CN102932831A - Cell searching method and device - Google Patents
Cell searching method and device Download PDFInfo
- Publication number
- CN102932831A CN102932831A CN2011102272740A CN201110227274A CN102932831A CN 102932831 A CN102932831 A CN 102932831A CN 2011102272740 A CN2011102272740 A CN 2011102272740A CN 201110227274 A CN201110227274 A CN 201110227274A CN 102932831 A CN102932831 A CN 102932831A
- Authority
- CN
- China
- Prior art keywords
- positional information
- target cell
- terminal
- described terminal
- predetermined target
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a cell searching method and a cell searching device. The cell searching method comprises the following steps of: acquiring the current position information of a terminal; acquiring the predetermined position information of a target cell; and judging whether the current position information of the terminal is matched with the predetermined position information of the target cell, and if so, triggering the terminal to search and measure the target cell. By the invention, functions of each network node in a heterogeneous network can be fully realized.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of small region search method and device.
Background technology
Long Term Evolution (LTE) system allows operator to use new and frequency spectrum widely, and than 3G network, LTE has higher data rate, lower delay and smooth IP-based framework.Next generation wireless network is by in macrocell (macro) coverage, dispose flexibly and cheaply lower powered network node, such as Microcell (micro), picocell (pico) and relaying (relay) node come the hotspot location of macrocell or the place of network coverage disappearance are replenished.
Among the LTE, the detailed process of measuring under connected state is: network side will be measured control message and send to subscriber equipment (UserEquipment, UE), wherein, comprise in this measurement control message: other association attributeses of measuring sign (MID), measuring object (MO), report configuration (RC) and measuring.UE carries out and measures and assessment according to measuring measuring object, report configuration in the control message, and generates measurement report according to measurement result and report network side.The measurement report that network side reports according to UE carries out switch decision and Inter-Cell Interference Coordination (Inter-cell Interference Coordination, ICIC), and wherein ICIC only carries out for homogeneous-frequency adjacent-domain.Wherein, measure sign measuring object and report configuration association are got up to form a complete measurement task; Measuring object has comprised measuring object attribute (such as carrier frequency, Neighboring Cell List etc.), and each carrier frequency only can configure a measuring object; Report configuration comprised the report configuration attribute (such as Event triggered or periodic report, the event definition of triggering (A1, A2 ...), report number of times etc.).
For the measurement task of Event triggered, when being equal to or greater than triggered time TTT (Time To Trigger), the duration that measuring object satisfies the entry criteria (being better than thresholding such as neighboring cell signal quality) of event just is considered to satisfy the measuring object of trigger conditions.After having measuring object to satisfy the trigger condition of event, reporting measurement reports is to network side, and the measuring object in the measurement report that reports is that the measuring amount according to network settings sorts, optimum in front.For switch decision and Inter-Cell Interference Coordination (ICIC), when satisfy when leaving condition the residential quarter of satisfying the event entry criteria, also reporting measurement reports, network side carries out switch decision and Inter-Cell Interference Coordination according to this information, reportOnleave distinguishes this characteristic in the configuration by measuring, namely when reportOnleave be TRUE, UE need to the residential quarter satisfy leave condition in reporting measurement reports, just the measurement task of event A3 has this characteristic at present.
In the current agreement, for the measurement of Serving cell, UE is carrying out always.But the prerequisite of the same frequency of UE startup network side configuration, alien frequencies, isosystem measurement is: s-measure (value of the RSRP of an appointment) is configuration not; Perhaps configured s-measure simultaneously the RSRP of Serving cell through the filtration of layer three after (be called s-Serving) lower than s-measure, namely UE is not to be subjected to s-measure control to the measurement of Serving cell.The purpose of current configuration s-measure is the frequency of to measure and reporting in order to reduce.If configured s-measure, s-Serving is equal to or higher than s-measure always simultaneously, and UE does not start the measurement task of network side configuration so.Wherein, common frequency measurement refers to the measurement task that the carrier frequency of measuring object is identical with the descending carrier frequency of Serving cell, different-frequency measure refers to that the carrier frequency of measuring object is measurement task different from the descending carrier frequency of Serving cell in the LTE system, measure above-mentioned both belonging in the system, the carrier frequency that isosystem measurement refers to measuring object is UTRA, perhaps GERAN, perhaps the carrier frequency of CDMA2000 belongs between system and measures.
Cell searching method of measurement based on the Serving cell signal quality, generally be widely used in the homogeneous network, because in homogeneous network, each residential quarter can provide similar service quality, so when the Serving cell signal is enough good, there is no need to carry out the measurement of other residential quarters, can save thus the search of terminal and measure other residential quarters and cause additive decrementation to battery.And in heterogeneous network, can have difference between the service quality that each residential quarter provides, usually can provide the throughput of focus to strengthen such as the pico residential quarter, and the macro residential quarter is more suitable for providing the residential quarter to cover.So only according to the signal quality of Serving cell, cause the search meeting of pico residential quarter slower, thereby can't obtain preferably hotspot service of pico.
Summary of the invention
Main purpose of the present invention is to provide a kind of small region search method and device, to address the above problem at least.
According to an aspect of the present invention, provide a kind of small region search method, having comprised: obtained the current residing positional information of terminal; Obtain the positional information of predetermined Target cell; Judge whether the current residing positional information of terminal mates with the positional information of the Target cell of being scheduled to, and if so, then triggering terminal is searched for and measured this Target cell.
Preferably, obtaining the current residing positional information of terminal comprises: described terminal is obtained its current residing positional information.
Preferably, described terminal is obtained its current residing positional information and comprised: described terminal adopts the localization method based on terminal, obtains its current residing positional information.
Preferably, described terminal adopts the localization method based on terminal, obtains its current residing positional information and comprises: described terminal is confirmed its current residing positional information according to the overall identification of its current resident Serving cell.
Preferably, described terminal adopts the localization method based on terminal, obtains its current residing positional information, comprising: described terminal is determined its current residing positional information according to the radio environment information of a plurality of residential quarters that comprise its Serving cell around it.
Preferably, described terminal adopts the localization method based on terminal, obtains its current residing positional information, comprising: described terminal is obtained its current residing positional information by its special-purpose localization function module.
Preferably, obtain the positional information of predetermined Target cell, comprising: described terminal is obtained the positional information of described predetermined Target cell from the positional information of the Target cell of the once resident mistake of its preservation.
Preferably, described method also comprises: described terminal records the positional information of this Target cell when residing in the Target cell that satisfies predetermined characteristic.
Preferably, described method also comprises: the predetermined characteristic of the Target cell of the needs record that described terminal reception network sends.
Preferably, described predetermined characteristic comprises: cell type feature and/or residential quarter signature identification.
Preferably, the positional information of obtaining predetermined Target cell comprises: described terminal from network side obtains the positional information of described predetermined Target cell.
Preferably, the positional information that described terminal from network side obtains described predetermined Target cell comprises: described network side is by network planning optimization, drive test or automatic network optimization, obtains the positional information of described predetermined Target cell; During macrocell around described terminal enters described predetermined Target cell, described terminal is by broadcasting or dedicated signaling, obtains the positional information of described predetermined Target cell in the current region from described network side.
Preferably, trigger that described terminal is searched for described Target cell and measurement comprises: described terminal begins described predetermined Target cell is searched for and measured when determining that the current residing positional information of described terminal is mated with the positional information of described predetermined Target cell automatically.
Preferably, trigger that described terminal is searched for described Target cell and measurement comprises: if described terminal is in connection status, described terminal is when determining that the current residing positional information of described terminal is mated with the positional information of described predetermined Target cell, report its positional information, the trigger network side configures the measurement task of described predetermined Target cell; Described terminal is measured described predetermined Target cell automatically; Perhaps, described terminal according to described measurement task, is measured described predetermined Target cell when receiving the measurement task of the described predetermined Target cell that described network side issues.
Preferably, obtain the current residing positional information of terminal and comprise: network side obtains the current residing positional information of described terminal by described terminal is positioned.
Preferably, network side obtains the current residing positional information of described terminal by described terminal is positioned, and comprising: described network side sends Location Request to described terminal, starts the location tasks of described terminal; After described terminal receives described Location Request, periodically locate the position of self, and report described network side.
Preferably, trigger described terminal described Target cell is searched for and measured, comprising: described network side indicates described terminal that described Target cell is measured.
Preferably, judge that whether the current residing positional information of described terminal comprises with the positional information coupling of described predetermined Target cell: the positional information according to the current residing positional information of described terminal and described predetermined Target cell judges that described terminal is current whether near described predetermined Target cell, if so, then determine the positional information of the current residing positional information of described terminal and described predetermined Target cell.
Preferably, positional information according to the current residing positional information of described terminal and described predetermined Target cell judges that described terminal is current whether near described predetermined Target cell, comprise: judge that the current residing position of described terminal is whether in the scope of the predictive error centered by the coordinate of described predetermined Target cell or uncertainty, if so, determine that then described terminal is current near described predetermined Target cell; Perhaps according to the current residing positional information of described terminal, obtain the current measurement radio environment information of described terminal, calculate Euler's distance of the radio environment information of the current measurement radio environment information of described terminal and described predetermined Target cell, judge that whether described Euler's distance is less than predetermined threshold value, if so, determine that then described terminal is current near described predetermined Target cell.
According to a further aspect in the invention, provide a kind of cell search apparatus, having comprised: the first acquisition module is used for obtaining the current residing positional information of terminal; The second acquisition module is for the positional information of obtaining predetermined Target cell; Judge module, be used for judging the current residing positional information of described terminal whether with the positional information coupling of described predetermined Target cell, if so, then trigger described terminal described predetermined Target cell searched for and measured.
Preferably, described device is arranged in the described terminal.
Preferably, described the first acquisition module is used for adopting the localization method based on terminal, obtains its current residing positional information; The positional information that described the second acquisition module is used for the Target cell of the once resident mistake of preserving from described terminal is obtained the positional information of described predetermined Target cell, perhaps, obtains the positional information of described predetermined Target cell from network side.
Preferably, described device is arranged in the network side.
Preferably, described the first acquisition module comprises: sending module, be used for sending Location Request to described terminal, and start the location tasks of described terminal; Receiver module is used for receiving described terminal behind the position of periodic location self, the current residing positional information of the described terminal that reports.
By the present invention, when mate with the positional information of the Target cell of being scheduled to the current position of terminal, triggering terminal is to search and the measurement of predetermined Target cell, only solved in the correlation technique signal quality according to Serving cell, cause the search meeting of residential quarter slower, thereby can't obtain the preferably problem of hotspot service, and then can give full play to the function of each network node in the heterogeneous network.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation according to the cell search apparatus of the embodiment of the invention;
Fig. 2 is the structural representation of cell search apparatus according to the preferred embodiment of the invention;
Fig. 3 is the schematic diagram that obtains according to the positional information of a kind of predetermined Target cell in the preferred embodiment of the present invention;
Fig. 4 is the flow chart according to the small region search method of the embodiment of the invention;
Fig. 5 is the schematic diagram according to a kind of heterogeneous network framework of the embodiment of the invention;
Fig. 6 is the signaling process figure of the acquisition methods of the according to the preferred embodiment of the invention current residing positional information of terminal;
Fig. 7 is triggering terminal signaling process figure that predetermined Target cell is searched for and measured according to the preferred embodiment of the invention.
Embodiment
Hereinafter also describe in conjunction with the embodiments the present invention in detail with reference to accompanying drawing.Need to prove, in the situation that do not conflict, embodiment and the feature among the embodiment among the application can make up mutually.
Fig. 1 is the structural representation according to the cell search apparatus of the embodiment of the invention, as shown in Figure 1, mainly comprises according to the cell search apparatus of the embodiment of the invention: the first acquisition module 10 is used for obtaining the current residing positional information of terminal; The second acquisition module 12 is used for obtaining the predetermined Target cell positional information of (in embodiments of the present invention, predetermined Target cell also can be called potential Target cell); Judge module 14, be connected to the first acquisition module 10 and the second acquisition module 12, be used for judging whether the current residing positional information of terminal mates with the positional information of the Target cell of being scheduled to, and if so, then triggering terminal is searched for and measured predetermined Target cell.
Wherein, predetermined Target cell can be configured according to actual conditions, for example, can be the pico residential quarter, and perhaps the residential quarter signature identification is the residential quarter of Physical Cell Identifier (Physical Cell Identity is referred to as PCI) between 50～60.
The above-mentioned cell search apparatus that provides by the embodiment of the invention, the positional information of the predetermined Target cell that the current residing positional information of terminal of the first acquisition module 10 being obtained by judge module 14 and the second acquisition module 12 obtain is mated, thereby can judge whether terminal is being toward or away from certain predetermined Target cell, when determining that the current residing positional information of terminal is mated with the positional information of the Target cell of being scheduled to, determine that terminal is near certain predetermined Target cell, do not consider the signal quality of terminal current service cell, triggering terminal is searched for and is measured this predetermined Target cell, has only avoided in heterogeneous system searching for and measuring according to the signal quality of residential quarter the problem of the function that will cause giving full play to each network node.
In a preferred implementation of the embodiment of the invention, above-mentioned cell search apparatus can be arranged in the above-mentioned terminal, namely by the spontaneous assessment to self-position of terminal, obtain the positional information of predetermined Target cell, and judge according to both relations whether terminal is toward or away from predetermined Target cell.
In the situation that above-mentioned searcher is arranged at terminal, the first acquisition module 10 can adopt the localization method based on terminal, obtains its current residing positional information; For example, terminal is confirmed its current residing positional information according to the overall identification of its current resident Serving cell; Perhaps, terminal is determined its current residing positional information according to the signal quality of a plurality of residential quarters that comprise its Serving cell around it; Perhaps, terminal is obtained its current residing positional information by its special-purpose localization function module (for example, the special-purpose localization function module of GPS or A-GPS).
In a preferred implementation of the embodiment of the invention, obtain the positional information of predetermined Target cell the positional information of the Target cell of the once resident mistake that the second acquisition module 12 can be preserved from terminal.In this preferred implementation, terminal can be kept at the positional information of the Target cell of resident mistake once in its memory, and this positional information of preservation can be called footprint (footprint).Preferably, because the finite capacity of terminal memory, therefore, terminal can be set only preserve the positional information of the Target cell that satisfies specific characteristic, more preferably, terminal can be set only preserve the positional information that recently resident N (N is for more than or equal to 1 integer, specifically can according to the size setting of the memory of terminal) satisfies the Target cell of specific characteristic.Wherein, specific characteristic can be the cell type of appointment or be the residential quarter signature identification of appointment, and for example, cell type is that pico residential quarter or residential quarter signature identification are the residential quarter of Physical Cell Identifier between 50～60.In this preferred implementation, preferably, cell type feature or the residential quarter signature identification of terminal record footprint can be notified to terminal by the mode of broadcasting or dedicated signaling, terminal is when receiving new cell type feature and residential quarter signature identification, can delete original footprint information, from newly beginning renewal.Wherein, the positional information among the footprint of terminal record includes but not limited to following content: the sign of the frequency of this residential quarter, (overall situation) cell ID, Physical Cell Identifier, adjacent macro cell or same covering macrocell and the wireless signal measured value (comprising the RSRP/RSRQ/ path loss) of these macrocells or GPS/A-GPS etc. are based on the positioning position information of terminal.
In another preferred implementation of the embodiment of the invention, the second acquisition module 12 also can obtain from network side the positional information of predetermined Target cell.For example, network side is by the mode of the network planning and optimization, drive test (MDT) or automatic network optimization (SON), obtain in advance the positional information of predetermined Target cell, for example, the resident terminal to report positional information of Target cell of crossing is to the networking, the specifying information content can with above-mentioned footprint in describe identical, the positional information of network side preservation terminal to report.When the macrocell around the terminal target approach residential quarter, for example, with the macrocell that covers or the macrocell of co-located district (LA)/tracking area (TA), terminal can obtain by the mode of broadcasting or dedicated signaling the positional information of Target cell predetermined in this zone.Compare the execution mode among the footprint that above-mentioned positional information with predetermined Target cell is kept at terminal, this preferred implementation can reduce the memory spending of terminal.
In another preferred implementation of the embodiment of the invention, said apparatus also is arranged in the network side.In this preferred implementation, this device can be measured predetermined Target cell by sending the indication information triggering terminal to terminal.
In the situation that above-mentioned cell search apparatus is arranged on network side, preferably, the first acquisition module 10 can obtain the current residing positional information of terminal based on existing position fixing process, for example, the first acquisition module 10 comprises: sending module, be used for sending Location Request to described terminal, start the location tasks of described terminal; Receiver module is used for receiving described terminal behind the position of periodic location self, the current residing positional information of the described terminal that reports.
In the preferred embodiment of the present invention, above-mentioned the first acquisition module 10 and the second acquisition module 12 can be unified setting, as shown in Figure 2, cell search apparatus in the preferred embodiment comprises: location-based trigger module 20 and Cell searching and measurement module 30 (being arranged in the terminal), wherein, location-based trigger module 20 comprises: current location evaluation module 200 (being equivalent to the first acquisition module 10 and the second acquisition module 12 among Fig. 1) and adjacent cells judge module 202 (being equivalent to the judge module 14 among Fig. 1), wherein, current location evaluation module 200 is for assessment of the positional information of the current positional information of terminal and predetermined Target cell, adjacent cells judge module 202 is used for judging according to the positional information of the current positional information of terminal and predetermined Target cell whether terminal is toward or away from predetermined Target cell, if so, then triggering cell search and 30 pairs of predetermined Target cells of measurement module are searched for and are measured.
Wherein, location-based trigger module 20 can be arranged on end side, initiated by end side, in this case, current location evaluation module 200 can be determined the current residing positional information of terminal by various localization methods based on terminal, for the positional information of predetermined Target cell, current location evaluation module 200 can obtain from the footprint that terminal is preserved, as shown in Figure 3.Perhaps, current location evaluation module 200 also can obtain from network side the positional information of predetermined Target cell, and is concrete similar to above-mentioned preferred implementation, do not repeat them here.
Fig. 4 is the flow chart according to the small region search method of the embodiment of the invention, and as shown in Figure 4, this small region search method mainly may further comprise the steps:
Step S402 obtains the current residing positional information of terminal;
Step S404 obtains the positional information of predetermined Target cell;
Step S406 judges whether the current residing positional information of terminal mates with the positional information of the Target cell of being scheduled to, and if so, then triggering terminal is searched for and measured predetermined Target cell.
The said method that provides by the embodiment of the invention, when mate with the positional information of the Target cell of being scheduled to the current position of terminal, triggering terminal is to search and the measurement of predetermined Target cell, only solved in the correlation technique signal quality according to Serving cell, cause the search meeting of residential quarter slower, thereby can't obtain the preferably problem of hotspot service, and then can give full play to the function of each network node in the heterogeneous network.
In embodiments of the present invention, obtaining of the current residing positional information of terminal can also can be initiated by network side by the spontaneous initiation of terminal, below is described respectively.
(1) obtaining by the current residing positional information of terminal initiating terminal
In a preferred implementation of the embodiment of the invention, terminal can adopt various localization methods based on terminal, obtains its current residing positional information.For example, terminal can according to the overall identification of its current resident Serving cell, be confirmed its current residing positional information; Perhaps, terminal can according to radio environment information such as the signal quality (for example, RSRP or RSRQ etc.) of a plurality of residential quarters that comprise its Serving cell around it or path loss information, be determined its current residing positional information; Perhaps, terminal also can be passed through its special-purpose localization function module (for example, GPS or A-GPS module), obtains its current residing positional information.
Terminal can be kept at the positional information of the Target cell of resident mistake once in the memory, be called as footprint (footprint), therefore, positional information for predetermined Target cell, in a preferred implementation of the embodiment of the invention, terminal can be obtained the positional information of predetermined Target cell from the footprint that preserves.In this preferred implementation, because therefore the terminal memory finite capacity, can arrange and only preserve the Target cell that satisfies predetermined characteristic, terminal records the positional information of this Target cell when residing in the Target cell that satisfies predetermined characteristic.More preferably, terminal can only be preserved N Target cell that satisfies predetermined characteristic of nearest resident mistake.Wherein, predetermined characteristic can be the cell type of appointment or be the residential quarter signature identification of appointment, for example, cell type is that pico residential quarter or residential quarter signature identification are the residential quarter of Physical Cell Identifier (physical cell identity) between 50～60.The cell type feature of record footprint and residential quarter signature identification can be notified to terminal by the mode of broadcasting or dedicated signaling, terminal is when receiving new cell type feature and residential quarter signature identification, can delete original footprint information, from newly beginning renewal.Wherein, preferably, the positional information that is recorded among the footprint includes but not limited to following content: the sign of the frequency of this residential quarter, (overall situation) cell ID, Physical Cell Identifier, adjacent macro cell or same covering macrocell and the wireless signal measured value (comprising the RSRP/RSRQ/ path loss) of these macrocells or GPS/A-GPS etc. are based on the positioning position information of terminal.
In another preferred implementation of the embodiment of the invention, terminal also can be obtained from network side the positional information of described predetermined Target cell.In this preferred implementation, network side can be by the mode of network rule and optimization, drive test (MDT) or automatic network optimization (SON), obtain in advance the positional information of potential target residential quarter, such as, the resident terminal to report positional information of Target cell of crossing is to network side, this positional information of network side preservation, the i.e. positional information of Target cell.Wherein, terminal to report to the specifying information content in the positional information of network side can with above-mentioned footprint in record identical.When the macrocell around the terminal target approach residential quarter, for example, with the macrocell that covers or the macrocell of co-located district (LA)/tracking area (TA), terminal can obtain by the mode of broadcasting or dedicated signaling the positional information of Target cell predetermined in this zone.For example, in heterogeneous network framework shown in Figure 5, when terminal resides in pico 1 or pico 2 residential quarter, terminal can report network side with the positional information of pico 1 or pico 2 residential quarters, when terminal enters the coverage of pico 1 residential quarter under the macrocell A covering, terminal is obtained the positional information of the predetermined Target cell in this zone, the i.e. positional information of pico 1 residential quarter from broadcasting or dedicated signaling.The positional information of comparing above-mentioned predetermined Target cell is kept at the execution mode among the footprint, and this preferred implementation can reduce the memory spending of terminal.
(2) obtaining by the current residing positional information of network side initiating terminal
In a preferred implementation of the embodiment of the invention, obtaining of the current residing positional information of network side initiating terminal can realize based on existing position fixing process, be network side by described terminal is positioned, obtain the current residing positional information of described terminal.
In a preferred implementation of the embodiment of the invention, network side can send Location Request to terminal, starts the location tasks of terminal; Terminal is periodically located the position of self after receiving Location Request, and reports network side.Take the LTE system as example, mainly contain three class processes in the location: stationkeeping ability acquisition process, supplementary acquisition process and locating information acquisition process, wherein, the first two process is for the obtaining of assist location information, and is optional process.After Network Capture terminal current location, network can judge whether terminal approaches predetermined Target cell, receiving predetermined Target cell if judge terminal, network can be searched for and measure predetermined Target cell by indicating terminal, for example, be the measurement task of the predetermined Target cell of terminal configuration.
Preferably, can also increase the location tasks that a kind of Event triggered reports newly, the current location of reporting terminal, as shown in Figure 6, in a preferred implementation of the embodiment of the invention, network side can obtain the current residing positional information of terminal by following steps:
Step S601, network (wireless access network side NW) is initiated stationkeeping ability to terminal and is obtained request;
Step S602, terminal provides the stationkeeping ability of terminal to network;
According to the stationkeeping ability of terminal and the method for the definite location of location requirement (for example, need to reduce the power consumption of terminal in considering to locate, and positioning accuracy can be too high).
Step S603 network basedly need to send positioning auxiliary information to terminal;
Wherein, above-mentioned steps S601-step S603 is optional step.
Step S604, network (wireless access network side) is initiated Location Request to terminal, require terminal reporting orientation information near assigned address the time, wherein can comprise: the positional information of the method for location, location Qos and the Target cell that at least one is predetermined etc.;
Step S605, after terminal was received Location Request, beginning is periodic measured and the location;
Step S606, the distance between terminal judges self-position and the above-mentioned predetermined Target cell position determines that both mate;
Step S607, terminal reports its positional information to network.
In the preferred implementation of the embodiment of the invention, terminal or network side can according to the positional information of the current residing position of terminal and predetermined Target cell judge terminal current be to be toward or away from predetermined Target cell, thereby judge whether the current residing positional information of terminal and the positional information of the Target cell of being scheduled to mate.For example, can determine according to location coordinate information for localization methods such as GPS/A-GPS, if in the specification error or the scope of uncertainty of the current residing position of terminal centered by the coordinate of predetermined Target cell, determine then that terminal is current to approach predetermined Target cell.Perhaps, for the wireless environment positional information according to the wireless signal measured value mode of Serving cell and adjacent area, Euler's distance between the radio environment information under the predetermined Target cell of can computing terminal current measurement radio environment information and preservation, the information that is n residential quarter can be thought n-dimensional space, the measured value of n residential quarter is the coordinate of n dimension, when Euler's distance of the radio environment information of the predetermined Target cell of terminal current wireless environmental information and preservation during less than predetermined threshold value, determine that terminal is current to approach predetermined Target cell.
In a preferred implementation of the embodiment of the invention, when terminal judges goes out current terminal near predetermined Target cell the time, terminal can begin predetermined Target cell is searched for and measured automatically, perhaps when terminal is in connection (CONNECT) state, terminal can be passed through reporting orientation information, indication is toward or away from one or several predetermined Target cell, thus the measurement task of the Target cell that the trigger network configuration is scheduled to.This moment, terminal can be measured predetermined Target cell automatically, perhaps also can measure predetermined Target cell according to the indication of network, and do not consider the signal quality of current service cell, when the signal of predetermined Target cell satisfies reselection conditions under the IDLE, terminal can be rushed and be channeled to the potential target residential quarter; Perhaps during the trigger event under the connected state, the terminal to report measurement report.
When terminal judges goes out that terminal is current to be left near the predetermined Target cell, terminal can stop the measurement to predetermined Target cell automatically, perhaps measure according to normal measurement rules (for example, whether the signal quality of inspection Serving cell satisfies s-serving).Perhaps terminal also can left predetermined Target cell by reporting orientation information or indication information informing network terminal, and network can be reshuffled, to return to measurement configuration under normal circumstances.
Fig. 7 is the signaling process figure that triggering terminal was searched for and measured predetermined Target cell when terminal was in connection status in the preferred embodiment of the present invention, as shown in Figure 7, mainly may further comprise the steps:
Step S701, terminal is determined currently be toward or away from one or several predetermined pico residential quarter;
Step S702, terminal sends indication to network (Radio Access Network side NW), the sign of the pico residential quarter that indication is approaching;
Step S703, network sends the RRC configuration to terminal, issues the measurement task of predetermined pico residential quarter to terminal;
Step S704, terminal is measured predetermined pico residential quarter according to the indication of network;
Step S705, terminal is to the network reporting measurement reports.
From above description, can find out, in embodiments of the present invention, by the current residing positional information of terminal and the positional information of the Target cell of being scheduled to are mated, thereby can judge whether terminal is being toward or away from certain predetermined Target cell, when determining that the current residing positional information of terminal is mated with the positional information of the Target cell of being scheduled to, determine that terminal is near certain predetermined Target cell, do not consider the signal quality of terminal current service cell, triggering terminal is searched for and is measured this predetermined Target cell, has only avoided in heterogeneous system searching for and measuring according to the signal quality of residential quarter the problem of the function that will cause giving full play to each network node.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and be carried out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (24)
1. a small region search method is characterized in that, comprising:
Obtain the current residing positional information of terminal;
Obtain the positional information of predetermined Target cell;
Judge the current residing positional information of described terminal whether with the positional information coupling of described predetermined Target cell, if so, then trigger described terminal described Target cell searched for and measured.
2. method according to claim 1 is characterized in that, obtain the current residing positional information of terminal and comprise: described terminal is obtained its current residing positional information.
3. method according to claim 2 is characterized in that, described terminal is obtained its current residing positional information and comprised: described terminal adopts the localization method based on terminal, obtains its current residing positional information.
4. method according to claim 3, it is characterized in that, described terminal adopts the localization method based on terminal, obtains its current residing positional information and comprises: described terminal is confirmed its current residing positional information according to the overall identification of its current resident Serving cell.
5. method according to claim 3, it is characterized in that, described terminal adopts the localization method based on terminal, obtain its current residing positional information, comprise: described terminal is determined its current residing positional information according to the radio environment information of a plurality of residential quarters that comprise its Serving cell around it.
6. method according to claim 3 is characterized in that, described terminal adopts the localization method based on terminal, obtains its current residing positional information, comprising: described terminal is obtained its current residing positional information by its special-purpose localization function module.
7. method according to claim 2 is characterized in that, obtains the positional information of predetermined Target cell, comprising: described terminal is obtained the positional information of described predetermined Target cell from the positional information of the Target cell of the once resident mistake of its preservation.
8. method according to claim 7 is characterized in that, described method also comprises: described terminal records the positional information of this Target cell when residing in the Target cell that satisfies predetermined characteristic.
9. method according to claim 8 is characterized in that, described method also comprises: the predetermined characteristic of the Target cell of the needs record that described terminal reception network sends.
10. method according to claim 8 is characterized in that, described predetermined characteristic comprises: cell type feature and/or residential quarter signature identification.
11. method according to claim 2 is characterized in that, the positional information of obtaining predetermined Target cell comprises: described terminal from network side obtains the positional information of described predetermined Target cell.
12. method according to claim 11 is characterized in that, the positional information that described terminal from network side obtains described predetermined Target cell comprises:
Described network side is by network planning optimization, drive test or automatic network optimization, obtains the positional information of described predetermined Target cell;
During macrocell around described terminal enters described predetermined Target cell, described terminal is by broadcasting or dedicated signaling, obtains the positional information of described predetermined Target cell in the current region from described network side.
13. each described method in 12 according to claim 2, it is characterized in that, trigger that described terminal is searched for described Target cell and measurement comprises: described terminal begins described predetermined Target cell is searched for and measured when determining that the current residing positional information of described terminal is mated with the positional information of described predetermined Target cell automatically.
14. each described method in 12 is characterized in that according to claim 2, triggers that described terminal is searched for described Target cell and measurement comprises:
If described terminal is in connection status, described terminal is when determining that the current residing positional information of described terminal is mated with the positional information of described predetermined Target cell, report its positional information, the trigger network side configures the measurement task of described predetermined Target cell;
Described terminal is measured described predetermined Target cell automatically; Perhaps, described terminal according to described measurement task, is measured described predetermined Target cell when receiving the measurement task of the described predetermined Target cell that described network side issues.
15. method according to claim 1 is characterized in that, obtains the current residing positional information of terminal and comprises: network side obtains the current residing positional information of described terminal by described terminal is positioned.
16. method according to claim 15 is characterized in that, network side obtains the current residing positional information of described terminal by described terminal is positioned, and comprising:
Described network side sends Location Request to described terminal, starts the location tasks of described terminal;
After described terminal receives described Location Request, periodically locate the position of self, and report described network side.
17. according to claim 15 or 16 described methods, it is characterized in that, trigger described terminal described Target cell is searched for and measured, comprising: described network side indicates described terminal that described Target cell is measured.
18. each described method in 12,15 and 16 is characterized in that according to claim 1, judges that whether the current residing positional information of described terminal comprises with the positional information coupling of described predetermined Target cell:
Positional information according to the current residing positional information of described terminal and described predetermined Target cell judges that described terminal is current whether near described predetermined Target cell, if so, then determine the positional information of the current residing positional information of described terminal and described predetermined Target cell.
19. method according to claim 18 is characterized in that, judges that according to the positional information of the current residing positional information of described terminal and described predetermined Target cell described terminal is current whether near described predetermined Target cell, comprising:
Judge that the current residing position of described terminal whether in the scope of the predictive error centered by the coordinate of described predetermined Target cell or uncertainty, if so, determines that then described terminal is current near described predetermined Target cell; Perhaps
According to the current residing positional information of described terminal, obtain the current measurement radio environment information of described terminal, calculate Euler's distance of the radio environment information of the current measurement radio environment information of described terminal and described predetermined Target cell, judge that whether described Euler's distance is less than predetermined threshold value, if so, determine that then described terminal is current near described predetermined Target cell.
20. a cell search apparatus is characterized in that, comprising:
The first acquisition module is used for obtaining the current residing positional information of terminal;
The second acquisition module is for the positional information of obtaining predetermined Target cell;
Judge module, be used for judging the current residing positional information of described terminal whether with the positional information coupling of described predetermined Target cell, if so, then trigger described terminal described predetermined Target cell searched for and measured.
21. device according to claim 20 is characterized in that, described device is arranged in the described terminal.
22. device according to claim 21 is characterized in that,
Described the first acquisition module is used for adopting the localization method based on terminal, obtains its current residing positional information;
The positional information that described the second acquisition module is used for the Target cell of the once resident mistake of preserving from described terminal is obtained the positional information of described predetermined Target cell, perhaps, obtains the positional information of described predetermined Target cell from network side.
23. device according to claim 20 is characterized in that, described device is arranged in the network side.
24. device according to claim 23 is characterized in that, described the first acquisition module comprises:
Sending module is used for sending Location Request to described terminal, starts the location tasks of described terminal;
Receiver module is used for receiving described terminal behind the position of periodic location self, the current residing positional information of the described terminal that reports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102272740A CN102932831A (en) | 2011-08-09 | 2011-08-09 | Cell searching method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102272740A CN102932831A (en) | 2011-08-09 | 2011-08-09 | Cell searching method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102932831A true CN102932831A (en) | 2013-02-13 |
Family
ID=47647505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102272740A Pending CN102932831A (en) | 2011-08-09 | 2011-08-09 | Cell searching method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102932831A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104349270A (en) * | 2013-08-01 | 2015-02-11 | 中国移动通信集团公司 | Small cell accessing method, apparatus and system |
| CN105554695A (en) * | 2014-11-04 | 2016-05-04 | 中兴通讯股份有限公司 | Method for realizing position confirmation, base station, and terminal |
| CN107018519A (en) * | 2016-01-27 | 2017-08-04 | 上海大唐移动通信设备有限公司 | A kind of automatic road measuring method, device and front end road measuring device |
| CN112788703A (en) * | 2021-02-23 | 2021-05-11 | 惠州Tcl移动通信有限公司 | Cell residence control method, terminal and storage medium |
| CN115379410A (en) * | 2022-08-22 | 2022-11-22 | 中国电信股份有限公司 | Interference cell determination method, interference processing method, device and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101742580A (en) * | 2008-11-11 | 2010-06-16 | 华为技术有限公司 | Cell reselecting method and device |
| WO2011002370A1 (en) * | 2009-07-03 | 2011-01-06 | Telefonaktiebolaget L M Ericsson (Publ) | Access network discovery and selection function, andsf, node distributing closed subscriber group, csg, information |
| CN102056256A (en) * | 2009-11-05 | 2011-05-11 | 中兴通讯股份有限公司 | Switching capability processing method, device and system |
-
2011
- 2011-08-09 CN CN2011102272740A patent/CN102932831A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101742580A (en) * | 2008-11-11 | 2010-06-16 | 华为技术有限公司 | Cell reselecting method and device |
| WO2011002370A1 (en) * | 2009-07-03 | 2011-01-06 | Telefonaktiebolaget L M Ericsson (Publ) | Access network discovery and selection function, andsf, node distributing closed subscriber group, csg, information |
| CN102056256A (en) * | 2009-11-05 | 2011-05-11 | 中兴通讯股份有限公司 | Switching capability processing method, device and system |
Non-Patent Citations (1)
| Title |
|---|
| HUAWEI,HISILICON: "Consideration on the SI of HetNet mobility improvement for LTE", 《3GPP TSG-RAN WG2 MEETING #74》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104349270A (en) * | 2013-08-01 | 2015-02-11 | 中国移动通信集团公司 | Small cell accessing method, apparatus and system |
| CN104349270B (en) * | 2013-08-01 | 2018-09-07 | 中国移动通信集团公司 | A kind of cut-in method of cell, device and system |
| CN105554695A (en) * | 2014-11-04 | 2016-05-04 | 中兴通讯股份有限公司 | Method for realizing position confirmation, base station, and terminal |
| CN107018519A (en) * | 2016-01-27 | 2017-08-04 | 上海大唐移动通信设备有限公司 | A kind of automatic road measuring method, device and front end road measuring device |
| CN112788703A (en) * | 2021-02-23 | 2021-05-11 | 惠州Tcl移动通信有限公司 | Cell residence control method, terminal and storage medium |
| WO2022178938A1 (en) * | 2021-02-23 | 2022-09-01 | 惠州Tcl移动通信有限公司 | Cell camping control method, terminal, and storage medium |
| CN115379410A (en) * | 2022-08-22 | 2022-11-22 | 中国电信股份有限公司 | Interference cell determination method, interference processing method, device and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11343691B2 (en) | Radio communication system, radio terminal, radio network, radio communication method and program | |
| EP2373093B1 (en) | Method and device for configuring neighbor cell | |
| RU2640815C2 (en) | Improved evaluation of cellular network coverage by measuring with user equipment (ue) in standby mode | |
| CN101459985B (en) | Method and device for adjacent information transmission in wireless communication system | |
| US8457637B2 (en) | Mobile communication method, mobile station, and radio base station | |
| CN103765953A (en) | Method and apparatus providing multi-level proximity indication and small cell discovery | |
| CN103404201A (en) | Method for small cell discovery in heterogeneous network | |
| CN101330702B (en) | Starting method and apparatus for terminal equipment to measure limited network | |
| CN102238581B (en) | Method and device for determining mobility state of user equipment (UE) | |
| CN103621159A (en) | Method and apparatuses for accounting of cell change information | |
| CN104521257A (en) | Method for reporting mobility information in wireless communication system and apparatus for supporting same | |
| KR20160022392A (en) | Network entity, communication device, mobile communication device and method thereof | |
| CN102457890A (en) | Method and system for realizing drive test | |
| CN101867966A (en) | Method for reporting measurement report of closed user group cell | |
| US8442537B2 (en) | Mobility management method for use in cellular mobile communication system | |
| CN104054373A (en) | Base station, communication system, communication method, and program recording medium | |
| CN102932831A (en) | Cell searching method and device | |
| WO2015176996A1 (en) | Adaptation of scell configuration | |
| KR101781765B1 (en) | Method, system and equipment for reporting mobile information | |
| US20220095143A1 (en) | ANR Configuration, Measurements and Reporting for Power Limited Devices | |
| CN108141807A (en) | Communication system and control method | |
| CN103813376A (en) | Signal measurement device and signal measurement method | |
| US20140357274A1 (en) | Cell handovers | |
| US9538447B2 (en) | Methods and apparatus for device monitoring | |
| CN102196474B (en) | Detect the method and system that disturb subscriber equipment closed signed user group cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130213 |