CN109803337A - A kind of method and terminal of cell reselection - Google Patents

Abstract

The present embodiments relate to a kind of method of cell reselection and terminals.This method comprises: terminal resides in first community；When the signal quality of the first community meets the first preset condition lower than the relationship between preset level and the signal strength of the first community and the signal strength of second community, the terminal is initiated from the first community to the cell reselection of the second community；Wherein, the second community is the co-frequency neighbor cell of the first community or the iso-frequency adjacent community of All factors being equal, preference will be give to grade.The embodiment of the present invention promotes terminal when serving cell signal quality is poor, can rapid reselection to other adjacent cells, to increase call successful rate and reduce service delay, the user experience is improved.

Description

A kind of method and terminal of cell reselection

This application claims in submission on November 17th, 2017 Patent Office of the People's Republic of China, application No. is 201711149021.X, application This Shen is hereby incorporated by reference in a kind of priority of the Chinese patent application of entitled " method of cell reselection ", entire contents Please in.

Technical field

The present invention relates to the communications field more particularly to the methods and terminal of a kind of cell reselection.

Background technique

In cell mobile communication systems, after terminal is resident cell, cell reselection can be carried out.Pass through cell weight Choosing, can farthest guarantee that the terminal under idle mode resides in suitable cell.The resident cell of terminal is commonly referred to as The serving cell of terminal, at the idling mode, terminal can pass through the adjacent cell measuring magnitude to serving cell and serving cell Monitoring, carrys out triggering cell gravity treatment.

In long term evolution (Long Term Evolution, LTE) system, cell reselection includes intra-frequency cells gravity treatment With two kinds of cell reselection of alien frequencies.Wherein, intra-frequency cells gravity treatment, that is, gravity treatment to serving cell co-frequency neighbor cell, serving cell Co-frequency neighbor cell between there is no the differentiation of priority.Cell reselection, that is, gravity treatment of alien frequencies to the iso-frequency adjacent community of serving cell, There are the differentiations of priority between the iso-frequency adjacent community of serving cell, determine generally according to the service frequency of iso-frequency adjacent community different The priority of iso-frequency adjacent community in the cell reselection of frequency, priority value between 0 to 7, wherein 0 to represent priority minimum, and 7 Represent highest priority.

The cell reselection of alien frequencies size priority-based, terminal usually can always attempt to reside in high small of priority Area.In cell reselection of the terminal to high priority, as long as the assessment parameter (for example, signal strength) of the cell of high priority is super Certain threshold value (also referred to as " threshold value ") is crossed, regardless of serving cell signal, terminal will carry out gravity treatment to high priority cell. To low priority cell reselection when, need to meet simultaneously the assessment parameter of serving cell lower than certain threshold value, low priority The assessment parameter of cell, which is higher than certain threshold value, could occur gravity treatment.In the prior art, when terminal carries out cell reselection, for service The iso-frequency adjacent community of the co-frequency neighbor cell of cell or serving cell All factors being equal, preference will be give to grade, in order to reduce gravity treatment oscillation, for adjacent small Area it is more demanding, in fact it could happen that long-time cell reselection is unsuccessful, and the calling and called success rate so as to cause terminal is low or terminal Service delay it is long, user experience is bad.

Summary of the invention

The embodiment of the invention provides a kind of method of cell reselection and terminal, this method promotes terminal to believe in serving cell When number second-rate, can rapid reselection to other adjacent cells, to increase call successful rate and reduce service delay, mention User experience is risen.

In a first aspect, providing a kind of method of cell reselection.Terminal resides in first community；When the signal of first community Quality meets first lower than the relationship between preset level and the signal strength of first community and the signal strength of second community When preset condition, terminal initiates the cell reselection from first community to second community；Wherein, second community is the same of first community Frequency adjacent district or the iso-frequency adjacent community of All factors being equal, preference will be give to grade.

The iso-frequency adjacent community of the embodiment of the present invention, co-frequency neighbor cell for serving cell or All factors being equal, preference will be give to grade, not only Relationship between the signal strength of serving cell and the signal strength of adjacent cell is met into preset condition as the one of cell reselection Item reselection conditions, and the signal quality of cell is lower than preset level as another reselection conditions, when this two gravity treatment items When part all meets, cell reselection is initiated immediately, thus promote terminal when serving cell signal quality is poor, it being capable of rapid reselection To other adjacent cells, to increase call successful rate and reduce service delay, the user experience is improved.

In a kind of possible embodiment, the signal quality of first community includes Signal to Interference plus Noise Ratio (Signal to Interference plus Noise Ratio, SINR) or Reference Signal Received Quality (Reference Signal Receiving Quality, RSRQ), before the cell reselection that terminal initiates from first community to second community, Terminal obtains the SINR of the first community or RSRQ of first community；When the SINR of first community or the RSRQ of first community are less than When one preset threshold, terminal determines the signal quality of first community lower than preset level.According to this, embodiment there is provided two kinds Measure the mode of cell signal quality superiority and inferiority.

In a kind of possible embodiment, before the cell reselection that terminal initiates from first community to second community, The assessed value R of terminal calculating first community_s, the assessed value R of first community_s=Q_meas,s+Q_Hyst-Q_{offset temp}；Wherein, Q_meas,s For the Reference Signal Received Power (Reference Signal Receiving Power, RSRP) of first community, Q_HystIt is The hysteresis effect value of the RSRP of one cell, Q_{offset temp}For the temporary bias value of first community；Terminal calculates commenting for second community Valuation R_n, the assessed value R of second community_n=Q_meas,n-Q_offset-Q_{offset temp}；Wherein, Q_meas,nFor the RSRP of second community, Q_offsetFor the deviant of second community, Q_{offset temp}For the temporary bias value of second community；Work as R_nGreater than R_sWhen, terminal determines Relationship between the signal strength of first community and the signal strength of second community meets the first preset condition.It needs to illustrate It is the R in the first preset condition_n>R_sAnd its definition of each relevant parameter can be 3GPP standard TS36.304 acquisition, the present invention Embodiment does not change relevant parameter and meaning of parameters.According to the embodiment, by calculate serving cell assessed value and The assessed value of adjacent cell compares the size of two assessed values, determines the signal strength of serving cell and the signal strength of adjacent cell Between relationship whether meet reselection conditions, when assessed value due to calculating serving cell introduces the hysteresis effect value of RSRP, The deviant of adjacent cell is introduced when calculating the assessed value of adjacent cell, so as to avoid gravity treatment from shaking, only serving cell and When the signal strength difference of adjacent cell is more, cell reselection can occur.

In a kind of possible embodiment, before the cell reselection that terminal initiates from first community to second community, Terminal obtains Q_meas,nAnd Q_meas,s；Wherein, Q_meas,nFor the RSRP of second community, Q_meas,sFor the RSRP of first community；Work as Q_meas,n More than Q_meas,sPlussage be greater than the second preset threshold when, terminal determines the signal strength of first community and the letter of second community Relationship between number intensity meets the first preset condition.According to the embodiment, in the signal strength and neighbour for determining serving cell When whether the relationship between the signal strength of cell meets reselection conditions, the second preset threshold is set according to flexible, so as to More flexible determines whether generation cell reselection.

In a kind of possible embodiment, terminal according to the signal quality of first community lower than preset level it is lasting when Between T be set dynamically the second preset threshold；It is determined in terminal between the signal strength of first community and the signal strength of second community Relationship meet the first preset condition before, the method also includes: when T < preset time, terminal sets the second preset threshold It is set to the first value；When T > preset time, the second preset threshold is set the second value by terminal.According to the embodiment party Formula presets the second preset threshold and the relationship of T, for example, second preset threshold is smaller when T is bigger, that is to say, that clothes The signal quality for cell of being engaged in is longer lower than preset level duration, is more easy to happen cell reselection.

Second aspect, the embodiment of the invention provides a kind of terminal, which may be implemented above-mentioned first aspect method and sets Performed function, the function can also execute corresponding software realization by hardware realization by hardware in meter.Institute It states hardware or software includes one or more modules corresponding with above-mentioned function.

It include processor in the structure of the terminal in a possible design, which is configured as supporting the end End executes corresponding function in above-mentioned first aspect method.The terminal can also include memory, which is used for and processing Device coupling, saves the necessary program instruction of the terminal and data.The terminal can also include communication interface, which uses In sending or receiving information etc..

The third aspect, the embodiment of the invention provides a kind of communication device, which may, for example, be chip, this is logical T unit can be set in terminal, which includes processor and interface.The processor is configured as supporting the communication Device executes corresponding function in above-mentioned first aspect method.The interface for support the communication device and other communication devices or Communication between other network elements.The communication device can also include memory, which saves for coupling with processor The necessary program instruction of the communication device and data.

Fourth aspect is deposited in the computer storage medium the embodiment of the invention provides a kind of computer storage medium Instruction is contained, when run on a computer, so that computer executes any one of above-mentioned first aspect or first aspect Method described in possible design.

5th aspect, the embodiment of the invention provides a kind of computer program products, and it includes instructions, when described program quilt When performed by computer, the instruction is so that computer executes any one possible design of above-mentioned first aspect or first aspect Described in method.

6th aspect, the embodiment of the invention provides a kind of computer programs, and it includes instructions, when described program is calculated When performed by machine, the instruction is so that computer executes institute in any one possible design of above-mentioned first aspect or first aspect The method stated.

The iso-frequency adjacent community of the embodiment of the present invention, co-frequency neighbor cell for serving cell or All factors being equal, preference will be give to grade, not only Relationship between the signal strength of serving cell and the signal strength of adjacent cell is met into preset condition as the one of cell reselection Item reselection conditions, and the signal quality of cell is lower than preset level as another reselection conditions, when this two gravity treatment items When part all meets, cell reselection is initiated immediately, thus promote terminal when serving cell signal quality is poor, it being capable of rapid reselection To other adjacent cells, to increase call successful rate and reduce service delay, the user experience is improved.A kind of possible In embodiment, whether the relationship between the signal strength of the signal strength and adjacent cell that determine serving cell meets gravity treatment item When part, according to the second preset threshold of flexible setting, generation cell reselection is determined whether so as to more flexible.In a kind of possibility Embodiment in, preset the second preset threshold and the relationship of T, for example, second preset threshold is smaller when T is bigger, That is the signal quality of serving cell is longer lower than preset level duration, it is more easy to happen cell reselection.

Detailed description of the invention

Fig. 1 is a typical application scenarios schematic diagram provided in an embodiment of the present invention；

Fig. 2 is a kind of flow chart of residence reselecting provided in an embodiment of the present invention；

Fig. 3 is a kind of communication scheme of residence reselecting provided in an embodiment of the present invention；

Fig. 4 is the flow chart of another residence reselecting provided in an embodiment of the present invention；

Fig. 5 is a kind of terminal structure figure provided in an embodiment of the present invention；

Fig. 6 is another terminal structure figure provided in an embodiment of the present invention；

Fig. 7 is a kind of communication apparatus structure figure provided by the embodiments of the present application.

Specific embodiment

The invention relates to network element include base station and terminal.Base station is that terminal is wirelessly linked into movement It is mobile logical to can be the network equipment, evolved base station (evolved NodeB, eNodeB), 5G for access device in communication system Base station in base station, future mobile communication system or Wireless Fidelity (Wireless Fidelity, WiFi) system in letter system In access node etc., embodiments herein does not limit particular technique used by the network equipment and specific equipment form It is fixed.Generally a base station corresponds to one or more cell, and each cell is a piece of overlay area centered on base station, It is identified by cell ID (cellId)；Certain macro base station coverage area is larger, can be subdivided into several cells.

Terminal is referred to as user equipment (user equipment, UE), terminal device (Terminal Equipment, TE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), 5G user set It is standby etc..Terminal device can be mobile phone (mobile phone), tablet computer (Pad), the computer with radio transmission-receiving function, virtual Real (Virtual Reality, VR) terminal device, augmented reality (Augmented Reality, AR) terminal device, industry Control the wireless terminal in (industrial control), the wireless terminal in unmanned (self-driving), long-range Wireless terminal in operation (remote medical surgery), the wireless terminal in smart grid (smart grid), fortune Wireless terminal, the wireless terminal in smart city (smart city), intelligence in defeated safety (transportation safety) Wireless terminal etc. in intelligent family (smart home), the application does not limit this.

Fig. 1 is a typical application scenarios schematic diagram provided in an embodiment of the present invention, and referring to Fig.1, cell 1 is worked as terminal Preceding resident cell, the i.e. serving cell of terminal, cell 2 to 7 are the adjacent cell of cell 1, wherein white indicates that reference signal connects Receive power (Reference Signal Receiving Power, RSRP) or Reference Signal Received Quality (Reference Signal Receiving Quality, RSRQ) preferably, Dark grey indicate RSRP or RSRQ it is poor, as seen from Figure 1, cell 1 to 7 RSRP is preferable, and the RSRQ of cell 2,3,5,6 is preferable, and the RSRQ of cell 1,4,7 is poor.It is assumed that cell 4 and 7 is the height of cell 1 The iso-frequency adjacent community of priority, cell 2 and 3 are the iso-frequency adjacent community of All factors being equal, preference will be give to the grade of cell 1, and cell 5 and 6 is cell 1 The iso-frequency adjacent community of low priority.Current network due to arranging net and optimizing, the signal quality (such as RSRQ) of cell 1 compared with Difference, but the signal energy difference very little of its signal energy (such as RSRP) and adjacent cell, and the iso-frequency adjacent community of high priority It is unsatisfactory for reselection conditions.Typically for the assessment of co-frequency neighbor cell or the iso-frequency adjacent community of isopreference level, have ignored to service The assessment of the signal quality of cell, when terminal resides in such cell (such as cell 1), in fact it could happen that long-time cell reselection Unsuccessful, the calling and called success rate so as to cause terminal is low or the service delay of terminal is long, and user experience is bad.

In the embodiment of the present invention, for serving cell adjacent cell be the serving cell co-frequency neighbor cell or the clothes The case where iso-frequency adjacent community of cell of being engaged in All factors being equal, preference will be give to grade, one using the signal quality of serving cell as cell reselection is commented Estimate condition, when the signal quality of serving cell is poor, terminal relaxes the requirement to the signal energy of adjacent cell, namely relaxes pair The requirement of the signal strength of adjacent cell promotees to enable the terminals to co-frequency neighbor cell or serving cell of the rapid reselection to serving cell The iso-frequency adjacent community for grade that All factors being equal, preference will be give to improves user experience to increase call successful rate and reduce service delay.

Fig. 2 is a kind of flow chart of residence reselecting provided in an embodiment of the present invention, and this method can be, but not limited to use In application scenarios shown in FIG. 1, the executing subject of this method is terminal, this method comprises:

Step 201, terminal resides in first community.

Wherein, when terminal resides in serving cell (i.e. first community), terminal can periodically obtain serving cell RSRP measured value or serving cell signal quality (for example, Signal to Interference plus Noise Ratio (Signal to Interference plus Noise Ratio, SINR) or measured value RSRQ), terminal can pass through physical layer (Layer Physical, LPHY) RSRP and signal quality of serving cell are measured.Terminal can preset serving cell The RSRP threshold value of RSRP or preset serving cell signal quality RSRQ threshold value, when the measured value and threshold value of serving cell Relationship when meeting predetermined condition, terminal starts the measurement to adjacent cell, for example, the measurement of RSRP and RSRQ to adjacent cell. The predetermined condition can determines according to actual conditions, for example, the RSRP of serving cell is less than RSRP threshold value or serving cell RSRQ be less than RSRQ threshold value.Wherein, terminal can obtain serving cell by measurement using any one existing mode The measured value of the SINR of the measured value or serving cell of the RSRQ of the measured value or serving cell of RSRP, above-mentioned threshold value can be by wireless Resource Control Layer (Layer Radio Resource Control, LRRC) setting, this will not be repeated here.It is understood that Terminal can preset measurement period, for example, set measurement period as 50ms or 100ms etc., the application to this with no restriction.

Step 202, when the signal quality of first community is lower than preset level and the signal strength and second of first community When relationship between the signal strength of cell meets the first preset condition, terminal initiates the cell from first community to second community Gravity treatment；Wherein, second community is the co-frequency neighbor cell of first community or the iso-frequency adjacent community of All factors being equal, preference will be give to grade.

In the embodiment of the present invention, for the alien frequencies of co-frequency neighbor cell or All factors being equal, preference will be give to grade that second community is first community The scene of adjacent cell, by the signal quality of first community lower than preset level and the signal strength and second community of first community Signal strength between relationship meet a kind of reselection conditions of first preset condition as cell reselection.

On the one hand, terminal determines whether the signal quality of first community is lower than preset level.

In one example, the signal quality of first community includes SINR or RSRQ, and terminal obtains the SINR of first community (i.e. the measured value of SINR) or RSRQ (i.e. the measured value of RSRQ)；When the SINR or RSRQ of first community are less than the first preset threshold When, terminal determines the signal quality of first community lower than preset level.According to this, embodiment there is provided two kinds of measurement cells to believe The mode of number quality good or not.It should be noted that the first preset threshold can determines according to actual conditions, for example, above-mentioned first Preset threshold can be set as 0, -1, -3, -5, -7 etc. or 0,1,3,5,7 etc., the application to this with no restriction.

On the other hand, whether terminal determines the relationship between the signal strength of first community and the signal strength of second community Meet the first preset condition.

In one example, terminal calculates the assessed value R of first community_s, the assessed value R of first community_s=Q_meas,s+ Q_Hyst-Q_{offset temp}；Wherein, Q_meas,sFor the RSRP of first community, Q_HystFor the hysteresis effect of the RSRP of the first community Value, Q_{offset temp}For the temporary bias value of first community；The assessed value R of terminal calculating second community_n, the assessed value of second community R_n=Q_meas,n-Q_offset-Q_{offset temp}；Wherein, Q_meas,nFor the RSRP of second community, Q_offsetFor the deviant of second community, Q_{offset temp}For the temporary bias value of second community；Work as R_nGreater than R_sWhen, terminal determines the signal strength and second of first community Relationship between the signal strength of cell meets the first preset condition.It should be noted that the R in the first preset condition_n>R_sAnd The definition of its each relevant parameter can determine that the embodiment of the present invention contains relevant parameter and parameter according to 3GPP standard TS36.304 Justice is not changed.Compare two by calculating the assessed value of serving cell and the assessed value of adjacent cell according to the embodiment and comment The size of valuation, determines whether the relationship between the signal strength of serving cell and the signal strength of adjacent cell meets gravity treatment item Part, when assessed value due to calculating serving cell, introduce the hysteresis effect value of RSRP, introducing when calculating the assessed value of adjacent cell The deviant of adjacent cell, so as to avoid gravity treatment from shaking, the signal strength difference of only serving cell and adjacent cell is more When, cell reselection can occur.

In another example, terminal obtains Q_meas,nAnd Q_meas,s；Wherein, Q_meas,nFor the RSRP of second community, Q_meas,s For the RSRP of first community；Work as Q_meas,nMore than Q_meas,sPlussage be greater than the second preset threshold when, that is, work as Q_meas,n>Q_meas,s+ Second preset threshold, terminal determine that the relationship between the signal strength of first community and the signal strength of second community meets first Preset condition.Relationship according to the embodiment, between the signal strength of the signal strength and adjacent cell that determine serving cell It, can be pre- lower than preset level duration setting second according to the signal quality of serving cell when whether meeting reselection conditions If threshold value, can be more flexible determine whether occur cell reselection.For example, the second preset threshold can be offset (T), In, T is that the signal quality of first community is lower than preset level duration；That is Offset is with T dynamic change, as T < default Between when, terminal obtain offset (T)=value 1 (also referred to as the first value)；When T > preset time, terminal obtains offset (T)=value 2 (also referred to as the second value)；Wherein, 2 value1 > value.Work as Q_meas,n>Q_meas,sIt is described when+offset (T) Terminal determines that the relationship between the signal strength of the serving cell and the signal strength of the co-frequency neighbor cell meets described One preset condition；Wherein, T is that the signal quality of the serving cell is lower than preset level duration.According to the embodiment party Formula presets the relationship of offset (T) and T, and when T is bigger, offset (T) is smaller, that is to say, that the signal of serving cell Quality is longer lower than preset level duration, is more easy to happen cell reselection.It should be noted that when described default Between, the first value and the second value can determines according to actual conditions, the application to this with no restriction.

Wherein, offset (T) may be considered the deviant an of dynamic change at any time, can divide the time in advance Section, each period have a deviant, and there are many modes for dividing the period, for example, two periods are only divided into, when When T < preset time, offset (T)=value 1；When T > preset time, offset (T)=value 2；Wherein, value1>value 2.Optionally, above-mentioned preset time is 2s, 3s or 5s, and above-mentioned value 1 is 3,4 or 5, above-mentioned value 2 It is 0,1 or 2.For another example dividing three periods, when T < first preset time, offset (T)=value 1；When second pre- If when time > T > first preset time, offset (T)=value 2；When T > second preset time, offset (T)=value 3 (also referred to as third value).Wherein, 2 > value3 of value1 > value.To division in the embodiment of the present invention Period number is not specifically limited.

The iso-frequency adjacent community of the embodiment of the present invention, co-frequency neighbor cell for serving cell or All factors being equal, preference will be give to grade, not only Relationship between the signal strength of serving cell and the signal strength of adjacent cell is met into preset condition as the one of cell reselection Item reselection conditions, and the signal quality of cell is lower than preset level as another reselection conditions, when this two gravity treatment items When part all meets, cell reselection is initiated immediately, thus promote terminal when serving cell signal quality is poor, it being capable of rapid reselection To other adjacent cells, to increase call successful rate and reduce service delay, the user experience is improved.

Fig. 3 be a kind of communication scheme of residence reselecting provided in an embodiment of the present invention, this method can with but it is unlimited In being used for application scenarios shown in FIG. 1, the executing subject of the method is terminal, for describing physical layer (Layer Physical, LPHY) with the interactive process of radio resource control layer (Layer Radio Resource Control, LRRC), This method comprises:

Step 301, the LPHY of terminal starts the measurement to adjacent cell according to the measured value of serving cell.

Step 302, for the LPHY of terminal to the LRRC report measurement results of terminal, measurement result includes current service cell RSRP, the signal quality of current service cell, the RSRP of adjacent cell, adjacent cell signal quality in it is one or more.

Step 303, the LRRC of terminal carries out reselection evaluation according to co-frequency neighbor cell of the measurement result to serving cell.

Step 304, the LRRC of terminal carries out gravity treatment according to high priority iso-frequency adjacent community of the measurement result to serving cell Assessment.

Step 305, the LRRC of terminal carries out gravity treatment according to isopreference level iso-frequency adjacent community of the measurement result to serving cell Assessment.

Step 306, the LRRC of terminal carries out gravity treatment according to low priority iso-frequency adjacent community of the measurement result to serving cell Assessment.

Step 307, when reselection conditions meet, the LRRC of terminal sends request message to the LPHY of terminal, which disappears Include the cell ID of Target cell in breath, triggers the gravity treatment to the Target cell for requesting.

Step 308, the LPHY of terminal sends response message to the LRRC of terminal, includes Target cell in the response message Configuration information.

Step 309, the LRRC of terminal assesses whether Target cell meets resident condition according to the configuration information of Target cell, The signal quality of Target cell is assessed simultaneously.

Step 310, the LRRC of terminal sends a notification message to the LPHY of terminal, and the notification message is for notifying that terminal is resident To Target cell.

The embodiment of the present invention is not only small by the signal strength of serving cell and neighbour for the co-frequency neighbor cell of serving cell Relationship between the signal strength in area meets a reselection conditions of the preset condition as cell reselection, and by the signal of cell Quality initiates cell reselection when this two reselection conditions all meet as another reselection conditions lower than preset level immediately, To promote serving cell signal quality poor when, can rapid reselection to other adjacent cells, to increase call successful rate And reduce service delay, the user experience is improved.

It elaborates below to above-mentioned steps:

In step 301, when terminal resides in serving cell (i.e. first community), the LPHY of terminal can be periodically Obtain the measured value of the measured value of the RSRP of serving cell or the signal quality (for example, SINR or RSRQ) of serving cell, terminal It can be measured by RSRP and signal quality of the LPHY to serving cell.Terminal can preset the RSRP of serving cell Threshold value or preset serving cell signal quality threshold value, when the measured value of serving cell and the relationship of threshold value meet it is pre- When fixed condition, terminal starts the measurement to adjacent cell, for example, the measurement of RSRP and RSRQ to adjacent cell.The predetermined condition It can determines according to actual conditions, for example, the RSRP of serving cell is less than RSRP threshold value or the RSRQ of serving cell is less than RSRQ threshold value.Wherein, terminal can obtain the measurement of the RSRP of serving cell using any one existing mode by measurement The measured value of the SINR of the measured value or serving cell of the RSRQ of value or serving cell, above-mentioned threshold value can be set by LRRC, herein It does not repeat them here.It is understood that terminal can preset measurement period, for example, setting measurement period as 50ms or 100ms Deng, the application to this with no restriction.

In one example, if the measured value of the RSRP of current service cell is lower than the threshold value of preset RSRP, Terminal starts the measurement of the RSRP and RSRQ of adjacent cell.

In another example, if the measured value of the RSRQ of current service cell is lower than the threshold value of preset RSRQ When, terminal starts the measurement of the RSRP and RSRQ of adjacent cell.

It is understood that above-mentioned adjacent cell includes all co-frequency neighbor cells and iso-frequency adjacent community of current service cell.

In step 302, it is to be understood that serving cell can only have an adjacent cell, can also have multiple neighbours small Area.In one example, when serving cell only has an adjacent cell, above-mentioned measurement result include the adjacent cell RSRP and/ Or the RSRQ of the adjacent cell；When serving cell has multiple adjacent cells, above-mentioned measurement result include multiple adjacent cells at least The RSRQ of at least one adjacent cell in the RSRP of one adjacent cell and/or multiple adjacent cells.

It optionally, can also include the type of adjacent cell in above-mentioned measurement result, the type of the adjacent cell is for identifying Relationship between the service frequency of serving cell and the service frequency of adjacent cell, for example, the type of the adjacent cell is for identifying neighbour Cell is the co-frequency neighbor cell or iso-frequency adjacent community of serving cell.Further, when adjacent cell is iso-frequency adjacent community, such Type can be used for the relationship between the priority of mark serving cell and the priority of iso-frequency adjacent community, for example, the adjacent cell Type can be used for identifying the priority of iso-frequency adjacent community and be higher than the priority of serving cell, the iso-frequency adjacent community can be at this time Referred to as high priority iso-frequency adjacent community；Alternatively, the type of the adjacent cell can be used for identifying the priority etc. of iso-frequency adjacent community In the priority of serving cell, the iso-frequency adjacent community can be referred to as isopreference level iso-frequency adjacent community at this time；Alternatively, the adjacent cell Type can be used for identifying the priority of iso-frequency adjacent community and be lower than the priority of serving cell, the iso-frequency adjacent community can be at this time Referred to as low priority iso-frequency adjacent community.

In step 303, it is to be understood that reselection evaluation is to be determined for compliance with the co-frequency neighbor cell of reselection conditions, also It is to say, the LRRC of terminal determines whether co-frequency neighbor cell meets reselection conditions according to measurement result, so that it is determined that meeting gravity treatment item The co-frequency neighbor cell of part.

In one example, above-mentioned reselection conditions include: the signal quality of serving cell lower than preset level and described Relationship between the signal strength of serving cell and the signal strength of co-frequency neighbor cell meets the first preset condition.It is a kind of possible Scene are as follows: terminal resides in serving cell, when the serving cell signal quality lower than preset level and it is described service it is small When relationship between the signal strength in area and the signal strength of co-frequency neighbor cell meets the first preset condition, the terminal initiate from Cell reselection of the serving cell to the co-frequency neighbor cell.

On the one hand, terminal determines whether the signal quality of serving cell is lower than preset level.

In a kind of possible embodiment, the signal quality of serving cell includes SINR or RSRQ, and terminal obtains service The SINR or RSRQ of cell；When the SINR of serving cell or RSRQ is less than the first preset threshold, terminal determines serving cell Signal quality is lower than preset level.According to this, embodiment there is provided the modes that two kinds are measured cell signal quality superiority and inferiority.It needs Illustrate, the first preset threshold can determines according to actual conditions, for example, above-mentioned first preset threshold can be set as 0 ,- 1, -3, -5, -7 etc. or 0,1,3,5,7 etc., the application to this with no restriction.

On the other hand, terminal determines whether the relationship between the signal strength of serving cell and the signal strength of adjacent cell is full The first preset condition of foot.

In one example, terminal calculates the assessed value R of serving cell_s, the assessed value R of serving cell_s=Q_meas,s+ Q_Hyst-Q_{offset temp}；Wherein, Q_meas,sFor the RSRP of serving cell, Q_HystFor the hysteresis effect of the RSRP of the serving cell Value, Q_{offset temp}For the temporary bias value of the serving cell；The terminal calculates the assessed value R of the co-frequency neighbor cell_n, institute State the assessed value R of co-frequency neighbor cell_n=Q_meas,n-Q_offset-Q_{offset temp}；Wherein, Q_meas,nFor the co-frequency neighbor cell RSRP, Q_offsetFor the deviant of the co-frequency neighbor cell, Q_{offset temp}For the temporary bias value of the co-frequency neighbor cell；Work as R_n Greater than R_sWhen, the terminal determines the pass between the signal strength of the serving cell and the signal strength of the co-frequency neighbor cell System meets first preset condition.It should be noted that the R in the first preset condition_n>R_sAnd its definition of each relevant parameter It can be determined according to 3GPP standard TS36.304, the embodiment of the present invention does not change relevant parameter and meaning of parameters.According to this Embodiment compares the size of two assessed values, determines clothes by calculating the assessed value of serving cell and the assessed value of adjacent cell Whether the relationship between the signal strength for cell of being engaged in and the signal strength of adjacent cell meets reselection conditions, due to calculating serving cell Assessed value when introduce the hysteresis effect value of RSRP, the deviant of adjacent cell is introduced when calculating the assessed value of adjacent cell, from And can be avoided gravity treatment concussion, when the signal strength difference of only serving cell and adjacent cell is more, cell weight can occur Choosing.

In another example, terminal obtains Q_meas,nAnd Q_meas,s；Wherein, Q_meas,nFor the RSRP of the co-frequency neighbor cell, Q_meas,sFor the RSRP of the serving cell；Work as Q_meas,nMore than Q_meas,sPlussage be greater than the second preset threshold when, that is, work as Q_meas,n>Q_meas,s+ the second preset threshold, terminal determine between the signal strength of serving cell and the signal strength of co-frequency neighbor cell Relationship meet the first preset condition.According to the embodiment, in the signal of the signal strength and adjacent cell that determine serving cell It, can be lasting lower than preset level according to the signal quality of serving cell when whether the relationship between intensity meets reselection conditions Time set the second preset threshold, can be more flexible determine whether occur cell reselection.For example, the second preset threshold can be Offset (T), wherein T is that the signal quality of first community is lower than preset level duration；That is Offset becomes with T dynamic Change, when T < preset time, terminal obtains offset (T)=value 1 (also referred to as the first value)；When T > preset time, eventually End obtains offset (T)=value 2 (also referred to as the second value)；Wherein, 2 value1 > value.Work as Q_meas,n>Q_meas,s+ When offset (T), the terminal is determined between the signal strength of the serving cell and the signal strength of the co-frequency neighbor cell Relationship meet first preset condition；Wherein, T be the serving cell signal quality lower than preset level it is lasting when Between.According to the embodiment, the relationship of offset (T) and T is preset, when T is bigger, offset (T) is smaller, that is, It says, the signal quality of serving cell is longer lower than preset level duration, is more easy to happen cell reselection.It needs to illustrate , the preset time, value 1 and value 2 can determines according to actual conditions, the application to this with no restriction.Its In, offset (T) may be considered the deviant an of dynamic change at any time, can divide period, each time in advance Section has a deviant, and there are many modes for dividing the period, for example, two periods are only divided into, when T < preset time When, offset (T)=value 1；When T > preset time, offset (T)=value 2；Wherein, value1 > value 2.Optionally, above-mentioned preset time is 2s, 3s or 5s, and above-mentioned value 1 is 3,4 or 5, and above-mentioned value 2 is 0,1 or 2.Example again Such as, three periods are divided, when T < first preset time, offset (T)=value 1；As the second preset time > T > described When the first preset time, offset (T)=value 2；When T > second preset time, offset (T)=value 3 (also referred to as third value) wherein, 2 > value3 of value1 > value.The period number of division is not done in the embodiment of the present invention It is specific to limit.

In another example, above-mentioned reselection conditions further include: the signal quality of serving cell be higher than preset level and Relationship between the signal strength of the serving cell and the signal strength of co-frequency neighbor cell is in first time length (when assessing Between threshold value) in be all satisfied the second preset condition.A kind of possible scene are as follows: terminal resides in serving cell, when the service is small The signal quality in area is higher than between preset level and the signal strength of the serving cell and the signal strength of co-frequency neighbor cell Relationship when being all satisfied the second preset condition in first time length, the terminal initiates from the serving cell to described same The cell reselection of frequency adjacent district.

On the one hand, terminal determines whether the signal quality of serving cell is higher than preset level.Wherein, terminal determines that service is small The signal quality in area is higher than the method for preset level and terminal determines that the signal quality of serving cell is lower than the method for preset level Similar, this will not be repeated here.

On the other hand, terminal determines that the relationship between the signal strength of serving cell and the signal strength of co-frequency neighbor cell is The second preset condition of no satisfaction.Wherein, the second preset condition can be identical as the first preset condition, for example, being calculated using terminal The mode of assessed value, i.e., common R criterion, but it's not limited to that for the embodiment of the present invention.

In step 304, it is to be understood that the high priority alien frequencies neighbour that reselection evaluation is determined for compliance with reselection conditions is small Area, that is to say, that the LRRC of terminal determines whether high priority iso-frequency adjacent community meets reselection conditions according to measurement result, thus It is determined for compliance with the high priority iso-frequency adjacent community of reselection conditions.

In one example, the signal energy and signal quality of high priority iso-frequency adjacent community are assessed, meets weight Gravity treatment is triggered when selecting condition.

Above-mentioned reselection conditions include: that adjacent cell RSRP is greater than default RSRP threshold value or adjacent cell RSRQ greater than default RSRQ threshold Value；And the reselection evaluation time is greater than or equal to assessment time threshold.Wherein, the default RSRP threshold value and default RSRQ threshold The numerical value of value can determines according to actual conditions, and the application is with no restriction.

That is, high priority iso-frequency adjacent community persistently meets adjacent cell RSRP greater than default in assessment time threshold RSRP threshold value or adjacent cell RSRQ are greater than default RSRQ threshold value, just mean that high priority iso-frequency adjacent community meets reselection conditions.

In step 305, it is to be understood that the isopreference level alien frequencies neighbour that reselection evaluation is determined for compliance with reselection conditions is small Area (i.e. the iso-frequency adjacent community of serving cell All factors being equal, preference will be give to grade), that is to say, that the LRRC of terminal is determined etc. according to measurement result Whether priority iso-frequency adjacent community meets reselection conditions, so that it is determined that meeting the isopreference level iso-frequency adjacent community of reselection conditions.

In one example, above-mentioned reselection conditions include: the signal quality of serving cell lower than preset level and described Relationship between the signal strength of serving cell and the signal strength of isopreference level iso-frequency adjacent community meets the first preset condition.One The possible scene of kind are as follows: terminal resides in serving cell, when the signal quality of the serving cell is lower than preset level and institute The relationship stated between the signal strength of serving cell and the signal strength of isopreference level iso-frequency adjacent community meets the first preset condition When, the terminal is initiated from the serving cell to the cell reselection of the isopreference level iso-frequency adjacent community.

On the one hand, terminal determines whether the signal quality of serving cell is lower than preset level.Wherein, terminal determines that service is small The signal quality in area before the method for preset level lower than having been described, and this will not be repeated here.

On the other hand, terminal determines between the signal strength of serving cell and the signal strength of isopreference level iso-frequency adjacent community Relationship whether meet the first preset condition.Wherein, terminal determines that the signal strength of serving cell and isopreference level alien frequencies neighbour are small Relationship between the signal strength in area meets reselection conditions, can be using the signal strength for determining serving cell with terminal and with frequency Relationship between the signal strength of adjacent cell meets the identical method of reselection conditions, and this will not be repeated here.

The embodiment of the present invention is not only strong by the signal of serving cell for the isopreference level iso-frequency adjacent community of serving cell Relationship between degree and the signal strength of adjacent cell meets a reselection conditions of the preset condition as cell reselection, and will be small The signal quality in area is initiated as another reselection conditions when this two reselection conditions all meet immediately lower than preset level Cell reselection, thus when promoting serving cell signal quality poor, can rapid reselection to other adjacent cells, exhaled to increase It is success rate and reduces service delay, the user experience is improved.

In another example, above-mentioned reselection conditions further include: the signal quality of serving cell be higher than preset level and Relationship between the signal strength of the serving cell and the signal strength of isopreference level iso-frequency adjacent community is in first time length The second preset condition is all satisfied in (i.e. assessment time threshold).A kind of possible scene are as follows: terminal resides in serving cell, works as institute The signal quality for stating serving cell is small higher than the signal strength and isopreference level alien frequencies neighbour of preset level and the serving cell When relationship between the signal strength in area is all satisfied the second preset condition in first time length, the terminal is initiated from described Cell reselection of the serving cell to the isopreference level iso-frequency adjacent community.

On the one hand, terminal determines whether the signal quality of serving cell is higher than preset level.Wherein, terminal determines that service is small The signal quality in area is higher than the method for preset level and terminal determines that the signal quality of serving cell is lower than the method for preset level Similar, this will not be repeated here.

On the other hand, terminal determines between the signal strength of serving cell and the signal strength of isopreference level iso-frequency adjacent community Relationship whether meet the second preset condition.Wherein, the second preset condition can be identical as the first preset condition, for example, using Terminal calculates the mode of assessed value, i.e., common R criterion, but it's not limited to that for the embodiment of the present invention.

The embodiment of the present invention is not only strong by the signal of serving cell for the isopreference level iso-frequency adjacent community of serving cell Relationship between degree and the signal strength of adjacent cell meets one of preset condition as cell reselection in certain time length Reselection conditions, and the signal quality of cell is higher than preset level as another reselection conditions, when this two reselection conditions When all meeting, cell reselection is initiated, to can at least after a certain time could when promoting serving cell signal quality preferable Gravity treatment is to other adjacent cells, to reduce gravity treatment concussion.It should be noted that whether the present invention judges two conditions to terminal The sequencing of satisfaction is without limitation

Within step 306, it is to be understood that the low priority alien frequencies neighbour that reselection evaluation is determined for compliance with reselection conditions is small Area, that is to say, that the LRRC of terminal determines whether low priority iso-frequency adjacent community meets reselection conditions according to measurement result, thus It is determined for compliance with the low priority iso-frequency adjacent community of reselection conditions.

In one example, terminal assesses the signal energy and signal quality of serving cell, and to low preferential The signal energy and signal quality of grade iso-frequency adjacent community are assessed, and trigger gravity treatment when meeting reselection conditions.

Above-mentioned reselection conditions include: that serving cell RSRP is less than default RSRP threshold value or serving cell RSRQ less than default RSRQ threshold value；And adjacent cell RSRP is greater than default RSRP threshold value or adjacent cell RSRQ is greater than default RSRQ threshold value；And weight The choosing assessment time is greater than or equal to assessment time threshold.

It is less than in advance that is, low priority iso-frequency adjacent community persistently meets serving cell RSRP in assessment time threshold If RSRP threshold value or serving cell RSRQ are less than default RSRQ threshold value；And adjacent cell RSRP is greater than default RSRP threshold value or neighbour Cell RSRQ is greater than default RSRQ threshold value, just means that low priority iso-frequency adjacent community meets reselection conditions.

It is understood that step 303 is determined to meet gravity treatment to the process that 306 be that sequence executes when the step of front The cell of condition, behind the step of just do not execute, only when the step of front failing to determine to meet the cell of reselection conditions, The step of below, just executes.

It in one example, can be by signal quality when filtering out multiple cells for meeting reselection conditions in a step Best adjacent cell initiates cell reselection as Target cell, or initiates the best adjacent cell of signal strength as Target cell Cell reselection, or comprehensive score is determined according to signal strength and signal quality, using the highest adjacent cell of comprehensive score as target Cell initiates cell reselection, and the embodiment of the present invention is not construed as limiting this.

In step 307, Target cell may meet reselection conditions to what either step in 306 was determined for step 303 Adjacent cell.

For example, when step 303 determines the co-frequency neighbor cell for meeting reselection conditions, then using the co-frequency neighbor cell as mesh Cell is marked, no longer execution step 304 to 306.

In another example thening follow the steps 304 when step 303 is not determined by the co-frequency neighbor cell for meeting reselection conditions, work as step Rapid 304 when determining the high priority iso-frequency adjacent community for meeting reselection conditions, using the high priority iso-frequency adjacent community as target Cell, no longer execution step 305 and 306.

In another example thening follow the steps 304 when step 303 is not determined by the co-frequency neighbor cell for meeting reselection conditions, work as step Rapid 304 when being not determined by the high priority iso-frequency adjacent community for meeting reselection conditions, 305 is thened follow the steps, when step 305 is determined When meeting the isopreference level iso-frequency adjacent community of reselection conditions, using the isopreference level iso-frequency adjacent community as Target cell, no longer hold Row step 306.

In another example thening follow the steps 304 when step 303 is not determined by the co-frequency neighbor cell for meeting reselection conditions, work as step Rapid 304 when being not determined by the high priority iso-frequency adjacent community for meeting reselection conditions, 305 is thened follow the steps, when step 305 does not determine When meeting the isopreference level iso-frequency adjacent community of reselection conditions out, 306 are thened follow the steps, when step 306 is determined to meet gravity treatment item When the low priority iso-frequency adjacent community of part, using the low priority iso-frequency adjacent community as Target cell.

In another example when step 303 to 306 is not determined by the adjacent cell for meeting reselection conditions, no Target cell is not held Row subsequent step, jumps to step 303, continues reselection evaluation.

A kind of scene that the embodiment of the present invention is directed to is, when step 303 determines the co-frequency neighbor cell for meeting reselection conditions When, then using the co-frequency neighbor cell as Target cell, no longer execution step 304 to 306.

Another scene that the embodiment of the present invention is directed to is, when step 303 be not determined by meet reselection conditions same frequency it is adjacent When cell, 304 are thened follow the steps, when step 304 is not determined by the high priority iso-frequency adjacent community for meeting reselection conditions, is then held Row step 305, when step 305 determines the isopreference level iso-frequency adjacent community for meeting reselection conditions, by the isopreference level alien frequencies Adjacent cell is as Target cell, no longer execution step 306.

In step 308, the LPHY of terminal is small according to the target for including from the request message that the LRRC of terminal is received The cell ID in area obtains the configuration information of Target cell.

In a step 309, if Target cell is unsatisfactory for resident condition or the signal quality of Target cell is lower than default water Flat, then cell reselection does not trigger, and serving cell retracts, i.e., terminal, which still maintains, resides in serving cell, does not initiate cell reselection. Otherwise terminal initiates gravity treatment, starting protection timer, for example, the duration of timer can be 15s, 30s and 60s, the application couple This is with no restriction.

In the step 310, the embodiment of the invention provides the complete procedures of cell reselection, due to for the same of serving cell The iso-frequency adjacent community reselection conditions usually having the same of frequency adjacent district or the serving cell All factors being equal, preference will be give to grade, therefore below The reselection conditions of step 303 and step 305 are described collectively.

It is small for the co-frequency neighbor cell of the serving cell or the service in order to be easier to understand the adjacent cell of serving cell The reselection conditions of cell reselection when the iso-frequency adjacent community for grade that All factors being equal, preference will be give in area, the embodiment of the present invention give weight shown in table one Select the list of condition.

Table one: reselection conditions list

By table one as it can be seen that (corresponding to the first reselection conditions or second when the signal quality of serving cell is lower than preset level Reselection conditions), for the no requirement (NR) of reselection evaluation time, reduce the time that terminal resides in the cell of poor signal quality, is promoted User experience.(corresponding third reselection conditions), reselection evaluation time when the signal quality of serving cell is higher than preset level Cell reselection can just be occurred by needing to be greater than or equal to assessment time threshold, can be avoided gravity treatment concussion.

It is understood that reselection conditions include the condition of the signal quality of serving cell, the signal strength of serving cell The condition and the condition of reselection evaluation time of relationship between the signal strength of adjacent cell, this several conditions need while meeting It can just be considered as and meet reselection conditions, but the sequencing and without limitation that terms and conditions determines.

Fig. 4 is a kind of method flow diagram of cell reselection provided in an embodiment of the present invention.Referring to Fig. 4, this method comprises:

Step 401, terminal determines that the relationship between the signal strength of serving cell and the signal strength of adjacent cell meets the One preset condition.

Above-mentioned first preset condition can be common R criterion or condition related with dynamic offset value, due to aforementioned It is had been noted above in embodiment, this will not be repeated here.

It is understood that terminal is in the signal strength and adjacent cell for determining serving cell in order to avoid gravity treatment concussion Relationship between signal strength meet after the first preset condition can with opening timing device, the timer when it is a length of preset Assess time threshold.

Terminal repeatedly determines whether to meet the first preset condition in assessment time threshold, if being unsatisfactory for the first default item Part, then Off Timer keeps the open state of timer if meeting the first preset condition.That is, determining for the first time It is that timer is opened that relationship between the signal strength of serving cell and the signal strength of adjacent cell, which meets the first preset condition, Trigger condition, and the timing since at the time of timer is opened, persistently determine the letter of serving cell in assessment time threshold It is the condition that timer is kept it turned on that relationship number between intensity and the signal strength of adjacent cell, which meets the first preset condition, The relationship for determining between the signal strength of serving cell and the signal strength of adjacent cell in assessment time threshold is unsatisfactory for the One preset condition or timing reach the trigger condition that assessment time threshold is Off Timer.

Step 402, terminal determines the signal quality of serving cell lower than preset level.

If opening timer after step 401, terminal determines the signal quality of serving cell lower than pre- in step 402 It, at this time can be with Off Timer, that is to say, that terminal determines serving cell if after level, needing triggering cell gravity treatment immediately Signal quality is lower than another trigger condition that preset level is Off Timer.

It is understood that the embodiment of the present invention for step 401 and step 402 execution sequence without limitation, can be with It first carries out step 401 and executes step 402 again, step 402 can also be first carried out and execute step 401 again.When first carrying out step 402 again When executing step 401, the signal quality since serving cell has first been determined needs triggering cell weight immediately lower than preset level Choosing, therefore opening timing device is not necessarily to after step 401.

Step 403, terminal initiates cell reselection for the adjacent cell.

The example is that an example of cell reselection is initiated for adjacent cell when meeting the first reselection conditions in table one. The iso-frequency adjacent community of the embodiment of the present invention, co-frequency neighbor cell for serving cell or All factors being equal, preference will be give to grade, will not only service small Relationship between the signal strength in area and the signal strength of adjacent cell meets a gravity treatment item of the preset condition as cell reselection Part, and the signal quality of cell is lower than preset level as another reselection conditions, when this two reselection conditions all meet When, initiate cell reselection immediately, to promote terminal when serving cell signal quality is poor, can rapid reselection to other neighbours Cell, to increase call successful rate and reduce service delay, the user experience is improved.

When meeting the second reselection conditions or third reselection conditions in table one, the stream of cell reselection is initiated for adjacent cell Journey is similar with Fig. 4, and this will not be repeated here.

It is above-mentioned to be mainly described from scheme of the angle of method flow to the embodiment of the present invention.It is understood that In order to realize the above functions, it comprises execute the corresponding hardware configuration of each function and/or soft for each network element, such as terminal etc. Part module.Those skilled in the art should be readily appreciated that, described in conjunction with the examples disclosed in the embodiments of the present disclosure Unit and algorithm steps, the present invention can be realized with the combining form of hardware or hardware and computer software.Some function is studied carefully Unexpectedly it is executed in a manner of hardware or computer software driving hardware, the specific application and design constraint depending on technical solution Condition.Professional technician can use different methods to achieve the described function each specific application, but this Kind is realized and be should not be considered as beyond the scope of the present invention.

The embodiment of the present invention can carry out the division of functional module according to above method example to terminal etc., for example, can be with Two or more functions, can also be integrated in a processing module by corresponding each each functional module of function division In.Above-mentioned integrated module both can take the form of hardware realization, can also be realized in the form of software function module.It needs It is noted that be schematical, only a kind of logical function partition to the division of module in the embodiment of the present invention, it is practical real It is current that there may be another division manner.

Using integrated module, Fig. 5 shows a kind of possibility of terminal involved in above-described embodiment Structural schematic diagram.Terminal 500 includes: processing module 502 and communication module 503.Processing module 502 is for the movement to terminal Control management is carried out, for example, processing module 502 is used to that terminal to be supported to execute process of the Fig. 2 into Fig. 4, and/or is used for this paper institute Other processes of the technology of description.Communication module 503 is used to supporting the communication of terminal Yu other network entities, for example, with base station it Between communication.Terminal can also include memory module 501, for storing the program code and data of terminal.

Processing module 502, for residing in first community by the communication module 503；When the signal matter of first community Amount meets first in advance lower than the relationship between preset level and the signal strength of first community and the signal strength of second community If when condition, terminal initiates the cell reselection from first community to second community；Wherein, second community is the same frequency of first community The iso-frequency adjacent community of adjacent cell or All factors being equal, preference will be give to grade.

In one example, the signal quality of first community includes SINR or RSRQ, processing module 502 for initiate from For first community to before the cell reselection of second community, the SINR or first that processing module 502 is also used to obtain first community is small The RSRQ in area；When the SINR of first community or the RSRQ of first community are less than the first preset threshold, the letter of first community is determined Number quality is lower than preset level.

In one example, processing module 502 is for before initiating the cell reselection from first community to second community, Processing module 502 is also used to calculate the assessed value R of first community_s, the assessed value R of first community_s=Q_meas,s+Q_Hyst- Q_{offset temp}；Wherein, Q_meas,sFor the RSRP of first community, Q_HystFor the hysteresis effect value of the RSRP of first community, Q_{offset temp} For the temporary bias value of first community；The assessed value R of terminal calculating second community_n, the assessed value R of second community_n=Q_meas,n- Q_offset-Q_{offset temp}；Wherein, Q_meas,nFor the RSRP of second community, Q_offsetFor the deviant of second community, Q_{offset temp}For The temporary bias value of second community；Work as R_nGreater than R_sWhen, terminal determine first community signal strength and second community signal it is strong Relationship between degree meets the first preset condition.

In one example, the processing module 502 is small from the first community to described second for the initiation Before the cell reselection in area, the processing module 502 is also used to:

Obtain Q_meas,nAnd Q_meas,s；Wherein, Q_meas,nFor the RSRP of second community, Q_meas,sFor the RSRP of first community；When Q_meas,nMore than Q_meas,sPlussage be greater than the second preset threshold when, terminal determines the signal strength and second community of first community Signal strength between relationship meet the first preset condition.

In one example, the processing module 502 is also used to according to the signal quality of the first community lower than default Second preset threshold is set dynamically in time T of persistent levels；

The processing module 502 is strong in the signal for determining the signal strength and the second community of the first community Before relationship between degree meets first preset condition, the processing module 502 is also used to when the T < preset time When, the first value is set by second preset threshold；When the T > preset time, by second preset threshold It is set as the second value.

The embodiment of the present invention, processing module 502 is for the co-frequency neighbor cell of serving cell or the alien frequencies of All factors being equal, preference will be give to grade Relationship between the signal strength of serving cell and the signal strength of adjacent cell is not only met preset condition as small by adjacent cell One reselection conditions of area's gravity treatment, and the signal quality of cell is lower than preset level as another reselection conditions, when this When two reselection conditions all meet, cell reselection is initiated by communication module 503 immediately, to promote serving cell signal quality When poor, can rapid reselection to other adjacent cells, to increase call successful rate and reduce service delay, improve use Family experience.

Wherein, processing module 502 can be processor or controller.Communication module 503 can be communication interface, transmitting-receiving Device, transmission circuit etc., wherein communication interface is to be referred to as, and may include one or more interfaces.Memory module 501, which can be, deposits Reservoir.

Fig. 6 is a kind of terminal structure schematic diagram provided by the embodiments of the present application, and by taking mobile terminal is mobile phone as an example, Fig. 6 shows Out be mobile phone 600 relevant to the embodiment of the present invention part-structure block diagram.With reference to Fig. 6, mobile phone 600 includes: radio frequency (Radio Frequency, RF) circuit 610, memory 620, input unit 630, display screen 640, sensor 650, audio-frequency electric The components such as road 660, WiFi (wireless fidelity, Wireless Fidelity) module 670, processor 680 and power supply 690.This Field technical staff is appreciated that handset structure shown in Fig. 6 does not constitute the restriction to mobile phone, may include than illustrating more More or less component perhaps combines certain components or different component layouts.

It is specifically introduced below with reference to each component parts of the Fig. 6 to mobile phone 600:

RF circuit 610 can be used for receiving and sending messages or communication process in, signal sends and receivees, particularly, by base station After downlink information receives, handled to processor 680；In addition, the data for designing uplink are sent to base station.In general, RF circuit packet Include but be not limited to antenna, at least one amplifier, transceiver, coupler, low-noise amplifier (Low Noise Amplifier, LNA), duplexer etc..In addition, RF circuit 610 can also be communicated with network and other equipment by wireless communication. Any communication standard or agreement, including but not limited to global system for mobile communications (Global can be used in the wireless communication System for Mobile Communications, GSM), general packet radio service (General Packet Radio Service, GPRS), CDMA (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, long term evolution (Long Term Evolution, LTE) system, Email, short message service (Short Message Service, SMS) etc..

Memory 620 can be used for storing software program and module, and processor 680 is stored in memory 620 by operation Software program and module, thereby executing the various function application and data processing of mobile phone 600.Memory 620 can be main Including storing program area and storage data area, wherein storing program area can answer needed for storage program area, at least one function With program (such as sound-playing function, image playing function etc.) etc.；Storage data area, which can be stored, uses institute according to mobile phone 600 Data (such as audio data, phone directory etc.) of creation etc..In addition, memory 620 may include volatile memory, such as non- Volatility dynamic random access memory (Nonvolatile Random Access Memory, NVRAM), phase change arbitrary access Memory (Phase Change RAM, PRAM), magnetic-resistance random access memory (Magetoresistive RAM, MRAM) etc.；It deposits Reservoir 620 can also include nonvolatile memory, and a for example, at least disk memory, Electrical Erasable may be programmed read-only Memory (Electrically Erasable Programmable Read-Only Memory, EEPROM), flush memory device, Such as anti-or flash memory (NOR flash memory) or instead with flash memory (NAND flash memory), semiconductor devices, such as Solid state hard disk (Solid State Disk, SSD) etc..The memory 620 can also include the group of the memory of mentioned kind It closes.

Input unit 630 can be used for receiving the number or character information of input, and generate the user setting with mobile phone 600 And the related key signals input of function control.Specifically, input unit 630 may include touch panel 631 and other inputs Equipment 632.Touch panel 631, also referred to as touch screen, collecting the touch operation of user on it or nearby, (for example user makes With the operation of any suitable object or attachment such as finger, stylus on touch panel 631 or near touch panel 631), and Corresponding attachment device is driven according to preset formula.Optionally, touch panel 631 may include touch detecting apparatus and touching Touch two parts of controller.Wherein, the touch orientation of touch detecting apparatus detection user, and detect touch operation bring letter Number, transmit a signal to touch controller；Touch controller receives touch information from touch detecting apparatus, and is converted into Contact coordinate, then give processor 680, and order that processor 680 is sent can be received and executed.In addition, input unit 630 can realize touch panel 631 using multiple types such as resistance-type, condenser type, infrared ray and surface acoustic waves.In addition to touch-control Panel 631, input unit 630 can also include other input equipments 632.Specifically, other input equipments 632 may include but One be not limited in physical keyboard, function key (such as volume control button, switch key etc.), trace ball, mouse, operating stick etc. Kind is a variety of.

Display screen 640 can be used for showing information input by user or be supplied to user information and mobile phone 600 it is each Kind menu.Display screen 640 may include display panel 641, optionally, can use liquid crystal display (Liquid Crystal Display, LCD), the forms such as Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) it is aobvious to configure Show panel 641.Further, touch panel 631 can cover display panel 641, when touch panel 631 detect it is on it or attached After close touch operation, processor 680 is sent to determine the type of touch event, is followed by subsequent processing device 680 according to touch event Type corresponding visual output is provided on display panel 641.Although in Fig. 1, touch panel 631 and display panel 641 It is the input and input function of mobile phone 600 to be realized as two independent components, but in some embodiments it is possible to will touch Control panel 631 and display panel 641 are integrated and that realizes mobile phone 600 output and input function.In display screen 640 can be used for showing Hold, the content includes user interface, such as the starting-up interface of terminal, the user interface of application program.The content in addition to Family interface can also include information and data.Display screen 640 can be the built-in screen of terminal or other external displays are set It is standby.

Mobile phone 600 may also include at least one sensor 650, such as optical sensor, motion sensor, position sensor with And other sensors.Specifically, optical sensor may include ambient light sensor and proximity sensor, wherein ambient light sensor The brightness of available ambient enviroment light, the brightness of display panel 641 is adjusted according to the light and shade of ambient light, close to sensing Device can close display panel 641 and/or backlight when mobile phone 600 is moved in one's ear.Motion sensor includes acceleration sensing Device, acceleration transducer can detect the size of (generally three axis) acceleration in all directions, can detect that gravity when static Size and direction, can be used to identify mobile phone posture application (such as horizontal/vertical screen switching, dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, percussion) etc..Position sensor can be used for obtaining the geographical position coordinates of terminal, institute Stating geographical position coordinates can be by global positioning system (Global Positioning System, GPS), dipper system (COMPASS System), glonass system (GLONASS System) and Galileo system (GALILEO System) etc. obtain It takes.Position sensor can also be positioned by the base station and the local area network such as Wi-Fi or bluetooth of mobile Operation Network, Or it is comprehensive using above-mentioned positioning method, to obtain more accurate mobile phone position information.The top that can also configure as mobile phone 600 The other sensors such as spiral shell instrument, barometer, hygrometer, thermometer, infrared sensor, details are not described herein.

Voicefrequency circuit 660, loudspeaker 661 and microphone 662 (also referred to as microphone) can provide between user and mobile phone 600 Audio interface.Electric signal after the audio data received conversion can be transferred to loudspeaker 661, by loudspeaking by voicefrequency circuit 660 Device 661 is converted to voice signal output；On the other hand, the voice signal of collection is converted to electric signal by microphone 662, by audio Circuit 660 is converted to audio data after receiving, then by after the processing of audio data output processor 680, through RF circuit 108 to send It exports to memory 620 to such as another mobile phone, or by audio data to be further processed.

WiFi belongs to short range wireless transmission technology, and mobile phone 600 can help user's transceiver electronics by WiFi module 670 Mail, browsing webpage and access streaming video etc., it provides wireless broadband internet access for user.Although Fig. 1 is shown WiFi module 670, but it is understood that, and it is not belonging to must be configured into for mobile phone 600, it can according to need completely Do not change in the range of the essence of invention and omits.

Processor 680 is the control centre of mobile phone 600, utilizes each portion of various interfaces and connection whole mobile phone Point, by running or execute the software program and/or module that are stored in memory 620, and calls and be stored in memory 620 Interior data execute the various functions and processing data of mobile phone 600, to carry out integral monitoring to mobile phone.Processor 680 can be with It is central processing unit (central processing unit, CPU), general processor, digital signal processor (digital Signal processor, DSP), specific integrated circuit (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic Device, transistor logic, hardware component or any combination thereof.Processor 680, which may be implemented or execute, combines the application Various illustrative logic blocks, module and circuit described in disclosure.Processor 680 is also possible to realize computing function Combination, such as include one or more microprocessors combination, DSP and the combination of microprocessor etc..Optionally, processor 680 It may include one or more processors unit.Optionally, processor 680 can also integrate application processor and modulation /demodulation processing Device, wherein the main processing operation system of application processor, user interface and application program etc., modem processor is mainly located Reason wireless communication.It is understood that above-mentioned modem processor can not also be integrated into processor 680.

Mobile phone 600 further includes the power supply 690 (such as battery) powered to all parts, it is preferred that power supply can pass through electricity Management system and processor 680 are logically contiguous, to realize management charging, electric discharge and power consumption by power-supply management system The functions such as management.

It should be noted that mobile phone 600 can also include camera, bluetooth module etc. although being not shown, not go to live in the household of one's in-laws on getting married herein It states.

In embodiments of the present invention,

The memory 620, for storing program instruction；

The processor 680, for executing following operation according to the program instruction stored in the memory 620:

First community is resided in by the RF circuit 610；

When the signal quality of the first community is lower than preset level and the signal strength and second of the first community When relationship between the signal strength of cell meets the first preset condition, initiate from the first community to the second community Cell reselection；

Wherein, the second community be the first community co-frequency neighbor cell or All factors being equal, preference will be give to grade alien frequencies neighbour it is small Area.

In one example, the signal quality of the first community includes SINR or RSRQ, is executed in the processor 680 Before the initiation is from the first community to the operation of the cell reselection of the second community, the processor 680 is also used to Following operation is executed according to the program instruction stored in the memory 620:

Obtain the SINR of the first community or RSRQ of the first community；

When the SINR of the first community or the RSRQ of the first community are less than the first preset threshold, described is determined The signal quality of one cell is lower than preset level.

In one example, described initiate from the first community to the second community is executed in the processor 680 Cell reselection operation before, the processor 680 is also used to be executed according to the program instruction that stores in the memory 620 It operates below:

Calculate the assessed value R of the first community_s, the assessed value R of the first community_s=Q_meas,s+Q_Hyst- Q_{offset temp}；

Wherein, Q_meas,sFor the Reference Signal Received Power RSRP, Q of the first community_HystFor the first community The hysteresis effect value of RSRP, Q_{offset temp}For the temporary bias value of the first community；

Calculate the assessed value R of the second community_n, the assessed value R of the second community_n=Q_meas,n-Q_offset- Q_{offset temp}；

Wherein, Q_meas,nFor the RSRP of the second community, Q_offsetFor the deviant of the second community, Q_{offset temp}For The temporary bias value of the second community；

Work as R_nGreater than R_sWhen, it determines between the signal strength of the first community and the signal strength of the second community Relationship meets first preset condition.

In one example, described initiate from the first community to the second community is executed in the processor 680 Cell reselection operation before, the processor 680 is also used to be executed according to the program instruction that stores in the memory 620 It operates below:

Obtain Q_meas,nAnd Q_meas,s；

Wherein, Q_meas,nFor the Reference Signal Received Power RSRP, Q of the second community_meas,sFor the first community RSRP；

As the Q_meas,nMore than the Q_meas,sPlussage be greater than the second preset threshold when, determine the first community Relationship between signal strength and the signal strength of the second community meets first preset condition.

In one example, the processor 680 is also used to be executed according to the program instruction stored in the memory 620 It operates below: pre- lower than preset level duration T dynamic setting described second according to the signal quality of the first community If threshold value；

The signal strength of the determination first community and the signal of the second community are executed in the processor 680 Before relationship between intensity meets the operation of first preset condition, the processor 680 is also used to according to the storage The program instruction stored in device 620 executes following operation:

When the T < preset time, the first value is set by second preset threshold；

When the T > preset time, the second value is set by second preset threshold.

The embodiment of the present invention, processor 680 is according to the program instruction stored on memory 620, for the same of serving cell Frequency adjacent district or the iso-frequency adjacent community of All factors being equal, preference will be give to grade, not only by the signal strength of the signal strength of serving cell and adjacent cell Between relationship meet a reselection conditions of the preset condition as cell reselection, and by the signal quality of cell lower than default Level initiates cell reselection, to promote to service when this two reselection conditions all meet as another reselection conditions immediately When cell signal quality is poor, can rapid reselection to other adjacent cells, to increase call successful rate and reduce business Time delay, the user experience is improved.

Fig. 7 is a kind of communication device schematic diagram provided by the embodiments of the present application, as shown in fig. 7, the communication device 700 can To be chip, the chip includes processing unit and communication unit.The processing unit can be processor 710, the processing Device can be previously described various types of processors.The communication unit for example can be input/output interface 720, pipe Foot or circuit etc., the communication unit may include system bus or connect with system bus.Optionally, the communication device It further include storage unit, the storage unit can be the memory 730 of the chip interior, such as register, caching, random Access memory (random access memory, RAM), EEPROM or FLASH etc.；The storage unit can also be position In the memory of the chip exterior, which can be previously described various types of memories.Processor is connected to Memory, the instruction which can be stored with run memory, so that the communication device executes above-mentioned Fig. 2 to shown in Fig. 4 Method.

It, can be wholly or partly by software, hardware, firmware or it is any in above-mentioned each embodiment of the present invention Combination is to realize.When implemented in software, it can entirely or partly realize in the form of a computer program product.The meter Calculation machine program product includes one or more computer instructions.Load and execute on computers the computer program instructions When, it entirely or partly generates according to process or function described in the embodiment of the present invention.The computer can be general-purpose computations Machine, special purpose computer, computer network or other programmable devices.The computer instruction can store can in computer It reads in storage medium, or is transmitted from a computer-readable medium to another computer-readable medium, for example, the calculating Machine instruction can pass through wired (such as coaxial cable, optical fiber, number from a web-site, computer, server or data center Word user line (digital subscriber line, DSL)) or wireless (such as infrared, wireless, microwave etc.) mode to another A web-site, computer, server or data center are transmitted.The computer readable storage medium can be computer Any usable medium that can be accessed either includes the data such as one or more usable mediums integrated server, data center Store equipment.The usable medium can be magnetic medium (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or Person's semiconductor medium (for example, solid state hard disk) etc..

Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention Protection scope, all any modification, equivalent substitution, improvement and etc. on the basis of technical solution of the present invention, done should all Including within protection scope of the present invention.

Claims (17)

1. a kind of method of cell reselection, which is characterized in that the described method includes:

Terminal resides in first community；

When the signal quality of the first community is lower than preset level and the signal strength and second community of the first community Signal strength between relationship when meeting the first preset condition, the terminal is initiated small from the first community to described second The cell reselection in area；

Wherein, the second community is the co-frequency neighbor cell of the first community or the iso-frequency adjacent community of All factors being equal, preference will be give to grade.

2. the method as described in claim 1, which is characterized in that the signal quality of the first community includes that signal and interference add Noise ratio SINR or Reference Signal Received Quality RSRQ are initiated in the terminal from the first community to the second community Before cell reselection, the method also includes:

The terminal obtains the SINR of the first community or RSRQ of the first community；

When the SINR of the first community or the RSRQ of the first community are less than the first preset threshold, the terminal determines institute The signal quality of first community is stated lower than preset level.

3. method according to claim 1 or 2, which is characterized in that initiate in the terminal from the first community to described Before the cell reselection of second community, the method also includes:

The terminal calculates the assessed value R of the first community_s, the assessed value R of the first community_s=Q_meas,s+Q_Hyst- Q_{offset temp}；

Wherein, Q_meas,sFor the Reference Signal Received Power RSRP, Q of the first community_HystFor the RSRP of the first community Hysteresis effect value, Q_{offset temp}For the temporary bias value of the first community；

The terminal calculates the assessed value R of the second community_n, the assessed value R of the second community_n=Q_meas,n-Q_offset- Q_{offset temp}；

Wherein, Q_meas,nFor the RSRP of the second community, Q_offsetFor the deviant of the second community, Q_{offset temp}It is described The temporary bias value of second community；

Work as R_nGreater than R_sWhen, the terminal determine the first community signal strength and the second community signal strength it Between relationship meet first preset condition.

4. method according to claim 1 or 2, which is characterized in that initiate in the terminal from the first community to described Before the cell reselection of second community, the method also includes:

The terminal obtains Q_meas,nAnd Q_meas,s；

Wherein, Q_meas,nFor the Reference Signal Received Power RSRP, Q of the second community_meas,sFor the RSRP of the first community；

As the Q_meas,nMore than the Q_meas,sPlussage be greater than the second preset threshold when, the terminal determines that described first is small Relationship between the signal strength in area and the signal strength of the second community meets first preset condition.

5. method as claimed in claim 4, which is characterized in that the terminal is lower than according to the signal quality of the first community Second preset threshold is set dynamically in preset level duration T；

Determine that the relationship between the signal strength of the first community and the signal strength of the second community is full in the terminal Before foot first preset condition, the method also includes:

When the T < preset time, second preset threshold is set the first value by the terminal；

When the T > preset time, second preset threshold is set the second value by the terminal.

6. a kind of terminal, which is characterized in that the terminal includes:

Communication module, for residing in first community；

Processing module is strong lower than the signal of preset level and the first community for the signal quality when the first community It spends when meeting the first preset condition the relationship between the signal strength of second community, initiates from the first community to described the The cell reselection of two cells；Wherein, the second community is the co-frequency neighbor cell of the first community or All factors being equal, preference will be give to grade Iso-frequency adjacent community.

7. terminal as claimed in claim 6, which is characterized in that the signal quality of the first community includes that signal and interference add Noise ratio SINR or Reference Signal Received Quality RSRQ, the processing module is for initiating from the first community to described the Before the cell reselection of two cells, the processing module, be also used to obtain the first community SINR or the first community RSRQ；When the SINR of the first community or the RSRQ of the first community are less than the first preset threshold, described is determined The signal quality of one cell is lower than preset level.

8. terminal as claimed in claims 6 or 7, which is characterized in that the processing module is small from described first for initiating To before the cell reselection of the second community, the processing module is also used to calculate the assessed value R of the first community in area_s, The assessed value R of the first community_s=Q_meas,s+Q_Hyst-Q_{offset temp}；Wherein, Q_meas,sBelieve for the reference of the first community Number receive power RSRP, Q_HystFor the hysteresis effect value of the RSRP of the first community, Q_{offset temp}For the first community Temporary bias value；Calculate the assessed value R of the second community_n, the assessed value R of the second community_n=Q_meas,n-Q_offset- Q_{offset temp}；Wherein, Q_meas,nFor the RSRP of the second community, Q_offsetFor the deviant of the second community, Q_{offset temp} For the temporary bias value of the second community；Work as R_nGreater than R_sWhen, determine the signal strength of the first community and described second small Relationship between the signal strength in area meets first preset condition.

9. terminal as claimed in claims 6 or 7, which is characterized in that the processing module is small from described first for initiating To before the cell reselection of the second community, the processing module is also used to obtain Q in area_meas,nAnd Q_meas,s；Wherein, Q_meas,n For the Reference Signal Received Power RSRP, Q of the second community_meas,sFor the RSRP of the first community；As the Q_meas,nIt is super Cross the Q_meas,sPlussage when being greater than the second preset threshold, determine the signal strength of the first community and described second small Relationship between the signal strength in area meets first preset condition.

10. terminal as claimed in claim 9, which is characterized in that the processing module is also used to according to the first community Second preset threshold is set dynamically lower than preset level duration T in signal quality；

The processing module is for determining between the signal strength of the first community and the signal strength of the second community Relationship meet first preset condition before, the processing module is also used to when the T < preset time, by described Two preset thresholds are set as the first value；When the T > preset time, second is set by second preset threshold Value.

11. a kind of terminal, which is characterized in that the terminal includes: memory, processor and communication interface；

The memory, for storing program instruction；

The processor, for executing following operation according to the program instruction stored in the memory:

First community is resided in by the communication interface；

When the signal quality of the first community is lower than preset level and the signal strength and second community of the first community Signal strength between relationship meet the first preset condition when, initiate from the first community to the cell of the second community Gravity treatment；

Wherein, the second community is the co-frequency neighbor cell of the first community or the iso-frequency adjacent community of All factors being equal, preference will be give to grade.

12. terminal as claimed in claim 11, which is characterized in that the signal quality of the first community includes signal and interference Plus noise ratio SINR or Reference Signal Received Quality RSRQ execute described initiate from the first community to institute in the processor Before the operation for stating the cell reselection of second community, the processor is also used to according to the program instruction stored in the memory Execute following operation:

Obtain the SINR of the first community or RSRQ of the first community；

When the SINR of the first community or the RSRQ of the first community are less than the first preset threshold, determine that described first is small The signal quality in area is lower than preset level.

13. the terminal as described in claim 11 or 12, which is characterized in that execute described initiate from described the in the processor To before the operation of the cell reselection of the second community, the processor is also used to store according in the memory one cell Program instruction execute following operation:

Calculate the assessed value R of the first community_s, the assessed value R of the first community_s=Q_meas,s+Q_Hyst-Q_{offset temp}；

Wherein, Q_meas,sFor the Reference Signal Received Power RSRP, Q of the first community_HystFor the RSRP of the first community Hysteresis effect value, Q_{offset temp}For the temporary bias value of the first community；

Calculate the assessed value R of the second community_n, the assessed value R of the second community_n=Q_meas,n-Q_offset-Q_{offset temp}；

Wherein, Q_meas,nFor the RSRP of the second community, Q_offsetFor the deviant of the second community, Q_{offset temp}It is described The temporary bias value of second community；

Work as R_nGreater than R_sWhen, determine the relationship between the signal strength of the first community and the signal strength of the second community Meet first preset condition.

14. the terminal as described in claim 11 or 12, which is characterized in that execute described initiate from described the in the processor To before the operation of the cell reselection of the second community, the processor is also used to store according in the memory one cell Program instruction execute following operation:

Obtain Q_meas,nAnd Q_meas,s；

Wherein, Q_meas,nFor the Reference Signal Received Power RSRP, Q of the second community_meas,sFor the RSRP of the first community；

As the Q_meas,nMore than the Q_meas,sPlussage be greater than the second preset threshold when, determine the signal of the first community Relationship between intensity and the signal strength of the second community meets first preset condition.

15. terminal as claimed in claim 14, which is characterized in that the processor is also used to store according in the memory Program instruction execute following operation: according to the signal quality of the first community lower than preset level duration T dynamic Second preset threshold is set；

The processor execute the determination first community signal strength and the second community signal strength it Between relationship meet the operation of first preset condition before, the processor is also used to according to storing in the memory Program instruction executes following operation:

When the T < preset time, the first value is set by second preset threshold；

When the T > preset time, the second value is set by second preset threshold.

16. a kind of communication device, which is characterized in that including processor, the processor is configured to supporting the communication device Execute method according to any one of claims 1 to 5.

17. a kind of computer readable storage medium, including instruction, which is characterized in that when described instruction is run on computers, The computer is set to execute method according to any one of claims 1 to 5.