CN101128032A - A method and device for control cell recognition in long evolved system - Google Patents
A method and device for control cell recognition in long evolved system Download PDFInfo
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Abstract
The utility model relates to a control region identification method and device in a long-term evolving system, which belongs to communication technique field. The method comprises: confirming each time value range according to affecting factors on identification process in the control region; and controlling identification process in the region based on the time value obtained toward coincident-frequency measurement. The method and device in the utility model gets affecting factors on time valuation of each operation during the region identification process. These factors comprise public channel design, public pilot channel design, wireless environment, the interference, the algorithm adopted, the realization of the UE and others. During time value simulation experiment and time value confirmation process, the numeric range of each time value in the control identification region process can be effectively determined by taking the factors into consideration, so that the region identification process control can be realized.
Description
Technical field
The present invention relates to communication technical field, relate in particular to the method and the device of control cell identification in a kind of long evolving system.
Background technology
In order to promote the sustainable development of the 3G communication technology, 3GPP proposes and has disposed 3G Long Term Evolution (LTE) work.In LTE, mainly the problem of Xie Jueing is: obtain higher user data rate, improve power system capacity and covering and reasonable 3G spectrum allocation may flexibly.In the LTE system, UE under connection status, the switching between may triggering cell, and the measurement result of UE is depended in the switching of whether carrying out the minizone.
UE needs to obtain synchronously with adjacent sub-district earlier before common frequency measurement is carried out in adjacent sub-district, discerns the sub-district afterwards.For UE, carry out common frequency measurement and have two kinds of situations: the one, be not activated different-frequency measure this moment, then UE can carry out common frequency measurement when receiving data; The 2nd, started different-frequency measure, this moment, UE can only carry out common frequency measurement in the time of not carrying out different-frequency measure so.For first kind of situation, UE need must discern the sub-district in the regular hour, just need to determine to UE the time of a upper limit, and the time of UE identification sub-district mostly is this time most; For second kind of situation, require UE in the regular hour, to discern, also need the influence of considering that different-frequency measure brings simultaneously.
At present, in WCDMA, if UE is in CELL_DCH (UE and network side are by dedicated channel (DCH) reception/transmission data) state, if be not activated different-frequency measure, then UE can be when receiving network side data, carry out slot synchronization, frame synchronization, code group identification, cell identification respectively, and need in 800ms, discern the sub-district in the monitoring set; If started different-frequency measure, then UE can only carry out slot synchronization, frame synchronization, code group identification, cell identification according to compressed mode sequence in the time slot that can carry out common frequency measurement, and need be at T
Identify intraInterior identification sub-district, this recognition time calculates according to following formula:
Wherein: T
Basic identify FDD, intraRepresent basic recognition time, be 800ms; T
Measurement Period, IntraRepresent measuring period; T
IntraExpression T
Measurement Period, IntraThe time that can be used for common frequency measurement in time.
The technology of the identification sub-district among the above-mentioned WCDMA of being applied to is unsuitable for being applied among the LTE.Reason is as follows: the physical-layer techniques of LTE and the scene of measurement are different from WCDMA, and in LTE, UE does not have the CELL_DCH state, be different from WCDMA's so UE carries out the control method of common frequency measurement yet.So the method for WCDMA no longer is applicable to LTE.
The technology that another kind is applied to the identification sub-district among the WCDMA is as follows:
If UE is in CELL_FACH (UE and network side are by FACH channel reception/transmission data) state, if be not activated different-frequency measure, then UE can be when receiving network side data, carry out slot synchronization, frame synchronization, code group identification, cell identification respectively, and need in 800ms, discern the sub-district in the monitoring set; If started different-frequency measure, then UE can only according in the time slot of carried out common frequency measurement of regulation (shown in following formula: N
TTI(M_REP-1) 10) carry out slot synchronization, frame synchronization, code group identification, cell identification, and need discern the sub-district in Tidentify intra, this recognition time calculates according to following formula:
Wherein: T
Basic identify FDD, intraRepresent basic recognition time, be 800ms; N
TTIM_REP10 represents measuring period; N
TTI(M_REP-1) 10 expression N
TTIM_REP10 can be used for the time of common frequency measurement in the time.
The technology of above-mentioned identification sub-district also is unsuitable for being applied among the LTE.Reason is as follows: the physical-layer techniques of LTE and the scene of measurement are different from WCDMA, and in LTE, UE does not have the CELL_FACH state yet, be different from WCDMA's so UE carries out the control method of common frequency measurement yet.So the method for identification sub-district no longer is applicable to LTE among the WCDMA.
Summary of the invention
The object of the present invention is to provide the method and the device of control cell identification in a kind of long evolving system.
The objective of the invention is to be achieved through the following technical solutions:
The method of control cell identification in a kind of long evolving system comprises:
Influencing factor according to each time value scope of controlling process for cell identification is determined described each time value scope;
According to described each time value scope control process for cell identification.
The time value scope of described control process for cell identification comprises:
Synchronization channel symbols allows time value scope, frame synchronization to allow time value scope, identification cell ID ID to allow time value scope, identification to measure type synchronously and allows the maximum time value scope that allows of time value scope and/or identification sub-district.
Influencing described identification sub-district allows the factor of time value scope to comprise:
Synchronization channel symbols allows time value scope, frame synchronization to allow time value scope, identification sub-district ID to allow the time value scope, carry out synchronous number of times and/or common frequency measurement time density synchronously.
It is the signal that subscriber equipment receives district common channel or Common Pilot Channel that described identification sub-district ID allows the time value scope, distinguishes according to known sub-district id information, judges and discern the permission time value scope of adjacent sub-district ID, and its influencing factor comprises:
The design of subscriber equipment identification employed Common Pilot Channel in sub-district and/or common signal channel.
The computational methods of described common frequency measurement time density comprise:
When measurement is when repeating with fixed sequence program, common frequency measurement time density equals to be used in measuring period the ratio of the time and this section measuring period of common frequency measurement; Or,
When measurement does not have fixed sequence program, at the different radio environment, carry out different-frequency measure by arbitrary extracting a period of time in measuring period repeatedly, and calculate each common frequency measurement time density, get and repeatedly calculate the averaging of income value as common frequency measurement time density.
The described factor that influences each time value scope comprises:
The algorithm that adopt common signal channel design, Common Pilot Channel design, wireless environment, interference, user equipment searches sub-district, the realization and/or the common frequency measurement time density of subscriber equipment.
Under the situation of not considering wireless environment, described common signal channel design specifically comprises the influence of each time value scope:
When having only a synchronization channel symbols in the radio frames, then subscriber equipment time of finding synchronization channel symbols be synchronization channel symbols regularly, subframe regularly, and frame timing; Or,
When a plurality of synchronization channel symbols is arranged in the radio frames, could determine when then subscriber equipment need find at least one synchronization channel symbols that frame regularly; Or,
Determine frame timing and sub-district ID group in time by frame length of information that broadcast channel carries.
Under the situation of not considering wireless environment, described Common Pilot Channel design specifically comprises the influence of each time value scope:
Determine frame timing and sub-district ID group in time by frame length of pilot signal of down public guide frequency channel.
The described method of each time value scope control cell identification of utilizing specifically comprises:
Utilize the simultaneous operation of synchronous maximum permission time of synchronization channel symbols, the maximum permission time control of frame synchronization and co-frequency neighbor cell, determine sub-district ID group or sub-district ID;
Utilize identification sub-district ID control identification of maximum permission time sub-district ID process, and utilize the maximum permission time of identification sub-district to control whole identification cell operation.
The operation of described identification sub-district further comprises:
UE is undertaken relevant by all included in fixed sub-district ID group sub-district ID and the channel that has carried the Target cell id information, if UE discovery correlation peak then can identify the sub-district; If the time of UE identification sub-district surpasses the time of the maximum identification sub-district that allows, then abandon discerning this sub-district.
The operation of described identification sub-district further comprises:
UE is being undertaken relevantly by sub-district id information in the known Neighboring Cell List and the sub-district that searches, if UE finds correlation peak, then expression identifies the sub-district; If the two is uncorrelated, and total recognition time surpassed the maximum time that allows of identification sub-district, then stops to discern cell operation; If the time is then chosen the next information of not carrying out relevant sub-district and continues to carry out associative operation also not greater than the maximum time that allows of identification sub-district.
The device of control cell identification in a kind of long evolving system comprises:
Time value scope determining unit is used for determining to control each time value scope of discerning the sub-district process;
The cell identification control unit, each the time value scope control identification sub-district process that is used for determining according to described time value scope determining unit.
Described time value scope determining unit further comprises:
Influence time value scope factor determining unit is used for determining the factor of influence time value scope value; And/or,
The time value scope is determined subelement, is used for determining according to the factor of described influence time value scope value the span of each time value of control identification sub-district process.
Described cell identification control unit further comprises:
The time value comparing unit is used for relatively discerning the time value scope of shared time of each process of sub-district and predetermined each process permission, thereby controls identification each operating process of sub-district.
Described device is arranged at user equipment side.
As seen from the above technical solution provided by the invention, the present invention has obtained to influence in the process of identification sub-district the factor of each operating process time value value, comprising: common signal channel design, Common Pilot Channel design, wireless environment, interference, the algorithm of employing, the realization of UE etc.Carry out the time value emulation experiment, determining to consider above-mentioned factor in the time value process, can effectively determine the span of control identification sub-district each time value of process, thereby realizing the control of process for cell identification.
Description of drawings
Fig. 1 is the method for the invention embodiment one operational flowchart;
Fig. 2 only has 1 synchronization channel symbols schematic diagram in the radio frames;
Fig. 3 has 2 synchronization channel symbols schematic diagrames in the radio frames;
Fig. 4 only has 4 synchronization channel symbols schematic diagrames in the radio frames;
Fig. 5 is a common frequency measurement time density calculation schematic diagram;
Fig. 6 is the method for the invention embodiment two operational flowcharts;
Fig. 7 is the method for the invention embodiment three operational flowcharts;
Fig. 8 is the method for the invention embodiment four operational flowcharts;
Fig. 9 is a kind of embodiment module diagram of device of the present invention.
Embodiment
The invention provides the method for control cell identification in a kind of long evolving system, control each operating process of identification sub-district by a plurality of time values.Therefore, if will realize discerning the control of sub-district, need to determine earlier the span of described each time value.The factor that need consider when illustrating that below by several embodiment the present invention determines time value.
Embodiment one as shown in Figure 1, comprises the steps: for the not operating process of the sub-district in cell list of identification
Step 1: network side sending measuring control messages, or other comprise the message of " indication UE measures the not co-frequency neighbor cell in cell list " content;
After step 2:UE receives message, demodulation message; If SCH (synchronizing channel) channel time domain be designed to 1 SCH symbol (synchronization channel symbols) is only arranged in the radio frames, as shown in Figure 2,1 SCH symbol is only arranged in the 10ms promptly, then the UE execution in step 3, otherwise execution in step 4;
Step 3:UE according to the indication of network side in time T
SCH symbol sync timeIn at first carry out sign synchronization with first Target cell of indication, determine symbol regularly and subframe regularly, determine frame simultaneously regularly; And forward to and carried out for the 6th step;
Wherein, T
SCH symbol sync timeExpression UE receives the signal of sub-district synchronous channel SCH, thereby judges with the sub-district and obtain the time value scope that the SCH sign synchronization allows.T
SCH symbol sync timeSize relevant with the realization of design, wireless environment and the UE of synchronizing channel.
So when being designed to of synchronizing channel: have only in the frame of a 10ms when in some subframes (Sub-frame) SCH being arranged, UE when finding SCH, can determine subframe regularly and frame regularly.Reason is as follows: because the position of SCH symbol in subframe and 10ms frame fix, so find SCH, can determine that also subframe regularly and the frame timing;
At this moment, UE just can realize sign synchronization in the time of not considering the next subframe of the best situation of wireless environment, promptly finds the position of SCH in a frame, and in this case, UE has just found the position of SCH in first subframe at the beginning; Do not considering under the worst situation of wireless environment it is time of a frame can realize sign synchronization, in this case, UE has traveled through all positions in the frame one time, and to the last a frame just finds SCH; But in fact, because the influence of wireless environment multipath, interference etc. can not guarantee that the result that UE once searches for can be very accurate, so UE needs repeated detection usually, i.e. T
SCH symbol sync timeCan be greater than the lock in time under the best-case.
T
SCH symbol sync timeAlso the specific implementation with UE has relation, and promptly different hardware performances can cause the trickle difference of lock in time.
Described wireless environment can be understood as this environment and can reflect the user under the environment of certain movement velocity and certain propagation, the variation of its received signal.The communication environments here can reflected signal the decline situation, such as, under the built-up situation with all be broad Plain on every side, received signal strength signal intensity is different.Because among the LTE, need guarantee the orthogonality of subcarrier as far as possible, and frequency shift (FS) can damage this Orthodox Church row, if and during user's high-speed motion, may cause bigger frequency shift (FS), thereby influence the orthogonality of subcarrier, produce the interference between the carrier wave simultaneously, can impact the correct restituted signal of receiving terminal.Still need to consider under the different wireless environments time of User Recognition sub-district.
The hardware of UE is realized comprising: if during common frequency measurement, UE need carry out different-frequency measure, UE need adjust receiver to the another one operating frequency so, then the hardware of UE can forward other operating frequency to from current frequency of operation, this needs the time, different hardware, may there be fine distinction its time;
The software of UE is realized: such as the algorithm of the search cell of UE, and different producers, its realization may be different, may cause the more temporal difference in identification sub-district;
Step 4: when the SCH channel time domain be designed in the radio frames (being 10ms) a plurality of SCH symbol are arranged, as shown in Figures 3 and 4, Fig. 3 exists in the frame two SCH, Fig. 4 to have 4 SCH in the frame.UE and Target cell are in time T
SCH symbol sync timeIn at first carry out the sign synchronization of SCH with first Target cell of indication, determine symbol regularly and subframe regularly; And forward to and carried out for the 5th step;
Wherein, T
SCH symbol sync timeInfluencing factor with described in the step 3.If 2 SCH are arranged in the frame, then UE only to determine timing of SCH symbol and subframe regularly, can not determine that frame regularly when finding SCH;
At this moment, UE just can realize sign synchronization in the time of not considering the next subframe of the best situation of wireless environment, promptly finds the position of SCH in a frame, and in this case, UE has just found the position of SCH in first subframe at the beginning; Do not consider that also the time of 10 subframes (i.e. half 10ms frame) can be realized sign synchronization under the worst situation of wireless environment, in this case, UE has traveled through all positions in 10 subframes one time, just finds SCH up to the 10th subframe; But in fact, because the influence of wireless environment multipath, interference etc., thus can not guarantee that the result that UE once searches for can be very accurate, so UE needs repeated detection usually, i.e. T
SCH symbol sync timeCan be greater than the lock in time under the best-case.
Step 5:UE and Target cell are in time T
Radio frame sync timeIn carry out frame synchronization and determine ID group under the sub-district;
Wherein, T
Radio frame sync timeExpression UE receives the signal of sub-district synchronous channel SCH, judges and obtains the time value scope that frame synchronization allows with the sub-district, influences T
Radio frame sync timeFactor with described in the step 3.As: supposing has 4 SCH in the frame, so, UE is if determine frame regularly, need find 4 or greater than determining behind 1 SCH, as for finding what SCH can determine at least, need the basis design of synchronizing channel at last.Consider the influence that wireless environment, interference, UE are realized, the time of search can be greater than determining the frame time regularly under the aforesaid situation of not considering factor affecting such as wireless environment.
If in a radio frames one or more SCH symbols are arranged, and determine frame synchronization by the SCH channel, then when determining frame synchronization, can determine the ID group of sub-district, reason: no matter be one or a plurality of SCH symbol, all represented a sequence, this sequence can uniquely be determined the ID group of a sub-district.
For aforesaid SCH, may be main SCH, may be auxilliary SCH, also may be SCH (promptly being regardless of primary/secondary)
The method of determining frame synchronization and sub-district ID group also comprises:
1) based on BCH (broadcast channel):
Mainly be to determine frame timing and sub-district ID group by the information that BCH carries, best situation is when not considering the factor of wireless environment, to determine (because BCH is to launch in the cycle with a radio frames) in the frame length time.
2) based on down-bound pilot frequency signal:
Determine frame timing and sub-district ID group by the pilot signal of down public guide frequency channel, do not consider under the factor situation of wireless environment that best situation is to determine (this channel is the cycle emission with a radio frames) in the frame length time.
Step 6:UE is in time T
Identify cell ID time1In carry out relevant by all included sub-district ID in above-mentioned definite sub-district ID group with the channel that carries the Target cell id information;
UE also can determine the ID of sub-district by the sequence information of SCH channel.
Step 7:, then can discern this sub-district if UE finds correlation peak; If also need UE to measure the not co-frequency neighbor cell of other in cell list, then UE continues the adjacent sub-district of search, repeats above-mentioned steps.
Step 8: if the time of UE identification sub-district is above the time T of the identification sub-district that allows
Identify unknown cell timeScope then abandons discerning this sub-district;
T
Identify cell ID time1Expression UE receives the signal of sub-district synchronous channel SCH and/or BCH and/or Common Pilot Channel, according to known cell id information, distinguishes the time value scope of judging and discerning cell ID permission;
T
Identify unknown cell timeThe time value scope that this sub-district allows is obtained synchronously and discerned in sub-district of expression UE search with the sub-district.
In said process, because the influence of factors such as wireless environment, interference, it is synchronous that UE need carry out repeatedly, to avoid pseudo-synchronous appearance, needs to consider to discern the influence of the time of sub-district ID simultaneously; Described T
Identify unknown cell timeBe the time value scope of the identification sub-district of the maximum that allows, the factor that influences its value comprises: the sign synchronization time value scope of SCH, frame synchronization time value scope, identification sub-district ID time value scope and/or carry out synchronous number of times etc.If also need to carry out different-frequency measure when carrying out common frequency measurement, all time may be used to common frequency measurement so originally, and after starting different-frequency measure, then some time will be used for different-frequency measure, so T
Identify unknown cell timeValue necessarily greater than not starting the needed time of different-frequency measure.Also at this moment promptly, this time and the density that can be used for the common frequency measurement time, relevant.
Described about being calculated as follows of the density of common frequency measurement time, in two kinds of situation:
1) measuring is to repeat with certain fixing sequence, and also promptly the Measuring Time of this moment has repeatability;
Suppose certain section time T
MeasureIn can be used for common frequency measurement time be: T
IntraThe time that can be used for different-frequency measure is: T
InterMeasurement is with T
MeasureFor the cycle repeats, cycle herein can refer to a length of measuring sequence, and this sequence length can be to determine in advance, also can be that the size according to user's data that information passes draws, also can refer to cycle of measuring, then the density of common frequency measurement is: T
Intra/ T
Measure, as shown in Figure 5.
There is not fixing sequence when 2) measuring, the time that yet promptly is used for different-frequency measure does not have repeatability, this sequence comprises two kinds of situations: the one, considered the situation of different-frequency measure during the network side scheduling resource, and the requirement of carrying out different-frequency measure can be satisfied in the measurement space of promptly dispatching out; The 2nd, do not consider the situation of different-frequency measure during the network side scheduling resource, the requirement of different-frequency measure may be satisfied in the measurement space of dispatching out, the requirement of also may partly satisfy, part not satisfying different-frequency measure, at this moment, might the measurement space (gap) of not satisfying the requirement of different-frequency measure can be abandoned by UE, only utilize the gap that has satisfied measurement requirement to measure.
At this moment, the density that is used for common frequency measurement needs to consider: the time and the modifying factor that can be used for common frequency measurement in measuring period are calculated.Also at this moment promptly, common frequency measurement density is: α * T
Intra/ T
Measure, α refers to modifying factor, and the calculating of this value need draw by experiment, and perhaps density is the value in the following scope: (α * T
Intra/ T
Measure, β * T
Intra/ T
Measure), in the following formula, boundary value can comprise, also can not comprise.
In the common frequency measurement time density formula, α, β refer to modifying factor, and the calculating of this value need draw by experiment.Reason: consider that common frequency measurement time density is can not be directly according to T so if it is uncertain words that UE carries out the time of different-frequency measure in certain period
Intra/ T
MeasureCalculate, common frequency measurement time density so in such cases can be expressed in the following way:
Limit a fixing value, this value can be thought a correction value, can carry out different-frequency measure by the arbitrary extracting a period of time in measuring period repeatedly, calculates each common frequency measurement time density, averages afterwards to draw.
The fixed value of described setting can be set different values according to the difference of wireless environment.If set a fixed value, then can suppose it is mean value under all wireless environments.
Embodiment two as shown in Figure 6, comprises the steps: for the operating process of the co-frequency neighbor cell of recognition network indication
Step 1: network side issues special-purpose measurement control messages or system message, has indicated the co-frequency cell that will measure and the id information of sub-district in the message that issues;
The sub-district that will measure that described network side issues comprises following two kinds of situations: the one, and the classification sub-district comprises: same frequency layer sub-district, there are identical centre frequency, co-frequency neighbor cell or different frequency layer sub-district in promptly adjacent at least sub-district with Serving cell; The 2nd, unclassified sub-district.
Step 5:UE and Target cell are in time T
Radio frame sync timeOr T
Radio frame sync time2In carry out frame synchronization;
Wherein, T
Radio frame sync timeInfluencing factor with among the embodiment one described in the step 3.As: supposing has 4 SCH in the frame, so, UE is if determine frame regularly, need find 4 and/or greater than determining behind 1 SCH, as for finding what SCH can determine at least, need the basis design of SCH at last.Consider the influence of wireless environment, the time of search can be greater than the aforesaid time.
T
Radio frame sync time2Influencing factor comprise: the design of synchronizing channel, the realization of UE.
At this moment, UE knows the id information of sub-district, knows promptly that also the ID under the ID of sub-district organizes, so UE can obtain frame timing information by cyclic shift, promptly UE carries out correlated judgment by the displacement of known code character sequence with the signal of receiving, therefrom obtains frame timing information.
Step 6:UE is in time T
Identify cell ID timeIn carry out relevant by known sub-district id information with the sub-district that searches;
Step 7:, then discern the sub-district if UE finds correlation peak;
If also have other with the adjacent identification sub-district that needs of frequency, then UE repeats the instruction content of said method according to network side, discerns next adjacent sub-district.
Step 8: if do not have, UE continues search cell, repeats above-mentioned steps.
If the time of UE identification sub-district surpasses the time T of maximum identification sub-district
Identify intraThe value scope is not also discerned the sub-district, then abandons discerning this sub-district;
Wherein, T
Identify cell timeThe size of value is relevant with the design of Common Pilot Channel and/or broadcast channel and/or synchronizing channel, depends on which channel identification sub-district UE passes through.
The factor that influences each time value value in the said process is with described in the embodiment one.
Embodiment three as shown in Figure 7, comprises the steps: for the operating process of sub-district in the co-frequency neighbor cell list of recognition network indication
Wherein, step 1 to step 5 with the operation among the embodiment one;
Step 6:UE is in time T
Identify cell ID timeIn carry out relevant by the sub-district id information in the known Neighboring Cell List with the sub-district that searches;
Step 7: if UE finds correlation peak, then the sub-district is discerned in expression;
If also have Unidentified sub-district in the Neighboring Cell List, then repeat aforesaid operations, continue the Unidentified sub-district of search.
Step 8: if the two is uncorrelated, and total recognition time has surpassed the time T of maximum permission
Identify intraThe value scope then stops identification, again search cell and identification.If the time T that the time does not also allow greater than maximum
Identify intraThe value scope was not carried out relevant sub-district if then also exist in the Neighboring Cell List, then chose the next id information of not carrying out the sub-district of being correlated with, repeating step 6;
In above-mentioned process, the factor that influences each time value value is with described in the embodiment one.
The situation of frequency, alien-frequency district together of not distinguishing that embodiment four issues for recognition network, as shown in Figure 8, concrete steps comprise:
Step 1: network side issues special-purpose measuring control information or system message, the sub-district that issues do not indicate co-frequency cell or alien-frequency district or do other classification (such as: with adjacent sub-district of layer or the adjacent sub-district of different layer);
After step 2:UE receives described message, demodulation message, according to the indication of network side in time T
Decisiont imeIn at first judge common frequency measurement or different-frequency measure carried out in first sub-district of this indication, if common frequency measurement, then the step carried out of UE with the step 2 among the embodiment one to step 6; If different-frequency measure is then measured according to the method for different-frequency measure;
Step 3: if also have adjacent sub-district, then UE is according to the instruction content of network side, repeats aforesaid operations, judges and discerns next adjacent sub-district.
In said process, T
Identify unkown cell timeBe the identification sub-district time value scope of the maximum that allows, the factor that influences its value comprises: UE judges whether sign synchronization time and/or frame synchronization time and/or the identification sub-district ID time of time of co-frequency neighbor cell and/or SCH and/or carries out synchronous number of times.
In the various embodiments described above, the process of identification sub-district ID group can be omitted according to actual conditions in practical operation, as, network side has issued the information of sub-district ID, and then UE can carry out the step of identification sub-district ID this moment, knows the timing information of sub-district by methods such as cyclic shifts.
The invention provides in a kind of long evolving system the device of control cell identification, this device is arranged at user equipment side, a kind of embodiment as shown in Figure 9, described device comprises: time value scope determining unit and cell identification control unit.
Described time value scope determining unit is used for determining to control each time value scope of discerning the sub-district process.
Described time value scope determining unit further comprises:
Influence time value scope factor determining unit is used for determining the factor of influence time value scope value;
The time value scope is determined subelement, is used for determining according to the factor of described influence time value scope value the span of each time value of control identification sub-district process.
Described cell identification control unit, each the time value scope control identification sub-district process that is used for determining according to described time value scope determining unit.
Described cell identification control unit further comprises:
The time value comparing unit is used for relatively discerning the time value scope of shared time of each process of sub-district and predetermined each process permission, thereby controls identification each operating process of sub-district.
In sum, the present invention has obtained to influence in the process of identification sub-district the factor of each operating process time value value, comprising: common signal channel design, Common Pilot Channel design, wireless environment, interference, the algorithm of employing, the realization of UE etc.Consider above-mentioned factor, can effectively determine the span of control identification sub-district each time value of process, thereby realize the control of process for cell identification.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (15)
1. the method for control cell identification in the long evolving system is characterized in that, comprising:
Influencing factor according to each time value scope of controlling process for cell identification is determined described each time value scope;
According to described each time value scope control process for cell identification.
2. the method for control cell identification in a kind of long evolving system as claimed in claim 1 is characterized in that the time value scope of described control process for cell identification comprises:
Synchronization channel symbols allows time value scope, frame synchronization to allow time value scope, identification cell ID ID to allow time value scope, identification to measure type synchronously and allows the maximum time value scope that allows of time value scope and/or identification sub-district.
3. the method for control cell identification is characterized in that in a kind of long evolving system as claimed in claim 2, influences described identification sub-district and allows the factor of time value scope to comprise:
Synchronization channel symbols allows time value scope, frame synchronization to allow time value scope, identification sub-district ID to allow the time value scope, carry out synchronous number of times and/or common frequency measurement time density synchronously.
4. the method for control cell identification in a kind of long evolving system as claimed in claim 3, it is characterized in that, it is the signal that subscriber equipment receives district common channel or Common Pilot Channel that described identification sub-district ID allows the time value scope, distinguish according to known sub-district id information, judge and discern the permission time value scope of adjacent sub-district ID, its influencing factor comprises:
The design of subscriber equipment identification employed Common Pilot Channel in sub-district and/or common signal channel.
5. the method for control cell identification in a kind of long evolving system as claimed in claim 3 is characterized in that the computational methods of described common frequency measurement time density comprise:
When measurement is when repeating with fixed sequence program, common frequency measurement time density equals to be used in measuring period the ratio of the time and this section measuring period of common frequency measurement; Or,
When measurement does not have fixed sequence program, at the different radio environment, carry out different-frequency measure by arbitrary extracting a period of time in measuring period repeatedly, and calculate each common frequency measurement time density, get and repeatedly calculate the averaging of income value as common frequency measurement time density.
6. the method for control cell identification in a kind of long evolving system as claimed in claim 1 or 2 is characterized in that the described factor that influences each time value scope comprises:
The algorithm that adopt common signal channel design, Common Pilot Channel design, wireless environment, interference, user equipment searches sub-district, the realization and/or the common frequency measurement time density of subscriber equipment.
7. the method for control cell identification is characterized in that in a kind of long evolving system as claimed in claim 6, and under the situation of not considering wireless environment, described common signal channel design specifically comprises the influence of each time value scope:
When having only a synchronization channel symbols in the radio frames, then subscriber equipment time of finding synchronization channel symbols be synchronization channel symbols regularly, subframe regularly, and frame timing; Or,
When a plurality of synchronization channel symbols is arranged in the radio frames, could determine when then subscriber equipment need find at least one synchronization channel symbols that frame regularly; Or,
Determine frame timing and sub-district ID group in time by frame length of information that broadcast channel carries.
8. the method for control cell identification is characterized in that in a kind of long evolving system as claimed in claim 6, and under the situation of not considering wireless environment, described Common Pilot Channel design specifically comprises the influence of each time value scope:
Determine frame timing and sub-district ID group in time by frame length of pilot signal of down public guide frequency channel.
9. the method for control cell identification is characterized in that in a kind of long evolving system as claimed in claim 6, and the described method of each time value scope control cell identification of utilizing specifically comprises:
Utilize the simultaneous operation of synchronous maximum permission time of synchronization channel symbols, the maximum permission time control of frame synchronization and co-frequency neighbor cell, determine sub-district ID group or sub-district ID;
Utilize identification sub-district ID control identification of maximum permission time sub-district ID process, and utilize the maximum permission time of identification sub-district to control whole identification cell operation.
10. as the method for control cell identification in a kind of long evolving system as described in the claim 9, it is characterized in that the operation of described identification sub-district further comprises:
UE is undertaken relevant by all included in fixed sub-district ID group sub-district ID and the channel that has carried the Target cell id information, if UE discovery correlation peak then can identify the sub-district; If the time of UE identification sub-district surpasses the time of the maximum identification sub-district that allows, then abandon discerning this sub-district.
11. the method as control cell identification in a kind of long evolving system as described in the claim 9 is characterized in that the operation of described identification sub-district further comprises:
UE is being undertaken relevantly by sub-district id information in the known Neighboring Cell List and the sub-district that searches, if UE finds correlation peak, then expression identifies the sub-district; If the two is uncorrelated, and total recognition time surpassed the maximum time that allows of identification sub-district, then stops to discern cell operation; If the time is then chosen the next information of not carrying out relevant sub-district and continues to carry out associative operation also not greater than the maximum time that allows of identification sub-district.
12. the device of control cell identification is characterized in that in the long evolving system, comprising:
Time value scope determining unit is used for determining to control each time value scope of discerning the sub-district process;
The cell identification control unit, each the time value scope control identification sub-district process that is used for determining according to described time value scope determining unit.
13. the device of control cell identification in a kind of long evolving system as claimed in claim 12 is characterized in that described time value scope determining unit further comprises:
Influence time value scope factor determining unit is used for determining the factor of influence time value scope value; And/or,
The time value scope is determined subelement, is used for determining according to the factor of described influence time value scope value the span of each time value of control identification sub-district process.
14. the device of control cell identification in a kind of long evolving system as claimed in claim 12 is characterized in that described cell identification control unit further comprises:
The time value comparing unit is used for relatively discerning the time value scope of shared time of each process of sub-district and predetermined each process permission, thereby controls identification each operating process of sub-district.
15. the device as control cell identification in claim 12, the 13 or 14 described a kind of long evolving systems is characterized in that described device is arranged at user equipment side.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101114378A CN101128032A (en) | 2006-08-18 | 2006-08-18 | A method and device for control cell recognition in long evolved system |
| PCT/CN2007/070487 WO2008022591A1 (en) | 2006-08-18 | 2007-08-15 | A method for controlling the cell identification in lte system and apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101114378A CN101128032A (en) | 2006-08-18 | 2006-08-18 | A method and device for control cell recognition in long evolved system |
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| CN101128032A true CN101128032A (en) | 2008-02-20 |
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| CNA2006101114378A Pending CN101128032A (en) | 2006-08-18 | 2006-08-18 | A method and device for control cell recognition in long evolved system |
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| CN (1) | CN101128032A (en) |
| WO (1) | WO2008022591A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009146582A1 (en) * | 2008-06-02 | 2009-12-10 | Huawei Technologies Co., Ltd. | Method in a wireless communication system |
| CN102196471A (en) * | 2010-03-01 | 2011-09-21 | 上海华为技术有限公司 | Neighboring cell measuring method, device and system |
| CN101801064B (en) * | 2009-02-10 | 2013-06-26 | 电信科学技术研究院 | Method, device and system for recognizing cell and/or cell carrier |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103220702B (en) * | 2012-01-19 | 2016-11-02 | 华为技术有限公司 | Method, device and system for inter-frequency cell measurement |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4181938B2 (en) * | 2003-07-28 | 2008-11-19 | 日本電気株式会社 | Asynchronous cellular mobile station between CDMA base stations and cell search method thereof |
| JP2005136748A (en) * | 2003-10-30 | 2005-05-26 | Kyocera Corp | Mobile communication system, mobile apparatus and base station apparatus |
| US7917140B2 (en) * | 2004-12-06 | 2011-03-29 | Telefonaktiebolaget L M Ericsson (Publ) | Initial cell search in mobile communications systems |
| WO2006067657A1 (en) * | 2004-12-24 | 2006-06-29 | Koninklijke Philips Electronics N.V. | Method and apparatus for cell search in wireless communication system |
| JP2006217051A (en) * | 2005-02-01 | 2006-08-17 | Hitachi Communication Technologies Ltd | Radio communication system and radio base station controller |
-
2006
- 2006-08-18 CN CNA2006101114378A patent/CN101128032A/en active Pending
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- 2007-08-15 WO PCT/CN2007/070487 patent/WO2008022591A1/en active Application Filing
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009146582A1 (en) * | 2008-06-02 | 2009-12-10 | Huawei Technologies Co., Ltd. | Method in a wireless communication system |
| CN102067718A (en) * | 2008-06-02 | 2011-05-18 | 华为技术有限公司 | Method in a wireless communication system |
| CN102067718B (en) * | 2008-06-02 | 2013-06-26 | 华为技术有限公司 | Method in a wireless communication system |
| CN101801064B (en) * | 2009-02-10 | 2013-06-26 | 电信科学技术研究院 | Method, device and system for recognizing cell and/or cell carrier |
| CN102196471A (en) * | 2010-03-01 | 2011-09-21 | 上海华为技术有限公司 | Neighboring cell measuring method, device and system |
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| Publication number | Publication date |
|---|---|
| WO2008022591A1 (en) | 2008-02-28 |
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