WO2016197480A1 - 一种小区重选方法、装置、移动终端及存储介质 - Google Patents

一种小区重选方法、装置、移动终端及存储介质 Download PDF

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Publication number
WO2016197480A1
WO2016197480A1 PCT/CN2015/090092 CN2015090092W WO2016197480A1 WO 2016197480 A1 WO2016197480 A1 WO 2016197480A1 CN 2015090092 W CN2015090092 W CN 2015090092W WO 2016197480 A1 WO2016197480 A1 WO 2016197480A1
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Prior art keywords
cell
csg
csg cell
neighboring
reselection
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PCT/CN2015/090092
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English (en)
French (fr)
Inventor
尤斌
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深圳市中兴微电子技术有限公司
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Publication of WO2016197480A1 publication Critical patent/WO2016197480A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an 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
    • H04W36/0055—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
    • H04W36/04—Reselecting a cell layer in multi-layered cells
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to a cell selection technique in mobile communication, and more particularly to a cell reselection method and apparatus for reselecting from a non-CSG cell to a CSG cell when a closed user group (CSG, Closed Subscriber Group) cell and a non-CSG cell are mixedly deployed.
  • CSG Closed Subscriber Group
  • Mobile terminal and storage medium Mobile terminal and storage medium.
  • the cell can be divided into a macro cell and a CSG cell, wherein the macro cell is also referred to as a non-CSG cell; the macro cell is a cell in which the mobile phone is usually camped, and the macro cell is characterized by a larger
  • the range of wireless coverage, coverage capacity and throughput will be affected by the coverage environment and the number of users in the coverage area.
  • the macro cell mainly provides outdoor coverage, and the wireless signal has a certain loss when it penetrates the building; the CSG cell is public land mobile communication.
  • a part of the network (PLMN, Public Land Mobile Network) is served by a Home NodeB (HNB, Home NodeB)/Home ENodeB.
  • the CSG cell Compared with a macro cell, the CSG cell has a small coverage and flexible services. Selected, with a higher download rate and a more stable signal. However, the mobile terminal camping in the CSG cell is restricted, and only when the ID of the CSG cell stored in the mobile terminal user card matches the ID of the CSG cell to camp on can successfully reside.
  • the CSG cell base station and the macro cell base station are deployed in different manners.
  • the macro base station is completely deployed by the operator, and the home base station as the CSG cell base station is a user indoor device, which can be owned by the user, and is signed by the user after signing with the operator. Deploy, or deploy with the help of an operator.
  • the CSG cell is generally used as a supplement to the outdoor macro cell to enhance indoor coverage, reduce the load of the outdoor macro cell, increase the throughput of the indoor user, and improve the wireless service quality. Therefore, the deployment of the CSG cell is generally in the existing macro cell. Under the cover. Therefore, ideally, such as If the newly deployed CSG cell is to be added to the neighboring cell relationship of the existing macro cell, the existing macro cell neighbor relationship parameter must be adjusted and set. However, since the ownership of the home base station can be attributed to the user, the user can turn on or off the power of the home station as needed, and the user who subscribes to the home base station within the same macro cell coverage frequently changes, and there are unsubscribe users and new users at any time.
  • the coverage topology of the home base station changes very frequently with respect to the macro cell.
  • all the CSG cells in the coverage of the macro cell are to be completely added to the neighbor relationship of the macro cell, and timely Reflecting its changes will result in a continuous and huge workload. Therefore, the operator does not consider the neighbor relationship of the macro cell and the CSG cell in its coverage area when deploying the macro cell.
  • the mobile terminal Since the macro cell does not have the neighboring cell information of the CSG cell, when the mobile terminal reselects from the macro cell to the CSG cell, the mobile terminal cannot perform cell reselection by using the neighbor relationship between the macro cells in the prior art.
  • non-CSG cell there are two main methods for reselecting a CSG cell from a non-CSG cell to a CSG cell from a macro cell (non-CSG cell):
  • the first method is to periodically search for a CSG cell after the mobile terminal camps on the macro cell; however, the timing time of the method is not well grasped, and the time between the two searches is too short, which may result in the search frequency being too frequent. Power consumption, the long time between the two searches can not enter the CSG cell in time;
  • the second method is to modify the protocol to let the network side broadcast the CSG cell; however, this method involves modifying the system information interface protocol, such as the 3GPP 36331 protocol; it is relatively difficult to implement the 3GPP organization modification protocol at present.
  • embodiments of the present invention are expected to provide a cell reselection method, apparatus, and mobile terminal.
  • the terminal and the storage medium can implement automatic fast reselection from the non-CSG cell to the CSG cell without modifying the system information interface.
  • An embodiment of the present invention provides a cell reselection method, where the method includes:
  • the mobile terminal When the mobile terminal camps on the non-CSG cell, determining whether the currently camped non-CSG cell is a neighboring cell of the CSG cell according to the correspondence between each CSG cell and its neighboring cell;
  • CSG cell frequency point detection is performed, and CSG cell reselection is performed according to the detection result.
  • the determining the correspondence between the resident CSG cell and its neighboring area includes:
  • a frequency point Receiving, by the base station, a frequency point, a PLMN ID, a CSG ID, a CSG physical cell ID range, and a frequency point information CarrierFreq and a physical cell ID (physCellId) of each neighboring cell of the currently camped CSG cell;
  • the determining, according to the correspondence between each CSG cell and its neighboring cell, whether the currently camped non-CSG cell is a neighboring cell of the CSG cell includes:
  • the currently camped non-CSG cell is a CSG.
  • the neighborhood of the community is the same as the cell ID and the PLMN ID in the neighbor information of the CSG cell.
  • performing CSG cell frequency point detection includes:
  • the frequency of the CSG cell including the currently camped non-CSG cell in all neighboring cells is detected.
  • the performing CSG cell reselection according to the detection result includes:
  • CSG cell reselection is performed.
  • the embodiment of the present invention further provides a cell reselection device, where the device includes: a relationship determination module, a neighboring cell determination module, and a cell reselection module;
  • the relationship determining module is configured to: when the mobile terminal camps on the CSG cell, determine a correspondence between the resident CSG cell and its neighboring cell, and send the determined correspondence between the CSG cell and its neighboring cell to the neighboring cell determining module. ;
  • the neighboring cell determining module is configured to determine, according to the correspondence between each CSG cell and its neighboring cell, whether the currently camped non-CSG cell is a neighboring cell of the CSG cell, and determine the result, when the mobile terminal camps on the non-CSG cell. Send to the cell reselection module;
  • the cell reselection module is configured to perform CSG cell frequency point detection when determining that the currently camped non-CSG cell is a neighboring cell of the CSG cell, and perform CSG cell reselection according to the detection result.
  • the relationship determining module is configured to:
  • a frequency point Receiving, by the base station, a frequency point, a PLMN ID, a CSG ID, a CSG physical cell ID range, and a frequency point information CarrierFreq and a physical cell ID (physCellId) of each neighboring cell of the currently camped CSG cell;
  • the neighboring area determining module is configured to: determine whether the cell ID and the PLMN ID of the currently camped non-CSG cell are the same as the cell ID and the PLMN ID in the neighboring cell information of the CSG cell;
  • the currently camped non-CSG cell is a neighboring cell of the CSG cell.
  • the cell reselection module is configured to: when determining that the currently camped non-CSG cell is a neighboring cell of the CSG cell, the frequency of the CSG cell that includes the currently camped non-CSG cell in all neighboring cells Test.
  • the cell reselection module is configured to:
  • CSG cell reselection is performed.
  • the embodiment of the invention further provides a mobile terminal, where the mobile terminal includes all the cell reselection devices described above.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores a computer program, which is used to execute a cell reselection method according to an embodiment of the present invention.
  • the cell reselection method and apparatus, the mobile terminal, and the storage medium provided by the embodiment of the present invention determine the correspondence between the resident CSG cell and its neighboring cell when the mobile terminal camps on the CSG cell;
  • the CSG cell determines whether the currently camped non-CSG cell is a neighboring cell of the CSG cell according to the correspondence between each CSG cell and its neighboring cell.
  • performing CSG Cell frequency detection, and based on detection The CSG cell reselection is performed.
  • the mobile terminal saves the neighbor relationship of the CSG cell, when the mobile terminal camps on the non-CSG cell adjacent to the CSG, the mobile terminal can quickly reselect the CSG cell according to the pre-stored information, thereby improving the probability of camping on the CSG cell; Since the CSG cell frequency point detection is enabled only when the mobile terminal camps on the non-CSG cell adjacent to the CSG cell, the power loss caused by frequent detection is avoided, and the implementation of the non-modified system information interface is realized. Automatic fast reselection from CSG cell to CSG cell.
  • FIG. 1 is a schematic flowchart of a cell reselection method according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method for determining a correspondence between a resident CSG cell and its neighboring cell according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of information of a co-frequency neighboring cell of a CSG cell according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of information of an inter-frequency neighboring cell of a CSG cell according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a correspondence relationship information table between a CSG cell and its neighboring cell according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of information of an SIB1 according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a correspondence table of correspondence between a CSG cell and its neighboring cell according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of coverage of a cell according to Embodiment 2 of the present invention.
  • FIG. 9 is a schematic flowchart of a second cell reselection method according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a correspondence information table between a CELL CSG and its neighboring area according to an embodiment of the present invention
  • FIG. 11 is a schematic structural diagram of a cell reselection apparatus according to an embodiment of the present invention.
  • the corresponding relationship between the camped CSG cell and its neighboring cell is determined; when the mobile terminal camps on the non-CSG cell, according to the correspondence between each CSG cell and its neighboring cell Determining whether the currently camping non-CSG cell is a CSG cell The neighboring area; when determining that the currently camping non-CSG cell is a neighboring cell of the CSG cell, performing CSG cell frequency point detection, and performing CSG cell reselection according to the detection result.
  • the neighboring cell relationship of the CSG cell in the macro cell and its coverage area is not considered, and when the CSG cell is deployed under the CSG base station, the current CSG cell to be deployed can be determined.
  • the neighboring cell information of the surrounding macro cell in the embodiment of the present invention, when the mobile terminal camps on the CSG cell, first receives the frequency point, the PLMN ID, the CSG ID, and the CSG physical cell ID of the CSG cell broadcasted by the CSG base station.
  • CSG cell information such as a range and the like, and the same-frequency neighboring cell information and the inter-frequency neighboring cell information, where the CSG neighboring cell information and the inter-frequency neighboring cell information of the CSG cell include the neighboring cells of the CSG cell
  • the mobile terminal When the mobile terminal leaves the CSG cell and camps on the non-CSG cell, it receives the cell ID and the PLMN ID of the current non-CSG cell sent by the current non-CSG cell base station, and determines whether the cell ID and the PLMN ID of the currently camping non-CSG cell are The cell ID and the PLMN ID of any one of the neighboring cells of the pre-stored CSG cells are the same; the cell ID and the PLMN ID of the currently camping non-CSG cell are the same as the cell ID and the PLMN ID in the neighboring cell information of the CSG cell. At the same time, determining that the currently camped non-CSG cell is a neighboring area of one or several CSG cells;
  • the currently camping non-CSG cell is a neighboring cell of one or several CSG cells, detecting, in all neighboring cells, the frequency of the CSG cell that includes the currently camping non-CSG cell; When the CSG cell is detected at the detection frequency, the CSG cell is considered to be present at the current location, and the signal quality of the CSG cell is evaluated. When the signal quality of the CSG cell meets the reselection requirement, CSG cell reselection is performed.
  • the completed invention automatically reselects from the non-CSG cell to the CSG cell without modifying the system information interface.
  • FIG. 1 is a schematic flowchart of a cell reselection method according to an embodiment of the present invention. As shown in FIG. 1, the cell reselection method in this embodiment includes the following steps:
  • Step 101 Determine, when the mobile terminal camps on the CSG cell, a correspondence between the resident CSG cell and its neighboring cell.
  • the mobile terminal since the neighboring cell information about the CSG cell is not configured in the non-CSG cell base station, the mobile terminal first camps on the CSG cell, which is generally implemented by the user manually; or, the mobile terminal It is set to the automatic CSG selection mode, and when the mobile terminal is powered on, the CSG cell with the strongest signal is automatically selected to reside.
  • FIG. 2 is a schematic flowchart of a method for determining a correspondence between a camped CSG cell and its neighboring cell according to an embodiment of the present invention. As shown in FIG. 2, the embodiment of the present invention determines a correspondence between the resident CSG cell and its neighboring cell. The method includes the following steps:
  • Step 101A The mobile terminal camps on the CSG cell.
  • the mobile terminal when the mobile terminal is powered on for the first time, it can be camped into the CSG cell by manual selection or automatic configuration.
  • Step 101B The mobile terminal receives cell information of the currently camped CSG cell broadcasted by the base station, and its intra-frequency neighboring cell information and inter-frequency neighboring cell information.
  • the cell information of the currently camped CSG cell includes a frequency point, a PLMN ID, a CSG ID, and a CSG physical cell ID range of the currently camped CSG cell; and an intra-frequency neighboring cell of the currently camped CSG cell.
  • the information and the inter-frequency neighbor information include the frequency information CarrierFreq and the physical cell ID (physCellId) of each neighboring cell of the currently camped CSG cell;
  • the same-frequency neighboring area information and the inter-frequency neighboring area information structure of the CSG cell are shown in FIG. 3 and FIG. 4, and FIG. 3 is used as the SIB4 information of the 3GPP 36331 protocol, including the same-frequency neighbor of the CSG cell.
  • Figure 4 is the SIB5 information of the 3GPP 36331 protocol, including the inter-frequency neighbor information of the CSG cell; as shown in FIG. 3 and FIG. 4, the CSG cell information of the CSG cell includes the currently camped CSG cell.
  • the inter-frequency neighbor information of the CSG cell includes the frequency information CarrierFreq and the physical cell ID (physCellId) of the neighboring cell of the currently camped CSG cell;
  • the SIB4 information and the SIB5 information are common information in the 3GPP 36331 protocol.
  • the operator When the non-CSG cell is configured, the operator generally configures the SIB4 information and the SIB5 information for each non-CSG cell.
  • Step 101C Establish a correspondence between cell information of the currently camped CSG cell and the same-frequency neighboring cell information and the inter-frequency neighboring cell information.
  • FIG. 5 is a correspondence information table of the CSG cell and its neighboring cell according to the embodiment of the present invention.
  • the information table includes a frequency point, a PLMN ID, a CSG ID, a CSG physical cell ID range, and a frequency point of each neighboring cell of the currently camped CSG cell.
  • Information CarrierFreq and physical cell ID (physCellId);
  • Step 101D Determine, according to the frequency point information CarrierFreq and the physical cell ID (physCellId) of each neighboring cell, the cell ID of each neighboring cell;
  • FIG. 6 is a schematic structural diagram of information of an SIB1 according to an embodiment of the present invention, and the SIB1 information shown in FIG. 6 is information that an operator must configure when configuring a cell;
  • the cell ID of the neighboring cell is determined according to the SIB1 information shown in FIG. 6 and the frequency point information CarrierFreq and the physical cell ID (physCellId) of each neighboring cell;
  • Step 101E Establish a frequency point, a PLMN ID, a CSG ID, a CSG physical cell ID range, and a corresponding relationship between the frequency information CarrierFreq, the physical cell ID (physCellId), and the cell ID of each neighboring CSG cell. And store it;
  • the information table shown in FIG. 5 is updated, and the information table of the correspondence between the updated CSG cell and its neighboring area is as shown in FIG. 7, including the frequency of the currently camped CSG cell, the PLMN ID, the CSG ID, and the CSG.
  • the above process is performed cyclically until the correspondence between the currently camped CSG cell and all neighboring cells is established.
  • Step 102 When the mobile terminal camps on the non-CSG cell, determine whether the currently camped non-CSG cell is a neighboring cell of the CSG cell according to the correspondence between each CSG cell and its neighboring cell.
  • the mobile terminal switches or reselects to a non-CSG cell with better signal quality
  • the mobile terminal When the mobile terminal camps on the non-CSG cell, it is determined whether the cell ID and the PLMN ID of the currently camping non-CSG cell are the same as the cell ID and the PLMN ID of any one of the neighboring cell information of all the CSG cells stored in advance;
  • the currently camped non-CSG cell is the CSG cell. Neighborhood
  • the mobile terminal detects whether the cell ID and the PLMN ID of the currently camping non-CSG cell are in the neighbor cell list NeighCellList of the information table shown in FIG. 7, when detecting the cell ID of the currently camping non-CSG cell and When the PLMN ID is in the neighbor cell list NeighCellList of the information table shown in FIG. 7, it is determined that the currently camped non-CSG cell is a neighboring cell of the CSG cell.
  • Step 103 When it is determined that the currently camped non-CSG cell is a neighboring cell of the CSG cell, perform CSG cell frequency point detection, and perform CSG cell reselection according to the detection result.
  • performing CSG cell frequency point detection includes: when determining that the currently camping non-CSG cell is a neighboring cell of the CSG cell, including in all neighboring cells The frequency of the CSG cell of the currently camped non-CSG cell is detected;
  • the performing CSG cell reselection according to the detection result includes: when the CSG cell is detected at the corresponding detection frequency point, if the CSG cell exists in the current location, the letter to the CSG cell The quality of the number is evaluated; when the signal quality of the CSG cell meets the reselection requirement, CSG cell reselection is performed.
  • the detecting the CSG cell on the corresponding detection frequency point includes: detecting the CSG cell signal on the corresponding detection frequency point, and the physical cell ID of the CSG cell is in the physical cell ID range in the pre-stored information table. , it is considered that the CSG cell is detected.
  • the signal quality of the CSG cell When the signal quality of the CSG cell is evaluated and CSG cell reselection is performed, the signal quality may be evaluated according to signal quality, signal strength, signal to noise ratio, etc., and the reselection requirement may be set according to actual conditions, for example, When the signal strength is higher than the preset threshold, the signal quality of the CSG cell is considered to meet the reselection requirement, and the CSG cell reselection is performed.
  • the method further includes:
  • Step 104 Read system information, determine, according to the system information, whether the current CSG cell is allowed to camp. When the current CSG cell is allowed to camp, camp on the CSG cell, and the process of reselecting from the non-CSG cell to the CSG cell is completed. At this time, the mobile terminal camps on the CSG cell, and returns to step 101.
  • FIG. 8 is a schematic diagram of coverage of a cell according to Embodiment 2 of the present invention. As shown in FIG. 8, each hexagon represents a cell, and the parameters of each cell are as shown in Table 1:
  • Physical cell ID Frequency PLMN ID, CELL ID CSG ID CELL_CSG F2 (P1, C4) Csg1 CELL1 F1 (P1, C1) non-CSG cell CELL2 F2 (P1, C2) non-CSG cell CELL3 F3 (P1, C3) non-CSG cell
  • CELL CSG is a CSG cell, and CELL1, CELL2, and CELL3 are all The non-CSG cell, that is, the macro cell; the frequency of the CELL CSG cell is F2, the PLMN ID is P1, the CELL ID is C4, and the CSG ID is csg1; the frequency of the CELL1 cell is F1, the PLMN ID is P1, and the CELL ID is C1. There is no CSG ID; the CELL2 cell has a frequency of F2, the PLMN ID is P1, the CELL ID is C2, and there is no CSG ID; the CELL3 cell has a frequency of F3, the PLMN ID is P1, the CELL ID is C3, and the CSG ID does not exist. ;
  • Step 901 The mobile terminal is in the first location, and camps on the CELL CSG.
  • Step 902 Receive a frequency, a PLMN ID, a CELL ID, a CSG ID, and a frequency point, a PLMN ID, and a CELL ID of the CELL C and CELL3 cells of the CELL CSG broadcast by the CELL CSG base station;
  • Step 903 Save the information in step 902 to establish a neighbor relationship of the CELL CSG.
  • the frequency of the CELL CSG, the PLMN ID, the CELL ID, the CSG ID, and the storage manner of the frequency, PLMN ID, and CELL ID of the adjacent CELL2 and CELL3 cells are as shown in FIG. 10, and FIG. 10 is A schematic diagram of correspondence information between CELL CSG and its neighboring cell in the embodiment of the present invention; wherein, NeighCellInfo[0] stores cell information (F2, C2) of CELL2, and NeighCellInfo[1] stores cell information of CELL3 (F3, C3);
  • Step 904 The mobile terminal moves to the second location, and reselects to CELL3 according to the measurement result;
  • Step 905 The CELL ID of CELL3 is located in NeighCellInfo[1] of the neighboring area information of CELL CSG, and determines that CELL3 is a neighboring area of CELL CSG;
  • Step 906 Perform detection at frequency F2 of CELL CSG
  • Step 907 CELL CSG is not detected at the F2 frequency, the mobile terminal continues to camp on CELL3, or is reselected in CELL2 and CELL1 according to system information;
  • Step 908 The mobile terminal moves to the third location, and reselects to CELL1 according to the measurement result;
  • Step 909 The CELL ID of CELL1 is not in the neighbor information of any CELL CSG, and does not perform frequency measurement, continues to camp on CELL1, and performs reselection in CELL2 and CELL3 according to system information.
  • Step 910 The mobile terminal moves to the fourth location, and reselects to CELL2 according to the measurement result;
  • Step 911 The CELL ID of CELL2 is located in NeighCellInfo[0] of the neighboring area information of CELL CSG, and determines that CELL2 is a neighboring area of CELL CSG;
  • Step 912 Perform detection on the frequency point F2 of the CELL CSG
  • Step 913 detecting CELL CSG at the F2 frequency point, and measuring the signal quality of the CELL CSG;
  • Step 914 When the CELL CSG signal quality meets the reselection requirement, reselect to the CELL CSG.
  • FIG. 11 is a schematic structural diagram of a cell reselection apparatus according to an embodiment of the present invention. As shown in FIG. 11, the apparatus includes: a relationship determining module 111, a neighboring area determining module 112, a cell reselection module 113; wherein
  • the relationship determining module 111 is configured to: when the mobile terminal camps on the CSG cell, determine a correspondence between the camped CSG cell and its neighboring cell, and send the determined correspondence between the CSG cell and its neighboring cell to the neighboring cell to determine Module
  • the mobile terminal since the neighboring cell information about the CSG cell is not configured in the non-CSG cell base station, the mobile terminal first camps on the CSG cell, which is generally implemented by the user manually; or, the mobile terminal It is set to the automatic CSG selection mode, and when the mobile terminal is powered on, the CSG cell with the strongest signal is automatically selected to reside.
  • the relationship determining module 111 is configured to: receive a frequency point, a PLMN ID, a CSG ID, a CSG physical cell ID range, and each of the currently camped CSG cells of the currently camped CSG cell sent by the base station.
  • Carrier frequency information of the neighboring cell CarrierFreq and physical cell ID (physCellId); carrierFreq and physical cell ID according to frequency information of each neighboring cell (physCellId), determining the cell ID of each neighboring cell; establishing a frequency point, a PLMN ID, a CSG ID, a CSG physical cell ID range, and a frequency point information CarrierFreq and a physical cell ID (physCellId) of each neighboring CSG cell. Correspondence between cell IDs and storage.
  • the neighboring cell determining module 112 is configured to determine, according to the correspondence between each CSG cell and its neighboring cell, whether the currently camping non-CSG cell is a neighboring cell of the CSG cell, and determine, when the mobile terminal camps on the non-CSG cell. The result is sent to the cell reselection module;
  • the neighboring cell determining module 112 is configured to: determine whether the cell ID and the PLMN ID of the currently camped non-CSG cell are the same as the cell ID and the PLMN ID in the neighboring cell information of the CSG cell; When the cell ID and the PLMN ID of the non-CSG cell are the same as the cell ID and the PLMN ID in the neighbor information of the CSG cell, it is determined that the currently camped non-CSG cell is a neighboring cell of the CSG cell.
  • the mobile terminal detects whether the cell ID and the PLMN ID of the currently camping non-CSG cell are in the neighbor cell list NeighCellList of the information table shown in FIG. 7, when detecting the cell ID of the currently camping non-CSG cell and When the PLMN ID is in the neighbor cell list NeighCellList of the information table shown in FIG. 7, it is determined that the currently camped non-CSG cell is a neighboring cell of the CSG cell;
  • the cell reselection module 113 is configured to perform CSG cell frequency point detection when determining that the currently camped non-CSG cell is a neighboring cell of the CSG cell, and perform CSG cell reselection according to the detection result;
  • the cell reselection module 113 is configured to: when determining that the currently camped non-CSG cell is a neighboring cell of the CSG cell, the CSG cell that includes the currently camped non-CSG cell in all neighboring cells The frequency is detected. When the CSG cell is detected at the corresponding detection frequency point, the CSG cell is considered to be present in the current location, and the signal quality of the CSG cell is evaluated; when the signal quality of the CSG cell meets the reselection requirement, the CSG cell is performed. Re-election.
  • the detecting the CSG cell on the corresponding detection frequency point includes: performing corresponding detection When the CSG cell signal is detected on the frequency point, and the physical cell ID of the CSG cell is within the physical cell ID range in the pre-stored information table, it is considered that the CSG cell is detected.
  • the signal quality of the CSG cell When the signal quality of the CSG cell is evaluated and CSG cell reselection is performed, the signal quality may be evaluated according to signal quality, signal strength, signal to noise ratio, etc., and the reselection requirement may be set according to actual conditions, for example, When the signal strength is higher than the preset threshold, the signal quality of the CSG cell is considered to meet the reselection requirement, and the CSG cell reselection is performed.
  • the cell reselection module 113 is further configured to: read system information, and determine, according to system information, whether the current CSG cell is allowed to camp. When the current CSG cell allows camping, the process of re-selecting from the non-CSG cell to the CSG cell is completed.
  • the relationship determining module 111 re-determines the correspondence between the resident CSG cell and its neighboring cell.
  • the embodiment of the present invention further provides a mobile terminal, where the mobile terminal includes any one of the cell reselection devices involved in FIG.
  • the implementation functions of the processing modules in the cell reselection apparatus shown in FIG. 11 can be implemented by a processor, and can also be implemented by a specific logic circuit; wherein the processor can be a mobile terminal or a server.
  • the processor can be a central processing unit (CPU), a microprocessor (MPU), a digital signal processor (DSP), or a field programmable gate array (FPGA).
  • the cell reselection method is implemented in the form of a software function module and sold or used as a standalone product, it may also be stored in a computer readable storage medium.
  • the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions.
  • a computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, and a read only memory (Read Various media such as Only Memory, ROM, disk or CD-ROM that can store program code.
  • Read Various media such as Only Memory, ROM, disk or CD-ROM that can store program code.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores a computer program, and the computer program is used to execute the foregoing cell reselection method in the embodiment of the present invention.

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Abstract

本发明提供了一种小区重选方法，包括：当移动终端驻留CSG小区时，确定所述驻留的CSG小区与其邻区的对应关系；当移动终端驻留非CSG小区时，根据各CSG小区与其邻区的对应关系，确定当前驻留的非CSG小区是否为CSG小区的邻区；当确定当前驻留的非CSG小区为CSG小区的邻区时，进行CSG小区频点检测，并根据检测结果进行CSG小区重选。本发明还提供了一种小区重选装置及移动终端及存储介质。

Description

一种小区重选方法、装置、移动终端及存储介质 技术领域
本发明涉及移动通信中的小区选择技术，尤其涉及一种闭合用户群(CSG，Closed Subscriber Group)小区和非CSG小区混合部署时从非CSG小区重选到CSG小区的小区重选方法、装置、移动终端及存储介质。
背景技术
在目前的移动通信网络系统中，小区可以被分为宏小区和CSG小区，其中，宏小区也称为非CSG小区；宏小区即为平时手机驻留的小区，宏小区的特点是具有较大范围的无线覆盖范围，覆盖能力和吞吐量会受到覆盖环境和覆盖区域内用户数的影响，宏小区主要提供室外覆盖，无线信号在穿透建筑物时有一定损耗；CSG小区是公共陆地移动通信网络(PLMN，Public Land Mobile Network)的一部分，由家庭节点B(HNB，Home NodeB)/家庭演进节点B(HeNB，Home eNodeB)服务，与宏小区相比，CSG小区覆盖范围小，业务灵活可选，具有较高的下载速率以及更为稳定的信号等。但是，移动终端在CSG小区驻留是受限制的，只有当移动终端用户卡存有的CSG小区的ID与要驻留的CSG小区的ID匹配才能成功驻留。
目前，CSG小区基站和宏小区基站的部署方式是不同的，宏基站完全由运营商部署，而作为CSG小区基站的家庭基站为用户室内设备，可以由用户拥有，在和运营商签约后由用户自行部署，或者在运营商的帮助下进行部署。
CSG小区一般会作为室外宏小区的补充，用于增强室内覆盖，减轻室外宏小区的负荷，增加室内用户的吞吐量，提升无线服务质量，因此，CSG小区的部署一般是在已有宏小区的覆盖下进行的。因此，理想状态下，如 果要将新部署的CSG小区加入到现有宏小区的邻区关系中，必须要对现有宏小区邻区关系参数进行调整设置。但是，由于家庭基站的所有权可以归属用户，用户可以根据需要开启或者关闭家庭站的电源，并且同一宏小区覆盖内签约使用家庭基站的用户会经常变化，随时会有退订用户，也有新增用户；因此，家庭基站的覆盖拓扑相对于宏小区来说变动非常频繁，在这种情况下，如果要完全将宏小区覆盖范围内所有的CSG小区都加入到宏小区的邻区关系中，并及时体现其变化，会导致持续并巨大的工作量，故此，运营商在部署宏小区的时候暂时没有考虑宏小区和其覆盖区域内的CSG小区的邻区关系。
由于宏小区没有CSG小区的邻区信息，因此，移动终端从宏小区重选到CSG小区时，无法按照现有技术中宏小区之间利用邻区关系进行小区重选的方式进行。
现有技术中，CSG小区和非CSG小区混合部署时从宏小区(非CSG小区)重选到CSG小区的方法主要有以下两种：
第一种方法是在移动终端驻留到宏小区时后，定时搜索CSG小区；但是，这种方法的定时时间不好掌握，两次搜索之间的时间太短会导致搜索次数太频繁，比较耗电，两次搜索之间的时间长则不能及时的进入到CSG小区；
第二种方法是修改协议，让网侧广播CSG小区；但是，这种方法涉及修改系统信息接口协议，如3GPP 36331协议；目前推动3GPP组织修改协议实现起来相对困难。
因此，目前需要一种快速、高效的方法，实现CSG小区和非CSG小区混合部署时，移动终端从非CSG小区重选到CSG小区。
发明内容
有鉴于此，本发明实施例期望提供一种小区重选方法、装置、移动终 端及存储介质，能够在不修改系统信息接口的前提下，实现从非CSG小区到CSG小区的自动快速重选。
为达到上述目的，本发明实施例的技术方案是这样实现的：
本发明实施例提供了一种小区重选方法，所述方法包括：
当移动终端驻留CSG小区时，确定所述驻留的CSG小区与其邻区的对应关系；
当移动终端驻留非CSG小区时，根据各CSG小区与其邻区的对应关系，确定当前驻留的非CSG小区是否为CSG小区的邻区；
当确定当前驻留的非CSG小区为CSG小区的邻区时，进行CSG小区频点检测，并根据检测结果进行CSG小区重选。
上述方案中，所述确定所述驻留的CSG小区与其邻区的对应关系包括：
接收基站发送的当前驻留的CSG小区的频点、PLMN ID、CSG ID、CSG物理小区ID范围、以及当前驻留的CSG小区的各邻区的频点信息CarrierFreq和物理小区ID(physCellId)；
根据各邻区的频点信息CarrierFreq和物理小区ID(physCellId)，确定各邻区的小区ID；
建立当前驻留的CSG小区的频点、PLMN ID、CSG ID、CSG物理小区ID范围以及各邻区的频点信息CarrierFreq、物理小区ID(physCellId)、小区ID之间的对应关系，并进行存储。
上述方案中，所述根据各CSG小区与其邻区的对应关系，确定当前驻留的非CSG小区是否为CSG小区的邻区包括：
判断当前驻留的非CSG小区的小区ID和PLMN ID是否与CSG小区的邻区信息中的小区ID和PLMN ID相同；
当前驻留的非CSG小区的小区ID和PLMN ID与CSG小区的邻区信息中的小区ID和PLMN ID相同时，确定当前驻留的非CSG小区为CSG 小区的邻区。
上述方案中，所述当确定当前驻留的非CSG小区为CSG小区的邻区时，进行CSG小区频点检测包括：
确定当前驻留的非CSG小区为CSG小区的邻区时，对所有邻区中包含所述当前驻留的非CSG小区的CSG小区的频点进行检测。
上述方案中，所述根据检测结果进行CSG小区重选包括：
当在对应的检测频点上检测到CSG小区时，认为当前位置存在CSG小区，对所述CSG小区的信号质量进行测评；
当所述CSG小区的信号质量符合重选要求时，进行CSG小区重选。
本发明实施例还提供了一种小区重选装置，所述装置包括：关系确定模块、邻区确定模块、小区重选模块；其中，
所述关系确定模块，配置为当移动终端驻留CSG小区时，确定所述驻留的CSG小区与其邻区的对应关系，并将确定的CSG小区与其邻区的对应关系发送到邻区确定模块；
所述邻区确定模块，配置为当移动终端驻留非CSG小区时，根据各CSG小区与其邻区的对应关系，确定当前驻留的非CSG小区是否为CSG小区的邻区，并将确定结果发送到小区重选模块；
所述小区重选模块，配置为当确定当前驻留的非CSG小区为CSG小区的邻区时，进行CSG小区频点检测，并根据检测结果进行CSG小区重选。
上述方案中，所述关系确定模块配置为：
接收基站发送的当前驻留的CSG小区的频点、PLMN ID、CSG ID、CSG物理小区ID范围、以及当前驻留的CSG小区的各邻区的频点信息CarrierFreq和物理小区ID(physCellId)；
根据各邻区的频点信息CarrierFreq和物理小区ID(physCellId)，确定各邻区的小区ID；
建立当前驻留的CSG小区的频点、PLMN ID、CSG ID、CSG物理小区ID范围以及各邻区的频点信息CarrierFreq、物理小区ID(physCellId)、小区ID之间的对应关系，并进行存储。
上述方案中，所述邻区确定模块配置为：判断当前驻留的非CSG小区的小区ID和PLMN ID是否与CSG小区的邻区信息中的小区ID和PLMN ID相同；
当前驻留的非CSG小区的小区ID和PLMN ID与CSG小区的邻区信息中的小区ID和PLMN ID相同时，确定当前驻留的非CSG小区为CSG小区的邻区。
上述方案中，所述小区重选模块配置为：确定当前驻留的非CSG小区为CSG小区的邻区时，对所有邻区中包含所述当前驻留的非CSG小区的CSG小区的频点进行检测。
上述方案中，所述小区重选模块配置为：
当在对应的检测频点上检测到CSG小区时，认为当前位置存在CSG小区，对所述CSG小区的信号质量进行测评；
当所述CSG小区的信号质量符合重选要求时，进行CSG小区重选。
本发明实施例还提供了一种移动终端，，所述移动终端包括上述所有小区重选装置。
本发明实施例还提供了一种计算机存储介质，所述计算机存储介质存储有计算机程序，该计算机程序用于执行本发明实施例小区重选方法。
本发明实施例所提供的小区重选方法、装置、移动终端及存储介质，当移动终端驻留CSG小区时，确定所述驻留的CSG小区与其邻区的对应关系；当移动终端驻留非CSG小区时，根据各CSG小区与其邻区的对应关系，确定当前驻留的非CSG小区是否为CSG小区的邻区；当确定当前驻留的非CSG小区为CSG小区的邻区时，进行CSG小区频点检测，并根据检测结 果进行CSG小区重选。由于移动终端保存了CSG小区的邻区关系，当移动终端驻留到CSG相邻的非CSG小区时能够根据预存的信息快速的重选到CSG小区，提高了驻留到CSG小区的概率；另外，由于只有在移动终端驻留到CSG小区相邻的非CSG小区时才开启CSG小区频点检测，避免了频繁检测导致的电量损耗，实现了在不修改系统信息接口的前提下，实现从非CSG小区到CSG小区的自动快速重选。
附图说明
图1为本发明实施例一小区重选方法流程示意图；
图2为本发明实施例确定所述驻留的CSG小区与其邻区的对应关系的方法流程示意图；
图3为本发明实施例CSG小区的同频邻区信息结构示意图；
图4为本发明实施例CSG小区的异频邻区信息结构示意图；
图5为本发明实施例CSG小区与其邻区的对应关系信息表示意图；
图6为本发明实施例SIB1信息结构示意图；
图7为本发明实施例更新后的CSG小区与其邻区的对应关系信息表示意图；
图8为本发明实施例二小区覆盖范围示意图；
图9为本发明实施例二小区重选方法流程示意图；
图10为本发明实施例CELL CSG与其邻区的对应关系信息表示意图；
图11为本发明实施例小区重选装置结构示意图。
具体实施方式
本发明实施例中，当移动终端驻留CSG小区时，确定所述驻留的CSG小区与其邻区的对应关系；当移动终端驻留非CSG小区时，根据各CSG小区与其邻区的对应关系，确定当前驻留的非CSG小区是否为CSG小区的 邻区；当确定当前驻留的非CSG小区为CSG小区的邻区时，进行CSG小区频点检测，并根据检测结果进行CSG小区重选。
本发明实施例中，由于运营商在部署宏小区时，没有考虑宏小区及其覆盖区域内的CSG小区的邻区关系，而在CSG基站下部署CSG小区时，能够确定当前所要部署的CSG小区与周围的宏小区的邻区信息，因此，本发明实施例中，当移动终端驻留CSG小区时，先接收CSG基站广播的包括CSG小区的频点、PLMN ID、CSG ID、CSG物理小区ID范围等信息在内的CSG小区信息，以及同频邻区信息和异频邻区信息；其中，所述CSG小区的同频邻区信息和异频邻区信息中包括CSG小区的各邻区的频点信息CarrierFreq和物理小区ID(physCellId)；并且，CSG小区的PLMN ID与其相邻的非CSG小区的PLMN ID相同。
当移动终端离开CSG小区，驻留到非CSG小区时，接收当前非CSG小区基站发送的当前非CSG小区的小区ID和PLMN ID，判断当前驻留的非CSG小区的小区ID和PLMN ID是否与预先存储的所有CSG小区的邻区中任意一个邻区的小区ID和PLMN ID相同；当前驻留的非CSG小区的小区ID和PLMN ID与CSG小区的邻区信息中的小区ID和PLMN ID相同时，确定当前驻留的非CSG小区为某一个或几个CSG小区的邻区；
在确定当前驻留的非CSG小区为某一个或几个CSG小区的邻区时，对所有的邻区中包含所述当前驻留的非CSG小区的CSG小区的频点进行检测；当在对应的检测频点上检测到CSG小区时，认为当前位置存在CSG小区，对所述CSG小区的信号质量进行测评；当所述CSG小区的信号质量符合重选要求时，进行CSG小区重选。
如此，完成发明在不修改系统信息接口的前提下，实现从非CSG小区自动重选到CSG小区。
下面结合附图及实施例，对本发明实施例技术方案的实施作详细描述。 图1为本发明实施例一小区重选方法流程示意图，如图1所示，本实施例小区重选方法包括以下步骤：
步骤101：当移动终端驻留CSG小区时，确定所述驻留的CSG小区与其邻区的对应关系；
本发明实施例中，由于非CSG小区基站中并没有配置关于CSG小区的邻区信息，因此，移动终端第一次驻留CSG小区，一般由用户通过手动选择的方式来实现；或者，移动终端设置成自动CSG选择方式，当移动终端开机后，自动选择信号最强的CSG小区驻留。
图2为本发明实施例确定所述驻留的CSG小区与其邻区的对应关系的方法流程示意图，如图2所示，本发明实施例确定所述驻留的CSG小区与其邻区的对应关系的方法包括以下步骤：
步骤101A：移动终端驻留CSG小区；
本步骤中，当移动终端首次开机时，可通过手动选择或自动配置，实现驻留到CSG小区；
步骤101B：移动终端接收基站广播的当前驻留的CSG小区的小区信息及其同频邻区信息和异频邻区信息；
其中，所述当前驻留的CSG小区的小区信息中包括当前驻留的CSG小区的频点、PLMN ID、CSG ID、CSG物理小区ID范围；所述当前驻留的CSG小区的同频邻区信息和异频邻区信息包括当前驻留的CSG小区的各邻区的频点信息CarrierFreq和物理小区ID(physCellId)；
本发明实施例中，所述CSG小区的同频邻区信息和异频邻区信息结构示意图如图3和图4所示，图3作为3GPP 36331协议的SIB4信息，包括CSG小区的同频邻区信息；图4作为3GPP 36331协议的SIB5信息，包括CSG小区的异频邻区信息；如图3和图4所示，所述CSG小区的同频邻区信息包括当前驻留的CSG小区的各邻区的物理小区ID(physCellId)；所述 CSG小区的异频邻区信息包括当前驻留的CSG小区的邻区的频点信息CarrierFreq和物理小区ID(physCellId)；
这里，SIB4信息和SIB5信息均为3GPP 36331协议中的常用信息，运营商在配置非CSG小区时，一般都会为每个非CSG小区配置SIB4信息和SIB5信息。
步骤101C：建立当前驻留的CSG小区的小区信息与同频邻区信息和异频邻区信息的对应关系；
本步骤中，将当前驻留的CSG小区的小区信息及同频邻区信息和异频邻区信息以特定的方式进行存储；图5为本发明实施例CSG小区与其邻区的对应关系信息表示意图，如图5所示，所述信息表中包括当前驻留的CSG小区的频点、PLMN ID、CSG ID、CSG物理小区ID范围、以及当前驻留的CSG小区的各邻区的频点信息CarrierFreq和物理小区ID(physCellId)；
步骤101D：根据各邻区的频点信息CarrierFreq和物理小区ID(physCellId)，确定各邻区的小区ID；
图6为本发明实施例SIB1信息结构示意图，图6所示SIB1信息为运营商在配置小区时必须配置的信息；
本步骤中，根据图6所示SIB1信息以及各邻区的频点信息CarrierFreq和物理小区ID(physCellId)，确定邻区的小区ID；
步骤101E：建立当前驻留的CSG小区的频点、PLMN ID、CSG ID、CSG物理小区ID范围以及各邻区的频点信息CarrierFreq、物理小区ID(physCellId)、小区ID之间的对应关系，并进行存储；
本步骤中，更新图5为所示信息表，更新后的CSG小区与其邻区的对应关系信息表如图7所示，包括当前驻留的CSG小区的频点、PLMN ID、CSG ID、CSG物理小区ID范围以及各邻区的频点信息CarrierFreq、物理小区ID(physCellId)、小区ID。
至此，完成当前驻留的CSG小区与一个邻区的邻区关系建立过程。
循环执行上述过程，直至建立当前驻留的CSG小区与所有邻区的对应关系。
步骤102：当移动终端驻留非CSG小区时，根据各CSG小区与其邻区的对应关系，确定当前驻留的非CSG小区是否为CSG小区的邻区；
本发明实施例中，随着移动终端的移动，移动终端切换或重选到一个信号质量更好的非CSG小区上；
当移动终端驻留非CSG小区时，判断当前驻留的非CSG小区的小区ID和PLMN ID是否与预先存储的所有CSG小区的邻区信息中任意一个邻区的小区ID和PLMN ID相同；
当前驻留的非CSG小区的小区ID和PLMN ID与预先存储的所有CSG小区的邻区信息中任意一个邻区的小区ID和PLMN ID相同时，确定当前驻留的非CSG小区为CSG小区的邻区；
在一实施例中，移动终端检测当前驻留非CSG小区的小区ID和PLMN ID是否在图7所示的信息表的相邻小区列表NeighCellList中，当检测当前驻留非CSG小区的小区ID和PLMN ID在图7所示的信息表的相邻小区列表NeighCellList中时，确定当前驻留的非CSG小区为CSG小区的邻区
步骤103：当确定当前驻留的非CSG小区为CSG小区的邻区时，进行CSG小区频点检测，并根据检测结果进行CSG小区重选。
所述当确定当前驻留的非CSG小区为CSG小区的邻区时，进行CSG小区频点检测包括：当确定当前驻留的非CSG小区为CSG小区的邻区时，对所有邻区中包含所述当前驻留的非CSG小区的CSG小区的频点进行检测；
所述根据检测结果进行CSG小区重选包括：当在对应的检测频点上检测到CSG小区时，认为当前位置存在CSG小区，则对所述CSG小区的信 号质量进行测评；当所述CSG小区的信号质量符合重选要求时，进行CSG小区重选。
其中，所述在对应的检测频点上检测到CSG小区包括：在对应的检测频点上检测到CSG小区信号，并且该CSG小区的物理小区ID处于预存的信息表中的物理小区ID范围内，则认为检测到CSG小区。
对所述CSG小区的信号质量进行测评以及进行CSG小区重选时，可以根据信号质量，信号强度、信噪比等指标对信号质量进行测评，重选要求可根据实际情况进行设定，例如，当信号强度高于预设阈值时，认为CSG小区的信号质量符合重选要求，进行CSG小区重选。
本发明实施例中，在对CSG小区重选、移动终端驻留到CSG小区之后，所述方法还包括：
步骤104：读取系统信息，根据系统信息判断当前CSG小区是否允许驻留，当前CSG小区允许驻留时，驻留到该CSG小区，从非CSG小区重选到CSG小区的过程完成。此时，移动终端驻留在CSG小区，返回步骤101。
下面结合实际场景，对本发明实施例所述小区重选方法进行说明。图8为本发明实施例二小区覆盖范围示意图，如图8所示，每个六边形表示一个小区，每个小区的参数如表1所示：
物理小区ID 频点 PLMN ID,CELL ID CSG ID
CELL_CSG F2 (P1,C4) csg1
CELL1 F1 (P1,C1) 非CSG小区
CELL2 F2 (P1,C2) 非CSG小区
CELL3 F3 (P1,C3) 非CSG小区
表1
如表1所述，CELL CSG为CSG小区，CELL1、CELL2、CELL3均为 非CSG小区，即宏小区；CELL CSG小区的频点为F2，PLMN ID为P1，CELL ID为C4，CSG ID为csg1；CELL1小区的频点为F1，PLMN ID为P1，CELL ID为C1，不存在CSG ID；CELL2小区的频点为F2，PLMN ID为P1，CELL ID为C2，不存在CSG ID；CELL3小区的频点为F3，PLMN ID为P1，CELL ID为C3，不存在CSG ID；
在图8所示小区覆盖范围的场景下，本发明实施例二小区重选方法流程示意图如图9所示，包括以下步骤：
步骤901：移动终端处于第一位置，驻留CELL CSG；
步骤902：接收CELL CSG基站广播的CELL CSG的频点、PLMN ID、CELL ID、CSG ID以及其相邻的CELL2和CELL3小区的频点、PLMN ID、CELL ID；
步骤903：将步骤902中的信息进行保存，建立CELL CSG的邻区关系；
本发明实施例中，CELL CSG的频点、PLMN ID、CELL ID、CSG ID以及其相邻的CELL2和CELL3小区的频点、PLMN ID、CELL ID的保存方式如图10所示，图10为本发明实施例CELL CSG与其邻区的对应关系信息表示意图；其中，NeighCellInfo[0]中保存CELL2的小区信息(F2，C2),NeighCellInfo[1]中保存CELL3的小区信息(F3，C3)；
步骤904：移动终端移动到第二位置，根据测量结果重选到CELL3；
步骤905：CELL3的CELL ID位于CELL CSG的邻区信息的NeighCellInfo[1]中，确定CELL3为CELL CSG的邻区；
步骤906：在CELL CSG的频点F2进行检测；
步骤907：在F2频点未检测到CELL CSG，移动终端继续驻留在CELL3，或并根据系统信息在CELL2和CELL1中进行重选；
步骤908：移动终端移动到第三位置，根据测量结果重选到CELL1；
步骤909：CELL1的CELL ID不在任何一个CELL CSG的邻区信息中，不进行频点测量，继续驻留在CELL1，并根据系统信息在CELL2和CELL3中进行重选。
步骤910：移动终端移动到第四位置，根据测量结果重选到CELL2；
步骤911：CELL2的CELL ID位于CELL CSG的邻区信息的NeighCellInfo[0]中，确定CELL2为CELL CSG的邻区；
步骤912：在CELL CSG的频点F2上进行检测；
步骤913：在F2频点检测到CELL CSG，对CELL CSG的信号质量进行测评；
步骤914：CELL CSG信号质量符合重选要求时，重选到CELL CSG。
如此，完成移动终端自动从非CSG小区重选到CSG小区的过程。
本发明实施例还提供了一种小区重选装置，图11为本发明实施例小区重选装置结构示意图，如图11所示，所述装置包括：关系确定模块111、邻区确定模块112、小区重选模块113；其中，
所述关系确定模块111，配置为当移动终端驻留CSG小区时，确定所述驻留的CSG小区与其邻区的对应关系，并将确定的CSG小区与其邻区的对应关系发送到邻区确定模块；
本发明实施例中，由于非CSG小区基站中并没有配置关于CSG小区的邻区信息，因此，移动终端第一次驻留CSG小区，一般由用户通过手动选择的方式来实现；或者，移动终端设置成自动CSG选择方式，当移动终端开机后，自动选择信号最强的CSG小区驻留。
本发明实施例中，所述关系确定模块111配置为：接收基站发送的当前驻留的CSG小区的频点、PLMN ID、CSG ID、CSG物理小区ID范围、以及当前驻留的CSG小区的各邻区的频点信息CarrierFreq和物理小区ID(physCellId)；根据各邻区的频点信息CarrierFreq和物理小区ID (physCellId)，确定各邻区的小区ID；建立当前驻留的CSG小区的频点、PLMN ID、CSG ID、CSG物理小区ID范围以及各邻区的频点信息CarrierFreq、物理小区ID(physCellId)、小区ID之间的对应关系，并进行存储。
所述邻区确定模块112，配置为当移动终端驻留非CSG小区时，根据各CSG小区与其邻区的对应关系，确定当前驻留的非CSG小区是否为CSG小区的邻区，并将确定结果发送到小区重选模块；
本发明实施例中，述邻区确定模块112配置为：判断当前驻留的非CSG小区的小区ID和PLMN ID是否与CSG小区的邻区信息中的小区ID和PLMN ID相同；当前驻留的非CSG小区的小区ID和PLMN ID与CSG小区的邻区信息中的小区ID和PLMN ID相同时，确定当前驻留的非CSG小区为CSG小区的邻区。
在一实施例中，移动终端检测当前驻留非CSG小区的小区ID和PLMN ID是否在图7所示的信息表的相邻小区列表NeighCellList中，当检测当前驻留非CSG小区的小区ID和PLMN ID在图7所示的信息表的相邻小区列表NeighCellList中时，确定当前驻留的非CSG小区为CSG小区的邻区；
所述小区重选模块113，配置为当确定当前驻留的非CSG小区为CSG小区的邻区时，进行CSG小区频点检测，并根据检测结果进行CSG小区重选；
本发明实施例中，所述小区重选模块113配置为：确定当前驻留的非CSG小区为CSG小区的邻区时，对所有邻区中包含所述当前驻留的非CSG小区的CSG小区的频点进行检测。当在对应的检测频点上检测到CSG小区时，认为当前位置存在CSG小区，则对所述CSG小区的信号质量进行测评；当所述CSG小区的信号质量符合重选要求时，进行CSG小区重选。
其中，所述在对应的检测频点上检测到CSG小区包括：在对应的检测 频点上检测到CSG小区信号，并且该CSG小区的物理小区ID处于预存的信息表中的物理小区ID范围内，则认为检测到CSG小区。
对所述CSG小区的信号质量进行测评以及进行CSG小区重选时，可以根据信号质量，信号强度、信噪比等指标对信号质量进行测评，重选要求可根据实际情况进行设定，例如，当信号强度高于预设阈值时，认为CSG小区的信号质量符合重选要求，进行CSG小区重选。
本发明实施例中，在对CSG小区重选、移动终端驻留到CSG小区之后，所述小区重选模块113还配置为：读取系统信息，根据系统信息判断当前CSG小区是否允许驻留，当前CSG小区允许驻留时，驻留到该CSG小区，从非CSG小区重选到CSG小区的过程完成。关系确定模块111重新确定所述驻留的CSG小区与其邻区的对应关系。
本发明实施例还提供了一种移动终端，所述移动终端包括图11所涉及的任意一种所述小区重选装置。
图11中所示的小区重选装置中的各处理模块的实现功能，都可以通过处理器来实现，当然也可通过具体的逻辑电路实现；其中所述处理器可以是移动终端或服务器上的处理器，在实际应用中，处理器可以为中央处理器(CPU)、微处理器(MPU)、数字信号处理器(DSP)或现场可编程门阵列(FPGA)等。
本发明实施例中，如果以软件功能模块的形式实现上述小区重选方法，并作为独立的产品销售或使用时，也可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明实施例的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机、服务器、或者网络设备等)执行本发明各个实施例所述方法的全部或部分。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read  Only Memory，ROM)、磁碟或者光盘等各种可以存储程序代码的介质。这样，本发明实施例不限制于任何特定的硬件和软件结合。
相应地，本发明实施例还提供一种计算机存储介质，该计算机存储介质中存储有计算机程序，该计算机程序用于执行本发明实施例的上述小区重选方法。
以上所述仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。

Claims (12)

  1. 一种小区重选方法，所述方法包括：
    当移动终端驻留闭合用户群CSG小区时，确定所述驻留的CSG小区与其邻区的对应关系；
    当移动终端驻留非CSG小区时，根据各CSG小区与其邻区的对应关系，确定当前驻留的非CSG小区是否为CSG小区的邻区；
    当确定当前驻留的非CSG小区为CSG小区的邻区时，进行CSG小区频点检测，并根据检测结果进行CSG小区重选。
  2. 根据权利要求1所述方法，其中，所述确定所述驻留的CSG小区与其邻区的对应关系包括：
    接收基站发送的当前驻留的CSG小区的频点、公共陆地移动通信网络PLMN ID、CSG ID、CSG物理小区ID范围、以及当前驻留的CSG小区的各邻区的频点信息CarrierFreq和物理小区ID(physCellId)；
    根据各邻区的频点信息CarrierFreq和物理小区ID(physCellId)，确定各邻区的小区ID；
    建立当前驻留的CSG小区的频点、PLMN ID、CSG ID、CSG物理小区ID范围以及各邻区的频点信息CarrierFreq、物理小区ID(physCellId)、小区ID之间的对应关系，并进行存储。
  3. 根据权利要求1所述方法，其中，所述根据各CSG小区与其邻区的对应关系，确定当前驻留的非CSG小区是否为CSG小区的邻区包括：
    判断当前驻留的非CSG小区的小区ID和PLMN ID是否与CSG小区的邻区信息中的小区ID和PLMN ID相同；
    当前驻留的非CSG小区的小区ID和PLMN ID与CSG小区的邻区信息中的小区ID和PLMN ID相同时，确定当前驻留的非CSG小区为CSG小区的邻区。
  4. 根据权利要求1所述方法，其中，所述当确定当前驻留的非CSG小区为CSG小区的邻区时，进行CSG小区频点检测包括：
    确定当前驻留的非CSG小区为CSG小区的邻区时，对所有邻区中包含所述当前驻留的非CSG小区的CSG小区的频点进行检测。
  5. 根据权利要求4所述方法，其中，所述根据检测结果进行CSG小区重选包括：
    当在对应的检测频点上检测到CSG小区时，认为当前位置存在CSG小区，对所述CSG小区的信号质量进行测评；
    当所述CSG小区的信号质量符合重选要求时，进行CSG小区重选。
  6. 一种小区重选装置，所述装置包括：关系确定模块、邻区确定模块、小区重选模块；其中，
    所述关系确定模块，配置为当移动终端驻留CSG小区时，确定所述驻留的CSG小区与其邻区的对应关系，并将确定的CSG小区与其邻区的对应关系发送到邻区确定模块；
    所述邻区确定模块，配置为当移动终端驻留非CSG小区时，根据各CSG小区与其邻区的对应关系，确定当前驻留的非CSG小区是否为CSG小区的邻区，并将确定结果发送到小区重选模块；
    所述小区重选模块，配置为当确定当前驻留的非CSG小区为CSG小区的邻区时，进行CSG小区频点检测，并根据检测结果进行CSG小区重选。
  7. 根据权利要求6所述装置，其中，所述关系确定模块配置为：
    接收基站发送的当前驻留的CSG小区的频点、PLMN ID、CSG ID、CSG物理小区ID范围、以及当前驻留的CSG小区的各邻区的频点信息CarrierFreq和物理小区ID(physCellId)；
    根据各邻区的频点信息CarrierFreq和物理小区ID(physCellId)，确定各邻区的小区ID；
    建立当前驻留的CSG小区的频点、PLMN ID、CSG ID、CSG物理小区ID范围以及各邻区的频点信息CarrierFreq、物理小区ID(physCellId)、小区ID之间的对应关系，并进行存储。
  8. 根据权利要求6所述装置，其中，所述邻区确定模块配置为：判断当前驻留的非CSG小区的小区ID和PLMN ID是否与CSG小区的邻区信息中的小区ID和PLMN ID相同；
    当前驻留的非CSG小区的小区ID和PLMN ID与CSG小区的邻区信息中的小区ID和PLMN ID相同时，确定当前驻留的非CSG小区为CSG小区的邻区。
  9. 根据权利要求6所述装置，其中，所述小区重选模块配置为：确定当前驻留的非CSG小区为CSG小区的邻区时，对所有邻区中包含所述当前驻留的非CSG小区的CSG小区的频点进行检测。
  10. 根据权利要求9所述装置，其中，所述小区重选模块配置为：
    当在对应的检测频点上检测到CSG小区时，认为当前位置存在CSG小区，对所述CSG小区的信号质量进行测评；
    当所述CSG小区的信号质量符合重选要求时，进行CSG小区重选。
  11. 一种移动终端，所述移动终端包括权利要求6至10任一项所述小区重选装置。
  12. 一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，该计算机可执行指令用于执行权利要求1至5任一项所述的小区重选方法。
PCT/CN2015/090092 2015-06-12 2015-09-21 一种小区重选方法、装置、移动终端及存储介质 WO2016197480A1 (zh)

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