WO2018082674A1 - 一种小区重选方法及装置 - Google Patents

一种小区重选方法及装置 Download PDF

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Publication number
WO2018082674A1
WO2018082674A1 PCT/CN2017/109387 CN2017109387W WO2018082674A1 WO 2018082674 A1 WO2018082674 A1 WO 2018082674A1 CN 2017109387 W CN2017109387 W CN 2017109387W WO 2018082674 A1 WO2018082674 A1 WO 2018082674A1
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WIPO (PCT)
Prior art keywords
cell
cells
evolved
signal measurement
terminal
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PCT/CN2017/109387
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English (en)
French (fr)
Inventor
王瑞
戴明增
Original Assignee
华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP21160674.4A priority Critical patent/EP3897039B1/en
Priority to EP17867878.5A priority patent/EP3528543B1/en
Publication of WO2018082674A1 publication Critical patent/WO2018082674A1/zh
Priority to US16/403,067 priority patent/US10728809B2/en
Priority to US16/793,752 priority patent/US11082899B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00837—Determination of triggering parameters for hand-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00835—Determination of neighbour cell lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H04W36/0088—Scheduling hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/04—Reselecting a cell layer in multi-layered cells
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00835—Determination of neighbour cell lists
    • H04W36/008357—Determination of target cell based on access point [AP] properties, e.g. AP service capabilities

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a cell reselection method and apparatus.
  • the access network devices in the LTE access the evolved packet core network (EPC) through the S1 interface, and at the same time, the access network device They are connected to each other through an X2 interface for information interaction.
  • the LTE system can be evolved into an eLTE (Evolved LTE) system, so that the eLTE access network device has the function of accessing the 5G core network.
  • the 5G core network supporting the new function is also called the Next-Generation Core (NG-Core).
  • NG-Core Next-Generation Core
  • the eLTE system still adopts the LTE mode to provide services for the terminal.
  • the access network device in eLTE and the access network device in LTE use the same frequency point, and the air interface technology, especially the physical layer technology. the same.
  • the terminal accesses the evolved long-term evolution cell.
  • the embodiment of the present application provides a cell reselection method and device, which are used to implement a terminal access evolved long-term evolved cell.
  • An embodiment of the present application provides a cell reselection method, including:
  • the terminal measures the reference signals of the X neighboring cells working at the target frequency point, and obtains X signal measurement values
  • the terminal Determining, by the terminal, that the signal measurement value of the N cells in the X neighboring cells meets the cell reselection condition, and determining that at least one evolved long term evolution cell exists in the N cells, the at least one The cell with the largest signal measurement value in the evolved long term evolution cell is used as the reselected cell.
  • the terminal after the terminal performs measurement on the target frequency point, the N signal measurement values are obtained, and after determining that the signal measurement values of the N cells in the X neighboring cells satisfy the cell reselection condition, And determining, when the at least one evolved long term evolution cell exists in the N cells, a cell with the largest signal measurement value in the at least one evolved long term evolution cell as the reselected cell.
  • the terminal can implement an evolved long-term evolution cell with the largest access signal measurement value, thereby improving the signal quality of the terminal.
  • the method further includes:
  • the terminal measures the reference signals of the X neighboring cells working at the target frequency point to obtain X. After the signal measurement:
  • the terminal measures a reference signal of the currently camped cell, and obtains a signal measurement value of the currently camped cell;
  • the terminal determines that the signal measurement values of the N neighboring cells and the N cells in the current camping cell satisfy the cell reselection And determining, according to the signal measurement values of the N cells, the N cells, and determining that at least one evolved long term evolution cell exists in the N cells, where the at least one evolved long term evolution cell is The most ranked cell is the reselected cell.
  • the method further includes:
  • the terminal determines that there is no evolved long-term evolved cell in the N cells, the cell with the largest signal measurement value among the N cells is used as the reselected cell.
  • the method further includes:
  • the terminal determines that there is no evolved long-term evolved cell in the N cells, there are evolved in the M cells for M cells operating at frequencies other than the target frequency point.
  • the cell is a long-term evolved cell, the cell in which the signal measurement value of the evolved long-term evolved cell of the M cells is higher than the preset threshold, and the frequency of the working frequency is the highest, and the signal measurement value is the largest is used as the reselected cell.
  • the method further includes:
  • the terminal determines that there are no evolved long-term evolved cells whose signal measurement values are higher than a preset threshold in the N cells, the M cells that are working on a frequency point other than the target frequency point are When there is no evolved long-term evolved cell whose signal measurement value is higher than the preset threshold in the M cells, the cell in which the signal measurement value is higher than the preset threshold and the signal measurement value is the largest is used as the reselection. Community.
  • the method before the determining, by the terminal, that the at least one evolved long-term evolved cell exists in the N cells, the method further includes:
  • the terminal receives the first cell type indication information that is sent by the currently camped cell, or the terminal receives the first cell type indication information that is sent by the neighboring cell;
  • a cell type indication information indicates that the cell is an evolved long term evolution cell;
  • the terminal determines, according to the first cell type indication information, whether the cell is an evolved long term evolution cell.
  • the method before the determining, by the terminal, that the at least one evolved long-term evolved cell exists in the N cells, the method further includes:
  • the terminal receives the second cell type indication information that is sent by the currently camped cell, and the second cell type indication information indicates that the neighboring cell of the cell currently camped by the terminal is an evolved long term evolution cell.
  • the method before the measuring, by the terminal, the reference signals of the X neighboring cells working on the target frequency point, the method further includes:
  • the terminal receives a notification message sent by the access network device, where the notification message indicates that there is an evolved long term evolution cell on the target frequency point.
  • the method further includes:
  • the terminal determines that the currently camped cell is not an evolved long term evolution cell.
  • An embodiment of the present application provides a cell reselection apparatus, including:
  • a transceiver unit configured to measure a reference signal of X neighboring cells working at a target frequency point, and obtain X signal measurement values
  • a processing unit configured to determine that a signal measurement value of the N cells in the X neighboring cells meets a cell reselection condition, and when determining that at least one evolved long term evolution cell exists in the N cells, The cell with the largest signal measurement value in at least one evolved long term evolution cell is used as the reselected cell.
  • processing unit is further configured to:
  • the cell reselection priority of the target frequency point is the same as the cell reselection priority of the current camping cell's working frequency point.
  • the reference signals of the X neighboring cells working at the target frequency point are measured, and after X signal measurement values are obtained:
  • the cell reselection condition Determining that the signal measurement values of the N neighboring cells and the N cells in the current camping cell satisfy the cell reselection condition, and sorting the N cells according to the signal measurement values of the N cells, and determining the When there is at least one evolved long term evolution cell in the N cells, the most ranked cell in the at least one evolved long term evolution cell is used as the reselected cell.
  • processing unit is further configured to:
  • the cell with the largest signal measurement value among the N cells is used as the reselected cell.
  • processing unit is further configured to:
  • the evolved long-term evolved cell exists in the M cells for M cells operating at a frequency point other than the target frequency point
  • the cell in which the signal measurement value of the evolved long-term evolution cell of the M cells is higher than a preset threshold, and the frequency of the working frequency is the highest, and the signal measurement value is the largest is used as the reselected cell.
  • processing unit is further configured to:
  • the cells in the M cells whose signal measurement value is higher than the preset threshold and whose signal measurement value is the largest are used as the reselected cell.
  • the transceiver unit is further configured to:
  • first cell type indication information sent by the currently camped cell or receiving, by the terminal, first cell type indication information sent by the neighboring cell, where the first cell type is sent
  • the indication information indicates that the cell is an evolved long term evolution cell
  • the transceiver unit is further configured to:
  • the transceiver unit is further configured to:
  • the transceiver unit is further configured to:
  • a terminal comprising:
  • a transceiver for measuring a reference signal of X neighboring cells operating at a target frequency point to obtain X signal measurement values
  • a processor configured to determine that a signal measurement value of the N cells in the X neighboring cells meets a cell reselection condition, and when determining that at least one evolved long term evolution cell exists in the N cells, The cell with the largest signal measurement value in at least one evolved long term evolution cell is used as the reselected cell.
  • the processor is further configured to:
  • the cell reselection priority of the target frequency point is the same as the cell reselection priority of the current camping cell's working frequency point.
  • the reference signals of the X neighboring cells working at the target frequency point are measured, and after X signal measurement values are obtained:
  • the cell reselection condition Determining that the signal measurement values of the N neighboring cells and the N cells in the current camping cell satisfy the cell reselection condition, and sorting the N cells according to the signal measurement values of the N cells, and determining the When there is at least one evolved long term evolution cell in the N cells, the most ranked cell in the at least one evolved long term evolution cell is used as the reselected cell.
  • the processor is further configured to:
  • the cell with the largest signal measurement value among the N cells is used as the reselected cell.
  • the processor is further configured to:
  • the evolved long-term evolved cell exists in the M cells for M cells operating at a frequency point other than the target frequency point
  • the cell in which the signal measurement value of the evolved long-term evolution cell of the M cells is higher than a preset threshold, and the frequency of the working frequency is the highest, and the signal measurement value is the largest is used as the reselected cell.
  • the processor is further configured to:
  • the cells in the M cells whose signal measurement value is higher than the preset threshold and whose signal measurement value is the largest are used as the reselected cell.
  • the transceiver is further configured to:
  • first cell type indication information sent by the currently camped cell or receiving, by the terminal, first cell type indication information sent by the neighboring cell, where the first cell type is sent
  • the indication information indicates that the cell is an evolved long term evolution cell
  • the transceiver is further configured to:
  • the transceiver is further configured to:
  • the transceiver is further configured to:
  • FIG. 1 is a schematic diagram of a network architecture applicable to an embodiment of the present application
  • FIG. 2 is a schematic diagram of a scenario applicable to an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a cell reselection method according to an embodiment of the present disclosure
  • FIG. 4 is a schematic flowchart of a communication method according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a cell reselection apparatus according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • Wideband Code Division Multiple Access Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • Universal Mobile Other mobile communication systems such as the Universal Mobile Telecommunication System (UMTS), the evolved Long Term Evolution (eLTE) system, and 5G.
  • UMTS Universal Mobile Telecommunication System
  • eLTE evolved Long Term Evolution
  • a terminal also called a User Equipment (UE) is a device that provides voice and/or data connectivity to a user, for example, a handheld device with a wireless connection function, an in-vehicle device, and the like.
  • UE User Equipment
  • Common terminals include, for example, mobile phones, tablets, notebook computers, PDAs, mobile internet devices (MIDs), wearable devices such as smart watches, smart bracelets, pedometers, and the like.
  • MIDs mobile internet devices
  • wearable devices such as smart watches, smart bracelets, pedometers, and the like.
  • the access network device which may be a common base station (such as a NodeB or an eNB), may be a new radio controller (NR controller), may be a centralized network element (Centralized Unit), may be new
  • the radio base station may be a radio remote module, which may be a micro base station, may be a relay, may be a distributed network element, or may be a reception point (TRP) or a transmission point (Transmission).
  • Point, TP may be a DU and a TP/TRP, or any other wireless access device, but the embodiment of the present application is not limited thereto.
  • FIG. 1 it is a schematic diagram of a network architecture applicable to an embodiment of the present application.
  • the Evolved Packet Core (EPC) network coexists with the next-generation core network, where the LTE base station is connected to the EPC.
  • an LTE base station that can access the EPC and the next-generation core network is referred to as an eLTE base station.
  • the eLTE base station can be connected to the EPC and the next-generation core network, and the next-generation wireless access
  • the base station gNB of the New Radio Access Network (NR) can be connected to the next generation core network.
  • NR New Radio Access Network
  • the terminal can connect to the EPC or the next generation core network through the base station as needed.
  • FIG. 2 it is a schematic diagram of a scenario applicable to an embodiment of the present application.
  • the LTE base station is connected to the EPC
  • the eLTE base station is connected to the EPC and the next-generation core network.
  • the terminal is located in an area where the LTE base station and the eLTE base station overlap, and the terminal can access the EPC or the next-generation core network through the eLTE base station, or through the LTE.
  • the base station accesses the EPC.
  • FIG. 3 a schematic flowchart of a cell reselection method according to an embodiment of the present application is provided.
  • the method includes:
  • Step 301 The terminal measures the reference signals of the X neighboring cells working at the target frequency point, and obtains X signal measurement values.
  • Step 302 The terminal determines that the signal measurement values of the N cells in the X neighboring cells satisfy the cell reselection condition, and when determining that at least one evolved long term evolution cell exists in the N cells, A cell with the largest signal measurement value in at least one evolved long term evolution cell is used as a reselected cell.
  • the terminal may convert the signal measurement value of the at least one evolved long term evolution cell into a ranking of each neighboring cell by using a preset algorithm, so as to sequence the at least one evolved long term evolution cell, for example,
  • the terminal may calculate each evolved long term evolution cell R (Rank, order) value according to the signal measurement value of each evolved long term evolution cell, so as to determine the order of each evolved long term evolution cell according to the R value.
  • R Rank, order
  • the evolved long-term eLTE cell can use the same frequency point as the LTE cell and adopt the same air interface transmission technology, and can be connected to the EPC or connected to the next-generation core network, for example, 5G. Core Network.
  • the next generation core network in the embodiment of the present application refers to a core network of a 5G network.
  • the terminal may be in a shutdown state, and after the terminal is powered on, a cell camp needs to be selected. If the terminal is a terminal that can access the EPC or the next-generation core network, the terminal can preferentially access the next-generation core network after the device is powered on, and the terminal needs to preferentially select the evolved long-term evolved cell to camp.
  • the terminal selects a Public Land Mobile Network (PLMN) and a frequency point, and searches for a suitable cell at the selected frequency point. If the cell type indication information indicating the cell type is not broadcasted in the cell, the terminal may perform cell selection according to the method in the existing manner, and details are not described herein; if the cell type indication information indicating the cell type is broadcast in the cell, After the terminal scans the cell at the selected frequency point, the terminal determines that the reference signal of the cell satisfies the cell reselection condition by using the measurement reference signal, and determines that the cell is an evolved long-term evolved cell by reading the system information of the cell. At this time, the terminal can choose to access the cell. If an evolved long-term evolved cell that can satisfy the cell selection criterion cannot be found, the LTE cell that can be accessed is found according to the existing mechanism.
  • PLMN Public Land Mobile Network
  • the cell reselection condition may be a cell reselection condition in the 4G network system, and details are not described herein again.
  • the terminal may also select cell access at the time of power-on by other means, and details are not described herein again.
  • step 301 in a possible implementation manner, after the terminal camps on the cell, the terminal may start if it determines that the frequency of the working frequency is higher than the frequency of the reselection priority of the frequency of the cell currently camped by the terminal. Measurement, cell reselection.
  • Step 1 The terminal selects a target frequency point, and the target frequency point is a frequency point higher than a reselection priority of a frequency point of the cell in which the terminal currently camps.
  • Step 2 The terminal measures the neighboring area on the target frequency point.
  • the step includes: determining, by the terminal, that the target frequency point is an LTE frequency point, reading the neighboring area type indication information in the current camped cell system information, and determining whether an evolved long term evolution cell exists in the neighboring area. If the frequency point is not the LTE frequency point, it is directly determined that there is no evolved long term evolution cell at the frequency point.
  • Step 3 Determine, according to the measurement result, whether the measured cell satisfies the cell reselection condition. N cells that satisfy the cell reselection condition are obtained. There are two possible situations for this step:
  • Case 1 If there is an evolved long-term evolved cell in the N cells, the evolved long-term evolved cell with the best signal quality is selected as the reselection among the N neighboring cells satisfying the cell reselection condition in the target frequency point. Community.
  • Case 2 If there is no evolved long-term evolved cell in the N cells, the cell with the best signal quality is selected as the cell to be reselected, or the frequency is prioritized from high to low to continue scanning at other frequency points until found.
  • the optional evolved long term evolution cell is used as the reselected cell. If the optional evolved long term evolution cell is not found, the reselection priority of the selected frequency is selected in the scanned cell that satisfies the cell reselection condition. The highest cell is used as the reselected cell.
  • the terminal determines that the frequency of the working frequency is the same as the reselection priority of the frequency of the cell in which the terminal currently camps, and then starts the measurement and performs the cell weight. selected.
  • Step 1 The terminal selects a target frequency point, and the target frequency point is a frequency point having the same reselection priority as the frequency point of the cell in which the terminal currently camps.
  • Step 2 The terminal measures the X neighboring cells on the target frequency point, and obtains X signal measurement values.
  • Step 3 Calculate the signal measurement value of each neighboring cell and the currently camped cell for the cell signal quality measurement result, and determine whether the X neighboring cells and the cell currently camped by the terminal meet the cell reselection condition.
  • the cell if present, can obtain N cells that satisfy the cell reselection condition. Then, the N cells are sorted according to the signal measurement values of the N cells, and the cells that meet the cell reselection condition are selected based on the ranking result.
  • the value of the R value of each neighboring cell and the current camping cell may be determined according to the signal measurement value, and then the foregoing cell is sorted according to the R value. There are two possible situations for this step:
  • Case 1 If an evolved long-term evolved cell exists in the above-mentioned N cells, the evolved long-term evolved cell with the highest ranking is selected as the reselected cell among the cells in the target frequency point, for example, the R value may be selected to be the highest.
  • the evolved long term evolution cell serves as a reselected cell.
  • Case 2 If there is no evolved long-term evolved cell in the above N cells, the cell with the highest ranking is selected as the cell to be reselected, or the frequency is prioritized from high to low to continue scanning at other frequency points until found.
  • the optional evolved long term evolution cell is used as the reselected cell. If the optional evolved long term evolution cell is not found, the cell with the highest priority of reselection of the working frequency is selected as the reselected cell.
  • the terminal determines that there is a cell whose working frequency is lower than the reselection priority of the frequency of the cell currently camped by the terminal, starts measurement, and performs cell reselection.
  • Step 1 The terminal selects a target frequency point, and the target frequency point is a frequency point lower than a reselection priority of a frequency point of the cell in which the terminal currently camps.
  • Step 2 The terminal measures the neighboring area on the target frequency point.
  • the step includes: determining, by the terminal, that the target frequency point is an LTE frequency point, reading the neighboring area type indication information in the current camped cell system information, and determining whether an evolved long term evolution cell exists in the neighboring area. If the frequency point is not the LTE frequency point, it is directly determined that there is no evolved long term evolution cell at the frequency point.
  • Step 3 Determine, according to the measurement result, whether the measured cell satisfies the cell reselection condition. If there are N cells that satisfy the cell reselection condition. There are two possible situations for this step:
  • Case 1 If there is an evolved long-term evolved cell in the N cells, the evolved long-term evolved cell with the best signal quality is selected as the reselection among the N neighboring cells satisfying the cell reselection condition in the target frequency point. Community.
  • the terminal may determine whether the measurement trigger condition is met, and if it is determined that the measurement trigger condition is met, the measurement is performed.
  • the measurement trigger condition may include one or more of the following:
  • the terminal receives the notification message sent by the access network device, where the notification message indicates that the evolved long-term evolved cell exists on the target frequency point; the notification message may be broadcasted by the access network device, or may be an access network device.
  • the notification message may be broadcasted by the access network device, or may be an access network device.
  • the terminal determines that the terminal does not reside in an evolved long term evolution cell
  • the terminal determines that the signal quality of the currently camped cell is less than a threshold
  • the terminal receives the measurement indication information sent by the access network device, and is used to instruct the terminal to perform measurement.
  • the terminal may further determine that the cell currently camped by the terminal satisfies the following condition: the terminal determines that the currently camped cell is an LTE cell, and a neighboring cell of the currently camped cell There is a frequency reselection priority that works with the currently camped cell or is heavier than the frequency of the currently camped cell. An evolved long-term evolution cell with a low priority is selected.
  • the terminal may determine, according to the received cell type indication information, whether the cell in which the terminal resides or the neighboring cell of the cell where the terminal resides is an evolved long-term evolved cell or an LTE cell, which is described in detail below:
  • the first implementation manner is as follows: the access network device sends the local long-term evolved cell type indication information of the local cell, indicating that the cell is an LTE cell or an evolved long-term evolved cell.
  • the second implementation manner is as follows: the access network device sends the cell type indication information corresponding to the neighboring cell of the cell where the terminal resides to the terminal, and indicates that the neighboring cell of the cell where the terminal resides is an LTE cell or an evolved long-term evolved cell.
  • the terminal may further receive the first cell type indication information that is sent by the currently camped cell, where the first cell type indication information indicates that the cell currently camped by the terminal is LTE cell or evolved long term evolution cell.
  • the terminal receives the first cell type indication information sent by the neighboring cell for any one of the N neighboring cells; or the terminal receives the second cell type indication information sent by the camping cell.
  • the first cell type indication information indicates that the terminal is an LTE cell or an evolved long term evolution cell; and the second cell type indication information indicates that the neighboring cell of the terminal camped cell is an LTE cell or an evolved long term evolution cell.
  • the base station may send the first type of cell indication information to the terminal by using a broadcast manner.
  • the base station may send the second type of cell indication information to the terminal by using a broadcast mode, or send the second type of cell indication information to the terminal by using terminal specific signaling.
  • step 302 the terminal sorts the N cells according to the N signal measurement values. According to the ranking result and whether there are evolved long-term evolution cells in the N cells, the following situations may exist:
  • the first case is: when the terminal determines that the evolved long-term evolved cell in which the at least one signal measurement value is higher than the preset threshold in the N cells, the highest or highest ranked cell in the at least one evolved long-term evolved cell As a reselected cell.
  • the second case the terminal determines that there is no evolved long-term evolved cell whose signal measurement value is higher than the preset threshold in the N cells, and the signal measurement value in the N cells is higher than a preset threshold, and the signal is measured.
  • the cell with the largest value or the highest order is used as the cell for reselection.
  • the terminal determines that there are no evolved long-term evolved cells in which the signal measurement value is higher than the preset threshold, and the M cells that work on the frequency points except the target frequency point
  • the measured value of the signal in the evolved long-term evolved cell of the M cells is higher than a preset threshold, and the frequency of the working frequency has the highest priority, and the signal is The cell with the largest measured value or the highest order is used as the cell for reselection.
  • the terminal determines that there are no evolved long-term evolved cells in which the signal measurement value is higher than the preset threshold, and the M cells that work on the frequency points except the target frequency point
  • the terminal determines that there are no evolved long-term evolved cells in which the signal measurement value is higher than the preset threshold, and the M cells that work on the frequency points except the target frequency point
  • the cell in which the signal measurement value in the M cells is higher than the preset threshold and the signal measurement value is the largest is used as the cell. Reselected cell.
  • the base station in order to enable the terminal to distinguish the type of the cell, the base station sends the cell type indication information to the terminal, so as to indicate whether the cell corresponding to the cell type indication information is an LTE cell or an evolved long-term evolved cell.
  • the base station may send capability information to each other, and the capability information indicates a network function supported by the base station, which is described in detail below.
  • FIG. 4 is a schematic flowchart diagram of a communication method according to an embodiment of the present application.
  • the method includes:
  • Step 401 The first access network device receives the first capability information sent by the second access network device, where the first capability information indicates a network function supported by the second access network device.
  • the first access network device and the second access network device can communicate with each other through an interface such as an X2 interface.
  • Step 402 The first access network device determines, according to the first capability information, a mobility management parameter of a terminal that resides in a cell of the first access network device.
  • the mobility management parameter may include parameters such as a dedicated frequency priority of the cell reselection.
  • the capability information may indicate that the access network device supports one or more of the following functions:
  • the access network device is an eLTE type access network device
  • the type of network slice supported by the access network device is the type of network slice supported by the access network device
  • the third state may refer to a mode such as an economic mode or an inactive mode.
  • the first access network device may add the “first capability information” of the second access network device to the neighbor list maintained by itself.
  • the first access network device may also send second capability information to the second access network device, where the second capability information indicates a network function supported by the first access network device.
  • the first access network device may further send the cell type indication information to the terminal, where the cell type indication information indicates that the cell corresponding to the cell type indication information is an LTE cell or an evolved long term evolution cell.
  • the first access network device sends the first cell type indication information to the terminal, indicating the cell LTE cell or the evolved long term evolution cell.
  • the first access network device sends the second cell type indication information to the terminal, indicating that the neighboring cell of the cell where the terminal resides is an LTE cell or an evolved long term evolution cell.
  • the first access network device may further receive an access class barred (ACB) list sent by the core network device, and a core network type identifier corresponding to the ACB list.
  • the core network type identifier indicates a core network corresponding to the ACB list.
  • the ACB list includes at least one access class (AC).
  • the network side can perform access control by setting different access probabilities for different ACs. For example, if the first access network device accesses the first core network and the second core network at the same time, the first ACB list and the first core network type identifier, the second ACB list, and the second core network type may be received.
  • the identifier where the first core network type identifier indicates that the first ACB list corresponds to the first core network, and the second core network type identifier indicates that the second ACB list corresponds to the second core network.
  • the first core network may be an EPC
  • the second core network may be a next-generation core network; of course, the first core network may be a next-generation core network, and the second core network may be an EPC.
  • the core network corresponding to each ACB list in the multiple ACB lists is indicated to the terminal by using the core network type identifier, so that access control of each terminal is performed in different core networks, and access of each core network is performed.
  • the control does not affect each other, so that each core network can judge whether to allow terminal access according to its own load and the like. For example, after the terminal reads the system information of the cell, and obtains an ACB list that determines whether the cell is "barred", it is necessary to distinguish the core network corresponding to the ACB list.
  • the terminal determines that the cell is forbidden to access according to the ACB list, the terminal cannot initiate the process of accessing the core network, such as attaching to the EPC, but the terminal does not affect the terminal direction. Access to the next generation core network and vice versa.
  • the first access network device determines, according to the first capability information, that the second access network device is an eLTE type access.
  • the network device increases the priority of the frequency used by the second access network device in the dedicated frequency priority, so that the terminal increases the terminal reselection to the second access network when the cell is reselected. Probability in the cell of the device.
  • the first access network device may further select a target cell for handover according to the first capability information of the second access network device.
  • the target cell capable of supporting the service type may be matched according to the service type of the terminal.
  • the terminal device uses the network slice in the source cell, and the source cell selects the neighboring cell that supports the network slice as the target cell of the terminal handover.
  • the target cell When the terminal moves between the cells, if the target cell moves from the source cell to the target cell, the target cell needs to obtain the context information of the terminal after the terminal accesses the target cell.
  • the terminal after the terminal moves from the source cell to the target cell, the terminal sends a message to the target cell, and carries the source cell information, where the source cell information is used to assist the target cell to find the source cell.
  • the target cell sends a request message to the source cell for requesting to acquire context information of the terminal.
  • the source cell receives the request, and sends the context information corresponding to the core network and the context identifier corresponding to each context information to the target cell; each context identifier indicates a context corresponding to the context identifier.
  • the core network corresponding to the information.
  • each context information has a corresponding context identifier, so that the core network corresponding to each context information is indicated to the target cell, so that the target cell can determine the core network corresponding to each context information, thereby avoiding context information.
  • the NR base station may have two deployment modes, including an NSA type NR base station and an SA type NR base station.
  • the NR base station of the NSA type is a base station deployment mode. In this deployment mode, the NR base station needs to be connected to an LTE base station or an eLTE base station, and the LTE base station or the eLTE base station serves as a control plane anchor point of the NR base station, and is connected to the EPC or the next generation core network.
  • the SA type NR base station is another base station deployment mode.
  • the NR base station establishes a signaling plane connection with the next generation core network.
  • the LTE base station is connected to the EPC, and the LTE base station is connected to a non-standalone (NSA) NR base station, and the user plane of the NSA NR is directly connected to the EPC via the LTE base station.
  • the terminal supporting the network architecture is connected to the EPC through the LTE base station, and performs data transmission through the LTE base station and the NR base station.
  • the terminal of this type may need to perform signal measurement for the NR cell of the NSA type, but the terminal of this type does not choose to camp in the cell selection or reselection, including the NSA type and the Standalone (SA) type.
  • NR cell In order to enable the terminal to connect to the EPC only through the LTE base station and perform data transmission through the NSA NR, either of the following methods may be used:
  • NR uses a unique frequency point different from that of the LTE base station, that is, the terminal can distinguish between the NR and other systems only by using the frequency point, and the terminal does not scan at the frequency used by the NR when performing cell selection or cell reselection. frequency.
  • Mode 2 The capability of the terminal is set to not support the NR system (Radio Access Technologies, RAT). Therefore, when the cell is selected and reselected, the cell of the standard type NR is not considered.
  • NR system Radio Access Technologies, RAT
  • Each type of cell uses different types of physical signal characteristics such that the type of cell can be determined by identifying the physical signal characteristics of each cell. The terminal can thus not camp on the NR cell after determining that the physical signal characteristic of the cell is an NR cell.
  • Mode 4 The NR cell broadcasts its system type NR through system information.
  • the terminal determines by reading system information When the cell type of the cell that sends the system information is NR, the cell is not selected to be camped on.
  • Step 1 When the terminal performs cell selection, if it is determined that the cell to be accessed is an NR cell, it is directly determined that the terminal is prohibited from accessing, so that the terminal does not camp on the NR cell when the cell is selected.
  • Step 2 The neighboring cell list broadcasted by the LTE base station does not include the NR cell.
  • the terminal performs cell reselection the NR cell not included in the cell list is not measured, so that the terminal does not reselect the cell to the NR cell.
  • the foregoing method 1 to method 5 can also be used in the second possible architecture.
  • the eLTE base station is connected to the next generation core network, and the eLTE base station is connected to the NSA type NR base station, and the NSA NR base station user is connected. It is connected to the next-generation core network via an eLTE base station or directly.
  • the terminal supporting the network architecture is connected to the next-generation core network through the eLTE base station, and performs data transmission through the eLTE base station and the NR base station.
  • the terminal of this type may need to perform signal measurement for the NR cell of the NSA type, but the terminal of this type does not choose to camp in the cell selection or reselection, including the NSA type and the Standalone (SA) type.
  • NR cell The corresponding method 5 is:
  • Step 1 When the terminal performs cell selection, if it is determined that the cell to be accessed is an NR cell, it is determined that the terminal is prohibited from accessing, so that the terminal does not camp on the NR cell when the cell is selected.
  • Step 2 The LTE cell is not included in the cell neighbor list broadcast by the eLTE base station. When the terminal performs cell reselection, the NR cell not included in the cell list is not measured, so that the terminal does not reselect the cell to the NR cell.
  • the terminal can only connect to the next generation core network through the eLTE base station, and can perform data transmission using the NR cell.
  • the NR terminal refers to a terminal that only has the capability of accessing the next-generation core network through the NR cell.
  • the NSA NR base station refers to a base station where the signaling plane is not directly connected to the core network, and the NR terminal cannot be connected to the core network, and only the data transmission function may be provided.
  • the NR gNB is directly connected to the next generation core network.
  • the terminal may not be camped on the NSA NR cell by any of the following methods.
  • Step 1 The NSA NR cell is set to barred (Barred), and the terminal does not select the NSA NR cell camping when the cell is selected.
  • Step 2 The NSA NR cell is not included in the neighbor list broadcasted by the current serving cell of the terminal, and the terminal does not consider the NSA NR cell when performing cell reselection.
  • Method 3 Cell broadcast network type indication information, and the network type indication information indicates that the cell is an NSA NR cell or an SA NR cell.
  • the NR terminal reads the network type indication information of the cell broadcast, thereby determining that the cell is an NSA NR cell or an SA NR cell, thereby performing cell selection or reselection according to the network type of the cell, for example, not selecting the NSA NR.
  • the embodiment of the present application further provides a cell reselection apparatus, which can perform the foregoing method embodiments.
  • the device includes:
  • the transceiver unit 501 is configured to measure the reference signals of the X neighboring cells working at the target frequency point, and obtain X signal measurement values;
  • the processing unit 502 is configured to determine that the signal measurement value of the N cells in the X neighboring cells meets a cell reselection condition, and when determining that at least one evolved long term evolution cell exists in the N cells, A cell with the largest signal measurement value in at least one evolved long term evolution cell is used as a reselected cell.
  • processing unit 502 is further configured to:
  • the cell reselection priority of the target frequency point is the same as the cell reselection priority of the current camping cell's working frequency point, the reference signals of the X neighboring cells working at the target frequency point are measured, and X signal measurements are obtained. After the value:
  • the cell reselection condition Determining that the signal measurement values of the N neighboring cells and the N cells in the current camping cell satisfy the cell reselection condition, and sorting the N cells according to the signal measurement values of the N cells, and determining the When there is at least one evolved long term evolution cell in the N cells, the most ranked cell in the at least one evolved long term evolution cell is used as the reselected cell.
  • processing unit 502 is further configured to:
  • the cell with the largest signal measurement value among the N cells is used as the reselected cell.
  • processing unit 502 is further configured to:
  • the evolved long-term evolved cell exists in the M cells for M cells operating at a frequency point other than the target frequency point
  • the cell in which the signal measurement value of the evolved long-term evolution cell of the M cells is higher than a preset threshold, and the frequency of the working frequency is the highest, and the signal measurement value is the largest is used as the reselected cell.
  • processing unit 502 is further configured to:
  • the cells in the M cells whose signal measurement value is higher than the preset threshold and whose signal measurement value is the largest are used as the reselected cell.
  • the transceiver unit 501 is further configured to:
  • first cell type indication information sent by the currently camped cell or receiving, by the terminal, first cell type indication information sent by the neighboring cell, where the first cell type is sent
  • the indication information indicates that the cell is an evolved long term evolution cell
  • the transceiver unit 501 is further configured to:
  • the transceiver unit 501 is further configured to:
  • the transceiver unit 501 is further configured to:
  • the embodiment of the present application further provides a terminal, where the terminal can perform the foregoing method embodiments.
  • the terminal includes: a processor 610, a memory 620, and a transceiver 630.
  • Transceiver 630 can be coupled to an antenna.
  • the transceiver 630 receives the information transmitted by the base station through the antenna and transmits the information to the processor 610 for processing.
  • the processor 610 processes the data of the terminal and transmits it to the base station through the transceiver 630.
  • the transceiver 630 is configured to measure the reference signals of the X neighboring cells working at the target frequency point, and obtain X letters. Number measurement value;
  • the processor 610 is configured to determine that the signal measurement value of the N cells in the X neighboring cells meets a cell reselection condition, and when determining that at least one evolved long term evolution cell exists in the N cells, A cell with the largest signal measurement value in at least one evolved long term evolution cell is used as a reselected cell.
  • processor 610 is further configured to:
  • the cell reselection priority of the target frequency point is the same as the cell reselection priority of the current camping cell's working frequency point, the reference signals of the X neighboring cells working at the target frequency point are measured, and X signal measurements are obtained. After the value:
  • the cell reselection condition Determining that the signal measurement values of the N neighboring cells and the N cells in the current camping cell satisfy the cell reselection condition, and sorting the N cells according to the signal measurement values of the N cells, and determining the When there is at least one evolved long term evolution cell in the N cells, the most ranked cell in the at least one evolved long term evolution cell is used as the reselected cell.
  • processor 610 is further configured to:
  • the cell with the largest signal measurement value among the N cells is used as the reselected cell.
  • processor 610 is further configured to:
  • the evolved long-term evolved cell exists in the M cells for M cells operating at a frequency point other than the target frequency point
  • the cell in which the signal measurement value of the evolved long-term evolution cell of the M cells is higher than a preset threshold, and the frequency of the working frequency is the highest, and the signal measurement value is the largest is used as the reselected cell.
  • processor 610 is further configured to:
  • the cells in the M cells whose signal measurement value is higher than the preset threshold and whose signal measurement value is the largest are used as the reselected cell.
  • the transceiver 630 is further configured to:
  • first cell type indication information sent by the currently camped cell or receiving, by the terminal, first cell type indication information sent by the neighboring cell, where the first cell type is sent
  • the indication information indicates that the cell is an evolved long term evolution cell
  • the transceiver 630 is further configured to:
  • the transceiver 630 is further configured to:
  • the transceiver 630 is further configured to:
  • the transceiver 630 may be a wired transceiver, a wireless transceiver, or a combination thereof.
  • the wired transceiver can be, for example, an Ethernet interface.
  • the Ethernet interface can be an optical interface, an electrical interface, or a combination thereof.
  • Wireless transceivers such as Think of a wireless LAN transceiver, a cellular network transceiver, or a combination thereof.
  • the processor 610 can be a central processing unit (English: central processing unit, abbreviated: CPU), a network processor (English: network processor, abbreviated: NP) or a combination of a CPU and an NP.
  • Processor 610 can also further include a hardware chip.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (abbreviated as PLD), or a combination thereof.
  • ASIC application-specific integrated circuit
  • PLD programmable logic device
  • the above PLD can be a complex programmable logic device (English: complex programmable logic device, abbreviation: CPLD), field-programmable gate array (English: field-programmable gate array, abbreviation: FPGA), general array logic (English: generic array Logic, abbreviation: GAL) or any combination thereof.
  • the memory 620 may include a volatile memory (English: volatile memory), such as a random access memory (English: random-access memory, abbreviation: RAM); the memory 620 may also include a non-volatile memory (English: non-volatile memory) ), such as read-only memory (English: read-only memory, abbreviation: ROM), flash memory (English: flash memory), hard disk (English: hard disk drive, abbreviation: HDD) or solid state drive (English: solid-state Drive, abbreviation: SSD); the memory 620 may also include a combination of the above types of memories.
  • ROM read-only memory
  • flash memory English: flash memory
  • HDD hard disk drive
  • SSD solid state drive
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

一种小区重选方法及装置，包括：终端对工作在目标频点上的X个邻区的参考信号进行测量，获得X个信号测量值；所述终端确定所述X个邻区中存在N个小区的信号测量值满足小区重选条件，则在确定所述N个小区中存在至少一个演进的长期演进小区时，则将所述至少一个演进的长期演进小区中信号测量值最大的小区作为重选的小区。

Description

一种小区重选方法及装置
本申请要求在2016年11月4日提交国家知识产权局、申请号为201610979443.9、发明名称为“一种小区重选方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种小区重选方法及装置。
背景技术
现有的长期演进(Long Term Evolution，LTE)系统中，LTE中的接入网设备之间通过S1接口接入进化的分组核心网(The Evolved Packet Core，EPC)，同时，接入网设备之间通过X2接口相互连接，用于信息交互。4G核心网向5G核心网的平滑演进过程中，可以将LTE系统演进为eLTE(Evolved LTE，演进的LTE)系统，从而令eLTE的接入网设备具有接入5G核心网的功能，本申请实施例中，将支持新功能的5G核心网也称为下一代核心网(The Next-Generation Core，NG-Core)。空口上，eLTE系统依然采用LTE的方式，为终端提供服务。
为了能够利用eLTE增强的新功能，在eLTE与LTE共同存在的部署场景中，eLTE中的接入网设备和LTE中的接入网设备使用相同的频点，且空口技术，尤其是物理层技术相同。然而，在上述场景中，终端如何接入演进的长期演进小区，目前还没有一种有效的解决方案。
发明内容
本申请实施例提供一种小区重选方法及装置，用以实现终端接入演进的长期演进小区。
本申请实施例提供一种小区重选方法，包括：
终端对工作在目标频点上的X个邻区的参考信号进行测量，获得X个信号测量值；
所述终端确定所述X个邻区中存在N个小区的信号测量值满足小区重选条件，则在确定所述N个小区中存在至少一个演进的长期演进小区时，则将所述至少一个演进的长期演进小区中信号测量值最大的小区作为重选的小区。
根据本申请实施例提供的方法，终端在目标频点上进行测量后，获得N个信号测量值，并在确定所述X个邻区中存在N个小区的信号测量值满足小区重选条件后，在确定所述N个小区中存在至少一个演进的长期演进小区时，将所述至少一个演进的长期演进小区中信号测量值最大的小区作为重选的小区。根据上述方法，终端可以实现接入信号测量值最大的演进的长期演进小区，从而提高终端的信号质量。
可选的，所述方法还包括：
若目标频点的小区重选优先级与当前驻留小区的工作频点的小区重选优先级相同，所述终端对工作在目标频点上的X个邻区的参考信号进行测量，获得X个信号测量值后：
所述终端对当前驻留小区的参考信号进行测量，获得当前驻留小区的信号测量值；
终端确定所述X个邻区以及当前驻留小区中存在N个小区的信号测量值满足小区重选 条件，则根据所述N个小区的信号测量值对所述N个小区排序，并确定所述N个小区中存在至少一个演进的长期演进小区时，将所述至少一个演进的长期演进小区中排序最大的小区作为重选的小区。
可选的，所述方法还包括：
所述终端若确定所述N个小区中不存在演进的长期演进小区，则将所述N个小区中信号测量值最大的小区作为重选的小区。
可选的，所述方法还包括：
所述终端若确定所述N个小区中不存在演进的长期演进小区，则针对工作在除所述目标频点之外的频点上的M个小区，在所述M个小区中存在演进的长期演进小区时，将所述M个小区的演进的长期演进小区中信号测量值高于预设门限、且工作的频点的优先级最高、且信号测量值最大的小区作为重选的小区。
可选的，所述方法还包括：
所述终端若确定所述N个小区中不存在信号测量值高于预设门限的演进的长期演进小区，则针对工作在除所述目标频点之外的频点上的M个小区，在所述M个小区中不存在信号测量值高于预设门限的演进的长期演进小区时，将所述M个小区中信号测量值高于预设门限、且信号测量值最大的小区作为重选的小区。
可选的，所述终端确定所述N个小区中存在至少一个演进的长期演进小区之前，还包括：
针对所述N个小区中的任意一个小区，所述终端接收当前驻留的小区发送的第一小区类型指示信息，或者所述终端接收该邻区发送的第一小区类型指示信息；所述第一小区类型指示信息指示该小区为演进的长期演进小区；
所述终端根据所述第一小区类型指示信息确定该小区是否为演进的长期演进小区。
可选的，所述终端确定所述N个小区中存在至少一个演进的长期演进小区之前，还包括：
所述终端接收当前驻留的小区发送的第二小区类型指示信息，所述第二小区类型指示信息指示所述终端当前驻留的小区的邻区为演进的长期演进小区。
可选的，所述终端对工作在目标频点上的X个邻区的参考信号进行测量之前，还包括：
所述终端接收接入网设备发送的通知消息，所述通知消息指示所述目标频点上存在演进的长期演进小区。
可选的，所述方法还包括：
所述终端确定当前驻留的小区不为演进的长期演进小区。
本申请实施例提供一种小区重选装置，包括：
收发单元，用于对工作在目标频点上的X个邻区的参考信号进行测量，获得X个信号测量值；
处理单元，用于确定所述X个邻区中存在N个小区的信号测量值满足小区重选条件，则在确定所述N个小区中存在至少一个演进的长期演进小区时，则将所述至少一个演进的长期演进小区中信号测量值最大的小区作为重选的小区。
可选的，所述处理单元还用于：
若目标频点的小区重选优先级与当前驻留小区的工作频点的小区重选优先级相同， 对工作在目标频点上的X个邻区的参考信号进行测量，获得X个信号测量值后：
对当前驻留小区的参考信号进行测量，获得当前驻留小区的信号测量值；
确定所述X个邻区以及当前驻留小区中存在N个小区的信号测量值满足小区重选条件，则根据所述N个小区的信号测量值对所述N个小区排序，并确定所述N个小区中存在至少一个演进的长期演进小区时，将所述至少一个演进的长期演进小区中排序最大的小区作为重选的小区。
可选的，所述处理单元还用于：
若确定所述N个小区中不存在演进的长期演进小区，则将所述N个小区中信号测量值最大的小区作为重选的小区。
可选的，所述处理单元还用于：
若确定所述N个小区中不存在演进的长期演进小区，则针对工作在除所述目标频点之外的频点上的M个小区，在所述M个小区中存在演进的长期演进小区时，将所述M个小区的演进的长期演进小区中信号测量值高于预设门限、且工作的频点的优先级最高、且信号测量值最大的小区作为重选的小区。
可选的，所述处理单元还用于：
若确定所述N个小区中不存在信号测量值高于预设门限的演进的长期演进小区，则针对工作在除所述目标频点之外的频点上的M个小区，在所述M个小区中不存在信号测量值高于预设门限的演进的长期演进小区时，将所述M个小区中信号测量值高于预设门限、且信号测量值最大的小区作为重选的小区。
可选的，所述收发单元还用于：
针对所述N个小区中的任意一个小区，接收当前驻留的小区发送的第一小区类型指示信息，或者所述终端接收该邻区发送的第一小区类型指示信息；所述第一小区类型指示信息指示该小区为演进的长期演进小区；
根据所述第一小区类型指示信息确定该小区是否为演进的长期演进小区。
可选的，所述收发单元还用于：
接收当前驻留的小区发送的第二小区类型指示信息，所述第二小区类型指示信息指示终端当前驻留的小区的邻区为演进的长期演进小区。
可选的，所述收发单元还用于：
接收接入网设备发送的通知消息，所述通知消息指示所述目标频点上存在演进的长期演进小区。
可选的，所述收发单元还用于：
确定当前驻留的小区不为演进的长期演进小区。
一种终端，包括：
收发机，用于对工作在目标频点上的X个邻区的参考信号进行测量，获得X个信号测量值；
处理器，用于确定所述X个邻区中存在N个小区的信号测量值满足小区重选条件，则在确定所述N个小区中存在至少一个演进的长期演进小区时，则将所述至少一个演进的长期演进小区中信号测量值最大的小区作为重选的小区。
可选的，所述处理器还用于：
若目标频点的小区重选优先级与当前驻留小区的工作频点的小区重选优先级相同， 对工作在目标频点上的X个邻区的参考信号进行测量，获得X个信号测量值后：
对当前驻留小区的参考信号进行测量，获得当前驻留小区的信号测量值；
确定所述X个邻区以及当前驻留小区中存在N个小区的信号测量值满足小区重选条件，则根据所述N个小区的信号测量值对所述N个小区排序，并确定所述N个小区中存在至少一个演进的长期演进小区时，将所述至少一个演进的长期演进小区中排序最大的小区作为重选的小区。
可选的，所述处理器还用于：
若确定所述N个小区中不存在演进的长期演进小区，则将所述N个小区中信号测量值最大的小区作为重选的小区。
可选的，所述处理器还用于：
若确定所述N个小区中不存在演进的长期演进小区，则针对工作在除所述目标频点之外的频点上的M个小区，在所述M个小区中存在演进的长期演进小区时，将所述M个小区的演进的长期演进小区中信号测量值高于预设门限、且工作的频点的优先级最高、且信号测量值最大的小区作为重选的小区。
可选的，所述处理器还用于：
若确定所述N个小区中不存在信号测量值高于预设门限的演进的长期演进小区，则针对工作在除所述目标频点之外的频点上的M个小区，在所述M个小区中不存在信号测量值高于预设门限的演进的长期演进小区时，将所述M个小区中信号测量值高于预设门限、且信号测量值最大的小区作为重选的小区。
可选的，所述收发机还用于：
针对所述N个小区中的任意一个小区，接收当前驻留的小区发送的第一小区类型指示信息，或者所述终端接收该邻区发送的第一小区类型指示信息；所述第一小区类型指示信息指示该小区为演进的长期演进小区；
根据所述第一小区类型指示信息确定该小区是否为演进的长期演进小区。
可选的，所述收发机还用于：
接收当前驻留的小区发送的第二小区类型指示信息，所述第二小区类型指示信息指示终端当前驻留的小区的邻区为演进的长期演进小区。
可选的，所述收发机还用于：
接收接入网设备发送的通知消息，所述通知消息指示所述目标频点上存在演进的长期演进小区。
可选的，所述收发机还用于：
确定当前驻留的小区不为演进的长期演进小区。
附图说明
图1为适用于本申请实施例的一种网络架构示意图；
图2为适用于本申请实施例的一种场景示意图；
图3为本申请实施例提供的一种小区重选方法流程示意图；
图4为本申请实施例提供的一种通信方法流程示意图；
图5为本申请实施例提供的一种小区重选装置结构示意图；
图6为本申请实施例提供的一种终端结构示意图。
具体实施方式
本申请实施例可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、先进的长期演进(Advanced long term evolution，LTE-A)系统、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、演进的长期演进(evolved Long Term Evolution，eLTE)系统、5G等其它移动通信系统。
以下，对本申请中的部分用语进行解释说明，以便于本领域技术人员理解。
1)、终端，又称之为用户设备(User Equipment，UE)，是一种向用户提供语音和/或数据连通性的设备，例如，具有无线连接功能的手持式设备、车载设备等。常见的终端例如包括：手机、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备，例如智能手表、智能手环、计步器等。
2)、接入网设备，可以是普通的基站(如NodeB或eNB)，可以是新无线的控制器(New Radio controller，NR controller)，可以是集中式网元(Centralized Unit)，可以是新无线基站，可以是射频拉远模块，可以是微基站，可以是中继(relay)，可以是分布式网元(Distributed Unit)，可以是接收点(Transmission Reception Point，TRP)或传输点(Transmission Point，TP)，可以是DU和TP/TRP，或者任何其它无线接入设备，但本申请实施例不限于此。
如图1所示，为适用于本申请实施例的一种网络架构示意图。图1中演进分组核心(Evolved Packet Core，EPC)网与下一代核心网共存，其中LTE基站与EPC连接。本申请实施例中，将可以接入接入EPC以及下一代核心网的LTE基站称之为eLTE基站，图1中，eLTE基站可以与EPC以及下一代核心网连接，同时，下一代无线接入网(New Radio Access Network，NR)的基站gNB可以与下一代核心网连接。
终端可以根据需要，通过基站连接到EPC或下一代核心网。具体的，结合图1，如图2所示，为适用于本申请实施例的一种场景示意图。图2中，LTE基站与EPC连接，eLTE基站与EPC以及下一代核心网连接，终端位于LTE基站与eLTE基站重叠的区域，终端可以通过eLTE基站接入EPC或者下一代核心网，也可以通过LTE基站接入EPC。
基于上述描述，如图3所示，为本申请实施例提供的一种小区重选方法流程示意图。
参见图3，该方法包括：
步骤301：终端对工作在目标频点上的X个邻区的参考信号进行测量，获得X个信号测量值。
步骤302：所述终端确定所述X个邻区中存在N个小区的信号测量值满足小区重选条件，则在确定所述N个小区中存在至少一个演进的长期演进小区时，则将所述至少一个演进的长期演进小区中信号测量值最大的小区作为重选的小区。
其中，所述终端可以通过预设算法将所述至少一个演进的长期演进小区的信号测量值折算为每个邻区的排序，从而实现将所述至少一个演进的长期演进小区排序，举例来说，所述终端可以根据每个演进的长期演进小区的信号测量值计算每个演进的长期演进小区R(Rank，次序)值，从而实现根据R值确定每个演进的长期演进小区的排序。R值的计算可以参考现有技术，在此不再赘述。
需要说明的是，本申请实施例中，演进的长期演进eLTE小区可以使用与LTE小区相同的频点、采用相同的空口传输技术，可以连接到EPC，也可以连接到下一代核心网，例如5G核心网。本申请实施例中的下一代核心网是指5G网络的核心网。
可选的，步骤301之前，终端可能处于关机状态，当终端开机启动之后，需要选择一个小区驻留。若终端为既可以接入EPC，也可以接入下一代核心网的终端，终端在开机后可以选择优先接入下一代核心网，那么终端需要优先选择演进的长期演进小区进行驻留。
随后，终端选择公共陆地移动网络(Public Land Mobile Network，PLMN)和频点，并在选定的频点上进行寻找合适的小区。若小区中没有广播指示该小区类型的小区类型指示信息，则终端可以按照现有方式的方法进行小区选择，在此不再赘述；若小区中广播了指示该小区类型的小区类型指示信息，则终端可以在选定的频点上扫描到小区后，终端若通过测量参考信号判断该小区的参考信号满足小区重选条件，且通过读取该小区的系统信息确定该小区为演进的长期演进小区，此时终端可以选择接入该小区。若无法找到可以满足小区选择准则的演进的长期演进小区，则按照现有机制寻找可以接入的LTE小区。
本申请实施例中，小区重选条件可以为4G网络系统中的小区重选条件，在此不再赘述。
当然以上只是示例，终端还可以通过其他方式在开机时选择小区接入，在此不再赘述。
步骤301中，一种可能的实现方式中，终端驻留到小区之后，终端若确定存在工作的频点比终端当前驻留的小区工作的频点的重选优先级高的小区，则可以启动测量，进行小区重选。
下面描述终端启动测量之后的具体步骤：
步骤一：终端选择目标频点，目标频点为比终端当前驻留的小区工作的频点的重选优先级高的频点。
步骤二：终端对该目标频点上的邻区进行测量。
可选的，该步骤包括终端判断若该目标频点为LTE频点，则读取当前驻留小区系统信息中的邻区类型指示信息，判断邻区中是否存在演进的长期演进小区。若该频点不为LTE频点，则直接判断该频点上没有演进的长期演进小区。
步骤三：针对测量结果，判断测量的小区是否满足小区重选条件。得到满足小区重选条件的N个小区。该步骤可能存在以下两种情况：
情况1：若N个小区中存在演进的长期演进小区，则在该目标频点内的N个满足小区重选条件的邻区中选择信号质量最好的的演进的长期演进小区作为重选的小区。
情况2：若N个小区中不存在演进的长期演进小区，则选择信号质量最好的小区作为重选的小区，或者按照频点优先级从高到低依次继续在其他频点扫描，直到找到可选的演进的长期演进小区作为重选的小区，若找不到可选的演进的长期演进小区，则在扫描到的满足小区重选条件的小区中选择工作的频点的重选优先级最高的小区作为重选的小区。
另一种可能的实现方式中，终端驻留到小区之后，终端确定存在工作的频点与终端当前驻留的小区工作的频点的重选优先级相同的小区，则启动测量，进行小区重选。
下面描述终端启动测量之后的具体步骤：
步骤一：终端选择目标频点，目标频点为与终端当前驻留的小区工作的频点的重选优先级相同的频点。
步骤二：终端对该目标频点上的X个邻区进行测量，获得X个信号测量值。
步骤三：针对小区信号质量测量结果，计算每个邻区和当前驻留的小区的信号测量值，判断所述X个邻区以及所述终端当前驻留的小区中是否满足小区重选条件的小区，若存在，可以得到满足小区重选条件的N个小区。然后根据N个小区的信号测量值对上述N个小区进行排序，基于排序结果选择符合小区重选条件的小区。其中，可以根据信号测量值确定每个邻区和当前驻留小区的R值等值，然后根据R值对上述小区排序。该步骤可能存在以下两种情况：
情况1：若在上述N个小区中存在演进的长期演进小区，则在该目标频点内的小区的中选择排序最高的演进的长期演进小区作为重选的小区，例如，可以选择R值最高的演进的长期演进小区作为重选的小区。
情况2：若在上述N个小区中不存在演进的长期演进小区，则选择排序最高的小区作为重选的小区，或者按照频点优先级从高到低依次继续在其他频点扫描，直到找到可选的演进的长期演进小区作为重选的小区，若找不到可选的演进的长期演进小区，则选择工作的频点的重选优先级最高的小区作为重选的小区。
另一种可能的实现方式中，终端驻留到小区之后，终端确定存在工作频点比终端当前驻留的小区工作的频点的重选优先级低的小区，启动测量，进行小区重选。
下面描述终端启动测量之后的具体步骤：
步骤一：终端选择目标频点，目标频点为比终端当前驻留的小区工作的频点的重选优先级低的频点。
步骤二：终端对该目标频点上的邻区进行测量。
可选的，该步骤包括终端判断若该目标频点为LTE频点，则读取当前驻留小区系统信息中的邻区类型指示信息，判断邻区中是否存在演进的长期演进小区。若该频点不为LTE频点，则直接判断该频点上没有演进的长期演进小区。
步骤三：针对测量结果，判断测量的小区是否满足小区重选条件。若存在满足小区重选条件的N个小区。该步骤可能存在以下两种情况：
情况1：若N个小区中存在演进的长期演进小区，则在该目标频点内的N个满足小区重选条件的邻区中选择信号质量最好的的演进的长期演进小区作为重选的小区。
情况2：若N个小区中不存在演进的长期演进小区，则选择信号质量最好的小区作为重选的小区。
另一种可能的实现方式中，终端驻留到小区之后，可以判断是否满足测量触发条件，若确定满足测量触发条件则进行测量。
测量触发条件可以包括以下一种或多种：
终端接收接入网设备发送的通知消息，所述通知消息指示所述目标频点上存在演进的长期演进小区；所述通知消息可以为接入网设备广播发送的，也可以为接入网设备通过专用信令发送给终端的，本申请实施例对此并不限定。
终端确定所述终端未驻留在演进的长期演进小区中；
终端确定当前驻留的小区的信号质量小于门限值；
终端接收到接入网设备发送的测量指示信息，用于指示终端进行测量。
可选的，终端在判断是否满足测量触发条件之前，所述终端还可以确定终端当前驻留的小区满足以下条件：终端确定当前驻留的小区为LTE小区、且当前驻留的小区的邻区中存在与当前驻留的小区工作的频点重选优先级相同或者比当前驻留的小区工作的频点重 选优先级低的演进的长期演进小区。
需要说明的是，本申请实施例中，终端可以根据接收到的小区类型指示信息确定终端驻留的小区或者终端驻留的小区的邻区是演进的长期演进小区还是LTE小区，下面详细描述：
第一种实现方式：接入网设备发送本小区为演进的长期演进小区类型指示信息，指示出该小区为LTE小区或演进的长期演进小区。
第二种实现方式：接入网设备向终端发送终端驻留的小区的邻区对应的小区类型指示信息，指示出终端驻留的小区的邻区为LTE小区或演进的长期演进小区。
结合上面的描述，可选的，在步骤302之前，终端还可以接收当前驻留的小区发送的第一小区类型指示信息，所述第一小区类型指示信息指示所述终端当前驻留的小区为LTE小区或演进的长期演进小区。
相应的，针对所述N个邻区中的任意一个邻区，所述终端接收该邻区发送的第一小区类型指示信息；或者，所述终端接收驻留小区发送的第二小区类型指示信息。所述第一小区类型指示信息指示终端该小区为LTE小区或演进的长期演进小区；所述第二小区类型指示信息指示终端驻留小区的邻区为LTE小区或演进的长期演进小区。
可选的，基站可以通过广播方式向终端发送所述第一类型小区指示信息。
可选的，基站可以通过广播方式向终端发送所述第二类型小区指示信息，或者通过终端专有信令向终端发送第二类型小区指示信息。
随后，在步骤302中，终端根据所述N个信号测量值对所述N个小区排序，根据排序结果以及N个小区中是否存在演进的长期演进小区，可以存在以下几种情况：
第一种情况：终端确定所述N个小区中存在至少一个信号测量值高于预设门限的演进的长期演进小区时，将所述至少一个演进的长期演进小区中排序最大或者排序最大的小区作为重选的小区。
第二种情况：终端确定所述N个小区中不存在信号测量值高于预设门限的演进的长期演进小区，则将所述N个小区中信号测量值高于预设门限、且信号测量值最大或者排序最大的小区作为重选的小区。
第三种情况：终端确定所述N个小区中不存在信号测量值高于预设门限的演进的长期演进小区，则针对工作在除所述目标频点之外的频点上的M个小区，在所述M个小区中存在演进的长期演进小区时，将所述M个小区的演进的长期演进小区中信号测量值高于预设门限、且工作的频点的优先级最高、且信号测量值最大或者排序最大的小区作为重选的小区。
第四种情况：终端确定所述N个小区中不存在信号测量值高于预设门限的演进的长期演进小区，则针对工作在除所述目标频点之外的频点上的M个小区，在所述M个小区中不存在信号测量值高于预设门限的演进的长期演进小区时，将所述M个小区中信号测量值高于预设门限、且信号测量值最大的小区作为重选的小区。
本申请实施例中，为了使得终端能够区分小区的类型，基站会向终端发送小区类型指示信息，从而指示出于该小区类型指示信息对应的小区是LTE小区还是演进的长期演进小区。基站在向终端发送小区类型指示信息之前，可以相互发送能力信息，能力信息指示出基站所支持的网络功能，下面详细描述。
如图4所示，为本申请实施例提供的一种通信方法流程示意图。
参见图4，该方法包括：
步骤401：第一接入网设备接收第二接入网设备发送的第一能力信息，所述第一能力信息指示所述第二接入网设备所支持的网络功能。
第一接入网设备与第二接入网设备之间可以通过X2接口等接口相互通信。
步骤402：所述第一接入网设备根据所述第一能力信息确定驻留在所述第一接入网设备的小区中终端的移动性管理参数。
其中，移动性管理参数可以包括小区重选的专用频率优先级等参数。
本申请实施例中，能力信息可以指示出接入网设备支持以下一项或多项功能：
接入网设备是否为eLTE类型的接入网设备；
接入网设备是否接入下一代核心网；
接入网设备是否支持网络切片；
接入网设备支持的网络切片的类型；
接入网设备是否支持下一代核心网的服务质量(Quality of Service，QoS)框架；
接入网设备是否支持对处于第三态终端的移动性管理，其中，第三态可以是指节能模式(economic mode)或者非活动模式(inactive mode)等模式。
步骤401中，第一接入网设备接收到第一能力信息之后，可以在自身维护的邻区列表中加入第二接入网设备的“第一能力信息”。
同时，第一接入网设备还可以向所述第二接入网设备发送第二能力信息，所述第二能力信息指示出所述第一接入网设备所支持的网络功能。
第一接入网设备还可以向终端发送小区类型指示信息，小区类型指示信息指示出与该小区类型指示信息对应的小区为LTE小区或演进的长期演进小区。
例如，第一接入网设备向终端发送第一小区类型指示信息，指示出该小区LTE小区或演进的长期演进小区。或者，第一接入网设备向终端发送第二小区类型指示信息，指示出终端驻留的小区的邻区为LTE小区或演进的长期演进小区。
可选的，本申请实施例中，第一接入网设备还可以接收到核心网设备发送的接入类禁止(Access Class Barred，ACB)列表以及与所述ACB列表对应的核心网类型标识，所述核心网类型标识指示出所述ACB列表对应的核心网。ACB列表中包括至少一个接入类(Access Class,AC)，网络侧可以通过为不同的AC设置不同的接入概率来进行接入控制。举例来说，第一接入网设备若同时接入第一核心网以及第二核心网，则可以接收到第一ACB列表以及第一核心网类型标识、第二ACB列表以及第二核心网类型标识，其中第一核心网类型标识指示第一ACB列表对应第一核心网，第二核心网类型标识指示第二ACB列表对应第二核心网。
其中，第一核心网可以为EPC，第二核心网可以为下一代核心网；当然反过来也可以，即第一核心网可以为下一代核心网，第二核心网可以为EPC。
本申请实施例中，通过核心网类型标识向终端指示多个ACB列表中每个ACB列表对应的核心网，从而实现在不同核心网中分别对终端进行接入控制，每个核心网的接入控制互不影响，从而使得每个核心网可以根据自身的负载等状况判断是否允许终端接入。例如，终端读取小区的系统信息后，获取判断该小区是否“barred”的ACB列表时，需要区分该ACB列表对应的核心网。若该ACB列表对应EPC，终端根据该ACB列表判断的出该小区被禁止接入时，终端不能发起对EPC的附着等接入核心网流程，但该并不不影响终端向 下一代核心网的接入，反之亦然。
步骤402中，移动性管理参数中包括终端小区重选的专用频率优先级时，第一接入网设备若根据所述第一能力信息确定所述第二接入网设备为eLTE类型的接入网设备，则将所述专用频率优先级中所述第二接入网设备所使用的频点的优先级调高，从而使得终端在小区重选时，增加终端重选到第二接入网设备的小区中的概率。
第一接入网设备还可以根据第二接入网设备的第一能力信息，为终端选择切换的目标小区。可选的，可以基于终端的业务类型来匹配能够支持该业务类型目标小区。如，终端设备在源小区中使用网络切片，源小区为终端选择支持该网络切片的邻区作为该终端切换的目标小区。
终端在小区间移动时，若从源小区移动到目标小区，目标小区需要在终端接入到所述目标小区之后，去源小区获取终端的上下文信息。本申请实施例中，终端由源小区移动到目标小区后，所述终端向目标小区发送消息，携带源小区信息，该源小区信息用于辅助目标小区找到其源小区。目标小区给源小区发送请求消息，用于请求获取所述终端的上下文信息。源小区收到所述请求，将所述终端在每个核心网对应的上下文信息以及每个上下文信息对应的上下文标识发送给所述目标小区；每个上下文标识指示出与该上下文标识对应的上下文信息所对应的核心网。通过上述方法，由于每个上下文信息都有对应的上下文标识，从而向目标小区指示出每个上下文信息对应的核心网，从而使得目标小区能够确定每个上下文信息对应的核心网，从而避免上下文信息获取的模糊，方便终端在多个核心网之间的上下文建立。
5G网络中有多种接入网类型并存，如LTE基站、eLTE基站和NR基站，通过不同类型基站之间的协作，可以形成多种网络架构方式，即5G的网络架构有多种方式。其中，NR基站可能有两种部署方式，包括NSA类型的NR基站和SA类型的NR基站。所述NSA类型的NR基站为一种基站部署方式。在该部署方式中，NR基站需要与LTE基站或eLTE基站相连，所述LTE基站或eLTE基站作为NR基站的控制面锚点，连接到EPC或者下一代核心网。所述SA类型的NR基站为另一种基站部署方式。在该部署方式中，NR基站与下一代核心网建立信令面连接。第一种可能的架构中，LTE基站与EPC连接，LTE基站与非独立部署(Non-Standalone，NSA)NR基站相连，所述NSA NR的用户面经由LTE基站或直接连接到EPC。相应的，支持该网络架构的终端通过LTE基站连接到EPC，并通过LTE基站和NR基站进行数据传输。此时，该类型的终端可能需要针对该NSA类型的NR小区进行信号测量，但是该类型的终端在小区选择或者重选时不选择驻留包括NSA类型和独立部署(Standalone，SA)类型在内的NR小区。为了使得终端仅能通过LTE基站连接至EPC，并通过NSA NR进行数据传输，可以采用以下任一方式：
方式1：NR使用与LTE基站不同的、独有的频点，即终端仅通过频点即可区分NR和其它系统，终端进行小区选择或小区重选时不会在NR使用的频点上扫频。
方式2：终端的能力设置为不支持NR制式(Radio Access Technologies，RAT)，因此在小区选择与重选时，不会考虑制式类型为NR的小区。
方式3：每种类型的小区使用不同类型的物理信号特征，从而可以通过识别每种小区的物理信号特征确定小区的类型。终端从而可以在判断小区的物理信号特征为NR小区后，不驻留该NR小区。
方式4：NR小区通过系统信息广播其制式类型为NR。终端通过读取系统信息，确定 发送该系统信息的小区的制式类型为NR时，不选择驻留该小区。
方法5：
步骤一：终端进行小区选择时，若确定将要接入的小区为NR小区，则直接确定所述终端为被禁止接入，从而在小区选择时，终端不会驻留到NR小区。
步骤二：LTE基站广播的小区邻区列表中不包含NR小区，终端进行小区重选时，不测量不包含在小区列表中的NR小区，从而终端不会小区重选至NR小区。
上述方法1至方法5也可以用于第二种可能的架构中，第二种可能的架构中，eLTE基站与下一代核心网连接，eLTE基站连接NSA类型的NR基站，所述NSA NR基站用户面经由eLTE基站或直接连接到下一代核心网。相应的，支持该网络架构的终端通过eLTE基站连接到下一代核心网，并通过eLTE基站和NR基站进行数据传输。此时，该类型的终端可能需要针对该NSA类型的NR小区进行信号测量，但是该类型的终端在小区选择或者重选时不选择驻留包括NSA类型和独立部署(Standalone，SA)类型在内的NR小区。相应的方法5为：
方法5：
步骤一：终端进行小区选择时，若确定将要接入的小区为NR小区，则判断所述终端为被禁止接入，从而在小区选择时，终端不会驻留到NR小区。步骤二：eLTE基站广播的小区邻区列表中不包含NR小区，终端进行小区重选时，不测量不包含在小区列表中的NR小区，从而终端不会小区重选至NR小区。
使用上述方法1至方法5之后，在该架构中，终端仅能通过eLTE基站连接至下一代核心网，并可以用NR小区进行数据传输。
本申请实施例中，NR终端是指仅具有通过NR小区接入下一代核心网能力的终端。NSA NR基站是指信令面并不直接连接核心网，不能将NR终端接入核心网，只可能为其提供数据传输功能的基站。
在此之前先描述几种架构。第三种可能的架构中，NR gNB直接连接到下一代核心网。
在第一种可能的架构至第三种可能的架构中，可以通过以下任一方式，使得终端不驻留到NSA NR小区。
方式1：步骤一：NSA NR小区设置为禁止接入(Barred)，终端在小区选择时不选择NSA NR小区驻留。步骤二：终端的当前服务小区广播的邻居列表中不包含NSA NR小区，终端在进行小区重选时不考虑NSA NR小区。
方法3：小区广播网络类型指示信息，网络类型指示信息指示出该小区是NSA NR小区或SA NR小区。NR终端读取小区广播的网络类型指示信息，从而确定小区是NSA NR小区或SA NR小区，从而根据小区的网络类型进行小区选择或重选，例如不选择NSA NR。
基于相同的技术构思，本申请实施例还提供一种小区重选装置，该装置可执行上述方法实施例。
参见图5，该装置包括：
收发单元501，用于对工作在目标频点上的X个邻区的参考信号进行测量，获得X个信号测量值；
处理单元502，用于确定所述X个邻区中存在N个小区的信号测量值满足小区重选条件，则在确定所述N个小区中存在至少一个演进的长期演进小区时，则将所述至少一个演进的长期演进小区中信号测量值最大的小区作为重选的小区。
可选的，所述处理单元502还用于：
若目标频点的小区重选优先级与当前驻留小区的工作频点的小区重选优先级相同，对工作在目标频点上的X个邻区的参考信号进行测量，获得X个信号测量值后：
对当前驻留小区的参考信号进行测量，获得当前驻留小区的信号测量值；
确定所述X个邻区以及当前驻留小区中存在N个小区的信号测量值满足小区重选条件，则根据所述N个小区的信号测量值对所述N个小区排序，并确定所述N个小区中存在至少一个演进的长期演进小区时，将所述至少一个演进的长期演进小区中排序最大的小区作为重选的小区。
可选的，所述处理单元502还用于：
若确定所述N个小区中不存在演进的长期演进小区，则将所述N个小区中信号测量值最大的小区作为重选的小区。
可选的，所述处理单元502还用于：
若确定所述N个小区中不存在演进的长期演进小区，则针对工作在除所述目标频点之外的频点上的M个小区，在所述M个小区中存在演进的长期演进小区时，将所述M个小区的演进的长期演进小区中信号测量值高于预设门限、且工作的频点的优先级最高、且信号测量值最大的小区作为重选的小区。
可选的，所述处理单元502还用于：
若确定所述N个小区中不存在信号测量值高于预设门限的演进的长期演进小区，则针对工作在除所述目标频点之外的频点上的M个小区，在所述M个小区中不存在信号测量值高于预设门限的演进的长期演进小区时，将所述M个小区中信号测量值高于预设门限、且信号测量值最大的小区作为重选的小区。
可选的，所述收发单元501还用于：
针对所述N个小区中的任意一个小区，接收当前驻留的小区发送的第一小区类型指示信息，或者所述终端接收该邻区发送的第一小区类型指示信息；所述第一小区类型指示信息指示该小区为演进的长期演进小区；
根据所述第一小区类型指示信息确定该小区是否为演进的长期演进小区。
可选的，所述收发单元501还用于：
接收当前驻留的小区发送的第二小区类型指示信息，所述第二小区类型指示信息指示终端当前驻留的小区的邻区为演进的长期演进小区。
可选的，所述收发单元501还用于：
接收接入网设备发送的通知消息，所述通知消息指示所述目标频点上存在演进的长期演进小区。
可选的，所述收发单元501还用于：
确定当前驻留的小区不为演进的长期演进小区。
基于相同的技术构思，本申请实施例还提供一种终端，该终端可执行上述方法实施例。
请参见图6，该终端包括：处理器610、存储器620、收发机630。收发机630可以与天线连接。在下行方向上，收发机630通过天线接收基站发送的信息，并将信息发送给处理器610进行处理。在上行方向上，处理器610对终端的数据进行处理，并通过收发机630发送给基站。
收发机630，用于对工作在目标频点上的X个邻区的参考信号进行测量，获得X个信 号测量值；
处理器610，用于确定所述X个邻区中存在N个小区的信号测量值满足小区重选条件，则在确定所述N个小区中存在至少一个演进的长期演进小区时，则将所述至少一个演进的长期演进小区中信号测量值最大的小区作为重选的小区。
可选的，所述处理器610还用于：
若目标频点的小区重选优先级与当前驻留小区的工作频点的小区重选优先级相同，对工作在目标频点上的X个邻区的参考信号进行测量，获得X个信号测量值后：
对当前驻留小区的参考信号进行测量，获得当前驻留小区的信号测量值；
确定所述X个邻区以及当前驻留小区中存在N个小区的信号测量值满足小区重选条件，则根据所述N个小区的信号测量值对所述N个小区排序，并确定所述N个小区中存在至少一个演进的长期演进小区时，将所述至少一个演进的长期演进小区中排序最大的小区作为重选的小区。
可选的，所述处理器610还用于：
若确定所述N个小区中不存在演进的长期演进小区，则将所述N个小区中信号测量值最大的小区作为重选的小区。
可选的，所述处理器610还用于：
若确定所述N个小区中不存在演进的长期演进小区，则针对工作在除所述目标频点之外的频点上的M个小区，在所述M个小区中存在演进的长期演进小区时，将所述M个小区的演进的长期演进小区中信号测量值高于预设门限、且工作的频点的优先级最高、且信号测量值最大的小区作为重选的小区。
可选的，所述处理器610还用于：
若确定所述N个小区中不存在信号测量值高于预设门限的演进的长期演进小区，则针对工作在除所述目标频点之外的频点上的M个小区，在所述M个小区中不存在信号测量值高于预设门限的演进的长期演进小区时，将所述M个小区中信号测量值高于预设门限、且信号测量值最大的小区作为重选的小区。
可选的，所述收发机630还用于：
针对所述N个小区中的任意一个小区，接收当前驻留的小区发送的第一小区类型指示信息，或者所述终端接收该邻区发送的第一小区类型指示信息；所述第一小区类型指示信息指示该小区为演进的长期演进小区；
根据所述第一小区类型指示信息确定该小区是否为演进的长期演进小区。
可选的，所述收发机630还用于：
接收当前驻留的小区发送的第二小区类型指示信息，所述第二小区类型指示信息指示终端当前驻留的小区的邻区为演进的长期演进小区。
可选的，所述收发机630还用于：
接收接入网设备发送的通知消息，所述通知消息指示所述目标频点上存在演进的长期演进小区。
可选的，所述收发机630还用于：
确定当前驻留的小区不为演进的长期演进小区。
本申请实施例中，收发机630可以是有线收发机，无线收发机或其组合。有线收发机例如可以为以太网接口。以太网接口可以是光接口，电接口或其组合。无线收发机例如可 以为无线局域网收发信机，蜂窝网络收发信机或其组合。处理器610可以是中央处理器(英文：central processing unit，缩写：CPU)，网络处理器(英文：network processor，缩写：NP)或者CPU和NP的组合。处理器610还可以进一步包括硬件芯片。上述硬件芯片可以是专用集成电路(英文：application-specific integrated circuit，缩写：ASIC)，可编程逻辑器件(英文：programmable logic device，缩写：PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(英文：complex programmable logic device，缩写：CPLD)，现场可编程逻辑门阵列(英文：field-programmable gate array，缩写：FPGA)，通用阵列逻辑(英文：generic array logic,缩写：GAL)或其任意组合。存储器620可以包括易失性存储器(英文：volatile memory)，例如随机存取存储器(英文：random-access memory，缩写：RAM)；存储器620也可以包括非易失性存储器(英文：non-volatile memory)，例如只读存储器(英文：read-only memory，缩写：ROM)，快闪存储器(英文：flash memory)，硬盘(英文：hard disk drive，缩写：HDD)或固态硬盘(英文：solid-state drive，缩写：SSD)；存储器620还可以包括上述种类的存储器的组合。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器610以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器610执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本申请的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本申请范围的所有变更和修改。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的范围。这样，倘若本申请的这些修改和变型属于本申请权利要求的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (27)

  1. 一种小区重选方法，其特征在于，包括：
    终端对工作在目标频点上的X个邻区的参考信号进行测量，获得X个信号测量值；
    所述终端确定所述X个邻区中存在N个小区的信号测量值满足小区重选条件，则在确定所述N个小区中存在至少一个演进的长期演进小区时，则将所述至少一个演进的长期演进小区中信号测量值最大的小区作为重选的小区。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    若目标频点的小区重选优先级与当前驻留小区的工作频点的小区重选优先级相同，所述终端对工作在目标频点上的X个邻区的参考信号进行测量，获得X个信号测量值后：
    所述终端对当前驻留小区的参考信号进行测量，获得当前驻留小区的信号测量值；
    终端确定所述X个邻区以及当前驻留小区中存在N个小区的信号测量值满足小区重选条件，则根据所述N个小区的信号测量值对所述N个小区排序，并确定所述N个小区中存在至少一个演进的长期演进小区时，将所述至少一个演进的长期演进小区中排序最大的小区作为重选的小区。
  3. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    所述终端若确定所述N个小区中不存在演进的长期演进小区，则将所述N个小区中信号测量值最大的小区作为重选的小区。
  4. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    所述终端若确定所述N个小区中不存在演进的长期演进小区，则针对工作在除所述目标频点之外的频点上的M个小区，在所述M个小区中存在演进的长期演进小区时，将所述M个小区的演进的长期演进小区中信号测量值高于预设门限、且工作的频点的优先级最高、且信号测量值最大的小区作为重选的小区。
  5. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    所述终端若确定所述N个小区中不存在信号测量值高于预设门限的演进的长期演进小区，则针对工作在除所述目标频点之外的频点上的M个小区，在所述M个小区中不存在信号测量值高于预设门限的演进的长期演进小区时，将所述M个小区中信号测量值高于预设门限、且信号测量值最大的小区作为重选的小区。
  6. 根据权利要求1至5任一所述的方法，其特征在于，所述终端确定所述N个小区中存在至少一个演进的长期演进小区之前，还包括：
    针对所述N个小区中的任意一个小区，所述终端接收当前驻留的小区发送的第一小区类型指示信息，或者所述终端接收该邻区发送的第一小区类型指示信息；所述第一小区类型指示信息指示该小区为演进的长期演进小区；
    所述终端根据所述第一小区类型指示信息确定该小区是否为演进的长期演进小区。
  7. 根据权利要求1至6任一所述的方法，其特征在于，所述终端确定所述N个小区中存在至少一个演进的长期演进小区之前，还包括：
    所述终端接收当前驻留的小区发送的第二小区类型指示信息，所述第二小区类型指示信息指示所述终端当前驻留的小区的邻区为演进的长期演进小区。
  8. 根据权利要求1至7任一所述的方法，其特征在于，所述终端对工作在目标频点上的X个邻区的参考信号进行测量之前，还包括：
    所述终端接收接入网设备发送的通知消息，所述通知消息指示所述目标频点上存在演进的长期演进小区。
  9. 根据权利要求8所述的方法，其特征在于，所述方法还包括：
    所述终端确定当前驻留的小区不为演进的长期演进小区。
  10. 一种小区重选装置，其特征在于，包括：
    收发单元，用于对工作在目标频点上的X个邻区的参考信号进行测量，获得X个信号测量值；
    处理单元，用于确定所述X个邻区中存在N个小区的信号测量值满足小区重选条件，则在确定所述N个小区中存在至少一个演进的长期演进小区时，则将所述至少一个演进的长期演进小区中信号测量值最大的小区作为重选的小区。
  11. 根据权利要求10所述的装置，其特征在于，所述处理单元还用于：
    若目标频点的小区重选优先级与当前驻留小区的工作频点的小区重选优先级相同，对工作在目标频点上的X个邻区的参考信号进行测量，获得X个信号测量值后：
    对当前驻留小区的参考信号进行测量，获得当前驻留小区的信号测量值；
    确定所述X个邻区以及当前驻留小区中存在N个小区的信号测量值满足小区重选条件，则根据所述N个小区的信号测量值对所述N个小区排序，并确定所述N个小区中存在至少一个演进的长期演进小区时，将所述至少一个演进的长期演进小区中排序最大的小区作为重选的小区。
  12. 根据权利要求10或11所述的装置，其特征在于，所述处理单元还用于：
    若确定所述N个小区中不存在演进的长期演进小区，则将所述N个小区中信号测量值最大的小区作为重选的小区。
  13. 根据权利要求10或11所述的装置，其特征在于，所述处理单元还用于：
    若确定所述N个小区中不存在演进的长期演进小区，则针对工作在除所述目标频点之外的频点上的M个小区，在所述M个小区中存在演进的长期演进小区时，将所述M个小区的演进的长期演进小区中信号测量值高于预设门限、且工作的频点的优先级最高、且信号测量值最大的小区作为重选的小区。
  14. 根据权利要求10或11所述的装置，其特征在于，所述处理单元还用于：
    若确定所述N个小区中不存在信号测量值高于预设门限的演进的长期演进小区，则针对工作在除所述目标频点之外的频点上的M个小区，在所述M个小区中不存在信号测量值高于预设门限的演进的长期演进小区时，将所述M个小区中信号测量值高于预设门限、且信号测量值最大的小区作为重选的小区。
  15. 根据权利要求10至14任一所述的装置，其特征在于，所述收发单元还用于：
    针对所述N个小区中的任意一个小区，接收当前驻留的小区发送的第一小区类型指示信息，或者所述终端接收该邻区发送的第一小区类型指示信息；所述第一小区类型指示信息指示该小区为演进的长期演进小区；
    根据所述第一小区类型指示信息确定该小区是否为演进的长期演进小区。
  16. 根据权利要求10至15任一所述的装置，其特征在于，所述收发单元还用于：
    接收当前驻留的小区发送的第二小区类型指示信息，所述第二小区类型指示信息指示终端当前驻留的小区的邻区为演进的长期演进小区。
  17. 根据权利要求10至16任一所述的装置，其特征在于，所述收发单元还用于：
    接收接入网设备发送的通知消息，所述通知消息指示所述目标频点上存在演进的长期演进小区。
  18. 根据权利要求17所述的装置，其特征在于，所述收发单元还用于：
    确定当前驻留的小区不为演进的长期演进小区。
  19. 一种终端，其特征在于，包括：
    收发机，用于对工作在目标频点上的X个邻区的参考信号进行测量，获得X个信号测量值；
    处理器，用于确定所述X个邻区中存在N个小区的信号测量值满足小区重选条件，则在确定所述N个小区中存在至少一个演进的长期演进小区时，则将所述至少一个演进的长期演进小区中信号测量值最大的小区作为重选的小区。
  20. 根据权利要求19所述的终端，其特征在于，所述处理器还用于：
    若目标频点的小区重选优先级与当前驻留小区的工作频点的小区重选优先级相同，对工作在目标频点上的X个邻区的参考信号进行测量，获得X个信号测量值后：
    对当前驻留小区的参考信号进行测量，获得当前驻留小区的信号测量值；
    确定所述X个邻区以及当前驻留小区中存在N个小区的信号测量值满足小区重选条件，则根据所述N个小区的信号测量值对所述N个小区排序，并确定所述N个小区中存在至少一个演进的长期演进小区时，将所述至少一个演进的长期演进小区中排序最大的小区作为重选的小区。
  21. 根据权利要求19或20所述的终端，其特征在于，所述处理器还用于：
    若确定所述N个小区中不存在演进的长期演进小区，则将所述N个小区中信号测量值最大的小区作为重选的小区。
  22. 根据权利要求19或20所述的终端，其特征在于，所述处理器还用于：
    若确定所述N个小区中不存在演进的长期演进小区，则针对工作在除所述目标频点之外的频点上的M个小区，在所述M个小区中存在演进的长期演进小区时，将所述M个小区的演进的长期演进小区中信号测量值高于预设门限、且工作的频点的优先级最高、且信号测量值最大的小区作为重选的小区。
  23. 根据权利要求19或20所述的终端，其特征在于，所述处理器还用于：
    若确定所述N个小区中不存在信号测量值高于预设门限的演进的长期演进小区，则针对工作在除所述目标频点之外的频点上的M个小区，在所述M个小区中不存在信号测量值高于预设门限的演进的长期演进小区时，将所述M个小区中信号测量值高于预设门限、且信号测量值最大的小区作为重选的小区。
  24. 根据权利要求19至23任一所述的终端，其特征在于，所述收发机还用于：
    针对所述N个小区中的任意一个小区，接收当前驻留的小区发送的第一小区类型指示信息，或者所述终端接收该邻区发送的第一小区类型指示信息；所述第一小区类型指示信息指示该小区为演进的长期演进小区；
    根据所述第一小区类型指示信息确定该小区是否为演进的长期演进小区。
  25. 根据权利要求19至24任一所述的终端，其特征在于，所述收发机还用于：
    接收当前驻留的小区发送的第二小区类型指示信息，所述第二小区类型指示信息指示终端当前驻留的小区的邻区为演进的长期演进小区。
  26. 根据权利要求19至25任一所述的终端，其特征在于，所述收发机还用于：
    接收接入网设备发送的通知消息，所述通知消息指示所述目标频点上存在演进的长期演进小区。
  27. 根据权利要求26所述的终端，其特征在于，所述收发机还用于：
    确定当前驻留的小区不为演进的长期演进小区。
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