of the first cell is greater than or equal to RSRP2, then corresponding cell a; if the signal strength and/or quality related information measurement value of the first cell is less than RSRP2 and greater than or equal to RSRP1, then corresponding cell B and cell C; if the signal strength and/or quality related information measurement value of the first cell is less than RSRP1, then cell D, cell E, and cell F correspond. Thus, if the signal strength and/or quality related information measurement value of the first cell is greater than or equal to RSRP2, then cell a is the target cell. If the signal strength and/or quality related information measurement value of the first cell is less than RSRP2 and greater than or equal to RSRP1, firstly measuring a cell B and a cell C, obtaining a corresponding signal strength and/or quality related information measurement value, and then selecting the cell B with higher signal strength and/or quality related information measurement value as a target cell; if the signal strength and/or quality related information measurement value of the first cell is less than RSRP1, cell D, cell E, and cell F are measured first, and the corresponding signal strength and/or quality related information measurement values are obtained, and then cell E with the highest signal strength and/or quality related information measurement value is selected as the target cell.
The multiple preset thresholds in the embodiment of the present invention may be specifically determined according to a network deployment situation. Setting a plurality of preset thresholds, obtaining the signal strength and/or quality related information measured value of the first cell by measuring the first cell, judging which range the signal strength and/or quality related information measured value belongs to (determined by the preset thresholds), and finally judging whether the second cell needs to be measured or not and which second cells need to be measured according to the range the signal strength and/or quality related information measured value belongs to. Thus, the measurement work of the terminal can be reduced.
As can be seen from the above, in the embodiment of the present invention, the target cell may also be determined directly according to the measurement result of the terminal without setting the default second cell. One preset threshold may correspond to a plurality of second cells, that is, one range determined by the preset threshold may correspond to a plurality of second cells.
Referring to fig. 2, fig. 2 is a flowchart illustrating an access method according to a second embodiment of the present invention, where the method is applied to a network side device, and includes the following steps:
step 21: the network side equipment issues related information of a target cell, the related information of the target cell is used for a terminal residing in a first cell to initiate random access to the target cell, and the target cell is associated with the first cell.
In this embodiment of the present invention, the network side device is a network side device corresponding to the first cell.
It should be noted that, in the embodiment of the present invention, the "associating" specifically may refer to that coverage areas overlap, that is, there is an overlapping portion between the coverage area of the target cell and the coverage area of the first cell, and in the embodiment of the present invention, the terminal is located in the coverage overlapping area between the target cell and the first cell when initiating the random access.
In the embodiment of the invention, the terminal residing in the first cell can initiate random access to another cell associated with the first cell, namely the target cell, so that the problem of capacity limitation caused by the limited bandwidth of the first cell is solved, and the capacity of a communication system corresponding to the first cell is improved.
In addition, the embodiment of the invention is mainly suitable for the scene that the terminal needs to be switched from the idle state to the connection state.
The random access method described above is exemplified below.
Optionally, the bandwidth of the target cell is greater than the bandwidth of the first cell.
Optionally, the bandwidth of the target cell and the bandwidth of the first cell are bandwidths for random access.
In the embodiment of the present invention, the terminal may be an NB-IoT terminal, the first cell may be an NB-IoT system cell, and correspondingly, the network side device may be a network side device of an NB-IoT system. The target cell may be a New Radio (NR) system cell. Of course, the terminal is not limited to NB-IoT terminals, the first cell may also be other narrowband communication system cells, and the target cell may also be a wideband communication system cell other than an NR system cell, for example, a Long Term Evolution (LTE) system cell, and so on, which are not listed in detail herein.
Optionally, the information related to the target cell includes at least one of:
frequency information;
cell identification information;
random access related information.
Optionally, the step of issuing the relevant information of the target cell includes:
the network side equipment issues related information of at least one second cell, the at least one second cell is associated with the first cell, and the target cell is one of the at least one second cell.
Optionally, the method further includes:
the network side equipment issues a preset threshold and/or a default second cell of the signal intensity and/or quality related information of the first cell;
the preset threshold is as follows: a decision threshold for determining the target cell from the at least one second cell;
the default second cell is one of the at least one second cell.
Optionally, at least one of the related information of the at least one second cell, the preset threshold, and the default second cell is issued through a system message broadcast by the first cell.
That is to say, the network side device may issue the related information of the at least one second cell through the system message of the first cell (that is, the resident cell of the terminal), may issue the preset threshold through the system message of the first cell, and may issue the default second cell through the system message of the first cell.
The embodiments of the present invention provide technical solutions corresponding to the above embodiments and having the same inventive concept, and can achieve the same technical effects.
An embodiment of the present invention provides an access method, as shown in fig. 3, where the access method is applicable to the following scenarios: an NB-IoT terminal currently resides in an NB-IoT system cell, and associated with the NB-IoT system cell are three NR cells (i.e., NR system cells): an NR cell 1 co-sited with the NB-IoT system cell, and NR cells 2 and 3 having coverage overlapping with the NB-IoT system cell. Since the NB-IoT system is deployed at a low frequency (e.g., 900MHz) and the NR system is deployed at an intermediate frequency (e.g., 2.6GHz), the coverage of the NB-IoT system cell is larger than the NR cell.
Firstly, the network side device carries the following information in the system message of the NB-IoT system cell:
frequency information, PCI, and access parameters of the three NR cells;
an RSRP threshold of the NB-IoT system cell, the RSRP threshold being used to select a target cell;
NR cell 1 is the default access cell.
Then, when the NB-IoT terminal needs to initiate random access, the RSRP of the NB-IoT system cell is measured.
And finally, determining a target cell for random access according to the RSRP measurement value of the NB-IoT system cell. If the RSRP measurement value of the NB-IoT system cell is greater than or equal to the RSRP threshold, it indicates that the NB-IoT terminal is in the coverage of NR cell 1, and at this time, the NB-IoT terminal does not need to measure the NR cell and directly initiates random access in NR cell 1 (the default access cell). If the RSRP measurement value of the NB-IoT system cell is less than the RSRP threshold, it indicates that the NB-IoT terminal may be in the coverage of the NR cell 2 or NR cell 3, and at this time, the NB-IoT terminal starts the measurement on the NR cell and measures the RSRP of the NR cell 2 and NR cell 3. If the NB-IoT terminal measures that the RSRP value of NR cell 2 is high (e.g., the NB-IoT terminal is located at location B), then random access is initiated at NR cell 2; if the NB-IoT terminal measures a higher RSRP value for NR cell 3 (e.g., the NB-IoT terminal is located at location a), then random access is initiated at NR cell 3.
An embodiment of the present invention provides an access method, as shown in fig. 4, where the access method is applicable to the following scenarios: an NB-IoT terminal currently resides in an NB-IoT system cell, and there is only one NR cell associated with the NB-IoT system cell, since the NR system and the NB-IoT system are deployed on the same frequency band and the NR cell is co-sited with the NB-IoT system cell where the NB-IoT terminal currently resides, and therefore their coverage is the same.
Firstly, the network side device carries the following information in the system message of the NB-IoT system cell:
frequency information, PCI, and access parameters of the NR cell.
Then, when the NB-IoT terminal needs to initiate random access, it does not need to measure the NR cell, and directly initiates random access in the NR cell indicated by the system message.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a terminal according to a fifth embodiment of the present invention, where the terminal 50 includes:
a random access module 51, configured to initiate a random access to a target cell according to related information of the target cell associated with a first cell when the terminal residing in the first cell needs to initiate the random access.
In the embodiment of the invention, the terminal residing in the first cell can initiate random access to another cell associated with the first cell, namely the target cell, so that the problem of limited random access capacity caused by limited bandwidth of the first cell is solved, and the capacity of a communication system corresponding to the first cell is improved.
Optionally, the bandwidth of the target cell is greater than the bandwidth of the first cell.
Optionally, the bandwidth of the target cell and the bandwidth of the first cell are bandwidths for random access.
Optionally, the information related to the target cell includes at least one of:
frequency information;
cell identification information;
random access related information.
Optionally, the terminal further includes:
a first obtaining module, configured to obtain at least one second cell associated with the first cell;
a determining module configured to determine the target cell from the at least one second cell.
Optionally, the terminal further includes:
a second obtaining module, configured to obtain a preset threshold and/or a default second cell of the signal strength and/or quality related information of the first cell;
the preset threshold is as follows: a decision threshold for determining the target cell from the at least one second cell;
the default second cell is one of the at least one second cell.
Optionally, at least one of the related information of the target cell, the preset threshold, and the default second cell is issued through a system message broadcast by the first cell.
Optionally, the determining module includes:
a first determining unit, configured to take the default second cell as the target cell if the measured signal strength and/or quality related information of the first cell is greater than or equal to the preset threshold.
Optionally, the determining module includes:
a measuring unit, configured to measure the at least one second cell and obtain a corresponding measured value of the signal strength and/or the quality-related information if the measured signal strength and/or the quality-related information of the first cell is smaller than the preset threshold;
a second determining unit, configured to select, as the target cell, a second cell with a highest measured value of signal strength and/or quality-related information from the at least one second cell; or screening out second cells of which the measured values of the signal strength and/or the quality related information meet the access threshold from the at least one second cell, and randomly selecting one of the screened second cells as the target cell.
The embodiment of the present invention is a product embodiment corresponding to the above method embodiment, and therefore, detailed description is omitted here, and please refer to the first embodiment in detail.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a network-side device according to a sixth embodiment of the present invention, where the network-side device 60 includes:
a sending module 61, configured to issue relevant information of a target cell, where the relevant information of the target cell is used for a terminal residing in a first cell to initiate random access to the target cell, and the target cell is associated with the first cell.
In the embodiment of the invention, the terminal residing in the first cell can initiate random access to another cell associated with the first cell, namely the target cell, so that the problem of limited random access capacity caused by limited bandwidth of the first cell is solved, and the capacity of a communication system corresponding to the first cell is improved.
Optionally, the bandwidth of the target cell is greater than the bandwidth of the first cell.
Optionally, the bandwidth of the target cell and the bandwidth of the first cell are bandwidths for random access.
Optionally, the information related to the target cell includes at least one of:
frequency information;
cell identification information;
random access related information.
Optionally, the sending module 61 is configured to issue related information of at least one second cell, where the at least one second cell is associated with the first cell, and the target cell is one of the at least one second cell.
Optionally, the network side device further includes:
the issuing module is used for issuing a preset threshold and/or a default second cell of the signal strength and/or quality related information of the first cell;
the preset threshold is as follows: a decision threshold for determining the target cell from the at least one second cell;
the default second cell is one of the at least one second cell.
Optionally, at least one of the related information of the at least one second cell, the preset threshold, and the default second cell is issued through a system message broadcast by the first cell.
The embodiment of the present invention is a product embodiment corresponding to the above method embodiment, and therefore, detailed description is omitted here, and please refer to the second embodiment.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a terminal according to a seventh embodiment of the present invention, where the terminal 70 includes: a transceiver 71 and a processor 72;
the processor 72 is configured to initiate random access to a target cell according to relevant information of the target cell associated with a first cell when the terminal residing in the first cell needs to initiate random access.
In the embodiment of the invention, the terminal residing in the first cell can initiate random access to another cell associated with the first cell, namely the target cell, so that the problem of limited random access capacity caused by limited bandwidth of the first cell is solved, and the capacity of a communication system corresponding to the first cell is improved.
Optionally, the bandwidth of the target cell is greater than the bandwidth of the first cell.
Optionally, the bandwidth of the target cell and the bandwidth of the first cell are bandwidths for random access.
Optionally, the information related to the target cell includes at least one of:
frequency information;
cell identification information;
random access related information.
Optionally, the transceiver 71 is configured to acquire at least one second cell associated with the first cell;
the processor 72 is further configured to determine the target cell from the at least one second cell.
Optionally, the transceiver 71 is further configured to acquire a preset threshold and/or a default second cell of the signal strength and/or the quality related information of the first cell;
the preset threshold is as follows: a decision threshold for determining the target cell from the at least one second cell;
the default second cell is one of the at least one second cell.
Optionally, at least one of the related information of the target cell, the preset threshold, and the default second cell is issued through a system message broadcast by the first cell.
Optionally, the processor 72 is further configured to take the default second cell as the target cell if the measured signal strength and/or the measured quality-related information of the first cell is greater than or equal to the preset threshold.
Optionally, the processor 72 is further configured to measure the at least one second cell and obtain a corresponding measured value of the signal strength and/or the quality related information if the measured signal strength and/or the quality related information of the first cell is smaller than the preset threshold;
the processor 72 is further configured to select a second cell with a highest measured value of signal strength and/or quality related information from the at least one second cell as the target cell; or screening out second cells of which the measured values of the signal strength and/or the quality related information meet the access threshold from the at least one second cell, and randomly selecting one of the screened second cells as the target cell.
The embodiment of the present invention is a product embodiment corresponding to the above method embodiment, and therefore, detailed description is omitted here, and please refer to the first embodiment in detail.
Referring to fig. 8, fig. 8 is a schematic structural diagram of a network-side device according to an eighth embodiment of the present invention, where the network-side device 80 includes: a transceiver 81 and a processor 82;
the transceiver 81 is configured to issue related information of a target cell, where the related information of the target cell is used for a terminal residing in a first cell to initiate random access to the target cell, and the target cell is associated with the first cell.
In the embodiment of the invention, the terminal residing in the first cell can initiate random access to another cell associated with the first cell, namely the target cell, so that the problem of limited random access capacity caused by limited bandwidth of the first cell is solved, and the capacity of a communication system corresponding to the first cell is improved.
Optionally, the bandwidth of the target cell is greater than the bandwidth of the first cell.
Optionally, the bandwidth of the target cell and the bandwidth of the first cell are bandwidths for random access.
Optionally, the information related to the target cell includes at least one of:
frequency information;
cell identification information;
random access related information.
Optionally, the transceiver 81 is configured to issue related information of at least one second cell, where the at least one second cell is associated with the first cell, and the target cell is one of the at least one second cell.
Optionally, the transceiver 81 is further configured to issue a preset threshold and/or a default second cell of the signal strength and/or the quality related information of the first cell;
the preset threshold is as follows: a decision threshold for determining the target cell from the at least one second cell;
the default second cell is one of the at least one second cell.
Optionally, at least one of the related information of the at least one second cell, the preset threshold, and the default second cell is issued through a system message broadcast by the first cell.
The embodiment of the present invention is a product embodiment corresponding to the above method embodiment, and therefore, detailed description is omitted here, and please refer to the second embodiment.
Referring to fig. 9, fig. 9 is a schematic structural diagram of a terminal according to a ninth embodiment of the present invention, where the terminal 90 includes a processor 91, a memory 92, and a computer program stored in the memory 92 and capable of running on the processor 91; the processor 91, when executing the computer program, performs the following steps:
when a terminal residing in a first cell needs to initiate random access, the terminal initiates random access to a target cell according to the related information of the target cell associated with the first cell.
In the embodiment of the invention, the terminal residing in the first cell can initiate random access to another cell associated with the first cell, namely the target cell, so that the problem of limited random access capacity caused by limited bandwidth of the first cell is solved, and the capacity of a communication system corresponding to the first cell is improved.
Optionally, the bandwidth of the target cell is greater than the bandwidth of the first cell.
Optionally, the bandwidth of the target cell and the bandwidth of the first cell are bandwidths for random access.
Optionally, the information related to the target cell includes at least one of:
frequency information;
cell identification information;
random access related information.
Optionally, when the processor 91 executes the computer program, the following steps may be further implemented:
before the step of initiating random access to the target cell, the method further includes:
acquiring at least one second cell associated with the first cell;
determining the target cell from the at least one second cell.
Optionally, when the processor 91 executes the computer program, the following steps may be further implemented:
before the step of determining the target cell from the at least one second cell, the method further includes:
acquiring a preset threshold and/or a default second cell of the signal strength and/or quality related information of the first cell;
the preset threshold is as follows: a decision threshold for determining the target cell from the at least one second cell;
the default second cell is one of the at least one second cell.
Optionally, at least one of the related information of the target cell, the preset threshold, and the default second cell is issued through a system message broadcast by the first cell.
Optionally, when the processor 91 executes the computer program, the following steps may be further implemented:
the step of determining the target cell from the at least one second cell comprises:
and if the measured signal intensity and/or the measured quality related information of the first cell are greater than or equal to the preset threshold, taking the default second cell as the target cell.
Optionally, when the processor 91 executes the computer program, the following steps may be further implemented:
the step of determining the target cell from the at least one second cell comprises:
if the measured signal strength and/or quality related information of the first cell is smaller than the preset threshold, measuring the at least one second cell and acquiring a corresponding measured value of the signal strength and/or quality related information;
selecting a second cell with the highest signal strength and/or quality related information measurement value from the at least one second cell as the target cell; or screening out second cells of which the measured values of the signal strength and/or the quality related information meet the access threshold from the at least one second cell, and randomly selecting one of the screened second cells as the target cell.
The specific working process of the embodiment of the present invention is the same as that of the first embodiment of the method, and therefore, detailed description is not repeated here, and please refer to the description of the method steps in the first embodiment.
Referring to fig. 10, fig. 10 is a schematic structural diagram of a network-side device according to a tenth embodiment of the present invention, where the network-side device 100 includes a processor 101, a memory 102, and a computer program stored in the memory 102 and capable of running on the processor 101; the processor 101, when executing the computer program, implements the following steps:
and issuing relevant information of a target cell, wherein the relevant information of the target cell is used for a terminal residing in a first cell to initiate random access to the target cell, and the target cell is associated with the first cell.
In the embodiment of the invention, the terminal residing in the first cell can initiate random access to another cell associated with the first cell, namely the target cell, so that the problem of limited random access capacity caused by limited bandwidth of the first cell is solved, and the capacity of a communication system corresponding to the first cell is improved.
Optionally, the bandwidth of the target cell is greater than the bandwidth of the first cell.
Optionally, the bandwidth of the target cell and the bandwidth of the first cell are bandwidths for random access.
Optionally, the information related to the target cell includes at least one of:
frequency information;
cell identification information;
random access related information.
Optionally, when the processor 101 executes the computer program, the following steps may be further implemented:
the step of sending the relevant information of the target cell comprises the following steps:
and issuing related information of at least one second cell, wherein the at least one second cell is associated with the first cell, and the target cell is one of the at least one second cell.
Optionally, when the processor 101 executes the computer program, the following steps may be further implemented:
issuing a preset threshold and/or a default second cell of the signal strength and/or quality related information of the first cell;
the preset threshold is as follows: a decision threshold for determining the target cell from the at least one second cell;
the default second cell is one of the at least one second cell.
Optionally, at least one of the related information of the at least one second cell, the preset threshold, and the default second cell is issued through a system message broadcast by the first cell.
The specific working process of the embodiment of the present invention is the same as that of the second embodiment of the method, and therefore, the detailed description thereof is omitted, and refer to the description of the method steps in the second embodiment.
An eleventh embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the access method according to any one of the first embodiment and the second embodiment. Please refer to the above description of the method steps in the corresponding embodiments.
The network side device in the embodiment of the present invention may be a Base Transceiver Station (BTS) in Global System for Mobile communication (GSM) or Code Division Multiple Access (CDMA), may also be a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), may also be an evolved Node B (evolved Node B, eNB or eNodeB) in LTE, or a relay Station or Access point, or a Base Station in a future 5G network, and the like, which is not limited herein.
The terminal in the embodiments of the present invention may be a wireless terminal or a wired terminal, and the wireless terminal may be a device providing voice and/or other service data connectivity to a user, a handheld device having a wireless connection function, or other processing devices connected to a wireless modem. A wireless terminal, which may be a mobile terminal such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal, e.g., a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more core networks via a Radio Access Network (RAN), and may exchange language and/or data with the RAN. For example, devices such as Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs) are used. A wireless Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), and a Terminal (User Device or User Equipment), which are not limited herein.
The computer-readable storage media described above, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (23)
1. An access method applied to a terminal, the method comprising:
when a terminal residing in a first cell needs to initiate random access, the terminal initiates random access to a target cell according to the related information of the target cell associated with the first cell.
2. The method of claim 1, wherein the bandwidth of the target cell is greater than the bandwidth of the first cell.
3. The method of claim 2, wherein the bandwidth of the target cell and the bandwidth of the first cell are bandwidths for random access.
4. The method of claim 1, wherein the information related to the target cell comprises at least one of:
frequency information;
cell identification information;
random access related information.
5. The method of claim 1, wherein the step of initiating random access to the target cell is preceded by the step of:
acquiring at least one second cell associated with the first cell;
determining the target cell from the at least one second cell.
6. The method of claim 5, wherein the step of determining the target cell from the at least one second cell is preceded by:
acquiring a preset threshold and/or a default second cell of the signal strength and/or quality related information of the first cell;
the preset threshold is as follows: a decision threshold for determining the target cell from the at least one second cell;
the default second cell is one of the at least one second cell.
7. The method of claim 6, wherein at least one of the information related to the target cell, the preset threshold and the default second cell is a system message broadcast by the first cell.
8. The method of claim 6, wherein the step of determining the target cell from the at least one second cell comprises:
and if the measured signal intensity and/or the measured quality related information of the first cell are greater than or equal to the preset threshold, taking the default second cell as the target cell.
9. The method of claim 6, wherein the step of determining the target cell from the at least one second cell comprises:
if the measured signal strength and/or quality related information of the first cell is smaller than the preset threshold, measuring the at least one second cell and acquiring a corresponding measured value of the signal strength and/or quality related information;
selecting a second cell with the highest signal strength and/or quality related information measurement value from the at least one second cell as the target cell; or screening out second cells of which the measured values of the signal strength and/or the quality related information meet the access threshold from the at least one second cell, and randomly selecting one of the screened second cells as the target cell.
10. An access method is applied to a network side device, and is characterized by comprising the following steps:
and issuing relevant information of a target cell, wherein the relevant information of the target cell is used for a terminal residing in a first cell to initiate random access to the target cell, and the target cell is associated with the first cell.
11. The method of claim 10, wherein the bandwidth of the target cell is greater than the bandwidth of the first cell.
12. The method of claim 11, wherein the bandwidth of the target cell and the bandwidth of the first cell are bandwidths for random access.
13. The method of claim 10, wherein the information related to the target cell comprises at least one of:
frequency information;
cell identification information;
random access related information.
14. The method of claim 10, wherein the step of sending information related to the target cell comprises:
and issuing related information of at least one second cell, wherein the at least one second cell is associated with the first cell, and the target cell is one of the at least one second cell.
15. The method of claim 14, further comprising:
issuing a preset threshold and/or a default second cell of the signal strength and/or quality related information of the first cell;
the preset threshold is as follows: a decision threshold for determining the target cell from the at least one second cell;
the default second cell is one of the at least one second cell.
16. The method of claim 15, wherein at least one of the related information of the at least one second cell, the preset threshold and the default second cell is a system message transmission broadcast by the first cell.
17. A terminal, comprising:
a random access module, configured to initiate random access to a target cell according to relevant information of the target cell associated with a first cell when the terminal residing in the first cell needs to initiate random access.
18. A network-side device, comprising:
a sending module, configured to issue relevant information of a target cell, where the relevant information of the target cell is used for a terminal residing in a first cell to initiate random access to the target cell, and the target cell is associated with the first cell.
19. A terminal, comprising: a transceiver and a processor;
the processor is configured to initiate random access to a target cell according to relevant information of the target cell associated with a first cell when the terminal residing in the first cell needs to initiate random access.
20. A network-side device, comprising: a transceiver and a processor;
the transceiver is configured to issue related information of a target cell, where the related information of the target cell is used for a terminal residing in a first cell to initiate random access to the target cell, and the target cell is associated with the first cell.
21. A terminal comprising a memory, a processor and a computer program stored on the memory and executable on the processor; characterized in that the processor, when executing the computer program, implements the access method according to any one of claims 1 to 9.
22. A network-side device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor; characterized in that the processor, when executing the computer program, implements the access method according to any of claims 10 to 16.
23. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the access method according to any one of claims 1 to 16.
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| CN201910853421.1A CN112566222B (en) | 2019-09-10 | 2019-09-10 | Access method, terminal and network side device |
| PCT/CN2020/113962 WO2021047497A1 (en) | 2019-09-10 | 2020-09-08 | Access method, terminal and network side device |
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| CN107734712A (en) * | 2016-08-12 | 2018-02-23 | 电信科学技术研究院 | A kind of accidental access method and equipment |
| CN108430115A (en) * | 2018-03-02 | 2018-08-21 | 奇酷互联网络科技（深圳）有限公司 | Control method, device and the mobile terminal of random access |
| CN109041228A (en) * | 2017-06-12 | 2018-12-18 | 维沃移动通信有限公司 | Information transferring method, base station, mobile terminal and computer readable storage medium |
| US20190124655A1 (en) * | 2017-10-20 | 2019-04-25 | Shanghai Langbo Communication Technology Company Limited | Method and device in user equipment and base station for wireless communications |
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| WO2007052971A1 (en) * | 2005-11-04 | 2007-05-10 | Lg Electronics Inc. | Random access dimensioning methods and procedures for frequency division multiplexing access systems |
| KR102078167B1 (en) * | 2013-01-25 | 2020-02-17 | 삼성전자 주식회사 | Method and apparatus to control the mobility for small cell in the mobile communicaion system |
| CN109640362B (en) * | 2017-10-09 | 2021-05-28 | 中国移动通信有限公司研究院 | Link reconstruction method, device and computer readable storage medium |
| CN110012515A (en) * | 2019-02-28 | 2019-07-12 | 努比亚技术有限公司 | A kind of call failure processing method, terminal and computer readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107734712A (en) * | 2016-08-12 | 2018-02-23 | 电信科学技术研究院 | A kind of accidental access method and equipment |
| CN109041228A (en) * | 2017-06-12 | 2018-12-18 | 维沃移动通信有限公司 | Information transferring method, base station, mobile terminal and computer readable storage medium |
| US20190124655A1 (en) * | 2017-10-20 | 2019-04-25 | Shanghai Langbo Communication Technology Company Limited | Method and device in user equipment and base station for wireless communications |
| CN108430115A (en) * | 2018-03-02 | 2018-08-21 | 奇酷互联网络科技（深圳）有限公司 | Control method, device and the mobile terminal of random access |
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