WO2012055342A1 - Procédé de transfert de cellule, procédé de mesure, dispositif et système - Google Patents

Procédé de transfert de cellule, procédé de mesure, dispositif et système Download PDF

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Publication number
WO2012055342A1
WO2012055342A1 PCT/CN2011/081215 CN2011081215W WO2012055342A1 WO 2012055342 A1 WO2012055342 A1 WO 2012055342A1 CN 2011081215 W CN2011081215 W CN 2011081215W WO 2012055342 A1 WO2012055342 A1 WO 2012055342A1
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WIPO (PCT)
Prior art keywords
signal quality
neighboring
value
standard deviation
cell
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PCT/CN2011/081215
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English (en)
Chinese (zh)
Inventor
宋平
杨利
季莉
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华为技术有限公司
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Publication of WO2012055342A1 publication Critical patent/WO2012055342A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H04W36/0094—Definition of hand-off measurement parameters

Definitions

  • the embodiments of the present invention relate to communication technologies, and in particular, to a cell handover method, a measurement method, a device, and a system. Background technique
  • the 3rd-Generation Partnership Project (hereinafter referred to as 3GPP) Long Term Evolution (LTE) system
  • UE User Equipment
  • 3GPP 3rd-Generation Partnership Project
  • LTE Long Term Evolution
  • UE User Equipment
  • the handover preparation phase the physical layer of the UE periodically detects the signal quality of the serving cell and the neighboring cell. After the physical layer filtering process, the physical layer periodically sends a radio resource control protocol (Radio Resource Control; hereinafter referred to as RRC).
  • RRC Radio Resource Control
  • the layer reports the filter line filtering process, and the UE reports the signal quality of the neighboring cell that meets the reporting condition to the evolved base station (Evolved Node B; hereinafter referred to as eNB), and the eNB determines the cell handover according to the signal quality after the filtering process.
  • eNB evolved base station
  • the network side sends a measurement control message through the base station, and carries a filter coefficient in the measurement control message, and the filter coefficient is for all neighboring cells.
  • An aspect of the present invention provides a cell handover method, including: sending a first measurement control message to a user equipment, where the first measurement control message carries a first reporting threshold and a filter coefficient corresponding to each neighboring cell, at least two of which are The neighboring area corresponds to a different filter coefficient; receiving, by the user equipment, a signal quality value of each neighboring area that meets the first reporting threshold, where the signal quality value of each neighboring area is a filter coefficient corresponding to the neighboring area of the user equipment.
  • Another aspect of the present invention provides a cell measurement method, including: acquiring, according to a measurement control message sent by a base station, a signal quality value of each neighboring cell, where the measurement control message carries a first reporting threshold; The signal quality value obtains the filter coefficients corresponding to the neighboring cells; the signal quality values of the neighboring cells are respectively filtered according to the filter coefficients corresponding to the neighboring cells; and the filtering processing of each neighboring region that satisfies the first reporting threshold The subsequent signal quality value is reported to the above base station.
  • a further aspect of the present invention provides a base station, including: a first sending unit, configured to send a first measurement control message to a user equipment, where the first measurement control message carries a first reporting threshold and a corresponding neighboring area a filter coefficient, wherein at least two neighboring cells correspond to different filter coefficients; a first receiving unit, configured to receive, by the user equipment, a signal quality value of each neighboring cell that meets the first reporting threshold, and the signal quality of each neighboring cell The value is obtained by the user equipment filtering the measured signal quality values of the neighboring areas according to the filter coefficients corresponding to the neighboring areas, and the switching unit is configured to meet the first report according to the reporting by the user equipment.
  • the signal quality value of each neighboring cell of the threshold performs a cell handover decision.
  • a further aspect of the present invention provides a user equipment, including: a first acquiring unit, configured to acquire, according to a measurement control message sent by a base station, a signal quality value of each neighboring cell, where the measurement control message carries a first reporting threshold; a second obtaining unit, configured to obtain a plurality of signal quality values according to each of the neighboring regions
  • the filter unit is configured to filter the signal quality values of the neighboring cells according to the filter coefficients corresponding to the neighboring cells, and the reporting unit is configured to meet the first reporting threshold.
  • the filtered signal quality values of each neighboring cell are reported to the above base station.
  • Yet another aspect of the present invention provides a wireless communication system including the above base station.
  • Yet another aspect of the present invention provides a wireless communication system including the above user equipment.
  • the cell handover method, the measurement method, the device, and the system in the embodiment of the present invention the base station sends different filter coefficients corresponding to different neighboring cells to the user equipment, and the user equipment compares the measured signal quality values of each neighboring cell according to different filter coefficients. After performing the filtering process, the signal quality value of the neighboring cell that meets the first reporting threshold is reported to the base station, and the base station performs a cell handover decision according to the signal quality value.
  • This embodiment uses different filtering coefficients for different neighboring cells to solve the present problem. In the prior art, all the neighboring cells use the same filter coefficient to perform the filtering process, which is inaccurate in the handover judgment, and improves the accuracy of the base station for the d and zone handover decision.
  • Embodiment 1 is a flowchart of Embodiment 1 of a cell handover method according to the present invention
  • Embodiment 2 is a signaling diagram of Embodiment 2 of a cell handover method according to the present invention
  • Embodiment 3 is a signaling diagram of Embodiment 3 of a cell handover method according to the present invention.
  • Embodiment 4 is a flowchart of Embodiment 1 of a cell measurement method according to the present invention.
  • FIG. 5 is a signaling diagram of Embodiment 2 of a cell measurement method according to the present invention.
  • Embodiment 1 of a base station is a schematic structural diagram of Embodiment 1 of a base station according to the present invention.
  • Embodiment 7 is a schematic structural diagram of Embodiment 2 of a base station according to the present invention.
  • FIG. 8 is a schematic structural diagram of Embodiment 1 of a user equipment according to the present invention
  • FIG. 9 is a schematic structural diagram of Embodiment 2 of a user equipment according to the present invention.
  • FIG. 1 is a flowchart of Embodiment 1 of a cell handover method according to the present invention. As shown in FIG. 1 , this embodiment provides a cell handover method, which may specifically include the following content.
  • the base station sends a first measurement control message (for example, a Measurement Control message) to the user equipment, where the first measurement control message carries a first reporting threshold and a filtering coefficient corresponding to each neighboring cell, where at least two neighboring areas are different. Filter coefficient.
  • a Measurement Control message for example, a Measurement Control message
  • the first measurement control message sent by the base station to the user equipment carries the first reporting threshold and the filtering coefficient.
  • the first reporting threshold may be a reporting threshold of the handover determining event
  • the filtering coefficient is a filtering coefficient corresponding to different neighboring cells, and may be different filtering coefficients corresponding to at least two different neighboring cells, where the filtering coefficient may be based on an empirical value. Select.
  • the first measurement control message and the first reporting threshold are both distinguished from the second measurement control message and the second reporting threshold in the subsequent embodiments, and have no other special meanings, and will not be further described later.
  • the base station receives, by the user equipment, a signal quality value of each neighboring cell that meets the first reporting threshold, where the signal quality value of each neighboring cell is measured by the user equipment according to a filter coefficient corresponding to each neighboring cell.
  • the signal quality value of the neighboring area is obtained after filtering.
  • the user equipment After receiving the first measurement control message, the user equipment first measures the signals of each neighboring area, and performs filtering processing on the signals of each neighboring area according to the filter coefficients corresponding to the neighboring areas to obtain the filtered signal quality corresponding to each neighboring area. And determining whether the filtered signal quality value satisfies the first reporting threshold carried in the first measurement control message, and if yes, reporting to the base station that the signal quality value is satisfied. among them, The signal quality value may include a reference signal received power (RSRP) value and a reference signal received quality (hereinafter referred to as RSRQ) value.
  • RSRP reference signal received power
  • RSRQ reference signal received quality
  • the base station performs a cell handover decision according to the signal quality value of each neighboring cell that is reported by the user equipment and meets the first reporting threshold.
  • the base station After receiving the signal quality value of each neighboring cell that is reported by the user equipment and satisfying the first reporting threshold, the base station performs a cell handover decision according to the signal quality value.
  • the filtering coefficient sent by the base station to the user equipment in this embodiment is that the non-home equipment is sent to different neighboring areas, and not all the neighboring areas in the prior art correspond to the same filtering coefficient, therefore, the neighboring area acquired by the base station
  • the signal quality value is obtained by filtering according to the corresponding filter coefficient.
  • the base station performs the cell handover decision according to the signal quality value, the neighboring area signals of different change rules are filtered to different degrees, so that the handover decision is more accurate.
  • the embodiment provides a cell handover method, in which the base station sends different filter coefficients corresponding to at least two different neighboring cells to the user equipment, and the user equipment filters the measured signal quality values of the neighboring cells according to different filter coefficients. Then, the signal quality value of the neighboring cell that meets the first reporting threshold is reported to the base station, and the cell handover decision is performed, which solves the problem that the switching decision by using the same filtering coefficient for all neighboring cells is not determined in the prior art. Accurate defects improve the accuracy of the base station's decision on cell handover.
  • Embodiment 2 is a signaling diagram of Embodiment 2 of a cell handover method according to the present invention. As shown in FIG. 2, this embodiment provides a specific cell handover method.
  • the base station uses an evolved base station eNB as an example, and may specifically include the following content.
  • the eNB sends a second measurement control message to the UE, where the second measurement control message carries a second reporting threshold.
  • the eNB on the network side sends a second quantity control message to the UE, and the second measurement control message carries the second reporting threshold, where the second The second reporting threshold is a reporting threshold of the measurement event, which is lower than the first reporting threshold, that is, lower than the reporting threshold of the handover determination event.
  • the filter coefficients carried in the second measurement control message are the same for all neighboring cells.
  • the reporting mode may be set to an event-transition period, and the corresponding number of times of reporting and the reporting period may be set, and the number of reporting times and the reporting period may be configured according to actual required precision, and the specific configuration value is Reference may be made to the relevant definition in 3GPP TS 36.331, wherein the number of times of reporting may be multiple times.
  • the UE measures, according to the second measurement control message, a signal of each neighboring cell.
  • the UE After receiving the second measurement control message, the UE measures the signals of each neighboring cell according to the second measurement control message, and obtains the signal quality value of each neighboring cell. The UE may further filter the measured neighboring cell signal according to the unified filter coefficient carried in the second measurement control message, and obtain the filtered signal quality value corresponding to each neighboring cell.
  • the UE sends, to the eNB, the filtered signal quality values corresponding to the neighboring areas that meet the second reporting threshold.
  • the UE After obtaining the filtered signal quality value corresponding to each neighboring cell, the UE determines whether it meets the second reporting threshold, that is, whether it is greater than the reporting threshold of the measurement event. If yes, the UE will meet the neighboring areas of the second reporting threshold.
  • the signal quality value is reported to the eNB, for example, periodically reported.
  • the reporting mode of the UE is an event-transition period, that is, after the signal quality value of a neighboring cell meets the reporting threshold of the measurement event, the signal quality value of the neighboring cell is periodically reported.
  • the eNB acquires, according to the received multiple signal quality values of each neighboring cell, a filter coefficient corresponding to each neighboring cell.
  • the eNB may separately acquire the filtering coefficients corresponding to each neighboring cell according to the received multiple signal quality values of each neighboring cell.
  • the specific acquisition mode of the filter coefficient may be: selecting the optimal filter coefficient according to the specific requirement of combining the filtered signal standard deviation and the degree of deviation between the filtered signal value and the signal value before filtering.
  • the step 204 may specifically include the following steps: First, the eNB utilizes different filtering.
  • the coefficient performs filtering processing on the signal quality values of the neighboring cells that are reported by the user equipment that meet the second reporting threshold, and obtains the filtered signal quality value sequence corresponding to the neighboring cells in the different filtering coefficients.
  • the value range is specifically defined in the 3GPP TS 36.331 standard.
  • a plurality of different filter coefficients are selected to simulate the filter respectively.
  • the filter coefficient in this embodiment is specifically the filter coefficient K.
  • the 20 signal quality values reported by a UE in a neighboring cell may be used as an example.
  • the eNB first uses different filter coefficients to filter 20 signal quality values of each neighboring cell according to a preset filtering formula to obtain different
  • the filtered signal quality value sequence corresponding to each neighboring cell under the filter coefficient for example, the filtering formula herein may be a filtering formula defined in the 3GPP TS 36.331 standard.
  • the eNB calculates a standard deviation of the filtered signal quality value sequence corresponding to each of the neighboring cells, and generates a first standard deviation of signal quality values of each neighboring cell.
  • the eNB calculates a standard deviation of the difference between the filtered signal quality value and the pre-filtered signal quality value, and generates a second standard deviation value of the signal quality value of each neighboring cell.
  • the eNB calculates the product of the first standard deviation value and the second standard deviation value of each neighboring cell under different filter coefficients. Finally, the eNB uses, as the filter coefficient corresponding to each neighboring cell, a filter coefficient corresponding to a maximum value of a product of the first standard difference value of the neighboring cells in the different filter coefficients and the second standard deviation value.
  • the eNB sends a first measurement control message to the UE, where the first measurement control message carries a first reporting threshold and a filtering coefficient corresponding to each neighboring cell, where at least two neighboring cells correspond to different filtering coefficients.
  • the first measurement control message is sent to the UE, where the first measurement control message is a new measurement control message for the second measurement control message in the foregoing step.
  • the first measurement control message carries the first reporting threshold and the different filtering coefficients corresponding to the acquired different neighboring cells.
  • the first measurement control message may specifically include a correspondence between different neighboring cells and a filter coefficient, that is, a correspondence between a neighboring zone ID and a filter coefficient, where the neighboring zone ID may be a physical identifier of the neighboring zone. (Phy ID) can also be the global cell identification code (CGI) of the neighboring area.
  • the filter coefficient can be specifically the filter coefficient! ⁇ 206.
  • the UE updates the filter coefficient according to the first measurement control message.
  • the UE After receiving the first measurement control message, the UE updates the locally saved corresponding filter coefficients according to the filter coefficients corresponding to the neighboring cells carried therein. This step is optional.
  • the UE performs filtering processing on the measured signal quality values of the neighboring cells according to the filter coefficients corresponding to the neighboring cells, and obtains the filtered signal quality values of the neighboring cells.
  • the UE filters the measured signal quality values of the neighboring cells by using the filter coefficients corresponding to the neighboring cells, and obtains the filtered signal quality values corresponding to the neighboring cells.
  • the UE reports the filtered signal quality value corresponding to the neighboring cell that meets the first reporting threshold to the eNB.
  • the UE After obtaining the signal quality value of each neighboring cell, the UE determines whether it meets the first reporting threshold, that is, whether it is greater than the reporting threshold of the handover determination event. If yes, the UE will satisfy the signal quality value of the neighboring region of the first reporting threshold. Report to the eNB.
  • the eNB performs a cell handover decision according to the signal quality value reported by the UE.
  • the eNB After receiving the signal quality value of each neighboring cell reported by the UE, the eNB performs a cell handover decision according to the signal quality value.
  • the eNB obtains different filter coefficients corresponding to different neighboring cells according to the neighboring cell signal quality value reported by the UE in real time, and not all neighboring cells in the prior art all correspond to the same filter coefficient. Therefore, the eNB acquires the neighboring cell.
  • the signal quality value of the region is obtained by filtering according to the filter coefficient corresponding to each neighboring cell.
  • the eNB may use the change rule of the signal of the neighboring cell as the basis, thereby making the handover The judgment is more accurate.
  • the eNB may be configured with a UE-level filter coefficient for each UE, or may be configured with a cell-level filter coefficient for all UEs. For example, when the number of UEs is small, the UE-level filter coefficients are configured.
  • the eNB obtains the filter coefficients corresponding to the different neighboring cells according to the signal quality values of the different neighboring cells reported by the UE1 and the UE2, respectively, and sends them to the UE1 and If the number of the UEs is large, the eNB may first obtain the filter coefficients corresponding to the neighboring cells according to the signal quality values reported by the UEs, and then acquire the same neighboring cells according to the signal quality values reported by the multiple UEs, for example, at least 20 UEs.
  • Multiple filter coefficients are processed to obtain cell-level filter coefficients, for example, there are 20 UEs
  • the signal quality values of the neighboring cell 1 are reported separately, and the eNB obtains 20 filter coefficients of the neighboring cell 1 according to the signal quality values reported by the 20 UEs, and the eNB averages the 20 filter coefficients, and averages the filter coefficients.
  • the filter coefficient of the neighboring area 1 it is sent to all UEs.
  • the embodiment provides a cell handover processing method, in which the base station sends different filter coefficients corresponding to different neighboring cells to the user equipment, and the user equipment filters the measured signal quality values of the neighboring cells according to different filter coefficients.
  • the filtered signal quality value corresponding to each neighboring cell that meets the first reporting threshold is reported to the base station, and the base station performs a cell handover decision according to the signal quality value.
  • This embodiment uses different filtering coefficients for different neighboring cells to solve the present problem. In the prior art, the defect that the handover determination is inaccurate by using the same filter coefficient for all neighboring cells is improved, and the accuracy of the base station for cell handover decision is improved.
  • FIG. 3 is a signaling diagram of Embodiment 3 of a cell handover method according to the present invention. As shown in FIG. 3, this embodiment provides a specific cell handover method, which may specifically include the following content.
  • the eNB sends a measurement control message to the UE, where the measurement control message carries a first reporting threshold and a filtering coefficient corresponding to each neighboring cell, where at least two neighboring cells respectively correspond to different filtering coefficients.
  • the eNB on the network side sends a measurement control message to the UE, and the measurement control message carries the first reporting threshold and the filter coefficient, where
  • the first reporting threshold is a reporting threshold of the switching judgment event, and at least two different neighboring cells use different filtering coefficients.
  • the difference between this embodiment and the above-mentioned second embodiment is that the different filter coefficients are not re-fitted, and the empirical value is selected, that is, the filter coefficients can be selected according to different cell boundary signal variation characteristics and experience.
  • the measurement control message in this step may specifically include a correspondence between at least two different neighboring cells and a filter coefficient, that is, a correspondence between a neighboring zone ID and a filter coefficient, where the neighboring zone ID may be a physical identifier Phy ID of the neighboring zone. It can also be the CGI of the neighborhood.
  • the UE performs filtering processing on the measured signal quality values of each neighboring cell according to the filter coefficients corresponding to the neighboring cells.
  • the UE filters the measured signal quality values of the neighboring cells by using the filter coefficients corresponding to the neighboring cells, and obtains the filtered signal quality values corresponding to the neighboring cells. 303.
  • the UE reports the filtered signal quality value corresponding to the neighboring cell that meets the first reporting threshold to the eNB.
  • the UE After obtaining the filtered signal quality value corresponding to each neighboring cell, the UE determines whether it meets the first reporting threshold, that is, whether it is greater than the reporting threshold of the handover determination event. If yes, the UE will satisfy the neighboring region of the first reporting threshold. The signal quality value is reported to the eNB.
  • the eNB performs a cell handover decision according to the signal quality value reported by the UE.
  • the eNB After receiving the signal quality value of each neighboring cell reported by the UE, the eNB performs a cell handover decision according to the signal quality value. Since the filter coefficients sent by the eNB to the UE in the present embodiment are different filter coefficients acquired for at least two different neighboring cells, instead of all neighboring cells in the prior art, the same filter coefficient is used, and therefore, the neighbor acquired by the eNB The signal quality value of the area is obtained by filtering according to the corresponding filter coefficient. When the eNB performs the cell handover decision according to the signal quality value, the eNB may use the change rule of the signal of the neighboring area to make the handover decision more accurate. .
  • the present embodiment provides a cell handover method, in which a base station sends different filter coefficients corresponding to at least two different neighboring cells to a user equipment, and the user equipment filters the measured neighboring cell signals according to different filter coefficients, and then The signal quality value of the neighboring cell that meets the first reporting threshold is reported to the base station, and the base station performs a cell handover decision according to the signal quality value.
  • This embodiment uses different filtering coefficients for different neighboring cells, and solves all neighbors in the prior art. The defect that the handover judgment is inaccurate due to the filtering process using the same filter coefficient improves the accuracy of the base station for the cell handover decision.
  • FIG. 4 is a flowchart of Embodiment 1 of a cell measurement method according to the present invention. As shown in FIG. 4, this embodiment provides a cell measurement method, which may specifically include the following content.
  • the user equipment acquires a signal quality value of each neighboring area according to the measurement control message sent by the base station, where the measurement control message carries a first reporting threshold.
  • the base station on the network side sends a measurement control message to the user equipment, and the measurement control message may carry the first reporting threshold, that is, the handover. Determine the reporting threshold of the event.
  • the user equipment according to the measurement control message to each neighboring area The signal is measured and the signal quality values of each neighborhood are obtained.
  • the user equipment acquires different filter coefficients corresponding to the neighboring cells according to the multiple signal quality values of each neighboring cell.
  • the user equipment obtains the signal quality value of each neighboring cell, and obtains different filter coefficients corresponding to the neighboring cell for the multiple signal quality values acquired by the same neighboring cell.
  • the specific acquisition method refer to step 204 above.
  • the user equipment performs filtering processing on the signal quality value of the neighboring area according to the filter coefficient corresponding to each neighboring area.
  • the user equipment After obtaining the obtained filter coefficients of the cells, the user equipment filters the measured neighboring cells according to different filter coefficients, and further obtains the filtered signal quality values corresponding to the neighboring cells.
  • the user equipment reports the filtered signal quality value corresponding to each neighboring cell that meets the first reporting threshold to the base station.
  • the user equipment reports the filtered signal quality value corresponding to each neighboring cell that meets the first reporting threshold to the base station, and the base station performs a cell handover decision according to the filtered signal quality value.
  • the process of acquiring the filter coefficients corresponding to the neighboring cells is performed on the user equipment side.
  • the UE obtains the filter coefficients according to the measured signal quality in real time, and uses the neighboring cells for different neighboring areas.
  • Different filter coefficients instead of all neighboring cells in the prior art, all correspond to the same filter coefficient. Therefore, the signal quality value of the neighboring cell acquired by the base station is obtained by filtering processing according to its corresponding filter coefficient, and the base station according to When the signal quality value is subjected to the decision processing of the cell handover, the signal quality values of the neighboring cells with different variation laws are filtered to different degrees, so that the handover decision is more accurate.
  • This embodiment provides a cell measurement method, where a user equipment obtains a signal quality value of each neighboring cell according to a measurement control message, and obtains a filter coefficient corresponding to different neighboring cells according to multiple signal quality values, and then according to different filter coefficient pairs. After the measured signal of the neighboring cell is filtered, the signal quality value of the neighboring cell that meets the first reporting threshold is reported to the base station, and the base station can according to a more accurate signal. The quality value is used to determine the cell handover.
  • different filter coefficients are used for different neighboring cells, which solves the problem that the switching process caused by filtering the same filter coefficients in all neighboring cells in the prior art is not Accurate defects improve the accuracy of the base station's d and zone handover decisions.
  • FIG. 5 is a signaling diagram of Embodiment 2 of a cell measurement method according to the present invention. As shown in FIG. 5, this embodiment provides a specific cell measurement method, which may specifically include the following content.
  • the UE receives the measurement control message sent by the eNB, where the measurement control message carries the first reporting threshold.
  • the eNB on the network side After the UE accesses, reselects, or switches to the new cell, the eNB on the network side sends a measurement control message to the UE, where the measurement control message carries the first reporting threshold, where the first reporting threshold is the switching judgment.
  • the reporting threshold of the event is the case where the UE accesses, reselects, or switches to the new cell.
  • the UE measures, according to the measurement control message, a signal of each neighboring cell.
  • the UE After receiving the measurement control message, the UE measures the signal of each neighboring area according to the measurement control message. In this embodiment, the UE may obtain a corresponding multiple signal quality value for one neighboring cell.
  • the UE obtains, according to the received multiple signal quality values of each neighboring cell, a filter coefficient corresponding to each neighboring cell.
  • the UE obtains the filter coefficients corresponding to each neighboring cell according to the obtained multiple signal quality values of the neighboring cells.
  • the specific acquisition mode of the filter coefficient may be: selecting an optimal filter coefficient according to a specific requirement combined with the filtered signal standard deviation and the degree of deviation between the filtered signal value and the pre-filtered signal value.
  • the method 503 may include the following steps: First, the UE filters, by using different filter coefficients, the signal quality values of the neighboring cells that are reported by the user equipment that meet the second reporting threshold, and obtains the foregoing
  • the filtered signal quality value corresponding to each neighboring region is ⁇
  • the filter coefficient the value range is specifically defined in the 3GPP TS 36.331 standard.
  • a plurality of different filter coefficients are selected to simulate the filter respectively.
  • the filter coefficient in this embodiment is specifically the filter coefficient K.
  • the UE may report the 20 signal quality values of a neighboring cell as an example.
  • the UE first uses different filter coefficients to obtain the neighboring regions according to a preset filtering formula.
  • the 20 signal quality values are filtered to obtain the filtered signal quality value sequence corresponding to each neighboring cell under different filter coefficients, and the filtering formula here may also be the filtering formula defined in the 3GPP TS 36.331 standard.
  • the UE separately calculates the standard deviation of the filtered signal quality value sequence corresponding to each of the neighboring cells, and generates a first standard deviation of the signal quality values of each neighboring cell.
  • the eNB calculates the standard deviation of the difference between the filtered signal quality value and the pre-filtered signal quality value, and generates a second standard deviation value of the signal quality value of each neighboring cell.
  • the UE separately calculates the product of the first standard deviation value and the second standard deviation value of each neighboring cell under different filter coefficients.
  • the UE uses, as the filter coefficient corresponding to each neighboring cell, a filter coefficient corresponding to a maximum value of a product of the first standard difference value of the neighboring cells in the different filter coefficients and the second standard deviation value.
  • the UE performs filtering processing on the measured signal quality values of the neighboring cells according to the filter coefficients corresponding to the neighboring cells, and obtains the filtered signal quality values corresponding to the neighboring cells.
  • the UE filters the measured signal quality values of the neighboring cells by using the filter coefficients corresponding to the neighboring cells, and obtains the filtered signal quality values corresponding to the neighboring cells.
  • the UE reports the filtered signal quality value corresponding to the neighboring cell that meets the first reporting threshold to the eNB.
  • the UE After obtaining the signal quality value of each neighboring cell, the UE determines whether it meets the first reporting threshold, that is, whether it is greater than the reporting threshold of the handover determination event. If yes, the UE will satisfy the signal quality value of the neighboring region of the first reporting threshold. Report to the eNB. After receiving the signal quality value of each neighboring cell reported by the UE, the eNB performs a decision process on the cell handover according to the signal quality value.
  • the filter coefficients for filtering the signal quality values of the neighboring cells are different filter coefficients obtained for different neighboring cells, and not all neighboring cells in the prior art correspond to the same filter coefficient.
  • the signal quality value of the neighboring cell obtained by the eNB is obtained by filtering processing according to the corresponding filter coefficient.
  • the eNB may use the change rule of the signal of the neighboring cell as the basis. , thus making the handover decision more accurate.
  • This embodiment provides a cell measurement method, where a user equipment obtains a signal quality value of each neighboring area according to a measurement control message, and acquires a filtering system corresponding to different neighboring areas according to multiple signal quality values. And filtering the signal of the neighboring cell according to the different filtering coefficients, and reporting the signal quality value of the neighboring cell that meets the first reporting threshold to the base station, so that the base station can use the more accurate signal quality value for the cell.
  • the handover performs the decision processing.
  • different filter coefficients are used for different neighboring cells, which solves the defect that the handover determination caused by the filtering processing of all the neighboring cells is the same in the prior art, and improves the defect. The accuracy of the base station's decision on d and zone handover.
  • FIG. 6 is a schematic structural diagram of Embodiment 1 of a base station according to the present invention.
  • the base station provided in this embodiment may include a first sending unit 601, a first receiving unit 602, and a switching unit 603.
  • the first sending unit 601 is configured to send a first measurement control message to the user equipment, where the first measurement control message carries a first reporting threshold and a filtering coefficient corresponding to each neighboring area, where at least two neighboring areas correspond to Different filter coefficients.
  • the first receiving unit 602 is configured to receive, by the user equipment, a signal quality value of each neighboring cell that meets the first reporting threshold, where the signal quality value of the neighboring cell is measured by the user equipment according to the filter coefficient corresponding to the neighboring cell.
  • the signal quality values of the neighboring cells are filtered and processed.
  • the switching unit 603 is configured to perform a cell handover decision according to the signal quality value of each neighboring cell that is reported by the user equipment and meets the foregoing first reporting threshold.
  • FIG. 7 is a schematic structural diagram of Embodiment 2 of a base station according to the present invention.
  • the base station provided in this embodiment may further include a second sending unit 604, a second receiving unit 605, and a first acquiring unit 606.
  • the second sending unit 604 is configured to: before the sending the measurement control message to the user equipment, send a second measurement control message to the user equipment, where the second measurement control message carries the second reporting threshold, where the second The reporting threshold is lower than the first reporting threshold.
  • the second receiving unit 605 is configured to receive the foregoing user equipment report A plurality of signal quality values of the neighboring cells satisfying the second reporting threshold.
  • the first obtaining unit 606 is configured to separately acquire the filter coefficients corresponding to the neighboring cells according to the signal quality values of the neighboring cells that meet the second reporting threshold that are reported by the user equipment.
  • the first obtaining unit 606 in the base station may specifically include a filtering subunit 616, a first calculating subunit 626, a second calculating subunit 636, a third calculating subunit 646, and a selecting subunit 656.
  • the filtering sub-unit 616 is configured to filter, by using different filter coefficients, the signal quality values of the neighboring cells that meet the second reporting threshold reported by the user equipment, and obtain the corresponding neighboring regions corresponding to the different filtering coefficients.
  • the first calculating sub-unit 626 is configured to separately calculate a standard deviation of the filtered signal quality value sequence corresponding to each of the neighboring cells, and generate a first standard deviation value of the signal quality values of the neighboring cells.
  • the second calculating sub-unit 636 is configured to separately calculate a standard deviation of a difference sequence between the filtered signal quality value corresponding to each neighboring cell and the pre-filtering signal quality value, and generate a second standard deviation of signal quality values of each neighboring cell. value.
  • the third calculating sub-unit 646 is configured to separately calculate a product of the first standard deviation value and the second standard deviation value of the neighboring cells in different filter coefficients.
  • the selecting sub-unit 656 is configured to use, as the filter coefficients corresponding to the neighboring regions, the filter coefficients corresponding to the maximum values of the products of the first standard difference values of the neighboring cells in the different filter coefficients and the second standard deviation.
  • the base station provided in this embodiment may further include a second acquiring unit, where the second acquiring unit is configured to average multiple filter coefficients corresponding to the same neighboring area reported by the multiple user equipments, and obtain filtering corresponding to the same neighboring area. coefficient.
  • the embodiment provides a base station, and the base station sends a filter coefficient corresponding to different neighboring areas to the user equipment, and the user equipment filters the measured neighboring area according to different filter coefficients, and then satisfies the first reporting threshold.
  • the signal quality value of the neighboring cell is reported to the base station, and the base station performs cell handover decision according to the signal quality value.
  • This embodiment uses different filter coefficients for different neighboring cells, which solves the same problem in the prior art for all neighboring cells.
  • the filter coefficient performs the filtering process and the defect of the handover judgment is inaccurate, which improves the accuracy of the base station for the cell handover decision.
  • FIG. 8 is a schematic structural diagram of Embodiment 1 of a user equipment according to the present invention, as shown in FIG. A user equipment is provided, and the steps in the fourth embodiment of the foregoing method are specifically performed, and details are not described herein again.
  • the user equipment provided in this embodiment may include a first obtaining unit 801, a second obtaining unit 802, a filtering unit 803, and a reporting unit 804.
  • the first obtaining unit 801 is configured to obtain a signal quality value of each neighboring cell according to the measurement control message sent by the base station, where the measurement control message carries a first reporting threshold.
  • the second obtaining unit 802 is configured to acquire different filter coefficients corresponding to each neighboring cell according to the multiple signal quality values of the neighboring cells.
  • the filtering unit 803 is configured to separately filter the signal quality values of the neighboring cells according to the filter coefficients corresponding to the neighboring cells.
  • the reporting unit 804 is configured to report the filtered signal quality value of each neighboring cell that meets the first reporting threshold to the base station.
  • FIG. 9 is a schematic structural diagram of Embodiment 2 of a user equipment according to the present invention. As shown in FIG. 9 , this embodiment provides a user equipment, which may specifically perform the steps in Embodiment 5 of the foregoing method, and details are not described herein again.
  • the user equipment provided in this embodiment is based on the foregoing FIG. 8.
  • the second obtaining unit 802 may specifically include a filtering subunit 812, a first computing subunit 822, a second computing subunit 832, and a third computing subunit. 842 and selection subunit 852.
  • the filtering sub-unit 812 is configured to perform filtering processing on the acquired multiple signal quality values of the neighboring cells by using different filtering coefficients, and obtain the filtered signal quality value sequence corresponding to the neighboring cells in the different filtering coefficients.
  • the first calculating sub-unit 822 is configured to separately calculate a standard deviation of the filtered signal quality value sequence corresponding to each of the neighboring cells, and generate a first standard deviation value of each of the neighboring cells.
  • the second calculating sub-unit 832 is configured to separately calculate a standard deviation of a difference sequence between the filtered signal quality value corresponding to each of the neighboring cells and the signal quality value before filtering, and generate a second standard deviation value of each of the neighboring cells.
  • the third calculating sub-unit 842 is configured to respectively calculate a product of the first standard deviation value and the second standard deviation value of the neighboring cells in the different filter coefficients.
  • the selecting sub-unit 852 is configured to use, as the filter coefficients corresponding to the neighboring regions, the filter coefficients corresponding to the maximum values of the product of the first standard deviation value and the second standard deviation value of the neighboring cells in the foregoing different filter coefficients. .
  • the user equipment obtains the signal quality value of each neighboring area according to the measurement control message by using the user equipment, and obtains the filter coefficients corresponding to different neighboring areas according to the multiple signal quality values, and then measures according to different filter coefficients. After the signal of the neighboring zone is filtered, it will satisfy the first
  • the signal quality value of the neighboring area of the reporting threshold is reported to the base station, and the base station can perform the decision processing on the cell handover according to the more accurate signal quality value.
  • This embodiment uses different filtering coefficients for different neighboring areas, and solves the problem in the prior art. All the neighboring cells use the same filter coefficient to perform the filtering process, which is inaccurate in the handover judgment, and improves the accuracy of the base station for the cell handover decision.
  • the embodiment further provides a wireless communication system, which may include the base station shown in FIG. 6 or FIG. 7 above.
  • a corresponding user equipment can also be included.
  • This embodiment further provides another wireless communication system, which may include the user equipment shown in FIG. 8 or FIG. 9 above.
  • a corresponding base station can also be included.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé de transfert de cellule, un procédé de mesure, un dispositif et un système. Le procédé de transfert de cellule comprend : l'envoi d'un premier message de commande de mesure à un équipement utilisateur (UE), le premier message de mesure portant un premier seuil de rapport et un coefficient de filtrage de chaque cellule voisine, et au moins deux cellules voisines correspondent à différents coefficients de filtrage ; la réception d'une valeur de qualité de signal de chaque cellule voisine satisfaisant le premier seuil de rapport déclaré par l'UE, la valeur de qualité de signal de chaque cellule voisine étant obtenue après que l'UE filtre la valeur de qualité de signal mesurée selon les coefficients de filtrage correspondant aux cellules voisines ; et la détermination du transfert de cellule selon la valeur de qualité de signal de chaque cellule voisine satisfaisant le premier seuil de rapport déclaré par l'UE. Le mode de réalisation de la présente invention permet au nœud B évolué de déterminer le transfert de cellule d'une manière plus précise.
PCT/CN2011/081215 2010-10-27 2011-10-25 Procédé de transfert de cellule, procédé de mesure, dispositif et système WO2012055342A1 (fr)

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CN103517352B (zh) * 2012-06-30 2016-08-31 华为技术有限公司 小区切换控制方法、小区切换方法以及装置和系统
WO2014040277A1 (fr) * 2012-09-14 2014-03-20 华为技术有限公司 Procédé de gestion de la mobilité, station de base et équipement d'utilisateur
CN104145504A (zh) 2012-09-20 2014-11-12 华为技术有限公司 测量控制方法、用户设备、控制节点及系统
CN105517013B (zh) * 2015-11-25 2019-06-21 南京扬舟信息科技有限公司 一种邻区关系识别方法
CN106231626B (zh) * 2016-07-15 2019-11-26 华为技术有限公司 一种发送测量报告的方法及装置
CN109121169B (zh) * 2017-06-23 2021-04-13 中国移动通信有限公司研究院 一种系统信息发送方法、接收方法、基站和移动通信终端
EP4037370A1 (fr) * 2017-12-11 2022-08-03 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Procédé de configuration de paramètres de mesure d'équipement utilisateur, équipement utilisateur et équipement de réseau
CN110858975B (zh) * 2018-08-23 2023-03-14 北京小米松果电子有限公司 邻区主频点的信号质量测量方法、装置、介质及电子设备

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