CN101959207A - Method and device for measuring neighboring cell - Google Patents
Method and device for measuring neighboring cell Download PDFInfo
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- CN101959207A CN101959207A CN2009100551198A CN200910055119A CN101959207A CN 101959207 A CN101959207 A CN 101959207A CN 2009100551198 A CN2009100551198 A CN 2009100551198A CN 200910055119 A CN200910055119 A CN 200910055119A CN 101959207 A CN101959207 A CN 101959207A
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Abstract
The embodiment of the invention discloses a method and a device for measuring a neighboring cell. The method comprises the following steps of: receiving a downlink pilot time slot (DwPTS) signal; eliminating interference of a known same frequency interference cell and measuring received signal code power (RSCP) of a cell to be measured based on the DwPTS signal so as to acquire first RSCP; selecting a same frequency interference cell of the cell to be measured from the neighboring cell corresponding to a synchronization downlink (SYNC-DL) code; when an unknown neighboring cell which is not configured on a network side occurs in the same frequency interference cell, eliminating the interference of an unknown same frequency interference cell and measuring the RSCP of the cell to be measured based on the DwPTS signal so as to acquire second RSCP; and judging whether the original RSCP of the cell to be measured is reliable or not, correcting the original RSCP of the cell to be measured according to the first RSCP and the second RSCP and acquiring the observed time difference (OTD) of the cell to be measured according to the second RSCP if the original RSCP of the cell to be measured is unreliable. According to the embodiment of the invention, error switching and error reselection of a target cell by user equipment (UE) can be avoided.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of method of measurement and device of adjacent sub-district.
Background technology
At TD-SCDMA (Time Division-Synchronization Code Division MultipleAccess, Time Division-Synchronous Code Division Multiple Access) in the system, as UE (User Eauipment, when subscriber equipment) under service connected state, carrying out the switching of Target cell, can relate to measurement to the handoff parameter of each adjacent sub-district.The handoff parameter of adjacent sub-district mainly comprises Target cell P-CCPCH (Primary CommonControl Physical Channel, first Common Control Physical Channel) RSCP (Received SignalCode Power, received signal code power) and the OTD of two minizones (Observed TimeDifference, observed time difference).Wherein, the quality evaluation when RSCP is used to switch is promptly carried out feasibility assessment according to handoff threshold to the RSCP that measures each adjacent sub-district, final definite Target cell that can switch; OTD is used to switch to the quick timing adjustment behind the Target cell.
In the prior art, in measuring process to P-CCPCH RSCP, when receiving TS0 (Timeslot#0, time slot 0) behind the Midamble sign indicating number of signal, perhaps, in measuring process to OTD, when receiving DwPTS (Downlink Pilot Time Slot, descending pilot frequency time slot) behind the signal, all need to choose earlier the measurement sub-district that comprises sub-district to be measured and inter-frequency interference cell, handle through eliminating co-channel interference again, eliminate inter-frequency interference cell, obtain sub-district to be measured, measure the RSCP and the OTD of sub-district to be measured at last.
But, the inventor finds under study for action, the inter-frequency interference cell of selecting in the prior art is the network side configuration, for example, network side is chosen 6 adjacent sub-districts as measuring the sub-district, after therefrom having determined sub-district to be measured from all adjacent sub-districts of current service cell, just with other adjacent sub-districts except that sub-district to be measured in 6 selected adjacent sub-districts as inter-frequency interference cell, because 6 adjacent sub-districts are that network side is pre-configured, therefore, inter-frequency interference cell is pre-configured too.But, if there is the high power co-frequency cell in real network in covering, and, this high power co-frequency cell is not again in the pre-configured adjacent set of cells of network side the time, then this high power co-frequency cell can not be used as inter-frequency interference cell and eliminate, and then cause UE that there is gross error in the measurement of RSCP and OTD, finally cause UE that the mistake of Target cell is switched.Equally, when UE carries out the gravity treatment of Target cell under notconnect state, the inter-frequency interference cell of selecting in the prior art also is that network side is pre-configured, causes UE that there is gross error in the measurement of RSCP and OTD, finally also can cause the mistake gravity treatment of UE to Target cell.
Summary of the invention
The embodiment of the invention provides a kind of method of measurement of adjacent sub-district, to avoid UE the mistake of Target cell is switched and the mistake gravity treatment.
In order to solve the problems of the technologies described above, embodiments of the invention provide following technical scheme:
The embodiment of the invention discloses a kind of method of measurement of adjacent sub-district, comprising: receive descending pilot frequency time slot DwPTS signal, described DwPTS signal comprises 32 groups of down-going synchronous SYNC-DL sign indicating numbers; Eliminate the interference of the pre-configured known inter-frequency interference cell of network side, and, obtain a RSCP based on the received signal code power RSCP of described DwPTS signal measurement sub-district to be measured; From with the pairing adjacent sub-district of described SYNC-DL sign indicating number filter out the inter-frequency interference cell of described sub-district to be measured; When occurring the not pre-configured unknown adjacent sub-district of network side in the described inter-frequency interference cell, eliminate the interference of unknown inter-frequency interference cell, and, obtain the 2nd RSCP based on the RSCP of the described sub-district to be measured of described DwPTS signal measurement; Whether the original RSCP that judges described sub-district to be measured is reliable, if not, revise the original RSCP of described sub-district to be measured according to a described RSCP and the 2nd RSCP, and obtain the OTD of described sub-district to be measured according to described the 2nd RSCP, after the interference of the original RSCP of described sub-district to be measured for the described known inter-frequency interference cell of elimination, based on the first Common Control Physical Channel P-CCPCH RSCP of the measured sub-district to be measured of the Midamble sign indicating number of TS0 signal.
Preferably, described from the pairing adjacent sub-district of SYNC-DL sign indicating number filter out described sub-district to be measured inter-frequency interference cell comprise: from the pairing adjacent sub-district of described SYNC-DL sign indicating number, filter out and eliminate the adjacent sub-district of the measured RSCP in known inter-frequency interference cell interference back greater than threshold value, described threshold value is the RSCP of current service cell; From the adjacent sub-district of described RSCP, be the inter-frequency interference cell of described sub-district to be measured by strong adjacent sub-district to weak selective sequential preset number according to RSCP greater than threshold value.
Preferably, described from the pairing adjacent sub-district of SYNC-DL sign indicating number filter out described sub-district to be measured inter-frequency interference cell comprise: search the inter-frequency interference cell with the pairing adjacent sub-district of SYNC-DL sign indicating number, and eliminate the interference of the inter-frequency interference cell of described and the pairing adjacent sub-district of SYNC-DL sign indicating number respectively; Eliminate after the interference of inter-frequency interference cell RSCP with the pairing adjacent sub-district of described SYNC-DL sign indicating number based on the DwPTS signal measurement respectively; From with the pairing adjacent sub-district of described SYNC-DL sign indicating number, filter out the adjacent sub-district of RSCP measured after the interference of eliminating inter-frequency interference cell greater than threshold value, described threshold value is the RSCP of current service cell; After the interference of described elimination inter-frequency interference cell, the measured adjacent sub-district of RSCP, be the inter-frequency interference cell of described sub-district to be measured by strong adjacent sub-district to weak selective sequential preset number according to RSCP greater than threshold value.
Preferably, the described inter-frequency interference cell of searching with the pairing adjacent sub-district of SYNC-DL sign indicating number comprises: 32 groups of SYNC-DL sign indicating numbers are carried out relevant peaks scanning respectively, obtain the RSCP of adjacent sub-district; Is inter-frequency interference cell with the pairing adjacent sub-district of current SYNC-DL sign indicating number according to RSCP by strong adjacent sub-district to weak selective sequential preset number.
Preferably, describedly judge whether the original RSCP of sub-district to be measured reliably comprises: calculate the mean value of RSCP of the inter-frequency interference cell of described sub-district to be measured, obtain average RSCP, and described the 2nd RSCP and described average RSCP are asked the merchant, obtain peak-to-average force ratio; Whether judge described peak-to-average force ratio less than 1, if then the original RSCP of described sub-district to be measured is unreliable, if not, then the original RSCP of described sub-district to be measured is reliable.
Preferably, the described original RSCP that revises described sub-district to be measured according to a RSCP and the 2nd RSCP is specially: described the 2nd RSCP and a RSCP are asked poor; Difference and described original RSCP summation with the 2nd RSCP and a RSCP obtain the described final P-CCPCHRSCP in sub-district to be measured.
The embodiment of the invention also discloses a kind of measurement mechanism of adjacent estate performance, comprising: receiving element, be used to receive descending pilot frequency time slot DwPTS signal, described DwPTS signal comprises 32 groups of down-going synchronous SYNC-DL sign indicating numbers; The one RSCP measuring unit is used to eliminate the interference of the pre-configured known inter-frequency interference cell of network side, and based on the RSCP of described DwPTS signal measurement sub-district to be measured, obtains a RSCP; The screening unit is used for from filtering out the inter-frequency interference cell of described sub-district to be measured with the pairing adjacent sub-district of described SYNC-DL sign indicating number; The 2nd RSCP measuring unit is used for eliminating the interference of unknown inter-frequency interference cell when the not pre-configured unknown adjacent sub-district of network side appears in described inter-frequency interference cell, and based on the RSCP of the described sub-district to be measured of described DwPTS signal measurement, obtains the 2nd RSCP; Amending unit, be used to judge whether the original RSCP of described sub-district to be measured is reliable, if not, revise the original RSCP of described sub-district to be measured according to a described RSCP and the 2nd RSCP, and obtain the OTD of described sub-district to be measured according to described the 2nd RSCP, after the interference of the original RSCP of described sub-district to be measured for the described known inter-frequency interference cell of elimination, based on the first Common Control Physical Channel P-CCPCH RSCP of the measured sub-district to be measured of the Midamble sign indicating number of time slot 0TS0 signal.
Preferably, described screening unit comprises: the first screening subelement, be used for from the pairing adjacent sub-district of described SYNC-DL sign indicating number, filter out and eliminate known inter-frequency interference cell and disturb the adjacent sub-district of the measured RSCP in back greater than threshold value, described threshold value is the RSCP of current service cell; The first chooser unit is used for from the adjacent sub-district of described RSCP greater than threshold value, is the inter-frequency interference cell of described sub-district to be measured according to RSCP by strong adjacent sub-district to weak selective sequential preset number; Perhaps, eliminate subelement, be used to search the inter-frequency interference cell with the pairing adjacent sub-district of SYNC-DL sign indicating number, and eliminate the interference of the inter-frequency interference cell of described and the pairing adjacent sub-district of SYNC-DL sign indicating number respectively; Second measures subelement, is used for respectively eliminating after the interference of inter-frequency interference cell RSCP with the pairing adjacent sub-district of described SYNC-DL sign indicating number based on the DwPTS signal measurement; The second screening subelement, be used for from the pairing adjacent sub-district of described SYNC-DL sign indicating number, filter out the adjacent sub-district of RSCP measured after the interference of eliminating inter-frequency interference cell greater than threshold value, described threshold value is the RSCP of current service cell; The second chooser unit is used for the adjacent sub-district of RSCP measured after the interference of described elimination inter-frequency interference cell greater than threshold value, is the inter-frequency interference cell of described sub-district to be measured according to RSCP by strong adjacent sub-district to weak selective sequential preset number.
Preferably, described amending unit comprises: peak-to-average force ratio obtains subelement, is used to calculate the mean value of RSCP of the inter-frequency interference cell of described sub-district to be measured, and described the 2nd RSCP and described average RSCP are asked the merchant, obtains peak-to-average force ratio; Whether judgment sub-unit is used to judge described peak-to-average force ratio less than 1, if then the original RSCP of described sub-district to be measured is unreliable, if not, then the original RSCP of described sub-district to be measured is reliable; Revise subelement, be used for revising the original RSCP of described sub-district to be measured, and obtain the OTD of described sub-district to be measured according to described the 2nd RSCP according to a described RSCP and the 2nd RSCP.
Preferably, described correction subelement comprises: ask poor subelement, be used for described the 2nd RSCP and a RSCP are asked poor; The summation subelement is used for difference and described original RSCP summation with the 2nd RSCP and a RSCP, obtains the final P-CCPCH RSCP in described sub-district to be measured.
As can be seen from the above-described embodiment, determine the inter-frequency interference cell of sub-district to be measured in the whole adjacent cell range of the current service cell that the SYNC-DL sign indicating number from descending pilot frequency time slot DwPTS signal is indicated, avoid when adopting the pre-configured inter-frequency interference cell of network side, because existing in real network covers is not the pre-configured high power co-frequency cell of network side, and the mistake that causes is switched or the generation of mistake gravity treatment phenomenon.Reduced to greatest extent strong unknown adjacent sub-district in the network to the terminal communication band influence, improved the robustness of adjacent cell measurement, reduced that mistake is switched, the probability of mistake gravity treatment.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of an embodiment of the method for measurement of a kind of adjacent sub-district of the present invention;
Fig. 2 is the flow chart of another embodiment of the method for measurement of a kind of adjacent sub-district of the present invention;
Fig. 3 is a kind of method flow diagram of determining the inter-frequency interference cell of sub-district to be measured in the embodiment of the invention;
Fig. 4 is the structure chart of an embodiment of the method for measurement of a kind of adjacent sub-district of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the embodiment of the invention is described in detail below in conjunction with accompanying drawing.
Embodiment one
See also Fig. 1, it is the flow chart of an embodiment of the method for measurement of a kind of adjacent sub-district of the present invention, and this method may further comprise the steps:
Step 101: receive the DwPTS signal, described DwPTS signal comprises 32 groups of SYNC-DL (Synchronization Downlink, down-going synchronous) sign indicating number;
Step 102: eliminate the interference of described known inter-frequency interference cell, and, obtain a RSCP based on the RSCP of the described sub-district to be measured of described DwPTS signal measurement;
Step 103: from the pairing adjacent sub-district of described SYNC-DL sign indicating number filter out the inter-frequency interference cell of described sub-district to be measured;
Step 104: when occurring the not pre-configured unknown adjacent sub-district of network side in the described inter-frequency interference cell, eliminate the interference of unknown inter-frequency interference cell, and, obtain the 2nd RSCP based on the RSCP of the described sub-district to be measured of described DwPTS signal measurement;
Step 105: whether the original RSCP that judges described sub-district to be measured is reliable, if not, enters step 106;
Wherein, after the interference of the original RSCP of described sub-district to be measured for the described known inter-frequency interference cell of elimination, based on the P-CCPCH RSCP of the measured sub-district to be measured of the Midamble sign indicating number of TS0 signal.
Step 106: revise the original RSCP of described sub-district to be measured according to a described RSCP and the 2nd RSCP, and obtain the OTD of described sub-district to be measured according to described the 2nd RSCP.
As can be seen from the above-described embodiment, compared with prior art, the embodiment of the invention has the following advantages: the inter-frequency interference cell of determining sub-district to be measured in the whole adjacent cell range of the current service cell that the SYNC-DL sign indicating number from descending pilot frequency time slot DwPTS signal is indicated, avoid when adopting the pre-configured inter-frequency interference cell of network side, because existing in real network covers is not the pre-configured high power co-frequency cell of network side, and the mistake that causes is switched or the generation of mistake gravity treatment phenomenon.Reduced to greatest extent strong unknown adjacent sub-district in the network to the terminal communication band influence, improved the robustness of adjacent cell measurement, reduced that mistake is switched, the probability of mistake gravity treatment.
Embodiment two
See also Fig. 2, it is the flow chart of another embodiment of the method for measurement of a kind of adjacent sub-district of the present invention, present embodiment is described in detail in that current service cell carries out that the sub-district is switched or during the gravity treatment of sub-district, to the method for measurement of adjacent estate performance, this method may further comprise the steps:
Step 201: terminal resident TD-SCDMA sub-district or carry out the TD-SCDMA business, obtain the configuration information of the adjacent sub-district of network;
Step 202: start the measuring process of adjacent estate performance, receive descending pilot frequency time slot DwPTS signal;
Wherein, the DwPTS signal comprises 64chips totally 32 groups down-going synchronous SYNC-DL sign indicating number, 32chips protection clearance G P is respectively arranged, altogether 128chips before and after the SYNC-DL sign indicating number.
Step 203: eliminate the interference of the pre-configured known inter-frequency interference cell of network side, and eliminate the received signal code power RSCP of adjacent sub-district corresponding with the SYNC-DL sign indicating number after the interference of inter-frequency interference cell based on above-mentioned DwPTS signal measurement;
Wherein, in the configuration information of the adjacent sub-district of network, include the known inter-frequency interference cell of network side configuration, for example, behind the SYNC-DL sign indicating number of 32 groups of scannings, corresponding each SYNC-DL sign indicating number all has an adjacent sub-district, has 32 adjacent sub-districts, adjacent sub-district 0, adjacent sub-district 1 ... until adjacent sub-district 31.Sub-district to be measured is set in proper order according to measuring by turns, if current sub-district to be measured is adjacent sub-district 0, and the known inter-frequency interference cell of network configuration is adjacent sub-district 1 and adjacent sub-district 2, after then eliminating the interference of known inter-frequency interference cell, based on the RSCP of DwPTS signal measurement each the adjacent sub-district corresponding with the SYNC-DL sign indicating number.Wherein, the RSCP of sub-district to be measured is a RSCP;
Step 204: from the pairing adjacent sub-district of described SYNC-DL sign indicating number, filter out the adjacent sub-district of RSCP measured after the interference of eliminating inter-frequency interference cell greater than threshold value, described threshold value is the RSCP of current service cell;
Step 205: after the interference of described elimination inter-frequency interference cell, the measured adjacent sub-district of RSCP, be the inter-frequency interference cell of described sub-district to be measured by strong adjacent sub-district to weak selective sequential preset number according to RSCP greater than threshold value;
Wherein, preset number is by the disposal ability decision of terminal, and the embodiment of the invention does not limit its concrete numerical value.
Need to prove that also step 204 and step 205 determine that the process of the inter-frequency interference cell of sub-district to be measured can also be realized by following mode, see also Fig. 3, it is a kind of method flow diagram of determining the inter-frequency interference cell of sub-district to be measured in the embodiment of the invention.
Step 301 is searched the inter-frequency interference cell with the pairing adjacent sub-district of SYNC-DL sign indicating number, and eliminates the interference of the inter-frequency interference cell of described and the pairing adjacent sub-district of SYNC-DL sign indicating number;
Wherein, can carry out relevant peaks scanning respectively to 32 groups of SYNC-DL sign indicating numbers earlier, obtain the RSCP of adjacent sub-district, then according to RSCP by the inter-frequency interference cell of strong sub-district to weak selective sequential preset number as each adjacent sub-district, and eliminate the interference of the inter-frequency interference cell of this neighbour sub-district.
Step 302 is eliminated after the interference of inter-frequency interference cell RSCP with the pairing adjacent sub-district of described SYNC-DL sign indicating number based on the DwPTS signal measurement respectively; Step 303, from the pairing adjacent sub-district of described SYNC-DL sign indicating number, filter out the adjacent sub-district of RSCP measured after the interference of eliminating inter-frequency interference cell greater than threshold value, described threshold value is the RSCP of current service cell;
Step 304 the measured adjacent sub-district of RSCP greater than threshold value, is the inter-frequency interference cell of described sub-district to be measured according to RSCP by strong adjacent sub-district to weak selective sequential preset number after the interference of described elimination inter-frequency interference cell.
Behind the inter-frequency interference cell of having determined sub-district to be measured, proceed to measure in the method flow of adjacent cell measurement.
Step 206: judge in the inter-frequency interference cell of sub-district to be measured the unknown adjacent sub-district that network does not dispose whether occurs, if, enter step 208, if not, enter step 207;
Wherein, if after the screening through above-mentioned steps 204 and step 205, the inter-frequency interference cell of the sub-district of determining to be measured is adjacent sub-district 18 and adjacent sub-district 19, and the pre-configured known inter-frequency interference cell of network is adjacent sub-district 1 and adjacent sub-district 2, therefore, the unknown adjacent sub-district that network does not dispose appears in the inter-frequency interference cell of sub-district to be measured, otherwise, if after the screening of above-mentioned steps 204 and step 205, the inter-frequency interference cell of the sub-district of determining to be measured is adjacent sub-district 1 and adjacent sub-district 2, does not then occur the unknown adjacent sub-district that network does not dispose in the inter-frequency interference cell of sub-district to be measured.
Step 207: original RSCP and the original OTD to sub-district to be measured do not revise process ends;
Wherein, after the interference of the original RSCP of sub-district to be measured for the described known inter-frequency interference cell of elimination, based on the P-CCPCH RSCP of the measured sub-district to be measured of the Midamble sign indicating number of TS0 signal, original OTD is poor for the time of reception that the relevant peaks position according to original RSCP obtains.Promptly, in measuring process to RSCP, after receiving the TS0Midamble signal, perhaps, in measuring process to OTD, after receiving descending pilot frequency time slot DwPTS signal, all need to choose earlier the measurement sub-district that comprises sub-district to be measured and inter-frequency interference cell, handle through eliminating co-channel interference again, eliminate inter-frequency interference cell, obtain sub-district to be measured, measure the RSCP and the OTD of sub-district to be measured at last.
Need to prove, the present invention does not limit original RSCP and the original OTD time of implementation of utilizing said method to measure sub-district to be measured, can before the embodiment of the invention, finish the original RSCP of sub-district to be measured and the measuring process of original OTD, also can measure simultaneously, can also in the implementation of the embodiment of the invention, finish measurement with the embodiment of the invention.
Step 208: eliminate the interference of unknown inter-frequency interference cell, and, obtain the 2nd RSCP based on the RSCP of the described sub-district to be measured of DwPTS signal measurement;
Step 209: whether the original RSCP that judges described sub-district to be measured is reliable, if, enter step 210, if not, enter step 211;
Wherein, whether the original RSCP that judges sub-district to be measured reliably comprises:
The first, calculate the mean value of RSCP of the inter-frequency interference cell of described sub-district to be measured, obtain average RSCP, promptly
P
iBe the RSCP of inter-frequency interference cell, P
AvgBe the mean value of the RSCP of inter-frequency interference cell, N is the number of inter-frequency interference cell.
The second, described the 2nd RSCP and described average RSCP are asked the merchant, obtain peak-to-average force ratio, i.e. R
Pa=P
Precise/ P
Avg, P
PreciseBe the 2nd RSCP, R
PaBe peak-to-average force ratio.
The 3rd, whether judge described peak-to-average force ratio less than 1, if then the original RSCP of described sub-district to be measured is unreliable, if not, then the original RSCP of described sub-district to be measured is reliable.
Step 210: revise the original RSCP of described sub-district to be measured according to a described RSCP and the 2nd RSCP, and obtain the OTD of described sub-district to be measured, process ends according to described the 2nd RSCP;
Wherein, when original RSCP is unreliable, according to formula RSCP
Mod=RSCP
Org+ P
Precise-P
RawOriginal RSCP is revised RSCP
OrgBe the original RSCP of sub-district to be measured, RSCP
ModBe sub-district to be measured through the RSCP after the correcting process, the time of reception that obtains according to the relevant peaks position of the 2nd RSCP is poor simultaneously.
Step 211:, the original RSCP to sub-district to be measured does not revise, and obtains the OTD of described sub-district to be measured, process ends according to described the 2nd RSCP.
Wherein, when original RSCP is reliable, continue to continue to use original RSCP, simultaneously the time of reception that obtains according to the relevant peaks position of the 2nd RSCP is poor.
As can be seen from the above-described embodiment, compared with prior art, the embodiment of the invention has the following advantages: the inter-frequency interference cell of determining sub-district to be measured in the whole adjacent cell range of the current service cell that the SYNC-DL sign indicating number from descending pilot frequency time slot DwPTS signal is indicated, avoid when adopting the pre-configured inter-frequency interference cell of network side, because existing in real network covers is not the pre-configured high power co-frequency cell of network side, and the mistake that causes is switched or the generation of mistake gravity treatment phenomenon.Reduced to greatest extent strong unknown adjacent sub-district in the network to the terminal communication band influence, improved the robustness of adjacent cell measurement, reduced that mistake is switched, the probability of mistake gravity treatment.
In addition, owing to sub-district to be measured relevant peaks calculating is carried out in the co-channel interference influence of having eliminated the strongest N adjacent sub-district, make the result more accurately and reliably; Carry out choosing of inter-frequency interference cell according to the RSCP measurement result of revising, improve the performance of business time-slot demodulation; Carry out the measurement of adjacent sub-district OTD according to the data after the interference eliminated, improve measurement accuracy; According to the 3GPP specifications recommend, only corresponding 1 the Basic Midamble sign indicating number of 1 SYNC-DL sign indicating number of actual networking adopts SYNC-DL sign indicating number method for scanning, because compare the Midamble sign indicating number, the SYNC-DL sign indicating number is shorter, code character quantity still less, thereby reduced terminal overheads.
Embodiment three
Corresponding with the method for measurement of above-mentioned a kind of adjacent sub-district, the embodiment of the invention also provides a kind of measurement mechanism of adjacent sub-district.See also Fig. 4, it is an example structure figure of the measurement mechanism of a kind of adjacent sub-district of the present invention, and this device comprises receiving element 401, a RSCP measuring unit 402, screening unit 403, the 2nd RSCP measuring unit 404 and amending unit 405.Operation principle below in conjunction with this device is further introduced its internal structure and annexation.
Receiving element 401 is used to receive descending pilot frequency time slot DwPTS signal, and described DwPTS signal comprises 32 groups of down-going synchronous SYNC-DL sign indicating numbers;
The one RSCP measuring unit 402 is used to eliminate the interference of the pre-configured known inter-frequency interference cell of network side, and based on the RSCP of described DwPTS signal measurement sub-district to be measured, obtains a RSCP;
The 2nd RSCP measuring unit 404, be used for when the not pre-configured unknown adjacent sub-district of network side appears in described inter-frequency interference cell, eliminate the interference of unknown inter-frequency interference cell, and, obtain the 2nd RSCP based on the RSCP of the described sub-district to be measured of described DwPTS signal measurement;
Amending unit 405, be used to judge whether the original RSCP of described sub-district to be measured is reliable, if not, revise the original RSCP of described sub-district to be measured according to a described RSCP and the 2nd RSCP, and obtain the observed time difference OTD of described sub-district to be measured according to described the 2nd RSCP, after the interference of the original RSCP of described sub-district to be measured for the described known inter-frequency interference cell of elimination, based on the P-CCPCH RSCP of the measured sub-district to be measured of the Midamble sign indicating number of TS0 signal.
Wherein, above-mentioned screening unit 403 comprises: the first screening subelement 4031 and the first chooser unit 4032,
The first screening subelement 4031, be used for from the pairing adjacent sub-district of described SYNC-DL sign indicating number, filter out and eliminate known inter-frequency interference cell and disturb the adjacent sub-district of the measured RSCP in back greater than threshold value, described threshold value is the RSCP of current service cell;
The first chooser unit 4032 is used for from the adjacent sub-district of described RSCP greater than threshold value, is the inter-frequency interference cell of described sub-district to be measured according to RSCP by strong adjacent sub-district to weak selective sequential preset number;
Perhaps, above-mentioned screening unit 403 also can be by forming with lower unit:
Eliminate subelement, be used to search the inter-frequency interference cell with the pairing adjacent sub-district of SYNC-DL sign indicating number, and eliminate the interference of the inter-frequency interference cell of described and the pairing adjacent sub-district of SYNC-DL sign indicating number respectively; Second measures subelement, is used for respectively eliminating after the interference of inter-frequency interference cell RSCP with the pairing adjacent sub-district of described SYNC-DL sign indicating number based on the DwPTS signal measurement;
The second screening subelement, be used for from the pairing adjacent sub-district of described SYNC-DL sign indicating number, filter out the adjacent sub-district of RSCP measured after the interference of eliminating inter-frequency interference cell greater than threshold value, described threshold value is the RSCP of current service cell;
The second chooser unit is used for the adjacent sub-district of RSCP measured after the interference of described elimination inter-frequency interference cell greater than threshold value, is the inter-frequency interference cell of described sub-district to be measured according to RSCP by strong adjacent sub-district to weak selective sequential preset number.
Above-mentioned amending unit 405 comprises: peak-to-average force ratio obtains subelement 4051, judgment sub-unit 4052 and revises subelement 4053,
Peak-to-average force ratio obtains subelement 4051, is used to calculate the mean value of RSCP of the inter-frequency interference cell of described sub-district to be measured, and described the 2nd RSCP and described average RSCP are asked the merchant, obtains peak-to-average force ratio;
Whether judgment sub-unit 4052 is used to judge described peak-to-average force ratio less than 1, if then the original RSCP of described sub-district to be measured is unreliable, if not, then the original RSCP of described sub-district to be measured is reliable;
Revise subelement 4053, be used for revising the original RSCP of described sub-district to be measured, and obtain the OTD of described sub-district to be measured according to described the 2nd RSCP according to a described RSCP and the 2nd RSCP.
Wherein, revising subelement 4053 further comprises:
Ask poor subelement, be used for described the 2nd RSCP and a RSCP are asked poor;
The summation subelement is used for difference and described original RSCP summation with the 2nd RSCP and a RSCP, obtains the final P-CCPCH RSCP in described sub-district to be measured.
As can be seen from the above-described embodiment, as can be seen from the above-described embodiment, compared with prior art, the embodiment of the invention has the following advantages: the inter-frequency interference cell of determining sub-district to be measured in the whole adjacent cell range of the current service cell that the SYNC-DL sign indicating number from descending pilot frequency time slot DwPTS signal is indicated, avoid when adopting the pre-configured inter-frequency interference cell of network side, because existing in real network covers is not the pre-configured high power co-frequency cell of network side, and the mistake that causes is switched or the generation of mistake gravity treatment phenomenon.Reduced to greatest extent strong unknown adjacent sub-district in the network to the terminal communication band influence, improved the robustness of adjacent cell measurement, reduced that mistake is switched, the probability of mistake gravity treatment.
In addition, owing to sub-district to be measured relevant peaks calculating is carried out in the co-channel interference influence of having eliminated the strongest N adjacent sub-district, make the result more accurately and reliably; Carry out choosing of inter-frequency interference cell according to the RSCP measurement result of revising, improve the performance of business time-slot demodulation; Carry out the measurement of adjacent sub-district OTD according to the data after the interference eliminated, improve measurement accuracy; According to the 3GPP specifications recommend, only corresponding 1 the Basic Midamble sign indicating number of 1 SYNC-DL sign indicating number of actual networking adopts SYNC-DL sign indicating number method for scanning, because compare the Midamble sign indicating number, the SYNC-DL sign indicating number is shorter, code character quantity still less, thereby reduced terminal overheads.
Need to prove, one of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random AccessMemory, RAM) etc.
More than the method for measurement and the device of a kind of adjacent sub-district provided by the present invention is described in detail, used specific embodiment herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. the method for measurement of an adjacent sub-district is characterized in that, comprising:
Receive descending pilot frequency time slot DwPTS signal, described DwPTS signal comprises 32 groups of down-going synchronous SYNC-DL sign indicating numbers;
Eliminate the interference of the pre-configured known inter-frequency interference cell of network side, and, obtain a RSCP based on the received signal code power RSCP of described DwPTS signal measurement sub-district to be measured;
From with the pairing adjacent sub-district of described SYNC-DL sign indicating number filter out the inter-frequency interference cell of described sub-district to be measured;
When occurring the not pre-configured unknown adjacent sub-district of network side in the described inter-frequency interference cell, eliminate the interference of unknown inter-frequency interference cell, and, obtain the 2nd RSCP based on the RSCP of the described sub-district to be measured of described DwPTS signal measurement;
Whether the original RSCP that judges described sub-district to be measured is reliable, if not, revise the original RSCP of described sub-district to be measured according to a described RSCP and the 2nd RSCP, and obtain the observed time difference OTD of described sub-district to be measured according to described the 2nd RSCP, after the interference of the original RSCP of described sub-district to be measured for the described known inter-frequency interference cell of elimination, based on the first Common Control Physical Channel P-CCPCH RSCP of the measured sub-district to be measured of the Midamble sign indicating number of TS0 signal.
2. method according to claim 1 is characterized in that, described from the pairing adjacent sub-district of SYNC-DL sign indicating number filter out described sub-district to be measured inter-frequency interference cell comprise:
From with the pairing adjacent sub-district of described SYNC-DL sign indicating number, filter out and eliminate known inter-frequency interference cell and disturb the adjacent sub-district of the measured RSCP in back greater than threshold value, described threshold value is the RSCP of current service cell;
From the adjacent sub-district of described RSCP, be the inter-frequency interference cell of described sub-district to be measured by strong adjacent sub-district to weak selective sequential preset number according to RSCP greater than threshold value.
3. method according to claim 1 is characterized in that, described from the pairing adjacent sub-district of SYNC-DL sign indicating number filter out described sub-district to be measured inter-frequency interference cell comprise:
Search the inter-frequency interference cell with the pairing adjacent sub-district of SYNC-DL sign indicating number, and eliminate the interference of the inter-frequency interference cell of described and the pairing adjacent sub-district of SYNC-DL sign indicating number respectively;
Eliminate after the interference of inter-frequency interference cell RSCP with the pairing adjacent sub-district of described SYNC-DL sign indicating number based on the DwPTS signal measurement respectively;
From with the pairing adjacent sub-district of described SYNC-DL sign indicating number, filter out the adjacent sub-district of RSCP measured after the interference of eliminating inter-frequency interference cell greater than threshold value, described threshold value is the RSCP of current service cell;
After the interference of described elimination inter-frequency interference cell, the measured adjacent sub-district of RSCP, be the inter-frequency interference cell of described sub-district to be measured by strong adjacent sub-district to weak selective sequential preset number according to RSCP greater than threshold value.
4. method according to claim 3 is characterized in that, the described inter-frequency interference cell of searching with the pairing adjacent sub-district of SYNC-DL sign indicating number comprises:
32 groups of SYNC-DL sign indicating numbers are carried out relevant peaks scanning respectively, obtain the RSCP of adjacent sub-district;
Is inter-frequency interference cell with the pairing adjacent sub-district of current SYNC-DL sign indicating number according to RSCP by strong adjacent sub-district to weak selective sequential preset number.
5. method according to claim 1 is characterized in that, describedly judges whether the original RSCP of sub-district to be measured reliably comprises:
Calculate the mean value of RSCP of the inter-frequency interference cell of described sub-district to be measured, obtain average RSCP, and described the 2nd RSCP and described average RSCP are asked the merchant, obtain peak-to-average force ratio;
Whether judge described peak-to-average force ratio less than 1, if then the original RSCP of described sub-district to be measured is unreliable, if not, then the original RSCP of described sub-district to be measured is reliable.
6. method according to claim 1 is characterized in that, the described original RSCP that revises described sub-district to be measured according to a RSCP and the 2nd RSCP is specially:
Described the 2nd RSCP and a RSCP are asked poor;
Difference and described original RSCP summation with the 2nd RSCP and a RSCP obtain the final P-CCPCH RSCP in described sub-district to be measured.
7. the measurement mechanism of an adjacent sub-district is characterized in that, comprising:
Receiving element is used to receive descending pilot frequency time slot DwPTS signal, and described DwPTS signal comprises 32 groups of downlink synchronous sequence SYNC-DL sign indicating numbers;
The one RSCP measuring unit is used to eliminate the interference of the pre-configured known inter-frequency interference cell of network side, and based on the RSCP of described DwPTS signal measurement sub-district to be measured, obtains a RSCP;
The screening unit is used for from filtering out the inter-frequency interference cell of described sub-district to be measured with the pairing adjacent sub-district of described SYNC-DL sign indicating number;
The 2nd RSCP measuring unit is used for eliminating the interference of unknown inter-frequency interference cell when the not pre-configured unknown adjacent sub-district of network side appears in described inter-frequency interference cell, and based on the RSCP of the described sub-district to be measured of described DwPTS signal measurement, obtains the 2nd RSCP;
Amending unit, be used to judge whether the original RSCP of described sub-district to be measured is reliable, if not, revise the original RSCP of described sub-district to be measured according to a described RSCP and the 2nd RSCP, and obtain the OTD of described sub-district to be measured according to described the 2nd RSCP, after the interference of the original RSCP of described sub-district to be measured for the described known inter-frequency interference cell of elimination, based on the first Common Control Physical Channel P-CCPCH RSCP of the measured sub-district to be measured of the Midamble sign indicating number of TS0 signal.
8. device according to claim 7 is characterized in that, described screening unit comprises:
The first screening subelement, be used for from the pairing adjacent sub-district of described SYNC-DL sign indicating number, filter out and eliminate known inter-frequency interference cell and disturb the adjacent sub-district of the measured RSCP in back greater than threshold value, described threshold value is the RSCP of current service cell;
The first chooser unit is used for from the adjacent sub-district of described RSCP greater than threshold value, is the inter-frequency interference cell of described sub-district to be measured according to RSCP by strong adjacent sub-district to weak selective sequential preset number;
Perhaps,
Eliminate subelement, be used to search the inter-frequency interference cell with the pairing adjacent sub-district of SYNC-DL sign indicating number, and eliminate the interference of the inter-frequency interference cell of described and the pairing adjacent sub-district of SYNC-DL sign indicating number respectively;
Second measures subelement, is used for respectively eliminating after the interference of inter-frequency interference cell RSCP with the pairing adjacent sub-district of described SYNC-DL sign indicating number based on the DwPTS signal measurement;
The second screening subelement, be used for from the pairing adjacent sub-district of described SYNC-DL sign indicating number, filter out the adjacent sub-district of RSCP measured after the interference of eliminating inter-frequency interference cell greater than threshold value, described threshold value is the RSCP of current service cell;
The second chooser unit is used for the adjacent sub-district of RSCP measured after the interference of described elimination inter-frequency interference cell greater than threshold value, is the inter-frequency interference cell of described sub-district to be measured according to RSCP by strong adjacent sub-district to weak selective sequential preset number.
9. device according to claim 7 is characterized in that, described amending unit comprises:
Peak-to-average force ratio obtains subelement, is used to calculate the mean value of RSCP of the inter-frequency interference cell of described sub-district to be measured, and described the 2nd RSCP and described average RSCP are asked the merchant, obtains peak-to-average force ratio;
Whether judgment sub-unit is used to judge described peak-to-average force ratio less than 1, if then the original RSCP of described sub-district to be measured is unreliable, if not, then the original RSCP of described sub-district to be measured is reliable;
Revise subelement, be used for revising the original RSCP of described sub-district to be measured, and obtain the OTD of described sub-district to be measured according to described the 2nd RSCP according to a described RSCP and the 2nd RSCP.
10. device according to claim 7 is characterized in that, described correction subelement comprises:
Ask poor subelement, be used for described the 2nd RSCP and a RSCP are asked poor;
The summation subelement is used for difference and described original RSCP summation with the 2nd RSCP and a RSCP, obtains the described final RSCP in sub-district to be measured.
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| CN2009100551198A CN101959207B (en) | 2009-07-17 | 2009-07-17 | Method and device for measuring neighboring cell |
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| CN2009100551198A CN101959207B (en) | 2009-07-17 | 2009-07-17 | Method and device for measuring neighboring cell |
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Cited By (5)
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| WO2014000356A1 (en) * | 2012-06-29 | 2014-01-03 | Qualcomm Incorporated | Td-scdma rscp measurement correlation |
| CN104469815A (en) * | 2013-09-13 | 2015-03-25 | 上海贝尔股份有限公司 | Method for triggering network assisted interference cancellation and suppression and user equipment |
| CN103546191B (en) * | 2013-11-01 | 2015-10-07 | 东南大学 | Universe covers the main synchronizing sequence Interference Cancellation detection method of multi-beam S-LTE |
| CN105472636A (en) * | 2014-09-12 | 2016-04-06 | 中国移动通信集团公司 | Interference neighbor cell determining method and equipment |
| US9699667B2 (en) | 2012-01-09 | 2017-07-04 | Qualcomm Incorporated | Systems and methods to transmit configuration change messages between an access point and a station |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7426390B2 (en) * | 2004-09-10 | 2008-09-16 | Motorola, Inc. | Method and apparatus for efficient neighbor cell measurement |
| CN100399847C (en) * | 2005-02-24 | 2008-07-02 | 大唐移动通信设备有限公司 | Method for measuring adjacent cell |
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- 2009-07-17 CN CN2009100551198A patent/CN101959207B/en active Active
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| US9699667B2 (en) | 2012-01-09 | 2017-07-04 | Qualcomm Incorporated | Systems and methods to transmit configuration change messages between an access point and a station |
| WO2014000356A1 (en) * | 2012-06-29 | 2014-01-03 | Qualcomm Incorporated | Td-scdma rscp measurement correlation |
| CN104469815A (en) * | 2013-09-13 | 2015-03-25 | 上海贝尔股份有限公司 | Method for triggering network assisted interference cancellation and suppression and user equipment |
| CN104469815B (en) * | 2013-09-13 | 2019-04-05 | 上海诺基亚贝尔股份有限公司 | A kind of method and user equipment eliminated and inhibited for triggering network assistance interference |
| CN103546191B (en) * | 2013-11-01 | 2015-10-07 | 东南大学 | Universe covers the main synchronizing sequence Interference Cancellation detection method of multi-beam S-LTE |
| CN105472636A (en) * | 2014-09-12 | 2016-04-06 | 中国移动通信集团公司 | Interference neighbor cell determining method and equipment |
| CN105472636B (en) * | 2014-09-12 | 2019-02-05 | 中国移动通信集团公司 | A kind of interference adjacent area determines method and apparatus |
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| Publication number | Publication date |
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| CN101959207B (en) | 2012-11-28 |
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