WO2016106716A1 - Procédé, appareil et terminal pour déterminer une cellule cible de resélection - Google Patents

Procédé, appareil et terminal pour déterminer une cellule cible de resélection Download PDF

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Publication number
WO2016106716A1
WO2016106716A1 PCT/CN2014/095984 CN2014095984W WO2016106716A1 WO 2016106716 A1 WO2016106716 A1 WO 2016106716A1 CN 2014095984 W CN2014095984 W CN 2014095984W WO 2016106716 A1 WO2016106716 A1 WO 2016106716A1
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WO
WIPO (PCT)
Prior art keywords
cell
frequency
measurement result
inter
neighboring
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PCT/CN2014/095984
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English (en)
Chinese (zh)
Inventor
王娟
于映辉
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2014/095984 priority Critical patent/WO2016106716A1/fr
Priority to CN201480037242.6A priority patent/CN106171007B/zh
Publication of WO2016106716A1 publication Critical patent/WO2016106716A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/304—Reselection being triggered by specific parameters by measured or perceived connection quality data due to measured or perceived resources with higher communication quality

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a terminal for determining a reselected target cell.
  • Machine to Machine which is Machine Type Communication (MTC) refers to the transfer of information and data between machines and machines over a wireless network.
  • MTC Machine Type Communication
  • the Internet of Things is widely used in many fields, including smart meter reading systems, intelligent transportation, building control systems, home intelligent control systems, video surveillance systems or industrial monitoring.
  • M2M devices are mostly powered by batteries and are huge. Often, a monitoring network needs tens of thousands of monitoring nodes and is relatively scattered. Therefore, it is a great workload to replace the battery once. It is hoped that the system of M2M equipment can be realized. Low power consumption, long standby time, and fewer battery replacements for M2M devices, so reducing the power consumption of M2M devices is an urgent problem to be solved.
  • the terminal receives the neighbor cell list of the serving cell of the terminal sent by the network side, and then performs signal quality measurement on each neighboring cell corresponding to the neighbor cell identifier carried in the neighbor cell list. Since the terminal needs to measure all neighboring cells of the serving cell of the terminal included in the neighbor cell list, the power consumption measured by the UE for all neighboring cells is relatively large.
  • the embodiments of the present invention provide a method, a device, and a terminal for determining a reselected target cell, which are used to solve the problem that the terminal in the prior art determines that the reselected target cell consumes a large amount of power.
  • an embodiment of the present invention provides an apparatus for determining a reselected target cell, including:
  • a first determining unit configured to determine that the priority cell list maintained by the terminal is not empty
  • a measuring unit configured to determine, by the first determining unit, that the priority cell list maintained by the terminal is not When the space is empty, the signal is measured for each cell, and the measurement result corresponding to each cell is obtained, where each cell is a cell corresponding to each cell identifier carried in the priority cell list;
  • a second determining unit configured to determine that the measurement result that meets the first setting condition exists in the measurement result corresponding to each cell measured by the measuring unit
  • a selecting unit configured to select a cell corresponding to the measurement result that meets the first setting condition determined by the second determining unit, as a target cell that performs cell reselection by the terminal.
  • the measuring unit is further configured to: when the first determining unit determines that the priority cell list maintained by the terminal is empty, perform the neighboring cell The signal measurement is performed to obtain a measurement result corresponding to each neighboring cell, where each of the neighboring cells is a neighboring cell corresponding to each cell identifier carried in the neighboring cell list of the serving cell where the terminal is currently located;
  • the second determining unit is further configured to determine that the measurement result that meets the second setting condition exists in the measurement result corresponding to each neighboring cell measured by the measuring unit;
  • the selecting unit is further configured to select a determined neighboring cell corresponding to the measurement result that satisfies the second setting condition as a target cell that performs cell reselection by the terminal;
  • the device also includes:
  • a saving unit configured to save a cell identifier of the target cell selected by the selecting unit in the priority cell list.
  • the measuring unit is further configured to: when the second determining unit determines that the obtained measurement result corresponding to each cell does not exist, the first setting is not satisfied.
  • the conditional measurement result is obtained, the signal measurement is performed on each neighboring cell, and the measurement result corresponding to each neighboring cell is obtained, where each neighboring cell is respectively corresponding to each cell identifier carried in the neighboring cell list of the serving cell where the terminal is currently located.
  • the second determining unit is further configured to determine that the measurement result that meets the second setting condition exists in the measurement result corresponding to each neighboring cell measured by the measuring unit;
  • the selecting unit is further configured to select a determined neighboring cell corresponding to the measurement result that satisfies the second setting condition as a target cell that performs cell reselection by the terminal;
  • the device also includes:
  • a saving unit configured to save a cell identifier of the target cell selected by the selecting unit in the priority cell list.
  • the timing unit is further included:
  • the first determining unit is further configured to: when the priority cell list maintained by the terminal is empty, triggering the timing unit to start timing; or the second determining unit is further configured to determine the obtained measurement result corresponding to each cell. When there is no measurement result that satisfies the first setting condition, the timing unit starts timing;
  • the timing unit is configured to trigger the measurement unit to perform signal measurement on each neighboring cell and the current serving cell where the terminal is located, where each neighboring cell is the current serving cell where the terminal is located.
  • Each neighboring cell corresponding to each cell identifier carried in the neighbor cell list;
  • the selecting unit is further configured to: for each measurement, a measurement result corresponding to each neighboring cell and the current serving cell that is measured by the measuring unit each timeout of the timing unit, if the second determining unit determines the current service
  • the neighboring cell corresponding to the largest measurement result is selected as the target cell for performing cell reselection by the terminal in the measurement result corresponding to each neighboring cell.
  • the neighboring cell list includes an intra-frequency neighbor cell list and an inter-frequency
  • the measuring unit is configured to measure the cell signals of the inter-frequency neighboring cells, and obtain the measurement results corresponding to the inter-frequency neighboring cells, where the inter-frequency neighboring cells are carried in the inter-frequency neighboring cell list.
  • the second determining unit is configured to: when the measurement result corresponding to the second setting condition exists in the measurement result corresponding to each inter-frequency neighboring cell measured by the measuring unit, determine the measurement result corresponding to each neighboring cell a measurement result that satisfies the second set condition;
  • the measuring unit is configured to perform signal measurement on each co-frequency neighboring cell when the measurement result corresponding to the second setting condition does not exist in the measurement result corresponding to each measured inter-frequency neighboring cell, and obtain each co-frequency neighboring cell.
  • each of the intra-frequency neighboring cells is a respective intra-frequency neighboring cell corresponding to each cell identifier carried in the same-frequency neighboring cell list;
  • the second determining unit is configured to determine that the measurement unit measures the measurement result that meets the second setting condition in the measurement result corresponding to each intra-frequency neighboring cell.
  • the neighboring cell identifier carried in the neighboring cell list includes a co-frequency neighbor
  • the measuring unit is configured to perform signal measurement on each inter-frequency neighboring cell to obtain a measurement result corresponding to each inter-frequency neighboring cell, where each inter-frequency neighboring cell is the neighboring cell.
  • the second determining unit is configured to: when the measurement unit determines that the measurement result corresponding to the second setting condition exists in the measurement result corresponding to each inter-frequency neighboring cell, determine the measurement result corresponding to each inter-frequency neighboring cell a measurement result that satisfies the second set condition;
  • the measuring unit is configured to perform signal measurement on each intra-frequency neighboring cell when the measurement result corresponding to the second setting condition does not exist in the measurement result corresponding to each inter-frequency neighboring cell, and obtain corresponding to the same-frequency neighboring cell.
  • the respective intra-frequency neighboring cells are the same-frequency neighboring cells corresponding to the same-frequency neighboring cell identifiers carried in the neighboring cell list;
  • the second determining unit is configured to determine that the measurement unit measures the measurement result that meets the second setting condition in the measurement result corresponding to each intra-frequency neighboring cell.
  • the measuring unit when the priority cell list includes the different frequency
  • the measuring unit is configured to perform signal measurement on each of the inter-frequency cells to obtain measurement results corresponding to the inter-frequency cells, where the inter-frequency cells are each carried in the inter-frequency cell list.
  • Each inter-frequency cell corresponding to the cell identifier;
  • the second determining unit is configured to: when the measurement unit that is measured by the measurement unit that the measurement result corresponding to the first setting condition exists, the determined measurement result corresponding to each different frequency cell is satisfied.
  • the measuring unit is configured to perform signal measurement on each co-frequency cell when the measurement result corresponding to the first setting condition does not exist in the measurement result corresponding to each inter-frequency cell, and obtain the measurement result corresponding to each co-frequency cell.
  • the same-frequency cell is a same-frequency cell corresponding to each cell identifier carried in the same-frequency cell list;
  • the second determining unit is configured to determine a measurement result that meets the first setting condition among the measurement results corresponding to the respective intra-frequency cells measured by the measuring unit.
  • the measuring unit when the priority cell list carries the same frequency
  • the measuring unit is configured to perform signal measurement on each of the inter-frequency cells, and obtain measurement results corresponding to the inter-frequency cells, where the inter-frequency cells are different in the priority cell list.
  • the second determining unit is configured to: when determining, by the measuring unit, that the measurement result corresponding to the first setting condition exists in the measurement result corresponding to each inter-frequency cell, determining the obtained measurement result corresponding to each inter-frequency cell a measurement result that satisfies the first set condition;
  • the measuring unit is configured to perform signal measurement on each co-frequency cell when the measurement result corresponding to the first setting condition does not exist in the measurement result corresponding to each measured inter-frequency cell, and obtain a measurement corresponding to each co-frequency cell.
  • each of the intra-frequency cells is a co-frequency cell corresponding to each co-frequency cell identifier carried in the priority cell list;
  • the second determining unit is configured to determine a measurement result that satisfies the first setting condition among the measurement results corresponding to the respective intra-frequency cells obtained by the measuring unit.
  • the embodiment of the present invention further provides a method for determining a reselected target cell, including:
  • the determined cell corresponding to the measurement result satisfying the first setting condition is selected as the target cell for cell reselection by the terminal.
  • the method further includes:
  • each neighboring cell is each carried in the neighbor cell list of the serving cell where the terminal is currently located.
  • Each neighboring cell corresponding to the cell identifier
  • the neighboring cell corresponding to the determined measurement result that satisfies the second setting condition is selected as the target cell for performing cell reselection by the terminal, and the cell identifier of the selected target cell is saved in the priority cell list.
  • the method further includes:
  • the neighboring cell corresponding to the determined measurement result that satisfies the second setting condition is selected as the target cell for performing cell reselection by the terminal, and the cell identifier of the selected target cell is saved in the priority cell list.
  • the method further includes:
  • the preset timer is started, and the timer is super At the same time, each neighboring cell and the current serving cell where the terminal is located are separately measured, and each of the neighboring cells is a neighboring cell corresponding to each cell identifier carried in the neighboring cell list of the current serving cell where the terminal is located. ;
  • the neighboring cell corresponding to the largest measurement result is selected as the target cell for cell reselection by the terminal.
  • the neighbor cell list includes an intra-frequency neighbor cell list and an inter-frequency neighbor List of cells;
  • the inter-frequency neighboring cells are the respective inter-frequency neighboring cells corresponding to the respective cell identifiers carried in the inter-frequency neighboring cell list.
  • the measurement result corresponding to the second setting condition exists in the measurement result corresponding to each of the obtained inter-frequency neighboring cells, the measurement result that meets the second setting condition in the measurement result corresponding to each neighboring cell is determined;
  • the same-frequency neighboring cell is a corresponding intra-frequency neighboring cell corresponding to each cell identifier carried in the same-frequency neighboring cell list;
  • the neighboring cell identifier carried by the neighboring cell list includes an intra-frequency neighboring cell Identification and inter-frequency neighbor cell identity;
  • the inter-frequency neighboring cells are the inter-frequency neighboring cells corresponding to the inter-frequency neighboring cell identifiers carried in the neighboring cell list.
  • the measurement result that meets the second setting condition is obtained in the measurement result corresponding to each of the inter-frequency neighboring cells, the measurement result that meets the second setting condition in the measurement result corresponding to each of the obtained inter-frequency neighboring cells is determined;
  • the signal measurement is performed on each of the same-frequency neighboring cells, and the measurement results corresponding to the intra-frequency neighboring cells are obtained.
  • the frequency neighboring cell is each of the same-frequency neighboring cells corresponding to the same-frequency neighboring cell identifiers carried in the neighboring cell list;
  • the priority cell list includes an inter-frequency cell List and co-frequency cell list
  • the measurement result that meets the first setting condition is obtained in the measurement result corresponding to each of the inter-frequency cells, the measurement result that satisfies the first setting condition in the measurement result corresponding to each of the obtained inter-frequency cells is determined;
  • the signal measurement is performed on each co-frequency cell, and the measurement result corresponding to each co-frequency cell is obtained, where the same-frequency cell is the same
  • the measurement result that satisfies the first setting condition among the measurement results corresponding to the obtained same-frequency cells is determined.
  • the priority cell list carries the same frequency cell Identification and inter-frequency cell identification
  • the measurement result that meets the first setting condition is determined among the measurement results corresponding to the obtained different frequency cells;
  • the signal measurement is performed on each of the same-frequency cells, and the measurement results corresponding to the same-frequency cells are obtained, and the same-frequency cells are obtained.
  • an embodiment of the present invention provides a terminal, including:
  • the memory is configured to store a priority cell list maintained by the terminal
  • the processor is configured to perform signal measurement on each cell when determining that the priority cell list stored in the memory is not empty, and obtain measurement results corresponding to the respective cells, where each cell is carried in a priority cell list. a cell corresponding to each cell identifier; determining, in the measurement result corresponding to each cell, a measurement result that satisfies the first setting condition; and selecting a cell corresponding to the measurement result that meets the first setting condition as the terminal.
  • the target cell for cell reselection is configured to perform signal measurement on each cell when determining that the priority cell list stored in the memory is not empty, and obtain measurement results corresponding to the respective cells, where each cell is carried in a priority cell list.
  • the processor is further configured to:
  • the neighboring cell corresponding to the determined measurement result that satisfies the second setting condition is selected as the target cell for performing cell reselection by the terminal, and the cell identifier of the selected target cell is saved in the priority cell list.
  • the processor is further configured to:
  • the neighboring cell corresponding to the determined measurement result that satisfies the second setting condition is selected as the target cell for performing cell reselection by the terminal, and the cell identifier of the selected target cell is saved in the priority cell list.
  • the method further includes:
  • a timer configured to start timing when the processor determines that the priority cell list stored by the memory is empty or when there is no measurement result that satisfies the first setting condition in the measurement result corresponding to each determined cell, At each timeout, the processor is configured to perform signal measurement on each neighboring cell and the current serving cell where the terminal is located, where each neighboring cell is carried in a neighbor cell list of the current serving cell where the terminal is located.
  • the processor is further configured to: for each neighboring cell that is measured by the timer each timeout, and the measurement result corresponding to the current serving cell, if the measurement result of the current serving cell is determined to be smaller than the measurement of any neighboring cell As a result, the neighboring cell corresponding to the largest measurement result is selected as the target cell for cell reselection by the terminal in the measurement result corresponding to each neighboring cell.
  • the neighboring cell list includes an intra-frequency neighbor cell list and an inter-frequency
  • the processor is specifically configured to:
  • the inter-frequency neighboring cells are the respective inter-frequency neighboring cells corresponding to the respective cell identifiers carried in the inter-frequency neighboring cell list.
  • the measurement result corresponding to the second setting condition exists in the measurement result corresponding to each of the obtained inter-frequency neighboring cells, the measurement result that meets the second setting condition in the measurement result corresponding to each neighboring cell is determined;
  • each of the intra-frequency neighboring cells is a respective intra-frequency neighboring cell corresponding to each cell identifier carried in the same-frequency neighboring cell list;
  • the processor when the neighboring cell list carries the neighbor
  • the processor is specifically configured to:
  • the inter-frequency neighboring cells are the inter-frequency neighboring cells corresponding to the inter-frequency neighboring cell identifiers carried in the neighboring cell list.
  • the measurement result that meets the second setting condition is obtained in the measurement result corresponding to each of the inter-frequency neighboring cells, the measurement result that meets the second setting condition in the measurement result corresponding to each of the obtained inter-frequency neighboring cells is determined;
  • the signal measurement is performed on each of the same-frequency neighboring cells, and the measurement results corresponding to the intra-frequency neighboring cells are obtained.
  • the frequency neighboring cell is each of the same-frequency neighboring cells corresponding to the same-frequency neighboring cell identifiers carried in the neighboring cell list;
  • the processor when the memory stores a priority cell list When the inter-frequency cell list and the intra-frequency cell list are included, the processor is specifically configured to:
  • the signal measurement is performed on each co-frequency cell, and the measurement result corresponding to each co-frequency cell is obtained, where the same-frequency cell is the same
  • the measurement result that satisfies the first setting condition among the measurement results corresponding to the obtained same-frequency cells is determined.
  • the processor when the memory stores the priority cell list When carrying the same-frequency cell identifier and the inter-frequency cell identifier, the processor is specifically configured to:
  • the measurement result that meets the first setting condition is determined among the measurement results corresponding to the obtained different frequency cells;
  • the signal measurement is performed on each of the same-frequency cells, and the measurement results corresponding to the same-frequency cells are obtained, and the same-frequency cells are obtained.
  • the measurement result that satisfies the first setting condition among the measurement results corresponding to the obtained same-frequency cells is determined.
  • the present invention when determining that the priority cell list maintained by the terminal is not empty, performing signal measurement on each neighboring cell corresponding to the cell identifier carried in the priority cell list, and obtaining measurement results corresponding to each neighboring cell; Select the target cell. Priority is maintained through terminal maintenance The area list only performs signal measurement for each cell corresponding to the cell identifier carried in the priority cell list maintained by the terminal, thereby reducing the number of measurement of the neighboring cell, speeding up the determination of the speed of the reselected target cell, thereby reducing the power consumption of the terminal. .
  • FIG. 1 is a schematic diagram of an apparatus for determining a reselected target cell according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a terminal according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of a method for determining a reselected target cell according to an embodiment of the present invention
  • FIG. 4 is a flowchart of another method for determining a reselected target cell according to an embodiment of the present invention.
  • GSM Global System for Mobile Communications
  • Code Division Multiple Access Code Division Multiple Access
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access Wireless
  • FDMA Frequency Division Multiple Addressing
  • OFDMA Orthogonal Frequency-Division Multiple Access
  • SC-FDMA single carrier FDMA
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • a method, a device, and a terminal for determining a reselected target cell are provided.
  • the method, the device and the terminal are based on the same inventive concept. Since the principles of the method, the device and the terminal solve the problem are similar, the implementation of the device, the terminal and the method can be referred to each other, and the repeated description is not repeated.
  • An embodiment of the present invention provides a device for determining a reselected target cell. As shown in FIG. 1, the device includes:
  • the first determining unit 101 is configured to determine that the priority cell list maintained by the terminal is not empty.
  • the measuring unit 102 is configured to perform signal measurement on each cell when the first determining unit 101 determines that the priority cell list maintained by the terminal is not empty, and obtain measurement results corresponding to the respective cells, where each cell is a priority cell.
  • Each cell identifier carried in the list corresponds to each cell.
  • the measured signal may be a reference signal or a sequence or symbol on a Physical Broadcast Synchronization Channel (PBSCH), and the measurement result may include at least one of the following:
  • RSRP Reference Signal Receiving Power
  • RSRQ Reference Signal Receiving Quality
  • the measured signal may also be a sequence, a symbol, or the like on other signals, channels, or other channels, which is not specifically limited in the embodiment of the present invention.
  • the priority cell list may be set for both the measurement of the same-frequency cell and the measurement of the inter-frequency cell.
  • the second determining unit 103 is configured to determine that the measurement result that meets the first setting condition exists in the measurement result corresponding to each cell measured by the measuring unit 102.
  • the selecting unit 104 is configured to select a cell corresponding to the measurement result that meets the first setting condition determined by the second determining unit 103 as a target cell that performs cell reselection by the terminal.
  • the terminal when determining that the priority cell list maintained by the terminal is not empty, performing signal measurement on each neighboring cell corresponding to the cell identifier carried in the priority cell list, and obtaining each The measurement result corresponding to the neighboring cell; the target cell is selected according to the measurement result.
  • the terminal maintains the priority cell list, and performs signal measurement only for each cell corresponding to the cell identifier carried in the priority cell list maintained by the terminal, thereby reducing the number of neighbor cell measurements and speeding up the selection of the target cell, thereby reducing terminal consumption. Electricity.
  • the RSRP value and/or the RSRQ value are included in the measurement result, and the other measurement results may be specifically referred to, and are not described in the embodiment of the present invention.
  • Determining, in the measurement result corresponding to each cell that is obtained, the cell corresponding to the measurement result that meets the first setting condition may be specifically, but not limited to, the following:
  • the first setting conditions include Condition 1, Condition 2, and Condition 3.
  • the cell RSRP value is calculated according to the S criterion calculation formula, and the S rxlev is greater than the preset first power threshold, and/or the S qual is greater than the preset first quality threshold according to the SRS criterion calculation formula according to the RSRQ value of the cell. Community.
  • the signal quality level of the cell determined according to the measurement result and the R criterion is greater than the signal quality level of the serving cell
  • Condition 3 the cell with the highest signal quality level value.
  • S rxlev is calculated according to the S criterion calculation formula
  • S qual is calculated according to the SRS criterion calculation formula according to the RSRQ value of the cell
  • a cell having the highest signal quality level selected by the cell having a quality level greater than the signal quality level of the serving cell is used as the target cell.
  • the measurement result of the current serving cell of the terminal may be obtained by using a pre-measurement, or may be measured at the same time as the cell corresponding to the cell identifier in the priority cell list, which is not specifically limited in the present invention.
  • the first setting conditions include Condition 1, Condition 2, and Condition 3.
  • the RSRQ of the cell is greater than a preset second quality threshold and/or the RSRP is greater than a preset second power threshold.
  • the signal quality level of the cell determined according to the measurement result and the R criterion is greater than the signal quality level of the serving cell
  • Condition 3 the cell with the highest signal quality level value.
  • the selecting unit 104 is configured to select, as the candidate cell, each RSRQ that is greater than a preset second quality threshold and/or that the RSRP is greater than a preset second power threshold.
  • the second determining unit 103 determines the signal quality level of the candidate cell according to the measurement result and the R criterion, and determines the signal quality level of the current serving cell of the terminal, and performs the signal quality level of the obtained candidate cell and the serving cell. Sorting, the selecting unit 104 selects, as the target cell, a cell with the highest signal quality level among the cells in the candidate cell whose signal quality level is greater than the signal quality level of the serving cell.
  • the first setting conditions include Condition 1, Condition 2, and Condition 3.
  • the signal quality level of the cell determined according to the measurement result and the R criterion is greater than the signal quality level of the serving cell
  • Condition 2 the cell with the highest signal quality level value
  • Condition 3 satisfying the threshold corresponding to a certain coverage level.
  • a narrowband M2M system can include three coverage levels, Coverageclass0 represents normal coverage, and Coverageclass1 and Coverageclass2 are for coverage enhancement scenarios, which can represent extended coverage.
  • Coverageclass0 does not need to be spread and repeated, and Coverageclass1 and Coverageclass2 require 8/64 repetitions respectively. 8X and 64X).
  • the thresholds corresponding to the respective coverage levels may be delivered by the network side or specified in the protocol according to actual conditions. It is not specifically limited in the embodiment of the present invention.
  • the second determining unit 103 determines, according to the measurement result and the R criterion, a signal quality level of each cell corresponding to the cell identifier in the priority cell list, and determines a signal quality level of the current serving cell of the terminal, and the acquired candidate cell and The signal quality level of the serving cell is sorted, and the selecting unit 104 selects the threshold corresponding to the normal coverage level or the extended coverage level in the cell in which the signal quality level of the candidate cell is greater than the signal quality level of the serving cell.
  • the threshold cell is the target cell.
  • Q qualmeas in the above formula indicates the reception quality of the sequence number on the PBSCH or the reception of the symbol on the PBSCH.
  • Q rxlevmin in the above formula indicates the received power of the sequence number on the PBSCH or the received power of the symbol on the PBSCH.
  • the R criterion is calculated as:
  • R s Q meas,s +Q Hyst ;
  • R n Q meas, n – Q offset ;
  • R n represents the signal quality level of the neighboring cell
  • R s represents the signal quality level of the serving cell
  • Q meas indicates the RSRP value of the cell; where Q meas, s is for the current serving cell where the terminal is located, and Q meas, n is for the neighboring cell of the serving cell of the terminal.
  • Q Hyst Indicates the hysteresis value of the RSRP of the serving cell, which is optional.
  • Q offset represents the offset between the current serving cell and the neighboring cell where the terminal is located, which is an optional value.
  • Q qualmeas in the above formula indicates the reception quality of the sequence number on the PBSCH or the reception of the symbol on the PBSCH.
  • Q rxlevmin in the above formula indicates the received power of the sequence number on the PBSCH or the received power of the symbol on the PBSCH.
  • the measuring unit 102 is further configured to: when the first determining unit 101 determines that the priority cell list maintained by the terminal is empty, perform signal measurement on each neighboring cell, and obtain measurement results corresponding to each neighboring cell, where Each neighboring cell is a neighboring cell corresponding to each cell identifier carried in the neighbor cell list of the serving cell where the terminal is currently located;
  • the second determining unit 103 is further configured to determine that the measurement result that meets the second setting condition exists in the measurement result corresponding to each neighboring cell measured by the measuring unit 102;
  • the selecting unit 104 is further configured to select a determined neighboring cell corresponding to the measurement result that satisfies the second setting condition as a target cell that performs cell reselection by the terminal.
  • the device also includes:
  • a saving unit configured to save the cell identifier of the target cell selected by the selecting unit 104 in the priority cell list.
  • the neighbor cell list is a cell identifier of a neighboring cell that is configured by the network side in advance for the terminal and that carries the serving cell of the terminal.
  • the measuring unit 102 is further configured to perform signal measurement on each neighboring cell when the measurement result corresponding to the first setting condition does not exist in the measurement result corresponding to each cell determined by the second determining unit 103 And obtaining a measurement result corresponding to each neighboring cell, where each of the neighboring cells is a neighboring cell corresponding to each cell identifier carried in the neighboring cell list of the serving cell where the terminal is currently located;
  • the second determining unit 103 is further configured to determine that the measurement result that meets the second setting condition exists in the measurement result corresponding to each neighboring cell measured by the measuring unit 102;
  • the selecting unit 104 is further configured to select a determined neighboring cell corresponding to the measurement result that satisfies the second setting condition as a target cell that performs cell reselection by the terminal;
  • the device also includes:
  • a saving unit configured to save the cell identifier of the target cell selected by the selecting unit 104 In the priority cell list.
  • the RSRP value and/or the RSRQ value are included in the measurement result, and the other measurement results may be specifically referred to, and are not described in the embodiment of the present invention.
  • the specific cell corresponding to the measurement result that meets the first setting condition in the measurement result corresponding to each of the obtained cells may be determined by the following manner:
  • S rxlev is calculated according to the S criterion calculation formula
  • S qual is calculated according to the neighboring cell RSRQ value according to the S criterion calculation formula
  • a neighboring cell whose S rxlev is greater than a preset third power threshold and/or S qual greater than a preset third quality threshold is selected as the candidate cell.
  • the second determining unit 103 determines a signal quality level of the candidate cell according to the measurement result and the R criterion, and determines a signal quality level of the current serving cell of the terminal, and sorts the obtained signal quality levels of the candidate cell and the serving cell, and selects a unit.
  • 104 Select a neighboring cell with the highest signal quality level in the candidate cell as the target cell.
  • the measurement result of the current serving cell of the terminal may be obtained by using a pre-measurement, or the neighboring cells corresponding to the cell identifier in the neighboring cell list are simultaneously measured, and the present invention does not specifically limit the present invention.
  • the first quality threshold may be set to be greater than the third quality threshold, and the first power threshold is greater than the third power threshold.
  • the second determining unit 103 determines a signal quality level of the candidate cell according to the measurement result and the R criterion, and determines a signal quality level of the current serving cell of the terminal, and sorts the obtained signal quality levels of the candidate cell and the serving cell, and selects a unit.
  • the neighboring cell with the highest signal quality level is selected as the target cell in the neighboring cell whose signal quality level is higher than the signal quality level of the serving cell in the candidate cell.
  • the second quality threshold may be set to be greater than the fourth quality threshold, and the second power threshold is greater than the fourth power threshold.
  • the signal quality level is greater than the signal quality level of the serving cell, and the neighboring cell that has the highest signal quality level and meets the threshold corresponding to the normal coverage level or the threshold corresponding to the extended coverage level is selected as the target cell.
  • the coverage level corresponding to the determination condition included in the first setting condition may be lower than the coverage level corresponding to the determination condition included in the second setting condition. For example, when the neighboring cell satisfies the normal coverage level in the determination condition included in the first setting condition, the neighboring cell in the condition of the determination included in the second setting condition satisfies the second coverage level.
  • the device further includes a timing unit:
  • the first determining unit 101 is further configured to: when the priority cell list maintained by the terminal is empty, triggering the timing unit to start timing; or the second determining unit 103 is further configured to determine the obtained measurement corresponding to each cell. When there is no measurement result satisfying the first setting condition in the result, the timing unit starts timing;
  • the timing unit is configured to trigger the measurement unit 102 to perform signal measurement on each neighboring cell and the current serving cell where the terminal is located, where each neighboring cell is the current service where the terminal is located.
  • Each neighboring cell corresponding to each cell identifier carried in the neighboring cell list of the cell;
  • the selecting unit 104 is further configured to: for each measurement, the measurement result corresponding to each neighboring cell and the current serving cell that is measured by the measuring unit 102 each timeout of the timing unit, if the second determining unit determines the The measurement result of the current serving cell is smaller than the measurement result of any neighboring cell. In the measurement result corresponding to each neighboring cell, the neighboring cell corresponding to the largest measurement result is selected as the target cell in which the terminal performs cell reselection.
  • the target cell is the best cell in the priority cell list, but may not be the cell with the best signal among all the neighbor cells. Therefore, the timer is set to ensure that the terminal performs signal measurement on each neighboring cell corresponding to the neighboring cell identifier carried in the neighboring cell list at intervals, and determines whether the serving cell of the terminal is carried in the neighboring cell list. The cell with the highest signal quality value or signal power value in each neighboring cell. Determine whether to replace the serving cell based on the measurement result.
  • the neighbor cell list includes an intra-frequency neighbor cell list and an inter-frequency neighbor cell list.
  • the intra-frequency neighbor cell list is used to carry the same-frequency neighbor cell identifier
  • the inter-frequency neighbor cell list is used to carry the inter-frequency neighbor cell identifier.
  • the neighbor cell list includes an intra-frequency neighbor cell list and an inter-frequency neighbor cell list.
  • the measuring unit 102 is configured to measure the cell signals of the respective inter-frequency neighboring cells, and obtain measurement results corresponding to the inter-frequency neighboring cells.
  • Each of the inter-frequency neighboring cells is a respective inter-frequency neighboring cell corresponding to each cell identifier carried in the inter-frequency neighbor cell list;
  • the second determining unit 103 is configured to: when the measurement result corresponding to the second setting condition exists in the measurement result corresponding to each inter-frequency neighboring cell measured by the measuring unit 102, determine the corresponding measurement of each neighboring cell The measurement result that satisfies the second set condition in the result;
  • the measuring unit 102 is configured to perform signal measurement on each intra-frequency neighboring cell when the measurement result corresponding to the second setting condition does not exist in the measurement result corresponding to each measured inter-frequency neighboring cell, and obtain each co-frequency neighbor. a measurement result corresponding to the cell, where each of the intra-frequency neighboring cells is a respective intra-frequency neighboring cell corresponding to each cell identifier carried in the same-frequency neighboring cell list;
  • the second determining unit 103 is configured to determine that the measuring unit 102 measures each co-frequency neighbor The measurement result of the second setting condition is satisfied in the measurement result corresponding to the cell.
  • the measuring unit 102 is configured to perform signal measurement on each inter-frequency neighboring cell to obtain different a measurement result corresponding to the frequency neighboring cell, where each of the inter-frequency neighboring cells is an inter-frequency neighboring cell corresponding to each inter-frequency neighboring cell identifier carried in the neighboring cell list;
  • the second determining unit 10 is configured to: when the measurement unit 102 measures that the measurement result corresponding to the second setting condition exists in the measurement result corresponding to each inter-frequency neighboring cell, determine the corresponding inter-frequency neighboring cell corresponding to the obtained a measurement result that satisfies the second set condition in the measurement result;
  • the measuring unit 102 is configured to perform signal measurement on each intra-frequency neighboring cell when the measurement result corresponding to the second setting condition does not exist in the measurement result corresponding to each inter-frequency neighboring cell, and obtain the same-frequency neighboring cell.
  • the respective intra-frequency neighboring cells are respective intra-frequency neighboring cells corresponding to the same-frequency neighboring cell identifiers carried in the neighboring cell list;
  • the second determining unit 103 is configured to determine that the measurement unit 102 measures the measurement result that meets the second setting condition in the measurement result corresponding to each intra-frequency neighboring cell.
  • the inter-frequency neighboring cell is relatively close to the terminal, and therefore the probability of satisfying the second setting condition in the inter-frequency neighboring cell is greater. Therefore, the inter-frequency neighboring cell is preferentially measured.
  • the rate of selecting the target cell is improved, thereby shortening the time for the terminal to select the target cell, and reducing the power consumption of the terminal.
  • the measuring unit 102 is configured to perform signal measurement on each inter-frequency cell to obtain a measurement corresponding to each inter-frequency cell.
  • each of the inter-frequency cells is a respective inter-frequency cell corresponding to each cell identifier carried in the inter-frequency cell list;
  • the second determining unit 103 is configured to: when the measurement unit 102 measures that the measurement result corresponding to the first setting condition exists in the measurement result corresponding to each inter-frequency cell, determine the measurement result corresponding to each of the obtained inter-frequency cells a measurement result that satisfies the first set condition;
  • the measuring unit 102 is configured to perform signal measurement on each co-frequency cell when the measurement result corresponding to the first setting condition does not exist in the measurement result corresponding to each inter-frequency cell, and obtain a measurement corresponding to each co-frequency cell.
  • the intra-frequency cell is a same-frequency cell corresponding to each cell identifier carried in the same-frequency cell list;
  • the second determining unit 103 is configured to determine a measurement result that satisfies the first setting condition among the measurement results corresponding to the respective intra-frequency cells measured by the measuring unit 102.
  • the measuring unit 102 when the priority cell list carries the same-frequency cell identifier and the inter-frequency cell identifier, the measuring unit 102 is configured to perform signal measurement on each inter-frequency cell to obtain a measurement corresponding to each inter-frequency cell.
  • each of the inter-frequency cells is a respective inter-frequency cell corresponding to each inter-frequency cell identifier carried in the priority cell list;
  • the second determining unit 103 is configured to: when determining that the measurement unit 102 determines that the measurement result corresponding to the first setting condition exists in the measurement result corresponding to each inter-frequency cell, the determined measurement corresponding to each inter-frequency cell is determined. The measurement result that satisfies the first set condition in the result;
  • the measuring unit 102 is configured to perform signal measurement on each co-frequency cell when the measurement result corresponding to the first setting condition does not exist in the measurement result corresponding to each measured inter-frequency cell, and obtain corresponding to each intra-frequency cell.
  • each of the intra-frequency cells is a co-frequency cell corresponding to each co-frequency cell identifier carried in the priority cell list;
  • the second determining unit 103 is configured to determine a measurement result that satisfies the first setting condition among the measurement results corresponding to the respective intra-frequency cells obtained by the measuring unit 102.
  • the inter-frequency neighboring cell since the inter-frequency neighboring cell is generally closer to the terminal, the probability of satisfying the first setting condition in the inter-frequency neighboring cell is greater. Therefore, the measurement of the inter-frequency neighboring cell is preferentially performed, and the rate of selecting the target cell is improved, thereby shortening the time for the terminal to select the target cell, and reducing the power consumption of the terminal.
  • the embodiment of the present invention further provides another terminal.
  • the terminal includes a processor 201 and a memory 202.
  • the processor and the memory may be connected through a bus 203, and of course, the present invention may be otherwise In the embodiment, the bus connection will be described.
  • Processor 201 may be an integrated circuit chip with signal processing capabilities.
  • the processor 201 can also be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), or a field-programmable gate array (FPGA). ) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • the general purpose processor may be a microprocessor, a central processing unit or the processor or any conventional processor or the like.
  • the memory 202 is configured to store a program.
  • the program can include program code, the program code including computer operating instructions.
  • the memory 202 may include a random access memory (RAM), and may also include a non-volatile memory such as at least one disk storage.
  • the processor 201 executes a program stored in the memory 202 to implement the method for determining a reselection target cell shown in FIG. 2 of the present invention.
  • the processor 201 performs signal measurement on each cell when determining that the priority cell list maintained by the terminal is not empty, and obtains measurement results corresponding to the respective cells, where each cell corresponds to each cell identifier carried in the priority cell list.
  • the priority cell list maintained by the terminal is specifically stored in the memory 202.
  • the processor 201 determines that the obtained measurement result corresponding to each cell has a measurement result that satisfies the first setting condition, and selects the determined cell corresponding to the measurement result that satisfies the first setting condition as the target cell that performs cell reselection by the terminal. .
  • the processor 201 when determining that the priority cell list maintained by the terminal is empty, performs signal measurement on each neighboring cell to obtain a measurement result corresponding to each neighboring cell, where each neighboring cell is a neighbor of the serving cell where the terminal is currently located.
  • the neighboring cell serves as a target cell for cell reselection by the terminal, and saves the cell identifier of the selected target cell in the priority cell list.
  • the list of priority cells is stored in the memory 202.
  • the processor 201 does not exist in the measurement result corresponding to each cell that is determined to be obtained.
  • the measurement result of the first setting condition is met, the signal measurement is performed on each neighboring cell, and the measurement result corresponding to each neighboring cell is obtained, where each neighboring cell is a cell carried in the neighbor cell list of the serving cell where the terminal is currently located. Identifying respective neighboring cells corresponding to the respective neighboring cells; determining, in the measurement result corresponding to each neighboring cell, a measurement result that satisfies the second setting condition; and selecting a neighboring cell corresponding to the determined measurement result that satisfies the second setting condition as the terminal Performing cell reselection of the target cell, and saving the cell identity of the selected target cell in the priority cell list.
  • the terminal further includes a timer.
  • the processor 201 determines that the priority cell list maintained by the terminal is empty or when it is determined that the measurement result corresponding to the first setting condition does not exist in the measurement result corresponding to each of the obtained cells, the timer starts timing; the timer At each timeout, the processor 201 is configured to perform signal measurement on each neighboring cell and the current serving cell where the terminal is located, where each neighboring cell is carried in the neighbor cell list of the current serving cell where the terminal is located.
  • each of the neighboring cells corresponding to each of the cell identifiers; and the measurement result corresponding to each neighboring cell and the current serving cell measured by the timer each timeout, if the measurement result of the current serving cell is determined to be smaller than any neighbor
  • the neighboring cell corresponding to the largest measurement result is selected as the target cell for performing cell reselection by the terminal in the measurement result corresponding to each neighboring cell.
  • the processor 201 measures the cell signals of the inter-frequency neighboring cells, and obtains measurement results corresponding to the inter-frequency neighboring cells.
  • Each of the inter-frequency neighboring cells is a respective inter-frequency neighboring cell corresponding to each cell identifier carried in the inter-frequency neighboring cell list; and the measured result corresponding to the second setting condition exists in the obtained measurement result corresponding to each inter-frequency neighboring cell As a result, the measurement result that satisfies the second setting condition among the measurement results corresponding to each neighboring cell is determined.
  • the processor 201 When the measurement result corresponding to the second setting condition is not found in the measurement result corresponding to each inter-frequency neighboring cell, the processor 201 performs signal measurement on each intra-frequency neighboring cell to obtain a measurement result corresponding to each intra-frequency neighboring cell.
  • Each of the intra-frequency neighboring cells is a same-frequency neighboring cell corresponding to each cell identifier carried in the same-frequency neighboring cell list; and the measurement result that meets the second setting condition in the measurement result corresponding to each intra-frequency neighboring cell is determined.
  • the processor 201 performs signal measurement on each inter-frequency neighboring cell, and obtains corresponding to each inter-frequency neighboring cell.
  • each of the inter-frequency neighboring cells is an inter-frequency neighboring cell corresponding to each inter-frequency neighboring cell identifier carried in the neighboring cell list; and when the corresponding measurement result corresponding to each inter-frequency neighboring cell is satisfied, the second setting is satisfied.
  • the conditional measurement result is determined, the measurement result that satisfies the second setting condition among the measurement results corresponding to the obtained different frequency neighboring cells is determined.
  • the processor 201 When the measurement result corresponding to the second setting condition is not found in the measurement result corresponding to each inter-frequency neighboring cell, the processor 201 performs signal measurement on each intra-frequency neighboring cell to obtain a measurement result corresponding to each intra-frequency neighboring cell.
  • Each of the intra-frequency neighboring cells is a same-frequency neighboring cell corresponding to each of the same-frequency neighboring cell identifiers in the neighboring cell list; and the measurement result that meets the second setting condition in the measurement result corresponding to each of the same-frequency neighboring cells is determined. .
  • the processor 201 when the priority cell list includes an inter-frequency cell list and a co-frequency cell list, the processor 201 performs signal measurement on each inter-frequency cell to obtain a measurement result corresponding to each inter-frequency cell, Each of the inter-frequency cells is a respective inter-frequency cell corresponding to each cell identifier carried in the inter-frequency cell list; and when the measurement result corresponding to the first setting condition is obtained in the measurement result corresponding to each inter-frequency cell, the determined result is obtained. The measurement result that satisfies the first setting condition among the measurement results corresponding to the respective inter-frequency cells.
  • the processor 201 performs signal measurement on each of the same-frequency cells when the measurement result corresponding to the first setting condition does not exist in the measurement result corresponding to each of the inter-frequency cells, and obtains measurement results corresponding to the same-frequency cells, where the same frequency is obtained.
  • the cell is a same-frequency cell corresponding to each cell identifier carried in the same-frequency cell list; and the measurement result that meets the first setting condition in the measurement result corresponding to each of the obtained same-frequency cells is determined.
  • the processor 201 when the priority cell list carries the same-frequency cell identifier and the inter-frequency cell identifier, the processor 201 performs signal measurement on each of the inter-frequency cells to obtain measurement results corresponding to the respective inter-frequency cells.
  • Each of the inter-frequency cells is a different-frequency cell corresponding to each of the inter-frequency cell identifiers carried in the priority cell list, and when it is determined that the measurement result corresponding to the first setting condition exists in the measurement result corresponding to each inter-frequency cell, Determining the corresponding respective inter-frequency cells corresponding to The measurement result that satisfies the first setting condition in the measurement result.
  • the processor 201 When the measurement result corresponding to the first setting condition does not exist in the measurement result corresponding to each of the obtained inter-frequency cells, the processor 201 performs signal measurement on each of the same-frequency cells, and obtains measurement results corresponding to the same-frequency cells, where each The same-frequency cell is the same-frequency cell corresponding to each of the same-frequency cell identifiers carried in the priority cell list; and the measurement result that meets the first setting condition in the measurement result corresponding to each of the obtained same-frequency cells is determined.
  • An embodiment of the present invention provides a method for determining a reselected target cell. As shown in FIG. 3, the method is performed by a terminal, and the method includes:
  • Step 301 When it is determined that the priority cell list maintained by the terminal is not empty, perform signal measurement on each cell, and obtain measurement results corresponding to the respective cells, where each cell is respectively corresponding to each cell identifier carried in the priority cell list. Each cell.
  • the measured signal may be a reference signal or a sequence or symbol on a Physical Broadcast Synchronization Channel (PBSCH), and the measurement result may include at least one of the following:
  • RSRP Reference Signal Receiving Power
  • RSRQ Reference Signal Receiving Quality
  • the measured signal may also be a sequence, a symbol, or the like on other signals, channels, or other channels, which is not specifically limited in the embodiment of the present invention.
  • the priority cell list may be set for both the measurement of the same-frequency cell and the measurement of the inter-frequency cell.
  • Step 302 Determine, in the obtained measurement result corresponding to each cell, that the measurement result that meets the first setting condition exists.
  • Step 303 Select a cell corresponding to the determined measurement result that satisfies the first setting condition as a target cell that performs cell reselection by the terminal.
  • the terminal when determining that the priority cell list maintained by the terminal is not empty, performing signal measurement on each neighboring cell corresponding to the cell identifier carried in the priority cell list, and obtaining measurement results corresponding to each neighboring cell; Select the target cell.
  • the terminal maintains the priority cell list, and performs signal measurement only for each cell corresponding to the cell identifier carried in the priority cell list maintained by the terminal, thereby reducing the number of neighbor cell measurements and speeding up the selection of the target cell, thereby reducing terminal consumption. Electricity.
  • the RSRP value and/or the RSRQ value are included in the measurement result, and the other measurement results may be specifically referred to, and are not described in the embodiment of the present invention.
  • Determining, in the measurement result corresponding to each cell that is obtained, the cell corresponding to the measurement result that meets the first setting condition may be specifically, but not limited to, the following:
  • the first setting conditions include Condition 1, Condition 2, and Condition 3.
  • the cell RSRP value is calculated according to the S criterion calculation formula, and the S rxlev is greater than the preset first power threshold, and/or the S qual is greater than the preset first quality threshold according to the SRS criterion calculation formula according to the RSRQ value of the cell. Community.
  • the signal quality level of the cell determined according to the measurement result and the R criterion is greater than the signal quality level of the serving cell
  • Condition 3 the cell with the highest signal quality level value.
  • S rxlev is calculated according to the S criterion calculation formula
  • S qual is calculated according to the SRS criterion calculation formula according to the RSRQ value of the cell
  • the quality level is greater than the signal quality level of the serving cell
  • the cell with the highest signal quality level is selected as the target cell in the cell.
  • the measurement result of the current serving cell of the terminal may be obtained by using a pre-measurement, or may be measured at the same time as the cell corresponding to the cell identifier in the priority cell list, which is not specifically limited in the present invention.
  • the first setting conditions include Condition 1, Condition 2, and Condition 3.
  • the RSRQ of the cell is greater than a preset second quality threshold and/or the RSRP is greater than a preset second power threshold.
  • the signal quality level of the cell determined according to the measurement result and the R criterion is greater than the signal quality level of the serving cell
  • Condition 3 the cell with the highest signal quality level value.
  • each cell that has an RSRQ greater than a preset second quality threshold and/or an RSRP greater than a preset second power threshold is selected as the candidate cell;
  • the cell having the highest signal quality level is selected as the target cell in the cell whose level is greater than the signal quality level of the serving cell.
  • the first setting conditions include Condition 1, Condition 2, and Condition 3.
  • the signal quality level of the cell determined according to the measurement result and the R criterion is greater than the signal quality level of the serving cell
  • Condition 2 the cell with the highest signal quality level value
  • Condition 3 satisfying the threshold corresponding to a certain coverage level.
  • a narrowband M2M system can include three coverage levels, Coverageclass0 represents normal coverage, and Coverageclass1 and Coverageclass2 are for coverage enhancement scenarios, which can represent extended coverage.
  • Coverageclass0 does not require spreading and repetition
  • Coverageclass1 and Coverageclass2 require 8/64 repetitions (called 8X and 64X).
  • the thresholds corresponding to the respective coverage levels may be delivered by the network side or specified in the protocol according to actual conditions. It is not specifically limited in the embodiment of the present invention.
  • the signal quality level of each cell corresponding to the cell identifier in the priority cell list is determined according to the measurement result and the R criterion, and the signal quality level of the current serving cell of the terminal is determined, and the signal quality of the obtained candidate cell and the serving cell is obtained.
  • the grading is performed, and in the cell in the candidate cell where the signal quality level is greater than the signal quality level of the serving cell, the cell having the highest signal quality level and satisfying the threshold corresponding to the normal coverage level or the threshold corresponding to the extended coverage level is selected as the target cell.
  • each parameter value in the above formula is shown in Table 1 below.
  • Q qualmeas in the above formula indicates the reception quality of the sequence number on the PBSCH or the reception of the symbol on the PBSCH.
  • Q rxlevmin in the above formula indicates the received power of the sequence number on the PBSCH or the received power of the symbol on the PBSCH.
  • the R criterion is calculated as:
  • R s Q meas,s +Q Hyst ;
  • R n Q meas, n – Q offset ;
  • R n represents the signal quality level of the neighboring cell
  • R s represents the signal quality level of the serving cell
  • Q meas indicates the RSRP value of the cell; where Q meas, s is for the current serving cell where the terminal is located, and Q meas, n is for the neighboring cell of the serving cell of the terminal.
  • Q Hyst Indicates the hysteresis value of the RSRP of the serving cell, which is optional.
  • Q offset represents the offset between the current serving cell and the neighboring cell where the terminal is located, which is an optional value.
  • Q qualmeas in the above formula indicates the reception quality of the sequence number on the PBSCH or the reception of the symbol on the PBSCH.
  • Q rxlevmin in the above formula indicates the received power of the sequence number on the PBSCH or the received power of the symbol on the PBSCH.
  • each neighboring cell when determining that the priority cell list maintained by the terminal is empty, performing signal measurement on each neighboring cell, and obtaining measurement results corresponding to each neighboring cell, where each neighboring cell is a cell carried in the neighboring cell list. Identify each neighbor cell corresponding to each.
  • the neighbor cell list is a cell identifier of a neighboring cell that is configured by the network side in advance for the terminal and that carries the serving cell of the terminal.
  • each neighboring cell when the determined measurement result corresponding to each cell does not exist, When the measurement result of the first setting condition is met, the signal measurement is performed on each neighboring cell, and the measurement result corresponding to each neighboring cell is obtained, where each neighboring cell is a cell carried in the neighbor cell list of the serving cell where the terminal is currently located. Identify each neighboring cell corresponding to each other;
  • the neighboring cell corresponding to the determined measurement result that satisfies the second setting condition is selected as the target cell for performing cell reselection by the terminal, and the cell identifier of the selected target cell is saved in the priority cell list.
  • the RSRP value and/or the RSRQ value are included in the measurement result, and the other measurement results may be specifically referred to, and are not described in the embodiment of the present invention.
  • the specific cell corresponding to the measurement result that meets the first setting condition in the measurement result corresponding to each of the obtained cells may be determined by the following manner:
  • S rxlev is calculated according to the S criterion calculation formula
  • S qual is calculated according to the neighboring cell RSRQ value according to the S criterion calculation formula
  • the neighboring cell with the highest rank is used as the target cell.
  • the measurement result of the current serving cell of the terminal may be obtained by using a pre-measurement, or the neighboring cells corresponding to the cell identifier in the neighboring cell list are simultaneously measured, and the present invention does not specifically limit the present invention.
  • the first quality threshold may be set to be greater than the third quality threshold, and the first power threshold is greater than the third power threshold.
  • the neighboring cell whose rank is greater than the signal quality level of the serving cell selects the neighboring cell with the largest signal quality level as the target cell.
  • the second quality threshold may be set to be greater than the fourth quality threshold, and the second power threshold is greater than the fourth power threshold.
  • the signal quality level is greater than the signal quality level of the serving cell, and the neighboring cell that has the highest signal quality level and meets the threshold corresponding to the normal coverage level or the threshold corresponding to the extended coverage level is selected as the target cell.
  • the coverage level corresponding to the determination condition included in the first setting condition may be lower than the coverage level corresponding to the determination condition included in the second setting condition. For example, when the neighboring cell satisfies the normal coverage level in the determination condition included in the first setting condition, the neighboring cell in the condition of the determination included in the second setting condition satisfies the second coverage level.
  • the UE in order to enable the UE to select a cell with a relatively good signal receiving quality or signal receiving power, determine that the priority cell list maintained by the terminal is empty, or determine that the obtained corresponding measurement result of each cell does not exist to satisfy the first setting.
  • the conditional measurement result may be used to start a preset timer, and each time the timer expires, performing signal measurement on each neighboring cell and the current serving cell where the terminal is located, where each neighboring cell is the Each neighboring cell corresponding to each cell identifier carried in the neighbor cell list of the current serving cell where the terminal is located.
  • Each neighboring cell obtained by measuring each timeout of the timer and the current service is small If the measurement result of the current serving cell is smaller than the measurement result of any neighboring cell, the neighboring cell corresponding to the largest measurement result is selected as the terminal to perform the cell in the measurement result corresponding to each neighboring cell. Reselected target cell.
  • the timer is started again every time the signal measurement is performed on each neighboring cell corresponding to each cell identifier that is carried in the neighbor cell list of the current serving cell where the terminal is located, and the current serving cell.
  • Step 401 When it is determined that the priority cell list maintained by the terminal is empty, or the determined measurement result corresponding to each cell does not exist, the measurement result that satisfies the first setting condition does not exist. Go to step 402.
  • Step 402 Perform signal measurement on each neighboring cell to obtain a measurement result corresponding to each neighboring cell, where each neighboring cell is a neighbor corresponding to each cell identifier carried in the neighboring cell list of the current serving cell where the terminal is located. Community. Step 403 and step 405 are performed.
  • Step 403 Determine, in the measurement result corresponding to each neighboring cell, that the measurement result that meets the second setting condition exists. Go to step 404.
  • Step 404 Select the determined neighboring cell corresponding to the measurement result that meets the second setting condition as the target cell that performs cell reselection by the terminal, and save the cell identifier of the selected target cell in the priority cell list.
  • step 405 a timer is started.
  • step 406 it is determined that the started timer expires, and step 407 is performed.
  • Step 407 Perform signal measurement on each neighboring cell and the current serving cell where the terminal is located, where each neighboring cell is a corresponding one of each cell identifier carried in the neighboring cell list of the current serving cell where the terminal is located. Neighboring cell. Go to step 408,
  • Step 408 If it is determined that the measurement result of the current serving cell is smaller than the measurement result of any neighboring cell, select the neighboring cell corresponding to the largest measurement result as the terminal to perform cell reselection in the measurement result corresponding to each neighboring cell. Target cell.
  • the timer is set to ensure that the terminal performs signal measurement on each neighboring cell corresponding to the neighboring cell identifier carried in the neighboring cell list at intervals, and determines whether the serving cell of the terminal is each carried in the neighboring cell list. A cell with the highest signal quality value or signal power value in the neighboring cell. Determine whether to replace the serving cell based on the measurement result.
  • the neighbor cell list when the system has multiple frequency points and different frequency networking, includes an intra-frequency neighbor cell list and an inter-frequency neighbor cell list.
  • the intra-frequency neighbor cell list is used to carry the same-frequency neighbor cell identifier
  • the inter-frequency neighbor cell list is used to carry the inter-frequency neighbor cell identifier.
  • the neighbor cell list includes an intra-frequency neighbor cell list and an inter-frequency neighbor cell list.
  • the neighboring cell list includes the same-frequency neighboring cell list and the inter-frequency neighboring cell list
  • the neighboring cell performs signal measurement, and the measurement result corresponding to each neighboring cell is obtained, and the obtained measurement result corresponding to each neighboring cell is determined.
  • the measurement result of the second setting condition is met, where each neighboring cell is a neighboring cell corresponding to each cell identifier carried in the neighboring cell list of the serving cell where the terminal is currently located, and the specific manner may be as follows:
  • the inter-frequency neighboring cell corresponding to the measurement result that satisfies the second setting condition is selected as the terminal for cell reselection.
  • Target cell
  • the same-frequency neighboring cell is a corresponding intra-frequency neighboring cell corresponding to each cell identifier carried in the same-frequency neighboring cell list;
  • the cell identifier of the neighbor cell list neighboring cell includes an intra-frequency neighbor cell identifier and an inter-frequency neighbor cell identifier.
  • the neighboring cell corresponding to the measurement result that satisfies the second setting condition is selected as the target cell for cell reselection by the terminal, which may be specifically:
  • the inter-frequency neighboring cells are the inter-frequency neighboring cells corresponding to the inter-frequency neighboring cell identifiers carried in the neighboring cell list.
  • the measurement result that satisfies the second setting condition exists in the measurement result corresponding to each of the inter-frequency neighboring cells, the measurement result that meets the second setting condition is determined among the measurement results corresponding to the obtained inter-frequency neighboring cells.
  • the signal measurement is performed on each of the same-frequency neighboring cells, and the measurement results corresponding to the intra-frequency neighboring cells are obtained.
  • the frequency neighboring cell is the same-frequency neighboring cell corresponding to each of the same-frequency neighboring cell identifiers in the neighboring cell list, and the measurement result that satisfies the second setting condition in the measurement result corresponding to each intra-frequency neighboring cell is determined.
  • the inter-frequency neighboring cell is relatively close to the terminal, and therefore the probability of satisfying the second setting condition in the inter-frequency neighboring cell is greater. Therefore, the inter-frequency neighboring cell is preferentially measured.
  • the rate of selecting the target cell is improved, thereby shortening the time for the terminal to select the target cell, and reducing the power consumption of the terminal.
  • the same-frequency cell identifier and the inter-frequency cell identifier may be carried in the priority cell list.
  • the target cell for cell reselection can be specifically implemented in the following manner:
  • the measurement result that meets the first setting condition exists in the measurement result corresponding to each of the inter-frequency cells
  • the measurement result that satisfies the first setting condition among the measurement results corresponding to the obtained different frequency cells is determined.
  • the signal measurement is performed on each of the same-frequency cells, and the measurement results corresponding to the same-frequency cells are obtained, and the same-frequency cells are obtained. And determining, by the first-frequency cell corresponding to each of the same-frequency cell identifiers that are carried in the priority cell list, the measurement result that meets the first setting condition in the measurement result corresponding to each of the obtained same-frequency cells.
  • the priority cell list may also include an inter-frequency cell list and an intra-frequency cell list. Performing signal measurement on each neighboring cell corresponding to each cell identifier carried in the neighboring cell list, and obtaining measurement results corresponding to each neighboring cell, and determining that the measured measurement result corresponding to each neighboring cell meets the first setting condition As a result, the cell corresponding to the measurement result that meets the first setting condition is selected as the target cell for performing cell reselection by the terminal, which may be specifically:
  • the measurement result that satisfies the first setting condition among the measurement results corresponding to the obtained different-frequency cells is determined.
  • the signal measurement is performed on each co-frequency cell, and the measurement result corresponding to each co-frequency cell is obtained, where the same-frequency cell is the same
  • Each intra-frequency cell corresponding to each cell identifier carried in the frequency cell list; The measurement result that satisfies the first setting condition among the measurement results corresponding to the obtained same-frequency cells is determined.
  • the inter-frequency neighboring cell since the inter-frequency neighboring cell is generally closer to the terminal, the probability of satisfying the first setting condition in the inter-frequency neighboring cell is greater. Therefore, the measurement of the inter-frequency neighboring cell is preferentially performed, and the rate of selecting the target cell is improved, thereby shortening the time for the terminal to select the target cell, and reducing the power consumption of the terminal.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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  • Computer Networks & Wireless Communication (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

Conformément à des modes de réalisation, la présente invention concerne un procédé et un terminal pour déterminer une cellule cible de resélection, qui sont utilisés pour résoudre le problème dans l'état de la technique d'importante consommation d'énergie lors de la détermination d'une cellule cible de re-sélection par un terminal. Le procédé consiste : lors de la détermination du fait qu'une liste de cellules préférée conservée par un terminal n'est pas vide, à réaliser une mesure de signal sur des cellules pour obtenir des résultats de mesure correspondant aux cellules, les cellules étant des cellules correspondant à des identificateurs de cellule transportés dans la liste de cellules préférée ; à déterminer qu'un résultat de mesure satisfaisant une première condition définie existe dans les résultats de mesure obtenus correspondant aux cellules ; et à sélectionner une cellule correspondant aux résultats de mesure déterminés satisfaisant la première condition définie pour servir de cellule cible pour une re-sélection de cellule réalisée par le terminal.
PCT/CN2014/095984 2014-12-31 2014-12-31 Procédé, appareil et terminal pour déterminer une cellule cible de resélection WO2016106716A1 (fr)

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PCT/CN2014/095984 WO2016106716A1 (fr) 2014-12-31 2014-12-31 Procédé, appareil et terminal pour déterminer une cellule cible de resélection
CN201480037242.6A CN106171007B (zh) 2014-12-31 2014-12-31 一种确定重选目标小区的方法、装置及终端

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CN113301618B (zh) 2017-03-24 2022-10-04 华为技术有限公司 通信方法、网络设备和终端
CN112584426B (zh) * 2019-09-30 2022-12-06 华为技术有限公司 一种系统帧号和帧定时偏差sftd测量方法
CN110856207B (zh) * 2019-10-24 2022-11-08 维沃移动通信有限公司 一种邻小区测量方法及终端设备
CN114339952B (zh) * 2020-09-29 2023-07-25 紫光展锐(重庆)科技有限公司 一种多模终端通信方法及通信装置

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