WO2017063125A1 - Procédé de resélection de cellule et équipement utilisateur - Google Patents

Procédé de resélection de cellule et équipement utilisateur Download PDF

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Publication number
WO2017063125A1
WO2017063125A1 PCT/CN2015/091768 CN2015091768W WO2017063125A1 WO 2017063125 A1 WO2017063125 A1 WO 2017063125A1 CN 2015091768 W CN2015091768 W CN 2015091768W WO 2017063125 A1 WO2017063125 A1 WO 2017063125A1
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WIPO (PCT)
Prior art keywords
cell
reselection
factor
target cell
user terminal
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PCT/CN2015/091768
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English (en)
Chinese (zh)
Inventor
耿婷婷
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2015/091768 priority Critical patent/WO2017063125A1/fr
Priority to CN201580050055.6A priority patent/CN107211335B/zh
Publication of WO2017063125A1 publication Critical patent/WO2017063125A1/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

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a cell reselection method and a user terminal.
  • a user equipment (UE) in a non-proprietary state usually performs a cell reselection process.
  • the UE in the non-proprietary state includes the idle state, the Cell Paging Channel (CELL-PCH), the UTRAN Registration Area Paging Channel (URA-PCH), and the cell.
  • the UE in the non-proprietary state is the UE in the idle state.
  • the network server first broadcasts the priority list of each cell in the system message block, and the idle state UE selects the priority according to the priority list in the priority list.
  • the high to low order performs signal measurements on the cell, thereby camping on the cell that satisfies the camp condition.
  • this may result in a large number of idle state UEs camping in the same cell with higher priority at the same time, while the number of idle state UEs camping in the lower priority cell is smaller, so that the cells are between the cells.
  • the load is not balanced, which reduces network resource utilization.
  • the embodiment of the invention discloses a cell reselection method and a user terminal, which can improve load balancing between cells and improve network resource utilization.
  • a first aspect of the embodiments of the present invention discloses a cell reselection method, including:
  • the measurement list includes co-frequency and/or inter-frequency reselection parameters, where the co-frequency is a frequency point of a current serving cell of the user terminal, and the inter-frequency is current with the user terminal.
  • the selecting, by the target cell set, the first cell to perform camping includes:
  • the first cell is randomly selected from the target cell set and camped on the first cell.
  • the selecting, by the target cell, the first cell to camp includes:
  • the method further includes:
  • the second cell is selected from the target cell set in a preset order, and the reselection factor of the second cell is obtained;
  • the method further includes:
  • the method further includes:
  • the method further includes:
  • a second possible implementation manner of the first aspect of the embodiment of the present invention or the embodiment of the present invention A third possible implementation manner of the first aspect, in a seventh possible implementation manner of the first aspect of the present disclosure, the selecting, by the preset sequence, the first cell from the target cell set And obtaining the reselection factor of the first cell, the method further includes:
  • the measurement list further includes the reselection factor of the same frequency and/or the inter-frequency, and the acquiring the reselection factor of the first cell includes:
  • a second aspect of the embodiment of the present invention discloses a user terminal, including:
  • An obtaining module configured to obtain a measurement list from a network server, where the measurement list includes co-frequency and/or inter-frequency reselection parameters, where the co-frequency is a frequency point of a current serving cell of the user terminal, and the inter-frequency is a frequency point different from a frequency point at which the current serving cell of the user terminal is located;
  • a measuring module configured to perform a message on a cell under the frequency of the user terminal in the measurement list No. measurement, obtaining the same measurement parameter corresponding to the reselection parameter type of each cell;
  • a selecting module configured to select, from a cell in the user terminal support frequency point, a cell that is better than the reselection parameter to form a target cell set
  • a camping module configured to select a first cell from the set of target cells to camp.
  • the camping module selects, from the target cell set, the specific The way is:
  • the first cell is randomly selected from the target cell set and camped on the first cell.
  • the resident module includes a selecting submodule, an obtaining submodule, a determining submodule, and a resident submodule. among them:
  • the selecting submodule is configured to select the first cell from the target cell set according to a preset sequence
  • the obtaining submodule is configured to acquire a reselection factor of the first cell
  • the determining sub-module is configured to generate a random number for the first cell, and determine whether the random number is less than or equal to the reselection factor, where the random number ranges from 0 to 1;
  • the resident submodule is configured to camp on the first cell when the determining submodule determines that the random number is less than or equal to the reselection factor.
  • the acquiring sub-module is further configured to: when the determining sub-module determines that the random number is greater than the reselection factor, obtain the selecting sub-module to select a cell from the target cell set according to the preset sequence. Number of selections;
  • the determining sub-module is further configured to determine whether the selected number of times is less than a preset number of selected control times, and if yes, triggering the selecting sub-module to select a second cell from the target cell set again according to the preset sequence; If not, the camping submodule is triggered to camp on the first cell.
  • the second possible implementation manner of the second aspect of the embodiment of the present invention or the third possible implementation manner of the second aspect of the embodiment of the present invention is The user terminal further includes:
  • a configuration module configured to configure an average reselection factor for each cell in the target cell set, where the average reselection factor is equal to a reciprocal of the number of cells in the target cell set;
  • the obtaining module is further configured to acquire, from the network server, load information of each cell in the target cell set;
  • the selecting module is further configured to select a maximum load cell from the target cell set according to the load information
  • the user terminal further includes:
  • an adjusting module configured to reduce an average reselection factor of the maximum load cell, obtain a reselection factor of the maximum load cell, and increase a remaining cell of the target cell set except the maximum load cell An average reselection factor is obtained, and a reselection factor of the remaining cells is obtained, wherein a sum of a reselection factor of the maximum load cell and a reselection factor of the remaining cells is 1.
  • the user terminal further includes:
  • a configuration module configured to configure an average reselection factor for each cell in the target cell set, where the average reselection factor is equal to a reciprocal of the number of cells in the target cell set;
  • An identification module configured to identify, from the target cell set, a target cell that is different from a historical camping cell of the user terminal, where a frequency of the target cell is different from a frequency of a historical resident cell of the user terminal ;
  • An adjusting module configured to increase an average reselection factor of the target cell, obtain a reselection factor of the target cell, and reduce an average reselection of the remaining cells in the target cell set except the target cell And a factor of obtaining a reselection factor of the remaining cells, wherein a sum of a reselection factor of the target cell and a reselection factor of the remaining cells is 1.
  • the second possible implementation manner of the second aspect of the embodiment of the present invention or the third possible implementation manner of the second aspect of the embodiment of the present invention is The user terminal further includes:
  • a configuration module configured to configure an average reselection factor for each cell in the target cell set, where the average reselection factor is equal to a reciprocal of the number of cells in the target cell set;
  • the selecting module is further configured to select a highest priority cell from the target cell set
  • the user terminal further includes:
  • an adjusting module configured to increase an average reselection factor of the highest priority cell, obtain a reselection factor of the highest priority cell, and reduce a target of the target cell set except the highest priority cell
  • the average reselection factor of the remaining cells is obtained by the reselection factor of the remaining cells, wherein the sum of the reselection factor of the highest priority cell and the reselection factor of the remaining cells is 1.
  • the user terminal further includes:
  • a configuration module configured to configure an average reselection factor for each cell in the target cell set, where the average reselection factor is equal to a reciprocal of the number of cells in the target cell set;
  • the obtaining module is further configured to acquire, from the network server, load information of each cell in the target cell set;
  • the selecting module is further configured to select a maximum load cell from the target cell set according to the load information, and select a highest priority cell from the target cell set;
  • the user terminal further includes:
  • An identification module configured to identify, from the target cell set, a target cell that is different from a historical camping cell of the user terminal, where a frequency of the target cell is different from a frequency of a historical resident cell of the user terminal ;
  • An adjusting module configured to reduce an average reselection factor of the maximum load cell, obtain a reselection factor of the maximum load cell, increase an average reselection factor of the target cell, and obtain a reselection factor of the target cell And increasing an average reselection factor of the highest priority cell to obtain a reselection factor of the highest priority cell, and according to the reselection factor of the maximum load cell, the reselection factor of the target cell, and the a reselection factor of the highest priority cell, adjusting an average reselection factor of the remaining cells of the target cell set except the maximum load cell, the target cell, and the highest priority cell, to obtain the remaining cells And a reselection factor, wherein a reselection factor of the maximum load cell, a reselection factor of the target cell, and a reselection factor of the highest priority cell and a reselection factor of the remaining cells are 1.
  • the measurement list further includes the reselection factor of the same frequency and/or the inter-frequency, and the specific manner in which the acquisition sub-module acquires the reselection factor of the first cell is:
  • a third aspect of the embodiment of the present invention discloses a user terminal, including:
  • a receiver configured to receive a measurement list from a network server, where the measurement list includes co-frequency and/or inter-frequency reselection parameters, where the co-frequency is a frequency point of a current serving cell of the user terminal, where the inter-frequency is a frequency point different from a frequency point at which the current serving cell of the user terminal is located;
  • a processor configured to perform signal measurement on a cell in a frequency point of the user terminal in the measurement list, to obtain a measurement parameter corresponding to the reselection parameter type corresponding to each cell; and support a frequency from the user terminal In the cell under the point, the cell whose measurement parameter is better than the reselection parameter is selected to form a target cell set; and the first cell is selected from the target cell set to camp.
  • the processor selects, by using the target cell set, a specific manner in which the first cell resides. for:
  • the first cell is randomly selected from the target cell set and camped on the first cell.
  • the processor selects, by using the target cell set, a specific manner in which the first cell resides. for:
  • the processor is further configured to: when the random number is greater than the reselection factor, obtain a number of times of selecting a cell from the target cell set according to the preset sequence; and determine whether the selected number of times is less than a preset Selecting the number of times of control; when the number of times of selection is less than the number of times of the preset selection control, selecting the second cell from the set of target cells again in a preset order, and acquiring the reselection of the second cell a factor; camping to the first cell when the number of selected times is equal to the preset number of selected control times.
  • the processor is further configured to: before selecting the first cell from the target cell set according to the preset sequence, and acquiring a reselection factor of the first cell, each of the target cell set Mean cells are configured with an average reselection factor, wherein the average reselection factor is equal to a reciprocal of the number of cells in the target cell set; and load information of each cell in the target cell set is obtained from the network server; And selecting, by the load information, a maximum load cell from the target cell set, and reducing an average reselection factor of the maximum load cell, to obtain a reselection factor of the maximum load cell; and increasing the target cell set And an average reselection factor of the remaining cells except the maximum load cell, where a reselection factor of the remaining cells is obtained, wherein a sum of a reselection factor of the maximum load cell and a reselection factor of the remaining cells Is 1.
  • the second possible implementation manner of the third aspect of the embodiment of the present invention or the third possible implementation manner of the third aspect of the embodiment of the present invention is ,
  • the processor is further configured to: before selecting the first cell from the target cell set according to the preset sequence, and acquiring a reselection factor of the first cell, each of the target cell set Mean cells are configured with an average reselection factor, wherein the average reselection factor is equal to a reciprocal of the number of cells in the target cell set; and a target different from the user terminal historical camp cell is identified from the target cell set a cell, and increasing an average reselection factor of the target cell, to obtain a reselection factor of the target cell, where a frequency of the target cell is different from a frequency of a historical resident cell of the user terminal; Reducing an average reselection factor of the remaining cells of the target cell set except the target cell, to obtain a reselection factor of the remaining cell, where the reselection factor of the target cell and the remaining cells are The sum of the reselection factors is 1.
  • the processor is further configured to: select the selected from the target cell set according to the preset sequence Before the first cell, and acquiring the reselection factor of the first cell, configuring an average reselection factor for each cell in the target cell set, where the average reselection factor is equal to the cell in the target cell set a reciprocal of the quantity; selecting a highest priority cell from the set of target cells, and increasing an average reselection factor of the highest priority cell to obtain a reselection factor of the highest priority cell; and, reducing the And an average reselection factor of the remaining cells of the target cell set except the highest priority cell, where a reselection factor of the remaining cell is obtained, where the reselection factor of the highest priority cell and the remaining cell
  • the sum of the reselection factors is 1.
  • the processor is further configured to: before selecting the first cell from the target cell set according to the preset sequence, and acquiring a reselection factor of the first cell, each of the target cell set Mean cells are configured with an average reselection factor, wherein the average reselection factor is equal to a reciprocal of the number of cells in the target cell set; and load information of each cell in the target cell set is obtained from the network server; The load information selects a maximum load cell from the target cell set, and reduces an average reselection factor of the maximum load cell to obtain a reselection factor of the maximum load cell; and identifies from the target cell set a target cell different from the historical cell of the user terminal, and increasing an average reselection factor of the target cell, to obtain a reselection factor of the target cell, where the frequency of the target cell is related to the user The frequency of the terminal historical camping cell is different; the highest priority cell is selected from the target cell set, and the average reselection of the highest priority
  • the selection factor, the reselection factor of the target cell, and the reselection factor of the highest priority cell and the reselection factor of the remaining cells are 1.
  • the measurement list further includes the reselection factor of the same frequency and/or the different frequency, where
  • the specific manner in which the processor obtains the reselection factor of the first cell is:
  • the user terminal after acquiring the measurement list including the reselection parameters of the same frequency and/or the different frequency from the network server, the user terminal performs signal measurement on the cell under the frequency of the user terminal in the measurement list, and obtains each Corresponding to the same measurement parameter of the reselection parameter type, and selecting, from the cell under the support frequency of the user terminal, a cell having a measurement parameter superior to the reselection parameter to form a target cell set, thereby obtaining from the target cell set The first cell is selected for camping.
  • the user terminal may perform signal measurement on the cell in the measurement list whose support frequency is selected, obtain a target cell set that satisfies the camping condition, and then select a cell to camp in the target cell set.
  • the load pressure of the high-priority cell is reduced to a certain extent, thereby improving load balancing between cells and improving network resource utilization.
  • FIG. 1 is a schematic diagram of a network architecture disclosed in an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a cell reselection method according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of another cell reselection method according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of still another cell reselection method according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of still another cell reselection method according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of still another cell reselection method according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a user terminal according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of another user terminal according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of still another user terminal according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of still another user terminal according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of still another user terminal according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of still another user terminal according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of still another user terminal according to an embodiment of the present invention.
  • the embodiment of the invention discloses a cell reselection method and a user terminal, which can improve load balancing between cells and improve network resource utilization. The details are described below separately.
  • FIG. 1 is a schematic diagram of a network architecture disclosed in an embodiment of the present invention.
  • a network server and a user terminal may be included.
  • the network server may include, but is not limited to, a base station, a radio network controller, a base station controller, etc.
  • the user terminal may include, but is not limited to, a mobile phone, a tablet, a personal digital assistant (PDA), and a mobile internet device (Mobile). Internet Device, MID), etc.
  • PDA personal digital assistant
  • MID mobile internet device
  • the user terminal may obtain reselection parameters, neighboring cells, and/or phases of frequency points of neighboring cells and/or neighboring cells from the network server.
  • Information such as the load of the frequency of the neighboring cell, the priority of the neighboring cell and/or the frequency of the neighboring cell, so that the user terminal can implement cell reselection quickly and reliably.
  • FIG. 2 is a schematic flowchart of a cell reselection method according to an embodiment of the present invention.
  • the cell reselection method may include the following steps:
  • the user terminal acquires a measurement list from a network server, where the measurement list includes co-selection parameters of the same frequency and/or different frequency.
  • the network server may broadcast the measurement list to all the user terminals in the current cell, and may also send the measurement list to each user terminal separately, which is not limited in the embodiment of the present invention. Therefore, the manner in which the user terminal obtains the measurement list from the network server may be broadcast by the network server, or may be sent by the network server to the user terminal separately.
  • the same frequency is the frequency point where the current serving cell of the user terminal is located, and the different frequency is the frequency point different from the frequency point of the current serving cell of the user terminal.
  • the reselection parameters of the same frequency and/or different frequency can be understood as the reselection parameters of the frequency point, and the frequency point in the measurement list is the frequency point of the neighboring cell of the current serving cell of the user terminal.
  • the reselection parameters of the same frequency and/or different frequency can also be understood as the reselection parameters of the cells at each frequency point, that is, the reselection parameters of the neighboring cells of the current serving cell of the user terminal. .
  • the reselection parameter may include, but is not limited to, a reference signal receiving quality threshold, a reference signal receiving power threshold, a signal to interference and noise ratio threshold, a path loss threshold, a delay time, etc. of a frequency point of each neighboring cell or each neighboring cell. .
  • the reselection parameter included in the measurement list sent by the network server or sent to the user terminal may be a reselection parameter of the frequency point of the neighboring cell of the current serving cell of the user terminal, as shown in Table 1 or as a user.
  • the reselection parameters of the neighboring cell of the current serving cell of the terminal may also be reselection parameters of the network standard of the neighboring cell of the current serving cell of the user terminal, such as a 2G, 3G, 4G network system, as shown in Table 3,
  • the embodiments of the present invention are not limited.
  • Table 1 Measurement list of reselection parameters of the frequency point where the neighboring cell is located
  • the embodiment of the present invention mainly expands the reselection parameter of the frequency point of the neighboring cell of the current serving cell of the user terminal included in the measurement list.
  • the user equipment performs signal measurement on the cell in the measurement list of the user terminal supporting the frequency point, and obtains measurement parameters corresponding to the reselection parameter type corresponding to each cell.
  • the user terminal after acquiring the measurement list of the reselection parameters of the frequency point to which the cell adjacent to the cell in which the cell is located, the user terminal performs signal measurement on each cell in the measurement list in the measurement terminal. Thereby obtaining the measurement parameters corresponding to each cell.
  • the user terminal may perform signal measurement on each cell in each frequency point according to the order in which the frequency points are arranged in the measurement list, or may be in the order of the priority of the frequency points for each of the frequency points.
  • the cell performs signal measurement, which is not limited in the embodiment of the present invention.
  • the parameter type included in the measurement parameter corresponding to each cell is the same as the parameter type included in the reselection parameter of the frequency point to which the cell belongs. That is to say, when the reselection parameter of a certain frequency point includes the reference signal receiving quality threshold of the frequency point, the reference signal receiving power threshold, and the signal to interference and noise ratio threshold, the user terminal will be directed to the signal receiving quality, the signal receiving power, and The signal to interference and noise ratio is used to perform signal measurement on the cell under the frequency point, thereby obtaining signal receiving quality, signal receiving power, and signal to interference and noise ratio corresponding to each cell in the frequency point.
  • the frequency points include F1, F2, F3, F4, and F5, and the user terminal.
  • the supported frequency points are F2, F3, F5, and F6.
  • the user terminal After the user terminal obtains the measurement list, the user terminal performs signal measurement on the cells under the frequency points F2, F3, and F5, respectively.
  • the reselection parameter of the frequency point in the measurement list is the reference signal reception quality threshold and the signal to interference and noise ratio.
  • the cell under the F2 frequency point has cell2 and cell3, the cell under the F3 frequency point has cell4, and the cell under the F5 frequency point has cell6.
  • the user terminal will perform signal measurement on the five cells of cell2, cell3, cell4, cell6, and cell7, respectively. Thereby, the signal reception quality corresponding to each cell and the measurement parameter of the signal to interference and noise ratio are obtained.
  • the user terminal selects, from the cell supported by the user terminal, a cell whose measurement parameter is better than the reselection parameter to form a target cell set.
  • the user terminal performs signal measurement on a certain cell under the support frequency point in the measurement list, and obtains the measurement parameter corresponding to the cell, and then the measurement parameter and the reselection parameter of the frequency point where the cell is located. For comparison, if the measurement parameter is better than the reselection parameter, then the cell is used as a cell in the target cell set.
  • the measurement parameter obtained by the user terminal after performing signal measurement on the cell also includes the cell.
  • each parameter in the measurement parameter is greater than the reselection parameter; when the frequency of a certain cell belongs to the reselection
  • the measurement parameter obtained by the user terminal after performing signal measurement on the cell also includes the path loss of the cell. Therefore, the measurement parameter is better than the reselection parameter, which can be understood as: the path loss is less than the path loss threshold.
  • the user terminal selects a first cell from the target cell set to camp.
  • the first cell is selected from the target cell set to camp.
  • the specific manner in which the user terminal selects the first cell to camp from the target cell set may be:
  • the first cell is randomly selected from the target cell set for camping. That is to say, the probability that each cell in the target cell set is selected by the user terminal is the same, so that most user terminals can be prevented from simultaneously camping on a cell with a larger load, thereby reducing the load pressure of the larger cell and achieving each Small-area load balancing.
  • the user terminal when performing cell reselection, may perform signal measurement on the cell under the support frequency point by using the reselection parameter in the measurement list, thereby selecting a cell that satisfies the camping condition. Then, the first cell is selected to camp in the cells, so that the load pressure of the larger cell can be dispersed to a certain extent, thereby improving the load balance between the cells and improving the utilization of network resources.
  • FIG. 3 is a schematic flowchart diagram of another cell reselection method according to an embodiment of the present invention.
  • the cell reselection method may include the following steps:
  • the user terminal acquires a measurement list from a network server, where the measurement list includes co-selection parameters of the same frequency and/or different frequency.
  • S302 The user terminal performs signal measurement on the cell in the measurement list of the user terminal supporting the frequency point, and obtains a measurement parameter corresponding to the reselection parameter type corresponding to each cell.
  • the user terminal selects, from the cell in the user terminal support frequency point, a cell that is better than the reselection parameter to form a target cell set.
  • the user equipment selects a first cell from the target cell set according to a preset sequence, and acquires a reselection factor of the first cell.
  • the user terminal may configure a reselection factor for each cell in the target cell set, where the reselection factor is also The probability that the user terminal will successfully reside after being selected.
  • the sum of the reselection factors of all the cells in the target cell set is 1.
  • the user terminal selects the first cell from the target cell set in a preset order, and acquires the weight of the first cell locally. Selection factor.
  • the preset sequence may be the sequence of the frequency of the cell in the measurement list, or the priority of the frequency of the cell, which is not limited in the embodiment of the present invention.
  • the cell in the target cell set selected by the user terminal from the measurement list has cell4, cell5, and cell6, and the reselection factors configured by the user terminal for the three cells are 0.5, 0.3, and 0.2, respectively, when the user terminal follows
  • the sequence of the frequency points of the cells in the measurement list is selected to the cell 6, the cell 6 reselection factor can be obtained from the local, which is 0.2.
  • the cell reselection factor may also be configured by the network server.
  • the measurement list includes a reselection factor for each frequency point, wherein the sum of the reselection factors of all frequency points in the measurement list is 1.
  • the reselection factor of the cell at each frequency point is the reselection factor of the frequency point. Therefore, the user terminal follows the target in a preset order. After the first cell is selected in the cell set, the reselection factor of the frequency point where the first cell is located may be obtained from the measurement list.
  • the reselection parameter measurement list of each frequency point broadcasted by the network server is as shown in Table 1, and the reselection factor configured for each frequency point, that is, the reselection factor of the frequency point F1 is 0.6, and the reselection of the frequency point F2 is performed.
  • the factor is 0.4.
  • the measurement parameters of the cells cell2 and cell3 are better than the reselection parameters of F1 and F2, respectively, and therefore, the user The terminal selects a cell cell2 in the cell 2 and the cell 3, and then the reselection factor of the cell 2 is obtained from the measurement list to be 0.6.
  • the user terminal may further configure a reselection factor for each cell in the target cell set.
  • the manner in which the network server configures the reselection factor for each frequency point in the measurement list is the same as the manner in which the user terminal configures the reselection factor for each cell in the target cell set.
  • the user terminal is configured as a reselection factor for each cell in the target cell set.
  • Step 11) The user terminal configures an average reselection factor for each cell in the target cell set
  • Step 12 The user terminal acquires load information of each cell in the target cell set from the network server.
  • Step 13) The user terminal selects a maximum load cell from the target cell set according to the load information, and reduces an average reselection factor of the maximum load cell to obtain a reselection factor of the maximum load cell.
  • Step 14 The user terminal increases the average reselection factor of the remaining cells of the target cell set except the maximum load cell, and obtains the reselection factors of the remaining cells.
  • the user terminal may configure an average reselection factor for each cell according to the number of cells in the target cell set.
  • the average reselection factor is equal to the reciprocal of the number of cells in the target cell set. That is to say, the reselection factor of each cell in the target cell set is the same, and the sum of the average reselection factors of all cells is 1.
  • the network server obtains the load information of each cell in real time, and the user terminal can The load information of each cell in the target cell set is obtained from the network server.
  • the user terminal can obtain the load size of each cell from the load information of each cell, so that the maximum load cell can be obtained. Since the reselection factors of the cells are all the average reselection factors at the initial time, after the user terminal obtains the maximum load cell, in order to avoid the overload of the maximum load cell, the average reselection factor of the maximum load cell may be lowered. , get the reselection factor of the largest load cell. The reselection factor of the maximum load cell is smaller than the reselection factor of any of the remaining cells.
  • the probability that the maximum load cell is successfully camped by the user terminal is reduced, thereby effectively reducing the load of the maximum load cell. Pressure to achieve load balancing between cells.
  • the manner in which the user terminal obtains the load information of each cell in the target cell set from the network server may be that the network server broadcasts the load information of each cell to each user terminal every interval of time; if the network server broadcasts or transmits the measurement information In the list, the reselection parameter is the reselection parameter of the cell, and the network server may also carry the load information of each cell in the broadcast or sent measurement list, which is not limited in the embodiment of the present invention.
  • the specific reduction factor of the average reselection factor of the maximum load cell may be determined by combining the load degree of the cell and the load difference between the cells in the target cell set, which is not limited in the embodiment of the present invention. For example, if the load of a certain cell in the target cell set is much larger than the load of the remaining cells, the average reselection factor of the cell may be reduced, and the average reselection factor of the cell may be reduced to 0. .
  • the maximum load cell may include one or more cells with the largest load in the target cell set, or one or more cells in the target cell set whose load is greater than the preset load, which is not limited in the embodiment of the present invention.
  • the user terminal while reducing the average reselection factor of the maximum load cell, the user terminal further adjusts the average reselection factor of the remaining cells in the target cell set according to the reselected factor of the reduced maximum load cell, thereby obtaining the rest.
  • the reselection factor of the cell That is to say, after reducing the average reselection factor of the maximum load cell, the user terminal needs to appropriately increase the average reselection factor of the remaining cells, so that the sum of the reselection factors of all the cells in the target cell set is always 1.
  • the user terminal may increase the average reselection factor of the remaining cells to the same reselection factor, or may be the weight of each cell in the remaining cells.
  • the degree of selection factor adjustment is different, but the reselection factor of the largest load cell is in the target cell set. The smallest of all cells.
  • the target cell set includes 5 cells, and the average reselection factor of each cell is 0.2, when the user terminal selects the largest load cell among the 5 cells, the average weight of the maximum load cell will be The selection factor is reduced to 0.1, then the user terminal can increase the average reselection factors of the remaining 4 cells to 0.225, and the average reselection factors of the remaining 4 cells can be adjusted to 0.2, 0.2, 0.25, and 0.25, respectively.
  • the specific manner in which the user terminal configures the reselection factor for each cell in the target cell set may further include the following steps on the premise of considering the relationship between the cell frequency and the historical cell frequency of the user terminal:
  • Step 21 The user terminal configures an average reselection factor for each cell in the target cell set
  • Step 22) The user terminal identifies a target cell different from the historical cell of the user terminal from the target cell set, and increases an average reselection factor of the target cell to obtain a reselection factor of the target cell.
  • Step 23 The user terminal reduces an average reselection factor of the remaining cells in the target cell set except the target cell, and obtains a reselection factor of the remaining cells.
  • the user terminal when performing cell camping, may record the frequency of the historical camped cell. Therefore, after selecting the target cell set, the user terminal may identify a target cell different from the historical camping cell from the target cell set according to the frequency point of the historical camped cell recorded by the user terminal, that is, the target cell The frequency point is different from the frequency of the user-resident historical resident cell. Then, the user terminal increases the average reselection factor of the target cell based on the average reselection factor of each cell in the target cell set, and obtains the reselection factor of the target cell, and reduces the remaining cells. The average reselection factor gives the reselection factors for the remaining cells. The reselection factor of the target cell is greater than the reselection factor of any of the remaining cells, and the sum of the reselection factor of the target cell and the reselection factor of the remaining cells must be 1.
  • the frequency of the target cell is different from the frequency of the historical cell of the user terminal. It can be understood that the frequency of the target cell is the frequency of the user terminal that has not previously camped in the frequency.
  • the user terminal may also identify a new frequency point of the network. If a cell in the target cell set has a new frequency point, the user terminal may also increase the reselection factor of the cell, so that the user terminal is selected. When the cell is reached, the success rate of camping on the cell is large, so that load balancing between cells is achieved to a certain extent.
  • the user terminal selects the first cell from the target cell set in the preset order, when the target cell different from the historical cell of the user terminal is selected, the possibility that the target cell is successfully resident by the user terminal is selected. It will increase, and for each user terminal, the cells different from the historical camping cells will be different, so that the load balance between the cells can be effectively improved.
  • the frequency points of the historical camped cells recorded by the user terminal are F3 and F4, and the frequency points supported by the user terminal include F2, F3, F4, and F5, and the measurement list broadcast by the network server includes F1 and F2. Reselection parameters for F3, F4, F6, and F7 frequency points. Therefore, the user terminal performs signal measurement on the cells in the F2, F3, and F4 frequency points in the measurement list, and assumes that the cell under the F2 frequency point has cell2 and cell3, and the cell under the F3 frequency point has cell4 and the cell under the F4 frequency point. There is cell5. Then, the user terminal performs signal measurement on the cell 2, cell 3, cell 4, and cell 5 to obtain measurement parameters corresponding to each cell.
  • the user terminal initially configures an average reselection factor of 1/3 for the cell 2, cell 3, and cell 4 cells.
  • the user terminal recognizes that the cell 2 and cell 3 cells are different from the frequency of the historical camping cell, the user terminal increases the average reselection factor of the cell 2 and the cell 3 cell to 0.4, and therefore, the average reselection factor of the cell 4 cell is Reduced to 0.2.
  • the user terminal may also increase the average reselection factor of the cell2 cell to 0.5, and increase the average reselection factor of the cell3 cell to 0.4, and then the average reselection factor of the cell4 cell is reduced to 0.1.
  • the specific manner in which the user terminal configures the reselection factor for each cell in the target cell set may include the following steps:
  • Step 31) The user terminal configures an average reselection factor for each cell in the target cell set
  • Step 32) The user terminal selects the highest priority cell from the target cell set, and increases the average reselection factor of the highest priority cell to obtain a reselection factor of the highest priority cell.
  • Step 33 The user terminal reduces an average reselection factor of the remaining cells of the target cell set except the highest priority cell, and obtains a reselection factor of the remaining cells.
  • the priority of each frequency point can be broadcast or transmitted simultaneously. Therefore, after selecting the target cell set from the cell under its support frequency, the user terminal may select the highest priority cell from the target cell set according to the priority. Then, on the basis that the reselection factors of each cell in the target cell set are average reselection factors, the average reselection factor of the highest priority cell may be appropriately increased to obtain the reselection of the highest priority cell. The factor, while reducing the average reselection factor of the remaining cells, obtains the reselection factors of the remaining cells. The reselection factor of the highest priority cell is greater than the reselection factor of any of the remaining cells, and the sum of the reselection factor of the highest priority cell and the reselection factor of the remaining cells shall be 1.
  • the user terminal selects the first cell from the target cell set according to the preset order, when the highest priority cell is selected, the possibility that the highest priority cell is successfully camped by the user terminal is better than other cells.
  • the maximum priority principle can be followed under the premise of ensuring a relatively balanced dwelling probability among cells, thereby achieving load balancing between cells to a certain extent.
  • the user terminal may consider any one of a cell load, a relationship between a cell frequency point and a historical resident cell frequency of the user terminal, and a cell priority. Or several factors to adjust the average reselection factor for each cell in the target cell set.
  • the cell load may be prioritized, that is, when the priority of the cell with the largest load is also the highest, the average weight of the cell may be The selection factor is reduced.
  • Mode 4 Under the premise of considering the relationship between the cell load, the cell frequency point, the historical cell frequency of the user terminal, and the cell priority, the user terminal configures the reselection factor for each cell in the target cell set. The steps can be included:
  • Step 41 The user terminal configures an average reselection factor for each cell in the target cell set
  • Step 42 The user terminal acquires load information of each cell in the target cell set from the network server.
  • Step 43) The user terminal selects a maximum load cell from the target cell set according to the load information, and reduces an average reselection factor of the maximum load cell to obtain a reselection factor of the maximum load cell.
  • Step 44 The user terminal identifies, from the target cell set, a target cell that is different from the historical cell of the user terminal, and increases an average reselection factor of the target cell to obtain a reselection factor of the target cell.
  • Step 45 The user terminal selects the highest priority cell from the target cell set, and increases the average reselection factor of the highest priority cell to obtain a reselection factor of the highest priority cell.
  • Step 46) The user terminal adjusts the target cell set except the maximum load cell, the target cell, and the highest priority cell according to the reselection factor of the maximum load cell, the reselection factor of the target cell, and the reselection factor of the highest priority cell.
  • the average reselection factor of the remaining cells is obtained by the weight of the remaining cells. Selection factor.
  • the user terminal may reduce the average reselection factor of the maximum load cell and increase the average weight of the target cell different from the historical camp resident cell of the user terminal.
  • the factor is selected and the average reselection factor of the highest priority cell is increased, and then the average reselection factor of the remaining cells is adjusted to obtain the reselection factor of the remaining cells.
  • the reselection factor of the largest load cell is the smallest, and the reselection factor of the highest priority cell and the target cell is relatively larger than the reselection factor of the remaining cells.
  • the user terminal After the user terminal selects the first cell from the target cell set according to the preset order, the possibility that the maximum load cell is successfully camped by the user terminal is small, and the target cell and the highest priority cell are successfully parked by the user terminal. Larger, so that the load can be more evenly distributed to each cell, and the load balance between the cells is improved, thereby improving the utilization of network resources.
  • the reselection factor of the adjusted maximum load cell the reselection factor of the target cell, the reselection factor of the highest priority cell, and the reselection factor of the remaining cells are still 1 .
  • the average reselection factor of the maximum load cell is mainly reduced, and the highest priority cell and the target cell may be The target cell set is selected from the remaining cells except the maximum load cell.
  • the user terminal may first configure the reselection factors of the cells in the target cell set as the average reselection factor, that is, each The cell reselection factor is 0.2.
  • the user terminal arranges the cells in the target cell set according to the load from the largest to the smallest, respectively, cell 6>cell 3>cell 4>cell 2>cell 5, which are arranged in descending order of priority, respectively Cell 6>cell 2>cell 3>cell 5>cell 4, and identify that the cell different from the historical camp cell of the user terminal is cell 3, the user terminal can obtain the maximum load cell as cell 6, and the highest priority cell is from cell 6 Selected from cells other than cell 6, which is cell2.
  • the user terminal can reduce the average reselection factor of the cell 6 cell to 0.08, increase the average reselection factor of the cell 2 cell to 0.3, and increase the average reselection factor of the cell 3 cell to 0.28, then the cell The reselection factor of the 4 cell and the cell 5 cell can be simultaneously reduced to 0.17.
  • step S305 The user terminal generates a random number for the first cell, and determines whether the random number is less than or equal to the reselection factor. If yes, step S306 is performed.
  • the user terminal may randomly generate a number (ie, a random number) within a digital range of 0 to 1, so that the user terminal may be in the preset order from the target.
  • the first cell is selected in the cell set, it does not directly camp on the first cell. That is to say, after the user terminal selects a certain cell, the success rate of camping on the cell is consistent with the reselection factor of the cell, thereby implementing load balancing between the cells.
  • the user terminal may determine whether the random number is less than or equal to a reselection factor of the first cell, and if the reselection factor is less than or equal to the reselection factor, the user terminal camps to If the first cell is greater than the reselection factor, the user terminal selects the second cell from the target cell set again in a preset order, acquires the reselection factor of the second cell, and then generates a second cell for the second cell. Random number, and compare the size of the random number with the reselection factor of the second cell until successfully camping on a certain cell in the target cell set.
  • the user terminal camps on the first cell, and ends the process.
  • the user terminal when it is determined that the random number generated by the user terminal is less than or equal to the reselection factor of the first cell, the user terminal camps on the first cell.
  • the user terminal when performing cell reselection, may configure a reselection factor for each cell, and the user terminal selects a cell in the target cell set that satisfies the camping condition according to a preset sequence.
  • the success rate of each cell being camped by the user terminal is the same as the reselection factor configured for each cell, and the load between the cells is balanced to a certain extent, thereby improving network resource utilization.
  • FIG. 4 is a schematic flowchart diagram of still another cell reselection method according to an embodiment of the present invention. As shown in FIG. 4, the cell reselection method may include the following steps:
  • the user terminal acquires a measurement list from a network server, where the measurement list includes co-selection parameters of the same frequency and/or different frequency.
  • the user equipment performs signal measurement on the cell in the measurement list of the user terminal supporting the frequency point, and obtains the measurement parameter corresponding to the reselection parameter type corresponding to each cell.
  • the user terminal selects, from the cell in the user terminal support frequency point, a cell whose measurement parameter is superior to the reselection parameter to form a target cell set.
  • the user equipment selects a first cell from the target cell set according to a preset sequence, and acquires a reselection factor of the first cell.
  • step S405. The user terminal generates a random number for the first cell, and determines whether the random number is less than or equal to the reselection factor. If yes, step S407 is performed; if no, step S406 is performed.
  • the user terminal when the random number generated by the user terminal is less than or equal to the reselection factor of the first cell, the user terminal directly camps on the first cell; when the random number generated by the user terminal is greater than the weight of the cell When the factor is selected, the user terminal further acquires the number of times the cell is selected from the target cell set in a preset order.
  • the user terminal acquires the number of times the cell is selected from the target cell set in a preset order, and determines whether the number of times of the selection is less than a preset number of control times. If yes, step S404 is performed; if no, step S407 is performed.
  • the preset number of control times may be introduced, that is, the maximum number of times the user terminal selects the cell from the target cell set according to the preset sequence. . Therefore, when the user terminal selects a cell from the target cell set in a preset order, the number of times the selected cell is selected is recorded.
  • the preset selection control number may be set by the user terminal according to the experience value, or may be set by the network server according to the number of cells in the measurement list that may meet the camping condition of the user terminal, which is not limited in the embodiment of the present invention.
  • the experience value may specifically be a threshold value obtained by the user terminal when the reselection of the ping-pong and the re-selection of the ping-pong are not performed when the cell reselection is performed in the past.
  • the user terminal may obtain the selected number of times of the selected cell, and determine whether the selected number of times is less than the preset number of selected control times.
  • the user terminal selects the second cell from the target cell set again according to the preset order; and when the selected number of times is equal to the preset selection control number, the user terminal directly Stay in the first cell.
  • the user terminal directly camps on the cell.
  • the user terminal camps on the first cell.
  • the user terminal when the random number generated by the user terminal is less than or equal to the reselection factor of the first cell, or the random number generated by the user terminal is greater than the reselection factor of the first cell, and is in a preset order When the number of selected cells in the target cell set is equal to the preset number of control times, the user terminal can directly camp on the first cell.
  • the user terminal when performing cell reselection, may directly camp on the cell when the number of times the selected cell is selected is equal to the preset number of control times, thereby preventing the user terminal from being unable to be used for a long time.
  • the situation of camping on the cell occurs, enabling the user terminal to camp on the cell that satisfies the camp condition faster.
  • FIG. 5 is a schematic flowchart of still another cell reselection method according to an embodiment of the present invention.
  • the cell reselection method may include the following steps:
  • step S501 The user terminal detects a moving speed of the user terminal, and determines whether the moving speed is less than or equal to a preset moving speed threshold. If yes, step S502 is performed; if not, the process ends.
  • the user terminal if the user terminal acquires the measurement list broadcasted or sent by the network server, the user terminal must perform cell reselection according to the reselection parameter in the measurement list. If the user terminal obtains the measurement list broadcasted or sent by the network server during the continuous movement process, even if the parameters of the currently camped cell of the user terminal satisfy the parking condition, the user terminal also continuously performs cell reselection, which may It will happen that the user terminal constantly switches back and forth between the cells of each frequency point, thereby increasing the power consumption of the user terminal.
  • the user terminal acquires its own moving speed if it detects that it is in the moving state, and determines whether the moving speed is less than or equal to the preset moving speed threshold.
  • the user terminal can be positioned by the positioning device to detect the moving speed.
  • the user terminal may obtain the measurement list from the network server to achieve a more uniform camping to each cell; and if the moving speed of the user terminal is greater than the pre- The mobile speed threshold is set.
  • the user terminal may ignore the measurement list broadcasted or sent by the network server.
  • the cell reselection is performed when the signal measurement parameter of the currently camped cell is less than a certain threshold, or is selected when performing cell reselection.
  • the cell that is the same as the frequency of the currently camped cell is camped, which can reduce the power consumption of the user terminal due to frequent cell reselection when the mobile terminal is moving at a high speed.
  • the preset speed threshold may be configured by the network server for each user terminal, or may be set by each user terminal according to the moving speed of the user terminal when the ping-pong is reselected according to the occurrence of the previous record, which is not limited in the embodiment of the present invention.
  • the user terminal acquires a measurement list from a network server, where the measurement list includes a reselection parameter of a frequency point supported by the user terminal.
  • the user equipment performs signal measurement on each cell in the frequency point to obtain a measurement parameter corresponding to the reselection parameter type corresponding to each cell.
  • S504 The user terminal selects, from all the cells in the frequency point, a cell whose measurement parameter is better than the reselection parameter to form a target cell set.
  • the user terminal randomly selects the first cell from the target cell set to camp, and ends the process.
  • the user terminal may randomly camp to a cell that satisfies the camping condition, or camp on the cell according to the reselection factor of each cell, and when the user terminal moves.
  • the speed is large, in order to avoid cell reselection of ping-pong, the user terminal may perform cell reselection when the signal measurement parameter of the currently camped cell is less than a certain threshold, or select and camp the current camped cell when performing cell reselection.
  • the cells with the same frequency point can avoid the cell reselection of the ping-pong due to the large moving speed of the user terminal, and reduce the power consumption of the user terminal.
  • FIG. 6 is a schematic flowchart diagram of still another cell reselection method according to an embodiment of the present invention. As shown in FIG. 6, the cell reselection method may include the following steps:
  • the user terminal acquires a measurement list from a network server, where the measurement list includes co-selection parameters of the same frequency and/or different frequency.
  • the user equipment selects the first cell from the cell in the measurement list of the user terminal support frequency according to the preset sequence as the current measurement cell.
  • the preset sequence may be an order in which the user terminal supports a frequency point (or a cell supporting a frequency point) in a measurement list, or may be a frequency point supported by the user terminal (or a supported frequency point).
  • the order of the priority of the cell is from high to low, which is not limited in the embodiment of the present invention.
  • the network server broadcasts or transmits the priority of each frequency point or cell to the user terminal
  • the user terminal selects the cell with the highest priority from the cell under its support frequency in order of priority from high to low, thereby
  • the cell is used as a measurement cell in which the user terminal currently needs to perform signal measurement.
  • the user equipment performs signal measurement on the measurement cell, and obtains measurement parameters corresponding to the reselection parameter type corresponding to the measurement cell.
  • the user terminal acquires a reselection factor of the measurement cell from the network server.
  • the network server configures a reselection factor for each neighboring cell according to the coverage, cell priority, and cell load of the cell adjacent to the cell where the user terminal is located, and the weight of all neighboring cells is The sum of the selection factors is 1.
  • a reselection factor is configured for the frequency point of each neighboring cell, and the sum of the reselection factors of all the frequency points is 1, then the reselection factor of the cell can be regarded as the reselection factor of the frequency point to which the cell belongs.
  • the network server broadcasts or sends the measurement list
  • the frequency point of each neighboring cell or the reselection factor of each neighboring cell may be broadcasted or sent to the user terminal.
  • the user terminal After the user terminal performs signal measurement on the measurement cell to obtain the measurement parameter of the measurement cell, it is further determined whether the measurement parameter is better than the reselection parameter of the measurement cell or the frequency point to which the measurement cell belongs, if it is better, then The user terminal acquires the reselection factor of the measurement cell from the network server.
  • the measurement list broadcasted or sent by the network server to the user terminal of the current cell includes all neighboring cells of the current cell, cell 1, cell 2, cell 3, cell 4, cell 5, cell 6, and cell. 7.
  • the cell reselection parameter of cell 8 then the network server will configure a reselection factor for each neighboring cell at the same time, assuming that the reselection factors of each neighboring cell are 0.3, 0.1, 0.07, 0.06, 0.08, respectively. 0.05, 0.2, 0.14.
  • the user terminal selects the cell 3 from the cell under the support frequency of the user terminal in the order of the cells in the measurement list, the user terminal may further obtain the reselection factor of the cell 3 from the measurement list to be 0.07.
  • step S605. The user terminal generates a random number for the measurement cell, and determines whether the random number is less than or equal to the reselection factor. If yes, step S606 is performed; if no, step S602 is performed.
  • the value of the random number ranges from 0 to 1, so that the user terminal may re-select the success rate of the measurement cell and the reselection of the cell after selecting the measurement cell according to the preset sequence.
  • the factors are consistent, so that the number of user terminals residing in each cell is distributed according to the reselection factor configured by the network server, so as to implement load balancing between the cells.
  • the user terminal when the random number is less than or equal to the reselection factor of the measurement cell, the user terminal directly camps on the measurement cell; when the random number is greater than the reselection factor of the measurement cell, the user terminal follows the preset sequence. The next cell of the first cell is selected as the current measurement cell from the cells in the user terminal support frequency.
  • the measurement list broadcasted or sent by the network server to the user terminal of the current cell includes all neighboring cells of the current cell, cell 1, cell 2, cell 3, cell 4, cell 5, cell 6, and cell 7.
  • the cell reselection parameter of the cell 8 then the network server configures a reselection factor for each neighboring cell according to the load condition of each neighboring cell, the cell priority, or the size of the coverage area, and all phases are respectively configured.
  • the sum of the reselection factors of the neighboring cells is 1.
  • the reselection factors of each neighboring cell are 0.3, 0.1, 0.07, 0.06, 0.08, 0.05, 0.2, and 0.14, respectively, and the cell corresponding to the support frequency of the user terminal is cell 1, cell 2, and cell 3.
  • Cell 4 cell 5 when the user terminal selects cell 1 as the measurement cell according to the order of the five cells in the measurement list, the user terminal can obtain the reselection factor of cell 1 as 0.3, when the user terminal generates When the random number is 0.2, the user terminal can camp on the cell cell 1.
  • the random number generated by the user terminal is 0.5
  • the user terminal selects the cell 2 as the measurement according to the order of the five cells in the measurement list.
  • Community That is to say, when the user terminal determines whether to camp on the measurement cell 1 by generating a random number, the probability that the cell 1 is successfully camped by the user terminal is 0.3.
  • the user terminal camps on the measurement cell.
  • the user terminal when it is determined that the random number generated by the user terminal is less than or equal to the reselection factor of the cell, the user terminal camps on the cell.
  • the network server can configure the cells according to factors such as load status, priority or coverage, signal stability, access success rate, dropped call rate, and the like of all neighboring cells of the current cell.
  • the success rate of camping on the cell is the same as the reselection factor of the configured cell, thereby reducing the priority to a certain extent.
  • the load pressure of a higher or higher load cell enables load balancing between cells and improves network resource utilization.
  • FIG. 7 is a schematic structural diagram of a user terminal according to an embodiment of the present invention.
  • the user terminal 700 can include:
  • the obtaining module 701 is configured to obtain a measurement list from the network server, where the measurement list includes co-selection parameters of the same frequency and/or different frequency.
  • the network server may broadcast the measurement list to all the user terminals in the current cell, and may also send the measurement list to each user terminal separately, which is not limited in the embodiment of the present invention. Therefore, the manner in which the obtaining module 701 obtains the measurement list from the network server may be broadcast by the network server, or may be sent by the network server to the user terminal 700 separately.
  • the same frequency is the frequency point at which the current serving cell of the user terminal 700 is located, and the different frequency is a frequency point different from the frequency point at which the current serving cell of the user terminal 700 is located.
  • the reselection parameter of the same frequency and/or the inter-frequency can be understood as the reselection parameter of the frequency point, and the frequency point in the measurement list is the frequency point of the neighboring cell of the current serving cell of the user terminal 700.
  • the reselection parameters of the same frequency and/or different frequency can also be understood as the reselection parameters of the cells at each frequency point, that is, the reselection parameters of the neighboring cells of the current serving cell of the user terminal. .
  • the reselection parameter included in the measurement list sent by the network server or sent to the user terminal may be a reselection parameter of a frequency point of a neighboring cell of the current serving cell of the user terminal; or may be current with the user terminal.
  • the measurement module 702 is configured to perform signal measurement on the cell supported by the user terminal 700 in the measurement list acquired by the obtaining module 701, and obtain the measurement parameter corresponding to the reselection parameter type corresponding to each cell.
  • the selecting module 703 is configured to select, from the measurement list obtained by the obtaining module 701, the cell in the frequency of the user terminal 700 supporting the frequency point, and select a cell that is better than the reselection parameter to form a target cell set.
  • the camping module 704 is configured to select the first cell to camp from the target cell set selected by the selecting module 703.
  • the specific manner in which the resident module 704 selects the first cell to camp from the target cell set may be:
  • the first cell is randomly selected from the set of target cells and camped on the first cell.
  • FIG. 8 is a schematic structural diagram of another user terminal according to an embodiment of the present invention.
  • the user terminal 700 shown in FIG. 8 is optimized based on the user terminal 700 shown in FIG. 7.
  • the user terminal 700 may further include a detecting module 705 and a determining module 706, where:
  • the detecting module 705 is configured to detect a moving speed of the user terminal 700.
  • the determining module 706 is configured to determine whether the moving speed is less than or equal to a preset moving speed threshold. If yes, the trigger obtaining module 701 performs an operation of acquiring a measurement list from the network server.
  • the user terminal 700 can ignore the measurement list broadcasted or sent by the network server, and perform cell reselection when the signal measurement parameter of the currently camped cell is less than a certain threshold, or when performing cell reselection.
  • the cell with the same frequency as the current camping cell is selected for camping, which can reduce the power consumption of the user terminal 700 due to frequent cell reselection when the moving speed is large.
  • the resident module 704 can include a selection submodule 7041, an acquisition submodule 7042, a determination submodule 7043, and a resident submodule 7044, where:
  • the selecting submodule 7041 is configured to select the first cell from the target cell set selected by the selecting module 703 in a preset order.
  • the obtaining submodule 7042 is configured to acquire a reselection factor of the first cell.
  • the obtaining sub-module 7042 may be: acquiring the reselection factor of the first cell locally from the user terminal 700, or obtaining the reselection factor of the first cell from the network server.
  • the determining sub-module 7043 is configured to generate a random number for the first cell, and determine whether the random number is less than or equal to the reselection factor, and if so, the trigger resident sub-module 7044 resides in the first cell; if not, The trigger selection sub-module 7041 again selects the second cell from the target cell set in a preset order.
  • the value of the random number ranges from 0 to 1.
  • the resident sub-module 7044 is configured to camp on the first cell when the determining sub-module 7043 determines that the random number is less than or equal to the reselection factor of the cell.
  • the obtaining submodule 7042 is further configured to: when the determining submodule 7043 determines that the random number is greater than the reselection factor, the obtaining the selecting submodule 7041 is in the preset order from the target. The number of times the cell is selected in the cell set.
  • the determining sub-module 7043 is further configured to determine whether the selected number of times is less than a preset number of selected control times. If yes, the triggering selection sub-module 7041 selects the second cell from the target cell set again according to a preset order; if not, triggers the resident Sub-module 7044 resides to the operation of the first cell.
  • the measurement list obtained by the user terminal from the network server may further include a reselection factor of each frequency point, and the specific manner of the acquisition submodule 7042 to obtain the reselection factor of the first cell may be:
  • the reselection factor of the frequency point at which the first cell is located is obtained from the measurement list.
  • the obtaining submodule 7041 in the resident module 704 may obtain the reselection factor of the currently selected cell from the adjustment module 708.
  • FIG. 9 is a schematic structural diagram of still another user terminal according to an embodiment of the present invention.
  • the user terminal 700 shown in FIG. 9 is optimized based on the user terminal 700 shown in FIG. 8.
  • the user terminal 700 may further include a configuration module 707 and an adjustment module 708, where:
  • the configuration module 707 is configured to configure an average reselection factor for each cell in the target cell set after the selection module 703 selects a target cell set whose measurement parameter is better than the reselection parameter from the cell supported by the user terminal 700.
  • the average reselection factor is equal to the reciprocal of the number of cells in the target cell set.
  • the obtaining module 701 is further configured to obtain, from the network server, load information of each cell in the target cell set.
  • the selecting module 703 is further configured to select a maximum load cell from the target cell set according to the load information acquired by the obtaining module 701.
  • the adjusting module 708 is configured to reduce an average reselection factor of the maximum load cell, obtain a reselection factor of the maximum load cell, and increase an average reselection factor of the remaining cells of the target cell set except the maximum load cell. , get the reselection factor of the remaining cells.
  • the sum of the reselection factor of the maximum load cell and the reselection factor of the remaining cells is 1.
  • the selecting module 703 is further configured to select the highest priority cell from the target cell set.
  • the adjusting module 708 is further configured to increase an average reselection factor of the highest priority cell, obtain a reselection factor of the highest priority cell, and reduce other cells in the target cell set except the highest priority cell.
  • the average reselection factor gives the reselection factors for the remaining cells.
  • the sum of the reselection factor of the highest priority cell and the reselection factor of the remaining cells is 1.
  • the obtaining submodule 7042 in the resident module 704 may obtain the reselection of the currently selected cell from the adjustment module 708. factor.
  • FIG. 10 is a schematic structural diagram of still another user terminal according to an embodiment of the present invention.
  • the user terminal 700 shown in FIG. 10 is optimized based on the user terminal 700 shown in FIGS. 8 and 9.
  • the user terminal 700 can further include an identification module 709, where:
  • the configuration module 707 is configured to configure an average reselection factor for each cell in the target cell set after the selection module 703 selects a target cell set whose measurement parameter is better than the reselection parameter from all cells in the user terminal 700 support frequency point.
  • the average reselection factor is equal to the reciprocal of the number of cells in the target cell set.
  • the identifying module 709 is configured to identify, from the target cell set selected by the selecting module 703, a target cell that is different from the historical camping cell of the user terminal 700.
  • the frequency of the target cell is different from the frequency of the historical camped cell of the user terminal 700.
  • the frequency of the target cell is different from the frequency of the historical cell of the user terminal 700. It can be understood that the frequency of the target cell is the added frequency of the user terminal 700.
  • the identification module 709 can also identify a new frequency point of the network. If there is a cell under the new frequency point in the target cell set, the adjustment module 708 can also increase the reselection factor of the cell to camp. When the module 704 selects the cell, the success rate of camping on the cell is large, thereby achieving load balancing between the cells to a certain extent.
  • the adjusting module 708 is further configured to increase an average reselection factor of the target cell, obtain a reselection factor of the target cell, and reduce an average reselection factor of the other cells in the target cell set except the target cell, The reselection factors of the remaining cells are obtained.
  • the sum of the reselection factor of the target cell and the reselection factor of the remaining cells is 1.
  • the obtaining submodule 7042 in the resident module 704 can obtain the current status from the adjustment module 708.
  • the reselection factor of the selected cell is the reselection factor of the selected cell.
  • FIG. 11 is a schematic structural diagram of still another user terminal according to an embodiment of the present invention.
  • the user terminal 700 shown in FIG. 11 is optimized based on the user terminal 700 shown in FIGS. 8 , 9 , and 10 .
  • FIG. 11 when the cell load in the target cell set, the relationship with the frequency of the historical camped cell of the user terminal 700, and the cell priority are simultaneously considered:
  • the configuration module 707 is configured to configure an average reselection factor for each cell in the target cell set after the selection module 703 selects a target cell set whose measurement parameter is better than the reselection parameter from all cells in the user terminal support frequency point.
  • the average reselection factor is equal to the reciprocal of the number of cells in the target cell set.
  • the obtaining module 701 is further configured to obtain, from the network server, load information of each cell in the target cell set.
  • the selecting module 703 is further configured to select a maximum load cell from the target cell set according to the load information acquired by the obtaining module 701, and select a highest priority cell from the target cell set.
  • the identifying module 709 is configured to identify, from the target cell set selected by the selecting module 703, a target cell that is different from the historical camping cell of the user terminal.
  • the frequency of the target cell is different from the frequency of the historical camped cell of the user terminal 700.
  • the adjusting module 708 is further configured to reduce an average reselection factor of the maximum load cell, obtain a reselection factor of the maximum load cell, increase an average reselection factor of the target cell, and obtain a reselection factor of the target cell, and increase The average reselection factor of the highest priority cell is obtained, and the reselection factor of the highest priority cell is obtained, and is adjusted according to the reselection factor of the maximum load cell, the reselection factor of the target cell, and the reselection factor of the highest priority cell.
  • the average reselection factor of the remaining cells in the target cell set except the maximum load cell, the target cell, and the highest priority cell, and the reselection factor of the remaining cells is obtained.
  • the sum of the reselection factor of the maximum load cell, the reselection factor of the target cell, the reselection factor of the highest priority cell, and the reselection factor of the remaining cells is still 1.
  • the obtaining submodule 7042 in the resident module 704 may obtain the reselection of the currently selected cell from the adjustment module 708. factor.
  • the user terminal when performing cell reselection, may configure a reselection factor for each cell, and the user terminal is small in the preset order to meet the camping condition.
  • the success rate of each cell being camped by the user terminal is the same as the reselection factor configured for each cell, and the load between the cells is balanced to a certain extent, thereby improving network resource utilization.
  • the user terminal may directly camp on the cell when the number of times the selected cell is selected is equal to the preset number of control times, so that the user terminal cannot be camped on the cell for a long time.
  • the user terminal is able to camp faster to the cell that satisfies the camping condition.
  • the user terminal may randomly camp to the cell that satisfies the camping condition, or camp on the cell according to the reselection factor of each cell, and when the moving speed of the user terminal is large, in order to avoid the cell weight
  • the user terminal may perform cell reselection when the signal measurement parameter of the currently camped cell is less than a certain threshold, or select a cell with the same frequency as the currently camped cell when performing cell reselection, thereby avoiding The cell reselects the ping-pong due to the large moving speed of the user terminal, reducing the power consumption of the user terminal.
  • FIG. 12 is a schematic structural diagram of still another user terminal according to an embodiment of the present invention.
  • the user terminal 120 may include at least one processor 121, such as a CPU, a communication interface 122, a memory 123, and at least one communication bus 124.
  • the memory 123 may be a high speed RAM memory or a nonvolatile memory. (non-volatile memory), such as at least one disk storage. Alternatively, the memory 123 may be at least one storage device located away from the processor 121. among them:
  • Communication bus 124 is used to implement connection communication between these components, such as processor 121, communication interface 122, and memory 123.
  • a set of program codes is stored in the memory 121, and the processor 121 is configured to call the program code stored in the memory 123 for performing the following operations:
  • the measurement list is obtained from the network server through the communication interface 122, where the measurement list includes co-frequency and/or inter-frequency reselection parameters, and the same frequency is the frequency point of the current serving cell of the user terminal 120, and the inter-frequency is the user terminal. 120 frequency points at which the current serving cell is at a different frequency point;
  • the first cell is selected from the target cell set to camp.
  • the specific manner in which the processor 121 selects the first cell to camp from the target cell set may be:
  • the first cell is randomly selected from the set of target cells and camped on the first cell.
  • the specific manner in which the processor 121 selects the first cell to camp from the target cell set may also be:
  • the processor 121 is further configured to invoke the program code stored in the memory 123, and perform the following operations:
  • the second cell is selected from the target cell set in a preset order, and the reselection factor of the second cell is obtained;
  • the first cell is camped on.
  • the reselection factor may be configured by the network server, or may be configured by the user terminal 120, which is not limited in the embodiment of the present invention.
  • the measurement list acquired by the processor 121 from the network server through the communication interface 122 may further include a reselection factor of the same frequency and/or different frequency. Therefore, the processor 121
  • the specific manner of obtaining the reselection factor of the first cell may be:
  • the reselection factor of the frequency point at which the first cell is located is obtained from the measurement list.
  • the processor 121 when considering the cell load in the target cell set, is further configured to call the memory before selecting the first cell from the target cell set and acquiring the reselection factor of the first cell.
  • the program code stored in 123 do the following:
  • the processor 121 selects the first cell from the target cell set in a preset order. And acquiring the program code stored in the memory 123 before acquiring the reselection factor of the first cell, and performing the following operations:
  • the average reselection factor of the remaining cells of the target cell set except the target cell is reduced, and the reselection factor of the remaining cells is obtained, wherein the sum of the reselection factor of the target cell and the reselection factor of the remaining cells is 1.
  • the frequency of the target cell is different from the frequency of the historical camped cell of the user terminal 120. It can be understood that the frequency of the target cell is the added frequency of the user terminal 120.
  • the processor 121 may also identify a new frequency point of the network. If a cell in the target cell set has a new frequency point, the processor 121 may also increase the reselection factor of the cell, so that the processor When the cell is selected, the success rate of camping on the cell is large, so that load balancing between cells is achieved to a certain extent.
  • the processor 121 selects the first cell from the target cell set in a preset order, and acquires the first cell. Before the reselection factor, it is also used to call the program code stored in the memory 123, and performs the following operations:
  • the processor 121 when considering the cell load in the target cell set, the relationship between the cell frequency point and the historical resident cell frequency of the user terminal 120, and the cell priority, the processor 121 is in a preset order. Before the first cell is selected in the target cell set, and the reselection factor of the first cell is obtained, the program code stored in the memory 123 is also used to perform the following operations:
  • the reselection factor obtains a reselection factor of the remaining cells, wherein the reselection factor of the maximum load cell, the reselection factor of the target cell, and the reselection factor of the highest priority cell and the reselection factor of the remaining cells are 1.
  • the processor 121 is further configured to call the process stored in the memory 123.
  • Order code do the following:
  • the user terminal 120 may ignore the measurement list broadcasted or sent by the network server, and perform cell reselection when the signal measurement parameter of the currently camped cell is less than a certain threshold, or select and current when performing cell reselection.
  • the cell with the same frequency point of the camping cell camps, which can reduce the power consumption of the user terminal 120 due to frequent cell reselection when the moving speed is large.
  • the user terminal when performing cell reselection, may configure a reselection factor for each cell, and the user terminal selects a cell in the target cell set that satisfies the camping condition according to a preset sequence.
  • the success rate of each cell being camped by the user terminal is the same as the reselection factor configured for each cell, the load between the cells is balanced to a certain extent, and the network resource utilization rate is improved.
  • the user terminal may directly camp on the cell when the number of times the selected cell is selected is equal to the preset number of control times, so that the user terminal cannot be camped on the cell for a long time.
  • the user terminal is able to camp faster to the cell that satisfies the camping condition.
  • the user terminal may randomly camp to the cell that satisfies the camping condition, or camp on the cell according to the reselection factor of each cell, and when the moving speed of the user terminal is large, in order to avoid the cell weight
  • the user terminal may perform cell reselection when the signal measurement parameter of the currently camped cell is less than a certain threshold, or select a cell with the same frequency as the currently camped cell when performing cell reselection, thereby avoiding The cell reselects the ping-pong due to the large moving speed of the user terminal, reducing the power consumption of the user terminal.
  • FIG. 13 is a schematic structural diagram of still another user terminal according to an embodiment of the present invention.
  • the user terminal 130 may include a receiver 131, at least one processor 132, such as a CPU, and at least one Bus 133, where:
  • the bus 133 may be a communication bus for implementing a communication connection between the receiver 131 and the processor 132, which is not limited in the embodiment of the present invention.
  • the receiver 131 is configured to receive a measurement list from the network server, where the measurement list includes co-frequency and/or inter-frequency reselection parameters, where the same frequency is the frequency point of the current serving cell of the user terminal 130, and the inter-frequency is the same as the user.
  • the frequency point at which the terminal 130 is currently at the frequency of the serving cell is different.
  • the processor 132 is configured to perform signal measurement on the cell in the measurement list of the user terminal 130 in the measurement list, and obtain the measurement parameter corresponding to the reselection parameter type corresponding to each cell; and support the cell in the frequency point from the user terminal 130. And selecting a cell whose measurement parameter is better than the reselection parameter to form a target cell set; and selecting a first cell from the target cell set to camp.
  • the specific manner in which the processor 132 selects the first cell to camp from the target cell set may be:
  • the first cell is randomly selected from the set of target cells and camped on the first cell.
  • the specific manner in which the processor 132 selects the first cell to camp from the target cell set may be:
  • processor 132 may also be configured to perform the following operations:
  • the second cell is selected from the target cell set in a preset order, and the reselection factor of the second cell is obtained;
  • the first cell is camped on.
  • the reselection factor may be configured by the network server, or may be configured by the user terminal 130, which is not limited in the embodiment of the present invention.
  • the measurement list received by the receiver 131 from the network server may further include a reselection factor of the same frequency and/or different frequency, and therefore, the processor 132 acquires the first
  • the specific manner of the cell reselection factor can be:
  • the reselection factor of the frequency point at which the first cell is located is obtained from the measurement list.
  • the processor 132 when considering the cell load in the target cell set, may also be configured to perform before selecting the first cell from the target cell set and acquiring the reselection factor of the first cell. The following operations:
  • the specific manner in which the processor 132 obtains the load information of each cell in the target cell set from the network server may be: the processor 132 controls the receiver 131 to receive the load information of each cell in the target cell set from the network server.
  • the processor 132 when considering the relationship between the cell frequency point in the target cell set and the historical camp cell frequency of the user terminal 130, the processor 132 selects the first cell from the target cell set in a preset order. Before obtaining the reselection factor of the first cell, the following operations may also be performed:
  • the average reselection factor of the remaining cells of the target cell set except the target cell is reduced, and the reselection factor of the remaining cells is obtained, wherein the sum of the reselection factor of the target cell and the reselection factor of the remaining cells is 1.
  • the frequency of the target cell is different from the frequency of the historical camped cell of the user terminal 130. It can be understood that the frequency of the target cell is the added frequency of the user terminal 130.
  • the processor 132 may also identify a new frequency point of the network. If a cell in the target cell set has a new frequency point, the processor 132 may also increase the reselection factor of the cell, so that the processor When the cell is selected, the success rate of camping on the cell is large, so that load balancing between cells is achieved to some extent.
  • the processor 132 when considering the priority of the cell in the target cell set, the processor 132 selects the first cell from the target cell set in a preset order, and obtains the reselection factor of the first cell, It can also be used to do the following:
  • the processor 132 when considering the cell load in the target cell set, the relationship between the cell frequency point and the historical resident cell frequency of the user terminal 130, and the cell priority, the processor 132 is in the preset order from the target. Before the first cell is selected in the cell set, and the reselection factor of the first cell is obtained, the following operations may also be performed:
  • the reselection factor obtains a reselection factor of the remaining cells, wherein the reselection factor of the maximum load cell, the reselection factor of the target cell, and the reselection factor of the highest priority cell and the reselection factor of the remaining cells are 1.
  • the processor 132 can also be configured to perform the following operations:
  • the trigger receiver 131 When the moving speed is less than or equal to the preset moving speed threshold, the trigger receiver 131 performs an operation of receiving a measurement list from the network server.
  • the user terminal when performing cell reselection, may configure a reselection factor for each cell, and the user terminal selects a cell in the target cell set that satisfies the camping condition according to a preset sequence.
  • the success rate of each cell being camped by the user terminal is the same as the reselection factor configured for each cell, the load between the cells is balanced to a certain extent, and the network resource utilization rate is improved.
  • the user terminal may directly camp on the cell when the number of times the selected cell is selected is equal to the preset number of control times, so that the user terminal cannot be camped on the cell for a long time.
  • the user terminal is able to camp faster to the cell that satisfies the camping condition.
  • the user terminal may randomly camp to the cell that satisfies the camping condition, or camp on the cell according to the reselection factor of each cell, and when the moving speed of the user terminal is large, in order to avoid the cell weight
  • the user terminal may perform cell reselection when the signal measurement parameter of the currently camped cell is less than a certain threshold, or select a cell with the same frequency as the currently camped cell when performing cell reselection, thereby avoiding The cell reselects the ping-pong due to the large moving speed of the user terminal, reducing the power consumption of the user terminal.
  • the modules in the user terminal in the embodiment of the present invention may be combined, divided, and deleted according to actual needs.
  • the module in the embodiment of the present invention may be implemented by a general-purpose integrated circuit, such as a CPU (Central Processing Unit) or an ASIC (Application Specific Integrated Circuit).
  • a general-purpose integrated circuit such as a CPU (Central Processing Unit) or an ASIC (Application Specific Integrated Circuit).
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Abstract

L'invention concerne un procédé de resélection de cellule et un équipement utilisateur. Le procédé comprend: un équipement utilisateur qui acquiert d'un serveur de réseau une liste de mesures comprenant des paramètres de resélection de fréquences identiques et/ou différentes, effectue une mesure de signal sur des cellules sous des points de fréquence pris en charge par l'équipement utilisateur afin d'obtenir des paramètres de mesure correspondant à chaque cellule et identiques aux types des paramètres de resélection, et sélectionne les cellules dont les paramètres de mesure sont meilleurs que les paramètres de resélection dans des cellules sous les points de fréquence pris en charge par l'équipement utilisateur pour former un ensemble de cellules cibles, ce qui permet de sélectionner une première cellule dans l'ensemble de cellules cibles en vue d'une rétention. Par la mise en oeuvre de modes de réalisation de la présente invention, l'équipement utilisateur peut effectuer une mesure de signal sur des cellules sous des points de fréquence établis dans une liste de mesures, et sélectionner une cellule pour la rétention dans un ensemble de cellules cibles satisfaisant à des conditions de rétention de façon à empêcher la rétention d'une quantité relativement importante d'équipements utilisateurs dans une cellule à priorité plus élevée, ce qui permet de réduire les charges de la cellule à priorité plus élevée jusqu'à un certain point, et d'améliorer l'équilibre de charge entre les cellules, ainsi que le taux d'utilisation des ressources du réseau.
PCT/CN2015/091768 2015-10-12 2015-10-12 Procédé de resélection de cellule et équipement utilisateur WO2017063125A1 (fr)

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