WO2014206200A1 - Procédé et dispositif pour estimer une indication de qualité de canal - Google Patents

Procédé et dispositif pour estimer une indication de qualité de canal Download PDF

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Publication number
WO2014206200A1
WO2014206200A1 PCT/CN2014/079715 CN2014079715W WO2014206200A1 WO 2014206200 A1 WO2014206200 A1 WO 2014206200A1 CN 2014079715 W CN2014079715 W CN 2014079715W WO 2014206200 A1 WO2014206200 A1 WO 2014206200A1
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WIPO (PCT)
Prior art keywords
cell
signal quality
neighboring cell
serving cell
abs pattern
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PCT/CN2014/079715
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English (en)
Chinese (zh)
Inventor
周涵
铁晓磊
花梦
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华为技术有限公司
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Publication of WO2014206200A1 publication Critical patent/WO2014206200A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a channel quality indicator estimation method and apparatus.
  • 3GPP 3rd Generation Partnership Project
  • UMTS Universal Mobile Telecommunications System
  • HetNet HetNet technology
  • the traditional radio access network is a single macro network layer
  • the base station in the macro network layer is a macro base station (Marco)
  • HetNet adds one or more micro network layers based on the macro network layer, and the micro network.
  • the base station in the middle is called a micro base station, and is also called a low power node (Low Power Node, LPN for short), so that it can be used for load splitting of the macro base station, improving the quality of service and the throughput of the network.
  • LPN Low Power Node
  • HetNet can use Range Expansion (RE) to expand the coverage of the micro base station.
  • RE Range Expansion
  • the implementation of the area extension may be that the priority of the LPN relative to the macro is increased when the UE performs cell selection, reselection, or switching, so that the user equipment (User Equipment, UE) preferentially resides or accesses the LPN.
  • the RE technology will bring the impact of the interference of the Macro to the UE served by the LPN.
  • the UE preferentially camps or accesses the LPN, the downlink quality of the Macro in the area where the UE is located is better than the downlink of the LPN. The quality of the link, so that UEs in the area will be affected by strong interference from Macro.
  • ABS Almost Blank Subframe
  • RNC Radio Network Controller
  • the Macro schedules the high-speed downlink packet of the UE in the Macro at a higher power according to the ABS pattern on the strong subframe.
  • Access High-Speed The Downlink Packet Access (HSDPA) service stops or reduces the power scheduling HSDPA service on the weak subframe.
  • the LPN schedules the HSDPA service of the UE in the cell center area corresponding to the LPN according to the ABS pattern.
  • the LPN can be based on the ABS.
  • the pattern of the HSDPA service in the cell edge area UE corresponding to the LPN is scheduled on the weak subframe, so that the UE in the cell edge area corresponding to the LPN (that is, the UE still camping or preferentially accessing the LPN) is affected by the macro from the Macro.
  • the impact of strong interference is not limited to the following interferences.
  • HSDPA uses Adaptive Modulation and Coding (AMC) to transmit data efficiently. This requires the UE to estimate the signal to interference plus noise ratio (SINR) of the serving cell. Channel Quality Indication (CQI) and feedback to the base station. The base station selects the current modulation and coding mode that best matches the air interface channel of the UE according to the CQI to transmit downlink data.
  • AMC Adaptive Modulation and Coding
  • CQI Channel Quality Indication
  • the base station selects the current modulation and coding mode that best matches the air interface channel of the UE according to the CQI to transmit downlink data.
  • the HetNet when the Macro neighboring area of the Macro base station also adopts the ABS technology, the downlink channel quality of the UE located at the edge of the Macro also changes with the strong frame of the ABS. If the current subframe is a weak subframe, the UE is neighbored.
  • the estimated SINR value of the UE is high. If the subframes in front of the weak subframe are strong subframes, and the UE is heavily interfered by the neighboring Macro on the strong subframes, the UE is The estimated SINR value is lower. Conversely, if the current subframe is a strong subframe and the previous subframes are weak subframes, the estimated SINR value of the UE is higher, and in this case, the estimated CQI bias of the UE is obtained. Low or high. A higher or lower CQI value reported by the UE to the Macro may cause the Macro to fail to match the downlink channel to schedule data, resulting in reduced channel transmission efficiency or channel transmission failure.
  • Embodiments of the present invention provide a channel quality indicator estimation method and apparatus, which are used to solve the problem in the prior art to estimate an accurate CQI according to a strong subframe and a weak subframe of a first neighboring cell, thereby
  • the Macro base station can match the downlink channel of the cell edge UE to schedule data, improve the channel transmission efficiency of these UEs, or ensure the success rate of the transmission.
  • the embodiment of the present invention provides a channel quality indicator estimation method, including: acquiring, by a user equipment UE, an almost blank subframe ABS pattern of a first neighboring cell in a neighboring cell of a current serving cell, and the first neighboring area and a Describe the timing deviation of the serving cell, where the first neighboring cell is a neighboring cell of the serving cell
  • the ABS pattern is used to indicate the location of the strong subframe and the weak subframe in the time domain
  • the UE determines the signal quality change of the serving cell and the ABS of the first neighboring cell Whether the pattern matches; if the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell, the UE according to the ABS pattern of the first neighboring cell and the first neighboring cell and the service
  • the timing deviation of the cell is subjected to CQI estimation.
  • the user equipment UE acquires an almost blank subframe ABS pattern of the first neighboring cell in the neighboring cell of the current serving cell, and the first neighboring cell and the serving cell.
  • the method further includes: receiving, by the UE, an ABS pattern of all cells in the neighbor cell list of the serving cell sent by the base station, and timing of all cells in the neighbor cell list of the serving cell and the serving cell Deviating; the user equipment UE acquires an almost blank subframe ABS pattern of the first neighboring cell in the neighboring cell of the current serving cell, and a timing offset of the first neighboring cell and the serving cell, where The neighboring cell of the serving cell performs measurement, determines the neighboring cell with the best signal quality as the first neighboring cell, and searches for the ABS pattern corresponding to the neighboring cell with the best signal quality and the neighboring cell with the best signal quality. Timing deviation from the serving cell.
  • the user equipment UE acquires an almost blank subframe ABS pattern of the first neighboring cell in the neighboring cell of the current serving cell, and the first neighboring cell and the serving cell.
  • the timing deviation includes: the UE performs measurement on a neighboring cell of the serving cell, and determines a neighboring cell with the best signal quality as the first neighboring cell; the UE sends a measurement report to the base station, where the measurement report The identifier information of the first neighboring cell is included; the UE receives an ABS pattern of the first neighboring cell sent by the base station, and a timing offset of the first neighboring cell and the serving cell.
  • the UE determines the service Whether the signal quality change of the cell matches the ABS pattern of the first neighboring cell
  • the method includes: determining, by the UE, whether the signal quality of the serving cell changes periodically within a first preset time; If the signal quality changes periodically during the first preset time, the UE determines whether the first preset time is the same as the change period of the ABS pattern of the first neighboring cell; if the first preset time And the same as the change period of the ABS pattern of the first neighboring cell, the UE determines that the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell.
  • the method further includes: if the UE determines, according to a timing deviation of the first neighboring cell and the serving cell, that a change period of a signal quality of the serving cell exists in an ABS pattern of the first neighboring cell a first time corresponding to the weak subframe, and a second time corresponding to the strong subframe in the ABS pattern of the first neighboring cell, the UE determines a signal quality change of the serving cell and the first neighboring cell
  • the ABS pattern is matched; wherein, the change period of the signal quality of the serving cell is the first preset time, the first time is an appearance time of the first signal quality, and the second time is a second signal quality
  • the first signal quality is an average value of signal quality of the serving cell that is greater than the first preset value in a change period of the signal quality of the serving cell, and the second signal
  • the method further includes: determining, by the UE, whether a difference between the first signal quality and the second signal quality is greater than a third preset value; if yes, indicating that the UE determines a signal quality change of the serving cell The ABS pattern matching of the first neighboring area is described.
  • the UE is configured according to the ABS pattern of the first neighboring cell and the first neighboring cell
  • the CQI estimation is performed by the timing offset of the serving cell, including: the UE acquiring an SINR value corresponding to a current subframe; and determining, by the UE, the current subframe and a timing deviation between the first neighboring cell and the serving cell,
  • the subframe corresponds to a strong subframe or a weak subframe in the ABS pattern of the first neighboring cell; if the current subframe corresponds to a strong subframe in the ABS pattern of the first neighboring cell, the UE is according to the foregoing
  • An ABS pattern of a neighboring cell filters the SINR value corresponding to the current subframe and the SINR value of the consecutive first N strong subframes of the current sub
  • an embodiment of the present invention provides a user equipment (UE), including: an acquiring module, configured to: Obtaining an almost blank subframe ABS pattern of the first neighboring cell in the neighboring cell of the current serving cell, and a timing deviation between the first neighboring cell and the serving cell, where the first neighboring cell is in a neighboring cell of the serving cell a cell with the best signal quality, the ABS pattern is used to indicate the location of the strong subframe and the weak subframe in the time domain; the determining module is configured to determine a signal quality change of the serving cell and the first neighboring cell Whether the ABS pattern matches; the processing module is configured to: if the determining module determines that the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell, according to the ABS pattern and the first neighboring area The timing deviation of the first neighboring cell and the serving cell is used for CQI estimation.
  • UE user equipment
  • the method further includes: a receiving module, configured to acquire, by the acquiring module, an almost blank subframe ABS pattern of the first neighboring cell in a neighboring cell of the current serving cell, and the first Before the timing deviation between the neighboring cell and the serving cell, receiving, by the base station, an ABS pattern of all cells in the neighbor cell list of the serving cell and all cells in the neighbor cell list of the serving cell and the serving cell Timing deviation; the obtaining module is specifically configured to measure a neighboring cell of the serving cell, determine a neighboring cell with the best signal quality as the first neighboring cell, and search for a neighboring cell with the best signal quality The timing deviation of the ABS pattern and the neighboring cell with the best signal quality and the serving cell.
  • the acquiring module is specifically configured to: measure a neighboring cell of the serving cell, and determine a neighboring cell with the best signal quality as the first neighboring cell;
  • the base station sends a measurement report, where the measurement report includes the identifier information of the first neighboring cell, and receives an ABS pattern of the first neighboring cell sent by the base station, and a timing offset between the first neighboring cell and the serving cell.
  • the determining module includes: a first determining unit, configured to determine whether the signal quality of the serving cell is periodically changed within a first preset time; the second determining unit is configured to determine, if the first determining unit, the signal quality of the serving cell Determining whether the first preset time is the same as the change period of the ABS pattern of the first neighboring area; the first determining unit is configured to: if the second determining The unit determines that the first preset time is the same as the change period of the ABS pattern of the first neighboring cell, and determines that the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell.
  • the first determining unit determines the first preset time and the first neighboring area If the change period of the ABS pattern is the same, the first determining unit is specifically configured to use the first neighboring area according to the first neighboring area.
  • Determining a timing deviation of the cell determining that a first time corresponding to a weak subframe in the ABS pattern of the first neighboring cell exists in a period of change of a signal quality of the serving cell, and exists in the first neighboring cell a second time corresponding to the strong subframe in the ABS pattern; determining that the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell; wherein, the signal quality change period of the serving cell is The first preset time, the first time is an appearance time of the first signal quality, the second time is an appearance time of the second signal quality, and the first signal quality is a signal quality in the serving cell The average of the signal quality of the serving cell that is greater than the first preset value in the change period, and the second signal quality is a signal of the serving cell that is smaller than the second preset value in the change period of the signal quality of the serving cell An average value of the mass, the first preset value being greater than the second preset value.
  • the UE further includes: a third determining unit, configured to determine whether a difference between the first signal quality and the second signal quality is greater than a third preset value; the first determining The unit is specifically configured to: if the third determining unit determines that the difference between the first signal quality and the second signal quality is greater than a third preset value, determining a signal quality change of the serving cell and the first neighbor The area's ABS pattern matches.
  • the processing module includes: an acquiring unit, configured to acquire a SINR value corresponding to a current subframe; a determining unit, configured to determine, according to a current subframe and a timing offset of the first neighboring cell and the serving cell, that the current subframe corresponds to a strong subframe or a weak subframe in the ABS pattern of the first neighboring cell; a processing unit, configured to: if the current subframe corresponds to a strong subframe in the ABS pattern of the first neighboring cell, the UE compares the SINR value corresponding to the current subframe according to the ABS pattern of the first neighboring cell The SINR value of the consecutive first N strong subframes of the current subframe is filtered to obtain a filtered SINR value, where N is a positive integer
  • a channel quality indication estimation method and apparatus acquires a current service by using a UE The ABS pattern of the first neighboring cell in the neighboring cell of the cell and the timing deviation of the first neighboring cell and the serving cell.
  • the first neighboring cell is the neighboring cell with the best signal quality in the neighboring cell of the serving cell, and the ABS pattern is used to indicate strong The distribution position of the subframe and the weak subframe in the time domain, when the UE determines that the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell, according to the ABS pattern of the first neighboring cell and the first neighboring cell and the serving cell
  • the timing offset is subjected to CQI estimation, and the SINR value can be obtained according to the strong subframe and the weak subframe of the first neighboring cell respectively, so that the acquired SINR value and the CQI are accurate, the channel transmission efficiency is improved, or the transmission success is ensured. rate.
  • Embodiment 1 is a flowchart of Embodiment 1 of a channel quality indicator estimation method according to the present invention
  • FIG. 2 is a schematic diagram of an ABS pattern according to an embodiment of the present invention.
  • Embodiment 3 is a flowchart of Embodiment 2 of a channel quality indicator estimation method according to the present invention.
  • Embodiment 4 is a flowchart of Embodiment 3 of a channel quality indicator estimation method according to the present invention.
  • Embodiment 4 is a flowchart of Embodiment 4 of a channel quality indicator estimation method according to the present invention.
  • Embodiment 1 of a UE according to the present invention is a schematic structural diagram of Embodiment 1 of a UE according to the present invention.
  • Embodiment 7 is a schematic structural diagram of Embodiment 2 of a UE according to the present invention.
  • FIG. 8 is a schematic structural diagram of Embodiment 3 of a UE according to the present invention. detailed description
  • FIG. 1 is a flowchart of Embodiment 1 of a channel quality indicator estimation according to the present invention.
  • the method in this embodiment may include: Step 101: The UE acquires an ABS pattern of the first neighboring cell in the neighboring cell of the current serving cell, and a timing offset between the first neighboring cell and the serving cell, where the first neighboring cell is the cell with the best signal quality in the neighboring cell of the serving cell.
  • the ABS pattern is used to indicate the distribution of strong subframes and weak subframes in the time domain.
  • the neighboring cell list of each cell corresponding to the base station is recorded in the base station.
  • the UE may obtain the neighbor cell list of the serving cell from the base station, where the neighbor cell list of the serving cell is in the neighbor cell list.
  • the information about all the cells adjacent to the serving cell is recorded, so that the UE can determine which neighboring cells of the current serving cell, and then the UE can obtain the ABS pattern of the first neighboring cell in the neighboring cell of the current serving cell and the first neighboring cell.
  • FIG. 2 is a schematic diagram of an ABS pattern according to an embodiment of the present invention.
  • an ABS pattern is used to indicate a location of a strong subframe and a weak subframe in a time domain, for example, an ABS pattern of a first neighboring area. It is used to indicate that the radio frame is divided into a strong subframe and a weak subframe, and which subframes are strong subframes and which subframes are weak subframes in the time domain.
  • FIG. 2 is only used to illustrate the ABS pattern, and the embodiment of the present invention is not limited thereto.
  • the serving cell and the first neighboring cell are different in time, there is a time deviation between the serving cell and the first neighboring cell, so according to the timing deviation of the serving cell and the first neighboring cell, the current subframe of the serving cell and the first A subframe of a neighboring cell corresponds to a subframe in which the current subframe of the serving cell is the same as the subframe of the corresponding first neighboring cell, where the timing deviation between the first neighboring cell and the serving cell is the first neighboring cell and The deviation of the signal transmission time when the serving cell separately transmits data to the UE.
  • the UE may not acquire the timing offset, which is not limited in this embodiment of the present invention.
  • the serving cell may be a cell corresponding to the macro base station or a cell corresponding to the low power node
  • the first neighboring cell may be a cell corresponding to the macro base station or a cell corresponding to the low power node, which is in the embodiment of the present invention. This is not a limitation.
  • Step 102 The UE determines whether the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell. If the UE determines that the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell, the UE performs Step 103: If the UE determines that the signal quality change of the serving cell does not match the ABS pattern of the first neighboring cell, step 104 is performed.
  • the UE may measure the signal quality of the serving cell and obtain a change of the signal quality. For example, the UE may obtain a change of the signal quality within a preset time, that is, the signal quality is within a preset time. The signal quality of the sub-frames is good, and the signal quality is poor in the sub-frames in the preset time. For example, the size of the CPICH Ec/No of the serving cell may be used to indicate the signal quality of the serving cell. No restrictions. After the UE obtains the ABS pattern of the first neighboring cell, the UE may determine whether the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell, for example, whether the signal quality of the serving cell is on the subframe and whether the ABS pattern is matched.
  • the UE determines whether the distribution positions of the medium strong subframe and the weak subframe match. If the UE determines that the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell, the UE performs step 103; if the UE determines that the signal quality change of the serving cell does not match the ABS pattern of the first neighboring cell, the UE Execute step 104.
  • Step 103 The UE performs CQI estimation according to the ABS pattern of the first neighboring cell and the timing deviation of the first neighboring cell from the serving cell.
  • the UE may use the ABS pattern of the first neighboring cell and the timing offset value of the first neighboring cell and the serving cell to the CQI.
  • the UE may perform the same as the first neighboring cell according to the timing deviation of the first neighboring cell and the serving cell, that is, obtain the subframe of the serving cell according to the timing deviation of the first neighboring cell and the serving cell.
  • Determining a serving cell corresponding to each strong subframe in the first neighboring cell if the subframe of the first neighboring cell corresponding to the current subframe of the serving cell is a strong subframe, The subframe is then obtained, and the estimated SINR value is obtained when the subframe of the determined serving cell is obtained, and the SINR value is filtered to obtain a filtered SINR value, and the CQI value is obtained according to the filtered SINR value, and the UE may check the SINR value.
  • the CQI is obtained from the correspondence table with the CQI.
  • the embodiment of the present invention can obtain the ABS pattern of the first neighboring cell and the timing offset of the first neighboring cell and the serving cell, so that the UE can separately set the SINR values of the serving cell corresponding to the strong subframe of the first neighboring cell and the weak subframe.
  • the calculation is performed to estimate the CQI separately.
  • Step 104 End the process.
  • the UE determines that the signal quality change of the serving cell does not match the ABS pattern of the first neighboring cell, the UE cannot use the ABS pattern of the first neighboring cell to perform CQI estimation, and the UE ends the process.
  • a channel quality indicator estimation method provided by an embodiment of the present invention, where a current serving cell is acquired by a UE
  • the ABS pattern of the first neighboring cell in the neighboring cell and the timing deviation of the first neighboring cell from the serving cell, the first neighboring cell is the neighboring cell with the best signal quality in the neighboring cell of the serving cell, and the ABS pattern is used to indicate the strong subframe.
  • the distribution position of the weak subframe in the time domain when the UE determines that the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell, according to the ABS pattern of the first neighboring cell and the timing of the first neighboring cell and the serving cell.
  • the CQI estimation is performed to obtain the SINR value according to the strong subframe and the weak subframe of the first neighboring cell, so that the acquired SINR value and the CQI are accurate, so that the base station can match the downlink channel to schedule data, thereby improving the data.
  • the channel transmission efficiency or the success rate of the transmission is guaranteed.
  • FIG. 3 is a flowchart of Embodiment 2 of a channel quality indicator estimation method according to the present invention. As shown in FIG. 3, the method in this embodiment may include:
  • Step 201 The UE receives a timing offset of an ABS pattern of all cells in the neighbor cell list of the serving cell and a cell and a serving cell in the neighbor cell list of the serving cell.
  • the neighboring cell list of each cell corresponding to the base station is configured in the base station, and the ABS pattern of each neighboring cell is also configured.
  • the UE may obtain a neighboring cell list of the serving cell from the base station, where the neighboring cell list of the serving cell records information of all cells adjacent to the serving cell, so that the UE may determine the current service.
  • the neighboring cell has a neighboring cell
  • the base station also sends an ABS pattern of all cells in the neighboring cell list of the serving cell to the UE, and the base station also sends the timing deviation of the cell and the serving cell to the UE, and correspondingly, the UE can receive The timing deviation of the ABS pattern of all cells in the neighbor cell list of the serving cell and the cell and the serving cell in the neighbor cell list of the serving cell sent by the base station.
  • the step 201 may be performed only once, and the step 201 is not performed every time the ABS pattern of the first neighboring cell and the timing offset between the serving cell and the serving cell are determined.
  • Step 202 The UE measures the neighboring cell of the serving cell, determines the neighboring cell with the best signal quality as the first neighboring cell, and searches for the ABS pattern corresponding to the neighboring cell with the best signal quality and the neighboring cell with the best signal quality. Timing deviation from the serving cell.
  • the UE may perform measurement on all cells in the neighboring cell list of the serving cell according to the neighboring cell list of the serving cell, obtain measurement results of each neighboring cell, and obtain signal quality of each neighboring cell according to the measurement result, for example,
  • the signal quality of the neighboring cell may be represented by measuring the CPICH RSCP or the CPICH Ec/No or the path loss of each neighboring cell.
  • the embodiment of the present invention is not limited herein.
  • the UE can determine which neighboring cell has the best signal quality, so that the UE can have the most signal quality.
  • the good neighboring cell is determined as the first neighboring cell.
  • the UE may obtain the ABS pattern of all the cells in the neighboring cell list and the timing deviation of each neighboring cell from the serving cell from the base station, so the UE may use the identifier of the first neighboring cell.
  • the information determines the ABS pattern of the first neighboring cell and the timing deviation of the first neighboring cell from the serving cell.
  • Step 203 The UE determines whether the signal quality of the serving cell changes periodically during the first preset time; if the UE determines that the signal quality of the serving cell changes periodically within the first preset time, step 204 is performed; If the UE determines that the signal quality of the serving cell does not change periodically within the first preset time, step 213 is performed.
  • the UE may measure the signal quality of the serving cell and obtain a change of the signal quality. For example, the UE may obtain a change of the signal quality within a preset time, that is, the signal quality is within a preset time. The signal quality of the sub-frames is good, and the signal quality is poor in the sub-frames in the preset time. For example, the size of the CPICH Ec/No of the serving cell may be used to indicate the signal quality of the serving cell. No restrictions. After the UE obtains the change of the signal quality of the serving cell, it is determined whether the signal quality of the serving cell changes periodically within a first preset time, that is, the signal quality change of the serving cell is determined within a first preset time period.
  • next first preset time is the same, and whether the next first preset time is the same, and so on; if yes, the UE determines that the signal quality of the serving cell changes periodically during the first preset time, That is, the signal quality change of the UE in the first preset time is the same, so that the UE can determine that the first preset time is the signal quality change period of the serving cell, and then perform step 204; if not, the UE determines the service.
  • the signal quality of the cell does not change periodically during the first preset time. If the signal quality change of the serving cell does not match the ABS pattern of the first neighboring cell, step 213 is performed.
  • Step 204 The UE determines whether the first preset time is the same as the change period of the ABS pattern of the first neighboring cell. If the UE determines that the first preset time is the same as the change period of the ABS pattern of the first neighboring cell, executing the step 205. If the UE determines that the first preset time is different from the change period of the ABS pattern of the first neighboring cell, step 213 is performed.
  • the UE determines that the signal quality of the serving cell changes periodically during the first preset time, and determines that the first preset time is the change period of the signal quality of the serving cell, and the UE may determine the first preset.
  • the time is the same as the change period of the ABS pattern of the first neighboring area, wherein the change period of the ABS pattern is: if the distribution of the strong subframe and the weak subframe in the time domain is the same in the preset time ABS pattern, That is, the distribution of the strong sub-frame and the weak sub-frame in the ABS pattern is the same in the time domain in each preset time, and the preset time is determined as the change period of the ABS pattern.
  • Step 205 If the UE determines that the first preset time is different from the change period of the ABS pattern of the first neighboring cell, if the signal quality change of the serving cell does not match the ABS pattern of the first neighboring cell, step 213 is performed.
  • step 205 may be performed to determine that the first preset time is the same as the change period of the ABS pattern of the first neighboring area.
  • Step 205 The UE determines, according to a timing offset value of the first neighboring cell and the serving cell, that a first time corresponding to a weak subframe in the ABS pattern of the first neighboring cell exists in a change period of the signal quality of the serving cell, and There is a second time corresponding to the strong subframe in the ABS pattern of the first neighboring cell.
  • the change period of the signal quality of the serving cell is a first preset time, where the first time is the appearance time of the first signal quality, and the second time is the appearance time of the second signal quality, where the first signal quality is in the serving cell
  • An average value of signal quality of the serving cell that is greater than the first preset value in the period of change of the signal quality, where the second signal quality is a signal quality of the serving cell that is smaller than the second preset value in a period of change of the signal quality of the serving cell
  • the average value, the first preset value is greater than the second preset value.
  • the UE after the UE determines that the first preset time is the same as the change period of the ABS pattern of the first neighboring cell, the UE also needs to determine whether the time when the quality of the serving cell signal is good in the first preset time is related to the ABS pattern.
  • the medium weak subframe corresponds to, and whether the time when the signal quality difference of the serving cell in the first preset time occurs is corresponding to the strong subframe in the ABS pattern.
  • the UE uses the signal quality of the serving cell that is greater than the first preset value in the change period of the signal quality of the serving cell to perform calculation, and obtains an average value of the signal quality, and the average value may be referred to as a first signal.
  • Quality the first signal quality is used to indicate that the signal quality is good; the UE uses the signal quality of the serving cell that is smaller than the second preset value in the change period of the signal quality of the serving cell for calculating, and obtains an average of the quality of the signals.
  • the average value may be referred to as a second signal quality, the second signal quality is used to indicate that the signal quality is poor; and the first preset value is greater than the second preset value, and then the UE is based on the signal within the change period of the signal quality of the serving cell
  • the change of the quality may obtain the time when the first signal quality occurs within the change period of the signal quality of the serving cell, and the time may be referred to as the first
  • the time when the second signal quality occurs in the change period of the signal quality of the serving cell may also be acquired, and the time may be referred to as the second time; that is, the first time is that the signal quality of the serving cell is good.
  • Time, the second time is the time when the signal quality of the serving cell is poor.
  • the first preset time and the second preset time are determined according to an actual application scenario, and the embodiment of the present invention is not limited herein.
  • the UE compares the time of the serving cell with the first neighboring cell according to the timing deviation of the first neighboring cell and the serving cell.
  • the UE determines whether the first time corresponds to the weak subframe of the first neighboring cell, and if yes, the UE may determine that there is a weak subframe corresponding to the ABS pattern of the first neighboring cell in the change period of the signal quality of the serving cell.
  • the first time if not, may be considered to indicate that the signal quality change of the serving cell does not match the ABS pattern of the first neighboring cell, and the UE ends the operation.
  • the UE determines whether the second time corresponds to the strong subframe of the first neighboring cell, and if yes, the UE may determine that there is a strong subframe corresponding to the ABS pattern of the first neighboring cell in the change period of the signal quality of the serving cell.
  • the second time if no, may be considered to indicate that the signal quality change of the serving cell does not match the ABS pattern of the first neighboring cell, and the UE ends the operation.
  • the UE may determine that the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell. Further, the UE may perform step 206 before determining that the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell.
  • Step 206 The UE determines whether a difference between the first signal quality and the second signal quality is greater than a third preset value. If the UE determines that the difference between the first signal quality and the second signal quality is greater than a third preset value, performing a step 207. If the UE determines that the difference between the first signal quality and the second signal quality is not greater than a third preset value, the UE performs step 213.
  • the UE After the UE determines the first signal quality and the second signal quality, and the first signal quality is used to indicate that the signal quality of the serving cell is good, and the second signal quality is used to indicate that the signal quality of the serving cell is poor, the UE And determining whether the difference between the first signal quality and the second signal quality is greater than a third preset value; if the UE determines that the difference between the first signal quality and the second signal quality is greater than the third preset value, performing step 207; The UE determines that the difference between the first signal quality and the second signal quality is not greater than the third preset value, indicating that the signal quality change of the serving cell does not match the ABS pattern of the first neighboring cell, and the UE performs step 213.
  • the third preset value may be determined according to an actual practical scenario, and the embodiment of the present invention is not limited herein. It should be noted that the step 205 may be performed simultaneously with the step 206, or may be performed after the step 206. The embodiment of the present invention is not limited herein.
  • Step 207 The UE determines that the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell.
  • the UE may determine the signal quality change of the serving cell and the first neighboring cell.
  • the ABS pattern matches, and the UE can estimate the CQI according to the ABS pattern.
  • Step 208 The UE acquires a SINR value corresponding to the current subframe.
  • the UE obtains the SINR value corresponding to the current subframe of the serving cell. It should be noted that the step 207 may be performed simultaneously with the step 208, or may be performed after the step 208, where the embodiment of the present invention does not Make restrictions.
  • Step 209 The UE determines, according to the current subframe and the timing offset of the first neighboring cell and the serving cell, that the current subframe corresponds to a strong subframe or a weak subframe in the ABS pattern of the first neighboring cell; if the UE determines that the current subframe corresponds to the current subframe If the strong subframe is in the ABS pattern of the first neighboring cell, step 210 is performed. If the UE determines that the current subframe corresponds to the weak subframe in the ABS pattern of the first neighboring cell, step 211 is performed.
  • the UE compares the time between the serving cell and the first neighboring cell according to the timing deviation of the first neighboring cell and the serving cell, and then determines, according to the current subframe, the first subframe corresponding to the current subframe of the serving cell.
  • the sub-frame of the neighboring cell determines whether the subframe of the first neighboring cell corresponding to the current subframe of the serving cell is a strong subframe or a weak subframe in the ABS pattern of the first neighboring cell according to the ABS pattern of the first neighboring cell.
  • step 210 if the subframe of the first neighboring cell corresponding to the current subframe of the serving cell is a strong subframe in the ABS pattern of the first neighboring cell, the current subframe corresponds to the strong subframe in the ABS pattern of the first neighboring cell, Executing step 210: if the subframe of the first neighboring cell corresponding to the current subframe of the serving cell is a weak subframe in the ABS pattern of the first neighboring cell, indicating that the current subframe corresponds to the weakness of the ABS of the first neighboring cell Sub-frame, step 211 is performed.
  • Step 210 The UE performs filtering processing on the SINR value corresponding to the current subframe and the SINR value of consecutive consecutive N strong subframes in the current subframe according to the ABS pattern of the first neighboring cell, to obtain a filtered SINR value, where N is greater than A positive integer equal to 0.
  • the UE determines that the current subframe corresponds to the strong subframe in the ABS pattern of the first neighboring cell, and the UE may determine, according to the ABS pattern of the first neighboring cell, the current sub-frame corresponding to the ABS pattern of the first neighboring region. There are N consecutive strong subframes in front of the frame, and N is a positive integer greater than or equal to 0. If the current subframe corresponds to the weakest subframe of the strong subframe of the ABS pattern of the first neighboring area, it may be determined that the current subframe corresponds to the first subframe of the first neighboring area, and the front of the strong subframe has 0 consecutive Strong subframe.
  • the current subframe corresponds to The previous subframe of the strong subframe in the ABS pattern of the first neighboring area is a strong subframe, and the current subframe corresponds to the weakest subframe of the previous subframe of the strongest subframe in the ABS pattern of the first neighboring area. Then, it can be determined that the current subframe corresponds to one consecutive strong subframe in front of the strong subframe in the ABS pattern corresponding to the first neighboring cell. If the current subframe corresponds to the strongest subframe of the strong subframe in the ABS pattern of the first neighboring cell, the current subframe corresponds to the previous subframe of the previous subframe of the strong subframe in the ABS pattern of the first neighboring region.
  • the frame is a strong subframe, it can be determined that the current subframe has at least two consecutive strong subframes in front of the strong subframe in the ABS pattern of the first neighboring cell, and so on, which is not described in detail in this embodiment of the present invention. .
  • the UE After the UE determines that the current subframe has consecutive N strong subframes in the ABS pattern of the first neighboring cell, the UE compares the SINR value of the current first subframe in the first N subframes of the serving cell with the SINR of the current subframe. The value is filtered to obtain a filtered SINR value, for example, smoothing processing can be performed.
  • Step 211 The UE filters the SINR value corresponding to the current subframe and the SINR value of the consecutive first N weak subframes of the current subframe according to the ABS pattern of the first neighboring cell to obtain a filtered SINR value.
  • the UE determines that the current subframe corresponds to the weak subframe in the ABS pattern of the first neighboring cell, and the UE may determine, according to the ABS pattern of the first neighboring cell, the weakest subframe in the ABS pattern of the current subframe corresponding to the first neighboring cell.
  • the front of the frame has N consecutive weak subframes, and N is a positive integer greater than or equal to zero. If the current subframe corresponds to the strongest subframe of the weak subframe in the ABS pattern of the first neighboring cell, it may be determined that the current subframe corresponds to 0 consecutive in the front of the weak subframe in the ABS pattern of the first neighboring region. Weak sub-frame.
  • the current subframe corresponds to the previous subframe of the previous subframe of the strong subframe of the ABS pattern of the first neighboring cell. If the frame is a strong subframe, it may be determined that the current subframe corresponds to one consecutive weak subframe in front of the weak subframe in the ABS pattern corresponding to the first neighboring cell. If the current subframe corresponds to the weakest subframe of the weak subframe of the ABS pattern of the first neighboring cell, the current subframe corresponds to the previous subframe of the previous subframe of the weak subframe of the ABS pattern of the first neighboring cell.
  • the frame is a weak subframe, it may be determined that the current subframe corresponds to at least two consecutive weak subframes in front of the weak subframe in the ABS pattern of the first neighboring cell, and so on, which is not described in detail in this embodiment of the present invention.
  • the UE After the UE determines that the current subframe has consecutive first N weak subframes in the ABS pattern of the first neighboring cell,
  • the UE performs filtering processing on the SINR value of the current first subframe in the current N subframes of the serving cell and the SINR value of the current subframe to obtain a filtered SINR value, for example, smoothing processing may be performed.
  • Step 212 The UE determines a CQI according to the filtered SINR value.
  • the UE may determine the CQI according to the filtered SINR value. For example, the UE may check the SINR value and the CQI. Correspondence table to get CQI.
  • Step 213 the process ends.
  • the UE determines that the signal quality of the serving cell does not change periodically within the first preset time, it indicates that the signal quality change of the serving cell does not match the ABS pattern of the first neighboring cell, and the UE ends. Process. Or, if the UE determines that the first preset time is different from the change period of the ABS pattern of the first neighboring cell, it indicates that the signal quality change of the serving cell does not match the ABS pattern of the first neighboring cell, and the UE ends the process. Or, if the UE determines that the difference between the first signal quality and the second signal quality is not greater than the third preset value, indicating that the signal quality change of the serving cell does not match the ABS pattern of the first neighboring cell, the UE ends the process.
  • the UE receives the ABS pattern of all cells in the neighbor cell list of the serving cell and the timing deviation of all cells in the neighbor cell list of the serving cell and the serving cell by using the UE, Obtaining, from the ABS pattern of the first neighboring cell and the timing deviation of the first neighboring cell and the serving cell, and determining that the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell; when the UE determines that the current subframe corresponds to the first neighboring cell If the strong subframe is in the ABS pattern of the area, the SINR value corresponding to the current subframe and the SINR value of the consecutive first N strong subframes of the current subframe are filtered according to the ABS pattern of the first neighboring area, and the filtered SINR is obtained.
  • the UE determines that the current subframe corresponds to the weak subframe in the ABS pattern of the first neighboring cell, the SINR value corresponding to the current subframe and the consecutive first N weakest subframes of the current subframe according to the ABS pattern of the first neighboring cell
  • the SINR value of the frame is filtered to obtain the filtered SINR value.
  • the UE determines the CQI according to the filtered SINR value.
  • the SINR value can be obtained according to the strong subframe and the weak subframe of the first neighboring cell, so that the acquired SINR value and the CQI are accurate, so that the base station can match the downlink channel to schedule data, and improve channel transmission efficiency or guarantee. The success rate of transmission.
  • Embodiment 3 is a flowchart of Embodiment 3 of a channel quality indicator estimation method according to the present invention. As shown in FIG. 4, the difference between this embodiment and the embodiment shown in FIG. 2 is that the UE acquires the ABS pattern of the first neighboring area and the first neighboring area.
  • the method of the embodiment may include:
  • Step 301 The UE measures the neighboring cell of the serving cell, and determines the neighboring cell with the best signal quality as the first neighboring cell.
  • the neighboring cell list of each cell corresponding to the base station is configured in the base station, and after the UE accesses the serving cell, the UE may obtain the neighbor cell list of the serving cell from the base station, where the neighbor cell list of the serving cell is in the neighbor cell list. Recording information of all cells adjacent to the serving cell, so that the UE can determine
  • the neighboring cell of the current serving cell may be measured by the UE, and the measurement result of each neighboring cell may be obtained, and the signal quality of each neighboring cell may be obtained according to the measurement result, for example:
  • the CPICH RSCP or the CPICH Ec/No or the path loss is used to indicate the signal quality of the neighboring cell, which is not limited herein.
  • the UE can determine which neighboring cell has the best signal quality, so that the UE can determine the neighboring cell with the best signal quality as the first neighboring cell.
  • Step 302 The UE sends a measurement report to the base station, where the measurement report includes identifier information of the first neighboring cell.
  • Step 303 The UE receives an ABS pattern of the first neighboring cell sent by the base station, and a timing offset between the first neighboring cell and the serving cell.
  • the UE after determining the first neighboring cell with the best signal quality, the UE sends a measurement report to the base station, where the measurement report includes the identifier information of the first neighboring cell, so that the base station determines the first according to the measurement report of the UE.
  • a neighboring cell is the neighboring cell with the best signal quality of the serving cell accessed by the UE.
  • the ABS pattern of each neighboring cell is configured in the base station, and the base station can determine the identifier information of the first neighboring cell and the timing deviation between the first neighboring cell and the serving cell according to the identifier information of the first neighboring cell, and then the UE can receive the The ABS pattern of the first neighboring cell and the timing deviation of the first neighboring cell from the serving cell.
  • Step 304 The UE determines whether the signal quality of the serving cell changes periodically during the first preset time; if the UE determines that the signal quality of the serving cell changes periodically within the first preset time, step 305 is performed; If the UE determines that the signal quality of the serving cell does not change periodically within the first preset time, step 314 is performed.
  • Step 305 The UE determines whether the first preset time is the same as the change period of the ABS pattern of the first neighboring cell. If the UE determines that the first preset time is the same as the change period of the ABS pattern of the first neighboring cell, executing the step 306. If the UE determines that the first preset time is different from the change period of the ABS pattern of the first neighboring cell, step 314 is performed.
  • Step 306 The UE determines, according to a timing offset value of the first neighboring cell and the serving cell, that a first time corresponding to a weak subframe in the ABS pattern of the first neighboring cell exists in a change period of the signal quality of the serving cell, and There is a second time corresponding to the strong subframe in the ABS pattern of the first neighboring cell.
  • the change period of the signal quality of the serving cell is a first preset time, where the first time is the appearance time of the first signal quality, and the second time is the appearance time of the second signal quality, where the first signal quality is in the serving cell
  • An average value of signal quality of the serving cell that is greater than the first preset value in the period of change of the signal quality, where the second signal quality is a signal quality of the serving cell that is smaller than the second preset value in a period of change of the signal quality of the serving cell
  • the average value, the first preset value is greater than the second preset value.
  • Step 307 The UE determines whether a difference between the first signal quality and the second signal quality is greater than a third preset value.
  • step 308 determines that the difference between the first signal quality and the second signal quality is greater than a third preset value. If the UE determines that the difference between the first signal quality and the second signal quality is not greater than a third preset value, the UE performs step 314.
  • Step 308 The UE determines that the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell.
  • Step 310 The UE determines, according to the current subframe and the timing offset of the first neighboring cell and the serving cell, that the current subframe corresponds to a strong subframe or a weak subframe in the ABS pattern of the first neighboring cell; if the UE determines that the current subframe corresponds to the current subframe If the strong subframe is in the ABS pattern of the first neighboring cell, step 311 is performed; if the UE determines that the current subframe corresponds to the weak subframe in the ABS pattern of the first neighboring cell, step 312 is performed.
  • Step 311 The UE performs filtering processing on the SINR value corresponding to the current subframe and the SINR value of consecutive consecutive N strong subframes in the current subframe according to the ABS pattern of the first neighboring cell, to obtain a filtered SINR value, where N is greater than A positive integer equal to 0.
  • Step 312 The UE filters the SINR value corresponding to the current subframe and the SINR value of the consecutive first N weak subframes of the current subframe according to the ABS pattern of the first neighboring cell to obtain a filtered SINR value.
  • Step 313 The UE determines a CQI according to the filtered SINR value.
  • Step 314 the process ends.
  • the implementation process of steps 304 to 314 in this embodiment is similar to the implementation process of steps 203 to 213 in the second embodiment of the present invention.
  • the implementation process of steps 304 to 314 in this embodiment is similar to the implementation process of steps 203 to 213 in the second embodiment of the present invention.
  • the embodiments of the present invention are not described herein again.
  • the UE determines the first neighboring cell, and sends a measurement report to the base station, where the measurement report includes the identifier information of the first neighboring cell, and the UE receives the first neighboring cell sent by the base station.
  • the SINR value can be obtained according to the strong subframe and the weak subframe of the first neighboring cell, respectively.
  • the acquired SINR value and the CQI are accurate, so that the base station can match the downlink channel to schedule data, improve channel transmission efficiency, or ensure transmission success rate.
  • FIG. 5 is a flowchart of Embodiment 4 of a channel quality indicator estimation method according to the present invention. As shown in FIG. 5, the method in this embodiment may include:
  • Step 401 The base station determines a current serving cell that the UE accesses.
  • the UE when the UE moves to a cell, and when the UE needs to perform a service, the UE establishes a service connection with the cell, and the cell is a serving cell of the UE, and each cell has a difference with other cells. Identification information.
  • the cell interoperation processing apparatus may determine which cell the serving cell to which the UE access is specific.
  • the base station may determine the neighbor cell list of the serving cell when the base station determines the neighbor cell list of the cell corresponding to the base station, and the base station may determine the neighbor cell list of the serving cell, and further determine all neighboring cells of the serving cell. .
  • Step 402 The base station sends, to the UE, an almost blank subframe ABS pattern of the first neighboring cell in the neighboring cell of the serving cell, and a timing offset between the first neighboring cell and the serving cell, so that the UE determines the signal quality change of the serving cell and the first Whether the ABS pattern of the neighboring cell matches; if the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell, the UE performs CQI estimation according to the ABS pattern of the first neighboring cell and the timing deviation of the first neighboring cell and the serving cell.
  • the base station may send the ABS pattern and the first blank subframe of the first neighboring cell in the neighboring cell of the serving cell to the UE. a timing deviation between a neighboring cell and a serving cell, so that the UE determines whether the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell; if the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell, the UE The CQI estimation is performed according to the ABS pattern of the first neighboring cell and the timing deviation of the first neighboring cell from the serving cell.
  • the first neighboring cell is the cell with the best signal quality in the neighboring cell of the serving cell, for example, the first neighboring cell is the neighboring cell with the largest CPICH RSCP or the largest CPICH Ec/No or the smallest path loss in the neighboring cell of the serving cell.
  • the parameters for indicating the signal quality of the neighboring cell can be used for the parameter measurement of the neighboring area signal quality in the embodiment of the present invention, which is not limited herein.
  • the ABS pattern is used to indicate the location of the strong subframe and the weak subframe in the time domain. The ABS pattern can be seen in Figure 2 of the embodiment of the present invention, and details are not described herein.
  • the serving cell may be a cell corresponding to the macro base station or a cell corresponding to the low power node; the first neighboring cell may be a cell corresponding to the macro base station or a cell corresponding to the low power node, which is in the embodiment of the present invention.
  • the UE determines whether the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell; if the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell, the UE according to the ABS of the first neighboring cell
  • the CQI estimation is performed on the timing deviation of the pattern and the first neighboring cell and the serving cell.
  • the specific implementation manner in which the foregoing base station sends the ABS pattern of the first neighboring cell in the neighboring cell of the serving cell to the UE and the timing deviation of the first neighboring cell and the serving cell to the UE may be as follows:
  • the first implementation manner is: the base station sends, to the UE, the ABS pattern of all the cells in the neighbor cell list of the serving cell and the timing deviation of all the cells in the neighbor cell list of the serving cell, so that the UE is adjacent to the serving cell.
  • the measurement is performed, and the neighboring area with the best signal quality is determined as the first neighboring area, and the timing deviation of the ABS pattern corresponding to the neighboring area with the best signal quality and the neighboring area with the best signal quality and the serving cell is found.
  • the base station may send, to the UE, a timing deviation of an ABS pattern of all cells in the neighbor cell list of the serving cell and all cells in the neighbor cell list of the serving cell and the serving cell,
  • the UE may receive an ABS pattern of all cells in the neighbor cell list of the serving cell sent by the base station and a timing offset of all cells in the neighbor cell list of the serving cell and the serving cell.
  • the UE measures the neighboring cell of the serving cell, determines the neighboring cell with the best signal quality as the first neighboring cell, and searches for the ABS pattern corresponding to the neighboring cell with the best signal quality and the neighboring cell with the best signal quality.
  • the timing deviation of the cell refer to the description in step 202 of the second embodiment of the present invention, and details are not described herein again.
  • the second implementation manner is: the base station receives the measurement report sent by the UE, where the measurement report includes the identifier information of the first neighboring area, and the base station sends the ABS pattern of the first neighboring area to the UE according to the identifier information of the first neighboring area in the measurement report. The timing deviation of the first neighboring cell from the serving cell.
  • the UE may perform measurement on all the cells in the neighboring cell list of the serving cell, and determine the neighboring cell with the best signal quality as the first neighboring cell, and the UE sends a measurement report to the base station, where the measurement report includes the first The identification information of the neighboring area, the UE receives the measurement report sent by the UE, and according to the measurement report, the first neighboring area is determined to be the neighboring area with the best signal quality of the serving cell, and the ABS pattern of each neighboring area is configured in the base station, and the base station can Determining the identifier information of the first neighboring cell and the timing offset between the first neighboring cell and the serving cell according to the identifier information of the first neighboring cell, and then sending the ABS pattern of the first neighboring cell and the timing of the first neighboring cell and the serving cell to the UE Deviation, correspondingly, the UE may receive the ABS pattern of the first neighboring cell sent by the base station and the timing offset of the first neighboring cell and the serving cell.
  • the channel quality indicator estimation method determines the current serving cell accessed by the UE by using the base station, and then sends an almost blank subframe ABS pattern and the first neighboring cell of the first neighboring cell in the neighboring cell of the serving cell to the UE. a timing deviation from the serving cell, so that the UE determines whether the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell; if the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell, the UE according to the first The ABS pattern of the neighboring cell and the timing deviation of the first neighboring cell from the serving cell perform CQI estimation.
  • the SINR value can be obtained according to the strong subframe and the weak subframe of the first neighboring cell, so that the acquired SINR value and the CQI are accurate, the channel transmission efficiency is improved, or the success rate of the transmission is guaranteed.
  • FIG. 6 is a schematic structural diagram of Embodiment 1 of a UE according to the present invention.
  • the UE in this embodiment may include: an obtaining module 11, a determining module 12, and a processing module 13, where the obtaining module 11 is configured to acquire a current serving cell.
  • the ABS pattern is used to indicate the distribution position of the strong subframe and the weak subframe in the time domain;
  • the determining module 12 is configured to determine whether the signal quality change of the serving cell and the ABS pattern of the first neighboring cell are
  • the matching module is configured to: if the determining module 12 determines that the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell, according to the ABS pattern of the first neighboring cell and the first neighboring cell CQI estimation is performed with the timing offset of the serving cell.
  • the UE in this embodiment may be used to perform the technical solution executed by the UE in the foregoing method embodiment of the present invention.
  • the implementation principle and the technical effect are similar.
  • FIG. 7 is a schematic structural diagram of Embodiment 2 of a UE according to the present invention. As shown in FIG. 7, the UE in this embodiment is further implemented on the basis of the device structure shown in FIG. 6, and in a feasible implementation manner, the implementation is implemented.
  • the UE of the example may further include: a receiving module 14, where the acquiring module 14 is configured to acquire an almost blank subframe ABS pattern of the first neighboring cell in the neighboring cell of the current serving cell, and the first neighboring cell and the service.
  • the ABS pattern of all cells in the neighbor cell list of the serving cell sent by the base station and the timing deviation of all cells in the neighbor cell list of the serving cell and the serving cell are received; Specifically, the neighboring area of the serving cell is measured, and the neighboring area with the best signal quality is determined as the first neighboring area, and the ABS pattern corresponding to the neighboring area with the best signal quality and the signal are searched for. The timing deviation of the best quality neighboring cell from the serving cell.
  • the obtaining module 11 is specifically configured to be used in the neighboring cell of the serving cell. Performing measurement, determining a neighboring area with the best signal quality as the first neighboring area; transmitting a measurement report to the base station, where the measurement report includes identification information of the first neighboring cell; and receiving the The ABS pattern of a neighboring cell and the timing deviation of the first neighboring cell from the serving cell.
  • the determining module 12 may include: a first determining unit 121, a second determining unit 122, and a first determining unit 123; wherein the first determining unit 121 is configured to determine whether the signal quality of the serving cell is in the first pre- The second determining unit 122 is configured to determine the first preset time if the first determining unit 121 determines that the signal quality of the serving cell changes periodically within a first preset time.
  • the first determining unit 123 is configured to determine, when the second determining unit 122, the change period of the first preset time and the ABS pattern of the first neighboring cell Similarly, it is determined that the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell.
  • the first determining unit 123 is specifically configured to use the first neighboring cell according to the a timing deviation of the serving cell, determining that a first time corresponding to a weak subframe in the ABS pattern of the first neighboring cell exists in a period of change of a signal quality of the serving cell, and exists in the first neighboring cell a second time corresponding to the strong subframe in the ABS pattern; determining that the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell; wherein, the signal quality change period of the serving cell is The first preset time, the first time is an appearance time of the first signal quality, the second time is an appearance time of the second signal quality, and the first signal quality is a signal quality in the serving cell The average value of the signal quality of the serving cell that is greater than the first preset value in the change period, the second signal quality being less than the second preset value in the change
  • the UE in this embodiment may further include: a third determining unit 124, where The third determining unit 124 is configured to determine whether the difference between the first signal quality and the second signal quality is greater than a third preset value.
  • the first determining unit 123 is specifically configured to determine, by the third determining unit 124, the first If the difference between the signal quality and the second signal quality is greater than the third preset value, determining that the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell.
  • the processing module 13 may include: an obtaining unit 131, a fourth determining unit 132, a processing unit 133, and a second determining unit 134; wherein the obtaining unit 131 is configured to acquire a current subframe corresponding to the current subframe
  • the fourth determining unit 132 is configured to determine, according to a current subframe and a timing offset of the first neighboring cell and the serving cell, that the current subframe corresponds to a strong subframe in the ABS pattern of the first neighboring cell or a weak subframe;
  • the processing unit 133 is configured to: if the current subframe corresponds to a strong subframe in the ABS pattern of the first neighboring cell, the UE corresponding to the current subframe according to the ABS pattern of the first neighboring cell
  • the SINR value is filtered with the SINR value of the consecutive first N strong subframes of the current subframe to obtain a filtered SINR value, where N is a positive integer greater than or equal to 0; if the current subframe corresponds to The weakest sub
  • the second determining unit 134 is configured to determine the UE in the embodiment according to the filtered SINR value, which may be used to perform the foregoing method embodiment of the present invention.
  • the technical solution implemented by the UE has similar implementation principles and technical effects. Fine can see above described method in the related embodiment, not further described herein.
  • FIG. 8 is a schematic structural diagram of Embodiment 3 of a UE according to the present invention.
  • the UE in this embodiment may include: a memory 21 and a processor 22; wherein, the memory 21 is configured to store a code of a channel quality indication estimation method;
  • the device 22 is configured to execute the code stored in the memory 21, and obtain an almost blank subframe ABS pattern of the first neighboring cell in the neighboring cell of the current serving cell, and a timing offset between the first neighboring cell and the serving cell, where A neighboring cell is a cell with the best signal quality in the neighboring cell of the serving cell, and the ABS pattern is used to indicate the location of the strong subframe and the weak subframe in the time domain, and the signal quality of the serving cell is determined.
  • the change matches the ABS pattern of the first neighboring cell, and if the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell, according to the ABS pattern of the first neighboring cell and the first
  • the CQI estimation is performed on the timing deviation of a neighboring cell from the serving cell.
  • the UE in this embodiment may further include a receiver 23, where the processor 22 is further configured to acquire an almost blank subframe of the first neighboring cell in the neighboring cell of the current serving cell.
  • the control receiver 23 receives the ABS pattern of all cells in the neighbor cell list of the serving cell and the neighboring cell of the serving cell sent by the base station The timing deviation between all the cells in the list and the serving cell; the processor 22 is specifically configured to measure the neighboring cell of the serving cell, determine the neighboring cell with the best signal quality as the first neighboring cell, and search for The timing deviation of the ABS pattern corresponding to the neighboring cell with the best signal quality and the neighboring cell with the best signal quality and the serving cell.
  • the UE in this embodiment may further include: a receiver 23 and a transmitter 24, where the processor 22 is specifically configured to measure a neighboring cell of the serving cell, and the signal quality is the best.
  • the neighboring area is determined as the first neighboring area, and the control transmitter 24 sends a measurement report to the base station, where the measurement report includes the identifier information of the first neighboring area, and the control receiver 23 receives the first sent by the base station.
  • the processor 22 is specifically configured to determine whether the signal quality of the serving cell changes periodically within a first preset time; if the signal quality of the serving cell changes periodically within a first preset time Determining whether the first preset time is the same as the change period of the ABS pattern of the first neighboring cell; if the first preset time is the same as the change period of the ABS pattern of the first neighboring cell, Determining that the signal quality change of the serving cell matches the ABS pattern of the first neighboring cell.
  • the processor 22 is further configured to: determine, according to a timing offset of the first neighboring cell and the serving cell, that a change period of a signal quality of the serving cell exists in an ABS pattern of the first neighboring cell Determining a first time corresponding to the weak subframe, and a second time corresponding to the strong subframe in the ABS pattern of the first neighboring cell, determining a signal quality change of the serving cell and the first neighboring cell The ABS pattern is matched.
  • the change period of the signal quality of the serving cell is the first preset time, the first time is the appearance time of the first signal quality, and the second time is the second signal quality.
  • the first signal quality is an average value of signal qualities of the serving cell that is greater than the first preset value in a period of change of the signal quality of the serving cell, where the second signal quality is in the serving cell
  • the average value of the signal quality of the serving cell that is smaller than the second preset value in the period of the change of the signal quality, the first preset value being greater than the second preset value.
  • the processor 22 is further configured to determine whether a difference between the first signal quality and the second signal quality is greater than a third preset value; if yes, indicating that the UE determines a signal quality change of the serving cell The ABS pattern of the first neighboring area matches.
  • the processor 22 is specifically configured to obtain a SINR value corresponding to the current subframe, and determine, according to a timing deviation between the current subframe and the first neighboring cell and the serving cell, that the current subframe corresponds to the first a strong sub-frame or a weak sub-frame in the ABS pattern of the neighboring area; if the current sub-frame corresponds to the strong sub-frame in the ABS pattern of the first neighboring area, the current sub-sub-frame according to the ABS pattern of the first neighboring area
  • the SINR value corresponding to the frame is filtered with the SINR value of the consecutive first N strong subframes of the current subframe to obtain a filtered SINR value, where the N is a positive integer greater than or equal to 0; a weak subframe in the ABS pattern of the first neighboring cell, and corresponding to the current subframe according to the ABS pattern of the first neighboring cell
  • the SINR value is filtered by the SINR value of the consecutive first N weak subframes of the current subframe to obtain a filtered SINR value
  • the UE in this embodiment may be used to perform the technical solution executed by the UE in the foregoing method embodiment of the present invention.
  • the implementation principle and the technical effect are similar.
  • the aforementioned program can be stored in a computer readable storage medium.
  • the program when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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

Abstract

L'invention concerne un procédé et un dispositif pour estimer une indication de qualité de canal Le procédé comprend une étape dans laquelle un équipement utilisateur (UE) acquiert une configuration de sous-trame presque vide (ABS) d'une première cellule voisine parmi des cellules voisines d'une cellule de desserte courante, et un décalage de synchronisation entre la première cellule voisine et la cellule de desserte. La première cellule voisine est une cellule présentant la meilleure qualité de signal parmi les cellules voisines de la cellule de desserte; et la configuration ABS est utilisée pour indiquer des positions de distribution d'une sous-trame puissante et d'une sous-trame faible dans le domaine temporel. Le procédé comprend également une étape dans laquelle l'UE détermine si le changement de qualité de signal de la cellule de desserte correspond à la configuration ABS de la première cellule voisine; et si c'est le cas, l'UE effectue une estimation de la CQI en fonction de la configuration ABS de la première cellule voisine et du décalage de synchronisation entre la première cellule voisine et la cellule de desserte. Selon l'invention, la sous-trame puissante et la sous-trame faible de la première cellule voisine font que des valeurs SINR peuvent être acquises respectivement, de façon à rendre précises les valeurs SINR acquises et la CQI, ce qui permet d'améliorer le niveau de précision de programmation de l'accès par paquets en liaison descendante haut débit (HSDPA) d'une station de base, et d'améliorer l'efficacité de transmission de canal ou d'assurer le taux de réussite de la transmission.
PCT/CN2014/079715 2013-06-28 2014-06-12 Procédé et dispositif pour estimer une indication de qualité de canal WO2014206200A1 (fr)

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US20120122440A1 (en) * 2010-11-12 2012-05-17 Motorola Mobility, Inc. Positioning Reference Signal Assistance Data Signaling for Enhanced Interference Coordination in a Wireless Communication Network
CN102468905A (zh) * 2010-11-08 2012-05-23 华为技术有限公司 一种信道状态信息上报方法和设备
US20120157082A1 (en) * 2010-12-20 2012-06-21 Nokia Siemens Networks Oy Signaling UE measurement restrictions for inter-cell interference

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CN102468905A (zh) * 2010-11-08 2012-05-23 华为技术有限公司 一种信道状态信息上报方法和设备
CN101986586A (zh) * 2010-11-09 2011-03-16 中兴通讯股份有限公司 一种信道质量测量反馈方法及用户设备
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US20120157082A1 (en) * 2010-12-20 2012-06-21 Nokia Siemens Networks Oy Signaling UE measurement restrictions for inter-cell interference

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