CN104754607A - Method for regularly tracking adjacent cell, and user equipment (UE) - Google Patents
Method for regularly tracking adjacent cell, and user equipment (UE) Download PDFInfo
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- CN104754607A CN104754607A CN201310727098.6A CN201310727098A CN104754607A CN 104754607 A CN104754607 A CN 104754607A CN 201310727098 A CN201310727098 A CN 201310727098A CN 104754607 A CN104754607 A CN 104754607A
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- adjacent area
- serving cell
- search window
- powerful path
- timing tracking
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
Embodiments of the invention disclose a method for regularly tracking an adjacent cell, and user equipment (UE). The method comprises the steps that the UE acquires position offset of a strongest signal transmission path of a service cell, wherein the UE resides in the service cell at present; and the UE adjusts the position of a search window used in regular tracking of the adjacent cell according to the position offset of the strongest signal transmission path of the service cell, so that the search window used in regular tracking of the adjacent cell covers the position of the strongest signal transmission path of the adjacent cell. While hardware resources are not increased, the performance of regular tracking of the adjacent cell can be improved, and the power consumption of regular tracking of the adjacent cell can be reduced.
Description
Technical field
The embodiment of the present invention relates to mobile communication technology field, particularly relates to a kind of method and the UE that adjacent area are carried out to timing tracking.
Background technology
The downstream signal that NodeB launches is through different path transmissions to subscriber equipment (UserEquipment, UE), and the path that Signal transmissions is the strongest is called " most powerful path ", and UE follows the tracks of by finding most powerful path to realize cell timing.But, due to the change of wireless channel and the movement of UE, cause the position of most powerful path to swing, i.e. footpath drift.
In order to realize the timing tracking to community, in prior art, UE generally can use 3 search windows to carry out timing tracking to Serving cell, suppose that the search width of a search window is 64 chips (chip), namely can cover the footpath drift of 192chip, use 1 search window to carry out timing tracking to adjacent area, namely timing tracking scope in adjacent area only has 64chip, comparatively speaking, the tracking performance of adjacent area is poorer than the tracking performance of Serving cell.In actual moving process, UE can first use 3 search windows to carry out timing tracking to Serving cell, and then uses 1 search window to carry out timing tracking to each adjacent area, starts the tasks such as energy measurement after timing tracking completes.
And UE standby time, in order to save power consumption, UE can use 32K clock as timer clock, and the precision of 32K clock self is not high, introduces 32K clock-timed and brings larger timing offset simultaneously, directly causes cell timing tracking performance to reduce.Especially for adjacent area, itself is just poor to its timing tracking performance, so, the timing tracking performance of adjacent area can be caused to worsen further.In addition, add the decline of wireless channel, the movement of UE, finally may cause adjacent area timing tracking failure.When adjacent area timing tracking unsuccessfully can cause or load too high bad at the communication quality of Serving cell, UE gravity treatment cannot produce the phenomenon of call drop to adjacent area, this will have a strong impact on the subjective feeling of user.
A kind of method promoting adjacent area timing tracking performance of current existence is: increase baseband processing unit, such as, increase the quantity of the search window of adjacent area, but thereupon, can increase the direct consumption of hardware resource, and can increase the timing tracking power consumption of adjacent area.Therefore, be necessary to provide a kind of new method to solve the problem.
Summary of the invention
Embodiments provide a kind of method and the UE that adjacent area are carried out to timing tracking, adjacent area timing tracking power consumption can be reduced, promote adjacent area timing tracking performance.
Embodiment of the present invention first aspect provides a kind of method of adjacent area being carried out to timing tracking, comprising:
User equipment (UE) obtains the position offset of the most powerful path of Serving cell, and described Serving cell is the current resident community of described UE;
Described UE carries out the position of the search window used in the process of timing tracking to adjacent area according to the position offset adjustment of the most powerful path of described Serving cell, cover the position of the most powerful path of described adjacent area to make the described search window carrying out using in the process of timing tracking to adjacent area.
In conjunction with the first aspect of the embodiment of the present invention, in the first execution mode of embodiment of the present invention first aspect, described UE carries out the method for the position of the search window used in the process of timing tracking to adjacent area according to the position offset adjustment of the most powerful path of described Serving cell, be specially:
Described UE judges whether the position offset of the most powerful path of described Serving cell is more than or equal to default threshold value;
If the position offset of the most powerful path of described Serving cell is more than or equal to described default threshold value, then adjust the position of described adjacent area being carried out to the search window used in the process of timing tracking;
If the position offset of the most powerful path of described Serving cell is less than described default threshold value, then do not adjust the position of described adjacent area being carried out to the search window used in the process of timing tracking.
In conjunction with the first execution mode of embodiment of the present invention first aspect, in the second execution mode of embodiment of the present invention first aspect, if the position offset of the most powerful path of described Serving cell is more than or equal to described default threshold value, then adjust the position of described adjacent area being carried out to the search window used in the process of timing tracking, be specially:
If the position offset of the most powerful path of described Serving cell is more than or equal to default threshold value, then by described position of described adjacent area being carried out to the search window used in the process of timing tracking, offset described position offset according to the offset direction of the most powerful path of described Serving cell.
In conjunction with the first aspect of the embodiment of the present invention, or the first execution mode of first aspect, or the second execution mode of first aspect, in the third execution mode of embodiment of the present invention first aspect, the quantity of described adjacent area being carried out to the search window used in the process of timing tracking is less than the quantity of described Serving cell being carried out to the search window used in the process of timing tracking.
Embodiment of the present invention second aspect provides a kind of user equipment (UE), comprising:
Acquiring unit, for obtaining the position offset of the most powerful path of Serving cell, described Serving cell is the current resident community of described UE;
Processing unit, position offset for the most powerful path according to described Serving cell adjusts the position of adjacent area being carried out to the search window used in the process of timing tracking, covers the position of the most powerful path of described adjacent area to make the described search window carrying out using in the process of timing tracking to adjacent area.
In conjunction with the second aspect of the embodiment of the present invention, in the first execution mode of embodiment of the present invention second aspect, described processing unit specifically for:
Judge whether the position offset of the most powerful path of described Serving cell is more than or equal to default threshold value;
If the position offset of the most powerful path of described Serving cell is more than or equal to described default threshold value, then the position of the search window used in the process of timing tracking is carried out in described processing unit adjustment to described adjacent area;
If the position offset of the most powerful path of described Serving cell is less than described default threshold value, then described processing unit does not adjust the position of described adjacent area being carried out to the search window used in the process of timing tracking.
In conjunction with the first execution mode of embodiment of the present invention second aspect, in the second execution mode of embodiment of the present invention second aspect, the method of the position of the search window used in the process of timing tracking is carried out in described processing unit adjustment to described adjacent area, be specially:
The position of search window that described processing unit will carry out using in the process of timing tracking to described adjacent area, offsets described position offset according to the offset direction of the most powerful path of described Serving cell.
In conjunction with the second aspect of the embodiment of the present invention, or the first execution mode of second aspect, or the second execution mode of second aspect, in the third execution mode of embodiment of the present invention second aspect, the quantity of described adjacent area being carried out to the search window used in the process of timing tracking is less than the quantity of described Serving cell being carried out to the search window used in the process of timing tracking.
As can be seen from the above technical solutions, the embodiment of the present invention has the following advantages:
In the embodiment of the present invention, UE obtains the position offset of the most powerful path of Serving cell, and Serving cell is the current resident community of UE; UE carries out the position of the search window used in the process of timing tracking to adjacent area according to the position offset adjustment of the most powerful path of Serving cell, with the position making the search window carrying out using in the process of timing tracking to adjacent area cover the most powerful path of adjacent area.Because base station is static, the relativeness of the most powerful path position of Serving cell and the most powerful path position of adjacent area is comparatively fixing, therefore, in the embodiment of the present invention, UE is according to the position offset of the most powerful path of Serving cell, and the position of adjustment adjacent area search window, is in the hunting zone of adjacent area search window to make the position of adjacent area most powerful path, thus achieve and promote adjacent area timing tracking performance when not increasing hardware resource, reduce adjacent area timing tracking power consumption simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is that the present invention carries out method embodiment schematic diagram of timing tracking to adjacent area;
Fig. 2 is that the present invention carries out another embodiment schematic diagram of method of timing tracking to adjacent area;
Fig. 3 is UE of the present invention embodiment schematic diagram;
Fig. 4 is UE of the present invention position adjustment embodiment schematic diagram to adjacent area search window;
Fig. 5 is another embodiment schematic diagram of UE of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiments provide a kind of method and the UE that adjacent area are carried out to timing tracking, adjacent area timing tracking power consumption can be reduced, promote adjacent area timing tracking performance.The UE that the embodiment of the present invention provides can be the electronic equipment such as personal computer (Personal Computer, PC), panel computer, mobile phone, notebook computer.
Refer to Fig. 1 below, the present invention comprises method embodiment that timing tracking is carried out in adjacent area:
101, UE obtains the position offset of the most powerful path of Serving cell;
In the present embodiment, Serving cell is the current resident community of UE, and UE can use the most powerful path of multiple search window search service community, to realize carrying out timing tracking to Serving cell.
Due in UE standby, the problem of the introducing of 32K timer clock and footpath drift, the position of the most powerful path of the Serving cell traced into can constantly change, and UE can obtain the position offset of the most powerful path of Serving cell.
102, UE carries out the position of the search window used in the process of timing tracking to adjacent area according to the position offset adjustment of the most powerful path of Serving cell, with the position making the search window carrying out using in the process of timing tracking to adjacent area cover the most powerful path of adjacent area.
Because the communication quality of Serving cell, load state etc. can along with the changes of channel, the access quantity of user etc. are change constantly, and when Serving cell cannot provide stable service for UE, UE needs searching neighboring area, carries out cell reselection, to obtain better service.Therefore, need to carry out timing tracking to adjacent area while timing tracking Serving cell.Namely the process of timing tracking utilizes search window to find the process of most powerful path.
Equally, the position of the most powerful path of adjacent area also can constantly change.But, because base station is static, so the relativeness of the position of the position of the most powerful path of adjacent area and the most powerful path of Serving cell is comparatively fixing.Therefore, in the present embodiment, can with the position offset of the most powerful path of Serving cell for reference, adjustment is used for the position of search window adjacent area being carried out to timing tracking, with the position making the search window carrying out using in the process of timing tracking to adjacent area cover the most powerful path of adjacent area.
In addition, in the present embodiment, carry out all needing in the process of timing tracking to use search window to Serving cell and adjacent area, and the size of search window to arrange also be a crucial problem, the size of search window directly affects the performance of network and UE.If it is excessive that search window is arranged, the hunting zone of UE is naturally very large, although available signal can search out completely, but also can search into other intensity is lower by some signal simultaneously, cause UE cannot normally demodulation, form the interference to network, in addition search window arrange excessive, the search speed of UE also can be caused slack-off, increase extra power consumption; But, if search window setting is too small, again by the reception of restricting signal, makes useful multipath or pilot signal enter search window, thus also can form the interference to network, cause call drop.So in the application process of reality, need the size that search window is reasonably set according to the actual conditions of network.
In the present embodiment, UE obtains the position offset of the most powerful path of Serving cell, and Serving cell is the current resident community of UE; UE carries out the position of the search window used in the process of timing tracking to adjacent area according to the position offset adjustment of the most powerful path of Serving cell, with the position making the search window carrying out using in the process of timing tracking to adjacent area cover the most powerful path of adjacent area.Because base station is static, the relativeness of the most powerful path position of Serving cell and the most powerful path position of adjacent area is comparatively fixing, therefore, in the present embodiment, UE is according to the position offset of the most powerful path of Serving cell, and the position of adjustment adjacent area search window, is in the hunting zone of adjacent area search window to make the position of adjacent area most powerful path, thus achieve and promote adjacent area timing tracking performance when not increasing hardware resource, reduce adjacent area timing tracking power consumption simultaneously.
For ease of understanding, be described the method that timing tracking is carried out in adjacent area a kind of in the embodiment of the present invention with an instantiation below, refer to Fig. 2, the present embodiment method comprises:
201, UE obtains the position offset of the most powerful path of Serving cell;
In the present embodiment, UE resides in Serving cell.We know, the quantity of search window is more, and the hunting zone that can cover is wider.Therefore, in order to guarantee the most powerful path searching Serving cell, can use multiple, such as the most powerful path of 3 search window search service communities, to realize carrying out timing tracking to Serving cell.Due in UE standby, the problem of the introducing of 32K timer clock and footpath drift, the position of the most powerful path in Serving cell can constantly change, and UE can obtain the position offset of the most powerful path of Serving cell.
202, UE judges whether the position offset of the most powerful path of Serving cell is more than or equal to default threshold value, if so, then performs step 203, if not, then performs step 204;
Because the communication quality of Serving cell, load state etc. can along with the changes of channel, the access quantity of user etc. are change constantly, and when Serving cell cannot provide stable service for UE, UE needs searching neighboring area, carries out cell reselection, to obtain better service.Therefore, need to carry out timing tracking to adjacent area while timing tracking Serving cell.Namely the process of timing tracking utilizes search window to find the process of most powerful path.In order to save tracking power consumption, the quantity of adjacent area being carried out to the search window adopted in the process of timing tracking is less than the quantity of Serving cell being carried out to the search window adopted in the process of timing tracking.
Equally, the position of the most powerful path of adjacent area also can constantly change.But, because base station is static, so the relativeness of the position of the position of the most powerful path of adjacent area and the most powerful path of Serving cell is comparatively fixing.Therefore, in the present embodiment, can with the position offset of the most powerful path of Serving cell for reference, adjustment is used for the position of search window adjacent area being carried out to timing tracking.
In the present embodiment, the position of the search window of adjacent area directly can be adjusted described position offset according to the offset direction of the most powerful path of Serving cell, to ensure that the search window carrying out using in the process of timing tracking to adjacent area covers the position of the most powerful path of adjacent area.
But, in actual moving process, when the position offset amplitude of most powerful path is less, may the position of the most powerful path of adjacent area can't be caused to exceed the hunting zone of the search window of adjacent area.Therefore, following the tracks of power consumption to save adjacent area further, can also determine whether the position of the search window of adjacent area is adjusted according to actual conditions.
Particularly, UE can pre-set a threshold value according to the hunting zone of the search window of adjacent area, and such as, if a search window has only been used in adjacent area, the hunting zone of this search window is 64chip, then threshold value can be set to 16chip.After the position offset of most powerful path obtaining Serving cell, UE first judges whether the position offset of the most powerful path of Serving cell is more than or equal to default threshold value, if be more than or equal to, then adjusts the position of adjacent area search window, if be less than, then do not adjust the position of adjacent area search window.
203, the UE position of search window of will carry out using in the process of timing tracking to adjacent area, offsets this position offset according to the offset direction of the most powerful path of Serving cell;
When the position offset of the most powerful path of Serving cell is more than or equal to default threshold value, the position of search window that UE will carry out using in the process of timing tracking to adjacent area, offsets this position offset according to the offset direction of the most powerful path of Serving cell.
By the position of search window of carrying out using in the process of timing tracking to adjacent area, after offseting this position offset according to the offset direction of the most powerful path of Serving cell, the position of the most powerful path of adjacent area will be positioned at the center of adjacent area search window.Then UE is centered by the most powerful path of adjacent area, utilizes the useful signal of the search window searching neighboring area of adjacent area.
204, UE does not adjust the position of adjacent area being carried out to the search window used in the process of timing tracking.
In addition, in the present embodiment, carry out all needing in the process of timing tracking to use search window to Serving cell and adjacent area, and the size of search window to arrange also be a crucial problem, the size of search window directly affects the performance of network and UE.If it is excessive that search window is arranged, the hunting zone of UE is naturally very large, although available signal can search out completely, but also can search into other intensity is lower by some signal simultaneously, cause UE cannot normally demodulation, form the interference to network, in addition search window arrange excessive, the search speed of UE also can be caused slack-off, increase extra power consumption; But, if search window setting is too small, again by the reception of restricting signal, makes useful multipath or pilot signal enter search window, thus also can form the interference to network, cause call drop.So in the application process of reality, need the size that search window is reasonably set according to the actual conditions of network.
In the present embodiment, UE is after the position offset of most powerful path obtaining Serving cell, first can judge whether the position offset of the most powerful path of Serving cell is more than or equal to default threshold value, if be more than or equal to, just can adjust the position of adjacent area search window, if be less than, then do not adjust the position of adjacent area search window.The method of the position of the position offset adjustment adjacent area search window of this most powerful path according to Serving cell, the position of adjacent area most powerful path can be made to be in the hunting zone of adjacent area search window all the time, thus achieve and promote adjacent area timing tracking performance when not increasing hardware resource, reduce adjacent area timing tracking power consumption simultaneously.
Be described the user equipment (UE) in the embodiment of the present invention below, refer to Fig. 3, the UE300 of the present embodiment comprises:
Acquiring unit 301, for obtaining the position offset of the most powerful path of Serving cell, Serving cell is the current resident community of UE;
Processing unit 302, position offset for the most powerful path according to Serving cell adjusts the position of adjacent area being carried out to the search window used in the process of timing tracking, with the position making the search window carrying out using in the process of timing tracking to adjacent area cover the most powerful path of adjacent area.
For ease of understanding, with an application scenarios, the interactive mode between each unit of UE300 in the present embodiment is described below.
In the present embodiment, UE resides in Serving cell.We know, the quantity of search window is more, and the hunting zone that can cover is wider.Therefore, in order to guarantee the most powerful path searching Serving cell, acquiring unit 301 can use the most powerful path of multiple search window search service community, to realize carrying out timing tracking to Serving cell.Due in UE standby, the problem of the introducing of 32K timer clock and footpath drift, the position of the most powerful path in the Serving cell traced into can constantly change, and acquiring unit 301 obtains the position offset of the most powerful path of Serving cell.
Because the communication quality of Serving cell, load state etc. can along with the changes of channel, the access quantity of user etc. are change constantly, and when Serving cell cannot provide stable service for UE, UE needs searching neighboring area, carries out cell reselection, to obtain better service.Therefore, need to carry out timing tracking to adjacent area while timing tracking Serving cell.Namely the process of timing tracking utilizes search window to find the process of most powerful path.In order to save tracking power consumption, the quantity of adjacent area being carried out to the search window adopted in the process of timing tracking is less than the quantity of search window Serving cell being carried out to timing tracking employing.
Equally, the position of the most powerful path of adjacent area also can constantly change.But, because base station is static, so the relativeness of the position of the position of the most powerful path of adjacent area and the most powerful path of Serving cell is comparatively fixing.Therefore, in the present embodiment, processing unit 302 can with the position offset of the most powerful path of Serving cell for reference, and adjustment is used for the position of search window adjacent area being carried out to timing tracking.
In the present embodiment, the position of the search window of adjacent area directly can be adjusted described position offset according to the offset direction of the most powerful path of Serving cell by processing unit 302, to ensure that the search window carrying out using in the process of timing tracking to adjacent area covers the position of the most powerful path of adjacent area.
But, in actual moving process, when the offset amplitude of most powerful path is less, may the position of the most powerful path of adjacent area can't be caused to exceed the hunting zone of the search window of adjacent area.Therefore, follow the tracks of power consumption to save adjacent area further, processing unit 302 can also determine whether adjust the position of the search window of adjacent area according to actual conditions.
Particularly, processing unit 302 can pre-set a threshold value according to the hunting zone of the search window of adjacent area, such as, if carry out timing tracking to adjacent area only used a search window, the hunting zone of this search window is 64chip, then threshold value can be set to 16chip.After acquiring unit 301 obtains the position offset of the most powerful path of Serving cell, processing unit 302 first judges whether the position offset of the most powerful path of Serving cell is more than or equal to default threshold value, if be less than, then processing unit 302 does not adjust the position of adjacent area search window; If be more than or equal to, then the position of the search window of adjacent area is directly adjusted described position offset according to the offset direction of the most powerful path of Serving cell by processing unit 302, the position of search window that processing unit 302 will carry out using in the process of timing tracking to adjacent area, after offseting this position offset according to the offset direction of the most powerful path of Serving cell, the position of the most powerful path of adjacent area will be positioned at the center of adjacent area search window.Then processing unit 302 is centered by the most powerful path of adjacent area, utilizes the useful signal of the search window searching neighboring area of adjacent area.
In addition, in the present embodiment, carry out all needing in the process of timing tracking to use search window to Serving cell and adjacent area, and the size of search window to arrange also be a crucial problem, the size of search window directly affects the performance of network and UE.If it is excessive that search window is arranged, the hunting zone of UE is naturally very large, although available signal can search out completely, but also can search into other intensity is lower by some signal simultaneously, cause UE cannot normally demodulation, form the interference to network, in addition search window arrange excessive, the search speed of UE also can be caused slack-off, increase extra power consumption; But, if search window setting is too small, again by the reception of restricting signal, makes useful multipath or pilot signal enter search window, thus also can form the interference to network, cause call drop.So in the application process of reality, need the size that search window is reasonably set according to the actual conditions of network.
Illustrate the position offset of UE according to the most powerful path of Serving cell below, the process of the position of adjustment adjacent area search window:
Refer to Fig. 4, UE resides in Serving cell, uses 3 search windows to carry out timing tracking to Serving cell, uses 1 search window to carry out timing tracking to adjacent area, to save adjacent area timing tracking power consumption.(1) part in the drawings, suppose that UE is entering discontinuous reception (Discontinuous Reception, DRX) before pattern, trace into the position of the most powerful path of Serving cell at A place, the distance of the position A distance timing base of the most powerful path of Serving cell is T0, the position of the most powerful path of adjacent area is at B place, distance between the most powerful path position A of Serving cell and the most powerful path position B of adjacent area is Tp1p2, and the position A of the most powerful path of Serving cell and the most powerful path position B of adjacent area is all at the near center location of the search window of correspondence.
After a DRX cycle, due to introducing and the footpath drift of 32K timer clock, UE detects that the position of the most powerful path of Serving cell offsets left, be displaced to Ao place, the distance of distance timing base is T1, the position of the most powerful path of adjacent area has been displaced to Bo place, consult (2) part in figure, namely the position offset of the most powerful path of Serving cell is T0-T1, now the most powerful path of adjacent area has searched the hunting zone of plain window beyond adjacent area, if do not adjusted the position of the search window of adjacent area, then UE cannot trace into adjacent area.
Because base station is static, the distance between the most powerful path position of Serving cell and the most powerful path position of adjacent area can regard Tp1p2 as all the time, therefore, now the search window of adjacent area is offset the most powerful path that T0-T1 can search adjacent area left.After searching the most powerful path of adjacent area, just can carry out timing tracking according to the most powerful path of adjacent area to adjacent area.
In the present embodiment, after acquiring unit obtains the position offset of the most powerful path of Serving cell, processing unit first can judge whether the position offset of the most powerful path of Serving cell is more than or equal to default threshold value, if be more than or equal to, just can adjust the position of adjacent area search window, if be less than, then do not adjust the position of adjacent area search window.The method of the position of the position offset adjustment adjacent area search window of this most powerful path according to Serving cell, the position of adjacent area most powerful path can be made to be in the hunting zone of adjacent area search window all the time, thus achieve and promote adjacent area timing tracking performance when not increasing hardware resource, reduce adjacent area timing tracking power consumption simultaneously.
Introduce the UE that the embodiment of the present invention provides below further, refer to Fig. 5, this UE may be used for the method for adjacent area being carried out to timing tracking that enforcement above-described embodiment provides.Specifically:
UE500 can comprise RF(Radio Frequency, radio frequency) circuit 510, the memory 520 including one or more computer-readable recording mediums, input unit 530, display unit 540, transducer 550, voicefrequency circuit 560, WiFi (wireless fidelity, Wireless Fidelity) module 570, include the parts such as processor 580 and power supply 590 that more than or processes core.It will be understood by those skilled in the art that the UE structure shown in Fig. 5 does not form the restriction to UE, the parts more more or less than diagram can be comprised, or combine some parts, or different parts are arranged.Wherein:
RF circuit 510 can be used in messaging or communication process, the reception of signal and transmission, especially, after being received by the downlink information of base station, transfers to more than one or one processor 580 to process; In addition, base station is sent to by relating to up data.Usually, RF circuit 510 includes but not limited to antenna, at least one amplifier, tuner, one or more oscillator, subscriber identity module (SIM) card, transceiver, coupler, LNA(Low Noise Amplifier, low noise amplifier), duplexer etc.In addition, RF circuit 510 can also by radio communication and network and other devices communicatings.Described radio communication can use arbitrary communication standard or agreement, include but not limited to GSM (Global System of Mobilecommunication, global system for mobile communications), GPRS (General Packet Radio Service, general packet radio service), CDMA (Code Division Multiple Access, code division multiple access), WCDMA (Wideband Code Division Multiple Access, Wideband Code Division Multiple Access (WCDMA)), LTE (LongTerm Evolution, Long Term Evolution), Email, SMS (Short Messaging Service, Short Message Service) etc.
Memory 520 can be used for storing software program and module, and processor 580 is stored in software program and the module of memory 520 by running, thus performs the application of various function and data processing.Memory 520 mainly can comprise storage program district and store data field, and wherein, storage program district can storage operation system, application program (such as sound-playing function, image player function etc.) etc. needed at least one function; Store data field and can store the data (such as voice data, phone directory etc.) etc. created according to the use of UE500.In addition, memory 520 can comprise high-speed random access memory, can also comprise nonvolatile memory, such as at least one disk memory, flush memory device or other volatile solid-state parts.Correspondingly, memory 520 can also comprise Memory Controller, to provide the access of processor 580 and input unit 530 pairs of memories 520.
Input unit 530 can be used for the numeral or the character information that receive input, and produces and to arrange with user and function controls relevant keyboard, mouse, action bars, optics or trace ball signal and inputs.Particularly, input unit 530 can comprise Touch sensitive surface 531 and other input equipments 532.Touch sensitive surface 531, also referred to as touch display screen or Trackpad, user can be collected or neighbouring touch operation (such as user uses any applicable object or the operations of annex on Touch sensitive surface 531 or near Touch sensitive surface 531 such as finger, stylus) thereon, and drive corresponding jockey according to the formula preset.Optionally, Touch sensitive surface 531 can comprise touch detecting apparatus and touch controller two parts.Wherein, touch detecting apparatus detects the touch orientation of user, and detects the signal that touch operation brings, and sends signal to touch controller; Touch controller receives touch information from touch detecting apparatus, and converts it to contact coordinate, then gives processor 580, and the order that energy receiving processor 580 is sent also is performed.In addition, the polytypes such as resistance-type, condenser type, infrared ray and surface acoustic wave can be adopted to realize Touch sensitive surface 531.Except Touch sensitive surface 531, input unit 530 can also comprise other input equipments 532.Particularly, other input equipments 532 can include but not limited to one or more in physical keyboard, function key (such as volume control button, switch key etc.), trace ball, mouse, action bars etc.
Display unit 540 can be used for the various graphical user interface showing information or the information being supplied to user and the UE500 inputted by user, and these graphical user interface can be made up of figure, text, icon, video and its combination in any.Display unit 540 can comprise display floater 541, optionally, the form such as LCD (Liquid Crystal Display, liquid crystal display), OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode) can be adopted to configure display floater 541.Further, Touch sensitive surface 531 can cover display floater 541, when Touch sensitive surface 531 detects thereon or after neighbouring touch operation, send processor 580 to determine the type of touch event, on display floater 541, provide corresponding vision to export with preprocessor 580 according to the type of touch event.Although in Figure 5, Touch sensitive surface 531 and display floater 541 be as two independently parts realize input and input function, in certain embodiments, can by Touch sensitive surface 531 and display floater 541 integrated and realize input and output function.
UE500 also can comprise at least one transducer 550, such as optical sensor, motion sensor and other transducers.Particularly, optical sensor can comprise ambient light sensor and proximity transducer, and wherein, ambient light sensor the light and shade of environmentally light can regulate the brightness of display floater 541, proximity transducer when UE500 moves in one's ear, can cut out display floater 541 and/or backlight.As the one of motion sensor; Gravity accelerometer can detect the size of all directions (are generally three axles) acceleration; size and the direction of gravity can be detected time static, can be used for identifying the application (such as horizontal/vertical screen switching, dependent game, magnetometer pose calibrating) of mobile phone attitude, Vibration identification correlation function (such as pedometer, knock) etc.; As for UE500 also other transducers such as configurable gyroscope, barometer, hygrometer, thermometer, infrared ray sensor, do not repeat them here.
Voicefrequency circuit 560, loud speaker 561, microphone 562 can provide the audio interface between user and UE500.Voicefrequency circuit 560 can by receive voice data conversion after the signal of telecommunication, be transferred to loud speaker 561, by loud speaker 561 be converted to voice signal export; On the other hand, the voice signal of collection is converted to the signal of telecommunication by microphone 562, voice data is converted to after being received by voicefrequency circuit 560, after again voice data output processor 580 being processed, through RF circuit 510 to send to such as another UE, or export voice data to memory 520 to process further.Voicefrequency circuit 560 also may comprise earphone jack, to provide the communication of peripheral hardware earphone and UE500.
WiFi belongs to short range wireless transmission technology, and by WiFi module 570, UE500 can help that user sends and receive e-mail, browsing page and access streaming video etc., and its broadband internet wireless for user provides is accessed.Although Fig. 5 shows WiFi module 570, be understandable that, it does not belong to must forming of UE500, can omit in the scope of essence not changing invention as required completely.
Processor 580 is control centres of UE500, utilize the various piece of various interface and the whole mobile phone of connection, software program in memory 520 and/or module is stored in by running or performing, and call the data be stored in memory 520, perform various function and the deal with data of UE500, thus integral monitoring is carried out to mobile phone.Optionally, processor 580 can comprise one or more process core; Preferably, processor 580 accessible site application processor and modem processor, wherein, application processor mainly processes operating system, user interface and application program etc., and modem processor mainly processes radio communication.Be understandable that, above-mentioned modem processor also can not be integrated in processor 580.
UE500 also comprises the power supply 590(such as battery of powering to all parts), preferably, power supply can be connected with processor 580 logic by power-supply management system, thus realizes the functions such as management charging, electric discharge and power managed by power-supply management system.Power supply 590 can also comprise one or more direct current or AC power, recharging system, power failure detection circuit, power supply changeover device or the random component such as inverter, power supply status indicator.
Although not shown, UE500 can also comprise camera, bluetooth module etc., does not repeat them here.Concrete the display unit of UE can be touch-screen display, stores more than one or one program in the memory 520 of UE500 in the present embodiment, and processor 580 is stored in the software program of memory 520 by running, for:
Obtain the position offset of the most powerful path of Serving cell, Serving cell is the current resident community of UE;
Position offset according to the most powerful path of described Serving cell adjusts the position of adjacent area being carried out to the search window used in the process of timing tracking, with the position making the search window carrying out using in the process of timing tracking to adjacent area cover the most powerful path of adjacent area.
Wherein, processor 580 carries out the method for the position of the search window used in the process of timing tracking to adjacent area according to the position offset adjustment of the most powerful path of Serving cell, be specially:
Judge whether the position offset of the most powerful path of Serving cell is more than or equal to default threshold value;
If the position offset of the most powerful path of Serving cell is more than or equal to default threshold value, then the position of search window of will carry out using in the process of timing tracking to adjacent area, offsets this position offset according to the offset direction of the most powerful path of Serving cell;
If the position offset of the most powerful path of Serving cell is less than described default threshold value, then do not adjust the position of described adjacent area being carried out to the search window used in the process of timing tracking.
In addition, the quantity of adjacent area being carried out to the search window used in the process of timing tracking is less than the quantity of Serving cell being carried out to the search window used in the process of timing tracking.
In the present embodiment, processor obtains the position offset of the most powerful path of Serving cell, and Serving cell is the current resident community of UE; Position offset according to the most powerful path of Serving cell adjusts the position of adjacent area being carried out to the search window used in the process of timing tracking, with the position making the search window carrying out using in the process of timing tracking to adjacent area cover the most powerful path of adjacent area.Because base station is static, the relativeness of the most powerful path position of Serving cell and the most powerful path position of adjacent area is comparatively fixing, therefore, in the present embodiment, processor is according to the position offset of the most powerful path of Serving cell, and the position of adjustment adjacent area search window, can make the position of adjacent area most powerful path all the time in the hunting zone of adjacent area search window, thus achieve and promote adjacent area timing tracking performance when not increasing hardware resource, reduce adjacent area timing tracking power consumption simultaneously.
In addition, it should be noted that, in several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. various can be program code stored medium.
The above, above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
1. adjacent area is carried out to a method for timing tracking, it is characterized in that, comprising:
User equipment (UE) obtains the position offset of the most powerful path of Serving cell, and described Serving cell is the current resident community of described UE;
Described UE carries out the position of the search window used in the process of timing tracking to adjacent area according to the position offset adjustment of the most powerful path of described Serving cell, cover the position of the most powerful path of described adjacent area to make the described search window carrying out using in the process of timing tracking to adjacent area.
2. the method for claim 1, is characterized in that, described UE carries out the method for the position of the search window used in the process of timing tracking to adjacent area according to the position offset adjustment of the most powerful path of described Serving cell, be specially:
Described UE judges whether the position offset of the most powerful path of described Serving cell is more than or equal to default threshold value;
If the position offset of the most powerful path of described Serving cell is more than or equal to described default threshold value, then adjust the position of described adjacent area being carried out to the search window used in the process of timing tracking;
If the position offset of the most powerful path of described Serving cell is less than described default threshold value, then do not adjust the position of described adjacent area being carried out to the search window used in the process of timing tracking.
3. method as claimed in claim 2, it is characterized in that, if the position offset of the most powerful path of described Serving cell is more than or equal to described default threshold value, then adjusts the position of described adjacent area being carried out to the search window used in the process of timing tracking, be specially:
If the position offset of the most powerful path of described Serving cell is more than or equal to default threshold value, then by described position of described adjacent area being carried out to the search window used in the process of timing tracking, offset described position offset according to the offset direction of the most powerful path of described Serving cell.
4. the method as described in claims 1 to 3 any one, is characterized in that, the quantity of described adjacent area being carried out to the search window used in the process of timing tracking is less than the quantity of described Serving cell being carried out to the search window used in the process of timing tracking.
5. a user equipment (UE), is characterized in that, comprising:
Acquiring unit, for obtaining the position offset of the most powerful path of Serving cell, described Serving cell is the current resident community of described UE;
Processing unit, position offset for the most powerful path according to described Serving cell adjusts the position of adjacent area being carried out to the search window used in the process of timing tracking, covers the position of the most powerful path of described adjacent area to make the described search window carrying out using in the process of timing tracking to adjacent area.
6. UE as claimed in claim 5, is characterized in that, described processing unit specifically for:
Judge whether the position offset of the most powerful path of described Serving cell is more than or equal to default threshold value;
If the position offset of the most powerful path of described Serving cell is more than or equal to described default threshold value, then the position of the search window used in the process of timing tracking is carried out in described processing unit adjustment to described adjacent area;
If the position offset of the most powerful path of described Serving cell is less than described default threshold value, then described processing unit does not adjust the position of described adjacent area being carried out to the search window used in the process of timing tracking.
7. UE as claimed in claim 6, is characterized in that, the method for the position of the search window used in the process of timing tracking is carried out in described processing unit adjustment to described adjacent area, be specially:
The position of search window that described processing unit will carry out using in the process of timing tracking to described adjacent area, offsets described position offset according to the offset direction of the most powerful path of described Serving cell.
8. the UE as described in claim 5 to 7 any one, is characterized in that, the quantity of described adjacent area being carried out to the search window used in the process of timing tracking is less than the quantity of described Serving cell being carried out to the search window used in the process of timing tracking.
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