WO2010017761A1 - 小区重选的方法和终端 - Google Patents

小区重选的方法和终端 Download PDF

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Publication number
WO2010017761A1
WO2010017761A1 PCT/CN2009/073187 CN2009073187W WO2010017761A1 WO 2010017761 A1 WO2010017761 A1 WO 2010017761A1 CN 2009073187 W CN2009073187 W CN 2009073187W WO 2010017761 A1 WO2010017761 A1 WO 2010017761A1
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WO
WIPO (PCT)
Prior art keywords
cell
terminal
frequency
inter
home
Prior art date
Application number
PCT/CN2009/073187
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English (en)
French (fr)
Inventor
约翰·约翰松
郑潇潇
柴丽
麦克尔·罗伯茨
杨旭东
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2010017761A1 publication Critical patent/WO2010017761A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength

Definitions

  • the present invention relates to the field of mobile communications, and in particular, to a method and a terminal for cell reselection. Background technique
  • HNB Home NodeB, Home Node
  • Home Cell Access Po int
  • Pr iva te Network or Pr iva te Cel l (private cell)
  • restricted networks at certain frequency levels.
  • HNB is also called femto cel l (also known as 3G access point), which can be seamlessly connected with the original network equipment of the operator.
  • HNB can make full use of the user's existing broadband access resources to provide users with FMC (mobile and fixed network convergence) services.
  • FMC mobile and fixed network convergence
  • the large amount of mobile services of HNB is absorbed by the indoor home base station, which can greatly reduce the number of macro cells of the operator, save the equipment investment cost and maintenance cost for the operator, and is a relatively economical indoor signal coverage technology.
  • Closed Acces s Closed home cell
  • Open Acces s open home cell
  • Closed Acces s is also called CSG (Closed Subscr iber Group)
  • CSG Click Subscr iber Group
  • the user can normally camp and use the service within the CSG; users who are not subscribed and are not added to the CSG by the owner of the CSG cannot normally reside in the CSG and cannot use the service.
  • CSG users include owner and guest t (guest).
  • guest guest
  • Open Acces s all users authenticated by the operator can enjoy the services of the community, and Open Acces s can meet the needs of the macro cell coverage missing points.
  • radio waves during CSG operation may cause downlink interference of HNBs to non-CSG (non-CSG) terminals in a macro cell, and in a macro cell
  • the radio waves when the non-CSG terminal is working also cause uplink/downlink interference to the terminals in the HNB.
  • the embodiment of the present invention provides a method and a terminal for cell reselection.
  • the technical solution is as follows:
  • the embodiment of the present invention provides a method for cell reselection, where the method includes: the terminal performs measurement on a neighboring cell according to a measurement condition in a currently located macro cell; and according to the measured signal quality of the neighboring cell The information, the cell reselection parameter of the measured neighboring cell is set; or the cell reselection parameter sent by the network side through the broadcast message is received; or the cell reselection parameter sent by the network side by using dedicated signaling is received;
  • the embodiment of the present invention further provides a method for identifying a cell type, where the method specifically includes:
  • the cell type is identified by the cell physical identity or the type identifier of the cell.
  • the embodiment of the present invention further provides a terminal, where the terminal includes:
  • a measuring module configured to measure neighboring cells according to measurement conditions in a currently located macro cell the amount
  • a setting module configured to set, according to signal quality information of a neighboring cell measured by the measurement module, a cell reselection parameter of the measured neighboring cell
  • a selection module configured to select, according to a cell reselection parameter set by the setting module, a cell with a mobility level higher than a mobility level of the macro cell where the terminal is located, from a neighboring cell measured by the measurement module.
  • an embodiment of the present invention further provides a terminal, including:
  • a measuring module configured to measure, in a macro cell where the terminal is currently located, a neighboring cell according to the measurement condition
  • a second determining module configured to: when a cell in the neighboring cell measured by the measuring module is a closed home cell, and the terminal is a closed home terminal, according to the measured signal quality information of the neighboring cell, a closed home cell that is determined to meet a preset condition in the closed home cell; a reselection module, configured to determine whether a closed home cell with a terminal subscription exists in the closed home cell determined by the second determining module, and if yes, according to Sign the closed signal quality threshold of the home cell to determine whether to move into the contracted closed home cell.
  • the terminal can be moved to a cell with a high mobility level, and the interference received by the terminal after being moved in is reduced. Compared with the prior art, the mutual interference between the terminal and the HNB cell is reduced.
  • FIG. 1 is a simplified flowchart of a method for cell reselection according to Embodiment 1 of the present invention
  • FIG. 2 is a simplified flowchart of a method for cell reselection according to Embodiment 2 of the present invention
  • FIG. 3 is a simplified flowchart of a method for cell reselection according to Embodiment 3 of the present invention.
  • FIG. 4 is a simplified flowchart of a method for identifying a cell type according to Embodiment 4 of the present invention
  • FIG. 5 is a schematic diagram of a simplified structure of a terminal according to Embodiment 5 of the present invention.
  • FIG. 6 is a schematic diagram of a simplified structure of a terminal according to Embodiment 6 of the present invention. detailed description
  • a macro cell an open home cell, a closed home cell (CSG cell), and a semi-open home cell (Semi-Open Acces s Ce ll).
  • the open home cell allows all terminals to access, including the CSG terminal (ie, the semi-open home cell is in the white list of the terminal) and the non-CSG terminal (ie, the semi-open home cell is not in the white list of the terminal, or The terminal does not have a whitelist, or the terminal does not support the home cell. That is, the open home cell has no restrictions on the type of the terminal, and any type of terminal can access the open home cell.
  • a closed home cell allows CSG terminal access, while a non-CSG terminal cannot access.
  • the semi-open home cell allows CSG terminals and pa s serby terminals (passenger terminals, also known as passers-by terminals) to access, that is, for semi-open home cells, CSG terminals and pa s serby terminals are legitimate users, and CSG terminals are more than pa
  • the s serby terminal preferentially accesses the semi-open home cell, and the CSG terminal can enjoy the service in the semi-open home cell, and the CSG terminal enjoys the service priority with respect to the pa s serby terminal, and the pa s serby terminal is semi-open.
  • the behavior in the home cell is limited, including but not limited to: 1) pa s serby terminal is allowed to reside in a semi-open home cell but cannot enjoy the service; 2) pa s serby terminal is allowed to reside in the semi-open home community Limited and limited services, including but not limited to: services with limited service quality, services with limited service types, and services with limited number of service types.
  • the CSG terminal is preferentially accessed, that is, if the semi-open home cell is in the white list of a terminal, the priority of the terminal is generally higher than that of other terminals, and the terminal is based on
  • the information is calculated according to different weights, and the terminal is sorted according to the result, and the information of the terminal includes at least one of a priority, a service priority, a service type, and a service rate of the terminal in the cell; According to the above calculation results, the order is sorted from high to low. The service performance of the pre-ordered terminal is higher, and the service performance of the sorted terminal is lower. Therefore, the UE with the lowest order can be switched to other cells, or down.
  • the weight of the priority of the terminal in the cell may be set to be the highest. If it is a handover between different systems, before selecting a handover UE, it should be considered whether the target system supports the service of the UE to be switched.
  • a semi-open home cell can provide 200MB of bandwidth, but only provides 100MB of bandwidth for the pa s serby terminal; a semi-open home cell can provide services such as making calls and surfing the Internet, but only provides Internet access services to the pa s serby terminal;
  • the home community can provide 10 services, but only provides 6 services to the pa s serby terminal.
  • the semi-open home cell and the closed home cell in the embodiment of the present invention each have a CSG identifier, such as a CSG ID.
  • FIG. 1 is a simplified flowchart of a method for cell reselection according to Embodiment 1 of the present invention. As shown in FIG. 1, the method includes:
  • Step 101 The terminal performs measurement on the neighboring cell according to the measurement condition in the currently located macro cell.
  • the measurement condition may be preset locally or may be obtained from other places, and is not specifically limited in the embodiment of the present invention.
  • Step 102 Set, according to the measured signal quality information of the neighboring cell, a measured cell reselection parameter of the neighboring cell.
  • the measured cell reselection parameters of the neighboring cells may be set according to a preset principle according to the measured signal quality information of the neighboring cells.
  • Step 103 Select, from the measured neighboring cells, a cell whose mobility level is higher than that of the currently located macro cell according to the set cell reselection parameter.
  • the terminal sets a cell reselection parameter according to the measured cell signal quality information, and selects a cell with a high mobility level according to the set cell reselection parameter, and the interference received by the terminal after being moved in is reduced, compared with the prior art, Mutual interference between the terminal and the HNB cell.
  • FIG. 2 is a simplified flowchart of a method for cell reselection according to Embodiment 2 of the present invention.
  • a cell currently located by a terminal is a macro cell, and a neighboring cell does not have a CSG cell of the terminal, as shown in FIG. 2
  • the method specifically includes:
  • Step 201 The terminal receives the broadcast message of the macro cell in the currently located macro cell, where the broadcast message usually carries multiple parameters, including but not limited to: an ID of the macro cell, a priority of a frequency band to which the macro cell belongs, The measurement threshold of the macro cell, the neighbor cell information, and the parameters of the cell reselection, etc., wherein the measurement threshold includes the same frequency threshold used when measuring the same frequency cell, and the different frequency threshold and measurement used when measuring the different frequency cell.
  • the different system threshold used in the different system cell the same frequency cell refers to the same frequency as the current macro cell, the inter-frequency cell refers to a cell different from the current macro cell frequency, and the different system refers to a different wireless network system. .
  • Step 202 The terminal performs measurement on the same-frequency neighboring cell according to the acquired intra-frequency measurement condition in the current macro cell, and obtains signal quality information of the same-frequency neighboring cell.
  • the neighboring cell in this embodiment includes: at least one of a macro cell and a home base station cell, where the home base station cell includes: at least one of an open home cell, a semi-open home cell, and a closed home cell.
  • the terminal may initiate measurement on the neighboring cell when the signal quality of the current macro cell is degraded. For example, when the terminal detects that the signal quality of the current macro cell reaches the preset intra-frequency measurement threshold, the terminal initiates the adjacent Measurement of the cell. This embodiment does not preclude the terminal from initiating measurement of a neighboring cell when other conditions are met.
  • Step 203 The terminal performs type identification on the measured intra-frequency neighboring cells.
  • the process for the terminal to perform type identification on the measured intra-frequency neighboring cells may be specifically as follows:
  • the terminal identifies the measured type of the same-frequency neighboring cell by using the physical identifier of the cell or the cell type identifier.
  • the physical identity of the cell may be obtained by the terminal during the pilot process.
  • the network side reserves physical identifiers of different segments for different types of cells, and the reserved segments of the physical identifiers can identify the type of the cells.
  • the network side may segment the physical identifier, each segment Corresponding to different types of cells, each segment may include multiple physical identifiers, for example, ID1 to ID10 are open home cells, ID11 to ID20 are semi-open home cells, and ID21 to ID30 are CSG cells, when the terminal acquires in the pilot process.
  • the cell type identifier may be carried in a message of a broadcast channel or may be transmitted through an Iur/X2 interface.
  • the Iur interface is an interface used by the RNC (Radio Network Controller) to perform signaling and data interaction with other RNCs in a UTRA (Universa l Telecommunica telecommunication Radio Acces s) system;
  • UTRA Universal l Telecommunica telecommunication Radio Acces s
  • the eNB base station
  • the eNB base station
  • X2 interface similar to the Iur port.
  • Step 204 When it is determined according to the identified intra-frequency neighboring cell type that the measured cells in the same-frequency neighboring cell satisfy the preset cell reselection condition are both intra-frequency and semi-open home cells, the terminal obtains different The frequency measurement condition measures adjacent inter-frequency/different system cells to obtain signal quality information of the inter-frequency/different system cell.
  • the preset cell reselection condition refers to the existing R criterion, that is, the neighboring cell in which the selected signal quality information is prioritized, and the signal quality of the prior neighboring cell is stronger than that of other neighboring cells. .
  • none of the cells in the cell that meet the preset cell reselection condition are intra-frequency macro cells, and all cells that satisfy the cell reselection condition are all-frequency semi-open home cells.
  • the above-mentioned inter-frequency measurement conditions are various, including but not limited to: measuring adjacent cells that are not lower than a preset inter-frequency/heterogeneous threshold, and the like.
  • the terminal can obtain the inter-frequency measurement condition from the received broadcast message. For example, if the terminal acquires an inter-frequency threshold of 10 dB according to the broadcast message of the current macro cell, the terminal measures the adjacent inter-frequency cell with a signal quality of not less than 10 dB.
  • Step 205 The terminal sets a cell reselection parameter for the measured adjacent inter-frequency/different system cell according to the measured signal quality information of the adjacent inter-frequency/different system cell.
  • the cell reselection parameter includes It is not limited to: the priority of the frequency band to which the cell belongs, the threshold of the frequency band to which the cell belongs, the offset of the cell (Qoff set) / hysteresis (Qhys t ), and the like.
  • the process of setting a cell reselection parameter is as follows: Determining, according to the measured signal quality information of the neighboring cell, a cell that satisfies a preset cell reselection condition in the measured neighboring cell, and identifying a cell type that satisfies the cell reselection condition, and identifying the cell type
  • Determining, according to the measured signal quality information of the neighboring cell, a cell that satisfies a preset cell reselection condition in the measured neighboring cell, and identifying a cell type that satisfies the cell reselection condition, and identifying the cell type The process is the same as that described in 203, and will not be described here;
  • the macro cell reselection parameter of the inter-frequency/extra system is set to be higher than the mobility level of the current frequency band/system of the terminal.
  • the measured adjacent cell may have a different frequency/different system semi-open home cell, or there may be no inter-frequency/different system semi-open home cell, even if there is an inter-frequency/different system semi-open home cell, due to the above
  • the inter-frequency/extra system macro cell satisfies the cell reselection condition, that is, the signal quality is ranked first, and the inter-frequency/different system semi-open home cell is ranked later, so the inter-frequency/different system macro that satisfies the cell reselection condition is prioritized.
  • the cell that is, the mobility level of the macro cell in which the inter-frequency/different system is set is higher than the mobility level of the current frequency band/system in which the terminal is located;
  • the semi-open home cell reselection parameter of the inter-frequency/different system is set to be not higher than the current frequency band/system of the terminal.
  • the terminal is
  • the interference in the inter-frequency/extra-system macro cell with weak signal quality is less than that in the inter-frequency/different system semi-open home cell with strong signal quality, so the semi-open cell in the current frequency band is prioritized, so The moving level of the macro cell of the different frequency/different system is not higher than the moving level of the current frequency band/system of the terminal.
  • the cell reselection condition in this step is the same as the cell reselection condition described in 204.
  • the migrating level in this embodiment refers to whether the terminal is easy to move into one cell.
  • setting a cell to be moved in a high level may include: setting a priority of a frequency band to which the cell belongs, setting a threshold of a frequency band to which the cell belongs, or setting a lower offset/hysteresis of the cell than a current terminal camping cell, etc. Wait.
  • setting the cell reselection parameter to the shifting level of the inter-frequency/different system is higher than the shifting level of the current frequency band/system of the terminal, including: setting the priority of the inter-frequency/different system higher than the current frequency band/system of the terminal.
  • Priority or set the threshold of the inter-frequency/different system signal quality to be lower than the threshold of the current frequency/system signal quality of the terminal; or set the cell offset/hysteresis of the inter-frequency/different system to be lower than the current frequency band of the terminal.
  • Cell offset/hysteresis Set the cell reselection parameter to the shifting level of the inter-frequency/different system is not higher than the shifting level of the eight-system currently in the terminal, including: setting the priority of the inter-frequency/different system is not higher than the current system of the terminal.
  • the manner in which the terminal locally sets the cell reselection parameter by the terminal may also be replaced by the following manner:
  • the terminal receives the cell reselection parameter sent by the network side, or the terminal receives the broadcast message carrying the cell reselection parameter sent by the network side, or the terminal receives the cell reselection parameter delivered by the dedicated signaling, where the terminal receives
  • the obtained cell reselection parameters include: at least one of a priority of a frequency band to which the cell belongs, a threshold of a frequency band to which the cell belongs, and an offset/hysteresis of the cell.
  • the system may further send multiple sets of candidate cell reselection parameters, and each set of cell reselection parameters includes: a priority of the frequency band to which the cell belongs, and a threshold of the frequency band to which the cell belongs.
  • the UE selects a corresponding set of cell reselection parameters in the multiple sets of cell reselection parameters according to specific conditions. For example, when the UE needs to set the corresponding cell to a higher mobility level, the cell with the higher mobility level is selected to be reselected. Parameters, and vice versa.
  • the foregoing dedicated signaling may also directly send the cell reselection parameters for the current situation of the UE to the UE.
  • the terminal when the terminal receives the cell reselection parameter sent by the network side, the terminal may select, according to the received cell reselection parameter, the mobility of the mobile cell from the measured neighboring cell.
  • a high-level cell when the terminal receives the cell reselection parameter sent by the network side, the terminal may select, according to the received cell reselection parameter, the mobility of the mobile cell from the measured neighboring cell. A high-level cell.
  • Step 206 The terminal selects, according to the set cell reselection parameter, a cell whose mobility level is higher than that of the macro cell where the terminal is currently located in the measured neighboring cell.
  • the frequency band with the highest priority is selected, and the frequency is selected. Selecting the cell with the highest signal quality value in the segment;
  • select the frequency band with the lowest threshold select the cell with the highest signal quality value in this frequency band, or select the cell with the lowest offset/hysteresis.
  • Step 207 The terminal determines whether to move to the selected cell according to the threshold of the selected cell. Specifically, the terminal may determine whether the measured selected cell signal quality information is not lower than a threshold of the selected cell, and if yes, move to the selected cell, otherwise, does not move into the selected cell, that is, the terminal continues to camp. Stay in the current macro cell.
  • the terminal After the terminal moves into the selected cell, it receives the broadcast message of the cell, and the broadcast message carries various parameters, including cell reselection parameters, and the terminal can update the locally saved related information according to the parameters in the broadcast message.
  • the terminal initiates a process of moving into another cell according to the updated information, thereby causing a ping-pong phenomenon (the terminal frequently switches between different cells), and further,
  • the terminal may further preset a delay time, and after the terminal moves into the selected cell, after the preset delay time arrives, the locally saved cell reselection parameter information is updated according to the received cell broadcast message.
  • the delay time can be set by a timer, and the locally saved information is updated after the timer expires.
  • the terminal resides on the macro cell 1, and the macro cell 1 belongs to the frequency band fl, and the neighboring cells on the fl have: semi-open home cells 11, 12 and 13; macro cells 2 and 3; cells adjacent to the terminal in the frequency band f2 There are: semi-open residential cells 21, 22 and 23, macro cells 4 and 5.
  • the terminal starts measurement of the neighboring cell, and when the neighboring cell of the same frequency is measured, that is, the neighboring cell of the terminal is found, the preset is satisfied.
  • the same frequency cell of the cell reselection condition is a semi-open home cell
  • the measurement of the adjacent inter-frequency/different system cell is continued, that is, the signal quality of the cell in the frequency band f 2 is measured.
  • the priority of the frequency band f 2 may be set to be higher than the priority of the current frequency band f 1 or the threshold of the frequency band f 2 may be set. It is lower than the threshold of the current frequency band fl, or the Qoff set/Qhys t of the macro cell 4 or 5 is set. It is lower than macro cell 1, making it easier for the terminal to switch to macro cell 4 or 5 on f 2 .
  • the priority setting of f2 is lower than the priority of fl. Or the same, or setting the threshold of the frequency band f 2 higher or the same as the threshold of the current frequency band f 1 , or setting the Qoff set/Qhys t of the semi-open home cells 21 , 22 and 23 higher than the macro cell 1 , It makes it difficult for the terminal to switch to the macro cell 4 or 5 on f 2 .
  • the home base station cell on the network side can pass the Iu/S1 signaling, and the Iu/S1 is the interface between the radio access network and the core network, to obtain the subscription attribute information of the terminal to distinguish the type of the terminal, or according to the pre-stored Terminal type information to distinguish the type of terminal.
  • the terminal type information pre-stored by the home base station cell includes two types: a host and a guest. For a terminal that does not appear in the pre-stored terminal type information, the home base station cell identifies it as a transit terminal.
  • the non-CSG terminal when the inter-frequency/extra system macro cell that satisfies the cell reselection condition is measured, the non-CSG terminal can move to the inter-frequency/differential system macro cell according to the set cell reselection parameter, thereby reducing the HNB cell pair macro.
  • the downlink interference of the non-CSG terminal in the cell can also reduce the downlink or uplink interference of the non-CSG terminal in the macro cell to the HNB terminal, which provides convenience for the operator to deploy the network.
  • FIG. 3 is a simplified flowchart of a method for cell reselection according to Embodiment 3 of the present invention.
  • the terminal is a CSG terminal
  • the current cell is a macro cell.
  • the method specifically includes:
  • Step 301 The terminal receives the broadcast message of the macro cell in the currently located macro cell, and performs measurement on the neighboring cell according to the preset measurement condition to obtain signal quality information of the neighboring cell.
  • the process of the terminal measuring the neighboring cell is the same as that described in Embodiment 2, and is not described here.
  • Step 302 When a cell in the measured neighboring cell is a CSG cell, determine, according to the measured signal quality information of the neighboring cell, a CSG cell that meets a preset condition in the measured CSG cell.
  • the preset condition is: The signal quality information of the cell is not lower than the preset signal quality threshold, and the value is used as a basis for screening the CSG cell, and is usually set on the network side. If the measured CSG cell signal quality information is not lower than the preset signal quality threshold, indicating that the measured CSG cell signal quality is strong, the measured CSG cell may be selected; if the measured CSG cell signal quality information is used Below the preset signal quality threshold, indicating that the measured CSG cell signal quality is poor, the measured CGS cell is not selected.
  • the terminal may select one or more CGS cells.
  • the terminal obtains the preset signal quality threshold, and may be in any of a plurality of manners, including but not limited to any one of the following manners: reading from a broadcast message of a cell currently located by the terminal, and transmitting dedicated signaling from the network side. , as in the RRC release message, read and read from the information saved by the terminal's own SIM (Customer Identity) card.
  • SIM Customer Identity
  • Step 303 Determine whether there is a CSG cell that is subscribed by the terminal in the determined CSG cell.
  • the identifier of the CSG cell is obtained, and the identifier of the CSG cell that is stored by the terminal itself is determined. The same, if yes, execute 304; otherwise, execute 306.
  • the identifier of the CSG cell is specifically a CSG ID.
  • the terminal may read the CSG ID of the cell from the broadcast message of the determined CSG cell.
  • a CSG ID (such as a whitelist) of a CSG cell that is contracted with the CSG is usually stored in the CSG terminal.
  • the terminal compares the read CSG ID with the CSG ID saved by itself. If the CSG ID is consistent, the terminal indicates that the terminal is the CSG cell.
  • the signing terminal otherwise, the terminal is not the signing terminal of the CSG cell.
  • Step 304 The terminal determines whether the signal quality information of the CSG cell is not lower than the signal quality threshold of the CGS cell, and if yes, performs 305; otherwise, performs 306.
  • Each CSG cell has its own signal quality threshold.
  • the terminal can move to The CSG cell is configured to mitigate the situation that the current macro cell is subjected to strong interference; if the signal quality information of the CSG cell measured by the terminal is lower than the signal quality threshold of the CSG cell, indicating that the signal quality of the CSG cell is poor, The terminal does not move to the CSG cell.
  • the terminal obtains the signal quality threshold of the CSG cell in multiple manners, including but not limited to any one of the following ways:
  • the terminal reads from the broadcast message of the CSG cell, and the terminal reads from the broadcast message of the currently camped cell.
  • the terminal reads from the saved path record information.
  • the path record information refers to related information of a previously visited cell recorded by the terminal, such as a cell ID, a signal quality threshold, a cell reselection parameter, and the like.
  • the terminal has previously visited a certain CSG cell, the path record is recorded.
  • the information of the CSG cell is stored in the information, and the terminal can read the ID of the CSG cell from the path record information. If the terminal has not visited the CSG cell before, the terminal may acquire the signal quality threshold of the subscribed CSG cell by reading the broadcast message of the current cell or the broadcast message of the subscribed CSG cell.
  • Step 305 The terminal moves into the contracted CSG cell.
  • Step 306 The terminal continues to camp on the current macro cell.
  • the broadcast message of the subscribed closed home cell is received, and the locally saved cell reselection parameter is updated according to the broadcast message after the preset delay time, thereby avoiding Ping pong phenomenon occurs.
  • the CSG terminal first measures the CSG cell that meets the preset signal quality threshold, and then finds the CSG cell that the CSG terminal subscribes to, and then determines whether the signal quality of the CSG cell that is subscribed to the CSG is not lower than the signal quality of the cell.
  • the threshold if yes, moves the terminal into the subscribed CSG cell, so that the terminal can enjoy the service in the subscribed CSG cell, and reduces the interference received by the terminal compared with the terminal staying in the macro cell.
  • FIG. 4 is a simplified flowchart of a method for identifying a cell type according to Embodiment 4 of the present invention. As shown in FIG. 4, the method includes:
  • Step 401 Obtain a physical identifier of a cell or a type identifier of a cell.
  • Step 402 Identify a cell type by using a physical identifier of the cell or a type identifier of the cell.
  • FIG. 5 is a schematic diagram of a simplified structure of a terminal according to Embodiment 5 of the present invention, as shown in FIG. As shown, the terminal includes:
  • the measuring module 501 is configured to measure, in the currently located macro cell, the neighboring cell according to the measurement condition;
  • the setting module 502 is configured to set the measured cell reselection parameter of the neighboring cell according to the signal quality information of the neighboring cell measured by the measurement module 501.
  • the selecting module 503 is configured to select, according to the cell reselection parameter set by the setting module 502, a cell with a higher mobility level than that of the macro cell where the terminal is located, from the neighboring cells measured by the measurement module 501.
  • the measurement condition may be preset locally or may be obtained from other places, and is not specifically limited in the embodiment of the present invention.
  • the foregoing measurement module 501 specifically includes:
  • An intra-frequency measurement unit configured to measure a neighboring cell with the same frequency as the macro cell according to the acquired intra-frequency measurement condition
  • a first identifying unit configured to identify a type of an intra-frequency neighboring cell measured by the same-frequency measuring unit
  • an inter-frequency measuring unit configured to: when the first identifying unit is configured, the same-frequency adjacent to the same-frequency measuring unit In the small area, when the cells satisfying the cell reselection condition are all semi-open home cells, the inter-frequency neighboring cells of the macro cell are measured according to the acquired inter-frequency measurement conditions.
  • the cell reselection condition may be preset locally or may be obtained from another place, which is not specifically limited in the embodiment of the present invention.
  • the above setting module 502 may specifically include:
  • a second identifying unit configured to determine, according to the signal quality information of the neighboring cell measured by the measuring module 501, a cell that satisfies the cell reselection condition in the measured neighboring cell, and identify a cell type that satisfies the cell reselection condition;
  • a first setting unit configured to: when the second identifying unit identifies that the cell that meets the cell reselection condition is an inter-frequency/extra system macro cell, set the cell reselection parameter to be higher than the inter-frequency/different system The shifting level of the current frequency band/system in which the terminal is located; a second setting unit, configured to: when the second identifying unit identifies that the cell that meets the cell reselection condition is an inter-frequency/different system semi-open home cell, set the cell reselection parameter to a shifting level of the inter-frequency/different system It is not higher than the shifting level of the current frequency band/system of the terminal.
  • first setting unit may specifically include any of the following subunits or a combination of any subunits:
  • a first priority setting subunit configured to set a priority of the inter-frequency/different system higher than a priority of a current frequency band/system of the terminal
  • a first threshold setting subunit configured to set a threshold of the inter-frequency/extra system signal quality to be lower than a threshold of a frequency/system signal quality of the terminal
  • the first offset/hysteresis setting subunit is configured to set the cell offset/hysteresis of the inter-frequency/extra system to be lower than the cell offset/hysteresis of the frequency band/system in which the terminal is located.
  • the foregoing second setting unit may specifically include any combination of the following sub-units or any sub-units: a second priority setting sub-unit, configured to set the priority of the inter-frequency/different system to be no higher than a current frequency band of the terminal/ Priority of the system;
  • a second threshold setting subunit configured to set a threshold of the inter-frequency/extra system signal quality to be not lower than a threshold of a frequency/system signal quality of the terminal;
  • the second offset/hysteresis setting subunit is configured to set the cell offset/hysteresis of the inter-frequency/extra system not lower than the cell offset/hysteresis of the frequency band/system in which the terminal is located.
  • the foregoing selection module 503 may specifically include any combination of the following units or any combination of the following units: a priority selection unit, configured to select the highest priority among the neighboring cells measured by the measurement module 501 according to the cell reselection parameter set by the setting module 502. Frequency band in which the cell with the highest signal quality value is selected;
  • a threshold selection unit configured to select, according to the cell reselection parameter set by the setting module 502, a frequency band with the lowest threshold among the cells measured by the measurement module 501, and select a cell with the highest signal quality value in the frequency band;
  • An offset/hysteresis selection unit for selecting a cell reselection parameter according to the setting module 502 Among the cells measured by the measurement module 501, the cell with the lowest offset/hysteresis is selected.
  • the foregoing terminal may further include:
  • a first determining module configured to determine whether to move to a cell selected by the selecting module 503;
  • an update module configured to: after the determining module determines to move in and the terminal moves to the selected cell, receive the broadcast message of the selected cell, and after the preset delay time, update the locally saved cell reselection parameter according to the broadcast message.
  • the non-CSG terminal when the inter-frequency/extra system macro cell that satisfies the cell reselection condition is measured, the non-CSG terminal can move to the inter-frequency/differential system macro cell according to the set cell reselection parameter, thereby reducing the HNB cell pair macro.
  • the downlink interference of the non-CSG terminal in the cell can also reduce the downlink or uplink interference of the non-CSG terminal in the macro cell to the HNB terminal, which provides convenience for the operator to deploy the network.
  • FIG. 6 is a schematic diagram of a simplified structure of a terminal according to Embodiment 6 of the present invention.
  • the terminal includes:
  • the measuring module 601 is configured to measure, in the macro cell where the terminal is currently located, the neighboring cell according to the measurement condition;
  • the second determining module 602 is configured to: when the cell in the neighboring cell measured by the measuring module 601 is a closed home cell, and the terminal is a closed home terminal, according to the measured signal quality information of the neighboring cell,
  • the closed home cell is determined to be a closed home cell that meets the preset condition;
  • the reselection module 603 is configured to determine whether there is a closed home cell with the terminal subscription in the closed home cell determined by the second determining module 602, and if yes, according to the signing The signal quality threshold of the closed home cell is closed, and it is determined whether to move into the contracted closed home cell.
  • the measurement condition may be preset locally or may be obtained from other places, and is not specifically limited in the embodiment of the present invention.
  • the foregoing reselection module 603 specifically includes:
  • a determining unit configured to obtain the identifier of the determined closed home cell, and determine whether the acquired identifier is the same as the identifier of the contracted closed home cell stored by the terminal;
  • the reselection unit is configured to determine, according to the signal quality threshold of the closed closed home cell, whether to move into the contracted closed home cell when the result of the judgment unit is YES.
  • the foregoing terminal may further include:
  • an update module configured to: after the terminal determines and moves to the contracted closed home cell, receives a broadcast message of the closed home cell, and updates the locally saved cell reselection parameter according to the broadcast message after the preset delay time.
  • the CSG terminal when performing cell reselection, the CSG terminal first measures the neighboring cell according to the measurement condition by using the measurement module, and then, after finding the signing cell of the CSG terminal, determines whether the signal quality of the signing cell is not low.
  • the signal quality threshold of the cell if yes, the terminal is moved into the subscribed CSG cell, so that the terminal can enjoy the service in the subscribed CSG cell, and the interference received by the terminal is reduced compared with the terminal staying in the macro cell.
  • the storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), or a Random Acces s Memory (RAM).

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Description

小区重选的方法和终端 本申请要求于 2008 年 08 月 11 日提交中国专利局、 申请号为 200810210236. 2 , 发明名称为 "小区重选的方法和终端" 以及 2009年 04月 10日提交中国专利局、 申请号为 200910133924. 8、发明名称为 "小区重选的 方法和终端" 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
本发明涉及移动通信领域， 特别涉及一种小区重选的方法和终端。 背景技术
随着移动通信系统的发展， 用户的需求也越来越多样化， 为了适应这种 需求， 通信系统的设备也出现多样化， 包括： 近年来出现的家庭室内覆盖和 企业级的内部覆盖基站， 以及一些其它受限网络， 例如， HNB ( Home NodeB, 家庭基站）小区、 Home Cel l (家庭小区 )、 Acces s Po int (接入点 )、 Pr iva te Network (私有网络）或 Pr iva te Cel l (私有小区） ， 以及某些特定频率层 的受限网络等。
其中， HNB又称为 femto cel l (毫微微蜂窝网基站， 又称为 3G接入点）， 可以与运营商的原有网络设备无缝连接。 HNB 可以充分利用用户已有的宽带 接入资源， 为用户提供 FMC (移动和固网融合）业务。 通过 HNB大量的移动 业务被室内家用基站所吸收， 可以大大降低运营商宏蜂窝的数量， 为运营商 节约设备投资费用和维护费用 , 是比较经济的室内信号覆盖技术。
现有技术中， HNB分为 Closed Acces s (封闭家用小区）和 Open Acces s (开放家用小区）两种。其中， Closed Acces s又称为 CSG ( Closed Subscr iber Group, 封闭签约用户组）， 如果用户签约到 CSG内或者被 CSG的主人添加到 CSG 内， 则该用户可以在 CSG 内正常驻留以及使用业务； 而没有签约以及没 有被 CSG的主人添加到 CSG内的用户则无法正常在 CSG内驻留， 也无法使用 业务。 CSG用户包括 owner (主人）和 gues t (客人） 。 在 Open Acces s内， 由运营商认证的所有用户都可以享受该小区的服务， Open Acces s 可以满足 宏小区覆盖遗漏点的需求。
在实现本发明的过程中， 发明人发现上述现有技术至少存在以下缺点： CSG运行时的无线电波会引起 HNB对宏小区中的非 CSG ( non-CSG )终端 的下行干扰， 而且宏小区中的非 CSG终端工作时的无线电波也会给对 HNB 中 的终端造成上行 /下行干扰。 发明内容
为了减少宏小区内的终端和 HNB小区之间的相互干扰， 本发明实施例提 供了一种小区重选的方法和终端。 所述技术方案如下：
一方面， 本发明实施例提供了一种小区重选的方法， 所述方法包括： 终端在当前所在的宏小区中根据测量条件对相邻小区进行测量； 根据测量出的相邻小区的信号质量信息， 设置所述测量出的相邻小区的 小区重选参数； 或者， 接收网络侧通过广播消息下发的小区重选参数； 或者， 接收网络侧通过专用信令下发的小区重选参数；
根据所述小区重选参数从所述测量出的相邻小区中， 选择移入级别比所 述宏小区的移入级别高的小区。
另外， 本发明实施例还提供了一种识别小区类型的方法， 所述方法具体 包括：
获取小区物理标识或小区的类型标识；
通过所述小区物理标识或小区的类型标识， 识别小区类型。
另一方面， 本发明实施例还提供了一种终端， 所述终端包括：
测量模块， 用于在当前所在的宏小区中根据测量条件对相邻小区进行测 量；
设置模块， 用于根据所述测量模块测量出的相邻小区的信号质量信息， 设置所述测量出的相邻小区的小区重选参数；
选择模块， 用于根据所述设置模块设置的小区重选参数， 从所述测量模 块测量出的相邻小区中， 选择移入级别比所述终端所在宏小区的移入级别高 的小区。
另一方面， 本发明实施例还提供了一种终端， 包括：
测量模块， 用于在终端当前所在的宏小区中， 根据测量条件对相邻小区 进行测量；
第二确定模块， 用于当所述测量模块测量出的相邻小区中有小区为封闭 家用小区， 且所述终端为封闭家用终端时， 根据测量出的相邻小区的信号质 量信息， 在测量出的封闭家用小区中确定满足预设条件的封闭家用小区； 重选模块， 用于判断所述第二确定模块确定出的封闭家用小区中是否存 在终端签约的封闭家用小区， 如果是， 则根据签约封闭家用小区的信号质量 门限， 确定是否移入签约封闭家用小区。
本发明实施例提供的技术方案的有益效果是：
本发明实施例可以实现终端移入到移入级别高的小区， 终端移入后受到 的干扰减少， 与现有技术相比， 降低了终端与 HNB小区之间的相互干扰。 附图说明
图 1是本发明实施例一提供的小区重选的方法简化流程图；
图 2是本发明实施例二提供的小区重选的方法简化流程图；
图 3是本发明实施例三提供的小区重选的方法简化流程图；
图 4是本发明实施例四提供的识别小区类型的方法简化流程图； 图 5是本发明实施例五提供的终端简化结构示意图；
图 6是本发明实施例六提供的终端简化结构示意图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚， 下面将结合附图对本发 明实施方式作进一步地详细描述。
本发明实施例中的小区有多种类型， 包括： 宏小区、 开放家用小区、 封 闭家用小区 （CSG小区）和半开放家用小区 （Semi-Open Acces s Ce l l )等。 其中， 开放家用小区允许所有终端接入， 包括 CSG终端 （即该半开放家用小 区在该终端的白名单中）和非 CSG终端 （即该半开放家用小区不在该终端的 白名单中， 或该终端没有白名单， 或该终端不支持家用小区） ， 即开放家用 小区对终端的类型没有限制， 任何类型的终端都可以接入开放家用小区。 封 闭家用小区允许 CSG终端接入， 而非 CSG终端则不能接入。 半开放家用小区 允许 CSG终端和 pa s serby终端（过客终端， 又称路人终端）接入， 即对于半 开放家用小区来说， CSG终端和 pa s serby终端都是合法的用户， CSG终端比 pa s serby终端优先接入半开放家用小区， CSG终端在半开放家用小区中可以 享受业务， 并且相对于 pa s serby终端而言， CSG终端享受业务的优先级高， 而 pa s serby终端在半开放家用小区内的行为则受到限制， 包括但不限于： 1 ) pa s serby 终端被允许驻留在半开放家用小区内但是不能享受业务； 2 ) pa s serby终端被允许驻留在半开放家用小区内并且可以享受受限的业务， 该 受限的业务包括但不限于： 服务质量受限的业务、 服务类型受限的业务和服 务类型数量受限的业务。 3 ) 当半开放家用小区资源受限时， 优先接入 CSG终 端， 即， 如果该半开放家用小区在某终端的白名单中， 一般这个终端的优先 级比其他终端优先级高， 基于终端的信息按不同权重进行计算得到结果， 按 照该结果对 HNB下的终端进行排序， 所述终端的信息包括终端在小区中的优 先级， 业务优先级、 业务种类和业务速率中至少之一； 优选地， 按照上述计 算结果从高到低的顺序进行排序， 排序在前的终端的业务性能较高， 排序在 后的终端的业务性能较低， 因此可以将排序最低的 UE切换到其他小区， 或降 低排序最低的 UE业务速率；或删除排序最低的 UE并发业务中至少一种业务。 其中， 优选地， 可以将终端在小区中的优先级的权重设置得最高。 如果是不 同系统之间的切换， 在选择切换 UE之前， 应该考虑目标系统是否支持该即将 切入的 UE的业务。
例如： 半开放家用小区可以提供 200MB的带宽， 但是给 pa s serby终端仅 提供 100MB的带宽； 半开放家用小区可以提供打电话、 上网等业务， 但是只 给 pa s serby终端提供上网业务； 半开放家用小区可以提供 10种业务， 但是 给 pa s serby终端仅提供 6种业务等等。本发明实施例中的半开放家用小区与 封闭家用小区均具有一个 CSG标识， 如 CSG ID。
实施例一
参见图 1 , 图 1是本发明实施例一提供的小区重选的方法简化流程图， 如图 1所示， 该方法包括：
步骤 101 : 终端在当前所在的宏小区中根据测量条件对相邻小区进行测 量；
其中， 测量条件可以是在本地预设的， 也可以是从别处获取的， 本发明 实施例不做具体限定。
步骤 102 : 根据测量出的相邻小区的信号质量信息， 设置测量出的相邻 小区的小区重选参数；
具体地， 可根据测量出的相邻小区的信号质量信息， 按照预设的原则设 置测量出的相邻小区的小区重选参数。
步骤 103 : 根据设置的小区重选参数从测量出的相邻小区中， 选择移入 级别比当前所在的宏小区的移入级别高的小区。
本实施例中， 终端根据测量的小区信号质量信息设置小区重选参数， 并 根据设置的小区重选参数选择移入级别高的小区， 终端移入后受到的干扰减 少， 与现有技术相比， 降低了终端与 HNB小区之间的相互干扰。
实施例二 参见图 2 , 图 2是本发明实施例二提供的小区重选的方法简化流程图， 本实施例中的终端当前所在小区为宏小区， 相邻小区中没有本终端的 CSG小 区， 如图 2所示， 该方法具体包括：
步骤 201 : 终端在当前所在的宏小区内接收该宏小区的广播消息， 该广 播消息中通常会携带多种参数， 包括但不限于： 该宏小区的 I D、 该宏小区所 属频段的优先级、 该宏小区的测量门限， 相邻小区信息和小区重选的参数等 等， 其中， 测量门限包括测量同频小区时釆用的同频门限、 测量异频小区时 釆用的异频门限和测量异系统小区时釆用的异系统门限， 该同频小区是指与 当前宏小区频率相同的小区，该异频小区是指与当前宏小区频率不同的小区， 异系统是指不同的无线网络系统。
步骤 202 : 终端在当前所在的宏小区内， 根据获取的同频测量条件对同 频相邻小区进行测量， 得到同频相邻小区的信号质量信息。
本实施例中的相邻小区包括： 宏小区和家庭基站小区中的至少一种， 该 家庭基站小区包括： 开放家用小区、 半开放家用小区和封闭家用小区中的至 少一种。
其中， 终端可以在当前宏小区的信号质量变差时， 发起对相邻小区的测 量， 如终端检测到当前宏小区的信号质量达到预设的同频测量门限值时， 则 发起对相邻小区的测量。 本实施例不排除终端在满足其它条件时发起对相邻 小区的测量。
步骤 203 : 终端对测量出的同频相邻小区进行类型识别。
本发明实施例中， 终端对测量出的同频相邻小区进行类型识别的过程可 以具体如下：
终端通过小区的物理标识或者小区类型标识来识别测量出的同频相邻小 区的类型。 其中， 小区的物理标识， 终端可以在导频过程中获取到。 通常， 网络侧会为不同类型的小区预留不同区段的物理标识， 通过该物理标识的预 留区段可以识别出小区的类型。 具体地， 网络侧可以将物理标识分段， 每段 对应不同类型的小区， 每段内可以包含多个物理标识， 例如， ID1至 ID10为 开放家用小区， ID11至 ID20为半开放家用小区， ID21至 ID30为 CSG小区， 当终端在导频过程中获取到的小区物理标识为 ID12时，则可以判定该小区为 半开放家用小区等等。 上述小区类型标识， 可以携带在广播信道的消息中， 也可以通过 Iur/X2 接 口 传输。 Iur 接 口 是 UTRA ( Univer sa l Telecommunica t ion Radio Acces s , 通用陆地无线接入) 系统中 , RNC ( Radio Network Control ler , 无线网络控制器）用于同其他 RNC进行信令和数据交 互的接口； 在 Eutra ( Evo lved UTRA, 演进的通用陆地无线接入） 系统中， eNB (基站）通过 "X2接口" 和网络中相邻的 eNB相连， 与 Iur口类似。
步骤 204 : 当根据识别的同频相邻小区类型得知， 测量出的同频相邻小 区内满足预设的小区重选条件的小区均为同频半开放家用小区时， 终端根据 获取的异频测量条件对相邻的异频 /异系统小区进行测量， 得到异频 /异系统 小区的信号质量信息。
其中， 预设的小区重选条件是指现有的 R准则， 即选择信号质量信息排 序在前的相邻小区， 该排序在前的相邻小区的信号质量比其它相邻小区的信 号质量强。 本实施例中， 满足预设的小区重选条件的小区内没有一个小区是 同频宏小区， 所有满足小区重选条件的小区均为同频半开放家用小区。
上述异频测量条件有多种， 包括但不限于： 测量不低于预设的异频 /异系 统门限的相邻小区等等。 终端可以从接收到的广播消息中获取到该异频测量 条件。 例如， 终端根据当前宏小区的广播消息获取到异频门限为 10dB, 则终 端测量相邻的且信号质量不低于 10dB的异频小区。
步骤 205 : 终端根据测量出的相邻异频 /异系统小区的信号质量信息， 为 测量出的相邻异频 /异系统小区设置小区重选参数， 本实施例中， 小区重选参 数包括但不限于： 小区所属频段的优先级、 小区所属频段的门限、 小区的偏 移量 ( Qoff set ) /迟滞 ( Qhys t )等等。
其中， 设置小区重选参数的过程具体如下： 才艮据测量出的相邻小区的信号质量信息， 在测量出的相邻小区中确定满 足预设的小区重选条件的小区， 并识别满足该小区重选条件的小区类型， 识 别小区类型的过程同 203中的描述， 此处不再赘述；
如果满足该小区重选条件的小区为异频 /异系统宏小区， 则将该异频 /异 系统的宏小区重选参数设置为移入级别高于终端当前所在频段 /系统的移入 级别， 这种情况下， 测量出的相邻小区中可能存在异频 /异系统半开放家用小 区， 也可能不存在异频 /异系统半开放家用小区， 即使存在异频 /异系统半开 放家用小区， 由于上述异频 /异系统宏小区满足小区重选条件， 即信号质量排 序在前， 而该异频 /异系统半开放家用小区排序在后， 因此优先考虑满足小区 重选条件的异频 /异系统宏小区， 即设置该异频 /异系统的宏小区的移入级别 高于终端当前所在频段 /系统的移入级别；
如果满足该小区重选条件的小区为异频 /异系统半开放家用小区，则将该 异频 /异系统的半开放家用小区重选参数设置为移入级别不高于终端当前所 在频段 /系统的移入级别； 这种情况下， 测量出的小区中存在异频 /异系统宏 小区， 但是该异频 /异系统宏小区未满足小区重选条件， 即信号质量较弱， 相 对而言，终端在信号质量较弱的异频 /异系统宏小区内受到的干扰比在信号质 量较强的异频 /异系统半开放家用小区内受到的干扰要小， 因此优先考虑当前 频段的半开放小区，所以将该异频 /异系统的宏小区的移入级别不高于终端当 前所在频段 /系统的移入级别。
本步骤中的小区重选条件与 204中描述的小区重选条件相同。
本实施例中的移入级别是指终端是否容易移入一个小区， 终端移入小区 时， 优先考虑移入级别高的小区来移入。 具体地， 设置一个小区的移入级别 高， 可以包括： 设置该小区所属频段的优先级高、 设置该小区所属频段的门 限低或者设置该小区比当前终端驻留小区的偏移量 /迟滞低等等。 例如， 将小 区重选参数设置为异频 /异系统的移入级别高于终端当前所在频段 /系统的移 入级别， 具体包括： 设置异频 /异系统的优先级高于终端当前所在频段 /系统 的优先级； 或者设置异频 /异系统信号质量的门限低于终端当前所在频段 /系 统信号质量的门限； 或者设置异频 /异系统的小区偏移量 /迟滞低于终端当前 所在频段八系统的小区偏移量 /迟滞。将小区重选参数设置为该异频 /异系统的 移入级别不高于终端当前所在频段八系统的移入级别， 具体包括： 设置异频 / 异系统的优先级不高于终端当前所在频段八系统的优先级； 或者设置异频 /异 系统小区信号质量门限不低于终端当前所在频段 /系统信号质量的门限；或者 设置异频 /异系统的小区偏移量 /迟滞不低于终端当前所在频段 /系统的小区 偏移量 /迟滞。
在本发明实施例中， 上述由终端在本地设置小区重选参数的方式还可以 由以下方式来替换：
终端接收由网络侧下发的小区重选参数， 或者终端接收由网络侧下发的 携带小区重选参数的广播消息， 或者终端接收由专用信令下发的小区重选参 数， 其中， 终端接收到的小区重选参数包括： 小区所属频段的优先级、 小区 所属频段的门限和小区的偏移量 /迟滞中的至少一种。 当由系统下发广播消息 时， 进一步地， 系统还可以下发多套可供选择的小区重选参数， 每一套小区 重选参数都包括； 小区所属频段的优先级、 小区所属频段的门限和小区的偏 移量 /迟滞中的至少一种。 UE根据具体情况在该多套小区重选参数中选择相 应的一套小区重选参数， 例如， 当 UE需要将相应小区设置较高移入级别时， 则选择移入级别较高的那套小区重选参数， 反之亦然。 另外， 上述专用信令 还可以下发针对 UE当前情况的小区重选参数直接供 UE使用。
在本实施例中， 当终端接收网络侧下发的小区重选参数时， 终端可以根 据收到的小区重选参数从测量出的相邻小区中， 选择移入级别比所述宏小区 的接入级别高的小区。
步骤 206 : 终端根据设置的小区重选参数， 在测量出的相邻小区中选择 移入级别比终端当前所在的宏小区移入级别高的小区。
具体地， 在上述测量出的相邻小区中， 选择优先级最高的频段， 在该频 段内选择信号质量值最高的小区；
或者选择门限最低的频段， 在该频段内选择信号质量值最高的小区； 或者选择偏移量 /迟滞最低的小区。
步骤 207 : 终端根据所选小区的门限， 确定是否移入到所选的小区。 具体地， 终端可以判断测量到的所选小区信号质量信息是否不低于该所 选小区的门限， 如果是， 则移入到该所选小区， 否则， 不移入该所选小区， 即终端继续驻留在当前的宏小区内。
当终端移入所选的小区后， 会接收该小区的广播消息， 该广播消息中携 带有各种参数， 包括小区重选参数， 终端根据该广播消息中的参数可以更新 本地保存的相关信息。 为了防止终端更新本地的小区重选参数后， 终端根据 该更新后的信息又发起移入到其它小区的过程， 而导致发生乒乓现象（终端 频繁地在不同的小区之间切换） ， 进一步地， 本实施例中， 终端还可以预设 一个延时时间， 终端移入所选的小区后， 在该预设的延时时间到达后， 再根 据接收的该小区广播消息更新本地保存的小区重选参数信息， 具体地， 可以 通过定时器设定延时时间， 在定时器超时后， 更新本地保存的信息。
下面举例说明实施例 2的实施过程：
假设终端驻留在宏小区 1上， 宏小区 1属于频段 f l , f l上终端相邻的小 区有： 半开放家用小区 11 , 12和 13; 宏小区 2和 3; 频段 f2上终端相邻的 小区有： 半开放家用小区 21 , 22和 23 , 宏小区 4和 5。
当终端当前所在的宏小区 1所属频段 f l的信号质量变差时，终端启动对 相邻小区的测量， 当测量了同频的相邻小区， 即 Π上终端的相邻小区， 发现 满足预设的小区重选条件的同频小区都是半开放家用小区时， 继续对相邻的 异频 /异系统小区进行测量， 即测量频段 f 2上小区的信号质量。
如果 f2上的宏小区 4或 5是满足上述小区重选条件的小区，则可以将频 段 f 2的优先级设置为比当前频段 f 1的优先级高，或者是将频段 f 2的门限设 置的比当前频段 f l的门限低，或者是将宏小区 4或 5的 Qoff set/Qhys t设置 的比宏小区 1低， 使得终端可以更容易切换到 f 2上的宏小区 4或 5。
如果 f2上的宏小区 4或 5不满足上述小区重选条件，或是半开放家用小 区 21、 22和 23满足上述小区重选条件， 此时把 f2的优先级设置的比 f l 的 优先级低或者相同， 或者是将频段 f 2的门限设置的比当前频段 f 1的门限高 或相同， 或者是将半开放家用小区 21、 22和 23的 Qoff set/Qhys t设置的比 宏小区 1高， 使得终端可以较难切换到 f 2上的宏小区 4或 5。
本实施例中， 网络侧的家庭基站小区可以通过 Iu/Sl信令， Iu/Sl是无 线接入网和核心网的接口， 来获取终端的签约属性信息来区分终端的类型， 也可以根据预存的终端类型信息来区分终端的类型。 通常， 家庭基站小区预 存的终端类型信息包括主人和客人两种， 对于未出现在该预存的终端类型信 息中的终端， 家庭基站小区将其识别为过客终端。
本实施例在测量到满足小区重选条件的异频 /异系统宏小区时，非 CSG终 端可以根据设置的小区重选参数移入到该异频 /异系统宏小区，从而可以减少 HNB小区对宏小区中的非 CSG终端的下行干扰；也可以减少宏小区中的非 CSG 终端对 HNB终端的下行或上行干扰， 给运营商部署网络提供了方便。
实施例三
参见图 3 , 图 3是本发明实施例三提供的小区重选的方法简化流程图。 本实施例中， 终端为 CSG终端， 且当前所在小区为宏小区， 如图 3所示， 该 方法具体包括：
步骤 301 : 终端在当前所在的宏小区内接收该宏小区的广播消息， 并根 据预设的测量条件对相邻小区进行测量， 得到相邻小区的信号质量信息。
其中， 终端测量相邻小区的过程与实施例 2 中的描述相同， 此处不再赘 述。
步骤 302: 当测量到的相邻小区中有小区为 CSG小区时， 根据测量出的 相邻小区的信号质量信息， 在测量出的 CSG小区中确定满足预设条件的 CSG 小区。 其中， 预设条件为： 小区的信号质量信息不低于预设的信号质量门限， 该值用来作为筛选 CSG小区的依据， 通常为网络侧设置。 如果测量到的 CSG 小区信号质量信息不低于该预设的信号质量门限， 表明测量到的 CSG小区信 号质量较强， 则可以选择该测量到的 CSG小区； 如果测量到的 CSG小区信号 质量信息低于该预设的信号质量门限，表明测量到的 CSG小区信号质量较差， 则不选择该测量到的 CGS小区。 根据该预设的信号质量门限， 终端可以选出 一个或多个 CGS小区。 终端获取该预设的信号质量门限， 可以有多种方式， 包括但不限于以下几种方式中的任一种： 从终端当前所在小区的广播消息中 读取， 从网络侧发送的专用信令， 如 RRC译放消息， 中读取和从终端自身的 SIM (客户身份识别）卡保存的信息中读取。
步骤 303: 判断确定出的 CSG小区中是否存在终端签约的 CSG小区， 在 本实施例中具体为， 获取确定出的 CSG小区的标识， 判断获取的标识是否与 终端自身存储的签约 CSG小区的标识相同， 如果是， 则执行 304; 否则， 执 行 306。
本实施例中， CSG小区的标识具体为 CSG ID。 具体地， 终端可以从确定 出的 CSG小区的广播消息中读取该小区的 CSG ID。
在 CSG终端中通常都保存有与之签约的 CSG小区的 CSG ID (如白名单）， 终端将读取的 CSG ID与自身保存的 CSG ID进行比较， 如果一致， 则表示该 终端是该 CSG小区的签约终端； 否则， 该终端不是该 CSG小区的签约终端。
步骤 304: 终端判断该签约 CSG 小区的信号质量信息是否不低于该 CGS 小区的信号质量门限， 如果是， 则执行 305; 否则， 执行 306。
每个 CSG小区都有自己的信号质量门限， 当终端测量到的该 CSG小区信 号质量信息不低于该 CSG小区的信号质量门限时， 表明该 CSG小区的信号质 量较强， 则终端可以移动到该 CSG小区， 从而减轻在当前宏小区所受干扰较 强的状况； 如果终端测量到的该 CSG小区信号质量信息低于该 CSG小区的信 号质量门限， 表明该 CSG小区的信号质量较差， 则终端不移动到该 CSG小区。 终端获取 CSG小区的信号质量门限有多种方式， 包括但不限于以下几种方式 中的任一种： 终端从该 CSG小区的广播消息中读取， 终端从当前驻留小区的 广播消息中读取， 终端从保存的路径记录信息中读取。 其中， 所述路径记录 信息是指终端记录的以前访问过的小区的相关信息， 如小区 ID、 信号质量门 限、 小区重选参数等等， 当终端以前访问过某个 CSG小区时， 该路径记录信 息中会保存有该 CSG小区的信息， 终端则可以从该路径记录信息中读取到该 CSG小区的 ID。 如果终端以前没有访问过该 CSG小区， 则终端可以通过读取 当前小区的广播消息或该签约 CSG小区的广播消息来获取该签约 CSG小区的 信号质量门限。
步骤 305 : 终端移入该签约 CSG小区。
步骤 306 : 终端继续驻留在当前的宏小区。
进一步地， 当终端确定并移入到签约 CSG小区后， 接收该签约封闭家用 小区的广播消息， 还可以在预设的延时时间后， 根据该广播消息更新本地保 存的小区重选参数， 从而避免发生乒乓现象。
本实施例中 CSG终端先测量出满足预设的信号质量门限的 CSG小区， 然 后在其中找到该 CSG终端签约的 CSG小区， 再判断其签约 CSG小区的信号质 量是否不低于该小区的信号质量门限， 如果是， 则将终端移入签约 CSG小区 内， 从而使终端可以在签约 CSG小区内享受业务， 与终端继续驻留在宏小区 相比， 降低了终端受到的干扰。
实施例四
参见图 4 , 图 4是本发明实施例四提供的识别小区类型的方法简化流程 图， 如图 4所示， 该方法包括：
步骤 401、 获取小区物理标识或小区的类型标识；
步骤 402、 通过该小区物理标识或小区的类型标识， 识别小区类型。 实施例五
参见图 5 , 图 5是本发明实施例五提供的终端简化结构示意图， 如图 5 所示， 该终端包括：
测量模块 501 , 用于在当前所在的宏小区中根据测量条件对相邻小区进 行测量；
设置模块 502 , 用于根据测量模块 501 测量出的相邻小区的信号质量信 息， 设置测量出的相邻小区的小区重选参数；
选择模块 503 , 用于根据设置模块 502设置的小区重选参数， 从测量模 块 501测量出的相邻小区中， 选择移入级别比终端所在宏小区的移入级别高 的小区。
其中， 测量条件可以是在本地预设的， 也可以是从别处获取的， 本发明 实施例不做具体限定。
上述测量模块 501具体包括：
同频测量单元， 用于根据获取的同频测量条件， 测量与宏小区同频的相 邻小区；
第一识别单元， 用于识别同频测量单元测量出的同频相邻小区的类型； 异频测量单元， 用于当根据第一识别单元得知， 同频测量单元测量出的 同频相邻小区内， 满足小区重选条件的小区均为半开放家用小区时， 根据获 取的异频测量条件， 测量宏小区的异频相邻小区。
其中， 小区重选条件可以是在本地预设的， 也可以是从别处获取的， 本 发明实施例不做具体限定。
上述设置模块 502可以具体包括：
第二识别单元， 用于根据测量模块 501测量出的相邻小区的信号质量信 息， 在测量出的相邻小区中确定满足小区重选条件的小区， 并识别满足小区 重选条件的小区类型；
第一设置单元， 用于当第二识别单元识别出满足小区重选条件的小区为 异频 /异系统宏小区时， 将所述小区重选参数设置为异频 /异系统的移入级别 高于所述终端当前所在频段 /系统的移入级别； 第二设置单元， 用于当第二识别单元识别出满足小区重选条件的小区为 异频 /异系统半开放家用小区时， 将所述小区重选参数设置为异频 /异系统的 移入级别不高于所述终端当前所在频段 /系统的移入级别。
进一步地， 上述第一设置单元可以具体包括以下任意子单元或任意子单 元的组合：
第一优先级设置子单元，用于设置所述异频 /异系统的优先级高于所述终 端当前所在频段 /系统的优先级；
第一门限设置子单元，用于设置所述异频 /异系统信号质量的门限低于所 述终端所在频段 /系统信号质量的门限；
第一偏移量 /迟滞设置子单元，用于设置所述异频 /异系统的小区偏移量 / 迟滞低于所述终端所在频段 /系统的小区偏移量 /迟滞。
上述第二设置单元可以具体包括以下任意子单元或任意子单元的组合： 第二优先级设置子单元，用于设置所述异频 /异系统的优先级不高于所述 终端当前所在频段 /系统的优先级；
第二门限设置子单元，用于设置所述异频 /异系统信号质量的门限不低于 所述终端所在频段 /系统信号质量的门限；
第二偏移量 /迟滞设置子单元，用于设置所述异频 /异系统的小区偏移量 / 迟滞不低于所述终端所在频段 /系统的小区偏移量 /迟滞。
上述选择模块 503可以具体包括以下任意单元或任意单元的组合： 优先级选择单元， 用于根据设置模块 502设置的小区重选参数， 在测量 模块 501测量出的相邻小区中， 选择优先级最高的频段， 在该频段内选择信 号质量值最高的小区；
门限选择单元， 用于根据设置模块 502设置的小区重选参数， 在测量模 块 501测量出的小区中， 选择门限最低的频段， 在该频段内选择信号质量值 最高的小区；
偏移量 /迟滞选择单元， 用于根据设置模块 502设置的小区重选参数， 在 测量模块 501测量出的小区中， 选择偏移量 /迟滞最低的小区。
进一步地， 上述终端还可以包括：
第一确定模块， 用于确定是否移入选择模块 503选择的小区；
更新模块， 用于当确定模块确定移入并且终端移入到选择的小区后， 接 收选择的小区的广播消息， 在预设的延时时间后， 根据广播消息更新本地保 存的小区重选参数。
本实施例在测量到满足小区重选条件的异频 /异系统宏小区时，非 CSG终 端可以根据设置的小区重选参数移入到该异频 /异系统宏小区，从而可以减少 HNB小区对宏小区中的非 CSG终端的下行干扰；也可以减少宏小区中的非 CSG 终端对 HNB 终端的下行或上行干扰， 给运营商部署网络提供了方便。
实施例六
参见图 6 , 图 6是本发明实施例六提供的终端简化结构示意图， 与上述 实施例三的小区重选的方法相对应， 如图 6所示， 该终端包括：
测量模块 601 , 用于在终端当前所在的宏小区中， 根据测量条件对相邻 小区进行测量；
第二确定模块 602 , 用于当测量模块 601 测量出的相邻小区中有小区为 封闭家用小区， 且上述终端为封闭家用终端时， 根据测量出的相邻小区的信 号质量信息，在测量出的封闭家用小区中确定满足预设条件的封闭家用小区； 重选模块 603 , 用于判断第二确定模块 602确定出的封闭家用小区中是 否存在终端签约的封闭家用小区， 如果是， 则根据签约封闭家用小区的信号 质量门限， 确定是否移入签约封闭家用小区。
其中， 测量条件可以是在本地预设的， 也可以是从别处获取的， 本发明 实施例不做具体限定。
进一步地， 上述重选模块 603具体包括：
判断单元， 用于获取确定出的封闭家用小区的标识， 判断获取的标识是 否与终端存储的签约封闭家用小区的标识相同； 重选单元， 用于当判断单元判断的结果为是时， 根据签约封闭家用小区 的信号质量门限， 确定是否移入签约封闭家用小区。
进一步地， 上述终端还可以包括：
更新模块， 用于当终端确定并移入到签约封闭家用小区后， 接收签约封 闭家用小区的广播消息， 在预设的延时时间后， 根据广播消息更新本地保存 的小区重选参数。
本实施例中 CSG终端在进行小区重选时， 首先通过测量模块根据测量条 件对相邻的小区进行测量， 然后在找到该 CSG终端的签约小区后， 再判断其 签约小区的信号质量是否不低于该小区的信号质量门限， 如果是， 则将终端 移入签约 CSG小区内， 从而使终端可以在签约 CSG小区内享受业务， 与终端 继续驻留在宏小区相比， 降低了终端受到的干扰。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流 程， 是可以通过计算机程序来指令相关的硬件来完成， 所述的程序可存储于 一个或多个计算机可读取存储介质中， 该程序在执行时， 可包括如上述各方 法的实施例的流程。 其中， 所述的存储介质可为磁碟、 光盘、 只读存储记忆 体 ( Read-On ly Memory , ROM )或随机存储记忆体 ( Random Acces s Memory , RAM )等。
最后应说明的是： 以上实施例仅用以说明本发明的技术方案而非对其进 行限制， 尽管参照较佳实施例对本发明进行了详细的说明， 本领域的普通技 术人员应当理解： 其依然可以对本发明的技术方案进行修改或者等同替换， 而这些修改或者等同替换亦不能使修改后的技术方案脱离本发明技术方案的 4青神和范围。

Claims

权 利 要 求 书
1、 一种小区重选的方法， 其特征在于， 所述方法包括：
终端在当前所在的宏小区中根据测量条件对相邻小区进行测量； 根据测量出的相邻小区的信号质量信息， 设置所述测量出的相邻小区的 小区重选参数； 或者， 接收网络侧通过广播消息下发的小区重选参数； 或者， 接收网络侧通过专用信令下发的小区重选参数；
根据所述小区重选参数从所述测量出的相邻小区中， 选择移入级别比所 述宏小区的移入级别高的小区。
2、 根据权利要求 1所述的小区重选的方法， 其特征在于， 所述相邻小区 包括： 宏小区和家庭基站小区中的至少一种， 所述家庭基站小区包括： 开放 家用小区、 半开放家用小区和封闭家用小区中的至少一种；
所述开放家用小区允许所有终端接入；
所述半开放家用小区允许封闭家用终端和过客终端接入， 所述封闭家用 终端在所述半开放家用小区内享受业务的优先级高于所述过客终端， 所述封 闭家用终端比所述过客终端优先接入所述半开放家用小区。
3、 根据权利要求 2所述的小区重选的方法， 其特征在于， 所述过客终端 不能在所述半开放家用小区内享受业务或者享受受限的业务。
4、 根据权利要求 2所述的小区重选的方法， 其特征在于， 当所述半开放 家用小区资源受限时， 优先接入封闭家用终端， 并基于终端的信息按不同的 权重进行计算， 按照计算的结果从高到低的顺序对终端进行排序， 选出排序 最低的终端， 将所述排序最低的终端切换到其他小区， 或降低所述排序最低 的终端的业务速率，或删除所述排序最低的终端并发业务中的至少一种业务。
5、 根据权利要求 4所述的小区重选的方法， 其特征在于， 所述终端的信 息包括： 终端在小区中的优先级、 业务优先级、 业务种类和业务速率中的至 少一种， 其中终端在小区中的优先级所占的权重最高。
6、 根据权利要求 1所述的小区重选的方法， 其特征在于， 所述终端在当 前所在的宏小区中根据测量条件对相邻小区进行测量， 具体包括： 根据获取的同频测量条件， 测量与所述宏小区同频的相邻小区； 识别测量出的同频相邻小区的类型；
当所述测量出的同频相邻小区内满足小区重选条件的小区均为半开放家 用小区时， 根据获取的异频测量条件， 测量所述宏小区的异频相邻小区。
7、 根据权利要求 1所述的小区重选的方法， 其特征在于， 所述根据测量 出的相邻小区信号质量信息， 设置所述测量出的相邻小区的小区重选参数， 具体包括：
才艮据测量出的相邻小区的信号质量信息， 在测量出的相邻小区中确定满 足小区重选条件的小区， 并识别满足小区重选条件的小区类型；
如果满足所述小区重选条件的相邻小区为异频 /异系统宏小区，则将所述 小区重选参数设置为异频 /异系统的移入级别高于所述终端当前所在频段 /系 统的移入级别；
如果满足所述小区重选条件的相邻小区为异频 /异系统半开放家用小区， 则将所述小区重选参数设置为异频 /异系统的移入级别不高于所述终端当前 所在频段 /系统的移入级别。
8、 根据权利要求 7所述的小区重选的方法， 其特征在于， 所述将所述小 区重选参数设置为异频 /异系统的移入级别高于所述终端当前所在频段 /系统 的移入级别， 具体包括：
设置所述异频 /异系统的优先级高于所述终端当前所在频段 /系统的优先 级；
或者设置所述异频 /异系统信号质量的门限低于所述终端所在频段 /系统 信号质量的门限；
或者设置所述异频 /异系统的小区偏移量 /迟滞低于所述终端所在频段 / 系统的小区偏移量 /迟滞。
9、 根据权利要求 7所述的小区重选的方法， 其特征在于， 所述将所述小 区重选参数设置为异频 /异系统的移入级别不高于所述终端当前所在频段 /系 统的移入级别， 具体包括：
设置所述异频 /异系统的优先级不高于所述终端当前所在频段 /系统的优 先级；
或者设置所述异频 /异系统信号质量的门限不低于所述终端所在频段八系 统信号质量的门限；
或者设置所述异频 /异系统的小区偏移量 /迟滞不低于所述终端所在频段 八系统的小区偏移量 /迟滞。
10、 根据权利要求 1所述的小区重选的方法， 其特征在于， 所述方法进 一步包括：
当确定并移入到选择的小区后， 接收所述选择的小区的广播消息； 在预设的延时时间后，根据所述广播消息更新本地保存的小区重选参数。
11、 一种识别小区类型的方法， 其特征在于， 所述方法具体包括： 获取小区物理标识或小区的类型标识；
通过所述小区物理标识或小区的类型标识， 识别小区类型。
12、 根据权利要求 11所述的识别小区类型的方法， 其特征在于， 所述通 过所述小区物理标识识别小区类型具体为：
根据小区物理标识预留区段和获取的小区物理标识， 识别小区类型。
13、 根据权利要求 11所述的识别小区类型的方法， 其特征在于， 所述获 取小区的类型标识具体为：
从广播信道消息中获取， 或者通过 Iur/X2接口获取。
14、 根据权利要求 11所述的识别小区类型的方法， 其特征在于， 所述方 法还包括：
当识别出的小区类型为半开放家用小区时， 读取来自广播信道的消息中 携带的封闭签约用户组的标识， 将读取到的封闭签约用户组的标识与自身保 存的签约的封闭签约用户组的标识进行比较， 如果一致， 则确认自身是所述 识别出的小区的签约终端； 否则， 确认自身不是所述识别出的小区的签约终 端。
15、 一种终端， 其特征在于， 所述终端包括：
测量模块， 用于在当前所在的宏小区中根据测量条件对相邻小区进行测 量；
设置模块， 用于根据所述测量模块测量出的相邻小区的信号质量信息， 设置所述测量出的相邻小区的小区重选参数；
选择模块， 用于根据所述设置模块设置的小区重选参数， 从所述测量模 块测量出的相邻小区中选择移入级别比所述终端所在宏小区的移入级别高的 小区。
16、根据权利要求 15所述的终端，其特征在于，所述测量模块具体包括： 同频测量单元， 用于根据获取的同频测量条件， 测量与所述宏小区同频 的相邻小区；
第一识别单元， 用于识别所述同频测量单元测量出的同频相邻小区的类 型；
异频测量单元， 用于当根据所述第一识别单元得知， 所述同频测量单元 测量出的同频相邻小区内，满足小区重选条件的小区均为半开放家用小区时， 根据获取的异频测量条件， 测量所述宏小区的异频相邻小区。
17、根据权利要求 15所述的终端，其特征在于，所述设置模块具体包括： 第二识别单元，用于根据所述测量模块测量出的相邻小区信号质量信息， 在测量出的相邻小区中确定满足小区重选条件的小区， 并识别满足所述小区 重选条件的小区类型；
第一设置单元， 用于当所述第二识别单元识别出满足所述小区重选条件 的小区为异频 /异系统宏小区时， 将所述小区重选参数设置为异频 /异系统的 移入级别高于所述终端当前所在频段 /系统的移入级别；
第二设置单元， 用于当所述第二识别单元识别出满足所述小区重选条件 的小区为异频 /异系统半开放家用小区时， 将所述小区重选参数设置为异频 / 异系统的移入级别高于所述终端当前所在频段 /系统的移入级别。
18、 根据权利要求 17所述的终端， 其特征在于， 所述第一设置单元具体 包括如下任意子单元或任意子单元的组合：
第一优先级设置子单元，用于设置所述异频 /异系统的优先级高于所述终 端当前所在频段 /系统的优先级；
第一门限设置子单元，用于设置所述异频 /异系统信号质量的门限低于所 述终端所在频段 /系统信号质量的门限；
第一偏移量 /迟滞设置子单元，用于设置所述异频 /异系统的小区偏移量 / 迟滞低于所述终端所在频段 /系统的小区偏移量 /迟滞。
19、 根据权利要求 17所述的终端， 其特征在于， 所述第二设置单元具体 包括如下任意子单元或任意子单元的组合：
第二优先级设置子单元，用于设置所述异频 /异系统的优先级不高于所述 终端当前所在频段 /系统的优先级；
第二门限设置子单元，用于设置所述异频 /异系统信号质量的门限不低于 所述终端所在频段 /系统信号质量的门限；
第二偏移量 /迟滞设置子单元，用于设置所述异频 /异系统的小区偏移量 / 迟滞不低于所述终端所在频段 /系统的小区偏移量 /迟滞。
20、 根据权利要求 15所述的终端， 其特征在于， 所述终端还包括： 第一确定模块， 用于确定是否移入所述选择模块选择的小区；
更新模块， 用于当所述确定模块确定移入并且所述终端移入到所述选择 的小区后， 接收所述选择的小区的广播消息， 在预设的延时时间后， 根据所 述广播消息更新本地保存的小区重选参数。
21、 一种终端， 其特征在于， 包括：
测量模块， 用于在终端当前所在的宏小区中， 根据测量条件对相邻小区 进行测量； 第二确定模块， 用于当所述测量模块测量出的相邻小区中有小区为封闭 家用小区， 且所述终端为封闭家用终端时， 根据测量出的相邻小区的信号质 量信息， 在测量出的封闭家用小区中确定满足预设条件的封闭家用小区； 重选模块， 用于判断所述第二确定模块确定出的封闭家用小区中是否存 在终端签约的封闭家用小区， 如果是， 则根据签约封闭家用小区的信号质量 门限， 确定是否移入签约封闭家用小区。
22、 根据权利要求 21所述的终端， 其特征在于， 所述重选模块包括： 判断单元， 用于获取确定出的封闭家用小区的标识， 判断获取的标识是 否与终端存储的签约封闭家用小区的标识相同；
重选单元， 用于当所述判断单元判断的结果为是时， 根据签约封闭家用 小区的信号质量门限， 确定是否移入签约封闭家用小区。
23、 根据权利要求 21或 22的终端， 其特征在于， 还包括：
更新模块， 用于当终端确定并移入到签约封闭家用小区后， 接收签约封 闭家用小区的广播消息， 在预设的延时时间后， 根据广播消息更新本地保存
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