CN108541030B

CN108541030B - Cell reselection method and device and user equipment

Info

Publication number: CN108541030B
Application number: CN201710123085.6A
Authority: CN
Inventors: 李俊强; 杜柏生; 李卫国; 田琛
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2017-03-03
Filing date: 2017-03-03
Publication date: 2021-05-18
Anticipated expiration: 2037-03-03
Also published as: CN108541030A

Abstract

A cell reselection method, a device and User Equipment (UE) are provided, and the method comprises the following steps: searching a cellular network neighbor cell and an MTC neighbor cell in an idle state; measuring the searched cellular network neighbor cell and the searched MTC neighbor cell; and determining a target cell as the MTC neighbor cell at least according to the measurement result and the reselection condition, wherein the target cell is a cell to be accessed. The technical scheme of the invention can ensure the communication quality of the user equipment in the scene of very low signal-to-noise ratio.

Description

Cell reselection method and device and user equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a cell reselection method, apparatus, and user equipment.

Background

In a Long Term Evolution (LTE) system, User Equipment (UE) periodically measures channel quality of neighboring cells and maintains a cell list for cell reselection. When the optimal cell in the cell list meets a certain criterion, the UE can list the cell as a target cell, acquire and verify the system information of the cell, and reselect the target cell after the verification is passed. When the cells in the cell list do not satisfy the reselection condition, the UE stays in the original cell and continues to measure the channel quality of the neighboring cell.

In the prior art, if the operating snr of the UE is lower than a certain value, for example, the lowest operating snr of a long term evolution-Advanced (LTE-Advanced) is-6 dB, the UE may check the signal quality of a neighboring cell, and if there is a cell with a higher snr, the UE reselects a target cell to ensure the communication quality of the UE.

However, when the UE is in a very low signal-to-noise ratio scenario (e.g., basement, mine, or area with poor coverage of base station), the channel quality of neighboring cells is poor. When the UE reselects the cell, the neighboring cell cannot satisfy the cell reselection condition, and the UE cannot reselect the appropriate target cell and cannot continue to perform reliable communication, or even cause interruption of the voice or data service of the UE, resulting in poor user experience.

Disclosure of Invention

The technical problem solved by the invention is how to improve the communication quality of the user equipment in a low signal-to-noise ratio scene.

In order to solve the foregoing technical problem, an embodiment of the present invention provides a cell reselection method, where the cell reselection method includes: searching a cellular network neighbor cell and an MTC neighbor cell in an idle state; measuring the searched cellular network neighbor cell and the searched MTC neighbor cell; and determining a target cell as the MTC neighbor cell at least according to the measurement result and the reselection condition, wherein the target cell is a cell to be accessed.

Optionally, the determining, according to at least the measurement result and the reselection condition, the target cell as the MTC neighbor cell includes: when the neighbor cell of the cellular network which completes the measurement does not meet the reselection condition and the MTC neighbor cell which completes the measurement meets the reselection condition, acquiring system information of the MTC neighbor cell which completes the measurement; verifying the system information of the MTC neighbor cell which completes the measurement; and after the verification is passed, determining the target cell as the MTC neighbor cell.

Optionally, the cell reselection method further includes: and accessing the MTC neighbor cell by using the system information, and communicating with the base station to which the MTC neighbor cell belongs by adopting an MTC mechanism.

Optionally, the communicating with the base station to which the MTC neighboring cell belongs by using the MTC mechanism includes: the method is repeated for a plurality of times in the time domain, and the communication is carried out in the frequency domain by adopting a frequency hopping mode.

Optionally, the step of the MTC neighboring cell completing the measurement meeting the reselection condition is to: the MTC neighbor cell completing the measurement meets S criteria and/or R criteria.

Optionally, the measuring the searched MTC neighbor cells includes: measuring at least one of a frequency, a cell identity, a reference signal received power and a reference signal received quality of the searched MTC neighbor cell.

Optionally, the searching for the cellular network neighbor cell and the MTC neighbor cell further includes: and adding the searched cellular network neighbor cell and the searched MTC neighbor cell into a cell list.

In order to solve the above technical problem, an embodiment of the present invention further discloses a cell reselection apparatus, including: the searching module is suitable for searching a cellular network neighbor cell and an MTC neighbor cell in an idle state; the measuring module is suitable for measuring the searched cellular network neighbor cell and the searched MTC neighbor cell; and the determining module is suitable for determining a target cell as the MTC neighbor cell at least according to the measurement result and the reselection condition, wherein the target cell is a cell to be accessed.

Optionally, the determining module includes: the system information acquisition unit is suitable for acquiring the system information of the MTC neighbor cell which completes the measurement when the neighboring cell of the cellular network which completes the measurement does not meet the reselection condition and the MTC neighbor cell which completes the measurement meets the reselection condition; the verification unit is suitable for verifying the system information of the MTC neighbor cell which completes the measurement; a determining unit, adapted to determine the target cell as the MTC neighbor cell after the verification is passed.

Optionally, the cell reselection apparatus further includes: and the access module is suitable for accessing the MTC neighbor cell by using the system information and communicating with the base station to which the MTC neighbor cell belongs by adopting an MTC mechanism.

Optionally, the access module includes: and the communication unit is suitable for repeating for multiple times in the time domain and communicating in a frequency domain by adopting a frequency hopping mode.

Optionally, the measurement module measures at least one of a frequency, a cell identifier, a reference signal received power, and a reference signal received quality of the searched MTC neighbor cell.

Optionally, the cell reselection apparatus further includes: and the adding module is suitable for adding the searched cellular network neighbor cell and the searched MTC neighbor cell into a cell list.

In order to solve the above technical problem, an embodiment of the present invention further discloses a user equipment, where the user equipment includes the cell reselection device.

Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:

in the technical scheme of the invention, when the UE is in an idle state, a cellular network neighbor cell and an MTC neighbor cell are searched; measuring the searched cellular network neighbor cell and the searched MTC neighbor cell; and determining a target cell as the MTC neighbor cell at least according to the measurement result and the reselection condition, wherein the target cell is a cell to be accessed. According to the technical scheme, when a cell is searched, a cellular network neighbor cell and an MTC neighbor cell are searched simultaneously, the searched MTC neighbor cell is measured, and finally a target cell is determined as the MTC neighbor cell according to a measurement result and a reselection condition; under the low signal-to-noise ratio scene, when no available cellular network adjacent cell can be selected, the MTC adjacent cell is actively reselected as a target cell, so that when data transmission exists, the MTC adjacent cell is used for data transmission, and the communication function including voice or data service is continuously and reliably completed by using the MTC technology; in addition, the MTC technology can also enable the communication function to be low in power consumption and wide in coverage.

Further, the determining the target cell as the MTC neighbor cell according to at least the measurement result and the reselection condition comprises: when the neighbor cell of the cellular network which completes the measurement does not meet the reselection condition and the MTC neighbor cell which completes the measurement meets the reselection condition, acquiring system information of the MTC neighbor cell which completes the measurement; verifying the system information of the MTC neighbor cell which completes the measurement; and after the verification is passed, determining the target cell as the MTC neighbor cell. According to the technical scheme, after the MTC neighbor cell meets the reselection condition, the UE is determined to support the communication of the MTC neighbor cell according to the system information, or the MTC neighbor cell is allowed to be accessed, and then the target cell is determined as the MTC neighbor cell, so that the UE can be further ensured to use the MTC neighbor cell for data transmission, and the communication quality of the user equipment is improved.

Drawings

Fig. 1 is a flowchart of a cell reselection method according to an embodiment of the present invention;

fig. 2 is a flow chart of another cell reselection method according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a cell reselection apparatus according to an embodiment of the present invention.

Detailed Description

As described in the background, when a UE is in a very low signal-to-noise ratio scenario (e.g., basement or an area where base station coverage is poor), the channel quality of neighboring cells is poor. When the UE reselects the cell, the neighboring cell cannot satisfy the cell reselection condition, and the UE cannot reselect the appropriate target cell and cannot continue to perform reliable communication, or even cause interruption of the voice or data service of the UE, resulting in poor user experience.

The invention provides a cell reselection method, which comprises the steps of searching a cellular network neighbor cell and an MTC neighbor cell simultaneously when searching a cell, measuring the searched MTC neighbor cell, and determining a target cell as the MTC neighbor cell according to a measurement result and reselection conditions; under the low signal-to-noise ratio scene, when no available cellular network adjacent cell can be selected, the MTC adjacent cell is actively reselected as a target cell, so that when data transmission exists, the MTC adjacent cell is used for data transmission, and the communication function including voice or data service is continuously and reliably completed by using the MTC technology; in addition, the MTC technology can also enable communication power consumption to be lower and coverage to be wider.

The MTC cell is a cell that communicates by using Machine Type Communications (MTC) technology. MTC is an internet of things technology based on LTE evolution. The MTC is deployed based on a cellular network, and can support the peak rate of 1Mbps of an uplink and a downlink at most.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Fig. 1 is a flowchart of a cell reselection method according to an embodiment of the present invention.

The cell reselection method of the embodiment of the invention can be executed on the user equipment side.

The cell reselection method shown in fig. 1 may include the following steps:

step S101: searching a cellular network neighbor cell and an MTC neighbor cell in an idle state;

step S102: measuring the searched cellular network neighbor cell and the searched MTC neighbor cell;

step S103: and determining a target cell as the MTC neighbor cell at least according to the measurement result and the reselection condition, wherein the target cell is a cell to be accessed.

In an implementation, when the UE is in an Idle state (Idle) and the quality of the serving cell signal is reduced (e.g., the signal quality is reduced due to location change, signal variation, etc.), cell reselection is usually performed to determine a suitable cell. The determined cell may be used when the UE is in a Connected state (Connected).

In a specific implementation, in step S101, the UE may perform a cell search operation. When searching for a cell, the UE may search for both a cellular network neighbor cell and an MTC neighbor cell. In particular, the purpose of cell search is to find one or more cells for measurement evaluation of their signal quality. Specifically, the cell search steps are as follows: through a primary Synchronization signal (primary Synchronization signal), the UE and the cell acquire time slot Synchronization; after the slot Synchronization, frame Synchronization is performed using a Synchronization code of a secondary Synchronization signal (secondary Synchronization signal).

It will be understood by those skilled in the art that the cellular network neighbor cell may be a cell for mobile communication using a cellular structure, for example, the cellular network neighbor cell may be a 2G (2-Generation)/3G (3-Generation)/4G (4-Generation)/5G (5-Generation) cellular network cell. Specifically, the 4G cellular network cell may be an LTE cell; the MTC cell may refer to a cell covered by a base station using MTC technology, for example, a CatM1 cell; the neighbor cell may refer to a cell adjacent to the serving cell. Because the data transmission mechanism in the MTC technology is different from the data transmission mechanism of the cellular network, under the low signal-to-noise ratio scene, the data transmission can be optimized by using the MTC cell, and the communication quality is improved.

It should be noted that the Machine Type communication may be a technology optimized for the LTE technology in the context of the internet of things, which enhances cruising ability and enlarges coverage, and the MTC at least includes enhanced Machine Type communication (eMTC) and Further enhanced Machine Type communication (funther enhanced MTC, FeMTC).

In a specific implementation, in step S102, the searched neighboring cells of the cellular network and the searched neighboring cells of the MTC are measured. Specifically, the cellular network neighbor cell and the MTC neighbor cell are measured respectively to obtain an evaluation of the signal quality of the cellular network neighbor cell and the MTC neighbor cell, and obtain measurement results of the searched cellular network neighbor cell and the searched MTC neighbor cell.

It is understood that, before step S102, the UE has completed the measurement of the serving cell and obtains the signal quality evaluation result of the serving cell. The cellular network neighbor cell and the MTC neighbor cell may be measured in a cell measurement manner in the prior art, which is not limited in the embodiment of the present invention.

In a specific implementation, in step S103, a target cell is determined as the MTC neighbor cell according to at least a measurement result and a reselection condition, where the target cell is a cell to be accessed. Specifically, the measurement result of the neighboring cell may be obtained through step S102, and in step S103, the measurement result of the neighboring cell is compared with the signal quality of the serving cell, and when the reselection condition is satisfied, the signal indicating the neighboring cell is better than the signal of the serving cell, and the neighboring cell may be determined as the target cell.

In specific implementation, under a scene of a cellular network system with a severe channel environment, a cell adjacent to a cellular network cannot be reselected as a target cell; the working signal-to-noise ratio of the MTC cell is much lower than that of the cellular network cell, and even if the signal-to-noise ratio is very low, the MTC cell can work normally. Therefore, when the cellular network neighbor cell does not satisfy the reselection condition, the MTC neighbor cell may satisfy the reselection condition, and then the MTC neighbor cell may be determined as the target cell. Further, since there are multiple repeated transmissions in the physical layer mechanism of the MTC technology, for example, up to 2048 times, the communication of the MTC cell is not affected by the low snr, and when determining the target cell, the target cell may be determined as an MTC neighbor cell.

In the embodiment of the invention, under the scene of low signal-to-noise ratio, when no available cellular network adjacent cell can be selected as the target cell, the MTC adjacent cell is actively reselected as the target cell, so that when data transmission exists, the MTC adjacent cell is used for data transmission, and the communication function including voice or data service is continuously and reliably completed by using the MTC technology; in addition, the MTC technology can also enable the communication function to be low in power consumption and wide in coverage.

It can be understood that, in this embodiment, the UE may support an MTC technology, and use an MTC mechanism for the internet of things to complete a normal function and support cell reselection of an MTC cell. Under the extremely severe channel condition, the UE may select to switch to the MTC mode to operate through the technical scheme shown in fig. 1, so as to ensure that communication is not interrupted.

Preferably, step S101 may be followed by the steps of: and adding the searched cellular network neighbor cell and the searched MTC neighbor cell into a cell list. Specifically, after the cell search is completed, the searched cellular network neighbor cell and the searched MTC neighbor cell may be added to a cell list, so that in subsequent measurement and other steps, corresponding measurement and other operations are performed on the cell according to the cell list. Specifically, the cell list may include cell identifiers and/or frequencies of cellular network neighbor cells and MTC neighbor cells.

Further, the UE may also maintain and update the cell list.

Preferably, step S102 may include the steps of: measuring at least one of a frequency, a cell identity, a Reference Signal Receiving Power (RSRP) and a Reference Signal Receiving Quality (RSRQ) of the searched MTC neighbor cell.

Preferably, step S103 may include the steps of: when the neighbor cell of the cellular network which completes the measurement does not meet the reselection condition and the MTC neighbor cell which completes the measurement meets the reselection condition, acquiring system information of the MTC neighbor cell which completes the measurement; verifying the system information of the MTC neighbor cell which completes the measurement; and after the verification is passed, determining the target cell as the MTC neighbor cell.

Specifically, the System Information of the MTC neighbor cell may include a Master Information Block (MIB) message, a System Information Block (System Information Block 1, SIB1) message, and a System Information (SI) message.

Specifically, after acquiring the system information of the MTC neighbor cell, the UE may determine whether the UE can support communication of the MTC neighbor cell according to the system information, or determine whether the MTC neighbor cell permits access. If yes, the verification is passed, and the UE can determine the target cell as the MTC neighbor cell.

Further, the MTC neighbor cell completing the measurement meeting the reselection condition means: the MTC neighbor cell completing the measurement meets S criteria and/or R criteria. It should be understood by those skilled in the art that the S-criterion (S-criterion) and the R-criterion (R-criterion) are cell selection criteria for cell reselection procedure of the LTE system, and the embodiment is not limited thereto. It should be further noted that, when determining whether the MTC neighbor cell and the cellular network neighbor cell satisfy the S criterion and/or the R criterion, the specific implementation and the threshold of the S criterion and/or the R criterion of the MTC cell may be different from the S criterion and/or the R criterion of the cellular network cell.

It should be noted that, when the target cell is determined according to the measurement result and the reselection condition, if there is a cellular network neighboring cell that meets the reselection condition, the UE determines the cellular network neighboring cell as the target cell; otherwise, the UE determines the MTC neighbor cell meeting the reselection condition as a target cell.

Preferably, the cell reselection method shown in fig. 1 may further include the following steps: and accessing the MTC neighbor cell by using the system information, and communicating with the base station to which the MTC neighbor cell belongs by adopting an MTC mechanism. That is, after determining that the target cell is the MTC neighbor cell, once the UE has data to send or receive, the UE may access the MTC neighbor cell, enter a connected state, and communicate with the base station to which the MTC neighbor cell belongs by using an MTC mechanism. In particular, the data communicated with the base station may be voice data.

The embodiment ensures that the MTC neighbor cell can be used for communication under the condition that the signal quality of the cellular network neighbor cell is poor, and the communication quality under the low signal-to-noise ratio scene is improved.

Further, the communicating with the base station to which the MTC neighboring cell belongs by using the MTC mechanism may include: the method is repeated for a plurality of times in the time domain, and the communication is carried out in the frequency domain by adopting a frequency hopping mode. Specifically, the MTC technology is different from the LTE system in a physical layer communication mechanism, and the MTC technology adopts a frequency hopping transmission mode in a frequency domain and a repeated transmission mode in time, so that normal communication under a low snr is ensured.

Fig. 2 is a flowchart of another cell reselection method according to an embodiment of the present invention.

In step S201, a search for a cellular network neighbor cell and a search for an MTC neighbor cell are performed. For the searched cellular network neighbor cells and MTC neighbor cells, a cell list may be added.

In step S202, a measurement is performed on the serving cell to obtain the signal quality of the serving cell. Specifically, RSRP and RSRQ of the serving cell may be measured.

In step S203, the cellular network neighbor cell and the MTC neighbor cell are measured to obtain the signal quality of the cellular network neighbor cell and the MTC neighbor cell. Specifically, respectively measuring a cellular network neighbor cell and an MTC neighbor cell in a cell list; and measuring to obtain the frequencies, cell identifiers, RSRP, RSRQ and the like of the cellular network neighbor cell and the MTC neighbor cell.

In step S204, the neighbor cell and the serving cell are evaluated. And determines whether the neighboring cell of the cellular network is better in step S205. That is, it is determined whether the signal quality of the cellular network neighbor cell and the MTC neighbor cell is better than that of the serving cell according to the measurement results of the serving cell, the cellular network neighbor cell, and the MTC neighbor cell. If the signal of the cellular network neighbor cell is better than the signal of the serving cell, step S206 is entered, otherwise step S208 is entered.

In step S206, system information of the neighboring cell of the cellular network is obtained and verified. Specifically, through system information of a cellular network neighbor cell, the UE may determine whether to support communication of the cell or whether the cellular network neighbor cell grants access. If yes, in step S207, it is determined that the target cell is a cellular network neighbor cell.

Similarly, in step S208, system information of the MTC neighbor cell is acquired and verified. Specifically, through the system information of the MTC neighbor cell, the UE may determine whether to support communication of the MTC neighbor cell or whether the MTC neighbor cell grants access. If yes, in step S209, it is determined that the target cell is a neighboring cell of the cellular network. Once the UE has data to transmit, the UE may access the MTC neighbor cell to send or receive the data.

The detailed implementation of this embodiment can refer to the embodiment shown in fig. 1, and is not described herein again.

The cell reselection apparatus 30 shown in fig. 3 may include a searching module 301, a measuring module 302, and a determining module 303. The cell reselection apparatus 30 of the present embodiment may be executed on the user equipment side.

The searching module 301 is adapted to search a cellular network neighbor cell and an MTC neighbor cell in an idle state; the measurement module 302 is adapted to measure the searched cellular network neighbor cell and the searched MTC neighbor cell; the determining module 303 is adapted to determine a target cell as the MTC neighbor cell according to at least the measurement result and the reselection condition, where the target cell is a cell to be accessed.

It is understood that the UE has completed the measurement of the serving cell and obtained the signal quality evaluation result of the serving cell before the measurement module 302 performs the measurement. The process of measuring the cellular network neighbor cell and the MTC neighbor cell by the measurement module 302 may use a cell measurement mode in the prior art, which is not limited in the embodiment of the present invention.

Further, under the scene of a cellular network system with a bad channel environment, a cellular network neighbor cell cannot be reselected as a target cell; the working signal-to-noise ratio of the MTC cell is much lower than that of the cellular network cell, and even if the signal-to-noise ratio is very low, the MTC cell can work normally. Therefore, when the cellular network neighbor cell does not satisfy the reselection condition, the MTC neighbor cell may satisfy the reselection condition, and then the MTC neighbor cell may be determined as the target cell. Further, since there are multiple repeated transmissions of the physical layer mechanism of the MTC technology, for example, up to 2048 times, the communication of the MTC cell is not affected by the low signal to noise ratio, and when determining the target cell, the target cell may be determined as an MTC neighbor cell.

When searching a cell, the embodiment of the invention simultaneously searches a cellular network neighbor cell and an MTC neighbor cell, measures the searched MTC neighbor cell, and finally determines a target cell as the MTC neighbor cell according to a measurement result and a reselection condition; under the low signal-to-noise ratio scene, when no available cellular network adjacent cell can be selected, the MTC adjacent cell is actively reselected as a target cell, so that when data transmission exists, the MTC adjacent cell is used for data transmission, and the communication function including voice or data service is continuously and reliably completed by using the MTC technology; in addition, the MTC technology can also enable the communication function to be low in power consumption and wide in coverage.

Preferably, the cell reselection apparatus 30 shown in fig. 3 may further include a joining module 304, where the joining module 304 is adapted to join the searched cellular network neighbor cell and the searched MTC neighbor cell into a cell list.

Preferably, the measuring module 302 may measure at least one of a frequency, a cell identity, a reference signal received power and a reference signal received quality of the searched MTC neighbor cell.

Preferably, the determination module 303 may include a system information acquisition unit 3031, a verification unit 3032, and a determination unit 3033. The system information obtaining unit 3031 is adapted to obtain the system information of the MTC neighbor cell that completes the measurement when the neighboring cell of the cellular network that completes the measurement does not satisfy the reselection condition and the MTC neighbor cell that completes the measurement satisfies the reselection condition; the verification unit 3032 is adapted to verify the system information of the MTC neighbor cell completing the measurement; the determining unit 3033 is adapted to determine the target cell as the MTC neighbor cell after the verification is passed.

Further, the MTC neighbor cell completing the measurement meeting the reselection condition means: the MTC neighbor cell completing the measurement meets S criteria and/or R criteria.

Preferably, the cell reselection apparatus 30 shown in fig. 3 may further include an access module 305. The access module 305 is adapted to access the MTC neighboring cell by using the system information, and communicate with the base station to which the MTC neighboring cell belongs by using an MTC mechanism.

Further, the access module 305 may include a communication unit 3051. The communication unit 3051 is adapted to repeat multiple times in the time domain and to communicate in the frequency domain using a frequency hopping scheme.

For more details of the operation principle and the operation manner of the cell reselection device 30, reference may be made to the relevant descriptions in fig. 1 to fig. 2, and details are not repeated here.

The embodiment of the present invention also discloses a user equipment, which may include the cell reselection apparatus 30 shown in fig. 3. The cell reselection device 30 may be internally integrated with the ue to implement the technical solution shown in fig. 1 or fig. 2. The user device may be a cell phone, a tablet, a computer, or the like.

It is understood that, in this embodiment, the user equipment may support MTC technology, and may communicate by using an MTC mechanism. That is, the ue may support cell reselection of the MTC cell and access of the MTC cell while completing normal functions.

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, and the storage medium may include: ROM, RAM, magnetic or optical disks, and the like.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method of cell reselection, comprising:

searching a cellular network neighbor cell and an MTC neighbor cell in an idle state;

measuring the searched cellular network neighbor cell and the searched MTC neighbor cell;

determining a target cell as the MTC neighbor cell at least according to the measurement result and reselection conditions, wherein the target cell is a cell to be accessed;

the determining the target cell as the MTC neighbor cell according to at least the measurement result and the reselection condition comprises: when the neighboring cell of the cellular network which completes the measurement does not meet the reselection condition and the MTC neighboring cell which completes the measurement meets the reselection condition, determining the target cell as the MTC neighboring cell, where the MTC neighboring cell which completes the measurement meets the reselection condition means: the MTC neighbor cell completing measurement meets S criteria and/or R criteria;

and if the adjacent cell of the cellular network meets the reselection condition, the UE determines the adjacent cell of the cellular network as a target cell.

2. The cell reselection method of claim 1, wherein the determining a target cell as the MTC neighbor cell according to at least the measurement result and the reselection condition comprises:

when the neighbor cell of the cellular network which completes the measurement does not meet the reselection condition and the MTC neighbor cell which completes the measurement meets the reselection condition, acquiring system information of the MTC neighbor cell which completes the measurement;

verifying the system information of the MTC neighbor cell which completes the measurement;

and after the verification is passed, determining the target cell as the MTC neighbor cell.

3. The cell reselection method of claim 2, further comprising:

and accessing the MTC neighbor cell by using the system information, and communicating with the base station to which the MTC neighbor cell belongs by adopting an MTC mechanism.

4. The cell reselection method of claim 3, wherein the communicating with the base station to which the MTC neighbor cell belongs by using the MTC mechanism comprises:

the method is repeated for a plurality of times in the time domain, and the communication is carried out in the frequency domain by adopting a frequency hopping mode.

5. The cell reselection method of claim 1, wherein the measuring the searched MTC neighbor cells comprises:

measuring at least one of a frequency, a cell identity, a reference signal received power and a reference signal received quality of the searched MTC neighbor cell.

6. The cell reselection method of claim 1, wherein after searching for the cellular network neighbor cell and the MTC neighbor cell, the method further comprises:

and adding the searched cellular network neighbor cell and the searched MTC neighbor cell into a cell list.

7. A cell reselection apparatus, comprising:

the searching module is suitable for searching a cellular network neighbor cell and an MTC neighbor cell in an idle state;

the measuring module is suitable for measuring the searched cellular network neighbor cell and the searched MTC neighbor cell;

a determining module, adapted to determine a target cell as the MTC neighbor cell according to at least a measurement result and a reselection condition, the target cell being a cell to be accessed,

the determining module determines the target cell as the MTC neighbor cell when the neighboring cell of the cellular network that completes the measurement does not satisfy the reselection condition and the MTC neighbor cell that completes the measurement satisfies the reselection condition, where the MTC neighbor cell that completes the measurement satisfies the reselection condition means: the MTC neighbor cell completing measurement meets S criteria and/or R criteria;

8. The cell reselection apparatus of claim 7, wherein the determining means comprises:

the system information acquisition unit is suitable for acquiring the system information of the MTC neighbor cell which completes the measurement when the neighboring cell of the cellular network which completes the measurement does not meet the reselection condition and the MTC neighbor cell which completes the measurement meets the reselection condition;

the verification unit is suitable for verifying the system information of the MTC neighbor cell which completes the measurement;

a determining unit, adapted to determine the target cell as the MTC neighbor cell after the verification is passed.

9. The cell reselection apparatus of claim 8, further comprising:

and the access module is suitable for accessing the MTC neighbor cell by using the system information and communicating with the base station to which the MTC neighbor cell belongs by adopting an MTC mechanism.

10. The cell reselection apparatus of claim 9, wherein the access module comprises:

and the communication unit is suitable for repeating for multiple times in the time domain and communicating in a frequency domain by adopting a frequency hopping mode.

11. The cell reselection apparatus of claim 7, wherein the measurement module measures at least one of a frequency, a cell identity, a reference signal received power, and a reference signal received quality of the searched MTC neighbor cell.

12. The cell reselection device of claim 7, further comprising:

and the adding module is suitable for adding the searched cellular network neighbor cell and the searched MTC neighbor cell into a cell list.

13. A user equipment comprising the cell reselection apparatus of any of claims 7 to 12.