WO2016095463A1

WO2016095463A1 - Cell selection method, device, and system

Info

Publication number: WO2016095463A1
Application number: PCT/CN2015/081687
Authority: WO
Inventors: 史莉荣
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-12-17
Filing date: 2015-06-17
Publication date: 2016-06-23
Also published as: CN105792273A

Abstract

Disclosed are a cell selection method, device, and system. The method comprises: measuring signal quality of current each cell; selecting, according to a measurement value of the measured signal quality of each cell, a cell whose required signal quality threshold is less than the measurement value of the signal quality; determining, according to attributes of multiple selected cells, whether a machine type communication (MTC) dedicated cell exists, and accessing a corresponding cell according to a determining result. By means of the technical solutions provided in the present invention, a problem that an MTC device is lacking to select a corresponding cell for access is solved.

Description

Cell selection method, device and system

Technical field

The present invention relates to the field of communications, and in particular, to a method, device, and system for selecting a cell.

Background technique

The emergence and development of communication network technology has brought great changes to the face of social life. People can communicate more quickly and communicate more smoothly. However, at present, only computers and other Internet Technology (IT) devices have such communication and network capabilities, and a large number of ordinary machines have little networking and communication capabilities. These are not common to networking and communication capabilities. Machine equipment includes: home appliances, vehicles, vending machines, factory machinery and equipment.

As a key technology of the M2M (Machine to Machine) IoT system, Machine-Type Communications (MTC) has become an important research topic. M2M mainly refers to the real-time data exchange between machines and machines through the wireless network to transmit information to the back-end server network, that is, machine interconnection and intercommunication. M2M is the general term for all technologies that enhance the communication and networking capabilities of machine equipment. The goal of M2M technology is to enable networking and communication capabilities for all machines.

M2M enables machines, devices, and application processes to share information with back-end information systems and share information with operators. It provides a means for transmitting data in real time by establishing a wireless connection between systems, between remote devices, or between individuals. M2M technology integrates data acquisition, Global Positioning System (GPS), remote monitoring, telecommunications, and information technology. It is an ecosystem of computers, networks, devices, sensors, and humans. It can automate business processes and integrate corporate IT. Real-time status of systems and non-IT devices and creating value-added services. M2M technology platform can run and provide a wide range of applications and solutions in environments such as safety monitoring, automatic meter reading, mechanical service and repair services, vending machines, public transportation systems, fleet management, industrial process automation, electromechanical, and urban information technology. Program.

The M2M system is mainly composed of the following three parts:

Wireless terminal: In addition to commonly used mobile phones and notebook computers, it also includes various types of industrial application terminals;

Transmission channel: a data transmission channel from a wireless terminal to an industrial application center;

Industry Application Center: It is the convergence point of wireless terminal uploading data, and monitors distributed wireless terminals.

However, for the M2M network, how the MTC device selects the corresponding MTC dedicated cell lacks a corresponding solution technology.

In view of the problem that the MTC device lacks the selection of the corresponding cell for access in the prior art, an effective solution has not been proposed yet.

Summary of the invention

The embodiment of the invention provides a method, a device and a system for selecting a cell, so as to at least solve the problem that the MTC device lacks the selection of the corresponding cell for access in the prior art.

According to an embodiment of the present invention, a method for selecting a cell is provided, including:

Measure the signal quality of each current cell; according to the measured value of the signal quality of each cell obtained by the measurement, select a cell whose signal quality threshold is smaller than the measurement value of the signal quality; and determine whether according to the attributes of the selected multiple cells There is a machine-type communication MTC dedicated cell, and accesses the corresponding cell according to the judgment result.

In the embodiment of the present invention, the signal quality of each current cell is measured, including one of the following:

In the first method, the signal quality of each current cell is measured according to the signal to noise ratio of the pilot signal, and the signal to noise ratio of the pilot signal is expressed as: a ratio of the modulation bit rate to the noise spectral density (Radio of energy per modulating bit to the noise spectral density, Referred to as Ec/NO);

In the second mode, the signal quality of each current cell is measured according to Received Signal Code Power (RSCP);

The third method is based on the signal to noise ratio measurement of the pilot signal, and the RSCP measures the signal quality of each current cell.

In the embodiment of the present invention, before selecting a cell whose signal quality threshold is smaller than the measurement value of the signal quality, the method further includes:

Obtaining a cell list, where the cell list stores the signal quality thresholds required by each current cell and the attributes of each cell.

In the embodiment of the present invention, the cell that selects a signal quality threshold that is smaller than the measurement value of the signal quality, including:

According to the cell list, the cell with the signal quality threshold less than the measurement value of the signal quality required by the cell is selected from the cell list.

In the embodiment of the present invention, the MTC dedicated cell uses a part of the spectrum of the current network or a frequency point in the scattered spectrum.

In the embodiment of the present invention, the corresponding cell is accessed according to the judgment result by:

When the access device is an MTC device, and the determination result is yes, the MTC dedicated cell whose signal quality is greater than the preset threshold is selected to request access; if the determination result is negative, the selected signal quality is greater than the preset threshold. Non-MTC dedicated cell request access;

When the access device is a non-MTC device, and if the determination result is yes, the non-MTC dedicated cell is selected to request access.

According to another embodiment of the present invention, a cell selection apparatus is provided, including:

a measurement module configured to measure signal quality of each current cell;

Selecting a module, configured to select, according to the measured value of the signal quality of each cell measured by the measurement module, a cell whose required signal quality threshold is smaller than the measured value of the signal quality;

The determining module is configured to determine whether there is a machine-type communication MTC dedicated cell according to the attributes of the plurality of cells selected by the selecting module;

The access module is configured to access the corresponding cell according to the judgment result of the determining module.

In the embodiment of the present invention, the measurement module is configured to measure signal quality of each current cell, including one of the following:

The first measuring unit is configured to measure the signal quality of each current cell according to the signal to noise ratio of the pilot signal, and the signal to noise ratio of the pilot signal is expressed as: a ratio Ec/NO per modulation bit rate and noise spectral density;

a second measuring unit, configured to measure a signal quality of each current cell according to the received signal code power RSCP;

The third measuring unit is configured to measure the signal to noise ratio according to the pilot signal, and the RSCP measures the signal quality of each current cell.

In the embodiment of the present invention, the foregoing apparatus includes:

The acquiring module is configured to obtain a cell list, where the cell list stores the signal quality thresholds required by each current cell and the attributes of the respective cells, before the cell whose required signal quality threshold is smaller than the signal quality measurement value.

In the embodiment of the present invention, the module is selected, including:

The selecting unit is configured to select, according to the cell list, a cell from the cell list that the signal quality threshold required by the cell is smaller than the measured value of the signal quality.

In the embodiment of the present invention, the access module is configured to access the corresponding cell according to the determination result by using the following manner, including:

The first access unit is configured to: when the access device is an MTC device, and if the determination result is yes, the MTC dedicated cell whose signal quality is greater than the preset threshold is requested to access; if the determination result is no, And selecting a non-MTC dedicated cell whose signal quality is greater than a preset threshold to request access;

The second access unit is configured to select a non-MTC dedicated cell to request access when the access device is a non-MTC device, and if the determination result is yes.

According to another embodiment of the present invention, a cell selection system is provided, including: a machine type communication MTC device, a non-MTC device, a network side server, and a cell, where the MTC device and the non-MTC device pass the cell and the network side server. Establish a communication connection,

The MTC device and the non-MTC device measure the signal quality of each current cell; according to the measured value of the signal quality of each cell obtained by the measurement, the cell whose signal quality threshold is smaller than the signal quality measurement value is selected; The attribute of the multiple cells determines whether there is a machine-type communication MTC dedicated cell, and accesses the corresponding cell according to the judgment result, and establishes a communication connection with the network side server; when there are MTC dedicated cells in the attributes of the plurality of cells selected by the non-MTC device When you choose to join a non-MTC dedicated cell.

According to the embodiment of the present invention, the signal quality of each current cell is measured; according to the measured value of the signal quality of each cell obtained by the measurement, the cell whose signal quality threshold is smaller than the measurement value of the signal quality is selected; The attributes of the multiple cells determine whether there is a machine-type communication MTC dedicated cell, and access the corresponding cell according to the judgment result. The problem that the MTC device selects the corresponding cell for access is solved, and the effect of the MTC device accessing the corresponding cell is achieved.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a flowchart of a method for selecting a cell according to an embodiment of the present invention;

2 is a structural block diagram of a device for selecting a cell according to an embodiment of the present invention;

3 is a structural block diagram of a cell selection apparatus according to a preferred embodiment of the present invention;

4 is a structural block diagram of a cell selection apparatus according to a preferred embodiment of the present invention;

FIG. 5 is a structural block diagram of a cell selection apparatus according to a preferred embodiment of the present invention; FIG.

6 is a structural block diagram of a cell selection apparatus according to a preferred embodiment of the present invention;

7 is a structural block diagram of a cell selection system according to an embodiment of the present invention;

8 is a flow of a cell access by an MTC device; and,

FIG. 9 is a flow of a cell access by a non-MTC device.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

Embodiment 1

A method for selecting a cell is provided in this embodiment. FIG. 1 is a flowchart of a method for selecting a cell according to an embodiment of the present invention. As shown in FIG. 1, the process includes the following steps:

Step S102, measuring signal quality of each current cell;

In a preferred embodiment of the present invention, the method for selecting a cell according to the embodiment of the present invention is applicable to Machine-Type Communications (MTC), wherein the MTC device includes at least: a home appliance, a vehicle, a vending machine, The machine equipment of the factory, etc.; and the method for selecting a cell provided by the embodiment of the present invention is applicable to a network side server, an MTC device, a non-MTC device, and a communication network formed by each cell, where The network server may be a server cluster composed of multiple network servers, and the MTC device and the non-MTC device establish a communication connection with the network server through the access cell.

For example, the embodiment of the present invention is described by taking an MTC device as an example. The MTC device is described by taking a vending machine as an example. The vending machine is an access cell, and a communication connection is established between the cell and the provider server, so that the supplier passes the automatic. The network to which the vending machine is connected. Before accessing the cell, the vending machine needs to measure the signal quality of each cell currently acquired.

Step S104, selecting, according to the measured value of the signal quality of each cell obtained by the measurement, a cell whose required signal quality threshold is smaller than the measured value of the signal quality;

In the embodiment of the present invention, step S104 is combined with step S102, and the example in step S102 is taken as an example. It is assumed that the cell detected by the vending machine has three cells, which are cell A, cell B and cell C, respectively. The signal quality measurement value of the cell A measured by the vending machine is A1, the signal quality measurement value of the cell B measured by the vending machine is B1, and the signal quality measurement value of the cell C measured by the vending machine is C1, specifically As shown in Table 1:

Table 1

小区Community	信号质量测量值Signal quality measurement
小区Community	信号质量测量值Signal quality measurement	小区ACommunity A	A1A1
小区BCommunity B	B1B1	小区ACommunity A	A1A1
小区BCommunity B	B1B1	小区CCell C	C1C1

It is assumed that the required signal quality thresholds of the cells in the foregoing cell are: A2, the required signal quality threshold of cell A is A2, the required signal quality threshold of cell B is B2, and the required signal quality threshold of cell C is C2. ;

If the cell whose signal quality threshold is smaller than the measurement value of the signal quality is selected, that is, assuming that A1>A2, B1<B2, C1<C2, the cell A is selected.

Step S106: Determine, according to the attributes of the selected multiple cells, whether there is a machine-type communication MTC dedicated cell, and access the corresponding cell according to the judgment result.

In the embodiment of the present invention, there are two cases in step S106 combined with step S104:

Case 1: When the access device is an MTC device:

If the cell A is an MTC dedicated cell, access to the cell A;

If the cell A is not an MTC dedicated cell, the non-MTC dedicated cell whose access signal quality is greater than the signal quality threshold required by the cell.

Case 2: When the access device is a non-MTC device:

If the cell A is an MTC dedicated cell, a non-MTC dedicated cell whose signal quality measurement value is greater than a signal quality threshold required by the cell is selected.

The embodiment of the present invention is only described by taking a vending machine as an example, and the terminal access method provided by the embodiment of the present invention is implemented, which is not limited.

Through the above steps, the signal quality of each current cell is measured; according to the measured value of the signal quality of each cell obtained by the measurement, the cell whose signal quality threshold is smaller than the measurement value of the signal quality is selected; according to the selected multiple The attribute of the cell determines whether there is a machine-type communication MTC dedicated cell, and accesses the corresponding cell according to the judgment result. The problem that the MTC device selects the corresponding cell for access is solved, and the effect of the MTC device accessing the corresponding cell is achieved.

In the embodiment of the present invention, in step S102, the signal quality of each current cell is measured, including one of the following:

In the first method, the signal quality of each current cell is measured according to the signal to noise ratio of the pilot signal, and the signal to noise ratio of the pilot signal is expressed as: a ratio Ec/NO per modulation bit rate and noise spectral density;

In the second manner, the signal quality of each current cell is measured according to the received signal code power RSCP;

In the embodiment of the present invention, before the cell in which the signal quality threshold required by the cell is smaller than the measurement value of the signal quality is selected in the step S104, the method further includes:

Step S103: Acquire a cell list, where the cell list stores a signal quality threshold required by each current cell and attributes of each cell.

Specifically, as shown in Table 2, Table 2 includes signal quality thresholds required by each cell and each cell, and attributes of each cell;

Table 2

小区Community	小区所需的信号质量门限Signal quality threshold required by the cell	属性Attributes
小区Community	小区所需的信号质量门限Signal quality threshold required by the cell	属性Attributes	小区ACommunity A	A2A2	MTCMTC
小区BCommunity B	B2B2	非MTCnon-MTC	小区ACommunity A	A2A2	MTCMTC
小区BCommunity B	B2B2	非MTCnon-MTC	小区CCell C	C2C2	非MTCnon-MTC

In the embodiment of the present invention, in step S104, the cell in which the signal quality threshold required by the cell is smaller than the measured value of the signal quality is selected, including:

Specifically, in combination with Table 2, the cell from which the signal quality threshold required by the cell in Table 2 is smaller than the measured value of the signal quality,

That is, assuming that A1>A2, B1<B2, C1<C2, cell A is selected.

In the embodiment of the present invention, in step S106, accessing the corresponding cell according to the determination result, by:

When the access device is an MTC device, and the determination result is yes, the MTC dedicated cell whose signal quality is greater than the preset threshold is selected to request access;

If the judgment result is no, the non-MTC dedicated cell whose signal quality is greater than the preset threshold is selected to request access;

Specifically, in combination with the step S106, the difference between the non-MTC device and the MTC device selection cell access is that the example in step S106 is still taken as an example. When the non-MTC selects the access cell, if the cell A is the MTC. For the dedicated cell, the cell A is deleted from the cell list (as shown in Table 2), and the non-MTC dedicated cell whose signal quality is greater than the preset threshold is selected to request access.

In this embodiment, a device for selecting a cell is also provided, which is used to implement the foregoing embodiments and preferred embodiments, and is not described again. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

Embodiment 2

2 is a structural block diagram of a device for selecting a cell according to an embodiment of the present invention. As shown in FIG. 2, the device includes: a measurement module 22, a selection module 24, a determination module 26, and an access module 28, where

The measuring module 22 is configured to measure signal quality of each current cell;

The selecting module 24 is configured to select, according to the measured value of the signal quality of each cell measured by the measuring module, a cell whose required signal quality threshold is smaller than the measured value of the signal quality;

The determining module 26 is configured to determine whether there is a machine-type communication MTC dedicated cell according to the attributes of the plurality of cells selected by the selecting module;

The access module 28 is configured to access the corresponding cell according to the judgment result of the determining module.

In the embodiment of the present invention, FIG. 3 is a structural block diagram of a cell selection apparatus according to a preferred embodiment of the present invention. As shown in FIG. 3, the measurement module 22 is configured to measure signal quality of each current cell, including one of the following:

The first measuring unit 221 is configured to measure the signal quality of each current cell according to the signal to noise ratio of the pilot signal, and the signal to noise ratio of the pilot signal is expressed as: a ratio Ec/NO per modulation bit rate and noise spectral density;

The second measuring unit 222 is configured to measure signal quality of each current cell according to the received signal code power RSCP;

The third measuring unit 223 is configured to measure the signal to noise ratio according to the pilot signal, and the RSCP measures the signal quality of each current cell.

In the embodiment of the present invention, FIG. 4 is a structural block diagram of a device for selecting a cell according to a preferred embodiment of the present invention. As shown in FIG. 4, the device includes:

The obtaining module 32 is configured to obtain a cell list, where the cell list stores the signal quality thresholds required by the current cells and the attributes of the respective cells, before the cells whose required signal quality thresholds are smaller than the signal quality measurement values.

In the embodiment of the present invention, FIG. 5 is a structural block diagram of a device for selecting a cell according to a preferred embodiment of the present invention. As shown in FIG. 5, the module 24 includes:

The selecting unit 241 is configured to select, according to the cell list, a cell that is required by the cell to have a signal quality threshold smaller than a measurement value of the signal quality.

In the embodiment of the present invention, FIG. 6 is a structural block diagram of a device for selecting a cell according to a preferred embodiment of the present invention. As shown in FIG. 6, the access module 28 is configured to access a corresponding cell according to the judgment result. include:

The first access unit 281 is configured to: when the access device is an MTC device, and if the determination result is yes, select an MTC dedicated cell whose signal quality is greater than a preset threshold to request access; if the determination result is no And selecting a non-MTC dedicated cell whose signal quality is greater than a preset threshold to request access;

The second access unit 282 is configured to select a non-MTC dedicated cell to request access when the access device is a non-MTC device, and if the determination result is yes.

Embodiment 3

FIG. 7 is a structural block diagram of a cell selection system according to an embodiment of the present invention. As shown in FIG. 7, a cell selection system is provided, including: a machine type communication MTC device 72, a non-MTC device 74, and a network side server 76. a cell 78, wherein the MTC device 72 and the non-MTC device 74 establish a communication connection with the network side server 76 through the cell 78,

The MTC device 72 and the non-MTC device 74 measure the signal quality of each current cell 78; according to the measured value of the signal quality of each cell 78 obtained by the measurement, the cell whose cell quality threshold is less than the measurement value of the signal quality is selected. Determining whether there is a machine-type communication MTC dedicated cell according to the selected attributes of the plurality of cells, and accessing the corresponding cell according to the judgment result, and establishing a communication connection with the network side server;

When there is an MTC dedicated cell in the attributes of the plurality of cells 78 selected by the non-MTC device 74, the non-MTC dedicated cell is selected to join.

Specifically, the embodiment of the present invention provides a method for selecting a cell to solve how to reuse part of the spectrum of the existing network and apply the scattered spectrum to provide services for the MTC device.

The method provided by the embodiment of the present invention is as follows: The MTC dedicated cell is configured, and the cell frequency point is a part of the spectrum of the current network or a frequency point in the scattered spectrum. Notifying the user equipment of the cell: an MTC dedicated cell to indicate the MTC The device preferentially selects the cell when performing cell selection, or does not select the cell when the non-MTC device is used to perform cell selection.

When the MTC device performs initial cell selection or cell reselection, the MTC dedicated cell is preferred, and the specific steps are as follows:

Step 1: measuring signal quality of each cell;

Step 2: Select a cell whose cell measurement value is greater than a quality threshold required by the cell to form a list;

Step 3: If the attribute of the cell is an MTC dedicated cell, the MTC dedicated cell with the strongest signal is selected to access; otherwise, the cell with the strongest signal is selected in the cell list for access.

When the non-MTC device performs cell selection or cell reselection, the MTC dedicated cell is not selected. The specific steps are as follows:

Step 1: measuring signal quality of each cell;

Step 3: If there is an MTC dedicated cell in the cell list, the cell is removed, and the cell with the strongest signal is selected among the remaining cells.

Further, the signal quality of the measurement cell includes a pilot signal signal to noise ratio Ec/N0 or a received signal code power RSCP.

The method provided by the embodiment of the present invention can reuse part of the spectrum of the existing network and apply the scattered spectrum to provide services for the MTC device, thereby reducing the network deployment cost of the operator and not affecting the existing non-MTC service.

Specifically, the description will be made in conjunction with FIG. 8 and FIG. 9 :

FIG. 8 shows a flow of cell access by an MTC device.

Specifically, the following steps are included:

Step S802, the network side configures an MTC dedicated cell, and sets a cell frequency point, where the frequency of the cell is a part of the spectrum of the current network or a frequency point in the scattered spectrum. (3G is the radio network controller RNC, 4G is the enhanced node B eNodeB and the 5G network device), and the user equipment is notified that the cell attribute is an MTC dedicated cell;

Step S804, the MTC device measures signal quality of each cell.

The signal quality of the measurement cell includes a pilot signal to noise ratio Ec/N0 or a received signal code power RSCP.

Step S806, the MTC device selects a cell whose measured value of the cell is greater than the quality threshold required by the cell, and forms a list;

The quality threshold required by the community can be matched in the background.

In step S808, it is determined whether the attribute of the cell is only supported by the MTC cell, that is, if the attribute of the cell is an MTC-dedicated cell, step S810 is performed, otherwise, step S812 is performed;

Step S810, selecting the cell with the strongest signal access in the cell dedicated to the MTC;

Step S812, selecting the cell with the strongest signal in the cell list to perform access.

9 is a flow chart of a cell selection by a non-MTC device.

Step 902: The network side configures an MTC dedicated cell, and sets a cell frequency point, where the frequency of the cell is a part of the spectrum of the current network or a frequency point in the scattered spectrum. (3G is the radio network controller RNC, 4G is the enhanced node B eNodeB and the 5G network device), and the user equipment is notified that the cell attribute is an MTC dedicated cell;

Step S904, the non-MTC device measures signal quality of each cell;

Step S906, the non-MTC device selects a cell whose measured value of the cell is greater than the quality threshold required by the cell, and forms a list;

Step S908, the MTC dedicated cell in the cell list (that is, the cell supporting only the MTC) is removed;

Step S910, selecting the cell with the strongest signal access among the remaining cells.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

The embodiment of the present invention can be applied to the process of selecting a cell, and the signal quality of each current cell is measured. According to the measured value of the signal quality of each cell obtained by the measurement, the signal quality threshold required by the cell is selected to be smaller than the measurement value of the signal quality. The cell determines whether there is a machine-type communication MTC dedicated cell according to the selected attributes of the multiple cells, and accesses the corresponding cell according to the judgment result. The problem that the MTC device selects the corresponding cell for access is solved, and the effect of the MTC device accessing the corresponding cell is achieved.

Claims

A method for selecting a cell, comprising:

Measuring the signal quality of each current cell;

Determining, according to the measured value of the signal quality of each cell that is obtained by the measurement, a cell whose signal quality threshold is smaller than the measured value of the signal quality;

It is determined whether there is a machine-type communication MTC dedicated cell according to the selected attributes of the plurality of cells, and accesses the corresponding cell according to the judgment result.
The method of claim 1, wherein said measuring a signal quality of each of the current cells comprises one of the following:

In a first mode, the signal quality of each current cell is measured according to a signal to noise ratio of the pilot signal, and the signal to noise ratio of the pilot signal is expressed as: a ratio Ec/NO of each modulation bit rate and noise spectral density;

Manner 2: measuring, according to the received signal code power RSCP, the signal quality of each current cell;

In a third manner, according to the signal to noise ratio measurement of the pilot signal, and RSCP, the signal quality of each current cell is measured.
The method according to claim 1, wherein before the cell in which the signal quality threshold required for the cell is smaller than the measured value of the signal quality is selected, the method further includes:

Obtaining a cell list, where the cell list stores a signal quality threshold required by the current each cell and an attribute of each cell.
The method according to claim 3, wherein the cell required to select a cell with a signal quality threshold smaller than the measured value of the signal quality comprises:

And selecting, according to the cell list, a cell that is required by the cell to have a signal quality threshold smaller than a measurement value of the signal quality.
The method of claim 1 wherein the MTC dedicated cell uses a portion of the spectrum of the current network or a frequency point in the sporadic spectrum.
The method according to claim 1, wherein the accessing the corresponding cell according to the judgment result comprises:

When the access device is an MTC device, and the determination result is yes, the MTC dedicated cell whose signal quality is greater than the preset threshold is selected to request access; if the determination result is negative, the selected signal quality is greater than the pre- Setting a threshold for non-the MTC dedicated cell to request access;

When the access device is a non-MTC device, and if the determination result is yes, the non-MTC dedicated cell is selected to request access.
A cell selection device includes:

a measurement module configured to measure signal quality of each current cell;

The selecting module is configured to select, according to the measured value of the signal quality of each cell that is measured by the measuring module, a cell whose signal quality threshold is smaller than the measured value of the signal quality;

The determining module is configured to determine, according to the attributes of the plurality of cells selected by the selecting module, whether there is a machine-type communication MTC dedicated cell;

The access module is configured to access the corresponding cell according to the judgment result of the determining module.
The apparatus of claim 7, wherein the measurement module is configured to measure signal quality of each current cell, including one of the following:

a first measuring unit, configured to measure a signal quality of the current respective cells according to a signal to noise ratio of the pilot signal, where the signal to noise ratio of the pilot signal is expressed as: a ratio Ec/NO per modulation bit rate and noise spectral density;

a second measuring unit, configured to measure a signal quality of each current cell according to the received signal code power RSCP;

The third measuring unit is configured to measure the signal to noise ratio according to the pilot signal, and measure the signal quality of each current cell by using RSCP.
The apparatus of claim 7 wherein said apparatus comprises:

Obtaining a module, configured to acquire a cell list, where the cell list stores a signal quality threshold required by the current each cell, and before the cell that is required to select a cell with a signal quality threshold less than a measurement value of the signal quality The attributes of each cell.
The apparatus of claim 9, wherein the selecting module comprises:

The selecting unit is configured to select, according to the cell list, a cell that is required by the cell to have a signal quality threshold less than a measurement value of the signal quality.
The device according to claim 7, wherein the access module is configured to access the corresponding cell according to the determination result by:

The first access unit is configured to: when the access device is an MTC device, and if the determination result is yes, the MTC dedicated cell with the signal quality greater than the preset threshold is requested to access; if the determination result is no In the case that the selected MTC dedicated cell with the signal quality greater than the preset threshold is requested to access;

The second access unit is configured to select a non-MTC dedicated cell to request access when the access device is a non-MTC device, and if the determination result is yes.
A cell selection system, comprising: a machine type communication MTC device, a non-MTC device, a network side server, and a cell, wherein the MTC device and the non-MTC device establish a communication connection with the network side server through the cell ,

The MTC device and the non-MTC device measure the signal quality of each current cell; and according to the measured value of the signal quality of each cell obtained by the measurement, the signal quality threshold required to select the cell is smaller than the signal quality. a cell of the measured value; determining whether there is a machine-type communication MTC dedicated cell according to the selected attributes of the plurality of cells, and accessing the corresponding cell according to the judgment result, and establishing a communication connection with the network side server;

When the MTC dedicated cell exists in the attributes of the multiple cells selected by the non-MTC device, the non-MTC dedicated cell is selected to join.