CN106688278A

CN106688278A - Method, apparatus and system for accessing cell

Info

Publication number: CN106688278A
Application number: CN201580046740.1A
Authority: CN
Inventors: 朱松; 于光炜; 于映辉
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-08-31
Filing date: 2015-08-31
Publication date: 2017-05-17
Also published as: WO2017035757A1

Abstract

A method, apparatus and system for accessing a cell, the method comprising: a terminal device determines a first target cell and acquires first coverage information of the first target cell; the terminal device camps on the first target cell when determining that the first coverage information satisfies a current coverage requirement of the terminal device. In this solution, when accessing a cell, the terminal device needs to consider coverage information of the cell, and camps on the cell only when the coverage information satisfies the current coverage requirement of the terminal device, thus avoiding the existing defects of high power consumption of the terminal device and low utilization rate of radio resources.

Description

A kind of method for accessing cell, apparatus and system

Technical field

The present invention relates to communication technical field, more particularly to a kind of method for accessing cell, apparatus and system.

Background technology

Now, mobile digital communication network has obtained rapid development in China, with the growth of mobile communication business, and carrying out mobile data value-added services using the existing resource of mobile communications network and internet becomes inevitable trend.

Expect 2022, M2M (Machine-to-Machine, equipment is to equipment) connection quantity be up to 50,000,000,000, M2M business scenario mainly includes wired home/building, intelligent measure (meter reading business), logistic track, environmental monitoring, reading intelligent agriculture and disaster alarm etc..Requirement of the different business scenarios to communication system is different, for example, being directed to this business scenario of intelligent measure, ammeter, water meter, gas meter etc. is possible to be deployed in basement, therefore, it is necessary to which communication system provides more preferable covering power under this business scenario.In another example, for this business scenario of forest fire accident alarm, the stand-by time for terminal device proposes tightened up requirement, and stand-by time is longer, and the manual maintenance cost for changing battery etc. is lower, is conducive to the wider array of application field of M2M operation expandings.

At present, terminal device in M2M networks mainly selects resident cell according to the intensity of reference signal, and then resides in the cell, still, if terminal device resides in the cell by this method, there is that power consumption is larger and the relatively low defect of wireless resource utility efficiency.

For example, terminal device is in the coverage enhancement region of two cells of cell A and cell B, the reception covering grade of terminal device is 5dB, wherein, cell A covering grade is respectively 0dB, 10dB and 20dB, cell B covering grade is respectively 0dB, 6dB and 15dB, the intensity of the reference signal for the cell A that terminal device is received, the intensity of the cell B received more than terminal device reference signal.In this case, terminal device can regard cell A as persistent district if resident cell is selected according to the intensity of the reference signal received, and select 10dB covering grade, but, the power consumption of terminal device is larger under 10dB covering grade, and the utilization rate of Radio Resource is relatively low.

In summary, at present there is the defect that terminal device power consumption is larger and wireless resource utility efficiency is relatively low in the method for access cell.

The content of the invention

The embodiments of the invention provide a kind of method for accessing cell, the defect that the power consumption for solving terminal device present in prior art is larger and wireless resource utility efficiency is relatively low.

First aspect there is provided it is a kind of access cell method, including：

Terminal device obtains the signal intensity of each cell, and regard the maximum in the signal intensity of acquisition as the first maximum signal；

The terminal device will be provided with the cell of first maximum signal, be used as first object cell；

The terminal device obtains the first coverage information of the first object cell；

When the terminal device determines that first coverage information meets the current covering demand of the terminal device, the first object cell is resided in.

With reference in a first aspect, in the first possible implementation, methods described also includes：

When the terminal device determines that first coverage information is unsatisfactory for the current covering demand, the second Target cell is determined, and obtain the second coverage information of second Target cell；

When the terminal device determines that second coverage information meets the current covering demand, second Target cell is resided in.

With reference to the first possible implementation of first aspect, in second of possible implementation, the terminal device determines the second Target cell, including：

The terminal device selects the second maximum signal from the first residual signal intensity；

The terminal device will be provided with the cell of second maximum signal, be used as second Target cell；

Wherein, the residual signal intensity of first maximum signal is removed in the signal intensity that the first residual signal intensity obtains for the terminal device.

With reference to the first or second of possible implementation of first aspect, in the third possible implementation, the terminal device obtains the second coverage information of second Target cell, including：

The terminal device obtains second coverage information in the first object cell；Or

The terminal device accesses second Target cell, and second coverage information is obtained in second Target cell.

With reference to first aspect, and the first of first aspect is to the third possible implementation, in the 4th kind of possible implementation, first coverage information and second coverage information include covering grade information, code modulation mode, received signal to noise ratio requirement, the one or any combination received in Signal to Interference plus Noise Ratio requirement.

Second aspect there is provided it is a kind of access cell method, including：

Base station determines the second Target cell, and second Target cell is the cell outside the coverage in the base station；

Base station obtains the second coverage information of the second Target cell, and broadcasts second coverage information.

With reference to second aspect, in the first possible implementation, the base station is determined before second Target cell, in addition to：

The base station determines first object cell, and the first object cell is within the coverage of the base station；

The base station obtains the first coverage information of the first object cell, and broadcasts first coverage information.

With reference to the first possible implementation of second aspect, in second of possible implementation, first coverage information and second coverage information include covering grade information, code modulation mode, received signal to noise ratio requirement, the one or any combination received in Signal to Interference plus Noise Ratio requirement.

The third aspect there is provided it is a kind of access cell method, including：

Terminal device obtains the signal intensity of each cell；

Signal intensity in the signal intensity of acquisition more than or equal to signal strength threshold value is distinguished corresponding cell by the terminal device, is used as at least one Target cell；

The terminal device obtains at least one described Target cell and distinguishes corresponding coverage information；

The terminal device at least one Target cell according to acquisition distinguishes corresponding coverage information, selects corresponding Target cell to be resident.

With reference to the third aspect, in the first possible implementation, the terminal device obtains at least one described Target cell and distinguishes corresponding coverage information, including：

For any one Target cell at least one described Target cell, terminal device access any one Target cell obtains the coverage information corresponding to any one Target cell；Or

The terminal device obtains at least one described Target cell in first object cell and distinguishes corresponding coverage information, and the first object cell is the Target cell that corresponding signal intensity is maximum at least one described Target cell.

With reference to the third aspect, in second of possible implementation, the terminal device obtains at least one described Target cell and distinguishes corresponding coverage information, including：

The terminal device determines first object cell, and obtains the coverage information of the first object cell, and the first object cell is the Target cell that corresponding signal intensity is maximum at least one described Target cell；

The terminal device receives coverage information difference and indicated, the coverage information difference indicates to be used to indicate the second Target cell, and second Target cell is the cell different from the coverage information of the first object cell of corresponding coverage information at least one described Target cell；

The terminal device is indicated according to coverage information difference, obtains the coverage information of second Target cell.

With reference to the third aspect, and the first of the third aspect is to second of possible implementation, in the third possible implementation, the terminal device at least one Target cell according to acquisition distinguishes corresponding coverage information, corresponding Target cell is selected to be resident, including：

The terminal device at least one Target cell according to acquisition distinguishes corresponding coverage information, the 3rd Target cell is filtered out from least one described Target cell, and reside in the 3rd Target cell.

With reference to the third possible implementation of the third aspect, in the 4th kind of possible implementation, the terminal device at least one Target cell according to acquisition distinguishes corresponding coverage information, and the 3rd Target cell is filtered out from least one described Target cell, including：

The terminal device from least one Target cell described in acquisition distinguishes corresponding coverage information, Determine that coverage information meets at least one the 4th Target cell of covering demand；

For any one 4th Target cell at least one described the 4th Target cell, perform respectively：

The terminal device determines received signal strength of the terminal device in any one 4th Target cell, and the corresponding covering grade required less than the received signal strength in any one 4th Target cell；Require to filter out maximal cover grade in being less than the covering grade of the reception covering grade from corresponding；

The terminal device determines the maximum being directed in the maximal cover grade that each the 4th Target cell is filtered out respectively；

The terminal device regard the 4th Target cell corresponding to the maximum as the 3rd Target cell.

With reference to the third aspect, and the first of the third aspect is to the 4th kind of possible implementation, in the 5th kind of possible implementation, the coverage information includes covering grade information, code modulation mode, received signal to noise ratio requirement, the one or any combination received in Signal to Interference plus Noise Ratio requirement.

Fourth aspect there is provided it is a kind of access cell method, including：

Base station determines the cell for having outside the base station range at least two Target cells, at least two Target cell；

The base station obtains at least two Target cell and distinguishes corresponding coverage information；

At least two Target cells described in the base station broadcast distinguish corresponding coverage information.

With reference to fourth aspect, in the first possible implementation, base station is determined after at least two Target cells, in addition to：

The base station determines first object cell from least two Target cell, and the first object cell is the Target cell that corresponding signal intensity is maximum at least two Target cell；

The base station sends coverage information difference to the terminal device and indicates that the coverage information difference is indicated for indicating corresponding coverage information second Target cell different from the coverage information of the first object cell at least two Target cell.

There is provided a kind of terminal device in terms of 5th, including：

Receiving module, the signal intensity for obtaining each cell；

Processing module, the first maximum signal is used as the maximum in the signal intensity that obtains the receiving module；

The processing module is additionally operable to, and be will be provided with the cell for the first maximum signal that the processing module is obtained, is used as first object cell；

The receiving module is additionally operable to, and obtains the first coverage information of the first object cell that the processing module is determined；

The processing module is additionally operable to, and determines that the first coverage information of the receiving module acquisition meets the current covering demand of the terminal device；

Resident module, for when the processing module determines that first coverage information meets the current covering demand of the terminal device, residing in the first object cell.

With reference to the 5th aspect, in the first possible implementation, the processing module is additionally operable to, and when determining that first coverage information is unsatisfactory for the current covering demand, determines the second Target cell；

The receiving module is additionally operable to, and obtains the second coverage information of the second Target cell that the processing module is determined；

The processing module is additionally operable to, and determines that the second coverage information that the receiving module is obtained meets the current covering demand；

The resident module is additionally operable to, and when the processing module determines that second coverage information meets the current covering demand, resides in second Target cell.

With reference to the first possible implementation of the 5th aspect, in second of possible implementation, when the processing module determines the second Target cell, it is specially：

The second maximum signal is selected from the first residual signal intensity；

The cell of second maximum signal is will be provided with, second Target cell is used as；

With reference to the first or second of possible implementation of the 5th aspect, in the third possible implementation, when the receiving module obtains the second coverage information of the second Target cell that the processing module is determined, it is specially：

Second coverage information is obtained in the first object cell that the processing module is determined；Or

The second Target cell that the processing module is determined is accessed, second coverage information is obtained in second Target cell.

With reference to the 5th aspect, and the 5th aspect the first to the third possible implementation, in the 4th kind of possible implementation, first coverage information and second coverage information include covering grade information, code modulation mode, received signal to noise ratio requirement, the one or any combination received in Signal to Interference plus Noise Ratio requirement.

There is provided a kind of base station in terms of 6th, including：

Processing module, for determining the second Target cell, second Target cell is the cell outside the coverage in the base station；

Receiving module, the second coverage information for obtaining the second Target cell that the processing module is determined；

Sending module, for broadcasting the second coverage information that the receiving module is obtained.

With reference to the 6th aspect, in the first possible implementation, the processing module is additionally operable to, and determines first object cell, and the first object cell is within the coverage of the base station；

The receiving module is additionally operable to, and obtains the first coverage information of the first object cell；

The sending module is additionally operable to, and broadcasts the first coverage information that the receiving module is obtained.

With reference to the first possible implementation of the 6th aspect, in second of possible implementation, first coverage information and second coverage information include covering grade information, code modulation mode, received signal to noise ratio requirement, the one or any combination received in Signal to Interference plus Noise Ratio requirement.

There is provided a kind of terminal device in terms of 7th, including：

Receiving module, the signal intensity for obtaining each cell；

Processing module, the signal intensity for being more than or equal to signal strength threshold value in the signal intensity that obtains the receiving module distinguishes corresponding cell, is used as at least one Target cell；

The receiving module is additionally operable to, and obtains the corresponding coverage information of at least one Target cell difference that the processing module is determined；

The processing module is additionally operable to, and at least one Target cell distinguishes corresponding coverage information according to being obtained the receiving module, selects corresponding Target cell to be resident.

With reference to the 7th aspect, in the first possible implementation, when the receiving module obtains at least one Target cell difference corresponding coverage information that the processing module is determined, it is specially：

For any one Target cell at least one described Target cell, the coverage information corresponding to any one Target cell acquisition any one Target cell is accessed；Or

At least one described Target cell is obtained in the first object cell that the processing module is determined and distinguishes corresponding coverage information, the first object cell is the Target cell that corresponding signal intensity is maximum at least one described Target cell.

With reference to the 7th aspect, in second of possible implementation, the processing module is additionally operable to, and determines first object cell, and the first object cell is the Target cell that corresponding signal intensity is maximum at least one described Target cell；

When the receiving module obtains at least one Target cell difference corresponding coverage information that the processing module is determined, it is specially：

The coverage information for the first object cell that the processing module is determined is obtained,；

Reception coverage information difference indicates that the coverage information difference indicates to be used to indicate the second Target cell, and second Target cell is the cell different from the coverage information of the first object cell of corresponding coverage information at least one described Target cell；

Indicated according to coverage information difference, obtain the coverage information of second Target cell.

With reference to the 7th aspect, and the 7th aspect the first to second of possible implementation, in the third possible implementation, the processing module at least one Target cell according to being obtained the receiving module distinguishes corresponding coverage information, when selecting corresponding Target cell progress resident, it is specially：

At least one Target cell distinguishes corresponding coverage information according to being obtained the receiving module, filters out the 3rd Target cell at least one Target cell determined from the processing module, and reside in the 3rd Target cell.

With reference to the third possible implementation of the 7th aspect, in the 4th kind of possible implementation, the processing module at least one Target cell according to being obtained the receiving module distinguishes corresponding coverage information, when filtering out three Target cells at least one Target cell determined from the processing module, it is specially：

From at least one Target cell described in the receiving module is obtained distinguishes corresponding coverage information, determine that coverage information meets at least one the 4th Target cell of covering demand；

Determine received signal strength of the terminal device in any one 4th Target cell, and the corresponding covering grade required less than the received signal strength in any one 4th Target cell；Require to filter out maximal cover grade in being less than the covering grade of the reception covering grade from corresponding；

It is determined that the maximum in the maximal cover grade filtered out respectively for each the 4th Target cell；

It regard the 4th Target cell corresponding to the maximum as the 3rd Target cell.

With reference to the 7th aspect, and the 7th aspect the first to the 4th kind of possible implementation, in the 5th kind of possible implementation, the coverage information includes covering grade information, code modulation mode, received signal to noise ratio requirement, the one or any combination received in Signal to Interference plus Noise Ratio requirement.

Eighth aspect there is provided a kind of base station, including：

Processing module, for the cell for determining to have outside the base station range at least two Target cells, at least two Target cell；

Receiving module is used for, and obtains the corresponding coverage information of at least two Target cells difference that the processing module is determined；

Sending module, corresponding coverage information is distinguished for broadcasting at least two Target cells that the receiving module is obtained.

With reference to eighth aspect, in the first possible implementation, the processing module is additionally operable to, first object cell is determined at least two Target cells determined from the processing module, the first object cell is the Target cell that corresponding signal intensity is maximum at least two Target cell；

The sending module is additionally operable to, coverage information difference, which is sent, to the terminal device indicates that the coverage information difference is indicated for indicating corresponding coverage information second Target cell different from the coverage information of the first object cell at least two Target cell.

9th aspect, there is provided a kind of communication system, including such as the 5th aspect, or the first in terms of the 5th is to the terminal device described in the 4th kind of possible any one of implementation, and the 6th aspect, or the 6th aspect the first to the base station described in second of possible any one of implementation.

Tenth aspect, a kind of communication system is provided, in terms of the such as the 7th, or the 7th aspect the first to the terminal device described in the 5th kind of possible any one of implementation, and the base station as described in the first possible implementation of eighth aspect or eighth aspect.

A kind of method for accessing cell is provided in the embodiment of the present invention, terminal device obtains the signal intensity of each cell, and regard the maximum in the signal intensity of acquisition as the first maximum signal；Terminal device will be provided with the cell of the first maximum signal, be used as first object cell；Terminal device, and obtain the first coverage information of first object cell；When terminal device determines that the first coverage information meets the current covering demand of terminal device, reside in first object cell, in this scenario, terminal device is when accessing cell, the coverage information of reference cell is wanted, when coverage information meets the current covering demand of terminal device, the cell is just resided in, therefore, it is to avoid power consumption is larger and wireless resource utility efficiency the is relatively low defect for the terminal device that presently, there are.

Brief description of the drawings

Fig. 1 is a kind of flow chart provided in an embodiment of the present invention for accessing cell；

Fig. 2 is another flow chart provided in an embodiment of the present invention for accessing cell；

Fig. 3 is another flow chart provided in an embodiment of the present invention for accessing cell；

Fig. 4 is another flow chart provided in an embodiment of the present invention for accessing cell；

Fig. 5 is a kind of embodiment provided in an embodiment of the present invention for accessing cell；

Fig. 6 is another embodiment provided in an embodiment of the present invention for accessing cell；

Fig. 7 A are a kind of schematic diagram of terminal device provided in an embodiment of the present invention；

Fig. 7 B are another schematic diagram of terminal device provided in an embodiment of the present invention；

Fig. 8 A are a kind of schematic diagram of base station provided in an embodiment of the present invention；

Fig. 8 B are another schematic diagram of base station provided in an embodiment of the present invention；

Fig. 9 A are another schematic diagram of terminal device provided in an embodiment of the present invention；

Fig. 9 B are another schematic diagram of terminal device provided in an embodiment of the present invention；

Figure 10 A are another schematic diagram of base station provided in an embodiment of the present invention；

Figure 10 B are another schematic diagram of base station provided in an embodiment of the present invention.

Embodiment

In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing, the present invention is described in further detail, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, all other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.

The techniques described herein may be used in various communication systems, for example, GSM (Global System for Mobile communications, global system for mobile communications), CDMA (Code Division Multiple Access, CDMA) system, TDMA (Time Division Multiple Access, time division multiple acess) system, WCDMA (Wideband Code Division Multiple Access Wireless, WCDMA), FDMA (Frequency Division Multiple Addressing, frequency division multiple access) system, OFDMA (Orthogonal Frequency-Division Multiple Access, OFDM) system, Single Carrier Frequency Division Multiple Access (SC-FDMA (Single-carrier Frequency-Division Multiple Access, single-carrier frequency division multiple access)) system, GPRS (General Packet Radio Service, GPRS) system, (LTE (Long Term Evolution, Long Term Evolution) system, and other such communication systems.

Various aspects are described herein in connection with wireless terminal device equipment and/or base station.

Wireless terminal device can refer to the equipment for providing a user voice and/or data connectivity, portable equipment with wireless connecting function or other processing equipments for being connected to radio modem.Wireless terminal device can be through RAN (Radio Access Network, wireless access network) communicated with one or more core nets, wireless terminal device can be mobile terminal device, such as mobile phone (or being " honeycomb " phone) and the computer with mobile terminal device, for example, can be portable, pocket, hand-held, built-in computer or vehicle-mounted mobile device, they exchange language and/or data with wireless access network.For example, PCS (Personal Communication Service, PCS) phone, wireless phone, SIP (Session Initiation Protocol, Session initiation Protocol phone, WLL (Wireless Local Loop, WLL) stand, PDA (Personal Digital Assistant, individual digital Assistant) etc. equipment.Wireless terminal device is referred to as system, SU (Subscriber Unit, subscri er unit), SS (Subscriber Station, subscriber station), MS (Mobile Station, movement station), mobile station (Mobile), RS (Remote Station, distant station), AP (Access Point, access point), RT (Remote Terminal, RTU), AT (Access Terminal, access terminal equipment), UT (User Terminal, subscriber terminal equipment), UA (User Agent, user agent), UD (User Device, user equipment), or UE (User Equipment, subscriber's installation).

Base station (for example, access point) can refer in access network the equipment communicated on interface in the air by one or more sectors with wireless terminal device.Base station can be used for the air frame that will be received and IP (Internet Protocol, Internet protocol) it is grouped and is mutually changed, as the router between wireless terminal device and the remainder of access network, the remainder of wherein access network may include Internet protocol (IP) network.Attribute management of the base station also tunable to air interface.For example, base station can be the BTS in GSM or CDMA, (Base Transceiver Station, base station), it can also be the base station (NodeB) in WCDMA, can also be eNB (Evolved Node B, evolved base station) or e-NodeB (Evolutional Node B in LTE, evolved base station), the application is not limited.

It should be noted that, the core net node equipment that the present invention is provided can apply to different communications network systems, including but not limited to SAE (System Architecture Evolved, System Architecture Evolution network)/LTE network, UMTS (Universal Mobile Telecommunications System, UMTS) network, CDMA etc..Core net node equipment includes but is not limited to mobility management entity MME (Mobile Management Entity, mobility management entity), SGSN (Serving GPRS Support Node, Serving GPRS Support Node；GPRS (General Packet Radio Service, GPRS)) or MSC (Mobile Switching Center, mobile switching centre), herein without limiting.For example, for SAE/LTE networks, its core net node equipment can be MME, radio access node equipment can be eNB；For UMTS network, its core net node equipment can be SGSN or MSC, and radio access node equipment can be RNC or nodeB.Illustrated below so that cellular network is SAE/LTE networks as an example, other cellular networks, which are referred to following embodiments, to be implemented.

In addition, the terms " system " and " network " are often used interchangeably herein.The terms "and/or", only a kind of incidence relation for describing affiliated partner, represents there may be three kinds of relations, example Such as, A and/or B, can be represented：Individualism A, while there is A and B, these three situations of individualism B.In addition, letter "/" herein, it is a kind of relation of "or" to typically represent forward-backward correlation object.

The preferred embodiment of the present invention is described in detail with reference to Figure of description, it should be understood that, preferred embodiment described herein is merely to illustrate and explain the present invention, it is not intended to limit the present invention, and in the case where not conflicting, the feature in embodiment and embodiment in the application can be mutually combined.

The preferred embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.

Embodiment one

As shown in fig.1, in the embodiment of the present invention, a kind of flow for accessing cell is as follows：

Step 100：Terminal device obtains the signal intensity of each cell, and regard the maximum in the signal intensity of acquisition as the first maximum signal；

Step 110：Terminal device will be provided with the cell of the first maximum signal, be used as first object cell；

Step 120：Terminal device obtains the first coverage information of first object cell；

Step 130：When terminal device determines that the first coverage information meets the current covering demand of terminal device, first object cell is resided in.

In the embodiment of the present invention, optionally, signal intensity can be reference signal strength, it is of course also possible to be the signal intensity of other forms, no longer be described in detail herein.Illustrated below by taking reference signal strength as an example.

For example：Terminal device obtains the reference signal of 10 cells, and the reference signal strength of the reference signal of each cell is as follows：Reference signal strength 1, reference signal strength 2, reference signal strength 3 ..., reference signal strength 10, reference signal strength 1 is corresponding with cell 1, reference signal strength 2 and the correspondence of cell 2, reference signal strength 3 and the correspondence of cell 3 ..., reference signal strength 10 and the correspondence of cell 10, if reference signal strength 4 is the maximum in 10 reference signal strengths, the corresponding cell 4 of reference signal strength 4 is regard as first object cell；If reference signal strength 5 is the maximum in 10 reference signal strengths, the corresponding cell 5 of reference signal strength 5 is regard as first object cell；If reference signal strength 6 is the maximum in 10 reference signal strengths, using the corresponding cell 6 of reference signal strength 6 as first object cell, the like, no longer it is described in detail one by one herein.

Foregoing description is that the first coverage information of first object cell meets the current covering need of terminal device Situation about asking, in actual applications, the first coverage information may be unsatisfactory for the current covering demand of terminal device, therefore, in the embodiment of the present invention, and this method also includes following operation：

When terminal device determines that the first coverage information is unsatisfactory for currently covering demand, the second Target cell is determined, and obtain the second coverage information of the second Target cell；

When terminal device determines that the second coverage information meets current covering demand, the second Target cell is resided in.

For example, terminal device determines first object cell, and the first coverage information of first object cell is obtained, judge whether the first coverage information meets the current covering demand of terminal device, if, terminal device resides in first object cell, otherwise, it determines the second Target cell, and obtain the second coverage information of the second Target cell, when it is determined that the second coverage information meets the current covering demand of terminal device, terminal device resides in the second Target cell.

Foregoing description is when the first coverage information of first object cell is unsatisfactory for the current covering demand of terminal device, reside in the situation of the second Target cell, but, in actual applications, second coverage information of the second Target cell may also be unsatisfactory for the current covering demand of terminal device, now, terminal device will determine the 3rd Target cell, and judge whether the 3rd coverage information of the 3rd Target cell meets the current covering demand of terminal device, if meeting, terminal device resides in the 3rd Target cell, otherwise, determine the 4th Target cell, and perform the step of whether the 4th coverage information of the 4th Target cell meets the current covering demand of terminal device judged, subsequent process is similar with said process, no longer it is described in detail herein.

In the embodiment of the present invention, terminal device determines that the mode of the second Target cell has a variety of, optionally, can be in the following way：

Terminal device selects the second maximum signal from the first residual signal intensity；

Terminal device will be provided with the cell of the second maximum signal as the second Target cell；

Wherein, the residual signal intensity of the first maximum signal is removed in the signal intensity that the first residual signal intensity obtains for terminal device, the first maximum signal is the maximum in the signal intensity of acquisition.

Still illustrated below by taking reference signal as an example.

For example：Terminal device obtains the reference signal of 10 cells, and the reference signal strength of each reference signal is as follows：Reference signal strength 1, reference signal strength 2, reference signal strength 3 ..., reference signal strength 10, reference signal strength 1 is corresponding with cell 1, reference signal strength 2 and the correspondence of cell 2, Reference signal strength 3 is corresponding with cell 3 ..., reference signal strength 10 and the correspondence of cell 10, if reference signal strength 4 is the maximum in 10 reference signal strengths, regard the corresponding cell 4 of reference signal strength 4 as first object cell；Judge whether the first coverage information of cell 4 meets the current covering demand of terminal device, if, terminal device is resided in into cell 4, otherwise, determine to remove the maximum in other reference signals outside reference signal strength 4 in 10 reference signal strengths, if remaining 9 reference signal strengths (reference signal strength 1, reference signal strength 2, reference signal strength 3 ..., reference signal strength 10) in reference signal strength 1 be maximum, regard the corresponding cell 1 of reference signal strength 1 as the second Target cell；Judge whether the second coverage information of cell 1 meets the current covering demand of terminal device, if, terminal device is resided in into cell 1, otherwise, determine to remove the maximum in other reference signals outside reference signal strength 1 in 9 reference signal strengths, if remaining 8 reference signal strengths (reference signal strength 2, reference signal strength 3 ..., reference signal strength 10) in reference signal strength 2 be maximum, regard the corresponding cell 2 of reference signal strength 2 as the 3rd Target cell；Judge whether the 3rd coverage information of cell 2 meets the current covering demand of terminal device, if so, terminal device is resided in into cell 2, otherwise, the step of determining maximum from remaining 7 reference signal strengths is returned again to, subsequent step is similar with said process, is no longer described in detail one by one herein.

In the embodiment of the present invention, terminal device can access to corresponding cell and go acquisition, for example when obtaining the coverage informations such as the second coverage information, the 3rd coverage information, the 4th coverage information, when obtaining the second coverage information, access goes to obtain the second coverage information in the second Target cell；When obtaining three coverage informations, access goes to obtain the 3rd coverage information in the 3rd Target cell；When obtaining four coverage informations, access goes to obtain the 4th coverage information in the 4th Target cell.

In order to shorten the duration that terminal device obtains other coverage informations in addition to the first coverage information, for example, second coverage information, the 3rd coverage information, the 4th coverage information etc., when terminal device obtains these other coverage informations, the second coverage information, the 3rd coverage information, the 4th coverage information etc. can be obtained in first object cell.

Therefore,, optionally, can be in the following way when terminal device obtains the second coverage information of the second Target cell in the embodiment of the present invention：

Terminal device obtains the second coverage information in first object cell；Or

Terminal device accesses the second Target cell, and the second coverage information is obtained in the second Target cell.

In the embodiment of the present invention, optionally, the first coverage information and the second coverage information include covering grade information, code modulation mode, received signal to noise ratio requirement, the one or any combination received in Signal to Interference plus Noise Ratio requirement.

In the embodiment of the present invention, terminal device can also obtain the covering grade that first object cell is supported by synchronizing sequence.

In embodiment one, terminal device is when access resides in first object cell, to refer to the first coverage information of first object cell, when the first coverage information meets the current covering demand of terminal device, just reside in first object cell, when residing in cell, if the coverage information with reference to the cell, the defect that terminal device power consumption is larger and wireless resource utility efficiency is relatively low can be avoided.

Embodiment two

As shown in fig.2, in the embodiment of the present invention, it is also proposed that a kind of method for accessing cell, the flow of this method is as follows：

Step 200：Base station determines the second Target cell, and the second Target cell is the cell outside the coverage in base station；

Step 210：Base station obtains the second coverage information of the second Target cell, and broadcasts the second coverage information.

In this embodiment, base station can obtain the second coverage information of the second Target cell outside coverage, and broadcast second coverage information, terminal device need not be moved to the base station for providing service for the second Target cell and go down to obtain the second coverage information, this improves the efficiency that terminal device accesses cell.

In the embodiment of the present invention, base station is determined before the second Target cell, in addition to following operation：

Base station determines first object cell, and first object cell is the cell within the coverage in base station；

Base station obtains the first coverage information of first object cell, and broadcasts the first coverage information.

Wherein, optionally, the first coverage information and the second coverage information include covering grade information, code modulation mode, received signal to noise ratio requirement, the one or any combination received in Signal to Interference plus Noise Ratio requirement.

Described in above-described embodiment is first to determine Target cell, then obtains the coverage information of Target cell, For example, first determining first object cell, then the first coverage information of first object cell is obtained, if the first coverage information is unsatisfactory for the covering demand of terminal device currently, then determine the second Target cell, then obtain the second coverage information of the second Target cell.Certainly, multiple Target cells are determined in actual applications or first, multiple Target cells is obtained and distinguishes corresponding coverage information, are distinguished corresponding coverage information further according to multiple Target cells of acquisition, are selected corresponding Target cell to be resident.

Embodiment three

As shown in fig.3, in the embodiment of the present invention, it is also proposed that a kind of method for accessing cell, the flow of this method is as follows：

Step 300：Terminal device obtains the signal intensity of each cell；

Step 310：Signal intensity in the signal intensity of acquisition more than or equal to signal strength threshold value is distinguished corresponding cell by terminal device, is used as at least one Target cell；

Step 320：Terminal device obtains at least one Target cell and distinguishes corresponding coverage information；

Step 330：Terminal device distinguishes corresponding coverage information according at least one Target cell of acquisition, selects corresponding Target cell to be resident.

For example, terminal device determines 3 Target cells, the corresponding coverage information of 3 Target cells is respectively：First coverage information, the second coverage information and the 3rd coverage information, terminal device selects corresponding Target cell according to the first coverage information, the second coverage information and the 3rd coverage information from 3 Target cells, and is resident in the corresponding Target cell selected.

For example：Terminal device obtains the reference signal of 10 cells, and the reference signal strength of each reference signal is as follows：Reference signal strength 1, reference signal strength 2, reference signal strength 3 ..., reference signal strength 10, reference signal strength 1 is corresponding with cell 1, reference signal strength 2 and the correspondence of cell 2, reference signal strength 3 and the correspondence of cell 3 ..., reference signal strength 10 and the correspondence of cell 10, if reference signal strength 1, reference signal strength 2, reference signal strength 5, reference signal strength 7 are all higher than reference signal strength threshold value, cell 1, cell 2, cell 5 and cell 7 are regard as Target cell； Or, if reference signal strength 4, reference signal strength 5, reference signal strength 6, reference signal strength 7 are all higher than reference signal strength threshold value, it regard cell 4, cell 5, cell 6 and cell 7 as Target cell.

In the embodiment of the present invention, the mode that terminal device obtains at least one Target cell corresponding coverage information respectively has a variety of, optionally, can be in the following way：

For any one Target cell at least one Target cell, terminal device is under any one Target cell own base station, obtains the coverage information corresponding to any one Target cell.

That is, terminal device will obtain the coverage information of which Target cell, the base station for providing service for the Target cell is moved to down acquisition, for example, cell 4, cell 5, cell 6 and cell 7 are as Target cell, when obtaining the coverage information of cell 4, it is moved to the base station for providing service for cell 4 and goes down acquisition；When obtaining the coverage information of cell 5, it is moved to the base station for providing service for cell 5 and goes down acquisition；When obtaining the coverage information of cell 6, it is moved to the base station for providing service for cell 6 and goes down acquisition；When obtaining the coverage information of cell 7, it is moved to the base station for providing service for cell 7 and goes down acquisition.

But, there is time-consuming longer, less efficient defect in said process, therefore, when terminal device obtains at least one Target cell difference corresponding coverage information, it would however also be possible to employ following manner：

Terminal device obtains at least one Target cell in first object cell and distinguishes corresponding coverage information, and first object cell is the Target cell that corresponding signal intensity is maximum at least one Target cell.

For example, cell 4, cell 5, cell 6 and cell 7 are as Target cell, the corresponding signal intensity of cell 4 is maximum in 4 Target cells, then 4 Target cells are obtained under the base station for providing service for cell 4 distinguishes corresponding coverage information.

It is of course also possible to use following manner：

Terminal device obtains at least one Target cell and distinguishes corresponding coverage information, any one cell belongs at least one Target cell under any one cell own base station.

That is, when obtaining at least one Target cell corresponding coverage information of difference, wherein under a Target cell own base station, at least one Target cell can just be obtained and distinguish corresponding coverage information, for example, cell 4, cell 5, cell 6 and cell 7 are moved to and carried for cell 4 as Target cell Distinguish corresponding coverage information for cell 4, cell 5, cell 6 and cell 7 under the base station of service, can be obtained；Or, it is moved under the base station that service is provided for cell 5, cell 4, cell 5, cell 6 and cell 7 can be obtained and distinguish corresponding coverage information；Or, it is moved under the base station that service is provided for cell 6, cell 4, cell 5, cell 6 and cell 7 can be obtained and distinguish corresponding coverage information；Or, it is moved under the base station that service is provided for cell 7, cell 4, cell 5, cell 6 and cell 7 can be obtained and distinguish corresponding coverage information.

, optionally, can be in the following way when terminal device obtains at least one Target cell difference corresponding coverage information in the embodiment of the present invention：

Terminal device determines first object cell, and obtains the coverage information of first object cell, and first object cell is the Target cell that corresponding signal intensity is maximum at least one Target cell；

Terminal device reception coverage information difference indicates that coverage information difference indicates to be used to indicate the second Target cell, and the second Target cell is the cell different from the coverage information of first object cell of corresponding coverage information at least one Target cell；

Terminal device indicates to obtain the coverage information of the second Target cell according to coverage information difference.

That is, when obtaining at least one Target cell corresponding coverage information of difference, it is not to say each Target cell will be gone to obtain corresponding coverage information, but first obtain the coverage information of first object cell, then, coverage information difference is received to indicate, indicate to determine have the coverage information of which Target cell different from the coverage information of first object cell at least one Target cell according to lid information difference, obtain the coverage information of the Target cells different from the coverage information of first object cell.

For example：Cell 4, cell 5, cell 6 and cell 7 are as Target cell, cell 4 is first object cell, obtain the coverage information of cell 4, coverage information difference is received to indicate, indicate to determine that the cell 6 in 4 Target cells is different from the coverage information of cell 4 according to lid information difference, then go to obtain the coverage information of cell 6.

From the example above it can be seen that, terminal device need not obtain cell 4, cell 5, cell 6 and cell 7 and distinguish corresponding coverage information, first obtain the coverage information of cell 4, coverage information difference indicates to determine that cell 6 is different from the coverage information of cell 4, then, the coverage information for going to obtain cell 6 is indicated according to coverage information difference.

In the embodiment of the present invention, terminal device distinguishes corresponding coverage information according at least one Target cell of acquisition, optionally, can be in the following way when selecting corresponding Target cell progress resident：

Terminal device distinguishes corresponding coverage information according at least one Target cell of acquisition, the 3rd Target cell is filtered out from least one Target cell, and reside in the 3rd Target cell.

In the embodiment of the present invention, terminal device distinguishes corresponding coverage information according at least one Target cell of acquisition, optionally, can be in the following way when filtering out three Target cells from least one Target cell：

Terminal device determines that coverage information meets at least one the 4th Target cell of covering demand from least one Target cell of acquisition distinguishes corresponding coverage information；

For any one 4th Target cell at least one the 4th Target cell, perform respectively：

Terminal device determines received signal strength of the terminal device in any one 4th Target cell, and the corresponding covering grade required less than received signal strength in any one 4th Target cell；Require to filter out maximal cover grade in being less than the covering grade of signal intensity from corresponding；

Terminal device determines the maximum being directed in the maximal cover grade that each the 4th Target cell is filtered out respectively；

Terminal device regard the 4th Target cell corresponding to maximum as the 3rd Target cell.

For example：Cell 4, cell 5, cell 6 and cell 7 are as Target cell, and the coverage information of 4 Target cells is satisfied by covering demand, for cell 4, perform following process：

Determine the received signal strength 1 of cell 4, and the corresponding covering grade required less than received signal strength 1 in cell 4：Covering grade 1, covering grade 2, covering grade 3；

Maximal cover grade is selected from covering grade 1, covering grade 2 and covering grade 3 for covering grade 3；

For cell 5, following process is performed：

Determine the received signal strength 2 of cell 5, and the corresponding covering grade required less than received signal strength 2 in cell 5：Covering grade 4, covering grade 5, covering grade 6；

Maximal cover grade is selected from covering grade 4, covering grade 5, covering grade 6 for covering grade 6；

For cell 6, following process is performed：

Determine the received signal strength 3 of cell 6, and the corresponding covering grade required less than received signal strength 3 in cell 6：Covering grade 7, covering grade 8, covering grade 9；

Maximal cover grade is selected from covering grade 7, covering grade 8, covering grade 9 for covering grade 9；

For cell 7, following process is performed：

Determine the received signal strength 4 of cell 7, and the corresponding covering grade required less than received signal strength 4 in cell 7：Covering grade 10, covering grade 11, covering grade 12；

Maximal cover grade is selected from covering grade 10, covering grade 11, covering grade 12 for covering grade 12；

The maximum in covering grade 3, covering grade 6, covering grade 9, covering grade 12 is determined again, if covering grade 3 is maximum, then it regard cell 4 as the 3rd Target cell, if covering grade 6 is maximum, then, if covering grade 9 is maximum, it regard cell 6 as cell 5 as the 3rd Target cell as the 3rd Target cell, if covering grade 12 is maximum, cell 7 is regard as the 3rd Target cell.

In the embodiment of the present invention, optionally, coverage information includes covering grade information, code modulation mode, received signal to noise ratio requirement, the one or any combination received in Signal to Interference plus Noise Ratio requirement.

In embodiment three, when terminal device resides in certain Target cell, if referring to the coverage information of the Target cell, the coverage information with reference to the Target cell, the defect that terminal device power consumption is larger and wireless resource utility efficiency is relatively low can be avoided.

Example IV

As shown in fig.4, in the embodiment of the present invention, it is also proposed that a kind of method for accessing cell, this method flow is as follows：

Step 400：Base station determines the cell for having outside base station range at least two Target cells, at least two Target cells；

Step 410：Base station obtains at least two Target cells and distinguishes corresponding coverage information；

Step 420：The Target cell of base station broadcast at least two distinguishes corresponding coverage information.

In this embodiment, base station can obtain the coverage information of at least two Target cells, and be broadcasted, and in the prior art, base station can only obtain the coverage information of a cell under coverage, and broadcasted, so, when terminal device will obtain the coverage information of multiple Target cells, it need not be respectively moved under the base station belonging to multiple Target cells difference, it can just be obtained under a base station, this improves the efficiency that terminal device obtains multiple coverage informations.

In the embodiment of the present invention, base station is determined after at least two Target cells, in addition to following operation：

Base station determines first object cell from least two Target cells, and first object cell is the Target cell that corresponding signal intensity is maximum at least two Target cells；

Base station sends coverage information difference to terminal device and indicated, coverage information difference is indicated for indicating corresponding coverage information second Target cell different from the coverage information of first object cell at least two Target cells.

Embodiment, concrete application scene given below, the process for accessing cell, make and being described in further detail, as shown in Figure 5 for a better understanding of the present invention：

Step 500：Terminal device gets 3 reference signal strengths：Reference signal strength 1, reference signal strength 2, reference signal strength 3；

Step 510：Terminal device determines that reference signal strength 3 is maximum in 3 reference signal strengths, then regard the corresponding cell 3 of reference signal strength 3 as first object cell；

Step 520：Terminal device obtains the first coverage information of cell 3；

Step 530：Terminal device judges whether the first coverage information meets the current covering demand of terminal device, if so, residing in cell 3, otherwise, performs step 540；

Step 540：Terminal device from examine determined in signal intensity 1, reference signal strength 2 reference signal strength 2 be maximum, then regard the corresponding cell of reference signal strength 2 as the second Target cell；

Step 550：Terminal device obtains the second coverage information of cell 2；

Step 560：Terminal device judges whether the second coverage information meets the current covering need of terminal device Ask, if so, residing in cell 2, otherwise, perform step 570；

Step 570：Terminal device obtains the 3rd coverage information of cell 1, judges whether the 3rd coverage information meets the current covering demand of terminal device, if so, residing in cell 1, otherwise terminates flow.

Embodiment, concrete application scene given below, the process for accessing cell, make and being described in further detail, as shown in Figure 6 for a better understanding of the present invention：

Step 600：Terminal device gets 5 reference signal strengths：Reference signal strength 1, reference signal strength 2, reference signal strength 3, reference signal strength 4, reference signal strength 5；

Step 610：Terminal device determines reference signal strength 1, reference signal strength 2, the reference signal strength threshold value of reference signal strength 3, then regard cell 1, cell 2 and cell 3 as Target cell；

Step 620：Terminal device obtains cell 1, cell 2 and cell 3 and distinguishes corresponding coverage information, determines that cell 1 and cell 2 distinguish corresponding coverage information and meet covering demand；

Step 630：Terminal device filters out cell 1 as the 3rd Target cell from cell 1 and cell 2, and resides in cell 1.

In this embodiment, optionally, can be in the following way when terminal device filters out cell 1 as three Target cells from cell 1 and cell 2：

For cell 1：Terminal device determines received signal strength of the terminal device in cell 1, and the corresponding covering grade required less than received signal strength in cell 1；Require to filter out maximal cover grade in being less than the covering grade of received signal strength from corresponding；

For cell 2：Terminal device determines received signal strength of the terminal device in cell 2, and the corresponding covering grade required less than received signal strength in cell 2；Require to filter out maximal cover grade in being less than the covering grade of received signal strength from corresponding；

Terminal device determines out the maximum in the maximal cover grade filtered out respectively for cell 1 and cell 2, and maximum respective cell 1 then regard cell 1 as the 3rd Target cell.

Refering to shown in Fig. 7 A, the embodiment of the present invention provides a kind of user equipment, and the user equipment includes receiving module 70, processing module 71 and resident module 72, wherein：

Receiving module 70, the signal intensity for obtaining each cell；

Processing module 71, for the maximum in the signal intensity that obtains receiving module 70 as first most Big signal intensity；

Processing module 71 is additionally operable to, and be will be provided with the cell for the first maximum signal that processing module 71 is obtained, is used as first object cell；

Receiving module 70 is additionally operable to, and obtains the first coverage information of the first object cell that processing module 71 is determined；

Processing module 71 is additionally operable to, and determines that the first coverage information of the acquisition of receiving module 70 meets the current covering demand of terminal device；

Resident module 72, for when processing module 71 determines that the first coverage information meets the current covering demand of terminal device, residing in first object cell.

Further, processing module 71 is additionally operable to, and when determining that the first coverage information is unsatisfactory for currently covering demand, determines the second Target cell；

Receiving module 70 is additionally operable to, and obtains the second coverage information of the second Target cell that processing module 71 is determined；

Processing module 71 is additionally operable to, and determines that the second coverage information that receiving module 70 is obtained meets current covering demand；

Resident module 72 is additionally operable to, and when processing module 71 determines that the second coverage information meets current covering demand, resides in the second Target cell.

Optionally, when processing module 71 determines the second Target cell, it is specially：

The cell of the second maximum signal is will be provided with, the second Target cell is used as；

Wherein, the residual signal intensity of the first maximum signal is removed in the signal intensity that the first residual signal intensity obtains for terminal device.

Optionally, when receiving module 70 obtains the second coverage information of the second Target cell that processing module 71 is determined, it is specially：

The second coverage information is obtained in the first object cell that processing module 71 is determined；Or

The second Target cell that processing module 71 is determined is accessed, the second coverage information is obtained in the second Target cell.

Optionally, the first coverage information and the second coverage information include covering grade information, code modulation mode, received signal to noise ratio requirement, the one or any combination received in Signal to Interference plus Noise Ratio requirement.

Refering to shown in Fig. 7 B, the embodiment of the present invention provides a kind of user equipment, and the user equipment includes receiver 700, processor 710, wherein：

Receiver 700, the signal intensity for obtaining each cell；

Processor 710, the first maximum signal is used as the maximum in the signal intensity that obtains receiver 700；

Processor 710 is additionally operable to, and be will be provided with the cell for the first maximum signal that processor 710 is obtained, is used as first object cell；

Receiver 700 is additionally operable to, and obtains the first coverage information of the first object cell that processor 710 is determined；

Processor 710 is additionally operable to, and determines that the first coverage information of the acquisition of receiver 700 meets the current covering demand of terminal device；

Processor 710 is additionally operable to, and when processor 710 determines that the first coverage information meets the current covering demand of terminal device, resides in first object cell.

It should be noted that receiver 700 can also carry out other operations performed by the receiving module 70 shown in Fig. 7 A, processor 710 can also carry out other operations performed by processing module 71 and resident module 72 shown in Fig. 7 A.

Refering to shown in Fig. 8 A, the embodiment of the present invention provides a kind of base station, and the base station includes processing module 80, receiving module 81 and sending module 82, wherein：

Processing module 80, for determining the second Target cell, the second Target cell is the cell outside the coverage in base station；

Receiving module 81, the second coverage information of the second Target cell for obtaining the determination of processing module 80；

Sending module 82, the second coverage information obtained for broadcasting reception module 81.

Further, processing module 80 is additionally operable to, and determines first object cell, and first object cell is within the coverage of base station；

Receiving module 81 is additionally operable to, and obtains the first coverage information of first object cell；

Sending module 82 is additionally operable to, the first coverage information that broadcasting reception module 81 is obtained.

Refering to shown in Fig. 8 B, the embodiment of the present invention provides a kind of base station, and the base station includes processor 800, receiver 810 and transmitter 820, wherein：

Processor 800, for determining the second Target cell, the second Target cell is the cell outside the coverage in base station；

Receiver 810, the second coverage information of the second Target cell for obtaining the determination of processor 800；

Transmitter 820, the second coverage information obtained for radio receiver 810.

It should be noted that, processor 800 can also carry out other operations performed by the processing module 80 shown in Fig. 8 A, receiver 810 can also carry out other operations performed by the receiving module 81 shown in Fig. 8 A, and transmitter 820 can also carry out other operations performed by the sending module 82 shown in Fig. 8 A.

Refering to shown in Fig. 9 A, the embodiment of the present invention provides a kind of terminal device, and the terminal device includes receiving module 90, processing module 91, wherein：

Receiving module 90, the signal intensity for obtaining each cell；

Processing module 91, the signal intensity for being more than or equal to signal strength threshold value in the signal intensity that obtains receiving module 90 distinguishes corresponding cell, is used as at least one Target cell；

Receiving module 90 is additionally operable to, and obtains the corresponding coverage information of at least one Target cell difference that processing module 91 is determined；

Processing module 91 is additionally operable to, and at least one Target cell obtained according to receiving module 90 distinguishes corresponding coverage information, selects corresponding Target cell to be resident.

Optionally, when receiving module 90 obtains at least one Target cell difference corresponding coverage information that processing module 91 is determined, it is specially：

For any one Target cell at least one Target cell, the coverage information corresponding to any one Target cell of any one Target cell acquisition is accessed；Or

At least one Target cell difference is obtained in the first object cell that processing module 91 is determined corresponding Coverage information, first object cell is the Target cell that corresponding signal intensity is maximum at least one Target cell.

Further, processing module 91 is additionally operable to, and determines first object cell, and first object cell is the Target cell that corresponding signal intensity is maximum at least one Target cell；

When receiving module 90 obtains at least one Target cell difference corresponding coverage information that processing module 91 is determined, it is specially：

The coverage information for the first object cell that processing module 91 is determined is obtained,；

Reception coverage information difference indicates that coverage information difference indicates to be used to indicate the second Target cell, and the second Target cell is the cell different from the coverage information of first object cell of corresponding coverage information at least one Target cell；

Indicated according to coverage information difference, obtain the coverage information of the second Target cell.

Optionally, at least one Target cell that processing module 91 is obtained according to receiving module 90 distinguishes corresponding coverage information, when selecting corresponding Target cell progress resident, is specially：

At least one Target cell obtained according to receiving module 90 distinguishes corresponding coverage information, filters out the 3rd Target cell at least one Target cell determined from processing module 91, and reside in the 3rd Target cell.

Optionally, at least one Target cell that processing module 91 is obtained according to receiving module 90 distinguishes corresponding coverage information, when filtering out three Target cells at least one Target cell determined from processing module 91, is specially：

During at least one Target cell obtained from receiving module 90 distinguishes corresponding coverage information, determine that coverage information meets at least one the 4th Target cell of covering demand；

Determine received signal strength of the terminal device in any one 4th Target cell, and the corresponding covering grade required less than received signal strength in any one 4th Target cell；Require to filter out maximal cover grade in being less than the covering grade for receiving covering grade from corresponding；

It regard the 4th Target cell corresponding to maximum as the 3rd Target cell.

Optionally, coverage information includes covering grade information, code modulation mode, received signal to noise ratio requirement, the one or any combination received in Signal to Interference plus Noise Ratio requirement.

Refering to shown in Fig. 9 B, the embodiment of the present invention provides a kind of terminal device, and the terminal device includes receiver 900, processor 910, wherein：

Receiver 900, the signal intensity for obtaining each cell；

Processor 910, the signal intensity for being more than or equal to signal strength threshold value in the signal intensity that obtains receiver 900 distinguishes corresponding cell, is used as at least one Target cell；

Receiver 900 is additionally operable to, and obtains the corresponding coverage information of at least one Target cell difference that processor 910 is determined；

Processor 910 is additionally operable to, and at least one Target cell obtained according to receiver 900 distinguishes corresponding coverage information, selects corresponding Target cell to be resident.

It should be noted that receiver 900 can also carry out other operations performed by the receiving module 90 shown in Fig. 9 A, processor 910 can also carry out other operations performed by the processing module 91 shown in Fig. 9 A.

Refering to shown in Figure 10 A, the embodiment of the present invention provides a kind of base station, and the base station includes processing module 100, receiving module 101 and sending module 102, wherein：

Processing module 100, for the cell for determining to have outside base station range at least two Target cells, at least two Target cells；

Receiving module 101 is used for, and obtains the corresponding coverage information of at least two Target cells difference that processing module 100 is determined；

Sending module 102, corresponding coverage information is distinguished at least two Target cells that broadcasting reception module 101 is obtained.

Further, processing module 100 is additionally operable to, and first object cell is determined at least two Target cells determined from processing module 100, and first object cell is the Target cell that corresponding signal intensity is maximum at least two Target cells；

Sending module 102 is additionally operable to, and sending coverage information difference to terminal device is indicated, coverage information difference is indicated for indicating corresponding coverage information and the covering of first object cell at least two Target cells The second different Target cell of information.

Refering to shown in Figure 10 B, the embodiment of the present invention provides a kind of base station, and the base station includes processor 1000, receiver 1001 and transmitter 1002, wherein：

Processor 1000, for the cell for determining to have outside base station range at least two Target cells, at least two Target cells；

Receiver 1001 is used for, and obtains the corresponding coverage information of at least two Target cells difference that processor 1000 is determined；

Transmitter 1002, corresponding coverage information is distinguished at least two Target cells that radio receiver 1001 is obtained.

It should be noted that, processor 1000 can also carry out other operations performed by the processing module 101 shown in Figure 10 A, receiver 1001 can also carry out other operations performed by the receiving module 101 shown in Figure 10 A, and transmitter 1002 can also carry out other operations performed by the sending module 102 shown in Figure 10 A.

In the embodiment of the present invention, it is also proposed that a kind of communication system, it is characterised in that including the terminal device as shown in Fig. 7 A or Fig. 7 B, and such as Fig. 8 A or Fig. 8 B base station.

In the embodiment of the present invention, it is also proposed that another communication system, it is characterised in that including the terminal device as shown in Fig. 9 A or Fig. 9 B, and such as Figure 10 A or Figure 10 B base station.

It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program product.Therefore, the form of the embodiment in terms of the present invention can use complete hardware embodiment, complete software embodiment or combine software and hardware.Moreover, the present invention can use the form for the computer program product implemented in one or more computer-usable storage mediums (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.) for wherein including computer usable program code.

The present invention is flow chart and/or block diagram with reference to method according to embodiments of the present invention, equipment (system) and computer program product to describe.It should be understood that can by the flow in each flow and/or square frame and flow chart and/or block diagram in computer program instructions implementation process figure and/or block diagram and/or square frame combination.These computer program instructions can be provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices to produce a machine so that logical The instruction for crossing computer or the computing device of other programmable data processing devices produces the device for being used for realizing the function of being specified in one flow of flow chart or multiple flows and/or one square frame of block diagram or multiple square frames.

These computer program instructions may be alternatively stored in the computer-readable memory that computer or other programmable data processing devices can be guided to work in a specific way, so that the instruction being stored in the computer-readable memory, which is produced, includes the manufacture of command device, the command device realizes the function of being specified in one flow of flow chart or multiple flows and/or one square frame of block diagram or multiple square frames.

These computer program instructions can be also loaded into computer or other programmable data processing devices, so that series of operation steps is performed on computer or other programmable devices to produce computer implemented processing, so that the instruction performed on computer or other programmable devices provides the step of being used to realize the function of specifying in one flow of flow chart or multiple flows and/or one square frame of block diagram or multiple square frames.

Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creative concept, then other change and modification can be made to these embodiments.So, appended claims are intended to be construed to include preferred embodiment and fall into having altered and changing for the scope of the invention.

Obviously, those skilled in the art can carry out the spirit and scope of various changes and modification without departing from the embodiment of the present invention to the embodiment of the present invention.So, if these modifications and variations of the embodiment of the present invention belong within the scope of the claims in the present invention and its equivalent technologies, then the present invention is also intended to comprising including these changes and modification.

Claims

A kind of method for accessing cell, it is characterised in that including：

Terminal device obtains the signal intensity of each cell, and regard the maximum in the signal intensity of acquisition as the first maximum signal；

The terminal device will be provided with the cell of first maximum signal, be used as first object cell；

The terminal device obtains the first coverage information of the first object cell；

When the terminal device determines that first coverage information meets the current covering demand of the terminal device, the first object cell is resided in.
The method as described in claim 1, it is characterised in that methods described also includes：

When the terminal device determines that first coverage information is unsatisfactory for the current covering demand, the second Target cell is determined, and obtain the second coverage information of second Target cell；

When the terminal device determines that second coverage information meets the current covering demand, second Target cell is resided in.
Method as claimed in claim 2, it is characterised in that the terminal device determines the second Target cell, including：

The terminal device selects the second maximum signal from the first residual signal intensity；

The terminal device will be provided with the cell of second maximum signal, be used as second Target cell；

Wherein, the residual signal intensity of first maximum signal is removed in the signal intensity that the first residual signal intensity obtains for the terminal device.
Method as claimed in claim 2 or claim 3, it is characterised in that the terminal device obtains the second coverage information of second Target cell, including：

The terminal device obtains second coverage information in the first object cell；Or

The terminal device accesses second Target cell, and second coverage information is obtained in second Target cell.
Method as described in claim any one of 1-4, it is characterised in that first coverage information Include covering grade information, code modulation mode, received signal to noise ratio requirement, the one or any combination received in Signal to Interference plus Noise Ratio requirement with second coverage information.
A kind of method for accessing cell, it is characterised in that including：

Base station determines the second Target cell, and second Target cell is the cell outside the coverage in the base station；

Base station obtains the second coverage information of the second Target cell, and broadcasts second coverage information.
Method as claimed in claim 6, it is characterised in that the base station determined before second Target cell, in addition to：

The base station determines first object cell, and the first object cell is within the coverage of the base station；

The base station obtains the first coverage information of the first object cell, and broadcasts first coverage information.
Method as claimed in claim 7, it is characterised in that first coverage information and second coverage information include covering grade information, code modulation mode, received signal to noise ratio requirement, the one or any combination received in Signal to Interference plus Noise Ratio requirement.
A kind of method for accessing cell, it is characterised in that including：

Terminal device obtains the signal intensity of each cell；

Signal intensity in the signal intensity of acquisition more than or equal to signal strength threshold value is distinguished corresponding cell by the terminal device, is used as at least one Target cell；

The terminal device obtains at least one described Target cell and distinguishes corresponding coverage information；

The terminal device at least one Target cell according to acquisition distinguishes corresponding coverage information, selects corresponding Target cell to be resident.
Method as claimed in claim 9, it is characterised in that the terminal device obtains at least one described Target cell and distinguishes corresponding coverage information, including：

For any one Target cell at least one described Target cell, terminal device access any one Target cell obtains the coverage information corresponding to any one Target cell；Or

It is corresponding that the terminal device obtains at least one Target cell difference in first object cell Coverage information, the first object cell is the Target cell that corresponding signal intensity is maximum at least one described Target cell.
Method as claimed in claim 9, it is characterised in that the terminal device obtains at least one described Target cell and distinguishes corresponding coverage information, including：

The terminal device determines first object cell, and obtains the coverage information of the first object cell, and the first object cell is the Target cell that corresponding signal intensity is maximum at least one described Target cell；

The terminal device receives coverage information difference and indicated, the coverage information difference indicates to be used to indicate the second Target cell, and second Target cell is the cell different from the coverage information of the first object cell of corresponding coverage information at least one described Target cell；

The terminal device is indicated according to coverage information difference, obtains the coverage information of second Target cell.
Method as described in claim any one of 9-11, it is characterised in that the terminal device at least one Target cell according to acquisition distinguishes corresponding coverage information, selects corresponding Target cell to be resident, including：

The terminal device at least one Target cell according to acquisition distinguishes corresponding coverage information, the 3rd Target cell is filtered out from least one described Target cell, and reside in the 3rd Target cell.
Method as claimed in claim 12, it is characterised in that the terminal device at least one Target cell according to acquisition distinguishes corresponding coverage information, and the 3rd Target cell is filtered out from least one described Target cell, including：

The terminal device determines that coverage information meets at least one the 4th Target cell of covering demand from least one Target cell described in acquisition distinguishes corresponding coverage information；

For any one 4th Target cell at least one described the 4th Target cell, perform respectively：

The terminal device determines received signal strength of the terminal device in any one 4th Target cell, and the corresponding covering grade required less than the received signal strength in any one 4th Target cell；Require that filtering out maximum in being less than the covering grade of the reception covering grade covers from corresponding Lid grade；

The terminal device determines the maximum being directed in the maximal cover grade that each the 4th Target cell is filtered out respectively；

The terminal device regard the 4th Target cell corresponding to the maximum as the 3rd Target cell.
Method as described in claim any one of 9-13, it is characterised in that the coverage information includes covering grade information, code modulation mode, received signal to noise ratio requirement, the one or any combination received in Signal to Interference plus Noise Ratio requirement.
A kind of method for accessing cell, it is characterised in that including：

Base station determines the cell for having outside the base station range at least two Target cells, at least two Target cell；

The base station obtains at least two Target cell and distinguishes corresponding coverage information；

At least two Target cells described in the base station broadcast distinguish corresponding coverage information.
Method as claimed in claim 15, it is characterised in that base station determined after at least two Target cells, in addition to：

The base station determines first object cell from least two Target cell, and the first object cell is the Target cell that corresponding signal intensity is maximum at least two Target cell；

The base station sends coverage information difference to the terminal device and indicates that the coverage information difference is indicated for indicating corresponding coverage information second Target cell different from the coverage information of the first object cell at least two Target cell.
A kind of terminal device, it is characterised in that including：

Receiving module, the signal intensity for obtaining each cell；

Processing module, the first maximum signal is used as the maximum in the signal intensity that obtains the receiving module；

The processing module is additionally operable to, and be will be provided with the cell for the first maximum signal that the processing module is obtained, is used as first object cell；

The receiving module is additionally operable to, and obtain the first object cell that the processing module is determined first is covered Lid information；

The processing module is additionally operable to, and determines that the first coverage information of the receiving module acquisition meets the current covering demand of the terminal device；

Resident module, for when the processing module determines that first coverage information meets the current covering demand of the terminal device, residing in the first object cell.
Terminal device as claimed in claim 17, it is characterised in that the processing module is additionally operable to, and when determining that first coverage information is unsatisfactory for the current covering demand, determines the second Target cell；

The receiving module is additionally operable to, and obtains the second coverage information of the second Target cell that the processing module is determined；

The processing module is additionally operable to, and determines that the second coverage information that the receiving module is obtained meets the current covering demand；

The resident module is additionally operable to, and when the processing module determines that second coverage information meets the current covering demand, resides in second Target cell.
Terminal device as claimed in claim 18, it is characterised in that when the processing module determines the second Target cell, be specially：

The second maximum signal is selected from the first residual signal intensity；

The cell of second maximum signal is will be provided with, second Target cell is used as；

Wherein, the residual signal intensity of first maximum signal is removed in the signal intensity that the first residual signal intensity obtains for the terminal device.
Terminal device as described in claim 18 or 19, it is characterised in that when the receiving module obtains the second coverage information of the second Target cell that the processing module is determined, be specially：

Second coverage information is obtained in the first object cell that the processing module is determined；Or

The second Target cell that the processing module is determined is accessed, second coverage information is obtained in second Target cell.
Terminal device as described in claim any one of 17-20, characterized in that, first coverage information and second coverage information include covering grade information, code modulation mode, received signal to noise ratio requirement, the one or any combination received in Signal to Interference plus Noise Ratio requirement.
A kind of base station, it is characterised in that including：

Processing module, for determining the second Target cell, second Target cell is the cell outside the coverage in the base station；

Receiving module, the second coverage information for obtaining the second Target cell that the processing module is determined；

Sending module, for broadcasting the second coverage information that the receiving module is obtained.
Base station as claimed in claim 22, it is characterised in that the processing module is additionally operable to, determines first object cell, and the first object cell is within the coverage of the base station；

The receiving module is additionally operable to, and obtains the first coverage information of the first object cell；

The sending module is additionally operable to, and broadcasts the first coverage information that the receiving module is obtained.
Base station as claimed in claim 23, it is characterised in that first coverage information and second coverage information include covering grade information, code modulation mode, received signal to noise ratio requirement, the one or any combination received in Signal to Interference plus Noise Ratio requirement.
A kind of terminal device, it is characterised in that including：

Receiving module, the signal intensity for obtaining each cell；

Processing module, the signal intensity for being more than or equal to signal strength threshold value in the signal intensity that obtains the receiving module distinguishes corresponding cell, is used as at least one Target cell；

The receiving module is additionally operable to, and obtains the corresponding coverage information of at least one Target cell difference that the processing module is determined；

The processing module is additionally operable to, and at least one Target cell distinguishes corresponding coverage information according to being obtained the receiving module, selects corresponding Target cell to be resident.
Terminal device as claimed in claim 25, it is characterised in that when the receiving module obtains at least one Target cell difference corresponding coverage information that the processing module is determined, be specially：

For any one Target cell at least one described Target cell, the coverage information corresponding to any one Target cell acquisition any one Target cell is accessed；Or

At least one described Target cell is obtained in the first object cell that the processing module is determined and distinguishes corresponding coverage information, the first object cell is the Target cell that corresponding signal intensity is maximum at least one described Target cell.
Terminal device as claimed in claim 25, it is characterised in that the processing module is additionally operable to, determines first object cell, and the first object cell is the Target cell that corresponding signal intensity is maximum at least one described Target cell；

When the receiving module obtains at least one Target cell difference corresponding coverage information that the processing module is determined, it is specially：

The coverage information for the first object cell that the processing module is determined is obtained,；

Reception coverage information difference indicates that the coverage information difference indicates to be used to indicate the second Target cell, and second Target cell is the cell different from the coverage information of the first object cell of corresponding coverage information at least one described Target cell；

Indicated according to coverage information difference, obtain the coverage information of second Target cell.
Terminal device as described in claim any one of 25-27, it is characterised in that the processing module at least one Target cell according to being obtained the receiving module distinguishes corresponding coverage information, when selecting corresponding Target cell progress resident, be specially：

At least one Target cell distinguishes corresponding coverage information according to being obtained the receiving module, filters out the 3rd Target cell at least one Target cell determined from the processing module, and reside in the 3rd Target cell.
Terminal device as claimed in claim 28, it is characterized in that, the processing module at least one Target cell according to being obtained the receiving module distinguishes corresponding coverage information, when filtering out three Target cells at least one Target cell determined from the processing module, is specially：

From at least one Target cell described in the receiving module is obtained distinguishes corresponding coverage information, determine that coverage information meets at least one the 4th Target cell of covering demand；

For any one 4th Target cell at least one described the 4th Target cell, perform respectively：

Determine received signal strength of the terminal device in any one 4th Target cell, and the corresponding covering grade required less than the received signal strength in any one 4th Target cell；Require to filter out maximal cover grade in being less than the covering grade of the reception covering grade from corresponding；

It is determined that the maximum in the maximal cover grade filtered out respectively for each the 4th Target cell；

It regard the 4th Target cell corresponding to the maximum as the 3rd Target cell.
Terminal device as described in claim any one of 25-29, it is characterised in that the coverage information includes covering grade information, code modulation mode, received signal to noise ratio requirement, the one or any combination received in Signal to Interference plus Noise Ratio requirement.
A kind of base station, it is characterised in that including：

Processing module, for the cell for determining to have outside the base station range at least two Target cells, at least two Target cell；

Receiving module is used for, and obtains the corresponding coverage information of at least two Target cells difference that the processing module is determined；

Sending module, corresponding coverage information is distinguished for broadcasting at least two Target cells that the receiving module is obtained.
Base station as claimed in claim 31, it is characterized in that, the processing module is additionally operable to, first object cell is determined at least two Target cells determined from the processing module, the first object cell is the Target cell that corresponding signal intensity is maximum at least two Target cell；

The sending module is additionally operable to, coverage information difference, which is sent, to the terminal device indicates that the coverage information difference is indicated for indicating corresponding coverage information second Target cell different from the coverage information of the first object cell at least two Target cell.
A kind of communication system, it is characterised in that including the terminal device as described in claim any one of 17-21, and the base station as described in claim any one of 22-24.
A kind of communication system, it is characterised in that including the terminal device as described in claim any one of 25-30, and the base station as described in claim 31 or 32.